:root {
  --bg: #f8f6f3;
  --text: #1a1a1a;
  --accent: #7a6a53;
  --soft-white: rgba(255, 255, 255, 0.9);
  --border: rgba(0, 0, 0, 0.08);
  --transition-slow: 1.2s cubic-bezier(0.22, 1, 0.36, 1);
}

/* Base & Texture */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
body {
  background-color: var(--bg);
  color: var(--text);
  font-family: 'Noto Serif JP', serif;
  line-height: 1.8;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image: url('https://www.transparenttextures.com/patterns/stardust.png');
  opacity: 0.12;
  pointer-events: none;
  z-index: 100;
}

/* Header */
header {
  position: fixed;
  top: 0;
  width: 100%;
  height: 100px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0 5%;
  z-index: 1000;
  transition: 0.5s;
}
header.scrolled {
  background: var(--soft-white);
  height: 70px;
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}
.logo {
  font-size: 1.4rem;
  letter-spacing: 0.3em;
  font-weight: 500;
  text-decoration: none;
  color: var(--text);
}
nav a {
  font-size: 0.75rem;
  letter-spacing: 0.15em;
  text-decoration: none;
  color: var(--text);
  margin-left: 30px;
  transition: 0.3s;
  opacity: 0.7;
}
nav a:hover {
  opacity: 1;
  color: var(--accent);
}

/* Key Animations */
.reveal {
  opacity: 0;
  transform: translateY(50px);
  transition: var(--transition-slow);
}
.reveal.active {
  opacity: 1;
  transform: translateY(0);
}

.reveal-text {
  opacity: 0;
  transform: translateY(30px); /* 少し下から浮き上がる */
  transition: opacity 1.5s cubic-bezier(0.22, 1, 0.36, 1),
    transform 1.5s cubic-bezier(0.22, 1, 0.36, 1);
  will-change: opacity, transform; /* ブラウザに描画最適化を指示 */
}

/* 2. active クラスがついた時の状態 */
.reveal-text.active {
  opacity: 1;
  transform: translateY(0);
}

/* Sections */
section {
  padding: 160px 10%;
  position: relative;
  z-index: 10;
}
.container {
  max-width: 1200px;
  margin: 0 auto;
}

.hero {
  height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.label {
  font-family: 'Cormorant Garamond', serif;
  font-style: italic;
  color: var(--accent);
  font-size: 1.2rem;
  display: block;
  margin-bottom: 2rem;
}

.h-large {
  font-size: clamp(2.2rem, 5vw, 4.2rem);
  font-weight: 700;
  line-height: 1.4;
  letter-spacing: 0.15em;
  margin-bottom: 2rem;
  display: block; /* 確実に領域を確保 */
}

/* Layout Boxes */
.content-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 80px;
  margin-top: 60px;
  align-items: start;
}
.content-card {
  background: var(--soft-white);
  padding: 80px;
  border: 1px solid var(--border);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.02);
}

/* Service List */
.service-list {
  list-style: none;
  margin-top: 40px;
  border-top: 1px solid var(--border);
}
.service-list li {
  padding: 25px 0;
  border-bottom: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: 0.4s;
}
.service-list li:hover {
  padding-left: 15px;
  color: var(--accent);
}
.service-list li::after {
  content: '→';
  font-family: 'Cormorant Garamond';
  font-size: 1.5rem;
}

/* Footer */
footer {
  background: #1a1a1a;
  color: #fff;
  padding: 100px 10% 40px;
  position: relative;
  z-index: 10;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 60px;
  padding-bottom: 60px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}
.footer-logo {
  font-size: 1.8rem;
  letter-spacing: 0.4em;
  margin-bottom: 2rem;
  display: block;
}
.footer-copy {
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.5);
  line-height: 2;
}
.footer-nav h4 {
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  color: var(--accent);
  margin-bottom: 2rem;
}
.footer-nav ul {
  list-style: none;
}
.footer-nav li {
  margin-bottom: 12px;
}
.footer-nav a {
  color: rgba(255, 255, 255, 0.7);
  text-decoration: none;
  font-size: 0.9rem;
  transition: 0.3s;
}
.footer-nav a:hover {
  color: #fff;
}

.copyright {
  padding-top: 40px;
  display: flex;
  justify-content: space-between;
  font-family: 'Cormorant Garamond';
  font-size: 0.8rem;
  opacity: 0.4;
}

@media (max-width: 900px) {
  .content-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .content-card {
    padding: 40px 20px;
  }
  .footer-grid {
    grid-template-columns: 1fr;
  }
}