:root {
  --brand-primary: #ff6b3d;
  --brand-secondary: #f7b32b;
  --brand-dark: #1e1e2f;
  --brand-light: #fef9f4;
  --text-primary: #1e1e2f;
  --text-secondary: #4a4a5a;
  --bg-body: #ffffff;
  --bg-section: #f9f7f4;
  --bg-card: #ffffff;
  --border-color: #e8e4df;
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 6px 20px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 12px 36px rgba(0, 0, 0, 0.08);
  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --transition: 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --font-sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  --max-width: 1200px;
  --nav-height: 72px;
}

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

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

body {
  font-family: var(--font-sans);
  color: var(--text-primary);
  background-color: var(--bg-body);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
  transition: background-color var(--transition), color var(--transition);
}

body.dark-mode {
  --brand-primary: #ff8a5c;
  --brand-secondary: #f9c74f;
  --brand-dark: #f0f0f5;
  --brand-light: #1a1a2e;
  --text-primary: #e8e8f0;
  --text-secondary: #b0b0c0;
  --bg-body: #12121f;
  --bg-section: #1a1a2e;
  --bg-card: #1e1e30;
  --border-color: #2e2e42;
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.2);
  --shadow-md: 0 6px 20px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 12px 36px rgba(0, 0, 0, 0.4);
}

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

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

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

button {
  font-family: inherit;
}

::selection {
  background: rgba(255, 107, 61, 0.25);
  color: var(--text-primary);
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.72);
  backdrop-filter: blur(18px) saturate(180%);
  -webkit-backdrop-filter: blur(18px) saturate(180%);
  border-bottom: 1px solid var(--border-color);
  transition: background var(--transition), box-shadow var(--transition), border-color var(--transition);
}

body.dark-mode .site-header {
  background: rgba(18, 18, 31, 0.72);
}

.site-header.scrolled {
  box-shadow: var(--shadow-md);
  background: rgba(255, 255, 255, 0.9);
}

body.dark-mode .site-header.scrolled {
  background: rgba(18, 18, 31, 0.9);
}

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

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--text-primary);
  white-space: nowrap;
  transition: opacity var(--transition);
}

.logo:hover {
  opacity: 0.85;
  color: var(--text-primary);
}

.logo svg {
  width: 36px;
  height: 36px;
  flex-shrink: 0;
  transition: transform var(--transition);
}

.logo:hover svg {
  transform: rotate(-6deg) scale(1.05);
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 4px;
}

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

.main-nav a:hover,
.main-nav a.active {
  color: var(--brand-primary);
  background: rgba(255, 107, 61, 0.08);
}

.main-nav a.active {
  font-weight: 600;
}

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

.search-box {
  display: flex;
  align-items: center;
  background: var(--bg-section);
  border-radius: 999px;
  padding: 6px 14px;
  border: 1px solid var(--border-color);
  transition: border var(--transition), box-shadow var(--transition), background var(--transition);
}

.search-box:focus-within {
  border-color: var(--brand-primary);
  box-shadow: 0 0 0 3px rgba(255, 107, 61, 0.12);
  background: var(--bg-card);
}

.search-box input {
  border: none;
  background: transparent;
  outline: none;
  font-size: 0.85rem;
  color: var(--text-primary);
  width: 130px;
  font-family: var(--font-sans);
}

.search-box input::placeholder {
  color: var(--text-secondary);
  opacity: 0.6;
}

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

.search-box button:hover {
  color: var(--brand-primary);
  transform: scale(1.1);
}

.icon-btn {
  background: none;
  border: 1px solid var(--border-color);
  border-radius: 50%;
  width: 38px;
  height: 38px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: var(--text-secondary);
  transition: all var(--transition);
}

.icon-btn:hover {
  border-color: var(--brand-primary);
  color: var(--brand-primary);
  background: rgba(255, 107, 61, 0.06);
  transform: translateY(-1px);
}

.icon-btn:active {
  transform: scale(0.95);
}

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

.mobile-nav {
  display: none;
  position: fixed;
  top: var(--nav-height);
  left: 0;
  right: 0;
  background: var(--bg-body);
  border-bottom: 1px solid var(--border-color);
  padding: 16px 24px;
  box-shadow: var(--shadow-md);
  z-index: 999;
  flex-direction: column;
  gap: 4px;
  max-height: calc(100vh - var(--nav-height));
  overflow-y: auto;
  animation: slideDown 0.3s ease;
}

@keyframes slideDown {
  from {
    opacity: 0;
    transform: translateY(-8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

