:root {
  --navy: #001c43;
  --green: #009865;
  --green-dark: #007b52;
  --orange: #ff5b1a;
  --container: 1200px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--navy);
  background: #fff;
  font-family: "Noto Sans JP", sans-serif;
  line-height: 1.6;
}

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

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

.container {
  width: min(var(--container), calc(100% - 48px));
  margin-inline: auto;
}

.sr-only {
  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: relative;
  z-index: 20;
  height: 76px;
  background: #fff;
}

.header-inner {
  height: 100%;
  display: flex;
  align-items: center;
  gap: 20px;
}

.logo {
  display: inline-flex;
  align-items: center;
  flex: none;
  width: 142px;
}

.logo img {
  width: 100%;
  height: auto;
}

.global-nav {
  display: flex;
  gap: 18px;
  margin-left: auto;
  font-size: 12px;
  font-weight: 800;
  white-space: nowrap;
}

.global-nav a {
  transition: color .2s;
}

.global-nav a:hover {
  color: var(--green);
}

.header-actions {
  display: flex;
  gap: 8px;
  flex: none;
}

.header-button {
  padding: 8px 13px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 800;
  white-space: nowrap;
}

.header-button--venue {
  color: #fff;
  background: var(--orange);
}

.header-button--online {
  color: var(--green);
  border: 1.5px solid var(--green);
}

.menu-toggle,
.mobile-nav {
  display: none;
}

.hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  background: linear-gradient(135deg, #fff 15%, #f8fff9 65%, #effff6);
}

.hero-decoration {
  position: absolute;
  z-index: -2;
  display: block;
  border-radius: 50%;
}

.hero-decoration--left {
  width: 680px;
  height: 680px;
  left: -360px;
  top: 95px;
  background: linear-gradient(135deg, rgba(168, 239, 201, .8), rgba(239, 255, 233, 0));
}

.hero-decoration--right {
  width: 650px;
  height: 650px;
  right: -270px;
  top: -260px;
  background: linear-gradient(145deg, rgba(255, 244, 168, .7), rgba(181, 241, 208, .75));
}

.hero-inner {
  min-height: 610px;
  display: grid;
  grid-template-columns: 46% 54%;
  align-items: center;
  gap: 10px;
  padding-block: 48px 50px;
}

.hero-copy {
  position: relative;
  z-index: 2;
  padding-left: 58px;
}

.hero-kicker {
  width: fit-content;
  max-width: 100%;
  margin: 0 0 30px;
  color: var(--green-dark);
  font-size: 22px;
  font-weight: 800;
}

.hero-kicker::after {
  content: "";
  display: block;
  width: 100%;
  height: 5px;
  margin: 10px 0 0;
  border-radius: 3px;
  background: linear-gradient(90deg, var(--green) 55%, #d7e800 55%);
}

h1 {
  margin: 0;
}

.hero-product,
.hero-event {
  display: block;
  font-weight: 900;
  line-height: .98;
  letter-spacing: .02em;
}

.hero-product {
  margin-bottom: 10px;
  color: var(--navy);
  font-size: clamp(50px, 5.3vw, 72px);
}

.hero-event {
  color: var(--green);
  font-size: clamp(49px, 5.1vw, 70px);
}

.hero-message {
  margin: 27px 0 24px;
  font-size: 25px;
  font-weight: 900;
  line-height: 1.55;
}

.event-data {
  margin: 0;
}

.event-data>div {
  display: flex;
  align-items: center;
  gap: 13px;
  margin: 7px 0;
}

.event-data dt {
  width: 33px;
  flex: none;
  color: var(--green);
  text-align: center;
}

.event-data dd {
  margin: 0;
  font-size: 20px;
  font-weight: 800;
}

.calendar-icon {
  font-size: 30px;
  line-height: 1;
}

.pin-icon {
  position: relative;
  display: inline-block;
  width: 23px;
  height: 29px;
  border-radius: 50% 50% 50% 0;
  background: var(--green);
  transform: rotate(-45deg);
}

.pin-icon::after {
  content: "";
  position: absolute;
  width: 8px;
  height: 8px;
  left: 8px;
  top: 7px;
  border-radius: 50%;
  background: #fff;
}

.event-data strong {
  color: var(--green);
  font-size: 42px;
  line-height: 1;
}

.event-tags {
  display: flex;
  gap: 14px;
  margin: 18px 0 0;
  padding: 0;
  list-style: none;
}

.event-tags li {
  padding: 6px 17px;
  border: 2px solid var(--green);
  border-radius: 999px;
  color: var(--green-dark);
  background: rgba(255, 255, 255, .9);
  font-size: 14px;
  font-weight: 800;
}

