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

html {
  scroll-behavior: smooth;
}

body {
  font-family: "Noto Sans JP", -apple-system, BlinkMacSystemFont, "Hiragino Kaku Gothic ProN", "Yu Gothic", sans-serif;
  color: #f6f8ff;
  background: #070f24;
  line-height: 1.75;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  letter-spacing: 0;
}

ul {
  list-style: none;
}

a {
  text-decoration: none;
  color: inherit;
}

img {
  max-width: 100%;
  display: block;
}

.container {
  width: 100%;
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 24px;
}

.sp-only {
  display: none;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 13px 24px;
  border-radius: 999px;
  font-weight: 900;
  font-size: 0.95rem;
  letter-spacing: 0;
  transition: all 0.25s ease;
  border: 1px solid transparent;
  white-space: nowrap;
}

.btn--primary {
  background: #fff;
  border-color: #fff;
  color: #05070a;
  box-shadow: 0 16px 38px rgba(47, 124, 255, 0.28);
}
.btn--primary:hover {
  background: #2f7cff;
  border-color: #2f7cff;
  color: #fff;
  transform: translateY(-2px);
}

.btn--outline-light {
  border-color: rgba(255, 255, 255, 0.28);
  color: #fff;
  background: rgba(255, 255, 255, 0.04);
}
.btn--outline-light:hover {
  background: rgba(255, 255, 255, 0.14);
  border-color: rgba(255, 255, 255, 0.7);
  transform: translateY(-2px);
}

.btn--lg {
  padding: 16px 40px;
  font-size: 1.05rem;
}

.section {
  padding: 128px 0;
}

.section__label {
  font-size: 0.78rem;
  font-weight: 900;
  letter-spacing: 0.14em;
  color: #2f7cff;
  text-align: center;
  margin-bottom: 16px;
}
.section__label--light {
  color: #9fc1ff;
}

.section__title {
  font-size: 1.75rem;
  font-weight: 700;
  line-height: 1.3;
  letter-spacing: -0.01em;
  text-align: center;
  margin-bottom: clamp(20px, 3vw, 32px);
  color: #16284f;
}
@media (min-width: 769px) {
  .section__title {
    font-size: 2rem;
  }
}
@media (min-width: 1281px) {
  .section__title {
    font-size: 2.5rem;
  }
}

.section__sub {
  font-size: 17px;
  line-height: 1.8;
  letter-spacing: -0.02em;
  color: #5e6676;
  font-weight: 500;
  text-align: center;
  margin-bottom: clamp(40px, 6vw, 64px);
}

.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 100;
  padding: 14px 0;
  background: transparent;
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 58px;
  padding: 0 18px;
  background: rgba(3, 4, 7, 0.76);
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 999px;
  backdrop-filter: blur(18px);
}

.header__logo {
  display: flex;
  align-items: center;
  gap: 8px;
  color: #fff;
  font-weight: 900;
  font-size: 1.05rem;
  letter-spacing: 0;
}

.header__logo-image {
  height: 32px;
  width: auto;
}

.header__nav {
  display: flex;
  align-items: center;
  gap: 28px;
}
.header__nav a {
  color: rgba(255, 255, 255, 0.85);
  font-size: 0.88rem;
  font-weight: 500;
}
.header__nav a:hover {
  color: #fff;
}

.header__cta {
  background: #fff;
  color: #05070a !important;
  padding: 9px 18px;
  border-radius: 999px;
  font-weight: 700;
}

.hero {
  position: relative;
  min-height: 94vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  color: #fff;
  background: linear-gradient(135deg, #070f24, #2f7cff);
}

.hero__bg {
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(7, 15, 36, 0.96) 0%, rgba(7, 15, 36, 0.74) 36%, rgba(7, 15, 36, 0.18) 70%), linear-gradient(180deg, rgba(7, 15, 36, 0.18) 0%, rgba(7, 15, 36, 0.05) 54%, rgba(7, 15, 36, 0.66) 100%), linear-gradient(rgba(255, 255, 255, 0.045) 1px, transparent 1px), linear-gradient(90deg, rgba(255, 255, 255, 0.045) 1px, transparent 1px), radial-gradient(circle at 78% 22%, rgba(47, 124, 255, 0.45), transparent 28%), radial-gradient(circle at 18% 76%, rgba(47, 124, 255, 0.16), transparent 28%), linear-gradient(135deg, #070f24, #2f7cff);
  background-size: auto, auto, 72px 72px, 72px 72px, auto, auto, auto;
  background-position: center, center, center, center, center, center, center;
  background-repeat: no-repeat, no-repeat, repeat, repeat, no-repeat, no-repeat, no-repeat;
  z-index: 0;
}
.hero__bg::before {
  content: "";
  position: absolute;
  inset: -10% -6%;
  background: url("../assets/images/hero-flat-b.png") 66% 50%/min(1280px, 78vw) auto no-repeat;
  opacity: 0.28;
  mix-blend-mode: screen;
  -webkit-mask-image: radial-gradient(ellipse at 66% 50%, #000 0%, rgba(0, 0, 0, 0.82) 34%, rgba(0, 0, 0, 0.36) 58%, transparent 78%);
  mask-image: radial-gradient(ellipse at 66% 50%, #000 0%, rgba(0, 0, 0, 0.82) 34%, rgba(0, 0, 0, 0.36) 58%, transparent 78%);
  pointer-events: none;
}

