:root {
  --brand-primary: #1a1a2e;
  --brand-secondary: #16213e;
  --brand-accent: #e94560;
  --brand-accent-hover: #c62a47;
  --brand-light: #f5f6fa;
  --brand-white: #ffffff;
  --brand-gray: #6c757d;
  --brand-gray-light: #e9ecef;
  --brand-dark: #0f0f1a;
  --brand-text: #2d2d3f;
  --brand-text-light: #8a8a9e;
  --brand-success: #28a745;
  --brand-warning: #ffc107;
  --brand-info: #17a2b8;
  --glass-bg: rgba(255, 255, 255, 0.72);
  --glass-border: rgba(255, 255, 255, 0.35);
  --glass-shadow: 0 8px 32px rgba(26, 26, 46, 0.12);
  --gradient-1: linear-gradient(135deg, #1a1a2e 0%, #16213e 45%, #0f0f1a 100%);
  --gradient-2: linear-gradient(135deg, #e94560 0%, #c62a47 100%);
  --gradient-3: linear-gradient(120deg, #1a1a2e 0%, #2d2d5e 50%, #16213e 100%);
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 16px 40px rgba(0, 0, 0, 0.12);
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
  --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Helvetica, Arial, sans-serif;
}

[data-theme="dark"] {
  --brand-primary: #0f0f1a;
  --brand-secondary: #1a1a2e;
  --brand-light: #1e1e2f;
  --brand-white: #2a2a3d;
  --brand-gray: #a0a0b8;
  --brand-gray-light: #2e2e42;
  --brand-text: #e8e8f0;
  --brand-text-light: #9a9ab0;
  --glass-bg: rgba(42, 42, 61, 0.72);
  --glass-border: rgba(255, 255, 255, 0.08);
  --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.45);
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 16px 40px rgba(0, 0, 0, 0.5);
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  scroll-padding-top: 88px;
}

body {
  font-family: var(--font-family);
  background-color: var(--brand-light);
  color: var(--brand-text);
  line-height: 1.7;
  font-size: 16px;
  transition: background-color 0.3s ease, color 0.3s ease;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

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

ul, ol {
  list-style: none;
}

button {
  font-family: inherit;
}

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

.site-header {
  background: rgba(26, 26, 46, 0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  color: var(--brand-white);
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
  transition: var(--transition);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--brand-white);
  letter-spacing: 0.5px;
  transition: var(--transition);
}

.logo:hover {
  color: var(--brand-white);
  transform: scale(1.02);
}

.logo svg {
  width: 36px;
  height: 36px;
  filter: drop-shadow(0 2px 8px rgba(233, 69, 96, 0.4));
}

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

.nav-menu a {
  color: rgba(255, 255, 255, 0.85);
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  font-weight: 500;
  transition: var(--transition);
  position: relative;
}

.nav-menu a::after {
  content: "";
  position: absolute;
  bottom: 4px;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 2px;
  background: var(--brand-accent);
  border-radius: 2px;
  transition: width 0.3s ease;
}

.nav-menu a:hover,
.nav-menu a.active {
  background-color: rgba(255, 255, 255, 0.12);
  color: var(--brand-white);
}

.nav-menu a:hover::after,
.nav-menu a.active::after {
  width: 24px;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.search-btn,
.theme-toggle,
.menu-toggle {
  background: rgba(255, 255, 255, 0.1);
  border: none;
  color: var(--brand-white);
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: var(--transition);
  font-size: 1.1rem;
}

.search-btn:hover,
.theme-toggle:hover,
.menu-toggle:hover {
  background: rgba(255, 255, 255, 0.2);
  transform: translateY(-2px);
}

.search-btn:active,
.theme-toggle:active,
.menu-toggle:active {
  transform: scale(0.95);
}

.menu-toggle {
  display: none;
}

.search-bar {
  display: none;
  padding: 12px 0;
  background: rgba(22, 33, 62, 0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.search-bar.active {
  display: block;
  animation: slideDown 0.3s ease;
}

@keyframes slideDown {
  from { opacity: 0; transform: translateY(-10px); }
  to { opacity: 1; transform: translateY(0); }
}

.search-bar form {
  display: flex;
  gap: 8px;
  max-width: 600px;
  margin: 0 auto;
}

.search-bar input {
  flex: 1;
  padding: 10px 16px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.08);
  color: var(--brand-white);
  font-size: 0.95rem;
  outline: none;
  transition: var(--transition);
  font-family: inherit;
}

