/*
Theme Name: Yokohama IVR Theme
Theme URI: https://example.com
Author: 一般社団法人 横浜画像診断・IVR研究会
Author URI: https://example.com
Description: 一般社団法人 横浜画像診断・IVR研究会 公式サイト テーマ
Version: 1.0.0
License: GNU General Public License v2 or later
Text Domain: yokohama-ivr
*/

/* ======================================
   0. Google Fonts & Root Variables
====================================== */
@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+JP:wght@300;400;500;700&family=Outfit:wght@300;400;600;700&display=swap');

:root {
  --color-primary: #0A3D6B;
  --color-secondary: #1E7CB8;
  --color-accent: #5BB8F5;
  --color-accent-light: #A8D8F0;
  --color-bg: #F0F7FF;
  --color-bg2: #E3F0FB;
  --color-white: #FFFFFF;
  --color-text: #1A1A2E;
  --color-text-light: #4A5568;
  --color-border: #C8E0F4;

  --font-ja: 'Noto Sans JP', sans-serif;
  --font-en: 'Outfit', sans-serif;

  --shadow-sm: 0 2px 8px rgba(10, 61, 107, 0.10);
  --shadow-md: 0 4px 20px rgba(10, 61, 107, 0.15);
  --shadow-lg: 0 8px 40px rgba(10, 61, 107, 0.20);

  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 24px;

  --transition: all 0.3s ease;
  --max-width: 1140px;
  --header-height: 72px;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-ja);
  color: var(--color-text);
  background: var(--color-white);
  line-height: 1.8;
  overflow-x: hidden;
}

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

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

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

h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-ja);
  font-weight: 700;
  line-height: 1.4;
  color: var(--color-primary);
}

ul {
  list-style: none;
}

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

.section {
  padding: 80px 0;
}

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

.section-dark {
  background: var(--color-primary);
  color: var(--color-white);
}

.section-title {
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 8px;
  position: relative;
}

.section-title-en {
  font-family: var(--font-en);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-accent);
  display: block;
  margin-bottom: 8px;
}

.section-header {
  text-align: center;
  margin-bottom: 56px;
}

.section-header::after {
  content: '';
  display: block;
  width: 56px;
  height: 3px;
  background: linear-gradient(90deg, var(--color-secondary), var(--color-accent));
  margin: 16px auto 0;
  border-radius: 2px;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: 50px;
  font-weight: 600;
  font-size: 0.9rem;
  letter-spacing: 0.05em;
  transition: var(--transition);
  cursor: pointer;
  border: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-secondary), var(--color-primary));
  color: var(--color-white);
  box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  color: var(--color-white);
}

.btn-outline {
  background: transparent;
  color: var(--color-secondary);
  border: 2px solid var(--color-secondary);
}

.btn-outline:hover {
  background: var(--color-secondary);
  color: var(--color-white);
  transform: translateY(-2px);
}

.btn-white {
  background: var(--color-white);
  color: var(--color-primary);
  box-shadow: var(--shadow-sm);
}

.btn-white:hover {
  background: var(--color-accent-light);
  transform: translateY(-2px);
  color: var(--color-primary);
}

/* ======================================
   3. Header & Navigation
====================================== */
#site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  height: var(--header-height);
  background: rgba(10, 61, 107, 0.95);
  backdrop-filter: blur(12px);
  box-shadow: 0 2px 20px rgba(10, 61, 107, 0.3);
  transition: var(--transition);
}

/* WordPress管理バー表示時にヘッダーを下にずらす */
.admin-bar #site-header {
  top: 32px;
}

@media screen and (max-width: 782px) {
  .admin-bar #site-header {
    top: 46px;
  }
}

#site-header.scrolled {
  background: rgba(10, 61, 107, 0.98);
  box-shadow: var(--shadow-lg);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: nowrap;
  height: var(--header-height);
  gap: 16px;
}

.site-logo {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.site-logo .logo-en {
  font-family: var(--font-en);
  font-size: 0.65rem;
  font-weight: 600;
  color: var(--color-accent);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.site-logo .logo-ja {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--color-white);
  line-height: 1.2;
}

.site-logo:hover {
  opacity: 0.9;
}

/* Desktop Nav */
#site-nav {
  display: flex;
  align-items: center;
}

#site-nav ul {
  display: flex;
  align-items: center;
  gap: 0;
  list-style: none;
  padding: 0;
  margin: 0;
}

