/* ============================================================
   BUSINESS PAGE — taiho-hp-frontend
   ============================================================ */

/* Hero */
.business-hero {
  position: relative;
  min-height: 440px;
  display: grid;
  align-content: end;
  overflow: hidden;
  background: var(--color-black);
}

.business-hero__image {
  position: absolute;
  inset: 0;
  margin: 0;
}

.business-hero__image::after {
  position: absolute;
  inset: 0;
  content: "";
  background:
    repeating-linear-gradient(0deg, rgba(255, 255, 255, 0.006) 0 1px, transparent 1px 8px),
    linear-gradient(90deg, rgba(0, 0, 0, 0.54) 0, transparent 60%),
    linear-gradient(180deg, rgba(0, 0, 0, 0.26), rgba(0, 0, 0, 0.02) 40%, rgba(0, 0, 0, 0.46));
}

.business-hero__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: grayscale(0.72) saturate(0.38) contrast(1.14) brightness(0.88);
}

.business-hero__copy {
  position: relative;
  z-index: 2;
  padding: 96px var(--space-side) 68px;
  color: var(--color-white);
}

.business-hero__copy .section-kicker {
  color: rgba(255, 255, 255, 0.72);
  margin-bottom: 14px;
}

.business-hero__copy h1 {
  margin: 0;
  font-family: var(--font-display);
  font-size: 3.8rem;
  font-weight: var(--weight-heavy);
  line-height: 1.15;
  text-shadow: 0 2px 20px rgba(0, 0, 0, 0.36);
}

.business-hero__breadcrumb {
  position: absolute;
  top: 32px;
  left: var(--space-side);
  z-index: 2;
  display: flex;
  gap: 8px;
  align-items: center;
  color: rgba(255, 255, 255, 0.62);
  font-family: var(--font-en);
  font-size: 0.76rem;
  font-weight: 600;
  text-transform: uppercase;
  word-spacing: 0.12em;
}

.business-hero__breadcrumb a {
  color: inherit;
  transition: color 160ms;
}

.business-hero__breadcrumb a:hover {
  color: var(--color-white);
}

.business-hero__breadcrumb .sep {
  opacity: 0.48;
}

/* Overview Section */
.business-overview {
  display: grid;
  grid-template-columns: minmax(340px, 42%) 1fr;
  min-height: 420px;
}

.business-overview__panel {
  position: relative;
  overflow: hidden;
  display: grid;
  align-content: center;
  padding: 68px var(--section-pad);
  background-color: var(--color-red);
  background-image: linear-gradient(135deg, rgba(214, 0, 0, 0.99), rgba(196, 0, 0, 0.99));
  color: var(--color-white);
  text-shadow: 0 1px 0 rgba(0, 0, 0, 0.14);
}

.business-overview__panel .section-kicker {
  color: var(--color-white);
}

.business-overview__panel h2 {
  margin: 0;
  font-family: var(--font-display);
  font-size: 2.2rem;
  font-weight: var(--weight-heavy);
  line-height: 1.28;
}

.business-overview__panel .outline-word {
  position: absolute;
  top: -12px;
  left: 20px;
  color: transparent;
  font-family: var(--font-en);
  font-size: 8.6rem;
  font-weight: 500;
  line-height: 0.9;
  opacity: 0.38;
  -webkit-text-fill-color: transparent;
  -webkit-text-stroke: 1px rgba(255, 255, 255, 0.46);
  text-transform: uppercase;
}

.business-overview__content {
  display: grid;
  align-content: center;
  padding: 68px var(--section-pad);
  background-color: var(--color-paper);
  background-image: var(--paper-texture);
}

.business-overview__content p {
  margin: 0 0 1.6em;
  font-size: 0.96rem;
  font-weight: var(--weight-strong);
  line-height: 2.15;
  color: #2a2a28;
}

.business-overview__content p:last-child {
  margin-bottom: 0;
}

/* Services Section */
.business-services {
  padding: 96px 0 108px;
  background-color: var(--color-paper-2);
  background-image: var(--paper-texture);
}

.business-services__inner {
  width: min(100% - var(--space-side) * 2, 1080px);
  margin-inline: auto;
}

.business-services__heading {
  margin: 0 0 56px;
  display: flex;
  align-items: baseline;
  gap: 18px;
}

.business-services__heading .section-kicker {
  margin: 0;
}

.business-services__heading strong {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: var(--weight-heavy);
  line-height: 1;
}

.business-services__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2px;
}

.business-service-card {
  display: grid;
  gap: 20px;
  padding: 44px 36px 48px;
  background: var(--color-white);
  border-top: 4px solid var(--color-red);
}

.business-service-card__number {
  font-family: var(--font-en);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--color-red);
  text-transform: uppercase;
}

.business-service-card h3 {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: var(--weight-heavy);
  line-height: 1.3;
  color: var(--color-ink);
}

.business-service-card p {
  margin: 0;
  font-size: 0.92rem;
  font-weight: var(--weight-strong);
  line-height: 2;
  color: #3a3a38;
}

