/* Responsive Enhancement Added — Non-destructive scaling version (vw-based) */

/* =================================================================
   ABOUT PAGE STYLES
   ================================================================= */

/* =================================================================
   0. CSS Variables & Root Settings
   ================================================================= */
:root {
  --vw-with-scrollbar: 100vw;
  --header-height-pc: calc(88 * var(--vw-with-scrollbar) / 1920);
  --header-height-sp: calc(64 * var(--vw-with-scrollbar) / 400);
}

/* =================================================================
   1. HERO ABOUT SECTION
   ================================================================= */

.hero-about {
  position: relative;
  width: 100%;
  height: 70vh;
  min-height: 1000px;
  min-height: calc(1000 * var(--vw-with-scrollbar) / 1920);
  overflow: visible;
  margin: 0;
  padding: 0px 0 0 0;
  background-color: #000;
  margin-bottom: 458px;
  margin-bottom: calc(458 * var(--vw-with-scrollbar) / 1920);
}

.hero-about__container {
  position: relative;
  width: 100%;
  height: 100%;
  margin: 0;
  padding: 0;
}

.hero-about__content {
  position: absolute;
  top: 200px;
  top: calc(200 * var(--vw-with-scrollbar) / 1920);
  left: 90px;
  left: calc(90 * var(--vw-with-scrollbar) / 1920);
  z-index: 3;
  max-width: 600px;
  max-width: calc(600 * var(--vw-with-scrollbar) / 1920);
}

.hero-about__image {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  will-change: transform;
  transition: opacity 0.3s ease, visibility 0.3s ease;
}

.hero-about__image.is-fixed {
  position: fixed;
  top: 0;
  bottom: auto;
  left: 0;
  width: 100%;
  height: 100vh;
  z-index: 0;
  transform: none !important;
}

.hero-about__image picture {
  position: relative;
  width: 100%;
  height: 100%;
  display: block;
  overflow: hidden;
}

.hero-about__image img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  object-position: center bottom;
  display: block;
  transition: object-position 0.3s ease;
}

.hero-about__image.is-fixed img {
  object-position: center top;
}

.hero-about__image.is-fixed.scrolled-far img {
  object-position: center top;
}

/* Gradient overlay animation */
.hero-about__image .gradient-overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  width: 100%;
  height: 0;
  background: linear-gradient(to top, #ffdd57, transparent);
  animation: gradientOnce 3s ease-in-out forwards;
  pointer-events: none;
  z-index: 2;
}

.hero-about__image.is-fixed .gradient-overlay {
  display: none;
}

@keyframes gradientOnce {
  0% {
    height: 0;
    opacity: 0;
  }

  30% {
    height: 50%;
    opacity: 1;
  }

  70% {
    height: 50%;
    opacity: 1;
  }

  100% {
    height: 50%;
    opacity: 0;
  }
}

.hero-about__title-section {
  margin-bottom: 50px;
  margin-bottom: calc(50 * var(--vw-with-scrollbar) / 1920);
}

.line-parts {
  display: inline-block;
  overflow: hidden;
}

.line-bg-black {
  background-color: #000;
  padding-right: 50px;
  padding-right: calc(50 * var(--vw-with-scrollbar) / 1920);
}

.line-bg-black2 {
  background-color: #000;
  padding-right: 0px;
}

/* Title Section Line Parts Animation */
.hero-about__title-section .line-parts {
  width: fit-content;
  display: inline-block;
  overflow: hidden;
  position: relative;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s cubic-bezier(0.075, 0.82, 0.165, 1);
  padding-top: 5px;
}

.hero-about__title-section .line-parts.is-active {
  transform: scale(1);
}

.hero-about__title-section .line-parts:before,
.hero-about__title-section .line-parts:after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  transition: transform 0.45s cubic-bezier(0.36, 0.48, 0.02, 0.98);
}

.hero-about__title-section .line-parts:before {
  transform: translateX(-100%);
}

