@charset "UTF-8";

/* =========================================================
  Base
========================================================= */
:root {
  --color-navy: #0d2742;
  --color-blue: #165b91;
  --color-blue-light: #e9f3fa;
  --color-cyan: #43a9d7;
  --color-text: #253342;
  --color-muted: #667789;
  --color-border: #d9e3ea;
  --color-bg: #f5f8fb;
  --color-white: #fff;
  --shadow: 0 18px 45px rgba(13, 39, 66, 0.12);
  --radius: 18px;
  --container: 1120px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--color-text);
  font-family: "Yu Gothic", "YuGothic", "Hiragino Kaku Gothic ProN", "Meiryo", sans-serif;
  line-height: 1.8;
  letter-spacing: 0.02em;
  background: var(--color-white);
}

img {
  max-width: 100%;
  height: auto;
  vertical-align: middle;
}

a {
  color: var(--color-blue);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

.container {
  width: min(100% - 40px, var(--container));
  margin: 0 auto;
}

.container.narrow {
  max-width: 860px;
}

/* =========================================================
  Header
========================================================= */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.94);
  border-bottom: 1px solid var(--color-border);
  backdrop-filter: blur(12px);
}

.header-inner {
  width: min(100% - 32px, var(--container));
  min-height: 92px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 28px;
}

.site-logo {
  margin: 0;
  line-height: 1;
}

.site-logo a {
  display: inline-flex;
  align-items: center;
  min-width: 0;
  color: var(--color-navy);
  font-weight: 700;
  text-decoration: none;
}

.site-logo img {
  width: clamp(160px, 28vw, 221px);
  max-height: 60px;
  height: auto;
}

.logo-text {
  display: none;
  font-size: 1.25rem;
  letter-spacing: 0.12em;
}

.global-nav {
  margin-left: auto;
}

.global-nav ul {
  display: flex;
  gap: 22px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.global-nav a {
  color: var(--color-text);
  font-size: 0.92rem;
  font-weight: 700;
  text-decoration: none;
}

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

.header-entry-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  padding: 0 22px;
  color: var(--color-white);
  font-weight: 700;
  background: linear-gradient(135deg, var(--color-blue), var(--color-cyan));
  border-radius: 999px;
  box-shadow: 0 8px 18px rgba(22, 91, 145, 0.22);
  text-decoration: none;
  white-space: nowrap;
}

.header-entry-button:hover {
  text-decoration: none;
  opacity: 0.9;
}

.menu-button {
  display: none;
}

/* =========================================================
  Hero
========================================================= */
.hero {
  position: relative;
  overflow: hidden;
  color: var(--color-white);
  background: #092036;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(90deg, rgba(6, 20, 36, 0.72) 0%, rgba(7, 24, 42, 0.50) 42%, rgba(7, 24, 42, 0.16) 100%),
    linear-gradient(180deg, rgba(9, 32, 54, 0.10) 0%, rgba(9, 32, 54, 0.56) 100%),
    url("../img/main-visual.png");
  background-size: cover, cover, cover;
  background-position: center center, center center, 72% center;
  background-repeat: no-repeat;
}

.hero-bg::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 76% 30%, rgba(86, 176, 230, 0.26), transparent 28%),
    radial-gradient(circle at 68% 56%, rgba(56, 228, 173, 0.16), transparent 24%),
    radial-gradient(circle at 18% 68%, rgba(92, 142, 255, 0.14), transparent 22%);
}

.hero-bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(255, 255, 255, 0.055) 1px, transparent 1px),
    linear-gradient(0deg, rgba(255, 255, 255, 0.04) 1px, transparent 1px);
  background-size: 62px 62px;
  opacity: 0.26;
}

.hero-inner {
  position: relative;
  z-index: 1;
  width: min(100% - 40px, var(--container));
  min-height: 620px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr;
  align-items: center;
  padding: 82px 0;
}

