/* ===========================
   Keep Search — Corporate Site
   =========================== */

:root {
  --black:   #0a0a0a;
  --dark:    #111111;
  --dark-2:  #1a1a1a;
  --ink:     #1a1a1a;
  --muted:   #666666;
  --light:   #999999;
  --line:    #e8e8e8;
  --gray-bg: #f5f5f5;
  --white:   #ffffff;
  --orange:  #ff6200;
  --orange-2:#e55600;
  --orange-soft: rgba(255, 98, 0, 0.08);
}

/* ===== RESET & BASE ===== */

*, *::before, *::after {
  box-sizing: border-box;
}

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

body {
  margin: 0;
  background: var(--white);
  color: var(--ink);
  font-family: "Noto Sans JP", "Hiragino Sans", "Yu Gothic", system-ui, sans-serif;
  -webkit-font-smoothing: antialiased;
  line-height: 1.8;
}

a {
  color: inherit;
  text-decoration: none;
}

img {
  max-width: 100%;
}

/* ===== HEADER ===== */

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(10, 10, 10, 0.95);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid rgba(255,255,255,0.06);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 32px;
  height: 68px;
}

.logo {
  font-family: "Inter", "Noto Sans JP", sans-serif;
  font-size: 18px;
  font-weight: 900;
  letter-spacing: .04em;
  color: var(--white);
  text-transform: uppercase;
}

.gnav {
  display: flex;
  align-items: center;
  gap: 36px;
}

.gnav-item {
  color: rgba(255,255,255,0.72);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .14em;
  text-transform: uppercase;
  transition: color 0.2s;
}

.gnav-item:hover {
  color: var(--white);
}

.gnav-cta {
  padding: 9px 22px;
  background: var(--orange);
  color: var(--white) !important;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .1em;
}

.gnav-cta:hover {
  background: var(--orange-2);
}

/* ===== 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(--white);
  transition: all 0.3s;
}

/* ===== MOBILE MENU ===== */

.mobile-menu {
  display: none;
  position: fixed;
  top: 68px;
  left: 0;
  right: 0;
  z-index: 99;
  background: var(--dark);
  flex-direction: column;
  padding: 16px 0 24px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}

.mobile-menu.open {
  display: flex;
}

.mobile-menu-item {
  padding: 14px 32px;
  color: rgba(255,255,255,0.8);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .14em;
  text-transform: uppercase;
  border-bottom: 1px solid rgba(255,255,255,0.06);
}

.mobile-menu-item:last-child {
  border-bottom: none;
}

/* ===== HERO ===== */

.hero {
  position: relative;
  min-height: 100vh;
  background: var(--black);
  display: flex;
  align-items: center;
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 80% 20%, rgba(255, 98, 0, 0.12) 0%, transparent 60%),
    radial-gradient(ellipse at 10% 80%, rgba(255, 98, 0, 0.06) 0%, transparent 50%);
  pointer-events: none;
}

.hero-inner {
  position: relative;
  z-index: 1;
  max-width: 1200px;
  width: 100%;
  margin: 0 auto;
  padding: 120px 32px 80px;
}

.hero-label {
  margin: 0 0 28px;
  color: var(--orange);
  font-family: "Inter", sans-serif;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .3em;
  text-transform: uppercase;
}

.hero-title {
  margin: 0 0 32px;
  color: var(--white);
  font-size: clamp(52px, 8vw, 96px);
  font-weight: 900;
  line-height: 1.1;
  letter-spacing: -.02em;
}

.hero-title em {
  font-style: normal;
  color: var(--orange);
}

.hero-sub {
  max-width: 580px;
  margin: 0 0 48px;
  color: rgba(255,255,255,0.6);
  font-size: 15px;
  font-weight: 400;
  line-height: 2;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

/* ===== SCROLL INDICATOR ===== */

.hero-scroll {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  z-index: 1;
}

