:root {
  --bg: #f8fafc;
  --surface: #ffffff;
  --surface-2: #f1f5f9;
  --text: #0f172a;
  --text-muted: #64748b;
  --text-light: #94a3b8;
  --primary: #22c55e;
  --primary-dark: #16a34a;
  --primary-light: #dcfce7;
  --secondary: #3b82f6;
  --secondary-light: #dbeafe;
  --accent: #8b5cf6;
  --accent-light: #ede9fe;
  --warning: #f59e0b;
  --border: #e2e8f0;
  --shadow: 0 1px 3px rgba(15, 23, 42, 0.08), 0 1px 2px rgba(15, 23, 42, 0.04);
  --shadow-lg: 0 10px 30px -10px rgba(15, 23, 42, 0.12);
  --radius: 1rem;
  --radius-lg: 1.5rem;
  --radius-xl: 2rem;
  --max-width: 1200px;
  --font-display: 'Outfit', 'Noto Sans SC', sans-serif;
  --font-body: 'Noto Sans SC', 'Outfit', sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

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

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* Navigation */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(248, 250, 252, 0.72);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(226, 232, 240, 0.6);
  transition: background 0.3s ease, box-shadow 0.3s ease;
}

.nav.scrolled {
  background: rgba(248, 250, 252, 0.92);
  box-shadow: var(--shadow);
}

.nav-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
  height: 4rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.25rem;
  color: var(--text);
  flex-shrink: 0;
}

.logo-mark {
  width: 2rem;
  height: 2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--primary);
  color: white;
  border-radius: 0.5rem;
  font-size: 1rem;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  list-style: none;
  margin-left: auto;
}

.nav-links a {
  display: block;
  padding: 0.5rem 0.75rem;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-muted);
  border-radius: 0.5rem;
  transition: color 0.2s, background 0.2s;
}

.nav-links a:hover {
  color: var(--text);
  background: var(--surface-2);
}

.nav-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.5rem 1.25rem;
  background: var(--primary);
  color: white;
  font-size: 0.875rem;
  font-weight: 600;
  border-radius: 2rem;
  transition: transform 0.2s, background 0.2s, box-shadow 0.2s;
  flex-shrink: 0;
}

.nav-cta:hover {
  background: var(--primary-dark);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(34, 197, 94, 0.25);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 2.5rem;
  height: 2.5rem;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
  border-radius: 0.5rem;
  transition: background 0.2s;
}

.nav-toggle:hover {
  background: var(--surface-2);
}

.nav-toggle span {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: transform 0.3s, opacity 0.3s;
}

.nav-toggle[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}

.nav-toggle[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Hero */
.hero {
  position: relative;
  min-height: 100dvh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  padding: 6rem 1.5rem 4rem;
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: -1;
  background: linear-gradient(135deg, #f0fdf4 0%, #f8fafc 50%, #eff6ff 100%);
}

.hero-grid {
  position: absolute;
  inset: 0;
  background-image: 
    linear-gradient(rgba(34, 197, 94, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(34, 197, 94, 0.04) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse at center, black 0%, transparent 70%);
  -webkit-mask-image: radial-gradient(ellipse at center, black 0%, transparent 70%);
}

.hero-blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.5;
  animation: float 8s ease-in-out infinite;
}

.blob-1 {
  width: 400px;
  height: 400px;
  background: var(--primary);
  top: -100px;
  right: -100px;
  animation-delay: 0s;
}

.blob-2 {
  width: 300px;
  height: 300px;
  background: var(--secondary);
  bottom: 10%;
  left: -50px;
  animation-delay: -3s;
  opacity: 0.35;
}

.blob-3 {
  width: 250px;
  height: 250px;
  background: var(--accent);
  bottom: -50px;
  right: 20%;
  animation-delay: -5s;
  opacity: 0.3;
}

@keyframes float {
  0%, 100% { transform: translateY(0) scale(1); }
  50% { transform: translateY(-20px) scale(1.05); }
}