.hero-content {
  width: 100%;
}

.section-kicker {
  margin: 0 0 12px;
  color: var(--color-cyan);
  font-size: 0.82rem;
  font-weight: 800;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}


.hero-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 0 0 18px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  min-height: 48px;
  padding: 0 18px;
  color: var(--color-white);
  font-size: 0.95rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  box-shadow: 0 12px 24px rgba(8, 30, 48, 0.28);
}

.hero-badge--venue {
  background: linear-gradient(135deg, rgba(45, 170, 210, 0.96), rgba(16, 95, 145, 0.94));
}

.hero-badge--fee {
  background: linear-gradient(135deg, rgba(255, 166, 60, 0.96), rgba(234, 112, 44, 0.94));
}

.badge-icon {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.16);
  flex: 0 0 26px;
}

.badge-icon-venue::before {
  content: "";
  width: 12px;
  height: 12px;
  border: 2px solid #ffffff;
  border-radius: 3px;
  box-shadow: inset 0 -4px 0 rgba(255, 255, 255, 0.18);
}

.badge-icon-fee::before {
  content: "";
  width: 12px;
  height: 7px;
  border-left: 3px solid #ffffff;
  border-bottom: 3px solid #ffffff;
  transform: rotate(-45deg) translateY(-1px);
}

.hero-meta {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.hero-meta-top {
  max-width: 980px;
  margin: 34px 0 0;
}

.hero-meta div {
  position: relative;
  padding: 20px 24px 18px;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.15), rgba(255, 255, 255, 0.08));
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 18px;
  backdrop-filter: blur(8px);
  overflow: hidden;
  box-shadow: 0 18px 34px rgba(4, 18, 32, 0.22);
}

.hero-meta div::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, rgba(67, 169, 215, 0.95), rgba(105, 203, 239, 0.72));
}

.hero-meta span {
  display: block;
  color: rgba(255, 255, 255, 0.82);
  font-size: 0.84rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.hero-meta strong {
  display: block;
  margin-top: 8px;
  font-size: clamp(1.55rem, 2.1vw, 2.15rem);
  line-height: 1.35;
  letter-spacing: 0.01em;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 34px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 52px;
  padding: 0 28px;
  border-radius: 999px;
  font-weight: 800;
  text-decoration: none;
  transition: transform 0.2s ease, opacity 0.2s ease, box-shadow 0.2s ease;
}

.button:hover {
  transform: translateY(-1px);
  text-decoration: none;
  opacity: 0.92;
}

.button-primary {
  color: var(--color-white);
  background: linear-gradient(135deg, #0c6da8, #42afd9);
  box-shadow: 0 12px 28px rgba(5, 61, 100, 0.32);
}

.button-secondary {
  color: var(--color-white);
  border: 1px solid rgba(255, 255, 255, 0.5);
  background: rgba(255, 255, 255, 0.08);
}

.button.large {
  min-height: 58px;
  padding-inline: 36px;
  font-size: 1.05rem;
}


/* =========================================================
  Sections
========================================================= */
.section {
  padding: 88px 0;
}

.section-light {
  background: var(--color-bg);
}

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

.section-heading.center {
  text-align: center;
}

.section-heading h2 {
  margin: 0;
  color: var(--color-navy);
  font-size: clamp(1.7rem, 3vw, 2.45rem);
  line-height: 1.35;
}

.section-note {
  max-width: 760px;
  margin: 14px 0 0;
  color: var(--color-muted);
  font-size: 0.92rem;
}

.lead-text {
  margin: 0;
  font-size: 1.08rem;
}

.greeting-box {
  display: grid;
  grid-template-columns: 240px minmax(0, 1fr);
  gap: 34px;
  align-items: start;
}

.greeting-photo-wrap {
  padding: 18px;
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.greeting-photo {
  display: block;
  width: 100%;
  aspect-ratio: 3 / 4;
  object-fit: cover;
  border-radius: 12px;
}

