/* ===================================================
   CE Consortium Website Stylesheet
   =================================================== */

/* --- CSS Variables --- */
:root {
  --color-teal-dark:   #1E7A8F;
  --color-teal:        #2A9AAE;
  --color-teal-light:  #3AACB8;
  --color-teal-pale:   #D6EDF1;
  --color-teal-bg:     #EDF7F9;
  --color-navy:        #2C3E55;
  --color-navy-light:  #3D5270;
  --color-text:        #2C3E55;
  --color-text-light:  #5A6E85;
  --color-white:       #FFFFFF;
  --color-bg:          #F5FAFB;
  --color-border:      #C8DFE5;
  --color-card-bg:     #EBF4F7;

  --font-serif:   'Noto Serif JP', 'Georgia', serif;
  --font-sans:    'Noto Sans JP', 'Hiragino Kaku Gothic ProN', sans-serif;

  --size-h1:    2.4rem;
  --size-h2:    1.6rem;
  --size-h3:    1.05rem;
  --size-body:  0.95rem;
  --size-small: 0.82rem;

  --radius:     8px;
  --radius-lg:  14px;
  --shadow:     0 2px 16px rgba(30, 122, 143, 0.10);
  --shadow-lg:  0 6px 28px rgba(30, 122, 143, 0.15);

  --max-width:  1100px;
  --section-gap: 80px;
}

/* --- Reset --- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-sans);
  font-size: var(--size-body);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
}
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }

/* --- Container --- */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* ===================================================
   HEADER
   =================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255,255,255,0.96);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--color-border);
  box-shadow: 0 1px 8px rgba(30,122,143,0.07);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
  gap: 16px;
}

.header-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.logo-mark svg {
  width: 48px;
  height: 48px;
}

.logo-text {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}

.logo-en {
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-teal-dark);
  letter-spacing: 0.03em;
}

.logo-ja {
  font-size: 0.62rem;
  color: var(--color-text-light);
  letter-spacing: 0.02em;
}

/* --- Site Nav --- */
.site-nav { display: flex; align-items: center; }

.nav-list {
  display: flex;
  align-items: center;
  gap: 0;
  flex-wrap: wrap;
}

.nav-link {
  display: block;
  padding: 6px 10px;
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--color-text-light);
  letter-spacing: 0.02em;
  border-radius: 4px;
  transition: color 0.2s, background 0.2s;
  white-space: nowrap;
}

.nav-link:hover {
  color: var(--color-teal-dark);
  background: var(--color-teal-bg);
}

/* --- Hamburger --- */
.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  border-radius: 6px;
  transition: background 0.2s;
}
.hamburger:hover { background: var(--color-teal-bg); }
.hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-teal-dark);
  border-radius: 2px;
  transition: transform 0.3s, opacity 0.3s;
}
.hamburger.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* --- Mobile Menu --- */
.mobile-menu {
  display: none;
  background: var(--color-white);
  border-top: 1px solid var(--color-border);
  padding: 0;
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease, padding 0.35s ease;
}
.mobile-menu.open {
  max-height: 500px;
  padding: 12px 0;
}
.mobile-nav-list { padding: 0 24px; }
.mobile-nav-list li { border-bottom: 1px solid var(--color-teal-pale); }
.mobile-nav-list a {
  display: block;
  padding: 14px 4px;
  font-size: 0.9rem;
  color: var(--color-navy);
  font-weight: 500;
  transition: color 0.2s;
}
.mobile-nav-list a:hover { color: var(--color-teal); }

/* ===================================================
   HERO
   =================================================== */
.hero {
  position: relative;
  background: linear-gradient(135deg, #EBF6F8 0%, #F5FAFB 50%, #EAF2F5 100%);
  padding: 80px 0 90px;
  overflow: hidden;
}

