*,
*::before,
*::after {
  box-sizing: border-box; }

html {
  scroll-behavior: smooth; }
  @media screen and (max-width: 840px) {
    html {
      scroll-padding-top: 64px; } }

body {
  margin: 0;
  background: #fff;
  color: #000;
  font-family: "Noto Sans JP", "Noto Sans", sans-serif;
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased; }

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

a {
  color: #0279d1; }

p {
  margin: 0; }

ul,
ol {
  margin: 0;
  padding: 0;
  list-style: none; }

button {
  border: 0;
  background: none;
  font: inherit;
  color: inherit;
  cursor: pointer; }

.page {
  min-height: 100vh; }

.main {
  background: #dbf8fd;
  border: 1px solid rgba(0, 0, 0, 0.1);
  padding: 24px 0 60px; }
  @media screen and (max-width: 840px) {
    .main {
      padding-top: 96px; } }
  @media screen and (max-width: 540px) {
    .main {
      padding: 64px 0 0;
      box-shadow: 0 3px 5px rgba(0, 0, 0, 0.2); } }
  .main__inner {
    width: 650px;
    max-width: 100%;
    margin: 0 auto;
    background: #fff;
    border-radius: 20px;
    overflow: hidden; }
    @media screen and (max-width: 540px) {
      .main__inner {
        border-radius: 0; } }

.header {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 100;
  padding: 24px; }
  @media screen and (max-width: 840px) {
    .header {
      right: 0;
      display: flex;
      align-items: center;
      height: 64px;
      padding: 16px;
      background: #fff; } }
  @media screen and (max-width: 540px) {
    .header {
      padding: 8px 10px; } }
  .header__logo {
    display: block;
    max-width: 156px;
    width: 100%; }
    .header__logo img {
      width: 100%; }
    @media screen and (max-width: 540px) {
      .header__logo {
        width: 30%; } }

.nav {
  position: fixed;
  top: 100px;
  left: 24px;
  z-index: 100;
  width: 256px;
  background: #fff;
  border-radius: 8px;
  box-shadow: 0 3px 7px rgba(0, 0, 0, 0.2); }
  @media screen and (max-width: 840px) {
    .nav {
      top: 10px;
      right: 10px;
      left: auto;
      width: 200px; } }
  .nav__toggle {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    padding: 16px;
    border-radius: 8px; }
    @media screen and (max-width: 840px) {
      .nav__toggle {
        padding: 10px; } }
  .nav__toggle-label {
    font-size: 16px;
    font-weight: 700;
    color: #333; }
  .nav__toggle-icon {
    width: 12px;
    height: 12px;
    background: url("../images/arrow.png") center/contain no-repeat; }
  .nav.is-open .nav__toggle-icon {
    transform: rotate(180deg);
    transition: transform 0.25s ease; }
  .nav__panel {
    overflow: hidden;
    background: #f8f8f8;
    border-radius: 0 0 8px 8px;
    transition: height 0.25s ease; }
  .nav__list {
    padding-bottom: 16px; }
  .nav__link {
    display: block;
    padding: 16px;
    font-size: 16px;
    font-weight: 700;
    color: #333;
    text-align: center;
    text-decoration: none; }
    .nav__link--cta {
      margin: 0 16px;
      padding: 16px;
      background: #009dd9;
      border-radius: 24px;
      color: #fff; }

.qr-banner {
  position: fixed;
  top: 0;
  right: 0;
  z-index: 90;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 18px;
  padding: 24px 48px; }
  @media screen and (max-width: 840px) {
    .qr-banner {
      display: none; } }
  .qr-banner__text {
    margin: 0;
    font-size: 18px;
    font-weight: 700;
    line-height: 1.7;
    text-align: center; }
  .qr-banner__code {
    width: 160px;
    border-radius: 8px; }

.hero {
  text-align: center; }
  .hero__kv {
    width: 100%;
    border-radius: 20px 20px 0 0; }
    @media screen and (max-width: 540px) {
      .hero__kv {
        border-radius: 0; } }
  .hero__period {
    background: #ffea46;
    padding: 16px; }
  .hero__period-label {
    margin: 0 0 8px;
    font-size: 18px;
    font-weight: 700;
    line-height: 1; }
  .hero__period-value {
    margin: 0;
    font-size: 24px;
    font-weight: 700;
    line-height: 1; }

