/* ===========================
   CSS Variables & Reset
   =========================== */
:root {
  --white:       #FFFBF7;
  --cream-50:    #F5EDE4;
  --cream-100:   #EDE0D4;
  --cream-200:   #DDD0C4;
  --cream-400:   #B0A090;
  --cream-600:   #6B5A4E;
  --navy:        #2A2D3A;
  --accent:      #C4604A;
  --accent-light:#D4745E;
  --accent-dark: #A84E3A;
  --cream:       #E8D4C0;
  --text:        var(--navy);
  --text-mid:    var(--cream-600);
  --text-light:  var(--cream-400);
  --border:      var(--cream-200);
  --card-shadow: 0 2px 8px rgba(42,45,58,0.08), 0 8px 24px rgba(42,45,58,0.06);
  --transition:  0.25s ease;
}

*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

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

body {
  font-family: 'Noto Sans JP', sans-serif;
  background: var(--white);
  color: var(--text);
  line-height: 1.85;
  overflow-x: hidden;
}

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

.container { max-width: 1080px; margin: 0 auto; padding: 0 32px; }

.section { padding: 104px 0; }
.section-alt { background: var(--cream-50); }

.section-title {
  font-family: 'Noto Serif JP', serif;
  font-size: 2rem;
  font-weight: 700;
  color: var(--navy);
  text-align: center;
  letter-spacing: 0.05em;
  margin-bottom: 12px;
}

.section-title::after {
  content: '';
  display: block;
  width: 48px;
  height: 3px;
  background: var(--accent);
  margin: 16px auto 0;
  border-radius: 2px;
}

.section-subtitle {
  text-align: center;
  color: var(--text-mid);
  margin-bottom: 64px;
  font-size: 0.9rem;
  letter-spacing: 0.04em;
}

/* ===========================
   Header
   =========================== */
.header {
  position: fixed;
  top: 0; left: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(255,251,247,0.97);
  border-bottom: 1px solid transparent;
  backdrop-filter: blur(8px);
  transition: border-color var(--transition), box-shadow var(--transition);
}

.header.scrolled {
  border-bottom-color: var(--border);
  box-shadow: 0 1px 12px rgba(42,45,58,0.08);
}

.header-inner {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.logo {
  font-family: 'Noto Serif JP', serif;
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: 0.06em;
}

.logo span { color: var(--navy); }

.nav { display: flex; align-items: center; gap: 4px; }
.nav-list { display: flex; align-items: center; gap: 0; }

.nav-list a {
  display: block;
  padding: 8px 16px;
  color: var(--cream-600);
  font-size: 0.82rem;
  letter-spacing: 0.04em;
  transition: color var(--transition);
}

.nav-list a:hover { color: var(--accent); }

.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 36px;
  height: 36px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  margin-left: 8px;
}

.hamburger span {
  display: block;
  width: 22px;
  height: 1.5px;
  background: var(--navy);
  border-radius: 2px;
  transition: transform 0.3s ease, opacity 0.3s ease;
}

.hamburger.active span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

/* ===========================
   Hero
   =========================== */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  background: url('../images/hero-bg.jpg') center/cover no-repeat;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to right, rgba(42,45,58,0.88) 0%, rgba(42,45,58,0.60) 55%, rgba(42,45,58,0.25) 100%);
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 640px;
  padding: 0 32px;
  margin-left: max(32px, calc((100vw - 1080px) / 2));
}

.hero-label {
  display: inline-block;
  font-size: 0.72rem;
  letter-spacing: 0.25em;
  color: var(--accent-light);
  margin-bottom: 28px;
  border-left: 2px solid var(--accent);
  padding-left: 12px;
}

.hero-title {
  font-family: 'Noto Serif JP', serif;
  font-size: clamp(2.2rem, 4.5vw, 3.6rem);
  font-weight: 700;
  color: var(--white);
  line-height: 1.5;
  letter-spacing: 0.05em;
  margin-bottom: 24px;
}

.hero-sub {
  font-size: 0.92rem;
  color: rgba(255,251,247,0.75);
  margin-bottom: 44px;
  line-height: 2;
}

