```css
/* ===== 魅影TV 全站样式 ===== */
:root {
  --bg: #f8f4f0;
  --bg-soft: #efe6dc;
  --card-bg: rgba(255, 255, 255, 0.7);
  --text-primary: #3a2e2a;
  --text-secondary: #5c4a42;
  --text-accent: #8b3a2a;
  --heading: #2a1f1a;
  --border-light: #d9c8ba;
  --brand: #b85c38;
  --brand-dark: #944a2e;
  --btn-text: #fff8f2;
  --nav-bg: rgba(255, 250, 245, 0.85);
  --footer-bg: #2e201a;
  --footer-text: #e8ddd5;
  --footer-heading: #fff8f2;
  --code-bg: #f0e8e0;
  --shadow: 0 8px 24px rgba(60, 40, 25, 0.1);
  --radius: 20px;
  --gradient-hero: linear-gradient(135deg, #f8e8d8 0%, #e8c8b0 50%, #d8a888 100%);
}

[data-theme="dark"] {
  --bg: #1e1a18;
  --bg-soft: #2a241f;
  --card-bg: rgba(40, 34, 30, 0.8);
  --text-primary: #f0e6de;
  --text-secondary: #d4c4b8;
  --text-accent: #f0b090;
  --heading: #faf3ed;
  --border-light: #4a3e36;
  --brand: #e08a5a;
  --brand-dark: #f0a878;
  --btn-text: #2a1f1a;
  --nav-bg: rgba(30, 26, 23, 0.9);
  --footer-bg: #14100e;
  --footer-text: #c8b8ac;
  --footer-heading: #fff8f2;
  --code-bg: #2a241f;
  --shadow: 0 8px 24px rgba(0, 0, 0, 0.5);
  --gradient-hero: linear-gradient(135deg, #2a241f 0%, #3a2e26 50%, #4a3a30 100%);
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
  background-color: var(--bg);
  background-image: radial-gradient(circle at 20% 20%, rgba(184, 92, 56, 0.05) 0%, transparent 40%);
  color: var(--text-primary);
  line-height: 1.75;
  transition: background-color 0.4s ease, color 0.4s ease;
  overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
  color: var(--heading);
  font-weight: 700;
  line-height: 1.3;
  transition: color 0.3s;
}

h1 {
  font-size: clamp(2rem, 5vw, 3rem);
  letter-spacing: -0.02em;
  margin-bottom: 0.75rem;
  background: linear-gradient(135deg, var(--brand), var(--brand-dark));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

h2 {
  font-size: clamp(1.6rem, 4vw, 2.2rem);
  margin: 2.5rem 0 1.25rem;
  position: relative;
  padding-left: 1.2rem;
}

h2::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.3em;
  width: 6px;
  height: 0.8em;
  background: var(--brand);
  border-radius: 3px;
}

h3 {
  font-size: clamp(1.2rem, 3vw, 1.5rem);
  margin: 1.5rem 0 0.75rem;
}

h4 {
  font-size: 1.15rem;
  margin: 1rem 0 0.5rem;
  color: var(--text-accent);
}

p {
  color: var(--text-primary);
  margin-bottom: 1rem;
  font-size: 1.05rem;
}

a {
  color: var(--brand-dark);
  text-decoration: none;
  font-weight: 500;
  transition: color 0.2s, transform 0.2s;
}

a:hover {
  color: var(--brand);
  text-decoration: underline;
}

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

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

/* ===== 导航栏 ===== */
.sticky-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--nav-bg);
  backdrop-filter: blur(18px) saturate(180%);
  -webkit-backdrop-filter: blur(18px) saturate(180%);
  border-bottom: 1px solid var(--border-light);
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.05);
}

.nav-wrapper {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.6rem 0;
  gap: 1rem;
}

.logo {
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--heading);
  letter-spacing: -0.03em;
  background: linear-gradient(135deg, var(--brand), var(--brand-dark));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.logo span {
  font-weight: 300;
}

.menu {
  display: flex;
  gap: 1.5rem;
  align-items: center;
}

.menu a {
  color: var(--text-primary);
  font-weight: 500;
  padding: 0.4rem 0.2rem;
  position: relative;
  transition: color 0.2s;
}

.menu a::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--brand);
