:root {
  --green: #007947;
  --green-dark: #005f3b;
  --green-soft: #eaf5e7;
  --mint: #44c5aa;
  --sky: #27acd2;
  --ink: #1d1d1d;
  --muted: #666;
  --line: #9fd9ca;
  --seminar-bg: #d7f0fa;
  --seminar-blue: #2484c6;
  --seminar-tab: #666;
  --footer: #d9ecd4;
  --white: #fff;
  --content: 1240px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--white);
  font-family: "Helvetica Neue", Arial, "Hiragino Kaku Gothic ProN", "Yu Gothic", Meiryo, sans-serif;
  font-size: 16px;
  letter-spacing: 0;
}

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

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

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(255, 255, 255, 0.96);
  border-bottom: 1px solid rgba(0, 0, 0, 0.06);
}

.header-inner {
  width: min(var(--content), calc(100% - 40px));
  min-height: 56px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  flex: 0 0 auto;
  width: 137px;
}

.brand img {
  width: 100%;
}

.global-nav {
  display: flex;
  align-items: center;
  gap: 22px;
  color: #252525;
  font-size: 14px;
  font-weight: 700;
  white-space: nowrap;
}

.global-nav a:not(.nav-button) {
  padding: 20px 0;
}

.global-nav a:not(.nav-button):hover {
  color: var(--green);
}

.nav-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 28px;
  padding: 0 16px;
  border-radius: 3px;
  color: var(--white);
  font-size: 14px;
  line-height: 1;
}

.nav-button-primary {
  background: var(--green);
}

.nav-button-secondary {
  background: #18a669;
}

.nav-toggle {
  display: none;
  width: 38px;
  height: 38px;
  padding: 8px;
  border: 0;
  background: transparent;
}

.nav-toggle span {
  display: block;
  height: 2px;
  margin: 5px 0;
  background: var(--green);
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.hero {
  position: relative;
  overflow: hidden;
  padding: 60px 0;
  background: #d9ebd3;
}

.hero-picture {
  display: block;
  width: 100%;
  background: #d9ebd3;
}

.hero-image {
  width: min(1330px, 100%);
  margin: 0 auto;
}

.entry-badge {
  position: absolute;
  right: max(22px, calc((100vw - 1120px) / 2 + 10px));
  top: 0;
  transform: translateY(-50%);
  width: clamp(86px, 11vw, 139px);
  border-radius: 50%;
  transition: transform 0.2s ease;
  z-index: 18;
}

.entry-badge.is-following {
  position: fixed;
  right: 50px;
  top: var(--entry-badge-follow-top);
}

.entry-badge:hover {
  transform: translateY(calc(-50% - 3px));
}

.concept-section {
  position: relative;
  background: linear-gradient(180deg, #f7fcf4 0%, #edf7e9 100%);
  padding: 104px 0 72px;
}

.section-inner {
  width: min(var(--content), calc(100% - 40px));
  margin: 0 auto;
}

.section-inner-narrow {
  width: min(1186px, calc(100% - 40px));
}

.section-title {
  display: flex;
  justify-content: center;
}

.section-title img {
  height: auto;
}

.section-title-text {
  display: flex;
  flex-direction: column;
  align-items: center;
  line-height: 1;
}

.section-title-en {
  color: var(--green);
  font-size: 44px;
  font-weight: 900;
}

.section-title-ja {
  margin-top: 13px;
  color: #111;
  font-size: 17px;
  font-weight: 800;
}

.concept-catchcopy {
  width: fit-content;
  max-width: 100%;
  margin: 34px auto 20px;
  padding: 0 12px 10px;
  border-bottom: 2px dotted var(--green);
  color: var(--green);
  font-size: 32px;
  font-weight: 900;
  line-height: 1.35;
  text-align: center;
}

.concept-catchcopy small {
  font-size: 20px;
  font-weight: 900;
}

.concept-lead {
  width: min(760px, 100%);
  margin: 0 auto;
  color: #222;
  font-size: 16px;
  font-weight: 700;
  line-height: 2;
  text-align: center;
}

.concept-cards {
  width: min(1186px, 100%);
  margin: 64px auto 0;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 380px));
  justify-content: center;
  gap: 22px;
}

