/* ==========================================================================
   DXサポート研究会 - Common Stylesheet
   ========================================================================== */

:root {
  --color-primary: #0F2C5C;
  --color-primary-light: #1E4A8C;
  --color-secondary: #00A6C7;
  --color-accent: #FF6B35;
  --color-accent-soft: #FFE5D9;
  --color-bg: #FAFAF7;
  --color-bg-alt: #F1F4F8;
  --color-card: #FFFFFF;
  --color-text: #1A1A1A;
  --color-text-muted: #5A6B7C;
  --color-border: #E2E6EC;
  --shadow-sm: 0 1px 3px rgba(15, 44, 92, 0.06), 0 1px 2px rgba(15, 44, 92, 0.04);
  --shadow-md: 0 4px 16px rgba(15, 44, 92, 0.08), 0 2px 6px rgba(15, 44, 92, 0.04);
  --shadow-lg: 0 12px 40px rgba(15, 44, 92, 0.12);
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 22px;
  --max-width: 1180px;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: 'Noto Sans JP', 'Hiragino Sans', 'Yu Gothic', sans-serif;
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  font-feature-settings: "palt";
}

h1, h2, h3, h4 {
  font-family: 'Noto Serif JP', 'Yu Mincho', serif;
  font-weight: 700;
  letter-spacing: 0.02em;
  line-height: 1.4;
  color: var(--color-primary);
}

a { color: var(--color-primary); text-decoration: none; transition: color 0.2s; }
a:hover { color: var(--color-accent); }

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

/* ==========================================================================
   Header / Navigation
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border);
}

.header-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
  height: 76px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: 'Noto Serif JP', serif;
  font-weight: 700;
  font-size: 18px;
  color: var(--color-primary);
}

.logo-mark {
  width: 64px;
  height: 56px;
  background: url('images/logo.png') no-repeat center / contain;
  flex-shrink: 0;
  display: block;
}

/* Footer (dark background) variant — light square background for visibility */
.site-footer .logo-mark {
  width: 60px;
  height: 60px;
  background-color: rgba(255, 255, 255, 0.95);
  border-radius: 8px;
  background-image: url('images/logo.png');
  background-size: 82% auto;
  background-position: center center;
  background-repeat: no-repeat;
  padding: 0;
}

.logo-text { display: flex; flex-direction: column; line-height: 1.2; }
.logo-text .lt-en { font-size: 10px; letter-spacing: 0.15em; color: var(--color-text-muted); font-family: 'Inter', sans-serif; font-weight: 500; }

.nav { display: flex; gap: 32px; align-items: center; }
.nav a {
  font-size: 14px;
  font-weight: 500;
  color: var(--color-text);
  position: relative;
  padding: 4px 0;
}
.nav a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-accent);
  transition: width 0.3s;
}
.nav a:hover::after, .nav a.active::after { width: 100%; }
.nav a.active { color: var(--color-primary); font-weight: 700; }

.nav-cta {
  background: var(--color-primary);
  color: #fff !important;
  padding: 10px 20px !important;
  border-radius: 999px;
  font-size: 13px;
}
.nav-cta:hover { background: var(--color-accent); color: #fff !important; }
.nav-cta::after { display: none; }

.menu-toggle { display: none; background: none; border: none; cursor: pointer; font-size: 22px; color: var(--color-primary); }

/* ==========================================================================
   Hero Section
   ========================================================================== */
.hero {
  position: relative;
  padding: 96px 24px 120px;
  background: linear-gradient(135deg, #0F2C5C 0%, #1E4A8C 60%, #00A6C7 110%);
  color: #fff;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(circle at 20% 30%, rgba(255, 107, 53, 0.18), transparent 40%),
    radial-gradient(circle at 80% 70%, rgba(0, 166, 199, 0.25), transparent 50%);
  pointer-events: none;
}

.hero::after {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.04) 1px, transparent 1px);
  background-size: 60px 60px;
  pointer-events: none;
  opacity: 0.6;
}

.hero-inner {
  position: relative;
  max-width: var(--max-width);
  margin: 0 auto;
  z-index: 1;
}

