:root {
  --color-bg: #f5f3ee;
  --color-text: #1a1a1a;
  --color-sub: #5d4a3a;
  --color-border: #d9d4cb;
}

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

html {
  background: var(--color-bg);
  color: var(--color-text);
  font-family: "Noto Serif JP", "Yu Mincho", "游明朝", "Hiragino Mincho ProN", "ヒラギノ明朝 ProN", serif;
  font-size: 15.5px;
  line-height: 1.95;
  text-rendering: optimizeLegibility;
}

body {
  min-width: 320px;
  margin: 0;
  background: var(--color-bg);
  color: var(--color-text);
  font-weight: 400;
  letter-spacing: 0.04em;
}

a {
  color: inherit;
  text-decoration-color: var(--color-text);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.22em;
}

a:hover {
  text-decoration-line: none;
}

a:focus-visible {
  outline: 1px solid var(--color-sub);
  outline-offset: 0.28em;
}

h1,
h2,
h3,
p {
  margin: 0;
}

h1,
h2,
h3 {
  font-weight: 500;
  line-height: 1.6;
}

.container {
  width: 100%;
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 5vw;
}

.page-hero {
  min-height: 80vh;
  border-bottom: 1px solid var(--color-border);
}

.hero-inner {
  display: flex;
  min-height: 80vh;
  flex-direction: column;
  padding-top: 2.5rem;
  padding-bottom: 7rem;
}

.site-name {
  color: var(--color-sub);
  font-size: 0.85rem;
  letter-spacing: 0.06em;
}

.hero-copy {
  margin-top: clamp(8rem, 18vh, 16rem);
}

.hero-headline {
  max-width: 11em;
  font-size: clamp(2.8rem, 7vw, 5.5rem);
  letter-spacing: 0.05em;
}

.hero-sub {
  max-width: 34em;
  margin-top: 2.5rem;
  color: var(--color-sub);
  font-size: 1rem;
}

.section {
  border-bottom: 1px solid var(--color-border);
}

.section-work {
  padding-block: 8rem 10rem;
}

.section-place {
  padding-block: 7rem 14rem;
}

.section-company {
  padding-block: 6rem 8rem;
}

.section-renraku {
  padding-block: 10rem 9rem;
}

.section-grid {
  display: grid;
  gap: 4rem;
}

.section-heading {
  max-width: 23rem;
}

h2 {
  font-size: clamp(1.8rem, 3.5vw, 2.6rem);
  letter-spacing: 0.08em;
}

h3 {
  color: var(--color-sub);
  font-size: 1.25rem;
  letter-spacing: 0.06em;
}

.section-content {
  max-width: 720px;
}

.lead {
  font-size: 1.08rem;
}

.work-list {
  margin-top: 6rem;
}

.work-item {
  padding-top: 2.5rem;
  border-top: 1px solid var(--color-border);
}

.work-item + .work-item {
  margin-top: 4.5rem;
}

.work-item p {
  margin-top: 1.25rem;
}

.section-company-inner {
  max-width: 720px;
}

address {
  margin-top: 3rem;
  font-style: normal;
}

.phone-number {
  margin-top: 3rem;
  font-size: 2rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  line-height: 1.45;
}

.site-footer {
  padding-block: 2rem;
  color: var(--color-sub);
  font-size: 0.85rem;
  letter-spacing: 0.06em;
}

@media (min-width: 768px) {
  html {
    font-size: 16px;
  }

  .hero-inner {
    padding-top: 3rem;
    padding-bottom: 8rem;
  }

  .section-work {
    padding-block: 10rem 12rem;
  }

  .section-place {
    padding-block: 8rem 16rem;
  }

  .section-company {
    padding-block: 7rem 9rem;
  }

  .section-renraku {
    padding-block: 12rem 10rem;
  }

  .section-grid {
    grid-template-columns: minmax(0, 0.58fr) minmax(22rem, 0.42fr);
    gap: 5rem;
    align-items: start;
  }

  .section-grid-place {
    grid-template-columns: minmax(0, 0.46fr) minmax(24rem, 0.54fr);
  }

  .section-grid-renraku {
    grid-template-columns: minmax(0, 0.62fr) minmax(20rem, 0.38fr);
  }
}

@media (min-width: 1024px) {
  html {
    font-size: 17px;
  }

  .container {
    padding-right: 6vw;
    padding-left: 6vw;
  }

  .hero-inner {
    padding-top: 3.25rem;
  }

  .section-grid {
    gap: 7rem;
  }

  .work-list {
    margin-top: 7rem;
  }

  .work-item:nth-child(2) {
    margin-left: 3.5rem;
  }

  .work-item:nth-child(3) {
    margin-left: 1.25rem;
  }
}