#site-nav ul li {
  display: flex;
  align-items: center;
}

#site-nav a,
#site-nav ul li a {
  color: rgba(255, 255, 255, 0.85);
  font-size: 0.78rem;
  font-weight: 500;
  padding: 8px 10px;
  border-radius: var(--radius-sm);
  letter-spacing: 0.02em;
  position: relative;
  transition: var(--transition);
  white-space: nowrap;
}

#site-nav a::after,
#site-nav ul li a::after {
  content: '';
  position: absolute;
  bottom: 4px;
  left: 10px;
  right: 10px;
  height: 2px;
  background: var(--color-accent);
  transform: scaleX(0);
  transition: var(--transition);
  border-radius: 1px;
}

#site-nav a:hover,
#site-nav ul li a:hover,
#site-nav a.current-menu-item,
#site-nav ul li.current-menu-item>a,
#site-nav ul li.current_page_item>a {
  color: var(--color-white);
}

#site-nav a:hover::after,
#site-nav ul li a:hover::after,
#site-nav a.current-menu-item::after,
#site-nav ul li.current-menu-item>a::after,
#site-nav ul li.current_page_item>a::after {
  transform: scaleX(1);
}

/* お問い合わせボタン */
#site-nav ul li:last-child>a {
  background: linear-gradient(135deg, var(--color-accent), var(--color-secondary)) !important;
  color: var(--color-white) !important;
  border-radius: 50px !important;
  padding: 7px 16px !important;
  font-weight: 600 !important;
}

#site-nav ul li:last-child>a::after {
  display: none !important;
}

#site-nav ul li:last-child>a:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 15px rgba(91, 184, 245, 0.4);
}

.nav-contact-btn {
  background: linear-gradient(135deg, var(--color-accent), var(--color-secondary)) !important;
  color: var(--color-white) !important;
  border-radius: 50px !important;
  padding: 8px 20px !important;
  font-weight: 600 !important;
}

.nav-contact-btn::after {
  display: none !important;
}

.nav-contact-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 15px rgba(91, 184, 245, 0.4);
}

/* Hamburger Menu */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 8px;
  background: none;
  border: none;
}

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

.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 Nav */
.mobile-nav {
  display: none;
  position: fixed;
  top: var(--header-height);
  left: 0;
  width: 100%;
  background: var(--color-primary);
  padding: 16px 0 24px;
  box-shadow: var(--shadow-lg);
  z-index: 999;
  transform: translateY(-10px);
  opacity: 0;
  transition: var(--transition);
  pointer-events: none;
}

.mobile-nav.open {
  transform: translateY(0);
  opacity: 1;
  pointer-events: all;
  display: block;
}

.mobile-nav a {
  display: block;
  color: rgba(255, 255, 255, 0.85);
  font-size: 1rem;
  padding: 14px 24px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  transition: var(--transition);
}

.mobile-nav a:hover {
  background: rgba(255, 255, 255, 0.05);
  color: var(--color-white);
  padding-left: 32px;
}

/* ======================================
   4. Hero Slider
====================================== */
#hero {
  position: relative;
  height: 100vh;
  min-height: 600px;
  overflow: hidden;
  margin-top: var(--header-height);
}

.hero-swiper {
  width: 100%;
  height: 100%;
}

.hero-swiper .swiper-slide {
  position: relative;
  overflow: hidden;
}

.hero-swiper .swiper-slide img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transform: scale(1.05);
  transition: transform 6s ease;
}

.hero-swiper .swiper-slide-active img {
  transform: scale(1);
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg,
      rgba(10, 61, 107, 0.72) 0%,
      rgba(30, 124, 184, 0.45) 50%,
      rgba(10, 61, 107, 0.60) 100%);
  z-index: 1;
}

.hero-content {
  position: absolute;
  bottom: 15%;
  left: 50%;
  transform: translateX(-50%);
  width: 90%;
  max-width: 900px;
  text-align: center;
  z-index: 2;
  color: var(--color-white);
}

.hero-badge {
  display: inline-block;
  background: rgba(91, 184, 245, 0.25);
  border: 1px solid rgba(91, 184, 245, 0.5);
  color: var(--color-accent-light);
  font-family: var(--font-en);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  padding: 6px 18px;
  border-radius: 50px;
  margin-bottom: 20px;
  backdrop-filter: blur(8px);
}

.hero-title {
  font-size: clamp(1.6rem, 4.5vw, 3rem);
  font-weight: 700;
  color: var(--color-white);
  line-height: 1.4;
  margin-bottom: 16px;
  text-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
}

.hero-title span {
  color: var(--color-accent);
}

.hero-title .hero-red {
  color: #FF3B3B;
  text-shadow: 0 2px 20px rgba(255, 59, 59, 0.4);
}

