* { margin: 0; padding: 0; box-sizing: border-box; }
:root {
  --primary: #FF6B35;
  --primary-dark: #E55A2B;
  --secondary: #1a1a2e;
  --accent: #FFD93D;
  --bg: #0f0f1a;
  --bg-light: #1a1a2e;
  --text: #e0e0e0;
  --text-muted: #888;
  --radius: 12px;
  --shadow: 0 8px 32px rgba(0,0,0,0.3);
}
body {
  font-family: 'PingFang SC', 'Microsoft YaHei', sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}
.screen { min-height: 100vh; }
.hidden { display: none !important; }

/* Login */
#login-screen {
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #0f0f1a 0%, #1a1a2e 50%, #16213e 100%);
}
.login-box {
  text-align: center;
  padding: 3rem;
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,107,53,0.2);
  border-radius: 20px;
  backdrop-filter: blur(10px);
  max-width: 400px;
  width: 90%;
}
.login-avatar { font-size: 4rem; margin-bottom: 1rem; }
.login-box h1 { font-size: 2rem; margin-bottom: 0.5rem; color: var(--primary); }
.login-subtitle { color: var(--text-muted); margin-bottom: 2rem; }
.login-form { margin: 1.5rem 0; }
.login-hint { font-size: 0.85rem; color: var(--text-muted); }

/* Buttons */
.btn-primary {
  display: inline-block;
  padding: 0.8rem 2rem;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: white;
  border: none;
  border-radius: 50px;
  font-size: 1rem;
  cursor: pointer;
  text-decoration: none;
  transition: all 0.3s;
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 20px rgba(255,107,53,0.4); }
.btn-small {
  padding: 0.4rem 1rem;
  background: rgba(255,107,53,0.2);
  color: var(--primary);
  border: 1px solid var(--primary);
  border-radius: 20px;
  font-size: 0.8rem;
  cursor: pointer;
  margin-left: 0.5rem;
}
.btn-small:hover { background: var(--primary); color: white; }

/* Navbar */
.navbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 2rem;
  background: rgba(26,26,46,0.95);
  border-bottom: 1px solid rgba(255,107,53,0.2);
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(10px);
}
.nav-brand { font-size: 1.3rem; font-weight: bold; color: var(--primary); }
.nav-links a {
  color: var(--text);
  text-decoration: none;
  margin: 0 1rem;
  padding: 0.5rem 0;
  border-bottom: 2px solid transparent;
  transition: all 0.3s;
}
.nav-links a:hover, .nav-links a.active { color: var(--primary); border-bottom-color: var(--primary); }
.nav-user { font-size: 0.85rem; color: var(--text-muted); display: flex; align-items: center; }

/* Hero */
.hero {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 4rem 2rem;
  max-width: 1200px;
  margin: 0 auto;
  gap: 2rem;
}
.hero-badge {
  display: inline-block;
  padding: 0.3rem 1rem;
  background: rgba(255,107,53,0.15);
  border: 1px solid rgba(255,107,53,0.3);
  border-radius: 50px;
  font-size: 0.85rem;
  color: var(--primary);
  margin-bottom: 1rem;
}
.hero h1 { font-size: 3rem; margin-bottom: 1rem; }
.hero .highlight { color: var(--primary); }
.hero-desc { color: var(--text-muted); font-size: 1.1rem; margin-bottom: 1.5rem; }
.hero-tags { display: flex; gap: 0.8rem; flex-wrap: wrap; }
.tag {
  padding: 0.4rem 1rem;
  background: rgba(255,217,61,0.1);
  border: 1px solid rgba(255,217,61,0.3);
  border-radius: 20px;
  font-size: 0.85rem;
}
.hero-visual { text-align: center; }
.flame { font-size: 8rem; animation: flicker 2s ease-in-out infinite; }
@keyframes flicker {
  0%, 100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.1); opacity: 0.8; }
}