.hero-bg-deco {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 60% 50% at 80% 30%, rgba(58,172,184,0.10) 0%, transparent 70%),
    radial-gradient(ellipse 40% 60% at 10% 80%, rgba(30,122,143,0.07) 0%, transparent 60%);
  pointer-events: none;
}

.hero-inner {
  display: flex;
  align-items: center;
  gap: 60px;
  position: relative;
  z-index: 1;
}

.hero-logo-block {
  display: flex;
  flex-direction: column;
  align-items: center;
  flex-shrink: 0;
  gap: 10px;
}

.hero-logo-mark svg {
  width: 180px;
  height: 180px;
  filter: drop-shadow(0 4px 16px rgba(30,122,143,0.18));
  animation: heroLogoFloat 4s ease-in-out infinite;
}

@keyframes heroLogoFloat {
  0%, 100% { transform: translateY(0); }
  50%       { transform: translateY(-8px); }
}

.hero-logo-label {
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-teal-dark);
  text-align: center;
  line-height: 1.3;
  letter-spacing: 0.04em;
}

.hero-content {
  flex: 1;
  animation: fadeSlideIn 0.8s ease both;
}

@keyframes fadeSlideIn {
  from { opacity: 0; transform: translateX(20px); }
  to   { opacity: 1; transform: translateX(0); }
}

.hero-org-name {
  font-size: 0.8rem;
  color: var(--color-teal);
  margin-bottom: 16px;
  letter-spacing: 0.03em;
  font-weight: 500;
}

.hero-title {
  font-family: var(--font-serif);
  font-size: var(--size-h1);
  color: var(--color-navy);
  line-height: 1.5;
  margin-bottom: 20px;
  letter-spacing: 0.02em;
}

.hero-desc {
  font-size: 0.95rem;
  color: var(--color-text-light);
  line-height: 1.85;
  margin-bottom: 36px;
}

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

/* ===================================================
   BUTTONS
   =================================================== */
.btn {
  display: inline-block;
  padding: 13px 28px;
  border-radius: 50px;
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  cursor: pointer;
  transition: transform 0.22s, box-shadow 0.22s, background 0.22s, color 0.22s, border-color 0.22s;
  white-space: nowrap;
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-teal-light), var(--color-teal-dark));
  color: var(--color-white);
  box-shadow: 0 3px 14px rgba(30,122,143,0.28);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 7px 22px rgba(30,122,143,0.38);
}
.btn-primary:active { transform: translateY(0); }

.btn-outline {
  background: transparent;
  color: var(--color-teal-dark);
  border: 2px solid var(--color-teal);
}
.btn-outline:hover {
  background: var(--color-teal-bg);
  transform: translateY(-2px);
  border-color: var(--color-teal-dark);
}

.btn-login {
  display: block;
  padding: 18px 32px;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius);
  text-align: center;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--color-navy);
  background: var(--color-white);
  transition: all 0.22s;
  box-shadow: 0 1px 6px rgba(0,0,0,0.05);
  flex: 1;
  min-width: 180px;
}
.btn-login:hover {
  background: var(--color-teal-bg);
  border-color: var(--color-teal);
  color: var(--color-teal-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow);
}

/* ===================================================
   SECTION COMMONS
   =================================================== */
.section {
  padding: var(--section-gap) 0;
  border-bottom: 1px solid var(--color-teal-pale);
}

.section:nth-child(even) { background: var(--color-white); }

.section-layout {
  display: flex;
  gap: 48px;
  align-items: flex-start;
}

/* --- Side Logo Column --- */
.section-logo-col {
  flex-shrink: 0;
  width: 130px;
  display: flex;
  justify-content: center;
}

.side-logo-mark {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  padding: 8px;
}
.side-logo-mark svg { width: 70px; height: 70px; }
.side-logo-mark span {
  font-size: 0.7rem;
  font-weight: 700;
  color: var(--color-teal-dark);
  text-align: center;
  line-height: 1.3;
  letter-spacing: 0.04em;
}

