```css
/* ==========================================================================
   肯丁4D影院 - 沉浸式观影体验 style.css
   网站: njkending.com
   ========================================================================== */

/* ---------- 全局重置 ---------- */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

/* ---------- 设计令牌 ---------- */
:root {
  --bg-primary: #f4f6fb;
  --bg-secondary: #ffffff;
  --bg-tertiary: #eef1f8;
  --bg-glass: rgba(255, 255, 255, 0.72);
  --bg-glass-border: rgba(255, 255, 255, 0.6);

  --text-primary: #0f172a;
  --text-secondary: #334155;
  --text-muted: #64748b;

  --accent: #e11d48;
  --accent-hover: #be123c;
  --accent-light: #ffe4e6;
  --accent-glow: rgba(225, 29, 72, 0.28);
  --accent-gradient: linear-gradient(135deg, #e11d48 0%, #f43f5e 45%, #fb7185 100%);
  --hero-gradient: linear-gradient(125deg, #1e1b4b 0%, #0f172a 45%, #3b0d2a 100%);

  --border: #e2e8f0;
  --border-strong: #cbd5e1;

  --shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.06);
  --shadow: 0 4px 14px -2px rgba(15, 23, 42, 0.08), 0 2px 4px -2px rgba(15, 23, 42, 0.05);
  --shadow-lg: 0 24px 48px -12px rgba(15, 23, 42, 0.18), 0 8px 16px -8px rgba(15, 23, 42, 0.08);
  --shadow-accent: 0 12px 28px -8px rgba(225, 29, 72, 0.45);

  --radius-xs: 6px;
  --radius-sm: 10px;
  --radius: 16px;
  --radius-lg: 24px;
  --radius-pill: 999px;

  --transition: 0.28s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.6s cubic-bezier(0.4, 0, 0.2, 1);

  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Helvetica, Arial, sans-serif;

  --header-height: 68px;
  --container-max: 1200px;
  --container-pad: 20px;
}

/* ---------- 暗色模式 ---------- */
[data-theme="dark"] {
  --bg-primary: #0b0f1a;
  --bg-secondary: #111827;
  --bg-tertiary: #1a2334;
  --bg-glass: rgba(17, 24, 39, 0.68);
  --bg-glass-border: rgba(148, 163, 184, 0.14);

  --text-primary: #f1f5f9;
  --text-secondary: #cbd5e1;
  --text-muted: #94a3b8;

  --accent: #fb7185;
  --accent-hover: #f43f5e;
  --accent-light: #4c1d24;
  --accent-glow: rgba(251, 113, 133, 0.32);
  --accent-gradient: linear-gradient(135deg, #f43f5e 0%, #fb7185 55%, #fda4af 100%);
  --hero-gradient: linear-gradient(125deg, #0f172a 0%, #1e1b4b 50%, #4c0519 100%);

  --border: #1e293b;
  --border-strong: #334155;

  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.4);
  --shadow: 0 4px 14px -2px rgba(0, 0, 0, 0.5);
  --shadow-lg: 0 24px 48px -12px rgba(0, 0, 0, 0.65);
  --shadow-accent: 0 12px 28px -8px rgba(251, 113, 133, 0.4);
}

/* ---------- 基础元素 ---------- */
html {
  scroll-behavior: smooth;
  font-size: 16px;
  scroll-padding-top: calc(var(--header-height) + 16px);
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-primary);
  background-image:
    radial-gradient(circle at 12% 0%, var(--accent-glow) 0%, transparent 32%),
    radial-gradient(circle at 88% 8%, rgba(99, 102, 241, 0.14) 0%, transparent 30%);
  background-attachment: fixed;
  color: var(--text-primary);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  transition: background-color var(--transition), color var(--transition);
  overflow-x: hidden;
}

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

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

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

a:focus-visible,
button:focus-visible,
input:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
  border-radius: var(--radius-xs);
}

ul,
ol {
  list-style: none;
}

::selection {
  background-color: var(--accent);
  color: #fff;
}

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

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

::-webkit-scrollbar-thumb {
  background: var(--border-strong);
  border-radius: var(--radius-pill);
}

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

/* ---------- 布局容器 ---------- */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-pad);
}

main.container {
  padding-top: 8px;
  padding-bottom: 24px;
}

/* ---------- 导航吸顶 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: var(--bg-glass);
  -webkit-backdrop-filter: blur(18px) saturate(180%);
  backdrop-filter: blur(18px) saturate(180%);
  border-bottom: 1px solid var(--bg-glass-border);
  box-shadow: var(--shadow-sm);
  transition: background-color var(--transition), border-color var(--transition),
    box-shadow var(--transition);
}

.nav-wrapper {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-height);