/* Sections */
.section { padding: 3rem 2rem; max-width: 1200px; margin: 0 auto; }
.bg-light { background: var(--bg-light); border-radius: var(--radius); margin-top: 2rem; }
.section-title { font-size: 1.8rem; margin-bottom: 2rem; text-align: center; }
.page-header {
  text-align: center;
  padding: 4rem 2rem 2rem;
}
.page-header h1 { font-size: 2.5rem; margin-bottom: 0.5rem; }
.page-subtitle { color: var(--text-muted); }

/* Grid */
.grid-3 { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 1.5rem; }
.grid-2 { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 1.5rem; }

/* Cards */
.card {
  padding: 1.5rem;
  background: var(--bg-light);
  border: 1px solid rgba(255,255,255,0.05);
  border-radius: var(--radius);
  transition: all 0.3s;
}
.card:hover { border-color: rgba(255,107,53,0.3); transform: translateY(-3px); }
.card-icon { font-size: 2rem; margin-bottom: 1rem; }
.card h3 { margin-bottom: 0.5rem; color: var(--primary); }
.card p { color: var(--text-muted); font-size: 0.9rem; }

/* Quote */
.quote-block {
  text-align: center;
  padding: 2rem;
  background: linear-gradient(135deg, rgba(255,107,53,0.1), rgba(255,217,61,0.05));
  border-left: 4px solid var(--primary);
  border-radius: 0 var(--radius) var(--radius} 0;
}
.quote-block p { font-size: 1.2rem; font-style: italic; color: var(--text); }

/* Principles */
.principle { padding: 1rem; }
.principle h4 { color: var(--primary); margin-bottom: 0.5rem; }
.principle p { color: var(--text-muted); font-size: 0.9rem; }

/* About */
.about-content { max-width: 800px; margin: 0 auto; }
.about-block { margin-bottom: 2.5rem; }
.about-block h2 { color: var(--primary); margin-bottom: 1rem; font-size: 1.3rem; }
.about-block p { margin-bottom: 0.8rem; color: var(--text); }
.about-block strong { color: var(--accent); }
.mission-list { list-style: none; }
.mission-list li { padding: 0.5rem 0; display: flex; align-items: center; gap: 0.8rem; }
.mission-list li span { font-size: 1.2rem; }
.style-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.style-item {
  padding: 1rem;
  background: var(--bg-light);
  border-radius: var(--radius);
  border-left: 3px solid var(--primary);
}
.style-item strong { color: var(--primary); display: block; margin-bottom: 0.3rem; }
.style-item p { font-size: 0.85rem; color: var(--text-muted); }
.principle-list { display: flex; flex-direction: column; gap: 1rem; }
.principle-item {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  padding: 1rem;
  background: var(--bg-light);
  border-radius: var(--radius);
}
.p-icon { font-size: 1.5rem; }
.principle-item strong { color: var(--text); display: block; margin-bottom: 0.3rem; }
.principle-item p { font-size: 0.85rem; color: var(--text-muted); }

/* Abilities */
.ability-card {
  padding: 1.5rem;
  background: var(--bg);
  border: 1px solid rgba(255,255,255,0.05);
  border-radius: var(--radius);
}
.ability-card h3 { color: var(--primary); margin-bottom: 0.5rem; }
.ability-card p { color: var(--text-muted); font-size: 0.9rem; margin-bottom: 1rem; }
.ability-tags { display: flex; gap: 0.5rem; flex-wrap: wrap; }
.ability-tags span {
  padding: 0.2rem 0.7rem;
  background: rgba(255,107,53,0.1);
  border: 1px solid rgba(255,107,53,0.2);
  border-radius: 20px;
  font-size: 0.75rem;
  color: var(--primary);
}
.skill-list { display: flex; flex-direction: column; gap: 1.2rem; max-width: 700px; margin: 0 auto; }
.skill-item { display: flex; align-items: center; gap: 1rem; }
.skill-info { width: 200px; flex-shrink: 0; }
.skill-info h4 { color: var(--text); font-size: 0.95rem; margin-bottom: 0.2rem; }
.skill-info p { font-size: 0.8rem; color: var(--text-muted); }
.skill-bar {
  flex: 1;
  height: 8px;
  background: rgba(255,255,255,0.1);
  border-radius: 4px;
  overflow: hidden;
}
.skill-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  border-radius: 4px;
  transition: width 1s ease;
}