.hero-subtitle {
  font-size: clamp(0.9rem, 2vw, 1.1rem);
  color: rgba(255, 255, 255, 0.85);
  margin-bottom: 32px;
  font-weight: 300;
  letter-spacing: 0.05em;
}

.hero-buttons {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

/* Swiper Pagination */
.hero-swiper .swiper-pagination-bullet {
  background: rgba(255, 255, 255, 0.5);
  opacity: 1;
  width: 8px;
  height: 8px;
  transition: var(--transition);
}

.hero-swiper .swiper-pagination-bullet-active {
  background: var(--color-accent);
  width: 28px;
  border-radius: 4px;
}

/* Scroll indicator */
.scroll-indicator {
  position: absolute;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.7rem;
  font-family: var(--font-en);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  animation: bounce 2s infinite;
}

.scroll-indicator::before {
  content: '';
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, transparent, rgba(255, 255, 255, 0.6));
}

@keyframes bounce {

  0%,
  100% {
    transform: translateX(-50%) translateY(0);
  }

  50% {
    transform: translateX(-50%) translateY(-6px);
  }
}

/* ======================================
   5. News Section
====================================== */
.news-tabs {
  display: flex;
  gap: 8px;
  margin-bottom: 32px;
  flex-wrap: wrap;
}

.news-tab {
  padding: 8px 20px;
  border-radius: 50px;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  border: 2px solid var(--color-border);
  background: transparent;
  color: var(--color-text-light);
  transition: var(--transition);
}

.news-tab.active,
.news-tab:hover {
  background: var(--color-secondary);
  border-color: var(--color-secondary);
  color: var(--color-white);
}

.news-list {
  display: flex;
  flex-direction: column;
  gap: 0;
  border-top: 1px solid var(--color-border);
}

.news-item {
  display: grid;
  grid-template-columns: 130px auto 1fr;
  align-items: center;
  gap: 16px;
  padding: 18px 0;
  border-bottom: 1px solid var(--color-border);
  transition: var(--transition);
}

.news-item:hover {
  background: var(--color-bg2);
  margin: 0 -12px;
  padding: 18px 12px;
}

.news-date {
  font-family: var(--font-en);
  font-size: 0.85rem;
  color: var(--color-text-light);
  font-weight: 500;
}

.news-cat {
  display: inline-block;
  padding: 3px 12px;
  border-radius: 50px;
  font-size: 0.72rem;
  font-weight: 600;
  background: var(--color-bg2);
  color: var(--color-secondary);
  border: 1px solid var(--color-border);
  white-space: nowrap;
}

.news-title-link {
  font-size: 0.92rem;
  color: var(--color-text);
  line-height: 1.6;
  transition: var(--transition);
}

.news-title-link:hover {
  color: var(--color-secondary);
}

.news-more {
  text-align: center;
  margin-top: 32px;
}

/* ======================================
   6. About Section (Top)
====================================== */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.about-image-wrap {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.about-image-wrap::before {
  content: '';
  position: absolute;
  inset: -4px;
  background: linear-gradient(135deg, var(--color-accent), var(--color-secondary));
  border-radius: calc(var(--radius-lg) + 4px);
  z-index: -1;
}

.about-image-wrap img {
  width: 100%;
  height: 360px;
  object-fit: cover;
  border-radius: var(--radius-lg);
}

.about-text .section-title {
  text-align: left;
}

.about-text .section-title-en {
  display: block;
}

.about-text p {
  color: var(--color-text-light);
  margin-bottom: 24px;
  line-height: 1.9;
}

/* ======================================
   7. Features / Mission Cards
====================================== */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.feature-card {
  background: var(--color-white);
  border-radius: var(--radius-md);
  padding: 36px 28px;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-border);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--color-secondary), var(--color-accent));
}

.feature-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-accent-light);
}

.feature-icon {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, var(--color-accent-light), var(--color-bg2));
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  font-size: 1.6rem;
}

.feature-card h3 {
  font-size: 1.05rem;
  margin-bottom: 12px;
  color: var(--color-primary);
}

.feature-card p {
  font-size: 0.88rem;
  color: var(--color-text-light);
  line-height: 1.8;
}

/* ======================================
   8. Seminar Section
====================================== */
.seminar-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.seminar-card {
  background: var(--color-white);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-border);
  transition: var(--transition);
  display: flex;
  gap: 0;
}

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

.seminar-date-block {
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  color: var(--color-white);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 20px 20px;
  min-width: 88px;
  text-align: center;
}