/* --- Section Heading --- */
.section-main-col { flex: 1; min-width: 0; }

.section-heading {
  font-family: var(--font-serif);
  font-size: var(--size-h2);
  color: var(--color-navy);
  font-weight: 700;
  letter-spacing: 0.04em;
  margin-bottom: 12px;
}

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

.section-divider {
  width: 40px;
  height: 3px;
  background: linear-gradient(90deg, var(--color-teal-light), var(--color-teal-dark));
  border-radius: 2px;
  margin-bottom: 24px;
}

.section-divider-center { margin: 12px auto 24px; }

.section-lead {
  color: var(--color-text);
  line-height: 1.9;
  margin-bottom: 32px;
}

.section-lead-center { text-align: left; max-width: 800px; margin: 0 auto 36px; }

/* ===================================================
   事業概要 CARDS
   =================================================== */
.card-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

.info-card {
  background: var(--color-card-bg);
  border-radius: var(--radius);
  padding: 20px 22px;
  border: 1px solid var(--color-border);
  transition: box-shadow 0.2s, transform 0.2s;
}
.info-card:hover {
  box-shadow: var(--shadow);
  transform: translateY(-2px);
}

.card-title {
  font-size: var(--size-h3);
  font-weight: 700;
  color: var(--color-navy);
  margin-bottom: 12px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--color-border);
}

.card-list li {
  font-size: 0.88rem;
  color: var(--color-text);
  padding: 4px 0 4px 14px;
  position: relative;
  line-height: 1.6;
}
.card-list li::before {
  content: '・';
  position: absolute;
  left: 0;
  color: var(--color-teal);
}

/* ===================================================
   代表挨拶
   =================================================== */
.section-greeting { background: var(--color-teal-bg); }

.greeting-text {
  border-left: 4px solid var(--color-teal);
  padding: 20px 24px;
  background: var(--color-white);
  border-radius: 0 var(--radius) var(--radius) 0;
  margin-bottom: 20px;
  box-shadow: var(--shadow);
}
.greeting-text p {
  color: var(--color-text);
  line-height: 2;
  font-size: 0.92rem;
}

.greeting-name {
  text-align: right;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-navy);
  padding-right: 8px;
}

/* ===================================================
   仕組み / PYRAMID
   =================================================== */
.pyramid-diagram {
  display: flex;
  flex-direction: column;
  gap: 0;
  max-width: 680px;
  margin: 0 auto;
}

.pyramid-top {
  background: var(--color-card-bg);
  border: 1px solid var(--color-border);
  padding: 24px 40px;
  text-align: center;
  clip-path: polygon(8% 0%, 92% 0%, 100% 100%, 0% 100%);
  border-radius: var(--radius) var(--radius) 0 0;
}

.pyramid-bottom {
  background: var(--color-teal-pale);
  border: 1px solid var(--color-teal);
  padding: 24px 20px 32px;
  text-align: center;
  clip-path: polygon(0% 0%, 100% 0%, 92% 100%, 8% 100%);
}

.pyramid-label {
  font-size: var(--size-h3);
  font-weight: 700;
  color: var(--color-navy);
  margin-bottom: 10px;
}

.pyramid-items {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 8px 20px;
}
.pyramid-items li {
  font-size: 0.88rem;
  color: var(--color-text);
}
.pyramid-items li::before { content: '・'; color: var(--color-teal); }

/* ===================================================
   e-ラーニング
   =================================================== */
.elearning-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  margin-bottom: 20px;
}

.elearning-card {
  background: var(--color-card-bg);
  border-radius: var(--radius);
  padding: 22px;
  border: 1px solid var(--color-border);
}

.elearning-card-title {
  font-size: var(--size-h3);
  font-weight: 700;
  color: var(--color-navy);
  margin-bottom: 16px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--color-teal-light);
}

.elearning-section { margin-bottom: 12px; }

.elearning-section-label {
  font-weight: 700;
  color: var(--color-teal-dark);
  font-size: 0.88rem;
  margin-bottom: 4px;
}

