/* ============================================
   蘑菇视频 - 官方网站样式
   Domain: mogushipin2.net
   ============================================ */

/* ---------- CSS Variables ---------- */
:root {
  --primary: #7c3aed;
  --primary-light: #a78bfa;
  --accent: #ec4899;
  --accent-light: #f472b6;
  --bg-dark: #0a0a0f;
  --bg-card: #13131a;
  --bg-card-hover: #1a1a24;
  --bg-section: #0e0e16;
  --text-primary: #f1f1f6;
  --text-secondary: #a0a0b8;
  --text-muted: #6b6b80;
  --border: rgba(124, 58, 237, 0.15);
  --gradient-main: linear-gradient(135deg, #7c3aed 0%, #ec4899 100%);
  --gradient-subtle: linear-gradient(135deg, rgba(124,58,237,0.1) 0%, rgba(236,72,153,0.1) 100%);
  --shadow-lg: 0 25px 50px -12px rgba(0,0,0,0.5);
  --radius: 16px;
  --radius-sm: 8px;
  --radius-full: 9999px;
  --max-width: 1200px;
  --header-h: 72px;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ---------- Reset & Base ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
  background: var(--bg-dark);
  color: var(--text-primary);
  line-height: 1.7;
  overflow-x: hidden;
}

a { color: var(--primary-light); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--accent-light); }

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

.container { max-width: var(--max-width); margin: 0 auto; padding: 0 24px; }

/* ---------- Typography ---------- */
h1, h2, h3, h4 { font-weight: 700; line-height: 1.25; color: var(--text-primary); }
h1 { font-size: clamp(2.2rem, 5vw, 3.5rem); }
h2 { font-size: clamp(1.8rem, 4vw, 2.5rem); margin-bottom: 1rem; }
h3 { font-size: 1.35rem; margin-bottom: 0.5rem; }
p { color: var(--text-secondary); }

.section-header { text-align: center; margin-bottom: 60px; }
.section-header p { max-width: 600px; margin: 12px auto 0; font-size: 1.1rem; }

.gradient-text {
  background: var(--gradient-main);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  border-radius: var(--radius-full);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: all var(--transition);
  text-decoration: none;
}

.btn-primary {
  background: var(--gradient-main);
  color: #fff;
  box-shadow: 0 4px 20px rgba(124,58,237,0.4);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(124,58,237,0.5);
  color: #fff;
}

.btn-outline {
  background: transparent;
  color: var(--text-primary);
  border: 2px solid var(--border);
}
.btn-outline:hover {
  border-color: var(--primary);
  background: rgba(124,58,237,0.08);
  color: var(--text-primary);
}

.btn-sm { padding: 10px 24px; font-size: 0.9rem; }

/* ---------- Header ---------- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-h);
  z-index: 1000;
  transition: background var(--transition), box-shadow var(--transition);
}
.site-header.scrolled {
  background: rgba(10,10,15,0.92);
  backdrop-filter: blur(20px);
  box-shadow: 0 1px 0 var(--border);
}

.header-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--text-primary);
}
.logo:hover { color: var(--text-primary); }
.logo-icon {
  width: 40px;
  height: 40px;
  background: var(--gradient-main);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
}

.nav-links { display: flex; align-items: center; gap: 32px; list-style: none; }
.nav-links a {
  color: var(--text-secondary);
  font-size: 0.95rem;
  font-weight: 500;
  position: relative;
}
.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--gradient-main);
  transition: width var(--transition);
}
.nav-links a:hover, .nav-links a.active { color: var(--text-primary); }
.nav-links a:hover::after, .nav-links a.active::after { width: 100%; }

.mobile-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.mobile-toggle span {
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: var(--transition);
}

/* ---------- Hero ---------- */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  padding-top: var(--header-h);
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}
.hero-bg::before {
  content: '';
  position: absolute;
  top: -30%;
  left: 50%;
  transform: translateX(-50%);
  width: 800px;
  height: 800px;
  background: radial-gradient(circle, rgba(124,58,237,0.15) 0%, transparent 70%);
  border-radius: 50%;
}
.hero-bg::after {
  content: '';
  position: absolute;
  bottom: -20%;
  right: -10%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(236,72,153,0.1) 0%, transparent 70%);
  border-radius: 50%;
}

