:root {
  --navy-950: #05264f;
  --navy-900: #073a73;
  --navy-800: #0a4a86;
  --cyan-500: #14c8d2;
  --cyan-300: #8feef2;
  --sky-100: #eaf9fb;
  --ink: #182333;
  --muted: #5f7085;
  --line: #dce6ee;
  --paper: #ffffff;
  --soft: #f4f8fb;
  --sun: #f2b84b;
  --danger: #c62828;
  --shadow: 0 18px 48px rgba(5, 38, 79, 0.16);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.6;
}

a {
  color: inherit;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 72px;
  padding: 12px clamp(20px, 5vw, 72px);
  color: white;
  background: rgba(5, 38, 79, 0.92);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: white;
  text-decoration: none;
  font-weight: 760;
  letter-spacing: 0.08em;
}

.brand img {
  width: 42px;
  height: 42px;
}

nav {
  display: flex;
  align-items: center;
  gap: clamp(14px, 2.6vw, 34px);
  font-size: 0.92rem;
  font-weight: 650;
}

nav a {
  color: rgba(255, 255, 255, 0.82);
  text-decoration: none;
}

nav a:hover,
nav a:focus-visible {
  color: white;
}

.hero {
  position: relative;
  min-height: min(590px, calc(100vh - 120px));
  overflow: hidden;
  color: white;
  background:
    radial-gradient(circle at 72% 36%, rgba(20, 200, 210, 0.22), transparent 30%),
    linear-gradient(140deg, var(--navy-950) 0%, var(--navy-900) 48%, #0b558d 100%);
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  opacity: 0.16;
  background-image:
    linear-gradient(rgba(255,255,255,0.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.08) 1px, transparent 1px);
  background-size: 52px 52px;
  mask-image: linear-gradient(to bottom, black 0%, transparent 84%);
}

.hero-art {
  position: absolute;
  inset: auto 0 0;
  height: 46%;
  opacity: 0.96;
}

.hero-art svg {
  width: 100%;
  height: 100%;
  display: block;
}

.ridge-back {
  fill: rgba(143, 238, 242, 0.18);
}

.ridge-mid {
  fill: rgba(20, 200, 210, 0.2);
}

.ridge-front {
  fill: rgba(5, 38, 79, 0.72);
}

.hero-inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(160px, 270px) minmax(0, 860px);
  align-items: center;
  gap: clamp(28px, 6vw, 88px);
  width: min(1180px, calc(100% - 40px));
  min-height: min(460px, calc(100vh - 196px));
  margin: 0 auto;
  padding: 56px 0;
}

.hero-mark {
  position: relative;
  aspect-ratio: 1;
  display: grid;
  place-items: center;
}

.hero-mark::before,
.hero-mark::after {
  content: "";
  position: absolute;
  border: 1px solid rgba(143, 238, 242, 0.22);
  border-radius: 50%;
}

.hero-mark::before {
  inset: 2%;
}

.hero-mark::after {
  inset: 13%;
  border-style: dashed;
  opacity: 0.42;
}

.hero-mark img {
  position: relative;
  width: 86%;
  filter: drop-shadow(0 24px 32px rgba(0, 0, 0, 0.22));
}

.hero-copy {
  max-width: 780px;
}

.eyebrow,
.section-kicker {
  margin: 0 0 14px;
  color: var(--cyan-300);
  font-size: clamp(0.78rem, 1.2vw, 0.92rem);
  font-weight: 780;
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  overflow-wrap: anywhere;
}

h1 {
  margin: 0;
  font-size: clamp(4.2rem, 8.8vw, 7.35rem);
  line-height: 0.9;
  letter-spacing: 0;
  font-weight: 850;
  white-space: nowrap;
}

.subtitle {
  max-width: none;
  margin: 26px 0 0;
  font-size: clamp(1.3rem, 2.35vw, 2.14rem);
  line-height: 1.13;
  font-weight: 760;
  white-space: nowrap;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 36px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  gap: 10px;
  padding: 12px 18px;
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: 8px;
  font-weight: 760;
  text-decoration: none;
}

