*:where(:not(html, iframe, canvas, img, svg, video, audio):not(svg *, symbol *)) {
  all: unset;
  display: revert;
}
*,
*:before,
*:after {
  box-sizing: border-box;
  width: 100%;
}
html {
  -moz-text-size-adjust: none;
  -webkit-text-size-adjust: none;
  text-size-adjust: none;
}
a,
button {
  max-width: max-content;
  cursor: revert;
  appearance: none;
}
a:has(> img) {
  width: 100%;
}
ol,
ul,
menu,
summary {
  list-style: none;
}
ol {
  counter-reset: revert;
}
img {
  max-inline-size: 100%;
  max-block-size: 100%;
  vertical-align: middle;
}
table {
  border-collapse: collapse;
}
input,
textarea {
  -webkit-user-select: auto;
}
textarea {
  white-space: revert;
}
meter {
  -webkit-appearance: revert;
  appearance: revert;
}
:where(pre) {
  all: revert;
  box-sizing: border-box;
}
::placeholder {
  color: unset;
}
:where([hidden]) {
  display: none;
}
:where([contenteditable]:not([contenteditable='false'])) {
  -moz-user-modify: read-write;
  -webkit-user-modify: read-write;
  overflow-wrap: break-word;
  -webkit-line-break: after-white-space;
  -webkit-user-select: auto;
}
:where([draggable='true']) {
  -webkit-user-drag: element;
}
:where(dialog:modal) {
  all: revert;
  box-sizing: border-box;
}
::-webkit-details-marker {
  display: none;
}
:root {
  --font-family: 'Noto Sans JP', sans-serif;
  --font-line-height: 1.5;
  --font-weight: normal;
  --font-letter-spacing: 0.075em;
  --font-h1: 2.5em;
  --font-h2: 2.2em;
  --font-h3: 1.5em;
  --font-h4: 1em;
  --color-text: #333;
  --color-notice: #ff8585;
  --color-accent: #808080;
  --color-reverse: #fff;
  --color-heading: #333;
  --background-color: #fff;
  --background-color-accent: #fff9ea;
  --background-color-header: #fff;
  --background-color-footer: #f1f1f1;
  --background-color-button: #222;
  --width-sm: 680px;
  --width-md: 980px;
  --width-lg: 1120px;
  --width-logo: 200px;
  --gap-sm: 1em;
  --gap-md: 1.5em;
  --gap-lg: 2em;
}
html {
  scroll-behavior: smooth;
  overflow-x: hidden;
}
body {
  font-size: 14px;
  background: var(--background-color);
  letter-spacing: var(--font-letter-spacing);
  color: var(--text-color);
  line-height: var(--font-line-height);
  font-family: var(--font-family);
  overflow-wrap: anywhere;
  word-break: normal;
  line-break: strict;
}
@media (min-width: 1000px) {
  body {
    font-size: 15px;
  }
}
.section {
  padding-block: 6em;
}
.prose {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: var(--gap-md);
}
.container {
  padding-inline: var(--gap-sm);
}
@media (min-width: 1000px) {
  .container {
    padding-inline: var(--gap-md);
  }
}
.container--sm {
  max-width: var(--width-sm);
}
.container--md {
  max-width: var(--width-md);
}
.container--lg {
  max-width: var(--width-lg);
}
.flex-start {
  display: flex;
}
.flex-center {
  display: flex;
  align-items: center;
  justify-content: center;
}
.flex-end {
  display: flex;
  justify-content: flex-end;
}
.flex-between {
  display: flex;
  justify-content: space-between;
}
.flex-around {
  display: flex;
  justify-content: space-around;
}
.text-center {
  text-align: center;
}
.height-100vh {
  height: 100vh;
}
.button {
  cursor: pointer;
  font-weight: 700;
}
.button--primary {
  display: block;
  padding-block: 0.75em;
  padding-inline: var(--gap-lg);
  background: var(--background-color-button);
  color: var(--color-reverse);
  border-radius: 300px;
  transition: transform 0.2s ease-in;
}
.button--secondary {
  display: block;
  padding-block: 0.75em;
  padding-inline: var(--gap-lg);
  background: var(--color-reverse);
  border-radius: 300px;
  transition: transform 0.2s ease-in;
}
.button--lp {
  max-width: max-content;
  text-align: center;
  margin-block-start: 2em;
}
.button--primary:hover,
.button--secondary:hover {
  transform: translateY(-2px);
}
.h1 {
  font-weight: 700;
  font-size: var(--font-h1);
