:root {
  color-scheme: light;
  --bg: #ffffff;
  --text: #2c2c2c;
  --accent: #d32f2f;
  --accent-dark: #b71c1c;
  --subtle: #f5f5f5;
  --mute: #94a3b8;
  --radius-lg: 16px;
  --radius-sm: 8px;
  --max-width: 1200px;
  --section-pad: 120px;
  --section-pad-mobile: 80px;
  --section-pad-ma: 160px;
  --body-size: 18px;
  --micro-size: 14px;
  --focus-ring: 2px solid var(--text);
  --focus-offset: 2px;
}

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

body {
  margin: 0;
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  font-size: var(--body-size);
}

h1,
h2,
h3 {
  margin: 0;
  font-weight: 700;
}

h3 {
  font-size: 24px;
}

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

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

button,
input {
  font-family: inherit;
}

button:focus-visible,
input:focus-visible,
a:focus-visible {
  outline: var(--focus-ring);
  outline-offset: var(--focus-offset);
}

.skip-link {
  position: absolute;
  top: -100px;
  left: 16px;
  padding: 12px 20px;
  background: var(--text);
  color: var(--bg);
  font-weight: 600;
  z-index: 100;
  border-radius: var(--radius-sm);
  transition: top 0.2s ease;
}

.skip-link:focus {
  top: 16px;
  outline: var(--focus-ring);
  outline-offset: var(--focus-offset);
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  border: 0;
  padding: 0;
  white-space: nowrap;
  clip-path: inset(100%);
  clip: rect(0 0 0 0);
  overflow: hidden;
}

.container {
  width: min(100% - 80px, var(--max-width));
  margin: 0 auto;
}

.page-loader {
  position: fixed;
  inset: 0;
  background: rgba(255, 255, 255, 0.9);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 16px;
  z-index: 9999;
  transition: opacity 0.4s ease, visibility 0.4s ease;
}

.page-loader.hidden {
  opacity: 0;
  visibility: hidden;
}

.loader-orb {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: var(--text);
  animation: pulse 1.4s ease-in-out infinite;
}

.site-header {
  position: sticky;
  top: 0;
  left: 0;
  right: 0;
  width: 100%;
  z-index: 20;
  background: rgba(255, 255, 255, 0.98);
  border-bottom: 1px solid var(--subtle);
  box-sizing: border-box;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 12px 20px;
  min-height: 56px;
  width: 100%;
  box-sizing: border-box;
  flex-wrap: nowrap;
}

.header-inner .logo {
  flex-shrink: 0;
}

.header-inner .nav-wrap {
  flex-shrink: 1;
  min-width: 0;
  display: flex;
  align-items: center;
  gap: 16px;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 0;
  border: none;
  background: transparent;
  cursor: pointer;
  border-radius: var(--radius-sm);
  color: var(--text);
  transition: background 0.2s ease;
}

.nav-toggle:hover,
.nav-toggle:focus-visible {
  background: var(--subtle);
  outline: var(--focus-ring);
  outline-offset: var(--focus-offset);
}

.nav-toggle-bar {
  display: block;
  width: 22px;
  height: 2px;
  background: currentColor;
  border-radius: 1px;
  transition: transform 0.25s ease, opacity 0.25s ease;
}

.site-header.is-open .nav-toggle-bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.site-header.is-open .nav-toggle-bar:nth-child(2) {
  opacity: 0;
}

.site-header.is-open .nav-toggle-bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.logo-mark {
  width: 36px;
  height: 36px;
  border-radius: 12px;
  background: var(--text);
  display: grid;
  place-items: center;
  color: #ffffff;
  font-weight: 800;
}

.nav-wrap {
  display: flex;
  align-items: center;
  gap: 24px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 24px;
  color: var(--mute);
  font-size: var(--micro-size);
  flex-shrink: 1;
  min-width: 0;
}

.nav-links a:hover {
  color: var(--text);
}

.header-cta {
  display: inline-flex;
  align-items: center;
  background: transparent;
  border: 1px solid var(--accent);
  color: var(--accent);
  padding: 10px 20px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: 0.3s ease;
}