  transition: width 0.3s ease;
}

.menu a:hover {
  color: var(--brand);
  text-decoration: none;
}

.menu a:hover::after {
  width: 100%;
}

.search-box {
  display: flex;
  align-items: center;
  background: var(--bg-soft);
  padding: 0.2rem 0.4rem 0.2rem 1rem;
  border-radius: 40px;
  border: 1px solid transparent;
  transition: border-color 0.3s, box-shadow 0.3s;
}

.search-box:focus-within {
  border-color: var(--brand);
  box-shadow: 0 0 0 3px rgba(184, 92, 56, 0.15);
}

.search-box input {
  border: none;
  background: transparent;
  padding: 0.5rem 0.2rem;
  width: 160px;
  color: var(--text-primary);
  outline: none;
  font-size: 0.95rem;
}

.search-box input::placeholder {
  color: var(--text-secondary);
  opacity: 0.7;
}

.search-box button {
  background: var(--brand);
  border: none;
  color: var(--btn-text);
  padding: 0.4rem 1rem;
  border-radius: 30px;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.2s, transform 0.2s;
}

.search-box button:hover {
  background: var(--brand-dark);
  transform: scale(1.03);
}

.theme-toggle, .mobile-menu-icon {
  background: none;
  border: none;
  font-size: 1.3rem;
  cursor: pointer;
  color: var(--heading);
  padding: 0.3rem 0.6rem;
  border-radius: 50%;
  transition: background 0.2s, transform 0.2s;
}

.theme-toggle:hover, .mobile-menu-icon:hover {
  background: var(--bg-soft);
  transform: rotate(15deg);
}

.mobile-menu-icon {
  display: none;
}

.mobile-nav {
  display: none;
  flex-direction: column;
  background: var(--bg);
  padding: 1rem 1.5rem;
  border-bottom: 1px solid var(--border-light);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
}

.mobile-nav a {
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--border-light);
  color: var(--text-primary);
  font-weight: 500;
  transition: padding-left 0.2s;
}

.mobile-nav a:hover {
  padding-left: 0.5rem;
  color: var(--brand);
  text-decoration: none;
}

.mobile-nav a:last-child {
  border-bottom: none;
}

.mobile-nav.open {
  display: flex;
  animation: slideDown 0.3s ease;
}

@keyframes slideDown {
  from { opacity: 0; transform: translateY(-10px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ===== 按钮 ===== */
.btn {
  display: inline-block;
  background: linear-gradient(135deg, var(--brand), var(--brand-dark));
  color: var(--btn-text);
  padding: 0.85rem 2.2rem;
  border-radius: 50px;
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: all 0.3s ease;
  font-size: 1rem;
  box-shadow: 0 4px 12px rgba(184, 92, 56, 0.2);
}

.btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(184, 92, 56, 0.3);
  color: var(--btn-text);
  text-decoration: none;
}

.btn:active {
  transform: translateY(0);
}

/* ===== Hero区域 ===== */
.hero {
  background: var(--gradient-hero);
  padding: 3.5rem 0;
  border-radius: 0 0 50px 50px;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  top: -50%;
  right: -20%;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.1) 0%, transparent 70%);
  border-radius: 50%;
}

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

.hero-text {
  flex: 1 1 320px;
}

.hero-text p {
  font-size: 1.1rem;
  color: var(--text-primary);
}

.hero-text .hero-subtitle {
  font-size: 1.35rem;
  font-weight: 600;
  color: var(--heading);
  margin-bottom: 0.5rem;
}

.svg-placeholder {
  flex: 1 1 280px;
  background: rgba(255, 255, 255, 0.2);
  backdrop-filter: blur(8px);
  border-radius: 24px;
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 160px;
  padding: 1.5rem;
  border: 1px solid rgba(255, 255, 255, 0.3);
}

.svg-placeholder svg {
  width: 100%;
  height: auto;
  max-width: 300px;
