/* APEX无人机培训 - 纯静态HTML样式 */
/* 基于版本 5b7f031, v59 */

/* ===== 基础重置 ===== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  /* Stripe 风格配色 */
  --background: #F6F9FC;
  --foreground: #0A2540;
  --primary: #635BFF;
  --primary-foreground: #ffffff;
  --secondary: #F1F5F9;
  --border: #E2E8F0;
  --hero-heading: #0A2540;
  --hero-sub: #64748B;
  --card: #ffffff;
  --muted: #F1F5F9;
  --muted-foreground: #64748B;
  --accent: #FF6B00;
  --accent-cyan: #00D4FF;
  --radius: 0.75rem;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  background: linear-gradient(180deg, #F6F9FC 0%, #FFFFFF 50%, #F6F9FC 100%);
  color: var(--foreground);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
}

a {
  text-decoration: none;
  color: inherit;
}

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

img {
  max-width: 100%;
  display: block;
}

/* ===== 工具类 ===== */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1rem;
}

.container-wide {
  max-width: 1600px;
  margin: 0 auto;
  padding: 0 1rem;
}

.text-center { text-align: center; }
.text-gradient {
  background: linear-gradient(135deg, #635BFF 0%, #00D4FF 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.gap-2 { gap: 0.5rem; }
.gap-4 { gap: 1rem; }
.gap-8 { gap: 2rem; }
.flex-wrap { flex-wrap: wrap; }

.grid { display: grid; }
.grid-cols-2 { grid-template-columns: repeat(2, 1fr); }
.grid-cols-3 { grid-template-columns: repeat(3, 1fr); }
.grid-cols-4 { grid-template-columns: repeat(4, 1fr); }
.grid-cols-12 { grid-template-columns: repeat(12, 1fr); }

/* ===== 导航栏 - 现代精致风格 ===== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  background: transparent;
}

.navbar.scrolled {
  background: rgba(255, 255, 255, 0.98);
  backdrop-filter: blur(20px);
  box-shadow: 0 4px 30px rgba(0,0,0,0.1);
}

/* 两行导航栏布局 */
.navbar-top {
  width: 100%;
  padding: 0.25rem 4rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.navbar.scrolled .navbar-top {
  padding: 0.25rem 4rem;
}

.navbar-bottom {
  width: 100%;
  padding: 0.5rem 4rem;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 2rem;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  border-top: 1px solid rgba(255,255,255,0.12);
}

.navbar.scrolled .navbar-bottom {
  background: linear-gradient(180deg, #f8fafc 0%, #ffffff 100%);
  border-top: 1px solid rgba(0,0,0,0.04);
  padding: 0.5rem 4rem;
}

.navbar-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
  height: 5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.navbar.scrolled .navbar-inner {
  height: 4.75rem;
  padding: 0 1.5rem;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: white;
  font-weight: bold;
  font-size: 1.125rem;
}

.logo-icon {
  width: 2rem;
  height: 2rem;
  background: #3B82F6;
  border-radius: 0.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* 新导航栏品牌样式 - 精致设计 */
.nav-brand {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.logo-new {
  display: flex;
  align-items: center;
  gap: 0.875rem;
  text-decoration: none;
  transition: transform 0.3s ease;
}

.logo-new:hover {
  transform: scale(1.02);
}

.logo-img {
  width: 7rem;
  height: 7rem;
  object-fit: contain;
  transform: translateY(-0.1875rem);
  filter:
    drop-shadow(0 1px 2px rgba(255, 255, 255, 0.35))
    drop-shadow(0 5px 14px rgba(5, 20, 48, 0.24));
  transition: filter 0.3s ease, transform 0.3s ease;
}

.navbar.scrolled .logo-img {
  width: 7rem;
  height: 7rem;
  filter: drop-shadow(0 2px 8px rgba(18, 93, 165, 0.18));
}

.logo-text {
  display: flex;
  flex-direction: column;
  gap: 0.1875rem;
}

.logo-title {
  color: white;
  font-size: 1.5rem;
  font-weight: 700;
  line-height: 1.25;
  white-space: nowrap;
  letter-spacing: 0;
  transition: color 0.25s ease, text-shadow 0.25s ease;
  text-shadow: 0 1px 3px rgba(10, 22, 40, 0.78);
}

.navbar.scrolled .logo-title {
  font-size: 1.5rem;
  color: #0a2540;
  text-shadow: none;
}

