.section {
  padding-block: var(--space-6);
}

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

.section--surface {
  background: var(--c-surface);
}

.eyebrow {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--c-accent);
  margin-bottom: var(--space-2);
}

.section--alt .eyebrow {
  color: var(--c-muted-on-alt);
}

.section-head {
  max-width: 640px;
  margin-bottom: var(--space-5);
}

.section-head h2 {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(1.8rem, 1.4rem + 1.6vw, 2.6rem);
  line-height: 1.15;
}

.section-head p {
  margin-top: var(--space-2);
  color: var(--c-muted);
  font-size: 1.05rem;
}

.section--alt .section-head p {
  color: var(--c-muted-on-alt);
}

.img-box {
  background: var(--c-line);
  border: 1px solid var(--c-fg);
  border-radius: var(--radius-md);
  aspect-ratio: 4 / 3;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--c-muted);
  font-size: 0.8rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  text-align: center;
  padding: var(--space-2);
}

.section--alt .img-box {
  background: var(--c-line-on-alt);
  border-color: var(--c-line-on-alt);
  color: var(--c-muted-on-alt);
}

.hero {
  border-bottom: 1px solid var(--c-line);
}

.hero .container {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-5);
  align-items: center;
  padding-block: var(--space-6);
}

@media (min-width: 1025px) {
  .hero .container {
    grid-template-columns: 1fr 1fr;
  }
}

.hero__copy h1 {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(2.2rem, 1.6rem + 3vw, 3.4rem);
  line-height: 1.08;
}

.hero__copy p {
  margin-top: var(--space-3);
  font-size: 1.15rem;
  color: var(--c-muted);
  max-width: 480px;
}

.hero__actions {
  margin-top: var(--space-4);
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.hero__image .img-box {
  aspect-ratio: 1 / 1;
}

@media (min-width: 641px) {
  .hero__image .img-box {
    aspect-ratio: 4 / 3;
  }
}

.intro .container {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
}

@media (min-width: 641px) {
  .intro .container {
    grid-template-columns: 2fr 1fr;
    align-items: start;
  }
}

.intro__lead {
  font-family: var(--font-display);
  font-size: clamp(1.3rem, 1.1rem + 0.8vw, 1.7rem);
  line-height: 1.35;
}

.intro__meta {
  color: var(--c-muted);
  border-left: 2px solid var(--c-accent);
  padding-left: var(--space-3);
}

.grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-3);
}

@media (min-width: 641px) {
  .grid--2 {
    grid-template-columns: repeat(2, 1fr);
  }
  .grid--3 {
    grid-template-columns: repeat(3, 1fr);
  }
  .grid--4 {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1025px) {
  .grid--4 {
    grid-template-columns: repeat(4, 1fr);
  }
}

.card {
  border: 1px solid var(--c-line);
  border-radius: var(--radius-md);
  padding: var(--space-3);
  background: var(--c-surface);
}

.section--alt .card {
  border-color: var(--c-line-on-alt);
  background: transparent;
}

.card__icon {
  width: 40px;
  height: 40px;
  margin-bottom: var(--space-3);
}

.card h3 {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.15rem;
}

.card p {
  margin-top: var(--space-1);
  color: var(--c-muted);
  font-size: 0.95rem;
}

.section--alt .card p {
  color: var(--c-muted-on-alt);
}

.capabilities-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  border-top: 1px solid var(--c-line);
}

.capabilities-list li {
  display: grid;
  grid-template-columns: 3rem 1fr;
  gap: var(--space-3);
  padding-block: var(--space-3);
  border-bottom: 1px solid var(--c-line);
}

.capabilities-list .num {
  font-family: var(--font-display);
  color: var(--c-accent);
  font-size: 1.1rem;
  font-weight: 600;
}

.capabilities-list h3 {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 600;
}

.capabilities-list p {
  margin-top: var(--space-1);
  color: var(--c-muted);
  font-size: 0.95rem;
}

.steps {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-3);
}

@media (min-width: 641px) {
  .steps {
    grid-template-columns: repeat(4, 1fr);
  }
}

.step {
  padding-top: var(--space-3);
  border-top: 2px solid var(--c-line-on-alt);
}

.step .num {
  font-family: var(--font-display);
  font-size: 1.6rem;
  color: var(--c-accent);
}

.step h3 {
  font-family: var(--font-display);
  font-size: 1.05rem;
  margin-top: var(--space-1);
}

