/* ==========================================================================
   情シス Update Day 2026 LP — Stylesheet
   Softcreate Design System
   Color Palette: Update Blue (#008EF5) / Sky Blue (#5CCDF8) / Future Pink (#F43EBB) / Energy Yellow (#F8D847)
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;600;700;900&family=Noto+Sans+JP:wght@300;400;500;700;900&display=swap');

/* ==========================================================================
   Design Tokens / CSS Custom Properties
   ========================================================================== */
:root {
  /* Brand Color Tokens */
  --color-primary: #008EF5;         /* Update Blue */
  --color-primary-dark: #0070C8;
  --color-secondary: #5CCDF8;       /* Sky Blue */
  --color-accent: #F43EBB;          /* Future Pink */
  --color-highlight: #F8D847;       /* Energy Yellow */

  /* Category Accent Colors */
  --color-accent-cyan: #5CCDF8;
  --color-accent-magenta: #F43EBB;
  --color-accent-green: #10B981;
  --color-accent-purple: #8B5CF6;

  /* Background Tokens */
  --bg-white: #FFFFFF;
  --bg-section: #F7F9FC;
  --bg-sub: #EEF7FD;
  --bg-light: #F7F9FC;

  /* Text Tokens */
  --text-main: #1E293B;
  --text-muted: #475569;
  --text-dim: #94A3B8;
  --text-caption: #94A3B8;
  --text-white: #FFFFFF;

  /* Border Tokens */
  --border-color: #E2E8F0;
  --border-glow: rgba(0, 142, 245, 0.25);

  /* Gradient Tokens */
  --gradient-primary: linear-gradient(135deg, #008EF5 0%, #5CCDF8 45%, #F43EBB 100%);
  --gradient-cta: linear-gradient(135deg, #008EF5 0%, #009EFF 40%, #28B8FF 100%);
  --gradient-highlight: linear-gradient(135deg, #008EF5 0%, #B95CFF 50%, #F43EBB 100%);
  --gradient-hero: linear-gradient(135deg, #FFFFFF 0%, #F7F9FC 60%, #EEF7FD 100%);
  --gradient-card: linear-gradient(135deg, rgba(0, 142, 245, 0.04), rgba(244, 62, 187, 0.04));

  /* Radius Tokens */
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 24px;
  --radius-xl: 32px;
  --radius-full: 9999px;

  /* Shadow Tokens */
  --shadow-soft: 0 4px 20px rgba(0, 142, 245, 0.06);
  --shadow-card: 0 10px 30px -10px rgba(0, 142, 245, 0.12);
  --shadow-strong: 0 20px 50px rgba(30, 41, 59, 0.10);
  --shadow-btn: 0 4px 16px rgba(0, 142, 245, 0.35);

  /* Transition Tokens */
  --transition-fast: 0.20s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 0.35s cubic-bezier(0.4, 0, 0.2, 1);

  /* Header Height */
  --header-h: 68px;
}

/* ==========================================================================
   Reset & Base Styles
   ========================================================================== */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-family: 'Noto Sans JP', 'Inter', sans-serif;
  background: var(--bg-white);
  color: var(--text-main);
  line-height: 1.6;
  overflow-x: hidden;
}

body {
  position: relative;
  min-height: 100vh;
}

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

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

/* Focus Visible for Accessibility */
a:focus-visible,
button:focus-visible,
[tabindex="0"]:focus-visible,
.session-cell:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 3px;
}

/* ==========================================================================
   Layout Utilities
   ========================================================================== */
.container {
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 24px;
  position: relative;
  z-index: 1;
}

.section-pad {
  padding: 96px 0;
}

.section-pad-sm {
  padding: 72px 0;
}

.section-lead {
  margin-top: 12px;
  font-size: 1rem;
  color: var(--text-muted);
  max-width: 640px;
  margin-left: auto;
  margin-right: auto;
  line-height: 1.8;
}

/* ==========================================================================
   0. HEADER / NAVIGATION
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--header-h);
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-color);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 24px;
}

.header-logo {
  display: flex;
  align-items: center;
  text-decoration: none;
  flex-shrink: 0;
}

.header-logo-img {
  height: 26px;
  width: auto;
  display: block;
}

.header-nav {
  display: flex;
  align-items: center;
  gap: 22px;
  margin-left: auto;
  margin-right: 28px;
}

.header-nav a {
  font-size: 0.90rem;
  font-weight: 700;
  color: var(--text-main);
  padding: 6px 10px;
  border-radius: var(--radius-sm);
  transition: color var(--transition-fast);
  white-space: nowrap;
}

.header-nav a:hover {
  color: var(--color-primary);
}

.header-cta {
  display: flex;
  align-items: center;
  flex-shrink: 0;
}

.header-cta .btn-cta-mini {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--gradient-cta);
  color: #ffffff;
  font-size: 0.88rem;
  font-weight: 700;
  padding: 9px 24px;
  border-radius: var(--radius-full);
  box-shadow: 0 4px 12px rgba(0, 142, 245, 0.25);
  transition: transform var(--transition-fast), background var(--transition-fast), box-shadow var(--transition-fast);
  white-space: nowrap;
}

.header-cta .btn-cta-mini:hover {
  background: var(--gradient-primary);
  transform: translateY(-1px);
  box-shadow: 0 6px 16px rgba(244, 62, 187, 0.35);
}

/* Hamburger Toggle Input (CSS Only) */
.hamburger-toggle {
  display: none;
}

/* Hamburger Button */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
  border-radius: var(--radius-sm);
  user-select: none;
}

.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-primary);
  border-radius: 2px;
  transition: var(--transition-fast);
}

.hamburger-toggle:checked ~ .site-header .hamburger span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.hamburger-toggle:checked ~ .site-header .hamburger span:nth-child(2) {
  opacity: 0;
}

.hamburger-toggle:checked ~ .site-header .hamburger span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.mobile-nav {
  display: none;
  position: fixed;
  top: var(--header-h);
  left: 0;
  right: 0;
  background: #ffffff;
  border-bottom: 1px solid var(--border-color);
  z-index: 99;
  padding: 16px 24px;
  flex-direction: column;
  gap: 4px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
}

