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

:root {
  --blue:     #003087;
  --blue-mid: #0050c8;
  --text:     #111111;
  --gray:     #888888;
  --border:   #e0e0e0;
  --light:    #f8f8f8;
  --white:    #ffffff;
  --transition: 0.4s ease;
}

html { scroll-behavior: smooth; }

body {
  font-family: 'fot-cezanne-pron', sans-serif;
  color: var(--text);
  line-height: 1.7;
  background: var(--white);
  font-size: 15px;
}

img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }

.container {
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 40px;
}

/* ===== Fade in ===== */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.fade-in.is-visible { opacity: 1; transform: none; }

/* ===== Header ===== */
.header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  height: 72px;
  display: flex;
  align-items: center;
  border-bottom: 1px solid rgba(255,255,255,0.12);
  transition: background var(--transition), border-color var(--transition);
}

.header.scrolled {
  background: var(--white);
  border-color: var(--border);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}

.header__logo {
  color: var(--white);
  transition: color var(--transition);
}
.header.scrolled .header__logo { color: var(--text); }

.header__logo-main {
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  line-height: 1.2;
}

.header__logo-sub {
  font-size: 0.6rem;
  font-weight: 400;
  letter-spacing: 0.15em;
  opacity: 0.6;
}

.nav__list {
  list-style: none;
  display: flex;
  gap: 40px;
}

.nav__list a {
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  color: rgba(255,255,255,0.8);
  transition: color var(--transition);
}
.header.scrolled .nav__list a { color: var(--text); }
.nav__list a:hover { color: var(--white); opacity: 1; }
.header.scrolled .nav__list a:hover { color: var(--blue); }

.header__cta {
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  color: var(--white);
  border: 1px solid rgba(255,255,255,0.5);
  border-radius: 6px;
  padding: 9px 24px;
  transition: var(--transition);
}
.header__cta:hover { background: var(--white); color: var(--blue); }
.header.scrolled .header__cta { color: var(--blue); border-color: var(--blue); }
.header.scrolled .header__cta:hover { background: var(--blue); color: var(--white); }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 6px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.nav-toggle span {
  display: block;
  width: 24px;
  height: 1.5px;
  background: var(--white);
  transition: var(--transition);
}
.header.scrolled .nav-toggle span { background: var(--text); }

/* ===== Hero ===== */
.hero {
  position: relative;
  height: 100svh;
  min-height: 600px;
  display: flex;
  align-items: flex-end;
  padding-bottom: 96px;
  background: var(--blue);
  overflow: hidden;
}

.hero__bg {
  position: absolute;
  inset: 0;
  background: linear-gradient(160deg, #001a52 0%, var(--blue) 60%, #0050c8 100%);
}

.hero__content {
  position: relative;
  z-index: 1;
  color: var(--white);
}

.hero__label {
  font-size: 0.7rem;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.5);
  margin-bottom: 32px;
  display: flex;
  align-items: center;
  gap: 16px;
}
.hero__label::before {
  content: '';
  display: block;
  width: 40px;
  height: 1px;
  background: rgba(255,255,255,0.4);
}

.hero__title {
  font-size: clamp(2.4rem, 5vw, 4rem);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.01em;
  margin-bottom: 32px;
}

.hero__title span {
  display: block;
  font-size: clamp(1rem, 2vw, 1.4rem);
  font-weight: 400;
  color: rgba(255,255,255,0.6);
  letter-spacing: 0.05em;
  margin-top: 12px;
}

.hero__scroll {
  position: absolute;
  right: 40px;
  bottom: 48px;
  z-index: 1;
  writing-mode: vertical-rl;
  font-size: 0.65rem;
  letter-spacing: 0.2em;
  color: rgba(255,255,255,0.4);
  display: flex;
  align-items: center;
  gap: 12px;
}
.hero__scroll::after {
  content: '';
  display: block;
  width: 1px;
  height: 60px;
  background: rgba(255,255,255,0.3);
  animation: scrollLine 2s ease-in-out infinite;
}
@keyframes scrollLine {
  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 base ===== */
.section { padding: 120px 0; }
.section--gray { background: var(--light); }
.section--blue { background: var(--blue); color: var(--white); }

