/* =============================================
   B案: 現代的・洗練（チャコール×テールブルー）
   アクシアホールディングス株式会社
   ============================================= */

@import url('https://fonts.googleapis.com/css2?family=Noto+Serif+JP:wght@400;500;700&family=Noto+Sans+JP:wght@300;400;500;700&display=swap');

:root {
  --color-primary: #2C2C2C;
  --color-accent: #1A8C9C;
  --color-accent-light: #22AAC0;
  --color-text: #2C2C2C;
  --color-text-muted: #707070;
  --color-bg: #FFFFFF;
  --color-bg-section: #F8F8F8;
  --color-border: #E0E0E0;
  --color-footer-bg: #1A1A1A;
  --font-serif: 'Noto Serif JP', serif;
  --font-sans: 'Noto Sans JP', sans-serif;
  --radius: 2px;
  --shadow-card: 0 8px 32px rgba(0,0,0,0.08);
  --transition: 0.3s ease;
  --container: 1140px;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-sans);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
}

img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 40px;
}

/* ---- Reveal ---- */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.8s cubic-bezier(0.16,1,0.3,1), transform 0.8s cubic-bezier(0.16,1,0.3,1);
}
.reveal.visible { opacity: 1; transform: translateY(0); }
.reveal-delay-1 { transition-delay: 0.12s; }
.reveal-delay-2 { transition-delay: 0.24s; }
.reveal-delay-3 { transition-delay: 0.36s; }

/* ---- Section Heads ---- */
.section-eyebrow {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
}
.section-eyebrow::before {
  content: '';
  display: block;
  width: 32px; height: 2px;
  background: var(--color-accent);
  flex-shrink: 0;
}
.section-eyebrow span {
  font-size: 11px;
  letter-spacing: 0.22em;
  color: var(--color-accent);
  text-transform: uppercase;
  font-weight: 500;
}
.section-title {
  font-family: var(--font-serif);
  font-size: clamp(24px, 3vw, 36px);
  font-weight: 700;
  color: var(--color-primary);
  line-height: 1.5;
  margin-bottom: 20px;
}
.section-desc {
  font-size: 15px;
  color: var(--color-text-muted);
  line-height: 2;
  max-width: 600px;
}
.section-header { margin-bottom: 64px; }
.section-header.center { text-align: center; }
.section-header.center .section-eyebrow { justify-content: center; }
.section-header.center .section-desc { margin: 0 auto; }

/* ============================================================
   HEADER
   ============================================================ */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition), box-shadow var(--transition);
}
.site-header.scrolled {
  border-bottom-color: var(--color-border);
  box-shadow: 0 1px 16px rgba(0,0,0,0.06);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 40px;
}
.logo {
  display: flex;
  align-items: baseline;
  gap: 10px;
}
.logo-main {
  font-family: var(--font-serif);
  font-size: 20px;
  font-weight: 700;
  color: var(--color-primary);
  letter-spacing: 0.02em;
  line-height: 1;
}
.logo-dot {
  display: inline-block;
  width: 6px; height: 6px;
  background: var(--color-accent);
  border-radius: 50%;
  vertical-align: middle;
  margin: 0 2px;
}
.logo-sub {
  font-size: 11px;
  color: var(--color-text-muted);
  letter-spacing: 0.06em;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 40px;
}
.nav-links a {
  font-size: 13px;
  color: var(--color-text-muted);
  letter-spacing: 0.04em;
  transition: color var(--transition);
  font-weight: 400;
}
.nav-links a:hover { color: var(--color-primary); }

.nav-cta {
  font-size: 13px;
  font-weight: 500;
  color: #fff;
  background: var(--color-accent);
  padding: 10px 22px;
  border-radius: 24px;
  transition: background var(--transition), transform var(--transition);
  letter-spacing: 0.04em;
  white-space: nowrap;
}
.nav-cta:hover {
  background: var(--color-accent-light);
  color: #fff;
  transform: translateY(-1px);
}

.burger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 36px; height: 36px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.burger span {
  display: block;
  width: 24px; height: 1.5px;
  background: var(--color-primary);
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
}
.burger[aria-expanded="true"] span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.burger[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.burger[aria-expanded="true"] span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

