:root {
  --forest-green: #1a5e3a;
  --warm-yellow: #f9d75c;
  --purple-deep: #3b1e56;
  --purple-light: #8e5ab5;
  --bg-light: #f4f7f6;
  --text-dark: #222;
  --text-light: #fff;
  --card-bg: #fff;
  --transition: all 0.3s ease;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  color: var(--text-dark);
  background-color: var(--bg-light);
  line-height: 1.6;
  overflow-x: hidden;
}
a { text-decoration: none; color: inherit; }
img { max-width: 100%; display: block; }
.container { width: 100%; max-width: 1200px; margin: 0 auto; padding: 0 20px; }

/* Header & Nav */
header {
  background: linear-gradient(135deg, var(--forest-green), var(--warm-yellow));
  color: var(--text-light);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 70px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.4rem;
  font-weight: bold;
  color: var(--text-light);
}
.brand img { height: 34px; border-radius: 8px; }
nav ul {
  display: flex;
  list-style: none;
  gap: 20px;
}
nav a {
  color: var(--text-light);
  font-size: 0.95rem;
  font-weight: 500;
  transition: var(--transition);
  opacity: 0.9;
}
nav a:hover { opacity: 1; color: var(--text-light); text-shadow: 0 0 8px rgba(255,255,255,0.5); }
.menu-toggle { display: none; background: none; border: none; color: #fff; font-size: 1.8rem; cursor: pointer; }

/* Hero Section */
.hero {
  background: linear-gradient(135deg, #1a5e3a 0%, #2d8a57 50%, #f9d75c 100%);
  padding: 60px 20px;
  color: var(--text-light);
  text-align: center;
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  top: -50%; left: -50%; width: 200%; height: 200%;
  background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 60%);
  animation: rotateBg 20s linear infinite;
}
@keyframes rotateBg { 100% { transform: rotate(360deg); } }
.hero-content { position: relative; z-index: 1; max-width: 800px; margin: 0 auto; }
.hero h1 {
  font-size: 2.8rem;
  margin-bottom: 20px;
  text-shadow: 2px 2px 4px rgba(0,0,0,0.2);
  line-height: 1.2;
}
.hero p {
  font-size: 1.15rem;
  margin-bottom: 30px;
  opacity: 0.95;
}
.download-buttons {
  display: flex;
  gap: 15px;
  justify-content: center;
  flex-wrap: wrap;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 30px;
  border-radius: 30px;
  font-size: 1.05rem;
  font-weight: bold;
  cursor: pointer;
  transition: var(--transition);
  border: none;
  min-width: 160px;
}
.btn-primary {
  background: var(--warm-yellow);
  color: var(--forest-green);
  box-shadow: 0 4px 15px rgba(249, 215, 92, 0.4);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 6px 20px rgba(249, 215, 92, 0.6); }
.btn-secondary {
  background: rgba(255,255,255,0.2);
  color: var(--text-light);
  border: 2px solid rgba(255,255,255,0.6);
}
.btn-secondary:hover { background: rgba(255,255,255,0.3); transform: translateY(-2px); }

/* Section Common */
section { padding: 70px 0; }
.section-title {
  text-align: center;
  font-size: 2rem;
  margin-bottom: 15px;
  color: var(--forest-green);
  font-weight: 800;
}
.section-subtitle {
  text-align: center;
  color: #666;
  margin-bottom: 45px;
  font-size: 1.05rem;
}

/* High Energy (Parallax Wall) */
.high-energy { background: #fff; }
.parallax-wall {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  perspective: 1000px;
}
.p-card {
  background: var(--card-bg);
  border-radius: 16px;
  overflow: hidden;
  box-shadow: 0 8px 24px rgba(0,0,0,0.08);
  transition: transform 0.4s ease, box-shadow 0.4s ease;
  transform-style: preserve-3d;
}
.p-card:hover {
  transform: translateY(-10px) rotateX(5deg) rotateY(-3deg) scale(1.02);
  box-shadow: 0 20px 40px rgba(26, 94, 58, 0.2);
}
.p-card img {
  width: 100%;
  height: 280px;
  object-fit: cover;
  transition: transform 0.5s ease;
}
.p-card:hover img { transform: scale(1.05); }
.p-card-info {
  padding: 15px;
  text-align: center;
}
.p-card-info h3 { font-size: 1.1rem; margin-bottom: 5px; color: var(--text-dark); }
.p-card-info span { font-size: 0.85rem; color: var(--forest-green); background: #eaf5ee; padding: 2px 8px; border-radius: 10px; }

