@charset "utf-8";

/* Reset
----------------------------------------------------------------- */
*, ::before, ::after {
  box-sizing: border-box;
  border-style: solid;
  border-width: 0;
}
html {
  line-height: 1.15;
  -webkit-text-size-adjust: 100%;
  -webkit-tap-highlight-color: transparent;
}
body {
  margin: 0;
}
main {
  display: block;
}
p, table, blockquote, address, pre, iframe, form, figure, dl {
  margin: 0;
}
h1, h2, h3, h4, h5, h6 {
  font-size: inherit;
  font-weight: inherit;
  margin: 0;
}
ul, ol {
  margin: 0;
  padding: 0;
  list-style: none;
}
dt {
  font-weight: bold;
}
dd {
  margin-left: 0;
}
hr {
  box-sizing: content-box;
  height: 0;
  overflow: visible;
  border-top-width: 1px;
  margin: 0;
  clear: both;
  color: inherit;
}
pre {
  font-family: monospace, monospace;
  font-size: inherit;
}
address {
  font-style: inherit;
}
a {
  background-color: transparent;
  text-decoration: none;
  color: inherit;
}
abbr[title] {
  text-decoration: underline dotted;
}
b, strong {
  font-weight: bolder;
}
code, kbd, samp {
  font-family: monospace, monospace;
  font-size: inherit;
}
small {
  font-size: 80%;
}
sub, sup {
  font-size: 75%;
  line-height: 0;
  position: relative;
  vertical-align: baseline;
}
sub {
  bottom: -0.25em;
}
sup {
  top: -0.5em;
}
svg, img, embed, object, iframe {
  vertical-align: bottom;
}
button, input, optgroup, select, textarea {
  -webkit-appearance: none;
  appearance: none;
  vertical-align: middle;
  color: inherit;
  font: inherit;
  background: transparent;
  padding: 0;
  margin: 0;
  border-radius: 0;
  text-align: inherit;
  text-transform: inherit;
}
[type="checkbox"] {
  -webkit-appearance: checkbox;
  appearance: checkbox;
}
[type="radio"] {
  -webkit-appearance: radio;
  appearance: radio;
}
button, [type="button"], [type="reset"], [type="submit"] {
  cursor: pointer;
}
button:disabled, [type="button"]:disabled, [type="reset"]:disabled, [type="submit"]:disabled {
  cursor: default;
}
:-moz-focusring {
  outline: auto;
}
select:disabled {
  opacity: inherit;
}
option {
  padding: 0;
}
fieldset {
  margin: 0;
  padding: 0;
  min-width: 0;
}
legend {
  padding: 0;
}
progress {
  vertical-align: baseline;
}
textarea {
  overflow: auto;
}
[type="search"] {
  outline-offset: -2px;
}
[type="search"]::-webkit-search-decoration {
  -webkit-appearance: none;
}
::-webkit-file-upload-button {
  -webkit-appearance: button;
  font: inherit;
}
label[for] {
  cursor: pointer;
}
details {
  display: block;
}
summary {
  display: list-item;
}
[contenteditable]:focus {
  outline: auto;
}
table {
  border-color: inherit;
  border-collapse: collapse;
}
caption {
  text-align: left;
}
td, th {
  vertical-align: top;
  padding: 0;
}
th {
  text-align: left;
  font-weight: bold;
}


/* Base
----------------------------------------------------------------- */
html {
  height: 100%;
  line-height: 1.75;
  scroll-behavior: smooth;
}
body {
  position: relative;
  min-height: 100%;
  -webkit-text-size-adjust: 100%;
  color: #202945;
  font-weight: 500;
  font-family: "Noto Sans JP", sans-serif;
}
img {
  max-width: 100%;
  height: auto;
}
a {
  color: #202945;
  text-decoration: none;
  transition: all 0.2s ease;
}
@media (min-width: 960px) {
  a:hover {
    color: #202945;
  }
  a img {
    transition: opacity 0.3s ease;
  }
  a:hover img {
    opacity: 0.8;
  }
  a[href^='tel'] {
    pointer-events: none;
    cursor: text;
  }
}

