```css
/* ============================================================
   蜜桃影院 - 完整样式表 (style.css)
   风格: 蜜桃暖阳 · 现代玻璃质感 · 响应式
   ============================================================ */

/* ---------- CSS 变量 (主题令牌) ---------- */
:root {
  /* 主色板 */
  --color-primary: #1e3a5f;
  --color-primary-dark: #0b2545;
  --color-primary-light: #2d4f7c;
  --color-accent: #f5a623;
  --color-accent-hover: #ffb84d;
  --color-accent-glow: rgba(245, 166, 35, 0.4);

  /* 中性色 */
  --color-bg: #f8fafc;
  --color-surface: #ffffff;
  --color-text: #0f172a;
  --color-text-soft: #475569;
  --color-border: #e2e8f0;

  /* 毛玻璃 */
  --glass-bg: rgba(255, 255, 255, 0.65);
  --glass-border: rgba(255, 255, 255, 0.3);
  --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.08);

  /* 渐变 */
  --gradient-hero: linear-gradient(145deg, #0b2545 0%, #1e3a5f 60%, #2d4f7c 100%);
  --gradient-card: linear-gradient(135deg, rgba(245, 166, 35, 0.08) 0%, rgba(255, 255, 255, 0) 40%);
  --gradient-btn: linear-gradient(135deg, #f5a623 0%, #f7b845 100%);

  /* 圆角 */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-full: 999px;

  /* 阴影 */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.12);

  /* 字体 */
  --font-sans: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Microsoft YaHei", sans-serif;

  /* 过渡 */
  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);

  /* 滚动动画偏移量 */
  --scroll-offset: 80px;
}

/* ---------- 暗色模式 ---------- */
[data-theme="dark"] {
  --color-bg: #0f172a;
  --color-surface: #1e293b;
  --color-text: #f1f5f9;
  --color-text-soft: #94a3b8;
  --color-border: #334155;
  --glass-bg: rgba(30, 41, 59, 0.7);
  --glass-border: rgba(148, 163, 184, 0.2);
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.5);
}

/* 自动暗色模式 (跟随系统) */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --color-bg: #0f172a;
    --color-surface: #1e293b;
    --color-text: #f1f5f9;
    --color-text-soft: #94a3b8;
    --color-border: #334155;
    --glass-bg: rgba(30, 41, 59, 0.7);
    --glass-border: rgba(148, 163, 184, 0.2);
  }
}

/* ---------- 基础重置与全局样式 ---------- */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

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

body {
  font-family: var(--font-sans);
  background-color: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  min-height: 100vh;
  transition: background-color var(--transition-base), color var(--transition-base);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

a {
  color: inherit;
  text-decoration: none;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

input {
  font-family: inherit;
}

.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
}

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

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

::-webkit-scrollbar-thumb {
  background: var(--color-primary-light);
  border-radius: var(--radius-full);
  border: 2px solid var(--color-bg);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--color-accent);
}

/* 选中文本样式 */
::selection {
  background: var(--color-accent);
  color: var(--color-primary-dark);
}

/* ---------- 滚动动画 (Intersection Observer 配合) ---------- */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s ease-out, transform 0.7s ease-out;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* 为所有 section 添加滚动偏移 */
section[id] {
  scroll-margin-top: var(--scroll-offset);
}

/* ---------- 面包屑导航 ---------- */
.breadcrumb {
  background: var(--color-border);
  padding: 12px 0;
  font-size: 0.9rem;
  border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

.breadcrumb a {
  color: var(--color-primary);
  font-weight: 500;
  transition: color var(--transition-fast);
}

.breadcrumb a:hover {
  color: var(--color-accent);
}

.breadcrumb .container {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 4px;
  color: var(--color-text-soft);
}

/* ---------- 吸顶导航 (毛玻璃效果) ---------- */
.nav {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: var(--glass-bg);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-bottom: 1px solid var(--glass-border);
  box-shadow: var(--shadow-md);
  transition: background-color var(--transition-base), box-shadow var(--transition-base);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 0;
  flex-wrap: wrap;
  gap: 12px;
}

.logo {
  font-weight: 800;
  font-size: 1.5rem;
