/* Design tokens */
:root {
  --color-bg: #ffffff;
  --color-bg-alt: #f5f7fa;
  --color-primary: #00a651;
  --color-primary-hover: #008f46;
  --color-text: #4a5568;
  --color-heading: #1a1a2e;
  --color-border: #e2e8f0;
  --color-white: #ffffff;

  --font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --container-max: 1200px;
  --container-narrow: 760px;
  --radius-sm: 8px;
  --radius-md: 12px;
  --shadow-card: 0 2px 12px rgba(0, 0, 0, 0.06);
  --header-height: 72px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-family);
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-text);
  background: var(--color-bg);
}

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

a {
  color: var(--color-primary);
  text-decoration: none;
}

a:hover {
  color: var(--color-primary-hover);
}

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

ul {
  padding: 0;
  list-style: none;
}

.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 24px;
}

.container--narrow {
  max-width: var(--container-narrow);
}

.section {
  padding: 64px 0;
}

.section--alt {
  background: var(--color-bg-alt);
}

.section__title {
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--color-heading);
  margin-bottom: 24px;
  line-height: 1.3;
}

.section__title--center {
  text-align: center;
}

.section__text {
  font-size: 1.0625rem;
  line-height: 1.7;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 24px;
  font-family: inherit;
  font-size: 0.9375rem;
  font-weight: 600;
  line-height: 1.2;
  border-radius: var(--radius-sm);
  border: none;
  cursor: pointer;
  transition: background-color 0.2s, color 0.2s, transform 0.15s;
  text-decoration: none;
}

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

.btn--primary:hover {
  background: var(--color-primary-hover);
  color: var(--color-white);
}

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

.btn--white:hover {
  background: #f0fdf4;
  color: var(--color-primary-hover);
}

.btn--lg {
  padding: 16px 32px;
  font-size: 1rem;
}

.btn:active {
  transform: translateY(1px);
}

/* Cards */
.card {
  background: var(--color-white);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-card);
  padding: 24px;
}

.card--compact {
  padding: 20px;
}

.card--compact p {
  font-weight: 500;
  color: var(--color-heading);
}

.card--quote {
  border-left: 4px solid var(--color-primary);
}

.card--quote p {
  font-style: italic;
  color: var(--color-heading);
  line-height: 1.7;
}

.card-grid {
  display: grid;
  gap: 16px;
}

.card-grid--2 {
  grid-template-columns: 1fr;
}

.card-grid--3 {
  grid-template-columns: 1fr;
}

/* Lists */
.check-list li,
.bullet-list li,
.feature-list li {
  position: relative;
  padding-left: 28px;
  margin-bottom: 12px;
  line-height: 1.6;
}

.check-list li::before {
  content: "✓";
  position: absolute;
  left: 0;
  top: 0;
  width: 20px;
  height: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-primary);
  color: var(--color-white);
  border-radius: 50%;
  font-size: 0.6875rem;
  font-weight: 700;
  line-height: 1;
}

.bullet-list li::before {
  content: "";
  position: absolute;
  left: 6px;
  top: 10px;
  width: 8px;
  height: 8px;
  background: var(--color-primary);
  border-radius: 50%;
}

.feature-list {
  display: grid;
  gap: 8px;
  max-width: 640px;
  margin: 0 auto 48px;
}

.feature-list li::before {
  content: "●";
  position: absolute;
  left: 0;
  color: var(--color-primary);
  font-size: 0.75rem;
  top: 2px;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: #ffffff;
  border-bottom: 1px solid var(--color-border);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: var(--header-height);
  gap: 16px;
}

.nav-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(26, 26, 46, 0.45);
  z-index: 200;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}

.nav-backdrop.is-visible {
  opacity: 1;
  pointer-events: auto;
}

body.menu-open {
  overflow: hidden;
}

body.menu-open .site-header {
  z-index: 202;
}

.header__logo img {
  height: 28px;
  width: auto;
}

.header__burger {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 10px;
  background: none;
  border: none;
  cursor: pointer;
  z-index: 110;
}

.header__burger span {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--color-heading);
  border-radius: 2px;
  transition: transform 0.2s, opacity 0.2s;
}

.header__burger.is-open span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.header__burger.is-open span:nth-child(2) {
  opacity: 0;
}

.header__burger.is-open span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.header__nav {
  position: fixed;
  top: var(--header-height);
  right: 0;
  bottom: 0;
  left: auto;
  width: min(320px, 100%);
  z-index: 201;
  background: #ffffff;
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 24px;
  transform: translateX(100%);
  visibility: hidden;
  transition: transform 0.3s ease, visibility 0.3s ease;
  box-shadow: -4px 0 24px rgba(0, 0, 0, 0.12);
  overflow-y: auto;
}

.header__nav.is-open {
  transform: translateX(0);
  visibility: visible;
}

.header__menu {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.header__menu a {
  font-weight: 500;
  color: var(--color-heading);
  font-size: 1.0625rem;
}

.header__menu a:hover {
  color: var(--color-primary);
}

.header__nav .btn {
  width: 100%;
}

/* Hero */
.hero {
  padding-top: 48px;
  padding-bottom: 64px;
}

.hero__grid {
  display: grid;
  gap: 40px;
  align-items: center;
}

.hero__title {
  font-size: 2rem;
  font-weight: 700;
  color: var(--color-heading);
  line-height: 1.2;
  margin-bottom: 16px;
}

.hero__subtitle {
  font-size: 1.125rem;
  color: var(--color-heading);
  font-weight: 500;
  margin-bottom: 12px;
  line-height: 1.5;
}

.hero__desc {
  margin-bottom: 28px;
  font-size: 1.0625rem;
}

.hero__visual {
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  border: 1px solid var(--color-border);
}

