:root {
  --bg-primary: #f5f7fb;
  --bg-secondary: #ffffff;
  --bg-card: #ffffff;
  --bg-glass: rgba(255, 255, 255, 0.72);
  --bg-glass-border: rgba(255, 255, 255, 0.55);
  --text-primary: #14142b;
  --text-secondary: #4b4b6b;
  --text-muted: #82829c;
  --border-color: #e6e8f2;
  --brand-primary: #e94560;
  --brand-secondary: #0f3460;
  --brand-accent: #533483;
  --brand-glow: rgba(233, 69, 96, 0.35);
  --shadow-sm: 0 2px 10px rgba(15, 52, 96, 0.06);
  --shadow-md: 0 10px 30px rgba(15, 52, 96, 0.10);
  --shadow-lg: 0 22px 60px rgba(15, 52, 96, 0.16);
  --shadow-glow: 0 12px 40px rgba(233, 69, 96, 0.28);
  --radius-sm: 10px;
  --radius-md: 18px;
  --radius-lg: 28px;
  --transition: 0.28s cubic-bezier(0.22, 1, 0.36, 1);
  --header-height: 66px;
  --gradient-brand: linear-gradient(135deg, #0f3460 0%, #533483 55%, #e94560 100%);
  --gradient-accent: linear-gradient(135deg, #e94560 0%, #533483 100%);
  --gradient-gold: linear-gradient(135deg, #ffd700 0%, #ffb347 100%);
}

[data-theme="dark"] {
  --bg-primary: #0b0b16;
  --bg-secondary: #131326;
  --bg-card: #1a1a30;
  --bg-glass: rgba(26, 26, 48, 0.6);
  --bg-glass-border: rgba(255, 255, 255, 0.08);
  --text-primary: #f2f2fa;
  --text-secondary: #b4b4d4;
  --text-muted: #7e7ea0;
  --border-color: #28284a;
  --shadow-sm: 0 2px 10px rgba(0, 0, 0, 0.35);
  --shadow-md: 0 10px 30px rgba(0, 0, 0, 0.45);
  --shadow-lg: 0 22px 60px rgba(0, 0, 0, 0.55);
  --shadow-glow: 0 12px 40px rgba(233, 69, 96, 0.35);
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Helvetica, Arial, sans-serif;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.72;
  transition: background-color var(--transition), color var(--transition);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

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

ul, ol {
  list-style: none;
}

button {
  font-family: inherit;
}

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

.top-notice {
  background: var(--gradient-brand);
  color: #fff;
  text-align: center;
  padding: 9px 16px;
  font-size: 0.85rem;
  letter-spacing: 0.4px;
  position: relative;
  z-index: 1001;
}

.top-notice a {
  color: #ffd700;
  font-weight: 700;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.top-notice a:hover {
  color: #fff;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background-color: var(--bg-glass);
  -webkit-backdrop-filter: saturate(180%) blur(18px);
  backdrop-filter: saturate(180%) blur(18px);
  border-bottom: 1px solid var(--bg-glass-border);
  box-shadow: var(--shadow-sm);
  transition: background-color var(--transition), box-shadow var(--transition);
}

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

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.logo svg {
  width: 38px;
  height: 38px;
  transition: transform var(--transition);
}

.logo:hover svg {
  transform: rotate(-6deg) scale(1.06);
}

.logo-text {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--text-primary);
  letter-spacing: -0.5px;
}

.logo-text span {
  color: var(--brand-primary);
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 2px;
}

.main-nav a {
  padding: 8px 14px;
  border-radius: 999px;
  color: var(--text-secondary);
  font-size: 0.9rem;
  font-weight: 500;
  transition: all var(--transition);
  white-space: nowrap;
  position: relative;
}

.main-nav a:hover {
  background-color: var(--bg-primary);
  color: var(--brand-primary);
  transform: translateY(-1px);
}

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

.search-box {
  display: flex;
  align-items: center;
  background-color: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: 999px;
  padding: 4px 4px 4px 16px;
  transition: border-color var(--transition), box-shadow var(--transition), background-color var(--transition);
}

.search-box:focus-within {
  border-color: var(--brand-primary);
  box-shadow: 0 0 0 4px rgba(233, 69, 96, 0.14);
}

.search-box input {
  border: none;
  background: transparent;
  outline: none;
  color: var(--text-primary);
  font-size: 0.85rem;
  width: 148px;
  font-family: inherit;
}

