/* ============================
   Reset & Base
============================ */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --white: #ffffff;
  --off-white: #f7f6f4;
  --gray-light: #f0eeeb;
  --gray-mid: #d4d0ca;
  --gray-dark: #3a3830;
  --black: #111110;
  --accent: #b89060;
  --accent-dark: #8a6840;
  --text-dark: #111110;
  --text-mid: #4a4740;
  --text-light: #908c84;
  --border: #e0dcd4;
  --border-dark: #c0bbb2;
  --shadow: rgba(0, 0, 0, 0.1);
  --font-gothic: 'Noto Sans JP', sans-serif;
  --font-serif: 'Noto Serif JP', serif;
  --ease: cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-gothic);
  background: var(--white);
  color: var(--text-dark);
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a {
  color: inherit;
  text-decoration: none;
  transition: opacity 0.3s var(--ease);
}
a:hover { opacity: 0.6; }

ul { list-style: none; }
img { max-width: 100%; display: block; }

/* ============================
   Header
============================ */
#header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 100;
  transition: background 0.4s var(--ease), border-color 0.4s var(--ease);
  border-bottom: 1px solid transparent;
}

#header.scrolled {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom-color: var(--border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 1100px;
  margin: 0 auto;
  padding: 26px 48px;
  transition: padding 0.4s var(--ease);
}

#header.scrolled .header-inner {
  padding: 16px 48px;
}

.logo {
  font-family: var(--font-gothic);
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--black);
  text-transform: lowercase;
}
.logo-dot { color: var(--accent); }

.nav-list {
  display: flex;
  gap: 40px;
}

.nav-list a {
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  font-weight: 500;
  color: var(--text-mid);
  text-transform: uppercase;
  position: relative;
}
.nav-list a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--black);
  transition: width 0.35s var(--ease);
}
.nav-list a:hover { opacity: 1; color: var(--black); }
.nav-list a:hover::after { width: 100%; }

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--black);
  transition: transform 0.35s var(--ease), opacity 0.35s var(--ease);
}
.hamburger.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Mobile menu */
.mobile-menu {
  display: none;
  background: var(--white);
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.5s var(--ease);
  border-top: 1px solid transparent;
}
.mobile-menu.open {
  max-height: 360px;
  padding: 16px 0 32px;
  border-top-color: var(--border);
}
.mobile-menu ul { text-align: center; }
.mobile-menu li { padding: 13px 0; }
.mobile-menu a {
  font-size: 0.75rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  font-weight: 600;
  color: var(--text-dark);
}

/* ============================
   Hero
============================ */
.hero {
  position: relative;
  height: 100vh;
  min-height: 640px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background: var(--black);
}

.hero-bg {
  position: absolute;
  inset: 0;
  background-image: url('23856425_s.jpg');
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  opacity: 0.38;
}

.hero-content {
  position: relative;
  z-index: 1;
  text-align: center;
  padding: 0 32px;
}

.hero-sub {
  font-size: 0.68rem;
  letter-spacing: 0.38em;
  color: var(--accent);
  margin-bottom: 28px;
  font-weight: 500;
  text-transform: uppercase;
}

.hero-copy {
  font-family: var(--font-gothic);
  font-size: clamp(2.4rem, 6vw, 4rem);
  font-weight: 700;
  line-height: 1.45;
  letter-spacing: 0.06em;
  color: var(--white);
  margin-bottom: 28px;
}

.hero-desc {
  font-size: 0.82rem;
  color: rgba(255,255,255,0.5);
  letter-spacing: 0.1em;
  line-height: 2.2;
  font-weight: 300;
}

.scroll-indicator {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}
.scroll-indicator span {
  font-size: 0.58rem;
  letter-spacing: 0.3em;
  color: rgba(255,255,255,0.3);
  font-weight: 400;
  text-transform: uppercase;
}
.scroll-line {
  width: 1px;
  height: 44px;
  background: linear-gradient(to bottom, var(--accent), transparent);
  animation: scrollAnim 2.2s ease-in-out infinite;
}
@keyframes scrollAnim {
  0%   { transform: scaleY(0); transform-origin: top; }
  50%  { transform: scaleY(1); transform-origin: top; }
  51%  { transform: scaleY(1); transform-origin: bottom; }
  100% { transform: scaleY(0); transform-origin: bottom; }
}

/* ============================
   Section — common
============================ */
.section { padding: 136px 0; }

.section-inner {
  max-width: 960px;
  margin: 0 auto;
  padding: 0 48px;
}

.section-label {
  font-size: 0.6rem;
  letter-spacing: 0.42em;
  color: var(--accent);
  text-transform: uppercase;
  margin-bottom: 12px;
  font-weight: 600;
}

