/* ==========================================================================
   sections.css — Hero, About Us, Business Fields, Corporate Profile,
                  Our Activities, Case Study, Collaboration, Quality, Closing
   ========================================================================== */

/* --- 1. Hero --- */
.hero-sec {
  position: relative;
  background: var(--grad-brand);
  color: var(--c-white);
  padding-block: clamp(4.5rem, 9vw, 7.5rem);
  overflow: hidden;
}

/* 右上の装飾リング */
.hero-sec::before,
.hero-sec::after {
  content: "";
  position: absolute;
  border-radius: 50%;
  pointer-events: none;
}

.hero-sec::before {
  width: clamp(280px, 38vw, 520px);
  height: clamp(280px, 38vw, 520px);
  top: -120px;
  right: -60px;
  border: 1px solid rgba(255, 255, 255, 0.24);
}

.hero-sec::after {
  width: clamp(200px, 26vw, 350px);
  height: clamp(200px, 26vw, 350px);
  top: -60px;
  right: 40px;
  border: 1px solid rgba(248, 182, 43, 0.55);
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 780px;
}

.hero-title {
  font-family: var(--font-display);
  font-size: clamp(2.25rem, 5vw, 3.85rem);
  font-weight: 700;
  line-height: 1.16;
  letter-spacing: 0.01em;
  margin-bottom: 1.75rem;
}

.hero-lead {
  font-size: clamp(1rem, 1.5vw, 1.15rem);
  line-height: 1.85;
  color: rgba(255, 255, 255, 0.92);
  margin-bottom: 0;
}

/* --- 2. About Us --- */
.about-sec {
  padding-block: var(--section-py);
  background-color: var(--c-white);
}

.about-body-wrap {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
  margin-top: 2rem;
}

@media (min-width: 768px) {
  .about-body-wrap {
    grid-template-columns: 5fr 7fr;
  }
  .about-text {
    grid-column: 2;
  }
}

.about-text {
  font-size: 1rem;
  line-height: 1.9;
  color: var(--c-text-body);
  margin: 0;
}

/* --- 3. Our Business Fields / CAPABILITIES --- */
.capabilities-sec {
  padding-block: var(--section-py);
  background-color: var(--c-navy-tint);
}

.cap-header {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
  align-items: end;
  margin-bottom: 2.5rem;
}

@media (min-width: 768px) {
  .cap-header {
    grid-template-columns: 1fr 1fr;
  }
}

.cap-header .sec-title {
  margin-bottom: 0;
  letter-spacing: 0.03em;
}

.cap-lead {
  font-size: 0.95rem;
  line-height: 1.75;
  color: var(--c-text-body);
  margin: 0;
}

.cap-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 1.25rem;
  margin-bottom: 2rem;
}

.cap-card {
  background-color: var(--c-white);
  border-top: 4px solid var(--c-navy);
  padding: 1.75rem 1.5rem 2rem;
  display: flex;
  flex-direction: column;
}

.cap-num {
  display: inline-flex;
  align-items: center;
  justify-content: flex-start;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background-color: var(--c-navy-tint);
  color: var(--c-navy);
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.95rem;
  padding-left: 0.35rem;
  margin-bottom: 1.25rem;
}

.cap-card-title {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 700;
  line-height: 1.3;
  color: var(--c-navy);
  margin-bottom: 1rem;
  min-height: 3.1em;
}

.cap-card-text {
  font-size: 0.9rem;
  line-height: 1.65;
  color: var(--c-text-body);
  margin: 0;
}

/* NEW BUSINESS INITIATIVE / Aircraft MRO 帯 */
.mro-banner {
  background-color: var(--c-yamabuki);
  color: var(--c-navy);
  border-radius: var(--radius-md);
  padding: clamp(1.5rem, 3.5vw, 2.25rem) clamp(1.5rem, 4vw, 3rem);
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
  align-items: center;
}

@media (min-width: 820px) {
  .mro-banner {
    grid-template-columns: auto 1fr;
    gap: 2.5rem;
  }
}