.hero-visual {
  position: relative;
  z-index: 1;
  width: 112%;
  margin-left: -6%;
}

.visual-shape {
  position: absolute;
  z-index: -1;
  inset: 9% 0 5% 8%;
  border-radius: 48% 52% 44% 56%;
  background: linear-gradient(135deg, #ecffba, #b8efd0);
}

.hero-visual img {
  width: 100%;
  height: auto;
  filter: drop-shadow(0 18px 24px rgba(0, 59, 37, .12));
}

.speech {
  position: absolute;
  margin: 0;
  padding: 9px 20px;
  border: 3px solid var(--green);
  border-radius: 999px;
  color: var(--green-dark);
  background: #fff;
  font-size: 16px;
  font-weight: 900;
  white-space: nowrap;
  transform: rotate(4deg);
}

.speech::after {
  content: "";
  position: absolute;
  width: 13px;
  height: 13px;
  left: 35%;
  bottom: -9px;
  border-right: 3px solid var(--green);
  border-bottom: 3px solid var(--green);
  background: #fff;
  transform: rotate(45deg);
}

.speech--top {
  top: 12%;
  right: 3%;
}

.speech--bottom {
  left: 6%;
  bottom: 27%;
  transform: rotate(-4deg);
}

.application {
  padding: 24px 0 22px;
  border-top: 1px solid #e2f2eb;
  border-bottom: 1px solid #dcefe6;
  background: linear-gradient(#fff, #f1fff8);
  text-align: center;
}

.application h2 {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: .4em;
  margin: 0 0 15px;
  color: var(--green-dark);
  font-size: 19px;
  font-weight: 800;
}

.application h2::before,
.application h2::after {
  content: "";
  width: 70px;
  height: 1px;
  margin-inline: 20px;
  background: var(--green);
}

.application-buttons {
  display: flex;
  justify-content: center;
  gap: 28px;
}

.application-button {
  position: relative;
  width: 390px;
  min-height: 62px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 15px;
  border-radius: 999px;
  font-size: 20px;
  font-weight: 800;
  transition: transform .2s, box-shadow .2s;
}

.application-button:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 20px rgba(0, 66, 44, .14);
}

.application-button--venue {
  color: #fff;
  background: linear-gradient(90deg, #ff7023, #ff5414);
  box-shadow: 0 8px 18px rgba(255, 91, 26, .2);
}

.application-button--online {
  color: var(--green);
  border: 2px solid var(--green);
  background: #fff;
}

.button-icon {
  font-size: 23px;
}

.button-copy {
  display: flex;
  flex-direction: column;
  align-items: center;
  line-height: 1.25;
}

.button-copy small {
  margin-top: 2px;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: .03em;
  opacity: .88;
}

.arrow {
  position: absolute;
  right: 24px;
  top: 50%;
  font-size: 30px;
  font-weight: 400;
  line-height: 1;
  transform: translateY(-53%);
}

.application-note {
  margin: 8px 0 0;
  font-size: 11px;
}

.speakers {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  padding: 78px 0 88px;
  background: linear-gradient(135deg, #fff 30%, #f4fff9 100%);
}

.speakers-decoration {
  position: absolute;
  z-index: -1;
  display: block;
  background: linear-gradient(135deg, rgba(188, 246, 214, .72), rgba(235, 255, 219, .18));
  transform: rotate(-28deg);
}

.speakers-decoration--left {
  width: 220px;
  height: 520px;
  left: -155px;
  top: 20px;
  border-radius: 70% 30% 65% 35%;
}

.speakers-decoration--right {
  width: 250px;
  height: 550px;
  right: -175px;
  top: -35px;
  border-radius: 35% 65% 30% 70%;
}

.speakers-heading {
  position: relative;
  margin-bottom: 34px;
}

.section-label {
  margin: 0 0 2px;
  color: var(--green);
  font-size: 11px;
  font-weight: 900;
  letter-spacing: .14em;
}

.speakers-heading h2 {
  margin: 0;
  font-size: 32px;
  line-height: 1.35;
}

.speakers-lead {
  margin: 9px 0 0;
  color: #124e9b;
  font-size: 17px;
  font-weight: 800;
}

.speakers-note {
  position: absolute;
  right: 0;
  bottom: 0;
  margin: 0;
  color: #66758b;
  font-size: 11px;
}

.speaker-list {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 16px;
}

.speaker-card {
  position: relative;
  overflow: hidden;
  border: 1px solid #d4ece2;
  border-radius: 8px;
  background: #fff;
  box-shadow: 0 8px 22px rgba(0, 78, 51, .08);
}