.seminar-date-block .month {
  font-family: var(--font-en);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  opacity: 0.85;
}

.seminar-date-block .day {
  font-family: var(--font-en);
  font-size: 2rem;
  font-weight: 700;
  line-height: 1;
}

.seminar-date-block .year {
  font-family: var(--font-en);
  font-size: 0.72rem;
  opacity: 0.7;
}

.seminar-info {
  padding: 16px 20px;
  flex: 1;
}

.seminar-info h3 {
  font-size: 0.95rem;
  margin-bottom: 8px;
  color: var(--color-primary);
  line-height: 1.5;
}

.seminar-info p {
  font-size: 0.82rem;
  color: var(--color-text-light);
}

.seminar-tag {
  display: inline-block;
  background: var(--color-bg2);
  color: var(--color-secondary);
  border: 1px solid var(--color-border);
  border-radius: 50px;
  padding: 2px 10px;
  font-size: 0.72rem;
  font-weight: 600;
  margin-bottom: 8px;
}

/* ======================================
   9. Research / Activity Section
====================================== */
.research-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.research-card {
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-border);
  transition: var(--transition);
  background: var(--color-white);
}

.research-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
}

.research-card-img {
  aspect-ratio: 16/9;
  overflow: hidden;
  background: var(--color-bg2);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3rem;
}

.research-card-body {
  padding: 20px;
}

.research-card-body h3 {
  font-size: 0.95rem;
  margin-bottom: 10px;
  color: var(--color-primary);
}

.research-card-body p {
  font-size: 0.85rem;
  color: var(--color-text-light);
  line-height: 1.7;
}

/* ======================================
   10. CTA Banner Section
====================================== */
.cta-section {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
  position: relative;
  overflow: hidden;
}

.cta-section::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -10%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(91, 184, 245, 0.15) 0%, transparent 70%);
  pointer-events: none;
}

.cta-inner {
  text-align: center;
  color: var(--color-white);
}

.cta-inner h2 {
  font-size: clamp(1.3rem, 3vw, 1.8rem);
  color: var(--color-white);
  margin-bottom: 12px;
}

.cta-inner p {
  font-size: 1rem;
  opacity: 0.85;
  margin-bottom: 32px;
}

.cta-buttons {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

/* ======================================
   11. Access Section
====================================== */
.access-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: start;
}

.access-info h2 {
  font-size: 1.2rem;
  color: var(--color-primary);
  margin-bottom: 24px;
}

.access-detail {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.access-item {
  display: flex;
  gap: 12px;
  align-items: flex-start;
}

.access-item-icon {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--color-bg2);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  flex-shrink: 0;
  margin-top: 2px;
}

.access-item-text {
  font-size: 0.9rem;
  color: var(--color-text-light);
  line-height: 1.8;
}

.access-item-text strong {
  color: var(--color-primary);
  display: block;
  margin-bottom: 4px;
}

.access-map {
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  aspect-ratio: 4/3;
}

.access-map iframe {
  width: 100%;
  height: 100%;
  border: none;
}

/* ======================================
   12. Footer
====================================== */
#site-footer {
  background: var(--color-primary);
  color: rgba(255, 255, 255, 0.75);
  padding: 56px 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-logo {
  color: var(--color-white);
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 12px;
  display: block;
  line-height: 1.4;
}

.footer-desc {
  font-size: 0.85rem;
  line-height: 1.8;
  opacity: 0.75;
  margin-bottom: 20px;
}

.footer-info {
  font-size: 0.82rem;
  line-height: 2;
  opacity: 0.7;
}

.footer-col h4 {
  color: var(--color-accent);
  font-size: 0.85rem;
  font-family: var(--font-en);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 16px;
}

.footer-nav {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-nav a {
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.87rem;
  transition: var(--transition);
}

.footer-nav a:hover {
  color: var(--color-accent);
  padding-left: 6px;
}

.footer-bottom {
  padding: 16px 0;
  text-align: center;
  font-size: 0.8rem;
  opacity: 0.55;
  font-family: var(--font-en);
}

/* ======================================
   13. Page Templates
====================================== */
.page-hero {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
  color: var(--color-white);
  padding: 100px 0 60px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.page-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%235BB8F5' fill-opacity='0.08'%3E%3Ccircle cx='30' cy='30' r='4'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
  opacity: 0.6;
}

.page-hero-content {
  position: relative;
  z-index: 1;
}

.page-hero h1 {
  color: var(--color-white);
  font-size: clamp(1.5rem, 4vw, 2.5rem);
  margin-bottom: 8px;
}