  color: var(--color-accent);
  letter-spacing: 1px;
  white-space: nowrap;
  text-shadow: 0 2px 4px rgba(245, 166, 35, 0.3);
  transition: transform var(--transition-fast);
}

.logo:hover {
  transform: scale(1.03);
}

.menu {
  display: flex;
  gap: 28px;
  flex-wrap: wrap;
  align-items: center;
}

.menu a {
  color: var(--color-text);
  font-weight: 500;
  font-size: 0.95rem;
  position: relative;
  padding: 4px 0;
  transition: color var(--transition-fast);
}

.menu a::after {
  content: "";
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-accent);
  transition: width var(--transition-base);
  border-radius: var(--radius-full);
}

.menu a:hover {
  color: var(--color-accent);
}

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

/* 搜索框 */
.search-box {
  display: flex;
  align-items: center;
  background: var(--color-surface);
  border-radius: var(--radius-full);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  border: 1px solid var(--color-border);
  transition: box-shadow var(--transition-fast), border-color var(--transition-fast);
}

.search-box:focus-within {
  box-shadow: 0 0 0 3px var(--color-accent-glow);
  border-color: var(--color-accent);
}

.search-box input {
  padding: 8px 16px;
  border: none;
  outline: none;
  background: transparent;
  color: var(--color-text);
  width: 180px;
  font-size: 0.9rem;
}

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

.search-box button {
  background: var(--color-accent);
  border: none;
  padding: 8px 16px;
  cursor: pointer;
  font-weight: bold;
  color: var(--color-primary-dark);
  transition: background var(--transition-fast);
}

.search-box button:hover {
  background: var(--color-accent-hover);
}

/* ---------- Hero 区域 (渐变Banner) ---------- */
.hero {
  background: var(--gradient-hero);
  color: white;
  padding: 80px 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}

/* 装饰性光斑 */
.hero::before {
  content: "";
  position: absolute;
  top: -50%;
  left: -20%;
  width: 60%;
  height: 200%;
  background: radial-gradient(circle, rgba(245, 166, 35, 0.15) 0%, transparent 70%);
  animation: float 8s ease-in-out infinite;
  pointer-events: none;
}

.hero::after {
  content: "";
  position: absolute;
  bottom: -50%;
  right: -20%;
  width: 60%;
  height: 200%;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.08) 0%, transparent 70%);
  animation: float 10s ease-in-out infinite reverse;
  pointer-events: none;
}

@keyframes float {
  0%, 100% { transform: translateY(0) rotate(0deg); }
  50% { transform: translateY(-30px) rotate(3deg); }
}

.hero .container {
  position: relative;
  z-index: 1;
}

.hero h1 {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 800;
  margin-bottom: 1rem;
  color: var(--color-accent);
  text-shadow: 0 4px 20px rgba(245, 166, 35, 0.3);
  letter-spacing: 2px;
  animation: slideUp 0.8s ease-out both;
}

.hero p {
  font-size: clamp(1rem, 2vw, 1.25rem);
  max-width: 800px;
  margin: 0 auto 30px;
  opacity: 0.95;
  line-height: 1.8;
  animation: slideUp 0.8s ease-out 0.2s both;
}

@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* 按钮 */
.btn {
  display: inline-block;
  background: var(--gradient-btn);
  color: var(--color-primary-dark);
  padding: 14px 36px;
  border-radius: var(--radius-full);
  font-weight: 700;
  font-size: 1rem;
  box-shadow: 0 4px 20px rgba(245, 166, 35, 0.4);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
  animation: slideUp 0.8s ease-out 0.4s both;
}

.btn:hover {
  transform: translateY(-3px) scale(1.02);
  box-shadow: 0 8px 30px rgba(245, 166, 35, 0.5);
}

/* ---------- 通用 Section ---------- */
.section {
  padding: 60px 0;
}

.section h2 {
  font-size: clamp(1.5rem, 3vw, 2.2rem);
  font-weight: 700;
  margin-bottom: 30px;
  border-left: 6px solid var(--color-accent);
  padding-left: 18px;
  line-height: 1.3;
  color: var(--color-primary);
  transition: color var(--transition-base);
}

.section h2:hover {
  color: var(--color-accent);
}

.section p {
  color: var(--color-text-soft);
  line-height: 1.8;
  margin-bottom: 1rem;
}

/* ---------- 卡片网格 ---------- */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 24px;
  margin-bottom: 30px;
}

.card {
  background: var(--color-surface);
  border-radius: var(--radius-md);
  padding: 28px 24px;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-border);
  transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
  position: relative;
  overflow: hidden;
}

.card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient-btn);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-base);
}

.card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
  border-color: transparent;
}

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

.card h3 {
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--color-primary);
  transition: color var(--transition-fast);
}

.card:hover h3 {
  color: var(--color-accent);
}

.card p {
  font-size: 0.95rem;
  color: var(--color-text-soft);
  line-height: 1.7;
}

/* ---------- 文章列表 ---------- */
.article-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.article-item {
  background: var(--color-surface);
  padding: 24px;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-border);
  transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
}

.article-item:hover {
  transform: translateX(8px);
  box-shadow: var(--shadow-md);
  border-color: var(--color-accent);
}

.article-item h3 {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 8px;
  transition: color var(--transition-fast);
}

.article-item:hover h3 {
  color: var(--color-accent);
}

.article-item p {
  font-size: 0.9rem;
  color: var(--color-text-soft);
  margin-bottom: 8px;
}

.article-item a {
  color: var(--color-accent);
  font-weight: 600;
  font-size: 0.9rem;
  transition: color var(--transition-fast), padding-left var(--transition-fast);
}

.article-item a:hover {
  color: var(--color-primary);
  padding-left: 4px;
}

/* ---------- FAQ 手风琴 ---------- */
.faq-item {
  background: var(--color-surface);
  padding: 20px 24px;
  border-radius: var(--radius-md);
  margin-bottom: 14px;
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition-base), border-color var(--transition-base);
}

.faq-item:hover {
  box-shadow: var(--shadow-md);
  border-color: var(--color-accent);
}

details summary {
  cursor: pointer;
  font-weight: 600;
  font-size: 1rem;
  color: var(--color-text);
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  transition: color var(--transition-fast);
}

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

details summary::after {
  content: "＋";
  font-size: 1.4rem;
  color: var(--color-accent);
  transition: transform var(--transition-base);
  flex-shrink: 0;
}

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

details[open] summary {
  color: var(--color-accent);
  margin-bottom: 12px;
}

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

details p {
  padding-top: 12px;
  border-top: 1px dashed var(--color-border);
  color: var(--color-text-soft);
  font-size: 0.95rem;
  line-height: 1.7;
}

/* ---------- HowTo 教程 ---------- */
.howto {
  background: var(--color-surface);
  padding: 30px;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  border: 1px solid var(--color-border);
}

.howto h3 {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 16px;
}

.howto p {
  margin-bottom: 12px;
}

.howto ol {
  padding-left: 24px;
  margin: 16px 0;
}

.howto li {
  padding: 6px 0;
  color: var(--color-text-soft);
  line-height: 1.7;
}

.howto li::marker {
  color: var(--color-accent);
  font-weight: bold;
}

/* ---------- 联系区域 ---------- */
#contact {
  background: var(--color-border) !important;
}

#contact .container {
  max-width: 1280px;
}

#contact h2 {
  color: var(--color-primary);
}

#contact p {
  color: var(--color-text-soft);
  margin-bottom: 8px;
}

#contact a {
  color: var(--color-primary);
  font-weight: 500;
  transition: color var(--transition-fast);
}

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

/* ---------- 页脚 ---------- */
.footer {
  background: var(--color-primary-dark);
  color: #cbd5e1;
  padding: 50px 0 40px;
  margin-top: 60px;
  border-top: 3px solid var(--color-accent);
}

.footer .container {
  display: grid;
  gap: 12px;
}

.footer p {
  font-size: 0.9rem;
  line-height: 1.8;
}

.footer a {
  color: #cbd5e1;
  text-decoration: none;
  margin-right: 16px;
  transition: color var(--transition-fast);
}

.footer a:hover {
  color: var(--color-accent);
}

/* ---------- 返回顶部 ---------- */
.back-to-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  background: var(--color-primary);
  color: white;
