.sd {
  overflow: hidden;
  background: var(--paper);
}

.sd__hero {
  padding: clamp(8rem, 13vw, 11rem) var(--pad-x) clamp(4rem, 8vw, 7rem);
}

.sd__hero-inner,
.sd__content-inner,
.sd__process-inner,
.sd__work-inner {
  width: min(1120px, 100%);
  margin-inline: auto;
}

.sd__hero-inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 0.82fr);
  align-items: center;
  gap: clamp(2.5rem, 6vw, 6rem);
}

.sd__eyebrow,
.sd__section-label {
  display: block;
  margin-bottom: 1rem;
  color: var(--muted);
  font-size: var(--t-eyebrow);
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.sd__title {
  max-width: 760px;
  margin-bottom: 1.5rem;
  font-family: var(--sans);
  font-size: clamp(2.2rem, 1.5rem + 3vw, 4.6rem);
  font-weight: 600;
  letter-spacing: -0.035em;
  line-height: 1.02;
}

.sd__intro {
  max-width: 650px;
  margin-bottom: 2rem;
  color: var(--muted);
  font-size: clamp(0.95rem, 0.88rem + 0.3vw, 1.08rem);
  line-height: 1.7;
}

.sd__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
}

.sd__button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.78rem 1.8rem;
  border: 1px solid var(--ink);
  border-radius: 999px;
  background: var(--ink);
  color: var(--on-dark);
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  transition: opacity 0.3s var(--ease);
}

.sd__button:hover {
  opacity: 0.82;
}

.sd__button--secondary {
  background: transparent;
  color: var(--ink);
}

.sd__hero-frame {
  padding: clamp(0.45rem, 0.8vw, 0.7rem);
  border: 1.5px dashed rgba(17, 16, 13, 0.28);
  border-radius: clamp(14px, 2vw, 24px);
}

.sd__hero-image {
  display: block;
  width: 100%;
  aspect-ratio: 4 / 5;
  border-radius: clamp(10px, 1.5vw, 18px);
  object-fit: cover;
}

.sd__content {
  padding: clamp(4rem, 8vw, 7rem) var(--pad-x);
  background: var(--blue);
}

.sd__content-grid {
  display: grid;
  grid-template-columns: minmax(220px, 0.55fr) minmax(0, 1.25fr);
  gap: clamp(3rem, 8vw, 8rem);
}

.sd__meta {
  display: grid;
  align-content: start;
  gap: 1.5rem;
}

.sd__meta-label {
  margin-bottom: 0.3rem;
  color: var(--muted);
  font-size: 0.68rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.sd__meta-value {
  font-size: 0.94rem;
  line-height: 1.55;
}

.sd__heading {
  margin-bottom: 1.2rem;
  font-family: var(--serif);
  font-size: clamp(1.8rem, 1.3rem + 2vw, 3rem);
  font-style: italic;
  font-weight: 400;
  line-height: 1.1;
}

.sd__body {
  color: var(--muted);
  font-size: clamp(0.92rem, 0.86rem + 0.25vw, 1.04rem);
  line-height: 1.75;
}

.sd__includes {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.75rem 1.5rem;
  margin-top: 2rem;
  list-style: none;
}

.sd__includes li {
  position: relative;
  padding: 0.9rem 0 0.9rem 1.35rem;
  border-bottom: 1px solid rgba(17, 16, 13, 0.1);
  font-size: 0.88rem;
  line-height: 1.5;
}

.sd__includes li::before {
  position: absolute;
  top: 1rem;
  left: 0;
  content: "✦";
  font-size: 0.65rem;
}

.sd__process {
  padding: clamp(4.5rem, 9vw, 7rem) var(--pad-x);
  background: #111110;
  color: var(--on-dark);
}

.sd__process .sd__section-label {
  color: rgba(248, 246, 240, 0.48);
  text-align: center;
}

.sd__process-title {
  margin: 0 auto clamp(2.5rem, 5vw, 4rem);
  max-width: 720px;
  color: var(--on-dark);
  font-family: var(--sans);
  font-size: clamp(1.7rem, 1.25rem + 2vw, 3rem);
  font-weight: 400;
  line-height: 1.18;
  text-align: center;
}

.sd__steps {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: clamp(0.8rem, 1.5vw, 1.2rem);
}

.sd__step {
  min-height: 210px;
  padding: clamp(1.5rem, 3vw, 2.2rem);
  border: 1.5px dashed rgba(17, 16, 13, 0.14);
  border-radius: 16px;
  background: var(--blue);
  color: var(--ink);
}

.sd__step:nth-child(2) {
  background: var(--blue-2);
}

.sd__step:nth-child(3) {
  background: #D9EDF8;
}

.sd__step:nth-child(4) {
  background: #F5EDCF;
}

.sd__step-number {
  display: block;
  margin-bottom: 1.2rem;
  color: var(--muted);
  font-size: 0.68rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.sd__step-title {
  margin-bottom: 0.7rem;
  font-size: 1.05rem;
  font-weight: 500;
}

.sd__step-body {
  color: var(--muted);
  font-size: 0.84rem;
  line-height: 1.6;
}

.sd__work {
  padding: clamp(4.5rem, 9vw, 7rem) var(--pad-x);
}

.sd__work-header {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 2rem;
  margin-bottom: clamp(2rem, 4vw, 3rem);
}

.sd__work-title {
  font-family: var(--sans);
  font-size: clamp(1.7rem, 1.3rem + 1.5vw, 2.7rem);
  font-weight: 500;
  letter-spacing: -0.02em;
}

.sd__work-link {
  flex-shrink: 0;
  color: var(--muted);
  font-size: 0.78rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.sd__projects {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(1.2rem, 2.5vw, 2rem);
}

.sd__project-frame {
  margin-bottom: 0.9rem;
  padding: 0.45rem;
  border: 1.5px dashed rgba(17, 16, 13, 0.22);
  border-radius: 12px;
}

.sd__project-image {
  display: block;
  width: 100%;
  aspect-ratio: 4 / 3;
  border-radius: 8px;
  object-fit: cover;
}

.sd__project-name {
  font-size: 0.95rem;
  font-weight: 500;
}

@media (max-width: 900px) {
  .sd__hero-inner,
  .sd__content-grid {
    grid-template-columns: 1fr;
  }

  .sd__hero-frame {
    max-width: 600px;
  }

  .sd__steps {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 640px) {
  .sd__hero {
    padding-top: 7rem;
  }

  .sd__includes,
  .sd__steps,
  .sd__projects {
    grid-template-columns: 1fr;
  }

  .sd__work-header {
    align-items: start;
    flex-direction: column;
  }
}

@media (hover: none) {
  .sd__button:hover {
    opacity: 1;
  }
}