@charset "UTF-8";
/* ========================================
   CSS Reset & Base Styles
======================================== */
html {
  scroll-behavior: smooth;
}

body {
  font-family: "Noto Sans JP", sans-serif;
  line-height: 1.6;
}

.main p {
  font-size: 2rem;
  color: #fff;
}
@media screen and (max-width: 768px) {
  .main p {
    font-size: 1.3rem;
  }
}

/* ========================================
   header & footer modified style
======================================== */

.corporate-header-wrap::before {
  min-width: 1270px!important;
}
@media screen and (max-width: 768px) {
  .corporate-header-wrap::before {
    min-width: unset!important;
  }
}
.cmn-rwd-footer {
  min-width: 1270px!important;
}
@media screen and (max-width: 768px) {
  .cmn-rwd-footer {
    min-width: unset!important;
  }
}

.l-contents {
  padding-bottom: 0!important;
}

/* ========================================
   CSS Variables
======================================== */
:root {
  --color-docomo-red: #d52b1e;
  --color-dark-navy: #1a1a2e;
  --color-light-gray: #f8f9fa;
  --color-white: #ffffff;
  --color-text-dark: #333333;
  --color-text-gray: #666666;
  --color-text-light: #999999;
  --font-size-xs: 1.2rem; /* 12px */
  --font-size-sm: 1.4rem; /* 14px */
  --font-size-base: 1.6rem; /* 16px */
  --font-size-lg: 1.8rem; /* 18px */
  --font-size-xl: 2.0rem; /* 20px */
  --font-size-2xl: 2.4rem; /* 24px */
  --font-size-3xl: 3.2rem; /* 32px */
  --font-size-4xl: 4.8rem; /* 48px */
  --font-size-5xl: 6.4rem; /* 64px */
  --font-size-6xl: 9.6rem; /* 96px */
  --spacing-xs: 0.8rem; /* 8px */
  --spacing-sm: 1.6rem; /* 16px */
  --spacing-md: 2.4rem; /* 24px */
  --spacing-lg: 3.2rem; /* 32px */
  --spacing-xl: 4.8rem; /* 48px */
  --spacing-2xl: 6.4rem; /* 64px */
  --spacing-3xl: 8.0rem; /* 80px */
  --border-radius-sm: 4px;
  --border-radius-md: 8px;
  --border-radius-lg: 12px;
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.15);
  --transition-fast: 0.15s ease;
  --transition-base: 0.3s ease;
  --transition-slow: 0.5s ease;
}
@media screen and (max-width: 768px) {
  :root {
    --spacing-md: 2.0rem; /* 20px */
    --spacing-3xl: 3.2rem; /* 32px */
  }
}

/* ========================================
   Utility Classes
======================================== */
.btn {
  display: inline-block;
  padding: 0.75rem 2rem;
  font-size: var(--font-size-base);
  font-weight: 500;
  text-align: center;
  border: none;
  border-radius: var(--border-radius-md);
  cursor: pointer;
  transition: all var(--transition-base);
  text-decoration: none;
}

.btn--primary {
  background-color: var(--color-docomo-red);
  color: var(--color-white);
}

.btn--primary:hover {
  background-color: #c02619;
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.btn--white {
  background-color: var(--color-white);
  color: var(--color-docomo-red);
  border: 2px solid var(--color-white);
}

.btn--white:hover {
  background-color: transparent;
  color: var(--color-white);
  transform: translateY(-2px);
}

.fc-black {
  color: #000!important;
}

/* ========================================
   Public link Section Styles
======================================== */
.main a {
  text-decoration: none;
  color: inherit;
}

/* ========================================
   Hero Section Styles
======================================== */
.hero {
  position: relative;
  height: 560px;
  padding-bottom: 200px;
  display: flex;
  min-width: 1270px;
  width: 100%;
  align-items: center;
  overflow: hidden;
  background-color: #000;
}
@media screen and (max-width: 768px) {
  .hero {
    min-width: unset;
    height: auto;
  }
}
.hero__background {
  --x-t: 176px;
  --rotate: 158px;
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  right: 0;
  background-image: url(/corporate/technology/rd/img/top/bg_fv.png);
  background-repeat: no-repeat;
  background-size: cover;
  clip-path: polygon(calc(50% + var(--x-t)) 0%, 100% 0%, 100% 100%, calc(50% + var(--x-t) - var(--rotate)) 100%);
}
@media screen and (max-width: 768px) {
  .hero__background {
    --x-t: 14vw;
    --rotate: 32vw;
  }
}
.hero__container {
  --logo-w: 37.8%;
  --gap: 53px;
  position: relative;
  display: flex;
  gap: var(--gap);
  z-index: 2;
  width: 1270px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}
@media screen and (max-width: 768px) {
  .hero__container {
    gap: 0;
    width: 100%;
    flex-direction: column;
    padding-top: 20px;
    margin-bottom: 6.5vw;
  }
}
.hero__container__sub-content {
  position: absolute;
  top: -50px;
  right: 0;
  display: flex;
  gap: 10px;
}
@media screen and (max-width: 768px) {
  .hero__container__sub-content {
    gap: 7px;
    position: relative;
    top: unset;
    right: unset;
    justify-content: center;
  }
}
.hero__container__sub-content__sns {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 7px 25px;
  border-radius: 100vw;
  background-color: #fff;
}
@media screen and (max-width: 768px) {
  .hero__container__sub-content__sns {
    padding: 7px 19px;
  }
}
.hero__container__sub-content__sns p {
  color: #000;
  font-size: 1.6rem;
}
@media screen and (max-width: 768px) {
  .hero__container__sub-content__sns p {
    font-size: 1.2rem;
  }
}
.hero__container__sub-content__sns__inner {
  display: flex;
  align-items: center;
  gap: 14px;
}
.hero__container__sub-content__sns__inner__icon {
  width: 30px;
}
@media screen and (max-width: 768px) {
  .hero__container__sub-content__sns__inner__icon {
    width: 20px;
  }
}
.hero__container__sub-content__sns__inner__icon img {
  width: 100%;
}
.hero__container__sub-content__lang {
  display: flex;
  justify-content: center;
  align-items: center;
  color: #000;
  font-size: 1.6rem;
  padding: 7px 23px;
  border-radius: 100vw;
  background-color: #fff;
  letter-spacing: 0.04em;
  transition: all 0.3s ease;
}
.hero__container__sub-content__lang:hover {
  color: var(--color-docomo-red);
}
@media screen and (max-width: 768px) {
  .hero__container__sub-content__lang {
    font-size: 1.2rem;
    padding: 7px 16px;
  }
}
.hero__container__title {
  width: var(--logo-w);
}
@media screen and (max-width: 768px) {
  .hero__container__title {
    display: flex;
    justify-content: center;
    width: 100%;
    margin-top: 20px;
  }
}
@media screen and (max-width: 768px) {
  .hero__container__title img {
    width: 80vw;
  }
}
.hero__container__content {
  position: relative;
  top: 8px;
  width: calc(100% - (var(--logo-w) + var(--gap)));
}
@media screen and (max-width: 768px) {
  .hero__container__content {
    display: flex;
    align-items: center;
    flex-direction: column;
    width: 100%;
    margin-top: -1.5vw;
  }
}
.hero__container__content__subtitle {
  display: inline-block;
  font-size: 3rem;
  color: var(--color-white);
  padding: 1px 16px;
  font-weight: 500;
  background: rgba(0, 0, 0, 0.6);
}
@media screen and (max-width: 768px) {
  .hero__container__content__subtitle {
    font-size: 5.25vw;
    background-color: transparent;
  }
}
.hero__container__content__description {
  margin-top: 16px;
  font-size: min(2.2rem, 1.7vw);
  color: rgba(255, 255, 255, 0.9);
  line-height: 1.8;
  letter-spacing: 0.097em;
}
@media screen and (max-width: 768px) {
  .hero__container__content__description {
    margin-top: 0.5vw;
  }
}
.hero__container__content__description span {
  display: inline-block;
  margin-top: 6px;
  padding: 0px 16px;
  background: rgba(0, 0, 0, 0.6);
}
@media screen and (max-width: 768px) {
  .hero__container__content__description span {
    display: block;
    width: 100%;
    padding: unset;
    background-color: transparent;
    text-align: center;
    font-size: max(3vw, 1.2rem);
    margin-top: 1vw;
  }
}
@media screen and (max-width: 768px) {
  .hero__container__content__description span:first-child {
    margin: unset;
  }
}