.elearning-note {
  font-size: 0.88rem;
  color: var(--color-text-light);
  line-height: 1.8;
  padding: 14px 18px;
  background: var(--color-white);
  border-left: 3px solid var(--color-teal);
  border-radius: 0 var(--radius) var(--radius) 0;
}

/* ===================================================
   お知らせ
   =================================================== */
.news-list {
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--color-white);
  box-shadow: var(--shadow);
}

.news-item {
  display: flex;
  align-items: center;
  gap: 24px;
  padding: 16px 22px;
  border-bottom: 1px solid var(--color-teal-pale);
  transition: background 0.2s;
}
.news-item:last-child { border-bottom: none; }
.news-item:hover { background: var(--color-teal-bg); }

.news-date {
  font-size: 0.82rem;
  color: var(--color-text-light);
  flex-shrink: 0;
  font-weight: 500;
  min-width: 90px;
}

.news-text {
  font-size: 0.9rem;
  color: var(--color-text);
}

/* ===================================================
   ログイン
   =================================================== */
.section-login { background: var(--color-teal-bg); }

.login-subtitle {
  font-size: 0.9rem;
  color: var(--color-text-light);
  margin-bottom: 20px;
  text-align: center;
}

.login-buttons {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

/* ===================================================
   会員ページ
   =================================================== */
.member-subtitle {
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-navy);
  text-align: center;
  margin-bottom: 10px;
}

.member-url {
  display: block;
  text-align: center;
  color: var(--color-teal-dark);
  text-decoration: underline;
  font-size: 0.9rem;
  margin-bottom: 10px;
  transition: color 0.2s;
}
.member-url:hover { color: var(--color-teal); }

.member-desc {
  text-align: center;
  font-size: 0.85rem;
  color: var(--color-text-light);
  margin-bottom: 24px;
}

.member-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

.member-card {
  background: var(--color-card-bg);
  border-radius: var(--radius);
  padding: 22px;
  border: 1px solid var(--color-border);
  text-align: center;
  transition: box-shadow 0.2s, transform 0.2s;
}
.member-card:hover { box-shadow: var(--shadow); transform: translateY(-2px); }

.member-card-title {
  font-size: var(--size-h3);
  font-weight: 700;
  color: var(--color-navy);
  margin-bottom: 12px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--color-teal-light);
}
.member-card p { font-size: 0.88rem; color: var(--color-text); line-height: 1.7; }

/* ===================================================
   TIMELINE
   =================================================== */
.timeline {
  position: relative;
  padding: 0 0 20px;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 50%;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(180deg, var(--color-teal-light), var(--color-teal-dark));
  transform: translateX(-50%);
}

.timeline-item {
  display: flex;
  align-items: flex-start;
  gap: 24px;
  margin-bottom: 32px;
  position: relative;
}

.timeline-left { flex-direction: row-reverse; }
.timeline-left .timeline-content { text-align: right; }
.timeline-right { flex-direction: row; }

.timeline-marker {
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-teal-light), var(--color-teal-dark));
  color: var(--color-white);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1rem;
  z-index: 1;
  box-shadow: 0 2px 10px rgba(30,122,143,0.30);
  position: relative;
}

.timeline-content {
  flex: 1;
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 16px 20px;
  box-shadow: var(--shadow);
}

.timeline-year {
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--color-teal-dark);
  margin-bottom: 8px;
  letter-spacing: 0.03em;
}

.timeline-content ul { padding: 0; }
.timeline-content li {
  font-size: 0.88rem;
  color: var(--color-text);
  line-height: 1.7;
  padding: 2px 0;
}
.timeline-left .timeline-content li::after { content: none; }
.timeline-left .timeline-content li::before { content: '・ '; color: var(--color-teal); }
.timeline-left .timeline-content ul { display: flex; flex-direction: column; align-items: flex-end; }
.timeline-right .timeline-content li::before { content: '・ '; color: var(--color-teal); }

