/* ============================================
   いじめ防止プロジェクト「つなげる心」
   Modern single-page design
   ============================================ */

:root {
  /* Brand — 緑を基調に、温かみのあるコーラルをアクセントに */
  --ibpj-primary: #059669;
  --ibpj-primary-dark: #047857;
  --ibpj-primary-light: #ecfdf5;
  --ibpj-primary-soft: rgba(5, 150, 105, 0.08);

  /* "心" warmth accent — 人のあたたかさを表す温色 */
  --ibpj-accent: #f97066;
  --ibpj-accent-dark: #e75a50;
  --ibpj-accent-light: #fff1ef;
  --ibpj-accent-soft: rgba(249, 112, 102, 0.08);

  /* Neutrals */
  --ibpj-ink: #0b1220;
  --ibpj-text: #1f2937;
  --ibpj-text-2: #4b5563;
  --ibpj-text-3: #6b7280;
  --ibpj-muted: #9ca3af;
  --ibpj-line: #d6dde5;
  --ibpj-line-strong: #b8c2ce;
  --ibpj-line-soft: #e8ecf0;
  --ibpj-bg: #ffffff;
  --ibpj-bg-tint: #eef2f0;
  --ibpj-bg-cream: #f5f1ea;

  /* Shadows — clearer definition */
  --ibpj-shadow-xs: 0 1px 2px rgba(11, 18, 32, 0.05);
  --ibpj-shadow-sm: 0 2px 4px rgba(11, 18, 32, 0.07), 0 1px 2px rgba(11, 18, 32, 0.04);
  --ibpj-shadow-md: 0 6px 16px rgba(11, 18, 32, 0.1), 0 2px 4px rgba(11, 18, 32, 0.05);
  --ibpj-shadow-lg: 0 14px 32px rgba(11, 18, 32, 0.12), 0 4px 8px rgba(11, 18, 32, 0.06);

  /* Radius */
  --ibpj-r-sm: 8px;
  --ibpj-r: 12px;
  --ibpj-r-lg: 16px;
  --ibpj-r-xl: 20px;
  --ibpj-r-pill: 9999px;

  /* Layout */
  --ibpj-max: 1120px;
  --ibpj-header-h: 64px;

  /* Font */
  --ibpj-font: "Inter", "Zen Kaku Gothic New", -apple-system, BlinkMacSystemFont,
    "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Yu Gothic UI", "Yu Gothic", "Meiryo", sans-serif;
  --ibpj-font-display: "Zen Kaku Gothic New", "Inter", -apple-system, BlinkMacSystemFont, sans-serif;
  --ibpj-ease: cubic-bezier(0.4, 0, 0.2, 1);
  color-scheme: light;
}

* , *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  font-size: 16px;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--ibpj-header-h) + 16px);
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--ibpj-font);
  color: var(--ibpj-text);
  background: var(--ibpj-bg);
  line-height: 1.8;
  letter-spacing: 0.01em;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  font-feature-settings: "palt" 1, "kern" 1, "liga" 1;
  font-kerning: normal;
  overflow-x: hidden;
}

img { max-width: 100%; height: auto; display: block; }
a { color: var(--ibpj-primary); text-decoration: none; transition: color 0.2s var(--ibpj-ease); }
button { font-family: inherit; cursor: pointer; background: none; border: none; color: inherit; }
ul, ol { list-style: none; }

:where(a, button, [tabindex]):focus-visible {
  outline: 3px solid var(--ibpj-primary);
  outline-offset: 3px;
  border-radius: var(--ibpj-r-sm);
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* ============================================
   HEADER
   ============================================ */
.ibpj-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid var(--ibpj-line);
  box-shadow: var(--ibpj-shadow-sm);
}
.ibpj-header-inner {
  max-width: var(--ibpj-max);
  margin: 0 auto;
  padding: 0 24px;
  height: var(--ibpj-header-h);
  display: flex; align-items: center; justify-content: space-between;
  gap: 16px;
}
.ibpj-brand {
  display: flex; align-items: center; gap: 10px;
  color: var(--ibpj-ink);
}
.ibpj-brand-mark {
  width: 36px; height: 36px;
  display: inline-flex; align-items: center; justify-content: center;
  color: #fff;
  background: linear-gradient(135deg, var(--ibpj-primary) 0%, var(--ibpj-accent) 120%);
  border-radius: 12px;
}
.ibpj-brand-mark svg { width: 20px; height: 20px; }
.ibpj-brand-text { display: flex; flex-direction: column; line-height: 1.2; }
.ibpj-brand-text strong { font-size: 1rem; font-weight: 700; letter-spacing: -0.01em; }
.ibpj-brand-text small { font-size: 0.7rem; color: var(--ibpj-text-3); }