.hero-buttons { display: flex; gap: 16px; flex-wrap: wrap; }

.btn {
  display: inline-block;
  padding: 14px 36px;
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  border-radius: 2px;
  transition: all var(--transition);
  cursor: pointer;
}

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

.btn-primary:hover { background: var(--accent-light); transform: translateY(-2px); box-shadow: 0 6px 20px rgba(196,96,74,0.35); }

.btn-outline {
  border: 1px solid rgba(255,251,247,0.55);
  color: rgba(255,251,247,0.9);
}

.btn-outline:hover { border-color: var(--white); color: var(--white); transform: translateY(-2px); }

/* ===========================
   Services
   =========================== */
.services-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.service-card {
  background: var(--white);
  padding: 44px 28px;
  text-align: center;
  border: 1px solid var(--border);
  border-radius: 4px;
  transition: box-shadow var(--transition), transform var(--transition);
  box-shadow: var(--card-shadow);
}

.service-card:hover { transform: translateY(-4px); box-shadow: 0 8px 32px rgba(42,45,58,0.12); }

.service-icon {
  font-size: 2rem;
  margin-bottom: 18px;
  width: 64px;
  height: 64px;
  background: var(--cream-50);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
}

.service-name {
  font-family: 'Noto Serif JP', serif;
  font-size: 0.98rem;
  font-weight: 700;
  color: var(--navy);
  margin-bottom: 12px;
  letter-spacing: 0.03em;
}

.service-desc { font-size: 0.82rem; color: var(--text-mid); line-height: 1.85; }

/* ===========================
   Works
   =========================== */
.stats-row {
  display: flex;
  justify-content: center;
  margin-bottom: 72px;
}

.stat-item { text-align: center; }

.stat-number {
  font-family: 'Noto Serif JP', serif;
  font-size: 4rem;
  font-weight: 700;
  color: var(--navy);
  display: block;
  line-height: 1;
  margin-bottom: 12px;
  letter-spacing: -0.02em;
}

.stat-label {
  font-size: 0.82rem;
  color: var(--text-light);
  letter-spacing: 0.1em;
}

/* ===========================
   Case Study
   =========================== */
.case-study {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  border: 1px solid var(--border);
  border-radius: 4px;
  overflow: hidden;
  box-shadow: var(--card-shadow);
}

.case-study-image {
  position: relative;
  overflow: hidden;
}

.case-study-image img {
  width: 100%;
  height: 100%;
  min-height: 480px;
  object-fit: cover;
  filter: grayscale(15%);
  transition: filter var(--transition);
  display: block;
}

.case-study:hover .case-study-image img { filter: grayscale(0%); }

.case-study-tag {
  position: absolute;
  top: 24px;
  left: 24px;
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  background: var(--accent);
  color: var(--white);
  padding: 5px 14px;
  border-radius: 2px;
}

.case-study-body {
  background: var(--white);
  padding: 56px 52px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.case-study-label {
  font-size: 0.72rem;
  letter-spacing: 0.2em;
  color: var(--accent);
  margin-bottom: 20px;
}

.case-study-title {
  font-family: 'Noto Serif JP', serif;
  font-size: 1.45rem;
  font-weight: 700;
  color: var(--navy);
  line-height: 1.65;
  margin-bottom: 36px;
}

.case-study-detail {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-bottom: 36px;
  padding-bottom: 36px;
  border-bottom: 1px solid var(--border);
}

.case-detail-item { display: flex; gap: 16px; align-items: flex-start; }

.case-detail-label {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--navy);
  white-space: nowrap;
  padding-top: 2px;
  min-width: 84px;
  flex-shrink: 0;
}

.case-detail-value {
  font-size: 0.85rem;
  color: var(--text-mid);
  line-height: 1.75;
}

.case-study-voice {
  border: none;
  padding: 0;
}

.case-study-voice p {
  font-size: 0.92rem;
  color: var(--navy);
  line-height: 2;
  font-style: italic;
  position: relative;
  padding-left: 20px;
}

.case-study-voice p::before {
  content: '"';
  position: absolute;
  left: 0;
  top: -4px;
  font-family: 'Noto Serif JP', serif;
  font-size: 2rem;
  color: var(--accent);
  line-height: 1;
}

