/* ===== Hero ===== */
.hero {
  background: linear-gradient(135deg, var(--navy-blue) 0%, var(--navy-light) 100%);
  color: var(--white);
  padding: 6rem 2rem;
  text-align: center;
}

.hero__eyebrow {
  font-size: var(--fs-sm);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--profit-green);
  font-weight: var(--fw-semibold);
  margin-bottom: 1.25rem;
}

.hero h1 {
  max-width: 800px;
  margin: 0 auto 1.5rem;
}

.hero h1 .text-green {
  color: var(--profit-green);
}

.hero__subtitle {
  font-size: var(--fs-xl);
  color: rgba(255, 255, 255, 0.8);
  max-width: 680px;
  margin: 0 auto 2.5rem;
  line-height: var(--lh-base);
}

.hero__mission {
  font-size: var(--fs-base);
  color: var(--profit-green);
  font-weight: 600;
  letter-spacing: 0.5px;
  margin: 0 auto 2.5rem;
  text-transform: uppercase;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1.5rem;
}

@media (max-width: 768px) {
  .hero {
    padding: 7rem 2rem 4rem;
  }

  .hero__subtitle {
    font-size: var(--fs-md);
  }
}

/* ===== Stats ===== */
.stats {
  background: var(--light-gray);
  padding: 4rem 0;
}

.stats-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  text-align: center;
}

.stat__value {
  font-size: var(--fs-4xl);
  font-weight: var(--fw-bold);
  color: var(--profit-green);
  line-height: 1;
  margin-bottom: 0.5rem;
}

.stat__label {
  font-size: var(--fs-sm);
  color: var(--medium-gray);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

@media (min-width: 640px) {
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .stats-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

/* ===== Features ===== */
.features {
  padding: 5rem 0;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
}

.feature-card {
  background: var(--light-gray);
  border-radius: var(--radius-md);
  padding: 2.5rem 2rem;
  box-shadow: var(--shadow-card);
  transition: all var(--transition);
}

.feature-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-hover);
}

.feature-card__icon {
  font-size: 3rem;
  margin-bottom: 1.5rem;
}

.feature-card__title {
  font-size: var(--fs-lg);
  font-weight: var(--fw-bold);
  margin-bottom: 0.75rem;
}

.feature-card__text {
  color: var(--medium-gray);
  line-height: var(--lh-base);
  font-size: var(--fs-sm);
}

/* ===== ROI Breakdown ===== */
.roi {
  background: var(--navy-blue);
  color: var(--white);
  padding: 5rem 0;
}

.roi-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 4rem;
  align-items: center;
}

.roi__content h2 {
  margin-bottom: 1.5rem;
}

.roi__list {
  margin-top: 2rem;
}

.roi__list li {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  padding: 0.5rem 0;
  font-size: var(--fs-md);
  line-height: var(--lh-base);
}

.roi__list li::before {
  content: '✓';
  color: var(--profit-green);
  font-weight: var(--fw-bold);
  flex-shrink: 0;
  margin-top: 2px;
}

.roi__total {
  margin-top: 2rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border-dark);
}

.roi__total-value {
  font-size: var(--fs-3xl);
  font-weight: var(--fw-bold);
  color: var(--profit-green);
}

.roi__total-label {
  font-size: var(--fs-sm);
  color: rgba(255, 255, 255, 0.6);
  margin-top: 0.25rem;
}

/* ROI Chart */
.roi__chart {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.roi-bar {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.roi-bar__label {
  font-size: var(--fs-sm);
  color: rgba(255, 255, 255, 0.8);
  display: flex;
  justify-content: space-between;
}

.roi-bar__track {
  height: 32px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.roi-bar__fill {
  height: 100%;
  background: linear-gradient(90deg, var(--profit-green), var(--profit-green-hover));
  border-radius: var(--radius-sm);
  transition: width 1s ease;
}

@media (min-width: 768px) {
  .roi-grid {
    grid-template-columns: 1fr 1fr;
  }
}

/* ===== How It Works ===== */
.how-it-works {
  background: var(--light-gray);
  padding: 5rem 0;
}

.steps-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 3rem;
  max-width: 900px;
  margin: 0 auto;
}