.hero__inner {
  position: relative;
  z-index: 1;
  padding-top: 148px;
  padding-bottom: 112px;
  width: 100%;
}

.hero__label {
  font-size: 0.8rem;
  letter-spacing: 0.18em;
  font-weight: 700;
  color: #9fc1ff;
  margin-bottom: 24px;
}

.hero__title {
  font-weight: 900;
  line-height: 1.24;
  margin-bottom: 26px;
  max-width: 760px;
  word-break: keep-all;
  overflow-wrap: normal;
}

.hero__title-line {
  display: block;
  white-space: nowrap;
  word-break: keep-all;
  overflow-wrap: normal;
  font-size: clamp(1.25rem, 6vw, 1.625rem);
}
@media (min-width: 901px) {
  .hero__title-line {
    font-size: clamp(2rem, 3.6vw, 3.125rem);
  }
}

.hero__sub {
  font-size: clamp(0.95rem, 1.6vw, 1.1rem);
  color: rgba(255, 255, 255, 0.78);
  font-weight: 700;
  max-width: 660px;
}

.hero__scroll {
  position: absolute;
  bottom: 28px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  font-size: 0.7rem;
  letter-spacing: 0.15em;
  color: rgba(255, 255, 255, 0.6);
}
.hero__scroll span {
  width: 1px;
  height: 36px;
  background: rgba(255, 255, 255, 0.5);
  position: relative;
  overflow: hidden;
}
.hero__scroll span::after {
  content: "";
  position: absolute;
  top: -100%;
  left: 0;
  width: 100%;
  height: 100%;
  background: #2f7cff;
  animation: scrollLine 1.8s infinite;
}

@keyframes scrollLine {
  0% {
    top: -100%;
  }
  100% {
    top: 100%;
  }
}
.section--issue {
  background: #f4f6fb;
}

.issue__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
  margin-bottom: 64px;
}

.issue__card {
  background: #ffffff;
  border-radius: 8px;
  padding: 34px 24px;
  text-align: center;
}

.issue__text {
  font-size: 0.95rem;
  font-weight: 500;
  color: #12141a;
}

.issue__lead {
  font-size: 1.05rem;
  font-weight: 700;
  color: #16284f;
  text-align: center;
  line-height: 2;
}

.section--about {
  position: relative;
  overflow: hidden;
  background: linear-gradient(135deg, #070f24, #2f7cff);
  color: #fff;
  border-top: 1px solid rgba(255, 255, 255, 0.16);
}
.section--about::before {
  content: "";
  position: absolute;
  inset: 0;
  background: url("../assets/images/about-bg-visual.png") center/cover no-repeat;
  opacity: 0.34;
  mix-blend-mode: screen;
  pointer-events: none;
}
.section--about::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at center, rgba(7, 15, 36, 0.18) 0%, rgba(7, 15, 36, 0.44) 54%, rgba(7, 15, 36, 0.14) 100%), linear-gradient(90deg, rgba(7, 15, 36, 0.32), transparent 42%, rgba(47, 124, 255, 0.08));
  pointer-events: none;
}
.section--about .container {
  position: relative;
  z-index: 2;
}
.section--about .section__title {
  color: #fff;
}
.section--about .section__sub {
  color: rgba(255, 255, 255, 0.68);
}

.about__text {
  max-width: 880px;
  margin: 0 auto;
  text-align: center;
}
.about__text p {
  margin-bottom: 18px;
  color: rgba(255, 255, 255, 0.78);
  line-height: 2;
}

.section--vision {
  background: #f4f6fb;
  color: #fff;
}
.section--vision .section__title {
  color: #16284f;
}
.section--vision .section__sub {
  color: #5e6676;
}

.vision__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.vision__card {
  background: #fff;
  border-radius: 8px;
  min-height: 158px;
  padding: 30px 34px;
  text-align: left;
  display: flex;
  align-items: center;
  gap: 24px;
}
.vision__card p {
  font-weight: 700;
  font-size: 0.95rem;
  color: #12141a;
}

.vision__image {
  flex: 0 0 112px;
  width: 112px;
  aspect-ratio: 16/9;
  object-fit: cover;
  border-radius: 7px;
  background: #e7f0ff;
}

