:root {
  --navy: #061e48;
  --blue: #082b66;
  --cyan: #08c8ef;
  --ink: #122032;
  --muted: #5d6878;
  --line: #d9e4ed;
  --paper: #ffffff;
  --soft: #f5f8fb;
  --green: #0a7a55;
  --amber: #f2c14e;
  --shadow: 0 20px 48px rgba(6, 30, 72, 0.12);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: Segoe UI, Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.5;
}

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

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  min-height: 74px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 22px;
  padding: 12px clamp(18px, 4vw, 56px);
  border-bottom: 1px solid rgba(8, 43, 102, 0.12);
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(14px);
}

.brand img {
  width: clamp(220px, 28vw, 340px);
}

nav {
  display: flex;
  gap: 22px;
  color: var(--muted);
  font-weight: 700;
}

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

.top-cta,
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 18px;
  border: 1px solid transparent;
  border-radius: 6px;
  font-weight: 800;
  cursor: pointer;
}

.top-cta,
.button.primary {
  background: var(--cyan);
  color: #03182e;
}

.button.ghost {
  color: #fff;
  border-color: rgba(255, 255, 255, 0.5);
}

.hero {
  position: relative;
  isolation: isolate;
  min-height: 76svh;
  display: grid;
  align-items: center;
  overflow: hidden;
  color: #fff;
  background: var(--navy);
}

.hero-bg,
.hero-shade {
  position: absolute;
  inset: 0;
  z-index: -2;
}

.hero-bg {
  background-image: url("assets/gnt-hero-brand.png");
  background-size: cover;
  background-position: center;
  opacity: 0.34;
}

.hero-shade {
  z-index: -1;
  background:
    linear-gradient(90deg, rgba(6, 30, 72, 0.96), rgba(6, 30, 72, 0.8) 48%, rgba(6, 30, 72, 0.58)),
    repeating-linear-gradient(90deg, rgba(255, 255, 255, 0.08) 0 1px, transparent 1px 72px);
}

.hero-inner,
.container {
  width: min(1140px, calc(100% - 36px));
  margin: 0 auto;
}

.hero-inner {
  padding: clamp(62px, 10vw, 116px) 0 clamp(42px, 7vw, 76px);
}

.kicker,
.section-kicker {
  margin: 0 0 14px;
  color: var(--cyan);
  font-size: 0.78rem;
  font-weight: 900;
  letter-spacing: 0;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin: 0;
}

h1 {
  width: min(860px, 100%);
  font-size: clamp(2.15rem, 5.4vw, 4.45rem);
  line-height: 1.02;
  letter-spacing: 0;
}

h2 {
  color: var(--blue);
  font-size: clamp(1.85rem, 3.4vw, 2.95rem);
  line-height: 1.08;
  letter-spacing: 0;
}

h3 {
  color: var(--blue);
  font-size: 1.25rem;
  line-height: 1.2;
}

.hero-copy {
  width: min(700px, 100%);
  margin-top: 24px;
  color: rgba(255, 255, 255, 0.82);
  font-size: clamp(1.02rem, 1.5vw, 1.18rem);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 32px;
}

.proof-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 46px;
}

.proof-row span {
  padding: 10px 12px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 6px;
  color: rgba(255, 255, 255, 0.82);
  background: rgba(255, 255, 255, 0.08);
  font-weight: 750;
}

.section {
  padding: clamp(64px, 9vw, 112px) 0;
}

.split,
.process-layout,
.roi-layout,
.contact-box {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.05fr);
  gap: clamp(30px, 6vw, 72px);
  align-items: start;
}

.copy {
  color: var(--muted);
  font-size: 1.08rem;
}

.copy p + p {
  margin-top: 16px;
}

.method-copy {
  margin-top: 18px;
  color: var(--muted);
  font-size: 1.08rem;
}

.problem,
.plans {
  background: var(--soft);
}

.problem .split {
  grid-template-columns: minmax(0, 0.9fr) minmax(320px, 0.72fr);
  gap: clamp(28px, 4vw, 48px);
  align-items: center;
}