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

.search-bar input:focus {
  border-color: var(--brand-accent);
  background: rgba(255, 255, 255, 0.12);
  box-shadow: 0 0 0 3px rgba(233, 69, 96, 0.15);
}

.search-bar button {
  padding: 10px 24px;
  background: var(--gradient-2);
  color: var(--brand-white);
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-weight: 600;
  transition: var(--transition);
  white-space: nowrap;
}

.search-bar button:hover {
  background: var(--brand-accent-hover);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(233, 69, 96, 0.35);
}

.banner-section {
  position: relative;
  overflow: hidden;
  background: var(--gradient-1);
  min-height: 420px;
  display: flex;
  align-items: center;
}

.banner-section::before {
  content: "";
  position: absolute;
  top: -50%;
  right: -20%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(233, 69, 96, 0.15) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

.banner-section::after {
  content: "";
  position: absolute;
  bottom: -40%;
  left: -10%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(22, 33, 62, 0.6) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

.banner-slider {
  position: relative;
  width: 100%;
  height: 100%;
  z-index: 1;
}

.banner-slide {
  display: none;
  padding: 60px 0;
  animation: fadeInUp 0.6s ease;
}

.banner-slide.active {
  display: block;
}

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(24px); }
  to { opacity: 1; transform: translateY(0); }
}

.banner-content {
  max-width: 720px;
}

.banner-badge {
  display: inline-block;
  background: rgba(233, 69, 96, 0.2);
  color: #ff8fa3;
  padding: 6px 16px;
  border-radius: 50px;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 18px;
  border: 1px solid rgba(233, 69, 96, 0.3);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  letter-spacing: 0.3px;
}

.banner-content h1 {
  font-size: 2.6rem;
  font-weight: 800;
  color: #ffffff;
  line-height: 1.3;
  margin-bottom: 18px;
  letter-spacing: -0.5px;
  text-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
}

.banner-content h1 .highlight {
  color: #e94560;
  position: relative;
  display: inline-block;
}

.banner-content h1 .highlight::after {
  content: "";
  position: absolute;
  bottom: 2px;
  left: 0;
  width: 100%;
  height: 8px;
  background: rgba(233, 69, 96, 0.25);
  border-radius: 4px;
  z-index: -1;
}

.banner-content p {
  font-size: 1.1rem;
  color: rgba(255, 255, 255, 0.78);
  margin-bottom: 28px;
  line-height: 1.8;
  max-width: 620px;
}

.banner-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: var(--radius-sm);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: var(--transition);
  text-decoration: none;
  position: relative;
  overflow: hidden;
}

.btn-primary {
  background: var(--gradient-2);
  color: #ffffff;
  box-shadow: 0 4px 16px rgba(233, 69, 96, 0.3);
}

.btn-primary:hover {
  background: var(--brand-accent-hover);
  color: #ffffff;
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(233, 69, 96, 0.45);
}

.btn-primary:active {
  transform: translateY(0);
}

.btn-outline {
  background: rgba(255, 255, 255, 0.06);
  color: #ffffff;
  border: 2px solid rgba(255, 255, 255, 0.3);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.btn-outline:hover {
  border-color: #ffffff;
  background: rgba(255, 255, 255, 0.12);
  color: #ffffff;
  transform: translateY(-2px);
}

.banner-dots {
  position: absolute;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 10px;
  z-index: 2;
}

.banner-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.3);
  cursor: pointer;
  transition: var(--transition);
  border: none;
  padding: 0;
}

.banner-dot.active {
  background: var(--brand-accent);
  width: 28px;
  border-radius: 5px;
  box-shadow: 0 0 12px rgba(233, 69, 96, 0.5);
}

.banner-dot:hover {
  background: rgba(255, 255, 255, 0.6);
}

.banner-dot.active:hover {
  background: var(--brand-accent);
}

.breadcrumb {
  padding: 16px 0;
  font-size: 0.9rem;
  color: var(--brand-text-light);
}

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

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

.breadcrumb li:not(:last-child)::after {
  content: "›";
  color: var(--brand-text-light);
  font-size: 1.1rem;
}

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

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

.breadcrumb li:last-child {
  color: var(--brand-text);
  font-weight: 500;
}

.section {
  padding: 64px 0;
  position: relative;
}

.section-header {
  text-align: center;
  margin-bottom: 48px;
}

.section-header h2 {
  font-size: 2rem;
  font-weight: 700;
  color: var(--brand-text);
  margin-bottom: 12px;
  position: relative;
  display: inline-block;
}