  border-radius: 16px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
}

/* ===== 卡片网格 ===== */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.5rem;
  margin: 2rem 0;
}

.card {
  background: var(--card-bg);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-radius: var(--radius);
  padding: 1.8rem;
  box-shadow: var(--shadow);
  border: 1px solid rgba(255, 255, 255, 0.2);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  position: relative;
  overflow: hidden;
}

.card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--brand), var(--brand-dark));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s ease;
}

.card:hover {
  transform: translateY(-6px);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.12);
}

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

.card h3 {
  margin-top: 0;
  font-size: 1.3rem;
}

.card h4 {
  color: var(--text-accent);
  margin-bottom: 0.5rem;
}

.card p {
  color: var(--text-secondary);
}

/* ===== 文章列表 ===== */
.article-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.5rem;
}

.article-card {
  background: var(--card-bg);
  backdrop-filter: blur(8px);
  border-radius: var(--radius);
  padding: 1.5rem;
  border: 1px solid rgba(255, 255, 255, 0.2);
  transition: transform 0.3s, box-shadow 0.3s;
  display: flex;
  flex-direction: column;
}

.article-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
}

.article-card h4 {
  font-size: 1.15rem;
  color: var(--heading);
  line-height: 1.4;
  margin-bottom: 0.5rem;
}

.article-meta {
  color: var(--text-secondary);
  font-size: 0.85rem;
  margin: 0.5rem 0 0.75rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px dashed var(--border-light);
  opacity: 0.8;
}

.article-card p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  flex-grow: 1;
}

.read-more {
  color: var(--brand);
  font-weight: 600;
  font-size: 0.95rem;
  display: inline-block;
  margin-top: 0.75rem;
  transition: letter-spacing 0.2s;
}

.read-more:hover {
  letter-spacing: 0.5px;
  text-decoration: none;
}

/* ===== 指南区域 ===== */
.howto-box {
  background: var(--bg-soft);
  padding: 2rem;
  border-radius: 24px;
  border: 1px solid var(--border-light);
}

.howto-box ol {
  margin-left: 1.5rem;
  color: var(--text-primary);
}

.howto-box li {
  margin-bottom: 0.5rem;
  padding-left: 0.5rem;
}

.howto-box h3 {
  color: var(--brand);
}

/* ===== FAQ ===== */
.faq-item {
  margin-bottom: 0.75rem;
  border: 1px solid var(--border-light);
  border-radius: 16px;
  padding: 0.6rem 1.2rem;
  background: var(--card-bg);
  backdrop-filter: blur(6px);
  transition: border-color 0.3s;
}

.faq-item:hover {
  border-color: var(--brand);
}

.faq-question {
  font-weight: 600;
  color: var(--heading);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.4rem 0;
  font-size: 1.05rem;
}

.faq-question span {
  font-size: 1.2rem;
  color: var(--brand);
  transition: transform 0.3s;
  flex-shrink: 0;
}

.faq-answer {
  margin-top: 0.5rem;
  color: var(--text-primary);
  padding: 0.5rem 0 0.75rem;
  border-top: 1px dashed var(--border-light);
  animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(-4px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ===== 表格 ===== */
.info-table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5rem 0;
  border-radius: 12px;
  overflow: hidden;
}

.info-table th {
  background: linear-gradient(135deg, var(--brand), var(--brand-dark));
  color: var(--btn-text);
  padding: 0.8rem 1rem;
  text-align: left;
  font-weight: 600;
}

.info-table td {
  border-bottom: 1px solid var(--border-light);
  padding: 0.8rem 1rem;
