:root {
  --bg: #fcfbf8;
  --surface: #ffffff;
  --surface-soft: #f2f0eb;
  --surface-muted: #f7f5f1;
  --text: #161616;
  --text-subtle: #55514a;
  --line: #d9d3ca;
  --accent: #b4864c;
  --shadow: 0 24px 60px rgba(29, 24, 15, 0.08);
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Noto Sans JP", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(212, 196, 162, 0.18), transparent 28%),
    linear-gradient(180deg, #fdfcf9 0%, #fbfaf7 100%);
  line-height: 1.8;
}

a {
  color: inherit;
  text-decoration: none;
}

img {
  max-width: 100%;
  display: block;
}

.container {
  width: min(1080px, calc(100% - 48px));
  margin: 0 auto;
}

.narrow {
  width: min(760px, 100%);
}

.section {
  padding: 88px 0;
}

.section-muted {
  background: rgba(255, 255, 255, 0.58);
}

.section-soft {
  background: linear-gradient(180deg, rgba(230, 226, 239, 0.42), rgba(249, 247, 242, 0.8));
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  border-bottom: 1px solid rgba(217, 211, 202, 0.75);
  background: rgba(252, 251, 248, 0.88);
  backdrop-filter: blur(12px);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 22px 0;
}

.brand-mark {
  margin: 0 0 4px;
  font-family: "Cormorant Garamond", serif;
  font-size: 1.4rem;
  letter-spacing: 0.08em;
  color: var(--accent);
}

.brand h1 {
  margin: 0;
  font-size: 1.15rem;
  font-weight: 500;
}

.site-nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 20px;
  font-size: 0.95rem;
  color: var(--text-subtle);
}

.site-nav a {
  position: relative;
}

.site-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -6px;
  width: 100%;
  height: 1px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: center;
  transition: transform 180ms ease;
}

.site-nav a:hover::after,
.site-nav a:focus-visible::after {
  transform: scaleX(1);
}

.hero {
  padding-top: 72px;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 48px;
  align-items: center;
}

.hero-visual {
  position: relative;
  min-height: 520px;
}

.hero-image {
  width: 100%;
  height: 100%;
  min-height: 520px;
  object-fit: cover;
  object-position: center;
  border-radius: 28px;
  box-shadow: var(--shadow);
}

.eyebrow {
  margin: 0 0 18px;
  color: var(--accent);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  font-size: 0.82rem;
}

.hero-copy h2,
.section-title {
  margin: 0;
  font-family: "Cormorant Garamond", serif;
  font-size: clamp(2.5rem, 5vw, 4.25rem);
  line-height: 1.05;
  letter-spacing: 0.01em;
}

.section-title {
  text-align: center;
  margin-bottom: 28px;
}

.section-title-left {
  text-align: left;
}

.lead,
.section-text {
  margin: 24px auto 0;
  color: var(--text-subtle);
  font-size: 1rem;
}

.works-list {
  margin: 0;
  padding: 0;
  list-style: none;
  text-align: center;
  color: var(--text-subtle);
}

.works-list li + li {
  margin-top: 10px;
}

.company-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
}

.company-visual {
  position: relative;
  min-height: 380px;
}

.device-mockup {
  position: absolute;
  width: 210px;
  height: 320px;
  border-radius: 26px;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.82), rgba(255, 255, 255, 0.4)),
    linear-gradient(135deg, #272626 0%, #545460 100%);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.device-mockup::before {
  content: "";
  position: absolute;
  inset: 16px;
  border-radius: 18px;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.7), transparent 24%),
    repeating-linear-gradient(
      180deg,
      rgba(255, 255, 255, 0.88) 0 18px,
      rgba(236, 237, 241, 0.9) 18px 54px
    );
}

.device-a {
  left: 8px;
  top: 24px;
  transform: rotate(-9deg);
}

.device-b {
  left: 132px;
  top: 0;
  transform: rotate(4deg);
}

.device-c {
  left: 76px;
  top: 120px;
  transform: rotate(11deg);
}

.company-list {
  margin: 28px 0 0;
}

.company-list div {
  display: grid;
  grid-template-columns: 96px 1fr;
  gap: 16px;
  padding: 12px 0;
  border-bottom: 1px solid rgba(217, 211, 202, 0.85);
}

.company-list dt {
  font-weight: 700;
}

.company-list dd {
  margin: 0;
  color: var(--text-subtle);
}

.contact-card {
  padding: 42px;
  border: 1px solid rgba(217, 211, 202, 0.9);
  border-radius: 28px;
  background: rgba(255, 255, 255, 0.72);
  box-shadow: var(--shadow);
  text-align: center;
}

.contact-lead {
  margin: 0 0 18px;
  color: var(--text-subtle);
}

.contact-mail {
  display: inline-block;
  margin-bottom: 18px;
  font-family: "Cormorant Garamond", serif;
  font-size: clamp(2rem, 4vw, 3rem);
  line-height: 1.1;
  color: var(--text);
  border-bottom: 1px solid rgba(180, 134, 76, 0.45);
}

.contact-note {
  margin: 0;
  color: var(--text-subtle);
  font-size: 0.9rem;
}

.site-footer {
  padding: 40px 0 56px;
  color: #7a756c;
  font-size: 0.82rem;
  text-align: center;
}

@media (max-width: 900px) {
  .site-header .container,
  .hero-grid,
  .company-grid {
    grid-template-columns: 1fr;
    display: grid;
  }

  .site-header .container {
    justify-content: initial;
  }

  .site-nav {
    justify-content: flex-start;
    gap: 14px 18px;
  }

  .hero-visual {
    order: 2;
    min-height: 380px;
  }

  .hero-copy {
    order: 1;
  }

  .hero-image {
    min-height: 380px;
  }

  .company-visual {
    min-height: 340px;
  }
}

@media (max-width: 640px) {
  .container {
    width: min(100% - 32px, 1080px);
  }

  .section {
    padding: 72px 0;
  }

  .site-header .container {
    padding: 18px 0;
  }

  .brand h1 {
    font-size: 1rem;
  }

  .site-nav {
    font-size: 0.88rem;
  }

  .hero {
    padding-top: 44px;
  }

  .hero-visual {
    min-height: 300px;
  }

  .hero-image {
    min-height: 300px;
  }

  .company-visual {
    min-height: 280px;
  }

  .device-mockup {
    width: 145px;
    height: 228px;
  }

  .device-a {
    left: 0;
  }

  .device-b {
    left: 92px;
  }

  .device-c {
    left: 44px;
    top: 88px;
  }

  .company-list div {
    grid-template-columns: 1fr;
    gap: 4px;
  }

  .contact-card {
    padding: 28px 22px;
  }
}