:root {
  --pink: #f7a8b8;
  --pink-light: #ffe3ea;
  --pink-deep: #e8899d;
  --blue: #a8d8ea;
  --blue-light: #e8f4f8;
  --blue-deep: #7bbfd6;
  --cream: #fff5e6;
  --text: #3d2c33;
  --text-secondary: #7a5a65;
  --text-light: #a88b95;
  --bg: #fefafc;
  --bg-alt: #fff7fa;
  --card-bg: rgba(255, 255, 255, 0.72);
  --card-border: rgba(247, 168, 184, 0.18);
  --glass-bg: rgba(255, 255, 255, 0.55);
  --glass-border: rgba(255, 255, 255, 0.65);
  --shadow-sm: 0 2px 8px rgba(247, 168, 184, 0.1);
  --shadow-md: 0 6px 24px rgba(247, 168, 184, 0.14);
  --shadow-lg: 0 12px 40px rgba(247, 168, 184, 0.18);
  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-xl: 32px;
  --gradient-hero: linear-gradient(135deg, #ffe3ea 0%, #e8f4f8 40%, #fff5e6 100%);
  --gradient-btn: linear-gradient(135deg, #f7a8b8, #e8899d);
  --gradient-accent: linear-gradient(135deg, #a8d8ea, #7bbfd6);
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --header-h: 64px;
}

[data-theme="dark"] {
  --pink: #d4849a;
  --pink-light: #3a2830;
  --pink-deep: #e8a0b4;
  --blue: #7ba8c0;
  --blue-light: #1e2e38;
  --blue-deep: #9cc4d8;
  --cream: #2e2820;
  --text: #f0e6ea;
  --text-secondary: #c0a8b2;
  --text-light: #8a7078;
  --bg: #1a1218;
  --bg-alt: #221820;
  --card-bg: rgba(40, 28, 36, 0.72);
  --card-border: rgba(212, 132, 154, 0.15);
  --glass-bg: rgba(40, 28, 36, 0.55);
  --glass-border: rgba(212, 132, 154, 0.2);
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.25);
  --shadow-md: 0 6px 24px rgba(0, 0, 0, 0.35);
  --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.45);
  --gradient-hero: linear-gradient(135deg, #2a1e26 0%, #1e2e38 40%, #2e2820 100%);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 16px);
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.8;
  color: var(--text);
  background: var(--bg);
  overflow-x: hidden;
  transition: background var(--transition), color var(--transition);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

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

ul, ol {
  list-style: none;
}

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

input, textarea {
  font-family: inherit;
  font-size: inherit;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* ===== Header ===== */
#site-header {
  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);
  transition: background var(--transition), box-shadow var(--transition);
}

#site-header.scrolled {
  box-shadow: var(--shadow-md);
}

.header-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
  height: var(--header-h);
  display: flex;
  align-items: center;
  gap: 20px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
  text-decoration: none;
}

.logo svg {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  transition: transform var(--transition);
}

.logo:hover svg {
  transform: rotate(-6deg) scale(1.08);
}

.logo-text {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text);
  letter-spacing: 0.5px;
  white-space: nowrap;
}

#main-nav {
  flex: 1;
  min-width: 0;
}

#main-nav ul {
  display: flex;
  gap: 4px;
  flex-wrap: nowrap;
  overflow-x: auto;
  scrollbar-width: none;
  -ms-overflow-style: none;
}

#main-nav ul::-webkit-scrollbar {
  display: none;
}

#main-nav a {
  display: block;
  padding: 6px 12px;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
  white-space: nowrap;
  transition: all var(--transition);
  position: relative;
}

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

#main-nav a:hover {
  color: var(--pink-deep);
  background: var(--pink-light);
}

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

.site-search {
  display: flex;
  align-items: center;
  background: var(--glass-bg);
  border: 1px solid var(--card-border);
  border-radius: 50px;
  overflow: hidden;
  transition: all var(--transition);
  flex-shrink: 0;
}

.site-search:focus-within {
  border-color: var(--pink);
  box-shadow: 0 0 0 3px rgba(247, 168, 184, 0.2);
}

.site-search input {
  width: 180px;
  padding: 8px 16px;
  border: none;
  background: transparent;
  color: var(--text);
  outline: none;
  font-size: 0.88rem;
}