/* ===================================================
   文部科学省委託事業
   =================================================== */
.section-mext {
  background: var(--color-teal-bg);
  border-bottom: none;
}

.mext-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  max-width: 860px;
  margin: 0 auto 24px;
}

.mext-card {
  background: var(--color-white);
  border-radius: var(--radius);
  padding: 24px;
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow);
}

.mext-card-title {
  font-size: var(--size-h3);
  font-weight: 700;
  color: var(--color-navy);
  margin-bottom: 12px;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--color-teal-light);
}
.mext-card p {
  font-size: 0.88rem;
  color: var(--color-text);
  line-height: 1.85;
}

.mext-report-label {
  text-align: center;
  font-size: 0.9rem;
  color: var(--color-text-light);
  margin-bottom: 6px;
}

.mext-coming {
  text-align: center;
  font-size: 0.85rem;
  color: var(--color-text-light);
  margin-bottom: 12px;
}

.mext-link {
  display: block;
  text-align: center;
  color: var(--color-teal-dark);
  text-decoration: underline;
  font-size: 0.9rem;
  font-weight: 500;
  transition: color 0.2s;
}
.mext-link:hover { color: var(--color-teal); }

/* ===================================================
   FOOTER
   =================================================== */
.site-footer {
  background: var(--color-navy);
  padding: 40px 0;
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: 12px;
}

.footer-logo-en {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--color-teal-light);
  letter-spacing: 0.04em;
}

.footer-logo-ja {
  font-size: 0.72rem;
  color: rgba(255,255,255,0.55);
}

.footer-copy {
  font-size: 0.75rem;
  color: rgba(255,255,255,0.45);
  letter-spacing: 0.02em;
}

/* ===================================================
   RESPONSIVE — TABLET (≤ 900px)
   =================================================== */
@media (max-width: 900px) {
  :root {
    --size-h1: 1.9rem;
    --size-h2: 1.4rem;
    --section-gap: 60px;
  }

  .nav-list { display: none; }
  .hamburger { display: flex; }
  .mobile-menu { display: block; }

  .hero-inner {
    flex-direction: column;
    text-align: center;
    gap: 36px;
  }

  .hero-content { text-align: center; }
  .hero-actions { justify-content: center; }

  .hero-logo-mark svg { width: 140px; height: 140px; }

  .card-grid { grid-template-columns: 1fr; }
  .elearning-grid { grid-template-columns: 1fr; }
  .member-grid { grid-template-columns: 1fr; }
  .mext-grid { grid-template-columns: 1fr; }

  .section-layout { gap: 28px; }
  .section-logo-col { width: 100px; }
}

/* ===================================================
   RESPONSIVE — MOBILE (≤ 600px)
   =================================================== */
@media (max-width: 600px) {
  :root {
    --size-h1: 1.55rem;
    --size-h2: 1.25rem;
    --section-gap: 48px;
  }

  .container { padding: 0 16px; }

  .header-inner { height: 58px; }
  .logo-ja { display: none; }

  .hero { padding: 56px 0 64px; }

  /* Stack logo col below on mobile */
  .section-layout {
    flex-direction: column;
    gap: 20px;
  }

  .section-logo-col {
    width: 100%;
    justify-content: flex-start;
  }

  .side-logo-mark {
    flex-direction: row;
    padding: 4px;
    gap: 8px;
  }
  .side-logo-mark svg { width: 48px; height: 48px; }

  .pyramid-top,
  .pyramid-bottom {
    clip-path: none;
    border-radius: var(--radius);
    padding: 20px;
  }
  .pyramid-bottom { margin-top: 4px; }

  /* Timeline mobile: single column */
  .timeline::before { left: 20px; }
  .timeline-item,
  .timeline-left { flex-direction: row; }
  .timeline-left .timeline-content { text-align: left; }
  .timeline-marker { width: 36px; height: 36px; font-size: 0.9rem; }
  .timeline-left .timeline-content li::after { content: none; }
  .timeline-left .timeline-content li::before { content: '・ '; color: var(--color-teal); }