.greeting-text {
  padding: 34px;
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.greeting-text p {
  margin: 0;
  font-size: 1.03rem;
}

.greeting-text p + p {
  margin-top: 1em;
}

.greeting-sign {
  color: var(--color-navy);
  font-weight: 700;
  text-align: right;
}

.two-column {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(300px, 0.65fr);
  gap: 34px;
  align-items: start;
}

.overview-list {
  margin: 0;
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
}

.overview-list div {
  display: grid;
  grid-template-columns: 180px 1fr;
  border-bottom: 1px solid var(--color-border);
}

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

.overview-list dt,
.overview-list dd {
  margin: 0;
  padding: 18px 22px;
}

.overview-list dt {
  color: var(--color-navy);
  font-weight: 800;
  background: #eef5f9;
}

.note-box,
.venue-card,
.contact-box {
  padding: 30px;
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.note-box h3,
.venue-card h3 {
  margin: 0 0 12px;
  color: var(--color-navy);
  font-size: 1.25rem;
  line-height: 1.5;
}

.note-box p,
.venue-card p,
.contact-box p {
  margin: 0;
}

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

.feature-card {
  padding: 30px;
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.feature-label {
  display: inline-flex;
  align-items: center;
  min-height: 30px;
  padding: 0 13px;
  margin-bottom: 18px;
  color: var(--color-white);
  font-size: 0.82rem;
  font-weight: 800;
  background: var(--color-blue);
  border-radius: 999px;
}

.feature-card h3 {
  margin: 0 0 12px;
  color: var(--color-navy);
  font-size: 1.25rem;
  line-height: 1.45;
}

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

.check-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.check-list li {
  position: relative;
  padding: 12px 0 12px 34px;
  border-bottom: 1px solid var(--color-border);
}

.check-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 1.25em;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--color-blue-light);
}

.check-list li::after {
  content: "";
  position: absolute;
  left: 6px;
  top: calc(1.25em + 4px);
  width: 6px;
  height: 9px;
  border: solid var(--color-blue);
  border-width: 0 2px 2px 0;
  transform: rotate(45deg);
}

/* =========================================================
  Program
========================================================= */
.program-list {
  display: grid;
  gap: 18px;
}

.program-item {
  display: grid;
  grid-template-columns: 210px 1fr;
  gap: 0;
  overflow: hidden;
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  box-shadow: 0 12px 32px rgba(13, 39, 66, 0.08);
}

.program-time {
  padding: 24px;
  color: var(--color-white);
  font-size: 1.05rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--color-navy), var(--color-blue));
}

.program-time span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 34px;
  height: 22px;
  margin-left: 8px;
  color: var(--color-navy);
  font-size: 0.72rem;
  background: #fff;
  border-radius: 999px;
}

.program-body {
  padding: 24px 28px;
}

.program-category {
  margin: 0 0 4px;
  color: var(--color-blue);
  font-size: 0.82rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.program-body h3 {
  margin: 0 0 8px;
  color: var(--color-navy);
  font-size: 1.35rem;
  line-height: 1.45;
}

.program-body p {
  margin: 0;
}

.program-body p + p {
  margin-top: 10px;
}

.speaker {
  color: var(--color-muted);
  font-weight: 700;
}

.program-item.break {
  border-style: dashed;
  box-shadow: none;
}

.program-item.break .program-time {
  background: #6f8193;
}

.program-item.break .program-body {
  display: flex;
  align-items: center;
}

.program-item.break h3 {
  font-size: 1.1rem;
}

/* =========================================================
  Venue / Entry / Footer
========================================================= */
.venue-name {
  margin: 0 0 12px;
  color: var(--color-navy);
  font-size: 1.25rem;
  font-weight: 800;
}

.entry-section {
  padding: 58px 0;
  color: var(--color-white);
  background: linear-gradient(135deg, var(--color-navy), var(--color-blue));
}