.mro-banner-head {
  padding-right: 0;
}

@media (min-width: 820px) {
  .mro-banner-head {
    border-right: 1px solid rgba(0, 32, 96, 0.3);
    padding-right: 2.5rem;
  }
}

.mro-eyebrow {
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--c-navy);
  margin-bottom: 0.2rem;
}

.mro-title {
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 3.2vw, 2.5rem);
  font-weight: 700;
  line-height: 1.15;
  color: var(--c-navy);
  margin: 0;
}

.mro-text {
  font-size: 0.95rem;
  line-height: 1.7;
  color: var(--c-navy-dark);
  font-weight: 500;
  margin: 0;
}

/* --- 4. Corporate Profile --- */
.profile-sec {
  padding-block: var(--section-py);
  background-color: var(--c-white);
}

.profile-table-wrap {
  max-width: var(--container-narrow);
  margin-inline: auto;
  margin-top: 2rem;
}

.profile-dl {
  margin: 0;
  font-family: var(--font-serif);
}

.profile-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.35rem;
  padding: 1.35rem 1.5rem;
  border-radius: 4px;
}

.profile-row:nth-child(odd) {
  background-color: var(--c-navy-tint);
}

@media (min-width: 640px) {
  .profile-row {
    grid-template-columns: 240px 1fr;
    gap: 2rem;
    padding: 1.5rem 2.5rem;
  }
}

.profile-row dt {
  font-weight: 400;
  color: var(--c-text-body);
  font-size: 0.95rem;
}

.profile-row dd {
  margin: 0;
  color: var(--c-text-main);
  font-size: 0.95rem;
  line-height: 1.75;
}

.profile-assoc-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

/* --- 5. Our Activities (Japan PackagingContest 2026) --- */
.activities-sec {
  padding-block: var(--section-py);
  background-color: var(--c-bg-light);
}

.award-title {
  font-family: var(--font-display);
  font-size: clamp(1.85rem, 4.8vw, 3.6rem);
  font-weight: 700;
  line-height: 1.14;
  color: var(--c-navy);
  margin-bottom: 0.5rem;
  overflow-wrap: break-word;
}

.award-subtitle {
  font-family: var(--font-display);
  font-size: clamp(1.25rem, 2.5vw, 1.85rem);
  font-style: italic;
  font-weight: 500;
  color: var(--c-navy);
  margin-bottom: 1rem;
}

.award-tag {
  font-family: var(--font-serif);
  font-size: 0.85rem;
  letter-spacing: 0.05em;
  color: var(--c-yamabuki-dark);
  font-weight: 700;
  margin-bottom: 1.5rem;
}

.award-lead {
  padding-block: 1.5rem;
  border-top: 1px solid var(--c-navy-border-strong);
  border-bottom: 1px solid var(--c-navy-border-strong);
  font-size: 1rem;
  line-height: 1.8;
  margin-bottom: 2.5rem;
}

.award-metrics {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  text-align: center;
  margin-bottom: 2.75rem;
}

@media (min-width: 640px) {
  .award-metrics {
    grid-template-columns: 1fr 1fr;
    gap: 0;
  }
  .award-metric-item:first-child {
    border-right: 1px solid rgba(0, 32, 96, 0.25);
  }
}

.award-metric-val {
  display: block;
  font-family: var(--font-display);
  font-size: clamp(3rem, 6vw, 4.5rem);
  font-weight: 700;
  line-height: 1.05;
  color: var(--c-navy);
  margin-bottom: 0.4rem;
}

.award-metric-label {
  font-family: var(--font-sans);
  font-size: 0.82rem;
  letter-spacing: 0.06em;
  color: var(--c-text-muted);
  text-transform: uppercase;
}

.award-quote {
  position: relative;
  margin: 0;
  padding: 1.5rem 2rem;
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 1.02rem;
  line-height: 1.9;
  color: var(--c-text-main);
  background-color: rgba(0, 32, 96, 0.03);
  border-left: 4px solid var(--c-navy);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