.header-cta:hover {
  background: var(--accent);
  color: #ffffff;
}

.hero {
  position: relative;
  overflow: hidden;
  padding: 140px 0 160px;
}

.hero-background {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--subtle) 0%, #ffffff 50%, var(--subtle) 100%);
  z-index: 0;
}

.hero-background::before {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(211, 47, 47, 0.05) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

.hero-centered {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 900px;
  margin: 0 auto;
}

.eyebrow {
  font-size: var(--micro-size);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--mute);
  margin-bottom: 24px;
}

.hero-slogan {
  font-size: clamp(48px, 8vw, 80px);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.1;
  margin: 0;
  color: var(--text);
}

.slogan-highlight {
  color: var(--accent);
}

.hero-desc {
  font-size: clamp(18px, 2vw, 22px);
  color: var(--mute);
  max-width: 640px;
  margin: 32px auto 0;
  line-height: 1.6;
}

.cta-button {
  display: inline-flex;
  align-items: center;
  padding: 16px 40px;
  border-radius: var(--radius-sm);
  border: none;
  background: var(--accent);
  color: #ffffff;
  font-size: 18px;
  font-weight: 600;
  cursor: pointer;
  position: relative;
  transition: transform 0.3s ease, background 0.3s ease;
}

.cta-button:hover {
  transform: scale(1.05);
  background: var(--accent-dark);
}

.cta-button:disabled {
  opacity: 0.7;
  cursor: not-allowed;
  transform: none;
}

.cta-button:disabled:hover {
  background: var(--accent);
  transform: none;
}

.cta-button.outline {
  background: transparent;
  border: 1px solid var(--accent);
  color: var(--accent);
}

.scroll-indicator {
  position: absolute;
  left: 50%;
  bottom: 32px;
  transform: translateX(-50%);
  width: 32px;
  height: 48px;
  border: 2px solid var(--mute);
  border-radius: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2;
  cursor: pointer;
  transition: border-color 0.2s ease, background-color 0.2s ease;
}

.scroll-indicator:hover {
  border-color: var(--text);
}

.scroll-indicator:focus-visible {
  outline: var(--focus-ring);
  outline-offset: var(--focus-offset);
}

.scroll-indicator span {
  display: block;
  width: 6px;
  height: 6px;
  background: var(--text);
  border-radius: 50%;
  animation: scroll 2s ease-in-out infinite;
}

.section {
  padding: var(--section-pad) 0;
}

.section-ma {
  padding-top: var(--section-pad-ma);
  padding-bottom: var(--section-pad-ma);
}

.section-cta {
  margin-top: 48px;
  text-align: center;
}

.problem {
  background: var(--subtle);
  padding-top: 64px;
  padding-bottom: 64px;
}

.problem.section-ma {
  padding-top: 64px;
  padding-bottom: 64px;
}

.problem-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.problem-intro {
  max-width: 520px;
  margin: 0 auto 40px;
}

.problem-intro .eyebrow {
  margin-bottom: 8px;
}

.problem-intro h2 {
  margin-top: 0;
  margin-bottom: 12px;
  font-size: clamp(24px, 3.5vw, 32px);
}

.problem-lead {
  margin: 0;
  font-size: 16px;
  line-height: 1.6;
  color: var(--mute);
}

.section h2 {
  font-size: clamp(28px, 4vw, 36px);
  margin: 16px 0;
}

.section-lead {
  max-width: 540px;
  color: var(--mute);
  margin-bottom: 48px;
}

.stats-grid,
.impact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  row-gap: 16px;
  column-gap: 20px;
  width: 100%;
  max-width: 720px;
  margin: 0 auto;
}

.problem .stats-grid {
  max-width: 680px;
  gap: 16px;
}

.stat-card,
.impact-card {
  background: var(--bg);
  border: 1px solid rgba(0, 0, 0, 0.06);
  border-radius: var(--radius-sm);
  padding: 24px 20px;
  text-align: center;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.problem .stat-card {
  padding: 20px 18px;
  border-left: 3px solid var(--accent);
  text-align: left;
}

