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

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
  background: #f8fafc;
  color: #0f172a;
  line-height: 1.7;
  font-size: 16px;
  overflow-x: hidden;
  transition: background-color 0.4s ease, color 0.4s ease;
}

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

a { color: #2563eb; text-decoration: none; font-weight: 500; transition: color 0.2s ease; }
a:hover { color: #1d4ed8; text-decoration: underline; }
a:visited { color: #4338ca; }

h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.3;
  color: #0f172a;
  margin-bottom: 0.5rem;
}

h1 { font-size: clamp(1.8rem, 4vw, 2.5rem); }
h2 { font-size: clamp(1.5rem, 3vw, 2rem); margin-top: 2.5rem; margin-bottom: 1.2rem; position: relative; padding-bottom: 0.5rem; }
h2::after { content: ''; position: absolute; bottom: 0; left: 0; width: 60px; height: 4px; background: linear-gradient(90deg, #2563eb, #7c3aed); border-radius: 4px; }
h3 { font-size: 1.25rem; }
h4 { font-size: 1.1rem; }

p { margin-bottom: 1rem; }

.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 20px;
  width: 100%;
}

/* ===== Theme Variables ===== */
:root {
  --bg-primary: #f8fafc;
  --bg-secondary: #ffffff;
  --bg-nav: rgba(255, 255, 255, 0.8);
  --bg-card: #ffffff;
  --bg-banner: linear-gradient(135deg, #0f172a 0%, #1e293b 50%, #334155 100%);
  --text-primary: #0f172a;
  --text-secondary: #334155;
  --text-muted: #64748b;
  --text-banner: #f8fafc;
  --border-color: #e2e8f0;
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.12);
  --accent: #2563eb;
  --accent-hover: #1d4ed8;
  --accent-gradient: linear-gradient(135deg, #2563eb, #7c3aed);
  --footer-bg: #0f172a;
  --footer-text: #cbd5e1;
  --footer-heading: #ffffff;
  --success: #10b981;
  --warning: #f59e0b;
  --error: #ef4444;
  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-full: 9999px;
}

[data-theme="dark"] {
  --bg-primary: #0b1120;
  --bg-secondary: #111827;
  --bg-nav: rgba(15, 23, 42, 0.85);
  --bg-card: #1e293b;
  --bg-banner: linear-gradient(135deg, #020617 0%, #0f172a 50%, #1e293b 100%);
  --text-primary: #f1f5f9;
  --text-secondary: #cbd5e1;
  --text-muted: #94a3b8;
  --text-banner: #f8fafc;
  --border-color: #334155;
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
  --accent: #60a5fa;
  --accent-hover: #3b82f6;
  --accent-gradient: linear-gradient(135deg, #60a5fa, #a78bfa);
  --footer-bg: #020617;
  --footer-text: #94a3b8;
  --footer-heading: #e2e8f0;
}

/* ===== Navbar ===== */
.navbar {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: var(--bg-nav);
  backdrop-filter: blur(16px) saturate(180%);
  -webkit-backdrop-filter: blur(16px) saturate(180%);
  border-bottom: 1px solid var(--border-color);
  padding: 0.75rem 0;
  transition: background-color 0.3s ease, box-shadow 0.3s ease;
}

.navbar.scrolled { box-shadow: var(--shadow-md); }

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.logo {
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--text-primary);
  letter-spacing: -0.5px;
  line-height: 1;
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

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

.logo::before {
  content: '🎬';
  font-size: 1.5rem;
  margin-right: 0.25rem;
}

.nav-links {
  display: flex;
  gap: 0.5rem;
  align-items: center;
  flex-wrap: wrap;
}

.nav-links a {
  color: var(--text-secondary);
  font-weight: 500;
  padding: 0.5rem 1rem;
  border-radius: var(--radius-full);
  border: 1px solid transparent;
  transition: all 0.25s ease;
  font-size: 0.95rem;
}

.nav-links a:hover {
  color: var(--accent);
  background: rgba(37, 99, 235, 0.08);
  border-color: rgba(37, 99, 235, 0.2);
  text-decoration: none;
}

.search-box {
  display: flex;
  align-items: center;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-full);
  padding: 0.25rem 0.5rem;
  box-shadow: var(--shadow-sm);
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.search-box:focus-within {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