.hero-about__title-section .line-parts:after {
  transform: translateX(0);
}

.hero-about__title-section .line-parts.is-active:before {
  transform: translateX(0);
}

.hero-about__title-section .line-parts.is-active:after {
  transform: translateX(100%);
  transition: transform 0.6s ease 0.4s;
}

.hero-about__title-section .line-parts.line-bg-black:before,
.hero-about__title-section .line-parts.line-bg-black:after {
  background-color: #000;
}

.hero-about__title-section .line-parts:before {
  z-index: 1;
}

.hero-about__title-section .line-parts:after {
  z-index: 5;
}

.hero-about__title-section .line-parts .hero-about__title-en,
.hero-about__title-section .line-parts .hero-about__title-jp {
  position: relative;
  z-index: 2;
}

.hero-about__main {
  position: absolute;
  top: 120%;
  right: 100px;
  right: calc(100 * var(--vw-with-scrollbar) / 1920);
  transform: translateY(-50%);
  max-width: 815px;
  max-width: calc(815 * var(--vw-with-scrollbar) / 1920);
  text-align: center;
  z-index: 10;
  display: flex;
  flex-direction: column;
  gap: 20px;
  gap: calc(20 * var(--vw-with-scrollbar) / 1920);
}

.hero-about__title {
  margin: 0;
  padding: 0;
}

.hero-about__title-en {
  font-size: 240px;
  font-size: clamp(120px, calc(240 * var(--vw-with-scrollbar) / 1920), 240px);
  font-weight: 900;
  margin: 0;
  line-height: 0.73;
  font-family: var(--font-english);
  font-style: italic;
  text-decoration: underline;
  text-decoration-color: #fff;
  text-decoration-thickness: 2px;
  text-decoration-thickness: calc(2 * var(--vw-with-scrollbar) / 1920);
  text-underline-offset: 2px;
  text-underline-offset: calc(2 * var(--vw-with-scrollbar) / 1920);
  color: #fff;
  width: fit-content;
}

.hero-about__title-jp {
  font-size: 40px;
  font-size: clamp(20px, calc(40 * var(--vw-with-scrollbar) / 1920), 40px);
  color: #fff;
  font-weight: bold;
  text-align: left;
  font-family: var(--font-japanese);
  display: block;
  width: fit-content;
  margin: 0;
}

.hero-about__messages {
  display: flex;
  flex-direction: column;
  gap: 12px;
  gap: calc(12 * var(--vw-with-scrollbar) / 1920);
  margin: 0 0 20px 0;
  margin: 0 0 calc(20 * var(--vw-with-scrollbar) / 1920) 0;
}

.hero-about__message {
  display: inline-block;
  background: #ffdd57;
  color: #000;
  font-family: var(--font-japanese);
  font-weight: bold;
  letter-spacing: 0.08em;
  line-height: 1.3;
  font-size: 40px;
  font-size: clamp(24px, calc(40 * var(--vw-with-scrollbar) / 1920), 40px);
  padding: 15px 28px;
  padding: calc(15 * var(--vw-with-scrollbar) / 1920)
    calc(28 * var(--vw-with-scrollbar) / 1920);
}

.hero-about__description {
  color: #fff;
  background-color: #000;
  padding: 10px;
  padding: calc(10 * var(--vw-with-scrollbar) / 1920);
  font-size: 18px;
  font-size: clamp(14px, calc(18 * var(--vw-with-scrollbar) / 1920), 18px);
  line-height: 1.5;
  letter-spacing: 0.08em;
  font-weight: 700;
  text-align: left;
  position: relative;
  z-index: 10;
}

/* =================================================================
   2. STRENGTHS SECTION
   ================================================================= */

.strengths {
  position: relative;
  width: 100%;
  padding-top: 160px;
  padding-top: calc(160 * var(--vw-with-scrollbar) / 1920);
  padding-bottom: 120px;
  padding-bottom: calc(120 * var(--vw-with-scrollbar) / 1920);
  background-color: #000;
  overflow: hidden;
  z-index: 1;
}