.ibpj-nav {
  display: none;
  gap: 6px;
  margin-left: auto;
}
.ibpj-nav a {
  padding: 8px 14px;
  font-size: 0.92rem;
  color: var(--ibpj-text-2);
  border-radius: var(--ibpj-r-sm);
  transition: all 0.2s var(--ibpj-ease);
  font-weight: 500;
}
.ibpj-nav a:hover { color: var(--ibpj-primary); background: var(--ibpj-primary-soft); }

.ibpj-back-link {
  display: none;
  align-items: center;
  gap: 6px;
  padding: 8px 14px;
  font-size: 0.85rem;
  color: var(--ibpj-text-2);
  border: 1px solid var(--ibpj-line);
  border-radius: var(--ibpj-r-pill);
  transition: all 0.2s var(--ibpj-ease);
}
.ibpj-back-link:hover { border-color: var(--ibpj-primary); color: var(--ibpj-primary); }
.ibpj-back-link svg { width: 14px; height: 14px; }

.ibpj-nav-toggle {
  width: 40px; height: 40px;
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  gap: 5px;
  border-radius: var(--ibpj-r-sm);
  transition: background 0.2s var(--ibpj-ease);
}
.ibpj-nav-toggle:hover { background: var(--ibpj-line-soft); }
.ibpj-nav-toggle span {
  display: block; width: 20px; height: 2px;
  background: var(--ibpj-text);
  border-radius: 2px;
  transition: all 0.3s var(--ibpj-ease);
}
.ibpj-nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.ibpj-nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.ibpj-nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

.ibpj-nav-mobile {
  position: fixed;
  top: var(--ibpj-header-h);
  left: 0; right: 0;
  background: #fff;
  border-bottom: 1px solid var(--ibpj-line);
  padding: 12px 24px 24px;
  display: flex; flex-direction: column; gap: 4px;
  transform: translateY(-8px); opacity: 0; pointer-events: none;
  transition: transform 0.25s var(--ibpj-ease), opacity 0.25s var(--ibpj-ease);
  z-index: 99;
  max-height: calc(100vh - var(--ibpj-header-h));
  overflow-y: auto;
}
.ibpj-nav-mobile.open { transform: translateY(0); opacity: 1; pointer-events: auto; }
.ibpj-nav-mobile a {
  padding: 14px 12px;
  font-size: 1rem;
  color: var(--ibpj-text);
  font-weight: 500;
  border-bottom: 1px solid var(--ibpj-line-soft);
}
.ibpj-nav-mobile a:last-child {
  color: var(--ibpj-primary);
  border-bottom: none;
  margin-top: 4px;
}