.section-header h2::after {
  content: "";
  position: absolute;
  bottom: -8px;
  left: 50%;
  transform: translateX(-50%);
  width: 56px;
  height: 4px;
  background: var(--gradient-2);
  border-radius: 2px;
}

.section-header p {
  font-size: 1.05rem;
  color: var(--brand-text-light);
  max-width: 640px;
  margin: 16px auto 0;
}

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

.brand-intro-text h3 {
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--brand-text);
  margin-bottom: 16px;
}

.brand-intro-text p {
  color: var(--brand-text-light);
  margin-bottom: 16px;
  font-size: 1rem;
  line-height: 1.85;
}

.brand-stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  margin-top: 28px;
}

.stat-item {
  background: var(--glass-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  padding: 20px;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--glass-border);
  text-align: center;
  transition: var(--transition);
}

.stat-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: rgba(233, 69, 96, 0.3);
}

.stat-number {
  font-size: 2rem;
  font-weight: 800;
  color: var(--brand-accent);
  display: block;
  line-height: 1.2;
}

.stat-label {
  font-size: 0.9rem;
  color: var(--brand-text-light);
  margin-top: 4px;
}

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

.brand-intro-visual svg {
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  transition: var(--transition);
}

.brand-intro-visual svg:hover {
  transform: translateY(-6px) scale(1.01);
  box-shadow: 0 24px 60px rgba(26, 26, 46, 0.25);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 28px;
}

.feature-card {
  background: var(--glass-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  padding: 32px 28px;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  border: 1px solid var(--glass-border);
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 0;
  background: var(--gradient-2);
  transition: height 0.4s ease;
}

.feature-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(233, 69, 96, 0.2);
}

.feature-card:hover::before {
  height: 100%;
}

.feature-icon {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-sm);
  background: var(--gradient-1);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  transition: var(--transition);
  box-shadow: 0 4px 16px rgba(26, 26, 46, 0.2);
}

.feature-card:hover .feature-icon {
  transform: scale(1.08) rotate(-3deg);
}

.feature-icon svg {
  width: 28px;
  height: 28px;
  stroke: #e94560;
  fill: none;
  stroke-width: 1.8;
}

.feature-card h3 {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--brand-text);
  margin-bottom: 10px;
}

.feature-card p {
  color: var(--brand-text-light);
  font-size: 0.95rem;
  line-height: 1.75;
}

.apps-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 24px;
}

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

.app-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
  border-color: rgba(233, 69, 96, 0.2);
}

.app-card-visual {
  height: 140px;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.app-card-visual svg {
  width: 100%;
  height: 100%;
  transition: transform 0.5s ease;
}

.app-card:hover .app-card-visual svg {
  transform: scale(1.05);
}

.app-card-body {
  padding: 22px;
}

.app-card-body h3 {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--brand-text);
  margin-bottom: 8px;
}

.app-card-body p {
  font-size: 0.92rem;
  color: var(--brand-text-light);
  line-height: 1.7;
}

.articles-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 28px;
}

.article-card {
  background: var(--glass-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  border: 1px solid var(--glass-border);
  display: flex;
  flex-direction: column;
}

.article-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
  border-color: rgba(233, 69, 96, 0.2);
}

.article-card-header {
  padding: 24px 24px 0;
}

.article-tag {
  display: inline-block;
  background: rgba(233, 69, 96, 0.1);
  color: var(--brand-accent);
  padding: 4px 12px;
  border-radius: 50px;
  font-size: 0.78rem;
  font-weight: 600;
  margin-bottom: 12px;
  transition: var(--transition);
}

.article-card:hover .article-tag {
  background: rgba(233, 69, 96, 0.18);
}

.article-card-header h3 {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--brand-text);
  line-height: 1.5;
  margin-bottom: 8px;
  transition: var(--transition);
}

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

.article-meta {
  font-size: 0.82rem;
  color: var(--brand-text-light);
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

.article-card-body {
  padding: 16px 24px 24px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.article-card-body p {
  font-size: 0.92rem;
  color: var(--brand-text-light);
  line-height: 1.7;
  flex: 1;
  margin-bottom: 16px;
}

.article-link {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--brand-accent);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: var(--transition);
}

.article-link:hover {
  gap: 10px;
  color: var(--brand-accent-hover);
}

.faq-list {
  max-width: 820px;
  margin: 0 auto;
}

.faq-item {
  background: var(--glass-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-radius: var(--radius-sm);
  margin-bottom: 12px;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--glass-border);
  overflow: hidden;
  transition: var(--transition);
}