  gap: 16px;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 1.2rem;
  color: var(--text-primary);
  white-space: nowrap;
  letter-spacing: -0.01em;
  transition: transform var(--transition);
}

.brand-logo:hover {
  transform: translateY(-1px);
}

.brand-logo svg {
  width: 36px;
  height: 36px;
  flex-shrink: 0;
  border-radius: var(--radius-sm);
  box-shadow: 0 4px 12px -2px var(--accent-glow);
  transition: transform var(--transition), box-shadow var(--transition);
}

.brand-logo:hover svg {
  transform: rotate(-6deg) scale(1.05);
  box-shadow: 0 8px 18px -4px var(--accent-glow);
}

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

.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
  overflow-x: auto;
  scrollbar-width: none;
  -ms-overflow-style: none;
}

.nav-links::-webkit-scrollbar {
  display: none;
}

.nav-links a {
  position: relative;
  padding: 8px 12px;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
  white-space: nowrap;
  transition: background-color var(--transition), color var(--transition);
}

.nav-links a::after {
  content: "";
  position: absolute;
  left: 12px;
  right: 12px;
  bottom: 4px;
  height: 2px;
  border-radius: 2px;
  background: var(--accent-gradient);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition);
}

.nav-links a:hover {
  background-color: var(--bg-tertiary);
  color: var(--accent);
}

.nav-links a:hover::after {
  transform: scaleX(1);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}

/* 搜索框 */
.search-box {
  display: flex;
  align-items: center;
  background-color: var(--bg-tertiary);
  border-radius: var(--radius-pill);
  padding: 4px 12px;
  border: 1px solid var(--border);
  transition: border-color var(--transition), box-shadow var(--transition),
    background-color var(--transition);
}

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

.search-box input {
  border: none;
  background: transparent;
  padding: 6px 4px;
  font-size: 0.85rem;
  font-family: inherit;
  color: var(--text-primary);
  outline: none;
  width: 120px;
  transition: width var(--transition);
}

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

.search-box:focus-within input {
  width: 150px;
}

.search-box button {
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  transition: color var(--transition), transform var(--transition);
}

.search-box button:hover {
  color: var(--accent);
  transform: scale(1.12);
}

/* 主题切换 / 移动菜单按钮 */
.theme-toggle,
.mobile-menu-btn {
  background-color: var(--bg-tertiary);
  border: 1px solid var(--border);
  border-radius: 50%;
  width: 38px;
  height: 38px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: var(--text-secondary);
  transition: background-color var(--transition), color var(--transition),
    transform var(--transition), border-color var(--transition);
}

.theme-toggle:hover,
.mobile-menu-btn:hover {
  background-color: var(--accent-light);
  color: var(--accent);
  border-color: var(--accent);
  transform: rotate(12deg) scale(1.06);
}

.theme-toggle:active,
.mobile-menu-btn:active {
  transform: scale(0.94);
}

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

/* ---------- 移动菜单 ---------- */
.mobile-nav {
  display: none;
  position: fixed;
  top: var(--header-height);
  left: 0;
  right: 0;
  bottom: 0;
  background-color: var(--bg-glass);
  -webkit-backdrop-filter: blur(22px) saturate(180%);
  backdrop-filter: blur(22px) saturate(180%);
  z-index: 99;
  padding: 16px;
  overflow-y: auto;
  border-top: 1px solid var(--border);
  animation: slideDown 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

@keyframes slideDown {
  from {
    opacity: 0;
    transform: translateY(-12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.mobile-nav.active {
  display: block;
}

.mobile-nav a {
  display: block;
  padding: 14px 16px;
  font-size: 1rem;
  font-weight: 500;
  color: var(--text-secondary);
  border-bottom: 1px solid var(--border);
  border-radius: var(--radius-sm);
  transition: color var(--transition), background-color var(--transition),
    padding-left var(--transition);
}

.mobile-nav a:hover {
  color: var(--accent);
  background-color: var(--bg-tertiary);
  padding-left: 22px;
}

/* ---------- 面包屑 ---------- */
.breadcrumb {
  padding: 14px 0;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  align-items: center;
}

.breadcrumb li {
  display: flex;
  align-items: center;
  gap: 6px;
}

.breadcrumb li:not(:last-child)::after {