.hero__container__content__copy {
  width: 100%;
}

@keyframes float {
  0%, 100% {
    transform: translateY(0px) rotate(0deg);
  }
  50% {
    transform: translateY(-20px) rotate(2deg);
  }
}
.second-section {
  margin-top: -200px;
}

/* ========================================
   HOT Technology Section
======================================== */
.rd-section {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: end;
  min-width: 1270px;
  width: 100%;
  padding: var(--spacing-3xl) 0;
}
@media screen and (max-width: 768px) {
  .rd-section {
    min-width: unset;
    padding: 40px 0;
  }
}

.radius-section {
  width: 100%;
  padding: 3.2em 0;
  background-color: #14134f;
  border-radius: 0 120px 0 120px;
  overflow: hidden;
  z-index: 2;
}
@media screen and (max-width: 768px) {
  .radius-section {
    border-radius: 0 40px 0 40px;
  }
}
.radius-section.type02 {
  border-radius: 120px 0 120px 0;
}
@media screen and (max-width: 768px) {
  .radius-section.type02 {
    border-radius: 56px 0 56px 0;
  }
}

.rd-container {
  width: 1270px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}
@media screen and (max-width: 768px) {
  .rd-container {
    width: 100%;
  }
}

.title {
  text-align: center;
  transition: all 0.3s ease;
}
.title img {
  margin: 0 auto;
}
@media screen and (max-width: 768px) {
  .title.t-hot-technology img {
    width: 50%;
  }
}
@media screen and (max-width: 768px) {
  .title.t-partnership img {
    width: 64%;
  }
}
.title.technology {
  text-align: left;
}
.title.technology img {
  margin: unset;
}
@media screen and (max-width: 768px) {
  .title.technology img {
    width: 78%;
  }
}
.title.t-technical-journal {
  text-align: left;
}
.title.t-technical-journal img {
  margin: unset;
}
@media screen and (max-width: 768px) {
  .title.t-technical-journal img {
    width: 65.5%;
  }
}
.title.t-blog {
  text-align: left;
}
.title.t-blog img {
  margin: unset;
}
@media screen and (max-width: 768px) {
  .title.t-blog img {
    width: 52.5%;
  }
}
@media screen and (max-width: 768px) {
  .title.t-topics img {
    width: 64%;
  }
}
.title.t-contact {
  text-align: left;
}
.title.t-contact img {
  margin: unset;
}
@media screen and (max-width: 768px) {
  .title.t-contact img {
    width: 88%;
  }
}
.title + * {
  margin-top: 38px;
}
@media screen and (max-width: 768px) {
  .title + * {
    margin-top: 20px;
  }
}

.hot-technology__grid {
  --m-x: 40px;
  --m-y: 52px;
  display: grid;
  grid-template-columns: repeat(3, minmax(320px, 1fr));
  -moz-column-gap: var(--m-x);
       column-gap: var(--m-x);
  row-gap: var(--m-y);
}
@media screen and (max-width: 768px) {
  .hot-technology__grid {
    --m-x: 0;
    --m-y: 38px;
    grid-template-columns: repeat(1, 1fr);
  }
}
.hot-technology__tags {
  --m-x: 8px;
  --m-y: 8px;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  -moz-column-gap: var(--m-x);
       column-gap: var(--m-x);
  row-gap: var(--m-y);
  width: 100%;
}
.hot-technology__tags__tag {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 1px;
  font-size: 1.8rem;
  line-height: 1em;
  border-radius: 0 10px 0 8px;
  overflow: hidden;
  cursor: pointer;
}
.hot-technology__tags__tag::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  display: block;
  width: 380%;
  height: 100%;
  background: linear-gradient(90deg, #86F3FF 0%, #FFF 12.5%, #FF94B5 25%, #FFF 37.5%, #86F3FF 50%, #FFF 62.5%, #FF94B5 75%, #FFF 87.5%, #86F3FF 100%);
  z-index: 0;
  animation-duration: 4s;
  animation-iteration-count: infinite;
  animation-timing-function: linear;
}
.hot-technology__tags__tag a {
  width: 100%;
  height: 100%;
  margin: 1px;
  padding: 8px 21px;
  color: #fff;
  font-size: 1.8rem;
  background-color: #14134f;
  border-radius: 0 10px 0 8px;
  z-index: 1;
}
.hot-technology__tags__tag a:hover,
.hot-technology__tags__tag.is-looking a {
  color: #000;
  background-color: transparent;
}
@media screen and (max-width: 768px) {
  .hot-technology__tags__tag a {
    padding: 5px 19px;
    font-size: 1.2rem;
    transition: all 0.3s ease;
  }
}
.hot-technology__tags__tag a::before {
  content: "#";
  margin-right: 0.2em;
}
.hot-technology__tags__tag:hover::before {
  animation-name: loop;
}

@keyframes loop {
  0% {
    transform: translateX(0);
  }
  100% {
    transform: translateX(-50%);
  }
}