/*--------------------------------------------------
  ヘッダー
--------------------------------------------------*/
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 100;
  padding: 18px 2.66666vw;
}
.header__inner {
  display: flex;
  align-items: center;
  position: relative;
  height: 70px;
  padding-left: 5.33333vw;
  border-radius: 8px;
  background: linear-gradient(to right, #01307D, #01307D 50%, #042966 100%);
  color: #FFF;
  transition: all 0.3s ease;
}
.header__inner:has(.is-open) {
  background: transparent;
}
.header__emblem {
  display: none;
}
.header__title {
  width: min(256px, calc(100% - 61px));
  line-height: 1;
}
.header__title img {
  transition: all 0.3s ease;
}
.header__inner:has(.is-open) .header__title img {
  opacity: 0;
}
.header__menu {
  display: flex;
  align-items: center;
  justify-content: center;
  position: absolute;
  top: calc(50% - 20.5px);
  right: 1.25vw;
  z-index: 101;
  width: 41px;
  height: 41px;
  background: none;
  border: none;
}
.header__menu span {
  display: block;
  width: 21px;
  height: 2px;
  border-radius: 2px;
  background: #FFF;
  transition: opacity 0.3s ease;
}
.header__menu::before,
.header__menu::after {
  position: absolute;
  left: 10px;
  width: 21px;
  height: 2px;
  border-radius: 2px;
  background: #FFF;
  transition: transform 0.3s ease;
  content: '';
}
.header__menu::before {
  top: 12px;
}
.header__menu::after {
  bottom: 13px;
}
.header__inner:has(.is-open) .header__menu span {
  opacity: 0;
}
.header__inner:has(.is-open) .header__menu::before {
  transform: translateY(7px) rotate(45deg);
}
.header__inner:has(.is-open) .header__menu::after {
  transform: translateY(-7px) rotate(-45deg);
}
@media (min-width: 960px) {
  .header {
    padding: 24px;
  }
  .header__inner {
    height: 84px;
    padding-right: 24px;
    padding-left: 24px;
  }
  .header__logo {
    display: flex;
    align-items: center;
    gap: 26px;
  }
  .header__emblem {
    display: block;
    width: 112px;
  }
  .header__title {
    max-width: 363px;
  }
  .header__menu {
    display: none;
  }
}

/*--------------------------------------------------
  ドロワーメニュー
--------------------------------------------------*/
.header__nav {
  display: flex;
  flex-direction: column;
  opacity: 0;
  position: absolute;
  top: 0;
  right: 0;
  width: 224px;
  padding: 70px 42px;
  border-radius: 8px;
  pointer-events: none;
  transition: all 0.3s ease;
}
.header__nav.is-open {
  opacity: 1;
  z-index: 99;
  background: linear-gradient(#01307D, #042966);
  pointer-events: auto;
}
.header__nav-sub {
  display: none;
  margin-top: 50px;
  font-weight: 400;
  font-size: 0.875rem;
}
.header__nav-link--login {
  border: 1px solid rgba(255,255,255,0.5);
  border-radius: 4px;
  text-align: center;
}
.header__nav-item:has(.header__nav-link--login) {
  display: none;
}
.header__nav-item + .header__nav-item {
  margin-top: 30px;
}
.header__nav-item:has(.header__nav-link--login) + .header__nav-item {
  margin-top: 0;
}
.header__nav-link--login + .header__nav-item {
  margin-top: 40px;
}
.header__nav-link {
  display: block;
  padding: 1px 0;
  color: #FFF;
}
@media (min-width: 960px) {
  .header__nav {
    opacity: 1;
    position: static;
    flex-direction: row;
    align-items: center;
    justify-content: flex-end;
    width: auto;
    margin-left: auto;
    padding: 0;
    border-radius: 0;
    pointer-events: auto;
  }
  .header__nav-main {
    display: flex;
    align-items: center;
    gap: 24px;
  }
  .header__nav-item {
    margin-top: 0;
  }
  .header__nav-item + .header__nav-item {
    margin-top: 0;
  }
  .header__nav-link:hover {
    color: #FFF;
  }
}

/*--------------------------------------------------
  メインビジュアル
--------------------------------------------------*/
.hero {
  position: relative;
  width: 100%;
  height: min(110.93333vw, 572px);
}
.hero__image {
  height: 100%;
}
.hero__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.hero__text {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: min(48.55769%, 240px);
  padding-top: 2px;
  background: linear-gradient(rgba(1,24,63,0), rgba(1,48,125,0.6));
  text-align: center;
}
.hero__logo {
  width: min(54.93333vw, 248px);
}
@media (min-width: 1024px) {
  .hero {
    height: 100vh;
  }
  .hero__text {
    height: 288px;
  }
  .hero__logo {
    max-width: 342px;
    margin-top: -20px;
  }
}