}
.h2 {
  font-weight: 700;
  font-size: var(--font-h2);
}
.h3 {
  font-weight: 700;
  font-size: var(--font-h3);
}
.h4 {
  font-weight: 700;
  font-size: var(--font-h4);
}
.contact-form th span {
  color: #ff8585;
  font-size: 12px;
}
.contact-form th {
  display: block;
}
.contact-form td {
  display: block;
  margin-block-end: var(--gap-md);
}
.contact-form input:not([type='checkbox']),
.contact-form select,
.contact-form textarea {
  border: 1px solid var(--color-accent);
  padding-inline: var(--gap-sm);
  padding-block: var(--gap-sm);
  font-size: 16px;
}
.error {
  color: red;
}
.contact-form input[type='checkbox'] {
  border: 1px solid #000;
  width: 15px;
  height: 15px;
  cursor: pointer;
  transform: translateY(2px);
  appearance: checkbox;
  -webkit-appearance: checkbox;
}
.contact-form textarea {
  resize: both;
}
.contact-form select {
  cursor: pointer;
}
.contact-form-text {
  margin-block: var(--gap-md);
}
input::placeholder,
textarea::placeholder {
  color: #999;
  font-size: 10px;
}
.header {
  position: sticky;
  top: 0;
  right: 0;
  left: 0;
  padding-block: 0.75em;
  background: var(--background-color-header);
  z-index: 99;
}
.logo {
  max-width: var(--width-logo);
  width: 40%;
}
.logo > a {
  display: block;
}
.kv {
  position: relative;
  height: 80vh;
  overflow: hidden;
}
.kv-video {
  position: absolute;
  top: 50%;
  left: 50%;
  min-width: 100%;
  min-height: 100%;
  width: auto;
  height: auto;
  z-index: -1;
  transform: translate(-50%, -50%);
  object-fit: cover;
  max-width: 420px;
}
@media (min-width: 1000px) {
  .kv-video {
    max-width: 100%;
  }
}

/*
.kv {
  padding-block: var(--gap-lg);
  background-position: center center;
  background-size: cover;
  background-repeat: no-repeat;
}
.kv > .prose {
  height: 70vh;
}
.kv h1 {
  font-weight: 700;
  padding-block: 0.5em;
  padding-inline: var(--gap-sm);
  background: var(--background-color-accent);
  font-size: 2em;
  max-width: max-content;
  margin-block-end: var(--gap-sm);
}
.kv h2 {
  font-weight: 700;
  padding-block: 0.5em;
  padding-inline: var(--gap-sm);
  background: var(--background-color);
  font-size: 1em;
  max-width: max-content;
}
@media (min-width: 700px) {
  .kv h2 {
    font-size: 1.2em;
  }
}
*/
.section h2 {
  position: relative;
  color: var(--color-heading);
  text-align: center;
  margin-block-end: var(--gap-md);
  padding-block-end: 0.5em;
}
.section h2:before {
  position: absolute;
  width: 50px;
  height: 3px;
  content: '';
  background: #e59f5c;
  bottom: 0;
  right: 0;
  left: 0;
  margin-inline: auto;
}
.section h3 {
  margin-block-end: 2em;
}
.intro p {
  text-align: center;
  color: var(--color-accent);
  font-weight: 700;
  font-size: var(--font-h3);
}
.intro p:not(:last-child) {
  margin-block-end: 1em;
}
.media {
  background: var(--background-color-accent);
}
.lesson h2 {
  margin-block-start: var(--gap-md);
}
.lesson-list {
  margin-block-start: var(--gap-lg);
}
.lesson-item:not(:last-child) {
  margin-block-end: var(--gap-md);
}
.lesson-button {
  position: relative;
  font-size: 1.2em;
  padding-block: var(--gap-sm);
  padding-inline: var(--gap-sm);
  background: #eee;
  max-width: 100%;
  font-weight: 700;
  margin-block-end: 0 !important;
}
.lesson-answer {
  padding-block: var(--gap-sm);
  padding-inline: var(--gap-sm);
  background: #fcfcfc;
}
.tutor {
  background: var(--background-color-accent);
}
.tutor-card {
  display: grid;
  grid-template-columns: 1fr;
  grid-template-rows: auto;
  gap: var(--gap-md);
}
.tutor-card--media img {
  max-width: 200px;
  margin-inline: auto;
}
@media (min-width: 1000px) {
  .tutor-card {
    grid-template-columns: 1fr 1fr;
  }
  .tutor-card--media {
    grid-template-columns: 1fr 4fr;
  }
}
@media (min-width: 700px) {
  .tutor-card--media {
    grid-template-columns: 1fr 4fr;
  }
}
.tutor-info {