.scroll-line {
  display: block;
  width: 1px;
  height: 48px;
  background: linear-gradient(to bottom, transparent, rgba(255,255,255,0.4));
  animation: scrollDown 1.8s ease-in-out infinite;
}

.scroll-text {
  color: rgba(255,255,255,0.35);
  font-family: "Inter", sans-serif;
  font-size: 9px;
  font-weight: 700;
  letter-spacing: .24em;
  text-transform: uppercase;
}

@keyframes scrollDown {
  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; }
}

/* ===== BUTTONS ===== */

.btn-primary,
.btn-ghost,
.btn-outline {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 52px;
  padding: 0 32px;
  font-family: "Noto Sans JP", sans-serif;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: .06em;
  cursor: pointer;
  transition: all 0.2s;
  text-decoration: none;
}

.btn-primary {
  background: var(--orange);
  color: var(--white);
  border: 2px solid var(--orange);
}

.btn-primary:hover {
  background: var(--orange-2);
  border-color: var(--orange-2);
}

.btn-ghost {
  background: transparent;
  color: rgba(255,255,255,0.8);
  border: 2px solid rgba(255,255,255,0.28);
}

.btn-ghost:hover {
  border-color: rgba(255,255,255,0.6);
  color: var(--white);
}

.btn-outline {
  background: transparent;
  color: var(--orange);
  border: 2px solid var(--orange);
}

.btn-outline:hover {
  background: var(--orange);
  color: var(--white);
}

/* ===== SECTIONS ===== */

.section {
  padding: 100px clamp(20px, 5vw, 60px);
}

.bg-white  { background: var(--white); }
.bg-gray   { background: var(--gray-bg); }
.bg-dark   { background: var(--dark); }

.container {
  max-width: 1200px;
  margin: 0 auto;
}

/* ===== SECTION LABELS & TITLES ===== */

.section-label {
  margin: 0 0 14px;
  color: var(--orange);
  font-family: "Inter", sans-serif;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .28em;
  text-transform: uppercase;
}

.section-label.light {
  color: rgba(255, 98, 0, 0.85);
}

.section-title {
  margin: 0 0 24px;
  color: var(--ink);
  font-size: clamp(28px, 4vw, 44px);
  font-weight: 900;
  line-height: 1.25;
  letter-spacing: -.01em;
}

.section-title.light {
  color: var(--white);
}

.section-body {
  max-width: 680px;
  margin: 0 0 56px;
  color: var(--muted);
  font-size: 15px;
  line-height: 2;
}

.section-body.light {
  color: rgba(255,255,255,0.6);
}

/* ===== VMV ===== */

.vmv-grid {
  display: grid;
  grid-template-columns: 1fr 1fr 1.4fr;
  gap: 2px;
  margin-top: 8px;
}

.vmv-card {
  padding: 36px 32px;
  background: var(--gray-bg);
}

.vmv-card.vmv-value {
  background: var(--ink);
}

.vmv-en {
  margin-bottom: 16px;
  color: var(--orange);
  font-family: "Inter", sans-serif;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .22em;
  text-transform: uppercase;
}

.vmv-ja {
  margin: 0;
  color: var(--ink);
  font-size: 20px;
  font-weight: 900;
  line-height: 1.5;
}

.vmv-value .vmv-en {
  color: var(--orange);
}

.value-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.value-list li {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding-left: 16px;
  border-left: 2px solid var(--orange);
}

.value-list strong {
  color: var(--white);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .06em;
}

.value-list span {
  color: rgba(255,255,255,0.55);
  font-size: 12px;
  line-height: 1.6;
}

/* ===== NUMBERS ===== */

.numbers-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: rgba(255,255,255,0.08);
  margin-top: 16px;
}

.number-item {
  padding: 40px 28px;
  background: var(--dark);
  text-align: center;
}

.number-value {
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: 4px;
  margin-bottom: 12px;
  color: var(--orange);
  font-family: "Inter", sans-serif;
  font-weight: 900;
  line-height: 1;
}