.case-study-voice cite {
  display: block;
  margin-top: 16px;
  font-size: 0.78rem;
  color: var(--text-light);
  font-style: normal;
  letter-spacing: 0.04em;
  padding-left: 20px;
}

/* ===========================
   About
   =========================== */
.about-content {
  display: flex;
  align-items: flex-start;
  gap: 72px;
}

.about-image-wrap { flex-shrink: 0; }

.about-image-wrap img {
  width: 260px;
  height: 340px;
  object-fit: cover;
  filter: grayscale(10%);
  border: 4px solid var(--cream);
}

.about-text { flex: 1; padding-top: 8px; }

.about-name {
  font-family: 'Noto Serif JP', serif;
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--navy);
  margin-bottom: 4px;
  letter-spacing: 0.05em;
}

.about-role {
  font-size: 0.8rem;
  color: var(--accent);
  letter-spacing: 0.1em;
  margin-bottom: 28px;
}

.about-desc {
  color: var(--text-mid);
  margin-bottom: 32px;
  line-height: 2.1;
  font-size: 0.92rem;
}

.about-licenses { display: flex; flex-direction: column; gap: 10px; border-top: 1px solid var(--border); padding-top: 24px; }

.license-item {
  font-size: 0.82rem;
  color: var(--text-mid);
  display: flex;
  align-items: center;
  gap: 10px;
}

.license-item::before { content: '—'; color: var(--accent); font-weight: 700; }

/* ===========================
   Area
   =========================== */
.area-content {
  display: flex;
  align-items: flex-start;
  gap: 64px;
}

.area-map {
  flex-shrink: 0;
  width: 420px;
  height: 280px;
  overflow: hidden;
  border: 1px solid var(--border);
}

.area-map img { width: 100%; height: 100%; object-fit: cover; filter: grayscale(20%); }

.area-text { flex: 1; }

.area-text h3 {
  font-family: 'Noto Serif JP', serif;
  font-size: 1rem;
  font-weight: 700;
  color: var(--navy);
  margin-bottom: 20px;
  letter-spacing: 0.04em;
}

.area-list { display: flex; flex-direction: column; gap: 12px; margin-bottom: 28px; }

.area-list li {
  font-size: 0.88rem;
  color: var(--text-mid);
  padding-left: 16px;
  position: relative;
}

.area-list li::before {
  content: '';
  position: absolute;
  left: 0; top: 11px;
  width: 6px; height: 1px;
  background: var(--accent);
}

.area-office {
  font-size: 0.85rem;
  color: var(--text-mid);
  padding-left: 16px;
  margin-bottom: 24px;
  position: relative;
}

.area-office::before {
  content: '';
  position: absolute;
  left: 0; top: 11px;
  width: 6px; height: 1px;
  background: var(--accent);
}

.area-note {
  font-size: 0.82rem;
  color: var(--text-light);
  border-left: 2px solid var(--accent);
  padding-left: 14px;
  line-height: 1.9;
}

/* ===========================
   News
   =========================== */
#news-list { display: flex; flex-direction: column; max-width: 760px; margin: 0 auto; }

.news-item { padding: 28px 0; border-bottom: 1px solid var(--border); }
.news-item:first-child { border-top: 1px solid var(--border); }

.news-meta { display: flex; align-items: center; gap: 16px; margin-bottom: 8px; }

.news-date { font-size: 0.8rem; color: var(--text-light); letter-spacing: 0.05em; }

.news-category {
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  border: 1px solid var(--accent);
  color: var(--accent);
  padding: 2px 10px;
  border-radius: 2px;
}

.news-title {
  font-family: 'Noto Serif JP', serif;
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--navy);
  margin-bottom: 6px;
}

.news-body { font-size: 0.85rem; color: var(--text-mid); line-height: 1.85; }
.news-error { text-align: center; color: var(--text-light); padding: 40px 0; }

/* ===========================
   Contact
   =========================== */
.contact-inner { max-width: 640px; margin: 0 auto; }

.contact-info {
  text-align: center;
  margin-bottom: 20px;
  font-size: 0.85rem;
  color: var(--text-mid);
}

