/* ===== Nishio Electric — clean refresh shared styles ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
:root {
  --ink:        #1a1d20;
  --ink-soft:   #4b5158;
  --ink-mute:   #8a9099;
  --line:       #e6e8eb;
  --line-soft:  #f0f1f3;
  --bg:         #fbfbfa;
  --surface:    #ffffff;
  --tint:       #f3f6f7;
  --accent:     #2f6f7a;
  --accent-soft:#e6eef0;
  --accent-ink: #1f4a52;
  --warn:       #b15a3a;
  --radius:     4px;
  --radius-lg:  10px;
  --serif: 'Zen Old Mincho', 'Shippori Mincho', serif;
  --sans:  'Noto Sans JP', system-ui, sans-serif;
}
html { scroll-behavior: smooth; }
body {
  font-family: var(--sans);
  color: var(--ink);
  background: var(--bg);
  line-height: 1.85;
  font-size: 15px;
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* HEADER */
header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(251,251,250,0.92);
  backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
  padding: 0 7%; height: 72px;
  display: flex; align-items: center; justify-content: space-between;
}
.logo { display: flex; align-items: center; gap: 14px; text-decoration: none; }
.logo-mark {
  width: 36px; height: 36px;
  border: 1px solid var(--ink); border-radius: 50%;
  display: flex; align-items: center; justify-content: center; flex-shrink: 0;
}
.logo-mark svg { width: 16px; height: 16px; }
.logo-name { font-family: var(--serif); font-size: 18px; font-weight: 600; color: var(--ink); letter-spacing: 0.08em; line-height: 1.1; }
.logo-sub { font-size: 10px; color: var(--ink-mute); letter-spacing: 0.12em; margin-top: 3px; }
nav { display: flex; align-items: center; gap: 4px; }
nav a { font-size: 13px; color: var(--ink-soft); text-decoration: none; padding: 8px 14px; font-weight: 500; transition: color 0.2s; letter-spacing: 0.04em; }
nav a:hover, nav a.active { color: var(--accent); }
.nav-tel {
  border: 1px solid var(--ink) !important; color: var(--ink) !important;
  padding: 9px 18px !important; border-radius: 100px !important;
  font-size: 12px !important; font-weight: 600 !important; letter-spacing: 0.06em !important;
  display: inline-flex; align-items: center; gap: 8px; margin-left: 8px;
  transition: all 0.2s !important;
}
.nav-tel:hover { background: var(--ink) !important; color: white !important; }

/* PAGE HERO */
.page-hero {
  background: var(--bg);
  padding: 80px 7% 64px;
  border-bottom: 1px solid var(--line);
}
.page-hero-inner { max-width: 1200px; margin: 0 auto; }
.breadcrumb { font-size: 11px; color: var(--ink-mute); margin-bottom: 28px; letter-spacing: 0.08em; }
.breadcrumb a { color: var(--ink-soft); text-decoration: none; }
.breadcrumb a:hover { color: var(--accent); }
.page-hero .eyebrow {
  font-size: 11px; font-weight: 500; letter-spacing: 0.25em; color: var(--accent);
  text-transform: uppercase; margin-bottom: 18px;
  display: inline-flex; align-items: center; gap: 12px;
}
.page-hero .eyebrow::before { content:''; display:block; width:24px; height:1px; background: var(--accent); }
.page-hero h1 { font-family: var(--serif); font-size: clamp(28px, 4.4vw, 44px); font-weight: 500; color: var(--ink); margin-bottom: 16px; letter-spacing: 0.05em; line-height: 1.45; }
.page-hero p { font-size: 14px; color: var(--ink-soft); line-height: 2; max-width: 600px; }

/* SECTION COMMON */
section { padding: 96px 7%; }
.sec-inner { max-width: 1200px; margin: 0 auto; }
.sec-head { margin-bottom: 56px; max-width: 640px; }
.sec-label {
  font-size: 11px; font-weight: 500; letter-spacing: 0.25em; text-transform: uppercase;
  color: var(--accent); margin-bottom: 18px;
  display: inline-flex; align-items: center; gap: 12px;
}
.sec-label::before { content:''; display:block; width:24px; height:1px; background: var(--accent); }
.sec-title { font-family: var(--serif); font-size: clamp(24px, 3.4vw, 34px); font-weight: 500; color: var(--ink); line-height: 1.55; margin-bottom: 20px; letter-spacing: 0.05em; }
.sec-desc { font-size: 14px; color: var(--ink-soft); line-height: 2; max-width: 560px; }

