/* ===============================================
   リセット & ベーススタイル
   =============================================== */

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  color: #193755;
  background-color: #FFFFFF;
  line-height: 1.8;
  font-size: 16px;
}

/* ===============================================
   ヘッダー
   =============================================== */

.header {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background-color: rgba(255, 255, 255, 0.95);
  border-bottom: 1px solid #E8EAED;
  transition: all 0.3s ease;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.header-inner {
  max-width: 1400px;
  margin: 0 auto;
  padding: 20px 40px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-size: 24px;
  font-weight: 700;
  color: #193755;
  letter-spacing: 2px;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
}

.logo__img{
  height: 36px;
  width: auto;
  display: block;
}

.nav {
  display: flex;
  gap: 40px;
}

.nav a {
  color: #193755;
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  transition: color 0.3s ease;
}

.nav a:hover {
  color: #00BCD4;
}

/* ===============================================
   ヒーロー
   =============================================== */

.hero {
  height: 100vh;
  background-size: cover;
  background-position: center;
  background-attachment: fixed;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: flex-start;
  padding-left: 80px;
  margin-top: 0;
}

/* iOS Safari: background-attachment: fixed may hide background images */
@media (max-width: 768px){
  .hero{ background-attachment: scroll; }
}

.hero-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(25, 55, 85, 0.4);
}

.hero-content {
  position: relative;
  z-index: 10;
  max-width: 600px;
  color: #FFFFFF;
}

.hero-title {
  font-size: 72px;
  font-style: italic;
  font-family: Georgia, Garamond, serif;
  margin-bottom: 10px;
  font-weight: 400;
  letter-spacing: 2px;
}

.hero-subtitle {
  font-size: 24px;
  font-weight: 300;
  margin-bottom: 30px;
  opacity: 0.9;
}

.hero-description {
  font-size: 18px;
  margin-bottom: 40px;
  line-height: 1.8;
  opacity: 0.95;
}

.hero-buttons {
  display: flex;
  gap: 20px;
}

/* ===============================================
   セクション
   =============================================== */

.section {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 120px 40px;
  scroll-margin-top: 70px;
}

.section-light {
  background-color: #FFFFFF;
}

.section-dark {
  background-color: #F8F9FA;
}

.section-contact {
  background-color: #193755;
  color: #FFFFFF;
  text-align: center;
}

.section-contact .section-title {
  color: #00BCD4;
}

.section-contact .section-subtitle {
  color: #FFFFFF;
}

.section-contact p {
  color: #FFFFFF;
  opacity: 0.9;
}

.section-inner {
  max-width: 1400px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  /*gap: 80px;*/
  align-items: center;
}

.section-text {
  padding-right: 40px;
  /*margin-bottom: 50px;*/
}

.section-title {
  font-size: 48px;
  font-style: italic;
  font-family: Georgia, Garamond, serif;
  color: #193755;
  margin-bottom: 20px;
  font-weight: 400;
  line-height: 1.2;
}

.section-subtitle {
  font-size: 28px;
  color: #00BCD4;
  margin-bottom: 32px;
  font-weight: 500;
  line-height: 1.3;
}

.section-text p {
  font-size: 16px;
  line-height: 1.9;
  color: #193755;
  margin-bottom: 24px;
}

.section-image {
  overflow: hidden;
  border-radius: 8px;
}

.section-image img {
  width: 100%;
  height: auto;
  display: block;
  transition: transform 0.3s ease;
}

.section-image:hover img {
  transform: scale(1.05);
}

.section-images {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}

.section-images img {
  width: 100%;
  height: auto;
  border-radius: 8px;
  transition: transform 0.3s ease;
}

.section-images img:hover {
  transform: scale(1.02);
}



/* ===============================================
   製品一覧
   =============================================== */

#products .section-inner {
grid-template-columns: 1fr;
}



.products-label {
  font-size: 16px;
  font-weight: 600;
  color: #193755;
  padding-bottom: 10px;
  border-bottom: 2px solid #00BCD4;
}



/* ===============================================
   用途例
   =============================================== */

.application-item {
  display: flex;
  flex-direction: column;
  gap: 15px;
}

.application-label {
  font-size: 16px;
  font-weight: 600;
  color: #193755;
  padding-bottom: 10px;
  border-bottom: 2px solid #00BCD4;
}

/* ===============================================
   コンセプト画像
   =============================================== */

.concept-item {
  display: flex;
  flex-direction: column;
  gap: 15px;
}

.concept-label {
  font-size: 16px;
  font-weight: 600;
  color: #193755;
  padding-bottom: 10px;
  border-bottom: 2px solid #00BCD4;
}

#concept .section-images {
  grid-template-columns: 1fr 1fr;
  gap: 30px;
}

#concept .section-inner {
  grid-template-columns: 1fr;
}

#concept .section-text {
  grid-column: 1;
}

#concept .section-images {
  grid-column: 1;
  grid-template-columns: 1fr 1fr;
}

/* ===============================================
   製造プロセス
   =============================================== */

.process-images {
  grid-template-columns: 1fr 1fr !important;
  gap: 20px !important;
}

.process-item {
  display: flex;
  flex-direction: column;
  gap: 15px;
}

.process-label {
  font-size: 14px;
  font-weight: 600;
  color: #193755;
  padding-bottom: 10px;
  border-bottom: 2px solid #00BCD4;
}

#process .section-inner {
  grid-template-columns: 1fr;
}

#process .section-text {
  grid-column: 1;
}

#process .section-images {
  grid-column: 1;
}

/* ===============================================
   用途例
   =============================================== */

.application-images {
  grid-template-columns: 1fr 1fr !important;
  gap: 30px !important;
}

#applications .section-inner {
  grid-template-columns: 1fr;
}

#applications .section-text {
  grid-column: 1;
}

#applications .section-images {
  grid-column: 1;
}

/* ===============================================
   認証書
   =============================================== */

.certificate-images {
  grid-template-columns: 1fr 1fr !important;
  gap: 20px !important;
}

.certificate-item {
  display: flex;
  justify-content: center;
  align-items: center;
}

.certificate-item img {
  max-width: 100%;
  height: auto;
}

#certificates .section-inner {
  grid-template-columns: 1fr;
}

#certificates .section-text {
  grid-column: 1;
}

#certificates .section-images {
  grid-column: 1;
}

.certificates-label {
  font-size: 16px;
  font-weight: 600;
  color: #193755;
  padding-bottom: 10px;
  border-bottom: 2px solid #00BCD4;
}

/* ===============================================
   マスターバッチ
   =============================================== */

#masterbatch .section-inner {
  grid-template-columns: 1fr;
  justify-items: start;
}

#masterbatch .section-text {
  grid-column: 1;
}

#masterbatch .section-table {
  grid-column: 1;
  margin-top: 40px;
  max-width: 100%;
}

/* ===============================================
   テーブル
   =============================================== */

.section-table {
  grid-column: 1 / -1;
  margin-top: 40px;
  overflow-x: auto;
}

#masterbatch .section-table {
  grid-column: 1;
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  background-color: #FFFFFF;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
  border-radius: 8px;
  overflow: hidden;
}

.data-table thead {
  background-color: #00BCD4;
  color: #FFFFFF;
}

.data-table th {
  padding: 16px;
  text-align: left;
  font-weight: 600;
  font-size: 14px;
}

.data-table td {
  padding: 14px 16px;
  border-bottom: 1px solid #E8EAED;
  font-size: 14px;
  color: #193755;
}

.data-table tbody tr:nth-child(even) {
  background-color: #fff;
}

.data-table tbody tr:hover {
  background-color: #E8EAED;
}

/* ===============================================
   エフェクトグリッド
   =============================================== */

.section-content {
  grid-column: 1 / -1;
}

.effect-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  margin-top: 40px;
}

.effect-item {
  background-color: #FFFFFF;
  padding: 30px;
  border-radius: 8px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.effect-item h4 {
  font-size: 18px;
  color: #193755;
  margin-bottom: 20px;
  font-weight: 600;
}

.effect-item img {
  width: 100%;
  height: auto;
  border-radius: 4px;
}

.effect-item .data-table {
  box-shadow: none;
  margin-top: 20px;
}

.cert-mark {
  max-width: 80px;
  height: auto;
  display: inline-block;
}

/* ===============================================
   ボタン
   =============================================== */

.btn {
  display: inline-block;
  padding: 16px 40px;
  border-radius: 4px;
  text-decoration: none;
  font-size: 14px;
  font-weight: 600;
  transition: all 0.3s ease;
  cursor: pointer;
  border: none;
}