.button svg {
  width: 20px;
  height: 20px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.9;
  stroke-linecap: round;
  stroke-linejoin: round;
  flex: 0 0 auto;
}

.primary {
  color: var(--navy-950);
  background: white;
  box-shadow: var(--shadow);
}

.secondary {
  color: white;
  background: rgba(255, 255, 255, 0.08);
}

.quick-info {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
}

.info-item {
  min-height: 128px;
  padding: 28px clamp(20px, 4vw, 52px);
  background: white;
}

.info-label {
  display: block;
  margin-bottom: 8px;
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.info-item strong,
.contact-row strong {
  display: block;
  color: var(--navy-950);
  font-size: clamp(1.02rem, 1.5vw, 1.24rem);
  line-height: 1.32;
}

.section {
  width: min(1120px, calc(100% - 40px));
  margin: 0 auto;
  padding: clamp(72px, 10vw, 120px) 0;
}

.section.band {
  width: 100%;
  padding-inline: max(20px, calc((100% - 1120px) / 2));
  background: var(--soft);
}

.notice-section {
  width: 100%;
  padding-inline: max(20px, calc((100% - 1120px) / 2));
  background: var(--sky-100);
}

.section-heading {
  max-width: 760px;
  margin-bottom: 34px;
}

.section-heading h2,
.schedule h3,
.split h3,
.card h3 {
  margin: 0;
  color: var(--navy-950);
  line-height: 1.08;
}

.section-heading h2 {
  font-size: clamp(2rem, 4vw, 3.6rem);
  font-weight: 850;
}

.band .section-kicker {
  color: var(--navy-800);
}

.notice-section .section-kicker {
  color: var(--navy-800);
}

.notice-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.notice-card {
  padding: 24px;
  border: 1px solid rgba(10, 74, 134, 0.14);
  border-radius: 8px;
  background: white;
  box-shadow: 0 14px 34px rgba(5, 38, 79, 0.08);
}

.notice-number {
  display: inline-grid;
  place-items: center;
  min-width: 44px;
  height: 30px;
  margin-bottom: 18px;
  padding: 0 10px;
  border-radius: 999px;
  color: var(--navy-950);
  background: var(--sky-100);
  font-size: 0.74rem;
  font-weight: 850;
}

.notice-card h3 {
  margin: 0 0 12px;
  color: var(--navy-950);
  font-size: clamp(1.12rem, 1.8vw, 1.38rem);
  line-height: 1.18;
}

.notice-card p {
  margin: 0;
  color: var(--muted);
}

.notice-card p + p,
.notice-card p + .notice-list,
.notice-list + p {
  margin-top: 10px;
}

.notice-list {
  display: grid;
  gap: 8px;
  margin: 0;
  padding: 0;
  color: var(--ink);
  list-style: none;
}

.notice-list li {
  position: relative;
  padding-left: 22px;
}

.notice-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.66em;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--cyan-500);
}

.schedule-list li,
.hot-spring-list li {
  display: grid;
  grid-template-columns: 88px minmax(0, 1fr);
  gap: 12px;
}

.hot-spring-list li {
  grid-template-columns: 110px minmax(0, 1fr);
}

.notice-list span {
  color: var(--navy-950);
  font-weight: 780;
}

.notice-list a {
  color: var(--navy-800);
  font-weight: 720;
  text-decoration-color: var(--cyan-500);
  text-underline-offset: 4px;
}

#overview .section-heading {
  max-width: 1120px;
}

#overview .section-heading h2 {
  max-width: 1040px;
}

.text-grid,
.split,
.cards,
.contact-row {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(24px, 5vw, 72px);
}

.text-grid p,
.lead,
.previous-panel p {
  margin: 0;
  color: var(--muted);
  font-size: clamp(1.04rem, 1.5vw, 1.22rem);
}

#overview .text-grid {
  grid-template-columns: minmax(0, 1fr);
  max-width: 1040px;
}

#overview .text-grid p {
  max-width: 980px;
}

.outline-list {
  display: grid;
  gap: 16px;
  margin: 34px 0 0;
  padding: 0;
  list-style: none;
  max-width: 1040px;
}

