/* 株式会社あすと サイト共通スタイル（グレースケール基調） */

:root {
  --color-ink: #141414;
  --color-text: #2b2b2b;
  --color-muted: #6e6e6e;
  --color-line: #dcdcdc;
  --color-bg: #fafafa;
  --color-bg-alt: #f0f0f0;
  --color-white: #ffffff;

  --font-sans: "Noto Sans JP", "Hiragino Sans", "Yu Gothic", "Meiryo", sans-serif;
  --font-serif: "Cormorant Garamond", "Times New Roman", serif;

  --container: 1080px;
  --gutter: 24px;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 72px;
}

body {
  margin: 0;
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-sans);
  font-weight: 400;
  font-size: 16px;
  line-height: 1.9;
  letter-spacing: 0.04em;
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
}

h1,
h2,
h3 {
  margin: 0;
  color: var(--color-ink);
  font-weight: 500;
}

p {
  margin: 0;
}

.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

/* ヘッダー */
.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(250, 250, 250, 0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--color-line);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.wordmark {
  font-family: var(--font-serif);
  font-size: 26px;
  font-weight: 500;
  letter-spacing: 0.24em;
  color: var(--color-ink);
  text-decoration: none;
}

.wordmark-small {
  font-size: 18px;
}

.site-nav {
  display: flex;
  gap: 32px;
}

.site-nav a {
  font-size: 14px;
  color: var(--color-muted);
  text-decoration: none;
  transition: color 0.2s;
}

.site-nav a:hover {
  color: var(--color-ink);
}

/* ファーストビュー */
.hero {
  padding: 160px 0 140px;
  border-bottom: 1px solid var(--color-line);
}

.eyebrow {
  font-family: var(--font-serif);
  font-size: 16px;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--color-muted);
  margin-bottom: 20px;
}

.hero-title {
  font-size: clamp(32px, 5.4vw, 56px);
  font-weight: 300;
  line-height: 1.5;
  letter-spacing: 0.08em;
}

.hero-lead {
  margin-top: 40px;
  max-width: 640px;
  color: var(--color-muted);
  font-size: 15px;
}

/* セクション共通 */
.section {
  padding: 120px 0;
}

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

.section-head {
  margin-bottom: 64px;
}

.section-title {
  font-size: 26px;
  letter-spacing: 0.12em;
}

/* 事業内容 */
.services {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--color-line);
  border: 1px solid var(--color-line);
}

.service {
  background: var(--color-white);
  padding: 48px 40px 56px;
}

.service-num {
  display: block;
  font-family: var(--font-serif);
  font-size: 40px;
  font-variant-numeric: lining-nums;
  line-height: 1;
  color: #b4b4b4;
  margin-bottom: 28px;
}

.service-title {
  font-size: 19px;
  line-height: 1.6;
  margin-bottom: 20px;
}

.service-text {
  font-size: 14.5px;
  color: var(--color-muted);
}

/* 会社概要 */
.company-table {
  margin: 0;
  border-top: 1px solid var(--color-ink);
}

.company-table .row {
  display: grid;
  grid-template-columns: 200px 1fr;
  padding: 24px 0;
  border-bottom: 1px solid var(--color-line);
}

.company-table dt {
  color: var(--color-muted);
  font-size: 14px;
}

.company-table dd {
  margin: 0;
  overflow-wrap: anywhere;
}

/* お問い合わせ */
.contact {
  text-align: center;
}

.contact .section-title {
  margin-bottom: 32px;
}

.contact-text {
  color: var(--color-muted);
  font-size: 15px;
}

.contact-button {
  display: inline-block;
  margin-top: 40px;
  padding: 18px 48px;
  border: 1px solid var(--color-ink);
  color: var(--color-ink);
  text-decoration: none;
  letter-spacing: 0.1em;
  transition: background 0.2s, color 0.2s;
}

.contact-button:hover {
  background: var(--color-ink);
  color: var(--color-white);
}

/* フッター */
.site-footer {
  background: var(--color-ink);
  color: #a8a8a8;
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 40px;
  padding-bottom: 40px;
}

.site-footer .wordmark {
  color: var(--color-white);
}

.site-footer small {
  font-size: 12px;
}

/* 404 */
.notfound {
  min-height: 70vh;
  display: flex;
  align-items: center;
}

.notfound .hero-lead a {
  color: var(--color-ink);
}

/* スマートフォン */
@media (max-width: 768px) {
  :root {
    --gutter: 16px;
  }

  .header-inner {
    height: 56px;
  }

  .wordmark {
    font-size: 20px;
  }

  .site-nav {
    gap: 16px;
  }

  .site-nav a {
    font-size: 12px;
  }

  .pc-only {
    display: none;
  }

  .hero {
    padding: 96px 0 88px;
  }

  .hero-lead {
    margin-top: 28px;
    font-size: 14px;
  }

  .section {
    padding: 80px 0;
  }

  .section-head {
    margin-bottom: 40px;
  }

  .services {
    grid-template-columns: 1fr;
  }

  .service {
    padding: 36px 24px 40px;
  }

  .company-table .row {
    grid-template-columns: 1fr;
    gap: 4px;
    padding: 20px 0;
  }

  .contact-button {
    padding: 16px 28px;
  }

  .footer-inner {
    flex-direction: column;
    gap: 8px;
  }
}