.contact-info p { margin: 0; }

.contact-info a {
  color: var(--navy);
  font-weight: 600;
  letter-spacing: 0.04em;
  transition: color var(--transition);
}

.contact-info a:hover { color: var(--accent); }

.contact-instagram {
  text-align: center;
  margin-top: 0;
  margin-bottom: 48px;
  font-size: 0.85rem;
  color: var(--text-mid);
  line-height: 2;
}

.instagram-link {
  display: inline-block;
  margin-top: 8px;
  color: var(--navy);
  font-weight: 600;
  font-size: 0.85rem;
  letter-spacing: 0.04em;
  border-bottom: 1px solid var(--cream-400);
  padding-bottom: 2px;
  transition: border-color var(--transition), color var(--transition);
}

.instagram-link:hover { color: var(--accent); border-color: var(--accent); }

.footer-nav-instagram { font-weight: 600; }

.contact-lead {
  text-align: center;
  color: var(--text-mid);
  margin-bottom: 32px;
  line-height: 2.1;
  font-size: 0.9rem;
}

.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }

.form-group { display: flex; flex-direction: column; gap: 8px; margin-bottom: 20px; }

.form-group label {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--navy);
  letter-spacing: 0.04em;
}

.form-group label .required { color: var(--accent); margin-left: 4px; }

.form-group input,
.form-group textarea {
  padding: 12px 14px;
  border: 1px solid var(--border);
  border-radius: 2px;
  background: var(--white);
  font-family: 'Noto Sans JP', sans-serif;
  font-size: 0.88rem;
  color: var(--text);
  transition: border-color var(--transition);
  outline: none;
}

.form-group input:focus,
.form-group textarea:focus { border-color: var(--accent); }

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

.form-submit { text-align: center; margin-top: 12px; }

.btn-submit {
  background: var(--accent);
  color: var(--white);
  padding: 15px 56px;
  font-size: 0.88rem;
  border: none;
  font-family: 'Noto Sans JP', sans-serif;
  letter-spacing: 0.08em;
}

.btn-submit:hover { background: var(--accent-light); transform: translateY(-2px); box-shadow: 0 6px 20px rgba(196,96,74,0.35); }

/* ===========================
   Footer
   =========================== */
.footer {
  background: var(--navy);
  color: rgba(255,251,247,0.55);
  padding: 56px 0 36px;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 32px;
  margin-bottom: 48px;
}

.footer-logo {
  font-family: 'Noto Serif JP', serif;
  font-size: 1rem;
  color: var(--white);
  margin-bottom: 8px;
  letter-spacing: 0.06em;
}

.footer-logo span { color: var(--accent-light); }

.footer-tagline { font-size: 0.75rem; color: rgba(255,251,247,0.3); letter-spacing: 0.06em; }

.footer-nav { display: flex; gap: 28px; flex-wrap: wrap; }

.footer-nav a { font-size: 0.8rem; color: rgba(255,251,247,0.45); transition: color var(--transition); letter-spacing: 0.04em; }
.footer-nav a:hover { color: var(--accent-light); }

.footer-copy {
  text-align: center;
  font-size: 0.75rem;
  color: rgba(255,251,247,0.25);
  border-top: 1px solid rgba(255,251,247,0.08);
  padding-top: 28px;
  letter-spacing: 0.05em;
}

/* ===========================
   Fade-in Animation
   =========================== */
.fade-in {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.75s ease, transform 0.75s ease;
}

.fade-in.visible { opacity: 1; transform: translateY(0); }

/* ===========================
   Responsive
   =========================== */
@media (max-width: 900px) {
  .services-grid  { grid-template-columns: repeat(2, 1fr); }
  .case-study     { grid-template-columns: 1fr; }
  .case-study-image img { min-height: 280px; }
  .case-study-body { padding: 40px 36px; }
  .about-content  { flex-direction: column; gap: 40px; }
  .about-image-wrap img { width: 100%; height: 280px; }
  .area-content  { flex-direction: column; gap: 32px; }
  .area-map      { width: 100%; }
}