.section-title {
  font-family: var(--font-gothic);
  font-size: clamp(1.5rem, 3.2vw, 2rem);
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--text-dark);
  margin-bottom: 64px;
  padding-bottom: 20px;
  border-bottom: 2px solid var(--black);
  position: relative;
}

/* ============================
   About
============================ */
.about { background: var(--white); }

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 72px;
  align-items: start;
}

.about-text p {
  font-size: 0.86rem;
  color: var(--text-mid);
  line-height: 2.3;
  margin-bottom: 24px;
  font-weight: 400;
  letter-spacing: 0.04em;
}

.message-card {
  background: var(--off-white);
  border-left: 3px solid var(--black);
  padding: 40px 36px 36px;
  position: relative;
}
.message-card::before {
  content: '\201C';
  position: absolute;
  top: 10px;
  left: 22px;
  font-family: Georgia, serif;
  font-size: 3rem;
  color: var(--gray-mid);
  line-height: 1;
}

.message-text {
  font-size: 0.84rem;
  line-height: 2.3;
  color: var(--text-mid);
  margin-bottom: 24px;
  font-weight: 400;
  letter-spacing: 0.04em;
}

.message-name {
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  color: var(--text-dark);
  text-align: right;
  font-weight: 600;
}

/* ============================
   Service
============================ */
.service { background: var(--off-white); }

.service-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2px;
  background: var(--border-dark);
  border: 2px solid var(--border-dark);
}

.service-card {
  background: var(--white);
  padding: 52px 44px;
  position: relative;
  transition: background 0.35s var(--ease);
}
.service-card:hover {
  background: var(--off-white);
}

/* 3枚目は2カラムをまたいでフル幅 */
.service-card--wide {
  grid-column: 1 / -1;
}

.service-icon {
  width: 26px;
  height: 26px;
  color: var(--accent);
  margin-bottom: 24px;
}
.service-icon svg { width: 100%; height: 100%; }

.service-name {
  font-family: var(--font-gothic);
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  margin-bottom: 8px;
  color: var(--black);
}

.service-desc {
  font-size: 0.76rem;
  color: var(--text-light);
  margin-bottom: 24px;
  letter-spacing: 0.04em;
  font-weight: 400;
  line-height: 1.8;
}

.service-list {
  border-top: 1px solid var(--border);
  padding-top: 20px;
}
.service-list li {
  font-size: 0.8rem;
  color: var(--text-mid);
  padding: 9px 0 9px 18px;
  border-bottom: 1px solid var(--border);
  position: relative;
  letter-spacing: 0.03em;
  font-weight: 400;
  line-height: 1.7;
}
.service-list li:last-child { border-bottom: none; }
.service-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 8px;
  height: 2px;
  background: var(--accent);
}

/* リンクカード */
.service-card--link {
  display: flex;
  flex-direction: column;
  color: inherit;
  cursor: pointer;
}
.service-card--link:hover { opacity: 1; }

.service-more {
  display: inline-block;
  margin-top: auto;
  padding-top: 24px;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  color: var(--accent);
  text-transform: uppercase;
  transition: letter-spacing 0.3s var(--ease);
}
.service-card--link:hover .service-more {
  letter-spacing: 0.24em;
}

/* フル幅カードはリストを2列に */
.service-card--wide .service-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0 40px;
}
.service-card--wide .service-list li:nth-last-child(-n+2) {
  border-bottom: none;
}

/* ============================
   Company
============================ */
.company { background: var(--white); }

.company-table-wrap { overflow-x: auto; }

.company-table {
  width: 100%;
  border-collapse: collapse;
}

.company-table th,
.company-table td {
  padding: 20px 0;
  border-bottom: 1px solid var(--border);
  font-size: 0.84rem;
  vertical-align: top;
  line-height: 1.9;
}

.company-table tr:first-child th,
.company-table tr:first-child td {
  border-top: 2px solid var(--black);
}

.company-table th {
  width: 160px;
  min-width: 120px;
  color: var(--text-light);
  font-weight: 600;
  letter-spacing: 0.1em;
  padding-right: 40px;
  white-space: nowrap;
}

.company-table td {
  color: var(--text-mid);
  font-weight: 400;
  letter-spacing: 0.03em;
}

.company-table td a {
  color: var(--accent-dark);
  border-bottom: 1px solid var(--gray-mid);
  transition: border-color 0.3s var(--ease);
}
.company-table td a:hover {
  opacity: 1;
  border-color: var(--accent-dark);
}

