:root {
  color-scheme: light;
  --site-header-height: 112px;
  --bg: #faf9f8;
  --surface: #ffffff;
  --surface-strong: #f8f7f6;
  --text: #1a1a1a;
  --text-light: #4a5568;
  --muted: #5b7c99;
  --accent: #ffb84d;
  --accent-gradient: linear-gradient(135deg, #ffb84d 0%, #ff9f66 100%);
  --accent-soft: rgba(255, 184, 77, 0.12);
  --border: rgba(0, 0, 0, 0.06);
  --border-light: rgba(0, 0, 0, 0.04);
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
  --shadow: 0 8px 32px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.08);
  --shadow-accent: 0 12px 40px rgba(255, 184, 77, 0.15);
  --gradient-subtle: linear-gradient(180deg, #ffffff 0%, #faf9f8 100%);
  --gradient-soft: linear-gradient(135deg, rgba(255, 184, 77, 0.08) 0%, rgba(255, 139, 97, 0.05) 100%);
  --gradient-premium: linear-gradient(135deg, rgba(255, 255, 255, 0.8) 0%, rgba(250, 249, 248, 0.6) 100%);
  --radius-sm: 12px;
  --radius-md: 20px;
  --radius-lg: 28px;
  --radius-xl: 36px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: 'Inter', sans-serif;
  background:
    radial-gradient(ellipse at 20% 0%, rgba(255, 184, 77, 0.04) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 50%, rgba(255, 159, 102, 0.03) 0%, transparent 40%),
    linear-gradient(180deg, #ffffff 0%, #f5f4f3 100%);
  color: var(--text);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

button, .button {
  border: none;
  font: inherit;
}

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 24px clamp(24px, 4vw, 60px);
  position: sticky;
  top: 0;
  z-index: 30;
  min-height: var(--site-header-height);
  backdrop-filter: blur(20px) saturate(200%);
  background: rgba(255, 255, 255, 0.95);
  border-bottom: 1px solid rgba(255, 184, 77, 0.15);
  box-shadow:
    0 1px 3px rgba(0, 0, 0, 0.02),
    0 8px 24px rgba(0, 0, 0, 0.03);
}

.brand {
  display: flex;
  align-items: center;
  gap: 16px;
}

.brand-mark {
  width: 56px;
  height: 56px;
  border-radius: 18px;
  display: grid;
  place-items: center;
  background: transparent;
}

.brand-logo {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.eyebrow {
  margin: 0 0 10px;
  text-transform: uppercase;
  letter-spacing: 0.3em;
  font-size: 0.68rem;
  font-weight: 700;
  color: var(--accent);
  text-shadow: 0 0 25px rgba(255, 184, 77, 0.4);
  position: relative;
  display: inline-block;
}

.eyebrow::after {
  content: '';
  position: absolute;
  bottom: -6px;
  left: 50%;
  transform: translateX(-50%);
  width: 20px;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
}

.site-nav {
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
}

.site-nav a {
  color: var(--muted);
  text-decoration: none;
  transition: color 0.2s ease;
}

.site-nav a:hover {
  color: var(--text);
}

.milestone-counter {
  grid-column: 1 / -1;
  display: flex;
  justify-content: center;
  gap: 40px;
  padding: 20px 0;
  margin-bottom: 20px;
  background: linear-gradient(135deg, rgba(255, 184, 77, 0.06) 0%, rgba(255, 139, 97, 0.04) 100%);
  border: 1px solid rgba(255, 184, 77, 0.15);
  border-radius: 20px;
  backdrop-filter: blur(12px);
  box-shadow: var(--shadow-sm);
}

.milestone-display {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding-right: 40px;
  border-right: 1px solid rgba(255, 184, 77, 0.3);
}

.milestone-label {
  font-size: 0.75rem;
  color: var(--muted);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  margin-bottom: 4px;
}

.milestone-count {
  font-size: 3rem;
  font-weight: 800;
  color: var(--accent);
  text-shadow: 0 0 30px rgba(255, 184, 77, 0.4);
  font-family: 'Inter', sans-serif;
}