/* ============================================
   HERO
   ============================================ */
.ibpj-hero {
  position: relative;
  padding: 80px 24px 96px;
  background: linear-gradient(180deg, #e8f5ee 0%, #f5f1ea 60%, #ffffff 100%);
  overflow: hidden;
  text-align: left;
  border-bottom: 1px solid var(--ibpj-line);
}
.ibpj-hero-bg { position: absolute; inset: 0; overflow: hidden; pointer-events: none; z-index: 0; }
.ibpj-hero-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(50px);
  opacity: 0.45;
}
.ibpj-hero-orb.orb-1 {
  width: 420px; height: 420px;
  top: -120px; left: -100px;
  background: radial-gradient(circle, rgba(5,150,105,0.35), transparent 60%);
}
.ibpj-hero-orb.orb-2 {
  width: 360px; height: 360px;
  top: 40%; right: -100px;
  background: radial-gradient(circle, rgba(249,112,102,0.3), transparent 60%);
}
.ibpj-hero-orb.orb-3 {
  width: 300px; height: 300px;
  bottom: -80px; left: 30%;
  background: radial-gradient(circle, rgba(5,150,105,0.18), transparent 60%);
}
.ibpj-hero-inner {
  position: relative;
  max-width: var(--ibpj-max);
  margin: 0 auto;
  z-index: 1;
}
.ibpj-hero-eyebrow {
  display: inline-block;
  padding: 6px 16px;
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--ibpj-primary);
  background: var(--ibpj-primary-soft);
  border: 1px solid var(--ibpj-primary-soft);
  border-radius: var(--ibpj-r-pill);
  margin-bottom: 24px;
  letter-spacing: 0.03em;
}
.ibpj-hero-title {
  font-family: var(--ibpj-font-display);
  font-size: clamp(2rem, 5.5vw, 3.75rem);
  font-weight: 900;
  line-height: 1.25;
  letter-spacing: -0.035em;
  color: var(--ibpj-ink);
  margin-bottom: 20px;
}
.ibpj-accent {
  background: linear-gradient(135deg, var(--ibpj-primary) 0%, var(--ibpj-accent) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}
.ibpj-hero-lead {
  font-size: clamp(1rem, 1.6vw, 1.15rem);
  color: var(--ibpj-text-2);
  line-height: 1.9;
  max-width: 640px;
  margin-bottom: 36px;
}
.ibpj-hero-meta {
  display: flex; flex-wrap: wrap; gap: 16px;
  margin-bottom: 36px;
}
.ibpj-hero-meta-item {
  display: inline-flex; align-items: center; gap: 12px;
  padding: 14px 20px;
  background: #fff;
  border: 1px solid var(--ibpj-line);
  border-radius: var(--ibpj-r);
  box-shadow: var(--ibpj-shadow-md);
}
.ibpj-hero-meta-item svg {
  width: 22px; height: 22px; flex-shrink: 0;
  color: var(--ibpj-primary);
}
.ibpj-hero-meta-item .label {
  display: block; font-size: 0.75rem;
  color: var(--ibpj-text-3);
  margin-bottom: 2px;
}
.ibpj-hero-meta-item strong {
  display: block; font-size: 0.95rem;
  font-weight: 700;
  color: var(--ibpj-ink);
  letter-spacing: -0.01em;
}
.ibpj-hero-cta { display: flex; flex-wrap: wrap; gap: 12px; }

/* ============================================
   BUTTONS
   ============================================ */
.ibpj-btn {
  display: inline-flex; align-items: center; justify-content: center;
  gap: 10px;
  padding: 14px 28px;
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  border-radius: var(--ibpj-r);
  transition: all 0.2s var(--ibpj-ease);
  min-height: 48px;
  border: 1.5px solid transparent;
}
.ibpj-btn svg { width: 18px; height: 18px; }
.ibpj-btn-primary {
  background: var(--ibpj-primary); color: #fff;
}
.ibpj-btn-primary:hover { background: var(--ibpj-primary-dark); transform: translateY(-1px); box-shadow: var(--ibpj-shadow-md); }
.ibpj-btn-outline {
  background: #fff; color: var(--ibpj-primary);
  border-color: var(--ibpj-primary);
}
.ibpj-btn-outline:hover { background: var(--ibpj-primary-light); }

.ibpj-link-arrow {
  display: inline-flex; align-items: center; gap: 6px;
  font-weight: 500;
  color: var(--ibpj-primary);
  transition: gap 0.2s var(--ibpj-ease);
}
.ibpj-link-arrow:hover { gap: 10px; }
.ibpj-link-arrow svg { width: 16px; height: 16px; }

/* ============================================
   SECTION
   ============================================ */
.ibpj-section {
  padding: 80px 24px;
  position: relative;
}
.ibpj-section--tinted {
  background: var(--ibpj-bg-tint);
  box-shadow: inset 0 1px 0 rgba(11,18,32,0.06), inset 0 -1px 0 rgba(11,18,32,0.06);
}
.ibpj-section--cream {
  background: var(--ibpj-bg-cream);
  box-shadow: inset 0 1px 0 rgba(11,18,32,0.06), inset 0 -1px 0 rgba(11,18,32,0.06);
}
.ibpj-section + .ibpj-section:not(.ibpj-section--tinted):not(.ibpj-section--cream) {
  border-top: 1px solid var(--ibpj-line);
}