/* --- 6. Case Study — Cardboard Innovation Story --- */
.casestudy-sec {
  padding-block: var(--section-py);
  background-color: var(--c-white);
}

.cs-top-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
  margin-bottom: 2.5rem;
}

@media (min-width: 768px) {
  .cs-top-grid {
    grid-template-columns: 1fr 1fr;
  }
}

.cs-panel-card {
  background-color: var(--c-white);
  border: 1px solid var(--c-navy-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  padding: clamp(1.5rem, 3vw, 2.5rem);
}

.cs-panel-label {
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--c-navy);
  letter-spacing: 0.04em;
  margin-bottom: 0.5rem;
}

.cs-panel-title {
  font-family: var(--font-display);
  font-size: clamp(1.4rem, 2.5vw, 1.85rem);
  font-weight: 600;
  line-height: 1.2;
  color: var(--c-text-main);
  margin-bottom: 1.5rem;
}

.cs-product-fig img {
  margin-inline: auto;
  margin-bottom: 1rem;
}

.cs-product-caption {
  text-align: center;
  font-family: var(--font-display);
  font-size: 1rem;
  line-height: 1.4;
  color: var(--c-text-main);
}

.cs-product-caption strong {
  display: block;
  font-weight: 700;
}

.cs-issues-list {
  list-style: none;
  padding: 0;
  margin: 1.5rem 0 0;
  display: flex;
  flex-direction: column;
  gap: 1.75rem;
}

.cs-issue-item {
  display: grid;
  grid-template-columns: 56px 1fr;
  gap: 1.25rem;
  align-items: center;
  font-size: 0.92rem;
  line-height: 1.6;
}

.cs-issue-icon {
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--c-text-main);
}

/* Case Study Middle (Structural Innovation) */
.cs-innovation-block {
  background-color: var(--c-bg-light);
  border-radius: var(--radius-lg);
  padding: clamp(2rem, 4vw, 3.5rem) clamp(1.25rem, 3vw, 2.5rem);
  margin-bottom: 2.5rem;
}

.cs-hero-img {
  max-width: 820px;
  margin: 1.5rem auto 2.5rem;
}

.cs-abc-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.25rem;
}

.cs-abc-card {
  background-color: var(--c-white);
  border: 1px solid var(--c-navy-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-card);
  padding: 1.5rem;
  text-align: center;
}

.cs-abc-card figure {
  height: 150px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1rem;
}

.cs-abc-card figure img {
  max-height: 140px;
  width: auto;
}

.cs-abc-title {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 600;
  line-height: 1.25;
  color: var(--c-text-main);
  padding-bottom: 0.75rem;
  margin-bottom: 0.75rem;
  border-bottom: 1px solid var(--c-navy);
}

.cs-abc-text {
  text-align: left;
  font-size: 0.88rem;
  line-height: 1.65;
  margin: 0;
}

/* Case Study Bottom (Panel 3 Results) */
.cs-results-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

@media (min-width: 768px) {
  .cs-results-grid {
    grid-template-columns: 1fr 1fr;
  }
}

.cs-result-card {
  background-color: var(--c-white);
  border: 1px solid var(--c-navy-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  padding: clamp(1.75rem, 3vw, 2.5rem);
  text-align: center;
}

.cs-result-heading {
  font-family: var(--font-display);
  font-size: 1.4rem;
  font-weight: 600;
  line-height: 1.2;
  color: var(--c-text-main);
  margin-bottom: 0.5rem;
}

.cs-result-big {
  font-family: var(--font-display);
  font-size: clamp(3.25rem, 6vw, 4.75rem);
  font-weight: 600;
  line-height: 1;
  color: var(--c-navy);
  margin-bottom: 0.35rem;
}

.cs-result-unit {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--c-text-main);
  margin-bottom: 1rem;
}