.stat-card:hover,
.impact-card:hover {
  border-color: var(--mute);
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.04);
}

.problem .stat-card:hover {
  border-left-color: var(--accent);
}

.stat-number {
  display: block;
  font-size: clamp(28px, 3.5vw, 36px);
  font-weight: 700;
  color: var(--accent);
  letter-spacing: -0.02em;
  margin-bottom: 6px;
}

.problem .stat-number {
  font-size: clamp(26px, 3vw, 32px);
  margin-bottom: 4px;
}

.stat-label,
.stat-card p,
.impact-card p {
  margin: 0;
  font-size: var(--micro-size);
  line-height: 1.5;
  color: var(--mute);
}

.problem .stat-label {
  font-size: 13px;
  line-height: 1.45;
}

.impact-card .stat-number {
  color: var(--text);
}

.solution-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.solution-intro {
  max-width: 640px;
  margin: 0 auto 40px;
}

.solution-intro .eyebrow {
  margin-bottom: 12px;
}

.solution-intro h2 {
  margin-top: 0;
  margin-bottom: 20px;
}

.solution-lead {
  margin: 0;
  font-size: 18px;
  line-height: 1.65;
  color: var(--mute);
}

.solution .flow-diagram {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
  margin: 0 0 56px;
}

.flow-node {
  padding: 18px 28px;
  border-radius: var(--radius-lg);
  background: var(--bg);
  border: 1px solid rgba(0, 0, 0, 0.08);
  font-size: 15px;
  font-weight: 500;
  color: var(--text);
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.flow-node:hover {
  border-color: var(--mute);
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
}

.flow-node.highlight {
  background: var(--accent);
  color: #ffffff;
  border-color: var(--accent);
  font-weight: 600;
}

.flow-node.highlight:hover {
  border-color: var(--accent-dark);
  box-shadow: 0 4px 16px rgba(211, 47, 47, 0.25);
}

.flow-arrow {
  width: 40px;
  height: 2px;
  background: var(--mute);
  position: relative;
  flex-shrink: 0;
}

.flow-arrow::after {
  content: "";
  position: absolute;
  right: -4px;
  top: 50%;
  transform: translateY(-50%);
  border: 5px solid transparent;
  border-left-color: var(--mute);
  border-left-width: 6px;
}

.feature-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  row-gap: 40px;
  column-gap: 80px;
  width: 100%;
  max-width: 900px;
  margin: 0 auto;
}

.solution .feature-row {
  margin-bottom: 0;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  max-width: 800px;
}

.solution .feature-card {
  background: var(--bg);
  border: 1px solid rgba(0, 0, 0, 0.08);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  text-align: center;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.solution .feature-card:hover {
  border-color: var(--mute);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
}

.solution .feature-card h3 {
  margin: 0 0 10px;
  font-size: 18px;
}

.solution .feature-card p {
  margin: 0;
  font-size: 15px;
  line-height: 1.55;
  color: var(--mute);
}

.feature-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  margin-bottom: 20px;
  border-radius: var(--radius-sm);
  background: var(--subtle);
  color: var(--accent);
}

.feature-icon svg {
  width: 32px;
  height: 32px;
  flex-shrink: 0;
}

.feature-card {
  background: var(--subtle);
  border-radius: var(--radius-lg);
  padding: 32px;
  border: 1px solid var(--subtle);
}

.feature-link {
  display: inline-block;
  margin-top: 16px;
  color: var(--accent);
  font-weight: 500;
}

.feature-link:hover {
  text-decoration: underline;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(240px, 1fr));
  row-gap: 40px;
  column-gap: 80px;
}

.features-grid.four-col {
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}

.how-it-works {
  background: var(--subtle);
  padding-top: 64px;
  padding-bottom: 64px;
}

.how-it-works.section-ma {
  padding-top: 64px;
  padding-bottom: 64px;
}

.how-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.how-intro {
  max-width: 560px;
  margin: 0 auto 40px;
}