  padding: 12px 20px;
  border-radius: var(--radius-full);
  text-decoration: none;
  font-weight: bold;
  box-shadow: var(--shadow-lg);
  transition: transform var(--transition-base), background var(--transition-base), box-shadow var(--transition-base);
  z-index: 999;
  border: 2px solid rgba(255, 255, 255, 0.2);
}

.back-to-top:hover {
  transform: translateY(-4px);
  background: var(--color-accent);
  color: var(--color-primary-dark);
  box-shadow: 0 8px 30px rgba(245, 166, 35, 0.4);
}

/* ---------- 响应式设计 ---------- */

/* 平板 (≤1024px) */
@media (max-width: 1024px) {
  .container {
    padding: 0 20px;
  }

  .menu {
    gap: 20px;
  }

  .search-box input {
    width: 140px;
  }

  .hero {
    padding: 60px 0;
  }
}

/* 手机 (≤768px) */
@media (max-width: 768px) {
  .container {
    padding: 0 16px;
  }

  .nav-inner {
    flex-direction: column;
    align-items: stretch;
    gap: 12px;
    padding: 12px 0;
  }

  .logo {
    text-align: center;
    font-size: 1.4rem;
  }

  .menu {
    justify-content: center;
    gap: 16px;
    font-size: 0.9rem;
  }

  .search-box {
    width: 100%;
  }

  .search-box input {
    flex: 1;
    width: auto;
  }

  .hero h1 {
    font-size: 1.8rem;
  }

  .hero p {
    font-size: 1rem;
  }

  .section {
    padding: 40px 0;
  }

  .section h2 {
    font-size: 1.4rem;
  }

  .card-grid {
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 16px;
  }

  .card {
    padding: 20px;
  }

  .article-item {
    padding: 18px;
  }

  .faq-item {
    padding: 16px 18px;
  }

  .howto {
    padding: 20px;
  }

  .back-to-top {
    bottom: 20px;
    right: 20px;
    padding: 10px 16px;
    font-size: 0.9rem;
  }

  .footer {
    padding: 40px 0 30px;
    text-align: center;
  }

  .footer a {
    display: inline-block;
    margin: 4px 8px;
  }
}

/* 小屏手机 (≤480px) */
@media (max-width: 480px) {
  .menu {
    gap: 12px;
  }

  .menu a {
    font-size: 0.85rem;
  }

  .hero {
    padding: 40px 0;
  }

  .hero h1 {
    font-size: 1.5rem;
    letter-spacing: 1px;
  }

  .card-grid {
    grid-template-columns: 1fr;
  }

  .btn {
    padding: 12px 28px;
    font-size: 0.9rem;
  }

  .section h2 {
    font-size: 1.2rem;
    padding-left: 12px;
  }

  .breadcrumb {
    font-size: 0.8rem;
  }
}

/* ---------- 无障碍与动效优化 ---------- */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }

  .fade-in {
    opacity: 1;
    transform: none;
  }
}

/* ---------- 打印样式 ---------- */
@media print {
  .nav,
  .hero,
  .search-box,
  .back-to-top,
  .footer {
    display: none !important;
  }

  body {
    background: white;
    color: black;
  }

  .section {
    padding: 20px 0;
  }
}

/* ---------- 暗色模式适配增强 ---------- */
@media (prefers-color-scheme: dark) {
  .breadcrumb {
    background: var(--color-border);
  }

  .card,
  .article-item,
  .faq-item,
  .howto {
    background: var(--color-surface);
    border-color: var(--color-border);
  }

  .search-box {
    background: var(--color-surface);
    border-color: var(--color-border);
  }

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

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

/* ---------- 工具类 ---------- */
.text-center {
  text-align: center;
}

.mt-1 { margin-top: 1rem; }
.mt-2 { margin-top: 2rem; }
.mt-3 { margin-top: 3rem; }
.mb-1 { margin-bottom: 1rem; }
.mb-2 { margin-bottom: 2rem; }
.mb-3 { margin-bottom: 3rem; }

/* 渐变文字 */
.gradient-text {
  background: var(--gradient-btn);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

/* 毛玻璃卡片 */
.glass-card {
  background: var(--glass-bg);
  backdrop-filter: blur(16px) saturate(180%);
  -webkit-backdrop-filter: blur(16px) saturate(180%);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--glass-shadow);
}

/* 装饰性分隔线 */
.divider {
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--color-accent), transparent);
  border: none;
  margin: 40px auto;
  max-width: 600px;
}

/* 版权声明 */
.copyright {
  font-size: 0.85rem;
  opacity: 0.8;
  letter-spacing: 0.5px;
}

/* 安全声明图标 */
.security-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  background: rgba(245, 166, 35, 0.15);
  border-radius: var(--radius-full);
  font-size: 0.85rem;
  color: var(--color-accent);
  font-weight: 600;
}

/* 响应式字体调整 */
@media (max-width: 768px) {
  .security-badge {
    font-size: 0.75rem;
    padding: 4px 10px;
  }
}
```