  .login-buttons { flex-direction: column; }
  .btn-login { min-width: unset; width: 100%; }

  .footer-inner { flex-direction: column; text-align: center; }
}


/* ===================================================
   Sidebar Layout (multi-page)
   =================================================== */
body {
  background: #f7f9fb;
}

.page-shell {
  display: flex;
  min-height: 100vh;
}

.sidebar {
  width: 260px;
  min-width: 260px;
  background: #ffffff;
  border-right: 1px solid rgba(0,0,0,0.08);
  padding: 28px 20px;
  position: sticky;
  top: 0;
  align-self: flex-start;
  height: 100vh;
  overflow-y: auto;
}

.sidebar-brand {
  margin-bottom: 24px;
}

.sidebar-brand-link {
  display: inline-block;
  color: #123b45;
  font-weight: 700;
  font-size: 1.15rem;
  text-decoration: none;
  margin-bottom: 6px;
}

.sidebar-subtitle {
  margin: 0;
  color: #5d6b74;
  font-size: 0.92rem;
  line-height: 1.5;
}

.sidebar-nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.sidebar-nav li + li {
  margin-top: 8px;
}

.sidebar-link {
  display: block;
  padding: 10px 12px;
  border-radius: 10px;
  text-decoration: none;
  color: #22343c;
  font-weight: 500;
  line-height: 1.5;
}

.sidebar-link:hover {
  background: #eef5f7;
}

.sidebar-link.active {
  background: #123b45;
  color: #ffffff;
}

.page-main {
  flex: 1;
  min-width: 0;
  background: #f7f9fb;
}

.page-main .site-header {
  display: none;
}

.page-main .section:first-of-type {
  padding-top: 56px;
}

.only-content {
  width: 100%;
}

.member-actions {
  display: flex;
  justify-content: center;
  margin-top: 16px;
}

@media (max-width: 900px) {
  .page-shell {
    display: block;
  }

  .sidebar {
    width: 100%;
    min-width: 0;
    position: static;
    height: auto;
    padding: 18px 16px;
    border-right: none;
    border-bottom: 1px solid rgba(0,0,0,0.08);
  }

  .sidebar-nav ul {
    display: flex;
    gap: 8px;
    overflow-x: auto;
    padding-bottom: 4px;
  }

  .sidebar-nav li + li {
    margin-top: 0;
  }

  .sidebar-link {
    white-space: nowrap;
  }

  .page-main .section:first-of-type {
    padding-top: 32px;
  }
}


/* Sidebar menu display fix */
.sidebar-nav ul {
  display: block !important;
  align-items: stretch !important;
}

.sidebar-nav li {
  display: block;
  width: 100%;
}

.sidebar-nav li + li {
  margin-top: 8px;
}

@media (max-width: 900px) {
  .sidebar-nav ul {
    display: flex !important;
    align-items: center !important;
  }
}


/* v2 layout refinements */
.btn-disabled {
  pointer-events: none;
  cursor: default;
}

.page-main .section {
  padding-top: 36px;
}

.page-main .section:first-of-type {
  padding-top: 20px;
}

.page-main .section-layout {
  gap: 20px;
  align-items: flex-start;
}

.page-main .section-content {
  width: 100%;
}

.page-main .section-media {
  display: none;
}

@media (max-width: 900px) {
  .page-main .section:first-of-type {
    padding-top: 16px;
  }
}

/* layout fix: remove left empty space */
.section-layout {
  display: block !important;
}

.section-content {
  width: 100% !important;
}

/* member button color (different from board) */
.btn-member {
  background-color: #2f6fed;
  color: #fff;
  border: none;
}

.btn-member:hover {
  background-color: #2459c9;
}


/* activity history layout: year on left, content on right */
.timeline::before {
  display: none !important;
}