.strengths__container {
  max-width: 1500px;
  max-width: calc(1500 * var(--vw-with-scrollbar) / 1920);
  margin: 0 auto;
  padding: 0 60px;
  padding: 0 calc(60 * var(--vw-with-scrollbar) / 1920);
  text-align: center;
}

/* ===== Title ===== */
.strengths__title {
  margin-bottom: 60px;
  margin-bottom: calc(60 * var(--vw-with-scrollbar) / 1920);
}

.strengths__title-en {
  display: block;
  font-size: 150px;
  font-size: clamp(50px, calc(150 * var(--vw-with-scrollbar) / 1920), 150px);
  font-weight: 900;
  color: #fff;
  line-height: 0.9;
  font-style: italic;
  margin-bottom: -10px;
  margin-bottom: calc(-10 * var(--vw-with-scrollbar) / 1920);
  text-transform: uppercase;
  font-family: var(--font-english);
  text-decoration: underline;
  text-underline-offset: 2px;
  text-underline-offset: calc(2 * var(--vw-with-scrollbar) / 1920);
  text-decoration-thickness: 3px;
  text-decoration-thickness: calc(3 * var(--vw-with-scrollbar) / 1920);
}

.strengths__title-jp {
  display: block;
  color: #fff;
  font-size: 24px;
  font-size: clamp(18px, calc(24 * var(--vw-with-scrollbar) / 1920), 24px);
  font-weight: bold;
  letter-spacing: 0.15em;
  margin-top: -10px;
  margin-top: calc(-10 * var(--vw-with-scrollbar) / 1920);
}

/* ===== Content ===== */
.strengths__content {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  text-align: left;
  gap: 12px;
  gap: calc(12 * var(--vw-with-scrollbar) / 1920);
}

.strengths__text {
  background-color: #fff;
  color: #000;
  font-size: 80px;
  font-size: clamp(40px, calc(80 * var(--vw-with-scrollbar) / 1920), 80px);
  font-weight: bold;
  padding: 0px;
  display: inline-block;
  letter-spacing: 0.05em;
  line-height: 1.3;
  font-family: var(--font-japanese);
  text-align: left;
  white-space: nowrap;
  width: fit-content;
}

.strengths__text--1 {
  padding-right: 0px;
}

.strengths__text--2 {
  padding-right: 0;
}

/* =================================================================
   3. STRENGTH ITEMS SECTION
   ================================================================= */

.strength-items {
  position: relative;
  background-color: #fff;
  z-index: 1;
}

.strength-items__container {
  max-width: 1200px;
  max-width: calc(1200 * var(--vw-with-scrollbar) / 1920);
  margin: 0 auto;
}

/* ===== Individual Strength Item ===== */
.strength-item {
  position: relative;
  width: 100vw;
  left: 50%;
  transform: translateX(-50%);
  height: auto;
  min-height: 800px;
  min-height: calc(800 * var(--vw-with-scrollbar) / 1920);
  overflow: hidden;
}

.strength-item__image img {
  width: 100%;
  height: auto;
  max-height: 100%;
  object-fit: contain;
  object-position: center;
  display: block;
}

/* ===== Desktop Content ===== */
.strength-item__content {
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  background-color: rgba(245, 245, 245, 0.9);
  padding: 30px 25px;
  padding: calc(30 * var(--vw-with-scrollbar) / 1920)
    calc(25 * var(--vw-with-scrollbar) / 1920);
  width: 420px;
  width: calc(420 * var(--vw-with-scrollbar) / 1920);
  text-align: center;
  line-height: 1.6;
}