.logo-subtitle {
  color: rgba(255, 255, 255, 0.92);
  font-family: inherit;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.075em;
  text-transform: uppercase;
  line-height: 1.25;
  white-space: nowrap;
  font-kerning: normal;
  transition: color 0.25s ease, text-shadow 0.25s ease;
  text-shadow: 0 1px 2px rgba(10, 22, 40, 0.82);
}

.navbar.scrolled .logo-subtitle {
  font-size: 0.75rem;
  color: #315f8c;
  text-shadow: none;
}

.nav-divider {
  color: rgba(255,255,255,0.4);
  font-size: 1.5rem;
  font-weight: 200;
  margin: 0 1rem;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.navbar.scrolled .nav-divider {
  color: #e2e8f0;
  font-size: 1.1rem;
  margin: 0 0.75rem;
}

.nav-slogan {
  color: rgba(255,255,255,0.95);
  font-size: 1.7rem;
  font-weight: 600;
  white-space: nowrap;
  letter-spacing: 0.08em;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0;
  text-shadow: 0 2px 4px rgba(0,0,0,0.15);
}

.navbar.scrolled .nav-slogan {
  opacity: 0;
  visibility: hidden;
  transform: translateX(-20px);
  font-size: 0;
}

.navbar.scrolled .slogan-en {
  opacity: 0;
}

@media (max-width: 1280px) {
  .nav-slogan,
  .nav-divider {
    display: none;
  }
}

@media (max-width: 1100px) {
  .logo-subtitle,
  .navbar.scrolled .logo-subtitle {
    display: none;
  }
}

@media (max-width: 1024px) {
  .logo-title,
  .navbar.scrolled .logo-title {
    font-size: 1.25rem;
  }
  .nav-slogan {
    display: none;
  }
  .nav-divider {
    display: none;
  }
}

@media (max-width: 767px) {
  .logo-new {
    gap: 0.5rem;
  }
  .logo-img,
  .navbar.scrolled .logo-img {
    width: 2.75rem;
    height: 2.25rem;
  }
  .logo-title,
  .navbar.scrolled .logo-title {
    font-size: 0.875rem;
    line-height: 1.2;
  }
}

.nav-links {
  display: none;
  align-items: center;
  gap: 0.5rem;
}

@media (min-width: 768px) {
  .nav-links {
    display: flex;
    gap: 3rem;
  }
}

/* 一级栏目增加后，平板与窄桌面保持单行且不挤出视口。 */
@media (min-width: 768px) and (max-width: 1180px) {
  .navbar-bottom,
  .navbar.scrolled .navbar-bottom {
    padding-right: 1rem;
    padding-left: 1rem;
  }

  .nav-links {
    gap: clamp(0.15rem, 0.7vw, 0.5rem);
  }

  .navbar .nav-link {
    padding-right: clamp(0.55rem, 1vw, 0.8rem);
    padding-left: clamp(0.55rem, 1vw, 0.8rem);
    white-space: nowrap;
  }
}

/* 手机端主导航 */
.mobile-menu-toggle {
  display: none;
}

@media (max-width: 767px) {
  .navbar-top,
  .navbar.scrolled .navbar-top {
    min-height: 4.25rem;
    padding: 0.5rem 1rem;
    gap: 0.75rem;
  }

  .navbar-top .btn-nav {
    display: none;
  }

  .mobile-menu-toggle {
    width: 2.75rem;
    height: 2.75rem;
    flex: 0 0 2.75rem;
    display: inline-flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0.3rem;
    padding: 0;
    color: white;
    background: rgba(15, 23, 42, 0.3);
    border: 1px solid rgba(255, 255, 255, 0.5);
    border-radius: 0.5rem;
    cursor: pointer;
  }

  .navbar.scrolled .mobile-menu-toggle {
    color: #2563eb;
    background: rgba(59, 130, 246, 0.08);
    border-color: rgba(59, 130, 246, 0.35);
  }

  .mobile-menu-toggle:focus-visible {
    outline: 3px solid rgba(96, 165, 250, 0.75);
    outline-offset: 2px;
  }

  .mobile-menu-toggle-line {
    width: 1.25rem;
    height: 2px;
    background: currentColor;
    border-radius: 999px;
    transition: transform 0.2s ease, opacity 0.2s ease;
  }

  .navbar.mobile-open .mobile-menu-toggle-line:nth-child(1) {
    transform: translateY(0.4rem) rotate(45deg);
  }