.hot-tech-card {
  position: relative;
  overflow: hidden;
  transition: all var(--transition-base);
  padding-top: 32px;
}
@media screen and (max-width: 768px) {
  .hot-tech-card {
    --img-w: 47%;
    display: flex;
    padding-top: 20px;
  }
  .hot-tech-card:nth-child(n+7) {
    display: none;
  }
}
.hot-tech-card:hover::before, .hot-tech-card.is-looking::before {
  animation-name: loop;
}
.hot-tech-card:hover .hot-tech-card__image img, .hot-tech-card.is-looking .hot-tech-card__image img {
  transform: scale(1.05);
}
@media screen and (max-width: 768px) {
  .hot-tech-card:hover .hot-tech-card__image img, .hot-tech-card.is-looking .hot-tech-card__image img {
    transform: scale(1.2);
  }
}
.hot-tech-card:hover .hot-tech-card__content, .hot-tech-card.is-looking .hot-tech-card__content {
  top: -4px;
}
.hot-tech-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  display: block;
  width: 380%;
  height: 4px;
  background: linear-gradient(90deg, #86F3FF 0%, #FFF 12.5%, #FF94B5 25%, #FFF 37.5%, #86F3FF 50%, #FFF 62.5%, #FF94B5 75%, #FFF 87.5%, #86F3FF 100%);
  z-index: 0;
  animation-duration: 4s;
  animation-iteration-count: infinite;
  animation-timing-function: linear;
  transition: all 0.3s ease;
}
.hot-tech-card__image {
  position: relative;
  overflow: hidden;
}
@media screen and (max-width: 768px) {
  .hot-tech-card__image {
    width: var(--img-w);
    height: auto;
  }
}
.hot-tech-card__image img {
  width: 100%;
  height: 100%;
  -o-object-fit: cover;
     object-fit: cover;
  transition: transform var(--transition-slow);
  width: 100%;
}
@media screen and (max-width: 768px) {
  .hot-tech-card__image img {
    -o-object-fit: contain;
       object-fit: contain;
    height: auto;
  }
}
.hot-tech-card__image .new-badge {
  --gap: 12px;
  position: absolute;
  top: 0;
  left: 0;
  background: var(--blog-red);
  color: var(--blog-white);
  font-family: "Montserrat", "Inter", sans-serif;
  font-weight: 600;
  font-size: 1.9rem;
  padding: 3px 27px 0px 15px;
  clip-path: polygon(0 0, 100% 0, calc(100% - var(--gap)) 100%, 0 100%);
  border-radius: 0 0 4px 0;
  z-index: 1;
}
@media screen and (max-width: 768px) {
  .hot-tech-card__image .new-badge {
    --gap: 8px;
    top: -1px;
    font-size: 1.2rem;
    padding: 1px 16px 1px 9px;
  }
}
.hot-tech-card__content {
  position: relative;
  top: 0;
  padding: 26px 0 0 0;
  transition: all 0.3s ease;
}
.hot-tech-card__content::before {
  --s: 24px;
  content: "";
  position: absolute;
  top: 27px;
  right: 0;
  display: block;
  width: var(--s);
  height: var(--s);
  background: url("/corporate/technology/rd/img/top/ico_arrow_grd.svg");
  background-size: contain;
  background-repeat: no-repeat;
}
@media screen and (max-width: 768px) {
  .hot-tech-card__content::before {
    --s: 10px;
    top: 0;
  }
}
@media screen and (max-width: 768px) {
  .hot-tech-card__content {
    width: calc(100% - var(--img-w));
    padding: 0 0 0 6%;
  }
}
.hot-tech-card__content__date {
  font-size: 1.6rem;
  color: #fff;
}
@media screen and (max-width: 768px) {
  .hot-tech-card__content__date {
    font-size: 1.2rem;
    line-height: 0;
  }
}
.hot-tech-card__content__title {
  display: -webkit-box;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 3;
  overflow: hidden;
  font-size: 2.4rem;
  font-weight: 600;
  color: #fff;
  margin-top: 16px;
  line-height: 1.49em;
}
@media screen and (max-width: 768px) {
  .hot-tech-card__content__title {
    margin-top: 7px;
    font-size: 1.4rem;
  }
}
.hot-tech-card__content__tag {
  margin-top: 16px;
  line-height: 1.5em;
}
@media screen and (max-width: 768px) {
  .hot-tech-card__content__tag {
    margin-top: 5px;
  }
}
.hot-tech-card__content__tag span {
  display: inline-block;
  color: #fff;
  font-size: 1.6rem;
  margin-right: 0.2em;
}
@media screen and (max-width: 768px) {
  .hot-tech-card__content__tag span {
    font-size: 1.2rem;
  }
}
.hot-tech-card__content__tag span::before {
  content: "/ #";
}
.hot-tech-card__content__tag span:first-child::before {
  content: "#";
}
.hot-tech-card__content__tag span:last-child {
  margin-right: 0;
}
.hot-tech-card__content:hover .hot-tech-card__image img {
  transform: scale(1.05);
}

.technology-archive {
    margin-top: 40px;
}
.technology-archive a {
    display: flex;
    justify-content: flex-end;
    text-decoration: none;
    line-height: 1;
}
.technology-archive-text {
    padding-right: 10px;
    font-family: "Inter", sans-serif;;
    font-weight: 600;
    font-size: calc(16 / var(--root-fz) * 1rem);
    color: white;
}
.technology-archive-icon img{
    width: 20px;
}
@media screen and (max-width: 768px) {
  .technology-archive-text {
    padding-right: 10px;
    font-size: calc(12 / var(--root-fz) * 1rem);
  }
  .technology-archive-icon img{
    width: 12px;
  }
}

/* ========================================
   Partnership Section
======================================== */
.bg-partnership {
 width: 100%;
  margin: 0 auto;
  padding-top: 120px;
  margin-top: -120px;
  background-image: url(/corporate/technology/rd/img/top/img_partnership_bg_pc.png);
  background-size: max(800px, 60vw);
  background-position-x: left;
  background-position-y: 65%;
  background-repeat: no-repeat;
  background-color: #000;
  z-index: 1;
}
@media screen and (max-width: 1270px) {
  .bg-partnership {
    width: 1270px;
  }
}
@media screen and (max-width: 768px) {
  .bg-partnership {
    width: 100%;
    padding-top: 40px;
    margin-top: -40px;
    background-image: url(/corporate/technology/rd/img/top/img_partnership_bg_smt.png);
    background-position: center calc(-15vw + 40px);
    background-size: 100%;
  }
}

.partnership__desc {
  display: flex;
  align-items: center;
  justify-content: end;
  width: 1222px;
  height: 555px;
  margin: 0 auto;
}
@media screen and (max-width: 768px) {
  .partnership__desc {
    align-items: start;
    width: 100%;
    height: auto;
    margin-top: 55.5vw;
    margin-bottom: 40px;
  }
}
.partnership__desc__inner {
  width: 42%;
  display: flex;
  flex-direction: column;
  align-items: center;
}
@media screen and (max-width: 768px) {
  .partnership__desc__inner {
    width: 100%;
    display: unset;
    flex-direction: unset;
    align-items: unset;
  }
}
.partnership__desc__inner__title {
  font-size: var(--font-size-3xl);
  color: var(--color-white);
  margin-bottom: var(--spacing-lg);
  font-weight: 600;
  text-align: center;
}
.main .partnership__desc__inner__text {
  font-size: var(--font-size-base);
  color: rgba(255, 255, 255, 0.9);
  line-height: 1.8;
  transition: all 0.3s ease;
}
@media screen and (max-width: 768px) {
  .main  .partnership__desc__inner__text {
    font-size: 1.2rem;
  }
}

.partnership__cta {
  display: inline-block;
}

/* ========================================
   Technology Section
======================================== */
.technology__grid {
  --m-x: 21px;
  --m-y: 52px;
  --expand: 10px;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  -moz-column-gap: var(--m-x);
       column-gap: var(--m-x);
  row-gap: var(--m-y);
  width: calc(100% + var(--expand) * 2);
  margin-left: calc(var(--expand) * -1);
}
@media screen and (max-width: 768px) {
  .technology__grid {
    --m-x: 10px;
    --m-y: 16px;
    grid-template-columns: repeat(2, 1fr);
  }
}

.technology__container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

.technology__title {
  font-family: "Roboto", sans-serif;
  font-size: var(--font-size-4xl);
  color: var(--color-white);
  text-align: center;
  margin-bottom: var(--spacing-2xl);
  font-weight: 700;
}