.strength-item__number {
  font-size: 64px;
  font-size: clamp(40px, calc(64 * var(--vw-with-scrollbar) / 1920), 64px);
  font-weight: 900;
  color: #000;
  margin-bottom: 10px;
  margin-bottom: calc(10 * var(--vw-with-scrollbar) / 1920);
  font-family: var(--font-english);
  opacity: 0;
  transform: translateY(30px);
  transform: translateY(calc(30 * var(--vw-with-scrollbar) / 1920));
  transition: opacity 0.6s ease, transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.strength-item__title {
  font-size: 24px;
  font-size: clamp(18px, calc(24 * var(--vw-with-scrollbar) / 1920), 24px);
  font-weight: 700;
  margin-bottom: 15px;
  margin-bottom: calc(15 * var(--vw-with-scrollbar) / 1920);
  color: #000;
  line-height: 1.4;
  opacity: 0;
  transform: translateY(30px);
  transform: translateY(calc(30 * var(--vw-with-scrollbar) / 1920));
  transition: opacity 0.6s ease, transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
  transition-delay: 0.1s;
}

.title-line {
  opacity: 0;
  transform: translateY(30px);
  transform: translateY(calc(30 * var(--vw-with-scrollbar) / 1920));
  transition: opacity 0.6s ease, transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
  transition-delay: 0.1s;
  display: inline-block;
}

.strength-item__description {
  font-size: 17px;
  font-size: clamp(14px, calc(17 * var(--vw-with-scrollbar) / 1920), 17px);
  color: #000;
  margin: 0;
  font-weight: 500;
  line-height: 1.6;
  text-align: left;
}

.strength-item__description p {
  opacity: 0.3;
  transition: opacity 0.3s ease;
  transition-delay: 0.3s;
}

/* Strength Item Animation States */
.strength-item.animate-in .strength-item__number,
.strength-item.animate-in .strength-item__title,
.strength-item.animate-in .title-line {
  opacity: 1;
  transform: translateY(0);
}

.strength-item.animate-in .strength-item__description p {
  opacity: 1;
}

/* ===== Mobile Elements (Hidden on Desktop) ===== */
.strength-item__header,
.strength-item__footer {
  display: none;
}

/* =================================================================
   4. COOPERATION SECTION
   ================================================================= */

.cooperation {
  position: relative;
  background-color: #000;
  padding: 120px 0;
  padding: calc(120 * var(--vw-with-scrollbar) / 1920) 0;
  color: #fff;
  z-index: 1;
}

.cooperation__container {
  max-width: 1130px;
  max-width: calc(1130 * var(--vw-with-scrollbar) / 1920);
  margin: 0 auto;
  padding: 0 60px;
  padding: 0 calc(60 * var(--vw-with-scrollbar) / 1920);
  text-align: center;
}

/* ===== Title ===== */
.cooperation__title {
  margin-bottom: 60px;
  margin-bottom: calc(60 * var(--vw-with-scrollbar) / 1920);
}

.cooperation__title-en {
  display: block;
  font-size: 150px;
  font-size: clamp(50px, calc(150 * var(--vw-with-scrollbar) / 1920), 150px);
  font-weight: 900;
  color: #fff;
  line-height: 0.9;
  font-style: italic;
  margin-bottom: -10px;
  margin-bottom: calc(-10 * var(--vw-with-scrollbar) / 1920);
  text-transform: uppercase;
  font-family: var(--font-english);
  text-decoration: underline;
  text-underline-offset: 2px;
  text-underline-offset: calc(2 * var(--vw-with-scrollbar) / 1920);
  text-decoration-thickness: 3px;
  text-decoration-thickness: calc(3 * var(--vw-with-scrollbar) / 1920);
}

.cooperation__title-jp {
  display: block;
  color: #fff;
  font-size: 24px;
  font-size: clamp(18px, calc(24 * var(--vw-with-scrollbar) / 1920), 24px);
  font-weight: bold;
  letter-spacing: 0.15em;
  margin-top: -10px;
  margin-top: calc(-10 * var(--vw-with-scrollbar) / 1920);
}

/* ===== Intro ===== */
.cooperation__intro {
  margin: 0 auto 80px;
  margin: 0 auto calc(80 * var(--vw-with-scrollbar) / 1920);
  width: fit-content;
  text-align: left;
  flex-direction: column;
}

