/* ==================================================
   控天智能拓客官网 - 主样式表
   Main Stylesheet for KT Smart Customer Acquisition
   ================================================== */

/* ==================================================
   导航栏
   ================================================== */

.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-fixed);
  background: rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-light);
  transition: all var(--transition-base);
}

[data-theme="dark"] .navbar {
  background: rgba(15, 23, 42, 0.8);
}

.navbar.scrolled {
  box-shadow: var(--shadow-md);
}

.navbar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.navbar-brand {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.navbar-brand img {
  height: 36px;
  width: auto;
}

.navbar-nav {
  display: none;
  align-items: center;
  gap: var(--space-8);
}

@media (min-width: 1024px) {
  .navbar-nav {
    display: flex;
  }
}

.nav-link {
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--text-secondary);
  padding: var(--space-2) 0;
  position: relative;
  transition: color var(--transition-fast);
}

.nav-link:hover,
.nav-link.active {
  color: var(--primary-600);
}

[data-theme="dark"] .nav-link:hover,
[data-theme="dark"] .nav-link.active {
  color: var(--primary-400);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--gradient-primary);
  transition: width var(--transition-base);
}

.nav-link:hover::after,
.nav-link.active::after {
  width: 100%;
}

.navbar-actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

/* 主题切换按钮 */
.theme-toggle {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  background: var(--bg-secondary);
  transition: all var(--transition-fast);
}

.theme-toggle:hover {
  background: var(--bg-tertiary);
  color: var(--text-primary);
}

.theme-toggle .icon-sun {
  display: none;
}

[data-theme="dark"] .theme-toggle .icon-sun {
  display: block;
}

[data-theme="dark"] .theme-toggle .icon-moon {
  display: none;
}

/* 语言切换 */
.lang-switcher {
  position: relative;
}

.lang-btn {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-lg);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
  background: var(--bg-secondary);
  transition: all var(--transition-fast);
}

.lang-btn:hover {
  background: var(--bg-tertiary);
}

.lang-dropdown {
  position: absolute;
  top: 100%;
  right: 0;
  margin-top: var(--space-2);
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  min-width: 140px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  transition: all var(--transition-base);
}

.lang-switcher:hover .lang-dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.lang-option {
  display: block;
  padding: var(--space-3) var(--space-4);
  font-size: 0.875rem;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.lang-option:first-child {
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
}

.lang-option:last-child {
  border-radius: 0 0 var(--radius-lg) var(--radius-lg);
}

.lang-option:hover,
.lang-option.active {
  background: var(--bg-secondary);
  color: var(--primary-600);
}

/* CTA按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  font-size: 0.9375rem;
  font-weight: 600;
  border-radius: var(--radius-lg);
  transition: all var(--transition-base);
  white-space: nowrap;
}

.btn-primary {
  background: var(--gradient-primary);
  color: white;
  box-shadow: 0 4px 14px rgba(59, 130, 246, 0.4);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(59, 130, 246, 0.5);
}

.btn-secondary {
  background: var(--bg-secondary);
  color: var(--text-primary);
  border: 1px solid var(--border-light);
}

.btn-secondary:hover {
  background: var(--bg-tertiary);
  border-color: var(--border-medium);
}

.btn-lg {
  padding: var(--space-4) var(--space-8);
  font-size: 1rem;
}

.btn-sm {
  padding: var(--space-2) var(--space-4);
  font-size: 0.875rem;
}

/* 移动端菜单按钮 */
.menu-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  color: var(--text-primary);
}

@media (min-width: 1024px) {
  .menu-toggle {
    display: none;
  }
}

/* ==================================================
   Hero区域
   ================================================== */

.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: 72px;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: -1;
}

.hero-bg::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 800px;
  height: 800px;
  background: radial-gradient(circle, rgba(59, 130, 246, 0.15) 0%, transparent 70%);
  border-radius: 50%;
}

.hero-bg::after {
  content: '';
  position: absolute;
  bottom: -30%;
  left: -10%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(118, 75, 162, 0.1) 0%, transparent 70%);
  border-radius: 50%;
}