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

.search-box button {
  background: var(--gradient-accent);
  color: #fff;
  border: none;
  border-radius: 999px;
  padding: 7px 16px;
  font-size: 0.8rem;
  cursor: pointer;
  font-weight: 600;
  transition: transform var(--transition), box-shadow var(--transition), filter var(--transition);
}

.search-box button:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-glow);
  filter: brightness(1.06);
}

.theme-toggle {
  background-color: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: 50%;
  width: 38px;
  height: 38px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition);
  color: var(--text-secondary);
}

.theme-toggle:hover {
  border-color: var(--brand-primary);
  color: var(--brand-primary);
  transform: rotate(18deg) scale(1.05);
}

.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
  color: var(--text-primary);
}

.breadcrumb-nav {
  background-color: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
  padding: 11px 0;
  font-size: 0.8rem;
  color: var(--text-muted);
}

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

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

.breadcrumb-nav li::after {
  content: "/";
  color: var(--text-muted);
  opacity: 0.6;
}

.breadcrumb-nav li:last-child::after {
  content: "";
}

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

.breadcrumb-nav a:hover {
  color: var(--brand-primary);
}

main {
  display: block;
}

section {
  padding: 72px 0;
  position: relative;
}

section:nth-child(even) {
  background-color: var(--bg-secondary);
}

.section-header {
  text-align: center;
  margin-bottom: 52px;
}

.section-header h2 {
  font-size: 2.05rem;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 12px;
  letter-spacing: -0.6px;
  line-height: 1.3;
}

.section-header p {
  color: var(--text-secondary);
  font-size: 1rem;
  max-width: 660px;
  margin: 0 auto;
}

.section-header .divider {
  width: 60px;
  height: 4px;
  background: var(--gradient-accent);
  border-radius: 999px;
  margin: 18px auto 0;
}

.hero {
  position: relative;
  padding: 88px 0 72px;
  background: var(--gradient-brand);
  color: #fff;
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  top: -55%;
  right: -18%;
  width: 640px;
  height: 640px;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.10) 0%, transparent 68%);
  border-radius: 50%;
  pointer-events: none;
  animation: floatBlob 14s ease-in-out infinite;
}

.hero::after {
  content: "";
  position: absolute;
  bottom: -35%;
  left: -12%;
  width: 460px;
  height: 460px;
  background: radial-gradient(circle, rgba(233, 69, 96, 0.32) 0%, transparent 68%);
  border-radius: 50%;
  pointer-events: none;
  animation: floatBlob 18s ease-in-out infinite reverse;
}

@keyframes floatBlob {
  0%, 100% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(-24px, 24px) scale(1.08); }
}

.hero .container {
  position: relative;
  z-index: 2;
}

.hero-content {
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  gap: 52px;
  align-items: center;
}

.hero-text h1 {
  font-size: 2.85rem;
  font-weight: 900;
  line-height: 1.18;
  margin-bottom: 22px;
  letter-spacing: -1.2px;
}

.hero-text h1 span {
  color: #ffd700;
  text-shadow: 0 4px 24px rgba(255, 215, 0, 0.35);
}

.hero-text .hero-sub {
  font-size: 1.06rem;
  opacity: 0.94;
  margin-bottom: 30px;
  line-height: 1.85;
  max-width: 560px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 36px;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--gradient-gold);
  color: #14142b;
  padding: 15px 34px;
  border-radius: 999px;
  font-weight: 700;
  font-size: 1rem;
  border: none;
  cursor: pointer;
  transition: all var(--transition);
  box-shadow: 0 6px 22px rgba(255, 215, 0, 0.38);
}

.btn-primary:hover {
  transform: translateY(-3px) scale(1.02);
  box-shadow: 0 12px 32px rgba(255, 215, 0, 0.5);
  color: #14142b;
  filter: brightness(1.05);
}

.btn-outline {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 255, 255, 0.08);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  color: #fff;
  padding: 15px 34px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 1rem;
  border: 1.5px solid rgba(255, 255, 255, 0.45);
  cursor: pointer;
  transition: all var(--transition);
}

.btn-outline:hover {
  border-color: #fff;
  background: rgba(255, 255, 255, 0.16);
  color: #fff;
  transform: translateY(-3px);
}

.hero-stats {
  display: flex;
  gap: 36px;
  flex-wrap: wrap;
}

.hero-stat-item {
  text-align: left;
}

.hero-stat-item .num {
  font-size: 1.85rem;
  font-weight: 800;
  color: #ffd700;
  line-height: 1.2;
  letter-spacing: -0.5px;
}

.hero-stat-item .label {
  font-size: 0.84rem;
  opacity: 0.82;
  margin-top: 2px;
}