/*--------------------------------------------------
  同窓会について（about）
--------------------------------------------------*/
.about {
  overflow: hidden;
  position: relative;
  background: #042966;
  color: #FFF;
}
.about::before {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 776px;
  background: url(../img/bg-about.svg) no-repeat center top / cover;
  content: '';
}
.about__inner {
  position: relative;
  z-index: 1;
  max-width: 1084px;
  margin: 0 auto;
  padding: 50px 10.66666vw 80px;
}
.about__title {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  margin-bottom: 40px;
}
.about__title-en {
  opacity: 0.5;
  font-weight: 400;
  font-size: 3rem;
  line-height: 1.2;
  margin-bottom: 8px;
}
.about__title-ja {
  font-size: 1.125rem;
  line-height: 2;
}
.about__content {
  max-width: 562px;
  margin: 0 auto;
  font-size: 0.875rem;
  line-height: 2.28571;
}
.about__content p {
  margin-bottom: 1.5em;
}
.about__content p:last-child {
  margin-bottom: 0;
}
@media (min-width: 420px) {
  .about__title-ja br {
    display: none;
  }
}
@media (min-width: 960px) {
  .about__content {
    max-width: inherit;
    font-size: 1rem;
  }
}
@media (min-width: 1024px) {
  .about {
    padding: 80px 40px 100px;
  }
  .about::before {
    height: 100%;
  }
  .about__inner {
    display: flex;
    justify-content: space-between;
    padding: 0;
  }
  .about__content {
    width: 54.88281%;
  }
}
@media (min-width: 1200px) {
  .about__title-en {
    font-size: 4rem;
  }
  .about__title-ja {
    font-size: 1.25rem;
  }
  .about__content {
    font-size: 1.125rem;
  }
}

/*--------------------------------------------------
  寄付セクション（donation）
--------------------------------------------------*/
.donation {
  position: relative;
  margin-top: -88px;
  padding: 128px 5.33333vw 50px;
}
.donation::before {
  position: absolute;
  top: 98px;
  left: 0;
  z-index: -1;
  width: 100%;
  height: 100%;
  background: url(../img/bg-donation.svg) no-repeat center top / 128vw auto;
  content: '';
}
.donation__inner {
  max-width: 1084px;
  margin: 0 auto;
}
.donation__title {
  margin-bottom: 24px;
  font-size: 1.25rem;
  line-height: 1.9;
  text-align: center;
  color: #01307D;
}
.donation__content {
  position: relative;
  padding: 35px 8vw;
  border-radius: 8px;
  background: #F0F4F8;
}
.donation__text {
  margin-bottom: 30px;
  font-size: 0.875rem;
  line-height: 2.28571;
  color: #202945;
}
.donation__text p {
  margin-bottom: 1.5em;
}
.donation__text p:last-child {
  margin-bottom: 0;
}
.donation__button {
  display: flex;
  flex-direction: column;
  gap: 10px;
  max-width: 320px;
  margin: 0 auto;
}
.donation__btn {
  display: inline-block;
  padding: 12px;
  border-radius: 8px;
  background: #005AB4;
  color: #FFF;
  line-height: 1.6;
  text-align: center;
  transition: all 0.3s ease;
}
@media (min-width: 420px) {
  .donation__btn br {
    display: none;
  }
}
@media (min-width: 640px) {
  .donation__title br {
    display: none;
  }
}
@media (min-width: 768px) {
  .donation {
    margin-top: -106px;
    padding-top: 156px;
  }
  .donation::before {
    top: 106px;
    background-size: 89.33333vw auto;
  }
  .donation__title {
    margin-bottom: 40px;
  }
}
@media (min-width: 960px) {
  .donation {
    margin-top: -108px;
    padding: 188px 40px 80px;
  }
  .donation::before {
    background-size: 1084px auto;
  }
  .donation__content {
    padding: 60px 40px;
  }
  .donation__title {
    font-size: 1.5rem;
  }
  .donation__text {
    font-size: 1rem;
  }
  .donation__button {
    max-width: 428px;
  }
  .donation__btn {
    font-size: 1.25rem;
  }
  .donation__btn:hover {
    color: #FFF;
  }
}