.btn-primary {
  background-color: #193755;
  color: #FFFFFF;
}

.btn-primary:hover {
  background-color: #00BCD4;
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 188, 212, 0.3);
}

.btn-secondary {
  background-color: transparent;
  color: #FFFFFF;
  border: 2px solid #FFFFFF;
}

.btn-secondary:hover {
  background-color: #FFFFFF;
  color: #193755;
  transform: translateY(-2px);
}

.contact-buttons {
  display: flex;
  gap: 20px;
  justify-content: center;
  margin-top: 40px;
}

.contact-buttons .btn-primary {
  background-color: #00BCD4;
  color: #193755;
}

.contact-buttons .btn-primary:hover {
  background-color: #FFFFFF;
}

.contact-buttons .btn-secondary {
  border-color: #FFFFFF;
}

/* ===============================================
   フッター
   =============================================== */

.footer {
  background-color: #193755;
  color: #FFFFFF;
  padding: 40px;
  opacity: 0.95;
}

.footer-content {
  max-width: 1400px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: flex-start;
}

.footer-left {
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
}

.footer-right {
  display: flex;
  flex-direction: column;
  gap: 15px;
  align-items: flex-end;
  justify-content: flex-start;
  padding-top: 26px; /* ボタンが詰まって見えないよう少し下げる */
}

.company-info {
  text-align: left;
  line-height: 1.6;
  font-size: 13px;
}

.company-info p {
  margin: 0;
}

.footer-link {
  color: rgba(255,255,255,.86);
  text-decoration: none;
  font-weight: bold;
  transition: all 0.3s ease;
  display: inline-block;
}

.footer-link:hover {
  color: #00BCD4;
  text-decoration: underline;
}

.footer-download {
  background-color: #00BCD4 !important;
  color: #193755 !important;
  font-weight: bold;
  padding: 14px 28px !important;
  border-radius: 6px;
  transition: all 0.3s ease;
  text-decoration: none;
  display: inline-block;
  font-size: 14px;
  text-align: center;
  min-width: 180px;
}

.footer-download:hover {
  background-color: #00A8C4 !important;
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 188, 212, 0.3);
}

.footer-contact {
  background-color: #4CAF50 !important;
  color: #FFFFFF !important;
  font-weight: bold;
  padding: 14px 28px !important;
  border-radius: 6px;
  transition: all 0.3s ease;
  text-decoration: none;
  display: inline-block;
  font-size: 14px;
  text-align: center;
  min-width: 180px;
}

.footer-contact:hover {
  background-color: #45a049 !important;
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(76, 175, 80, 0.3);
}

.footer-bottom {
  text-align: center;
  padding-top: 20px;
  margin-top: 20px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  font-size: 12px;
}

.footer-bottom p {
  margin: 0;
}


/* ===============================================
   レスポンシブ
   =============================================== */

@media (max-width: 1024px) {
  .section-inner {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .section-text {
    padding-right: 0;
  }

  .section-title {
    font-size: 36px;
  }

  .section-subtitle {
    font-size: 20px;
  }

  .hero-title {
    font-size: 48px;
  }

  .hero-subtitle {
    font-size: 18px;
  }

  .hero-description {
    font-size: 16px;
  }

  .effect-grid {
    grid-template-columns: 1fr;
  }

  .process-images {
    grid-template-columns: 1fr !important;
  }

  .application-images {
    grid-template-columns: 1fr !important;
  }

  .certificate-images {
    grid-template-columns: 1fr 1fr !important;
  }

  #concept .section-images {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .header-inner {
    padding: 15px 20px;
  }

  .nav {
    gap: 20px;
    font-size: 12px;
  }

  .hero {
    padding-left: 40px;
    margin-top: 60px;
  }

  .hero-title {
    font-size: 36px;
  }

  .hero-subtitle {
    font-size: 16px;
  }

  .hero-description {
    font-size: 14px;
  }

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

.section {
  padding: 120px 0;
}

  .section-title {
    font-size: 28px;
  }

  .section-subtitle {
    font-size: 16px;
  }

  .section-text p {
    font-size: 14px;
  }

  .data-table th,
  .data-table td {
    padding: 10px 8px;
    font-size: 12px;
  }

  .effect-item {
    padding: 20px;
  }

  .effect-item h4 {
    font-size: 16px;
  }

  .contact-buttons {
    flex-direction: column;
  }

  .btn {
    padding: 12px 30px;
    font-size: 12px;
  }

  .process-images {
    grid-template-columns: 1fr !important;
  }

  .application-images {
    grid-template-columns: 1fr !important;
  }

  .certificate-images {
    grid-template-columns: 1fr !important;
  }

  #concept .section-images {
    grid-template-columns: 1fr;
  }
}

/* ===============================================
   アニメーション
   =============================================== */

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.section {
  animation: fadeInUp 0.8s ease-out;
}


/* ===== About (Overview) split layout ===== */
.section-about-inner{
  display:grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: clamp(18px, 4vw, 44px);
  align-items: center;
}

.about-copy{
  min-width: 0;
}

.about-media{
  position: relative;
  min-height: 320px;
}

.about-frame{
  position: relative;
  width: 100%;
  aspect-ratio: 4 / 3;
  border-radius: 18px;
  overflow: hidden;
  background: rgba(255,255,255,.98);
  border: 1px solid rgba(12, 42, 72, .08);
  box-shadow: 0 18px 55px rgba(0,0,0,.12);
  transform: translateZ(0);
  animation: aboutFloat 8s ease-in-out infinite;
}

.about-frame img{
  width: 100%;
  height: 100%;
  object-fit: cover;
  display:block;
  filter: saturate(1.05) contrast(1.02);
}

/* subtle highlight */
.about-frame::after{
  content:"";
  position:absolute;
  inset:-40% -40% auto auto;
  width: 70%;
  height: 70%;
  background: radial-gradient(circle at 30% 30%, rgba(255,255,255,.55), rgba(255,255,255,0) 60%);
  transform: rotate(10deg);
  pointer-events:none;
}

@keyframes aboutFloat{
  0%,100%{ transform: translateY(0); }
  50%{ transform: translateY(-8px); }
}

/* dotted bubbles like reference */
.about-dots{
  position:absolute;
  inset: -14px -18px auto auto;
  width: 190px;
  height: 150px;
  display:grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 10px;
  opacity: .55;
  pointer-events:none;
  filter: blur(.0px);
}

.about-dots span{
  width: 10px;
  height: 10px;
  border-radius: 999px;
  background: rgba(33, 150, 243, .26);
  box-shadow: 0 6px 16px rgba(33,150,243,.18);
  animation: dotPulse 3.6s ease-in-out infinite;
}

.about-dots span:nth-child(3n){ background: rgba(255, 105, 180, .22); box-shadow: 0 6px 16px rgba(255,105,180,.16); }
.about-dots span:nth-child(4n){ background: rgba(124, 77, 255, .20); box-shadow: 0 6px 16px rgba(124,77,255,.14); }

.about-dots span:nth-child(odd){ animation-delay: .2s; }
.about-dots span:nth-child(5n){ animation-delay: .6s; }
.about-dots span:nth-child(7n){ animation-delay: 1s; }

@keyframes dotPulse{
  0%,100%{ transform: translateY(0) scale(1); opacity:.65; }
  50%{ transform: translateY(-6px) scale(1.08); opacity: .95; }
}

@media (max-width: 980px){
  .section-about-inner{
    grid-template-columns: 1fr;
  }
  .about-media{
    min-height: 260px;
  }
  .about-dots{
    inset: -10px auto auto 10px;
    opacity: .45;
  }
}


/* =========================================
   First-visit intro (logo)
========================================= */
.intro{
  position: fixed;
  inset: 0;
  z-index: 9999;
  display: grid;
  place-items: center;
  background:
    radial-gradient(1200px 800px at 20% 20%, rgba(0, 120, 255, .10), transparent 60%),
    radial-gradient(900px 700px at 80% 30%, rgba(255, 92, 165, .10), transparent 55%),
    linear-gradient(180deg, rgba(255,255,255,.98), rgba(248,250,252,.98));
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  opacity: 0;
  pointer-events: none;
}

.intro.is-active{
  opacity: 1;
  pointer-events: all;
}

.intro__content{
  display: grid;
  place-items: center;
  gap: 18px;
  /* Flat look: no card frame/shadow */
  padding: 0;
  border-radius: 0;
  background: transparent;
  box-shadow: none;
  transform: translateY(10px) scale(.98);
  opacity: 0;
}