.tech-card {
  --img-gap: 10px;
  position: relative;
  overflow: hidden;
  transition: all var(--transition-base);
  padding: 0 var(--img-gap);
}
@media screen and (max-width: 768px) {
  .tech-card {
    --img-gap: 6px;
  }
}
.tech-card:hover .tech-card__image::before, .tech-card:hover .tech-card__image::after, .tech-card.is-looking .tech-card__image::before, .tech-card.is-looking .tech-card__image::after {
  --s-x: calc(100% + var(--img-gap));
  --s-y: calc(100% + var(--img-gap));
}
.tech-card:hover .tech-card__image::before, .tech-card.is-looking .tech-card__image::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  display: block;
  width: 380%;
  height: 100%;
  background: linear-gradient(90deg, #86F3FF 0%, #FFF 12.5%, #FF94B5 25%, #FFF 37.5%, #86F3FF 50%, #FFF 62.5%, #FF94B5 75%, #FFF 87.5%, #86F3FF 100%);
  animation-name: loop;
  animation-duration: 4s;
  animation-iteration-count: infinite;
  animation-timing-function: linear;
}
.tech-card:hover .tech-card__image::after, .tech-card.is-looking .tech-card__image::after {
  opacity: 0;
}
.tech-card:hover .tech-card__content, .tech-card.is-looking .tech-card__content {
  top: -4px;
}
.tech-card__content {
  position: relative;
  top: 0;
  margin-top: 26px;
  transition: all 0.3s ease;
}
.tech-card__content::before {
  --s: 30px;
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  display: block;
  width: var(--s);
  height: var(--s);
  background: url(/corporate/technology/rd/img/top/ico_arrow_w.svg);
  background-size: contain;
  background-repeat: no-repeat;
}
@media screen and (max-width: 768px) {
  .tech-card__content::before {
    --s: 15px;
    top: 6px;
  }
}
@media screen and (max-width: 768px) {
  .tech-card__content {
    margin-top: 8px;
    padding: 0 6px 0 6px;
  }
}
.tech-card__image {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  width: calc(100% + var(--img-gap) * 2);
  margin-left: calc(var(--img-gap) * -1);
  padding: var(--img-gap);
  overflow: hidden;
}
.tech-card__image::before {
  --s-x: calc(100% - var(--img-gap));
  --s-y: calc(100% - var(--img-gap));
  content: "";
  position: absolute;
  top: calc(var(--img-gap) * -1);
  left: calc(var(--img-gap) * -1);
  display: block;
  width: var(--s-x);
  height: var(--s-y);
  background: #5299ab;
  transition: all 0.5s ease;
  z-index: -1;
}
.tech-card__image::after {
  --s-x: calc(100% - var(--img-gap));
  --s-y: calc(100% - var(--img-gap));
  content: "";
  position: absolute;
  bottom: calc(var(--img-gap) * -1);
  right: calc(var(--img-gap) * -1);
  display: block;
  width: var(--s-x);
  height: var(--s-y);
  background: #f51a77;
  transition: all 0.5s ease;
  z-index: -1;
}
.tech-card__image img {
  width: 100%;
  height: 100%;
  -o-object-fit: cover;
     object-fit: cover;
  transition: transform var(--transition-slow);
}
.tech-card__title {
  color: #fff;
  font-size: 2.4rem;
  font-weight: 600;
  line-height: 1.49em;
}
@media screen and (max-width: 768px) {
  .tech-card__title {
    font-size: 1.4rem;
  }
}
main .tech-card__text {
  margin-top: 16px;
  color: #fff;
  font-size: 1.8rem;
  font-weight: 700;
  line-height: 150%;
}
@media screen and (max-width: 768px) {
  main .tech-card__text {
    margin-top: 6px;
    font-size: 1.2rem;
  }
}
.tech-card:hover .hot-tech-card__image img {
  transform: scale(1.05);
}

.rd-loop {
  width: 100%;
  overflow: hidden;
}
.rd-loop__imgs {
  --m: 100px;
  display: flex;
  gap: var(--m);
  animation-name: rd-loop;
  animation-duration: 150s;
  animation-timing-function: linear;
  animation-iteration-count: infinite;
}
@media screen and (max-width: 768px) {
  .rd-loop__imgs {
    --m: 20px;
    animation-name: rd-loop-smt;
  }
}
@media screen and (max-width: 768px) {
  .rd-loop__imgs img {
    width: 160%;
    max-width: unset;
  }
}

@keyframes rd-loop {
  0% {
    transform: translateX(0);
  }
  100% {
    transform: translateX(-5528px);
    @media screen and (max-width: 768px) {
      transform: translateX(calc((320vw + 20px) * -1));
    }
  }
}
@keyframes rd-loop-smt {
  0% {
    transform: translateX(0);
  }
  100% {
    transform: translateX(calc((640vw + 81px) * -1));
  }
}
/* ========================================
   Technical Journal Section
======================================== */
.technical-journal {
  position: relative;
  width: 100%;
  max-width: 1523px;
  margin: 0 auto;
  min-height: 988px;
  font-family: "Inter", "Noto Sans JP", "Noto Serif JP", sans-serif;
  color: #222222;
  background: transparent;
  padding: 40px 0;
}
@media screen and (max-width: 768px) {
  .technical-journal {
    min-height: unset;
    padding: 0;
  }
}
.technical-journal__header {
  position: relative;
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  width: 100%;
}
@media screen and (max-width: 768px) {
  .technical-journal__header {
    flex-direction: column;
  }
}
.technical-journal__header__title {
  flex: 1;
}
.main .technical-journal__header__title__text {
  font-size: 2.0rem;
  color: #000;
}
@media screen and (max-width: 768px) {
  .main .technical-journal__header__title__text {
    font-size: 1.2rem;
  }
}
.technical-journal__header__cta {
  position: absolute;
  left: 546px;
  display: flex;
  align-items: start;
  flex-direction: column;
  gap: 32px;
  width: 55.5%;
  margin-top: 6px;
}
@media screen and (max-width: 768px) {
  .technical-journal__header__cta {
    position: unset;
    left: unset;
    width: 100%;
    margin-top: 34px;
  }
}
.technical-journal__header__cta__prev-area {
  display: flex;
  align-items: end;
  transform: translateY(0);
  transition: all 0.3s ease;
}
.technical-journal__header__cta__prev-area:hover,
.technical-journal__header__cta__prev-area.is-looking {
  transform: translateY(-4px);
}
@media screen and (max-width: 768px) {
  .technical-journal__header__cta__prev-area.is-looking {
    transform: translateY(-10px);
  }
}
.technical-journal__header__cta__prev-area__text {
  font-family: "Inter", "Noto Sans JP", sans-serif;
  font-weight: 600;
  font-size: 30px;
  line-height: 1;
  color: #222222;
  white-space: nowrap;
}
@media screen and (max-width: 768px) {
  .technical-journal__header__cta__prev-area__text {
    font-size: 1.7rem;
  }
}
.technical-journal__header__cta__prev-area__text::after {
  --s: 50px;
  content: "";
  display: inline-block;
  width: var(--s);
  height: var(--s);
  margin-left: 36px;
  background: url(/corporate/technology/rd/img/top/ico_arrow_b.svg);
  background-size: contain;
  background-repeat: no-repeat;
  opacity: 0.5;
}
@media screen and (max-width: 768px) {
  .technical-journal__header__cta__prev-area__text::after {
    --s: 28px;
    margin-left: 18px;
  }
}
.technical-journal__header__cta__prev-area__arrow {
  width: 54px;
  height: 54px;
  -o-object-fit: contain;
     object-fit: contain;
}
.technical-journal__header__cta__tag-cloud {
  display: flex;
  justify-content: start;
  align-items: center;
  flex-wrap: wrap;
  gap: 22px;
  width: 100%;
  max-width: 670px;
  min-height: 140px;
  margin-top: 19px;
  margin-left: 2px;
}
@media screen and (max-width: 768px) {
  .technical-journal__header__cta__tag-cloud {
    gap: 8px 22px;
    margin-top: 0;
  }
}
.technical-journal__header__cta__tag-cloud__tag {
  display: flex;
  align-items: center;
  font-family: "Inter", "Noto Sans JP", sans-serif;
  font-weight: 400;
  font-size: 18px;
  line-height: 1;
  color: #222222;
  white-space: nowrap;
  letter-spacing: 0.03em;
  transition: color 0.3s ease;
  cursor: pointer;
}
@media screen and (max-width: 768px) {
  .technical-journal__header__cta__tag-cloud__tag {
    font-size: 1.2rem;
  }
}
.technical-journal__header__cta__tag-cloud__tag:hover {
  color: #CC0033;
}
.technical-journal__header__cta__tag-cloud__tag::before {
  content: "#";
}
.technical-journal__header__cta__tag-cloud__tag::after {
  content: "";
  display: inline-block;
  width: 37px;
  height: 1px;
  background-color: #ABABAB;
  transform: translateX(12px) rotate(121deg);
  flex-shrink: 0;
}
@media screen and (max-width: 768px) {
  .technical-journal__header__cta__tag-cloud__tag::after {
    width: 23px;
  }
}
.technical-journal__header__cta__tag-cloud__tag:last-child::after {
  content: none;
}
main .technical-journal__header__text {
  font-size: 2.0rem;
}
@media screen and (max-width: 768px) {
  main .technical-journal__header__text {
    font-size: 1.2rem;
  }
}