  .navbar.mobile-open .mobile-menu-toggle-line:nth-child(2) {
    opacity: 0;
  }

  .navbar.mobile-open .mobile-menu-toggle-line:nth-child(3) {
    transform: translateY(-0.4rem) rotate(-45deg);
  }

  .navbar-bottom,
  .navbar.scrolled .navbar-bottom {
    display: none;
    max-height: calc(100vh - 4.25rem);
    padding: 0.5rem 1rem 1rem;
    overflow-y: auto;
    overscroll-behavior: contain;
    background: rgba(15, 23, 42, 0.98);
    border-top: 1px solid rgba(255, 255, 255, 0.12);
    box-shadow: 0 14px 28px rgba(15, 23, 42, 0.22);
  }

  .navbar.mobile-open .navbar-bottom {
    display: block;
  }

  .navbar .nav-links.mobile-open {
    display: flex;
    flex-direction: column;
    align-items: stretch;
    gap: 0.25rem;
  }

  .navbar .nav-link {
    width: 100%;
    min-height: 2.75rem;
    justify-content: space-between;
    color: rgba(255, 255, 255, 0.95);
    white-space: nowrap;
  }

  .navbar .nav-dropdown {
    width: 100%;
  }

  .navbar .dropdown-arrow {
    display: none;
  }
}

.nav-link {
  color: rgba(255,255,255,0.95);
  font-size: 0.95rem;
  font-weight: 500;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  display: flex;
  align-items: center;
  gap: 0.25rem;
  padding: 0.625rem 1.125rem;
  text-decoration: none;
  border-radius: 0.5rem;
  position: relative;
  overflow: hidden;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0.25rem;
  left: 50%;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, #3b82f6, #60a5fa);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  transform: translateX(-50%);
  border-radius: 1px;
}

.nav-link:hover {
  color: white;
  background: rgba(255,255,255,0.12);
}

.nav-link:hover::after {
  width: 60%;
}

/* 当前页面高亮 - 底部亮光效果 */
.nav-link.active::after {
  width: 80%;
  height: 3px;
  background: linear-gradient(90deg, #3b82f6, #60a5fa, #3b82f6);
  box-shadow: 0 0 10px rgba(59, 130, 246, 0.6), 0 0 20px rgba(59, 130, 246, 0.3);
}

.nav-link.active {
  color: white;
  background: rgba(255,255,255,0.15);
}

.navbar.scrolled .nav-link.active {
  color: #3b82f6;
  background: rgba(59, 130, 246, 0.12);
}

.navbar.scrolled .nav-link.active::after {
  background: linear-gradient(90deg, #2563eb, #3b82f6, #2563eb);
  box-shadow: 0 0 10px rgba(37, 99, 235, 0.5), 0 0 20px rgba(37, 99, 235, 0.25);
}

.navbar.scrolled .nav-link {
  color: #475569;
}

.navbar.scrolled .nav-link:hover {
  color: #3b82f6;
  background: rgba(59, 130, 246, 0.08);
}

.navbar.scrolled .nav-link::after {
  background: linear-gradient(90deg, #3b82f6, #2563eb);
}

/* ===== 导航下拉菜单 ===== */
.nav-dropdown {
  position: relative;
}

.nav-dropdown .dropdown-arrow {
  width: 16px;
  height: 16px;
  transition: transform 0.3s ease;
  opacity: 0.7;
}

.nav-dropdown:hover .dropdown-arrow,
.nav-dropdown:focus-within .dropdown-arrow {
  transform: rotate(180deg);
  opacity: 1;
}

.dropdown-menu {
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%) translateY(10px);
  min-width: 200px;
  background: rgba(15, 23, 42, 0.95);
  backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 12px;
  padding: 0.5rem;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
  z-index: 1000;
}

.nav-dropdown:hover .dropdown-menu,
.nav-dropdown:focus-within .dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}

.dropdown-item {
  display: block;
  padding: 0.75rem 1rem;
  color: rgba(255, 255, 255, 0.85);
  font-size: 0.9rem;
  font-weight: 500;
  text-decoration: none;
  border-radius: 8px;
  transition: all 0.2s ease;
  white-space: nowrap;
}

.dropdown-item:hover {
  color: white;
  background: rgba(59, 130, 246, 0.2);
  transform: translateX(4px);
}

.navbar.scrolled .dropdown-menu {
  background: rgba(255, 255, 255, 0.98);
  border: 1px solid rgba(226, 232, 240, 0.8);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