.hero-eyebrow {
  display: inline-block;
  padding: 6px 14px;
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.25);
  border-radius: 999px;
  font-size: 12px;
  letter-spacing: 0.1em;
  margin-bottom: 24px;
  backdrop-filter: blur(8px);
}

.hero h1 {
  color: #fff;
  font-size: clamp(28px, 4.4vw, 52px);
  line-height: 1.35;
  margin-bottom: 24px;
  letter-spacing: 0.03em;
}

.hero h1 .accent { color: #FFB84D; }

.hero-lead {
  max-width: 720px;
  font-size: 16px;
  line-height: 1.9;
  opacity: 0.9;
  margin-bottom: 40px;
}

.hero-cta { display: flex; gap: 16px; flex-wrap: wrap; }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 14px;
  transition: all 0.25s;
  cursor: pointer;
  border: none;
}

.btn-primary {
  background: var(--color-accent);
  color: #fff;
  box-shadow: 0 6px 20px rgba(255, 107, 53, 0.35);
}
.btn-primary:hover { background: #ff5a1f; color: #fff; transform: translateY(-2px); box-shadow: 0 10px 28px rgba(255, 107, 53, 0.45); }

.btn-outline {
  background: rgba(255, 255, 255, 0.08);
  color: #fff;
  border: 1.5px solid rgba(255, 255, 255, 0.4);
  backdrop-filter: blur(8px);
}
.btn-outline:hover { background: #fff; color: var(--color-primary); }

.btn-dark { background: var(--color-primary); color: #fff; }
.btn-dark:hover { background: var(--color-accent); color: #fff; }

/* ==========================================================================
   Sections
   ========================================================================== */
.section { padding: 96px 24px; }
.section-alt { background: var(--color-bg-alt); }

.section-inner { max-width: var(--max-width); margin: 0 auto; }

.section-head { text-align: center; margin-bottom: 64px; }
.section-head .eyebrow {
  display: inline-block;
  font-size: 12px;
  font-family: 'Inter', sans-serif;
  letter-spacing: 0.2em;
  color: var(--color-secondary);
  font-weight: 600;
  margin-bottom: 12px;
}
.section-head h2 { font-size: clamp(24px, 3vw, 36px); margin-bottom: 12px; }
.section-head p { color: var(--color-text-muted); font-size: 15px; }

/* ==========================================================================
   Cards
   ========================================================================== */
.cards-grid { display: grid; gap: 28px; }
.cards-grid.cols-3 { grid-template-columns: repeat(3, 1fr); }
.cards-grid.cols-4 { grid-template-columns: repeat(4, 1fr); }

.card {
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 32px 28px;
  transition: all 0.3s;
  position: relative;
  overflow: hidden;
}

.card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); border-color: var(--color-secondary); }

.card-icon {
  width: 52px;
  height: 52px;
  border-radius: 12px;
  background: var(--color-accent-soft);
  display: grid;
  place-items: center;
  font-size: 24px;
  margin-bottom: 20px;
  color: var(--color-accent);
}
.card-icon.var-blue { background: #E3F2F9; color: var(--color-secondary); }
.card-icon.var-navy { background: #E5E9F2; color: var(--color-primary); }

.card h3 { font-size: 18px; margin-bottom: 12px; }
.card p { color: var(--color-text-muted); font-size: 14px; line-height: 1.8; }

/* ==========================================================================
   News List
   ========================================================================== */
.news-list { display: flex; flex-direction: column; gap: 0; }
.news-item {
  display: grid;
  grid-template-columns: 110px 90px 1fr;
  align-items: center;
  gap: 20px;
  padding: 20px 0;
  border-bottom: 1px solid var(--color-border);
  transition: background 0.2s;
}
.news-item:hover { background: rgba(0, 166, 199, 0.03); padding-left: 8px; padding-right: 8px; }
.news-date { font-family: 'Inter', sans-serif; font-size: 13px; color: var(--color-text-muted); }
.news-tag {
  display: inline-block;
  text-align: center;
  padding: 4px 10px;
  font-size: 11px;
  font-weight: 600;
  border-radius: 4px;
  background: var(--color-primary);
  color: #fff;
  letter-spacing: 0.05em;
}
.news-tag.event { background: var(--color-accent); }
.news-tag.report { background: var(--color-secondary); }
.news-tag.member { background: #7B68EE; }
.news-title { font-size: 14px; color: var(--color-text); font-weight: 500; }