.milestone-next {
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.milestone-next-label {
  font-size: 0.75rem;
  color: var(--muted);
  letter-spacing: 0.1em;
  margin-bottom: 4px;
}

.milestone-target {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text);
}

.milestone-celebration {
  animation: milestone-pulse 0.5s ease-in-out;
}

@keyframes milestone-pulse {
  0% { transform: scale(1); }
  50% { transform: scale(1.05); }
  100% { transform: scale(1); }
}

.hero {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 56px;
  align-items: center;
  min-height: calc(100vh - 140px);
  padding: 0 clamp(24px, 4vw, 60px) 80px;
  position: relative;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 80%;
  height: 200%;
  background:
    radial-gradient(ellipse at center, rgba(255, 184, 77, 0.08) 0%, transparent 60%),
    radial-gradient(ellipse at 70% 30%, rgba(255, 159, 102, 0.06) 0%, transparent 40%);
  pointer-events: none;
  z-index: -1;
  filter: blur(40px);
}

.hero-copy h2 {
  font-size: clamp(2.8rem, 5vw, 4.5rem);
  line-height: 1.05;
  margin: 0 0 28px;
  letter-spacing: -0.03em;
  font-weight: 800;
  background: linear-gradient(135deg, #1a1a1a 0%, #4a5568 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-copy p {
  max-width: 680px;
  line-height: 1.9;
  color: var(--muted);
  margin: 0 0 36px;
  font-size: 1.1rem;
  font-weight: 400;
}

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

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 18px 32px;
  border-radius: 999px;
  cursor: pointer;
  text-decoration: none;
  font-weight: 700;
  font-size: 0.95rem;
  letter-spacing: 0.01em;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
}

.button::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  border-radius: inherit;
  background: linear-gradient(180deg, rgba(255,255,255,0.2) 0%, transparent 50%);
  opacity: 0;
  transition: opacity 0.3s ease;
  pointer-events: none;
}

.button:hover::before {
  opacity: 1;
}

.button:hover {
  transform: translateY(-3px);
}

.button-primary {
  color: #08101f;
  background: linear-gradient(135deg, #ffb84d 0%, #ff9f66 100%);
  box-shadow:
    0 10px 30px rgba(255, 184, 77, 0.3),
    0 4px 12px rgba(255, 184, 77, 0.2),
    inset 0 1px 0 rgba(255, 255, 255, 0.3);
}

.button-primary:hover {
  box-shadow:
    0 16px 40px rgba(255, 184, 77, 0.4),
    0 8px 20px rgba(255, 184, 77, 0.25),
    inset 0 1px 0 rgba(255, 255, 255, 0.3);
  transform: translateY(-4px);
}

.button-secondary {
  color: var(--text);
  background: #ffffff;
  border: 1px solid rgba(0, 0, 0, 0.06);
  box-shadow:
    0 2px 8px rgba(0, 0, 0, 0.04),
    inset 0 1px 0 rgba(255, 255, 255, 0.8);
}

.button-secondary:hover {
  background: #faf9f8;
  border-color: rgba(0, 0, 0, 0.1);
  box-shadow:
    0 4px 12px rgba(0, 0, 0, 0.06),
    inset 0 1px 0 rgba(255, 255, 255, 0.8);
}

.hero-panel {
  display: grid;
  gap: 26px;
}

.panel-card {
  padding: 36px;
  border-radius: var(--radius-lg);
  border: 1px solid rgba(0, 0, 0, 0.04);
  background: var(--surface);
  box-shadow:
    var(--shadow),
    inset 0 1px 0 rgba(255, 255, 255, 0.6);
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  text-decoration: none;
  color: inherit;
  display: block;
}

.panel-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  border-radius: inherit;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.4) 0%, transparent 50%);
  opacity: 0;
  transition: opacity 0.4s ease;
  pointer-events: none;
}

.panel-card:hover {
  box-shadow:
    var(--shadow-lg),
    var(--shadow-accent),
    inset 0 1px 0 rgba(255, 255, 255, 0.6);
  transform: translateY(-4px);
}

