:root {
  color-scheme: light;
  --ink: #252f38;
  --muted: #66717b;
  --line: #d8dee4;
  --paper: #ffffff;
  --soft: #f3f5f6;
  --blue: #155b82;
  --navy: #153243;
  --orange: #cf4520;
  --green: #0f8a5f;
  --shadow: 0 24px 60px rgba(21, 50, 67, 0.18);
  font-family: Arial, Helvetica, sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--soft);
  color: var(--ink);
}

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

.site-header {
  background: rgba(255, 255, 255, 0.96);
  border-bottom: 1px solid rgba(216, 222, 228, 0.85);
  position: sticky;
  top: 0;
  z-index: 30;
}

.header-inner {
  align-items: center;
  display: flex;
  gap: 24px;
  justify-content: space-between;
  margin: 0 auto;
  max-width: 1180px;
  padding: 14px 24px;
}

.brand img {
  display: block;
  height: 70px;
  width: auto;
}

nav {
  align-items: center;
  display: flex;
  flex-wrap: wrap;
  gap: 22px;
  justify-content: center;
  text-transform: uppercase;
}

nav a,
.phone-link {
  color: var(--navy);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.04em;
}

.phone-link {
  color: var(--orange);
  white-space: nowrap;
}

.hero {
  align-items: center;
  background:
    linear-gradient(90deg, rgba(13, 35, 48, 0.84), rgba(13, 35, 48, 0.18)),
    url("/assets/hero-tech.jpg") center / cover;
  display: flex;
  min-height: 620px;
  padding: 64px clamp(22px, 6vw, 86px);
}

.hero-panel {
  color: white;
  display: grid;
  gap: 12px;
  max-width: 560px;
  text-transform: uppercase;
}

.kicker {
  font-size: clamp(42px, 6.5vw, 78px);
  font-weight: 900;
  letter-spacing: 0.02em;
  line-height: 0.95;
  margin: 0;
}

.kicker em {
  color: var(--orange);
  font-style: italic;
}

.hero-submit,
.button {
  align-items: center;
  border: 0;
  border-radius: 0;
  cursor: pointer;
  display: inline-flex;
  font: inherit;
  font-weight: 900;
  justify-content: center;
  letter-spacing: 0.04em;
  min-height: 48px;
  padding: 0 22px;
  text-transform: uppercase;
}

.hero-submit,
.button.primary {
  background: var(--orange);
  color: white;
}

.button.full {
  width: 100%;
}

.button:disabled {
  background: #cbd5e1;
  color: #475569;
  cursor: not-allowed;
}

.hero-submit {
  margin-top: 22px;
  width: max-content;
}

.intro-section,
.feature-section,
.assignment-section,
.about-section {
  display: grid;
  gap: clamp(28px, 5vw, 72px);
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  margin: 0 auto;
  max-width: 1180px;
  padding: clamp(56px, 8vw, 104px) 24px;
}

.intro-section {
  align-items: center;
}

.intro-image img,
.feature-section img {
  box-shadow: var(--shadow);
  display: block;
  height: 100%;
  max-height: 470px;
  object-fit: cover;
  width: 100%;
}

.intro-copy,
.feature-copy {
  display: grid;
  gap: 18px;
}

.section-label {
  color: var(--orange);
  font-size: 13px;
  font-weight: 900;
  letter-spacing: 0.12em;
  margin: 0;
  text-transform: uppercase;
}

h1,
h2 {
  color: var(--navy);
  font-weight: 900;
  letter-spacing: 0.01em;
  line-height: 1.05;
  margin: 0;
  text-transform: uppercase;
}

h1 {
  font-size: clamp(34px, 5vw, 58px);
}

h2 {
  font-size: clamp(28px, 4vw, 48px);
}

p {
  color: var(--muted);
  font-size: 17px;
  line-height: 1.72;
}

.services-section {
  background: white;
  padding: clamp(54px, 7vw, 88px) 24px;
  text-align: center;
}

.services-section > * {
  margin-left: auto;
  margin-right: auto;
  max-width: 1180px;
}