.speaker-card::before {
  content: "";
  position: absolute;
  z-index: 2;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--green) 56%, #cbe300 56%);
}

.speaker-photo {
  aspect-ratio: 1 / 1;
  overflow: hidden;
  background: #eef2f0;
}

.speaker-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center top;
}

.speaker-profile {
  min-height: 150px;
  padding: 15px 12px 17px;
  text-align: center;
}

.speaker-profile p {
  margin: 0;
}

.speaker-company {
  color: #273b5c;
  font-size: 12px;
  font-weight: 800;
}

.speaker-role {
  min-height: 44px;
  margin-top: 5px !important;
  color: #273b5c;
  font-size: 11px;
  font-weight: 700;
  line-height: 1.55;
}

.speaker-profile h3 {
  margin: 8px 0 0;
  color: var(--navy);
  font-size: 19px;
  line-height: 1.35;
}

.speaker-profile h3 span {
  font-size: .7em;
}

.speaker-card--confirmed {
  border-color: #9bd9bf;
  box-shadow: 0 9px 25px rgba(0, 111, 73, .13);
}

.speaker-card--temporary::after {
  content: "仮";
  position: absolute;
  top: 12px;
  right: 9px;
  z-index: 3;
  display: grid;
  place-items: center;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  color: #fff;
  background: rgba(0, 28, 67, .62);
  font-size: 10px;
  font-weight: 800;
}

.about-event {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  padding: 88px 0;
  background:
    url("../assets/img_haikei_about.png") left center / auto 115% no-repeat,
    linear-gradient(135deg, #fbfffd, #edfff6);
}

.about-decoration {
  position: absolute;
  z-index: -1;
  display: block;
  border-radius: 55% 45% 65% 35%;
  background: linear-gradient(135deg, rgba(186, 244, 211, .65), rgba(255, 249, 177, .25));
  transform: rotate(24deg);
}

.about-decoration--left {
  width: 270px;
  height: 480px;
  left: -210px;
  top: -100px;
}

.about-decoration--right {
  width: 340px;
  height: 430px;
  right: -220px;
  bottom: -180px;
}

.about-event-inner {
  display: grid;
  grid-template-columns: .92fr 1.08fr;
  gap: 62px;
  align-items: center;
}

.about-copy h2,
.benefits-heading h2 {
  margin: 0;
  font-size: 32px;
  line-height: 1.4;
}

.about-copy>h3 {
  margin: 24px 0 17px;
  color: var(--green);
  font-size: 28px;
  line-height: 1.5;
}

.about-description {
  margin: 0;
  font-size: 16px;
  line-height: 2;
}

.about-online {
  position: relative;
  isolation: isolate;
  min-height: 420px;
  overflow: hidden;
  padding: 48px 52px 28px;
  border-radius: 165px 20px 20px 165px;
  background:
    radial-gradient(circle at 78% 16%, rgba(177, 241, 182, .72) 0 64px, transparent 65px),
    linear-gradient(152deg, rgba(255, 255, 255, .65) 0 43%, transparent 43%),
    linear-gradient(135deg, #effff5 0%, #dcfaec 57%, #f3fff8 100%);
  box-shadow: inset 0 0 45px rgba(255, 255, 255, .75);
}

.about-online h3 {
  position: relative;
  z-index: 2;
  margin: 0;
  font-size: clamp(30px, calc(3vw - 2px), 43px);
  font-weight: 900;
  line-height: 1.45;
  letter-spacing: -.04em;
  text-shadow: 0 2px 0 rgba(255, 255, 255, .75);
}

.about-offline {
  color: #049c31;
}

.about-digital {
  color: #00a0a5;
}

.about-online img {
  position: absolute;
  z-index: 1;
  right: -2%;
  bottom: -1%;
  width: 88%;
  height: auto;
  mix-blend-mode: normal;
}

.benefits {
  padding: 88px 0 96px;
  background: #fbfffd;
}

.benefits-heading {
  margin-bottom: 35px;
}

.benefit-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.benefit-card {
  overflow: hidden;
  border: 1px solid #e1eee8;
  border-radius: 10px;
  background: #fff;
  box-shadow: 0 8px 24px rgba(0, 65, 42, .06);
}

.benefit-image {
  height: 190px;
  overflow: hidden;
  background: #fff;
}

.benefit-image img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: contain;
  object-position: center;
}