/* ==========================================================================
   Member Cards
   ========================================================================== */
.member-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; }

.member-card {
  background: #fff;
  border-radius: var(--radius-md);
  padding: 32px 28px;
  text-align: center;
  border: 1px solid var(--color-border);
  transition: all 0.3s;
}
.member-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); }

.member-photo {
  width: 132px;
  height: 132px;
  border-radius: 50%;
  margin: 0 auto 20px;
  background: linear-gradient(135deg, #E5E9F2, #F1F4F8);
  display: grid;
  place-items: center;
  font-size: 44px;
  color: var(--color-primary);
  font-family: 'Noto Serif JP', serif;
  font-weight: 700;
  border: 4px solid #fff;
  box-shadow: 0 0 0 2px var(--color-secondary);
  overflow: hidden;
  position: relative;
}
.member-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.member-name { font-size: 22px; margin-bottom: 4px; color: var(--color-primary); font-family: 'Noto Serif JP', serif; font-weight: 700; }
.member-role { font-size: 14px; color: var(--color-secondary); font-weight: 600; letter-spacing: 0.03em; margin-bottom: 18px; }
.member-bio { font-size: 15px; color: var(--color-text-muted); margin-bottom: 20px; line-height: 1.9; min-height: 88px; }

.member-tags { display: flex; flex-wrap: wrap; gap: 6px; justify-content: center; margin-bottom: 4px; }
.member-tags span {
  font-size: 12px;
  padding: 5px 12px;
  background: var(--color-bg-alt);
  color: var(--color-text);
  border-radius: 999px;
}

.member-links { display: flex; justify-content: center; gap: 12px; }
.member-links a {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: var(--color-bg-alt);
  display: grid;
  place-items: center;
  font-size: 14px;
  color: var(--color-primary);
  transition: all 0.2s;
}
.member-links a:hover { background: var(--color-accent); color: #fff; }

/* ==========================================================================
   Team Block (Photo + Message layout)
   ========================================================================== */
.team-block {
  display: grid;
  grid-template-columns: 1.1fr 1.2fr;
  gap: 64px;
  align-items: center;
}
@media (max-width: 900px) {
  .team-block { grid-template-columns: 1fr; gap: 40px; }
}

/* ==========================================================================
   Team Photo (Montage)
   ========================================================================== */
.team-photo {
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--color-border);
}
.team-photo-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 10px;
}
.team-photo-grid .tp-item {
  border-radius: var(--radius-md);
  overflow: hidden;
  background: linear-gradient(135deg, #E5E9F2, #F1F4F8);
  position: relative;
  box-shadow: var(--shadow-sm);
  aspect-ratio: 3 / 4;
}
.team-photo-grid .tp-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.4s;
}
.team-photo-grid .tp-item:hover img { transform: scale(1.05); }

@media (max-width: 700px) {
  .team-photo-grid { grid-template-columns: repeat(3, 1fr); gap: 8px; }
  .team-photo { padding: 16px; }
  .team-photo-caption { font-size: 10px; }
}

.team-photo-caption {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 16px;
  font-size: 11px;
  color: var(--color-text-muted);
}
.team-photo-caption .badge {
  background: var(--color-primary);
  color: #fff;
  padding: 3px 10px;
  border-radius: 4px;
  font-size: 10px;
  letter-spacing: 0.1em;
  font-weight: 700;
}

