/* ===================================================
   株式会社ASLEAD — 共通スタイル
   =================================================== */

@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+JP:wght@400;500;700&family=Noto+Serif+JP:wght@400;700&family=DM+Serif+Display&display=swap');

/* ---------- リセット & 変数 ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --white:       #ffffff;
  --bg:          #f8f7f5;
  --stone:       #e8e4de;
  --stone-dark:  #c9c2b8;
  --ink:         #1a1a1a;
  --ink-mid:     #444444;
  --ink-light:   #888888;
  --red:         #c0392b;
  --red-dark:    #9b2c1f;
  --serif:       'DM Serif Display', 'Noto Serif JP', serif;
  --sans:        'Noto Sans JP', sans-serif;
  --header-h:    72px;
}

html { scroll-behavior: smooth; }

body {
  font-family: var(--sans);
  background: var(--bg);
  color: var(--ink);
  line-height: 1.8;
  font-size: 15px;
}

img { max-width: 100%; display: block; }
a  { color: inherit; text-decoration: none; }

/* ---------- ユーティリティ ---------- */
.container {
  width: min(1080px, 92%);
  margin-inline: auto;
}

.section {
  padding: 80px 0;
}

.section-title {
  font-family: var(--serif);
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  letter-spacing: .03em;
  margin-bottom: 8px;
  color: var(--ink);
}

.section-sub {
  font-size: .8rem;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--ink-light);
  margin-bottom: 40px;
}

.divider {
  width: 40px;
  height: 2px;
  background: var(--red);
  margin: 12px 0 40px;
}

/* ---------- ヘッダー ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--white);
  border-bottom: 1px solid var(--stone);
  height: var(--header-h);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  gap: 16px;
}

.logo {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}

.logo-en {
  font-family: var(--serif);
  font-size: 1.25rem;
  letter-spacing: .06em;
  color: var(--ink);
}

.logo-ja {
  font-size: .65rem;
  color: var(--ink-light);
  letter-spacing: .08em;
}

.header-tel {
  font-weight: 700;
  font-size: .95rem;
  letter-spacing: .04em;
  white-space: nowrap;
  line-height: 1.3;
}

.header-tel span {
  display: block;
  font-size: .65rem;
  font-weight: 400;
  color: var(--ink-light);
  letter-spacing: .05em;
}

.header-nav {
  display: flex;
  align-items: center;
  gap: 28px;
}

.header-nav a {
  font-size: .8rem;
  letter-spacing: .08em;
  color: var(--ink-mid);
  transition: color .2s;
}

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

.btn-contact {
  display: inline-block;
  padding: 10px 22px;
  background: var(--red);
  color: var(--white) !important;
  font-size: .75rem;
  font-weight: 700;
  letter-spacing: .1em;
  border-radius: 2px;
  transition: background .2s, transform .15s;
  white-space: nowrap;
}

.btn-contact:hover {
  background: var(--red-dark);
  transform: translateY(-1px);
}

/* ---------- ハンバーガー ---------- */
.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 6px;
  background: none;
  border: none;
}

.menu-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--ink);
  transition: .3s;
}

/* ---------- フッター ---------- */
.site-footer {
  background: var(--ink);
  color: #aaa;
  padding: 48px 0 28px;
  font-size: .78rem;
}

.footer-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  margin-bottom: 36px;
}

.footer-logo {
  font-family: var(--serif);
  font-size: 1.2rem;
  color: var(--white);
  margin-bottom: 8px;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 8px;
  align-items: flex-end;
}

.footer-links a {
  color: #aaa;
  transition: color .2s;
}

.footer-links a:hover { color: var(--white); }

.footer-copy {
  border-top: 1px solid #333;
  padding-top: 20px;
  text-align: center;
  color: #555;
  font-size: .72rem;
  letter-spacing: .06em;
}

/* ---------- ボタン共通 ---------- */
.btn {
  display: inline-block;
  padding: 14px 36px;
  font-size: .8rem;
  font-weight: 700;
  letter-spacing: .1em;
  border-radius: 2px;
  transition: .2s;
}

.btn-primary {
  background: var(--red);
  color: var(--white);
}

.btn-primary:hover {
  background: var(--red-dark);
  transform: translateY(-2px);
}

.btn-outline {
  border: 1.5px solid var(--ink);
  color: var(--ink);
}

.btn-outline:hover {
  background: var(--ink);
  color: var(--white);
}

/* ---------- ページバナー（下層ページ用） ---------- */
.page-banner {
  background: var(--stone);
  border-bottom: 1px solid var(--stone-dark);
  padding: 52px 0 40px;
}

.page-banner h1 {
  font-family: var(--serif);
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  letter-spacing: .04em;
  margin-bottom: 4px;
}

.page-banner .page-sub {
  font-size: .75rem;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--ink-light);
}

/* ---------- パンくず ---------- */
.breadcrumb {
  font-size: .72rem;
  color: var(--ink-light);
  letter-spacing: .04em;
  padding: 14px 0;
  border-bottom: 1px solid var(--stone);
  background: var(--white);
}

.breadcrumb a { color: var(--ink-light); }
.breadcrumb a:hover { color: var(--ink); }
.breadcrumb span { margin: 0 6px; }

/* ---------- フォーム ---------- */
.form-group {
  margin-bottom: 24px;
}

.form-group label {
  display: block;
  font-size: .8rem;
  font-weight: 700;
  letter-spacing: .06em;
  margin-bottom: 8px;
  color: var(--ink);
}

.form-group label .required {
  color: var(--red);
  margin-left: 4px;
  font-size: .7rem;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 12px 16px;
  border: 1.5px solid var(--stone-dark);
  border-radius: 2px;
  font-family: var(--sans);
  font-size: .9rem;
  color: var(--ink);
  background: var(--white);
  transition: border-color .2s;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--ink);
}

.form-group textarea { min-height: 160px; resize: vertical; }

/* ---------- レスポンシブ ---------- */
@media (max-width: 768px) {
  .header-tel { display: none; }

  .menu-toggle { display: flex; }

  .header-nav {
    display: none;
    position: absolute;
    top: var(--header-h);
    left: 0; right: 0;
    background: var(--white);
    border-top: 1px solid var(--stone);
    border-bottom: 1px solid var(--stone);
    flex-direction: column;
    align-items: flex-start;
    padding: 20px 24px;
    gap: 16px;
    box-shadow: 0 4px 12px rgba(0,0,0,.06);
  }

  .header-nav.open { display: flex; }

  .header-nav a { font-size: .9rem; }

  .footer-inner { grid-template-columns: 1fr; }
  .footer-links { align-items: flex-start; }

  .section { padding: 56px 0; }
}