.service-tabs {
  border-bottom: 1px solid var(--line);
  display: flex;
  flex-wrap: wrap;
  gap: 28px;
  justify-content: center;
  margin-top: 18px;
  padding-bottom: 22px;
  text-transform: uppercase;
}

.service-tabs a {
  color: var(--navy);
  font-size: 14px;
  font-weight: 900;
}

.service-grid {
  display: grid;
  gap: 22px;
  grid-template-columns: repeat(3, 1fr);
  margin-top: 34px;
}

.service-card {
  background: var(--navy);
  color: white;
  min-height: 330px;
  overflow: hidden;
  position: relative;
  text-align: left;
}

.service-card::after {
  background: linear-gradient(180deg, rgba(21, 50, 67, 0.05), rgba(21, 50, 67, 0.88));
  content: "";
  inset: 0;
  position: absolute;
}

.service-card img {
  display: block;
  height: 100%;
  object-fit: cover;
  position: absolute;
  width: 100%;
}

.service-card h2 {
  bottom: 26px;
  color: white;
  font-size: 24px;
  left: 24px;
  position: absolute;
  right: 24px;
  z-index: 1;
}

.feature-section {
  align-items: center;
}

.feature-section.reverse .feature-copy {
  order: 2;
}

.feature-band {
  background: var(--navy);
  color: white;
  display: grid;
  gap: 1px;
  grid-template-columns: repeat(3, 1fr);
}

.feature-band > div {
  background: rgba(255, 255, 255, 0.04);
  padding: clamp(32px, 5vw, 60px);
}

.feature-band h2 {
  color: white;
  font-size: clamp(24px, 3vw, 34px);
}

.feature-band p {
  color: rgba(255, 255, 255, 0.72);
}

.assignment-section {
  align-items: start;
  background: var(--soft);
  max-width: none;
  padding-left: clamp(22px, 6vw, 86px);
  padding-right: clamp(22px, 6vw, 86px);
}

.assignment-section > * {
  max-width: 590px;
}

.business-card {
  background: white;
  border-left: 6px solid var(--orange);
  box-shadow: 0 14px 34px rgba(21, 50, 67, 0.08);
  display: grid;
  gap: 8px;
  margin-top: 28px;
  padding: 24px;
}

.business-card strong {
  color: var(--navy);
  font-size: 19px;
}

.business-card span,
.business-card a {
  color: var(--muted);
}

.checkout-shell {
  background: var(--paper);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  padding: 24px;
}

.checkout-product span {
  color: var(--muted);
  font-size: 13px;
  font-weight: 800;
  text-transform: uppercase;
}

.checkout-product {
  background: #f6f8f9;
  border: 1px solid var(--line);
  display: grid;
  gap: 5px;
  margin-bottom: 16px;
  padding: 14px 16px;
}

.checkout-product strong {
  color: var(--navy);
  font-size: 17px;
}

.checkout-product small {
  color: var(--muted);
  line-height: 1.45;
}

.amount-field {
  display: grid;
  gap: 8px;
  margin-bottom: 16px;
}

.amount-field span {
  align-items: center;
  background: white;
  border: 1px solid var(--line);
  display: grid;
  grid-template-columns: auto 1fr;
  min-height: 54px;
  padding: 0 14px;
}

.amount-field b {
  color: var(--orange);
  font-size: 24px;
  line-height: 1;
  padding-right: 8px;
}

.amount-field input {
  border: 0;
  color: var(--navy);
  font-size: 28px;
  font-weight: 900;
  min-height: 52px;
  padding: 0;
}

.amount-field input:focus {
  outline: none;
}

.amount-field small {
  color: var(--muted);
  font-size: 12px;
  line-height: 1.4;
  text-transform: none;
}

.product-picker {
  border: 0;
  margin: 0 0 16px;
  padding: 0;
}

.product-picker legend,
label {
  color: var(--muted);
  font-size: 13px;
  font-weight: 900;
  letter-spacing: 0.04em;
  margin-bottom: 8px;
  text-transform: uppercase;
}