.hamburger-toggle:checked ~ .mobile-nav {
  display: flex;
}

.mobile-nav a {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-muted);
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  transition: color var(--transition-fast), background var(--transition-fast);
}

.mobile-nav a:hover {
  color: var(--color-primary);
  background: rgba(0, 75, 177, 0.06);
}

.mobile-nav .mobile-cta-btn {
  margin-top: 8px;
  display: block;
  text-align: center;
  background: var(--color-primary);
  color: #ffffff;
  font-weight: 700;
  padding: 14px;
  border-radius: var(--radius-full);
}

/* ==========================================================================
   1. HERO Section
   ========================================================================== */
#hero,
.hero-section {
  position: relative;
  min-height: 580px;
  padding-top: 80px;
  padding-bottom: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background-color: #0F1E38;
}

/* 背景画像ラッパー */
.hero-bg-wrap {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
}

.hero-bg-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

/* インナーコンテンツ */
.hero-inner {
  position: relative;
  z-index: 3;
  width: 100%;
  max-width: 960px;
  margin: 0 auto;
  padding: 10px 32px 64px;
  text-align: center;
  color: #ffffff;
}

/* メインビジュアル画像 */
.hero-kv-title {
  margin: 0 auto 32px;
  max-width: 900px;
  width: 100%;
}

.hero-kv-title picture {
  display: block;
  width: 100%;
}

.hero-kv-img {
  width: 100%;
  height: auto;
  display: block;
}

/* CTAエリア */
.hero-cta-wrapper {
  background: transparent;
  padding: 0;
  margin-top: 32px;
}

/* CTA ボタン */
.btn-cta,
.btn-hero-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: var(--gradient-cta);
  color: #ffffff;
  font-family: inherit;
  font-size: 1rem;
  font-weight: 800;
  padding: 16px 36px;
  border-radius: var(--radius-full);
  box-shadow: var(--shadow-btn);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), background var(--transition-fast);
  letter-spacing: 0.3px;
  text-decoration: none;
}

.btn-cta:hover,
.btn-hero-primary:hover {
  transform: translateY(-2px);
  background: var(--gradient-primary);
  box-shadow: 0 8px 28px rgba(244, 62, 187, 0.35);
  color: #ffffff;
  text-decoration: none;
}

/* Hero Wave Divider */
.wave-divider {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  line-height: 0;
  overflow: hidden;
  z-index: 4;
  pointer-events: none;
}

.wave-divider svg {
  display: block;
  width: 100%;
  height: auto;
}

/* ==========================================================================
   Sticky CTA (Floating) - 高誘目性リッチデザイン
   ========================================================================== */
.sticky-cta-container {
  position: fixed;
  bottom: 28px;
  right: 28px;
  z-index: 95;
  display: flex;
  flex-direction: column;
  align-items: center;
  opacity: 1;
  transform: translateY(0) scale(1);
  transition: opacity 0.35s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.35s cubic-bezier(0.16, 1, 0.3, 1);
  pointer-events: auto;
  filter: drop-shadow(0 10px 28px rgba(244, 62, 187, 0.35));
}

.sticky-cta-container.visible {
  opacity: 1;
  transform: translateY(0) scale(1);
  pointer-events: auto;
}

/* 訴求バッジ */
.sticky-cta-badge {
  background: linear-gradient(135deg, #1E293B 0%, #0F172A 100%);
  color: #F8D847;
  font-size: 0.72rem;
  font-weight: 800;
  padding: 4px 14px;
  border-radius: var(--radius-full);
  border: 1.5px solid #F8D847;
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.25);
  margin-bottom: -9px;
  z-index: 3;
  letter-spacing: 0.04em;
  white-space: nowrap;
  animation: ctaBadgeFloat 2.5s ease-in-out infinite alternate;
}

@keyframes ctaBadgeFloat {
  0% { transform: translateY(0); }
  100% { transform: translateY(-2px); }
}

/* フローティングCTAボタン本体 */
.btn-floating-cta {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 16px;
  background: linear-gradient(135deg, #F43EBB 0%, #FF5A36 45%, #FFA800 100%);
  color: #ffffff;
  padding: 12px 22px 12px 26px;
  border-radius: var(--radius-full);
  border: 2px solid rgba(255, 255, 255, 0.9);
  box-shadow: 0 8px 24px rgba(244, 62, 187, 0.45),
              0 2px 6px rgba(0, 0, 0, 0.15),
              inset 0 1px 2px rgba(255, 255, 255, 0.6);
  text-decoration: none;
  cursor: pointer;
  overflow: hidden;
  transition: transform var(--transition-fast),
              box-shadow var(--transition-fast),
              filter var(--transition-fast);
  white-space: nowrap;
}

/* パルス波紋エフェクト */
.btn-floating-cta::before {
  content: '';
  position: absolute;
  inset: -4px;
  border-radius: var(--radius-full);
  border: 2px solid rgba(244, 62, 187, 0.65);
  opacity: 0;
  animation: ctaPulseRing 3s cubic-bezier(0.24, 0, 0.38, 1) infinite;
  pointer-events: none;
  z-index: 0;
}

@keyframes ctaPulseRing {
  0% {
    transform: scale(0.95);
    opacity: 0.8;
  }
  50% {
    transform: scale(1.12);
    opacity: 0;
  }
  100% {
    transform: scale(1.12);
    opacity: 0;
  }
}

/* 光沢シマー（Shimmer）アニメーション */
.btn-floating-cta::after {
  content: '';
  position: absolute;
  top: -50%;
  left: -60%;
  width: 40%;
  height: 200%;
  background: linear-gradient(
    90deg,
    rgba(255, 255, 255, 0) 0%,
    rgba(255, 255, 255, 0.55) 50%,
    rgba(255, 255, 255, 0) 100%
  );
  transform: rotate(25deg);
  animation: ctaShimmerSweep 3.5s ease-in-out infinite;
  pointer-events: none;
}

@keyframes ctaShimmerSweep {
  0% {
    left: -60%;
  }
  30%, 100% {
    left: 140%;
  }
}

/* テキストラベル構造 */
.btn-floating-cta-label {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 1px;
  position: relative;
  z-index: 1;
}

