/* ========================================
   CSS Variables
======================================== */
:root {
  --color-primary: #d4a0c5;
  --color-primary-light: #f2d4ec;
  --color-primary-dark: #ad6898;
  --color-accent: #8c4878;
  --color-text: #333333;
  --color-text-light: #666666;
  --color-bg: #ffffff;
  --color-bg-light: #fef6fb;
  --color-bg-section: #faeaf6;
  --font-jp: 'Noto Sans JP', sans-serif;
  --font-en: 'Montserrat', sans-serif;
  --font-base: 18px;
  --max-width: 1200px;
  --radius: 12px;
  --shadow: 0 4px 24px rgba(212, 160, 197, 0.20);
  --transition: 0.3s ease;
}

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

html {
  font-size: var(--font-base);
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-jp);
  color: var(--color-text);
  background-color: var(--color-bg);
  line-height: 1.8;
}

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

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

ul {
  list-style: none;
}

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

.section {
  padding: 80px 0;
}

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

.section-title {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--color-accent);
  line-height: 1.4;
  position: relative;
  display: inline-block;
  padding-bottom: 16px;
}

.section-lead {
  margin-top: 16px;
  font-size: 0.9rem;
  color: var(--color-text-light);
  line-height: 1.8;
}

.section-title::after {
  content: '';
  display: block;
  width: 60px;
  height: 3px;
  background: var(--color-primary);
  margin: 12px auto 0;
  border-radius: 2px;
}

/* ========================================
   Fade-in Animation
======================================== */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(24px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.fade-in-up {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

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

/* ========================================
   Global Navigation
======================================== */
.global-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--color-primary-light);
  box-shadow: 0 2px 12px rgba(212, 160, 197, 0.14);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: 0 24px;
  height: 64px;
}

.nav-right {
}

.nav-logo a {
  display: flex;
  align-items: center;
}

.nav-logo img {
  height: 36px;
  width: auto;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav-links li a {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-text);
  position: relative;
  padding-bottom: 2px;
  transition: color var(--transition);
}

.nav-links li a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-primary);
  transition: width var(--transition);
}

.nav-links li a:hover {
  color: var(--color-accent);
}

.nav-links li a:hover::after {
  width: 100%;
}

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  background: none;
  border: none;
  padding: 4px;
}

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

/* ========================================
   First View (FV)
======================================== */
.fv {
  display: grid;
  position: relative;
  width: 100%;
  overflow: hidden;
  margin-top: 64px;
}

.fv > picture {
  grid-area: 1 / 1;
  display: block;
}

.fv-bg {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

.fv-inner {
  grid-area: 1 / 1;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-start;
  text-align: center;
  padding: 80px 24px 60px;
  animation: fadeInUp 0.9s ease both;
}

.fv-title-group {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  margin-right: 40%;
}

.fv-badge {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 180px;
  height: 180px;
  border-radius: 50%;
  background: rgba(140, 72, 120, 0.85);
  border: 2px solid rgba(212, 160, 197, 0.8);
  backdrop-filter: blur(4px);
  font-family: var(--font-jp);
  font-size: 1.9rem;
  font-weight: 700;
  color: #ffffff;
  letter-spacing: 0.05em;
  line-height: 1.4;
  text-align: center;
  margin: 0 0 16px 0;
  box-shadow: 0 4px 20px rgba(0,0,0,0.15);
}

.fv-badge::after {
  content: '';
  position: absolute;
  bottom: 13px;
  left: 130px;
  width: 0;
  height: 0;
  border-bottom: 22px solid rgba(255, 255, 255, 1);
  border-left: 22px solid transparent;
}

.fv h1 {
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 700;
  color: #333333;
  line-height: 1.35;
  letter-spacing: 0.04em;
}

.fv h1 span.en {
  font-family: var(--font-en);
  font-weight: 700;
  letter-spacing: 0.08em;
}

.fv-sub {
  margin-top: 20px;
  color: rgba(255,255,255,0.9);
  font-size: 1rem;
  letter-spacing: 0.05em;
}