.ibpj-container {
  max-width: var(--ibpj-max);
  margin: 0 auto;
}

.ibpj-section-head {
  margin-bottom: 48px;
  position: relative;
}
.ibpj-section-num {
  display: inline-block;
  font-family: "Inter", sans-serif;
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--ibpj-primary);
  background: var(--ibpj-primary-soft);
  padding: 4px 12px;
  border-radius: var(--ibpj-r-pill);
  margin-bottom: 12px;
  letter-spacing: 0.05em;
}
.ibpj-section-label {
  display: block;
  font-family: "Inter", sans-serif;
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  color: var(--ibpj-text-3);
  margin-bottom: 8px;
  text-transform: uppercase;
}
.ibpj-section-head h2 {
  font-family: var(--ibpj-font-display);
  font-size: clamp(1.6rem, 3.5vw, 2.25rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  color: var(--ibpj-ink);
  line-height: 1.3;
}
.ibpj-section-head p {
  margin-top: 12px;
  color: var(--ibpj-text-2);
  font-size: 1rem;
}

/* ============================================
   VISION
   ============================================ */
.ibpj-vision-lead {
  font-size: clamp(1.1rem, 2vw, 1.35rem);
  font-weight: 500;
  color: var(--ibpj-ink);
  line-height: 1.9;
  max-width: 780px;
  margin: 0 auto 48px;
  text-align: center;
  letter-spacing: -0.01em;
}
.ibpj-vision-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}
.ibpj-vision-card {
  background: #fff;
  border: 1px solid var(--ibpj-line);
  border-radius: var(--ibpj-r-lg);
  padding: 32px 28px;
  transition: all 0.25s var(--ibpj-ease);
  position: relative;
  overflow: hidden;
  box-shadow: var(--ibpj-shadow-sm);
}
.ibpj-vision-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--ibpj-primary), var(--ibpj-accent));
  opacity: 0;
  transition: opacity 0.25s var(--ibpj-ease);
}
.ibpj-vision-card:hover {
  border-color: var(--ibpj-primary);
  transform: translateY(-4px);
  box-shadow: var(--ibpj-shadow-lg);
}
.ibpj-vision-card:hover::before { opacity: 1; }
.ibpj-vision-num {
  font-family: "Inter", sans-serif;
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--ibpj-primary);
  line-height: 1;
  opacity: 0.5;
  margin-bottom: 12px;
}
.ibpj-vision-card h3 {
  font-family: var(--ibpj-font-display);
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--ibpj-ink);
  letter-spacing: -0.01em;
}
.ibpj-vision-card p {
  color: var(--ibpj-text-2);
  font-size: 0.95rem;
  line-height: 1.85;
}

/* ============================================
   INFO CARDS
   ============================================ */
.ibpj-info-cards {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  margin-bottom: 48px;
}
.ibpj-info-card {
  background: #fff;
  border: 1px solid var(--ibpj-line);
  border-radius: var(--ibpj-r-lg);
  padding: 28px;
  box-shadow: var(--ibpj-shadow-sm);
}
.ibpj-info-card h3 {
  font-family: var(--ibpj-font-display);
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 16px;
  color: var(--ibpj-ink);
  padding-bottom: 10px;
  border-bottom: 1px solid var(--ibpj-line);
}
.ibpj-info-card p { color: var(--ibpj-text-2); line-height: 1.85; margin-bottom: 12px; }

.ibpj-info-dl dt {
  font-size: 0.8rem;
  color: var(--ibpj-text-3);
  margin-top: 8px;
  font-weight: 500;
}
.ibpj-info-dl dt:first-child { margin-top: 0; }
.ibpj-info-dl dd {
  color: var(--ibpj-text);
  font-size: 0.95rem;
  font-weight: 500;
  padding-bottom: 10px;
  border-bottom: 1px dashed var(--ibpj-line-soft);
  line-height: 1.7;
}
.ibpj-info-dl dd:last-child { border-bottom: none; padding-bottom: 0; }

.ibpj-check-list li {
  position: relative;
  padding: 8px 0 8px 28px;
  color: var(--ibpj-text);
  font-size: 0.95rem;
  line-height: 1.7;
}
.ibpj-check-list li::before {
  content: '';
  position: absolute;
  left: 0; top: 12px;
  width: 18px; height: 18px;
  background: var(--ibpj-primary-soft);
  border-radius: 50%;
}
.ibpj-check-list li::after {
  content: '';
  position: absolute;
  left: 5px; top: 16px;
  width: 8px; height: 4px;
  border-left: 2px solid var(--ibpj-primary);
  border-bottom: 2px solid var(--ibpj-primary);
  transform: rotate(-45deg);
}