.step {
  display: flex;
  gap: 1.5rem;
  align-items: flex-start;
}

.step__badge {
  flex-shrink: 0;
  width: 80px;
  height: 80px;
  background: var(--profit-green);
  color: var(--white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--fs-3xl);
  font-weight: var(--fw-bold);
}

.step__content h3 {
  margin-bottom: 0.5rem;
}

.step__content p {
  color: var(--medium-gray);
  line-height: var(--lh-base);
}

@media (min-width: 768px) {
  .steps-grid {
    grid-template-columns: repeat(3, 1fr);
    text-align: center;
  }

  .step {
    flex-direction: column;
    align-items: center;
  }
}

/* ===== Whitepaper ===== */
.whitepaper {
  background: var(--light-gray);
  padding: 5rem 0;
}

.whitepaper-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 3rem;
  align-items: start;
}

.whitepaper__content .badge {
  margin-bottom: 1rem;
}

.whitepaper__content h2 {
  margin-bottom: 1rem;
}

.whitepaper__content p {
  color: var(--medium-gray);
  line-height: var(--lh-base);
  margin-bottom: 1.5rem;
}

.whitepaper__highlights {
  margin-bottom: 2rem;
}

.whitepaper__highlights li {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  padding: 0.4rem 0;
  color: var(--navy-blue);
  font-size: var(--fs-sm);
}

.whitepaper__highlights li::before {
  content: '\2713';
  color: var(--profit-green);
  font-weight: var(--fw-bold);
  flex-shrink: 0;
}

.whitepaper__meta {
  background: var(--white);
  border-radius: var(--radius-md);
  padding: 2rem;
  box-shadow: var(--shadow-card);
}

.whitepaper__meta-item {
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--border-light);
}

.whitepaper__meta-item:last-child {
  border-bottom: none;
}

.whitepaper__meta-label {
  font-size: var(--fs-xs);
  font-weight: var(--fw-semibold);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--medium-gray);
  margin-bottom: 0.25rem;
}

.whitepaper__meta-value {
  font-size: var(--fs-sm);
  font-weight: var(--fw-medium);
}

@media (min-width: 768px) {
  .whitepaper-grid {
    grid-template-columns: 1.5fr 1fr;
  }
}

/* ===== CTA Banner ===== */
.cta-banner {
  background: linear-gradient(135deg, var(--navy-blue) 0%, var(--navy-light) 100%);
  color: var(--white);
  padding: 5rem 0;
  text-align: center;
}

.cta-banner h2 {
  margin-bottom: 1rem;
}

.cta-banner p {
  color: rgba(255, 255, 255, 0.8);
  margin-bottom: 2rem;
  font-size: var(--fs-lg);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.cta-banner__sub {
  margin-top: 1.5rem;
  font-size: var(--fs-sm);
  color: rgba(255, 255, 255, 0.6);
}

/* ===== Quality Impact Chain ===== */
.impact-chain {
  background: var(--light-gray);
  padding: 5rem 0;
}

.chain-visual {
  display: flex;
  align-items: stretch;
  justify-content: center;
  gap: 0;
  margin: 3rem 0 2.5rem;
  position: relative;
}

.chain-step {
  background: var(--white);
  border-radius: var(--radius-md);
  padding: 1.75rem 1.5rem 1.5rem;
  text-align: center;
  min-width: 180px;
  flex: 1;
  max-width: 220px;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
  position: relative;
  border-top: 3px solid var(--border-light);
  transition: all var(--transition);
}

.chain-step:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
}

.chain-step--impact {
  border-top-color: var(--profit-green);
  background: linear-gradient(180deg, rgba(0, 200, 83, 0.06) 0%, var(--white) 100%);
  box-shadow: 0 2px 12px rgba(0, 200, 83, 0.12);
}

.chain-step--impact:hover {
  box-shadow: 0 8px 24px rgba(0, 200, 83, 0.2);
}

.chain-step__platform {
  display: inline-block;
  font-size: 0.65rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--white);
  font-weight: var(--fw-bold);
  background: var(--navy-blue);
  padding: 0.2rem 0.6rem;
  border-radius: var(--radius-full);
  margin-bottom: 0.75rem;
}