/* ==========================================================================
   Activity Coming Soon
   ========================================================================== */
.activity-coming-soon {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 72px 40px;
  text-align: center;
  box-shadow: var(--shadow-sm);
}
.activity-coming-soon .coming-icon {
  font-size: 56px;
  margin-bottom: 24px;
  opacity: 0.7;
}
.activity-coming-soon h3 {
  font-size: 24px;
  margin-bottom: 20px;
  color: var(--color-primary);
}
.activity-coming-soon p {
  color: var(--color-text-muted);
  line-height: 2;
  max-width: 560px;
  margin: 0 auto 16px;
  font-size: 15px;
}
.activity-coming-soon .note {
  margin-top: 24px;
  padding-top: 20px;
  border-top: 1px dashed var(--color-border);
  font-size: 13px;
}
.activity-coming-soon .note a {
  color: var(--color-accent);
  text-decoration: underline;
}

/* ==========================================================================
   Contact Form
   ========================================================================== */
.contact-card {
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
  color: #fff;
  padding: 64px 56px;
  border-radius: var(--radius-lg);
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}
.contact-card::after {
  content: '';
  position: absolute;
  top: -80px;
  right: -80px;
  width: 260px;
  height: 260px;
  border-radius: 50%;
  background: rgba(255, 184, 77, 0.12);
  pointer-events: none;
}
.contact-card > * { position: relative; z-index: 1; }

.contact-header { text-align: center; margin-bottom: 40px; }
.contact-eyebrow { color: #FFB84D !important; font-size: 12px; font-family: 'Inter', sans-serif; letter-spacing: 0.2em; font-weight: 600; margin-bottom: 12px; display: inline-block; }
.contact-header h2 { color: #fff; font-size: 30px; margin-bottom: 12px; }
.contact-header p { opacity: 0.9; max-width: 640px; margin: 0 auto; }

.contact-form {
  max-width: 720px;
  margin: 0 auto;
  background: rgba(255, 255, 255, 0.07);
  border: 1px solid rgba(255, 255, 255, 0.15);
  padding: 32px;
  border-radius: var(--radius-md);
  backdrop-filter: blur(8px);
}

.form-row { margin-bottom: 20px; }
.form-row-2col { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-field { display: flex; flex-direction: column; gap: 8px; }
.form-label {
  font-size: 13px;
  font-weight: 600;
  color: rgba(255, 255, 255, 0.95);
  letter-spacing: 0.03em;
}
.form-label em {
  font-style: normal;
  font-size: 10px;
  background: var(--color-accent);
  color: #fff;
  padding: 2px 6px;
  border-radius: 4px;
  margin-left: 6px;
  vertical-align: 2px;
  font-weight: 700;
}

.contact-form input[type="text"],
.contact-form input[type="email"],
.contact-form input[type="tel"],
.contact-form select,
.contact-form textarea {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid rgba(255, 255, 255, 0.25);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.95);
  color: var(--color-text);
  font-size: 15px;
  font-family: inherit;
  transition: all 0.2s;
}
.contact-form select {
  appearance: none;
  -webkit-appearance: none;
  background-image: url("data:image/svg+xml;charset=UTF-8,%3csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3e%3cpath fill='%230F2C5C' d='M6 8L0 0h12z'/%3e%3c/svg%3e");
  background-repeat: no-repeat;
  background-position: right 14px center;
  padding-right: 36px;
}
.contact-form input:focus,
.contact-form select:focus,
.contact-form textarea:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(255, 107, 53, 0.25);
}
.contact-form textarea { resize: vertical; min-height: 120px; line-height: 1.7; }

.form-checkbox { margin-top: 8px; }
.form-checkbox label {
  display: flex;
  align-items: center;
  gap: 10px;
  cursor: pointer;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.95);
}
.form-checkbox input[type="checkbox"] {
  width: 18px;
  height: 18px;
  cursor: pointer;
  accent-color: var(--color-accent);
}
.form-checkbox em {
  font-style: normal;
  font-size: 10px;
  background: var(--color-accent);
  color: #fff;
  padding: 2px 6px;
  border-radius: 4px;
  margin-left: 4px;
  font-weight: 700;
  vertical-align: 1px;
}

.form-submit { text-align: center; margin-top: 32px; }
.btn-large { padding: 16px 36px; font-size: 15px; }