.btn-floating-cta-main {
  font-size: 1.05rem;
  font-weight: 900;
  letter-spacing: 0.04em;
  color: #ffffff;
  text-shadow: 0 1px 3px rgba(0, 0, 0, 0.25);
  line-height: 1.25;
}


/* 矢印アイコン */
.btn-floating-cta-arrow {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: #ffffff;
  color: #FF5A36;
  font-size: 0.95rem;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.18);
  flex-shrink: 0;
  position: relative;
  z-index: 1;
  transition: transform var(--transition-fast), background var(--transition-fast), color var(--transition-fast);
}

.btn-floating-cta-arrow i,
.btn-floating-cta-arrow .icon-enter {
  animation: ctaArrowNudge 1.6s ease-in-out infinite;
}

@keyframes ctaArrowNudge {
  0%, 100% { transform: translateX(0); }
  50% { transform: translateX(3px); }
}

/* ホバー演出 */
.btn-floating-cta:hover {
  transform: translateY(-3px) scale(1.02);
  box-shadow: 0 12px 32px rgba(244, 62, 187, 0.60),
              0 4px 12px rgba(255, 90, 54, 0.45),
              inset 0 1px 2px rgba(255, 255, 255, 0.8);
  filter: brightness(1.05);
}

.btn-floating-cta:hover .btn-floating-cta-arrow {
  transform: translateX(2px) scale(1.08);
  background: #FFF8E7;
  color: #F43EBB;
}

.btn-floating-cta:active {
  transform: translateY(-1px) scale(0.99);
}

/* ==========================================================================
   2. ABOUT Section & Shared Section Titles
   ========================================================================== */
.section-title {
  position: relative;
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  margin-inline: auto;
  margin-bottom: 0;
  padding-top: clamp(1.5rem, 2vw, 2.5rem);
}

.section-title__num {
  position: absolute;
  top: -1.75rem;
  left: -2.8rem;
  font-family: 'Inter', 'Poppins', sans-serif;
  font-weight: 300;
  letter-spacing: -0.05em;
  font-size: var(--fs-num, clamp(5rem, 3.5rem + 4vw, 8rem));
  color: #ffd01c;
  opacity: 0.35;
  line-height: 1;
  pointer-events: none;
  user-select: none;
  z-index: 0;
}

.section-title__en {
  font-family: 'Inter', sans-serif;
  font-weight: 800;
  font-size: clamp(2rem, 1.4rem + 2.2vw, 3.25rem);
  letter-spacing: 0.06em;
  color: var(--text-main);
  position: relative;
  z-index: 1;
  line-height: 1.1;
  margin-bottom: 0.5rem;
}

.section-title__ja {
  font-family: 'Noto Sans JP', sans-serif;
  font-weight: 700;
  font-size: clamp(0.95rem, 0.85rem + 0.35vw, 1.125rem);
  color: var(--color-primary);
  position: relative;
  z-index: 1;
  letter-spacing: 0.05em;
  display: inline-flex;
  align-items: center;
  gap: 12px;
}

.section-title__ja::before,
.section-title__ja::after {
  content: '';
  display: inline-block;
  width: 20px;
  height: 2px;
  background: var(--gradient-primary);
  border-radius: 2px;
  opacity: 0.85;
}


.section-title.is-light .section-title__num {
  color: #ffffff;
  opacity: 0.20;
}

.section-title.is-light .section-title__en {
  color: #ffffff;
}

.section-title.is-light .section-title__ja {
  color: rgba(255, 255, 255, 0.92);
}

.section-title.is-light .section-title__ja::before,
.section-title.is-light .section-title__ja::after {
  background: rgba(255, 255, 255, 0.6);
}

/* p-about Layout & Styles */
.p-about {
  background-color: var(--bg-section);
  background-repeat: no-repeat;
  background-position: center top;
  background-size: cover;
  padding-block: clamp(4rem, 6vw, 7.5rem);
  position: relative;
  overflow: hidden;
}

.p-about .container {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.p-about__title-wrap {
  margin-bottom: clamp(1.5rem, 3vw, 2.25rem);
  text-align: center;
}

.p-about__lead {
  max-width: 860px;
  width: 100%;
  margin: 0 auto;
}

.p-about__lead-main {
  padding-bottom: 2.5rem;
  margin-bottom: 2.5rem;
  border-bottom: 1px solid var(--border-color);
  text-align: left;
}

.p-about__catch {
  font-weight: 700;
  font-size: clamp(1.4rem, 1.05rem + 1.8vw, 2.1rem);
  line-height: 1.5;
  margin-bottom: 1.75rem;
  color: var(--text-main);
  text-align: left;
}

.p-about__catch strong {
  font-weight: 900;
  color: var(--color-primary);
}

.p-about__text {
  font-size: clamp(1rem, 0.95rem + 0.3vw, 1.05rem);
  font-weight: 500;
  line-height: 1.9;
  color: var(--text-muted);
  margin-bottom: 1.25rem;
  text-align: left;
}

.p-about__note {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-dim);
  text-align: left;
}

.p-about__cta-wrap {
  text-align: center;
  margin-top: 2rem;
}

/* Archive links */
.p-about__archives {
  text-align: center;
}

.p-about__archive-label {
  font-size: clamp(0.95rem, 0.85rem + 0.4vw, 1.05rem);
  font-weight: 700;
  margin-bottom: 1.25rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  color: var(--text-main);
}

.p-about__archive-label::before {
  content: '';
  display: block;
  width: 6px;
  height: 6px;
  background: var(--color-primary);
  border-radius: 50%;
  flex-shrink: 0;
}

.p-about__archive-links {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 1.25rem;
}