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

.mobile-nav a {
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  color: var(--text-secondary);
  transition: all var(--transition);
}

.mobile-nav a:hover {
  background: rgba(255, 107, 61, 0.06);
  color: var(--brand-primary);
}

.breadcrumb {
  padding: 20px 0 0;
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.breadcrumb ol {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  align-items: center;
}

.breadcrumb li + li::before {
  content: "/";
  margin-right: 6px;
  color: var(--border-color);
}

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

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

.breadcrumb span {
  color: var(--text-primary);
  font-weight: 500;
}

.hero {
  padding: 32px 0 48px;
}

.hero-slider {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: linear-gradient(135deg, #ff6b3d 0%, #f7b32b 100%);
  box-shadow: var(--shadow-lg);
}

.hero-slider::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 80% 20%, rgba(255, 255, 255, 0.18) 0%, transparent 50%);
  pointer-events: none;
}

.hero-slides {
  display: flex;
  transition: transform 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.hero-slide {
  min-width: 100%;
  padding: 56px 48px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  color: #ffffff;
  position: relative;
}

.hero-slide h1 {
  font-size: 2.4rem;
  font-weight: 800;
  line-height: 1.3;
  margin-bottom: 16px;
  letter-spacing: -0.02em;
  text-shadow: 0 2px 12px rgba(0, 0, 0, 0.08);
}

.hero-slide p {
  font-size: 1.05rem;
  opacity: 0.94;
  max-width: 620px;
  margin-bottom: 24px;
  line-height: 1.8;
}

.hero-slide .cta-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: #ffffff;
  color: #ff6b3d;
  padding: 12px 28px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.95rem;
  width: fit-content;
  transition: all var(--transition);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.12);
}

.hero-slide .cta-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.18);
  color: #ff6b3d;
}

.hero-dots {
  position: absolute;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 10px;
  z-index: 10;
}

.hero-dots button {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  border: none;
  background: rgba(255, 255, 255, 0.45);
  cursor: pointer;
  transition: all var(--transition);
  padding: 0;
}

.hero-dots button:hover {
  background: rgba(255, 255, 255, 0.75);
}

.hero-dots button.active {
  background: #ffffff;
  width: 28px;
  border-radius: 999px;
}

.stats-section {
  padding: 48px 0;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.stat-card {
  text-align: center;
  padding: 32px 20px;
  background: var(--bg-card);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}

.stat-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: rgba(255, 107, 61, 0.3);
}

.stat-number {
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--brand-primary);
  line-height: 1.2;
  margin-bottom: 4px;
  font-variant-numeric: tabular-nums;
}

.stat-label {
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.section {
  padding: 64px 0;
}

.section-alt {
  background: var(--bg-section);
  transition: background var(--transition);
}

.section-header {
  margin-bottom: 40px;
}

.section-header h2 {
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 10px;
  letter-spacing: -0.01em;
  position: relative;
  padding-left: 16px;
}

.section-header h2::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 4px;
  height: 70%;
  border-radius: 999px;
  background: linear-gradient(180deg, var(--brand-primary), var(--brand-secondary));
}

.section-header p {
  font-size: 1rem;
  color: var(--text-secondary);
  max-width: 720px;
  padding-left: 16px;
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}

.about-text h3 {
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 12px;
  margin-top: 20px;
  color: var(--text-primary);
}

.about-text h3:first-child {
  margin-top: 0;
}

.about-text p {
  color: var(--text-secondary);
  margin-bottom: 16px;
  font-size: 0.95rem;
}

.about-text strong {
  color: var(--text-primary);
  font-weight: 600;
}

.about-visual {
  display: flex;
  justify-content: center;
  align-items: center;
}

.about-visual svg {
  width: 100%;
  max-width: 400px;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  transition: transform var(--transition), box-shadow var(--transition);
}

.about-visual svg:hover {
  transform: translateY(-4px) scale(1.01);
  box-shadow: var(--shadow-lg);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 32px 28px;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--brand-primary), var(--brand-secondary));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition);
}

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

.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: rgba(255, 107, 61, 0.25);
}

.feature-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-sm);
  background: rgba(255, 107, 61, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
  color: var(--brand-primary);
  transition: transform var(--transition), background var(--transition);
}

.feature-card:hover .feature-icon {
  transform: scale(1.08) rotate(-4deg);
  background: rgba(255, 107, 61, 0.16);
}

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

.feature-card p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

.articles-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.article-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 28px;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
  display: flex;
  flex-direction: column;
}

.article-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
  border-color: rgba(255, 107, 61, 0.25);
}