.hero-content {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 800px;
  margin: 0 auto;
  padding: 60px 24px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 20px;
  background: var(--gradient-subtle);
  border: 1px solid var(--border);
  border-radius: var(--radius-full);
  font-size: 0.85rem;
  color: var(--primary-light);
  margin-bottom: 28px;
}

.hero h1 { margin-bottom: 24px; }
.hero-desc { font-size: 1.2rem; margin-bottom: 40px; max-width: 600px; margin-left: auto; margin-right: auto; }

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

.hero-stats {
  display: flex;
  gap: 48px;
  justify-content: center;
  margin-top: 60px;
  padding-top: 40px;
  border-top: 1px solid var(--border);
}
.hero-stat h3 { font-size: 2rem; margin-bottom: 4px; }
.hero-stat p { font-size: 0.9rem; }

/* ---------- Sections ---------- */
section { padding: 100px 0; }
section:nth-child(even) { background: var(--bg-section); }

/* ---------- Feature Cards ---------- */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 36px 28px;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}
.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient-main);
  opacity: 0;
  transition: opacity var(--transition);
}
.feature-card:hover {
  transform: translateY(-4px);
  border-color: rgba(124,58,237,0.3);
  background: var(--bg-card-hover);
  box-shadow: var(--shadow-lg);
}
.feature-card:hover::before { opacity: 1; }

.feature-icon {
  width: 56px;
  height: 56px;
  background: var(--gradient-subtle);
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 20px;
}

.feature-card h3 { margin-bottom: 10px; }
.feature-card p { font-size: 0.95rem; }

/* ---------- Download Section ---------- */
.download-platforms {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
  margin-top: 48px;
}

.platform-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 40px 32px;
  text-align: center;
  transition: all var(--transition);
}
.platform-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(124,58,237,0.3);
}

.platform-icon { font-size: 3rem; margin-bottom: 16px; }
.platform-card h3 { margin-bottom: 8px; }
.platform-card p { font-size: 0.9rem; margin-bottom: 20px; }

/* ---------- Screenshots ---------- */
.screenshots-wrapper {
  display: flex;
  gap: 24px;
  overflow-x: auto;
  padding: 20px 0;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
}
.screenshots-wrapper::-webkit-scrollbar { height: 6px; }
.screenshots-wrapper::-webkit-scrollbar-track { background: var(--bg-card); border-radius: 3px; }
.screenshots-wrapper::-webkit-scrollbar-thumb { background: var(--primary); border-radius: 3px; }

.screenshot-item {
  flex: 0 0 280px;
  scroll-snap-align: center;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  aspect-ratio: 9/16;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  font-size: 0.9rem;
}

/* ---------- Testimonials ---------- */
.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px;
}

.testimonial-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
}
.testimonial-card p { font-style: italic; margin-bottom: 16px; font-size: 0.95rem; }
.testimonial-author { display: flex; align-items: center; gap: 12px; }
.testimonial-avatar {
  width: 44px;
  height: 44px;
  background: var(--gradient-main);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-weight: 700;
  font-size: 1rem;
}
.testimonial-name { font-weight: 600; color: var(--text-primary); font-size: 0.9rem; }
.testimonial-role { font-size: 0.8rem; color: var(--text-muted); }

/* ---------- FAQ ---------- */
.faq-list { max-width: 760px; margin: 0 auto; }
.faq-item {
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  margin-bottom: 12px;
  overflow: hidden;
  background: var(--bg-card);
}
.faq-question {
  width: 100%;
  padding: 20px 24px;
  background: none;
  border: none;
  color: var(--text-primary);
  font-size: 1rem;
  font-weight: 600;
  text-align: left;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.faq-question::after {
  content: '+';
  font-size: 1.4rem;
  color: var(--primary-light);
  transition: transform var(--transition);
}
.faq-item.active .faq-question::after {
  transform: rotate(45deg);
}
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease;
}
.faq-answer-inner { padding: 0 24px 20px; color: var(--text-secondary); font-size: 0.95rem; }