/* ============================================================
   HERO
   ============================================================ */
.hero {
  position: relative;
  height: 100vh;
  min-height: 680px;
  display: flex;
  align-items: flex-end;
  padding-bottom: 80px;
  overflow: hidden;
}
.hero-bg {
  position: absolute;
  inset: 0;
  background-image: url('https://images.pexels.com/photos/1181406/pexels-photo-1181406.jpeg?auto=compress&cs=tinysrgb&w=1920&h=1080&fit=crop');
  background-size: cover;
  background-position: center top;
}
.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to bottom,
    rgba(28,28,28,0.1) 0%,
    rgba(28,28,28,0.3) 40%,
    rgba(28,28,28,0.75) 100%
  );
}
.hero-content {
  position: relative;
  z-index: 2;
  max-width: var(--container);
  width: 100%;
  margin: 0 auto;
  padding: 0 40px;
}
.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 32px;
  color: rgba(255,255,255,0.75);
  font-size: 11px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
}
.hero-tag::before {
  content: '';
  display: block;
  width: 20px; height: 1px;
  background: var(--color-accent);
}
.hero-title {
  font-family: var(--font-serif);
  font-size: clamp(30px, 4.5vw, 56px);
  font-weight: 700;
  color: #fff;
  line-height: 1.4;
  margin-bottom: 20px;
  letter-spacing: 0.01em;
}
.hero-sub {
  font-size: clamp(14px, 1.4vw, 17px);
  color: rgba(255,255,255,0.8);
  line-height: 2;
  max-width: 520px;
  margin-bottom: 48px;
}
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 16px 36px;
  background: var(--color-accent);
  color: #fff;
  font-size: 14px;
  font-weight: 500;
  border-radius: 2px;
  letter-spacing: 0.06em;
  transition: background var(--transition), transform var(--transition);
}
.btn-primary:hover { background: var(--color-accent-light); transform: translateY(-2px); }
.btn-outline {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 15px 32px;
  border: 1px solid rgba(255,255,255,0.5);
  color: #fff;
  font-size: 14px;
  font-weight: 500;
  border-radius: 2px;
  letter-spacing: 0.06em;
  transition: border-color var(--transition), background var(--transition);
}
.btn-outline:hover { border-color: #fff; background: rgba(255,255,255,0.08); }
.hero-cta-wrap { display: flex; gap: 16px; flex-wrap: wrap; }

.hero-scroll {
  position: absolute;
  right: 40px; bottom: 80px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: rgba(255,255,255,0.5);
  font-size: 9px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  z-index: 2;
  writing-mode: vertical-rl;
}
.hero-scroll-bar {
  width: 1px; height: 40px;
  background: rgba(255,255,255,0.25);
  position: relative;
  overflow: hidden;
  writing-mode: horizontal-tb;
}
.hero-scroll-bar::after {
  content: '';
  position: absolute;
  top: -100%; left: 0;
  width: 100%; height: 100%;
  background: var(--color-accent);
  animation: scrollBar 2s ease infinite;
}
@keyframes scrollBar { to { top: 200%; } }

/* ============================================================
   VISION / ABOUT
   ============================================================ */
.vision {
  padding: 140px 0;
  background: var(--color-bg);
}
.vision-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 100px;
  align-items: center;
}
.vision-text-wrap .section-desc { font-size: 15px; line-height: 2.1; margin-bottom: 16px; max-width: none; }
.vision-highlight {
  font-family: var(--font-serif);
  font-size: clamp(16px, 1.8vw, 20px);
  color: var(--color-primary);
  line-height: 1.8;
  border-left: 3px solid var(--color-accent);
  padding: 16px 24px;
  margin: 32px 0;
  background: var(--color-bg-section);
}
.vision-img-wrap {
  position: relative;
}
.vision-img-main {
  width: 100%;
  height: 480px;
  object-fit: cover;
}
.vision-img-accent {
  position: absolute;
  bottom: -28px; right: -28px;
  width: 48%;
  height: 200px;
  object-fit: cover;
  border: 6px solid var(--color-bg);
  box-shadow: var(--shadow-card);
}

/* ============================================================
   BUSINESS
   ============================================================ */
.business {
  padding: 120px 0;
  background: var(--color-bg-section);
}
.business-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2px;
  background: var(--color-border);
}
.biz-card {
  background: var(--color-bg);
  padding: 52px 44px;
  position: relative;
  overflow: hidden;
  transition: background var(--transition);
  cursor: default;
}
.biz-card:hover { background: #FAFAFA; }
.biz-num {
  font-size: 72px;
  font-weight: 700;
  color: rgba(0,0,0,0.04);
  line-height: 1;
  margin-bottom: 24px;
  font-family: var(--font-sans);
  letter-spacing: -0.04em;
  pointer-events: none;
  user-select: none;
}
.biz-accent-line {
  width: 32px; height: 3px;
  background: var(--color-accent);
  margin-bottom: 20px;
  transition: width var(--transition);
}
.biz-card:hover .biz-accent-line { width: 56px; }
.biz-name {
  font-family: var(--font-serif);
  font-size: 20px;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 16px;
  line-height: 1.4;
}
.biz-desc {
  font-size: 14px;
  color: var(--color-text-muted);
  line-height: 2;
  margin-bottom: 24px;
}
.biz-company {
  font-size: 12px;
  color: var(--color-text-muted);
  letter-spacing: 0.04em;
  display: flex;
  align-items: center;
  gap: 8px;
}
.biz-company::before {
  content: '';
  display: inline-block;
  width: 16px; height: 1px;
  background: var(--color-accent);
}