/*--------------------------------------------------
  アクセスセクション（access）
--------------------------------------------------*/
.access {
  position: relative;
  z-index: 1;
  padding: 60px 0 80px;
  background: #FFF;
}
.donation + .access {
  padding-top: 0;
}
.access__inner {
  position: relative;
  max-width: 1084px;
  margin: 0 auto;
}
.access__header {
  display: flex;
  flex-direction: column-reverse;
  align-items: center;
  margin-bottom: 40px;
}
.access__title {
  color: #202945;
  font-size: 0.875rem;
  line-height: 2.57143;
}
.access__subtitle {
  font-size: 3rem;
  font-weight: 400;
  line-height: 1.2;
  color: #005AB4;
}
.access__content {
  display: flex;
  flex-direction: column;
  align-items: center;
}
.access__map {
  position: relative;
  width: 100%;
  max-width: 1084px;
  height: 97.06666vw;
  max-height: 400px;
  margin: 0 auto;
  overflow: hidden;
}
.access__map iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}
.access__map-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  position: relative;
  width: 84%;
  max-width: 320px;
  height: 64px;
  margin: 40px auto 0;
  padding: 12px 24px;
  border-radius: 8px;
  background: #005AB4;
  color: #FFF;
  font-size: 1.125rem;
  transition: all 0.3s ease;
}
.access__map-link::before {
  position: absolute;
  top: calc(50% - 12px);
  left: 18px;
  width: 16.5px;
  height: 24px;
  background: url(../img/icon-map.svg) no-repeat center / cover;
  content: '';
}
.access__map-link:hover {
  color: #FFF;
}
.access__map-icon {
  width: 16px;
  height: 16px;
}
@media (min-width: 960px) {
  .access {
    padding: 80px 40px;
  }
  .access__header {
    align-items: flex-start;
  }
  .access__subtitle {
    font-size: 4rem;
  }
  .access__map {
    height: 365px;
  }
  .access__map-link {
    position: absolute;
    top: 0;
    right: 0;
    margin-top: 30px;
    font-size: 1.25rem;
  }
}