.bt-link {
  display: inline-flex;
  align-items: center;
  font-weight: 600;
  font-size: clamp(0.875rem, 0.8rem + 0.4vw, 0.98rem);
  color: var(--text-main);
  text-decoration: none;
  background-color: #ffffff;
  background-image: url("data:image/svg+xml;base64,PHN2ZyB3aWR0aD0iOSIgaGVpZ2h0PSIxMCIgdmlld0JveD0iMCAwIDkgMTAiIGZpbGw9Im5vbmUiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyI+CjxwYXRoIGQ9Ik05IDQuMzc0ODVMLTcuOTAxNTdlLTA3IDEwTDIuMDc2OTIgLTMuMDI2MTdlLTA3TDkgNC4zNzQ4NVoiIGZpbGw9IiMxRTFFMUUiLz4KPC9zdmc+");
  background-repeat: no-repeat;
  background-position: right 1.25rem center;
  background-size: 9px auto;
  padding: 0.875rem 3rem 0.875rem 1.5rem;
  border-radius: 9999px;
  border: 1px solid rgba(0, 0, 0, 0.08);
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.06);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), border-color var(--transition-fast), color var(--transition-fast);
}

.bt-link:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.12);
  border-color: var(--color-primary);
  color: var(--color-primary);
}

/* ==========================================================================
   3. SPEAKERS Section
   ========================================================================== */
.speakers-section {
  background: var(--bg-white);
  padding-block: clamp(4rem, 6vw, 7.5rem);
  position: relative;
}

.p-speaker__title-wrap {
  margin-bottom: clamp(2.5rem, 5vw, 4.5rem);
  text-align: center;
}

.speaker-cards {
  display: flex;
  flex-direction: column;
  gap: clamp(2.5rem, 5vw, 4rem);
}

/* Session Card Container */
.session-card {
  position: relative;
}

/* Session Label Badge */
.session-label {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.6rem 1.75rem;
  border-radius: var(--radius-sm) var(--radius-sm) 0 0;
  color: var(--text-white);
  font-weight: 800;
  font-size: clamp(0.85rem, 0.8rem + 0.4vw, 1.05rem);
  letter-spacing: 0.5px;
  line-height: 1.2;
  box-shadow: 0 -2px 10px rgba(0, 142, 245, 0.08);
}

.session-label.is-keynote {
  background: var(--color-highlight);
  color: var(--text-main);
  border: 1px solid rgba(0, 0, 0, 0.08);
}

.session-label.is-session {
  background: var(--gradient-cta);
  color: var(--text-white);
}

.session-label__text {
  position: relative;
  z-index: 1;
}

/* Session Detail Card Body */
.session-detail {
  padding: clamp(1.5rem, 4vw, 3rem);
  background-color: var(--bg-white);
  border-radius: 0 var(--radius-md) var(--radius-md) var(--radius-md);
  box-shadow: var(--shadow-card);
  position: relative;
}

.session-detail.is-keynote {
  border: 3px solid transparent;
  border-image: linear-gradient(180deg, var(--color-highlight), var(--color-primary)) 1;
}

.session-detail.is-session {
  border: 3px solid transparent;
  border-image: linear-gradient(180deg, var(--color-primary), var(--color-accent)) 1;
}

.session-ttl {
  font-size: clamp(1.25rem, 1.1rem + 0.8vw, 1.65rem);
  font-weight: 800;
  line-height: 1.4;
  color: var(--text-main);
  margin-bottom: 1.25rem;
}

.session-overview {
  font-size: clamp(0.9375rem, 0.9rem + 0.25vw, 1rem);
  line-height: 1.75;
  color: var(--text-muted);
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 1.5rem;
  margin-bottom: 1.5rem;
}

/* Speaker Profile Block */
.speaker-block {
  display: flex;
  gap: clamp(1.25rem, 3vw, 2.25rem);
  align-items: flex-start;
}

.speaker-pic {
  flex-shrink: 0;
  width: clamp(100px, 18vw, 140px);
  height: clamp(100px, 18vw, 140px);
  border-radius: 50%;
  overflow: hidden;
  border: 3px solid var(--bg-white);
  box-shadow: 0 6px 20px rgba(0, 142, 245, 0.15);
  background: var(--bg-section);
}

.speaker-pic img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.speaker-detail {
  flex: 1;
  width: 100%;
}

.speaker-info {
  margin-bottom: 0.85rem;
}

@media (min-width: 769px) {
  .speaker-info {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.75rem 1.5rem;
  }

  .speaker-name {
    margin-bottom: 0;
    line-height: 1.4;
  }

  .speaker-role {
    line-height: 1.4;
    padding-top: 0.15rem;
  }
}

.speaker-name {
  font-size: clamp(1.15rem, 1.05rem + 0.5vw, 1.45rem);
  font-weight: 800;
  color: var(--text-main);
}

.speaker-role {
  font-size: clamp(0.875rem, 0.825rem + 0.25vw, 0.95rem);
  font-weight: 700;
  color: var(--color-primary);
  line-height: 1.5;
}

.speaker-profile {
  font-size: clamp(0.875rem, 0.825rem + 0.25vw, 0.95rem);
  color: var(--text-muted);
  line-height: 1.7;
  text-align: left;
}

/* ==========================================================================
   4. TIMETABLE Section
   ========================================================================== */
.timetable-section {
  background: var(--bg-sub);
  padding: 96px 0;
}

.p-timetable__title-wrap {
  margin-bottom: clamp(2rem, 4vw, 3.5rem);
  text-align: center;
}

.p-timetable__title-wrap .section-title {
  margin-bottom: 0.75rem;
}

.p-timetable__title-wrap .section-lead {
  margin-top: 0;
  margin-left: auto;
  margin-right: auto;
  text-align: center;
}

.timetable-scroll-note {
  display: none;
}

#timetable-content {
  width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  padding-bottom: 16px;
}

#timetable-content::-webkit-scrollbar {
  height: 6px;
}

#timetable-content::-webkit-scrollbar-track {
  background: #E2E8F0;
  border-radius: var(--radius-full);
}

#timetable-content::-webkit-scrollbar-thumb {
  background: var(--color-primary);
  border-radius: var(--radius-full);
}

.timetable-grid {
  display: grid;
  grid-template-columns: 80px repeat(4, minmax(230px, 1fr));
  gap: 14px;
  min-width: 1040px;
}

.time-col-header,
.track-header {
  border-radius: var(--radius-sm);
  padding: 16px 12px;
  text-align: center;
  font-size: 0.82rem;
  font-weight: 800;
  color: var(--text-white);
  letter-spacing: 0.5px;
  line-height: 1.4;
  box-shadow: var(--shadow-soft);
}