.hero-content {
  max-width: 800px;
  text-align: center;
  z-index: 1;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  background: white;
  border: 1px solid var(--border);
  border-radius: 2rem;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-muted);
  margin-bottom: 1.5rem;
  box-shadow: var(--shadow);
}

.badge-dot {
  width: 8px;
  height: 8px;
  background: var(--primary);
  border-radius: 50%;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.7; transform: scale(1.1); }
}

.hero-title {
  margin-bottom: 1rem;
  font-family: var(--font-display);
  line-height: 1.05;
}

.title-main {
  display: block;
  font-size: clamp(2.5rem, 7vw, 5.5rem);
  font-weight: 900;
  color: var(--text);
  letter-spacing: -0.03em;
}

.title-sub {
  display: block;
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 800;
  color: var(--primary);
  letter-spacing: -0.02em;
  margin-top: 0.25rem;
}

.hero-subtitle {
  font-size: clamp(1rem, 2vw, 1.25rem);
  color: var(--text-muted);
  margin-bottom: 2.5rem;
  font-weight: 400;
}

/* Countdown */
.countdown {
  background: rgba(255, 255, 255, 0.72);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(226, 232, 240, 0.8);
  border-radius: var(--radius-lg);
  padding: 1.5rem 2rem;
  margin-bottom: 2.5rem;
  box-shadow: var(--shadow-lg);
}

.countdown-label {
  font-size: 0.875rem;
  color: var(--text-muted);
  margin-bottom: 1rem;
  font-weight: 500;
}

.countdown-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
}

.countdown-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.25rem;
}

.countdown-number {
  font-family: var(--font-display);
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 800;
  color: var(--text);
  line-height: 1;
  min-width: 2ch;
}

.countdown-unit {
  font-size: 0.75rem;
  color: var(--text-muted);
  font-weight: 500;
}

.countdown.live .countdown-label {
  color: var(--primary);
  font-weight: 700;
}

.countdown.live .countdown-number {
  color: var(--primary);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.875rem 1.75rem;
  font-size: 1rem;
  font-weight: 600;
  border-radius: 2rem;
  transition: transform 0.2s, box-shadow 0.2s, background 0.2s;
  border: none;
  cursor: pointer;
}

.btn:hover {
  transform: translateY(-2px);
}

.btn-primary {
  background: var(--primary);
  color: white;
  box-shadow: 0 4px 14px rgba(34, 197, 94, 0.3);
}

.btn-primary:hover {
  background: var(--primary-dark);
  box-shadow: 0 6px 20px rgba(34, 197, 94, 0.35);
}

.btn-secondary {
  background: white;
  color: var(--text);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}

.btn-secondary:hover {
  background: var(--surface-2);
  box-shadow: var(--shadow-lg);
}

.hero-scroll {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  color: var(--text-muted);
  font-size: 0.75rem;
  font-weight: 500;
  animation: bounce 2s infinite;
}

.scroll-arrow {
  width: 20px;
  height: 20px;
  border-right: 2px solid var(--text-muted);
  border-bottom: 2px solid var(--text-muted);
  transform: rotate(45deg);
}

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

/* Section common */
section {
  padding: 6rem 0;
}

.section-header {
  max-width: 640px;
  margin: 0 auto 3.5rem;
  text-align: center;
}

.section-tag {
  display: inline-block;
  padding: 0.375rem 0.875rem;
  background: var(--primary-light);
  color: var(--primary-dark);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  border-radius: 2rem;
  margin-bottom: 1rem;
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 1rem;
  color: var(--text);
}

.section-desc {
  font-size: 1.125rem;
  color: var(--text-muted);
  line-height: 1.7;
}

/* Info */
.info {
  background: var(--surface);
}

.info-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}

.info-card {
  display: flex;
  flex-direction: column;
  padding: 2rem;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  transition: transform 0.2s, box-shadow 0.2s, border-color 0.2s;
}

.info-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--primary);
}

.info-icon {
  width: 3.5rem;
  height: 3.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 1rem;
  margin-bottom: 1.25rem;
}