.hero__visual img {
  width: 100%;
}

/* Two columns */
.two-col {
  display: grid;
  gap: 48px;
}

.tagline {
  margin-top: 20px;
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--color-heading);
  line-height: 1.5;
  padding: 20px;
  background: var(--color-white);
  border-radius: var(--radius-md);
  border-left: 4px solid var(--color-primary);
  box-shadow: var(--shadow-card);
}

.section--alt .tagline {
  background: var(--color-bg);
}

/* Steps */
.steps {
  display: flex;
  flex-direction: column;
  gap: 0;
  margin-top: 16px;
}

.steps__item {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  padding: 20px;
  background: var(--color-white);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-card);
}

.steps__num {
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-primary);
  color: var(--color-white);
  font-weight: 700;
  border-radius: 50%;
  font-size: 1.125rem;
}

.steps__title {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-primary);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: 4px;
}

.steps__content p {
  color: var(--color-heading);
  font-weight: 500;
}

.steps__connector {
  width: 2px;
  height: 24px;
  background: var(--color-primary);
  margin-left: 39px;
  opacity: 0.4;
}

/* Testimonials / whats next */
.whats-next__note {
  margin: 24px 0;
  font-size: 1.0625rem;
  font-weight: 500;
  color: var(--color-heading);
}

/* FAQ */
.faq {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.faq__item {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.faq__item[open] {
  border-color: var(--color-primary);
}

.faq__question {
  padding: 20px 48px 20px 20px;
  font-weight: 600;
  color: var(--color-heading);
  cursor: pointer;
  list-style: none;
  position: relative;
  line-height: 1.4;
}

.faq__question::-webkit-details-marker {
  display: none;
}

.faq__question::after {
  content: "+";
  position: absolute;
  right: 20px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 1.5rem;
  font-weight: 400;
  color: var(--color-primary);
  line-height: 1;
  transition: transform 0.2s;
}

.faq__item[open] .faq__question::after {
  content: "−";
}

.faq__answer {
  padding: 0 20px 20px;
}

.faq__answer p {
  line-height: 1.7;
}

/* Final CTA */
.final-cta {
  padding-bottom: 32px;
}

.final-cta__banner {
  background: var(--color-primary);
  border-radius: var(--radius-md);
  padding: 40px 32px;
  display: flex;
  flex-direction: column;
  gap: 24px;
  align-items: flex-start;
}

.final-cta__title {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-white);
  line-height: 1.3;
}

.final-cta__desc {
  color: rgba(255, 255, 255, 0.9);
  margin-top: 12px;
  line-height: 1.6;
}

/* Contact */
.contact {
  padding-top: 32px;
  padding-bottom: 48px;
}

.contact__link-wrap {
  text-align: center;
}

.contact__link {
  font-size: 1.125rem;
  font-weight: 600;
  border-bottom: 2px solid var(--color-primary);
  padding-bottom: 2px;
}

/* Footer */
.footer {
  background: var(--color-heading);
  color: rgba(255, 255, 255, 0.7);
  padding: 32px 0;
}

.footer__inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  text-align: center;
}

.footer__logo img {
  filter: brightness(0) invert(1);
  opacity: 0.9;
}

.footer__copy {
  font-size: 0.875rem;
}

.footer a {
  color: rgba(255, 255, 255, 0.9);
}

.footer a:hover {
  color: var(--color-white);
}

/* Tablet */
@media (min-width: 768px) {
  .container {
    padding: 0 32px;
  }

  .section {
    padding: 80px 0;
  }

  .hero__title {
    font-size: 2.5rem;
  }

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

  .card-grid--3 {
    grid-template-columns: repeat(2, 1fr);
  }

  .feature-list {
    grid-template-columns: repeat(2, 1fr);
    max-width: none;
  }

  .final-cta__banner {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    padding: 48px;
  }

  .final-cta__title {
    font-size: 1.75rem;
  }

  .final-cta__banner .btn {
    flex-shrink: 0;
  }
}

/* Desktop */
@media (min-width: 1024px) {
  .container {
    padding: 0 40px;
  }

  .nav-backdrop {
    display: none;
  }

  .header__burger {
    display: none;
  }

  .header__nav {
    position: fixed;
    top: 0;
    left: 50%;
    right: auto;
    bottom: auto;
    width: min(var(--container-max), 100%);
    height: var(--header-height);
    padding: 0 40px;
    flex-direction: row;
    align-items: center;
    justify-content: flex-end;
    gap: 32px;
    transform: translateX(-50%);
    visibility: visible;
    background: transparent;
    box-shadow: none;
    overflow-y: visible;
    pointer-events: none;
  }

  .header__nav.is-open {
    transform: translateX(-50%);
  }

  .header__nav .header__menu,
  .header__nav .btn {
    pointer-events: auto;
  }

  .header__menu {
    flex-direction: row;
    gap: 28px;
  }

  .header__menu a {
    font-size: 0.9375rem;
  }

  .header__nav .btn {
    width: auto;
  }

  .hero__grid {
    grid-template-columns: 1fr 1fr;
    gap: 48px;
  }

  .hero__title {
    font-size: 2.75rem;
  }

  .two-col {
    grid-template-columns: 1fr 1fr;
    gap: 64px;
  }

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

  .steps {
    flex-direction: row;
    align-items: stretch;
    gap: 0;
  }

  .steps__item {
    flex: 1;
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: 28px 16px;
  }

  .steps__connector {
    width: 32px;
    height: auto;
    min-height: 2px;
    margin: 52px 0 0;
    align-self: flex-start;
    background: linear-gradient(to right, var(--color-primary), var(--color-primary));
    opacity: 0.35;
  }

  .section__title {
    font-size: 2rem;
  }
}