.cooperation__intro-text {
  font-size: 18px;
  font-size: clamp(14px, calc(18 * var(--vw-with-scrollbar) / 1920), 18px);
  font-weight: bold;
  line-height: 1.8;
  color: #fff;
  margin-bottom: 10px;
  margin-bottom: calc(10 * var(--vw-with-scrollbar) / 1920);
  font-family: var(--font-japanese);
  opacity: 0.3;
  filter: blur(5px);
  filter: blur(calc(5 * var(--vw-with-scrollbar) / 1920));
  transition: opacity 0.8s ease, filter 0.8s ease;
}

/* Cooperation Text Animation State */
.cooperation__intro-text.animate-blur-clear {
  opacity: 1;
  filter: blur(0);
}

/* ===== Partners ===== */
.cooperation__partners {
  display: flex;
  flex-direction: column;
  gap: 60px;
  gap: calc(60 * var(--vw-with-scrollbar) / 1920);
}

.cooperation__partner {
  display: flex;
  align-items: flex-start;
  gap: 80px;
  gap: calc(80 * var(--vw-with-scrollbar) / 1920);
  text-align: left;
}

.cooperation__partner-image {
  flex-shrink: 0;
  width: 200px;
  width: calc(200 * var(--vw-with-scrollbar) / 1920);
  height: 200px;
  height: calc(200 * var(--vw-with-scrollbar) / 1920);
  overflow: hidden;
}

.cooperation__partner-image img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  object-position: center;
}

.cooperation__partner-content {
  flex: 1;
}

.cooperation__partner-description {
  font-size: 18px;
  font-size: clamp(14px, calc(18 * var(--vw-with-scrollbar) / 1920), 18px);
  font-weight: bold;
  line-height: 1.8;
  color: #fff;
  margin-bottom: 30px;
  margin-bottom: calc(30 * var(--vw-with-scrollbar) / 1920);
  font-family: var(--font-japanese);
  letter-spacing: 0.02em;
  opacity: 0.3;
  filter: blur(5px);
  filter: blur(calc(5 * var(--vw-with-scrollbar) / 1920));
  transition: opacity 0.8s ease, filter 0.8s ease;
}

/* Cooperation Partner Description Animation State */
.cooperation__partner-description.animate-blur-clear {
  opacity: 1;
  filter: blur(0);
}

.cooperation__partner-name {
  background-color: #ffdd57;
  color: #000;
  padding: 10px 20px;
  padding: calc(10 * var(--vw-with-scrollbar) / 1920)
    calc(20 * var(--vw-with-scrollbar) / 1920);
  font-weight: bold;
  font-size: 20px;
  font-size: clamp(14px, calc(20 * var(--vw-with-scrollbar) / 1920), 20px);
  display: inline-block;
  font-family: var(--font-japanese);
  opacity: 0.3;
  filter: blur(5px);
  filter: blur(calc(5 * var(--vw-with-scrollbar) / 1920));
  transition: opacity 0.8s ease, filter 0.8s ease;
}

/* Cooperation Partner Name Animation State */
.cooperation__partner-name.animate-blur-clear {
  opacity: 1;
  filter: blur(0);
}

/* =================================================================
   4. LINE PARTS ANIMATION
   ================================================================= */

/* Hero About Messages Animation */
.hero-about__messages .line-parts {
  width: 100%;
  padding: 4px 8px;
  padding: calc(4 * var(--vw-with-scrollbar) / 1920)
    calc(8 * var(--vw-with-scrollbar) / 1920);
  display: block;
  overflow: hidden;
  position: relative;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s cubic-bezier(0.075, 0.82, 0.165, 1);
}

.hero-about__messages .line-parts.is-active {
  transform: scale(1);
}

.hero-about__messages .line-parts:before,
.hero-about__messages .line-parts:after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  transition: transform 0.45s cubic-bezier(0.36, 0.48, 0.02, 0.98);
}

.hero-about__messages .line-parts.is-active:before {
  transform: translateX(0);
}

.hero-about__messages .line-parts.is-active:after {
  transform: translateX(100%);
  transition: transform 0.6s ease 0.4s;
}