.product-options {
  display: grid;
  gap: 10px;
  grid-template-columns: 1fr;
}

.product-option {
  align-items: center;
  background: white;
  border: 1px solid var(--line);
  cursor: pointer;
  display: grid;
  gap: 10px;
  grid-template-columns: auto minmax(0, 1fr) auto;
  min-height: 70px;
  padding: 12px;
}

.product-option:hover,
.product-option.selected {
  border-color: var(--orange);
  box-shadow: 0 10px 28px rgba(207, 69, 32, 0.12);
}

.product-option input {
  accent-color: var(--orange);
  height: 16px;
  min-height: 16px;
  padding: 0;
  width: 16px;
}

.product-option span {
  display: grid;
  gap: 3px;
}

.product-option strong {
  color: var(--navy);
  font-size: 14px;
}

.product-option small {
  color: var(--muted);
  font-size: 12px;
  line-height: 1.35;
}

.product-option b {
  color: var(--orange);
  font-size: 17px;
}

.payment-method-title {
  display: grid;
  gap: 4px;
  margin: 4px 0 12px;
}

.payment-method-title strong {
  color: var(--navy);
}

.payment-method-title span {
  color: var(--muted);
  font-size: 13px;
}

.notice {
  background: #fff7df;
  border: 1px solid #f2da8c;
  color: #7a5a00;
  line-height: 1.5;
  margin-bottom: 16px;
  padding: 14px 16px;
}

.card-form {
  display: grid;
  gap: 14px;
}

label {
  display: grid;
  gap: 7px;
  margin: 0;
}

.field-grid {
  display: grid;
  gap: 12px;
  grid-template-columns: 1fr 1fr;
}

input,
.paypal-field {
  background: white;
  border: 1px solid var(--line);
  min-height: 46px;
  padding: 12px;
  width: 100%;
}

input {
  color: var(--ink);
  font: inherit;
}

.paypal-field:empty {
  background:
    linear-gradient(90deg, rgba(216, 222, 228, 0.45), rgba(255, 255, 255, 0.85)),
    white;
  position: relative;
}

.paypal-field:empty::before {
  color: #9aa8b7;
  content: attr(data-placeholder);
  font-size: 15px;
  left: 12px;
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
}

.paypal-divider {
  align-items: center;
  color: var(--muted);
  display: flex;
  font-size: 13px;
  font-weight: 900;
  gap: 12px;
  margin: 18px 0 12px;
  text-transform: uppercase;
}

.paypal-divider::before,
.paypal-divider::after {
  background: var(--line);
  content: "";
  flex: 1;
  height: 1px;
}

.paypal-container {
  min-height: 46px;
}

.result-message {
  color: var(--muted);
  line-height: 1.5;
  min-height: 24px;
}

.result-message.success {
  color: var(--green);
  font-weight: 800;
}

.result-message.error {
  color: #b42318;
  font-weight: 800;
}

.about-section {
  align-items: center;
  background: white;
}

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

.team-strip img {
  aspect-ratio: 1 / 1;
  object-fit: cover;
  width: 100%;
}

.site-footer {
  background: var(--navy);
  color: rgba(255, 255, 255, 0.74);
  display: grid;
  gap: 24px;
  grid-template-columns: 1.3fr 1fr auto;
  padding: 36px clamp(22px, 6vw, 86px);
}

.site-footer div {
  display: grid;
  gap: 7px;
}

.site-footer strong,
.site-footer a {
  color: white;
}

@media (max-width: 960px) {
  .header-inner {
    align-items: flex-start;
    flex-direction: column;
  }

  nav {
    justify-content: flex-start;
  }

  .intro-section,
  .feature-section,
  .assignment-section,
  .about-section,
  .service-grid,
  .feature-band,
  .site-footer {
    grid-template-columns: 1fr;
  }

  .feature-section.reverse .feature-copy {
    order: initial;
  }
}

@media (max-width: 560px) {
  .brand img {
    height: 58px;
  }

  .hero {
    min-height: 520px;
  }

  .kicker {
    font-size: 38px;
  }

  .field-grid,
  .checkout-summary,
  .team-strip {
    grid-template-columns: 1fr;
  }

  .checkout-summary {
    align-items: stretch;
    flex-direction: column;
  }
}