.step p {
  color: var(--c-muted-on-alt);
  font-size: 0.92rem;
  margin-top: var(--space-1);
}

.product-card {
  border: 1px solid var(--c-line);
  border-radius: var(--radius-md);
  background: var(--c-surface);
  display: flex;
  flex-direction: column;
}

.product-card .img-box {
  border-radius: var(--radius-md) var(--radius-md) 0 0;
  border-bottom: 1px solid var(--c-line);
  border-left: none;
  border-right: none;
  border-top: none;
  aspect-ratio: 4 / 3;
}

.product-card__body {
  padding: var(--space-3);
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  flex: 1;
}

.product-card h3 {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.1rem;
}

.product-card p {
  color: var(--c-muted);
  font-size: 0.92rem;
}

.product-card__price {
  font-weight: 700;
  font-size: 1.15rem;
  margin-top: var(--space-1);
}

.product-card__price span {
  font-weight: 400;
  color: var(--c-muted);
  font-size: 0.8rem;
}

.product-card .btn {
  margin-top: var(--space-2);
  width: 100%;
}

.benefit-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
  align-items: center;
  padding-block: var(--space-4);
}

.benefit-row:not(:last-child) {
  border-bottom: 1px solid var(--c-line);
}

@media (min-width: 1025px) {
  .benefit-row {
    grid-template-columns: 1fr 1fr;
  }
  .benefit-row--reverse .benefit-row__copy {
    order: 2;
  }
}

.benefit-row__copy h3 {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(1.3rem, 1.1rem + 0.8vw, 1.7rem);
}

.benefit-row__copy p {
  margin-top: var(--space-2);
  color: var(--c-muted);
}

.benefit-row__list {
  margin-top: var(--space-3);
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  color: var(--c-fg);
  font-size: 0.95rem;
}

.benefit-row__list li {
  padding-left: var(--space-3);
  position: relative;
}

.benefit-row__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 8px;
  height: 2px;
  background: var(--c-accent);
}

.metrics {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-4);
  border-top: 1px solid var(--c-line-on-alt);
}

@media (min-width: 641px) {
  .metrics {
    grid-template-columns: repeat(4, 1fr);
  }
}

.metric {
  padding-top: var(--space-4);
}

.metric__num {
  font-family: var(--font-display);
  font-size: clamp(2rem, 1.6rem + 1.6vw, 2.8rem);
  font-weight: 600;
  color: var(--c-accent);
}

.metric__label {
  color: var(--c-muted-on-alt);
  font-size: 0.9rem;
  margin-top: var(--space-1);
}

.testimonial-card {
  border: 1px solid var(--c-line);
  border-radius: var(--radius-md);
  padding: var(--space-4);
  background: var(--c-surface);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.testimonial-card blockquote {
  font-family: var(--font-display);
  font-size: 1.1rem;
  line-height: 1.4;
}

.testimonial-card cite {
  font-style: normal;
  color: var(--c-muted);
  font-size: 0.88rem;
  display: block;
}

.testimonial-card cite strong {
  color: var(--c-fg);
  display: block;
}

.faq-list {
  border-top: 1px solid var(--c-line);
  max-width: 760px;
}

.faq-item {
  border-bottom: 1px solid var(--c-line);
  padding-block: var(--space-3);
}

.faq-item summary {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.05rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  list-style: none;
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item summary::after {
  content: "+";
  color: var(--c-accent);
  font-size: 1.4rem;
  font-family: var(--font-body);
  flex-shrink: 0;
  margin-left: var(--space-2);
}

.faq-item[open] summary::after {
  content: "\2212";
}

.faq-item p {
  margin-top: var(--space-2);
  color: var(--c-muted);
  max-width: 640px;
}

.partners-strip {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-3);
  border-top: 1px solid var(--c-line);
  border-bottom: 1px solid var(--c-line);
}

@media (min-width: 641px) {
  .partners-strip {
    grid-template-columns: repeat(4, 1fr);
  }
}

.partner-mark {
  padding: var(--space-3);
  text-align: center;
  color: var(--c-muted);
  font-family: var(--font-display);
  font-weight: 600;
  letter-spacing: 0.02em;
  border-right: 1px solid var(--c-line);
  border-bottom: 1px solid var(--c-line);
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
}

@media (min-width: 1025px) {
  .contact-grid {
    grid-template-columns: 1fr 1fr;
  }
}

.contact-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  margin-top: var(--space-3);
}

.contact-list dt {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--c-muted-on-alt);
}