.concept-card {
  position: relative;
  min-height: 300px;
  padding: 46px 24px 26px;
  border: 2px solid var(--line);
  border-radius: 9px;
  background: var(--white);
  text-align: center;
}

.card-number {
  position: absolute;
  left: 16px;
  top: -24px;
  color: var(--mint);
  font-size: 39px;
  font-style: italic;
  font-weight: 900;
  line-height: 1;
}

.card-icon {
  height: 69px;
  width: auto;
  margin: 0 auto 24px;
}

.concept-card h2 {
  margin: 0;
  color: #111;
  font-size: 20px;
  font-weight: 800;
  line-height: 1.7;
}

.concept-card h2 span {
  display: inline-block;
  padding-bottom: 3px;
  border-bottom: 2px dotted var(--green);
}

.concept-card p {
  width: fit-content;
  max-width: 100%;
  margin: 18px auto 0;
  color: #555;
  font-size: 16px;
  font-weight: 700;
  line-height: 1.8;
  text-align: left;
}

.concept-card-line {
  display: block;
  white-space: nowrap;
}

.map-section {
  position: relative;
  padding: 74px 0 150px;
  background: var(--white);
}

.section-character,
.footer-character {
  position: absolute;
  z-index: 3;
  height: auto;
  pointer-events: none;
}

.map-character {
  top: -28px;
  left: calc(50% + 150px);
  width: 60px;
}

.hall-map {
  width: 80%;
  margin: 42px auto 0;
  overflow: hidden;
}

.hall-map img {
  width: 100%;
  border-radius: 1px;
}

.section-heading-text {
  display: flex;
  flex-direction: column;
  align-items: center;
  line-height: 1;
}

.section-heading-en {
  color: #555;
  font-size: 46px;
  font-weight: 900;
}

.section-heading-ja {
  margin-top: 8px;
  color: #111;
  font-size: 16px;
  font-weight: 800;
}

.section-heading-text-access .section-heading-en {
  color: var(--sky);
}

.seminar-section {
  position: relative;
  scroll-margin-top: 56px;
  padding: 100px 0 150px;
  background: var(--seminar-bg);
}

.seminar-character {
  top: -68px;
  left: max(24px, calc(50% - 520px));
  width: 87px;
}

.seminar-title {
  display: flex;
  flex-direction: column;
  align-items: center;
  line-height: 1;
}

.seminar-title-en {
  color: var(--seminar-blue);
  font-size: 46px;
  font-weight: 900;
}

.seminar-title-ja {
  margin-top: 8px;
  color: #111;
  font-size: 16px;
  font-weight: 800;
}

.seminar-lead {
  width: min(900px, 100%);
  margin: 42px auto 0;
  color: #111;
  font-size: 16px;
  font-weight: 700;
  line-height: 2;
}

.seminar-schedule {
  width: min(1186px, 100%);
  margin: 44px auto 0;
  overflow: visible;
  border: 1px solid #999;
  border-top: 0;
  border-radius: 0 0 18px 18px;
  background: var(--white);
}

.seminar-tabs {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 22px;
  margin: 0 -1px;
  background: var(--seminar-bg);
}

.seminar-tab {
  position: relative;
  min-height: 74px;
  padding: 10px 20px;
  border: 1px solid #999;
  border-bottom: 0;
  border-radius: 22px 22px 0 0;
  background: var(--seminar-tab);
  color: var(--white);
  font-family: inherit;
  font-size: 25px;
  font-weight: 900;
  letter-spacing: 0;
  line-height: 1.25;
  cursor: pointer;
}

.seminar-tab.is-active {
  z-index: 2;
  background: var(--white);
  color: #111;
}

.seminar-tab.is-active::after {
  position: absolute;
  right: 0;
  bottom: -2px;
  left: 0;
  height: 3px;
  background: var(--white);
  content: "";
}

.seminar-tab:focus-visible,
.seminar-reserve-button:focus-visible {
  outline: 3px solid rgba(36, 132, 198, 0.45);
  outline-offset: -4px;
}

.seminar-panel {
  overflow-x: auto;
  padding: 50px 30px 10px;
  border-top: 1px solid #999;
}