.time-col-header {
  background: var(--bg-white);
  border: 1px solid var(--border-color);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.85rem;
}

/* Track-specific Header Gradients */
.track-header--8f {
  background: var(--gradient-cta);
}

.track-header--8e {
  background: linear-gradient(135deg, #0284C7 0%, #059669 100%);
}

.track-header--8c {
  background: linear-gradient(135deg, var(--color-accent-purple) 0%, #00B7F3 100%);
}

.track-header--8b {
  background: linear-gradient(135deg, #EA580C 0%, #F59E0B 100%);
}

.time-slot-label {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  font-size: 0.80rem;
  font-weight: 800;
  color: var(--text-muted);
  background: var(--bg-white);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  line-height: 1.3;
  box-shadow: 0 2px 6px rgba(0, 142, 245, 0.02);
  padding: 8px 4px;
  white-space: nowrap;
}

.time-slot-label .time-divider::before {
  content: "|";
  display: block;
  line-height: 1;
  margin: 2px 0;
}

/* Track Badges (for mobile vertical timetable) */
.session-card-tags {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
  margin-bottom: 8px;
}

.session-card-tags .session-tag {
  margin-bottom: 0;
}

.session-track-badge {
  display: none;
  font-size: 0.72rem;
  font-weight: 800;
  padding: 2px 8px;
  border-radius: 4px;
  color: var(--text-white);
  letter-spacing: 0.5px;
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.12);
  flex-shrink: 0;
}

.track-badge--8f {
  background: var(--gradient-cta);
}

.track-badge--8e {
  background: linear-gradient(135deg, #0284C7 0%, #059669 100%);
}

.track-badge--8c {
  background: linear-gradient(135deg, var(--color-accent-purple) 0%, #00B7F3 100%);
}

.track-badge--8b {
  background: linear-gradient(135deg, #EA580C 0%, #F59E0B 100%);
}

/* ─────────────────────────────────────────────────────────────
   Session Card & Click Affordance Design (C案: Floating Circle Button)
   ───────────────────────────────────────────────────────────── */
.session-cell {
  position: relative;
  background: var(--bg-white);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 16px 36px 16px 16px;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), border-color var(--transition-fast), background var(--transition-fast);
  cursor: pointer;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  min-height: 120px;
  box-shadow: 0 2px 8px rgba(0, 142, 245, 0.04);
  user-select: none;
}

.session-cell:hover {
  border-color: rgba(0, 142, 245, 0.45);
  background: linear-gradient(180deg, #FFFFFF 0%, #F5F9FD 100%);
  transform: translateY(-4px);
  box-shadow: 0 12px 24px -6px rgba(0, 142, 245, 0.16), 0 4px 10px rgba(0, 0, 0, 0.03);
}

.session-cell:active {
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(0, 142, 245, 0.12);
}

.session-cell:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
  box-shadow: 0 0 0 4px rgba(0, 142, 245, 0.18);
}

/* Floating Circle Action Button (右上アイコンボタン ＋) */
.session-cell__circle-btn {
  position: absolute;
  top: 14px;
  right: 14px;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: rgba(0, 142, 245, 0.07);
  border: 1px solid rgba(0, 142, 245, 0.20);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform var(--transition-fast), background var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast), box-shadow var(--transition-fast);
  box-shadow: 0 2px 6px rgba(0, 142, 245, 0.06);
  pointer-events: none;
}

.session-cell__circle-icon {
  display: block;
  width: 14px;
  height: 14px;
  transition: transform var(--transition-fast);
}

/* Hover Interaction: Circle Button Transforms with Gradient Glow & Plus Rotates */
.session-cell:hover .session-cell__circle-btn {
  background: var(--gradient-cta);
  color: #FFFFFF;
  border-color: transparent;
  transform: scale(1.12);
  box-shadow: 0 4px 12px rgba(0, 142, 245, 0.38);
}

.session-cell:hover .session-cell__circle-icon {
  transform: rotate(90deg);
}

.session-tag {
  font-size: 0.75rem;
  font-weight: 800;
  padding: 3px 9px;
  border-radius: var(--radius-full);
  display: inline-block;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  margin-bottom: 8px;
}

.session-tag.keynote-tag {
  color: #B45309;
  background: rgba(245, 158, 11, 0.12);
  border: 1px solid rgba(245, 158, 11, 0.25);
}

.session-tag.special-tag {
  color: #DB2777;
  background: rgba(244, 62, 187, 0.10);
  border: 1px solid rgba(244, 62, 187, 0.20);
}

.session-tag.ms-tag,
.session-tag.breakout-tag,
.session-tag.cloud-tag {
  color: var(--color-primary);
  background: rgba(0, 142, 245, 0.10);
  border: 1px solid rgba(0, 142, 245, 0.20);
}

.session-tag.ai-tag {
  color: var(--color-accent-purple);
  background: rgba(139, 92, 246, 0.10);
  border: 1px solid rgba(139, 92, 246, 0.20);
}

.session-tag.security-tag {
  color: #047857;
  background: rgba(16, 185, 129, 0.10);
  border: 1px solid rgba(16, 185, 129, 0.20);
}

.session-tag.limited-tag {
  color: #C2410C;
  background: rgba(234, 88, 12, 0.10);
  border: 1px solid rgba(234, 88, 12, 0.25);
}

.session-name {
  font-size: clamp(0.9375rem, 0.9rem + 0.2vw, 0.95rem);
  font-weight: 700;
  line-height: 1.4;
  margin-bottom: 10px;
  color: var(--text-main);
}

.session-speakers {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-top: 12px;
  min-height: 140px;
}

.session-speaker {
  font-size: clamp(0.875rem, 0.85rem + 0.2vw, 0.9375rem);
  color: var(--text-main);
  display: flex;
  align-items: center;
  gap: 14px;
  margin-top: 12px;
}

/* 登壇者が1名のセッションの場合は、2人目のエリアのスペースを空ける (gap:12px + avatar:64px) */
.session-cell > .session-speaker {
  margin-bottom: 76px;
}