.contact-list dd {
  margin: 0;
  margin-top: 0.2rem;
  font-size: 1.05rem;
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.contact-form label {
  font-size: 0.85rem;
  color: var(--c-muted-on-alt);
  margin-bottom: 0.3rem;
  display: block;
}

.contact-form input,
.contact-form textarea {
  width: 100%;
  padding: 0.75rem var(--space-2);
  background: var(--c-bg-alt);
  border: 1px solid var(--c-line-on-alt);
  border-radius: var(--radius-sm);
  color: var(--c-fg-on-alt);
  font-family: var(--font-body);
  font-size: 0.95rem;
}

.contact-form input:focus,
.contact-form textarea:focus {
  outline: 2px solid var(--c-accent);
  outline-offset: 2px;
}

.contact-form .btn {
  margin-top: var(--space-2);
  align-self: flex-start;
}

.section-head--centered {
  max-width: 720px;
  margin-inline: auto;
  text-align: center;
}

.section-head--centered p {
  max-width: 620px;
  margin-inline: auto;
}

.intro__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
  align-items: center;
}

@media (min-width: 641px) {
  .intro__grid {
    grid-template-columns: 1.4fr 1fr;
  }
}

.intro__meta {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.intro__meta strong {
  font-family: var(--font-display);
  font-size: 1.05rem;
}

.intro__meta span {
  color: var(--c-muted);
}

.water-profile__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-5);
  align-items: center;
}

@media (min-width: 1025px) {
  .water-profile__grid {
    grid-template-columns: 1fr 0.85fr;
  }
}

.water-profile__copy h2 {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 1.4rem + 1.6vw, 2.6rem);
  line-height: 1.15;
}

.water-profile__copy > p {
  color: var(--c-muted);
  margin-top: var(--space-2);
  max-width: 600px;
}

.profile-points {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  margin-top: var(--space-4);
}

.profile-point {
  display: flex;
  align-items: flex-start;
  gap: var(--space-2);
}

.profile-point__mark {
  color: var(--c-accent);
  font-family: var(--font-display);
  font-size: 1.25rem;
  min-width: 2rem;
}

.profile-point h3 {
  font-family: var(--font-display);
  font-size: 1.05rem;
}

.profile-point p {
  color: var(--c-muted);
  font-size: 0.95rem;
  margin-top: var(--space-1);
}

.water-profile__visual {
  background: var(--c-bg-alt);
  border-radius: var(--radius-md);
  padding: var(--space-5);
}

.profile-figure {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: var(--space-2);
  align-items: center;
  color: var(--c-fg-on-alt);
}

.profile-figure span {
  color: var(--c-muted-on-alt);
  font-size: 0.85rem;
}

.profile-figure strong {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 600;
}

.profile-figure i {
  display: block;
  grid-column: 1 / -1;
  height: 0.5rem;
  background: var(--c-accent);
  border-radius: var(--radius-sm);
  position: relative;
}

.profile-figure i::after {
  content: "";
  position: absolute;
  left: 100%;
  right: -100%;
  height: 100%;
  background: var(--c-line-on-alt);
  border-radius: var(--radius-sm);
}

.product-card__features {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  margin-top: var(--space-2);
  color: var(--c-fg);
  font-size: 0.85rem;
}

.product-card__features li {
  padding-left: var(--space-2);
  position: relative;
}

.product-card__features li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.65em;
  width: 5px;
  height: 5px;
  background: var(--c-accent);
  border-radius: 50%;
}

.timeline {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-3);
  max-width: 960px;
  margin-inline: auto;
}

@media (min-width: 641px) {
  .timeline {
    grid-template-columns: repeat(4, 1fr);
  }
}

.timeline__item {
  border-top: 2px solid var(--c-line);
  padding-top: var(--space-3);
}

.timeline__marker {
  display: block;
  color: var(--c-accent);
  font-family: var(--font-display);
  font-size: 1.5rem;
  margin-bottom: var(--space-2);
}

.timeline__item h3 {
  font-family: var(--font-display);
  font-size: 1.1rem;
}

.timeline__item p {
  margin-top: var(--space-1);
  color: var(--c-muted);
  font-size: 0.92rem;
}

@media (max-width: 640px) {
  .water-profile__visual {
    padding: var(--space-3);
  }
}

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

a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible, select:focus-visible, [tabindex]:focus-visible { outline: 2px solid currentColor; outline-offset: 2px; }