.ibpj-access {
  background: #fff;
  border: 1px solid var(--ibpj-line);
  border-radius: var(--ibpj-r-lg);
  padding: 28px;
  box-shadow: var(--ibpj-shadow-sm);
}
.ibpj-access h3 {
  font-family: var(--ibpj-font-display);
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 16px;
  color: var(--ibpj-ink);
}
.ibpj-access-figure {
  margin: 0 -28px 24px;
  overflow: hidden;
}
.ibpj-access-figure img { width: 100%; height: auto; }
.ibpj-access-links {
  display: flex; flex-wrap: wrap; gap: 10px;
}
.ibpj-access-links a {
  display: inline-flex; align-items: center;
  padding: 8px 16px;
  font-size: 0.85rem;
  color: var(--ibpj-text-2);
  border: 1px solid var(--ibpj-line);
  border-radius: var(--ibpj-r-pill);
  transition: all 0.2s var(--ibpj-ease);
}
.ibpj-access-links a::after {
  content: '↗'; margin-left: 6px; color: var(--ibpj-muted);
}
.ibpj-access-links a:hover { border-color: var(--ibpj-primary); color: var(--ibpj-primary); }

/* ============================================
   TIMELINE
   ============================================ */
.ibpj-timeline {
  position: relative;
  margin-bottom: 48px;
}
.ibpj-timeline::before {
  content: '';
  position: absolute;
  left: 18px; top: 8px; bottom: 8px;
  width: 2px;
  background: linear-gradient(180deg, var(--ibpj-primary), var(--ibpj-accent));
  opacity: 0.25;
}
.ibpj-timeline-item {
  position: relative;
  padding-left: 64px;
  padding-bottom: 32px;
}
.ibpj-timeline-item::before {
  content: '';
  position: absolute;
  left: 10px; top: 6px;
  width: 18px; height: 18px;
  background: #fff;
  border: 3px solid var(--ibpj-primary);
  border-radius: 50%;
  z-index: 1;
}
.ibpj-timeline-item:last-child { padding-bottom: 0; }

.ibpj-timeline-time {
  font-family: "Inter", sans-serif;
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--ibpj-primary);
  margin-bottom: 4px;
  letter-spacing: -0.01em;
  font-feature-settings: "tnum" 1;
}
.ibpj-timeline-time span { color: var(--ibpj-text-3); font-weight: 500; margin-left: 2px; }
.ibpj-timeline-body {
  background: #fff;
  border: 1px solid var(--ibpj-line);
  border-radius: var(--ibpj-r-lg);
  padding: 20px 24px;
  box-shadow: var(--ibpj-shadow-sm);
}
.ibpj-timeline-body--slim { padding: 14px 24px; }
.ibpj-timeline-body h3 {
  font-family: var(--ibpj-font-display);
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--ibpj-ink);
}
.ibpj-timeline-body--slim h3 { margin-bottom: 0; }
.ibpj-timeline-body p { color: var(--ibpj-text-2); font-size: 0.95rem; line-height: 1.85; }
.ibpj-timeline-body ul li {
  padding: 4px 0 4px 16px;
  position: relative;
  color: var(--ibpj-text);
  font-size: 0.92rem;
  line-height: 1.7;
}
.ibpj-timeline-body ul li::before {
  content: '';
  position: absolute;
  left: 0; top: 14px;
  width: 5px; height: 5px;
  background: var(--ibpj-primary);
  border-radius: 50%;
}

.ibpj-booths {
  margin-top: 40px;
  padding: 28px;
  background: #fff;
  border: 1px solid var(--ibpj-line);
  border-radius: var(--ibpj-r-lg);
  box-shadow: var(--ibpj-shadow-sm);
}
.ibpj-booths h3 {
  font-family: var(--ibpj-font-display);
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 16px;
  color: var(--ibpj-ink);
}
.ibpj-booth-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 8px;
}
.ibpj-booth-list li {
  padding: 12px 16px;
  background: var(--ibpj-bg-tint);
  border-radius: var(--ibpj-r-sm);
  font-size: 0.92rem;
  color: var(--ibpj-text);
  border-left: 3px solid var(--ibpj-primary);
}

/* ============================================
   SPEAKER
   ============================================ */
.ibpj-speaker {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
  background: #fff;
  border: 1px solid var(--ibpj-line);
  border-radius: var(--ibpj-r-xl);
  padding: 32px;
  box-shadow: var(--ibpj-shadow-md);
}
.ibpj-speaker-photo {
  aspect-ratio: 1;
  max-width: 280px;
  margin: 0 auto;
  border-radius: 50%;
  overflow: hidden;
  background: var(--ibpj-bg-tint);
  box-shadow: var(--ibpj-shadow-md);
  border: 4px solid #fff;
  outline: 2px solid var(--ibpj-primary-soft);
}
.ibpj-speaker-photo img { width: 100%; height: 100%; object-fit: cover; }