.hero .container {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-12);
  align-items: center;
}

@media (min-width: 1024px) {
  .hero .container {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-16);
  }
}

.home-hero {
  --hero-tilt-x: 0deg;
  --hero-tilt-y: 0deg;
  --hero-shift-x: 0px;
  --hero-shift-y: 0px;
}

.home-hero .container {
  grid-template-columns: 1fr;
}

@media (min-width: 1024px) {
  .home-hero .container {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 1.2fr);
    gap: var(--space-10);
  }
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  background: var(--primary-100);
  color: var(--primary-700);
  font-size: 0.875rem;
  font-weight: 600;
  border-radius: var(--radius-full);
  margin-bottom: var(--space-6);
}

[data-theme="dark"] .hero-badge {
  background: rgba(59, 130, 246, 0.2);
  color: var(--primary-300);
}

.hero-title {
  font-size: 2.5rem;
  font-weight: 800;
  line-height: 1.1;
  color: var(--text-primary);
  margin-bottom: var(--space-6);
  max-width: 720px;
}

@media (min-width: 640px) {
  .hero-title {
    font-size: 3.5rem;
    max-width: 850px;
  }
}

@media (min-width: 1024px) {
  .hero-title {
    font-size: 4rem;
    max-width: 1000px;
  }
}

.hero-title .gradient-text {
  background: var(--gradient-hero);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-description {
  font-size: 1.125rem;
  color: var(--text-secondary);
  max-width: 540px;
  margin-bottom: var(--space-8);
}

.home-hero .hero-copy {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.home-hero .hero-badge {
  box-shadow: 0 0 0 rgba(59, 130, 246, 0.25);
  animation: badgePulse 6s ease-in-out infinite;
}

.home-hero .hero-brand {
  display: flex;
  align-items: baseline;
  gap: var(--space-3);
  margin: var(--space-4) 0 var(--space-3);
}

.home-hero .hero-brand-kt {
  font-size: 3.5rem;
  font-weight: 800;
  background: var(--gradient-hero);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.home-hero .hero-brand-text {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--text-primary);
}

.home-hero .hero-tagline {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: var(--space-4);
}

.home-hero .hero-title {
  font-size: 2.4rem;
  line-height: 1.15;
  margin-bottom: var(--space-5);
  max-width: none;
}

@media (min-width: 640px) {
  .home-hero .hero-title {
    font-size: 2.8rem;
  }
}

@media (min-width: 1024px) {
  .home-hero .hero-title {
    font-size: 3.2rem;
  }
}

.home-hero .hero-description {
  max-width: 620px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  margin-bottom: var(--space-10);
}

.hero-cta-secondary {
  position: relative;
  overflow: hidden;
  border-color: rgba(59, 130, 246, 0.35);
  background: rgba(59, 130, 246, 0.08);
  color: var(--primary-600);
  box-shadow: 0 8px 20px rgba(37, 99, 235, 0.18);
}

[data-theme="dark"] .hero-cta-secondary {
  color: var(--primary-300);
  border-color: rgba(59, 130, 246, 0.5);
  background: rgba(59, 130, 246, 0.12);
}

.hero-cta-secondary::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, transparent 0%, rgba(255, 255, 255, 0.35) 45%, transparent 60%);
  transform: translateX(-120%);
  transition: transform 0.6s ease;
  opacity: 0.6;
}

.hero-cta-secondary:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 28px rgba(37, 99, 235, 0.28);
  border-color: var(--primary-500);
  background: rgba(59, 130, 246, 0.16);
}

.hero-cta-secondary:hover::after {
  transform: translateX(120%);
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
}

.home-hero .hero-stats {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-5);
  width: 100%;
}

@media (min-width: 1024px) {
  .home-hero .hero-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

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

.stat-item {
  text-align: center;
}

.stat-value {
  font-size: 1.875rem;
  font-weight: 800;
  color: var(--primary-600);
  line-height: 1;
}

