/* ========================================================================
Sustainability Page — CSS Variables (Light Sections)
======================================================================== */
:root {
  --clr-light-bg:           #ffffff;
  --clr-light-bg-alt:       rgba(24, 56, 34, 0.05);
  --clr-light-text:         #1a1a1a;
  --clr-light-text-muted:   #6b6b6b;
  --clr-light-border:       #e0dbd4;
  --clr-heading:            #183822;
}

/* ========================================================================
Section Common (Light)
======================================================================== */
.sec_light {
  background-color: var(--clr-light-bg);
  color: var(--clr-light-text);
}

.sec_light_alt {
  background-color: var(--clr-light-bg-alt);
  color: var(--clr-light-text);
}

/* Section headings (light sections) */
.sec_light h2,
.sec_light_alt h2 {
  color: var(--clr-heading);
}

/* Heading underline (centered) */
.sec_title_line::after {
  content: '';
  display: block;
  width: 60px;
  height: 3px;
  background-color: var(--clr-primary);
  border-radius: 2px;
  margin: 14px auto 0;
}

/* Heading underline (left-aligned) */
.sec_title_line--left::after {
  content: '';
  display: block;
  width: 60px;
  height: 3px;
  background-color: var(--clr-primary);
  border-radius: 2px;
  margin: 14px 0 0;
}

/* ========================================================================
Section: Basic Policy
======================================================================== */
.sec_sustainability_policy {
  padding: 100px 0;
}

.policy_inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

.policy_left h2 {
  font-size: clamp(1.25rem, 2.5vw, 1.75rem);
  font-weight: 600;
  color: var(--clr-heading);
}

.policy_catch {
  font-size: clamp(1.125rem, 2vw, 1.5rem);
  color: var(--clr-primary);
  font-weight: 600;
  line-height: 1.75;
  margin-top: 28px;
  white-space: nowrap;
}

.policy_catch br {
  display: none;
}

/* English/French: allow natural wrapping (no br tags in body text) */
:lang(en) .policy_catch,
:lang(fr) .policy_catch {
  white-space: normal;
}

.policy_right p {
  font-size: 0.9375rem;
  line-height: 2;
  color: var(--clr-light-text-muted);
}

/* ========================================================================
Section: ADVINCO Initiatives
======================================================================== */
.sec_initiatives {
  padding: 100px 0;
  text-align: center;
}

.initiatives_desc {
  max-width: 680px;
  margin: 20px auto 110px; /* Extra margin to allow room for card icon overlap */
  font-size: 0.9375rem;
  line-height: 2;
  color: var(--clr-light-text-muted);
}

.initiative_cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  text-align: left;
}

.initiative_card {
  background-color: var(--clr-light-bg);
  border: 1px solid var(--clr-light-border);
  border-radius: 4px;
  /* overflow: hidden is intentionally omitted to allow the icon to protrude above the card */
}

.initiative_card__top {
  position: relative;
}

.initiative_card__icon {
  position: absolute;
  top: -40px; /* Protrudes 40px above the card border */
  left: 50%;
  transform: translateX(-50%);
  z-index: 1;
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background-color: var(--clr-heading);
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Explicit font-size to override Google Fonts default (24px) */
.initiative_card__icon .material-symbols-outlined {
  font-size: 2.5rem;
}

.initiative_card__img {
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background-color: #2a3a2e;
}

.initiative_card__img picture {
  display: block;
  width: 100%;
  height: 100%;
}

.initiative_card__img img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.initiative_card__body {
  padding: 24px 28px 32px;
}

.initiative_card__body h3 {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--clr-heading);
  margin-bottom: 10px;
}

.initiative_card__body > p {
  font-size: 0.875rem;
  line-height: 1.85;
  color: var(--clr-light-text-muted);
}

.initiative_card__list {
  border-top: 1px solid var(--clr-light-border);
  margin-top: 16px;
  padding-top: 16px;
}

.initiative_card__list li {
  position: relative;
  padding-left: 14px;
  font-size: 0.8125rem;
  line-height: 1.7;
  color: var(--clr-light-text-muted);
}