.ibpj-speaker-name h3 {
  font-family: var(--ibpj-font-display);
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--ibpj-ink);
  letter-spacing: -0.02em;
  margin-bottom: 4px;
}
.ibpj-speaker-name span {
  display: block;
  font-size: 0.9rem;
  color: var(--ibpj-text-3);
  letter-spacing: 0.05em;
  margin-bottom: 24px;
}
.ibpj-speaker-section { margin-bottom: 24px; }
.ibpj-speaker-section:last-child { margin-bottom: 0; }
.ibpj-speaker-section h4 {
  font-size: 0.8rem;
  color: var(--ibpj-primary);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 12px;
  padding-bottom: 6px;
  border-bottom: 1px solid var(--ibpj-line);
}
.ibpj-speaker-section ul li {
  padding: 4px 0 4px 20px;
  position: relative;
  font-size: 0.9rem;
  color: var(--ibpj-text-2);
  line-height: 1.75;
}
.ibpj-speaker-section ul li::before {
  content: '';
  position: absolute;
  left: 4px; top: 14px;
  width: 8px; height: 1px;
  background: var(--ibpj-primary);
}

/* ============================================
   ORGANIZERS & SPONSORS
   ============================================ */
.ibpj-org-blocks {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  margin-bottom: 48px;
}
.ibpj-org-block {
  background: #fff;
  border: 1px solid var(--ibpj-line);
  border-radius: var(--ibpj-r-lg);
  padding: 24px 28px;
  box-shadow: var(--ibpj-shadow-sm);
}
.ibpj-org-block h3 {
  font-family: var(--ibpj-font-display);
  font-size: 0.8rem;
  color: var(--ibpj-primary);
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: 12px;
}
.ibpj-org-block p {
  color: var(--ibpj-text);
  font-size: 0.95rem;
  line-height: 1.9;
}

.ibpj-sponsors h3 {
  font-family: var(--ibpj-font-display);
  font-size: 0.8rem;
  color: var(--ibpj-primary);
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: 20px;
}
.ibpj-sponsor-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 10px;
  background: #fff;
  border: 1px solid var(--ibpj-line);
  border-radius: var(--ibpj-r-lg);
  padding: 20px;
  box-shadow: var(--ibpj-shadow-sm);
}
.ibpj-sponsor-item {
  aspect-ratio: 3 / 2;
  display: flex; align-items: center; justify-content: center;
  padding: 12px;
  background: var(--ibpj-bg-tint);
  border-radius: var(--ibpj-r-sm);
  transition: background 0.2s var(--ibpj-ease);
}
.ibpj-sponsor-item:hover { background: var(--ibpj-primary-soft); }
.ibpj-sponsor-item img {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  filter: grayscale(20%);
  transition: filter 0.3s var(--ibpj-ease);
}
.ibpj-sponsor-item:hover img { filter: grayscale(0%); }

/* ============================================
   HISTORY
   ============================================ */
.ibpj-history {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
}
.ibpj-history-item {
  background: #fff;
  border: 1px solid var(--ibpj-line);
  border-radius: var(--ibpj-r-lg);
  padding: 20px 24px;
  transition: all 0.25s var(--ibpj-ease);
  box-shadow: var(--ibpj-shadow-sm);
}
.ibpj-history-item:hover { border-color: var(--ibpj-primary); box-shadow: var(--ibpj-shadow-lg); transform: translateY(-2px); }
.ibpj-history-item header {
  display: flex; align-items: center; gap: 14px;
  padding-bottom: 12px;
  margin-bottom: 14px;
  border-bottom: 1px solid var(--ibpj-line);
}
.ibpj-history-item .year {
  display: inline-flex; align-items: center; justify-content: center;
  min-width: 48px; height: 28px;
  padding: 0 10px;
  background: var(--ibpj-primary);
  color: #fff;
  font-family: "Inter", sans-serif;
  font-weight: 700;
  font-size: 0.82rem;
  border-radius: var(--ibpj-r-sm);
  letter-spacing: 0.03em;
}
.ibpj-history-item h3 {
  font-family: var(--ibpj-font-display);
  font-size: 1rem;
  font-weight: 700;
  color: var(--ibpj-ink);
}
.ibpj-history-item dl {
  display: grid;
  grid-template-columns: 80px 1fr;
  gap: 6px 16px;
}
.ibpj-history-item dt {
  font-size: 0.78rem;
  color: var(--ibpj-text-3);
  font-weight: 500;
  padding-top: 3px;
}
.ibpj-history-item dd {
  font-size: 0.92rem;
  color: var(--ibpj-text);
  line-height: 1.75;
}