.hero-about__messages .line-parts.line-bg-gold:before,
.hero-about__messages .line-parts.line-bg-gold:after {
  background-color: #ffdd57;
}

.hero-about__messages .line-parts:before {
  z-index: 1;
}

.hero-about__messages .line-parts:after {
  z-index: 5;
}

.hero-about__messages .line-parts .line-txt {
  position: relative;
  z-index: 2;
  text-align: center;
}

/* Strengths Content Animation */
.strengths__content .line-parts {
  width: fit-content;
  padding: 4px 8px;
  padding: calc(4 * var(--vw-with-scrollbar) / 1920)
    calc(8 * var(--vw-with-scrollbar) / 1920);
  display: inline-block;
  overflow: hidden;
  position: relative;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s cubic-bezier(0.075, 0.82, 0.165, 1);
}

.strengths__content .line-parts.is-active {
  transform: scale(1);
}

.strengths__content .line-parts:before,
.strengths__content .line-parts:after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  transition: transform 0.45s cubic-bezier(0.36, 0.48, 0.02, 0.98);
}

.strengths__content .line-parts.is-active:before {
  transform: translateX(0);
}

.strengths__content .line-parts.is-active:after {
  transform: translateX(100%);
  transition: transform 0.6s ease 0.4s;
}

.strengths__content .line-parts.line-bg-white:before,
.strengths__content .line-parts.line-bg-white:after {
  background-color: #fff;
}

.strengths__content .line-parts:before {
  z-index: 1;
}

.strengths__content .line-parts:after {
  z-index: 5;
}

.strengths__content .line-parts .line-txt {
  position: relative;
  z-index: 2;
}

/* Desktop/Mobile visibility */
.strengths__content--desktop {
  display: flex;
  margin: 0 auto;
  width: fit-content;
}

.strengths__content--mobile {
  display: none;
}

/* =================================================================
   5. RESPONSIVE DESIGN - MOBILE
   ================================================================= */

@media (max-width: 1024px) {
  /* Hero About */
  .hero-about {
    height: 70vh;
    min-height: 905.78px;
    min-height: calc(905.78 * 100vw / 400);
    max-height: 1400px;
    max-height: calc(1400 * 100vw / 400);
    overflow: visible;
    position: relative;
    padding-top: 30px;
    padding-top: calc(30 * 100vw / 400);
    margin-bottom: 100px;
    margin-bottom: calc(100 * 100vw / 400);
  }

  .hero-about__container {
    height: 100%;
    margin: 0;
    padding: 0;
    width: 100vw;
    position: relative;
  }

  .hero-about__content {
    left: 24px;
    left: calc(24 * 100vw / 400);
    top: 50px;
    top: calc(50 * 100vw / 400);
    max-width: 250px;
    max-width: calc(250 * 100vw / 400);
  }

  .hero-about__title-section {
    margin-bottom: 30px;
    margin-bottom: calc(30 * 100vw / 400);
  }

  .hero-about__title-jp {
    font-size: 24px;
    font-size: calc(24 * 100vw / 400);
  }

  .hero-about__message {
    font-size: 30px;
    font-size: calc(30 * 100vw / 400);
    padding: 7px;
    padding: calc(7 * 100vw / 400);
    text-align: left;
    width: fit-content;
  }

  .hero-about__description {
    background: #000;
    font-size: 16px;
    font-size: calc(16 * 100vw / 400);
    line-height: 1.5;
    padding: 10px;
    padding: calc(10 * 100vw / 400);
    margin: 0;
    text-align: left;
    z-index: 11;
    position: relative;
  }

  .hero-about__main {
    left: 0;
    transform: none;
    top: 69%;
    width: 100%;
    max-width: none;
    text-align: center;
    padding: 0 24px;
    padding: 0 calc(24 * 100vw / 400);
    z-index: 10;
    position: absolute;
  }