[data-theme="dark"] .stat-value {
  color: var(--primary-400);
}

.stat-label {
  font-size: 0.875rem;
  color: var(--text-tertiary);
  margin-top: var(--space-2);
}

/* Hero右侧展示 */
.hero-visual {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
}

.home-hero .hero-visual {
  justify-content: flex-end;
}

.hero-image-wrapper {
  position: relative;
  width: 100%;
  max-width: 600px;
  margin: 0 auto;
  display: flex;
  justify-content: center;
  align-items: center;
}

.home-hero .hero-image-wrapper {
  max-width: 720px;
  margin-left: auto;
  animation: heroFloat 10s ease-in-out infinite;
}

.home-hero .hero-image-wrapper::before {
  content: '';
  position: absolute;
  inset: -12%;
  background: radial-gradient(circle, rgba(99, 102, 241, 0.25) 0%, rgba(59, 130, 246, 0.05) 55%, transparent 70%);
  filter: blur(28px);
  opacity: 0.65;
  z-index: -1;
}

.hero-image {
  width: 100%;
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-xl);
}

.home-hero .hero-image {
  border-radius: 20px;
  box-shadow: 0 32px 120px rgba(0, 0, 0, 0.25);
  object-fit: contain;
  height: auto;
  transform: perspective(1200px) rotateY(calc(-6deg + var(--hero-tilt-x))) rotateX(var(--hero-tilt-y)) translate3d(var(--hero-shift-x), var(--hero-shift-y), 0);
  transition: transform 0.25s ease;
  will-change: transform;
}

.hero-floating {
  position: absolute;
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-xl);
  padding: var(--space-4);
  box-shadow: var(--shadow-lg);
  animation: float 6s ease-in-out infinite;
}

.hero-floating-1 {
  top: 10%;
  right: -5%;
  animation-delay: 0s;
}

.hero-floating-2 {
  bottom: 20%;
  left: -10%;
  animation-delay: -3s;
}

@keyframes float {
  0%, 100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-20px);
  }
}

@keyframes heroFloat {
  0%, 100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-10px);
  }
}

@keyframes badgePulse {
  0%, 100% {
    box-shadow: 0 0 0 rgba(59, 130, 246, 0.2);
  }
  50% {
    box-shadow: 0 0 24px rgba(99, 102, 241, 0.35);
  }
}

@media (prefers-reduced-motion: reduce) {
  .floating-shape,
  .home-hero .hero-image-wrapper,
  .home-hero .hero-badge,
  .platform-item,
  .platform-item::after {
    animation: none;
  }

  .home-hero .hero-image {
    transition: none;
    transform: none;
  }

  .platform-item {
    transition: none;
    transform: none;
  }
}

@media (hover: none) {
  .platforms-grid.is-dim .platform-item:not(.is-active) {
    opacity: 1;
    filter: none;
    transform: none;
  }

  .platform-item::after {
    animation: none;
  }
}

.floating-icon {
  width: 48px;
  height: 48px;
  background: var(--gradient-primary);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 1.5rem;
}

.floating-text {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-top: var(--space-2);
}

/* ==================================================
   信任背书区域
   ================================================== */

.trust-section {
  padding: var(--space-20) 0;
  background: var(--bg-secondary);
}

.trust-header {
  text-align: center;
  margin-bottom: var(--space-12);
}

.section-label {
  display: inline-block;
  padding: var(--space-1) var(--space-3);
  background: var(--primary-100);
  color: var(--primary-700);
  font-size: 0.875rem;
  font-weight: 600;
  border-radius: var(--radius-full);
  margin-bottom: var(--space-4);
}

[data-theme="dark"] .section-label {
  background: rgba(59, 130, 246, 0.2);
  color: var(--primary-300);
}

.section-title {
  font-size: 2rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: var(--space-4);
}

@media (min-width: 768px) {
  .section-title {
    font-size: 2.5rem;
  }
}

.section-description {
  font-size: 1.125rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

.trust-stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-6);
}

@media (min-width: 768px) {
  .trust-stats {
    grid-template-columns: repeat(4, 1fr);
  }
}