.initiative_card__list li + li {
  margin-top: 8px;
}

.initiative_card__list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background-color: var(--clr-primary);
}

/* ========================================================================
Section: Connection to Business (Related Links)
※ 共通スタイルは page.css にあり、ここでは独自要素のみ
======================================================================== */
.sec_related .related_heading {
  margin-bottom: 20px; /* Reduced to accommodate description */
}

.sec_related .related_desc {
  max-width: 760px;
  margin: 0 auto 48px;
  text-align: center;
  font-size: 0.9375rem;
  line-height: 2;
  color: var(--clr-light-text-muted);
}

/* ========================================================================
Section: Closing
======================================================================== */
.sec_sustainability_closing {
  padding: 36px 0;
  background-color: rgba(24, 56, 34, 0.1); /* Slightly darker than sec_light_alt (0.05) */
}

.closing_inner {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 24px;
}

.closing_icon {
  flex-shrink: 0;
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background-color: rgba(24, 56, 34, 0.1);
  border: 2px solid rgba(24, 56, 34, 0.25);
  color: var(--clr-heading);
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Explicit font-size to override Google Fonts default (24px) */
.closing_icon .material-symbols-outlined {
  font-size: 1.5rem;
}

.closing_text {
  font-size: 1rem;
  line-height: 1.9;
  color: var(--clr-light-text-muted);
}

/* ========================================================================
Responsive
======================================================================== */
@media (max-width: 900px) {
  .sec_sustainability_policy,
  .sec_initiatives {
    padding: 80px 0;
  }

  .sec_sustainability_closing {
    padding: 40px 0;
  }

  .closing_icon {
    width: 44px;
    height: 44px;
  }

  .closing_icon .material-symbols-outlined {
    font-size: 1.125rem;
  }

  .closing_text {
    font-size: 0.9rem;
  }

  /* Policy: single column */
  .policy_inner {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  /* Initiatives: one card per row, text left / image right */
  .initiative_cards {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .initiative_card {
    display: grid;
    grid-template-columns: 1fr 1fr;
    column-gap: 32px;
    align-items: center;
  }

  .initiative_card__top {
    order: 1; /* Image on left */
  }

  .initiative_card__body {
    order: 2; /* Text on right */
  }

  /* Border: card border off, body border on */
  .initiative_card {
    background-color: transparent;
    border: none;
    border-radius: 0;
  }

  .initiative_card__body {
    background-color: var(--clr-light-bg);
    border: 1px solid var(--clr-light-border);
    border-radius: 4px;
  }

  /* Icon: switch to normal flow with spacing above image */
  .initiative_card__icon {
    position: static;
    transform: none;
    margin: 0 auto 16px;
  }
}

@media (max-width: 767px) {
  .sec_sustainability_policy,
  .sec_initiatives {
    padding: 64px 0;
  }

  .sec_sustainability_closing {
    padding: 32px 0;
  }

  /* Policy */
  .policy_catch {
    font-size: 1.125rem;
    white-space: normal;
  }

  .policy_catch br {
    display: inline;
  }

  /* Initiatives */
  .initiatives_desc {
    margin-bottom: 80px;
  }

  .initiative_cards {
    grid-template-columns: 1fr;
    gap: 60px;
  }

  .initiative_card {
    display: block;
    background-color: var(--clr-light-bg);
    border: 1px solid var(--clr-light-border);
    border-radius: 4px;
  }

  .initiative_card__body {
    background-color: transparent;
    border: none;
    border-radius: 0;
  }

  .initiative_card__top,
  .initiative_card__body {
    order: unset;
  }

  /* Icon: restore absolute positioning for mobile stacked layout */
  .initiative_card__icon {
    position: absolute;
    top: -40px;
    left: 50%;
    transform: translateX(-50%);
    margin: 0;
  }

  .initiative_card__body {
    padding: 20px 20px 28px;
  }

  /* Closing */
  .closing_inner {
    gap: 12px;
  }

  .closing_text {
    font-size: 0.75rem;
  }
}