```css
/* ===== 全局重置与变量 ===== */
:root {
  --primary: #e94560;
  --primary-dark: #c73652;
  --primary-light: #ff6b81;
  --bg-dark: #1a1a2e;
  --bg-darker: #0f0f1a;
  --bg-card: #16213e;
  --text-light: #f0f0f5;
  --text-muted: #9aa5b5;
  --glass-bg: rgba(255, 255, 255, 0.08);
  --glass-border: rgba(255, 255, 255, 0.15);
  --shadow: 0 8px 32px rgba(0, 0, 0, 0.25);
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.15);
  --radius: 16px;
  --radius-sm: 10px;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --font-main: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
}

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

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

body {
  font-family: var(--font-main);
  background: var(--bg-dark);
  color: var(--text-light);
  line-height: 1.7;
  overflow-x: hidden;
  transition: background 0.4s ease, color 0.4s ease;
}

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

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

ul, ol {
  list-style: none;
}

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

input {
  font-family: inherit;
}

/* ===== 暗色模式（默认）与亮色模式 ===== */
body {
  --bg-body: var(--bg-dark);
  --bg-section: rgba(22, 33, 62, 0.6);
  --text-primary: var(--text-light);
  --text-secondary: var(--text-muted);
  --card-bg: rgba(255, 255, 255, 0.05);
  --card-border: rgba(255, 255, 255, 0.08);
  --input-bg: rgba(255, 255, 255, 0.1);
}

body.light-mode {
  --bg-body: #f5f6fa;
  --bg-section: #ffffff;
  --text-primary: #1a1a2e;
  --text-secondary: #4a5568;
  --card-bg: #ffffff;
  --card-border: #e2e8f0;
  --input-bg: #edf2f7;
  color: var(--text-primary);
  background: var(--bg-body);
}

body.light-mode .site-header,
body.light-mode footer {
  background: rgba(255, 255, 255, 0.9);
  box-shadow: 0 2px 20px rgba(0, 0, 0, 0.08);
}

body.light-mode .site-header nav a,
body.light-mode footer a,
body.light-mode footer h4,
body.light-mode footer p {
  color: #1a1a2e;
}

body.light-mode .glass-card {
  background: rgba(255, 255, 255, 0.85);
  border: 1px solid rgba(0, 0, 0, 0.05);
}

body.light-mode #home {
  background: linear-gradient(145deg, #ffffff, #f0f4ff);
  color: #1a1a2e;
}

body.light-mode #home p {
  color: #4a5568;
}

body.light-mode #home svg rect {
  fill: #e2e8f0;
}

body.light-mode .search-box input {
  background: #edf2f7;
  border: 1px solid #cbd5e0;
  color: #1a1a2e;
}

body.light-mode .search-box button {
  background: var(--primary);
}

body.light-mode #back2top {
  background: var(--primary);
}

/* ===== 吸顶导航 ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(26, 26, 46, 0.85);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  padding: 0.6rem 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.8rem;
  box-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  transition: var(--transition);
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.logo svg {
  border-radius: 10px;
  box-shadow: 0 4px 12px rgba(233, 69, 96, 0.3);
  transition: var(--transition);
}

.logo svg:hover {
  transform: scale(1.05) rotate(-3deg);
}

.logo span {
  font-size: 1.4rem;
  font-weight: 800;
  letter-spacing: 0.5px;
  background: linear-gradient(135deg, #fff, #ffb3c1);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  transition: var(--transition);
}

body.light-mode .logo span {
  background: linear-gradient(135deg, #e94560, #ff6b81);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.main-nav ul {
  display: flex;
  gap: 0.2rem;
  flex-wrap: wrap;
}

.main-nav a {
  padding: 0.5rem 0.9rem;
  border-radius: 50px;
  font-size: 0.9rem;
  font-weight: 500;
  color: #e0e0e0;
  position: relative;
  transition: var(--transition);
}

.main-nav a::after {
  content: '';
  position: absolute;
  bottom: 2px;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 2px;
  background: var(--primary);
  border-radius: 2px;
  transition: var(--transition);
}

.main-nav a:hover {
  color: #fff;
}

.main-nav a:hover::after {
  width: 60%;
}

body.light-mode .main-nav a {
  color: #1a1a2e;
}

body.light-mode .main-nav a:hover {
  color: var(--primary);
}

.search-box {
  display: flex;
  gap: 0.4rem;
  align-items: center;
}

.search-box input {
  padding: 0.5rem 1rem;
  border-radius: 50px;
  border: none;
  background: rgba(255, 255, 255, 0.1);
  color: #fff;