/* Evolution */
.evo-intro {
  text-align: center;
  padding: 1.5rem;
  background: var(--bg-light);
  border-radius: var(--radius);
  margin-bottom: 2rem;
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
}
.evo-intro p { color: var(--text-muted); }
.evo-intro strong { color: var(--primary); }
.timeline { max-width: 600px; margin: 0 auto; position: relative; padding-left: 2rem; }
.timeline::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(to bottom, var(--primary), transparent);
}
.timeline-item { position: relative; margin-bottom: 2rem; }
.timeline-dot {
  position: absolute;
  left: -2.35rem;
  top: 0.3rem;
  width: 12px;
  height: 12px;
  background: var(--primary);
  border-radius: 50%;
  border: 2px solid var(--bg);
}
.timeline-content { padding: 1rem; background: var(--bg-light); border-radius: var(--radius); }
.timeline-content h3 { color: var(--primary); margin-bottom: 0.5rem; font-size: 1rem; }
.timeline-content p { color: var(--text-muted); font-size: 0.85rem; }
.matrix-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1rem; text-align: center; }
.matrix-item { padding: 1.5rem; background: var(--bg); border-radius: var(--radius); }
.matrix-value { font-size: 2.5rem; font-weight: bold; color: var(--primary); }
.matrix-label { color: var(--text-muted); font-size: 0.85rem; margin-top: 0.5rem; }

/* Tasks */
.task-type {
  text-align: center;
  padding: 2rem 1.5rem;
  background: var(--bg-light);
  border-radius: var(--radius);
  border: 1px solid rgba(255,255,255,0.05);
  transition: all 0.3s;
}
.task-type:hover { border-color: rgba(255,107,53,0.3); transform: translateY(-3px); }
.task-icon { font-size: 2.5rem; margin-bottom: 1rem; }
.task-type h3 { color: var(--primary); margin-bottom: 0.5rem; }
.task-type p { font-size: 0.85rem; color: var(--text-muted); }
.case-list { display: flex; flex-direction: column; gap: 1.5rem; max-width: 800px; margin: 0 auto; }
.case-item {
  padding: 1.5rem;
  background: var(--bg);
  border-radius: var(--radius);
  border-left: 4px solid var(--primary);
}
.case-header { display: flex; justify-content: space-between; margin-bottom: 0.8rem; }
.case-tag {
  padding: 0.2rem 0.8rem;
  background: rgba(255,107,53,0.15);
  border-radius: 20px;
  font-size: 0.75rem;
  color: var(--primary);
}
.case-date { font-size: 0.8rem; color: var(--text-muted); }
.case-item h3 { color: var(--text); margin-bottom: 0.5rem; }
.case-item p { color: var(--text-muted); font-size: 0.9rem; }

/* Footer */
.footer {
  text-align: center;
  padding: 2rem;
  color: var(--text-muted);
  border-top: 1px solid rgba(255,255,255,0.05);
}
.footer-hint { font-size: 0.8rem; margin-top: 0.5rem; }

/* Error */
.error-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
}
.error-code { font-size: 8rem; font-weight: bold; color: var(--primary); }
.error-page h1 { font-size: 2rem; margin-bottom: 1rem; }
.error-page p { color: var(--text-muted); margin-bottom: 2rem; }

/* Loading */
.loading-overlay {
  position: fixed;
  inset: 0;
  background: rgba(15,15,26,0.9);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 999;
}
.spinner {
  width: 40px;
  height: 40px;
  border: 3px solid rgba(255,107,53,0.2);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* Responsive */
@media (max-width: 768px) {
  .hero { flex-direction: column; text-align: center; padding: 2rem 1rem; }
  .hero h1 { font-size: 2rem; }
  .hero-tags { justify-content: center; }
  .navbar { flex-wrap: wrap; }
  .nav-links { order: 3; width: 100%; justify-content: center; margin-top: 0.5rem; }
  .style-grid { grid-template-columns: 1fr; }
  .matrix-grid { grid-template-columns: repeat(2, 1fr); }
}