.search-box input {
  border: none;
  background: transparent;
  padding: 0.5rem 0.8rem;
  color: var(--text-primary);
  outline: none;
  width: 160px;
  font-size: 0.95rem;
  transition: width 0.3s ease;
}

.search-box input::placeholder { color: var(--text-muted); }

.search-box input:focus { width: 200px; }

.search-box button {
  background: var(--accent-gradient);
  color: #fff;
  border: none;
  border-radius: var(--radius-full);
  padding: 0.45rem 1rem;
  cursor: pointer;
  font-weight: 600;
  font-size: 0.9rem;
  transition: opacity 0.2s ease, transform 0.2s ease;
  white-space: nowrap;
}

.search-box button:hover { opacity: 0.9; transform: scale(1.02); }

.theme-toggle, .menu-toggle {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-full);
  padding: 0.45rem 0.9rem;
  cursor: pointer;
  color: var(--text-primary);
  font-size: 1.1rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s ease;
  box-shadow: var(--shadow-sm);
}

.theme-toggle:hover, .menu-toggle:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.menu-toggle { display: none; }

/* ===== Banner ===== */
.banner {
  background: var(--bg-banner);
  color: var(--text-banner);
  padding: 4rem 0;
  position: relative;
  overflow: hidden;
  margin-bottom: 2rem;
}

.banner::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(37, 99, 235, 0.3) 0%, transparent 70%);
  pointer-events: none;
  animation: float 8s ease-in-out infinite;
}

.banner::after {
  content: '';
  position: absolute;
  bottom: -50%;
  left: -20%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(124, 58, 237, 0.2) 0%, transparent 70%);
  pointer-events: none;
  animation: float 10s ease-in-out infinite reverse;
}

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

.banner-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 3rem;
  flex-wrap: wrap;
  position: relative;
  z-index: 1;
}

.banner-text { flex: 1 1 400px; }

.banner-text h1 {
  color: #ffffff;
  font-size: clamp(2rem, 5vw, 3.5rem);
  margin-bottom: 1rem;
  line-height: 1.2;
  text-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
}

.banner-text p {
  color: #e2e8f0;
  font-size: clamp(1rem, 2vw, 1.25rem);
  margin-bottom: 2rem;
  opacity: 0.9;
}

.banner-cta { display: flex; gap: 1rem; flex-wrap: wrap; }

.btn {
  background: var(--accent-gradient);
  color: #fff;
  padding: 0.8rem 2rem;
  border-radius: var(--radius-full);
  font-weight: 600;
  border: none;
  cursor: pointer;
  font-size: 1rem;
  transition: all 0.3s ease;
  box-shadow: 0 4px 16px rgba(37, 99, 235, 0.3);
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(37, 99, 235, 0.4);
}

.btn-outline {
  background: transparent;
  border: 2px solid rgba(255, 255, 255, 0.6);
  color: #ffffff;
  box-shadow: none;
}

.btn-outline:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: #ffffff;
  box-shadow: none;
}

.banner-art {
  flex: 0 1 300px;
  display: flex;
  justify-content: center;
  animation: float 6s ease-in-out infinite;
}

.banner-art svg {
  filter: drop-shadow(0 10px 30px rgba(0, 0, 0, 0.3));
  border-radius: 20px;
}

/* ===== Section Styling ===== */
section { padding: 1.5rem 0; }

main.container { padding: 2rem 20px; }

/* ===== Grid Layouts ===== */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.5rem;
  margin: 2rem 0;
}

.grid > div { min-width: 0; }

/* ===== Card Styling ===== */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 2rem;
  box-shadow: var(--shadow-sm);
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--accent-gradient);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s ease;
}

.card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(37, 99, 235, 0.3);
}

.card:hover::before { transform: scaleX(1); }

.card h3 { margin-bottom: 0.75rem; font-size: 1.3rem; }

.card h4 { color: var(--text-secondary); font-weight: 600; }

.card p { color: var(--text-secondary); margin-bottom: 0.5rem; }

.card svg { margin-bottom: 1rem; transition: transform 0.3s ease; }

.card:hover svg { transform: scale(1.1) rotate(-5deg); }

/* ===== Article List ===== */
.article-list { list-style: none; }

.article-list li {
  padding: 1rem 0;
  border-bottom: 1px solid var(--border-color);
  transition: all 0.3s ease;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

