/* ===== RESET & BASE ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
body { font-family: 'Noto Sans JP', 'Hiragino Kaku Gothic ProN', Meiryo, sans-serif; color: #333; font-size: 15px; line-height: 1.8; }
a { color: inherit; text-decoration: none; }
img { max-width: 100%; height: auto; display: block; }
ul { list-style: none; }

/* ===== VARIABLES ===== */
:root {
  --orange: #e05a1e;
  --orange-light: #f07030;
  --dark: #333;
  --gray-bg: #f5f5f5;
  --white: #fff;
}

/* ===== HEADER ===== */
header {
  position: fixed; top: 0; left: 0; width: 100%; z-index: 1000;
  background: #fff; box-shadow: 0 2px 8px rgba(0,0,0,.1);
}
.header-inner {
  max-width: 1100px; margin: 0 auto;
  display: flex; align-items: center; justify-content: space-between;
  padding: 10px 24px;
}
.header-logo img { height: 52px; width: auto; }
.header-nav ul { display: flex; gap: 28px; align-items: center; }
.header-nav ul li a {
  font-size: 13px; font-weight: 600; color: #333;
  padding-bottom: 2px; border-bottom: 2px solid transparent;
  transition: color .2s, border-color .2s;
}
.header-nav ul li a:hover { color: var(--orange); border-color: var(--orange); }
.btn-contact {
  background: #333; color: #fff !important; border-radius: 4px;
  padding: 8px 18px !important; border-bottom: none !important;
  transition: background .2s !important;
}
.btn-contact:hover { background: var(--orange) !important; }
.hamburger { display: none; flex-direction: column; gap: 5px; cursor: pointer; background: none; border: none; padding: 4px; }
.hamburger span { display: block; width: 24px; height: 2px; background: #333; transition: .3s; }

/* ===== MOBILE NAV ===== */
.mobile-nav {
  display: none; position: fixed; top: 72px; left: 0; width: 100%;
  background: #fff; box-shadow: 0 4px 12px rgba(0,0,0,.1); z-index: 999; padding: 16px 0;
}
.mobile-nav.open { display: block; }
.mobile-nav ul { display: flex; flex-direction: column; }
.mobile-nav ul li a { display: block; padding: 12px 24px; font-size: 14px; font-weight: 600; border-bottom: 1px solid #eee; }
.mobile-nav ul li a:hover { color: var(--orange); background: #fafafa; }

/* ===== PAGE HERO ===== */
.page-hero {
  margin-top: 72px; background: var(--gray-bg);
  padding: 60px 24px; text-align: center;
}
.page-hero .en {
  font-size: 42px; font-weight: 900; color: var(--orange);
  letter-spacing: .08em; display: block;
}
.page-hero .ja { font-size: 14px; color: #666; display: block; margin-top: 4px; }
.page-hero .divider {
  width: 40px; height: 3px; background: var(--orange);
  margin: 12px auto 0;
}

/* ===== SECTION COMMON ===== */
.section { padding: 80px 24px; }
.section-inner { max-width: 1000px; margin: 0 auto; }
.section-title { text-align: center; margin-bottom: 48px; }
.section-title .en { font-size: 36px; font-weight: 900; color: var(--orange); letter-spacing: .08em; display: block; }
.section-title .ja { font-size: 13px; color: #666; display: block; margin-top: 4px; }
.section-title .divider { width: 40px; height: 3px; background: var(--orange); margin: 10px auto 0; }
.bg-gray { background: var(--gray-bg); }

/* ===== BUTTONS ===== */
.btn-outline {
  display: inline-block; border: 2px solid var(--orange); color: var(--orange);
  border-radius: 40px; padding: 10px 32px; font-size: 14px; font-weight: 600;
  transition: background .2s, color .2s;
}
.btn-outline:hover { background: var(--orange); color: #fff; }
.btn-solid {
  display: inline-block; background: var(--orange); color: #fff;
  border-radius: 40px; padding: 12px 36px; font-size: 14px; font-weight: 600;
  transition: background .2s;
}
.btn-solid:hover { background: #c04010; }
.btn-tel {
  display: inline-block; border: 2px solid #fff; color: #fff;
  border-radius: 40px; padding: 12px 32px; font-size: 15px; font-weight: 700;
  transition: background .2s, color .2s;
}
.btn-tel:hover { background: #fff; color: var(--dark); }
.btn-solid-orange {
  display: inline-block; background: var(--orange); color: #fff;
  border-radius: 40px; padding: 12px 32px; font-size: 14px; font-weight: 700;
  transition: background .2s;
}
.btn-solid-orange:hover { background: #c04010; }

/* ===== CONTACT SECTION ===== */
.contact-section {
  background: #3a3a3a; color: #fff; padding: 80px 24px; text-align: center;
}
.contact-section .section-title .en { color: #fff; }
.contact-section .section-title .ja { color: #ccc; }
.contact-section .section-title .divider { background: #fff; }
.contact-section p { margin-bottom: 40px; color: #ddd; }
.contact-grid {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 32px; max-width: 700px; margin: 0 auto;
}
.contact-item { text-align: center; }
.contact-label { font-size: 13px; color: #aaa; margin-bottom: 12px; }

/* ===== FOOTER ===== */
footer { background: #f0f0f0; padding: 40px 24px 20px; }
.footer-inner {
  max-width: 1100px; margin: 0 auto;
  display: flex; align-items: flex-start; justify-content: space-between; flex-wrap: wrap; gap: 24px;
}
.footer-logo img { height: 52px; width: auto; }
.footer-info { font-size: 13px; color: #555; margin-top: 8px; line-height: 1.9; }
.footer-info strong { font-size: 15px; color: #333; display: block; margin-bottom: 4px; }
.footer-nav { display: flex; flex-wrap: wrap; gap: 16px; align-items: center; }
.footer-nav a { font-size: 13px; color: #555; }
.footer-nav a:hover { color: var(--orange); }
.footer-copy { text-align: center; font-size: 12px; color: #999; margin-top: 24px; border-top: 1px solid #ddd; padding-top: 16px; }

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
  .header-nav { display: none; }
  .hamburger { display: flex; }
  .contact-grid { grid-template-columns: 1fr; }
  .footer-inner { flex-direction: column; }
  .footer-nav { justify-content: center; }
  .page-hero .en { font-size: 30px; }
}