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

.faq-question {
  width: 100%;
  padding: 20px 24px;
  background: none;
  border: none;
  text-align: left;
  font-size: 1.02rem;
  font-weight: 600;
  color: var(--brand-text);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  font-family: inherit;
  transition: var(--transition);
}

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

.faq-arrow {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  transition: transform 0.3s ease;
  stroke: var(--brand-text-light);
}

.faq-item.active .faq-arrow {
  transform: rotate(180deg);
  stroke: var(--brand-accent);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, padding 0.3s ease;
  padding: 0 24px;
}

.faq-item.active .faq-answer {
  max-height: 600px;
  padding: 0 24px 22px;
}

.faq-answer p {
  font-size: 0.95rem;
  color: var(--brand-text-light);
  line-height: 1.8;
}

.howto-steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
  counter-reset: step;
}

.howto-step {
  background: var(--glass-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  padding: 28px 24px;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--glass-border);
  position: relative;
  transition: var(--transition);
}

.howto-step:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: rgba(233, 69, 96, 0.2);
}

.howto-step-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--gradient-1);
  color: #e94560;
  font-weight: 800;
  font-size: 1.1rem;
  margin-bottom: 16px;
  box-shadow: 0 4px 12px rgba(26, 26, 46, 0.2);
  transition: var(--transition);
}

.howto-step:hover .howto-step-number {
  transform: scale(1.1);
  box-shadow: 0 6px 18px rgba(233, 69, 96, 0.3);
}

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

.howto-step p {
  font-size: 0.92rem;
  color: var(--brand-text-light);
  line-height: 1.7;
}

.cases-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 28px;
}

.case-card {
  background: var(--glass-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-radius: var(--radius-md);
  padding: 32px 28px;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--glass-border);
  transition: var(--transition);
  position: relative;
}

.case-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
  border-color: rgba(233, 69, 96, 0.2);
}

.case-quote {
  font-size: 2.4rem;
  color: var(--brand-accent);
  line-height: 1;
  margin-bottom: 8px;
  font-family: Georgia, serif;
  opacity: 0.8;
}

.case-card p {
  font-size: 0.95rem;
  color: var(--brand-text-light);
  line-height: 1.8;
  margin-bottom: 20px;
}

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

.case-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--gradient-2);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-weight: 700;
  font-size: 1rem;
  flex-shrink: 0;
  box-shadow: 0 4px 12px rgba(233, 69, 96, 0.3);
}

.case-author-info strong {
  display: block;
  font-size: 0.92rem;
  color: var(--brand-text);
}

.case-author-info span {
  font-size: 0.82rem;
  color: var(--brand-text-light);
}

.news-list {
  max-width: 900px;
  margin: 0 auto;
}

.news-item {
  display: flex;
  gap: 20px;
  padding: 20px 0;
  border-bottom: 1px solid var(--brand-gray-light);
  transition: var(--transition);
}

.news-item:hover {
  padding-left: 8px;
  border-bottom-color: rgba(233, 69, 96, 0.3);
}

.news-date {
  flex-shrink: 0;
  width: 80px;
  text-align: center;
}

.news-date-day {
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--brand-accent);
  line-height: 1.1;
}

.news-date-month {
  font-size: 0.8rem;
  color: var(--brand-text-light);
}

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

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

.news-content p {
  font-size: 0.9rem;
  color: var(--brand-text-light);
  line-height: 1.6;
}

.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 24px;
}

.contact-card {
  background: var(--glass-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  padding: 28px 24px;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--glass-border);
  text-align: center;
  transition: var(--transition);
}

.contact-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: rgba(233, 69, 96, 0.2);
}

.contact-icon {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background: var(--gradient-1);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
  transition: var(--transition);
  box-shadow: 0 4px 16px rgba(26, 26, 46, 0.2);
}

.contact-card:hover .contact-icon {
  transform: scale(1.08);
  box-shadow: 0 6px 20px rgba(233, 69, 96, 0.3);
}

.contact-icon svg {
  width: 24px;
  height: 24px;
  stroke: #e94560;
  fill: none;
  stroke-width: 1.8;
}

.contact-card h3 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--brand-text);
  margin-bottom: 6px;
}

.contact-card p {
  font-size: 0.92rem;
  color: var(--brand-text-light);
  line-height: 1.7;
}

.site-footer {
  background: var(--gradient-1);
  color: rgba(255, 255, 255, 0.7);
  padding: 56px 0 0;
  margin-top: 0;
  position: relative;
  overflow: hidden;
}

.site-footer::before {
  content: "";
  position: absolute;
  top: -50%;
  right: -10%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(233, 69, 96, 0.08) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 40px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  position: relative;
  z-index: 1;
}