.article-list li:hover { padding-left: 0.5rem; }

.article-list li:last-child { border-bottom: none; }

.article-list a {
  font-size: 1.1rem;
  font-weight: 500;
  color: var(--text-primary);
  transition: color 0.2s ease;
  flex: 1;
}

.article-list a:hover { color: var(--accent); text-decoration: none; }

.meta { font-size: 0.85rem; color: var(--text-muted); white-space: nowrap; }

/* ===== FAQ Styling ===== */
details {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.2rem 1.5rem;
  margin-bottom: 0.75rem;
  box-shadow: var(--shadow-sm);
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

details:hover { border-color: rgba(37, 99, 235, 0.4); box-shadow: var(--shadow-md); }

details[open] { border-color: var(--accent); }

summary {
  cursor: pointer;
  font-weight: 600;
  color: var(--text-primary);
  font-size: 1.05rem;
  list-style: none;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  transition: color 0.3s ease;
}

summary::-webkit-details-marker { display: none; }

summary::before {
  content: '+';
  font-size: 1.5rem;
  font-weight: 400;
  color: var(--accent);
  transition: transform 0.3s ease;
  display: inline-block;
  width: 24px;
  height: 24px;
  line-height: 1;
  text-align: center;
  border-radius: 50%;
  background: rgba(37, 99, 235, 0.1);
  flex-shrink: 0;
}

details[open] summary::before { transform: rotate(45deg); }

details p {
  margin-top: 1rem;
  padding-left: 2.5rem;
  color: var(--text-secondary);
}

/* ===== Table Styling ===== */
table { width: 100%; border-collapse: collapse; margin: 1.5rem 0; border-radius: var(--radius-sm); overflow: hidden; box-shadow: var(--shadow-sm); }

th, td { padding: 0.85rem 1.2rem; border: 1px solid var(--border-color); text-align: left; }

th { background: var(--bg-card); color: var(--text-primary); font-weight: 600; }

tr:nth-child(even) { background: rgba(0, 0, 0, 0.02); }

[data-theme="dark"] tr:nth-child(even) { background: rgba(255, 255, 255, 0.03); }

/* ===== Footer ===== */
.footer {
  background: var(--footer-bg);
  color: var(--footer-text);
  padding: 4rem 0 2rem;
  margin-top: 4rem;
  position: relative;
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 2.5rem;
  margin-bottom: 2rem;
}

.footer h4 {
  color: var(--footer-heading);
  margin-bottom: 1.2rem;
  font-size: 1.1rem;
  position: relative;
  padding-bottom: 0.5rem;
}

.footer h4::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 30px;
  height: 3px;
  background: var(--accent);
  border-radius: 3px;
}

.footer a {
  color: var(--footer-text);
  display: inline-block;
  padding: 0.3rem 0;
  transition: all 0.3s ease;
  font-size: 0.95rem;
}

.footer a:hover {
  color: var(--accent);
  transform: translateX(5px);
  text-decoration: none;
}

.copyright {
  text-align: center;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 2rem;
  margin-top: 2rem;
  font-size: 0.9rem;
  color: var(--footer-text);
  opacity: 0.8;
}

.copyright p { margin-bottom: 0.5rem; }

/* ===== Reveal Animation ===== */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s cubic-bezier(0.4, 0, 0.2, 1), transform 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

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

/* ===== Back to Top ===== */
#backTop {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  background: var(--accent-gradient);
  color: #fff;
  width: 50px;
  height: 50px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 1.5rem;
  box-shadow: 0 4px 20px rgba(37, 99, 235, 0.4);
  z-index: 999;
  border: none;
  transition: all 0.3s ease;
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
}

#backTop.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

#backTop:hover {
  transform: translateY(-4px) scale(1.1);
  box-shadow: 0 8px 30px rgba(37, 99, 235, 0.5);
}

/* ===== Contact Section ===== */
#contact {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  padding: 3rem;
  box-shadow: var(--shadow-md);
  margin: 3rem auto;
}

#contact p { color: var(--text-secondary); }

#contact a { color: var(--accent); }

/* ===== Links Section ===== */
#links p { display: flex; flex-wrap: wrap; gap: 0.75rem; }

#links a {
  padding: 0.5rem 1.2rem;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-full);
  font-size: 0.9rem;
  transition: all 0.3s ease;
  color: var(--text-secondary);
}

#links a:hover {
  background: var(--accent-gradient);
  color: #fff;
  border-color: transparent;
  text-decoration: none;
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

