/* ─── Hero ─── */
.hero {
  min-height: 100vh; display: flex; align-items: center;
  position: relative; overflow: hidden; background: var(--ink); color: var(--shiro);
}
.hero::before {
  content: ''; position: absolute; inset: 0; opacity: 0.04;
  background-image:
    repeating-linear-gradient(60deg, var(--shiro) 0, var(--shiro) 1px, transparent 1px, transparent 30px),
    repeating-linear-gradient(-60deg, var(--shiro) 0, var(--shiro) 1px, transparent 1px, transparent 30px),
    repeating-linear-gradient(0deg, var(--shiro) 0, var(--shiro) 1px, transparent 1px, transparent 30px);
  background-size: 52px 90px;
}
.hero .container {
  position: relative; z-index: 1;
  display: grid; grid-template-columns: 1fr 1fr; gap: 80px; align-items: center; padding-top: 64px;
}
.hero-tagline { font-family: var(--mono); font-size: 11px; letter-spacing: 0.2em; text-transform: uppercase; color: var(--kin-light); margin-bottom: 24px; }
.hero h1 { font-family: var(--serif); font-size: clamp(32px, 5vw, 56px); font-weight: 900; line-height: 1.3; margin-bottom: 8px; letter-spacing: 0.02em; }
.hero-en { font-family: var(--serif); font-size: clamp(13px, 1.5vw, 16px); color: var(--kin-light); font-weight: 400; font-style: italic; margin-bottom: 32px; letter-spacing: 0.02em; }
.hero-sub { font-size: clamp(14px, 2vw, 16px); color: var(--sand); line-height: 1.8; margin-bottom: 40px; }
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }
.hero-visual { display: flex; justify-content: flex-end; align-items: center; }
.hero-vertical-text {
  writing-mode: vertical-rl; font-family: var(--serif);
  font-size: clamp(48px, 8vw, 96px); font-weight: 900;
  color: rgba(248,246,242,0.06); line-height: 1; letter-spacing: 0.15em; user-select: none;
}

/* ─── XRegion highlight ─── */
.xregion { padding: var(--section-py) 0; background: var(--shiro); border-bottom: 1px solid var(--sand); }
.xregion-header { display: flex; justify-content: space-between; align-items: flex-end; flex-wrap: wrap; gap: 24px; margin-bottom: 48px; }
.xregion-header .section-desc { margin-bottom: 0; }
.reasons-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.reason-card {
  background: var(--washi); border: 1px solid var(--sand); border-radius: 4px; padding: 32px;
  transition: box-shadow 0.2s;
}
.reason-card:hover { box-shadow: 0 4px 24px rgba(0,0,0,0.06); }
.reason-num { font-family: var(--mono); font-size: 28px; font-weight: 500; color: var(--aka); margin-bottom: 12px; line-height: 1; }
.reason-card h4 { font-size: 16px; font-weight: 700; color: var(--ink); margin-bottom: 8px; line-height: 1.4; }
.reason-card p { font-size: 13px; color: var(--ash); line-height: 1.7; }

/* ─── Services ─── */
.services { padding: var(--section-py) 0; background: var(--ink); color: var(--shiro); }
.services .section-label { color: var(--kin-light); }
.services .section-label::before { background: var(--kin-light); }
.services .section-title { color: var(--shiro); }
.services .section-desc { color: var(--sand); }
.services-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 2px; }
.service-card {
  background: rgba(255,255,255,0.04); border: 1px solid rgba(255,255,255,0.06);
  padding: 40px; position: relative; transition: background 0.2s; display: flex; flex-direction: column;
}
.service-card:hover { background: rgba(255,255,255,0.07); }
.service-num { font-family: var(--mono); font-size: 11px; color: var(--kin-light); letter-spacing: 0.15em; margin-bottom: 20px; }
.service-card h3 { font-family: var(--serif); font-size: 22px; font-weight: 700; margin-bottom: 6px; line-height: 1.3; }
.service-en { font-family: var(--mono); font-size: 11px; color: var(--ash); letter-spacing: 0.08em; margin-bottom: 16px; }
.service-card p { font-size: 14px; color: var(--sand); line-height: 1.8; }
.service-tags { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 16px; }
.service-tag { font-family: var(--mono); font-size: 10px; letter-spacing: 0.06em; color: var(--ash); border: 1px solid rgba(255,255,255,0.1); padding: 4px 10px; border-radius: 2px; }
.service-link {
  margin-top: auto; padding-top: 20px;
  font-family: var(--mono); font-size: 12px; color: var(--aka); letter-spacing: 0.06em;
  display: inline-flex; align-items: center; gap: 6px; transition: color 0.2s;
}
.service-link:hover { color: var(--kin-light); }

/* ─── Cases ─── */
.cases { padding: var(--section-py) 0; background: var(--washi); border-top: 1px solid var(--sand); }
.cases-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.case-card { background: var(--shiro); border: 1px solid var(--sand); border-radius: 4px; overflow: hidden; transition: box-shadow 0.2s; }
.case-card:hover { box-shadow: 0 4px 24px rgba(0,0,0,0.06); }
.case-thumb { aspect-ratio: 16/10; background: var(--sumi); display: flex; align-items: center; justify-content: center; }
.case-thumb-label { font-family: var(--mono); font-size: 11px; color: var(--sand); letter-spacing: 0.1em; }
.case-content { padding: 24px; }
.case-org { font-family: var(--mono); font-size: 10px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--aka); margin-bottom: 8px; }
.case-card h4 { font-size: 15px; font-weight: 700; line-height: 1.5; margin-bottom: 8px; color: var(--ink); }
.case-card p { font-size: 13px; color: var(--ash); line-height: 1.7; }

/* ─── News ─── */
.news { padding: var(--section-py) 0; background: var(--shiro); border-top: 1px solid var(--sand); }
.news-list { border-top: 1px solid var(--sand); }
.news-item { display: grid; grid-template-columns: 120px 1fr; gap: 24px; align-items: baseline; padding: 20px 0; border-bottom: 1px solid rgba(200,192,184,0.5); }
.news-date { font-family: var(--mono); font-size: 12px; color: var(--ash); letter-spacing: 0.05em; }
.news-item a { font-size: 14px; color: var(--sumi); transition: color 0.15s; }
.news-item a:hover { color: var(--aka); }

/* ─── CTA ─── */
.cta { padding: 80px 0; background: var(--sumi); color: var(--shiro); text-align: center; }
.cta h2 { font-family: var(--serif); font-size: clamp(24px, 3vw, 36px); font-weight: 700; margin-bottom: 8px; }
.cta .cta-sub { font-size: 14px; color: var(--sand); margin-bottom: 36px; }

/* ─── Responsive ─── */
@media (max-width: 900px) {
  .hero .container { grid-template-columns: 1fr; gap: 40px; }
  .hero-visual { display: none; }
  .reasons-grid { grid-template-columns: 1fr; }
  .services-grid { grid-template-columns: 1fr; }
  .cases-grid { grid-template-columns: 1fr; }
}
@media (max-width: 600px) {
  .hero { min-height: 90vh; }
  .hero-actions { flex-direction: column; }
  .btn-primary, .btn-secondary { justify-content: center; }
  .news-item { grid-template-columns: 100px 1fr; gap: 12px; }
}