.benefit-body {
  padding: 20px 22px 24px;
}

.benefit-body h3 {
  min-height: calc(2 * 1.55em);
  margin: 0 0 12px;
  font-size: 19px;
  line-height: 1.55;
  text-align: center;
}

.benefit-body p {
  margin: 0;
  color: #35445b;
  font-size: 14px;
  line-height: 1.85;
}

.benefit-card--blue h3 {
  color: #0069b6;
}

.benefit-card--green h3 {
  color: var(--green-dark);
}

.benefit-card--orange h3 {
  color: #f05a2a;
}

.timetable {
  padding: 90px 0 96px;
  background:
    radial-gradient(circle at 12% 16%, rgba(208, 250, 227, .55), transparent 25%),
    linear-gradient(135deg, #f8fffb, #effcf6);
}

.timetable-heading {
  margin-bottom: 34px;
}

.timetable-heading h2 {
  margin: 0;
  font-size: 34px;
  line-height: 1.4;
}

.timeline {
  position: relative;
}

.timeline::before {
  content: "";
  position: absolute;
  left: 173px;
  top: 25px;
  bottom: 27px;
  width: 2px;
  background: #10ae75;
}

.timeline-row {
  position: relative;
  display: grid;
  grid-template-columns: 145px 1fr;
  gap: 55px;
  margin-bottom: 18px;
}

.timeline-row time {
  padding-top: 18px;
  color: var(--green);
  font-size: 16px;
  font-weight: 900;
  text-align: right;
}

.timeline-dot {
  position: absolute;
  z-index: 2;
  left: 164px;
  top: 20px;
  width: 20px;
  height: 20px;
  border: 3px solid #eafff4;
  border-radius: 50%;
  background: #0eac74;
}

.timeline-card {
  min-width: 0;
  padding: 20px 24px 23px;
  border: 1px solid #cfeadf;
  border-radius: 11px;
  background: rgba(255, 255, 255, .9);
  box-shadow: 0 7px 20px rgba(0, 87, 57, .07);
}

.timeline-category {
  margin: 0 0 8px;
  color: var(--green);
  font-size: 14px;
  font-weight: 900;
}

.talk-title {
  margin: 0 0 18px;
  padding: 8px 13px;
  border-radius: 5px;
  background: linear-gradient(90deg, #d9f7e9, #effcf5);
  font-size: 22px;
  line-height: 1.35;
}

.timeline-speakers {
  display: flex;
  /* flex-wrap: wrap; */
  gap: 24px 52px;
}

.timeline-speaker {
  min-width: 300px;
  display: flex;
  align-items: center;
  gap: 18px;
}

.timeline-speaker img,
.speaker-placeholder {
  width: 84px;
  height: 84px;
  flex: none;
  border: 3px solid #fff;
  border-radius: 50%;
  object-fit: cover;
  object-position: center top;
  box-shadow: 0 3px 13px rgba(0, 50, 32, .12);
}

.speaker-placeholder {
  position: relative;
  display: block;
  overflow: hidden;
  background: linear-gradient(#e8eceb, #c9cecd);
}

.speaker-placeholder::before,
.speaker-placeholder::after {
  content: "";
  position: absolute;
  left: 50%;
  border-radius: 50%;
  background: #a8aeac;
  transform: translateX(-50%);
}

.speaker-placeholder::before {
  top: 17px;
  width: 25px;
  height: 25px;
}

.speaker-placeholder::after {
  top: 45px;
  width: 52px;
  height: 44px;
}

.timeline-speaker h4 {
  margin: 5px 0 0;
  font-size: 18px;
  line-height: 1.35;
}

.timeline-speaker h4 span {
  font-size: .72em;
}

.timeline-speakers--two {
  padding-top: 1.5em;
}

.timeline-card--summary {
  min-height: 68px;
  display: grid;
  grid-template-columns: 245px 1fr;
  align-items: center;
  padding-block: 12px;
}

.timeline-card--summary h3 {
  margin: 0;
  padding-right: 25px;
  border-right: 1px solid #dce9e3;
  font-size: 17px;
}

.timeline-card--summary p {
  margin: 0;
  padding-left: 28px;
  color: #26364d;
  font-size: 15px;
  font-weight: 500;
}

.timeline-speaker p,
.timeline-speakers--two p {
  margin: 0;
  color: #273b5c;
  font-size: 13px;
  font-weight: 700;
  padding-left: 0;
}

.timetable-actions {
  display: flex;
  justify-content: center;
  gap: 28px;
  margin-top: 36px;
}