/* ============================================================
   NUMBERS
   ============================================================ */
.numbers {
  padding: 120px 0;
  background: var(--color-bg);
}
.numbers-inner {
  display: grid;
  grid-template-columns: 380px 1fr;
  gap: 80px;
  align-items: center;
}
.numbers-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 40px;
}
.stat-item {
  padding: 0;
  border-bottom: 1px solid var(--color-border);
  padding-bottom: 32px;
}
.stat-label-top {
  font-size: 11px;
  color: var(--color-text-muted);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  margin-bottom: 12px;
}
.stat-number {
  font-size: clamp(40px, 5vw, 60px);
  font-weight: 700;
  color: var(--color-primary);
  line-height: 1;
  margin-bottom: 8px;
  font-family: var(--font-sans);
  letter-spacing: -0.02em;
}
.stat-number-accent { color: var(--color-accent); }
.stat-label {
  font-size: 13px;
  color: var(--color-text-muted);
}

/* ============================================================
   COMPANIES
   ============================================================ */
.companies {
  padding: 120px 0;
  background: var(--color-bg-section);
}
.companies-cards {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 16px;
}
.company-card {
  background: var(--color-bg);
  border-radius: var(--radius);
  padding: 28px 20px;
  border: 1px solid var(--color-border);
  transition: box-shadow var(--transition), transform var(--transition), border-color var(--transition);
  text-align: center;
}
.company-card:hover {
  box-shadow: var(--shadow-card);
  transform: translateY(-4px);
  border-color: var(--color-accent);
}
.company-card-icon {
  width: 48px; height: 48px;
  border-radius: 50%;
  background: var(--color-bg-section);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  margin: 0 auto 16px;
  border: 2px solid var(--color-border);
}
.company-card-name {
  font-size: 13px;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 8px;
  line-height: 1.5;
}
.company-card-biz {
  font-size: 12px;
  color: var(--color-text-muted);
  line-height: 1.7;
}
.company-card-tag {
  display: inline-block;
  margin-top: 12px;
  padding: 3px 10px;
  border-radius: 20px;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.04em;
}
.tag-hd { background: #F0EBF8; color: #6E3DAB; }
.tag-hr { background: #E6EEFA; color: #1A5CAB; }
.tag-re { background: #E6F4EB; color: #1E7A4A; }
.tag-fc { background: #FEF0E0; color: #C06A00; }
.tag-ls { background: #E8EFEF; color: #1A7080; }

/* ============================================================
   NEWS
   ============================================================ */
.news {
  padding: 120px 0;
  background: var(--color-bg);
}
.news-inner {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 80px;
  align-items: start;
}
.news-heading { position: sticky; top: 100px; }
.news-heading .section-title { margin-bottom: 24px; }
.btn-news-all {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--color-accent);
  font-weight: 500;
  letter-spacing: 0.04em;
  border-bottom: 1px solid var(--color-accent);
  padding-bottom: 2px;
  transition: gap var(--transition);
}
.btn-news-all:hover { gap: 14px; }

.news-list { display: flex; flex-direction: column; }
.news-item {
  display: grid;
  grid-template-columns: 120px auto 1fr;
  gap: 20px;
  align-items: center;
  padding: 28px 0;
  border-bottom: 1px solid var(--color-border);
  transition: background var(--transition);
}
.news-item:first-child { border-top: 1px solid var(--color-border); }
.news-date {
  font-size: 12px;
  color: var(--color-text-muted);
  letter-spacing: 0.06em;
}
.news-cat {
  display: inline-block;
  padding: 3px 12px;
  border: 1px solid var(--color-accent);
  border-radius: 2px;
  font-size: 10px;
  color: var(--color-accent);
  white-space: nowrap;
  letter-spacing: 0.04em;
}
.news-title {
  font-size: 14.5px;
  color: var(--color-text);
  line-height: 1.7;
  transition: color var(--transition);
}
.news-item:hover .news-title { color: var(--color-accent); }

/* ============================================================
   PHILOSOPHY
   ============================================================ */
.philosophy {
  padding: 140px 0;
  background: var(--color-primary);
}
.philosophy .section-eyebrow::before { background: var(--color-accent); }
.philosophy .section-eyebrow span { color: var(--color-accent); }
.philosophy .section-title { color: #fff; }
.philosophy-inner {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 1px;
  background: rgba(255,255,255,0.1);
  margin-top: 72px;
}
.phil-item {
  background: var(--color-primary);
  padding: 52px 40px;
  transition: background var(--transition);
}
.phil-item:hover { background: #363636; }
.phil-label {
  font-size: 10px;
  letter-spacing: 0.22em;
  color: var(--color-accent);
  text-transform: uppercase;
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.phil-label::before {
  content: '';
  display: block;
  width: 20px; height: 1px;
  background: var(--color-accent);
}
.phil-title {
  font-family: var(--font-serif);
  font-size: clamp(18px, 2vw, 22px);
  color: #fff;
  font-weight: 700;
  line-height: 1.7;
  margin-bottom: 20px;
}
.phil-text {
  font-size: 13.5px;
  color: rgba(255,255,255,0.65);
  line-height: 2;
}