  color: var(--text-primary);
  transition: background 0.2s;
}

.info-table tr:hover td {
  background: var(--bg-soft);
}

/* ===== 面包屑 ===== */
.breadcrumb {
  padding: 1rem 0;
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.breadcrumb a {
  color: var(--brand-dark);
}

.breadcrumb a:hover {
  text-decoration: underline;
}

/* ===== 联系区域 ===== */
.contact-box {
  display: flex;
  flex-wrap: wrap;
  gap: 2rem;
  background: var(--bg-soft);
  padding: 2rem;
  border-radius: 24px;
  border: 1px solid var(--border-light);
}

.contact-box h4 {
  color: var(--brand);
  font-size: 1.1rem;
  margin-top: 0.5rem;
}

.contact-box p {
  margin-bottom: 0.5rem;
}

/* ===== Footer ===== */
footer {
  background-color: var(--footer-bg);
  color: var(--footer-text);
  padding: 3rem 0 1rem;
  margin-top: 4rem;
  position: relative;
}

footer h4 {
  color: var(--footer-heading);
  font-size: 1.1rem;
  margin-bottom: 0.75rem;
}

footer a {
  color: var(--footer-text);
  opacity: 0.85;
  transition: opacity 0.2s, color 0.2s;
}

footer a:hover {
  color: var(--brand-dark);
  opacity: 1;
  text-decoration: none;
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 2rem;
}

.footer-grid p {
  color: var(--footer-text);
  font-size: 0.95rem;
}

/* ===== 返回顶部 ===== */
.back-to-top {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  background: linear-gradient(135deg, var(--brand), var(--brand-dark));
  color: var(--btn-text);
  padding: 0.8rem 1.2rem;
  border-radius: 50px;
  border: none;
  cursor: pointer;
  font-weight: 700;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
  z-index: 200;
  transition: transform 0.3s, box-shadow 0.3s;
  font-size: 1.1rem;
}

.back-to-top:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.25);
}

/* ===== 动画工具 ===== */
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

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

/* ===== 响应式 ===== */
@media (max-width: 900px) {
  .menu, .search-box {
    display: none;
  }
  
  .mobile-menu-icon {
    display: block;
  }
  
  .mobile-nav.open {
    display: flex;
  }
  
  .nav-wrapper {
    padding: 0.5rem 0;
  }
  
  .logo {
    font-size: 1.5rem;
  }
  
  .hero {
    padding: 2.5rem 0;
    border-radius: 0 0 30px 30px;
  }
  
  .hero-content {
    gap: 1.5rem;
  }
  
  .card-grid {
    grid-template-columns: 1fr;
  }
  
  .article-list {
    grid-template-columns: 1fr;
  }
  
  .contact-box {
    flex-direction: column;
    gap: 1.5rem;
  }
  
  .back-to-top {
    bottom: 1rem;
    right: 1rem;
    padding: 0.6rem 1rem;
    font-size: 1rem;
  }
  
  h1 {
    font-size: 1.8rem;
  }
  
  h2 {
    font-size: 1.5rem;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 16px;
  }
  
  .hero-text p {
    font-size: 1rem;
  }
  
  .btn {
    padding: 0.7rem 1.8rem;
    font-size: 0.95rem;
  }
  
  .card {
    padding: 1.4rem;
  }
  
  .footer-grid {
    grid-template-columns: 1fr;
  }
  
  .faq-question {
    font-size: 1rem;
  }
}

/* ===== 滚动条美化 ===== */
::-webkit-scrollbar {
  width: 10px;
}

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

::-webkit-scrollbar-thumb {
  background: linear-gradient(var(--brand), var(--brand-dark));
  border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--brand-dark);
}

/* ===== 选中文本 ===== */
::selection {
  background: var(--brand);
  color: var(--btn-text);
}

/* ===== 打印样式 ===== */
@media print {
  .sticky-nav, .back-to-top, .mobile-nav {
    display: none !important;
  }
  
  body {
    background: white;
    color: black;
  }
  
  .card, .article-card {
    break-inside: avoid;
    border: 1px solid #ccc;
  }
}
```