  content: "›";
  color: var(--text-muted);
  margin-left: 6px;
}

.breadcrumb a {
  color: var(--text-secondary);
}

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

.breadcrumb li[aria-current="page"] {
  color: var(--text-primary);
  font-weight: 600;
}

/* ---------- Banner 轮播 ---------- */
.hero {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-lg);
  margin-bottom: 40px;
  background: var(--hero-gradient);
  min-height: 420px;
  display: flex;
  align-items: center;
  box-shadow: var(--shadow-lg);
  isolation: isolate;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 78% 30%, rgba(251, 113, 133, 0.28) 0%, transparent 42%),
    radial-gradient(circle at 18% 80%, rgba(99, 102, 241, 0.22) 0%, transparent 46%);
  z-index: 0;
  pointer-events: none;
}

.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.035) 1px, transparent 1px);
  background-size: 44px 44px;
  z-index: 0;
  pointer-events: none;
  mask-image: radial-gradient(circle at 50% 50%, #000 0%, transparent 78%);
  -webkit-mask-image: radial-gradient(circle at 50% 50%, #000 0%, transparent 78%);
}

.hero-slide {
  position: absolute;
  inset: 0;
  opacity: 0;
  transform: scale(1.02);
  transition: opacity 0.8s ease, transform 0.8s ease;
  display: flex;
  align-items: center;
  padding: 48px;
  pointer-events: none;
  z-index: 1;
}

.hero-slide.active {
  opacity: 1;
  transform: scale(1);
  pointer-events: auto;
}

.hero-content {
  max-width: 620px;
  color: #fff;
  position: relative;
  z-index: 2;
}

.hero-content h1 {
  font-size: 2.3rem;
  line-height: 1.28;
  margin-bottom: 18px;
  font-weight: 800;
  letter-spacing: -0.025em;
  text-shadow: 0 2px 24px rgba(0, 0, 0, 0.3);
}

.hero-content h1 span {
  background: linear-gradient(120deg, #fb7185 0%, #fda4af 50%, #fde68a 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: #fb7185;
}

.hero-content p {
  font-size: 1rem;
  color: #cbd5e1;
  margin-bottom: 26px;
  line-height: 1.75;
  max-width: 540px;
}

.hero-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--accent-gradient);
  color: #fff;
  padding: 13px 30px;
  border-radius: var(--radius-pill);
  font-weight: 700;
  font-size: 0.95rem;
  box-shadow: var(--shadow-accent);
  transition: transform var(--transition), box-shadow var(--transition),
    filter var(--transition);
}

.hero-cta:hover {
  color: #fff;
  transform: translateY(-3px) scale(1.02);
  box-shadow: 0 18px 36px -10px rgba(225, 29, 72, 0.6);
  filter: brightness(1.06);
}

.hero-cta:active {
  transform: translateY(-1px) scale(0.99);
}

.hero-visual {
  position: absolute;
  right: 48px;
  top: 50%;
  transform: translateY(-50%);
  width: 300px;
  height: 300px;
  opacity: 0.92;
  z-index: 1;
  animation: floatY 7s ease-in-out infinite;
  filter: drop-shadow(0 0 24px rgba(251, 113, 133, 0.35));
}

@keyframes floatY {
  0%,
  100% {
    transform: translateY(-50%) translateY(0);
  }
  50% {
    transform: translateY(-50%) translateY(-14px);
  }
}

.hero-dots {
  position: absolute;
  bottom: 22px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 10px;
  z-index: 3;
}

.hero-dots button {
  width: 10px;
  height: 10px;
  border-radius: var(--radius-pill);
  border: 2px solid rgba(255, 255, 255, 0.5);
  background: transparent;
  cursor: pointer;
  padding: 0;
  transition: background-color var(--transition), border-color var(--transition),
    width var(--transition);
}

.hero-dots button:hover {
  border-color: #fff;
  background: rgba(255, 255, 255, 0.4);
}

.hero-dots button.active {
  width: 28px;
  background: #fff;
  border-color: #fff;
  box-shadow: 0 0 12px rgba(255, 255, 255, 0.6);
}

/* ---------- 通用区块 ---------- */
section {
  margin-bottom: 52px;
}

.section-header {
  margin-bottom: 28px;
}

.section-header h2 {
  font-size: 1.65rem;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 10px;
  letter-spacing: -0.015em;
  line-height: 1.35;
}

.section-header p {
  color: var(--text-muted);
  font-size: 0.95rem;
  max-width: 760px;
  line-height: 1.8;
}

.section-header .accent-line {
  display: inline-block;
  width: 48px;
  height: 4px;
  background: var(--accent-gradient);
  border-radius: 2px;
  margin-bottom: 14px;
  box-shadow: 0 2px 10px var(--accent-glow);
}

/* ---------- 网格系统 ---------- */
.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

/* ---------- 卡片（毛玻璃 + 圆角 + hover） ---------- */
.card {
  position: relative;
  background-color: var(--bg-glass);