.how-intro h2 {
  margin-top: 0;
  margin-bottom: 12px;
  font-size: clamp(24px, 3.5vw, 30px);
}

.how-lead {
  margin: 0;
  font-size: 16px;
  line-height: 1.6;
  color: var(--mute);
}

.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  width: 100%;
  max-width: 800px;
  margin: 0 auto 0;
  padding: 0;
  list-style: none;
  counter-reset: step;
}

.step-card {
  background: var(--bg);
  border-radius: var(--radius-lg);
  padding: 28px 22px;
  border: 1px solid rgba(0, 0, 0, 0.06);
  position: relative;
  text-align: center;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.step-card:hover {
  border-color: var(--mute);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
}

.step-number {
  display: block;
  font-size: clamp(28px, 3.5vw, 36px);
  font-weight: 700;
  color: var(--accent);
  letter-spacing: -0.02em;
  margin-bottom: 12px;
}

.step-card h3 {
  margin: 0 0 8px;
  font-size: 18px;
}

.step-desc,
.step-card p {
  margin: 0;
  font-size: 14px;
  line-height: 1.5;
  color: var(--mute);
}

.pricing-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.pricing-intro {
  max-width: 640px;
  margin: 0 auto 56px;
}

.pricing-intro h2 {
  margin-top: 0;
  margin-bottom: 20px;
}

.pricing-lead {
  margin: 0;
  font-size: 18px;
  line-height: 1.65;
  color: var(--mute);
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  width: 100%;
  max-width: 960px;
  margin: 0 auto;
  align-items: stretch;
}

.price-card {
  background: var(--bg);
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  border: 1px solid rgba(0, 0, 0, 0.08);
  display: flex;
  flex-direction: column;
  gap: 20px;
  text-align: center;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.price-card:hover {
  border-color: var(--mute);
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.06);
}

.price-card-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
  color: var(--accent);
}

.price-card-icon svg {
  width: 24px;
  height: 24px;
}

.price-card h3 {
  margin: 0;
  font-size: 22px;
}

.price {
  font-size: clamp(20px, 2.5vw, 28px);
  font-weight: 700;
  color: var(--accent);
  letter-spacing: -0.02em;
  margin: 4px 0 0;
}

.price span {
  display: block;
  font-size: var(--micro-size);
  font-weight: 500;
  color: var(--mute);
  letter-spacing: 0;
  margin-top: 2px;
}

.price-desc {
  margin: 0;
  font-size: 15px;
  color: var(--mute);
  line-height: 1.5;
}

.price-card.featured {
  background: var(--subtle);
  border-color: var(--text);
  border-width: 2px;
  padding: 40px 28px;
}

.price-card.featured .price {
  font-size: clamp(24px, 3vw, 32px);
}

.price-card ul {
  padding: 0;
  margin: 0;
  list-style: none;
  color: var(--text);
  font-size: 15px;
  line-height: 1.6;
  text-align: left;
  flex: 1;
}

.price-card li {
  padding: 6px 0;
  padding-left: 24px;
  position: relative;
}

.price-card li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--accent);
  font-weight: 700;
}

.price-card .cta-button {
  margin-top: auto;
  width: 100%;
  justify-content: center;
}

.trust-signals {
  margin-top: 48px;
  text-align: center;
}

.trust-line {
  color: var(--mute);
  font-size: var(--micro-size);
  max-width: 520px;
  margin: 0 auto 24px;
  line-height: 1.6;
}

.sdg-badges {
  display: flex;
  gap: 16px;
  margin-top: 28px;
  flex-wrap: wrap;
  justify-content: center;
}

.sdg {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: var(--bg);
  color: var(--text);
  padding: 12px 18px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 500;
  border: 1px solid rgba(0, 0, 0, 0.08);
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.sdg:hover {
  border-color: var(--mute);
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.05);
}

.sdg-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  flex-shrink: 0;
  border-radius: 6px;
  background: var(--subtle);
  color: var(--accent);
}