.session-speakers .session-speaker {
  margin-top: 0;
  gap: 14px;
}

.session-speaker__avatar {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  overflow: hidden;
  flex-shrink: 0;
  border: 2px solid var(--border-color);
  background: var(--bg-section);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.08);
}

.session-speaker__avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.session-speaker__name {
  font-weight: 700;
  line-height: 1.4;
  color: var(--text-main);
}

/* Break / Intermission Row */
.timetable-break {
  grid-column: 2 / 6;
  background: var(--bg-white);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 12px 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--text-main);
  letter-spacing: 1px;
  box-shadow: 0 2px 6px rgba(0, 142, 245, 0.02);
}

/* Empty Timetable Cell */
.timetable-cell-empty {
  background: rgba(247, 249, 252, 0.6);
  border: 1px dashed var(--border-color);
  border-radius: var(--radius-sm);
  min-height: 110px;
}

/* ==========================================================================
   5. SUMMARY Section (Overview)
   ========================================================================== */
.summary-section {
  background: var(--bg-section);
}

.p-summary__title-wrap {
  margin-bottom: clamp(2.5rem, 5vw, 4rem);
  text-align: center;
}

.event-summary-box {
  max-width: 760px;
  margin: 0 auto;
  background: var(--bg-white);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-card);
}

.event-row {
  display: grid;
  grid-template-columns: 160px 1fr;
  border-bottom: 1px solid var(--border-color);
}

.event-row:last-child {
  border-bottom: none;
}

.event-label {
  background: var(--bg-section);
  padding: 18px 20px;
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--color-primary);
  display: flex;
  align-items: center;
  gap: 8px;
}

.event-content {
  padding: 18px 24px;
  font-size: clamp(0.9375rem, 0.9rem + 0.25vw, 1rem);
  color: var(--text-main);
  line-height: 1.6;
  display: flex;
  align-items: center;
}


/* ==========================================================================
   6. ACCESS Section
   ========================================================================== */
.access-section {
  background: var(--bg-white);
}

.p-access__title-wrap {
  margin-bottom: clamp(2.5rem, 5vw, 4rem);
  text-align: center;
}

.access-grid {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 48px;
  align-items: start;
}

.access-info h3 {
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--text-main);
  margin-bottom: 8px;
}

.access-address {
  font-size: 0.9375rem;
  color: var(--text-muted);
  margin-bottom: 24px;
  line-height: 1.7;
}

.access-stations {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.access-stations li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 0.90rem;
  color: var(--text-main);
  line-height: 1.6;
}

.station-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  padding: 3px 10px;
  min-width: 52px;
  height: 24px;
  border-radius: 4px;
  font-size: 0.72rem;
  font-weight: 700;
  line-height: 1;
  color: #ffffff;
  white-space: nowrap;
  margin-top: 2px;
  letter-spacing: 0.5px;
}

.station-icon.toei {
  background: #009f44;
}

.station-icon.metro {
  background: #0079c2;
}

.access-map {
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-card);
}

.access-map iframe {
  width: 100%;
  height: 340px;
  display: block;
  border: none;
}

/* ==========================================================================
   7. SPONSOR Section
   ========================================================================== */
.sponsor-section {
  background: var(--bg-section);
}

.p-sponsor__title-wrap {
  margin-bottom: clamp(2.5rem, 5vw, 4rem);
  text-align: center;
}

.sponsor-wrap {
  display: flex;
  justify-content: center;
  align-items: center;
}

.sponsor-logo-card {
  background: var(--bg-white);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-card);
  display: flex;
  align-items: center;
  justify-content: center;
}

.sponsor-logo-card.is-single {
  width: min(100%, 720px);
  min-height: 200px;
  padding: clamp(28px, 5vw, 48px) clamp(32px, 6vw, 64px);
}

.sponsor-logo-card img {
  max-height: clamp(80px, 14vw, 150px);
  max-width: 100%;
  width: auto;
  height: auto;
  object-fit: contain;
  filter: none;
  display: block;
}

/* ==========================================================================
   8. ENTRY Section
   ========================================================================== */
.entry-section {
  background: var(--gradient-primary);
  position: relative;
  overflow: hidden;
  padding: 88px 0;
}

.entry-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 70% 60% at 80% 30%, rgba(92, 205, 248, 0.20) 0%, transparent 55%),
    radial-gradient(ellipse 50% 50% at 10% 80%, rgba(244, 62, 187, 0.15) 0%, transparent 50%);
  pointer-events: none;
}

.entry-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  position: relative;
  z-index: 1;
}

.entry-content .section-title {
  margin-bottom: clamp(2rem, 4vw, 3rem);
}

.entry-heading {
  font-size: clamp(1.6rem, 3.2vw, 2.5rem);
  font-weight: 800;
  color: #ffffff;
  letter-spacing: -0.5px;
  margin-bottom: 18px;
  line-height: 1.35;
  text-align: center;
}

.entry-sub {
  font-size: 1.05rem;
  color: rgba(255, 255, 255, 0.90);
  margin-bottom: 40px;
  line-height: 1.7;
  text-align: left;
  max-width: 580px;
  width: fit-content;
}

.btn-entry-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  background: #ffffff;
  color: var(--color-primary);
  font-size: 1.1rem;
  font-weight: 800;
  padding: 18px 48px;
  border-radius: var(--radius-full);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), color var(--transition-fast);
  letter-spacing: 0.3px;
  margin: 0 auto;
}

.btn-entry-primary:hover {
  transform: translateY(-3px);
  color: var(--color-accent);
  box-shadow: 0 14px 40px rgba(0, 0, 0, 0.22);
}

.entry-note {
  margin-top: 18px;
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.80);
}

/* ==========================================================================
   9. FOOTER & Contact
   ========================================================================== */
.l-footer {
  background-color: var(--bg-section);
  color: var(--text-main);
  position: relative;
}

.l-footer::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: var(--gradient-primary);
}

.l-footer__logo {
  margin: 0 auto;
  text-align: center;
}

.l-footer__logo img {
  width: 100%;
  height: auto;
  display: block;
  margin: 0 auto;
}

#contact {
  text-align: center;
  margin: 0 auto 50px;
}

.l-footer__contact-ttl {
  font-weight: 700;
  margin-bottom: 16px;
  font-size: 13px;
  color: var(--text-dim);
  letter-spacing: 0.1em;
}