.section__header {
  margin-bottom: 72px;
}

.section__en {
  font-size: 0.68rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--blue);
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 20px;
}
.section--blue .section__en { color: rgba(255,255,255,0.5); }
.section__en::before {
  content: '';
  display: block;
  width: 32px;
  height: 1px;
  background: currentColor;
}

.section__title {
  font-size: clamp(1.8rem, 3.5vw, 2.8rem);
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: -0.01em;
}

.section__lead {
  margin-top: 20px;
  color: var(--gray);
  font-size: 0.9rem;
  max-width: 520px;
  line-height: 1.9;
}
.section--blue .section__lead { color: rgba(255,255,255,0.65); }

/* ===== Service ===== */
.service-list {
  display: flex;
  flex-direction: column;
  border-top: 1px solid var(--border);
}

.service-item {
  display: grid;
  grid-template-columns: 80px 1fr auto;
  align-items: center;
  gap: 40px;
  padding: 40px 0;
  border-bottom: 1px solid var(--border);
  transition: background var(--transition);
  cursor: default;
}
.service-item:hover { background: var(--light); padding-left: 16px; padding-right: 16px; margin: 0 -16px; }

.service-item__num {
  font-size: 0.65rem;
  letter-spacing: 0.15em;
  color: var(--blue);
  font-weight: 700;
}

.service-item__title {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.service-item__text {
  font-size: 0.85rem;
  color: var(--gray);
  line-height: 1.8;
}

.service-item__icon {
  font-size: 2.4rem;
  opacity: 0.4;
}

/* ===== Numbers ===== */
.numbers-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: rgba(255,255,255,0.1);
  border: 1px solid rgba(255,255,255,0.1);
}

.number-item {
  padding: 56px 40px;
  background: var(--blue);
  text-align: center;
}

.number-item__value {
  font-size: clamp(2.8rem, 5vw, 4rem);
  font-weight: 700;
  color: var(--white);
  line-height: 1;
  margin-bottom: 4px;
}
.number-item__value sup {
  font-size: 1rem;
  vertical-align: super;
}

.number-item__label {
  font-size: 0.75rem;
  color: rgba(255,255,255,0.5);
  letter-spacing: 0.1em;
  margin-top: 12px;
}

/* ===== Service Photo Cards ===== */
.service-cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.service-photo-card {
  position: relative;
  aspect-ratio: 4/3;
  background-color: var(--blue);
  background-size: cover;
  background-position: center;
  overflow: hidden;
  display: block;
  border-radius: var(--radius, 8px);
}

.service-photo-card__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(0,20,70,0.9) 0%, rgba(0,20,70,0.3) 60%, transparent 100%);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 36px;
  transition: background var(--transition);
}

.service-photo-card:hover .service-photo-card__overlay {
  background: linear-gradient(to top, rgba(0,20,70,0.95) 0%, rgba(0,20,70,0.6) 100%);
}

.service-photo-card__num {
  font-size: 0.65rem;
  letter-spacing: 0.2em;
  color: rgba(255,255,255,0.5);
  margin-bottom: 10px;
}

.service-photo-card__title {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 12px;
  line-height: 1.4;
}

.service-photo-card__text {
  font-size: 0.82rem;
  color: rgba(255,255,255,0.7);
  line-height: 1.8;
}

@media (max-width: 600px) {
  .service-cards { grid-template-columns: 1fr; }
}

/* ===== Works ===== */
.works-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2px;
}

.work-item {
  position: relative;
  aspect-ratio: 4/3;
  background: var(--light);
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3rem;
}

.work-item__overlay {
  position: absolute;
  inset: 0;
  background: rgba(0, 48, 135, 0.85);
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: flex-end;
  padding: 28px;
  opacity: 0;
  transition: opacity var(--transition);
}
.work-item:hover .work-item__overlay { opacity: 1; }

.work-item__num {
  font-size: 0.65rem;
  letter-spacing: 0.15em;
  color: rgba(255,255,255,0.5);
  margin-bottom: 8px;
}
.work-item__label {
  color: var(--white);
  font-size: 0.95rem;
  font-weight: 700;
}

.section__more {
  margin-top: 56px;
  display: flex;
  align-items: center;
  gap: 16px;
}

/* ===== Recruit ===== */
.recruit-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

.recruit__text {
  font-size: 0.9rem;
  color: rgba(255,255,255,0.75);
  line-height: 1.95;
  margin-top: 32px;
  margin-bottom: 40px;
}