/* 記事カードセクション */
.article-cards {
  display: flex;
  width: 100%;
  max-width: 1520px;
  padding-top: 10px;
  padding-bottom: 30px;
  margin: 0 auto 40px;
  gap: 0;
  overflow-x: auto;
}
@media screen and (max-width: 768px) {
  .article-cards {
    padding-bottom: 32px;
    margin: 0 auto 30px;
  }
}
.article-cards::-webkit-scrollbar {
  height: 13px;
  background: #EFEFEF;
  border-radius: 20px;
}
.article-cards::-webkit-scrollbar-thumb {
  background: #C03;
}
@media screen and (max-width: 768px) {
  .article-cards::-webkit-scrollbar {
    height: 6px;
  }
}
.article-cards::-webkit-scrollbar-thumb {
  background: #C03;
  border-radius: 20px;
}
.article-cards__item {
  flex-shrink: 0;
  position: relative;
  top: 0;
  display: flex;
  flex-direction: column;
  width: 380px;
  border: 1px solid #BEBEBE;
  background: #FFFFFF;
  transition: all 0.3s ease;
}
@media screen and (max-width: 768px) {
  .article-cards__item {
    width: 51vw;
  }
}
.article-cards__item::after {
  --s: 50px;
  content: "";
  position: absolute;
  bottom: 28px;
  right: 28px;
  display: block;
  width: var(--s);
  height: var(--s);
  background: url(/corporate/technology/rd/img/top/ico_arrow_b.svg);
  background-size: contain;
  background-repeat: no-repeat;
  opacity: 0.5;
}
@media screen and (max-width: 768px) {
  .article-cards__item::after {
    --s: 26px;
    bottom: 15px;
    right: 14px;
  }
}
.article-cards__item:hover {
  top: -10px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
}
.article-cards__item:focus {
  outline: 2px solid #CC0033;
  outline-offset: 2px;
}
.article-cards__item:first-child {
  transform: translateX(0px);
}
.article-cards__item:first-child:hover {
  top: -10px;
}
.article-cards__item:nth-child(2) {
  left: -1px;
}
.article-cards__item:nth-child(3) {
  left: -2px;
}
.article-cards__item:nth-child(4) {
  left: -3px;
}
.article-cards__item:nth-child(5) {
  left: -4px;
}
.article-cards__item:nth-child(6) {
  left: -5px;
}
.article-cards__item:nth-child(7) {
  left: -6px;
}
.article-cards__item:nth-child(8) {
  left: -7px;
}
.article-cards__item:nth-child(9) {
  left: -8px;
}
.article-cards__item:nth-child(10) {
  left: -9px;
}
.article-cards__item__content {
  position: relative;
  display: flex;
  padding: 60px 40px 161px 40px;
  flex-direction: column;
}
@media screen and (max-width: 768px) {
  .article-cards__item__content {
    padding: 29px 20px 92px 20px;
  }
}
.article-cards__item__content__meta {
  display: flex;
  flex-direction: column;
  gap: 24px;
}
@media screen and (max-width: 768px) {
  .article-cards__item__content__meta {
    gap: 10px;
  }
}
.article-cards__item__content__meta__volume {
  font-family: "Inter", sans-serif;
  font-weight: 300;
  font-size: 16px;
  line-height: 1;
  color: #222222;
}
@media screen and (max-width: 768px) {
  .article-cards__item__content__meta__volume {
    font-size: 1.2rem;
  }
}
.article-cards__item__content__meta__category-group {
  display: flex;
  flex-direction: column;
  gap: 18px;
}
@media screen and (max-width: 768px) {
  .article-cards__item__content__meta__category-group {
    gap: 8px;
  }
}
.article-cards__item__content__meta__category-group__category-en, .article-cards__item__content__meta__category-group__category-jp {
  font-family: "Inter", "Noto Sans JP", sans-serif;
  font-weight: 600;
  font-size: 18px;
  line-height: 1;
  color: #222222;
}
@media screen and (max-width: 768px) {
  .article-cards__item__content__meta__category-group__category-en, .article-cards__item__content__meta__category-group__category-jp {
    font-size: 1.2rem;
  }
}
.article-cards__item__content__article-content {
  display: flex;
  gap: 20px;
  flex: 1;
  margin-top: 26px;
}
@media screen and (max-width: 768px) {
  .article-cards__item__content__article-content {
    gap: 9px;
    margin-top: 11px;
  }
}
.article-cards__item__content__article-content__vertical-line {
  width: 3px;
  background-color: #CC0033;
  align-self: stretch;
  margin-top: 0.4em;
  height: calc(100% - 0.8em);
  flex-shrink: 0;
}
@media screen and (max-width: 768px) {
  .article-cards__item__content__article-content__vertical-line {
    width: 1px;
  }
}
.article-cards__item__content__article-content__title {
  font-family: "Inter", "Noto Sans JP", sans-serif;
  font-weight: 600;
  font-size: 24px;
  line-height: 1.8;
  color: #222222;
  margin: 0;
  flex: 1;
}
@media screen and (max-width: 768px) {
  .article-cards__item__content__article-content__title {
    font-size: 1.4rem;
    line-height: 1.5em;
  }
}
.article-cards__item__content__article-content__tags {
  margin-top: 28px;
}
@media screen and (max-width: 768px) {
  .article-cards__item__content__article-content__tags {
    margin-top: 12px;
  }
}
.article-cards__item__content__article-content__tags__tag {
  font-family: "Inter", "Noto Sans JP", sans-serif;
  font-weight: 400;
  font-size: 18px;
  line-height: 1;
  color: #222222;
  margin-top: auto;
}
@media screen and (max-width: 768px) {
  .article-cards__item__content__article-content__tags__tag {
    font-size: 1.2rem;
  }
}
.article-cards__item__arrow {
  position: absolute;
  bottom: 40px;
  right: 40px;
  width: 50px;
  height: 50px;
  -o-object-fit: contain;
     object-fit: contain;
}