.icon-group {
  background: var(--secondary-light);
  color: var(--secondary);
}

.icon-rules {
  background: var(--accent-light);
  color: var(--accent);
}

.info-card h3 {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  color: var(--text);
}

.info-card p {
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.7;
  margin-bottom: 1.25rem;
  flex-grow: 1;
}

.info-link {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--primary);
  transition: gap 0.2s;
}

.info-card:hover .info-link {
  color: var(--primary-dark);
}

/* Staff */
.staff-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.staff-card {
  text-align: center;
  padding: 2.5rem 2rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  transition: transform 0.2s, box-shadow 0.2s;
}

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

.staff-avatar {
  width: 120px;
  height: 120px;
  margin: 0 auto 1.5rem;
  border-radius: 50%;
  overflow: hidden;
  border: 4px solid var(--primary-light);
  box-shadow: 0 4px 16px rgba(34, 197, 94, 0.15);
}

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

.staff-name {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 0.25rem;
}

.staff-role {
  font-size: 0.875rem;
  color: var(--text-muted);
  font-weight: 500;
}

/* Schedule */
.schedule {
  background: var(--surface-2);
}

.schedule-wrapper {
  max-width: 900px;
  margin: 0 auto;
}

.schedule-note {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  margin-bottom: 2rem;
  color: var(--text-muted);
  font-size: 0.875rem;
}

.note-badge {
  display: inline-flex;
  padding: 0.25rem 0.75rem;
  border-radius: 2rem;
  font-size: 0.75rem;
  font-weight: 600;
}

.note-green { background: var(--primary-light); color: var(--primary-dark); }
.note-blue { background: var(--secondary-light); color: var(--secondary); }
.note-purple { background: var(--accent-light); color: var(--accent); }

.schedule-grid {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.schedule-row {
  display: grid;
  grid-template-columns: 180px 1fr;
  gap: 1.5rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: transform 0.2s, box-shadow 0.2s;
}

.schedule-row:hover {
  transform: translateX(4px);
  box-shadow: var(--shadow-lg);
}

.schedule-date {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  background: linear-gradient(135deg, var(--primary-light) 0%, #f0fdf4 100%);
  border-right: 1px solid var(--border);
  text-align: center;
}

.date-range {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--text);
  line-height: 1.2;
}

.date-days {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: 0.25rem;
  font-weight: 500;
}

.schedule-content {
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.schedule-tag {
  display: inline-flex;
  align-self: flex-start;
  padding: 0.25rem 0.75rem;
  border-radius: 2rem;
  font-size: 0.75rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.tag-green { background: var(--primary-light); color: var(--primary-dark); }
.tag-blue { background: var(--secondary-light); color: var(--secondary); }
.tag-purple { background: var(--accent-light); color: var(--accent); }

.schedule-content h3 {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 0.25rem;
}

.schedule-content p {
  font-size: 0.95rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* Highlights */
.highlights {
  background: var(--surface);
}

.highlights-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
}

.highlight-card {
  text-align: center;
  padding: 2.5rem 1.5rem;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  transition: transform 0.2s, box-shadow 0.2s;
}

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

.highlight-number {
  display: block;
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 5vw, 3.5rem);
  font-weight: 900;
  color: var(--primary);
  line-height: 1;
  margin-bottom: 0.75rem;
}

.highlight-label {
  font-size: 0.875rem;
  color: var(--text-muted);
  font-weight: 600;
}

/* About */
.about {
  background: linear-gradient(180deg, var(--surface) 0%, var(--bg) 100%);
}

.about-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 4rem;
  align-items: start;
}

.about-content .section-header {
  text-align: left;
  margin-left: 0;
  margin-bottom: 1.5rem;
}

.about-content p {
  color: var(--text-muted);
  line-height: 1.8;
  margin-bottom: 1.25rem;
  font-size: 1rem;
}

.about-values {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-top: 2rem;
}

.value-item {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.625rem 1rem;
  background: var(--primary-light);
  color: var(--primary-dark);
  border-radius: 2rem;
  font-size: 0.875rem;
  font-weight: 600;
}