.chain-step--impact .chain-step__platform {
  background: var(--profit-green);
}

.chain-step__event {
  font-weight: var(--fw-bold);
  font-size: var(--fs-base);
  margin-bottom: 0.5rem;
  color: var(--navy-blue);
}

.chain-step__bar {
  width: 100%;
  height: 4px;
  background: var(--border-light);
  border-radius: 2px;
  margin-bottom: 0.5rem;
  overflow: hidden;
}

.chain-step__bar-fill {
  height: 100%;
  background: var(--profit-green);
  border-radius: 2px;
}

.chain-step__confidence {
  font-size: var(--fs-xs);
  color: var(--medium-gray);
  margin-bottom: 0.75rem;
}

.chain-step__cost {
  font-size: var(--fs-xl);
  font-weight: var(--fw-bold);
  color: var(--profit-green);
}

.chain-step--impact .chain-step__cost {
  font-size: var(--fs-2xl);
}

.chain-arrow {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  width: 48px;
  color: var(--profit-green);
  font-size: var(--fs-xl);
  opacity: 0.6;
}

.chain-total {
  text-align: center;
  margin: 0 0 2rem;
  background: var(--white);
  max-width: 480px;
  margin-left: auto;
  margin-right: auto;
  padding: 2rem 2.5rem;
  border-radius: var(--radius-md);
  box-shadow: 0 4px 20px rgba(0, 200, 83, 0.12);
  border: 2px solid rgba(0, 200, 83, 0.2);
}

.chain-total__label {
  font-size: var(--fs-sm);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--medium-gray);
  font-weight: var(--fw-semibold);
}

.chain-total__formula {
  font-size: var(--fs-sm);
  color: var(--medium-gray);
  font-family: 'SF Mono', 'Fira Code', 'Consolas', monospace;
  margin: 0.5rem 0;
  background: var(--light-gray);
  display: inline-block;
  padding: 0.25rem 0.75rem;
  border-radius: var(--radius-sm);
}

.chain-total__value {
  font-size: var(--fs-4xl);
  font-weight: var(--fw-bold);
  color: var(--profit-green);
  margin-top: 0.5rem;
}

.chain-footnote {
  text-align: center;
  color: var(--medium-gray);
  font-size: var(--fs-sm);
  line-height: var(--lh-base);
  max-width: 600px;
  margin: 0 auto;
}

@media (max-width: 900px) {
  .chain-visual {
    flex-direction: column;
    align-items: center;
    gap: 0;
  }

  .chain-step {
    max-width: 100%;
    min-width: auto;
    width: 100%;
  }

  .chain-arrow {
    width: auto;
    height: 36px;
    transform: rotate(90deg);
  }
}

/* ===== What These Numbers Enable ===== */
.numbers-enable {
  background: linear-gradient(135deg, var(--navy-blue) 0%, var(--navy-light) 100%);
  color: var(--white);
  padding: 5rem 0;
}

.numbers-enable .section__title {
  color: var(--white);
}

.numbers-enable .section__subtitle {
  color: rgba(255, 255, 255, 0.7);
}

.enable-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  margin-top: 1rem;
}

.enable-card {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-md);
  padding: 2.25rem 2rem;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}

.enable-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--profit-green), transparent);
  opacity: 0;
  transition: opacity var(--transition);
}

.enable-card:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(0, 200, 83, 0.3);
  transform: translateY(-4px);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.3);
}

.enable-card:hover::before {
  opacity: 1;
}

.enable-card__icon {
  width: 52px;
  height: 52px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 1.25rem;
  background: rgba(0, 200, 83, 0.12);
  border-radius: var(--radius-md);
  border: 1px solid rgba(0, 200, 83, 0.2);
}

.enable-card h3 {
  font-size: var(--fs-lg);
  margin-bottom: 0.75rem;
  color: var(--white);
  font-weight: var(--fw-semibold);
}

.enable-card p {
  font-size: var(--fs-sm);
  color: rgba(255, 255, 255, 0.65);
  line-height: var(--lh-base);
}

@media (max-width: 1024px) {
  .enable-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 640px) {
  .enable-grid {
    grid-template-columns: 1fr;
  }
}