.panel-card:hover::before {
  opacity: 1;
}

.panel-card-glow {
  background: linear-gradient(135deg, rgba(255, 184, 77, 0.1) 0%, rgba(255, 139, 97, 0.06) 100%);
  border-color: rgba(255, 184, 77, 0.2);
  box-shadow:
    var(--shadow),
    0 0 40px rgba(255, 184, 77, 0.1),
    inset 0 1px 0 rgba(255, 255, 255, 0.4);
}

.panel-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 16px;
  position: relative;
}

.panel-tag::before,
.panel-tag::after {
  content: '';
  width: 20px;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
}

.panel-card h3 {
  margin: 0 0 12px;
  font-size: 1.25rem;
}

.section-grid,
.section-dark,
.contact-section {
  padding: 80px clamp(24px, 4vw, 60px);
}

.section-grid {
  display: grid;
  gap: 34px;
}

.section-heading {
  max-width: 720px;
}

.section-heading h2,
.section-intro h2,
.contact-copy h2 {
  margin: 16px 0 24px;
  font-size: clamp(2.2rem, 4.5vw, 3.2rem);
  line-height: 1.2;
  letter-spacing: -0.02em;
  font-weight: 700;
}

.section-heading .eyebrow,
.section-intro .eyebrow {
  display: inline-block;
  margin-bottom: 12px;
}

.section-dark {
  background:
    radial-gradient(ellipse at 50% 0%, rgba(255, 184, 77, 0.04) 0%, transparent 50%),
    linear-gradient(180deg, #f8f7f6 0%, #f0efee 100%);
  border-top: 1px solid rgba(255, 184, 77, 0.08);
  border-bottom: 1px solid rgba(0, 0, 0, 0.04);
}

.feature-cards,
.member-grid {
  display: grid;
  gap: 28px;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}

.feature-card,
.member-card {
  background: #ffffff;
  border: 1px solid rgba(0, 0, 0, 0.04);
  border-radius: var(--radius-lg);
  padding: 36px;
  box-shadow:
    var(--shadow-sm),
    inset 0 1px 0 rgba(255, 255, 255, 0.6);
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.feature-card:hover,
.member-card:hover {
  box-shadow:
    var(--shadow),
    var(--shadow-accent);
  transform: translateY(-4px);
}

.feature-card h3,
.member-card h3 {
  margin: 0 0 14px;
  font-size: 1.25rem;
}

.feature-card p,
.member-card p {
  margin: 0;
  color: var(--muted);
  line-height: 1.75;
}

.member-card-link {
  text-decoration: none;
  color: inherit;
  display: block;
  transition: all 0.3s ease;
}

.member-card-link:hover .member-card {
  background: #ffffff;
  border-color: rgba(255, 184, 77, 0.5);
  transform: translateY(-6px);
  box-shadow:
    0 20px 50px rgba(0, 0, 0, 0.1),
    0 0 40px rgba(255, 184, 77, 0.12);
}

.member-card-link:hover .member-avatar {
  filter: brightness(1.05) saturate(1.1);
}


.member-avatar {
  width: 100%;
  min-height: 240px;
  border-radius: var(--radius-md);
  margin-bottom: 20px;
  background-size: cover;
  background-position: center;
  box-shadow: var(--shadow-sm);
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.avatar-1 {
  background-color: var(--color-primary);
}

.avatar-2 {
  background-image: url("img/かかちゃん寝てる.webp");
}

.avatar-3 {
  background-image: url("img/ソクラテスオ驚き.png");
}

.timeline {
  display: grid;
  gap: 24px;
}

.timeline-item {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 28px;
  align-items: center;
  padding: 32px;
  border-radius: var(--radius-md);
  background: #ffffff;
  border: 1px solid rgba(0, 0, 0, 0.04);
  box-shadow:
    var(--shadow-sm),
    inset 0 1px 0 rgba(255, 255, 255, 0.6);
  transition: all 0.3s ease;
  text-decoration: none;
  color: inherit;
}

.timeline-item:hover {
  transform: translateX(4px);
  box-shadow:
    var(--shadow),
    inset 0 1px 0 rgba(255, 255, 255, 0.6);
}