/* Honeypot field — hidden from users, visible to bots */
.hp-field {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

@media (max-width: 700px) {
  .contact-card { padding: 40px 24px; }
  .contact-form { padding: 24px 20px; }
  .form-row-2col { grid-template-columns: 1fr; }
}

/* ==========================================================================
   Publications
   ========================================================================== */
.publication-card {
  display: grid;
  grid-template-columns: 320px 1fr;
  gap: 48px;
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 40px;
  box-shadow: var(--shadow-md);
  align-items: center;
}

.pub-cover {
  display: block;
  aspect-ratio: 3 / 4;
  border-radius: 6px;
  overflow: hidden;
  box-shadow: 0 18px 40px rgba(15, 44, 92, 0.25), 0 2px 6px rgba(0,0,0,0.1);
  transition: transform 0.3s;
  position: relative;
  background: #f0f0f0;
}
.pub-cover:hover { transform: translateY(-4px) rotate(-1deg); }
.pub-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.pub-cover-inner {
  width: 100%;
  height: 100%;
  background:
    linear-gradient(160deg, #0F2C5C 0%, #1E4A8C 60%, #00A6C7 130%);
  color: #fff;
  padding: 28px 22px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  position: relative;
  overflow: hidden;
}

.pub-cover-inner::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(circle at 80% 90%, rgba(255, 107, 53, 0.35), transparent 50%),
    linear-gradient(rgba(255,255,255,0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.05) 1px, transparent 1px);
  background-size: cover, 30px 30px, 30px 30px;
  pointer-events: none;
}

.pub-cover-inner > * { position: relative; z-index: 1; }

.pub-cover-series {
  font-size: 10px;
  font-family: 'Inter', sans-serif;
  letter-spacing: 0.25em;
  color: #FFB84D;
  font-weight: 600;
  text-transform: uppercase;
}

.pub-cover-title {
  font-family: 'Noto Serif JP', serif;
  font-weight: 700;
  line-height: 1.15;
  margin-top: 16px;
  text-shadow: 0 2px 12px rgba(0,0,0,0.3);
}
.pub-cover-title .kanji { font-size: 24px; letter-spacing: 0.04em; }
.pub-cover-title .big {
  font-family: 'Inter', 'Noto Serif JP', serif;
  font-size: 48px;
  color: #FFB84D;
  margin: 0 4px;
  letter-spacing: -0.02em;
}

.pub-cover-sub {
  font-size: 11px;
  font-family: 'Noto Serif JP', serif;
  margin-top: 14px;
  opacity: 0.85;
  line-height: 1.7;
  border-top: 1px solid rgba(255,255,255,0.3);
  border-bottom: 1px solid rgba(255,255,255,0.3);
  padding: 10px 0;
}

.pub-cover-author {
  font-family: 'Noto Serif JP', serif;
  font-size: 16px;
  font-weight: 700;
  letter-spacing: 0.1em;
  align-self: flex-end;
  margin-top: 14px;
}

.pub-cover-deco {
  position: absolute;
  bottom: -40px;
  right: -40px;
  width: 120px;
  height: 120px;
  border-radius: 50%;
  background: rgba(255, 184, 77, 0.18);
  z-index: 0;
}

.pub-body { padding: 0; }

.pub-badge {
  display: inline-block;
  background: var(--color-accent);
  color: #fff;
  padding: 4px 12px;
  border-radius: 4px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.1em;
  margin-bottom: 16px;
  font-family: 'Inter', sans-serif;
}

.pub-body h3 {
  font-size: 24px;
  margin-bottom: 20px;
  line-height: 1.5;
}
.pub-subtitle {
  font-size: 15px;
  color: var(--color-text-muted);
  font-weight: 500;
  font-family: 'Noto Sans JP', sans-serif;
}

.pub-meta {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px 24px;
  margin-bottom: 24px;
  padding: 16px 20px;
  background: var(--color-bg-alt);
  border-radius: var(--radius-sm);
  font-size: 13px;
}
.pub-meta div { display: flex; align-items: baseline; gap: 12px; }
.pub-meta span {
  color: var(--color-text-muted);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.05em;
  min-width: 56px;
}