.entry-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
}

.entry-inner h2 {
  margin: 0 0 8px;
  font-size: 2rem;
}

.entry-inner p {
  margin: 0;
  color: rgba(255, 255, 255, 0.86);
}

.contact-box {
  text-align: center;
}

.contact-box p + p {
  margin-top: 6px;
}

.site-footer {
  padding: 32px 0;
  color: rgba(255, 255, 255, 0.78);
  background: #071827;
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.site-footer a {
  color: var(--color-white);
  font-weight: 700;
}

.site-footer p {
  margin: 0;
}

/* =========================================================
  Responsive
========================================================= */
@media (max-width: 960px) {
  .header-inner {
    gap: 16px;
  }

  .global-nav {
    position: absolute;
    left: 16px;
    right: 16px;
    top: 92px;
    display: none;
    padding: 16px;
    background: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: 16px;
    box-shadow: var(--shadow);
  }

  .global-nav.is-open {
    display: block;
  }

  .global-nav ul {
    display: grid;
    gap: 8px;
  }

  .global-nav a {
    display: block;
    padding: 10px 6px;
  }

  .menu-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    margin-left: auto;
    min-height: 40px;
    padding: 0 12px;
    color: var(--color-navy);
    font-weight: 800;
    background: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: 999px;
  }

  .two-column {
    grid-template-columns: 1fr;
  }

  .hero-inner {
    min-height: 560px;
    padding: 68px 0;
  }

  .feature-grid {
    grid-template-columns: 1fr;
  }

  .entry-inner,
  .footer-inner {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (max-width: 640px) {
  .container,
  .header-inner,
  .hero-inner {
    width: min(100% - 28px, var(--container));
  }

  .header-inner {
    min-height: 70px;
  }

  .global-nav {
    top: 70px;
  }

  .site-logo img {
    width: clamp(150px, 44vw, 220px);
  }

  .header-entry-button {
    padding: 0 14px;
    font-size: 0.88rem;
  }

  .hero h2 {
    font-size: 2rem;
  }

  .hero-badges {
    gap: 10px;
  }

  .hero-badge {
    width: 100%;
    justify-content: flex-start;
  }

  .hero-meta {
    grid-template-columns: 1fr;
  }

  .hero-meta-top {
    margin-top: 24px;
  }

  .hero-meta strong {
    font-size: 1.45rem;
  }

  .hero-actions,
  .button {
    width: 100%;
  }

  .section {
    padding: 64px 0;
  }

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

  .overview-list dt,
  .overview-list dd {
    padding: 14px 18px;
  }

  .greeting-box {
    grid-template-columns: 1fr;
  }

  .greeting-photo-wrap {
    max-width: 320px;
  }

  .greeting-text {
    padding: 22px 18px;
  }

  .overview-list dd {
    padding-top: 10px;
  }

  .program-item {
    grid-template-columns: 1fr;
  }

  .program-time {
    padding: 16px 20px;
  }

  .program-body {
    padding: 20px;
  }

  .program-body h3 {
    font-size: 1.18rem;
  }

  .entry-inner .button {
    width: 100%;
  }
}


/* =========================================================
  Hero main title size
  PC表示でブラウザ標準サイズに戻らないよう、専用クラスで明示的に指定
========================================================= */
.hero .hero-title,
.hero h2.hero-title {
  display: block;
  width: 100%;
  margin: 0;
  color: #ffffff;
  font-size: clamp(3.0rem, 4.3vw, 4.3rem);
  line-height: 1.16;
  letter-spacing: 0.03em;
  font-weight: 600;
}

@media (max-width: 960px) {
  .hero .hero-title,
  .hero h2.hero-title {
    font-size: clamp(2.7rem, 7vw, 4.2rem);
  }
}

@media (max-width: 640px) {
  .hero .hero-title,
  .hero h2.hero-title {
    font-size: clamp(2.15rem, 10vw, 3.2rem);
    line-height: 1.22;
  }
}