.seminar-panel img {
  width: 100%;
  min-width: 680px;
  margin: 0 auto;
}

.seminar-reserve-button {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 17px;
  width: min(510px, calc(100% - 40px));
  min-height: 62px;
  margin: 24px auto 38px;
  padding: 12px 27px 12px 34px;
  border: 1px solid #333;
  border-radius: 999px;
  background: var(--white);
  box-shadow: 0 4px 0 #333;
  color: #333;
  font-size: 18px;
  font-weight: 800;
  line-height: 1.45;
  text-align: center;
  transition: transform 0.18s ease, box-shadow 0.18s ease;
}

.seminar-reserve-button:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 0 #333;
}

.seminar-reserve-button img {
  flex: 0 0 auto;
  width: 39px;
}

.access-section {
  position: relative;
  padding: 100px 0 150px;
  background: var(--white);
}

.access-character {
  top: -52px;
  left: max(24px, calc(50% - 520px));
  width: 63px;
}

.access-layout {
  width: 100%;
  margin: 40px auto 30px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 34px;
  align-items: start;
}

.google-map {
  overflow: hidden;
  aspect-ratio: 4 / 3;
  border: 1px solid #d9d9d9;
}

.google-map iframe {
  display: block;
  width: 100%;
  height: 100%;
  border: 0;
}

.access-copy h2 {
  margin: 0 0 12px;
  color: #111;
  font-size: 20px;
  font-weight: 900;
  line-height: 1.5;
}

.access-copy h3 {
  margin: 18px 0 8px;
  color: var(--sky);
  font-size: 20px;
  font-weight: 900;
}

.access-copy p {
  margin: 0 0 12px;
  color: #333;
  font-size: 16px;
  font-weight: 400;
  line-height: 1.6;
}

.access-copy strong {
  position: relative;
  display: inline-block;
  padding-left: 17px;
  margin-bottom: 2px;
  color: var(--sky);
  font-size: 18px;
  font-weight: 900;
}

.access-copy strong::before {
  position: absolute;
  top: 0.48em;
  left: 0;
  width: 10px;
  height: 10px;
  background: var(--sky);
  content: "";
}

.access-button {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 20px;
  width: 100%;
  min-height: 76px;
  margin: 0 auto;
  padding: 0 84px;
  border: 0;
  border-radius: 8px;
  background: #59acd1;
  color: var(--white);
  font-family: inherit;
  font-size: 25px;
  font-weight: 800;
  line-height: 1.3;
  cursor: pointer;
  box-shadow: none;
}

.access-button-icon {
  position: absolute;
  right: 32px;
  display: grid;
  place-items: center;
  width: 32px;
  height: 32px;
  color: var(--white);
  font-size: 32px;
  font-weight: 400;
  line-height: 1;
}

.access-button[aria-expanded="true"] {
  border-radius: 8px 8px 0 0;
}

.access-more {
  width: 100%;
  margin: 0 auto;
  padding: 34px 38px 40px;
  background: #e4f3f9;
  color: #111;
}

.access-more h2 {
  margin: 0 0 10px;
  color: #4da0c8;
  font-size: 24px;
  font-weight: 900;
}

.access-more h2:not(:first-child) {
  margin-top: 44px;
}

.access-more h3 {
  margin: 14px 0 4px;
  color: #4da0c8;
  font-size: 18px;
  font-weight: 900;
  line-height: 1.5;
}

.access-more p {
  margin: 0;
  font-size: 16px;
  font-weight: 400;
  line-height: 1.6;
}

.parking-list {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
  margin-top: 24px;
}

.parking-list section {
  padding-right: 18px;
  border-right: 1px solid #63afd2;
}

.parking-list section:last-child {
  border-right: 0;
}

.site-footer {
  position: relative;
  background: var(--footer);
  padding: 100px 0 22px;
}

.footer-character-left {
  top: -42px;
  left: max(24px, calc(50% - 580px));
  width: 69px;
}

.footer-character-right {
  top: -52px;
  right: max(24px, calc(50% - 580px));
  width: 110px;
}

.footer-inner {
  width: min(var(--content), calc(100% - 40px));
  margin: 0 auto;
}

.sponsor-box {
  width: min(1200px, 100%);
  margin: 0 auto;
  padding: 54px 74px 48px;
  border-radius: 24px;
  background: var(--white);
}

.sponsor-box dl {
  margin: 0;
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 40px 34px;
  align-items: center;
}