.sdg-icon svg {
  width: 20px;
  height: 20px;
}

.cta {
  background: var(--subtle);
  text-align: center;
  padding-top: 56px;
  padding-bottom: 56px;
}

.cta.section-ma {
  padding-top: 56px;
  padding-bottom: 56px;
}

.cta-slogan {
  font-size: clamp(24px, 4vw, 34px);
  letter-spacing: -0.02em;
  color: var(--accent);
  margin: 0 0 8px;
}

.cta-inner {
  display: grid;
  gap: 16px;
  justify-items: center;
  max-width: 480px;
  margin: 0 auto;
}

.cta-inner > p {
  margin: 0;
  font-size: 16px;
  color: var(--mute);
  line-height: 1.5;
}

.cta-form {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  justify-content: center;
  width: 100%;
  margin-top: 4px;
}

.cta-form input {
  flex: 1;
  min-width: 200px;
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(0, 0, 0, 0.1);
  background: #ffffff;
  color: var(--text);
  font-size: 15px;
}

.cta-note {
  color: var(--mute);
}

.cta-link {
  color: var(--text);
  text-decoration: underline;
}

.form-success {
  min-height: 24px;
  color: var(--text);
}

.footer {
  padding: 0;
  background: var(--subtle);
  border-top: 1px solid rgba(0, 0, 0, 0.06);
}

.footer-inner {
  padding: 48px 0 0;
  width: 100%;
  box-sizing: border-box;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 32px 24px;
  max-width: var(--max-width);
  margin: 0 auto;
  align-items: start;
}

.footer-brand {
  max-width: 300px;
}

.footer-logo {
  display: inline-flex;
  margin-bottom: 12px;
}

.footer-tagline {
  margin: 0;
  font-size: 14px;
  line-height: 1.6;
  color: var(--mute);
}

.footer-col {
  padding: 0;
}

.footer-heading {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text);
  margin: 0 0 12px;
}

.footer-links {
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer-links li {
  margin: 0;
}

.footer-links a {
  display: block;
  padding: 5px 0;
  font-size: 14px;
  color: var(--mute);
  transition: color 0.2s ease;
}

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

.footer-bottom {
  margin-top: 40px;
  padding: 20px 0 24px;
  text-align: center;
  font-size: var(--micro-size);
  color: var(--mute);
  border-top: 1px solid rgba(0, 0, 0, 0.06);
}