@media (max-width: 768px) {
  .hamburger { display: flex; }

  .nav-list {
    position: fixed;
    top: 72px; left: 0;
    width: 100%;
    background: rgba(255,251,247,0.98);
    backdrop-filter: blur(8px);
    flex-direction: column;
    align-items: center;
    gap: 0;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease;
    border-bottom: 1px solid var(--border);
  }

  .nav-list.open  { max-height: 360px; padding: 12px 0; }
  .nav-list li    { width: 100%; text-align: center; }
  .nav-list a     { padding: 14px 0; color: var(--navy); }

  .hero-content { margin-left: 0; padding: 0 24px; }

  .section-subtitle { margin-bottom: 48px; }

  .footer-inner  { flex-direction: column; gap: 24px; }
  .footer-nav    { gap: 16px; }
  .section       { padding: 72px 0; }
}

@media (max-width: 480px) {
  .services-grid  { grid-template-columns: 1fr; }
  .stat-number    { font-size: 2.4rem; }
  .case-study-body { padding: 28px 20px; }
  .form-row      { grid-template-columns: 1fr; }
  .hero-buttons  { flex-direction: column; align-items: flex-start; }
  .container     { padding: 0 20px; }
  .section       { padding: 56px 0; }
  .section-subtitle { margin-bottom: 36px; }
  .case-study-title { font-size: 1.2rem; }
  /* iPhone SE (375px) 含む480px以下でhero-titleの折り返しを防止 */
  .hero-title    { font-size: clamp(1.6rem, 7.5vw, 2.2rem); }
}

@media (max-width: 360px) {
  /* hero-subの強制改行を解除して自然折り返しへ */
  .hero-sub br   { display: none; }
  .hero-buttons  { align-items: stretch; }
  .btn           { text-align: center; }
  /* containerのpadding縮小（320px幅確保） */
  .container     { padding: 0 16px; }
  .hero-content  { padding: 0 16px; }
  /* section余白を320px向けに調整 */
  .section       { padding: 48px 0; }
  .section-subtitle { margin-bottom: 28px; }
  /* case-study-bodyのpadding縮小 */
  .case-study-body { padding: 24px 16px; }
  /* news-metaが収まるよう調整 */
  .news-meta     { gap: 10px; flex-wrap: wrap; }
  /* stats-row余白縮小 */
  .stats-row     { margin-bottom: 48px; }
  /* footer-nav文字サイズ調整 */
  .footer-nav    { gap: 12px; }
}

/* タブレット: hero-contentを中央揃えに */
@media (min-width: 600px) and (max-width: 1080px) {
  .hero::before {
    background: rgba(42,45,58,0.65);
  }
  .hero-content {
    margin: 0 auto;
    text-align: center;
    padding: 0 32px;
  }
  .hero-label {
    padding-left: 0;
    border-left: none;
    display: block;
    text-align: center;
  }
  .hero-buttons {
    justify-content: center;
  }
}

/* News list link */
.news-link {
  display: inline-block;
  margin-top: 0.5rem;
  color: var(--accent);
  font-size: 0.875rem;
  font-weight: 600;
  text-decoration: none;
  transition: opacity 0.2s;
}
.news-link:hover { opacity: 0.7; }

/* News empty / error */
.news-empty, .news-error {
  text-align: center;
  color: var(--text-mid);
  padding: 2rem 0;
}

/* News back link */
.news-back-link {
  display: inline-block;
  margin-bottom: 2rem;
  color: var(--accent);
  font-size: 0.9rem;
  font-weight: 600;
  text-decoration: none;
  transition: opacity 0.2s;
}
.news-back-link:hover { opacity: 0.7; }

.news-detail-image {
  margin-bottom: 2rem;
  border-radius: 4px;
  overflow: hidden;
}
.news-detail-image img {
  width: 100%;
  max-height: 480px;
  object-fit: cover;
  display: block;
}

/* News detail page */
.news-detail-main {
  padding-top: 120px;
  min-height: 60vh;
}

.news-detail-meta {
  margin-bottom: 1rem;
}

.news-detail-title {
  font-family: 'Noto Serif JP', serif;
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--navy);
  text-align: left;
  letter-spacing: 0.05em;
  margin-bottom: 1.5rem;
}

.news-detail-body {
  line-height: 2;
  color: var(--text);
}