  width: 180px;
  transition: var(--transition);
  backdrop-filter: blur(10px);
}

.search-box input::placeholder {
  color: rgba(255, 255, 255, 0.5);
}

.search-box input:focus {
  outline: 2px solid var(--primary);
  width: 220px;
  background: rgba(255, 255, 255, 0.15);
}

body.light-mode .search-box input::placeholder {
  color: #a0aec0;
}

.search-box button {
  background: var(--primary);
  border-radius: 50px;
  padding: 0.5rem 0.9rem;
  color: #fff;
  font-size: 0.9rem;
  transition: var(--transition);
  box-shadow: 0 2px 10px rgba(233, 69, 96, 0.3);
}

.search-box button:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 4px 20px rgba(233, 69, 96, 0.4);
}

/* ===== 主内容容器 ===== */
#main-content {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* ===== 首屏 Hero ===== */
#home {
  background: linear-gradient(145deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%);
  color: #fff;
  padding: 3rem 2rem;
  border-radius: 0 0 40px 40px;
  margin-top: 0.5rem;
  position: relative;
  overflow: hidden;
  animation: fadeInUp 0.8s ease-out;
}

#home::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(233, 69, 96, 0.2), transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

#home h1 {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 900;
  line-height: 1.2;
  margin-bottom: 0.8rem;
  background: linear-gradient(135deg, #fff 0%, #ffb3c1 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: fadeInUp 0.8s ease-out 0.1s both;
}

#home p {
  font-size: clamp(1rem, 2vw, 1.3rem);
  max-width: 800px;
  color: rgba(255, 255, 255, 0.85);
  margin-bottom: 0.8rem;
  animation: fadeInUp 0.8s ease-out 0.2s both;
}

#home p:last-of-type {
  font-size: 0.95rem;
  color: rgba(255, 255, 255, 0.6);
  animation: fadeInUp 0.8s ease-out 0.3s both;
}

#home svg {
  margin-top: 1.5rem;
  border-radius: 16px;
  box-shadow: var(--shadow);
  animation: fadeInUp 0.8s ease-out 0.4s both;
}

/* ===== 品牌介绍卡片 ===== */
section > article {
  background: var(--glass-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--glass-border);
  padding: 1.8rem;
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

section > article::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), transparent);
  opacity: 0;
  transition: var(--transition);
}

section > article:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow);
  border-color: rgba(233, 69, 96, 0.3);
}

section > article:hover::before {
  opacity: 1;
}

section > article h2 {
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 0.8rem;
  color: var(--text-light);
  position: relative;
  padding-bottom: 0.5rem;
}

section > article h2::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 40px;
  height: 2px;
  background: var(--primary);
  border-radius: 2px;
}

section > article p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.7;
}

body.light-mode section > article h2 {
  color: #1a1a2e;
}

/* ===== 产品优势区 ===== */
section h2 {
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 800;
  border-left: 5px solid var(--primary);
  padding-left: 1rem;
  margin-bottom: 1.5rem;
  color: var(--text-light);
  transition: var(--transition);
}

section h3 {
  font-size: 1.2rem;
  font-weight: 700;
  margin: 1.2rem 0 0.5rem;
  color: var(--text-light);
  position: relative;
  display: inline-block;
}

section h3::before {
  content: '▸';
  color: var(--primary);
  margin-right: 0.4rem;
  font-size: 1.1em;
}

body.light-mode section h2,
body.light-mode section h3 {
  color: #1a1a2e;
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.8rem;
}

.grid-2 > div {
  background: var(--glass-bg);
  backdrop-filter: blur(8px);
  padding: 1.8rem;
  border-radius: var(--radius);
  border: 1px solid var(--glass-border);
  transition: var(--transition);
}

.grid-2 > div:hover {
  transform: scale(1.02);
  border-color: rgba(233, 69, 96, 0.4);
}

.grid-2 p {
  color: var(--text-secondary);
  line-height: 1.8;
}

/* ===== 解决方案区 ===== */
#solution, section[style*="background:#f1f3f5"] {
  background: linear-gradient(135deg, rgba(233, 69, 96, 0.08), rgba(22, 33, 62, 0.8));
  backdrop-filter: blur(12px);
  border: 1px solid var(--glass-border);
  padding: 2rem;
  border-radius: 24px;
  margin: 2rem 0;
  transition: var(--transition);
}

#solution:hover, section[style*="background:#f1f3f5"]:hover {