  -webkit-backdrop-filter: blur(16px) saturate(160%);
  backdrop-filter: blur(16px) saturate(160%);
  border: 1px solid var(--bg-glass-border);
  border-radius: var(--radius);
  padding: 26px;
  box-shadow: var(--shadow);
  transition: transform var(--transition), box-shadow var(--transition),
    border-color var(--transition), background-color var(--transition);
  overflow: hidden;
}

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

.card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
  border-color: var(--accent);
}

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

.card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 10px;
  color: var(--text-primary);
  line-height: 1.45;
}

.card h4 {
  font-size: 0.95rem;
  font-weight: 700;
  margin-bottom: 6px;
  margin-top: 14px;
  color: var(--text-primary);
}

.card h4:first-child {
  margin-top: 0;
}

.card p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.78;
}

.card p + p {
  margin-top: 8px;
}

.card-icon {
  width: 46px;
  height: 46px;
  border-radius: var(--radius-sm);
  background: var(--accent-light);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
  color: var(--accent);
  transition: transform var(--transition), background-color var(--transition),
    box-shadow var(--transition);
}

.card:hover .card-icon {
  transform: scale(1.1) rotate(-6deg);
  box-shadow: 0 8px 20px -6px var(--accent-glow);
}

/* ---------- 数字统计 ---------- */
.stats-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin: 24px 0;
}

.stat-item {
  position: relative;
  text-align: center;
  padding: 26px 12px;
  background-color: var(--bg-glass);
  -webkit-backdrop-filter: blur(16px) saturate(160%);
  backdrop-filter: blur(16px) saturate(160%);
  border: 1px solid var(--bg-glass-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
  transition: transform var(--transition), box-shadow var(--transition),
    border-color var(--transition);
}

.stat-item::after {
  content: "";
  position: absolute;
  inset: auto 0 0 0;
  height: 3px;
  background: var(--accent-gradient);
  transform: scaleX(0);
  transition: transform var(--transition-slow);
}

.stat-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--accent);
}

.stat-item:hover::after {
  transform: scaleX(1);
}

.stat-number {
  font-size: 2.1rem;
  font-weight: 800;
  line-height: 1.2;
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: var(--accent);
  font-variant-numeric: tabular-nums;
}

.stat-label {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-top: 6px;
  font-weight: 500;
}

/* ---------- FAQ 手风琴 ---------- */
.faq-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.faq-item {
  background-color: var(--bg-glass);
  -webkit-backdrop-filter: blur(16px) saturate(160%);
  backdrop-filter: blur(16px) saturate(160%);
  border: 1px solid var(--bg-glass-border);
  border-radius: var(--radius-sm);
  overflow: hidden;
  transition: border-color var(--transition), box-shadow var(--transition),
    background-color var(--transition);
}

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

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

.faq-question {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  padding: 18px 22px;
  background: none;
  border: none;
  cursor: pointer;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-primary);
  text-align: left;
  font-family: inherit;
  line-height: 1.55;
  transition: color var(--transition), background-color var(--transition);
}

.faq-question:hover {
  color: var(--accent);
  background-color: var(--bg-tertiary);
}

.faq-question .arrow {
  flex-shrink: 0;
  transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1), color var(--transition);
  color: var(--text-muted);
  font-size: 1.1rem;
  line-height: 1;
}

.faq-item.open .faq-question {
  color: var(--accent);
}

.faq-item.open .faq-question .arrow {
  transform: rotate(180deg);
  color: var(--accent);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.38s cubic-bezier(0.4, 0, 0.2, 1), padding 0.38s ease;
  padding: 0 22px;
}

.faq-item.open .faq-answer {
  max-height: 600px;
  padding: 0 22px 18px;
}

.faq-answer p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.8;
  padding-top: 2px;
  border-top: 1px dashed var(--border);
  padding-top: 14px;
}

/* ---------- 文章列表 ---------- */
.article-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.article-card {
  background-color: var(--bg-glass);