.footer-bottom p {
  margin: 0;
}

/* 3 breakpoints: mobile (< 768px), tablet (768–1439px), desktop (1440px+) */
@media (max-width: 767px) {
  .container {
    width: min(100% - 32px, var(--max-width));
    padding-left: 16px;
    padding-right: 16px;
  }
  .section,
  .section-ma {
    padding-top: var(--section-pad-mobile);
    padding-bottom: var(--section-pad-mobile);
  }
  .hero.section-ma {
    padding-top: 80px;
    padding-bottom: 100px;
  }
  .cta.section-ma {
    padding-top: 40px;
    padding-bottom: 40px;
  }
  .cta-slogan {
    font-size: clamp(22px, 6vw, 28px);
  }
  .cta-inner {
    gap: 14px;
  }
  .cta-inner > p {
    font-size: 15px;
  }
  .cta-form input {
    min-width: 100%;
  }
  .hero-slogan {
    font-size: clamp(36px, 10vw, 48px);
  }
  .nav-toggle {
    display: flex;
  }
  .header-inner {
    padding: 12px 0;
  }
  .nav-wrap {
    position: fixed;
    top: 56px;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 16px;
    background: var(--bg);
    border-bottom: 1px solid var(--subtle);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
    max-height: 0;
    overflow: hidden;
    opacity: 0;
    visibility: hidden;
    transition: max-height 0.3s ease, opacity 0.2s ease, visibility 0.2s ease;
    z-index: 19;
  }
  .site-header.is-open .nav-wrap {
    max-height: 80vh;
    opacity: 1;
    visibility: visible;
  }
  .nav-wrap .nav-links {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
  }
  .nav-wrap .nav-links a {
    padding: 14px 16px;
    font-size: 16px;
    color: var(--text);
    border-radius: var(--radius-sm);
  }
  .nav-wrap .nav-links a:hover {
    background: var(--subtle);
  }
  .nav-wrap .header-cta {
    margin-top: 12px;
    justify-content: center;
  }
  .stats-grid,
  .impact-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }
  .problem {
    padding-top: 48px;
    padding-bottom: 48px;
  }
  .problem-intro {
    margin-bottom: 32px;
  }
  .problem .stats-grid {
    gap: 12px;
  }
  .problem .stat-card {
    padding: 18px 16px;
  }
  .steps {
    grid-template-columns: 1fr;
    gap: 16px;
    max-width: 360px;
    margin-left: auto;
    margin-right: auto;
  }
  .how-it-works {
    padding-top: 48px;
    padding-bottom: 48px;
  }
  .how-intro {
    margin-bottom: 32px;
  }
  .step-card {
    padding: 22px 18px;
  }
  .step-number {
    font-size: 26px;
    margin-bottom: 8px;
  }
  .step-card h3 {
    font-size: 17px;
  }
  .step-desc,
  .step-card p {
    font-size: 14px;
  }
  .features-grid,
  .features-grid.four-col {
    grid-template-columns: 1fr;
    gap: 24px;
  }
  .solution .feature-row {
    grid-template-columns: 1fr;
    gap: 20px;
    max-width: 360px;
    margin-left: auto;
    margin-right: auto;
  }
  .solution .feature-card {
    padding: 24px 20px;
  }
  .feature-icon {
    width: 48px;
    height: 48px;
    margin-bottom: 16px;
  }
  .feature-icon svg {
    width: 28px;
    height: 28px;
  }
  .pricing-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }
  .flow-diagram {
    flex-direction: column;
    align-items: flex-start;
  }
  .solution .flow-diagram {
    align-items: center;
  }
  .flow-arrow {
    width: 2px;
    height: 24px;
    margin: 4px 0;
  }
  .flow-arrow::after {
    display: none;
  }
  .flow-node {
    padding: 14px 20px;
    font-size: 14px;
  }
  .sdg-badges {
    gap: 12px;
    margin-top: 20px;
  }
  .sdg {
    padding: 10px 14px;
    font-size: 13px;
    gap: 8px;
  }
  .sdg-icon {
    width: 28px;
    height: 28px;
  }
  .sdg-icon svg {
    width: 18px;
    height: 18px;
  }
  .footer-inner {
    padding-top: 40px;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 28px;
    text-align: center;
  }
  .footer-brand {
    max-width: none;
  }
  .footer-logo {
    justify-content: center;
  }
  .footer-tagline {
    text-align: center;
    font-size: 14px;
  }
  .footer-col {
    text-align: center;
  }
  .footer-bottom {
    margin-top: 32px;
    padding: 16px 0 20px;
  }
}

@media (min-width: 768px) and (max-width: 1439px) {
  .container {
    width: min(100% - 80px, var(--max-width));
  }
  .header-inner {
    padding: 12px 16px;
  }
  .nav-wrap .nav-links {
    gap: 12px;
  }
  .nav-links a {
    font-size: 13px;
    white-space: nowrap;
  }
  .header-cta {
    padding: 8px 14px;
    font-size: 13px;
  }
  .section-ma {
    padding-top: 120px;
    padding-bottom: 120px;
  }
  .steps {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
    max-width: 640px;
  }
  .steps .step-card:last-child {
    grid-column: 1 / -1;
    max-width: 320px;
    margin: 0 auto;
  }
  .features-grid.four-col {
    grid-template-columns: repeat(2, 1fr);
  }
  .pricing-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    max-width: 960px;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr 1fr;
    gap: 28px 20px;
  }
  .footer-inner {
    padding-top: 44px;
  }
}

@media (min-width: 1440px) {
  .container {
    width: min(100% - 160px, var(--max-width));
  }
  .section-ma {
    padding-top: var(--section-pad-ma);
    padding-bottom: var(--section-pad-ma);
  }
}

@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}