.article-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.8rem;
  color: var(--text-secondary);
  margin-bottom: 12px;
}

.article-tag {
  background: rgba(255, 107, 61, 0.1);
  color: var(--brand-primary);
  padding: 2px 10px;
  border-radius: 999px;
  font-weight: 500;
  font-size: 0.75rem;
  transition: background var(--transition);
}

.article-card:hover .article-tag {
  background: rgba(255, 107, 61, 0.18);
}

.article-card h3 {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--text-primary);
  line-height: 1.5;
  transition: color var(--transition);
}

.article-card:hover h3 {
  color: var(--brand-primary);
}

.article-card p {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.7;
  flex: 1;
  margin-bottom: 14px;
}

.article-link {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--brand-primary);
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: gap var(--transition);
  width: fit-content;
}

.article-link:hover {
  gap: 8px;
}

.faq-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

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

.faq-item:hover {
  box-shadow: var(--shadow-sm);
  border-color: rgba(255, 107, 61, 0.2);
}

.faq-item.open {
  border-color: rgba(255, 107, 61, 0.35);
  box-shadow: var(--shadow-sm);
}

.faq-question {
  width: 100%;
  background: none;
  border: none;
  text-align: left;
  padding: 20px 24px;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-primary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  font-family: var(--font-sans);
  transition: color var(--transition);
  line-height: 1.5;
}

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

.faq-question .arrow {
  transition: transform var(--transition);
  flex-shrink: 0;
  color: var(--text-secondary);
}

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

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

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94), padding 0.4s;
  padding: 0 24px;
}

.faq-item.open .faq-answer {
  max-height: 600px;
  padding: 0 24px 20px;
}

.faq-answer p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.8;
}

.howto-steps {
  display: flex;
  flex-direction: column;
  gap: 20px;
  counter-reset: step;
}

.howto-step {
  display: flex;
  gap: 20px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 28px;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}

.howto-step:hover {
  transform: translateX(4px);
  box-shadow: var(--shadow-sm);
  border-color: rgba(255, 107, 61, 0.25);
}

.step-num {
  flex-shrink: 0;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--brand-primary), var(--brand-secondary));
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1.1rem;
  box-shadow: 0 4px 12px rgba(255, 107, 61, 0.25);
  transition: transform var(--transition);
}

.howto-step:hover .step-num {
  transform: scale(1.08);
}

.step-content h3 {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 6px;
  color: var(--text-primary);
}

.step-content p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.testimonial-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 28px;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
  position: relative;
}

.testimonial-card::before {
  content: "\201C";
  position: absolute;
  top: 12px;
  right: 20px;
  font-size: 3rem;
  line-height: 1;
  color: rgba(255, 107, 61, 0.12);
  font-family: Georgia, serif;
}

.testimonial-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: rgba(255, 107, 61, 0.25);
}

.testimonial-stars {
  color: var(--brand-secondary);
  font-size: 0.9rem;
  letter-spacing: 2px;
  margin-bottom: 12px;
}

.testimonial-card blockquote {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 16px;
  font-style: normal;
  position: relative;
  z-index: 1;
}

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

.testimonial-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--brand-primary), var(--brand-secondary));
  display: flex;
  align-items: center;
  justify-content: center;
  color: #ffffff;
  font-weight: 700;
  font-size: 0.85rem;
  flex-shrink: 0;
  box-shadow: 0 3px 10px rgba(255, 107, 61, 0.2);
}

.testimonial-author-info strong {
  display: block;
  font-size: 0.88rem;
  color: var(--text-primary);
}

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

.news-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.news-item {
  display: flex;
  gap: 20px;
  padding: 20px 24px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
  align-items: flex-start;
}

.news-item:hover {
  transform: translateX(4px);
  box-shadow: var(--shadow-sm);
  border-color: rgba(255, 107, 61, 0.25);
}

.news-date {
  flex-shrink: 0;
  width: 64px;
  text-align: center;
  padding: 8px 0;
  background: rgba(255, 107, 61, 0.08);
  border-radius: var(--radius-sm);
  transition: background var(--transition);
}

.news-item:hover .news-date {
  background: rgba(255, 107, 61, 0.14);
}

.news-date .day {
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--brand-primary);
  line-height: 1.1;
}

.news-date .month {
  font-size: 0.75rem;
  color: var(--text-secondary);
}

.news-content h3 {
  font-size: 0.98rem;
  font-weight: 600;
  margin-bottom: 4px;
  color: var(--text-primary);
  transition: color var(--transition);
}