/* ============================================
   COUNCIL
   ============================================ */
.ibpj-council {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}
.ibpj-council-col {
  background: #fff;
  border: 1px solid var(--ibpj-line);
  border-radius: var(--ibpj-r-lg);
  padding: 28px;
  box-shadow: var(--ibpj-shadow-sm);
}
.ibpj-council-col h3 {
  font-family: var(--ibpj-font-display);
  font-size: 1rem;
  font-weight: 700;
  color: var(--ibpj-ink);
  margin-bottom: 16px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--ibpj-primary);
  display: inline-block;
}
.ibpj-tag-list {
  display: flex; flex-wrap: wrap; gap: 8px;
}
.ibpj-tag-list li {
  padding: 6px 14px;
  background: var(--ibpj-primary-soft);
  color: var(--ibpj-primary-dark);
  font-size: 0.85rem;
  font-weight: 500;
  border-radius: var(--ibpj-r-pill);
}

/* ============================================
   RESOURCES
   ============================================ */
.ibpj-resource-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 12px;
  margin-bottom: 48px;
}
.ibpj-resource-card {
  display: flex; align-items: center; gap: 16px;
  padding: 20px;
  background: #fff;
  border: 1px solid var(--ibpj-line);
  border-radius: var(--ibpj-r-lg);
  color: var(--ibpj-text);
  transition: all 0.2s var(--ibpj-ease);
  box-shadow: var(--ibpj-shadow-sm);
}
.ibpj-resource-card:hover {
  border-color: var(--ibpj-primary);
  transform: translateY(-3px);
  box-shadow: var(--ibpj-shadow-md);
}
.ibpj-resource-icon {
  width: 44px; height: 44px;
  flex-shrink: 0;
  background: var(--ibpj-primary-soft);
  color: var(--ibpj-primary);
  border-radius: var(--ibpj-r);
  display: flex; align-items: center; justify-content: center;
}
.ibpj-resource-icon svg { width: 20px; height: 20px; }
.ibpj-resource-card strong {
  display: block;
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--ibpj-ink);
  margin-bottom: 2px;
}
.ibpj-resource-card span {
  font-family: "Inter", sans-serif;
  font-size: 0.75rem;
  color: var(--ibpj-text-3);
}

.ibpj-reference {
  background: #fff;
  border: 1px solid var(--ibpj-line);
  border-radius: var(--ibpj-r-lg);
  padding: 28px;
  box-shadow: var(--ibpj-shadow-sm);
}
.ibpj-reference h3 {
  font-family: var(--ibpj-font-display);
  font-size: 1rem;
  font-weight: 700;
  color: var(--ibpj-ink);
  margin-bottom: 16px;
}
.ibpj-reference-list li {
  padding: 12px 0;
  border-bottom: 1px solid var(--ibpj-line-soft);
}
.ibpj-reference-list li:last-child { border-bottom: none; }
.ibpj-reference-list a {
  display: flex; align-items: flex-start; gap: 8px;
  font-size: 0.92rem;
  color: var(--ibpj-text);
  line-height: 1.7;
}
.ibpj-reference-list a::before {
  content: '↗';
  color: var(--ibpj-primary);
  flex-shrink: 0;
}
.ibpj-reference-list a:hover { color: var(--ibpj-primary); }

/* ============================================
   CTA
   ============================================ */
.ibpj-cta {
  padding: 80px 24px;
  background: linear-gradient(135deg, var(--ibpj-primary) 0%, var(--ibpj-accent) 130%);
  color: #fff;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.ibpj-cta::before {
  content: '';
  position: absolute;
  top: -50%; left: -10%;
  width: 500px; height: 500px;
  background: radial-gradient(circle, rgba(255,255,255,0.15), transparent 60%);
  pointer-events: none;
}
.ibpj-cta h2 {
  font-family: var(--ibpj-font-display);
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 12px;
  position: relative;
}
.ibpj-cta p {
  font-size: 1rem;
  opacity: 0.92;
  margin-bottom: 32px;
  position: relative;
}
.ibpj-cta-actions {
  display: flex; flex-wrap: wrap; gap: 12px; justify-content: center;
  position: relative;
}
.ibpj-cta .ibpj-btn-primary {
  background: #fff; color: var(--ibpj-primary);
}
.ibpj-cta .ibpj-btn-primary:hover { background: var(--ibpj-primary-light); }
.ibpj-cta .ibpj-btn-outline {
  background: transparent; color: #fff; border-color: rgba(255,255,255,0.6);
}
.ibpj-cta .ibpj-btn-outline:hover { background: rgba(255,255,255,0.12); }