.site-search input::placeholder {
  color: var(--text-light);
}

.site-search button {
  padding: 8px 18px;
  background: var(--gradient-btn);
  color: #fff;
  font-size: 0.85rem;
  font-weight: 600;
  border-radius: 50px;
  transition: all var(--transition);
  white-space: nowrap;
}

.site-search button:hover {
  filter: brightness(1.08);
  transform: scale(1.03);
}

#theme-toggle {
  padding: 8px 16px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-secondary);
  background: var(--glass-bg);
  border: 1px solid var(--card-border);
  border-radius: 50px;
  transition: all var(--transition);
  white-space: nowrap;
  flex-shrink: 0;
}

#theme-toggle:hover {
  background: var(--pink-light);
  color: var(--pink-deep);
  border-color: var(--pink);
  transform: translateY(-1px);
}

#menu-toggle {
  display: none;
  padding: 8px 16px;
  font-size: 0.85rem;
  font-weight: 600;
  color: #fff;
  background: var(--gradient-btn);
  border-radius: 50px;
  transition: all var(--transition);
  flex-shrink: 0;
}

#menu-toggle:hover {
  filter: brightness(1.08);
  transform: scale(1.03);
}

/* ===== Main ===== */
main {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ===== Breadcrumb ===== */
.breadcrumb {
  padding: 20px 0 8px;
}

.breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  font-size: 0.85rem;
  color: var(--text-light);
}

.breadcrumb li + li::before {
  content: '/';
  margin-right: 6px;
  color: var(--text-light);
  opacity: 0.5;
}

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

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

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

/* ===== Hero ===== */
#hero {
  position: relative;
  margin: 16px 0 48px;
  padding: 56px 40px 48px;
  background: var(--gradient-hero);
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

#hero::before {
  content: '';
  position: absolute;
  top: -60px;
  right: -60px;
  width: 280px;
  height: 280px;
  background: radial-gradient(circle, rgba(247, 168, 184, 0.35), transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

#hero::after {
  content: '';
  position: absolute;
  bottom: -80px;
  left: -40px;
  width: 320px;
  height: 320px;
  background: radial-gradient(circle, rgba(168, 216, 234, 0.3), transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

#hero h1 {
  position: relative;
  z-index: 1;
  font-size: clamp(1.6rem, 4vw, 2.6rem);
  font-weight: 800;
  line-height: 1.35;
  color: var(--text);
  margin-bottom: 20px;
  letter-spacing: -0.5px;
}

.hero-lead {
  position: relative;
  z-index: 1;
  max-width: 820px;
  font-size: 1rem;
  line-height: 1.9;
  color: var(--text-secondary);
  margin-bottom: 36px;
}

.banner-slides {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-bottom: 40px;
}

.slide {
  background: var(--card-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: transform var(--transition), box-shadow var(--transition);
  box-shadow: var(--shadow-sm);
}

.slide:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}

.slide figure {
  margin: 0;
}

.slide svg {
  width: 100%;
  height: auto;
  display: block;
}

.slide figcaption {
  padding: 12px 16px;
  font-size: 0.82rem;
  color: var(--text-secondary);
  text-align: center;
  border-top: 1px solid var(--card-border);
}

.banner-stats {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.banner-stats li {
  text-align: center;
  padding: 20px 12px;
  background: var(--glass-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  transition: transform var(--transition), box-shadow var(--transition);
}

.banner-stats li:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.banner-stats strong {
  display: block;
  font-size: clamp(1.3rem, 3vw, 1.8rem);
  font-weight: 800;
  color: var(--pink-deep);
  line-height: 1.2;
  margin-bottom: 4px;
}

.banner-stats span {
  font-size: 0.82rem;
  color: var(--text-secondary);
}

/* ===== Sections ===== */
main > section:not(#hero) {
  margin-bottom: 56px;
  animation: fadeInUp 0.6s ease-out both;
}