.cs-result-fig {
  margin-block: 1rem 1.25rem;
}

.cs-result-fig img {
  margin-inline: auto;
}

.cs-before-after {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
  margin-bottom: 1.25rem;
  font-family: var(--font-display);
}

.cs-ba-label {
  display: block;
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--c-text-main);
}

.cs-ba-val {
  display: block;
  font-size: clamp(1.3rem, 2.4vw, 1.75rem);
  font-weight: 700;
  color: var(--c-text-main);
}

.cs-ba-after .cs-ba-val {
  color: var(--c-yamabuki-dark);
}

.cs-result-note {
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-weight: 700;
  line-height: 1.4;
  color: var(--c-text-main);
  margin: 0;
}

/* --- 9a. Aerospace Industry Network（旧 collaboration のカード版） --- */
.network-sec {
  padding-block: var(--section-py);
  background-color: #082b67; /* 実測: (8,43,103)。既存トークン --c-navy と異なる場合は、この値を使い、差異を報告 */
}
.network-sec .sec-eyebrow { color: #f7d347; }
.network-sec .sec-title   { color: #ffffff; }
.network-sec .cap-lead    { color: #c7d7eb; }

.network-grid {
  list-style: none;
  margin: 2rem 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
}
@media (min-width: 600px)  { .network-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1024px) { .network-grid { grid-template-columns: repeat(4, 1fr); } }

.network-card {
  background-color: rgba(255, 255, 255, 0.055); /* 実測: #16376f 付近（背景 #082b67 上） */
  border: 1px solid rgba(255, 255, 255, 0.25);  /* 実測: #49628e 付近 */
  border-radius: var(--radius-md);
  transition: background-color 0.2s ease, border-color 0.2s ease;
}
.network-card:hover,
.network-card:focus-within {
  background-color: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.55);
}
.network-link {
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
  height: 100%;
  padding: 1.4rem 1.4rem 1.25rem;
  color: inherit;
  text-decoration: none;
  border-radius: inherit;
}
.network-link { position: relative; }
.network-link:hover { opacity: 1; }

.network-ext {
  position: absolute;
  top: 1.35rem;
  right: 0.9rem;
  width: 28px;
  height: 28px;
  color: #f7d347;
  opacity: 0.85;
  pointer-events: none;
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.network-card {
  transition: background-color 0.2s ease, border-color 0.2s ease,
              transform 0.2s ease, box-shadow 0.2s ease;
}

.network-card:hover,
.network-card:focus-within {
  border-color: rgba(247, 211, 71, 0.6);
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.25);
}

.network-card:hover .network-ext,
.network-card:focus-within .network-ext {
  opacity: 1;
  transform: translate(2px, -2px);
}

.network-link:hover .network-abbr,
.network-link:focus-visible .network-abbr {
  text-decoration: underline;
  text-underline-offset: 0.2em;
  text-decoration-thickness: 2px;
}

@media (prefers-reduced-motion: reduce) {
  .network-card,
  .network-ext { transition: none; }
  .network-card:hover,
  .network-card:focus-within,
  .network-card:hover .network-ext,
  .network-card:focus-within .network-ext { transform: none; }
}
.network-link:focus-visible {
  outline: 2px solid #f7d347;
  outline-offset: 2px;
}
.network-sec .visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}
.network-abbr {
  font-family: var(--font-display);
  font-size: 1.4rem;
  font-weight: 700;
  line-height: 1.2;
  color: #ffffff;
}
.network-name {
  font-size: 0.8rem;
  line-height: 1.55;
  color: #b5c6dd; /* 実測 */
}
.network-region {
  margin-top: auto;
  font-family: var(--font-display);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: #f7d347; /* 実測 */
}

/* --- 9. collaboration --- */
.collaboration-sec {
  padding-block: var(--section-py);
  background-color: var(--c-white);
}

.collaboration-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
  align-items: center;
  margin-top: 1.5rem;
}

@media (min-width: 768px) {
  .collaboration-layout {
    grid-template-columns: 5fr 7fr;
  }
}