.hero-visual {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
}

.hero-visual svg {
  width: 100%;
  max-width: 480px;
  filter: drop-shadow(0 24px 48px rgba(0, 0, 0, 0.35));
  animation: heroFloat 6s ease-in-out infinite;
}

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

.concept-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 26px;
}

.concept-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 34px 30px;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
  position: relative;
  overflow: hidden;
}

.concept-card::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: linear-gradient(135deg, rgba(233, 69, 96, 0.06), transparent 60%);
  opacity: 0;
  transition: opacity var(--transition);
  pointer-events: none;
}

.concept-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
  border-color: var(--brand-primary);
}

.concept-card:hover::after {
  opacity: 1;
}

.concept-card .icon {
  width: 50px;
  height: 50px;
  border-radius: 14px;
  background: var(--gradient-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  margin-bottom: 20px;
  box-shadow: var(--shadow-glow);
  transition: transform var(--transition);
}

.concept-card:hover .icon {
  transform: scale(1.08) rotate(-4deg);
}

.concept-card h3 {
  font-size: 1.16rem;
  font-weight: 700;
  margin-bottom: 10px;
  color: var(--text-primary);
}

.concept-card p {
  font-size: 0.92rem;
  color: var(--text-secondary);
  line-height: 1.82;
}

.product-showcase {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 52px;
  align-items: center;
}

.product-showcase.reverse {
  direction: rtl;
}

.product-showcase.reverse > * {
  direction: ltr;
}

.product-text h3 {
  font-size: 1.62rem;
  font-weight: 800;
  margin-bottom: 16px;
  color: var(--text-primary);
  letter-spacing: -0.4px;
}

.product-text > p {
  color: var(--text-secondary);
  margin-bottom: 22px;
  font-size: 0.98rem;
  line-height: 1.82;
}

.feature-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.feature-list li {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  font-size: 0.92rem;
  color: var(--text-secondary);
  transition: transform var(--transition);
}

.feature-list li:hover {
  transform: translateX(4px);
}

.feature-list li .check {
  flex-shrink: 0;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: rgba(233, 69, 96, 0.12);
  color: var(--brand-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  font-weight: 700;
  margin-top: 2px;
}

.product-visual {
  background: var(--bg-glass);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  border-radius: var(--radius-lg);
  padding: 34px;
  display: flex;
  justify-content: center;
  align-items: center;
  border: 1px solid var(--bg-glass-border);
  box-shadow: var(--shadow-md);
  transition: transform var(--transition), box-shadow var(--transition);
}

.product-visual:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

.product-visual svg {
  width: 100%;
  max-width: 360px;
}

.solution-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 26px;
}

.solution-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 30px;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}

.solution-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: var(--gradient-accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition);
}

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

.solution-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
  border-color: rgba(233, 69, 96, 0.4);
}

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

.solution-card p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.82;
}

.industry-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  justify-content: center;
}

.industry-tag {
  background: var(--bg-glass);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  border: 1px solid var(--bg-glass-border);
  border-radius: 999px;
  padding: 11px 26px;
  font-size: 0.9rem;
  color: var(--text-secondary);
  font-weight: 500;
  transition: all var(--transition);
  cursor: default;
  box-shadow: var(--shadow-sm);
}

.industry-tag:hover {
  border-color: var(--brand-primary);
  color: var(--brand-primary);
  background: rgba(233, 69, 96, 0.06);
  transform: translateY(-3px);
  box-shadow: var(--shadow-glow);
}

.case-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 26px;
}

.case-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition);
}

.case-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
  border-color: rgba(233, 69, 96, 0.35);
}

.case-card .case-img {
  height: 180px;
  background: var(--gradient-brand);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 2.6rem;
  font-weight: 800;
  opacity: 0.94;
  position: relative;
  overflow: hidden;
}

.case-card .case-img::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 70% 30%, rgba(255, 255, 255, 0.18), transparent 60%);
}

.case-card .case-body {
  padding: 26px;
}

.case-card h3 {
  font-size: 1.06rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--text-primary);
  line-height: 1.5;
}

.case-card p {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.75;
}

.case-card .case-meta {
  margin-top: 16px;
  font-size: 0.8rem;
  color: var(--text-muted);
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.testimonial-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 26px;
}

.testimonial-card {
  background: var(--bg-glass);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  border: 1px solid var(--bg-glass-border);
  border-radius: var(--radius-md);
  padding: 30px;
  box-shadow: var(--shadow-sm);
  position: relative;
  transition: transform var(--transition), box-shadow var(--transition);
}