.news-item:hover .news-content h3 {
  color: var(--brand-primary);
}

.news-content p {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
}

.contact-info h3 {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 20px;
  color: var(--text-primary);
}

.contact-item {
  display: flex;
  gap: 14px;
  margin-bottom: 20px;
  align-items: flex-start;
  transition: transform var(--transition);
}

.contact-item:hover {
  transform: translateX(3px);
}

.contact-item-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  background: rgba(255, 107, 61, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--brand-primary);
  flex-shrink: 0;
  transition: background var(--transition), transform var(--transition);
}

.contact-item:hover .contact-item-icon {
  background: rgba(255, 107, 61, 0.16);
  transform: scale(1.05);
}

.contact-item-text strong {
  display: block;
  font-size: 0.88rem;
  color: var(--text-primary);
  margin-bottom: 2px;
}

.contact-item-text span {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.contact-map {
  background: var(--bg-section);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 320px;
  overflow: hidden;
  transition: box-shadow var(--transition), border-color var(--transition);
}

.contact-map:hover {
  box-shadow: var(--shadow-md);
  border-color: rgba(255, 107, 61, 0.25);
}

.contact-map svg {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition);
}

.contact-map:hover svg {
  transform: scale(1.02);
}

.site-footer {
  background: var(--bg-section);
  border-top: 1px solid var(--border-color);
  padding: 56px 0 32px;
  transition: background var(--transition);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}

.footer-brand .logo {
  font-size: 1.1rem;
}

.footer-brand p {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-top: 12px;
  max-width: 320px;
}

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

.footer-col ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

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

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

.footer-bottom {
  border-top: 1px solid var(--border-color);
  padding-top: 24px;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
}

.footer-bottom p {
  font-size: 0.8rem;
  color: var(--text-secondary);
}

.footer-bottom-links {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
}

.footer-bottom-links a {
  font-size: 0.8rem;
  color: var(--text-secondary);
}

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

.back-to-top {
  position: fixed;
  bottom: 32px;
  right: 32px;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--brand-primary);
  color: #ffffff;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-md);
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
  transition: all var(--transition);
  z-index: 900;
}

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

.back-to-top:hover {
  background: var(--brand-secondary);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.back-to-top:active {
  transform: scale(0.94);
}

.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

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

.lazy-svg {
  background: var(--bg-section);
  border-radius: var(--radius-sm);
}

:focus-visible {
  outline: 2px solid var(--brand-primary);
  outline-offset: 2px;
}

@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;
  }
}

@media (max-width: 1024px) {
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .testimonials-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
  .about-grid {
    grid-template-columns: 1fr;
  }
  .contact-grid {
    grid-template-columns: 1fr;
  }
  .hero-slide h1 {
    font-size: 2rem;
  }
}

@media (max-width: 768px) {
  .main-nav {
    display: none;
  }
  .mobile-menu-btn {
    display: flex;
  }
  .search-box {
    display: none;
  }
  .hero {
    padding: 24px 0 32px;
  }
  .hero-slide {
    padding: 40px 28px;
  }
  .hero-slide h1 {
    font-size: 1.6rem;
  }
  .hero-slide p {
    font-size: 0.95rem;
  }
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }
  .stat-card {
    padding: 24px 16px;
  }
  .stat-number {
    font-size: 1.6rem;
  }
  .features-grid {
    grid-template-columns: 1fr;
  }
  .articles-grid {
    grid-template-columns: 1fr;
  }
  .testimonials-grid {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }
  .section {
    padding: 48px 0;
  }
  .section-header h2 {
    font-size: 1.4rem;
  }
  .news-item {
    flex-direction: column;
    gap: 12px;
  }
  .news-date {
    width: 48px;
  }
  .back-to-top {
    bottom: 20px;
    right: 20px;
    width: 40px;
    height: 40px;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 16px;
  }
  .hero-slide {
    padding: 32px 20px;
  }
  .hero-slide h1 {
    font-size: 1.35rem;
  }
  .hero-slide .cta-btn {
    padding: 10px 22px;
    font-size: 0.88rem;
  }
  .stats-grid {
    grid-template-columns: 1fr 1fr;
    gap: 12px;
  }
  .stat-card {
    padding: 20px 12px;
  }
  .stat-number {
    font-size: 1.4rem;
  }
  .howto-step {
    flex-direction: column;
    gap: 12px;
    padding: 20px;
  }
  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
  }
  .article-card {
    padding: 22px;
  }
  .feature-card {
    padding: 26px 22px;
  }
}