/* Exclusive Original (Film Strip) */
.exclusive { background: #fdfaf3; }
.film-strip {
  display: flex;
  flex-direction: column;
  gap: 40px;
}
.film-item {
  display: flex;
  align-items: center;
  gap: 40px;
  background: #fff;
  border-radius: 20px;
  overflow: hidden;
  box-shadow: 0 4px 16px rgba(0,0,0,0.05);
  padding: 20px;
}
.film-item:nth-child(even) { flex-direction: row-reverse; }
.film-img {
  flex: 0 0 300px;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 8px 24px rgba(0,0,0,0.15);
}
.film-img img { width: 100%; height: 400px; object-fit: cover; display: block; }
.film-text { flex: 1; }
.film-text h3 { font-size: 1.6rem; color: var(--forest-green); margin-bottom: 10px; }
.film-text .tags { margin-bottom: 15px; }
.film-text .tags span {
  display: inline-block;
  background: #f9d75c;
  color: var(--forest-green);
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 0.85rem;
  margin-right: 8px;
  margin-bottom: 5px;
  font-weight: bold;
}
.film-text p { color: #555; font-size: 1rem; line-height: 1.8; margin-bottom: 15px; }
.film-meta { font-size: 0.9rem; color: #888; }

/* Timeline (Energy Timeline) */
.timeline-section { background: #111827; color: var(--text-light); }
.timeline-section .section-title { color: #4ade80; }
.timeline-section .section-subtitle { color: #9ca3af; }
.timeline {
  position: relative;
  max-width: 900px;
  margin: 0 auto;
  padding-left: 40px;
  border-left: 3px solid #4ade80;
}
.tl-item {
  position: relative;
  margin-bottom: 40px;
  padding: 20px;
  background: rgba(255,255,255,0.05);
  border-radius: 12px;
  backdrop-filter: blur(10px);
  border: 1px solid rgba(74, 222, 128, 0.2);
  transition: var(--transition);
}
.tl-item:hover { border-color: #4ade80; background: rgba(255,255,255,0.1); }
.tl-item::before {
  content: '';
  position: absolute;
  left: -48px;
  top: 24px;
  width: 15px;
  height: 15px;
  background: #4ade80;
  border-radius: 50%;
  box-shadow: 0 0 10px #4ade80, 0 0 20px #4ade80;
  animation: pulseGlow 2s infinite;
}
@keyframes pulseGlow {
  0%, 100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.3); opacity: 0.7; }
}
.tl-time { font-size: 1.2rem; font-weight: bold; color: #4ade80; margin-bottom: 5px; }
.tl-title { font-size: 1.1rem; font-weight: bold; color: #fff; margin-bottom: 5px; }
.tl-desc { font-size: 0.9rem; color: #9ca3af; }

/* Bubble Matrix */
.bubble-section { background: var(--purple-deep); color: var(--text-light); }
.bubble-section .section-title { color: var(--warm-yellow); }
.bubble-section .section-subtitle { color: #d1d5db; }
.bubble-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.bubble-card {
  background: rgba(255,255,255,0.08);
  border-radius: 20px;
  padding: 25px 20px;
  text-align: center;
  border: 1px solid rgba(255,255,255,0.15);
  backdrop-filter: blur(10px);
  transition: var(--transition);
  position: relative;
}
.bubble-card:hover { transform: translateY(-8px); background: rgba(255,255,255,0.15); }
.bubble-card.top-three {
  border: 2px solid var(--warm-yellow);
  box-shadow: 0 0 20px rgba(249, 215, 92, 0.3);
}
.bubble-card.top-three::after {
  content: 'TOP';
  position: absolute;
  top: -10px; right: 15px;
  background: var(--warm-yellow);
  color: var(--purple-deep);
  font-size: 0.7rem;
  padding: 2px 8px;
  border-radius: 10px;
  font-weight: bold;
}
.bubble-icon { font-size: 2rem; margin-bottom: 10px; }
.bubble-card h3 { font-size: 1.2rem; margin-bottom: 8px; }
.bubble-card p { font-size: 0.9rem; color: #cbd5e1; }

/* Danmaku (Echo) */
.danmaku-section { background: #f0f7f4; }
.danmaku-container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}
.danmaku-item {
  display: flex;
  gap: 15px;
  background: #fff;
  padding: 15px 20px;
  border-radius: 50px;
  box-shadow: 0 4px 10px rgba(0,0,0,0.05);
  align-items: center;
  transition: var(--transition);
}
.danmaku-item:hover { transform: scale(1.02); box-shadow: 0 6px 15px rgba(26, 94, 58, 0.15); }
.danmaku-avatar {
  width: 45px; height: 45px;
  border-radius: 50%;
  overflow: hidden;
  flex-shrink: 0;
  border: 2px solid var(--forest-green);
}
.danmaku-avatar img { width: 100%; height: 100%; object-fit: cover; }
.danmaku-text { font-size: 0.95rem; color: #333; }
.danmaku-user { font-size: 0.8rem; color: var(--forest-green); font-weight: bold; margin-bottom: 2px; }