.sponsor-box dl > div {
  display: contents;
}

.sponsor-box dt {
  color: #222;
  font-size: 16px;
  font-weight: 800;
}

.sponsor-box dd {
  margin: 0;
  font-size: 16px;
  font-weight: 700;
  line-height: 1.8;
}

.support-logos {
  display: flex;
  align-items: center;
  gap: 42px;
  flex-wrap: wrap;
}

.support-logos img:nth-child(1) {
  width: 271px;
}

.support-logos img:nth-child(2) {
  width: 198px;
}

.support-logos img:nth-child(3) {
  width: 256px;
}

.footer-links {
  width: min(1200px, 100%);
  margin: 46px auto 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  color: #333;
  font-size: 16px;
  font-weight: 700;
}

.policy-links {
  display: flex;
  align-items: center;
  gap: 34px;
  flex-wrap: wrap;
}

.policy-links a {
  text-decoration: underline;
  text-underline-offset: 4px;
}

.policy-links a::after {
  content: " >";
  text-decoration: none;
}

.contact-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 330px;
  min-height: 64px;
  border: 2px solid #4f7040;
  border-radius: 999px;
  background: var(--white);
  color: #2e3b25;
  font-size: 18px;
  font-weight: 800;
}

.contact-button img {
  width: 26px;
  height: auto;
  margin-left: 10px;
}

.copyright-line {
  width: 100%;
  height: 1px;
  margin-top: 44px;
  background: var(--white);
}

.copyright {
  margin: 20px 0 0;
  color: #333;
  font-size: 16px;
  font-weight: 700;
  text-align: center;
}

@media (max-width: 900px) {
  .header-inner {
    min-height: 58px;
  }

  .nav-toggle {
    display: block;
  }

  .global-nav {
    position: absolute;
    top: 58px;
    left: 0;
    right: 0;
    display: grid;
    grid-template-columns: 1fr;
    gap: 0;
    padding: 10px 20px 20px;
    background: rgba(255, 255, 255, 0.98);
    border-bottom: 1px solid rgba(0, 0, 0, 0.08);
    box-shadow: 0 18px 28px rgba(0, 0, 0, 0.08);
    transform: translateY(-130%);
    opacity: 0;
    pointer-events: none;
    transition: transform 0.24s ease, opacity 0.24s ease;
  }

  .global-nav.is-open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }

  .global-nav a:not(.nav-button) {
    padding: 14px 4px;
    border-bottom: 1px solid rgba(0, 0, 0, 0.08);
  }

  .nav-button {
    min-height: 40px;
    margin-top: 12px;
    font-size: 13px;
  }

  .nav-toggle.is-open span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
  }

  .nav-toggle.is-open span:nth-child(2) {
    opacity: 0;
  }

  .nav-toggle.is-open span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
  }

  .concept-cards {
    grid-template-columns: 1fr;
    width: min(380px, 100%);
    gap: 34px;
  }

  .access-layout {
    grid-template-columns: 1fr;
    width: min(560px, 100%);
  }

  .sponsor-box dl {
    grid-template-columns: 1fr;
    gap: 14px;
  }

  .sponsor-box dl > div {
    display: block;
  }

  .sponsor-box dt {
    margin-bottom: 8px;
  }

  .footer-links {
    flex-wrap: wrap;
    justify-content: center;
  }

  .parking-list {
    grid-template-columns: repeat(2, 1fr);
  }

  .parking-list section:nth-child(2n) {
    border-right: 0;
  }
}

@media (max-width: 560px) {
  .header-inner,
  .section-inner,
  .section-inner-narrow,
  .footer-inner {
    width: min(100% - 28px, var(--content));
  }

  .brand {
    width: 122px;
  }

  .hero {
    min-height: 0;
    padding: 0;
  }

  .hero-image {
    width: 100%;
    max-width: 100%;
    margin: 0;
  }

  .entry-badge {
    right: 14px;
    top: 0;
    width: 94px;
  }

  .entry-badge.is-following {
    right: 14px;
  }

  .concept-section {
    padding: 68px 0 54px;
  }

  .section-title-en {
    font-size: 36px;
  }

  .section-title-ja {
    margin-top: 8px;
    font-size: 14px;
  }

  .concept-catchcopy {
    width: 100%;
    margin: 26px auto 14px;
    padding: 0 0 8px;
    font-size: 28px;
    white-space: nowrap;
  }