.testimonial-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
}

.testimonial-card::before {
  content: "\201C";
  position: absolute;
  top: 10px;
  left: 20px;
  font-size: 3.6rem;
  color: var(--brand-primary);
  opacity: 0.18;
  font-family: Georgia, serif;
  line-height: 1;
}

.testimonial-card p {
  font-size: 0.92rem;
  color: var(--text-secondary);
  line-height: 1.85;
  margin-bottom: 20px;
  position: relative;
  z-index: 1;
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: 12px;
}

.testimonial-author .avatar {
  width: 46px;
  height: 46px;
  border-radius: 50%;
  background: var(--gradient-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-weight: 700;
  font-size: 0.92rem;
  box-shadow: var(--shadow-glow);
}

.testimonial-author .info .name {
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--text-primary);
}

.testimonial-author .info .role {
  font-size: 0.78rem;
  color: var(--text-muted);
}

.news-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 26px;
}

.news-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 26px;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition);
  display: flex;
  flex-direction: column;
}

.news-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
  border-color: var(--brand-primary);
}

.news-card .news-date {
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-bottom: 10px;
}

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

.news-card p {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.75;
  flex: 1;
}

.news-card .read-more {
  margin-top: 16px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--brand-primary);
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: gap var(--transition);
}

.news-card .read-more:hover {
  gap: 9px;
}

.article-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 22px;
}

.article-item {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 26px;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition);
}

.article-item:hover {
  box-shadow: var(--shadow-md);
  border-color: var(--brand-primary);
  transform: translateY(-4px);
}

.article-item .article-tag {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--brand-primary);
  background: rgba(233, 69, 96, 0.1);
  padding: 4px 12px;
  border-radius: 999px;
  margin-bottom: 12px;
}

.article-item h3 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--text-primary);
  line-height: 1.5;
}

.article-item p {
  font-size: 0.86rem;
  color: var(--text-secondary);
  line-height: 1.75;
}

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

.faq-list {
  max-width: 880px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.faq-item {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: border-color var(--transition), box-shadow var(--transition);
}

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

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 19px 26px;
  cursor: pointer;
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--text-primary);
  gap: 16px;
  transition: background-color var(--transition);
}

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

.faq-question .arrow {
  flex-shrink: 0;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background-color: var(--bg-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform var(--transition), background-color var(--transition), color var(--transition);
  color: var(--text-secondary);
  font-size: 0.8rem;
}

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

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s cubic-bezier(0.22, 1, 0.36, 1), padding 0.4s ease;
  padding: 0 26px;
}

.faq-item.open .faq-answer {
  max-height: 600px;
  padding: 0 26px 22px;
}

.faq-answer p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.85;
}

.howto-wrapper {
  max-width: 880px;
  margin: 0 auto;
}

.howto-step {
  display: flex;
  gap: 22px;
  margin-bottom: 30px;
  position: relative;
}

.howto-step:last-child {
  margin-bottom: 0;
}

.howto-step .step-num {
  flex-shrink: 0;
  width: 46px;
  height: 46px;
  border-radius: 50%;
  background: var(--gradient-accent);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 1.1rem;
  position: relative;
  z-index: 2;
  box-shadow: var(--shadow-glow);
}

.howto-step .step-body {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 22px 26px;
  flex: 1;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}

.howto-step .step-body:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
  border-color: rgba(233, 69, 96, 0.35);
}

.howto-step .step-body h3 {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--text-primary);
}

.howto-step .step-body p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.82;
}

.howto-step .step-body ul {
  margin-top: 12px;
  display: flex;
  flex-direction: column;
  gap: 7px;
}

.howto-step .step-body ul li {
  font-size: 0.88rem;
  color: var(--text-secondary);
  padding-left: 18px;
  position: relative;
  line-height: 1.7;
}

.howto-step .step-body ul li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--gradient-accent);
}

.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 26px;
}

.contact-card {
  background: var(--bg-glass);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  border: 1px solid var(--bg-glass-border);
  border-radius: var(--radius-md);
  padding: 30px;
  text-align: center;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition);
}

.contact-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
  border-color: rgba(233, 69, 96, 0.35);
}

.contact-card .contact-icon {
  width: 58px;
  height: 58px;
  border-radius: 50%;
  background: var(--gradient-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  margin: 0 auto 18px;
  box-shadow: var(--shadow-glow);
  transition: transform var(--transition);
}

.contact-card:hover .contact-icon {
  transform: scale(1.08) rotate(-5deg);
}

.contact-card h3 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--text-primary);
}