.intro.is-active .intro__content{
  animation: introPop 900ms cubic-bezier(.2,.9,.2,1) 120ms forwards;
}

@keyframes introPop{
  to{
    transform: translateY(0) scale(1);
    opacity: 1;
  }
}

.intro__logo{
  width: min(420px, 70vw);
  height: auto;
  display: block;
  /* Flat look */
  filter: none;
}

.intro__dots{
  display: inline-flex;
  gap: 8px;
  align-items: center;
  justify-content: center;
}

.intro__dots span{
  width: 8px;
  height: 8px;
  border-radius: 999px;
  background: rgba(15, 23, 42, .35);
  transform: translateY(0);
  animation: introDot 900ms ease-in-out infinite;
}

.intro__dots span:nth-child(2){ animation-delay: 120ms; }
.intro__dots span:nth-child(3){ animation-delay: 240ms; }

@keyframes introDot{
  0%, 100%{ transform: translateY(0); opacity: .45; }
  50%{ transform: translateY(-7px); opacity: .95; }
}

.intro.is-exit{
  animation: introFadeOut 720ms ease forwards;
}

@keyframes introFadeOut{
  to{ opacity: 0; }
}

/* Respect reduced motion */
@media (prefers-reduced-motion: reduce){
  .intro, .intro__content, .intro__dots span{
    animation: none !important;
    transition: none !important;
  }
}

/* =========================================
   Intro SVG logo animation (First visit only)
   Method (1): stroke-dasharray / stroke-dashoffset
   ========================================= */
.intro__logo-svg {
  display: flex;
  align-items: center;
  justify-content: center;
}

.intro__logo-svg .logo-svg {
  width: min(560px, 82vw);
  height: auto;
}

/* Initial states */
.intro__logo-svg .logo-svg .st1 {
  /* keep original fill color but hide it during draw */
  fill-opacity: 0;
  stroke: #0068b7;
  stroke-width: 6;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-dasharray: var(--dash, 0);
  stroke-dashoffset: var(--dash, 0);
}

.intro__logo-svg .logo-svg .st0 {
  opacity: 0;
  transition: opacity 600ms ease;
}

/* Draw animation starts when intro becomes active */
.intro.is-active .intro__logo-svg .logo-svg .st1.draw {
  animation: intro-draw 1400ms ease forwards;
  animation-delay: calc(var(--i, 0) * 8ms);
}

@keyframes intro-draw {
  to {
    stroke-dashoffset: 0;
  }
}

/* Fill + cleanup */
.intro.is-active .intro__logo-svg .logo-svg.is-filled .st1 {
  fill-opacity: 1;
  stroke-opacity: 0;
  transition: fill-opacity 600ms ease, stroke-opacity 400ms ease;
}

.intro.is-active .intro__logo-svg .logo-svg.is-filled.is-white .st0 {
  opacity: 1;
}



/* ===== Docs Showcase (Certificates) ===== */
.docs-showcase{margin-top:28px}
.docs-header{max-width:860px}
.docs-kicker{display:inline-flex;align-items:center;gap:8px;font-weight:700;letter-spacing:.06em;text-transform:uppercase;font-size:12px;color:rgba(255,255,255,.72)}
.docs-title{margin:10px 0 8px;font-size:20px;color:#fff}
.docs-lead{margin:0 0 14px;color:rgba(255,255,255,.76);line-height:1.8}
.docs-stats{display:flex;gap:12px;flex-wrap:wrap;margin:14px 0 10px}
.docs-stat{display:flex;align-items:baseline;gap:8px;padding:10px 12px;border-radius:12px;background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.10);backdrop-filter: blur(6px)}
.docs-stat .num{font-size:18px;font-weight:800;color:#fff}
.docs-stat .lbl{font-size:12px;color:rgba(255,255,255,.68)}

.docs-controls{display:flex;gap:10px;flex-wrap:wrap;margin:18px 0 16px}
.chip{appearance:none;border:1px solid rgba(255,255,255,.16);background:rgba(255,255,255,.06);color:rgba(255,255,255,.82);padding:10px 14px;border-radius:999px;cursor:pointer;font-weight:700;font-size:13px;transition:.2s}
.chip:hover{transform:translateY(-1px);background:rgba(255,255,255,.10)}
.chip.active{background:rgba(255,255,255,.16);border-color:rgba(255,255,255,.28);color:#fff}

.docs-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}
@media (max-width: 980px){.docs-grid{grid-template-columns:repeat(2,minmax(0,1fr));}}
@media (max-width: 620px){.docs-grid{grid-template-columns:1fr;}}

.doc-card{display:grid;grid-template-rows:auto 1fr;gap:10px;align-items:start;text-align:left;border:1px solid rgba(255,255,255,.12);background:rgba(255,255,255,.06);border-radius:16px;padding:12px;cursor:pointer;transition:.18s;min-height:280px}
.doc-card:hover{transform:translateY(-2px);border-color:rgba(255,255,255,.22);background:rgba(255,255,255,.08)}
.doc-card .thumb{display:block;border-radius:12px;overflow:hidden;background:rgba(0,0,0,.2);aspect-ratio: 4 / 3}
.doc-card .thumb img{width:100%;height:100%;object-fit:cover;display:block;transform:scale(1.02)}
.doc-card .meta{display:grid;gap:6px;padding:2px 2px 6px}
.doc-card .tag{display:inline-flex;width:max-content;font-size:12px;font-weight:800;color:#0b4ea2;background:rgba(255,255,255,.88);padding:6px 10px;border-radius:999px}
.doc-card .name{font-size:14px;font-weight:800;color:#fff;line-height:1.35}
.doc-card .note{font-size:12px;color:rgba(255,255,255,.68)}

.docs-accordion{margin-top:18px}
.doc-acc{border:1px solid rgba(255,255,255,.14);background:rgba(255,255,255,.04);border-radius:16px;padding:10px 12px}
.doc-acc summary{cursor:pointer;font-weight:800;color:#fff}
.acc-body{margin-top:12px}
.acc-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}
@media (max-width: 980px){.acc-grid{grid-template-columns:repeat(2,minmax(0,1fr));}}
@media (max-width: 620px){.acc-grid{grid-template-columns:1fr;}}
.acc-item{display:grid;gap:10px;align-items:start;text-align:left;border:1px solid rgba(255,255,255,.12);background:rgba(255,255,255,.06);border-radius:14px;padding:12px;cursor:pointer;transition:.18s}
.acc-item:hover{transform:translateY(-2px);border-color:rgba(255,255,255,.22);background:rgba(255,255,255,.08)}
.acc-item img{width:100%;height:160px;object-fit:cover;border-radius:10px;background:rgba(0,0,0,.2)}
.acc-item span{font-weight:800;color:#fff;font-size:13px;line-height:1.3}

.doc-lightbox{position:fixed;inset:0;display:none;z-index:9999}
.doc-lightbox.active{display:block}
.lb-backdrop{position:absolute;inset:0;background:rgba(0,0,0,.7)}
.lb-panel{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);width:min(1100px,92vw);max-height:88vh;overflow:hidden;border-radius:18px;border:1px solid rgba(255,255,255,.18);background:#0b0f18;box-shadow:0 30px 80px rgba(0,0,0,.55)}
.lb-close{position:absolute;right:14px;top:12px;width:40px;height:40px;border-radius:10px;border:1px solid rgba(255,255,255,.14);background:rgba(255,255,255,.06);color:#fff;font-size:22px;cursor:pointer}
.lb-close:hover{background:rgba(255,255,255,.12)}
.lb-head{padding:18px 60px 12px 18px;border-bottom:1px solid rgba(255,255,255,.10)}
.lb-title{font-weight:900;color:#fff;font-size:16px}
.lb-sub{margin-top:6px;color:rgba(255,255,255,.68);font-size:12px}
.lb-media{position:relative;display:grid;place-items:center;background:#0b0f18}
.lb-media img{max-width:100%;max-height:62vh;object-fit:contain;display:block;padding:14px}
.lb-nav{position:absolute;top:50%;transform:translateY(-50%);width:44px;height:44px;border-radius:999px;border:1px solid rgba(255,255,255,.14);background:rgba(255,255,255,.06);color:#fff;font-size:28px;cursor:pointer;display:grid;place-items:center}
.lb-nav:hover{background:rgba(255,255,255,.12)}
.lb-nav.prev{left:12px}
.lb-nav.next{right:12px}
.lb-foot{display:flex;justify-content:flex-end;gap:12px;padding:12px 18px;border-top:1px solid rgba(255,255,255,.10)}
.lb-open{color:#9cc6ff;text-decoration:none;font-weight:800}
.lb-open:hover{text-decoration:underline}