.timetable-note {
  text-align: center;
}

.recommended {
  padding: 78px 0 82px;
  background: #fff;
}

.recommended h2,
.outline h2,
.access h2,
.faq h2 {
  margin: 0 0 26px;
  font-size: 32px;
  line-height: 1.4;
}

.recommended-list {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 14px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.recommended-list li {
  min-height: 110px;
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 18px;
  border: 1px solid #d8ece3;
  border-radius: 8px;
  background: #fbfffd;
  box-shadow: 0 5px 14px rgba(0, 80, 52, .04);
}

.recommended-list p {
  margin: 0;
  font-size: 14px;
  font-weight: 800;
  line-height: 1.65;
}

.check-icon {
  width: 34px;
  height: 34px;
  flex: none;
  display: grid;
  place-items: center;
  border-radius: 50%;
  color: #fff;
  background: var(--green);
  font-size: 20px;
  font-weight: 900;
}

.event-information {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  padding: 82px 0 88px;
  background: linear-gradient(135deg, #fafffc, #effcf6);
}

.information-decoration {
  position: absolute;
  z-index: -1;
  width: 280px;
  height: 580px;
  border-radius: 50%;
  background: linear-gradient(135deg, rgba(196, 245, 218, .65), rgba(239, 255, 220, .15));
  transform: rotate(-28deg);
}

.information-decoration--left {
  left: -215px;
  top: -70px;
}

.information-decoration--right {
  right: -215px;
  bottom: -120px;
}

.information-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 34px;
  align-items: start;
}

.outline,
.access {
  min-width: 0;
}

.outline-list {
  overflow: hidden;
  margin: 0;
  border: 1px solid #d5e9e0;
  border-radius: 9px;
  background: rgba(255, 255, 255, .9);
}

.outline-list>div {
  display: grid;
  grid-template-columns: 155px 1fr;
  border-bottom: 1px solid #dce9e3;
}

.outline-list>div:last-child {
  border-bottom: 0;
}

.outline-list dt,
.outline-list dd {
  margin: 0;
  padding: 11px 14px;
  font-size: 14px;
}

.outline-list dt {
  display: flex;
  align-items: center;
  gap: 11px;
  color: var(--green);
  background: #f0faf5;
  font-size: 17px;
  font-weight: 900;
}

.outline-list dt span {
  color: var(--navy);
  font-size: 13px;
}

.outline-list dd {
  line-height: 1.65;
}

.outline-list small {
  color: #526278;
  font-size: 14px;
}

.access-card {
  display: grid;
  grid-template-columns: 38% 62%;
  overflow: hidden;
  border: 1px solid #d5e9e0;
  border-radius: 9px;
  background: #fff;
}

.access-copy {
  padding: 27px 23px;
  align-self: center;
}

.access-copy h3 {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  margin: 0 0 13px;
  font-size: 16px;
  line-height: 1.55;
}

.access-copy h3:nth-of-type(2) {
  margin-top: 38px;
}

.access-copy h3 span {
  color: var(--green);
  font-size: 25px;
  line-height: 1;
}

.access-copy p {
  margin: 0;
  font-size: 13px;
  line-height: 1.85;
}

.access-card>img {
  width: 100%;
  height: auto;
  align-self: center;
  object-fit: contain;
  background: #f4f7f5;
}

.faq {
  padding: 78px 0 86px;
  background: #fbfffd;
}

.faq-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px 22px;
}

.faq-list details {
  overflow: hidden;
  border: 1px solid #d6e9e0;
  border-radius: 8px;
  background: #fff;
}

.faq-list summary {
  position: relative;
  min-height: 52px;
  display: flex;
  align-items: center;
  gap: 13px;
  padding: 10px 48px 10px 14px;
  cursor: pointer;
  list-style: none;
  font-size: 14px;
  font-weight: 800;
}

.faq-list summary::-webkit-details-marker {
  display: none;
}

.faq-list summary>span {
  width: 29px;
  height: 29px;
  flex: none;
  display: grid;
  place-items: center;
  border-radius: 50%;
  color: #fff;
  background: var(--green);
}

.faq-list summary::after {
  content: "+";
  position: absolute;
  right: 17px;
  color: var(--green);
  font-size: 27px;
  line-height: 1;
}

.faq-list details[open] summary::after {
  content: "−";
}

.faq-list details p {
  margin: 0;
  padding: 0 18px 17px 56px;
  color: #4d5c70;
  font-size: 14px;
  line-height: 1.8;
}

.closing-application {
  padding: 46px 0 42px;
  background: linear-gradient(90deg, #effff6, #fff, #effff6);
  text-align: center;
}