.page-hero .breadcrumb {
  font-size: 0.85rem;
  opacity: 1;
  color: #fff;
  font-family: var(--font-en);
}

.page-content {
  padding: 80px 0;
}

/* Member Cards */
.member-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.member-card {
  background: var(--color-white);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-border);
  transition: var(--transition);
  text-align: center;
}

.member-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
}

.member-photo {
  background: linear-gradient(135deg, var(--color-bg2), var(--color-accent-light));
  height: 180px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 4rem;
  overflow: hidden;
}

.member-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.member-info {
  padding: 20px;
}

.member-role {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--color-secondary);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-family: var(--font-en);
  margin-bottom: 6px;
  display: block;
}

.member-name-ja {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 4px;
}

.member-name-en {
  font-size: 0.78rem;
  color: var(--color-text-light);
  font-family: var(--font-en);
  margin-bottom: 12px;
}

.member-spec {
  font-size: 0.8rem;
  color: var(--color-text-light);
  line-height: 1.7;
  padding-top: 12px;
  border-top: 1px solid var(--color-border);
}

/* ======================================
   14. Fade-in Animations
====================================== */
.fade-in {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

.fade-in-delay-1 {
  transition-delay: 0.1s;
}

.fade-in-delay-2 {
  transition-delay: 0.2s;
}

.fade-in-delay-3 {
  transition-delay: 0.3s;
}

.fade-in-delay-4 {
  transition-delay: 0.4s;
}

/* ======================================
   15. Responsive
====================================== */
@media (max-width: 1024px) {
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .research-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .about-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .about-image-wrap {
    max-width: 600px;
    margin: 0 auto;
  }

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

@media (max-width: 768px) {
  :root {
    --header-height: 64px;
  }

  #site-nav {
    display: none;
  }

  .hamburger {
    display: flex;
  }

  .section {
    padding: 60px 0;
  }

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

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

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

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

  .member-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

  .news-item {
    grid-template-columns: 1fr;
    gap: 6px;
  }

  .hero-buttons {
    flex-direction: column;
    align-items: center;
  }

  .page-hero {
    padding: 90px 0 50px;
  }
}

@media (max-width: 480px) {
  .member-grid {
    grid-template-columns: 1fr;
  }

  .hero-title {
    font-size: 1.4rem;
  }
}

/* ======================================
   Greeting Page (理事長挨拶)
====================================== */
.greeting-layout {
  display: grid;
  grid-template-columns: 340px 1fr;
  gap: 64px;
  align-items: flex-start;
}

.greeting-photo-wrap {
  position: sticky;
  top: calc(var(--header-height) + 24px);
}

.greeting-photo-inner {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.greeting-photo-inner::before {
  content: '';
  position: absolute;
  inset: -4px;
  background: linear-gradient(135deg, var(--color-accent), var(--color-secondary));
  border-radius: calc(var(--radius-lg) + 4px);
  z-index: -1;
}

.greeting-photo-inner img {
  width: 100%;
  height: 400px;
  object-fit: cover;
  object-position: top center;
  border-radius: var(--radius-lg);
  display: block;
}

.greeting-photo-caption {
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  border-radius: var(--radius-md);
  padding: 20px 24px;
  margin-top: 16px;
  text-align: center;
  color: var(--color-white);
}

.greeting-caption-title {
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  color: var(--color-accent-light);
  margin-bottom: 4px;
}

.greeting-caption-name {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--color-white);
  margin-bottom: 8px;
  letter-spacing: 0.05em;
}

.greeting-caption-sub {
  font-size: 0.78rem;
  color: rgba(255, 255, 255, 0.75);
  line-height: 1.7;
}

.greeting-text-wrap {
  padding-top: 8px;
}

.greeting-text-wrap p {
  color: var(--color-text-light);
  line-height: 2;
  margin-bottom: 28px;
  font-size: 0.96rem;
  text-align: justify;
}

.greeting-signature {
  margin-top: 48px;
  padding: 32px 36px;
  background: var(--color-bg);
  border-left: 4px solid var(--color-secondary);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
}

.greeting-sig-org {
  font-size: 0.82rem;
  color: var(--color-text-light);
  margin-bottom: 8px;
  line-height: 1.8;
}

.greeting-sig-title {
  font-size: 0.88rem;
  color: var(--color-secondary);
  font-weight: 600;
  margin-bottom: 4px;
}

.greeting-sig-name {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-primary);
  letter-spacing: 0.08em;
}

@media (max-width: 900px) {
  .greeting-layout {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .greeting-photo-wrap {
    position: static;
    max-width: 360px;
    margin: 0 auto;
  }
}