.number-value .num {
  font-size: 60px;
}

.number-value .unit {
  font-size: 26px;
}

.number-label {
  color: var(--white);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .04em;
  margin-bottom: 8px;
}

.number-desc {
  color: rgba(255,255,255,0.45);
  font-size: 11px;
  line-height: 1.6;
}

/* ===== BUSINESS ===== */

.biz-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2px;
}

.biz-card {
  padding: 36px 32px;
  background: var(--white);
  display: flex;
  flex-direction: column;
  transition: background 0.2s;
}

.biz-card:hover {
  background: var(--orange-soft);
}

.biz-num {
  color: var(--orange);
  font-family: "Inter", sans-serif;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .18em;
  margin-bottom: 14px;
}

.biz-title {
  margin: 0 0 4px;
  color: var(--ink);
  font-size: 22px;
  font-weight: 900;
}

.biz-sub {
  margin: 0 0 16px;
  color: var(--orange);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .08em;
}

.biz-body {
  margin: 0 0 24px;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.9;
  flex: 1;
}

.biz-link {
  color: var(--ink);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .04em;
  align-self: flex-start;
  border-bottom: 1px solid var(--ink);
  padding-bottom: 2px;
}

.biz-link:hover {
  color: var(--orange);
  border-color: var(--orange);
}

/* ===== WORKL ===== */

.workl-badge-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 48px;
}

.workl-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 18px;
  background: var(--orange-soft);
  color: var(--orange);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .06em;
  border: 1px solid rgba(255,98,0,0.2);
}

.badge-icon {
  font-size: 14px;
}

.workl-features {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2px;
  margin-bottom: 48px;
}

.wf-item {
  padding: 32px 28px;
  background: var(--gray-bg);
  border-left: 3px solid transparent;
  transition: border-color 0.2s;
}

.wf-item:hover {
  border-left-color: var(--orange);
}

.wf-icon {
  font-size: 28px;
  margin-bottom: 14px;
}

.wf-item h3 {
  margin: 0 0 10px;
  color: var(--ink);
  font-size: 17px;
  font-weight: 900;
}

.wf-item p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.9;
}

.workl-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

/* ===== HISTORY ===== */

.history-list {
  display: flex;
  flex-direction: column;
  gap: 0;
  max-width: 800px;
}

.history-item {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 24px;
  padding: 22px 0;
  border-bottom: 1px solid var(--line);
  align-items: baseline;
}

.history-item:first-child {
  border-top: 1px solid var(--line);
}

.history-year {
  color: var(--orange);
  font-family: "Inter", sans-serif;
  font-size: 20px;
  font-weight: 900;
  letter-spacing: -.01em;
}

.history-year span {
  font-size: 13px;
  font-weight: 400;
  color: var(--light);
}

.history-event {
  color: var(--ink);
  font-size: 15px;
  font-weight: 500;
  line-height: 1.6;
}

/* ===== GROUP ===== */

.group-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2px;
}

.group-card {
  padding: 36px 32px;
  background: var(--gray-bg);
  border-top: 3px solid var(--orange);
}

.group-year {
  margin-bottom: 10px;
  color: var(--orange);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .1em;
}

.group-card h3 {
  margin: 0 0 12px;
  color: var(--ink);
  font-size: 20px;
  font-weight: 900;
}

.group-card p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.9;
}

/* ===== RECRUIT ===== */

.recruit-section .section-body {
  margin-bottom: 36px;
}

/* ===== CONTACT ===== */

.contact-inner {
  text-align: center;
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2px;
  max-width: 800px;
  margin: 0 auto;
  text-align: left;
}

.contact-tel,
.contact-mail {
  padding: 36px 32px;
  background: var(--gray-bg);
}

.contact-type {
  margin-bottom: 12px;
  color: var(--orange);
  font-family: "Inter", sans-serif;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .22em;
}

.tel-number {
  display: block;
  margin-bottom: 8px;
  color: var(--ink);
  font-family: "Inter", sans-serif;
  font-size: 32px;
  font-weight: 900;
  letter-spacing: -.01em;
}