/*--------------------------------------------------
  フッター（footer）
--------------------------------------------------*/
.footer {
  position: relative;
  margin-top: -88px;
  padding: 148px 5.33333vw 20px;
  background: #005AB4;
  color: #FFF;
}
.footer::before {
  opacity: 0.5;
  position: absolute;
  top: 88px;
  left: -10px;
  width: 145px;
  height: 284px;
  background: linear-gradient(#61ABF5, #4588ED);
  transform: skewX(-45deg);
  mix-blend-mode: screen;
  pointer-events: none;
  content: '';
}
.footer__inner {
  max-width: 600px;
  margin: 0 auto;
}
.footer__email {
  width: 84vw;
  max-width: 640px;
  margin-right: auto;
  margin-left: auto;
}
.footer__email-link {
  display: flex;
  flex-direction: column-reverse;
  justify-content: center;
  align-items: flex-start;
  position: relative;
  height: 125px;
  padding: 20px 5.67823%;
  border-radius: 8px;
  background: rgba(1,48,125,0.5);
  color: #FFF;
}
.footer__email-link::after {
  position: absolute;
  top: calc(50% - 10.5px);
  right: 18px;
  width: 21px;
  height: 21px;
  border-radius: 4px;
  background: rgba(255,255,255,0.9) url(../img/icon-arrow.svg) no-repeat center / 5px auto;
  content: '';
}
.footer__email-title {
  position: relative;
  z-index: 1;
  color: #61ABF5;
  font-size: 0.6875rem;
}
.footer__email-subtitle {
  position: relative;
  z-index: 1;
  font-weight: 400;
  font-size: 1.375rem;
}
.footer__contact {
  width: 75vw;
  margin: 40px auto 0;
}
.footer__contact-title {
  font-size: 1.125rem;
}
.footer__contact-time {
  font-weight: 400;
  font-size: 0.875rem;
}
.footer__contact-school {
  margin-top: 20px;
  font-weight: 700;
  font-size: 0.875rem;
}
.footer__contact-tel {
  font-weight: 400;
  font-size: 2rem;
  line-height: 1.2;
}
.footer__contact-tel a {
  color: #FFF;
}
.footer__nav {
  width: 75vw;
  margin: 80px auto 0;
}
.footer__nav-main {
  position: relative;
}
.footer__nav-sub {
  display: none;
}
.footer__nav-item {
  margin-top: 20px;
}
.footer__nav-item:has(.footer__nav-link--login) + .footer__nav-item {
  margin-top: 0;
}
.footer__nav-item:has(.footer__nav-link--login) {
  display: none;
  position: absolute;
  top: 0;
  right: 0;
  margin-top: 0;
}
.footer__nav-link {
  display: inline-block;
  font-weight: 400;
  color: #FFF;
}
.footer__nav-link--login {
  width: 136px;
  height: 30px;
  border-radius: 4px;
  border: 1px solid rgba(255,255,255,0.5);
  text-align: center;
}
.footer__nav-sub .footer__nav-link {
  font-size: 0.875rem;
}
.footer__top {
  margin-top: 30px;
  text-align: right;
}
.footer__top-link {
  display: inline-flex;
  align-items: center;
  color: #FFF;
}
.footer__top-link::after {
  width: 29px;
  height: 28px;
  margin-left: 10px;
  border-radius: 4px;
  background: #FFF url(../img/img-arrow.svg) no-repeat center / 11px auto;
  content: '';
}
.footer__logo {
  margin-top: 40px;
  text-align: center;
}
.footer__emblem img {
  width: 112px;
}
.footer__title {
  margin-top: 20px;
  font-size: 1.125rem;
}
.footer__address {
  margin-top: 40px;
  text-align: center;
}
.footer__address p {
  margin-top: 0.5em;
  font-weight: 400;
  font-size: 0.6875rem;
}
.footer__copyright {
  margin-top: 40px;
  text-align: center;
  font-size: 0.5625rem;
  font-weight: 400;
  line-height: 2.66667;
  color: #D7DEEB;
}
@media (min-width: 960px) {
  .footer {
    margin-top: -124px;
    padding: 248px 5.33333vw 60px;
  }
  .footer::before {
    width: 25vw;
    height: 640px;
  }
  .footer__inner {
    display: flex;
    flex-wrap: wrap;
    max-width: 1084px;
  }
  .footer__content {
    flex-direction: row;
    justify-content: space-between;
    align-items: flex-start;
    gap: 60px;
  }
  .footer__email {
    width: 100%;
    max-width: inherit;
  }
  .footer__email-link {
    height: 300px;
    padding-right: 58px;
    padding-left: 58px;
  }
  .footer__email-link:hover {
    color: #FFF;
  }
  .footer__email-link::after {
    width: 64px;
    height: 64px;
    top: calc(50% - 32px);
    right: 60px;
    border-radius: 8px;
    background-size: 16px auto;
  }
  .footer__email-title {
    font-size: 1.125rem;
  }
  .footer__email-subtitle {
    font-size: 3.5rem;
    line-height: 1.2;
  }
  .footer__contact {
    display: flex;
    position: relative;
    width: 100%;
    padding-left: 60px;
  }
  .footer__contact-time {
    position: absolute;
    bottom: 0;
    left: 60px;
  }
  .footer__contact-school {
    margin-top: 0;
  }
  .footer__contact-info {
    display: flex;
    gap: 60px;
    margin-left: 60px;
  }
  .footer__logo {
    display: flex;
    align-items: center;
    gap: 40px;
    margin-top: 120px;
    margin-left: auto;
  }
  .footer__title {
    margin-top: 0;
    font-size: 1.375rem;
  }
  .footer__text {
    font-size: 1rem;
  }
  .footer__nav {
    width: auto;
    height: 1px;
    margin: 54px 0 0 60px;
  }
  .footer__nav-list {
    text-align: left;
  }
  .footer__nav-item {
    text-align: left;
  }
  .footer__nav-link {
    font-size: 1rem;
  }
  .footer__top {
    order: 1;
    width: 100%;
    margin-top: 40px;
  }
  .footer__login-btn {
    font-size: 1rem;
    padding: 16px 32px;
  }
  .footer__address {
    width: 100%;
    margin-top: 20px;
    margin-left: auto;
    text-align: right;
  }
  .footer__address p {
    font-size: 1rem;
  }
  .footer__copyright {
    order: 2;
    width: 100%;
    font-size: 0.6875rem;
    text-align: right;
  }
}