.section--activities {
  background: #f4f6fb;
}

.activities__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 18px;
}

.activities__card {
  background: #fff;
  border-radius: 8px;
  padding: 38px 36px;
}
.activities__card ul li {
  position: relative;
  padding-left: 20px;
  margin-bottom: 13px;
  font-size: 0.92rem;
  color: #12141a;
}
.activities__card ul li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 5px;
  height: 5px;
  background: #2f7cff;
}

.activities__card-title {
  font-size: 1.1rem;
  font-weight: 900;
  color: #16284f;
  margin-bottom: 24px;
  display: flex;
  align-items: center;
  gap: 14px;
}

.activities__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex: 0 0 32px;
  width: 32px;
  height: 32px;
}
.activities__icon svg {
  width: 100%;
  height: 100%;
  display: block;
}

.activities__icon-main {
  fill: #2f7cff;
}

.activities__icon-soft {
  fill: #e7f0ff;
}

.activities__icon-light {
  stroke: #9fc1ff;
  stroke-width: 2.4;
}

.badge {
  display: inline-block;
  margin-left: 8px;
  padding: 2px 10px;
  font-size: 0.7rem;
  font-weight: 700;
  border-radius: 999px;
  background: #e7f0ff;
  color: #1450b8;
  vertical-align: middle;
}

.section--lead {
  background: linear-gradient(135deg, #070f24, #2f7cff);
  color: #fff;
  border-top: 1px solid rgba(255, 255, 255, 0.16);
}
.section--lead .section__title {
  color: #fff;
}
.section--lead .section__sub {
  color: rgba(255, 255, 255, 0.68);
}

.lead__list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px 32px;
  max-width: 760px;
  margin: 0 auto 44px;
}
.lead__list li {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 700;
  font-size: 0.98rem;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 8px;
  padding: 16px 18px;
  color: rgba(255, 255, 255, 0.9);
}

.lead__check {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: #fff;
  color: #16284f;
  font-size: 0.8rem;
  flex-shrink: 0;
}

.lead__note {
  text-align: center;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.68);
  margin-bottom: 40px;
}

.lead__cta {
  text-align: center;
}

.section--members {
  background: #f4f6fb;
}

.members__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.member-card {
  background: #fff;
  border-radius: 8px;
  overflow: hidden;
  text-align: center;
}

.member-card__photo {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-weight: 900;
  font-size: 1.3rem;
  margin: 24px auto 0;
}
.member-card__photo--1 {
  background: linear-gradient(135deg, #16284f, #2f7cff);
}
.member-card__photo--2 {
  background: linear-gradient(135deg, #05070a, #253247);
}
.member-card__photo--3 {
  background: linear-gradient(135deg, #1450b8, #9fc1ff);
}

.member-card__body {
  padding: 18px 24px 30px;
}

.member-card__tags {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-bottom: 14px;
}

.tag {
  font-size: 0.72rem;
  font-weight: 700;
  color: #1450b8;
  background: #e7f0ff;
  padding: 4px 10px;
  border-radius: 999px;
}

.member-card__name {
  font-size: 1.15rem;
  font-weight: 900;
  margin-bottom: 12px;
  color: #16284f;
}

.member-card__text {
  font-size: 0.88rem;
  color: #5e6676;
  text-align: left;
}

.section--roadmap {
  background: #f4f6fb;
}

.roadmap__list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  max-width: 760px;
  margin: 0 auto 36px;
}
.roadmap__list li {
  display: flex;
  align-items: center;
  gap: 14px;
  font-weight: 700;
  font-size: 0.95rem;
  background: #fff;
  border-radius: 8px;
  padding: 14px 16px;
  color: #12141a;
}

.roadmap__badge {
  flex-shrink: 0;
  font-size: 0.7rem;
  font-weight: 700;
  padding: 4px 12px;
  border-radius: 999px;
  background: #e7f0ff;
  color: #1450b8;
}

.roadmap__note {
  text-align: center;
  color: #5e6676;
  font-weight: 500;
}

.section--contact {
  position: relative;
  color: #fff;
  text-align: center;
  overflow: hidden;
  border-top: 1px solid rgba(255, 255, 255, 0.16);
}

.contact__bg {
  position: absolute;
  inset: 0;
  background: linear-gradient(rgba(255, 255, 255, 0.05) 1px, transparent 1px), linear-gradient(90deg, rgba(255, 255, 255, 0.05) 1px, transparent 1px), radial-gradient(circle at 70% 20%, rgba(47, 124, 255, 0.36), transparent 34%), linear-gradient(135deg, #070f24, #2f7cff);
  background-size: 72px 72px, 72px 72px, auto, auto;
}

.contact__inner {
  position: relative;
  z-index: 1;
}

.contact__title {
  font-size: clamp(1.6rem, 3.4vw, 2.4rem);
  font-weight: 900;
  margin-bottom: 16px;
}