.section {
  padding: 0 20px; }
  @media screen and (max-width: 540px) {
    .section {
      margin: 0 16px;
      padding: 0;
      max-width: calc(100% - 32px); } }
  .section--faq {
    margin: 0;
    padding: 0 20px 60px;
    max-width: none;
    background: #a4dfec; }
    @media screen and (max-width: 540px) {
      .section--faq {
        padding: 0 16px 48px; } }
  .section--terms {
    padding-bottom: 60px; }
    @media screen and (max-width: 540px) {
      .section--terms {
        padding-bottom: 32px; } }
  .section__title {
    padding: 32px 0 20px;
    margin-top: 1rem;
    margin-bottom: 1.5rem;
    font-size: 32px;
    font-weight: 700;
    line-height: 1;
    text-align: center; }
    @media screen and (max-width: 540px) {
      .section__title {
        padding: 48px 0 8px; } }
  .section__block {
    display: flex;
    flex-direction: column;
    gap: 20px;
    margin-bottom: 40px; }
    .section__block:last-child {
      margin-bottom: 0; }
  .section__heading {
    margin: 0;
    padding: 20px 0;
    background: #009dd9;
    border-radius: 20px;
    color: #fff;
    font-size: 24px;
    font-weight: 700;
    line-height: 1;
    text-align: center; }
  .section__body {
    display: flex;
    flex-direction: column;
    gap: 12px;
    font-size: 18px;
    font-weight: normal;
    line-height: 1.7;
    width: 90%;
    margin: 0 auto; }
    @media screen and (max-width: 540px) {
      .section__body {
        font-size: 16px; } }

.text-link {
  color: #0279d1;
  text-decoration: underline; }
  .text-link--small {
    font-size: 12px;
    font-weight: 400; }

.prize {
  display: flex;
  flex-direction: column;
  gap: 20px; }
  .prize__visual {
    position: relative;
    width: 100%;
    max-width: 480px;
    margin: 0 auto;
    background: #eee;
    border-radius: 20px;
    overflow: hidden; }
    .prize__visual img {
      width: 100%; }
  .prize__caption {
    position: absolute;
    right: 10px;
    bottom: 10px;
    left: 10px;
    margin: 0;
    padding: 8px 16px;
    background: rgba(0, 0, 0, 0.8);
    border-radius: 16px;
    color: #fff;
    font-size: 24px;
    font-weight: 700;
    line-height: 1;
    text-align: center; }
    @media screen and (max-width: 540px) {
      .prize__caption {
        font-size: 16px; } }
  .prize__note {
    font-size: 20px;
    font-weight: 700;
    color: #333;
    text-align: center; }

.steps {
  display: flex;
  flex-direction: column;
  gap: 20px;
  padding-bottom: 30px; }
  @media screen and (max-width: 540px) {
    .steps {
      padding-bottom: 0; } }
  .steps__item {
    display: flex;
    flex-direction: column;
    align-items: center; }
  .steps__arrow {
    width: 42px;
    margin-top: -2px; }

.step-card {
  width: 100%;
  border: 2px solid #000;
  border-radius: 20px;
  overflow: hidden; }
  .step-card__title {
    margin: 0;
    padding: 16px 0;
    border-bottom: 2px dotted #000;
    font-size: 24px;
    font-weight: 700;
    line-height: 1;
    text-align: center; }
    @media screen and (max-width: 540px) {
      .step-card__title {
        font-size: 20px; } }
  .step-card__body {
    display: flex;
    flex-direction: column;
    gap: 8px;
    width: 90%;
    margin: 0 auto;
    padding: 16px 0;
    font-size: 18px;
    font-weight: 700;
    line-height: 1.7; }
    @media screen and (max-width: 540px) {
      .step-card__body {
        gap: 2px;
        padding: 0 0 14px;
        font-size: 16px; } }
    .step-card__body--row {
      flex-direction: row;
      align-items: center;
      gap: 16px; }
      @media screen and (max-width: 840px) {
        .step-card__body--row {
          flex-direction: row-reverse; } }
      @media screen and (max-width: 540px) {
        .step-card__body--row {
          padding: 4px 0 14px; } }
  .step-card__illust {
    flex: none;
    width: 160px;
    height: 160px;
    object-fit: contain; }
  .step-card__note {
    font-size: 14px;
    font-weight: 400; }

.receipt-guide {
  display: flex;
  flex-direction: column;
  gap: 20px;
  margin-top: 40px; }
  .receipt-guide__lead {
    width: 90%;
    margin: 0 auto;
    font-size: 16px;
    font-weight: 400;
    text-align: center;
    line-height: 1.7; }
    @media screen and (max-width: 540px) {
      .receipt-guide__lead {
        font-size: 14px; } }
  .receipt-guide__sample {
    width: 100%;
    margin: 0 auto; }
  .receipt-guide__rules {
    width: 90%;
    margin: 0 auto;
    font-size: 16px;
    font-weight: 700;
    line-height: 1.7; }
    .receipt-guide__rules p + p {
      margin-top: 1em; }
    @media screen and (max-width: 540px) {
      .receipt-guide__rules {
        font-size: 14px; } }