.trust-card {
  text-align: center;
  padding: var(--space-8) var(--space-6);
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-xl);
  transition: all var(--transition-base);
}

.trust-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.trust-number {
  font-size: 2.5rem;
  font-weight: 800;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.trust-label {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  margin-top: var(--space-2);
}

/* ==================================================
   功能展示区域
   ================================================== */

.features-section {
  padding: var(--space-20) 0;
}

.features-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
  margin-top: var(--space-12);
}

@media (min-width: 640px) {
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .features-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.feature-card {
  padding: var(--space-8);
  background: var(--gradient-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-2xl);
  transition: all var(--transition-base);
}

.feature-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-card);
  border-color: var(--primary-200);
}

[data-theme="dark"] .feature-card:hover {
  border-color: var(--primary-700);
}

.feature-icon {
  width: 56px;
  height: 56px;
  background: var(--gradient-primary);
  border-radius: var(--radius-xl);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 1.5rem;
  margin-bottom: var(--space-6);
}

.feature-title {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: var(--space-3);
}

.feature-description {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ==================================================
   平台支持区域
   ================================================== */

.platforms-section {
  padding: var(--space-20) 0;
  background: var(--bg-secondary);
}

.platforms-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-4);
  margin-top: var(--space-12);
}

@media (min-width: 640px) {
  .platforms-grid {
    grid-template-columns: repeat(5, 1fr);
  }
}

@media (min-width: 1024px) {
  .platforms-grid {
    grid-template-columns: repeat(7, 1fr);
  }
}

.platform-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-6) var(--space-4);
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-xl);
  position: relative;
  overflow: hidden;
  --mx: 0px;
  --my: 0px;
  transform: translate3d(var(--mx), var(--my), 0) scale(1);
  transition: transform 0.35s ease, box-shadow 0.35s ease, border-color 0.35s ease, background 0.35s ease, opacity 0.35s ease, filter 0.35s ease;
}

.platform-item::before {
  content: '';
  position: absolute;
  inset: -35% -10% -30% -10%;
  background: radial-gradient(circle, rgba(99, 102, 241, 0.35) 0%, rgba(59, 130, 246, 0.12) 45%, transparent 70%);
  opacity: 0;
  transition: opacity 0.4s ease;
  pointer-events: none;
}

.platform-item::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, transparent 20%, rgba(255, 255, 255, 0.45) 45%, transparent 70%);
  transform: translateX(-120%);
  pointer-events: none;
}

.platform-item:hover,
.platform-item.is-active {
  transform: translate3d(var(--mx), var(--my), 0) translateY(-6px) scale(1.02);
  box-shadow: 0 16px 40px rgba(15, 23, 42, 0.18);
  border-color: rgba(99, 102, 241, 0.35);
}

.platform-item:hover::before,
.platform-item.is-active::before {
  opacity: 1;
}

.platform-item:hover::after,
.platform-item.is-active::after {
  animation: platformSweep 0.9s ease;
}

.platforms-grid.is-dim .platform-item:not(.is-active) {
  opacity: 0.45;
  filter: saturate(0.6);
  transform: translate3d(var(--mx), var(--my), 0) scale(0.98);
}

.platform-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  transition: transform 0.35s ease, filter 0.35s ease;
}

.platform-item:hover .platform-icon,
.platform-item.is-active .platform-icon {
  transform: translateY(-2px) scale(1.06) rotate(-2deg);
  filter: drop-shadow(0 6px 12px rgba(59, 130, 246, 0.35));
}

.platform-icon-svg svg {
  width: 48px;
  height: 48px;
}

.platform-icon-img img {
  width: 48px;
  height: 48px;
  object-fit: contain;
}


.platform-name {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
  text-align: center;
}

@keyframes platformSweep {
  0% {
    transform: translateX(-120%);
  }
  100% {
    transform: translateX(120%);
  }
}

.advantages-section {
  padding: var(--space-16) 0;
  background: var(--bg-secondary);
}

.advantages-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
  margin-top: var(--space-10);
}

@media (min-width: 768px) {
  .advantages-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-8);
  }
}