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

main > section h2 {
  font-size: clamp(1.3rem, 3vw, 1.8rem);
  font-weight: 800;
  color: var(--text);
  margin-bottom: 24px;
  padding-left: 18px;
  position: relative;
  letter-spacing: -0.3px;
}

main > section h2::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 6px;
  height: 1.1em;
  background: var(--gradient-btn);
  border-radius: 3px;
}

main > section h3 {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text);
  margin: 28px 0 12px;
  padding-left: 14px;
  position: relative;
}

main > section h3::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 4px;
  height: 0.9em;
  background: var(--gradient-accent);
  border-radius: 2px;
}

main > section p {
  color: var(--text-secondary);
  margin-bottom: 16px;
  line-height: 1.9;
}

main > section > ul,
main > section > ol {
  margin: 16px 0 24px;
  padding-left: 0;
}

main > section > ul li,
main > section > ol li {
  position: relative;
  padding: 8px 0 8px 24px;
  color: var(--text-secondary);
  line-height: 1.8;
}

main > section > ul li::before {
  content: '';
  position: absolute;
  left: 4px;
  top: 18px;
  width: 8px;
  height: 8px;
  background: var(--gradient-btn);
  border-radius: 50%;
  box-shadow: 0 0 0 3px rgba(247, 168, 184, 0.15);
}

main > section > ol {
  counter-reset: step;
}

main > section > ol li {
  counter-increment: step;
  padding-left: 36px;
}

main > section > ol li::before {
  content: counter(step);
  position: absolute;
  left: 0;
  top: 10px;
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  font-weight: 700;
  color: #fff;
  background: var(--gradient-btn);
  border-radius: 50%;
}

main > section strong {
  color: var(--text);
  font-weight: 700;
}

/* ===== Brand Section ===== */
#brand {
  background: var(--card-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-xl);
  padding: 40px 36px;
  box-shadow: var(--shadow-md);
}

#brand ul {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 12px;
  margin: 20px 0;
}

#brand ul li {
  padding: 14px 18px 14px 42px;
  background: var(--glass-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-md);
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}

#brand ul li::before {
  left: 16px;
  top: 22px;
}

#brand ul li:hover {
  transform: translateY(-3px) translateX(4px);
  box-shadow: var(--shadow-sm);
  border-color: var(--pink);
}

/* ===== Products Section ===== */
#products {
  background: var(--card-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-xl);
  padding: 40px 36px;
  box-shadow: var(--shadow-md);
}

#products ul {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 14px;
  margin: 20px 0;
}

#products ul li {
  padding: 16px 20px 16px 44px;
  background: linear-gradient(135deg, var(--pink-light), var(--blue-light));
  border-radius: var(--radius-md);
  transition: transform var(--transition), box-shadow var(--transition);
  border: 1px solid var(--card-border);
}

#products ul li::before {
  left: 18px;
  top: 24px;
}

#products ul li:hover {
  transform: translateY(-4px) scale(1.02);
  box-shadow: var(--shadow-md);
}

/* ===== Solutions Section ===== */
#solutions {
  background: var(--card-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-xl);
  padding: 40px 36px;
  box-shadow: var(--shadow-md);
}

/* ===== Applications Section ===== */
#applications {
  background: var(--card-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-xl);
  padding: 40px 36px;
  box-shadow: var(--shadow-md);
}

/* ===== Cases Section ===== */
#cases {
  background: var(--card-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-xl);
  padding: 40px 36px;
  box-shadow: var(--shadow-md);
}

#cases blockquote {
  margin: 16px 0;
  padding: 20px 24px;
  background: linear-gradient(135deg, var(--pink-light), var(--blue-light));
  border-left: 4px solid var(--pink);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  transition: transform var(--transition), box-shadow var(--transition);
}

#cases blockquote:hover {
  transform: translateX(6px);
  box-shadow: var(--shadow-sm);
}

#cases blockquote p {
  margin: 0;
  font-style: italic;
  color: var(--text-secondary);
  font-size: 0.95rem;
}

/* ===== News Section ===== */
#news {
  background: var(--card-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-xl);
  padding: 40px 36px;
  box-shadow: var(--shadow-md);
}

.news-list li {
  padding: 14px 18px 14px 42px;
  margin-bottom: 10px;
  background: var(--glass-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-md);
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
  color: var(--text-secondary);
  font-size: 0.95rem;
}

.news-list li::before {
  left: 16px;
  top: 22px;
}

.news-list li:hover {
  transform: translateX(6px);
  box-shadow: var(--shadow-sm);
  border-color: var(--pink);
}

.news-list time {
  display: inline-block;
  font-weight: 700;
  color: var(--pink-deep);
  margin-right: 8px;
  font-size: 0.85rem;
}