.outline-list li {
  position: relative;
  padding-left: 28px;
  color: var(--muted);
  font-size: clamp(1rem, 1.35vw, 1.12rem);
}

.outline-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.62em;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--cyan-500);
}

.outline-list strong {
  color: var(--navy-950);
  font-weight: 800;
}

.detail-list {
  display: grid;
  gap: 14px;
  margin: 0;
}

.registration-details {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.detail-list div {
  padding: 18px 20px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: white;
}

.detail-list dt {
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.detail-list dd {
  margin: 4px 0 0;
  color: var(--navy-950);
  font-weight: 780;
}

.detail-list .text-danger {
  color: var(--danger);
}

.check-list {
  display: grid;
  gap: 12px;
  margin: 18px 0 0;
  padding: 0;
  list-style: none;
}

.check-list li {
  position: relative;
  padding-left: 30px;
  color: var(--ink);
  font-weight: 650;
}

.check-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.44em;
  width: 13px;
  height: 13px;
  border-radius: 50%;
  background: var(--cyan-500);
  box-shadow: 0 0 0 5px rgba(20, 200, 210, 0.14);
}

.cards {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

#program .cards {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.card {
  min-height: 220px;
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: white;
  box-shadow: 0 14px 34px rgba(5, 38, 79, 0.08);
}

.card.muted {
  background: var(--soft);
}

.program-schedule {
  margin-top: 24px;
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--soft);
}

.program-schedule h3 {
  margin: 0;
  color: var(--navy-950);
  font-size: clamp(1.35rem, 2vw, 1.8rem);
  line-height: 1.12;
}

.program-schedule p {
  max-width: 720px;
  margin: 12px 0 0;
  color: var(--muted);
}

.program-schedule h4 {
  margin: 28px 0 0;
  color: var(--navy-800);
  font-size: 1rem;
  font-weight: 850;
}

.schedule-table-wrap {
  margin-top: 12px;
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: white;
}

.schedule-table {
  width: 100%;
  min-width: 980px;
  border-collapse: collapse;
  color: var(--navy-950);
  font-size: 0.9rem;
  line-height: 1.45;
}

.schedule-table th,
.schedule-table td {
  padding: 13px 14px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}

.schedule-table th {
  background: var(--navy-950);
  color: white;
  font-size: 0.74rem;
  font-weight: 850;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.schedule-table tbody tr:last-child td {
  border-bottom: 0;
}

.schedule-table th:nth-child(1),
.schedule-table .time-cell {
  width: 112px;
  white-space: nowrap;
}

.schedule-table th:nth-child(2) {
  width: 140px;
}

.schedule-table .session-cell {
  color: var(--navy-800);
  font-weight: 820;
  white-space: nowrap;
}

.schedule-table th:nth-child(3) {
  width: 180px;
}

.schedule-table th:nth-child(4) {
  width: 220px;
}

.schedule-table th:nth-child(5) {
  min-width: 360px;
}

.card-icon {
  display: inline-grid;
  place-items: center;
  min-width: 48px;
  height: 34px;
  margin-bottom: 24px;
  padding: 0 12px;
  border-radius: 999px;
  color: var(--navy-950);
  background: var(--sky-100);
  font-size: 0.78rem;
  font-weight: 850;
}

.card p {
  margin: 12px 0 0;
  color: var(--muted);
}

.venue-layout {
  align-items: start;
}

.boarding-maps-title {
  margin: 34px 0 0;
  color: var(--navy-950);
  font-size: clamp(1.2rem, 2vw, 1.45rem);
}

.boarding-maps {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  margin-top: 14px;
}

.boarding-maps figure {
  margin: 0;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: white;
  box-shadow: 0 14px 34px rgba(5, 38, 79, 0.08);
}

.boarding-maps img {
  display: block;
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  transition: transform 180ms ease, filter 180ms ease;
}

.boarding-maps a {
  display: block;
}

.boarding-maps a:hover img,
.boarding-maps a:focus-visible img {
  filter: brightness(0.94);
  transform: scale(1.02);
}