.pub-desc {
  color: var(--color-text-muted);
  line-height: 2;
  margin-bottom: 28px;
  font-size: 14px;
}

.pub-actions { display: flex; gap: 12px; flex-wrap: wrap; }

.btn-outline-dark {
  background: transparent;
  color: var(--color-primary);
  border: 1.5px solid var(--color-primary);
}
.btn-outline-dark:hover { background: var(--color-primary); color: #fff; }

@media (max-width: 800px) {
  .publication-card { grid-template-columns: 1fr; gap: 32px; padding: 28px; }
  .pub-cover { max-width: 260px; margin: 0 auto; }
  .pub-meta { grid-template-columns: 1fr; }
}

/* ==========================================================================
   Notion Embed Block
   ========================================================================== */
.notion-embed {
  background: #fff;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.notion-embed-header {
  padding: 18px 24px;
  background: linear-gradient(90deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 14px;
}

.notion-embed-header .left { display: flex; align-items: center; gap: 10px; font-weight: 600; }
.notion-embed-header .badge {
  background: rgba(255,255,255,0.18);
  padding: 3px 10px;
  border-radius: 4px;
  font-size: 11px;
  letter-spacing: 0.05em;
}

.notion-frame-wrap {
  position: relative;
  width: 100%;
  min-height: 720px;
  background: #fafafa;
}
.notion-frame-wrap iframe { width: 100%; height: 720px; border: none; }

.notion-placeholder {
  padding: 80px 32px;
  text-align: center;
  color: var(--color-text-muted);
}
.notion-placeholder .icon { font-size: 48px; margin-bottom: 16px; display: block; }
.notion-placeholder h3 { color: var(--color-primary); margin-bottom: 10px; }
.notion-placeholder code {
  display: inline-block;
  background: var(--color-bg-alt);
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 12px;
  font-family: 'Consolas', monospace;
  color: var(--color-accent);
}

/* ==========================================================================
   Case Study Featured
   ========================================================================== */
.case-featured {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  margin-bottom: 48px;
}

.case-card {
  background: #fff;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--color-border);
  transition: all 0.3s;
}
.case-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }

.case-cover {
  height: 180px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  position: relative;
  display: grid;
  place-items: center;
  color: #fff;
}
.case-cover .label {
  position: absolute;
  top: 14px;
  left: 14px;
  background: rgba(255,255,255,0.95);
  color: var(--color-primary);
  font-size: 11px;
  padding: 4px 10px;
  border-radius: 999px;
  font-weight: 700;
}
.case-cover .num { font-size: 56px; font-weight: 700; opacity: 0.85; font-family: 'Inter', sans-serif; }

.case-body { padding: 24px 26px; }
.case-body h3 { font-size: 17px; margin-bottom: 8px; }
.case-body p { font-size: 13px; color: var(--color-text-muted); margin-bottom: 14px; }
.case-meta { display: flex; gap: 12px; font-size: 11px; color: var(--color-text-muted); flex-wrap: wrap; }
.case-meta span { display: inline-flex; align-items: center; gap: 4px; }

/* ==========================================================================
   Activity Report List
   ========================================================================== */
.activity-list { display: flex; flex-direction: column; gap: 24px; }

.activity-item {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 32px;
  background: #fff;
  padding: 28px 32px;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  transition: all 0.25s;
}
.activity-item:hover { border-color: var(--color-secondary); box-shadow: var(--shadow-sm); }

.activity-date-block {
  text-align: center;
  border-right: 1px solid var(--color-border);
  padding-right: 24px;
}
.activity-date-block .month { font-size: 12px; color: var(--color-text-muted); letter-spacing: 0.1em; }
.activity-date-block .day { font-size: 36px; font-family: 'Inter', sans-serif; font-weight: 700; color: var(--color-primary); line-height: 1; margin: 4px 0; }
.activity-date-block .year { font-size: 11px; color: var(--color-text-muted); }