/* ===== Articles Section ===== */
#articles {
  background: var(--card-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-xl);
  padding: 40px 36px;
  box-shadow: var(--shadow-md);
}

.post {
  padding: 24px;
  margin-bottom: 20px;
  background: var(--glass-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}

.post:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--pink);
}

.post h3 {
  margin: 0 0 10px;
  padding-left: 0;
  font-size: 1.08rem;
}

.post h3::before {
  display: none;
}

.post h3 a {
  color: var(--text);
  transition: color var(--transition);
}

.post h3 a:hover {
  color: var(--pink-deep);
}

.post .meta {
  font-size: 0.82rem;
  color: var(--text-light);
  margin-bottom: 12px;
}

.post p {
  font-size: 0.94rem;
  margin-bottom: 12px;
}

.post > p:last-child a {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--pink-deep);
  transition: gap var(--transition), color var(--transition);
}

.post > p:last-child a::after {
  content: '→';
  transition: transform var(--transition);
}

.post > p:last-child a:hover {
  gap: 8px;
}

.post > p:last-child a:hover::after {
  transform: translateX(4px);
}

/* ===== HowTo Section ===== */
#howto {
  background: var(--card-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-xl);
  padding: 40px 36px;
  box-shadow: var(--shadow-md);
}

#howto ol {
  counter-reset: howto;
  margin: 20px 0;
}

#howto ol li {
  counter-increment: howto;
  padding: 16px 20px 16px 52px;
  margin-bottom: 12px;
  background: var(--glass-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-md);
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}

#howto ol li::before {
  content: counter(howto);
  position: absolute;
  left: 16px;
  top: 18px;
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
  font-weight: 700;
  color: #fff;
  background: var(--gradient-btn);
  border-radius: 50%;
}

#howto ol li:hover {
  transform: translateX(6px);
  box-shadow: var(--shadow-sm);
  border-color: var(--pink);
}

#howto ul li {
  padding: 10px 16px 10px 40px;
  margin-bottom: 8px;
  background: var(--glass-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-sm);
  transition: transform var(--transition), border-color var(--transition);
}

#howto ul li::before {
  left: 16px;
  top: 18px;
}

#howto ul li:hover {
  transform: translateX(4px);
  border-color: var(--pink);
}

/* ===== FAQ Section ===== */
#faq {
  background: var(--card-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-xl);
  padding: 40px 36px;
  box-shadow: var(--shadow-md);
}

.faq-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.faq-list dt {
  margin: 0;
}

.faq-list dt button {
  width: 100%;
  text-align: left;
  padding: 16px 48px 16px 20px;
  font-size: 0.98rem;
  font-weight: 600;
  color: var(--text);
  background: var(--glass-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-md);
  position: relative;
  transition: all var(--transition);
  line-height: 1.6;
}

.faq-list dt button::after {
  content: '+';
  position: absolute;
  right: 20px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 1.4rem;
  font-weight: 300;
  color: var(--pink-deep);
  transition: transform var(--transition), color var(--transition);
  line-height: 1;
}

.faq-list dt button[aria-expanded="true"] {
  background: var(--pink-light);
  border-color: var(--pink);
  border-radius: var(--radius-md) var(--radius-md) 0 0;
}

.faq-list dt button[aria-expanded="true"]::after {
  content: '−';
  transform: translateY(-50%) rotate(180deg);
}

.faq-list dt button:hover {
  border-color: var(--pink);
  box-shadow: var(--shadow-sm);
}

.faq-list dd {
  margin: 0;
  padding: 0 20px;
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, padding 0.3s ease, opacity 0.3s ease;
  opacity: 0;
  background: var(--glass-bg);
  border: 1px solid var(--card-border);
  border-top: none;
  border-radius: 0 0 var(--radius-md) var(--radius-md);
}

.faq-list dd.open {
  max-height: 500px;
  padding: 16px 20px;
  opacity: 1;
}

.faq-list dd p {
  margin: 0;
  font-size: 0.92rem;
  color: var(--text-secondary);
  line-height: 1.85;
}

/* ===== Contact Section ===== */
#contact {
  background: var(--card-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-xl);
  padding: 40px 36px;
  box-shadow: var(--shadow-md);
}

#contact address {
  font-style: normal;
  margin: 20px 0;
}

#contact address ul {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 12px;
}