  .hero-about__image {
    position: absolute;
    top: 0;
    margin: 70px 0px;
    margin: calc(70 * 100vw / 400) 0px;
    left: 0;
    width: 100vw;
    height: 100%;
    z-index: 0;
    overflow: hidden;
    clip-path: inset(0);
  }

  .hero-about__image.is-fixed {
    position: fixed;
    top: 0;
    margin: 0;
    height: 100vh;
  }

  .hero-about__image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center bottom;
    transition: object-position 0.3s ease;
  }

  .hero-about__image.is-fixed img {
    object-position: center top;
  }

  .hero-about__image.is-fixed.scrolled-far img {
    object-position: center bottom;
  }

  .hero-about__title-en {
    font-size: 80px;
    font-size: calc(80 * 100vw / 400);
    line-height: 0.8;
    margin-bottom: 0px;
  }

  .line-bg-black {
    padding-right: 15px;
    padding-right: calc(15 * 100vw / 400);
  }

  .line-bg-black2 {
    padding-right: 0px;
  }

  /* Strengths */
  .strengths {
    padding-top: 50px;
    padding-top: calc(50 * 100vw / 400);
    padding-bottom: 0px;
    z-index: 2;
  }

  .strengths__container {
    max-width: 100%;
    padding: 0px 24px;
    padding: 0px calc(24 * 100vw / 400);
  }

  .strength-items__container {
    max-width: 100%;
  }

  .strengths__title {
    margin-bottom: 40px;
    margin-bottom: calc(40 * 100vw / 400);
    text-align: left;
  }

  .strengths__title-en {
    font-size: 50px;
    font-size: calc(50 * 100vw / 400);
    text-underline-offset: 2px;
    text-underline-offset: calc(2 * 100vw / 400);
    text-decoration-thickness: 2px;
    text-decoration-thickness: calc(2 * 100vw / 400);
    margin-bottom: 0px;
  }

  .strengths__title-jp {
    font-size: 22px;
    font-size: calc(22 * 100vw / 400);
    margin-top: 0px;
  }

  .strengths__content {
    display: block;
  }

  .strengths__text {
    width: 100%;
    margin-bottom: 5px;
    margin-bottom: calc(5 * 100vw / 400);
    font-weight: 900;
    font-size: 24px;
    font-size: calc(24 * 100vw / 400);
  }

  .strengths__text--1 {
    background-color: transparent;
    padding: 0;
  }

  .strengths__text--1 span {
    background-color: #f5f5f5;
    padding: 0px;
    display: block;
    width: fit-content;
    font-weight: 900;
  }

  .strengths__text--1 span:first-child {
    margin-bottom: 5px;
    margin-bottom: calc(5 * 100vw / 400);
  }

  .strengths__text--2 {
    width: fit-content;
  }

  /* Strength Items Mobile Layout */
  .strength-items {
    background-color: #000;
    padding: 24px;
    padding: calc(24 * 100vw / 400);
    position: relative;
    z-index: 20;
  }

  .strength-item {
    position: relative;
    width: 100%;
    left: auto;
    transform: none;
    height: auto;
    min-height: 0;
    display: flex;
    flex-direction: column;
    margin-bottom: 40px;
    margin-bottom: calc(40 * 100vw / 400);
    background-color: #fff;
  }

  .strength-item:last-child {
    margin-bottom: 0;
  }

  .strength-item__header {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    padding: 10px 0 0 10px;
    padding: calc(10 * 100vw / 400) 0 0 calc(10 * 100vw / 400);
    text-align: left;
    position: absolute;
    top: 15%;
    left: 0;
    right: 0;
    z-index: 1;
  }

  .strength-item__number {
    margin-bottom: 5px;
    margin-bottom: calc(5 * 100vw / 400);
  }

  .strength-item__header .strength-item__number {
    font-size: 64px;
    font-size: calc(64 * 100vw / 400);
    font-weight: 900;
    color: #000;
    background-color: rgba(245, 245, 245, 0.88);
    padding: 0px 8px;
    padding: 0px calc(8 * 100vw / 400);
    line-height: 1;
  }