.boarding-maps figcaption {
  padding: 12px 14px;
  color: var(--navy-950);
  font-size: 0.9rem;
  font-weight: 820;
}

.text-link {
  display: inline-flex;
  margin-top: 22px;
  color: var(--navy-800);
  font-weight: 780;
  text-decoration-color: var(--cyan-500);
  text-underline-offset: 5px;
}

.inline-link {
  margin-top: 0;
}

.schedule {
  padding: 26px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: white;
  box-shadow: var(--shadow);
}

.schedule h3 {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  font-size: 1.25rem;
}

.schedule h3 span {
  color: var(--muted);
  font-size: 0.74rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.schedule ol {
  display: grid;
  gap: 16px;
  margin: 24px 0 0;
  padding: 0;
  list-style: none;
}

.schedule > ol > li {
  display: grid;
  gap: 4px;
  padding-left: 18px;
  border-left: 3px solid var(--cyan-500);
}

.schedule time {
  color: var(--navy-950);
  font-weight: 820;
}

.schedule-label {
  color: var(--muted);
  font-weight: 720;
}

.stop-list {
  display: grid;
  gap: 3px;
  margin: 4px 0 0;
  padding: 0;
  color: var(--muted);
  list-style: none;
}

.stop-list li {
  display: grid;
  grid-template-columns: 54px minmax(0, 1fr);
  gap: 10px;
}

.stop-list span {
  color: var(--navy-950);
  font-weight: 780;
}

.contact-row {
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.contact-row > div {
  display: grid;
  gap: 6px;
  padding: 26px;
  background: white;
}

.contact-row a {
  color: var(--navy-800);
  font-weight: 720;
}

.previous-panel {
  max-width: 1120px;
}

.previous-panel p {
  white-space: nowrap;
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  padding: 30px clamp(20px, 5vw, 72px);
  color: rgba(255, 255, 255, 0.78);
  background: var(--navy-950);
  font-size: 0.9rem;
}

.site-footer span:first-child {
  color: white;
  font-weight: 820;
}

@media (max-width: 900px) {
  .site-header {
    align-items: flex-start;
    flex-direction: column;
    gap: 12px;
  }

  nav {
    width: 100%;
    overflow-x: auto;
    padding-bottom: 2px;
  }

  .hero-inner {
    grid-template-columns: 1fr;
    gap: 22px;
    padding-top: 46px;
  }

  .hero-mark {
    width: min(190px, 52vw);
  }

  h1,
  .subtitle {
    white-space: normal;
  }

  .quick-info,
  .text-grid,
  .cards,
  .notice-grid,
  .contact-row,
  .boarding-maps {
    grid-template-columns: 1fr;
  }

  .registration-details {
    grid-template-columns: 1fr;
  }

  .previous-panel p {
    white-space: normal;
  }
}

@media (max-width: 560px) {
  .site-header {
    min-height: 0;
    padding: 12px 16px;
  }

  .brand {
    letter-spacing: 0;
  }

  nav {
    gap: 18px;
    font-size: 0.84rem;
  }

  .hero {
    min-height: 0;
  }

  .hero-inner {
    width: min(100% - 32px, 1180px);
    min-height: 0;
    padding: 38px 0 78px;
  }

  h1 {
    font-size: clamp(3.4rem, 18vw, 4.4rem);
  }

  .subtitle {
    margin-top: 18px;
  }

  .button {
    width: 100%;
  }

  .info-item {
    min-height: 0;
    padding: 22px 20px;
  }

  .section,
  .section.band {
    padding-top: 64px;
    padding-bottom: 64px;
  }

  .card,
  .notice-card,
  .schedule {
    padding: 22px;
  }

  .schedule-list li,
  .hot-spring-list li {
    grid-template-columns: 1fr;
    gap: 2px;
  }

  .program-schedule {
    padding: 22px;
  }

  .schedule-table {
    min-width: 860px;
    font-size: 0.84rem;
  }

  .schedule-table th,
  .schedule-table td {
    padding: 11px 12px;
  }

  .site-footer {
    flex-direction: column;
  }
}