/* ================================
   Certificates Section – Light Theme
   ================================ */

.section-certificates {
  background: #f7f9fc;
  color: #1f2a44;
}

/* headings */
.section-certificates .docs-kicker { color: #6b7a99; }
.section-certificates .docs-title { color: #0f1e3a; }
.section-certificates .docs-lead  { color: #445066; }

/* stats */
.section-certificates .docs-stat {
  background: #ffffff;
  border: 1px solid #e2e8f0;
}
.section-certificates .docs-stat .num { color: #0b4ea2; }
.section-certificates .docs-stat .lbl { color: #6b7280; }

/* filter chips */
.section-certificates .chip {
  background: #ffffff;
  border: 1px solid #dbe2ea;
  color: #334155;
}
.section-certificates .chip.active {
  background: #eaf1ff;
  border-color: #0b4ea2;
  color: #0b4ea2;
}

/* cards */
.section-certificates .doc-card {
  background: #ffffff;
  border: 1px solid #e5e7eb;
}
.section-certificates .doc-card .name { color: #111827; }
.section-certificates .doc-card .note { color: #6b7280; }
.section-certificates .doc-card .tag  { background: #eef4ff; color: #0b4ea2; }

/* ensure section title text is readable even if section-dark styles existed */

}

/* ===============================================
   Documents UI (Masterbatch + Certificates)
   - clean cards / accordion / modal
   =============================================== */

.u-nowrap { white-space: nowrap; }

.doc-showcase{
  margin-top: 28px;
  padding: 22px 22px 16px;
  border: 1px solid rgba(25,55,85,.14);
  border-radius: 16px;
  background: linear-gradient(180deg, rgba(255,255,255,.95), rgba(248,249,250,.95));
  box-shadow: 0 10px 30px rgba(0,0,0,.06);
}

.doc-showcase__head{
  display: grid;
  gap: 6px;
  margin-bottom: 14px;
}

.doc-showcase__title{
  font-size: 18px;
  letter-spacing: .02em;
  color: #193755;
}

.doc-showcase__lead{
  font-size: 14px;
  color: rgba(25,55,85,.72);
  margin: 0;
}

.segmented{
  display: inline-flex;
  padding: 6px;
  border-radius: 999px;
  border: 1px solid rgba(25,55,85,.18);
  background: rgba(255,255,255,.75);
  gap: 6px;
  margin-bottom: 14px;
}

.segmented__btn{
  appearance: none;
  border: 0;
  border-radius: 999px;
  padding: 10px 14px;
  font-size: 13px;
  color: rgba(25,55,85,.75);
  background: transparent;
  cursor: pointer;
  transition: background .18s ease, color .18s ease, transform .18s ease;
}

.segmented__btn:hover{ transform: translateY(-1px); }

.segmented__btn.is-active{
  background: #193755;
  color: #fff;
}

.doc-showcase__body{ position: relative; }

.doc-panel{
  display: none;
  position: relative;
  margin: 0;
  border-radius: 14px;
  overflow: hidden;
  border: 1px solid rgba(25,55,85,.14);
  background: #fff;
}

.doc-panel.is-active{ display: block; }

.doc-image{
  width: 100%;
  height: auto;
  display: block;
}

.doc-panel figcaption{
  padding: 10px 12px 14px;
  font-size: 12px;
  color: rgba(25,55,85,.72);
}

.doc-zoom{
  position: absolute;
  right: 12px;
  bottom: 10px;
  border: 1px solid rgba(25,55,85,.16);
  background: rgba(255,255,255,.9);
  backdrop-filter: blur(8px);
  padding: 8px 10px;
  border-radius: 999px;
  font-size: 12px;
  cursor: pointer;
  color: #193755;
  transition: transform .18s ease, box-shadow .18s ease;
}

.doc-zoom:hover{
  transform: translateY(-1px);
  box-shadow: 0 10px 20px rgba(0,0,0,.10);
}

/* Certificates gallery */
.doc-gallery{ margin-top: 10px; }

.doc-gallery__lead{
  margin-bottom: 14px;
  display: grid;
  gap: 6px;
}

.doc-gallery__title{
  font-size: 18px;
  color: #fff;
  margin: 0;
}

.section-dark .doc-gallery__desc{
  margin: 0;
  font-size: 14px;
  color: rgba(255,255,255,.82);
}

.doc-grid{
  display: grid;
  gap: 16px;
}

.doc-grid--featured{ grid-template-columns: repeat(2, minmax(0, 1fr)); }
.doc-grid--cards{ grid-template-columns: repeat(3, minmax(0, 1fr)); }

.doc-card{
  position: relative;
  border-radius: 16px;
  overflow: hidden;
  border: 1px solid rgba(255,255,255,.14);
  background: rgba(255,255,255,.06);
  box-shadow: 0 14px 34px rgba(0,0,0,.18);
  cursor: pointer;
  transition: transform .18s ease, box-shadow .18s ease, background .18s ease;
}

.doc-card:hover{
  transform: translateY(-2px);
  background: rgba(255,255,255,.09);
  box-shadow: 0 18px 42px rgba(0,0,0,.22);
}

.doc-card__thumb{
  aspect-ratio: 16 / 10;
  background: rgba(255,255,255,.06);
}

.doc-card__thumb img{
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top center;
  display: block;
}

.doc-card__meta{
  padding: 12px 14px 14px;
}

.doc-card__kicker{
  font-size: 11px;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: rgba(255,255,255,.74);
  margin-bottom: 6px;
}

.doc-card__title{
  font-size: 14px;
  line-height: 1.4;
  color: #fff;
  margin: 0 0 10px 0;
}

.doc-card__tags{
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.tag{
  display: inline-flex;
  align-items: center;
  padding: 6px 10px;
  border-radius: 999px;
  font-size: 11px;
  background: rgba(0,188,212,.18);
  color: #fff;
  border: 1px solid rgba(0,188,212,.25);
}

.tag--ghost{
  background: rgba(255,255,255,.10);
  border-color: rgba(255,255,255,.16);
  color: rgba(255,255,255,.86);
}

.doc-card__action{
  position: absolute;
  right: 12px;
  bottom: 12px;
  font-size: 12px;
  color: rgba(255,255,255,.85);
  background: rgba(25,55,85,.65);
  border: 1px solid rgba(255,255,255,.14);
  padding: 6px 10px;
  border-radius: 999px;
}

.doc-card--compact .doc-card__thumb{ aspect-ratio: 4 / 3; }
.doc-card--compact .doc-card__title{ margin-bottom: 0; }

/* Pattern blocks */
.doc-pattern{
  margin-top: 26px;
  padding-top: 18px;
  border-top: 1px solid rgba(255,255,255,.14);
}

.doc-pattern__title{
  color: #fff;
  font-size: 16px;
  margin: 0 0 6px 0;
}

.doc-pattern__desc{
  margin: 0 0 12px 0;
  font-size: 13px;
  color: rgba(255,255,255,.78);
}

/* Accordion */
.doc-accordion{ display: grid; gap: 10px; }

.doc-acc{
  border-radius: 14px;
  overflow: hidden;
  border: 1px solid rgba(255,255,255,.14);
  background: rgba(255,255,255,.06);
}

.doc-acc[open]{ background: rgba(255,255,255,.08); }

.doc-acc__sum{
  list-style: none;
  display: grid;
  grid-template-columns: 46px 1fr auto;
  gap: 10px;
  align-items: center;
  padding: 12px 14px;
  cursor: pointer;
}

.doc-acc__sum::-webkit-details-marker{ display:none; }

.doc-acc__no{
  width: 38px;
  height: 38px;
  border-radius: 12px;
  display: grid;
  place-items: center;
  font-weight: 700;
  color: #193755;
  background: rgba(0,188,212,.85);
}

.doc-acc__title{
  display: block;
  font-size: 13px;
  color: #fff;
  font-weight: 600;
}

.doc-acc__sub{
  display: block;
  font-size: 12px;
  color: rgba(255,255,255,.72);
  margin-top: 3px;
}

.doc-acc__hint{
  font-size: 12px;
  color: rgba(255,255,255,.72);
  border: 1px solid rgba(255,255,255,.16);
  padding: 6px 10px;
  border-radius: 999px;
}

.doc-acc__body{
  padding: 0 14px 14px;
  display: grid;
  gap: 12px;
}

.doc-acc__preview{
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid rgba(255,255,255,.14);
}

.doc-acc__preview img{
  width: 100%;
  height: auto;
  display: block;
}

.doc-acc__buttons{
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

/* Small button */
.btn-sm{
  padding: 10px 12px !important;
  font-size: 13px !important;
}