.l-footer__contact-office {
  font-weight: 600;
  margin-bottom: 12px;
  color: var(--text-main);
}

.l-footer__contact-info {
  display: flex;
  justify-content: center;
  font-size: 15px;
  color: var(--text-muted);
}

.l-footer__contact-info a {
  color: var(--color-primary);
  text-decoration: none;
  font-weight: 600;
  transition: opacity var(--transition-fast), text-decoration var(--transition-fast);
}

.l-footer__contact-info a:hover {
  text-decoration: underline;
  opacity: 0.75;
}

.l-footer__copyright {
  text-align: center;
  color: var(--text-dim);
}

.l-footer__copyright small {
  font-size: 12px;
  font-family: 'Inter', sans-serif;
  letter-spacing: 0.05em;
}

/* ==========================================================================
   Modal Window
   ========================================================================== */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.55);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-fast);
  padding: 24px;
}

.modal-backdrop.active {
  opacity: 1;
  pointer-events: auto;
}

.modal-card {
  background: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  max-width: 600px;
  width: 100%;
  padding: 36px;
  position: relative;
  box-shadow: var(--shadow-strong);
  transform: translateY(24px) scale(0.97);
  transition: transform var(--transition-normal);
  color: var(--text-main);
}

.modal-backdrop.active .modal-card {
  transform: translateY(0) scale(1);
}

.modal-close-btn {
  position: absolute;
  top: 18px;
  right: 18px;
  background: #f1f5f9;
  border: none;
  color: var(--text-main);
  width: 36px;
  height: 36px;
  border-radius: 50%;
  cursor: pointer;
  font-size: 1.2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--transition-fast);
}

.modal-close-btn:hover {
  background: #e2e8f0;
}

.modal-tag,
.keynote-badge {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 800;
  padding: 4px 12px;
  border-radius: var(--radius-full);
  margin-bottom: 18px;
  text-transform: uppercase;
  letter-spacing: 0.8px;
}

.modal-title {
  font-size: 1.3rem;
  margin-bottom: 12px;
  font-weight: 800;
  line-height: 1.35;
}

.modal-desc {
  color: var(--text-muted);
  line-height: 1.85;
  font-size: 0.92rem;
  margin-bottom: 16px;
}

.modal-speaker {
  font-weight: 700;
  color: var(--color-primary);
  font-size: 0.90rem;
}

.modal-footer {
  margin-top: 24px;
  text-align: right;
}

.btn-secondary-lg {
  background: #f1f5f9;
  border: 1px solid var(--border-color);
  color: var(--text-main);
  font-size: 0.90rem;
  font-weight: 600;
  padding: 10px 24px;
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: background var(--transition-fast), border-color var(--transition-fast), color var(--transition-fast);
}

.btn-secondary-lg:hover {
  background: #e2e8f0;
  border-color: var(--color-primary);
  color: var(--color-primary);
}

/* ==========================================================================
   CSS Icons (Lightweight SVG Mask Icons)
   ========================================================================== */
.icon-enter,
.icon-scroll-x {
  display: inline-block;
  width: 1em;
  height: 1em;
  background-color: currentColor;
  -webkit-mask-size: contain;
  mask-size: contain;
  -webkit-mask-repeat: no-repeat;
  mask-repeat: no-repeat;
  -webkit-mask-position: center;
  mask-position: center;
  vertical-align: -0.125em;
  flex-shrink: 0;
}

.icon-enter {
  -webkit-mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 512 512'%3E%3Cpath fill='%23000' d='M217.9 105.9L340.7 228.7c7.2 7.2 11.3 17.1 11.3 27.3s-4.1 20.1-11.3 27.3L217.9 406.1c-6.4 6.4-15 9.9-24 9.9c-18.7 0-33.9-15.2-33.9-33.9l0-62.1L32 320c-17.7 0-32-14.3-32-32l0-64c0-17.7 14.3-32 32-32l128 0 0-62.1c0-18.7 15.2-33.9 33.9-33.9c9 0 17.6 3.6 24 9.9zM352 416l64 0c17.7 0 32-14.3 32-32l0-256c0-17.7-14.3-32-32-32l-64 0c-17.7 0-32-14.3-32-32s14.3-32 32-32l64 0c53 0 96 43 96 96l0 256c0 53-43 96-96 96l-64 0c-17.7 0-32-14.3-32-32s14.3-32 32-32z'/%3E%3C/svg%3E");
  mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 512 512'%3E%3Cpath fill='%23000' d='M217.9 105.9L340.7 228.7c7.2 7.2 11.3 17.1 11.3 27.3s-4.1 20.1-11.3 27.3L217.9 406.1c-6.4 6.4-15 9.9-24 9.9c-18.7 0-33.9-15.2-33.9-33.9l0-62.1L32 320c-17.7 0-32-14.3-32-32l0-64c0-17.7 14.3-32 32-32l128 0 0-62.1c0-18.7 15.2-33.9 33.9-33.9c9 0 17.6 3.6 24 9.9zM352 416l64 0c17.7 0 32-14.3 32-32l0-256c0-17.7-14.3-32-32-32l-64 0c-17.7 0-32-14.3-32-32s14.3-32 32-32l64 0c53 0 96 43 96 96l0 256c0 53-43 96-96 96l-64 0c-17.7 0-32-14.3-32-32s14.3-32 32-32z'/%3E%3C/svg%3E");
}