.advantage-card {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-2xl);
  padding: var(--space-8);
  text-align: left;
  transition: all var(--transition-base);
}

.advantage-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.advantage-icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--primary-50);
  color: var(--primary-600);
  margin-bottom: var(--space-4);
}

.advantage-icon i {
  font-size: 1.25rem;
}

.advantage-title {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: var(--space-2);
}

.advantage-desc {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ==================================================
   价格区域
   ================================================== */

.pricing-section {
  padding: var(--space-20) 0;
}

.pricing-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
  margin-top: var(--space-12);
}

@media (min-width: 768px) {
  .pricing-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .pricing-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.pricing-card {
  position: relative;
  padding: var(--space-8);
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-2xl);
  transition: all var(--transition-base);
}

.pricing-card.featured {
  border-color: var(--primary-500);
  box-shadow: var(--shadow-glow);
}

.pricing-card.featured::before {
  content: attr(data-badge);
  position: absolute;
  top: var(--space-3);
  right: var(--space-3);
  padding: var(--space-1) var(--space-3);
  background: var(--warning);
  color: white;
  font-size: 0.75rem;
  font-weight: 700;
  border-radius: var(--radius-full);
}

.pricing-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-xl);
}

.pricing-name {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: var(--space-2);
}

.pricing-desc {
  font-size: 0.875rem;
  color: var(--text-tertiary);
  margin-bottom: var(--space-6);
}

.pricing-price {
  display: flex;
  align-items: baseline;
  gap: var(--space-1);
  margin-bottom: var(--space-6);
}

.price-currency {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--text-primary);
}

.price-value {
  font-size: 3rem;
  font-weight: 800;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.price-unit {
  font-size: 1rem;
  color: var(--text-tertiary);
}

.pricing-features {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  margin-bottom: var(--space-8);
}

.pricing-feature {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: 0.9375rem;
  color: var(--text-secondary);
}

.pricing-feature i {
  color: var(--success);
  font-size: 1.125rem;
}

.pricing-feature.included i {
  color: var(--success);
}

.pricing-feature.not-included {
  color: var(--error);
}

.pricing-feature.not-included i {
  color: var(--error);
}

.pricing-cta {
  width: 100%;
}

/* ==================================================
   价格方案预览区域（首页）
   ================================================== */

.pricing-preview-section {
  padding: var(--space-20) 0;
  background: var(--bg-secondary);
}

.pricing-preview-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
  margin-top: var(--space-12);
}

@media (min-width: 768px) {
  .pricing-preview-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-8);
  }
}

.pricing-preview-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-2xl);
  padding: var(--space-8);
  position: relative;
  transition: all var(--transition-base);
  display: flex;
  flex-direction: column;
  height: 100%;
}

.pricing-preview-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}

.pricing-preview-card.featured {
  border-color: var(--border-color);
  box-shadow: none;
}

.pricing-preview-badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--gradient-primary);
  color: white;
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 600;
}

.pricing-preview-header {
  text-align: center;
  margin-bottom: var(--space-6);
}

.pricing-preview-name {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: var(--space-2);
}

.pricing-preview-desc {
  font-size: 0.875rem;
  color: var(--text-secondary);
}

.pricing-preview-price {
  text-align: center;
  margin-bottom: var(--space-6);
}

.pricing-preview-price .price-currency {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--primary-600);
}

.pricing-preview-price .price-value {
  font-size: 3rem;
  font-weight: 800;
  color: var(--primary-600);
  line-height: 1;
}

.pricing-preview-price .price-unit {
  font-size: 1rem;
  color: var(--text-secondary);
}

.pricing-preview-features {
  list-style: none;
  margin-bottom: 0;
  flex: 1;
}

.pricing-preview-features li {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) 0;
  font-size: 0.875rem;
  color: var(--text-primary);
  border-bottom: 1px solid var(--border-light);
}

.pricing-preview-features li:last-child {
  border-bottom: none;
}

.pricing-preview-features li i {
  color: var(--success-500);
  font-size: 0.875rem;
}