/* =========================================================
  v11 fine adjustment
========================================================= */
.header-entry-button,
.button-primary,
.entry-section .button-primary {
  color: #ffffff !important;
  background: linear-gradient(135deg, #f08a24 0%, #f26b2b 55%, #d94c1f 100%) !important;
  box-shadow: 0 10px 24px rgba(220, 89, 34, 0.28) !important;
}

.header-entry-button:hover,
.button-primary:hover,
.entry-section .button-primary:hover {
  opacity: 0.92;
}

.hero-badge--fee {
  background: linear-gradient(135deg, #35b777 0%, #159864 55%, #08784f 100%) !important;
}

.hero-meta,
.hero-meta-top {
  display: flex !important;
  flex-wrap: wrap;
  gap: 34px;
  max-width: none;
  margin: 30px 0 0;
}

.hero-meta-top > div:first-child {
  margin-right: 30px;
}

.hero-meta div {
  position: relative;
  min-width: 260px;
  padding: 0 0 0 18px !important;
  background: transparent !important;
  border: 0 !important;
  border-radius: 0 !important;
  box-shadow: none !important;
  backdrop-filter: none !important;
  overflow: visible !important;
}

.hero-meta div::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.35em;
  width: 4px;
  height: calc(100% - 0.7em);
  background: linear-gradient(180deg, #43a9d7, #78d8ff);
  border-radius: 999px;
}

.hero-meta span {
  display: block;
  color: rgba(255, 255, 255, 0.72);
  font-size: 0.84rem;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.hero-meta strong {
  display: block;
  margin-top: 4px;
  color: #ffffff;
  font-size: clamp(1.65rem, 2.15vw, 2.15rem);
  line-height: 1.42;
  letter-spacing: 0.04em;
  text-shadow: 0 2px 12px rgba(0, 0, 0, 0.35);
}

.highlight-list {
  background: var(--color-white);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.highlight-item {
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: 10px;
  padding: 30px 20px;
  border-bottom: 1px solid var(--color-border);
}

.highlight-item:last-child {
  border-bottom: 0;
}

.highlight-head {
  display: flex;
  align-items: baseline;
  gap: 14px;
}

.highlight-number {
  color: rgba(22, 91, 145, 0.22);
  font-size: 2.8rem;
  font-weight: 800;
  line-height: 1;
  letter-spacing: 0.04em;
}

.highlight-label {
  color: var(--color-blue);
  font-size: 0.95rem;
  font-weight: 800;
  letter-spacing: 0.14em;
}

.highlight-body h3 {
  margin: 0 0 8px;
  color: var(--color-navy);
  font-size: 1.35rem;
  line-height: 1.45;
}

.highlight-body p {
  margin: 0;
  color: var(--color-muted);
}

.target-visual-box {
  overflow: hidden;
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.target-visual-box img {
  display: block;
  width: 100%;
  height: 100%;
  min-height: 320px;
  object-fit: cover;
}

.venue-map {
  overflow: hidden;
  min-height: 340px;
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.venue-map iframe {
  display: block;
  width: 100%;
  height: 100%;
  min-height: 340px;
  border: 0;
}

@media (max-width: 960px) {
  .highlight-item {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .highlight-number {
    font-size: 2.3rem;
  }

  .target-visual-box img {
    min-height: 260px;
  }
}

@media (max-width: 640px) {
  .hero-meta,
  .hero-meta-top {
    display: grid !important;
    gap: 18px;
  }

  .hero-meta div {
    min-width: 0;
  }

  .hero-meta strong {
    font-size: 1.45rem;
  }

  .highlight-item {
    padding: 24px 0;
  }

  .highlight-body h3 {
    font-size: 1.18rem;
  }
}

/* =========================================================
  v12 venue layout adjustment
  会場セクション：説明 4 / 地図 6 の比率に調整
========================================================= */
.venue-section .two-column {
  grid-template-columns: minmax(0, 0.4fr) minmax(0, 0.6fr);
  align-items: stretch;
}