.site-footer {
  padding: 30px 0;
  color: #fff;
  background: var(--green);
}

.footer-inner {
  display: flex;
  align-items: center;
  gap: 24px;
}

.footer-logo {
  width: 145px;
  padding: 8px 12px;
  border-radius: 3px;
  background: #fff;
}

.footer-logo img {
  width: 100%;
  height: auto;
}

.footer-nav {
  display: flex;
  gap: 22px;
  margin-left: auto;
  font-size: 11px;
  font-weight: 800;
}

.site-footer small {
  margin-left: auto;
  font-size: 10px;
}

.back-to-top {
  position: fixed;
  z-index: 30;
  right: 24px;
  bottom: 24px;
  width: 58px;
  height: 58px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  border: 2px solid #fff;
  border-radius: 50%;
  color: #fff;
  background: rgba(0, 137, 91, .94);
  box-shadow: 0 6px 18px rgba(0, 54, 35, .25);
  opacity: 0;
  visibility: hidden;
  transform: translateY(14px);
  transition: opacity .2s, visibility .2s, transform .2s, background .2s;
}

.back-to-top.is-visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top:hover {
  background: #006f4a;
}

.back-to-top span {
  font-size: 19px;
  line-height: 1;
}

.back-to-top small {
  margin-top: 2px;
  font-size: 9px;
  font-weight: 800;
}

@media (max-width: 1100px) {
  .global-nav {
    display: none;
  }

  .hero-inner {
    min-height: 530px;
    grid-template-columns: 48% 52%;
  }

  .hero-copy {
    padding-left: 20px;
  }

  .hero-kicker {
    font-size: 17px;
  }

  .hero-message {
    font-size: 19px;
  }

  .event-data dd {
    font-size: 16px;
  }

  .event-data strong {
    font-size: 32px;
  }

  .speech {
    padding: 7px 13px;
    font-size: 12px;
  }

  .speaker-list {
    grid-template-columns: repeat(3, 1fr);
  }

  .about-event-inner {
    gap: 38px;
  }

  .about-online {
    min-height: 360px;
    padding: 38px;
  }

  .about-online h3 {
    font-size: 32px;
  }

  .recommended-list {
    grid-template-columns: repeat(3, 1fr);
  }

  .footer-nav {
    display: none;
  }
}

@media (max-width: 760px) {
  .container {
    width: min(100% - 28px, var(--container));
  }

  .site-header {
    height: auto;
  }

  .header-inner {
    min-height: 60px;
    flex-wrap: wrap;
    gap: 8px 12px;
    padding-block: 9px;
  }

  .logo {
    width: 118px;
  }

  .header-actions {
    order: 3;
    width: 100%;
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 8px;
  }

  .header-button {
    min-height: 40px;
    padding: 7px 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 11px;
  }

  .menu-toggle {
    width: 44px;
    height: 44px;
    margin-left: auto;
    padding: 10px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    border: 0;
    border-radius: 8px;
    color: var(--green-dark);
    background: #effaf5;
    cursor: pointer;
  }

  .menu-toggle span {
    width: 100%;
    height: 2px;
    display: block;
    border-radius: 2px;
    background: currentColor;
    transition: transform .2s, opacity .2s;
  }

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

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

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

  .mobile-nav {
    position: absolute;
    z-index: 30;
    top: 100%;
    right: 0;
    left: 0;
    padding: 10px 14px 16px;
    display: grid;
    background: #fff;
    border-top: 1px solid #e1eee8;
    box-shadow: 0 16px 28px rgba(0, 65, 42, .14);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    pointer-events: none;
    transition: opacity .2s, visibility .2s, transform .2s;
  }

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

  .mobile-nav a {
    padding: 13px 10px;
    color: var(--navy);
    border-bottom: 1px solid #e8f1ed;
    font-size: 14px;
    font-weight: 800;
  }

  .mobile-nav a:last-child {
    border-bottom: 0;
  }

  .hero-inner {
    min-height: 0;
    grid-template-columns: 1fr;
    padding-block: 38px 25px;
  }

  .hero-copy {
    padding-left: 0;
  }

  .hero-kicker {
    margin-inline: auto;
    margin-bottom: 20px;
    text-align: center;
  }

  .hero-kicker::after {
    margin-inline: auto;
  }

  .hero-product {
    font-size: clamp(46px, 15vw, 64px);
    text-align: center;
  }

  .hero-event {
    font-size: clamp(43px, 13.7vw, 60px);
    text-align: center;
  }