/* ========================================
   Blog Section
======================================== */
.blog {
  background: linear-gradient(135deg, var(--color-dark-navy) 0%, #2d2d54 100%);
  padding: var(--spacing-3xl) 0;
}

.blog__container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

.blog__header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-2xl);
}

.blog__title {
  font-family: "Roboto", sans-serif;
  font-size: var(--font-size-4xl);
  color: var(--color-white);
  font-weight: 700;
}

.blog__view-all {
  color: var(--color-white);
  font-size: var(--font-size-base);
  font-weight: 500;
  transition: color var(--transition-fast);
}

.blog__view-all:hover {
  color: #ccc;
}

.blog__view-all i {
  margin-left: var(--spacing-xs);
  transition: transform var(--transition-fast);
}

.blog__view-all:hover i {
  transform: translateX(4px);
}

.blog__carousel {
  position: relative;
  overflow: hidden;
  margin-bottom: var(--spacing-lg);
}

.blog__track {
  display: flex;
  gap: var(--spacing-md);
  transition: transform var(--transition-base);
}

.blog-card {
  min-width: 280px;
  border-radius: var(--border-radius-md);
  overflow: hidden;
  transition: all var(--transition-base);
  box-shadow: var(--shadow-md);
}

.blog-card:hover {
  transform: scale(1.02);
  box-shadow: var(--shadow-lg);
}

.blog-card__image {
  height: 180px;
  overflow: hidden;
}

.blog-card__image img {
  width: 100%;
  height: 100%;
  -o-object-fit: cover;
     object-fit: cover;
}

.blog-card__content {
  padding: var(--spacing-md);
}

.blog-card__title {
  font-size: var(--font-size-base);
  font-weight: 600;
  color: var(--color-text-dark);
  margin-bottom: var(--spacing-sm);
  line-height: 1.4;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.blog-card__date {
  font-size: var(--font-size-sm);
  color: var(--color-text-light);
}

.blog__controls {
  display: flex;
  justify-content: center;
  gap: var(--spacing-sm);
}

.blog__control {
  width: 40px;
  height: 40px;
  border: none;
  border-radius: 50%;
  background-color: rgba(255, 255, 255, 0.2);
  color: var(--color-white);
  cursor: pointer;
  transition: all var(--transition-base);
  display: flex;
  align-items: center;
  justify-content: center;
}

.blog__control:hover {
  background-color: var(--color-docomo-red);
  transform: scale(1.1);
}

/* ========================================
   Topics Section
======================================== */
.topics {
  background-color: var(--color-light-gray);
  padding: var(--spacing-3xl) 0;
}

.topics__container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

.topics__header {
  text-align: center;
}

.topics__title {
  font-family: "Roboto", sans-serif;
  font-size: var(--font-size-4xl);
  color: var(--color-text-dark);
  margin-bottom: var(--spacing-sm);
  font-weight: 700;
}

.topics__subtitle {
  font-size: var(--font-size-lg);
  color: var(--color-text-gray);
}

.topics__list {
  width: min(1020px, 100%);
  margin: 0 auto;
}

.topic-item {
  position: relative;
  display: flex;
  align-items: start;
  flex-direction: column;
  gap: 22px;
  padding: 54px 60px;
  border: 1px solid #e0e0e0;
  border-bottom: none;
  -webkit-backdrop-filter: blur(20px);
          backdrop-filter: blur(20px);
  background: rgba(213, 43, 30, 0.02);
  transition: all 1s ease;
}
.topic-item:last-child {
  border-bottom: 1px solid #e0e0e0;
}
@media screen and (max-width: 768px) {
  .topic-item {
    gap: 6px;
    padding: 23px 28px;
  }
}
.topic-item::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  display: block;
  width: 100%;
  height: 100%;
  background: rgba(255, 255, 255, 0.7);
  opacity: 1;
  z-index: -1;
  transition: all 1s ease;
}
.topic-item::after {
  --s: 46px;
  content: "";
  position: absolute;
  top: 30px;
  right: 30px;
  display: block;
  width: var(--s);
  height: var(--s);
  background: url(/corporate/technology/rd/img/top/ico_arrow_b.svg);
  background-size: contain;
  background-repeat: no-repeat;
  opacity: 0.3;
}
@media screen and (max-width: 768px) {
  .topic-item::after {
    --s: 28px;
    top: 13px;
    right: 13px;
  }
}
.topic-item:hover, .topic-item.is-looking {
  -webkit-backdrop-filter: blur(10px);
          backdrop-filter: blur(10px);
}
.topic-item:hover::before, .topic-item.is-looking::before {
  opacity: 0;
}

.topic-item__date {
  font-size: var(--font-size-sm);
  color: var(--color-text-gray);
  white-space: nowrap;
  min-width: 80px;
  letter-spacing: 0.04em;
}
@media screen and (max-width: 768px) {
  .topic-item__date {
    font-size: 1.2rem;
  }
}

.topic-item__content {
  flex: 1;
}

.topic-item__title {
  margin: 0;
}

.topic-item__link {
  font-size: var(--font-size-lg);
  color: var(--color-text-dark);
  transition: color var(--transition-fast);
  font-weight: normal;
}
@media screen and (max-width: 768px) {
  .topic-item__link {
    font-size: 1.2rem;
  }
}

.topic-item__link:hover {
  color: var(--color-docomo-red);
  text-decoration: underline;
}

/* ========================================
   other links Section
======================================== */
.red-card-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(280px, 1fr));
  gap: 40px;
  transition: all 0.5s ease;
}
@media screen and (max-width: 768px) {
  .red-card-grid {
    gap: 20px;
    grid-template-columns: repeat(1, minmax(100%, 1fr));
  }
}
.red-card-grid__item {
  --img-w: 180px;
  position: relative;
  display: flex;
  transition: all 0.5s ease;
}
@media screen and (max-width: 768px) {
  .red-card-grid__item {
    --img-w: 36%;
  }
}
.red-card-grid__item::after {
  --s: 20px;
  content: "";
  position: absolute;
  bottom: 10px;
  right: 10px;
  display: block;
  width: var(--s);
  height: var(--s);
  background: url(/corporate/technology/rd/img/top/ico_arrow_w.svg);
  background-size: contain;
  background-repeat: no-repeat;
}
@media screen and (max-width: 768px) {
  .red-card-grid__item::after {
    --s: 13px;
    right: 8px;
  }
}
.red-card-grid__item__img {
  width: var(--img-w);
  overflow: hidden;
}
.red-card-grid__item__img img {
  width: 100%;
  transition: all 0.3s ease;
}
.red-card-grid__item__text {
  display: flex;
  justify-content: center;
  align-items: center;
  width: calc(100% - var(--img-w));
  background-color: #C03;
}
.red-card-grid__item__text p {
  font-size: 1.6rem;
  color: #fff;
}
@media screen and (max-width: 768px) {
  .red-card-grid__item__text p {
    font-size: 1.3rem;
  }
}
.red-card-grid__item:hover .red-card-grid__item__img img, .red-card-grid__item.is-looking .red-card-grid__item__img img {
  transform: scale(1.05);
}
@media screen and (max-width: 768px) {
  .red-card-grid__item:hover .red-card-grid__item__img img, .red-card-grid__item.is-looking .red-card-grid__item__img img {
    transform: scale(1.2);
  }
}

