/* assets/css/style.css */
:root {
  --primary-color: #2d4032; /* 森の深い緑 */
  --accent-color: #a47e5c;  /* 木材の茶 */
  --bg-color: #fdfdfb;      /* わずかに温かみのある白 */
  --text-color: #333;
  --spacing-lg: 100px;
  --spacing-md: 60px;
}

body { background-color: var(--bg-color); color: var(--text-color); }

/* Layout */
.l-container { max-width: 1100px; margin: 0 auto; padding: 0 25px; }
.l-header {
  height: 90px;
  display: flex;
  align-items: center;
  position: sticky;
  top: 0;
  background: rgba(253, 253, 251, 0.9);
  backdrop-filter: blur(10px);
  z-index: 100;
}
.l-header .inner { display: flex; justify-content: space-between; align-items: center; width: 100%; }
.header-logo a { font-weight: 600; letter-spacing: .06em; }
.l-footer { background: var(--primary-color); color: #fff; padding: 60px 0 20px; margin-top: var(--spacing-lg); }

/* Components */
.c-btn { display: inline-block; padding: 18px 45px; border: 1px solid var(--primary-color); transition: 0.3s; letter-spacing: 0.1em; }
.c-btn-primary { background: var(--primary-color); color: #fff; }
.c-btn-primary:hover { background: transparent; color: var(--primary-color); }
.u-text-center { text-align: center; }

/* Typography */
.section-title { font-size: 2rem; margin-bottom: 40px; letter-spacing: 0.15em; font-weight: 500; }
.en { display: block; font-size: 0.9rem; color: var(--accent-color); margin-bottom: 10px; }

/* Sections */
.p-hero { height: 80vh; display: flex; align-items: center; background: #e0e4e1; position: relative; overflow: hidden; }
.p-hero-content { position: relative; z-index: 2; }
.p-hero-title { font-size: clamp(2rem, 5vw, 3.5rem); line-height: 1.4; margin-bottom: 20px; }
.p-section { padding: var(--spacing-lg) 0; }
.p-concept-lead { font-size: 1.25rem; line-height: 2; max-width: 700px; margin: 0 auto; }

/* Navigation */
.nav-list { display: flex; gap: 30px; align-items: center; }
.nav-list a { font-size: 0.9rem; font-weight: 500; letter-spacing: .08em; }

/* Contact Form */
.form-wrapper { display: flex; justify-content: center; background: #fff; padding: 40px 0; border-radius: 8px; width: 100%; }