.pricing-preview-features li.disabled {
  color: var(--text-muted);
}

.pricing-preview-features li.disabled i {
  color: var(--danger-500);
}

.pricing-preview-features li.highlight {
  font-weight: 600;
  color: var(--primary-600);
}

.pricing-preview-features li.highlight i {
  color: var(--primary-500);
}

.pricing-preview-cta {
  margin-top: var(--space-6);
  text-align: center;
}

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

/* ==================================================
   用户评价区域
   ================================================== */

.testimonials-section {
  padding: var(--space-20) 0;
  background: var(--bg-secondary);
}

.testimonials-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
  margin-top: var(--space-12);
}

@media (min-width: 768px) {
  .testimonials-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

.testimonial-card {
  padding: var(--space-8);
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-2xl);
  transition: all var(--transition-base);
}

.testimonial-card:hover {
  box-shadow: var(--shadow-lg);
}

.testimonial-stars {
  display: flex;
  gap: var(--space-1);
  margin-bottom: var(--space-4);
}

.testimonial-stars i {
  color: var(--warning);
  font-size: 1rem;
}

.testimonial-text {
  font-size: 1rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: var(--space-6);
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.testimonial-avatar {
  width: 48px;
  height: 48px;
  background: var(--gradient-primary);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 1.25rem;
  font-weight: 700;
}

.testimonial-info h4 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
}

.testimonial-info p {
  font-size: 0.875rem;
  color: var(--text-tertiary);
}

/* ==================================================
   评价轮播组件
   ================================================== */

.testimonials-carousel {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  position: relative;
  margin-top: var(--space-12);
}

.carousel-container {
  overflow: hidden;
  flex: 1;
  max-width: 1500px;
  margin: 0 auto;
}

.carousel-track {
  display: flex;
  gap: 1.75rem;
  will-change: transform;
}

.carousel-track.is-controlled {
  animation: none;
  transition: none;
}


@keyframes scroll-left {
  0% {
    transform: translateX(0);
  }
  100% {
    transform: translateX(-50%);
  }
}

.carousel-track .testimonial-card {
  flex: 0 0 clamp(380px, 42vw, 560px);
  min-width: clamp(380px, 42vw, 560px);
  min-height: 320px;
  padding: var(--space-12);
}

.carousel-btn {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 1px solid var(--border-light);
  background: var(--bg-card);
  color: var(--text-primary);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-md);
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.carousel-btn:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
  border-color: var(--primary-300);
}

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

@media (max-width: 768px) {
  .carousel-track .testimonial-card {
    flex: 0 0 100%;
    min-width: 100%;
  }

  .carousel-btn {
    display: none;
  }
}

.testimonial-avatar-img {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  object-fit: cover;
}


/* ==================================================
   CTA区域
   ================================================== */

.cta-section {
  padding: var(--space-20) 0;
  position: relative;
  overflow: hidden;
}

.cta-bg {
  position: absolute;
  inset: 0;
  background: var(--gradient-primary);
  z-index: -1;
}

.cta-bg::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.05'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}

.cta-content {
  text-align: center;
  max-width: 700px;
  margin: 0 auto;
}

.cta-title {
  font-size: 2rem;
  font-weight: 800;
  color: white;
  margin-bottom: var(--space-4);
}

@media (min-width: 768px) {
  .cta-title {
    font-size: 2.5rem;
  }
}

.cta-description {
  font-size: 1.125rem;
  color: rgba(255, 255, 255, 0.9);
  margin-bottom: var(--space-8);
}

.cta-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-4);
}

.btn-white {
  background: white;
  color: var(--primary-600);
  box-shadow: var(--shadow-lg);
}

.btn-white:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-xl);
}

.btn-outline-white {
  background: transparent;
  color: white;
  border: 2px solid rgba(255, 255, 255, 0.5);
}

.btn-outline-white:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: white;
}

/* ==================================================
   页脚
   ================================================== */

.footer {
  padding: var(--space-16) 0 var(--space-8);
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-light);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-10);
  margin-bottom: var(--space-12);
  align-items: start;
}