  border-color: rgba(233, 69, 96, 0.4);
}

#solution p, section[style*="background:#f1f3f5"] p {
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 0.8rem;
}

#solution ul, section[style*="background:#f1f3f5"] ul {
  list-style: disc;
  padding-left: 1.5rem;
  color: var(--text-secondary);
  line-height: 1.8;
}

#solution blockquote, section[style*="background:#f1f3f5"] blockquote {
  border-left: 4px solid var(--primary);
  padding: 0.8rem 1.2rem;
  background: rgba(233, 69, 96, 0.1);
  border-radius: 0 8px 8px 0;
  font-style: italic;
  margin-top: 1rem;
  color: var(--text-light);
}

body.light-mode #solution blockquote {
  color: #1a1a2e;
}

/* ===== 新闻卡片 ===== */
#news article {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  padding: 1.5rem;
  border-radius: var(--radius);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

#news article::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), transparent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s ease;
}

#news article:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow);
  border-color: rgba(233, 69, 96, 0.3);
}

#news article:hover::after {
  transform: scaleX(1);
}

#news h3 {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  color: var(--text-light);
  transition: var(--transition);
}

#news h3:hover {
  color: var(--primary);
}

#news time {
  font-size: 0.8rem;
  color: var(--text-secondary);
  display: block;
  margin-bottom: 0.6rem;
}

#news p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

body.light-mode #news h3 {
  color: #1a1a2e;
}

/* ===== FAQ ===== */
#faq details {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-sm);
  padding: 1rem 1.2rem;
  margin-bottom: 0.8rem;
  transition: var(--transition);
  backdrop-filter: blur(8px);
}

#faq details:hover {
  border-color: rgba(233, 69, 96, 0.3);
  transform: translateX(4px);
}

#faq summary {
  font-weight: 600;
  cursor: pointer;
  color: var(--text-light);
  transition: var(--transition);
  position: relative;
  padding-right: 1.5rem;
}

#faq summary::after {
  content: '+';
  position: absolute;
  right: 0;
  top: 50%;
  transform: translateY(-50%);
  font-size: 1.4rem;
  color: var(--primary);
  transition: var(--transition);
}

#faq details[open] summary::after {
  content: '−';
  transform: translateY(-50%) rotate(180deg);
}

#faq details[open] summary {
  color: var(--primary);
}

#faq p {
  color: var(--text-secondary);
  padding-top: 0.8rem;
  line-height: 1.7;
}

body.light-mode #faq summary {
  color: #1a1a2e;
}

/* ===== HowTo ===== */
#howto {
  background: linear-gradient(135deg, rgba(233, 69, 96, 0.05), rgba(22, 33, 62, 0.6));
  backdrop-filter: blur(12px);
  border: 1px solid var(--glass-border);
  padding: 2rem;
  border-radius: 24px;
}

#howto p {
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 0.5rem;
}

#howto ol {
  list-style: decimal;
  padding-left: 1.5rem;
  color: var(--text-secondary);
  line-height: 2;
}

#howto ol li::marker {
  color: var(--primary);
  font-weight: 700;
}

#howto strong {
  color: var(--text-light);
}

body.light-mode #howto strong {
  color: #1a1a2e;
}

/* ===== 联系区 ===== */
#contact {
  background: var(--glass-bg);
  backdrop-filter: blur(12px);
  border: 1px solid var(--glass-border);
  padding: 2rem;
  border-radius: 24px;
  transition: var(--transition);
}

#contact p {
  color: var(--text-secondary);
  line-height: 2;
  font-size: 0.95rem;
}

#contact p::before {
  content: '📍 ';
  color: var(--primary);
}

#contact p:nth-of-type(2)::before {
  content: '📞 ';
}

#contact p:nth-of-type(3)::before {
  content: '✉️ ';
}

#contact p:nth-of-type(4)::before {
  content: '🕐 ';
}

#contact p:nth-of-type(5)::before {
  content: '📜 ';
}

/* ===== Footer ===== */
footer {
  background: linear-gradient(180deg, var(--bg-dark), #0f0f1a);
  color: var(--text-secondary);
  padding: 2.5rem 2rem 1rem;
  margin-top: 3rem;
  border-radius: 30px 30px 0 0;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
}

footer h4 {
  color: var(--text-light);
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 0.8rem;
  position: relative;
  padding-bottom: 0.5rem;
}

footer h4::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 30px;
  height: 2px;
  background: var(--primary);
  border-radius: 2px;
}

footer ul li {
  margin-bottom: 0.4rem;