/* Mindmap (FAQ) */
.faq-section { background: #fff; }
.faq-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 30px;
  max-width: 1000px;
  margin: 0 auto;
}
.faq-item {
  background: var(--bg-light);
  border-radius: 16px;
  padding: 25px;
  border-left: 5px solid var(--forest-green);
  transition: var(--transition);
}
.faq-item:hover { transform: translateX(5px); box-shadow: 0 8px 24px rgba(0,0,0,0.08); }
.faq-item h3 { font-size: 1.15rem; margin-bottom: 10px; color: var(--forest-green); }
.faq-item p { font-size: 0.95rem; color: #555; }

/* Download Section */
.download-section {
  background: linear-gradient(135deg, var(--forest-green) 0%, #2d8a57 100%);
  color: var(--text-light);
  text-align: center;
  padding: 80px 20px;
}
.download-section h2 { font-size: 2rem; margin-bottom: 20px; color: var(--warm-yellow); }
.download-section p { font-size: 1.1rem; margin-bottom: 40px; max-width: 600px; margin-left: auto; margin-right: auto; opacity: 0.9; }
.steps-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-bottom: 50px;
  max-width: 900px;
  margin-left: auto;
  margin-right: auto;
}
.step-card {
  background: rgba(255,255,255,0.1);
  border-radius: 16px;
  padding: 25px 15px;
  border: 1px solid rgba(255,255,255,0.2);
}
.step-num { font-size: 1.8rem; font-weight: bold; color: var(--warm-yellow); margin-bottom: 10px; }
.step-card h3 { font-size: 1.05rem; margin-bottom: 5px; }
.step-card p { font-size: 0.85rem; opacity: 0.8; }

/* Footer */
footer {
  background: #1a2e22;
  color: #a0b8ad;
  padding: 40px 20px 20px;
  font-size: 0.9rem;
}
.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 20px;
  max-width: 1200px;
  margin: 0 auto;
}
.footer-brand p { margin-top: 10px; max-width: 400px; line-height: 1.6; }
.footer-links h4 { color: #fff; margin-bottom: 10px; }
.footer-links ul { list-style: none; }
.footer-links li { margin-bottom: 5px; }
.footer-bottom {
  text-align: center;
  border-top: 1px solid #2e4a3a;
  margin-top: 30px;
  padding-top: 20px;
  font-size: 0.8rem;
  color: #6b8a7a;
}
.update-time { font-size: 0.75rem; color: #6b8a7a; margin-top: 5px; }

/* Baidu Modal */
.modal-overlay {
  display: none;
  position: fixed;
  top: 0; left: 0; width: 100%; height: 100%;
  background: rgba(0,0,0,0.6);
  z-index: 1000;
  justify-content: center;
  align-items: center;
  padding: 20px;
}
.modal-overlay.active { display: flex; }
.modal-box {
  background: #fff;
  border-radius: 20px;
  padding: 30px 20px;
  max-width: 400px;
  width: 100%;
  text-align: center;
  color: var(--text-dark);
}
.modal-box p { font-size: 1rem; margin-bottom: 15px; font-weight: bold; }
.modal-input {
  width: 100%;
  padding: 10px;
  border: 1px solid #ccc;
  border-radius: 8px;
  font-size: 0.9rem;
  text-align: center;
  margin-bottom: 20px;
  background: #f4f7f6;
  color: #333;
}
.modal-btn {
  background: var(--forest-green);
  color: #fff;
  border: none;
  padding: 10px 30px;
  border-radius: 20px;
  font-size: 1rem;
  cursor: pointer;
  transition: var(--transition);
}
.modal-btn:hover { background: #144d2e; }

/* Responsive */
@media (max-width: 1024px) {
  .parallax-wall { grid-template-columns: repeat(2, 1fr); }
  .bubble-grid { grid-template-columns: repeat(2, 1fr); }
  .danmaku-container { grid-template-columns: 1fr; }
  .film-item { flex-direction: column !important; text-align: center; }
  .film-img { flex: none; width: 100%; max-width: 400px; margin: 0 auto; }
  .film-text .tags { justify-content: center; display: flex; flex-wrap: wrap; }
}
@media (max-width: 768px) {
  nav ul { display: none; position: absolute; top: 70px; left: 0; width: 100%; background: var(--forest-green); flex-direction: column; padding: 20px; }
  nav ul.show { display: flex; }
  .menu-toggle { display: block; }
  .hero h1 { font-size: 2rem; }
  .parallax-wall { grid-template-columns: 1fr; }
  .bubble-grid { grid-template-columns: 1fr; }
  .faq-grid { grid-template-columns: 1fr; }
  .steps-grid { grid-template-columns: 1fr; }
  .footer-content { flex-direction: column; }
  .section-title { font-size: 1.6rem; }
  .p-card img { height: 220px; }
  .film-img img { height: 300px; }
}