.navbar.scrolled .dropdown-item {
  color: #475569;
}

.navbar.scrolled .dropdown-item:hover {
  color: #3b82f6;
  background: rgba(59, 130, 246, 0.1);
}

@media (max-width: 767px) {
  .navbar.mobile-open .nav-link,
  .navbar.mobile-open.scrolled .nav-link {
    color: rgba(255, 255, 255, 0.95);
  }

  .navbar.mobile-open .dropdown-menu,
  .navbar.mobile-open .nav-dropdown:hover .dropdown-menu,
  .navbar.mobile-open.scrolled .dropdown-menu {
    position: static;
    min-width: 0;
    margin: 0 0 0.4rem 0.75rem;
    padding: 0 0 0 0.75rem;
    transform: none;
    opacity: 1;
    visibility: visible;
    background: transparent;
    border: 0;
    border-left: 1px solid rgba(148, 163, 184, 0.35);
    border-radius: 0;
    box-shadow: none;
  }

  .navbar.mobile-open .dropdown-item,
  .navbar.mobile-open.scrolled .dropdown-item {
    padding: 0.65rem 0.75rem;
    color: rgba(226, 232, 240, 0.9);
  }
}

/* ===== 按钮样式 - 精致设计 ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.5rem 1.25rem;
  border-radius: 9999px;
  font-weight: 600;
  font-size: 0.8rem;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  white-space: nowrap;
  letter-spacing: 0.02em;
}

.btn-primary {
  background: linear-gradient(135deg, rgba(255,255,255,0.15) 0%, rgba(255,255,255,0.05) 100%);
  color: white;
  border: 1.5px solid rgba(255,255,255,0.4);
  backdrop-filter: blur(4px);
  box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.btn-primary:hover {
  background: linear-gradient(135deg, rgba(255,255,255,0.25) 0%, rgba(255,255,255,0.1) 100%);
  border-color: rgba(255,255,255,0.7);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}

.navbar.scrolled .btn-primary {
  background: linear-gradient(135deg, #3b82f6 0%, #2563eb 100%);
  border-color: transparent;
  color: white;
  box-shadow: 0 2px 8px rgba(59, 130, 246, 0.35);
}

.navbar.scrolled .btn-primary:hover {
  background: linear-gradient(135deg, #2563eb 0%, #1d4ed8 100%);
  box-shadow: 0 4px 16px rgba(59, 130, 246, 0.45);
  transform: translateY(-2px);
}

.btn-nav {
  padding: 0.75rem 1.75rem;
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: 0.5rem;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  margin-right: 2rem;
  background: transparent;
  border: 2px solid rgba(255,255,255,0.6);
  color: white;
  backdrop-filter: blur(4px);
}

.btn-nav:hover {
  background: rgba(255,255,255,0.2);
  border-color: rgba(255,255,255,0.9);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}

.navbar.scrolled .btn-nav {
  padding: 0.875rem 2rem;
  font-size: 1rem;
}

.btn-secondary {
  background: white;
  color: #0A2540;
  border: 2px solid rgba(255,255,255,0.3);
}

.btn-secondary:hover {
  background: rgba(255,255,255,0.1);
}

.btn-outline {
  background: transparent;
  color: var(--foreground);
  border: 1px solid var(--border);
}

.btn-outline:hover {
  background: var(--muted);
}

/* ===== Hero Section ===== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.hero-slides {
  position: absolute;
  inset: 0;
}

.hero-slide {
  position: absolute;
  inset: 0;
  opacity: 0;
  transition: opacity 1s ease;
}

.hero-slide.active {
  opacity: 1;
}

.hero-slide-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  animation: ken-burns 8s ease-out forwards;
}

@keyframes ken-burns {
  0% { transform: scale(1) translate(0, 0); }
  100% { transform: scale(1.1) translate(-2%, -1%); }
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, rgba(0,0,0,0.3) 0%, rgba(0,0,0,0.2) 30%, rgba(0,0,0,0.4) 60%, rgba(0,0,0,0.7) 85%, rgba(0,0,0,0.9) 100%);
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 10;
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 6rem 2rem 2rem;
  text-align: center;
  color: white;
  width: 100%;
  max-width: 100%;
}

.hero-slide-content {
  position: absolute;
  inset: 10.5rem 0 5rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 0 2rem;
  opacity: 0;
  transform: translateY(2rem);
  transition: all 0.7s ease;
  pointer-events: none;
  width: 100%;
}