@media (min-width: 768px) {
  .footer-grid {
    grid-template-columns: 2fr repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .footer-grid {
    grid-template-columns: 2fr repeat(3, 1fr);
  }
}

.footer-brand {
  max-width: 300px;
}

.footer-brand img {
  height: 36px;
  margin-bottom: var(--space-4);
}

.footer-brand p {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  margin-bottom: var(--space-6);
}

.footer-social {
  display: flex;
  gap: var(--space-3);
}

.social-link {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  color: var(--text-secondary);
  transition: all var(--transition-fast);
}

.social-link:hover {
  background: var(--primary-500);
  border-color: var(--primary-500);
  color: white;
  transform: translateY(-2px);
}

.footer-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: var(--space-4);
}


.footer-column {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.footer-contact-column {
  margin-left: 0;
}

.footer-contact-column .footer-title {
  margin-left: 0;
  transform: translateX(20px);
  display: inline-block;
  white-space: nowrap;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.footer-link {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  transition: color var(--transition-fast);
}

.footer-link:hover {
  color: var(--primary-600);
}

[data-theme="dark"] .footer-link:hover {
  color: var(--primary-400);
}

.footer-contact {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.contact-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: 0.9375rem;
  color: var(--text-secondary);
}

.contact-item i {
  color: var(--primary-600);
}

[data-theme="dark"] .contact-item i {
  color: var(--primary-400);
}

.footer-contact-buttons {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  width: 100%;
  align-items: stretch;
}

.footer-contact-buttons .contact-btn {
  width: 100%;
}

.contact-btn {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.375rem 0.5rem;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  color: var(--text-primary);
  text-decoration: none;
  transition: all 0.3s ease;
  justify-content: flex-start;
  font-size: 0.875rem;
}

.contact-btn:hover {
  background: var(--primary-50);
  border-color: var(--primary-500);
  color: var(--primary-600);
  transform: translateY(-2px);
}

.contact-btn i {
  font-size: 0.9375rem;
  color: var(--primary-500);
  width: 1.25rem;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.contact-btn span {
  font-size: 0.875rem;
  font-weight: 500;
  flex: 1;
}

.footer-bottom {
  padding-top: var(--space-8);
  border-top: 1px solid var(--border-light);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-4);
}

@media (min-width: 768px) {
  .footer-bottom {
    flex-direction: row;
    justify-content: space-between;
  }
}

.footer-copyright {
  font-size: 0.875rem;
  color: var(--text-tertiary);
}

.footer-legal {
  display: flex;
  gap: var(--space-6);
}

.footer-legal a {
  font-size: 0.875rem;
  color: var(--text-tertiary);
  transition: color var(--transition-fast);
}

.footer-legal a:hover {
  color: var(--text-secondary);
}

/* ==================================================
   邀请码组件
   ================================================== */

.invite-code-box {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-5);
  background: rgba(255, 255, 255, 0.15);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.3);
  border-radius: var(--radius-xl);
  margin-top: var(--space-6);
}

.invite-label {
  font-size: 0.875rem;
  color: rgba(255, 255, 255, 0.8);
}

.invite-code {
  font-family: 'SF Mono', monospace;
  font-size: 1.125rem;
  font-weight: 700;
  color: white;
  letter-spacing: 0.05em;
}

.copy-btn {
  padding: var(--space-1) var(--space-3);
  background: rgba(255, 255, 255, 0.2);
  border-radius: var(--radius-md);
  font-size: 0.75rem;
  font-weight: 600;
  color: white;
  transition: all var(--transition-fast);
}

.copy-btn:hover {
  background: rgba(255, 255, 255, 0.3);
}

/* ==================================================
   滚动显示动画
   ================================================== */

.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

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

.reveal-delay-1 {
  transition-delay: 0.1s;
}

.reveal-delay-2 {
  transition-delay: 0.2s;
}

.reveal-delay-3 {
  transition-delay: 0.3s;
}

.reveal-delay-4 {
  transition-delay: 0.4s;
}