.contact__sub {
  font-size: 1.1rem;
  font-weight: 700;
  color: #9fc1ff;
  margin-bottom: 28px;
}

.contact__text {
  color: rgba(255, 255, 255, 0.8);
  margin-bottom: 44px;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.contact__form {
  max-width: 560px;
  margin: 0 auto;
  text-align: left;
}

.contact__form-row {
  margin-bottom: 22px;
}

.contact__form-label {
  display: block;
  font-size: 0.85rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: rgba(255, 255, 255, 0.85);
}

.contact__form-required {
  display: inline-block;
  margin-left: 4px;
  padding: 1px 8px;
  border-radius: 999px;
  font-size: 0.65rem;
  font-weight: 700;
  background: #2f7cff;
  color: #fff;
  vertical-align: middle;
}

.contact__form-input {
  width: 100%;
  padding: 13px 16px;
  border-radius: 8px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  background: rgba(255, 255, 255, 0.06);
  color: #fff;
  font-family: "Noto Sans JP", -apple-system, BlinkMacSystemFont, "Hiragino Kaku Gothic ProN", "Yu Gothic", sans-serif;
  font-size: 0.95rem;
  transition: border-color 0.2s ease, background 0.2s ease;
}
.contact__form-input::placeholder {
  color: rgba(255, 255, 255, 0.4);
}
.contact__form-input:focus {
  outline: none;
  border-color: #2f7cff;
  background: rgba(255, 255, 255, 0.1);
}

select.contact__form-input {
  appearance: none;
  background-image: linear-gradient(45deg, transparent 50%, rgba(255, 255, 255, 0.6) 50%), linear-gradient(135deg, rgba(255, 255, 255, 0.6) 50%, transparent 50%);
  background-position: calc(100% - 20px) center, calc(100% - 15px) center;
  background-size: 5px 5px, 5px 5px;
  background-repeat: no-repeat;
}
select.contact__form-input option {
  color: #12141a;
}

textarea.contact__form-input {
  resize: vertical;
}

.contact__form-submit {
  display: flex;
  width: 100%;
  margin-top: 8px;
}

.footer {
  background: #070f24;
  color: rgba(255, 255, 255, 0.6);
  padding: 36px 0;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.footer__inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.8rem;
}

.footer__logo {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 700;
  color: #fff;
}

.footer__logo-image {
  height: 24px;
  width: auto;
}

@media (max-width: 900px) {
  .sp-only {
    display: inline;
  }
  .header__nav {
    gap: 16px;
  }
  .header__nav a:not(.header__cta) {
    display: none;
  }
  .section {
    padding: 80px 0;
  }
  .hero__inner {
    padding-top: 132px;
    padding-bottom: 96px;
  }
  .hero__title {
    line-height: 1.26;
    max-width: 100%;
  }
  .hero__sub {
    max-width: 560px;
  }
  .hero__bg {
    background-position: center, center, 58% center, center, center, center, center, center;
  }
  .issue__grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .vision__grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .activities__grid {
    grid-template-columns: 1fr;
  }
  .lead__list {
    grid-template-columns: 1fr;
  }
  .members__grid {
    grid-template-columns: 1fr;
  }
  .roadmap__list {
    grid-template-columns: 1fr;
  }
  .footer__inner {
    flex-direction: column;
    gap: 8px;
    text-align: center;
  }
}
@media (max-width: 600px) {
  .issue__grid {
    grid-template-columns: 1fr;
  }
  .vision__grid {
    grid-template-columns: 1fr;
  }
  .section__title {
    font-size: 1.5rem;
  }
  .hero {
    min-height: 86vh;
  }
  .hero__inner {
    padding-top: 118px;
    padding-bottom: 88px;
  }
  .hero__label {
    font-size: 0.68rem;
    margin-bottom: 18px;
  }
  .hero__title {
    line-height: 1.28;
    margin-bottom: 22px;
    max-width: 100%;
  }
  .hero__sub {
    font-size: 0.92rem;
    line-height: 1.8;
  }
  .hero__bg {
    background: linear-gradient(180deg, rgba(7, 15, 36, 0.9) 0%, rgba(7, 15, 36, 0.76) 46%, rgba(7, 15, 36, 0.4) 100%), linear-gradient(rgba(255, 255, 255, 0.045) 1px, transparent 1px), linear-gradient(90deg, rgba(255, 255, 255, 0.045) 1px, transparent 1px), linear-gradient(135deg, #070f24, #2f7cff);
    background-size: auto, 58px 58px, 58px 58px, auto;
    background-position: center, center, center, center;
    background-repeat: no-repeat, repeat, repeat, no-repeat;
  }
  .hero__bg::before {
    inset: 6% -42% 8% -18%;
    background-position: 58% 54%;
    background-size: 150vw auto;
    opacity: 0.24;
  }
}