  .hero-message {
    font-size: 18px;
    text-align: center;
  }

  .event-data {
    max-width: 430px;
    margin-inline: auto;
  }

  .event-data dd {
    font-size: 14px;
  }

  .event-data strong {
    font-size: 30px;
  }

  .event-tags {
    justify-content: center;
    flex-wrap: wrap;
  }

  .event-tags li {
    padding: 5px 11px;
    font-size: 11px;
  }

  .hero-visual {
    width: 110%;
    margin: 12px 0 0 -5%;
  }

  .speech--top {
    right: 0;
  }

  .speech--bottom {
    left: 3%;
  }

  .application {
    padding-block: 20px;
  }

  .application h2 {
    display: block;
    font-size: 15px;
  }

  .application h2 span {
    display: block;
  }

  .application h2::before,
  .application h2::after {
    display: none;
  }

  .application-buttons {
    flex-direction: column;
    gap: 12px;
  }

  .application-button {
    width: 100%;
    min-height: 54px;
    font-size: 16px;
  }

  .speakers {
    padding: 58px 0 66px;
  }

  .speakers-heading h2 {
    font-size: 27px;
  }

  .speakers-lead {
    padding-right: 0;
    font-size: 14px;
  }

  .speakers-note {
    position: static;
    margin-top: 8px;
  }

  .speaker-list {
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
  }

  .speaker-profile {
    min-height: 142px;
    padding-inline: 9px;
  }

  .speaker-profile h3 {
    font-size: 17px;
  }

  .about-event,
  .benefits {
    padding: 62px 0 70px;
  }

  .about-event-inner {
    grid-template-columns: 1fr;
    gap: 34px;
  }

  .about-copy h2,
  .benefits-heading h2 {
    font-size: 25px;
  }

  .about-copy>h3 {
    font-size: 22px;
  }

  .about-online {
    min-height: 340px;
    border-radius: 105px 20px 20px 105px;
  }

  .benefit-list {
    grid-template-columns: 1fr;
    gap: 18px;
  }

  .benefit-card {
    display: block;
  }

  .benefit-image {
    width: 100%;
    height: auto;
    min-height: 0;
    aspect-ratio: 370 / 190;
  }

  .benefit-body {
    padding: 18px;
  }

  .timetable {
    padding: 64px 0 72px;
  }

  .timetable-heading h2 {
    font-size: 27px;
  }

  .timeline::before {
    left: 10px;
  }

  .timeline-row {
    grid-template-columns: 1fr;
    gap: 6px;
    padding-left: 34px;
  }

  .timeline-row time {
    padding-top: 0;
    text-align: left;
  }

  .timeline-dot {
    left: 1px;
    top: 4px;
  }

  .timeline-card {
    padding: 17px;
  }

  .timeline-speakers--two {
    flex-direction: column;
    gap: 18px;
  }

  .timeline-speaker {
    min-width: 0;
  }

  .timeline-card--summary {
    display: block;
    min-height: 0;
  }

  .timeline-card--summary h3 {
    padding: 0;
    border-right: 0;
  }

  .timeline-card--summary p {
    padding: 6px 0 0;
  }

  .timetable-actions {
    flex-direction: column;
    gap: 12px;
  }

  .recommended {
    padding: 60px 0 65px;
  }

  .recommended h2,
  .outline h2,
  .access h2,
  .faq h2 {
    font-size: 25px;
  }

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

  .information-grid {
    grid-template-columns: 1fr;
    gap: 55px;
  }

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

  .footer-inner {
    flex-wrap: wrap;
    justify-content: space-between;
  }

  .site-footer small {
    margin-left: 0;
  }

  .back-to-top {
    right: 14px;
    bottom: 14px;
    width: 52px;
    height: 52px;
  }
}

@media (max-width: 420px) {
  .hero-product {
    font-size: 46px;
  }

  .hero-event {
    font-size: 42px;
  }

  .header-button {
    font-size: 10px;
  }

  .speech {
    font-size: 10px;
  }

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

  .speaker-card {
    display: grid;
    grid-template-columns: 44% 56%;
  }

  .speaker-photo {
    aspect-ratio: 1 / 1.05;
  }

  .speaker-profile {
    min-height: 0;
    display: flex;
    flex-direction: column;
    justify-content: center;
    text-align: left;
  }

  .speaker-role {
    min-height: 0;
  }

  .about-online {
    min-height: 300px;
    padding: 30px 25px;
    border-radius: 72px 16px 16px 72px;
  }

  .about-online h3 {
    font-size: 28px;
  }

  .benefit-card {
    grid-template-columns: 1fr;
  }

  .benefit-image {
    height: 180px;
    min-height: 0;
  }

  .timeline-speaker {
    align-items: flex-start;
  }

  .timeline-speaker img,
  .speaker-placeholder {
    width: 72px;
    height: 72px;
  }

