:root {
  --portfolio-bg: #f4f7fb;
  --portfolio-ink: #172033;
  --portfolio-muted: #526176;
  --portfolio-line: #d8e2ee;
  --portfolio-card: #ffffff;
  --portfolio-soft: #f7faff;
  --portfolio-blue: #2563eb;
  --portfolio-indigo: #4f46e5;
  --portfolio-teal: #0f766e;
}

html,
body {
  color: var(--portfolio-ink);
  font-family: -apple-system, BlinkMacSystemFont, "Apple SD Gothic Neo", "Malgun Gothic", sans-serif;
  font-size: 15px;
  line-height: 1.65;
  letter-spacing: -0.01em;
  word-break: keep-all;
  overflow-wrap: break-word;
}

body {
  background: var(--portfolio-bg);
}

.wrap {
  max-width: 900px;
}

header.hero {
  border-radius: 20px;
  padding: 34px 32px;
}

header.hero h1 {
  margin: 0 0 10px;
  font-size: clamp(25px, 4vw, 30px);
  font-weight: 850;
  line-height: 1.26;
  letter-spacing: -0.035em;
}

header.hero p {
  margin: 0;
  font-size: 15px;
  line-height: 1.62;
}

.facts {
  gap: 20px;
  margin-top: 20px;
  font-size: 13px;
  line-height: 1.45;
}

.facts b {
  margin-bottom: 3px;
  font-size: 12px;
  font-weight: 700;
}

.stack {
  gap: 7px;
  margin-bottom: 24px;
}

.stack span {
  padding: 4px 10px;
  font-size: 12px;
  font-weight: 700;
  line-height: 1.45;
}

section {
  margin: 14px 0;
  padding: 22px 24px;
  border: 1px solid var(--portfolio-line);
  border-radius: 16px;
  background: var(--portfolio-card);
}

section h2 {
  gap: 9px;
  margin: 0 0 12px;
  color: var(--portfolio-ink);
  font-size: 18px;
  font-weight: 800;
  line-height: 1.35;
  letter-spacing: -0.025em;
}

section h2 .n {
  width: 26px;
  height: 26px;
  border-radius: 8px;
  font-size: 13px;
  font-weight: 800;
}

p,
li {
  font-size: 14.5px;
  line-height: 1.68;
}

p {
  margin: 8px 0;
}

ul {
  margin: 8px 0;
  padding-left: 20px;
}

li {
  margin: 5px 0;
}

b,
strong {
  font-size: inherit;
  line-height: inherit;
}

.flow {
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: minmax(0, auto);
  gap: 6px;
  align-items: stretch;
  margin: 14px 0;
}

.flow .b {
  min-width: 0;
  padding: 10px 9px;
  border: 1px solid var(--portfolio-line);
  border-radius: 10px;
  background: var(--portfolio-soft);
  font-size: 12.5px;
  line-height: 1.4;
}

.flow .b b {
  margin-bottom: 2px;
  font-size: 12.5px;
  font-weight: 800;
}

.flow .ar {
  padding: 0 3px;
  font-size: 13px;
}

.impact {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
}

.impact div {
  min-width: 0;
  padding: 13px;
  border: 1px solid #dbe7ff;
  border-radius: 12px;
  background: #f6f9ff;
  font-size: 13px;
  line-height: 1.5;
}

.impact b {
  display: block;
  margin-bottom: 4px;
  color: var(--portfolio-blue);
  font-size: 13px;
  font-weight: 800;
}

.impact span {
  display: block;
  color: var(--portfolio-ink);
  font-size: 13px;
  line-height: 1.5;
}

.architecture {
  padding: 20px 22px;
}

.arch-diagram {
  margin: 14px 0 8px;
}

.arch-diagram img,
.arch-diagram svg {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid #dce6f2;
  border-radius: 14px;
  background: #fbfdff;
}

.arch-diagram figcaption {
  margin-top: 7px;
  color: var(--portfolio-muted);
  font-size: 12px;
  line-height: 1.45;
  text-align: center;
}

footer {
  font-size: 12px;
}

@media (max-width: 640px) {
  .wrap {
    padding-inline: 14px;
  }

  header.hero {
    padding: 26px 22px;
  }

  header.hero p {
    font-size: 14px;
  }

  .facts {
    display: grid;
    grid-template-columns: 1fr;
    gap: 10px;
  }

  section {
    padding: 18px 17px;
  }

  p,
  li {
    font-size: 14px;
  }

  .flow,
  .impact {
    display: grid;
    grid-auto-flow: row;
    grid-template-columns: 1fr;
    gap: 8px;
  }

  .flow .b,
  .impact div {
    min-width: 0;
  }

  .flow .ar {
    min-height: 18px;
    padding: 0;
    justify-self: center;
    transform: rotate(90deg);
  }

  .arch-diagram {
    margin-inline: -6px;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }

  .arch-diagram img,
  .arch-diagram svg {
    min-width: 660px;
  }

  .arch-diagram figcaption::after {
    content: " · 다이어그램은 옆으로 밀어 볼 수 있어요";
    color: #98a1b3;
  }
}