#contact address li {
  padding: 14px 18px 14px 42px;
  background: var(--glass-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-md);
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
  font-size: 0.94rem;
}

#contact address li::before {
  left: 16px;
  top: 22px;
}

#contact address li:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-sm);
  border-color: var(--pink);
}

#contact address a {
  font-weight: 600;
}

/* ===== Sitemap & Links ===== */
#sitemap,
#links {
  background: var(--card-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-xl);
  padding: 40px 36px;
  box-shadow: var(--shadow-md);
}

.sitemap-list,
.friend-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 16px;
}

.sitemap-list li,
.friend-links li {
  padding: 0;
}

.sitemap-list li::before,
.friend-links li::before {
  display: none;
}

.sitemap-list a,
.friend-links a {
  display: inline-block;
  padding: 8px 18px;
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--text-secondary);
  background: var(--glass-bg);
  border: 1px solid var(--card-border);
  border-radius: 50px;
  transition: all var(--transition);
}

.sitemap-list a:hover,
.friend-links a:hover {
  color: #fff;
  background: var(--gradient-btn);
  border-color: transparent;
  transform: translateY(-2px);
  box-shadow: var(--shadow-sm);
}

/* ===== Footer ===== */
#site-footer {
  margin-top: 64px;
  padding: 48px 24px 32px;
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-top: 1px solid var(--glass-border);
}

#site-footer > section {
  max-width: 1280px;
  margin: 0 auto 28px;
}

#site-footer h2 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 14px;
  padding-left: 14px;
  position: relative;
}

#site-footer h2::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 4px;
  height: 0.9em;
  background: var(--gradient-btn);
  border-radius: 2px;
}

#site-footer p {
  color: var(--text-secondary);
  font-size: 0.92rem;
  line-height: 1.85;
  max-width: 720px;
}

#site-footer ul {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

#site-footer ul li {
  padding: 0;
}

#site-footer ul li::before {
  display: none;
}

#site-footer ul a {
  display: inline-block;
  padding: 6px 16px;
  font-size: 0.85rem;
  color: var(--text-secondary);
  background: var(--glass-bg);
  border: 1px solid var(--card-border);
  border-radius: 50px;
  transition: all var(--transition);
}

#site-footer ul a:hover {
  color: #fff;
  background: var(--gradient-btn);
  border-color: transparent;
  transform: translateY(-2px);
}

#site-footer ul li:not(:has(a)) {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

#site-footer ul li:not(:has(a)) {
  padding: 6px 16px;
  background: var(--glass-bg);
  border: 1px solid var(--card-border);
  border-radius: 50px;
}

.copyright {
  max-width: 1280px;
  margin: 0 auto;
  padding-top: 24px;
  border-top: 1px solid var(--card-border);
  text-align: center;
  font-size: 0.82rem;
  color: var(--text-light) !important;
}

/* ===== Back to Top ===== */
#back-to-top {
  position: fixed;
  right: 24px;
  bottom: 24px;
  z-index: 999;
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.72rem;
  font-weight: 700;
  color: #fff;
  background: var(--gradient-btn);
  border-radius: 50%;
  box-shadow: var(--shadow-md);
  opacity: 0;
  visibility: hidden;
  transform: translateY(16px) scale(0.9);
  transition: all var(--transition);
  line-height: 1.2;
  text-align: center;
  padding: 4px;
}

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

#back-to-top:hover {
  transform: translateY(-4px) scale(1.08);
  box-shadow: var(--shadow-lg);
  filter: brightness(1.08);
}

/* ===== Reveal Animation ===== */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s ease-out, transform 0.7s ease-out;
}

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

/* ===== Scrollbar ===== */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

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

::-webkit-scrollbar-thumb {
  background: var(--pink);
  border-radius: 4px;
}

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

/* ===== Selection ===== */
::selection {
  background: var(--pink);
  color: #fff;
}

/* ===== Focus Visible ===== */
:focus-visible {
  outline: 2px solid var(--pink-deep);
  outline-offset: 2px;
  border-radius: 4px;
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .header-inner {
    padding: 0 16px;
    gap: 12px;
  }