/* ===== List Styling ===== */
ol, ul { padding-left: 1.5rem; margin-bottom: 1rem; }

li { margin-bottom: 0.5rem; }

ol li::marker { color: var(--accent); font-weight: 600; }

/* ===== HowTo Section ===== */
#howto ol {
  background: var(--bg-card);
  border-radius: var(--radius-md);
  padding: 2rem 2rem 2rem 3rem;
  box-shadow: var(--shadow-sm);
  margin: 1.5rem 0;
}

#howto ol li {
  padding: 0.5rem 0;
  color: var(--text-secondary);
  font-size: 1.05rem;
}

#howto ol li::marker { color: var(--accent); font-weight: 700; font-size: 1.2rem; }

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .grid { grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); }
  .banner-content { gap: 2rem; }
}

@media (max-width: 900px) {
  .nav-links {
    display: none;
    width: 100%;
    flex-direction: column;
    align-items: flex-start;
    gap: 0.25rem;
    padding: 1rem 0;
    background: var(--bg-card);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
    margin-top: 0.5rem;
  }
  
  .nav-links.open { display: flex; }
  
  .nav-links a { width: 100%; border-radius: var(--radius-sm); }
  
  .menu-toggle { display: inline-flex; }
  
  .search-box { order: 3; width: 100%; margin-top: 0.5rem; }
  
  .search-box input { width: 100%; }
  
  .search-box input:focus { width: 100%; }
  
  .banner { padding: 3rem 0; }
  
  .banner-art { display: none; }
  
  .banner-text { flex: 1 1 100%; text-align: center; }
  
  .banner-cta { justify-content: center; }
}

@media (max-width: 640px) {
  body { font-size: 15px; }
  
  .container { padding: 0 16px; }
  
  h1 { font-size: 1.8rem; }
  
  h2 { font-size: 1.4rem; }
  
  .grid { grid-template-columns: 1fr; gap: 1rem; }
  
  .card { padding: 1.5rem; }
  
  .banner-text h1 { font-size: 1.8rem; }
  
  .banner-cta { flex-direction: column; align-items: center; }
  
  .btn { width: 100%; justify-content: center; }
  
  .article-list li { flex-direction: column; align-items: flex-start; gap: 0.25rem; }
  
  .meta { align-self: flex-end; }
  
  details { padding: 1rem; }
  
  details p { padding-left: 1.5rem; }
  
  #contact { padding: 2rem 1.5rem; }
  
  #backTop { bottom: 1.5rem; right: 1.5rem; width: 44px; height: 44px; font-size: 1.2rem; }
  
  .footer { padding: 3rem 0 1.5rem; }
  
  .footer-grid { gap: 1.5rem; }
  
  table { font-size: 0.9rem; }
  
  th, td { padding: 0.6rem 0.8rem; }
}

@media (max-width: 380px) {
  .logo { font-size: 1.4rem; }
  
  .search-box input { width: 100px; }
  
  .search-box input:focus { width: 120px; }
  
  .theme-toggle, .menu-toggle { padding: 0.35rem 0.7rem; }
}

/* ===== Scrollbar Styling ===== */
::-webkit-scrollbar { width: 10px; height: 10px; }

::-webkit-scrollbar-track { background: var(--bg-primary); }

::-webkit-scrollbar-thumb {
  background: linear-gradient(180deg, #2563eb, #7c3aed);
  border-radius: 10px;
  border: 2px solid var(--bg-primary);
}

::-webkit-scrollbar-thumb:hover { background: linear-gradient(180deg, #1d4ed8, #6d28d9); }

::selection {
  background: rgba(37, 99, 235, 0.2);
  color: var(--text-primary);
}

/* ===== Focus Styles ===== */
:focus-visible {
  outline: 3px solid rgba(37, 99, 235, 0.4);
  outline-offset: 2px;
  border-radius: 4px;
}

/* ===== Print Styles ===== */
@media print {
  .navbar, .banner, #backTop, .footer, .search-box, .theme-toggle, .menu-toggle { display: none !important; }
  
  body { background: #fff; color: #000; }
  
  a { color: #000; text-decoration: underline; }
  
  .reveal { opacity: 1 !important; transform: none !important; }
  
  main.container { padding: 0; }
  
  section { padding: 1rem 0; }
}
```