/* ============================
   Contact
============================ */
.contact { background: var(--off-white); }

.contact-lead {
  font-size: 0.84rem;
  color: var(--text-light);
  margin-bottom: 56px;
  margin-top: -40px;
  letter-spacing: 0.06em;
  font-weight: 400;
}

.contact-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2px;
  background: var(--border-dark);
  border: 2px solid var(--border-dark);
}

.contact-card {
  background: var(--white);
  padding: 52px 32px 48px;
  text-align: center;
  display: block;
  transition: background 0.35s var(--ease);
}
.contact-card:hover {
  background: var(--black);
  opacity: 1;
}
.contact-card:hover .contact-icon { color: var(--accent); }
.contact-card:hover .contact-label { color: var(--accent); }
.contact-card:hover .contact-value { color: rgba(255,255,255,0.75); }

.contact-icon {
  width: 24px;
  height: 24px;
  color: var(--black);
  margin: 0 auto 20px;
  transition: color 0.35s var(--ease);
}
.contact-icon svg { width: 100%; height: 100%; }

.contact-label {
  font-size: 0.6rem;
  letter-spacing: 0.3em;
  color: var(--accent);
  margin-bottom: 12px;
  font-weight: 600;
  text-transform: uppercase;
  transition: color 0.35s var(--ease);
}

.contact-value {
  font-size: 0.8rem;
  color: var(--text-mid);
  line-height: 1.9;
  font-weight: 400;
  letter-spacing: 0.04em;
  transition: color 0.35s var(--ease);
}

/* ============================
   Footer
============================ */
.footer {
  background: var(--black);
  padding: 64px 48px;
  border-top: 3px solid var(--accent);
}

.footer-inner {
  max-width: 960px;
  margin: 0 auto;
  text-align: center;
}

.footer-logo {
  font-family: var(--font-gothic);
  font-size: 1rem;
  font-weight: 700;
  color: var(--white);
  letter-spacing: 0.16em;
  margin-bottom: 16px;
  text-transform: lowercase;
}
.footer-logo span { color: var(--accent); }

.footer-copy {
  font-size: 0.65rem;
  color: rgba(255,255,255,0.25);
  letter-spacing: 0.1em;
  font-weight: 300;
}

/* ============================
   Animations
============================ */
.fade-in {
  opacity: 0;
  transform: translateY(14px);
  animation: fadeUp 1s var(--ease) forwards;
}
.delay-1 { animation-delay: 0.22s; }
.delay-2 { animation-delay: 0.44s; }
.delay-3 { animation-delay: 0.8s; }

@keyframes fadeUp {
  to { opacity: 1; transform: translateY(0); }
}

.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.8s var(--ease), transform 0.8s var(--ease);
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}
.reveal.delay-1 { transition-delay: 0.12s; }
.reveal.delay-2 { transition-delay: 0.24s; }

/* ============================
   Utilities
============================ */
.sp-only { display: none; }

/* ============================
   Responsive
============================ */
@media (max-width: 768px) {
  .nav-list { display: none; }
  .hamburger { display: flex; }
  .mobile-menu { display: block; }

  .header-inner { padding: 18px 24px; }
  #header.scrolled .header-inner { padding: 12px 24px; }

  .section { padding: 88px 0; }
  .section-inner { padding: 0 24px; }
  .section-title { margin-bottom: 40px; }

  .sp-only { display: inline; }

  .about-grid { grid-template-columns: 1fr; gap: 40px; }

  .service-grid {
    grid-template-columns: 1fr;
  }
  .service-card--wide { grid-column: auto; }
  .service-card--wide .service-list { grid-template-columns: 1fr; }
  .service-card--wide .service-list li:nth-last-child(-n+2) {
    border-bottom: 1px solid var(--border);
  }
  .service-card--wide .service-list li:last-child { border-bottom: none; }

  .service-card { padding: 40px 28px; }

  .contact-grid { grid-template-columns: 1fr; }
  .contact-card { padding: 40px 24px 36px; }
  .contact-card:hover { background: var(--off-white); }
  .contact-card:hover .contact-value { color: var(--text-mid); }

  .company-table th {
    width: 90px;
    min-width: 90px;
    padding-right: 16px;
    font-size: 0.76rem;
  }
  .company-table td { font-size: 0.78rem; }

  .message-card { padding: 32px 24px 28px; }
}

@media (max-width: 480px) {
  .hero { min-height: 100svh; }
  .hero-copy { font-size: 2rem; }
  .footer { padding: 48px 24px; }
}