.fv-scroll {
  position: absolute;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 1;
  color: rgba(255,255,255,0.8);
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  font-family: var(--font-en);
  text-transform: uppercase;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}

.fv-scroll::after {
  content: '';
  display: block;
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, rgba(255,255,255,0.8), transparent);
  animation: scrollLine 1.5s ease infinite;
}

@keyframes scrollLine {
  0% { transform: scaleY(0); transform-origin: top; }
  50% { transform: scaleY(1); transform-origin: top; }
  50.01% { transform: scaleY(1); transform-origin: bottom; }
  100% { transform: scaleY(0); transform-origin: bottom; }
}

/* ========================================
   Lead Section
======================================== */
.lead-section {
  background: var(--color-primary-dark);
  padding: 40px 0;
}

.lead-text {
  max-width: 800px;
  margin: 0 auto;
  font-size: 1.05rem;
  font-weight: 700;
  line-height: 2;
  color: #ffffff;
  text-align: center;
}

/* ========================================
   Seminars Section
======================================== */
.seminars-section {
  background-color: var(--color-bg-light);
}

.seminars-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
}

.seminar-card {
  background: var(--color-bg);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: transform var(--transition), box-shadow var(--transition);
  display: flex;
  flex-direction: column;
}

.seminar-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 32px rgba(212, 160, 197, 0.30);
}

.seminar-card-banner {
  display: block;
  overflow: hidden;
}

.seminar-card-banner img {
  width: 100%;
  aspect-ratio: 16/9;
  object-fit: cover;
  transition: transform var(--transition);
}

.seminar-card:hover .seminar-card-banner img {
  transform: scale(1.03);
}

.seminar-card-body {
  padding: 24px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.seminar-card-body h3 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--color-accent);
  margin-bottom: 8px;
  line-height: 1.45;
}

.seminar-catchcopy {
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--color-accent);
  margin-bottom: 10px;
  line-height: 1.5;
}

.seminar-instructor {
  display: flex;
  flex-direction: row;
  align-items: flex-start;
  flex-wrap: nowrap;
  gap: 0 6px;
  font-family: var(--font-jp);
  margin-bottom: 14px;
  background: var(--color-bg-light);
  border-left: 3px solid var(--color-primary);
  padding: 8px 12px;
  border-radius: 0 6px 6px 0;
}

.seminar-instructor::before {
  content: '講師';
  font-size: 0.65rem;
  font-weight: 700;
  color: var(--color-primary-dark);
  letter-spacing: 0.08em;
  white-space: nowrap;
  flex-shrink: 0;
  padding-top: 2px;
}

.instructor-body {
  flex: 1;
  min-width: 0;
  line-height: 1.6;
}

.instructor-body > span {
  font-family: var(--font-jp);
  font-weight: 700;
  font-size: 0.875rem;
  color: var(--color-accent);
}

.instructor-affiliation {
  font-size: 0.7rem;
  color: var(--color-text-light);
  font-style: normal;
  white-space: normal;
  word-break: break-all;
}

.seminar-instructor--multi {
  flex-direction: column;
}

.instructor-list {
  display: flex;
  flex-direction: column;
  gap: 5px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.instructor-list li {
  display: flex;
  align-items: flex-start;
  flex-wrap: nowrap;
  gap: 0 4px;
}

.instructor-list li::before {
  content: '・';
  color: var(--color-primary-dark);
  font-size: 0.75rem;
  flex-shrink: 0;
}

.instructor-list .instructor-body {
  flex: 1;
  min-width: 0;
  line-height: 1.6;
}

.seminar-description {
  font-size: 0.8rem;
  color: var(--color-text-light);
  line-height: 1.8;
  flex: 1;
  margin-bottom: 16px;
}

.seminar-cta {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  width: 100%;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  color: #ffffff;
  font-size: 1rem;
  font-weight: 700;
  padding: 16px 32px;
  border-radius: 40px;
  transition: opacity var(--transition), transform var(--transition);
  letter-spacing: 0.06em;
  box-sizing: border-box;
}