.tel-hours {
  color: var(--muted);
  font-size: 12px;
  line-height: 1.6;
}

.mail-address {
  display: block;
  margin-bottom: 24px;
  color: var(--ink);
  font-family: "Inter", sans-serif;
  font-size: 18px;
  font-weight: 700;
}

.contact-btn {
  display: inline-flex;
}

/* ===== FOOTER ===== */

.site-footer {
  background: var(--black);
  border-top: 1px solid rgba(255,255,255,0.06);
}

.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 56px 32px 40px;
  display: grid;
  grid-template-columns: 1.2fr 1.2fr 1fr;
  gap: 40px;
}

.footer-brand .logo {
  display: block;
  margin-bottom: 12px;
  font-size: 20px;
}

.footer-tagline {
  color: rgba(255,255,255,0.4);
  font-size: 13px;
  margin: 0;
  line-height: 1.8;
}

.footer-info p {
  color: rgba(255,255,255,0.45);
  font-size: 12px;
  line-height: 1.9;
  margin: 0 0 8px;
}

.footer-nav {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-nav a {
  color: rgba(255,255,255,0.45);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .14em;
  text-transform: uppercase;
  transition: color 0.2s;
}

.footer-nav a:hover {
  color: var(--white);
}

.footer-bottom {
  max-width: 1200px;
  margin: 0 auto;
  padding: 20px 32px;
  border-top: 1px solid rgba(255,255,255,0.06);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer-bottom span {
  color: rgba(255,255,255,0.3);
  font-size: 11px;
}

.footer-bottom a {
  color: rgba(255,255,255,0.4);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .06em;
  transition: color 0.2s;
}

.footer-bottom a:hover {
  color: var(--white);
}

/* ===== TO TOP ===== */

.to-top {
  position: fixed;
  bottom: 28px;
  right: 28px;
  width: 48px;
  height: 48px;
  background: var(--orange);
  color: var(--white);
  border: none;
  cursor: pointer;
  font-size: 18px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s, background 0.2s;
  z-index: 90;
}

.to-top.visible {
  opacity: 1;
  pointer-events: auto;
}

.to-top:hover {
  background: var(--orange-2);
}

/* ===== FADE-IN ANIMATION ===== */

.section {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.section.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ===== RESPONSIVE ===== */

@media (max-width: 1024px) {
  .vmv-grid {
    grid-template-columns: 1fr 1fr;
  }

  .vmv-value {
    grid-column: 1 / -1;
  }

  .numbers-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .footer-inner {
    grid-template-columns: 1fr 1fr;
  }

  .footer-nav {
    grid-column: 1 / -1;
    flex-direction: row;
    flex-wrap: wrap;
    gap: 20px;
  }
}

@media (max-width: 768px) {
  .gnav {
    display: none;
  }

  .hamburger {
    display: flex;
  }

  .hero-title {
    font-size: clamp(42px, 12vw, 72px);
  }

  .vmv-grid,
  .biz-grid,
  .workl-features,
  .group-grid,
  .contact-grid {
    grid-template-columns: 1fr;
  }

  .vmv-value {
    grid-column: auto;
  }

  .numbers-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .history-item {
    grid-template-columns: 90px 1fr;
  }

  .footer-inner {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .footer-nav {
    grid-column: auto;
    flex-direction: column;
    gap: 10px;
  }

  .footer-bottom {
    flex-direction: column;
    gap: 8px;
    text-align: center;
  }

  .section {
    padding: 64px 20px;
  }

  .hero-actions {
    flex-direction: column;
  }

  .btn-primary,
  .btn-ghost,
  .btn-outline {
    width: 100%;
    justify-content: center;
  }

  .workl-cta {
    flex-direction: column;
  }
}

@media (max-width: 480px) {
  .numbers-grid {
    grid-template-columns: 1fr;
  }

  .number-value .num {
    font-size: 52px;
  }
}