.receipt-example {
  display: flex;
  flex-direction: column;
  gap: 16px; }
  .receipt-example--ok.flex {
    display: flex;
    align-items: center; }
    @media screen and (max-width: 540px) {
      .receipt-example--ok.flex {
        display: block;
        text-align: center; } }
  @media screen and (max-width: 540px) {
    .receipt-example--ok img {
      margin: 0 auto;
      width: 240px; } }
  .receipt-example--ng img {
    border-radius: 20px; }
  .receipt-example__label {
    font-size: 24px;
    font-weight: 700;
    text-align: center; }
    @media screen and (max-width: 540px) {
      .receipt-example__label {
        font-size: 20px; } }
  .receipt-example__text {
    font-size: 16px;
    line-height: 1.4;
    color: #333;
    text-align: left; }
  .receipt-example__list {
    display: flex;
    flex-wrap: wrap;
    gap: 20px 4%;
    justify-content: center; }
    .receipt-example__list li {
      display: flex;
      flex-direction: column;
      align-items: center;
      gap: 10px;
      width: 182px;
      max-width: 48%;
      text-align: center; }
      .receipt-example__list li p {
        font-size: 14px;
        font-weight: 700;
        line-height: 1.4;
        color: #333; }

.terms {
  display: flex;
  flex-direction: column;
  gap: 32px; }
  @media screen and (max-width: 540px) {
    .terms {
      gap: 28px;
      padding-bottom: 32px; } }
  .terms__scroll {
    height: 480px;
    overflow: auto;
    border: 2px solid #ddd;
    border-radius: 16px; }
    @media screen and (max-width: 540px) {
      .terms__scroll {
        height: 400px; } }
  .terms__content {
    padding: 16px;
    font-size: 14px;
    line-height: 1.7; }
    .terms__content p {
      margin: 0; }
    @media screen and (max-width: 540px) {
      .terms__content {
        font-size: 12px; } }

.btn-cta {
  display: block;
  padding: 20px;
  background: #07c800;
  border-radius: 42px;
  color: #fff;
  font-size: 24px;
  font-weight: 700;
  line-height: 1.7;
  text-align: center;
  text-decoration: none; }
  @media screen and (max-width: 540px) {
    .btn-cta {
      font-size: 20px;
      line-height: 1; } }

.faq {
  display: flex;
  flex-direction: column;
  gap: 20px;
  margin-bottom: 32px; }
  .faq__item {
    background: #fff;
    border-radius: 16px;
    overflow: hidden; }
    .faq__item.is-open .faq__toggle::after {
      transform: translate(-50%, -50%) rotate(90deg);
      opacity: 0; }
  .faq__question {
    display: flex;
    align-items: center;
    gap: 8px;
    width: 100%;
    padding: 12px 16px;
    text-align: left; }
    @media screen and (max-width: 540px) {
      .faq__question {
        width: 96%; } }
  .faq__icon {
    flex: none;
    font-family: 'Material Icons';
    font-size: 24px; }
  .faq__text {
    flex: 1;
    font-family: "Lato", sans-serif;
    font-size: 18px;
    font-weight: 700;
    line-height: 1.5;
    color: #333; }
    @media screen and (max-width: 540px) {
      .faq__text {
        font-size: 16px;
        line-height: 1.7; } }
  .faq__toggle {
    position: relative;
    flex: none;
    width: 20px;
    height: 20px; }
    .faq__toggle::before, .faq__toggle::after {
      content: "";
      position: absolute;
      top: 50%;
      left: 50%;
      background: #333;
      transform: translate(-50%, -50%);
      transition: transform 0.25s ease; }
    .faq__toggle::before {
      width: 14px;
      height: 2px; }
    .faq__toggle::after {
      width: 2px;
      height: 14px; }
  .faq__answer {
    overflow: hidden;
    border-top: 2px dotted #ddd;
    transition: height 0.25s ease; }
    .faq__answer[hidden] {
      display: none; }
    .faq__answer p {
      padding: 16px;
      font-family: "Lato", sans-serif;
      font-size: 14px;
      line-height: 1.7;
      color: #333; }
      .faq__answer p + p {
        padding-top: 0; }

.contact {
  display: flex;
  flex-direction: column;
  gap: 16px;
  width: 90%;
  margin: 0 auto;
  padding-bottom: 60px;
  font-size: 16px;
  line-height: 1.7; }
  @media screen and (max-width: 540px) {
    .contact {
      font-size: 14px; } }
  .contact__mail {
    text-decoration: underline; }

.footer {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
  width: 100%;
  margin: 0 auto;
  padding: 24px 0;
  background: #0c629b; }
  .footer__share-label {
    margin: 0;
    color: #fff;
    font-size: 20px;
    line-height: 1.4;
    text-align: center; }
  .footer__share-link {
    display: block;
    margin: 0 24px; }
    .footer__share-link img {
      width: 48px;
      height: 48px; }