  .talk-title {
    font-size: 18px;
  }

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

  .recommended-list li {
    min-height: 82px;
  }

  .outline-list>div {
    grid-template-columns: 120px 1fr;
  }

  .outline-list dt {
    padding-inline: 10px;
  }

  .outline-list dd {
    padding-inline: 10px;
  }

  .access-card {
    grid-template-columns: 1fr;
  }

  .access-card>img {
    max-height: 300px;
  }
}

/* 登壇者の発表前は、社名と提供済みのロゴだけを掲載する。 */
.company-list {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 20px;
}

.company-card {
  position: relative;
  display: flex;
  flex-direction: column;
  flex: 0 1 calc((100% - 40px) / 3);
  min-width: 0;
  min-height: 170px;
  padding: 16px 24px 18px;
  border: 1px solid #d4ece2;
  border-radius: 12px;
  background: #fff;
  box-shadow: 0 8px 22px rgba(0, 78, 51, .08);
  text-align: center;
}

.company-card::before {
  content: "";
  position: absolute;
  inset: 0 0 auto;
  height: 4px;
  border-radius: 12px 12px 0 0;
  background: linear-gradient(90deg, var(--green) 56%, #cbe300 56%);
}

.company-card__content {
  display: flex;
  flex: 1;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  width: 100%;
  min-width: 0;
}

.company-card__category {
  align-self: flex-start;
  margin: 0 0 4px;
  padding: 4px 14px;
  border-radius: 999px;
  color: #08764f;
  background: #e8f8f0;
  font-size: 12px;
  font-weight: 800;
  line-height: 1.5;
}

.company-card__logo {
  display: block;
  width: min(100%, 270px);
  height: 90px;
  margin: 0 auto;
  object-fit: contain;
}

.company-card__name {
  margin: 0;
  color: var(--navy);
  font-size: clamp(16px, 1.5vw, 20px);
  font-weight: 800;
  line-height: 1.55;
  overflow-wrap: anywhere;
}

.company-updates {
  width: fit-content;
  max-width: 100%;
  margin: 24px auto 0;
  padding: 12px 22px;
  border: 1px solid #bce8d3;
  border-radius: 999px;
  color: #08764f;
  background: #fff;
  font-size: 14px;
  font-weight: 800;
  text-align: center;
}

.timetable-change-note {
  margin: 16px 0 0 200px;
  color: #546477;
  font-size: 13px;
  line-height: 1.6;
}

.timetable .application-buttons { margin-top: 64px; }

@media (max-width: 760px) {
  .company-list { gap: 12px; }
  .company-card { flex-basis: calc((100% - 12px) / 2); min-height: 170px; padding: 16px 14px; }
  .company-card__logo { height: 76px; }
  .company-card__name { font-size: 16px; }
  .timetable-change-note { margin-left: 34px; }
  .timetable .application-buttons { margin-top: 48px; }
}

@media (max-width: 520px) {
  .company-card { flex-basis: 100%; min-height: 170px; }
  .company-card__logo { height: 90px; }
  .company-updates { border-radius: 12px; }
}

/* メインビジュアルの受付時刻を読みやすくし、日時の間隔を調整 */
.event-date-line { gap: 4px; }
.event-date-line .event-start { margin-left: -2px; }
.event-date-line .event-reception { font-size: 12px; }

@media (max-width: 760px) {
  .event-date-line { gap: 3px; }
  .event-date-line .event-start { margin-left: -1px; }
  .event-date-line .event-reception { font-size: 10px; }
}

/* 会場公式サイトへのアクセス案内 */
.access-official {
  grid-column: 1 / -1;
  margin: 0;
  padding: 6px 16px;
  border-top: 1px solid #d5e9e0;
  text-align: center;
}

.access-official a {
  display: inline-block;
  padding: 10px 0;
  color: var(--green-dark);
  font-size: 14px;
  font-weight: 700;
  line-height: 1.6;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.access-official a:hover { color: var(--navy); }
.access-official a:focus-visible {
  outline: 2px solid var(--green);
  outline-offset: 3px;
}

/* 狭い3列表示でも本文の開始位置を揃える */
@media (min-width: 761px) and (max-width: 1100px) {
  .benefit-body { padding-inline: 14px; }
  .benefit-body h3 { font-size: 16px; min-height: calc(3 * 1.55em); }
}

@media (max-width: 760px) {
  .benefit-body h3 { font-size: 18px; min-height: 0; }
}