.venue-section .venue-map {
  min-height: 380px;
}

.venue-section .venue-map iframe {
  min-height: 380px;
}

@media (max-width: 960px) {
  .venue-section .two-column {
    grid-template-columns: 1fr;
  }
}


/* =========================================================
  v13 fine adjustment
========================================================= */
/* 参加申込ボタン：ぼかし（影）を削除 */
.header-entry-button,
.button-primary,
.entry-section .button-primary {
  box-shadow: none !important;
}

.button {
  transition: transform 0.2s ease, opacity 0.2s ease;
}

/* 見どころ：番号横の製品名を削除したため、番号のみで整える */
.highlight-head {
  gap: 0;
}

.highlight-label {
  display: none !important;
}

/* お問い合わせボタン */
.contact-button-wrap {
  margin-top: 22px !important;
}

.contact-button {
  min-height: 52px;
  padding: 0 30px;
  color: #ffffff !important;
  background: linear-gradient(135deg, var(--color-blue), var(--color-cyan));
  border-radius: 999px;
  font-weight: 800;
  text-decoration: none !important;
  box-shadow: none;
}

.contact-button:hover {
  opacity: 0.9;
  text-decoration: none !important;
}


/* =========================================================
  v14 hero date note
  メイン開催日の時間情報
========================================================= */
.hero-date-note {
  display: block;
  margin-top: 6px;
  color: rgba(255, 255, 255, 0.86);
  font-size: clamp(0.95rem, 1.15vw, 1.08rem);
  line-height: 1.55;
  letter-spacing: 0.03em;
  text-shadow: 0 2px 10px rgba(0, 0, 0, 0.32);
}

@media (max-width: 640px) {
  .hero-date-note {
    font-size: 0.92rem;
  }
}


/* =========================================================
  v15 program / contact precise adjustments
========================================================= */
.program-item-simple .program-body h3 {
  margin-bottom: 0;
}

.program-speaker-card {
  display: grid;
  grid-template-columns: 112px minmax(0, 1fr);
  gap: 18px;
  align-items: center;
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px solid var(--color-border);
}

.program-speaker-photo {
  display: block;
  width: 112px;
  aspect-ratio: 4 / 5;
  object-fit: cover;
  border-radius: 14px;
  border: 1px solid var(--color-border);
  box-shadow: 0 8px 20px rgba(13, 39, 66, 0.12);
  background: #eef4f8;
}

.program-speaker-info .speaker {
  margin: 0;
}

.program-speaker-info .speaker + .speaker {
  margin-top: 8px;
}

.contact-box p {
  word-break: keep-all;
}

@media (max-width: 640px) {
  .program-speaker-card {
    grid-template-columns: 84px minmax(0, 1fr);
    gap: 14px;
  }

  .program-speaker-photo {
    width: 84px;
  }
}


/* =========================================================
  hero-lead
========================================================= */
.hero-lead {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 24px;
  margin: 14px 0 0;
  color: rgba(255, 255, 255, 0.92);
  font-size: 1.70em;
  font-weight: 700;
}

.hero-lead span {
  display: inline-block;
}

@media (max-width: 640px) {
  .hero-lead {
    display: grid;
    gap: 4px;
    font-size: 0.9rem;
  }
}

/* =========================================================
  Organizer / Sponsor
========================================================= */
.hero-organizer {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 24px;
  margin: 14px 0 0;
  color: rgba(255, 255, 255, 0.92);
  font-size: 1.40rem;
  font-weight: 700;
}

.hero-organizer span {
  display: inline-block;
}

@media (max-width: 640px) {
  .hero-organizer {
    display: grid;
    gap: 4px;
    font-size: 0.9rem;
  }
}