  margin-block-end: 4em;
}
.tutor-info > p {
  margin-block: var(--gap-md);
}
.tutor-info > a {
  display: block;
  max-width: max-content;
  text-decoration: underline;
}
.tutor-info > a:not(:last-child) {
  margin-block-end: 0.5em;
}
.tutor-info > a:hover {
  text-decoration: none;
  color: var(--color-accent);
}
.overview {
  background: var(--background-color-accent);
}
.overview-list {
  display: grid;
  grid-template-columns: 1fr;
  grid-template-rows: auto;
  margin-block-start: var(--gap-lg);
margin-block-end: var(--gap-md);
}
@media (min-width: 1000px) {
  .overview-list {
    grid-template-columns: 1fr 2fr;
    row-gap: var(--gap-sm);
  }
}
.overview-text {
  padding-inline: var(--gap-sm);
  padding-block: var(--gap-sm);
  background: var(--background-color);
  margin-block-end: 2em;
}
.overview-text > p:not(:last-child) {
  margin-block-end: var(--gap-md);
}
.overview-list > dt,
.overview-list > dd {
  padding-inline: var(--gap-sm);
  padding-block: var(--gap-sm);
}
.overview-list > dd {
  background: var(--background-color);
}
.overview-list > dt {
  background: #eee;
  text-align: center;
  font-weight: 700;
  display: flex;
  justify-content: center;
  align-items: center;
}
.overview-list > dt:not(:first-child) {
  margin-block-start: var(--gap-sm);
}
@media (min-width: 1000px) {
  .overview-list > dt:not(:first-child) {
    margin-block-start: 0;
  }
}
.footer {
  padding-block-start: 50% !important;
  background-size: contain;
  background-position: center top;
  background-repeat: no-repeat;
  background-color: var(--background-color-footer);
}
@media (min-width: 1000px) {
  .footer {
    padding-block-start: 28.125% !important;
  }
}
.footer-logo {
  max-width: 100px;
  display: block;
  margin-inline: auto;
  margin-block: var(--gap-lg);
}
.footer-menu {
  display: flex;
  justify-content: center;
  align-items: center;
  flex-direction: column;
  gap: var(--gap-sm);
  margin-block: var(--gap-lg);
}
.footer-menu > li {
  text-align: center;
  max-width: max-content;
}
.footer-menu > li > a {
  text-decoration: underline;
}
.footer-menu > li > a:hover {
  text-decoration: none;
  color: var(--color-accent);
}
.sns-list {
  display: flex;
  justify-content: center;
  gap: var(--gap-sm);
  margin-block: var(--gap-lg);
}
.sns-list > li {
  width: 48px;
  height: 48px;
}
.sns-list > li > a {
  transition: transform 0.2s ease-in;
  display: block;
}
.sns-list > li > a:hover {
  transform: translateY(-2px);
}
.copylights {
  font-size: 12px;
  padding-block: 0.5em;
}
.youtube {
  height: 0;
  padding-top: 56.25%;
  position: relative;
}
.youtube iframe {
  position: absolute;
  top: 0;
  right: 0;
  width: 100%;
  height: 100%;
}
.thoughts-card {
  display: grid;
  grid-template-columns: 1fr;
  grid-template-rows: auto;
  margin-block-start: var(--gap-md);
  gap: 2em;
}
@media (min-width: 700px) {
  .thoughts-card {
    grid-template-columns: 1fr 3fr;
  }
}
.thoughts-card:not(:last-child) {
  margin-block-end: 4em;
}
.thoughts-card__name {
  margin-block: 1em;
}
.thoughts-card__comment {
  font-size: 14px;
  padding-inline: 1em;
  padding-block: 1em;
  background: #f1f1f1;
  border-radius: 10px;
}
strong {
  font-weight: 700;
}
.thoughts-card a {
  display: flex;
  align-items: center;
  gap: 0.25em;
  background: #000;
  min-width: 100%;
  background: linear-gradient(45deg, #feda75, #fa7e1e, #d62976, #962fbf, #4f5bd5);
  color: #fff;
  justify-content: center;
  margin-block-start: 1em;
  border-radius: 10px;
  transition: opacity 0.2s ease-in-out;
}
.thoughts-card a:hover {
  opacity: 0.7;
}
.thoughts-card a > img {
  width: 45px;
  height: 45px;
}
.thoughts-card a > span {
  max-width: max-content;
}
.no-gap {
  margin-block-start: 0 !important;
  margin-block-end: 0 !important;
  margin-inline-start: 0 !important;
  margin-inline-end: 0 !important;
}