@media (max-width: 767px) {
  .hero-slide-content {
    inset: 4.75rem 0 4rem;
    padding-inline: 1rem;
  }
}

.hero-slide-content.active {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

.hero-subtitle {
  font-size: 1rem;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.7);
  margin-bottom: 1.25rem;
}

.hero-title {
  font-size: 3rem;
  font-weight: 700;
  line-height: 1.2;
  max-width: 1000px;
  margin-bottom: 1.5rem;
}

.hero-title--split {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.08em;
  font-size: clamp(1.45rem, 7vw, 4.5rem);
  line-height: 1.06;
}

.hero-title-line {
  display: block;
  white-space: nowrap;
}

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

@media (min-width: 1024px) {
  .hero-title {
    font-size: 4.5rem;
  }
}

.hero-description {
  font-size: 1.25rem;
  color: rgba(255,255,255,0.85);
  max-width: 800px;
  margin-bottom: 2.5rem;
}

.hero-cta {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  justify-content: center;
}

.hero-cta .btn {
  padding: 1.125rem 2.5rem;
  font-size: 1.125rem;
}

/* 轮播控制 */
.hero-controls {
  position: absolute;
  bottom: 8rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  gap: 1rem;
  z-index: 20;
}

.hero-dots {
  display: flex;
  gap: 0.5rem;
}

.hero-dot {
  width: 2.5rem;
  height: 0.25rem;
  padding: 0;
  border: 0;
  background: rgba(255,255,255,0.3);
  border-radius: 2px;
  cursor: pointer;
  transition: all 0.3s;
}

.hero-dot.active {
  background: #FF6B00;
}

.hero-dot:focus-visible {
  outline: 3px solid #fbbf24;
  outline-offset: 4px;
}

.hero-arrow {
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 50%;
  background: rgba(255,255,255,0.1);
  border: 1px solid rgba(255,255,255,0.2);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.3s;
}

.hero-arrow:hover {
  background: rgba(255,255,255,0.2);
}

/* Hero Highlights */
.hero-highlights {
  position: relative;
  z-index: 10;
  padding: 2.5rem 2rem;
  border-top: 1px solid rgba(255,255,255,0.1);
}

.hero-highlights-inner {
  max-width: 1400px;
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 3rem;
}

.hero-highlight {
  display: flex;
  align-items: center;
  gap: 0.875rem;
  color: rgba(255,255,255,0.9);
  font-size: 1rem;
}

.hero-highlight svg {
  width: 1.5rem;
  height: 1.5rem;
}

/* ===== 通用Section样式 ===== */
.section {
  padding: 5rem 1rem;
  position: relative;
}

@media (min-width: 1024px) {
  .section {
    padding: 6rem 1rem;
  }
}

.section-title {
  font-size: 2rem;
  font-weight: 700;
  color: var(--hero-heading);
  line-height: 1.2;
  margin-bottom: 1rem;
}

@media (min-width: 640px) {
  .section-title {
    font-size: 2.5rem;
  }
}

@media (min-width: 1024px) {
  .section-title {
    font-size: 3rem;
  }
}

.section-subtitle {
  font-size: 1.25rem;
  font-weight: 700;
  background: linear-gradient(135deg, #635BFF 0%, #00D4FF 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 1rem;
}

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

.section-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  border-radius: 9999px;
  font-size: 0.875rem;
  font-weight: 500;
  margin-bottom: 1.5rem;
}

/* ===== 真实教学场景 Section ===== */
.features-section {
  background: #F6F9FC;
  overflow: hidden;
}

.features-section::before {
  content: '';
  position: absolute;
  top: 0;
  right: 33%;
  width: 500px;
  height: 500px;
  background: linear-gradient(to bottom left, rgba(99,91,255,0.04), transparent);
  border-radius: 50%;
  filter: blur(60px);
}

.features-tabs {
  display: flex;
  justify-content: center;
  gap: 1rem;
  margin-bottom: 1.5rem;
  flex-wrap: wrap;
}

.feature-tab {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 1rem 1.5rem;
  border-radius: 0.75rem;
  font-weight: 500;
  transition: background-color 0.2s ease-out, border-color 0.2s ease-out, color 0.2s ease-out, box-shadow 0.2s ease-out, transform 0.2s ease-out;
  background: white;
  color: #64748B;
  border: 1px solid #E2E8F0;
  cursor: pointer;
  position: relative;
  z-index: 10;
}