  #main-nav {
    display: none;
    position: absolute;
    top: var(--header-h);
    left: 0;
    right: 0;
    background: var(--glass-bg);
    backdrop-filter: blur(24px) saturate(180%);
    -webkit-backdrop-filter: blur(24px) saturate(180%);
    border-bottom: 1px solid var(--glass-border);
    padding: 12px 16px;
    box-shadow: var(--shadow-lg);
    animation: slideDown 0.3s ease-out;
  }

  #main-nav.open {
    display: block;
  }

  #main-nav ul {
    flex-direction: column;
    gap: 4px;
    overflow: visible;
  }

  #main-nav a {
    padding: 12px 16px;
    font-size: 0.95rem;
  }

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

  #menu-toggle {
    display: block;
  }

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

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

  .banner-slides .slide:last-child {
    grid-column: 1 / -1;
    max-width: 480px;
    margin: 0 auto;
  }
}

@media (max-width: 768px) {
  :root {
    --header-h: 56px;
  }

  body {
    font-size: 15px;
  }

  .header-inner {
    padding: 0 12px;
    gap: 8px;
  }

  .logo svg {
    width: 34px;
    height: 34px;
  }

  .logo-text {
    font-size: 1rem;
  }

  .site-search {
    display: none;
  }

  #theme-toggle {
    padding: 6px 12px;
    font-size: 0.78rem;
  }

  #menu-toggle {
    padding: 6px 14px;
    font-size: 0.78rem;
  }

  main {
    padding: 0 14px;
  }

  #hero {
    padding: 36px 20px 32px;
    border-radius: var(--radius-lg);
    margin: 12px 0 36px;
  }

  #hero h1 {
    font-size: 1.45rem;
  }

  .hero-lead {
    font-size: 0.92rem;
    margin-bottom: 24px;
  }

  .banner-slides {
    grid-template-columns: 1fr;
    gap: 14px;
    margin-bottom: 28px;
  }

  .banner-slides .slide:last-child {
    max-width: none;
  }

  .banner-stats {
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
  }

  .banner-stats li {
    padding: 14px 8px;
  }

  .banner-stats strong {
    font-size: 1.25rem;
  }

  .banner-stats span {
    font-size: 0.75rem;
  }

  main > section:not(#hero) {
    margin-bottom: 36px;
  }

  #brand,
  #products,
  #solutions,
  #applications,
  #cases,
  #news,
  #articles,
  #howto,
  #faq,
  #contact,
  #sitemap,
  #links {
    padding: 24px 18px;
    border-radius: var(--radius-lg);
  }

  main > section h2 {
    font-size: 1.2rem;
    margin-bottom: 18px;
  }

  main > section h3 {
    font-size: 1rem;
  }

  #brand ul,
  #products ul {
    grid-template-columns: 1fr;
  }

  #contact address ul {
    grid-template-columns: 1fr;
  }

  .post {
    padding: 18px 16px;
  }

  .post h3 {
    font-size: 1rem;
  }

  .faq-list dt button {
    padding: 14px 42px 14px 16px;
    font-size: 0.92rem;
  }

  .faq-list dd.open {
    padding: 14px 16px;
  }

  #site-footer {
    padding: 32px 16px 24px;
    margin-top: 40px;
  }

  #back-to-top {
    right: 16px;
    bottom: 16px;
    width: 42px;
    height: 42px;
    font-size: 0.65rem;
  }
}

@media (max-width: 480px) {
  .logo-text {
    display: none;
  }

  #theme-toggle {
    padding: 6px 10px;
    font-size: 0.72rem;
  }

  #menu-toggle {
    padding: 6px 12px;
    font-size: 0.72rem;
  }

  #hero {
    padding: 28px 16px 24px;
  }

  #hero h1 {
    font-size: 1.25rem;
  }

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

  .banner-stats strong {
    font-size: 1.1rem;
  }

  .sitemap-list a,
  .friend-links a {
    padding: 6px 14px;
    font-size: 0.82rem;
  }

  #site-footer ul a {
    padding: 5px 12px;
    font-size: 0.8rem;
  }
}

/* ===== Reduced Motion ===== */
@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;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }
}

/* ===== Print ===== */
@media print {
  #site-header,
  #back-to-top,
  #theme-toggle,
  #menu-toggle,
  .site-search {
    display: none !important;
  }

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

  main > section {
    break-inside: avoid;
    box-shadow: none;
    border: 1px solid #ddd;
  }
}