/* Modal */
.doc-modal{
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: none;
}

.doc-modal.is-open{ display: block; }

.doc-modal__backdrop{
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,.6);
}

.doc-modal__dialog{
  position: relative;
  max-width: min(980px, calc(100vw - 28px));
  max-height: min(92vh, 980px);
  margin: 4vh auto 0;
  background: #0f1f2e;
  border: 1px solid rgba(255,255,255,.14);
  border-radius: 18px;
  overflow: hidden;
  box-shadow: 0 26px 60px rgba(0,0,0,.35);
}

.doc-modal__close{
  position: absolute;
  top: 10px;
  right: 10px;
  width: 42px;
  height: 42px;
  border-radius: 999px;
  border: 1px solid rgba(255,255,255,.16);
  background: rgba(255,255,255,.10);
  color: #fff;
  font-size: 22px;
  cursor: pointer;
}

.doc-modal__content{
  padding: 56px 16px 10px;
  overflow: auto;
  max-height: 78vh;
}

.doc-modal__content img{
  width: 100%;
  height: auto;
  display: block;
  border-radius: 10px;
  background: #fff;
}

.doc-modal__caption{
  padding: 12px 16px 16px;
  color: rgba(255,255,255,.86);
  font-size: 13px;
}

/* Responsive */
@media (max-width: 900px){
  .doc-grid--featured{ grid-template-columns: 1fr; }
  .doc-grid--cards{ grid-template-columns: 1fr 1fr; }
}

@media (max-width: 560px){
  .doc-grid--cards{ grid-template-columns: 1fr; }
  .segmented{ width: 100%; justify-content: space-between; }
  .segmented__btn{ flex: 1; text-align: center; }
}

/* Footer logo (use the intro NIKKEN logo asset) */
.footer-logo{
  height: 34px;
  width: auto;
  display: block;
  margin: 0 0 12px 0;
  filter: brightness(0) invert(1);
  opacity: .92;
}

/* ===============================================
   Documents UI (Masterbatch + Certificates)
   - clean cards / accordion / modal
   =============================================== */

.u-nowrap { white-space: nowrap; }

.doc-showcase{
  margin-top: 28px;
  padding: 22px 22px 16px;
  border: 1px solid rgba(25,55,85,.14);
  border-radius: 16px;
  background: linear-gradient(180deg, rgba(255,255,255,.95), rgba(248,249,250,.95));
  box-shadow: 0 10px 30px rgba(0,0,0,.06);
}

.doc-showcase__head{
  display: grid;
  gap: 6px;
  margin-bottom: 14px;
}

.doc-showcase__title{
  font-size: 18px;
  letter-spacing: .02em;
  color: #193755;
}

.doc-showcase__lead{
  font-size: 14px;
  color: rgba(25,55,85,.72);
  margin: 0;
}

.segmented{
  display: inline-flex;
  padding: 6px;
  border-radius: 999px;
  border: 1px solid rgba(25,55,85,.18);
  background: rgba(255,255,255,.75);
  gap: 6px;
  margin-bottom: 14px;
}

.segmented__btn{
  appearance: none;
  border: 0;
  border-radius: 999px;
  padding: 10px 14px;
  font-size: 13px;
  color: rgba(25,55,85,.75);
  background: transparent;
  cursor: pointer;
  transition: background .18s ease, color .18s ease, transform .18s ease;
}

.segmented__btn:hover{ transform: translateY(-1px); }

.segmented__btn.is-active{
  background: #193755;
  color: #fff;
}

.doc-showcase__body{ position: relative; }

.doc-panel{
  display: none;
  position: relative;
  margin: 0;
  border-radius: 14px;
  overflow: hidden;
  border: 1px solid rgba(25,55,85,.14);
  background: #fff;
}

.doc-panel.is-active{ display: block; }

.doc-image{
  width: 100%;
  height: auto;
  display: block;
}

.doc-panel figcaption{
  padding: 10px 12px 14px;
  font-size: 12px;
  color: rgba(25,55,85,.72);
}

.doc-zoom{
  position: absolute;
  right: 12px;
  bottom: 10px;
  border: 1px solid rgba(25,55,85,.16);
  background: rgba(255,255,255,.9);
  backdrop-filter: blur(8px);
  padding: 8px 10px;
  border-radius: 999px;
  font-size: 12px;
  cursor: pointer;
  color: #193755;
  transition: transform .18s ease, box-shadow .18s ease;
}

.doc-zoom:hover{
  transform: translateY(-1px);
  box-shadow: 0 10px 20px rgba(0,0,0,.10);
}

/* Certificates gallery */
.doc-gallery{ margin-top: 10px; }

.doc-gallery__lead{
  margin-bottom: 14px;
  display: grid;
  gap: 6px;
}

.doc-gallery__title{
  font-size: 18px;
  color: #fff;
  margin: 0;
}

.section-dark .doc-gallery__desc{
  margin: 0;
  font-size: 14px;
  color: rgba(255,255,255,.82);
}

.doc-grid{
  display: grid;
  gap: 16px;
}

.doc-grid--featured{ grid-template-columns: repeat(2, minmax(0, 1fr)); }
.doc-grid--cards{ grid-template-columns: repeat(3, minmax(0, 1fr)); }

.doc-card{
  position: relative;
  border-radius: 16px;
  overflow: hidden;
  border: 1px solid rgba(255,255,255,.14);
  background: rgba(255,255,255,.06);
  box-shadow: 0 14px 34px rgba(0,0,0,.18);
  cursor: pointer;
  transition: transform .18s ease, box-shadow .18s ease, background .18s ease;
}

.doc-card:hover{
  transform: translateY(-2px);
  background: rgba(255,255,255,.09);
  box-shadow: 0 18px 42px rgba(0,0,0,.22);
}

.doc-card__thumb{
  aspect-ratio: 16 / 10;
  background: rgba(255,255,255,.06);
}

.doc-card__thumb img{
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top center;
  display: block;
}

.doc-card__meta{
  padding: 12px 14px 14px;
}

.doc-card__kicker{
  font-size: 11px;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: rgba(255,255,255,.74);
  margin-bottom: 6px;
}

.doc-card__title{
  font-size: 14px;
  line-height: 1.4;
  color: #fff;
  margin: 0 0 10px 0;
}

.doc-card__tags{
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.tag{
  display: inline-flex;
  align-items: center;
  padding: 6px 10px;
  border-radius: 999px;
  font-size: 11px;
  background: rgba(0,188,212,.18);
  color: #fff;
  border: 1px solid rgba(0,188,212,.25);
}

.tag--ghost{
  background: rgba(255,255,255,.10);
  border-color: rgba(255,255,255,.16);
  color: rgba(255,255,255,.86);
}

.doc-card__action{
  position: absolute;
  right: 12px;
  bottom: 12px;
  font-size: 12px;
  color: rgba(255,255,255,.85);
  background: rgba(25,55,85,.65);
  border: 1px solid rgba(255,255,255,.14);
  padding: 6px 10px;
  border-radius: 999px;
}

.doc-card--compact .doc-card__thumb{ aspect-ratio: 4 / 3; }
.doc-card--compact .doc-card__title{ margin-bottom: 0; }

/* Pattern blocks */
.doc-pattern{
  margin-top: 26px;
  padding-top: 18px;
  border-top: 1px solid rgba(255,255,255,.14);
}

.doc-pattern__title{
  color: #fff;
  font-size: 16px;
  margin: 0 0 6px 0;
}

.doc-pattern__desc{
  margin: 0 0 12px 0;
  font-size: 13px;
  color: rgba(255,255,255,.78);
}

/* Accordion */
.doc-accordion{ display: grid; gap: 10px; }

.doc-acc{
  border-radius: 14px;
  overflow: hidden;
  border: 1px solid rgba(255,255,255,.14);
  background: rgba(255,255,255,.06);
}

.doc-acc[open]{ background: rgba(255,255,255,.08); }

.doc-acc__sum{
  list-style: none;
  display: grid;
  grid-template-columns: 46px 1fr auto;
  gap: 10px;
  align-items: center;
  padding: 12px 14px;
  cursor: pointer;
}

.doc-acc__sum::-webkit-details-marker{ display:none; }

.doc-acc__no{
  width: 38px;
  height: 38px;
  border-radius: 12px;
  display: grid;
  place-items: center;
  font-weight: 700;
  color: #193755;
  background: rgba(0,188,212,.85);
}

.doc-acc__title{
  display: block;
  font-size: 13px;
  color: #fff;
  font-weight: 600;
}