.recruit__visual {
  aspect-ratio: 4/3;
  background: var(--light);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 5rem;
  border: 1px solid var(--border);
}

/* ===== Contact ===== */
.contact-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: start;
  padding: 80px 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.contact__tel {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  color: var(--blue);
  display: block;
  margin: 16px 0 4px;
  letter-spacing: -0.02em;
}

.contact__hours {
  font-size: 0.78rem;
  color: var(--gray);
  letter-spacing: 0.05em;
}

.contact__form-note {
  font-size: 0.85rem;
  color: var(--gray);
  line-height: 1.9;
  margin-top: 20px;
  margin-bottom: 32px;
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-size: 0.78rem;
  letter-spacing: 0.1em;
  font-weight: 700;
  padding: 14px 32px;
  border-radius: 9999px;
  transition: var(--transition);
  cursor: pointer;
  border: none;
}

.btn::after {
  content: '→';
  font-weight: 400;
  transition: transform var(--transition);
}
.btn:hover::after { transform: translateX(4px); }

.btn--primary {
  background: var(--blue);
  color: var(--white);
}
.btn--primary:hover { background: var(--blue-mid); }

.btn--outline {
  background: transparent;
  color: var(--blue);
  border: 1px solid var(--blue);
}
.btn--outline:hover { background: var(--blue); color: var(--white); }

.btn--white {
  background: transparent;
  color: var(--white);
  border: 1px solid rgba(255,255,255,0.5);
}
.btn--white:hover { background: var(--white); color: var(--blue); }

.link-more {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  color: var(--blue);
  font-weight: 700;
  border: 1px solid var(--blue);
  border-radius: 6px;
  padding: 12px 24px;
  transition: background var(--transition), color var(--transition);
}
.link-more::after {
  content: '→';
  font-weight: 400;
  transition: transform var(--transition);
}
.link-more:hover { background: var(--blue); color: var(--white); }
.link-more:hover::after { transform: translateX(4px); }

.link-more--white {
  color: var(--white);
  border-color: rgba(255,255,255,0.5);
}
.link-more--white:hover { background: var(--white); color: var(--blue); }

/* ===== Footer ===== */
.footer {
  background: #0a0a0a;
  color: rgba(255,255,255,0.5);
  padding: 80px 0 32px;
}

.footer__inner {
  display: grid;
  grid-template-columns: 1.8fr 1fr 1fr;
  gap: 64px;
  padding-bottom: 64px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
  margin-bottom: 32px;
}

.footer__logo-main {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--white);
  letter-spacing: 0.05em;
}
.footer__logo-sub {
  font-size: 0.6rem;
  letter-spacing: 0.15em;
  opacity: 0.4;
  display: block;
  margin-bottom: 20px;
}

.footer__address {
  font-size: 0.8rem;
  line-height: 2;
}

.footer__col-title {
  font-size: 0.65rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.3);
  margin-bottom: 20px;
}

.footer__nav {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.footer__nav a {
  font-size: 0.82rem;
  transition: color var(--transition);
}
.footer__nav a:hover { color: var(--white); }

.footer__bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.72rem;
}

.footer__policy a { transition: color var(--transition); }
.footer__policy a:hover { color: var(--white); }

/* ===== Responsive ===== */
@media (max-width: 900px) {
  .container { padding: 0 24px; }
  .section { padding: 80px 0; }

  .nav__list, .header__cta { display: none; }
  .nav-toggle { display: flex; }

  .numbers-grid { grid-template-columns: repeat(2, 1fr); }
  .works-grid { grid-template-columns: repeat(2, 1fr); }
  .recruit-inner { grid-template-columns: 1fr; gap: 40px; }
  .recruit__visual { display: none; }
  .contact-inner { grid-template-columns: 1fr; gap: 48px; }
  .footer__inner { grid-template-columns: 1fr; gap: 40px; }
  .footer__bottom { flex-direction: column; gap: 8px; }

  .service-item { grid-template-columns: 56px 1fr; }
  .service-item__icon { display: none; }

  .hero__scroll { display: none; }
}

@media (max-width: 600px) {
  .numbers-grid { grid-template-columns: 1fr 1fr; }
  .works-grid { grid-template-columns: 1fr; }
  .hero__title { font-size: 2rem; }
}