/* ============================================================
   CTA
   ============================================================ */
.cta-section {
  padding: 120px 0;
  background: var(--color-bg);
  text-align: center;
}
.cta-section .section-header { margin-bottom: 48px; }
.btn-cta-main {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 20px 56px;
  background: var(--color-accent);
  color: #fff;
  font-size: 15px;
  font-weight: 500;
  border-radius: 2px;
  letter-spacing: 0.08em;
  transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
  box-shadow: 0 4px 20px rgba(26,140,156,0.25);
}
.btn-cta-main:hover {
  background: var(--color-accent-light);
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(26,140,156,0.35);
}

/* ============================================================
   FOOTER
   ============================================================ */
.site-footer {
  background: var(--color-footer-bg);
  padding: 80px 0 40px;
}
.footer-top {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 60px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
  margin-bottom: 40px;
}
.footer-brand-title {
  font-family: var(--font-serif);
  font-size: 18px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 4px;
}
.footer-brand-sub { font-size: 11px; color: rgba(255,255,255,0.4); margin-bottom: 20px; }
.footer-brand-desc { font-size: 13px; color: rgba(255,255,255,0.5); line-height: 1.9; }
.footer-address { font-style: normal; font-size: 12px; color: rgba(255,255,255,0.35); margin-top: 16px; line-height: 1.9; }
.footer-col-title { font-size: 11px; letter-spacing: 0.15em; color: rgba(255,255,255,0.4); text-transform: uppercase; margin-bottom: 20px; }
.footer-col ul { display: flex; flex-direction: column; gap: 12px; }
.footer-col a { font-size: 13px; color: rgba(255,255,255,0.6); transition: color var(--transition); }
.footer-col a:hover { color: #fff; }

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.footer-copy { font-size: 12px; color: rgba(255,255,255,0.3); letter-spacing: 0.04em; }
.footer-links { display: flex; gap: 24px; }
.footer-links a { font-size: 12px; color: rgba(255,255,255,0.3); transition: color var(--transition); }
.footer-links a:hover { color: rgba(255,255,255,0.7); }

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 768px) {
  .container { padding: 0 20px; }
  .header-inner { padding: 0 20px; }

  .burger { display: flex; }
  .nav-links {
    display: none;
    position: fixed;
    top: 76px; left: 0; right: 0; bottom: 0;
    background: rgba(26,26,26,0.97);
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 32px;
    z-index: 99;
  }
  .nav-links.open { display: flex; }
  .nav-links a { color: rgba(255,255,255,0.8); font-size: 18px; }
  .nav-cta { background: var(--color-accent); }

  .hero { align-items: flex-end; padding-bottom: 60px; }
  .hero-content { padding: 0 20px; }
  .hero-title { font-size: 28px; }
  .hero-scroll { right: 20px; bottom: 60px; }

  .vision { padding: 80px 0; }
  .vision-inner { grid-template-columns: 1fr; gap: 48px; }
  .vision-img-main { height: 280px; }
  .vision-img-accent { display: none; }

  .business { padding: 80px 0; }
  .business-grid { grid-template-columns: 1fr; gap: 2px; }

  .numbers { padding: 80px 0; }
  .numbers-inner { grid-template-columns: 1fr; gap: 48px; }
  .numbers-grid { grid-template-columns: repeat(2, 1fr); gap: 28px; }

  .companies { padding: 80px 0; }
  .companies-cards { grid-template-columns: repeat(2, 1fr); gap: 12px; }

  .news { padding: 80px 0; }
  .news-inner { grid-template-columns: 1fr; gap: 40px; }
  .news-heading { position: static; }
  .news-item { grid-template-columns: 1fr; gap: 8px; }

  .philosophy { padding: 80px 0; }
  .philosophy-inner { grid-template-columns: 1fr; gap: 2px; }

  .cta-section { padding: 80px 0; }

  .site-footer { padding: 52px 0 28px; }
  .footer-top { grid-template-columns: 1fr 1fr; gap: 36px; }
  .footer-bottom { flex-direction: column; gap: 16px; text-align: center; }
}
@media (max-width: 480px) {
  .companies-cards { grid-template-columns: 1fr; }
  .footer-top { grid-template-columns: 1fr; }
  .numbers-grid { grid-template-columns: 1fr; }
}