.doc-acc__sub{
  display: block;
  font-size: 12px;
  color: rgba(255,255,255,.72);
  margin-top: 3px;
}

.doc-acc__hint{
  font-size: 12px;
  color: rgba(255,255,255,.72);
  border: 1px solid rgba(255,255,255,.16);
  padding: 6px 10px;
  border-radius: 999px;
}

.doc-acc__body{
  padding: 0 14px 14px;
  display: grid;
  gap: 12px;
}

.doc-acc__preview{
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid rgba(255,255,255,.14);
}

.doc-acc__preview img{
  width: 100%;
  height: auto;
  display: block;
}

.doc-acc__buttons{
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

/* Small button */
.btn-sm{
  padding: 10px 12px !important;
  font-size: 13px !important;
}

/* Modal */
.doc-modal{
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: none;
}

.doc-modal.is-open{ display: block; }

.doc-modal__backdrop{
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,.6);
}

.doc-modal__dialog{
  position: relative;
  max-width: min(980px, calc(100vw - 28px));
  max-height: min(92vh, 980px);
  margin: 4vh auto 0;
  background: #0f1f2e;
  border: 1px solid rgba(255,255,255,.14);
  border-radius: 18px;
  overflow: hidden;
  box-shadow: 0 26px 60px rgba(0,0,0,.35);
}

.doc-modal__close{
  position: absolute;
  top: 10px;
  right: 10px;
  width: 42px;
  height: 42px;
  border-radius: 999px;
  border: 1px solid rgba(255,255,255,.16);
  background: rgba(255,255,255,.10);
  color: #fff;
  font-size: 22px;
  cursor: pointer;
}

.doc-modal__content{
  padding: 56px 16px 10px;
  overflow: auto;
  max-height: 78vh;
}

.doc-modal__content img{
  width: 100%;
  height: auto;
  display: block;
  border-radius: 10px;
  background: #fff;
}

.doc-modal__caption{
  padding: 12px 16px 16px;
  color: rgba(255,255,255,.86);
  font-size: 13px;
}

/* Responsive */
@media (max-width: 900px){
  .doc-grid--featured{ grid-template-columns: 1fr; }
  .doc-grid--cards{ grid-template-columns: 1fr 1fr; }
}

@media (max-width: 560px){
  .doc-grid--cards{ grid-template-columns: 1fr; }
  .segmented{ width: 100%; justify-content: space-between; }
  .segmented__btn{ flex: 1; text-align: center; }
}


/* ===== Fixes v4 (docs thumbs + modal header) ===== */
.docs-grid .thumb img{
  object-position: top center !important;
  transform: none !important;
}

body.modal-open header.header{
  display: none !important;
}



/* ===== Masterbatch 2-column layout ===== */
#masterbatch .mb-layout{
  display: grid;
  grid-template-columns: 0.95fr 1.05fr;
  /*gap: 80px;*/
  align-items: start;
}

#masterbatch .mb-layout__left{ display: grid; /*gap: 18px;*/ }
#masterbatch .mb-layout__right{ position: relative; }

@media (max-width: 980px){
  #masterbatch .mb-layout{
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
  align-items: start;
}
}

/* ===== Responsive Lightbox (Masterbatch) ===== */
#mbLightbox.lightbox{
  cursor: zoom-out;
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  background: rgba(0,0,0,.72);
  z-index: 9999;
  display: none;
}

#mbLightbox.lightbox.is-open{ display: block; }

#mbLightbox .lightbox__stage{
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  padding: 64px 16px 18px;
}

#mbLightbox img{
  max-width: min(980px, calc(100vw - 40px));
  max-height: calc(100vh - 140px);
  width: auto;
  height: auto;
  display: block;
  border: 5px solid #fff;
  box-shadow: 0 0 20px rgba(0,0,0,.6);
  border-radius: 2px;
  background: #fff;
}

#mbLightbox .lightbox__caption{
  margin-top: 10px;
  color: rgba(255,255,255,.88);
  font-size: 13px;
  text-align: center;
  max-width: min(980px, calc(100vw - 40px));
}

#mbLightbox .lightbox__button{
  cursor: pointer;
  position: absolute;
  width: 34px;
  height: 34px;
  border: 0;
  background-color: transparent;
  background-size: 34px 34px;
  background-repeat: no-repeat;
  opacity: .85;
  transition: transform .18s ease, opacity .18s ease;
}

#mbLightbox .lightbox__button:hover{ opacity: 1; transform: scale(1.25); }

#mbLightbox .lightbox__close{
  right: 12px;
  top: 12px;
  background-image: url("images/lightbox/close.png");
}

#mbLightbox .lightbox__nav{
  top: 50%;
  margin-top: -17px;
}

#mbLightbox .lightbox__nav--next{
  right: 12px;
  background-image: url("images/lightbox/next.png");
}

#mbLightbox .lightbox__nav--prev{
  left: 12px;
  background-image: url("images/lightbox/previous.png");
}

/* blur background like sample */
body.mb-blurred > *:not(#mbLightbox){
  filter: blur(2px);
  transform: translate3d(0,0,0);
}


#masterbatch .mb-layout__right{ justify-self: end; width: 100%; }
/* ===== Fixed header removed - now using absolute positioning ===== */
/* ===== MB Lightbox improvements ===== */
#mbLightbox.lightbox{
  cursor: zoom-out;
}
#mbLightbox .lightbox__stage{
  pointer-events: none; /* allow overlay click to close */
}
#mbLightbox .lightbox__stage img,
#mbLightbox .lightbox__button,
#mbLightbox .lightbox__caption{
  pointer-events: auto;
}

/* ===============================================
   Global Image Lightbox (Modern & Stylish)
   =============================================== */

.global-lightbox {
  position: fixed;
  inset: 0;
  z-index: 10000;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
}

.global-lightbox.is-open {
  opacity: 1;
  visibility: visible;
}

.global-lightbox__backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.92);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.global-lightbox__content {
  position: relative;
  max-width: 90vw;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  z-index: 1;
  animation: lightboxZoomIn 0.3s ease-out;
}

@keyframes lightboxZoomIn {
  from {
    transform: scale(0.8);
    opacity: 0;
  }
  to {
    transform: scale(1);
    opacity: 1;
  }
}

.global-lightbox__image {
  max-width: 100%;
  max-height: 85vh;
  width: auto;
  height: auto;
  object-fit: contain;
  border-radius: 12px;
  box-shadow: 0 25px 80px rgba(0, 0, 0, 0.5);
  transition: transform 0.3s ease;
}

.global-lightbox__caption {
  margin-top: 20px;
  padding: 12px 24px;
  background: rgba(255, 255, 255, 0.95);
  color: #193755;
  border-radius: 24px;
  font-size: 14px;
  font-weight: 500;
  max-width: 600px;
  text-align: center;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.global-lightbox__close {
  position: absolute;
  top: -50px;
  right: 0;
  width: 44px;
  height: 44px;
  background: rgba(255, 255, 255, 0.15);
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-radius: 50%;
  color: #FFFFFF;
  font-size: 28px;
  line-height: 1;
  cursor: pointer;
  transition: all 0.3s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.global-lightbox__close:hover {
  background: rgba(255, 255, 255, 0.25);
  border-color: rgba(255, 255, 255, 0.5);
  transform: rotate(90deg);
}

.global-lightbox__prev,
.global-lightbox__next {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 50px;
  height: 50px;
  background: rgba(255, 255, 255, 0.15);
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-radius: 50%;
  color: #FFFFFF;
  font-size: 32px;
  line-height: 1;
  cursor: pointer;
  transition: all 0.3s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.global-lightbox__prev {
  left: -70px;
}

.global-lightbox__next {
  right: -70px;
}

.global-lightbox__prev:hover,
.global-lightbox__next:hover {
  background: rgba(255, 255, 255, 0.25);
  border-color: rgba(255, 255, 255, 0.5);
  transform: translateY(-50%) scale(1.1);
}

/* Responsive adjustments */
@media (max-width: 768px) {
  .global-lightbox__prev {
    left: 10px;
  }
  
  .global-lightbox__next {
    right: 10px;
  }
  
  .global-lightbox__close {
    top: 10px;
    right: 10px;
  }
  
  .global-lightbox__prev,
  .global-lightbox__next,
  .global-lightbox__close {
    width: 40px;
    height: 40px;
    font-size: 24px;
  }
  
  .global-lightbox__caption {
    font-size: 12px;
    padding: 8px 16px;
    margin-top: 12px;
  }
}


