/* ========== NBTI 开始引导页样式 (Light) ========== */

.start-page {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  min-height: 100dvh;
  padding: 24px 20px 16px;
  text-align: center;
}

/* ---- Hero ---- */
.hero-section {
  margin-bottom: 20px;
  animation: fadeInUp 0.8s ease-out;
}

.hero-title {
  font-size: 3.6rem;
  font-weight: 900;
  line-height: 1.05;
  margin-bottom: 6px;
  letter-spacing: 6px;
}

.nbti-title {
  color: #1a8a10;
  text-shadow:
    0 0 8px rgba(26, 138, 16, 0.4),
    0 0 24px rgba(26, 138, 16, 0.15);
  animation: neonPulse 3s ease-in-out infinite;
}

@keyframes neonPulse {
  0%, 100% {
    text-shadow:
      0 0 8px rgba(26, 138, 16, 0.4),
      0 0 24px rgba(26, 138, 16, 0.15);
  }
  50% {
    text-shadow:
      0 0 12px rgba(26, 138, 16, 0.6),
      0 0 36px rgba(26, 138, 16, 0.25);
  }
}

.hero-fullname {
  font-size: 1rem;
  font-weight: 900;
  letter-spacing: 3px;
  margin-bottom: 8px;
}

.hero-fullname .neon-green {
  color: #1a8a10;
  -webkit-text-fill-color: initial;
}

.hero-fullname .cyber-pink {
  color: #c41a6e;
  text-shadow: 0 0 6px rgba(196, 26, 110, 0.2);
  -webkit-text-fill-color: initial;
}

.hero-subtitle {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.5;
  max-width: 320px;
  margin: 0 auto;
}

/* ---- 五维预览 - 紧凑横排 ---- */
.model-preview {
  display: flex;
  justify-content: center;
  gap: 6px;
  margin-bottom: 16px;
  flex-wrap: wrap;
  animation: fadeInUp 0.6s ease-out 0.2s both;
}

.model-chip {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 5px 10px;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 500;
  background: var(--bg-card);
  border: 1px solid var(--border);
  transition: var(--transition);
  box-shadow: var(--shadow-sm);
}

.model-chip:hover {
  border-color: #1a8a10;
  transform: translateY(-2px);
  box-shadow: 0 3px 12px rgba(26, 138, 16, 0.12);
}

/* ---- 信息区 - 横排三列 ---- */
.info-row {
  display: flex;
  justify-content: center;
  gap: 24px;
  margin-bottom: 20px;
  animation: fadeInUp 0.6s ease-out 0.3s both;
}

.info-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
}

.info-num {
  font-size: 1.3rem;
  font-weight: 900;
  color: #1a8a10;
}

.info-label {
  font-size: 0.72rem;
  color: var(--text-muted);
}

/* ---- CTA按钮区 ---- */
.cta-section {
  animation: fadeInUp 0.6s ease-out 0.4s both;
}

.cta-section .btn-primary {
  font-size: 1.1rem;
  padding: 16px 48px;
  border-radius: 50px;
  letter-spacing: 2px;
  background: linear-gradient(135deg, #1a8a10, #0d6b08);
  color: #fff;
  box-shadow:
    0 4px 20px rgba(26, 138, 16, 0.3),
    0 0 24px rgba(26, 138, 16, 0.1);
  font-weight: 900;
}

.cta-section .btn-primary:hover {
  transform: translateY(-3px) scale(1.04);
  box-shadow:
    0 8px 36px rgba(26, 138, 16, 0.45),
    0 0 40px rgba(26, 138, 16, 0.15);
  filter: brightness(1.15);
}

.cta-section .btn-primary:active {
  transform: translateY(1px) scale(0.98);
  filter: brightness(0.95);
  box-shadow: 0 2px 10px rgba(26, 138, 16, 0.3);
}

.cta-hint {
  margin-top: 10px;
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* ---- 底部 ---- */
.start-footer {
  margin-top: 24px;
  font-size: 0.7rem;
  color: var(--text-muted);
  animation: fadeIn 0.8s ease-out 0.6s both;
}

/* ---- 粒子背景 ---- */
.particles {
  position: fixed;
  top: 0; left: 0;
  width: 100%; height: 100%;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}

.particle {
  position: absolute;
  width: 4px;
  height: 4px;
  background: #1a8a10;
  border-radius: 50%;
  opacity: 0.12;
  animation: drift linear infinite;
}

@keyframes drift {
  from { transform: translateY(100vh) rotate(0deg); opacity: 0.12; }
  50% { opacity: 0.2; }
  to { transform: translateY(-20px) rotate(360deg); opacity: 0; }
}

/* ---- NB 解读区（保留但默认隐藏，未来可扩展） ---- */
.nb-decode {
  width: 100%;
  max-width: 560px;
  background: var(--bg-card);
  border: 2px solid #1a8a10;
  border-radius: var(--radius);
  padding: 20px;
  margin-bottom: 20px;
  box-shadow: 0 0 24px rgba(26, 138, 16, 0.08);
  display: none;
}

.nb-decode.show { display: block; }

.nb-decode-title {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 3px;
  margin-bottom: 12px;
  text-align: center;
}

.nb-decode-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.nb-decode-item {
  display: flex;
  align-items: center;
  gap: 12px;
}

.nb-letter {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 8px;
  background: var(--bg-secondary);
  border: 2px solid currentColor;
  font-size: 1.2rem;
  font-weight: 900;
  flex-shrink: 0;
}

.nb-meaning {
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--text-primary);
}