.timeline-marker {
  display: none !important;
}

.timeline-item,
.timeline-left,
.timeline-right {
  display: block !important;
  margin-bottom: 18px !important;
}

.timeline-left .timeline-content,
.timeline-right .timeline-content {
  text-align: left !important;
}

.timeline-content {
  display: grid !important;
  grid-template-columns: 170px 1fr !important;
  gap: 16px !important;
  align-items: start !important;
  background: transparent !important;
  border: none !important;
  box-shadow: none !important;
  border-radius: 0 !important;
  padding: 0 0 14px 0 !important;
  border-bottom: 1px solid #e7ecef !important;
}

.timeline-year {
  grid-column: 1 !important;
  margin: 0 !important;
  font-size: 0.95rem !important;
  line-height: 1.6 !important;
  font-weight: 700 !important;
  color: var(--color-teal-dark) !important;
  letter-spacing: 0 !important;
}

.timeline-content ul {
  grid-column: 2 !important;
  margin: 0 !important;
  padding: 0 !important;
  list-style: none !important;
}

.timeline-content li {
  padding: 0 0 2px 0 !important;
  line-height: 1.7 !important;
}

.timeline-left .timeline-content ul,
.timeline-right .timeline-content ul {
  display: block !important;
  align-items: initial !important;
}

.timeline-left .timeline-content li::before,
.timeline-right .timeline-content li::before {
  content: "・ " !important;
  color: var(--color-teal) !important;
}

@media (max-width: 700px) {
  .timeline-content {
    grid-template-columns: 1fr !important;
    gap: 6px !important;
  }

  .timeline-year,
  .timeline-content ul {
    grid-column: 1 !important;
  }
}


/* activity history style A: year badge + clean content */
.timeline-content {
  align-items: center !important;
}

.timeline-year {
  display: inline-flex !important;
  align-items: center !important;
  justify-content: center !important;
  min-height: 42px !important;
  padding: 8px 14px !important;
  background: #eef5f7 !important;
  border: 1px solid #d5e4e8 !important;
  border-radius: 999px !important;
  font-size: 0.9rem !important;
  line-height: 1.4 !important;
  white-space: nowrap !important;
}

.timeline-content ul {
  background: #ffffff !important;
  padding-top: 4px !important;
}

.timeline-content li {
  font-size: 0.92rem !important;
}

@media (max-width: 700px) {
  .timeline-year {
    display: inline-flex !important;
    width: fit-content !important;
    min-height: 0 !important;
    white-space: normal !important;
  }
}


/* final polish: achievements minimal elegant layout */
.timeline::before {
  display: none !important;
}

.timeline-marker {
  display: none !important;
}

.timeline-item,
.timeline-left,
.timeline-right {
  display: block !important;
  margin-bottom: 0 !important;
}

.timeline-left .timeline-content,
.timeline-right .timeline-content {
  text-align: left !important;
}

.timeline-content {
  display: grid !important;
  grid-template-columns: 190px 1fr !important;
  gap: 18px !important;
  align-items: start !important;
  background: transparent !important;
  border: none !important;
  box-shadow: none !important;
  border-radius: 0 !important;
  padding: 14px 0 !important;
  border-bottom: 1px solid #e3e7ea !important;
}

.timeline-year {
  display: block !important;
  min-height: 0 !important;
  width: auto !important;
  padding: 0 !important;
  background: transparent !important;
  border: none !important;
  border-radius: 0 !important;
  color: #2f3a40 !important;
  font-size: 0.95rem !important;
  font-weight: 600 !important;
  line-height: 1.7 !important;
  white-space: normal !important;
  letter-spacing: 0 !important;
  margin: 0 !important;
}

.timeline-content ul {
  grid-column: 2 !important;
  margin: 0 !important;
  padding: 0 !important;
  list-style: none !important;
  background: transparent !important;
}