.activity-content h3 { font-size: 21px; margin-bottom: 12px; line-height: 1.5; }
.activity-content .meta { font-size: 14px; color: var(--color-text-muted); margin-bottom: 12px; }
.activity-content .meta strong { color: var(--color-primary); }
.activity-content p { font-size: 15px; color: var(--color-text-muted); margin-bottom: 16px; line-height: 1.9; }
.activity-tags { display: flex; gap: 8px; flex-wrap: wrap; }
.activity-tags span { font-size: 12px; padding: 4px 12px; background: var(--color-accent-soft); color: var(--color-accent); border-radius: 999px; font-weight: 600; }

/* ==========================================================================
   Page Hero (sub pages)
   ========================================================================== */
.page-hero {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
  color: #fff;
  padding: 96px 24px 72px;
  position: relative;
  overflow: hidden;
}
.page-hero::after {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(circle at 90% 50%, rgba(0,166,199,0.25), transparent 50%);
}
.page-hero-inner { position: relative; max-width: var(--max-width); margin: 0 auto; z-index: 1; }
.page-hero .breadcrumb { font-size: 13px; opacity: 0.75; margin-bottom: 18px; }
.page-hero .breadcrumb a { color: #fff; }
.page-hero h1 { color: #fff; font-size: clamp(32px, 4vw, 44px); margin-bottom: 16px; }
.page-hero .lead { opacity: 0.9; max-width: 760px; font-size: 17px; line-height: 1.9; }

/* ==========================================================================
   Footer
   ========================================================================== */
.site-footer {
  background: var(--color-primary);
  color: rgba(255, 255, 255, 0.75);
  padding: 64px 24px 32px;
}
.footer-inner { max-width: var(--max-width); margin: 0 auto; }
.footer-top {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255,255,255,0.12);
}
.footer-brand .logo { color: #fff; margin-bottom: 16px; }
.footer-brand .logo .lt-en { color: rgba(255,255,255,0.6); }
.footer-brand p { font-size: 13px; line-height: 1.9; }
.footer-col h4 { color: #fff; font-size: 13px; margin-bottom: 18px; font-family: 'Noto Sans JP', sans-serif; letter-spacing: 0.05em; }
.footer-col ul { list-style: none; display: flex; flex-direction: column; gap: 10px; }
.footer-col a { color: rgba(255,255,255,0.75); font-size: 13px; }
.footer-col a:hover { color: #FFB84D; }
.footer-bottom { display: flex; justify-content: space-between; align-items: center; padding-top: 24px; font-size: 12px; }

/* ==========================================================================
   Responsive
   ========================================================================== */
@media (max-width: 900px) {
  .cards-grid.cols-3, .cards-grid.cols-4 { grid-template-columns: repeat(2, 1fr); }
  .member-grid { grid-template-columns: repeat(2, 1fr); }
  .case-featured { grid-template-columns: 1fr; }
  .footer-top { grid-template-columns: 1fr 1fr; }
  .nav { display: none; position: absolute; top: 76px; left: 0; right: 0; flex-direction: column; background: #fff; padding: 24px; border-bottom: 1px solid var(--color-border); gap: 18px; }
  .nav.open { display: flex; }
  .menu-toggle { display: block; }
  .section { padding: 64px 20px; }
  .hero { padding: 64px 20px 80px; }
  .activity-item { grid-template-columns: 1fr; }
  .activity-date-block { display: flex; align-items: center; justify-content: flex-start; gap: 12px; border-right: none; border-bottom: 1px solid var(--color-border); padding: 0 0 12px 0; }
  .activity-date-block .day { font-size: 22px; margin: 0; }
}

@media (max-width: 560px) {
  .cards-grid.cols-3, .cards-grid.cols-4 { grid-template-columns: 1fr; }
  .member-grid { grid-template-columns: 1fr; }
  .news-item { grid-template-columns: 1fr; gap: 6px; }
  .footer-top { grid-template-columns: 1fr; gap: 32px; }
  .footer-bottom { flex-direction: column; gap: 8px; }
}