.footer-brand {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.2rem;
  font-weight: 700;
  color: #ffffff;
}

.footer-logo svg {
  width: 32px;
  height: 32px;
  filter: drop-shadow(0 2px 8px rgba(233, 69, 96, 0.4));
}

.footer-brand p {
  font-size: 0.88rem;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.6);
}

.footer-col h4 {
  color: #ffffff;
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 18px;
}

.footer-col ul li {
  margin-bottom: 10px;
}

.footer-col ul a {
  color: rgba(255, 255, 255, 0.6);
  font-size: 0.88rem;
  transition: var(--transition);
  display: inline-block;
}

.footer-col ul a:hover {
  color: #e94560;
  padding-left: 4px;
}

.footer-bottom {
  padding: 24px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 0.82rem;
  color: rgba(255, 255, 255, 0.5);
  position: relative;
  z-index: 1;
}

.footer-bottom a {
  color: rgba(255, 255, 255, 0.5);
}

.footer-bottom a:hover {
  color: #e94560;
}

.back-to-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--gradient-2);
  color: #ffffff;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 8px 24px rgba(233, 69, 96, 0.4);
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: var(--transition);
  z-index: 999;
}

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

.back-to-top:hover {
  background: var(--brand-accent-hover);
  transform: translateY(-4px);
  box-shadow: 0 12px 32px rgba(233, 69, 96, 0.5);
}

.back-to-top:active {
  transform: translateY(-2px) scale(0.95);
}

.back-to-top svg {
  width: 22px;
  height: 22px;
  stroke: #ffffff;
  fill: none;
  stroke-width: 2.5;
}

.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s cubic-bezier(0.25, 0.8, 0.25, 1), transform 0.6s cubic-bezier(0.25, 0.8, 0.25, 1);
}

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

::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: var(--brand-gray-light);
}

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

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

.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;
}

::selection {
  background: rgba(233, 69, 96, 0.25);
  color: var(--brand-text);
}

:focus-visible {
  outline: 2px solid var(--brand-accent);
  outline-offset: 2px;
  border-radius: 4px;
}

@media (max-width: 1024px) {
  .brand-intro {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }

  .banner-content h1 {
    font-size: 2.2rem;
  }
}

@media (max-width: 768px) {
  .nav-menu {
    display: none;
    position: absolute;
    top: 68px;
    left: 0;
    right: 0;
    background: rgba(22, 33, 62, 0.98);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    flex-direction: column;
    padding: 16px;
    gap: 4px;
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.3);
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  }

  .nav-menu.open {
    display: flex;
    animation: slideDown 0.3s ease;
  }

  .nav-menu a {
    width: 100%;
    padding: 12px 16px;
  }

  .nav-menu a::after {
    display: none;
  }

  .menu-toggle {
    display: flex;
  }

  .banner-section {
    min-height: 360px;
  }

  .banner-slide {
    padding: 44px 0;
  }

  .banner-content h1 {
    font-size: 1.9rem;
  }

  .banner-content p {
    font-size: 1rem;
  }

  .section {
    padding: 44px 0;
  }

  .section-header {
    margin-bottom: 36px;
  }

  .section-header h2 {
    font-size: 1.6rem;
  }

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

  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }

  .news-item {
    flex-direction: column;
    gap: 8px;
  }

  .news-date {
    width: auto;
    text-align: left;
    display: flex;
    gap: 6px;
    align-items: baseline;
  }

  .news-date-day {
    font-size: 1.2rem;
  }

  .brand-intro-visual svg {
    height: 240px;
  }
}

@media (max-width: 480px) {
  .banner-content h1 {
    font-size: 1.55rem;
  }

  .banner-actions {
    flex-direction: column;
  }

  .btn {
    width: 100%;
    justify-content: center;
  }

  .brand-stats {
    grid-template-columns: 1fr 1fr;
    gap: 12px;
  }

  .stat-number {
    font-size: 1.5rem;
  }

  .stat-item {
    padding: 16px 12px;
  }

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

  .search-bar form {
    flex-direction: column;
  }

  .search-bar button {
    width: 100%;
  }

  .features-grid,
  .apps-grid,
  .articles-grid,
  .cases-grid,
  .contact-grid {
    grid-template-columns: 1fr;
  }

  .howto-steps {
    grid-template-columns: 1fr;
  }
}

@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 print {
  .site-header,
  .back-to-top,
  .banner-section,
  .search-bar {
    display: none;
  }

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

  .section {
    padding: 20px 0;
  }
}