/* CTA BAR */
.cta-bar {
  background: var(--bg);
  border-top: 1px solid var(--line);
  padding: 96px 7%; text-align: center;
}
.cta-bar-inner { max-width: 720px; margin: 0 auto; }
.cta-bar h2 { font-family: var(--serif); font-size: clamp(24px, 3.4vw, 34px); font-weight: 500; color: var(--ink); margin-bottom: 18px; letter-spacing: 0.06em; line-height: 1.55; }
.cta-bar p { font-size: 14px; color: var(--ink-soft); margin-bottom: 40px; line-height: 2; }
.cta-btns { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }
.btn-dark {
  background: var(--ink); color: white;
  padding: 16px 32px; border-radius: 100px;
  font-weight: 500; font-size: 14px; text-decoration: none;
  display: inline-flex; align-items: center; gap: 10px;
  transition: all 0.2s; letter-spacing: 0.05em;
}
.btn-dark:hover { background: var(--accent); }
.btn-outline {
  border: 1px solid var(--ink); color: var(--ink);
  padding: 16px 32px; border-radius: 100px;
  font-weight: 500; font-size: 14px; text-decoration: none;
  display: inline-flex; align-items: center; gap: 10px;
  transition: all 0.2s; letter-spacing: 0.05em;
  background: transparent;
}
.btn-outline:hover { background: var(--ink); color: white; }

/* FOOTER */
footer { background: var(--surface); color: var(--ink-soft); padding: 64px 7% 36px; border-top: 1px solid var(--line); font-size: 12px; }
.footer-inner { max-width: 1200px; margin: 0 auto; }
.footer-top { display: grid; grid-template-columns: 1fr auto; gap: 40px; padding-bottom: 40px; border-bottom: 1px solid var(--line); margin-bottom: 28px; }
.footer-brand .logo-name { font-size: 20px; }
.footer-brand .logo-sub { margin-top: 6px; }
.footer-brand p { margin-top: 18px; line-height: 1.9; color: var(--ink-soft); font-size: 12px; }
.footer-links { display: flex; gap: 28px; flex-wrap: wrap; align-items: flex-start; }
.footer-links a { color: var(--ink); text-decoration: none; font-size: 12px; letter-spacing: 0.06em; }
.footer-links a:hover { color: var(--accent); }
.footer-bottom { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 12px; color: var(--ink-mute); font-size: 11px; letter-spacing: 0.06em; }

/* HAMBURGER */
.hamburger { display: none; flex-direction: column; justify-content: center; align-items: center; width: 40px; height: 40px; gap: 5px; background: none; border: none; cursor: pointer; padding: 4px; margin-left: 8px; }
.hamburger span { display: block; width: 22px; height: 1px; background: var(--ink); transition: all 0.3s; }
.hamburger.open span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }
.mobile-menu { display: none; position: fixed; top: 64px; left: 0; right: 0; background: var(--surface); border-bottom: 1px solid var(--line); z-index: 99; padding: 8px 0; }
.mobile-menu.open { display: block; }
.mobile-menu a { display: block; padding: 16px 5%; font-size: 15px; font-weight: 500; color: var(--ink); text-decoration: none; border-bottom: 1px solid var(--line-soft); letter-spacing: 0.04em; }
.mobile-menu a:last-child { border-bottom: none; }
.mobile-menu a:hover { color: var(--accent); }
.mobile-menu .menu-tel { display: flex; align-items: center; gap: 10px; background: var(--ink); color: white !important; margin: 12px 5%; border-radius: 100px; padding: 14px 22px !important; border-bottom: none !important; justify-content: center; font-weight: 500 !important; letter-spacing: 0.06em; }

@media (max-width: 640px) {
  header { padding: 0 5%; height: 64px; }
  nav a:not(.nav-tel) { display: none; }
  .nav-tel { display: none !important; }
  .hamburger { display: flex; }
  section { padding: 64px 5%; }
  .page-hero { padding: 48px 5% 40px; }
  .sec-head { margin-bottom: 40px; }
  .footer-top { grid-template-columns: 1fr; }
  .cta-bar { padding: 72px 5%; }
}