.seminar-cta:hover {
  opacity: 0.88;
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.18);
}

.seminar-cta::after {
  content: '→';
  font-family: var(--font-en);
}

.seminar-target {
  position: relative;
  font-size: 0.78rem;
  color: var(--color-text);
  line-height: 1.7;
  background: linear-gradient(135deg, #fef0f9 0%, #f8e0f2 100%);
  border-radius: 8px;
  padding: 12px 14px 12px 18px;
  margin-bottom: 16px;
  overflow: hidden;
}

.seminar-target::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  background: linear-gradient(180deg, var(--color-primary) 0%, var(--color-accent) 100%);
  border-radius: 8px 0 0 8px;
}

.target-label {
  display: block;
  font-size: 0.65rem;
  font-weight: 700;
  color: var(--color-primary-dark);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 4px;
  opacity: 0.85;
}

/* ========================================
   Features Section
======================================== */
.features-section {
  background: var(--color-bg);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.feature-item {
  text-align: center;
  padding: 40px 24px;
  background: var(--color-bg-light);
  border-radius: var(--radius);
  border-top: 4px solid var(--color-primary);
  transition: box-shadow var(--transition), transform var(--transition);
}

.feature-item:hover {
  box-shadow: var(--shadow);
  transform: translateY(-2px);
}

.feature-icon {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-primary-light) 0%, var(--color-primary) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
  font-size: 1.75rem;
}

.feature-title {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--color-accent);
  margin-bottom: 12px;
}

.feature-desc {
  font-size: 0.875rem;
  color: var(--color-text-light);
  line-height: 1.8;
}

.features-note {
  margin-top: 24px;
  text-align: right;
  font-size: 0.8rem;
  color: var(--color-text-light);
}

/* ========================================
   Voices Section
======================================== */
.voices-section {
  background: var(--color-bg-section);
}

.voices-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
  max-width: 800px;
  margin: 0 auto;
}

.voice-item {
  display: flex;
  gap: 16px;
  align-items: flex-start;
}

.voice-avatar {
  flex-shrink: 0;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  overflow: hidden;
  border: 3px solid var(--color-primary-light);
}

.voice-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.voice-bubble {
  flex: 1;
  background: var(--color-bg);
  border-radius: 0 var(--radius) var(--radius) var(--radius);
  padding: 20px;
  box-shadow: var(--shadow);
  position: relative;
}

.voice-bubble::before {
  content: '';
  position: absolute;
  top: 12px;
  left: -12px;
  border: 6px solid transparent;
  border-right-color: var(--color-bg);
}

.voice-bubble h3 {
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--color-primary-dark);
  margin-bottom: 8px;
  line-height: 1.45;
  transition: color var(--transition);
}

.voice-bubble h3 a {
  color: var(--color-primary-dark);
  text-decoration: underline;
  text-decoration-color: transparent;
  transition: text-decoration-color var(--transition), color var(--transition);
}

.voice-bubble h3 a:hover {
  color: var(--color-accent);
  text-decoration-color: var(--color-accent);
}

.voice-bubble p {
  font-size: 0.875rem;
  color: var(--color-text);
  line-height: 1.75;
  margin-bottom: 10px;
}

.voice-meta {
  font-size: 0.75rem;
  color: var(--color-text-light);
  font-family: var(--font-en);
}

.voice-meta span {
  font-family: var(--font-jp);
}

/* ========================================
   Knowledge Section
======================================== */
.knowledge-section {
  background: var(--color-bg);
}

.knowledge-section:nth-of-type(even) {
  background: var(--color-bg-light);
}

.knowledge-block {
  max-width: 800px;
  margin: 0 auto 48px;
  padding: 36px 40px;
  background: var(--color-bg);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  border-left: 4px solid var(--color-primary);
}

.knowledge-block:last-child {
  margin-bottom: 0;
}

.knowledge-block h3 {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--color-accent);
  margin-bottom: 16px;
  padding-bottom: 10px;
  border-bottom: 1px dashed var(--color-primary-light);
}