  .strength-item__header .strength-item__title {
    font-size: 24px;
    font-size: calc(24 * 100vw / 400);
    font-weight: 700;
    color: #000;
    line-height: 1.4;
    margin: 0;
  }

  .strength-item__header .strength-item__title .title-line {
    background-color: rgba(255, 255, 255, 0.88);
    padding: 2px 4px;
    padding: calc(2 * 100vw / 400) calc(4 * 100vw / 400);
    display: inline-block;
    margin-bottom: 5px;
    margin-bottom: calc(5 * 100vw / 400);
  }

  .strength-item__image {
    order: 2;
  }

  .strength-item__image img {
    position: static;
    width: 100%;
    height: 100%;
    object-fit: cover;
  }

  .strength-item__footer {
    display: block;
    background-color: #f5f5f5;
    padding: 20px;
    padding: calc(20 * 100vw / 400);
    order: 3;
  }

  .strength-item__footer .strength-item__description {
    font-size: 16px;
    font-size: calc(16 * 100vw / 400);
    font-weight: 400px;
    letter-spacing: 4%;
    color: #333;
    line-height: 1.6;
    margin: 0;
    text-align: left;
  }

  .strength-item__content {
    display: none;
  }

  /* Cooperation */
  .cooperation {
    padding: 60px 0;
    padding: calc(60 * 100vw / 400) 0;
  }

  .cooperation__container {
    padding: 0 24px;
    padding: 0 calc(24 * 100vw / 400);
    text-align: left;
    max-width: 100%;
  }

  .cooperation__title {
    margin-bottom: 40px;
    margin-bottom: calc(40 * 100vw / 400);
  }

  .cooperation__title-en {
    font-size: 50px;
    font-size: calc(50 * 100vw / 400);
    text-underline-offset: 2px;
    text-underline-offset: calc(2 * 100vw / 400);
    text-decoration-thickness: 2px;
    text-decoration-thickness: calc(2 * 100vw / 400);
    margin-bottom: 0px;
  }

  .cooperation__title-jp {
    font-size: 22px;
    font-size: calc(22 * 100vw / 400);
    margin-top: 0px;
  }

  .cooperation__intro {
    margin-bottom: 60px;
    margin-bottom: calc(60 * 100vw / 400);
    max-width: 100%;
  }

  .cooperation__intro-text {
    font-size: 16px;
    font-size: calc(16 * 100vw / 400);
  }

  .cooperation__partners {
    gap: 35px;
    gap: calc(35 * 100vw / 400);
  }

  .cooperation__partner {
    flex-direction: column;
    align-items: flex-start;
    gap: 20px;
    gap: calc(20 * 100vw / 400);
    text-align: left;
  }

  .cooperation__partner-image {
    width: 100%;
    height: 180px;
    height: calc(180 * 100vw / 400);
  }

  .cooperation__partner-content {
    padding-top: 0;
    width: 100%;
  }

  .cooperation__partner-description {
    font-size: 16px;
    font-size: calc(16 * 100vw / 400);
    margin-bottom: 20px;
    margin-bottom: calc(20 * 100vw / 400);
    text-align: justify;
  }

  .cooperation__partner-name {
    font-size: 16px;
    font-size: calc(16 * 100vw / 400);
    padding: 5px 8px;
    padding: calc(5 * 100vw / 400) calc(8 * 100vw / 400);
  }

  /* Line Parts Animation - Mobile */
  .hero-about__messages {
    gap: 10px;
    gap: calc(10 * 100vw / 400);
  }

  .hero-about__messages .line-parts {
    width: fit-content;
    display: inline-block;
  }

  .hero-about__messages .line-parts .line-txt {
    text-align: left;
  }

  .strengths__content--desktop {
    display: none;
  }

  .strengths__content--mobile {
    display: block;
  }

  .strengths__content--mobile .line-parts {
    display: block;
    width: fit-content;
    margin-bottom: 5px;
    margin-bottom: calc(5 * 100vw / 400);
  }
}