/* ========================================
   Contact Section
======================================== */
.contact-section {
  position: relative;
  background: url(/corporate/technology/rd/img/top/img_contact_bg_pc.png);
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}
@media screen and (max-width: 768px) {
  .contact-section {
    background: url(/corporate/technology/rd/img/top/img_contact_bg_smt.png);
  }
}
.contact-section::after {
  --s: 88px;
  content: "";
  position: absolute;
  bottom: 0;
  right: calc(50% - 701px);
  width: var(--s);
  height: var(--s);
  display: flex;
  justify-content: center;
  align-items: center;
  background-color: #14134f;
  background-image: url(/corporate/technology/rd/img/top/ico_arrow_w.svg);
  background-size: 50%;
  background-position: center;
  background-repeat: no-repeat;
}
@media screen and (max-width: 1270px) {
  .contact-section::after {
    right: 0;
  }
}
@media screen and (max-width: 768px) {
  .contact-section::after {
    --s: 42px;
    right: 0;
  }
}

.contact {
  --ttl-w: 300px;
  display: flex;
  width: 742px;
  margin: 0 auto;
}
@media screen and (max-width: 768px) {
  .contact {
    --ttl-w: 50%;
    width: 100%;
  }
}
.contact__title {
  width: var(--ttl-w);
}
.contact__text {
  position: relative;
  top: -6px;
  right: -50px;
  display: flex;
  justify-content: center;
  align-items: center;
  width: calc(100% - var(--ttl-w));
}
@media screen and (max-width: 768px) {
  .contact__text {
    top: 0;
    left: 10px;
    right: 0;
    width: auto;
  }
}
.contact__text p {
  display: block;
  padding: 10px;
  color: #fff;
  font-size: 2.4rem;
  background-color: #14134F;
}
@media screen and (max-width: 768px) {
  .contact__text p {
    padding: 3px 3px;
    font-size: 1.2rem;
  }
}

/* ========================================
   Animation Styles (AOS Integration)
======================================== */
[data-aos] {
  opacity: 0;
}

[data-aos].aos-animate {
  opacity: 1;
}

[data-aos=fade-up] {
  transform: translateY(30px);
}

[data-aos=fade-up].aos-animate {
  transform: translateY(0);
}

[data-aos=fade-right] {
  transform: translateX(-30px);
}

[data-aos=fade-right].aos-animate {
  transform: translateX(0);
}

[data-aos=fade-left] {
  transform: translateX(30px);
}

[data-aos=fade-left].aos-animate {
  transform: translateX(0);
}

[data-aos=zoom-in] {
  transform: scale(0.9);
}

[data-aos=zoom-in].aos-animate {
  transform: scale(1);
}

/* ========================================
   Loading States & Accessibility
======================================== */
img {
  transition: opacity var(--transition-base);
}

img[loading=lazy] {
  opacity: 0;
}

img[loading=lazy].loaded {
  opacity: 1;
}

/* Focus Styles for Accessibility */
a:focus,
button:focus {
  outline: 2px solid var(--color-docomo-red);
  outline-offset: 2px;
}

/* Reduced Motion Support */
@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}
/* ========================================
   Utility
======================================== */
.bg-black {
  background-color: #000;
}

.bg-red {
  background-color: #C03;
  background-image: url(/corporate/technology/rd/img/top/img_technology_bg_pc.svg);
  background-position: center bottom;
  background-size: contain;
  background-repeat: no-repeat;
}
@media screen and (max-width: 768px) {
  .bg-red {
      background-image: url(/corporate/technology/rd/img/top/img_technology_bg_smt.svg);
      background-position: left bottom -60px;
      background-position-x: -17px;
      background-size: 200vw;
  }
}

.circle-bg-section {
  position: relative;
}

.bg-circle {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  display: flex;
  justify-content: center;
  align-items: end;
  overflow: hidden;
}
.bg-circle img {
  max-width: unset;
  animation-duration: 8s;
  animation-name: float_emotion;
  animation-iteration-count: infinite;
}
@media screen and (max-width: 768px) {
  .bg-circle img {
    position: relative;
    top: -90vw;
    width: 190%;
  }
}

@keyframes float_emotion {
  0% {
    filter: blur(0);
    opacity: 0.8;
    transform: scale(1) translateY(0px) rotate(0deg);
  }
  50% {
    filter: blur(8px);
    opacity: 1;
    transform: scale(0.98) translateY(-10px) rotate(2deg);
  }
  100% {
    filter: blur(0);
    opacity: 0.8;
    transform: scale(1) translateY(0px) rotate(0deg);
  }
}
.bg-navy-blue {
  background: #14134f;
}

.bg-particles {
  position: relative;
  overflow: hidden;
  border-radius: 120px 0 120px 0;
}
@media screen and (max-width: 768px) {
  .bg-particles {
    border-radius: 56px 0 56px 0;
  }
}
.bg-particles .radius-section {
  padding-top: 32px;
  padding-bottom: 274px;
}
@media screen and (max-width: 768px) {
  .bg-particles .radius-section {
    padding-top: 48px;
    padding-bottom: 100px;
  }
}
.bg-particles .particles {
  position: absolute;
  bottom: -230px;
  right: -100px;
  width: 60%;
  height: 500px;
  z-index: 0;
  pointer-events: none;
}
@media screen and (max-width: 768px) {
  .bg-particles .particles {
    bottom: unset;
    right: 0;
    height: unset;
  }
}

.bg-solid-mountain {
  position: relative;
  bottom: 0;
  width: 100%;
  height: 100%;
  background-image: 
    url(/corporate/technology/rd/img/top/img_mountain_bg_pc.svg),
    url(/corporate/technology/rd/img/top/img_plus_bg_pc.svg);
  background-size: 
    144vw,
    25px;
  background-position:
    center bottom -33vw,
    left bottom 135px;
  background-position-x: center, 6%;
  background-repeat: no-repeat;
  background-color: #14134f;
}
@media screen and (max-width: 768px) {
  .bg-solid-mountain {
    background-image: url(/corporate/technology/rd/img/top/img_mountain_bg_smt.svg), url(/corporate/technology/rd/img/top/img_plus_bg_smt.svg);
    background-size: 190vw, 10vw;
    background-position: center bottom -38vw, left bottom 66px;
    background-position-x: 71%, 6%;
  }
}

.bg-c-none {
  background-color: transparent!important;
}

.s-ov-hidden {
  overflow: hidden;
}

/* ========================================
   Figma Blog Section - 957:1580
======================================== */
:root {
  --blog-navy: #14134F;
  --blog-white: #FFFFFF;
  --blog-red: #CC0033;
  --blog-cyan: #86f3ff;
  --blog-tag-bg: rgba(255, 255, 255, 0.2);
}