/* ---------- CTA Section ---------- */
.cta-section {
  text-align: center;
  position: relative;
}
.cta-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--gradient-subtle);
  border-radius: 0;
}
.cta-section .container { position: relative; z-index: 1; }
.cta-section h2 { margin-bottom: 16px; }
.cta-section p { margin-bottom: 32px; font-size: 1.1rem; }

/* ---------- Footer ---------- */
.site-footer {
  background: var(--bg-card);
  border-top: 1px solid var(--border);
  padding: 60px 0 30px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}

.footer-brand p { margin-top: 12px; font-size: 0.9rem; max-width: 280px; }

.footer-col h4 { font-size: 0.95rem; margin-bottom: 16px; color: var(--text-primary); }
.footer-col ul { list-style: none; }
.footer-col li { margin-bottom: 10px; }
.footer-col a { color: var(--text-muted); font-size: 0.9rem; }
.footer-col a:hover { color: var(--primary-light); }

.footer-bottom {
  border-top: 1px solid var(--border);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
}
.footer-bottom p { font-size: 0.85rem; color: var(--text-muted); }
.footer-social { display: flex; gap: 16px; }
.footer-social a {
  width: 36px;
  height: 36px;
  border: 1px solid var(--border);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  font-size: 0.9rem;
  transition: all var(--transition);
}
.footer-social a:hover {
  border-color: var(--primary);
  color: var(--primary-light);
  background: rgba(124,58,237,0.08);
}

/* ---------- Page Hero (Inner Pages) ---------- */
.page-hero {
  padding: 160px 0 80px;
  text-align: center;
  position: relative;
}
.page-hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(124,58,237,0.12) 0%, transparent 70%);
  border-radius: 50%;
}
.page-hero h1 { margin-bottom: 16px; position: relative; }
.page-hero p { font-size: 1.15rem; max-width: 600px; margin: 0 auto; position: relative; }

/* ---------- About Page ---------- */
.about-content { max-width: 800px; margin: 0 auto; }
.about-content h2 { margin-top: 48px; margin-bottom: 16px; }
.about-content p { margin-bottom: 16px; font-size: 1.05rem; }

.values-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 24px;
  margin-top: 40px;
}
.value-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 24px;
  text-align: center;
}
.value-card .feature-icon { margin: 0 auto 16px; }

/* ---------- Legal Pages ---------- */
.legal-content {
  max-width: 800px;
  margin: 0 auto;
  padding: 0 24px 80px;
}
.legal-content h2 { margin-top: 40px; margin-bottom: 12px; font-size: 1.4rem; }
.legal-content h3 { margin-top: 28px; margin-bottom: 8px; font-size: 1.15rem; }
.legal-content p { margin-bottom: 14px; font-size: 0.98rem; }
.legal-content ul { margin: 12px 0 12px 24px; color: var(--text-secondary); }
.legal-content li { margin-bottom: 8px; font-size: 0.98rem; }
.legal-update { color: var(--text-muted); font-size: 0.9rem; margin-bottom: 32px; }

/* ---------- Animations ---------- */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ---------- Responsive ---------- */
@media (max-width: 968px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .hero-stats { gap: 32px; }
}

@media (max-width: 768px) {
  .nav-links { display: none; }
  .nav-links.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: var(--header-h);
    left: 0;
    right: 0;
    background: rgba(10,10,15,0.98);
    backdrop-filter: blur(20px);
    padding: 24px;
    gap: 20px;
    border-bottom: 1px solid var(--border);
  }
  .mobile-toggle { display: flex; }
  .hero-stats { flex-direction: column; gap: 20px; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .footer-bottom { flex-direction: column; text-align: center; }
  section { padding: 70px 0; }
}

@media (max-width: 480px) {
  .hero-buttons { flex-direction: column; align-items: center; }
  .btn { width: 100%; justify-content: center; }
  .features-grid { grid-template-columns: 1fr; }
}