/* ===============================================
   Contact Form
   =============================================== */

.contact-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: flex-start;
}

.contact-content {
  padding-right: 40px;
}

.contact-content .section-title {
  color: #00BCD4;
}

.contact-content .section-subtitle {
  color: #FFFFFF;
}

.contact-content p {
  color: #FFFFFF;
  opacity: 0.95;
  font-size: 16px;
  line-height: 1.9;
}

.contact-form {
  background: rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 12px;
  padding: 40px;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.form-group label {
  color: #FFFFFF;
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.3px;
}

.required {
  color: #FF6B6B;
  margin-left: 4px;
}

.form-group input,
.form-group textarea {
  background: rgba(255, 255, 255, 0.95);
  border: 1px solid rgba(255, 255, 255, 0.3);
  border-radius: 8px;
  padding: 12px 16px;
  font-size: 15px;
  font-family: inherit;
  color: #193755;
  transition: all 0.3s ease;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: #999;
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  background: #FFFFFF;
  border-color: #00BCD4;
  box-shadow: 0 0 0 3px rgba(0, 188, 212, 0.1);
}

.form-group textarea {
  resize: vertical;
  min-height: 120px;
  font-size: 14px;
  line-height: 1.6;
}

.btn-submit {
  background: linear-gradient(135deg, #00BCD4 0%, #0097A7 100%);
  color: #FFFFFF;
  border: none;
  border-radius: 8px;
  padding: 14px 32px;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  margin-top: 8px;
  letter-spacing: 0.5px;
}

.btn-submit:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0, 188, 212, 0.3);
}

.btn-submit:active {
  transform: translateY(0);
}

/* ===============================================
   フローティングボタン
   =============================================== */

.floating-buttons {
  position: fixed;
  bottom: 30px;
  right: 30px;
  z-index: 999;
  display: flex;
  flex-direction: column;
  gap: 15px;
}

.floating-btn {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: bold;
  font-size: 12px;
  color: #FFFFFF;
  text-align: center;
  transition: all 0.3s ease;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
  text-decoration: none;
  padding: 0;
}

.floating-btn-download {
  background-color: #00BCD4;
}

.floating-btn-download:hover {
  background-color: #00A8C4;
  transform: scale(1.1);
  box-shadow: 0 6px 16px rgba(0, 188, 212, 0.4);
}

.floating-btn-contact {
  background-color: #4CAF50;
}

.floating-btn-contact:hover {
  background-color: #45a049;
  transform: scale(1.1);
  box-shadow: 0 6px 16px rgba(76, 175, 80, 0.4);
}

/* Responsive */
@media (max-width: 1024px) {
  .contact-inner {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .contact-content {
    padding-right: 0;
  }

  .contact-form {
    padding: 32px;
  }
}

@media (max-width: 768px) {
  .contact-inner {
    gap: 30px;
  }

  .contact-form {
    padding: 24px;
    gap: 20px;
  }

  .form-group input,
  .form-group textarea {
    padding: 10px 12px;
    font-size: 14px;
  }

  .btn-submit {
    padding: 12px 24px;
    font-size: 15px;
  }
	
	/* Keep footer in 2 columns even on mobile; place buttons on the right */
	.footer-content {
    grid-template-columns: 1fr 1fr;
    gap: 18px;
  }

	.footer-cta{ align-items: flex-end; }

  .footer-right {
    align-items: flex-start;
  }
	
  .floating-buttons {
    bottom: 20px;
    right: 20px;
    gap: 10px;
  }

  .floating-btn {
    width: 50px;
    height: 50px;
    font-size: 10px;
  }
}
@media (max-width: 480px) {
  .section {
    padding: 40px 20px;
  }

  .section-title {
    font-size: 24px;
  }

  .section-subtitle {
    font-size: 14px;
  }

  .hero-content h1 {
    font-size: 24px;
  }

  .hero-content p {
    font-size: 12px;
  }

  .footer {
    padding: 20px;
  }

  .footer-content {
    gap: 15px;
  }

  .footer-download,
  .footer-contact {
    min-width: 140px;
    padding: 10px 20px !important;
    font-size: 12px;
  }
}



/* ===============================================
   Responsive Hamburger Menu (mobile / tablet)
   - slide-in panel from right
   - staggered item animation (JS)
   =============================================== */

.header-actions{
  display:flex;
  align-items:center;
  gap: 16px;
}

.hamburger-btn{
  display:none; /* shown on tablet/mobile */
  appearance:none;
  /* pawpark.jp っぽい：薄いブルー＋軽い境界線 */
  border:1px solid rgba(25,55,85,.18);
  /*background: rgba(215,240,255,.96);*/
  backdrop-filter: blur(10px);
  width: 44px;
  height: 44px;
  border-radius: 0; /* 真四角 */
  cursor:pointer;
  position: relative;
}

.hamburger-btn:hover{ box-shadow: 0 10px 24px rgba(0,0,0,.08); }

.hamburger-icon{
  position:absolute;
  inset:0;
  display:flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2px; /* 3本線の間隔をさらに詰める */
}

.hamburger-icon span{
  display:block;
  width: 18px;
  height: 2px;
  background: #193755;
  border-radius: 999px;
}

.mobile-menu{
  position:fixed;
  inset:0;
  z-index: 2000;
  pointer-events:none;
}

.mobile-menu__backdrop{
  position:absolute;
  inset:0;
  /* 暗くなりすぎないように薄めに */
  background: rgba(25,55,85,.04);
  opacity:0;
  transition: opacity .35s ease;

  z-index: 0;
}

.mobile-menu__panel{
  position:absolute;
  top:0;
  right:0;
  width: min(360px, 86vw);
  height: 100%;
  background: linear-gradient(180deg, #ffffff 0%, #f4fbff 100%);
  border-left: 1px solid rgba(25,55,85,.14);
  transform: translateX(100%);
  opacity: 1;
  transition: transform .45s ease;
  padding: 18px 18px 24px;
  display:flex;
  flex-direction: column;
  gap: 14px;

  z-index: 1;
}

.mobile-menu__close{
  align-self:flex-start;
  appearance:none;
  border:1px solid rgba(25,55,85,.16);
  background: rgba(25,55,85,.06);
  color:#193755;
  width: 40px;
  height: 40px;
  border-radius: 999px;
  cursor:pointer;
  font-size: 22px;
  line-height: 1;
}

.mobile-menu__list{
  display:grid;
  gap: 10px;
  padding-top: 6px;
}

.mobile-menu__item{
  display:block;
  text-decoration:none;
  color:#193755;
  font-size: 16px;
  padding: 12px 12px;
  border-radius: 12px;
  border: 1px solid rgba(25,55,85,.12);
	  background: #fff;
  transform: translateX(-25px);
  opacity: 0;
}

.mobile-menu__item:hover{
  background: rgba(25,55,85,.04);
}

.mobile-menu.is-open{
  pointer-events:auto;
}

.mobile-menu.is-open .mobile-menu__backdrop{
  opacity:1;
}

.mobile-menu.is-open .mobile-menu__panel{
  transform: translateX(0);
}

/* Breakpoints: show hamburger, hide desktop nav */
@media (max-width: 1024px){
  .nav{ display:none; }
  .hamburger-btn{ display:inline-grid; }
}

/* Footer logo (use the intro NIKKEN logo asset) */
.footer-logo{
  height: 26px;
  width: auto;
  display: block;
  margin: 0 0 12px 0;
  filter: brightness(0) invert(1);
  opacity: .92;
}

/* ===============================================
   追加：資料と完全一致させるための表用ユーティリティ
   =============================================== */

.center { text-align: center; }

.note {
  display: inline-block;
  margin-top: 6px;
  font-size: 12px;
  color: #193755;
}

.table-spacer {
  height: 28px;
}

.effect-notes {
  margin-top: 18px;
  padding-left: 22px;
  color: #193755;
  font-size: 14px;
  line-height: 1.7;
}

.text-red { color: #E53935; font-weight: 700; }
.text-green { color: #2E7D32; font-weight: 700; }
.text-blue { color: #1E88E5; font-weight: 700; }
.text-gray { color: #B0BEC5; font-weight: 700; }



/* Table blocks (match provided brochure style) */
.table-block{
  margin: 28px 0;
}
.table-title-box{
  display: inline-block;
  width: 100%;
  padding: 14px 16px;
  /* border: 2px solid #222;*/
  font-weight: 800;
  text-align: center;
  font-size: 20px;
  background: #fff;
  margin: 0 0 14px 0;
  line-height: 1.25;
}
.text-purple{ color: #7E57C2; font-weight: 700; }