.contact-card p {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.72;
}

.contact-card a {
  font-weight: 600;
}

.sitemap-links {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 26px;
}

.sitemap-col h3 {
  font-size: 0.95rem;
  font-weight: 700;
  margin-bottom: 14px;
  color: var(--text-primary);
}

.sitemap-col ul {
  display: flex;
  flex-direction: column;
  gap: 9px;
}

.sitemap-col ul li a {
  font-size: 0.85rem;
  color: var(--text-secondary);
  transition: color var(--transition), padding-left var(--transition);
  display: inline-block;
}

.sitemap-col ul li a:hover {
  color: var(--brand-primary);
  padding-left: 4px;
}

.friend-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: center;
  margin-top: 36px;
}

.friend-links a {
  font-size: 0.82rem;
  color: var(--text-muted);
  padding: 7px 16px;
  border: 1px solid var(--border-color);
  border-radius: 999px;
  transition: all var(--transition);
  background: var(--bg-card);
}

.friend-links a:hover {
  border-color: var(--brand-primary);
  color: var(--brand-primary);
  transform: translateY(-2px);
  box-shadow: var(--shadow-sm);
}

.footer-bottom {
  background-color: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  padding: 44px 0 26px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 34px;
  margin-bottom: 34px;
}

.footer-brand .logo {
  margin-bottom: 16px;
}

.footer-brand p {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.82;
  max-width: 330px;
}

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

.footer-col ul {
  display: flex;
  flex-direction: column;
  gap: 9px;
}

.footer-col ul li a {
  font-size: 0.83rem;
  color: var(--text-secondary);
  transition: color var(--transition), padding-left var(--transition);
  display: inline-block;
}

.footer-col ul li a:hover {
  color: var(--brand-primary);
  padding-left: 4px;
}

.footer-legal {
  border-top: 1px solid var(--border-color);
  padding-top: 22px;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  font-size: 0.78rem;
  color: var(--text-muted);
}

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

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

.footer-legal .legal-links a:hover {
  color: var(--brand-primary);
}

.back-to-top {
  position: fixed;
  bottom: 34px;
  right: 34px;
  width: 50px;
  height: 50px;
  border-radius: 50%;
  background: var(--gradient-accent);
  color: #fff;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-md);
  opacity: 0;
  visibility: hidden;
  transform: translateY(14px);
  transition: all var(--transition);
  z-index: 999;
}

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

.back-to-top:hover {
  transform: translateY(-4px) scale(1.06);
  box-shadow: var(--shadow-glow);
}

.fade-in {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.7s cubic-bezier(0.22, 1, 0.36, 1), transform 0.7s cubic-bezier(0.22, 1, 0.36, 1);
}

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

@media (max-width: 980px) {
  .hero-content {
    grid-template-columns: 1fr;
    gap: 36px;
  }
  .hero-text h1 {
    font-size: 2.3rem;
  }
  .product-showcase,
  .product-showcase.reverse {
    grid-template-columns: 1fr;
    direction: ltr;
    gap: 30px;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  .main-nav {
    display: none;
    position: absolute;
    top: var(--header-height);
    left: 0;
    right: 0;
    background: var(--bg-glass);
    -webkit-backdrop-filter: saturate(180%) blur(20px);
    backdrop-filter: saturate(180%) blur(20px);
    border-bottom: 1px solid var(--border-color);
    flex-direction: column;
    padding: 12px;
    gap: 4px;
    box-shadow: var(--shadow-md);
  }
  .main-nav.open {
    display: flex;
  }
  .main-nav a {
    width: 100%;
    padding: 12px 16px;
  }
  .mobile-menu-btn {
    display: flex;
  }
  .search-box {
    display: none;
  }
  .hero {
    padding: 64px 0 56px;
  }
  .hero-text h1 {
    font-size: 1.85rem;
  }
  .hero-text .hero-sub {
    font-size: 0.98rem;
  }
  .section-header h2 {
    font-size: 1.6rem;
  }
  section {
    padding: 52px 0;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 26px;
  }
  .back-to-top {
    bottom: 20px;
    right: 20px;
    width: 44px;
    height: 44px;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 16px;
  }
  .hero-text h1 {
    font-size: 1.55rem;
  }
  .hero-stats {
    gap: 22px;
  }
  .hero-stat-item .num {
    font-size: 1.4rem;
  }
  .btn-primary, .btn-outline {
    padding: 12px 26px;
    font-size: 0.9rem;
  }
  .howto-step {
    flex-direction: column;
    gap: 12px;
  }
  .section-header {
    margin-bottom: 38px;
  }
}

@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;
  }
}