  -webkit-backdrop-filter: blur(16px) saturate(160%);
  backdrop-filter: blur(16px) saturate(160%);
  border: 1px solid var(--bg-glass-border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform var(--transition), box-shadow var(--transition),
    border-color var(--transition);
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow);
}

.article-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
  border-color: var(--accent);
}

.article-thumb {
  width: 100%;
  aspect-ratio: 16 / 9;
  background: var(--hero-gradient);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  position: relative;
}

.article-thumb::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 55%, rgba(0, 0, 0, 0.22) 100%);
  pointer-events: none;
}

.article-thumb svg {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.article-card:hover .article-thumb svg {
  transform: scale(1.06);
}

.article-body {
  padding: 22px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 14px;
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-bottom: 10px;
}

.article-meta span {
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.article-meta span:last-child {
  padding: 1px 10px;
  background-color: var(--accent-light);
  color: var(--accent);
  border-radius: var(--radius-pill);
  font-weight: 600;
}

.article-body h3 {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 10px;
  color: var(--text-primary);
  line-height: 1.5;
  transition: color var(--transition);
}

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

.article-body p {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.78;
  flex: 1;
  margin-bottom: 16px;
}

.read-more {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--accent);
  display: inline-flex;
  align-items: center;
  gap: 4px;
  align-self: flex-start;
  transition: color var(--transition), gap var(--transition);
}

.read-more:hover {
  color: var(--accent-hover);
  gap: 8px;
}

/* ---------- HowTo 步骤 ---------- */
.howto-steps {
  display: flex;
  flex-direction: column;
  gap: 16px;
  counter-reset: step;
}

.howto-step {
  position: relative;
  background-color: var(--bg-glass);
  -webkit-backdrop-filter: blur(16px) saturate(160%);
  backdrop-filter: blur(16px) saturate(160%);
  border: 1px solid var(--bg-glass-border);
  border-radius: var(--radius);
  padding: 22px 22px 22px 72px;
  counter-increment: step;
  box-shadow: var(--shadow);
  transition: transform var(--transition), box-shadow var(--transition),
    border-color var(--transition);
}

.howto-step:hover {
  transform: translateX(4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--accent);
}

.howto-step::before {
  content: counter(step);
  position: absolute;
  left: 18px;
  top: 22px;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: var(--accent-gradient);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 0.95rem;
  box-shadow: 0 6px 16px -4px var(--accent-glow);
  transition: transform var(--transition);
}

.howto-step:hover::before {
  transform: scale(1.08) rotate(-6deg);
}

.howto-step h4 {
  font-size: 0.98rem;
  font-weight: 700;
  margin-bottom: 6px;
  color: var(--text-primary);
}

.howto-step p {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.78;
}

/* ---------- 客户评价 ---------- */
.testimonial-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.testimonial-card {
  position: relative;
  background-color: var(--bg-glass);
  -webkit-backdrop-filter: blur(16px) saturate(160%);
  backdrop-filter: blur(16px) saturate(160%);
  border: 1px solid var(--bg-glass-border);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow);
  transition: transform var(--transition), box-shadow var(--transition),
    border-color var(--transition);
}

.testimonial-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--accent);
}

.testimonial-stars {
  color: #f59e0b;
  font-size: 0.9rem;
  margin-bottom: 12px;
  letter-spacing: 3px;
  text-shadow: 0 1px 3px rgba(245, 158, 11, 0.3);
}

.testimonial-text {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 16px;
  font-style: italic;
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: 10px;
  padding-top: 14px;
  border-top: 1px dashed var(--border);
}

.testimonial-avatar {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: var(--accent-light);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  color: var(--accent);
  font-size: 0.85rem;
  flex-shrink: 0;
  transition: transform var(--transition);