.icon-scroll-x {
  -webkit-mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 512 512'%3E%3Cpath fill='%23000' d='M504.3 273.6c4.9-4.5 7.7-10.9 7.7-17.6s-2.8-13-7.7-17.6l-112-104c-7-6.5-17.2-8.2-25.9-4.4S352 141.8 352 151.4l0 40.6-192 0 0-40.6c0-9.6-5.7-18.2-14.4-22s-18.9-2.1-25.9 4.4l-112 104C2.8 243 0 249.4 0 256s2.8 13 7.7 17.6l112 104c7 6.5 17.2 8.2 25.9 4.4s14.4-12.4 14.4-22l0-40.6 192 0 0 40.6c0 9.6 5.7 18.2 14.4 22s18.9 2.1 25.9-4.4l112-104z'/%3E%3C/svg%3E");
  mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 512 512'%3E%3Cpath fill='%23000' d='M504.3 273.6c4.9-4.5 7.7-10.9 7.7-17.6s-2.8-13-7.7-17.6l-112-104c-7-6.5-17.2-8.2-25.9-4.4S352 141.8 352 151.4l0 40.6-192 0 0-40.6c0-9.6-5.7-18.2-14.4-22s-18.9-2.1-25.9 4.4l-112 104C2.8 243 0 249.4 0 256s2.8 13 7.7 17.6l112 104c7 6.5 17.2 8.2 25.9 4.4s14.4-12.4 14.4-22l0-40.6 192 0 0 40.6c0 9.6 5.7 18.2 14.4 22s18.9 2.1 25.9-4.4l112-104z'/%3E%3C/svg%3E");
}

/* ==========================================================================
   Responsive Styles
   ========================================================================== */
@media screen and (min-width: 769px) {
  .l-footer {
    padding: 80px 40px 30px;
  }

  .l-footer__logo {
    max-width: 220px;
    margin-bottom: 60px;
  }
}

@media screen and (max-width: 768px) {
  :root {
    --header-h: 60px;
  }

  /* Header */
  .header-inner {
    padding: 0 16px;
  }

  .header-logo-img {
    height: 20px;
  }

  .header-nav {
    display: none;
  }

  .header-cta {
    margin-left: auto;
    margin-right: 12px;
  }

  .hamburger {
    display: flex;
  }

  /* Hero */
  #hero,
  .hero-section {
    min-height: 420px;
  }

  .hero-inner {
    padding: 10px 20px 60px;
  }

  .btn-cta,
  .btn-hero-primary {
    padding: 14px 28px;
    font-size: 0.95rem;
    width: auto;
    max-width: 100%;
  }

  /* Section Title */
  .section-title {
    padding-top: 1.25rem;
  }

  .section-title__num {
    top: -1rem;
    left: -1.5rem;
    font-size: clamp(3.5rem, 2.5rem + 4vw, 5rem);
  }

  /* About */
  .p-about__archive-links {
    flex-direction: column;
    gap: 1rem;
  }

  /* Speaker Block */
  .speaker-block {
    flex-direction: column;
    align-items: center;
    text-align: center;
  }

  /* Timetable: Mobile Vertical Timeline Layout */
  .timetable-scroll-note {
    display: none !important;
  }

  #timetable-content {
    overflow-x: visible;
    padding-bottom: 0;
  }

  .timetable-grid {
    display: flex;
    flex-direction: column;
    min-width: 0;
    gap: 12px;
  }

  .time-col-header,
  .track-header,
  .timetable-cell-empty,
  .timetable-break,
  .time-slot-break {
    display: none;
  }

  .time-slot-label {
    flex-direction: row;
    align-items: center;
    justify-content: flex-start;
    gap: 6px;
    padding: 10px 16px;
    margin-top: 24px;
    margin-bottom: 4px;
    background: linear-gradient(135deg, #F0F7FF 0%, #E2EEFC 100%);
    border: 1px solid #BFDBFE;
    border-left: 4px solid var(--color-primary);
    border-radius: var(--radius-sm);
    font-size: 0.95rem;
    font-weight: 800;
    color: var(--color-primary);
    box-shadow: 0 2px 6px rgba(0, 142, 245, 0.05);
    white-space: normal;
  }

  .time-slot-label:first-of-type,
  .timetable-break + .time-slot-label {
    margin-top: 0;
  }

  .time-slot-label::before {
    content: "⏱";
    font-size: 0.95rem;
    margin-right: 2px;
  }

  .time-slot-label .time-divider::before {
    content: "–";
    display: inline;
    margin: 0 4px;
  }

  .session-track-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
  }

  .session-cell {
    min-height: auto;
    padding: 14px 38px 14px 14px;
  }

  .session-cell > .session-speaker {
    margin-bottom: 0;
  }

  .session-speakers {
    min-height: auto;
    gap: 10px;
    margin-top: 10px;
  }

  .session-speaker {
    margin-top: 10px;
    font-size: 0.88rem;
  }

  .session-speaker__avatar {
    width: 52px;
    height: 52px;
  }

  /* Summary */
  .event-row {
    grid-template-columns: 1fr;
  }

  .event-label {
    border-bottom: 1px solid var(--border-color);
  }

  /* Access */
  .access-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .access-map iframe {
    height: 260px;
  }

  /* Sticky CTA (SP: 画面下部フローティングバー) */
  .sticky-cta-container {
    bottom: 12px;
    right: 12px;
    left: 12px;
    width: auto;
    max-width: 440px;
    margin: 0 auto;
    align-items: center;
  }

  .sticky-cta-badge {
    font-size: 0.68rem;
    padding: 3px 12px;
    margin-bottom: -7px;
  }

  .btn-floating-cta {
    /*width: 100%;*/
    justify-content: space-between;
    /*padding: 10px 18px;*/
      padding: 2% 20%;
    gap: 12px;
    border-radius: var(--radius-full);
  }

  .btn-floating-cta-main {
    font-size: 0.96rem;
  }


  .btn-floating-cta-arrow {
    width: 28px;
    height: 28px;
    font-size: 0.85rem;
  }

  /* Footer */
  .l-footer {
    padding: 60px 20px 40px;
  }

  .l-footer__logo {
    max-width: 200px;
    margin-bottom: 40px;
  }
    
    .display-none-sp{
    	display:none;
    }
    
    .header-cta{
    	display:none;
    }
}

@media (max-width: 480px) {
  .header-logo-img {
    height: 18px;
  }

  .header-cta .btn-cta-mini {
    padding: 7px 14px;
    font-size: 0.80rem;
  }

  .section-pad {
    padding: 64px 0;
  }

  .section-pad-sm {
    padding: 48px 0;
  }
}

.access_btn{
	margin-bottom:30px;
}

@media screen and (max-width: 768px) {
  .access_btn a{
    width: 100%;
    padding: 3% 25%;
    }
}