.timeline-date {
  color: var(--accent);
  font-weight: 700;
  font-size: 1.1rem;
}

.timeline-item h3 {
  margin: 0 0 10px;
}

.contact-section {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 40px;
  align-items: stretch;
}

.contact-card {
  display: grid;
  gap: 20px;
  padding: 36px;
  border-radius: var(--radius-xl);
  background: linear-gradient(135deg, #ffffff 0%, #faf9f8 100%);
  border: 1px solid rgba(255, 184, 77, 0.12);
  box-shadow:
    var(--shadow),
    0 0 60px rgba(255, 184, 77, 0.08);
}

.contact-card div {
  display: grid;
  gap: 6px;
}

.contact-label {
  margin: 0;
  font-size: 0.85rem;
  color: var(--accent);
  letter-spacing: 0.12em;
}

.contact-link {
  text-decoration: none;
  color: inherit;
}

.contact-link:hover {
  color: var(--accent);
}

.milestone-notification {
  position: fixed;
  top: 20px;
  left: 50%;
  transform: translateX(-50%) translateY(-100px);
  z-index: 1000;
  transition: transform 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.milestone-notification-show {
  transform: translateX(-50%) translateY(0);
}

.milestone-notification-content {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px 24px;
  background: linear-gradient(135deg, rgba(255, 184, 77, 0.95), rgba(255, 139, 97, 0.95));
  border-radius: 999px;
  box-shadow: 0 20px 60px rgba(255, 184, 77, 0.4);
  backdrop-filter: blur(10px);
}

.milestone-notification-icon {
  font-size: 1.5rem;
}

.milestone-notification-text {
  font-weight: 700;
  color: #08101f;
  font-size: 0.95rem;
}

/* Special milestone notification with enhanced styling */
.milestone-notification-special .milestone-notification-content {
  background: linear-gradient(135deg, rgba(255, 100, 150, 0.95), rgba(255, 50, 100, 0.95));
  box-shadow: 0 20px 80px rgba(255, 100, 150, 0.6);
  animation: pulse-glow 1s ease-in-out infinite alternate;
}

.milestone-notification-special .milestone-notification-icon {
  font-size: 2rem;
  animation: bounce 0.5s ease-in-out;
}

@keyframes pulse-glow {
  0% {
    box-shadow: 0 20px 60px rgba(255, 100, 150, 0.4);
  }
  100% {
    box-shadow: 0 20px 80px rgba(255, 100, 150, 0.8);
  }
}

@keyframes bounce {
  0%, 100% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.3);
  }
}

.site-footer {
  padding: 48px clamp(24px, 4vw, 60px);
  text-align: center;
  color: var(--muted);
  background:
    radial-gradient(ellipse at 50% 0%, rgba(255, 184, 77, 0.03) 0%, transparent 50%),
    linear-gradient(180deg, #faf9f8 0%, #f5f4f3 100%);
  border-top: 1px solid rgba(255, 184, 77, 0.08);
}

.footer-links {
  display: flex;
  justify-content: center;
  gap: 20px;
  margin-top: 12px;
  font-size: 0.85rem;
}

.footer-links a {
  color: var(--muted);
  text-decoration: none;
  transition: color 0.2s ease;
}

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

@media (max-width: 900px) {
  .hero,
  .contact-section {
    grid-template-columns: 1fr;
  }
  
  .milestone-counter {
    flex-direction: column;
    align-items: center;
    gap: 20px;
    padding: 16px;
  }
  
  .milestone-display {
    padding-right: 0;
    border-right: none;
    border-bottom: 1px solid rgba(255, 184, 77, 0.3);
    padding-bottom: 16px;
  }
  
  .milestone-count {
    font-size: 2.5rem;
  }
}

@media (max-width: 680px) {
  .site-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 24px;
  }

  .site-nav {
    width: 100%;
    justify-content: space-between;
  }
  
  .milestone-count {
    font-size: 2rem;
  }
  
  .milestone-target {
    font-size: 1.2rem;
  }
}