}

.testimonial-card:hover .testimonial-avatar {
  transform: scale(1.1);
}

.testimonial-author strong {
  display: block;
  font-size: 0.85rem;
  color: var(--text-primary);
  font-weight: 700;
}

.testimonial-author span {
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* ---------- 锚点导航 ---------- */
.anchor-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 36px;
  padding: 16px;
  background-color: var(--bg-glass);
  -webkit-backdrop-filter: blur(18px) saturate(180%);
  backdrop-filter: blur(18px) saturate(180%);
  border: 1px solid var(--bg-glass-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
}

.anchor-nav a {
  font-size: 0.82rem;
  font-weight: 500;
  padding: 7px 15px;
  border-radius: var(--radius-pill);
  background-color: var(--bg-tertiary);
  color: var(--text-secondary);
  transition: background-color var(--transition), color var(--transition),
    transform var(--transition), box-shadow var(--transition);
}

.anchor-nav a:hover {
  background: var(--accent-gradient);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: var(--shadow-accent);
}

/* ---------- 联系信息 ---------- */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.contact-item {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  padding: 20px;
  background-color: var(--bg-glass);
  -webkit-backdrop-filter: blur(16px) saturate(160%);
  backdrop-filter: blur(16px) saturate(160%);
  border: 1px solid var(--bg-glass-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  transition: transform var(--transition), box-shadow var(--transition),
    border-color var(--transition);
}

.contact-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--accent);
}

.contact-item .icon {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: var(--accent-light);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
  flex-shrink: 0;
  transition: transform var(--transition), background-color var(--transition);
}

.contact-item:hover .icon {
  transform: scale(1.1) rotate(-8deg);
}

.contact-item h4 {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.contact-item p {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.65;
  word-break: break-word;
}

/* ---------- 页脚 ---------- */
.site-footer {
  background-color: var(--bg-glass);
  -webkit-backdrop-filter: blur(18px) saturate(180%);
  backdrop-filter: blur(18px) saturate(180%);
  border-top: 1px solid var(--bg-glass-border);
  padding: 52px 0 24px;
  margin-top: 48px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 32px;
  margin-bottom: 36px;
}

.footer-brand .brand-logo {
  margin-bottom: 4px;
}

.footer-brand p {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.8;
  margin-top: 12px;
  max-width: 340px;
}

.footer-col h4 {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 16px;
  position: relative;
  padding-bottom: 8px;
}

.footer-col h4::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 24px;
  height: 3px;
  border-radius: 2px;
  background: var(--accent-gradient);
}

.footer-col ul {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-col a {
  font-size: 0.82rem;
  color: var(--text-muted);
  transition: color var(--transition), padding-left var(--transition);
}

.footer-col a:hover {
  color: var(--accent);
  padding-left: 4px;
}

.footer-bottom {
  border-top: 1px solid var(--border);
  padding-top: 20px;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 12px;
  font-size: 0.78rem;
  color: var(--text-muted);
}

.footer-bottom a {
  color: var(--text-muted);
}

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

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}

/* ---------- 返回顶部 ---------- */
.back-to-top {
  position: fixed;
  bottom: 28px;
  right: 28px;
  width: 46px;
  height: 46px;
  border-radius: 50%;
  background: var(--accent-gradient);
  color: #fff;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-accent);
  opacity: 0;
  visibility: hidden;
  transform: translateY(14px) scale(0.9);
  transition: opacity var(--transition), visibility var(--transition),
    transform var(--transition), filter var(--transition);
  z-index: 90;
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0) scale(1);
}

.back-to-top:hover {
  filter: brightness(1.08);
  transform: translateY(-3px) scale(1.06);
}

.back-to-top:active {
  transform: translateY(0) scale(0.96);
}

/* ---------- 滚动动画 ---------- */
.fade-up {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s cubic-bezier(0.4, 0, 0.2, 1),