.knowledge-block p {
  font-size: 0.9375rem;
  line-height: 1.85;
  color: var(--color-text);
}

.knowledge-block dl {
  margin-top: 16px;
}

.knowledge-block dl > div {
  margin-bottom: 20px;
  padding: 16px;
  background: var(--color-bg-light);
  border-radius: 8px;
}

.knowledge-block dl > div:last-child {
  margin-bottom: 0;
}

.knowledge-block dt {
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--color-primary-dark);
  margin-bottom: 6px;
}

.knowledge-block dd {
  font-size: 0.875rem;
  color: var(--color-text);
  line-height: 1.85;
  padding-left: 1em;
}

.knowledge-note {
  margin-top: 16px !important;
  padding: 14px 18px;
  background: linear-gradient(135deg, var(--color-primary-light) 0%, #ead8e8 100%);
  border-radius: 8px;
  font-size: 0.875rem !important;
  color: var(--color-accent) !important;
  font-weight: 500;
}

/* ========================================
   Footer
======================================== */
.site-footer {
  background: var(--color-accent);
  color: rgba(255,255,255,0.85);
  text-align: center;
  padding: 40px 24px;
}

.footer-logo {
  margin: 0 auto 16px;
}

.footer-logo img {
  height: 32px;
  width: auto;
  filter: brightness(0) invert(1);
  opacity: 0.8;
  margin: 0 auto;
}

.footer-links {
  display: flex;
  justify-content: center;
  gap: 24px;
  margin-bottom: 20px;
  flex-wrap: wrap;
}

.footer-links a {
  font-size: 0.8125rem;
  color: rgba(255,255,255,0.75);
  transition: color var(--transition);
}

.footer-links a:hover {
  color: #ffffff;
}

.footer-copy {
  font-size: 0.75rem;
  font-family: var(--font-en);
  color: rgba(255,255,255,0.55);
}

/* ========================================
   Responsive — 768px breakpoint
======================================== */
.sp-only {
  display: none;
}

@media (min-width: 769px) and (max-width: 1200px) {
  .fv-inner {
    padding-top: 40px;
  }

  .fv-badge {
    width: 130px;
    height: 130px;
    font-size: 1.3rem;
    margin-bottom: 12px;
  }

  .fv-badge::after {
    bottom: 10px;
    left: 94px;
    border-bottom-width: 16px;
    border-left-width: 16px;
  }
}

@media (max-width: 767px) {
  .sp-only {
    display: inline;
  }
}

@media (max-width: 768px) {
  .section {
    padding: 56px 0;
  }

  .section-title {
    font-size: 1.375rem;
  }

  /* Nav */
  .nav-links {
    display: none;
    flex-direction: column;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    background: rgba(255,255,255,0.98);
    border-bottom: 1px solid var(--color-primary-light);
    padding: 16px 24px;
    gap: 16px;
    box-shadow: 0 8px 20px rgba(212,160,197,0.17);
  }

  .nav-links.open {
    display: flex;
  }

  .hamburger {
    display: flex;
  }

  /* FV */
  .fv-inner {
    padding-top: 24px;
    justify-content: flex-start;
  }

  .fv-title-group {
    align-items: flex-start;
    margin-right: 0;
    width: 100%;
  }

  .fv-badge {
    width: 88px;
    height: 88px;
    font-size: 0.8rem;
  }

  .fv-badge::after {
    bottom: 6px;
    left: 63px;
    border-bottom-width: 11px;
    border-left-width: 11px;
  }

  .fv h1 {
    font-size: 1.8rem;
    text-align: center;
    width: 100%;
  }

  /* Seminars */
  .seminars-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  /* Features */
  .features-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  /* Voices */
  .voices-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  /* Knowledge */
  .knowledge-block {
    padding: 24px 20px;
  }
}

@media (max-width: 480px) {
  .voice-item {
    flex-direction: column;
  }

  .voice-bubble::before {
    display: none;
  }

  .voice-bubble {
    border-radius: var(--radius);
  }

  .seminar-card-body {
    padding: 16px;
  }
}