.problem h2 {
  max-width: 760px;
  font-size: clamp(1.9rem, 3.2vw, 2.85rem);
}

.problem .copy {
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  box-shadow: 0 14px 32px rgba(6, 30, 72, 0.08);
}

.section-heading {
  width: min(780px, 100%);
  margin-bottom: 34px;
}

.section-heading p:not(.section-kicker) {
  margin-top: 14px;
  color: var(--muted);
  font-size: 1.05rem;
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
}

.product-grid article,
.niche-list article,
.plan-grid article,
.calculator,
.contact-box form {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--paper);
  box-shadow: var(--shadow);
}

.product-grid article {
  min-height: 250px;
  padding: 24px;
}

.product-grid span {
  display: block;
  margin-bottom: 38px;
  color: var(--green);
  font-weight: 950;
}

.product-grid p,
.niche-list p,
.plan-grid p,
.plan-grid span,
.roi-layout > div p,
.contact-box > div p {
  margin-top: 12px;
  color: var(--muted);
}

.niches {
  background: #102033;
}

.niches h2,
.niches h3 {
  color: #fff;
}

.niche-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.niche-list article {
  padding: 22px;
  border-color: rgba(255, 255, 255, 0.15);
  background: rgba(255, 255, 255, 0.06);
  box-shadow: none;
}

.niche-list p {
  color: rgba(255, 255, 255, 0.72);
}

.steps {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.steps div {
  display: grid;
  gap: 10px;
  min-height: 210px;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background:
    linear-gradient(180deg, rgba(8, 200, 239, 0.08), rgba(255, 255, 255, 0) 42%),
    #fff;
  box-shadow: 0 14px 32px rgba(6, 30, 72, 0.08);
}

.step-number {
  display: inline-grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border-radius: 8px;
  color: #03182e;
  background: var(--cyan);
  font-weight: 950;
}

.steps strong {
  color: var(--blue);
  font-size: 1.22rem;
  line-height: 1.15;
}

.steps p {
  color: var(--muted);
}

.plan-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

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

.plan-grid article.featured {
  border-color: var(--cyan);
}

.badge {
  display: inline-flex;
  margin-bottom: 16px;
  padding: 7px 10px;
  border-radius: 6px;
  color: #17340d;
  background: #ddf3c8;
  font-size: 0.82rem;
  font-weight: 900;
}

.plan-grid strong {
  display: block;
  margin-top: 24px;
  color: var(--blue);
  font-size: clamp(1.9rem, 4vw, 2.8rem);
  line-height: 1;
}

.plan-grid ul {
  display: grid;
  gap: 10px;
  margin: 24px 0 0;
  padding: 0;
  list-style: none;
}

.plan-grid li {
  position: relative;
  padding-left: 22px;
}

.plan-grid li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 8px;
  height: 8px;
  border-radius: 999px;
  background: var(--amber);
}

.roi {
  background: #fff;
}

.roi .roi-layout {
  grid-template-columns: 1fr;
  gap: 28px;
}

.roi .roi-layout > div:first-child {
  width: min(860px, 100%);
}

.roi-panel {
  display: grid;
  gap: 18px;
}

.calculator-guide {
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--soft);
}

.calculator-guide p,
.calculator-copy,
.calculator-footnote {
  margin-top: 10px;
  color: var(--muted);
}

.roi-calculators {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}

.roi-tool {
  display: grid;
  gap: 16px;
  padding: 26px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--paper);
  box-shadow: var(--shadow);
}

.calculator-head {
  display: grid;
  grid-template-columns: 82px 1fr;
  gap: 18px;
  align-items: start;
}

.calculator-label {
  width: fit-content;
  padding: 6px 10px;
  border-radius: 6px;
  color: var(--blue);
  background: #dff8ff;
  font-size: 0.82rem;
  font-weight: 900;
  text-transform: uppercase;
}

.solution-tool .calculator-label {
  color: #164537;
  background: #dff7ec;
}

.field-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  align-items: start;
}

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

.field-grid label span {
  min-height: 42px;
  display: flex;
  align-items: flex-end;
}