    transform 0.7s cubic-bezier(0.4, 0, 0.2, 1);
  will-change: opacity, transform;
}

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

/* ---------- 懒加载 ---------- */
img.lazy,
svg.lazy {
  opacity: 0;
  transition: opacity 0.5s ease;
}

img.lazy.loaded,
svg.lazy.loaded {
  opacity: 1;
}

/* ---------- 内联样式辅助修正（网站地图 / 声明） ---------- */
main section .card ul {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
  font-size: 0.85rem;
}

main section .card ul li a {
  color: var(--accent);
  font-weight: 500;
}

main section .card ul li a:hover {
  color: var(--accent-hover);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 响应式：平板 ---------- */
@media (max-width: 1024px) {
  .grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }

  .testimonial-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .contact-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 28px;
  }

  .hero-visual {
    width: 230px;
    height: 230px;
    right: 24px;
  }

  .hero-content h1 {
    font-size: 2rem;
  }

  .hero-slide {
    padding: 40px;
  }
}

/* ---------- 响应式：手机横屏 / 小平板 ---------- */
@media (max-width: 768px) {
  :root {
    --container-pad: 16px;
  }

  .nav-links {
    display: none;
  }

  .mobile-menu-btn {
    display: flex;
  }

  .search-box {
    display: none;
  }

  .hero {
    min-height: 380px;
    border-radius: var(--radius);
  }

  .hero-slide {
    padding: 32px 24px 52px;
  }

  .hero-content h1 {
    font-size: 1.55rem;
    margin-bottom: 14px;
  }

  .hero-content p {
    font-size: 0.92rem;
    margin-bottom: 22px;
  }

  .hero-visual {
    display: none;
  }

  .hero-cta {
    padding: 11px 24px;
    font-size: 0.9rem;
  }

  .grid-2,
  .grid-3,
  .grid-4,
  .article-grid,
  .testimonial-grid,
  .contact-grid {
    grid-template-columns: 1fr;
  }

  .stats-row {
    grid-template-columns: repeat(2, 1fr);
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 26px;
  }

  .howto-step {
    padding: 20px 18px 20px 62px;
  }

  .howto-step::before {
    left: 14px;
    top: 20px;
    width: 34px;
    height: 34px;
    font-size: 0.88rem;
  }

  .section-header h2 {
    font-size: 1.35rem;
  }

  .section-header p {
    font-size: 0.9rem;
  }

  .card {
    padding: 22px;
  }

  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
  }

  .back-to-top {
    bottom: 20px;
    right: 20px;
    width: 42px;
    height: 42px;
  }

  .anchor-nav {
    padding: 12px;
    gap: 6px;
  }

  .anchor-nav a {
    font-size: 0.78rem;
    padding: 6px 12px;
  }
}

/* ---------- 响应式：小屏手机 ---------- */
@media (max-width: 480px) {
  :root {
    --header-height: 60px;
    --container-pad: 14px;
  }

  .brand-logo {
    font-size: 1.05rem;
  }

  .brand-logo svg {
    width: 32px;
    height: 32px;
  }

  .theme-toggle,
  .mobile-menu-btn {
    width: 34px;
    height: 34px;
  }

  .hero {
    min-height: 340px;
    margin-bottom: 32px;
  }

  .hero-slide {
    padding: 26px 20px 48px;
  }

  .hero-content h1 {
    font-size: 1.32rem;
    line-height: 1.35;
  }

  .hero-content p {
    font-size: 0.86rem;
    line-height: 1.7;
  }

  .hero-dots {
    bottom: 16px;
  }

  .stats-row {
    grid-template-columns: 1fr;
  }

  .stat-number {
    font-size: 1.8rem;
  }

  .section-header h2 {
    font-size: 1.2rem;
  }

  .card h3 {
    font-size: 1.02rem;
  }

  .faq-question {
    padding: 16px 18px;
    font-size: 0.9rem;
  }

  .faq-answer {
    padding: 0 18px;
  }

  .faq-item.open .faq-answer {
    padding: 0 18px 16px;
  }

  .article-body {
    padding: 18px;
  }

  .testimonial-card {
    padding: 20px;
  }

  .footer-links {
    gap: 12px;
  }

  .back-to-top {
    width: 40px;
    height: 40px;
    bottom: 16px;
    right: 16px;
  }
}

/* ---------- 减弱动画偏好 ---------- */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

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

/* ---------- 打印样式 ---------- */
@media print {
  .site-header,
  .mobile-nav,
  .back-to-top,
  .hero-dots,
  .search-box,
  .theme-toggle,
  .mobile-menu-btn {
    display: none !important;
  }

  body {
    background: #fff;
    color: #000;
  }

  .card,
  .article-card,
  .faq-item,
  .testimonial-card,
  .contact-item {
    box-shadow: none;
    border: 1px solid #ccc;
    background: #fff;
  }

  .hero {
    background: #eee;
    color: #000;
  }

  a {
    color: #000;
    text-decoration: underline;
  }
}
```