.collaboration-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.collaboration-item {
  display: grid;
  grid-template-columns: 36px 1fr;
  gap: 0.85rem;
  align-items: start;
}

.collaboration-pin {
  display: block;
  width: 29px;
  height: 38px;
  margin-top: 0.1rem;
  overflow: visible;
}

/* 地図内ピン（assets/img/collaboration_japan_map.svg）と同一形状・同一配色 */
.collaboration-pin .pin-body,
.collaboration-pin .pin-letter {
  fill: var(--c-navy);
}

.collaboration-pin .pin-inner {
  fill: var(--c-white);
}

.collaboration-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.65rem;
  margin-bottom: 0.15rem;
}

.collaboration-abbr {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--c-navy);
}

.collaboration-region {
  font-family: var(--font-serif);
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--c-yamabuki-dark);
  letter-spacing: 0.04em;
}

.collaboration-fullname {
  font-size: 0.88rem;
  color: var(--c-text-body);
  margin: 0;
}

.collaboration-map-fig img {
  max-height: 620px;
  width: auto;
  margin-inline: auto;
}

/* --- 10. Aerospace Quality & Certifications --- */
.quality-sec {
  padding-block: var(--section-py);
  background-color: var(--c-navy-tint);
}

.quality-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
  margin-top: 2rem;
}

@media (min-width: 768px) {
  .quality-grid {
    grid-template-columns: 1fr 1fr;
  }
}

.quality-card {
  background-color: var(--c-white);
  border: 1px solid var(--c-border-card);
  border-radius: var(--radius-md);
  padding: clamp(1.75rem, 3.5vw, 2.75rem);
}

.quality-code {
  font-family: var(--font-display);
  font-size: clamp(1.85rem, 3.2vw, 2.5rem);
  font-weight: 700;
  color: var(--c-navy);
  margin-bottom: 1rem;
  padding-bottom: 0.65rem;
  position: relative;
}

.quality-code::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 48px;
  height: 2px;
  background-color: var(--c-navy);
}

.quality-desc {
  font-size: 0.92rem;
  line-height: 1.75;
  margin: 0;
}

.quality-marks {
  margin: 20px 0;
  padding: 16px 0;
  background: #fff; /* 合成画像の白地と合わせるため */
}
.quality-marks img {
  display: block;
  width: 280px;
  max-width: 100%;
  height: auto;
}

.quality-meta {
  margin: 1.25rem 0 0;
  padding-top: 1.1rem;
  border-top: 1px solid var(--c-navy-border);
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.quality-meta-row {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

.quality-meta dt {
  font-family: var(--font-display);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--c-teal);
}

.quality-meta dd {
  margin: 0;
  font-size: 0.84rem;
  line-height: 1.55;
  color: var(--c-navy);
  overflow-wrap: anywhere;
}

/* --- 11. Closing (CONTACT US) --- */
.closing-sec {
  background: var(--grad-brand);
  color: var(--c-white);
  padding-block: clamp(4.5rem, 8vw, 7rem);
  text-align: center;
}

.closing-eyebrow {
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  color: rgba(255, 255, 255, 0.9);
  margin-bottom: 1rem;
}

.closing-title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4.5vw, 3.35rem);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 1.75rem;
}

.closing-text {
  max-width: 680px;
  margin-inline: auto;
  font-size: 0.96rem;
  line-height: 1.9;
  color: rgba(255, 255, 255, 0.92);
  margin-bottom: 2.75rem;
}

.cta-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 1.25rem;
  background-color: var(--c-white);
  color: var(--c-navy);
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  padding: 1rem 2.75rem;
  border-radius: var(--radius-pill);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
}

.cta-btn:hover {
  background-color: var(--c-yamabuki);
  color: var(--c-navy);
  opacity: 1;
}

.cta-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background-color: var(--c-yamabuki);
}

.cta-btn:hover .cta-dot {
  background-color: var(--c-navy);
}