.calculator-separator {
  justify-self: center;
  padding: 7px 14px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--blue);
  background: #fff;
  font-size: 0.86rem;
  font-weight: 900;
}

.comparison-results,
.roi-reading {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.comparison-results .roi-result {
  margin-top: 0;
}

.comparison-results .roi-result:not(.net-result) {
  color: var(--blue);
  background: #eef8fb;
}

.roi-result.is-warning {
  color: #6e4a00;
  background: #fff2cd;
}

.roi-result.is-negative {
  color: #7d1f1f;
  background: #ffe7e3;
}

.roi-result small {
  color: currentColor;
  font-size: 0.82rem;
  opacity: 0.72;
}

.roi-reading {
  margin-top: 2px;
}

.roi-reading div {
  display: grid;
  gap: 10px;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  box-shadow: 0 12px 28px rgba(6, 30, 72, 0.08);
}

.roi-reading .reading-label {
  color: var(--green);
  font-size: 0.78rem;
  font-weight: 900;
  text-transform: uppercase;
}

.roi-reading strong {
  color: var(--blue);
  font-size: clamp(1.35rem, 2.6vw, 2rem);
  line-height: 1.08;
}

.roi-reading p {
  color: var(--muted);
}

.calculator,
.contact-box form {
  display: grid;
  gap: 15px;
  padding: 26px;
}

label {
  display: grid;
  gap: 7px;
  font-weight: 800;
}

input,
select,
textarea {
  width: 100%;
  min-height: 44px;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: 6px;
  color: var(--ink);
  background: #fff;
  font: inherit;
}

textarea {
  resize: vertical;
}

input:focus,
select:focus,
textarea:focus {
  outline: 3px solid rgba(8, 200, 239, 0.26);
  border-color: var(--cyan);
}

output {
  display: grid;
  gap: 4px;
  margin-top: 6px;
  padding: 18px;
  border-radius: 8px;
  color: #124334;
  background: #dff7ec;
}

output.is-negative {
  color: #7d1f1f;
  background: #ffe7e3;
}

output span {
  font-weight: 900;
}

output strong {
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  line-height: 1;
}

.contact {
  background: #eef8fb;
}

.contact-box {
  align-items: center;
}

.contact-box > div p {
  font-size: 1.08rem;
}

.contact-box .button {
  width: 100%;
  border: 0;
}

.whatsapp-button {
  gap: 10px;
}

.whatsapp-mark {
  display: inline-grid;
  place-items: center;
  width: 28px;
  height: 28px;
  border-radius: 999px;
  color: #fff;
  background: #25d366;
}

.whatsapp-mark svg {
  width: 20px;
  height: 20px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.55;
  stroke-linecap: round;
  stroke-linejoin: round;
}

footer {
  padding: 36px 0;
  color: rgba(255, 255, 255, 0.74);
  background: var(--navy);
}

.footer-inner {
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: 32px;
  align-items: center;
}

.footer-inner img {
  width: 260px;
  height: 76px;
  object-fit: contain;
  object-position: left center;
}

@media (max-width: 960px) {
  .site-header {
    flex-wrap: wrap;
  }

  nav {
    order: 3;
    width: 100%;
    justify-content: space-between;
    overflow-x: auto;
  }

  .split,
  .process-layout,
  .roi-layout,
  .contact-box,
  .footer-inner {
    grid-template-columns: 1fr;
  }

  .problem .split {
    grid-template-columns: 1fr;
  }

  .product-grid,
  .niche-list,
  .plan-grid,
  .steps {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 640px) {
  .site-header {
    position: static;
  }

  .top-cta {
    width: 100%;
  }

  .hero {
    min-height: auto;
  }

  .hero-actions,
  .hero-actions .button {
    width: 100%;
  }

  .product-grid,
  .niche-list,
  .plan-grid,
  .steps {
    grid-template-columns: 1fr;
  }

  .steps div {
    min-height: auto;
  }

  .field-grid,
  .field-grid.compact,
  .calculator-head,
  .comparison-results,
  .roi-reading {
    grid-template-columns: 1fr;
  }

  .field-grid label span {
    min-height: auto;
  }
}