/* ============================================
   FOOTER
   ============================================ */
.ibpj-footer {
  padding: 56px 24px 24px;
  background: var(--ibpj-ink);
  color: rgba(255,255,255,0.75);
  border-top: 4px solid var(--ibpj-primary);
}
.ibpj-footer-inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
  padding-bottom: 32px;
  border-bottom: 1px solid rgba(255,255,255,0.1);
}
.ibpj-footer-brand strong {
  display: block;
  color: #fff;
  font-family: var(--ibpj-font-display);
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 6px;
}
.ibpj-footer-brand p {
  font-size: 0.85rem;
  color: rgba(255,255,255,0.6);
}
.ibpj-footer-nav {
  display: flex; flex-wrap: wrap; gap: 8px 20px;
}
.ibpj-footer-nav a {
  color: rgba(255,255,255,0.75);
  font-size: 0.88rem;
}
.ibpj-footer-nav a:hover { color: #fff; }
.ibpj-footer-home {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 10px 20px;
  color: #fff;
  border: 1px solid rgba(255,255,255,0.3);
  border-radius: var(--ibpj-r-pill);
  font-size: 0.9rem;
  font-weight: 500;
  transition: all 0.2s var(--ibpj-ease);
  align-self: flex-start;
}
.ibpj-footer-home:hover { color: #fff; border-color: #fff; background: rgba(255,255,255,0.08); }
.ibpj-footer-home svg { width: 14px; height: 14px; }
.ibpj-footer-bottom {
  padding-top: 24px;
  font-size: 0.78rem;
  color: rgba(255,255,255,0.45);
  text-align: center;
}

.ibpj-top-btn {
  position: fixed;
  bottom: 24px; right: 24px;
  width: 44px; height: 44px;
  background: #fff;
  color: var(--ibpj-primary);
  border: 1px solid var(--ibpj-line);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  box-shadow: var(--ibpj-shadow-md);
  opacity: 0; visibility: hidden; transform: translateY(10px);
  transition: all 0.3s var(--ibpj-ease);
  z-index: 90;
}
.ibpj-top-btn.visible { opacity: 1; visibility: visible; transform: translateY(0); }
.ibpj-top-btn svg { width: 18px; height: 18px; }

/* ============================================
   RESPONSIVE
   ============================================ */
@media (min-width: 640px) {
  .ibpj-vision-grid { grid-template-columns: repeat(3, 1fr); }
  .ibpj-info-cards { grid-template-columns: repeat(3, 1fr); }
  .ibpj-org-blocks { grid-template-columns: 1fr 2fr; }
  .ibpj-council { grid-template-columns: 2fr 1fr; }
  .ibpj-history { grid-template-columns: repeat(2, 1fr); }
  .ibpj-footer-inner {
    grid-template-columns: 1fr auto auto;
    align-items: center;
  }
}

@media (min-width: 900px) {
  .ibpj-nav { display: flex; }
  .ibpj-back-link { display: inline-flex; }
  .ibpj-nav-toggle { display: none; }
  .ibpj-nav-mobile { display: none; }

  .ibpj-history { grid-template-columns: repeat(3, 1fr); }
  .ibpj-speaker {
    grid-template-columns: 280px 1fr;
    align-items: start;
    gap: 48px;
    padding: 40px;
  }
  .ibpj-speaker-photo { margin: 0; }

  .ibpj-timeline::before { left: 120px; }
  .ibpj-timeline-item { padding-left: 170px; }
  .ibpj-timeline-item::before { left: 112px; }
  .ibpj-timeline-time {
    position: absolute;
    left: 0; top: 2px;
    width: 96px;
    text-align: right;
  }

  .ibpj-section { padding: 112px 24px; }
  .ibpj-hero { padding: 120px 24px 140px; }
}