.value-icon {
  display: flex;
  align-items: center;
  justify-content: center;
}

.about-visual {
  position: sticky;
  top: 6rem;
}

.about-card {
  padding: 2.5rem;
  background: var(--primary);
  color: white;
  border-radius: var(--radius-xl);
  box-shadow: 0 20px 40px -20px rgba(34, 197, 94, 0.4);
}

.about-card-label {
  display: inline-block;
  padding: 0.375rem 0.875rem;
  background: rgba(255, 255, 255, 0.2);
  border-radius: 2rem;
  font-size: 0.75rem;
  font-weight: 700;
  margin-bottom: 1rem;
  backdrop-filter: blur(4px);
}

.about-card h3 {
  font-family: var(--font-display);
  font-size: 1.75rem;
  font-weight: 800;
  margin-bottom: 0.75rem;
}

.about-card p {
  color: rgba(255, 255, 255, 0.9);
  line-height: 1.7;
  font-size: 1rem;
}

/* Footer */
.footer {
  background: var(--text);
  color: white;
  padding: 4rem 0 2rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 3rem;
  margin-bottom: 3rem;
}

.footer-brand .logo {
  color: white;
  margin-bottom: 1rem;
}

.footer-brand p {
  color: rgba(255, 255, 255, 0.65);
  font-size: 0.95rem;
  line-height: 1.7;
  max-width: 280px;
}

.footer-links h4 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 1rem;
  color: white;
}

.footer-links ul {
  list-style: none;
}

.footer-links li {
  margin-bottom: 0.5rem;
}

.footer-links a {
  color: rgba(255, 255, 255, 0.65);
  font-size: 0.9rem;
  transition: color 0.2s;
}

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

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 1rem;
  padding-top: 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  color: rgba(255, 255, 255, 0.5);
  font-size: 0.875rem;
}

/* Reveal animation */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s cubic-bezier(0.16, 1, 0.3, 1), transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Responsive */
@media (max-width: 1024px) {
  .about-grid {
    gap: 2rem;
  }
}

@media (max-width: 768px) {
  .nav-links {
    position: fixed;
    top: 4rem;
    left: 0;
    right: 0;
    background: rgba(248, 250, 252, 0.96);
    backdrop-filter: blur(16px);
    flex-direction: column;
    align-items: stretch;
    padding: 1rem 1.5rem;
    gap: 0.5rem;
    border-bottom: 1px solid var(--border);
    transform: translateY(-100%);
    opacity: 0;
    pointer-events: none;
    transition: transform 0.3s ease, opacity 0.3s ease;
  }
  
  .nav-links.open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }
  
  .nav-links a {
    padding: 0.75rem;
    border-radius: 0.5rem;
  }
  
  .nav-toggle {
    display: flex;
  }
  
  .nav-cta {
    display: none;
  }
  
  .hero {
    padding-top: 5rem;
  }
  
  .countdown-grid {
    gap: 0.5rem;
  }
  
  .countdown-item {
    gap: 0;
  }
  
  .info-grid,
  .staff-grid,
  .highlights-grid {
    grid-template-columns: 1fr;
  }
  
  .schedule-row {
    grid-template-columns: 1fr;
  }
  
  .schedule-date {
    border-right: none;
    border-bottom: 1px solid var(--border);
    flex-direction: row;
    gap: 0.75rem;
    justify-content: flex-start;
    padding: 1rem 1.5rem;
  }
  
  .about-grid {
    grid-template-columns: 1fr;
  }
  
  .about-visual {
    position: static;
  }
  
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
  
  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
}

@media (max-width: 480px) {
  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }
  
  .btn {
    width: 100%;
  }
  
  section {
    padding: 4rem 0;
  }
  
  .info-card,
  .staff-card,
  .highlight-card,
  .schedule-row,
  .about-card {
    border-radius: var(--radius);
  }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
  
  .hero-blob {
    animation: none;
  }
  
  .hero-scroll {
    animation: none;
  }
}