}

footer a {
  color: var(--text-secondary);
  transition: var(--transition);
}

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

footer p {
  font-size: 0.85rem;
  line-height: 1.6;
}

footer > p:last-child {
  text-align: center;
  margin-top: 2rem;
  padding-top: 1.5rem;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  font-size: 0.8rem;
}

body.light-mode footer {
  background: #ffffff;
  border-top: 1px solid #e2e8f0;
}

/* ===== 返回顶部按钮 ===== */
#back2top {
  position: fixed;
  bottom: 2rem;
  right: 1.5rem;
  background: var(--primary);
  color: #fff;
  border: none;
  border-radius: 50%;
  width: 50px;
  height: 50px;
  font-size: 1.5rem;
  cursor: pointer;
  box-shadow: 0 4px 20px rgba(233, 69, 96, 0.4);
  transition: var(--transition);
  z-index: 999;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
}

#back2top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

#back2top:hover {
  background: var(--primary-dark);
  transform: translateY(-4px);
  box-shadow: 0 8px 30px rgba(233, 69, 96, 0.5);
}

/* ===== 滚动动画 ===== */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeInLeft {
  from {
    opacity: 0;
    transform: translateX(-30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

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

@keyframes zoomIn {
  from {
    opacity: 0;
    transform: scale(0.9);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

.animate-on-scroll {
  opacity: 0;
  animation: fadeInUp 0.8s ease-out forwards;
}

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

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

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

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

/* ===== 响应式 ===== */
@media (max-width: 768px) {
  .site-header {
    padding: 0.6rem 1rem;
    flex-direction: column;
    align-items: stretch;
    gap: 0.6rem;
  }

  .logo {
    justify-content: center;
  }

  .main-nav ul {
    justify-content: center;
    gap: 0.1rem;
  }

  .main-nav a {
    padding: 0.4rem 0.7rem;
    font-size: 0.8rem;
  }

  .search-box {
    justify-content: center;
  }

  .search-box input {
    width: 100%;
    max-width: 300px;
  }

  .search-box input:focus {
    width: 100%;
    max-width: 300px;
  }

  #home {
    padding: 2rem 1rem;
    border-radius: 0 0 24px 24px;
  }

  #home h1 {
    font-size: 1.8rem;
  }

  #main-content {
    padding: 0 0.8rem;
  }

  section > article {
    padding: 1.2rem;
  }

  .grid-2 {
    grid-template-columns: 1fr;
    gap: 1rem;
  }

  #solution, #howto, #contact {
    padding: 1.2rem;
  }

  #back2top {
    width: 44px;
    height: 44px;
    font-size: 1.2rem;
    bottom: 1.2rem;
    right: 1rem;
  }

  footer {
    padding: 2rem 1rem 1rem;
  }
}

@media (max-width: 480px) {
  .logo span {
    font-size: 1.2rem;
  }

  .main-nav ul {
    gap: 0.05rem;
  }

  .main-nav a {
    padding: 0.3rem 0.5rem;
    font-size: 0.75rem;
  }

  #home h1 {
    font-size: 1.5rem;
  }

  #home p {
    font-size: 0.95rem;
  }

  section h2 {
    font-size: 1.3rem;
  }
}

/* ===== 玻璃拟态工具类 ===== */
.glass-card {
  background: var(--glass-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.glass-hover {
  transition: var(--transition);
}

.glass-hover:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow);
  border-color: rgba(233, 69, 96, 0.3);
}

/* ===== 渐变文字 ===== */
.gradient-text {
  background: linear-gradient(135deg, #ff6b81, #ffb3c1, #fff);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* ===== 浮动动画 ===== */
@keyframes float {
  0%, 100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-10px);
  }
}

.float-animation {
  animation: float 3s ease-in-out infinite;
}

/* ===== 加载动画 ===== */
@keyframes pulse {
  0%, 100% {
    opacity: 1;
  }
  50% {
    opacity: 0.5;
  }
}

.loading {
  animation: pulse 1.5s ease-in-out infinite;
}

/* ===== 安全区域适配 ===== */
@supports (padding: max(0px)) {
  .site-header {
    padding-left: max(1rem, env(safe-area-inset-left));
    padding-right: max(1rem, env(safe-area-inset-right));
  }

  #main-content {
    padding-left: max(1rem, env(safe-area-inset-left));
    padding-right: max(1rem, env(safe-area-inset-right));
  }

  #back2top {
    bottom: max(1rem, env(safe-area-inset-bottom));
    right: max(1rem, env(safe-area-inset-right));
  }
}
```