.business-service-card__detail {
  margin: 0;
  padding: 18px 0 0;
  border-top: 1px solid var(--color-line);
  list-style: none;
  display: grid;
  gap: 8px;
}

.business-service-card__detail li {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  font-size: 0.84rem;
  font-weight: var(--weight-strong);
  color: #555;
  line-height: 1.65;
}

.business-service-card__detail li::before {
  content: "";
  display: block;
  flex-shrink: 0;
  width: 5px;
  height: 5px;
  margin-top: 0.5em;
  border-radius: 50%;
  background: var(--color-red);
}

/* Applications Section */
.business-applications {
  padding: 96px 0 108px;
  background: var(--color-ink);
  color: var(--color-white);
}

.business-applications__inner {
  width: min(100% - var(--space-side) * 2, 1080px);
  margin-inline: auto;
}

.business-applications__heading {
  margin: 0 0 56px;
  display: flex;
  align-items: baseline;
  gap: 18px;
}

.business-applications__heading .section-kicker {
  margin: 0;
  color: rgba(255, 255, 255, 0.5);
}

.business-applications__heading strong {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: var(--weight-heavy);
  line-height: 1;
  color: var(--color-white);
}

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

.business-app-item {
  display: grid;
  grid-template-columns: 64px 1fr;
  gap: 0 20px;
  align-items: start;
  padding: 32px 28px;
  background: rgba(255, 255, 255, 0.04);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.business-app-item__index {
  font-family: var(--font-en);
  font-size: 2rem;
  font-weight: 700;
  color: var(--color-red);
  line-height: 1;
  padding-top: 4px;
}

.business-app-item h3 {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: var(--weight-heavy);
  color: var(--color-white);
  line-height: 1.3;
}

.business-app-item p {
  margin: 0;
  font-size: 0.86rem;
  font-weight: var(--weight-strong);
  color: rgba(255, 255, 255, 0.62);
  line-height: 1.85;
}

/* Materials & Methods Section */
.business-materials {
  padding: 96px 0 108px;
  background-color: var(--color-paper);
  background-image: var(--paper-texture);
}

.business-materials__inner {
  width: min(100% - var(--space-side) * 2, 1080px);
  margin-inline: auto;
}

.business-materials__heading {
  margin: 0 0 56px;
}

.business-materials__heading .section-kicker {
  margin: 0 0 12px;
}

.business-materials__heading h2 {
  margin: 0;
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: var(--weight-heavy);
  line-height: 1.2;
}

.business-materials__body {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px 80px;
  align-items: start;
}

.business-materials__block h3 {
  margin: 0 0 20px;
  padding-bottom: 14px;
  border-bottom: 2px solid var(--color-ink);
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: var(--weight-heavy);
}

.business-materials__block p {
  margin: 0;
  font-size: 0.92rem;
  font-weight: var(--weight-strong);
  line-height: 2.1;
  color: #3a3a38;
}

.business-materials__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 10px;
}

.business-materials__list li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.92rem;
  font-weight: var(--weight-strong);
  color: #3a3a38;
  line-height: 1.7;
}

.business-materials__list li::before {
  content: "";
  display: block;
  flex-shrink: 0;
  width: 5px;
  height: 5px;
  margin-top: 0.55em;
  border-radius: 50%;
  background: var(--color-red);
}

/* CTA Strip */
.business-cta {
  padding: 80px var(--space-side);
  text-align: center;
  background: var(--color-red);
  color: var(--color-white);
}

.business-cta p {
  margin: 0 0 32px;
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: var(--weight-heavy);
  line-height: 1.5;
}

.business-cta .outline-button {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 16px 40px;
  border: 2px solid var(--color-white);
  color: var(--color-white);
  font-family: var(--font-en);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  transition: background 200ms, color 200ms;
}

.business-cta .outline-button:hover {
  background: var(--color-white);
  color: var(--color-red);
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 1000px) {
  .business-hero {
    min-height: 380px;
    margin-top: var(--header-height);
  }

  .business-hero__copy h1 {
    font-size: 3.1rem;
  }

  .business-overview {
    grid-template-columns: 1fr 1fr;
  }

  .business-services__grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 720px) {
  .business-hero {
    min-height: 310px;
  }

  .business-hero__copy {
    padding: 72px var(--space-side) 52px;
  }

  .business-hero__copy h1 {
    font-size: 2.5rem;
  }

  .business-overview {
    grid-template-columns: 1fr;
  }

  .business-overview__panel,
  .business-overview__content {
    padding: 52px var(--space-side);
  }

  .business-services__grid {
    grid-template-columns: 1fr;
  }

  .business-applications__grid {
    grid-template-columns: 1fr;
  }

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

  .business-services,
  .business-applications,
  .business-materials {
    padding: 64px 0 80px;
  }
}

@media (max-width: 430px) {
  .business-hero__copy h1 {
    font-size: 2rem;
  }

  .business-overview__panel h2 {
    font-size: 1.8rem;
  }

  .business-service-card {
    padding: 32px 24px 36px;
  }

  .business-app-item {
    grid-template-columns: 48px 1fr;
    padding: 24px 20px;
  }
}