/* Added for Merits / Market sections */
.responsive-img{
  width: 100%;
  max-width: 1100px;
  height: auto;
  display: block;
  margin: 20px auto 0;
}
.section-lead{
  margin-top: 10px;
  color: rgba(0,0,0,0.7);
  text-align: center;
}
.section-dark .section-lead{
  color: rgba(255,255,255,0.8);
}


/* === Merits / Market additions === */
.merits-grid{
  display:grid;
  grid-template-columns: 1fr;
  gap: 22px;
  margin-top: 18px;
}

.merits-card{
  background: rgba(255,255,255,0.75);
  border: 1px solid rgba(0,0,0,0.06);
  border-radius: 14px;
  padding: 20px 18px;
}
.section-dark .merits-card{
  background: rgba(255,255,255,0.85);
}
.merits-heading{
  font-size: 18px;
  margin: 0 0 10px 0;
  font-weight: 700;
}
.merits-list{
  margin: 0;
  padding-left: 1.2em;
  line-height: 1.75;
}
.section-lead{
  margin: 14px 0 18px 0;
  line-height: 1.9;
}
.market-figure{
  margin-top: 6px;
}
.market-note{
  margin-top: 10px;
  font-size: 12px;
  opacity: 0.75;
}

/* Market chart additional notes */
.market-notes{
  max-width: 980px;
  margin: 14px auto 0;
  padding: 14px 16px;
  border-radius: 14px;
  background: rgba(25,55,85,.04);
  border: 1px solid rgba(25,55,85,.10);
}

.market-notes__list{
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: marketNote;
  color: rgba(25,55,85,.78);
  font-size: 13px;
  line-height: 1.65;
}

.market-notes__list li{
  margin: 6px 0;
  padding-left: 2.4em;
  position: relative;
  counter-increment: marketNote;
}

.market-notes__list li::before{
  content: "注" counter(marketNote) ".";
  position: absolute;
  left: 0;
  top: 0;
  width: 2.1em;
  color: rgba(25,55,85,.88);
  font-weight: 700;
}

/* SDGs callout (PPT-like green framed banner) */
.market-notes__highlight,
.market-highlight{
text-align-last: center;
  max-width: 980px;
  margin: 16px auto 0;
  padding: 14px 18px;
  border-radius: 6px;
  border: 2px solid #1aa85a;
  background: #fff;
  color: #1aa85a;
  font-weight: 800;
  line-height: 1.7;
  text-align: left;
  box-shadow: 0 10px 26px rgba(0,0,0,.06);
}

@media (max-width: 900px){
  .market-notes__highlight,
  .market-highlight{
    max-width: 100%;
    margin: 14px 12px 0;
  }
}
/* Force single-column layout for text-heavy sections */
.section-inner--single{
  grid-template-columns: 1fr !important;
  gap: 34px;
  align-items: flex-start;
}

#market .section-lead{ color:#193755; }

/* force section titles left aligned */
.section-title,
.section-subtitle,
.section-lead {
  text-align: left;
}

/* === Unified section spacing === */
.section-title{
  margin-bottom: 6px;
}
.section-subtitle{
  margin-top: 0;
  margin-bottom: 14px;
}
.section-lead{
  margin-top: 0;
  margin-bottom: 24px;
  line-height: 1.9;
}
.section-inner > *:not(:first-child){
  margin-top: 0;
}

/* === Refined unified spacing (v7) === */
.section-title{ margin-bottom: 4px; }
.section-subtitle{ margin-bottom: 10px; }
.section-lead{
  margin-bottom: 16px;
  line-height: 1.8;
}
.section-inner > :not(.section-title):not(.section-subtitle):not(.section-lead){
  margin-top: 0;
}

/* === v8 spacing normalization for Merits / Market === */
/* remove extra top margins that caused larger gaps */
#merits .merits-grid{
  margin-top: 0;
}
#merits .merits-card{
  margin-top: 0;
}
#market .market-figure{
  margin-top: 0;
}
#market img{
  margin-top: 0;
}

/* unify spacing AFTER section-lead for all sections */
.section-lead{
  margin-bottom: 14px;
}

/* ensure first content block doesn't add extra space */
.section-lead + *{
  margin-top: 0 !important;
}


/* === v9: Fix large vertical gaps caused by .section-inner grid gap (80px) === */
#merits .section-inner,
#market .section-inner{
  display: block;
  gap: 0;
 grid-template-columns: 1fr;
}
#merits .section-inner > *,
#market .section-inner > *{
  width: 100%;
}

/* === Global Image Lightbox === */
img[data-lightbox="true"]{ cursor: zoom-in; }

.img-lightbox{
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.82);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9999;
  padding: 24px;
}

.img-lightbox__img{
  max-width: 100%;
  max-height: 100%;
  border-radius: 10px;
}

.img-lightbox__close{
  position: fixed;
  top: 18px;
  right: 22px;
  width: 44px;
  height: 44px;
  border-radius: 999px;
  border: 1px solid rgba(255,255,255,.25);
  background: rgba(0,0,0,.35);
  color: #fff;
  font-size: 28px;
  line-height: 1;
  cursor: pointer;
}
.img-lightbox__close:hover{ background: rgba(255,255,255,.12); }

/* === Disable table hover highlight (robust) === */
table tr:hover,
table tr:hover > th,
table tr:hover > td,
table td:hover,
table th:hover,
.data-table tbody tr:hover,
.data-table tbody tr:hover > td,
.data-table tbody tr:hover > th{
  background-color: inherit !important;
}
/* === v12: Keep table cell background on hover (no highlight) === */
table tr:hover,
table tr:hover > th,
table tr:hover > td,
table td:hover,
table th:hover,
.data-table tbody tr:hover,
.data-table tbody tr:hover > td,
.data-table tbody tr:hover > th{
  background-color: revert !important;
  color: revert !important;
}

/* === Layout overrides: keep About 2-col, make Effects & Master Batch 1-col === */
#effects .section-inner,
#masterbatch .section-inner{
  grid-template-columns: 1fr;
  /*gap: 34px;*/
  align-items: start;
}

#effects .section-table,
#masterbatch .section-table{
  grid-column: 1;
  width: 100%;
  margin-top: 32px;
}


/* === Fix: make Effects grid and Master Batch layout truly 1-column === */
#effects .effect-grid{
  grid-template-columns: 1fr;
  gap: 24px;
}

#masterbatch .mb-layout{
  grid-template-columns: 1fr;
  gap: 34px;
}
/* === Fix: prevent Master Batch from shrinking (stretch full width) === */
#masterbatch .section-inner{
  justify-items: stretch;
}

#masterbatch .mb-layout{
  width: 100%;
}

/* === Final fixes (validated): Master Batch full width + 1-column, Effects 1-column, About untouched === */
#masterbatch .section-inner{
  grid-template-columns: 1fr;
  justify-items: stretch;
  gap: 34px;
  align-items: start;
}

#masterbatch .mb-layout{
  grid-template-columns: 1fr;
  width: 100%;
  gap: 32px;
}

#effects .effect-grid{
  grid-template-columns: 1fr;
  gap: 24px;
}



/* === Master Batch: make tables stretch full width (fix narrow look) === */
#masterbatch table{
  width: 100%;
}

/* === Master Batch width fix (authoritative) === */
.section-inner{ width: 100%; }
#masterbatch .section-inner{ justify-items: stretch; width: 100%; }
#masterbatch .mb-layout, #masterbatch .section-table, #masterbatch table, #masterbatch .data-table{ width: 100%; max-width: 100%; }

/* === Master Batch: show 2-page datasheet side-by-side (PC) === */
#masterbatch .doc-showcase .segmented{
  display: none;
}

#masterbatch .doc-showcase__body{
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 18px;
  margin-top: 18px;
}

/* Force both panels visible even if tab JS exists */
#masterbatch .doc-panel{
  display: block !important;
  opacity: 1 !important;
  transform: none !important;
}

/* Make images look like "documents" */
#masterbatch .doc-image{
  width: 100%;
  height: auto;
  display: block;
  border-radius: 12px;
  border: 1px solid #e5e7eb;
  box-shadow: 0 6px 18px rgba(0,0,0,0.06);
}

/* SP: stack */
@media (max-width: 900px){
  #masterbatch .doc-showcase__body{
    grid-template-columns: 1fr;
  }
}

/* table borders: vertical & horizontal */
table th, table td {
  border-left: 1px solid #ddd;
  border-bottom: 1px solid #ddd;
}
table th:last-child,
table td:last-child {
  border-right: 1px solid #ddd;
}