.blog-container {
  position: relative;
  z-index: 1;
  padding: 90px;
  height: 100%;
  max-width: 1220px;
  margin: 0 auto;
}

.blog-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
}
.blog-header__title {
  display: flex;
  flex-direction: column;
  gap: 17px;
}
@media screen and (max-width: 768px) {
  .blog-header__cta {
    display: none;
  }
}

.blog-grid {
  display: grid;
  grid-template-columns: 581px 581px;
  gap: 58px 58px;
  max-width: 1220px;
}
.blog-grid__item {
  --img-w: 160px;
  position: relative;
  display: flex;
  gap: 21px;
  cursor: pointer;
  transition: all 0.3s ease;
  position: relative;
}
@media screen and (max-width: 768px) {
  .blog-grid__item {
    --img-w: 36%;
    gap: 4.5%;
  }
}
.blog-grid__item::after {
  --s: 18px;
  content: "";
  position: absolute;
  top: calc(50% - (var(--s) / 2));
  right: 0;
  display: block;
  width: var(--s);
  height: var(--s);
  background: url(/corporate/technology/rd/img/top/ico_new_window.svg);
  background-size: contain;
  background-repeat: no-repeat;

}
@media screen and (max-width: 768px) {
  .blog-grid__item::after {
    --s: 12px;
  }
}
.blog-grid__item:hover, .blog-grid__item.is-looking {
  transform: translateY(-4px);
}
@media screen and (max-width: 768px) {
  .blog-grid__item:hover, .blog-grid__item.is-looking {
    transform: translateY(-8px);
  }
}
.blog-grid__item:hover .blog-thumbnail img, .blog-grid__item.is-looking .blog-thumbnail img {
  transform: scale(1.05);
  filter: brightness(1.1);
}
.blog-grid__item:hover .tag, .blog-grid__item.is-looking .tag {
  background: rgba(255, 255, 255, 0.3);
}
.blog-grid__item:hover .blog-grid__item__content__tags__tag, .blog-grid__item.is-looking .blog-grid__item__content__tags__tag {
  background: rgba(255, 255, 255, 0.3);
}
.blog-grid__item:focus-visible {
  outline: 2px solid var(--blog-cyan);
  outline-offset: 2px;
  border-radius: 8px;
}
.blog-grid__item__thumbnail {
  position: relative;
  width: var(--img-w);
  flex-shrink: 0;
  overflow: hidden;
}
.blog-grid__item__thumbnail img {
  width: 100%;
  aspect-ratio: 160/120;
  -o-object-fit: cover;
     object-fit: cover;
  background-color: #fff;
  transition: all 0.3s ease;
}
@media screen and (max-width: 768px) {
  .blog-grid__item__thumbnail img {
    aspect-ratio: 120/67;
  }
}
.blog-grid__item__thumbnail .new-badge {
  --gap: 8px;
  position: absolute;
  top: 0;
  left: 0;
  background: var(--blog-red);
  color: var(--blog-white);
  font-family: "Montserrat", "Inter", sans-serif;
  font-weight: 600;
  font-size: 1.2rem;
  padding: 2px 22px 2px 9px;
  clip-path: polygon(0 0, 100% 0, calc(100% - var(--gap)) 100%, 0 100%);
  border-radius: 0 0 4px 0;
  z-index: 1;
}
@media screen and (max-width: 768px) {
  .blog-grid__item__thumbnail .new-badge {
    padding: 1px 15px 1px 9px;
  }
}
.blog-grid__item__content {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 18px;
  width: calc(100% - var(--img-w));
  padding-right: 30px;
}
@media screen and (max-width: 768px) {
  .blog-grid__item__content {
    gap: 8px;
    width: calc(100% - var(--img-w));
  }
}
.blog-grid__item__content__date {
  font-family: "Inter", sans-serif;
  font-weight: 400;
  font-size: 16px;
  line-height: 1;
  color: var(--blog-white);
}
@media screen and (max-width: 768px) {
  .blog-grid__item__content__date {
    font-size: 1.2rem;
  }
}
.blog-grid__item__content__title {
  font-family: "Inter", "Noto Sans JP", sans-serif;
  font-weight: 400;
  font-size: 20px;
  line-height: 1.5;
  color: var(--blog-white);
  margin: 0;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
@media screen and (max-width: 768px) {
  .blog-grid__item__content__title {
    font-size: 1.3rem;
  }
}
.blog-grid__item__content__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
@media screen and (max-width: 768px) {
  .blog-grid__item__content__tags {
    gap: 5px 7px;
  }
}
.blog-grid__item__content__tags__tag {
  background: var(--blog-tag-bg);
  color: var(--blog-white);
  font-family: "Inter", "Noto Sans JP", sans-serif;
  font-weight: 400;
  font-size: 16px;
  line-height: 1;
  padding: 8px 10px;
  white-space: nowrap;
  transition: background 0.3s ease;
}
@media screen and (max-width: 768px) {
  .blog-grid__item__content__tags__tag {
    font-size: 1.2rem;
    padding: 5px 5px;
  }
}

@media (max-width: 1199px) {
  .blog-container {
    padding: 60px 40px;
  }
  .blog-grid {
    grid-template-columns: 1fr;
    gap: 40px;
    max-width: none;
  }
  .blog-cta {
    padding: 16px 80px;
    font-size: 14px;
  }
}
@media (max-width: 767px) {
  .blog-container {
    padding: 40px 20px;
  }
  .blog-header {
    flex-direction: column;
    gap: 30px;
    align-items: flex-start;
  }
  .blog-card {
    flex-direction: column;
    gap: 16px;
  }
  .blog-thumbnail {
    width: 100%;
    height: 200px;
  }
  .blog-content {
    max-width: none;
  }
  .blog-cta {
    width: 100%;
    max-width: 280px;
    padding: 16px 40px;
    justify-content: center;
  }
}
@media (max-width: 480px) {
  .blog-container {
    padding: 30px 16px;
  }
  .blog-article-title {
    font-size: 18px;
  }
  .tag {
    font-size: 14px;
    padding: 6px 8px;
  }
}
/* ========================================
   Minimal Filter System Styles
======================================== */
.js-filter-tag {
  cursor: pointer;
  transition: all 0.3s ease;
}
.js-filter-tag.active {
  background-color: #d52b1e !important;
  color: #fff !important;
}
.js-filter-tag:focus {
  outline: 2px solid #d52b1e;
  outline-offset: 2px;
}

/* ========================================
   Separate Line Styles
======================================== */
.rd-separate-line {
  position: absolute;
  top: 0;
  width: 100%;
  height: 20px;
  overflow: hidden;
}
@media screen and (max-width: 768px) {
  .rd-separate-line {
    height: 10px;
  }
}
.rd-separate-line::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  display: block;
  width: 380%;
  height: 100%;
  background: linear-gradient(90deg, #86F3FF 0%, #FFF 12.5%, #FF94B5 25%, #FFF 37.5%, #86F3FF 50%, #FFF 62.5%, #FF94B5 75%, #FFF 87.5%, #86F3FF 100%);
  animation-name: loop;
  animation-duration: 4s;
  animation-iteration-count: infinite;
  animation-timing-function: linear;
}