.timeline-content li {
  font-size: 0.93rem !important;
  line-height: 1.8 !important;
  padding: 0 !important;
  color: var(--color-text) !important;
}

.timeline-left .timeline-content ul,
.timeline-right .timeline-content ul {
  display: block !important;
  align-items: initial !important;
}

.timeline-left .timeline-content li::before,
.timeline-right .timeline-content li::before {
  content: "・ " !important;
  color: var(--color-teal) !important;
}

@media (max-width: 700px) {
  .timeline-content {
    grid-template-columns: 1fr !important;
    gap: 6px !important;
  }
  .timeline-content ul {
    grid-column: 1 !important;
  }
}



.btn-member:hover {
  background: #2459c9 !important;
  color: #fff !important;
  border-color: #2459c9 !important;
}

/* member button = board button color */
.btn-member {
  background: linear-gradient(135deg, #4db6ac, #2f8f9d) !important;
  color: #ffffff !important;
  border: none !important;
  box-shadow: 0 4px 14px rgba(0,0,0,0.08);
}

.btn-member:hover {
  background: linear-gradient(135deg, #3aa79d, #267e8a) !important;
}

/* explicit member button style */
a.btn.btn-member,
.btn-member,
.hero-actions .btn-member {
  background: linear-gradient(135deg, #4db6ac, #2f8f9d) !important;
  color: #ffffff !important;
  border: none !important;
  box-shadow: 0 4px 14px rgba(0,0,0,0.08) !important;
}

a.btn.btn-member:hover,
.btn-member:hover,
.hero-actions .btn-member:hover {
  background: linear-gradient(135deg, #3aa79d, #267e8a) !important;
  color: #ffffff !important;
}

.page-title {
  font-size: 2rem;
  font-weight: 700;
  color: var(--color-text, #22343c);
  margin: 0 0 20px 0;
}


/* FIX: member button override */
.btn-member {
  display: inline-block !important;
  padding: 16px 40px !important;
  border-radius: 999px !important;
  background: linear-gradient(135deg, #4db6ac, #2f8f9d) !important;
  color: #ffffff !important;
  border: none !important;
  text-decoration: none !important;
}

/* outlineボタンを無効化 */
.btn-outline,
.btn-outline-primary,
.btn-secondary {
  background: transparent !important;
  border: none !important;
}

/* hover */
.btn-member:hover {
  background: linear-gradient(135deg, #3aa79d, #267e8a) !important;
  color: #ffffff !important;
}


/* === Diagram improvement === */
.pyramid-diagram {
  margin-top: 60px;
  position: relative;
}

/* arrow */
.pyramid-diagram::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 48%;
  transform: translateX(-50%);
  width: 20px;
  height: 60px;
  background: #3f6f77;
  box-shadow: 0 4px 10px rgba(0,0,0,0.15);
}

.pyramid-diagram::before {
  content: "";
  position: absolute;
  left: 50%;
  top: calc(48% - 30px);
  transform: translateX(-50%);
  border-left: 20px solid transparent;
  border-right: 20px solid transparent;
  border-bottom: 30px solid #3f6f77;
}

/* emphasize top */
.pyramid-top {
  background: #ffffff;
  font-size: 1.05rem;
  padding: 28px 40px;
}

/* soften bottom */
.pyramid-bottom {
  opacity: 0.95;
}


/* remove pyramid arrow and rebalance spacing */
.pyramid-diagram::before,
.pyramid-diagram::after {
  content: none !important;
  display: none !important;
}

.pyramid-diagram {
  margin-top: 72px !important;
  gap: 18px !important;
}

.pyramid-top {
  background: #ffffff !important;
  padding: 30px 40px !important;
}

.pyramid-bottom {
  opacity: 0.95 !important;
  padding: 26px 20px 32px !important;
}

/* remove gap completely */
.pyramid-diagram {
  gap: 0 !important;
}

.pyramid-top {
  margin-bottom: 0 !important;
}

.pyramid-bottom {
  margin-top: 0 !important;
}