  .concept-catchcopy small {
    font-size: 18px;
  }

  .concept-lead {
    width: 100%;
    font-size: 14px;
    font-weight: 800;
    line-height: 1.7;
    text-align: left;
  }

  .pc-break {
    display: none;
  }

  .concept-card {
    min-height: 286px;
    padding: 34px 20px 24px;
  }

  .concept-card h2 {
    font-size: 18px;
    line-height: 1.6;
  }

  .concept-card p {
    margin-top: 12px;
    font-size: 14px;
  }

  .card-icon {
    height: 55px;
    margin-bottom: 16px;
  }

  .map-section {
    padding: 56px 0 44px;
  }

  .section-heading-en {
    font-size: 34px;
  }

  .section-heading-ja {
    margin-top: 6px;
    font-size: 14px;
  }

  .map-character {
    top: -20px;
    right: 15%;
    left: auto;
    width: 48px;
  }

  .hall-map {
    width: 100%;
    margin-top: 30px;
  }

  .seminar-section {
    padding: 100px 0 58px;
  }

  .seminar-character {
    top: -45px;
    left: 18px;
    width: 70px;
  }

  .seminar-lead {
    margin-top: 32px;
    font-size: 14px;
    font-weight: 800;
    line-height: 1.8;
  }

  .seminar-title-en {
    font-size: 36px;
  }

  .seminar-title-ja {
    margin-top: 6px;
    font-size: 14px;
  }

  .seminar-schedule {
    margin-top: 44px;
  }

  .seminar-tab {
    min-height: 54px;
    padding: 9px 4px;
    font-size: 18px;
  }

  .seminar-panel {
    padding: 32px 14px 10px;
  }

  .seminar-panel img {
    width: 620px;
    max-width: none;
    min-width: 620px;
  }

  .seminar-reserve-button {
    width: calc(100% - 28px);
    min-height: 66px;
    margin: 20px auto 30px;
    padding: 12px 18px 12px 24px;
    font-size: 14px;
  }

  .seminar-reserve-button img {
    width: 34px;
  }

  .access-section {
    padding: 100px 0 56px;
  }

  .access-copy h2 {
    font-size: 16px;
  }

  .access-copy h3 {
    font-size: 14px;
  }

  .access-copy p {
    font-size: 12px;
  }

  .access-copy strong {
    padding-left: 14px;
    font-size: 14px;
  }

  .access-copy strong::before {
    width: 8px;
    height: 8px;
  }

  .access-character {
    top: -40px;
    left: 18px;
    width: 52px;
  }

  .access-button {
    min-height: 54px;
    padding: 0 48px 0 14px;
    font-size: 13px;
    white-space: nowrap;
  }

  .access-button-icon {
    right: 12px;
    width: 28px;
    height: 28px;
    font-size: 27px;
  }

  .access-more {
    padding: 28px 22px 32px;
  }

  .access-more h2 {
    font-size: 18px;
  }

  .access-more h3 {
    font-size: 14px;
  }

  .access-more p {
    font-size: 12px;
  }

  .parking-list {
    grid-template-columns: 1fr;
  }

  .parking-list section {
    padding: 0 0 18px;
    border-right: 0;
    border-bottom: 1px solid #63afd2;
  }

  .parking-list section:last-child {
    border-bottom: 0;
  }

  .sponsor-box {
    padding: 30px 22px;
    border-radius: 14px;
  }

  .footer-character-left {
    top: -30px;
    left: 16px;
    width: 58px;
  }

  .footer-character-right {
    top: -42px;
    right: 16px;
    width: 92px;
  }

  .sponsor-box dt,
  .sponsor-box dd {
    font-size: 13px;
    line-height: 1.6;
  }

  .support-logos {
    gap: 14px;
  }

  .support-logos img:nth-child(1) {
    width: 230px;
  }

  .support-logos img:nth-child(2) {
    width: 178px;
  }

  .support-logos img:nth-child(3) {
    width: 230px;
  }

  .policy-links {
    justify-content: center;
    gap: 18px;
  }

  .contact-button {
    width: 100%;
    min-width: 0;
    min-height: 58px;
  }
}

.sp-button-line {
  display: inline;
}

@media (max-width: 560px) {
  .seminar-reserve-label {
    display: block;
  }

  .sp-button-line {
    display: block;
    white-space: nowrap;
  }
}