.feature-tab.active {
  background: linear-gradient(135deg, #635BFF 0%, #00D4FF 100%);
  color: white;
  box-shadow: 0 10px 25px rgba(99,91,255,0.25);
  border-color: transparent;
  transform: translateY(-2px);
  animation: feature-tab-select 320ms cubic-bezier(0.22, 1, 0.36, 1);
}

.feature-tab:hover:not(.active) {
  background: #F8FAFC;
}

.feature-tab svg {
  pointer-events: none;
}

.feature-panel[hidden] {
  display: none;
}

.feature-panel.is-entering {
  animation: feature-panel-in 380ms cubic-bezier(0.22, 1, 0.36, 1) both;
}

@keyframes feature-tab-select {
  0% {
    transform: translateY(0) scale(0.97);
  }
  58% {
    transform: translateY(-3px) scale(1.025);
  }
  100% {
    transform: translateY(-2px) scale(1);
  }
}

@keyframes feature-panel-in {
  from {
    opacity: 0.35;
    transform: translateY(8px) scale(0.995);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

.feature-panels {
  position: relative;
  min-width: 0;
}

.feature-description {
  text-align: center;
  color: #64748B;
  margin-bottom: 2rem;
  height: 3rem;
  display: flex;
  align-items: center;
  justify-content: center;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  grid-template-rows: repeat(2, 1fr);
  gap: 0.75rem;
  background: #F1F5F9;
  border: 1px solid #E2E8F0;
  border-radius: 1rem;
  padding: 0.625rem;
  position: relative;
}

.feature-image {
  position: relative;
  aspect-ratio: 16/9;
  border-radius: 0.75rem;
  overflow: hidden;
  background: #CBD5E1;
  cursor: pointer;
}

.feature-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.35s cubic-bezier(0.22, 1, 0.36, 1);
}

.feature-image:hover img {
  transform: scale(1.1);
}

.feature-image-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(10,37,64,0.6), transparent, transparent);
  opacity: 0;
  transition: opacity 0.3s;
}

.feature-image:hover .feature-image-overlay {
  opacity: 1;
}

.feature-image-label {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 0.75rem;
  color: white;
  font-size: 0.75rem;
  font-weight: 500;
  transform: translateY(100%);
  transition: transform 0.3s;
}

.feature-image:hover .feature-image-label {
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }

  .feature-tab,
  .feature-panel,
  .feature-image img,
  .feature-image-overlay,
  .feature-image-label {
    transition: none;
    animation: none;
  }

  .feature-image:hover img {
    transform: none;
  }
}

/* ===== 痛点 Section (深色) ===== */
.pain-points-section {
  background: linear-gradient(135deg, #0F172A 0%, #1E3A5F 50%, #0F172A 100%);
  color: white;
  overflow: hidden;
}

.pain-points-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: 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='0.03'%3E%3Ccircle cx='30' cy='30' r='2'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
  opacity: 0.5;
}

.pain-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 4rem;
}

@media (min-width: 1024px) {
  .pain-grid {
    grid-template-columns: 1fr 1fr;
  }
}

.pain-alert {
  background: rgba(239,68,68,0.1);
  border: 1px solid rgba(239,68,68,0.3);
  border-radius: 0.75rem;
  padding: 1rem;
  margin-bottom: 2rem;
}

.pain-alert-title {
  color: #FCA5A5;
  font-weight: 500;
  font-size: 0.875rem;
  margin-bottom: 0.5rem;
}

.pain-alert-text {
  color: #94A3B8;
  font-size: 0.875rem;
  line-height: 1.6;
}

.pain-item {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  padding: 1rem;
  background: rgba(30,41,59,0.5);
  border: 1px solid rgba(71,85,105,0.5);
  border-radius: 0.75rem;
  margin-bottom: 1rem;
  transition: all 0.3s;
}

.pain-item:hover {
  background: rgba(30,41,59,0.8);
  border-color: rgba(71,85,105,0.8);
}

.pain-icon {
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 0.5rem;
  background: linear-gradient(135deg, rgba(239,68,68,0.2), rgba(249,115,22,0.2));
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.pain-icon svg {
  width: 1.25rem;
  height: 1.25rem;
  color: #FCA5A5;
}

.pain-item h3 {
  font-weight: 600;
  margin-bottom: 0.25rem;
}

.pain-item p {
  font-size: 0.875rem;
  color: #94A3B8;
  line-height: 1.5;
}

.solution-box {
  background: linear-gradient(135deg, rgba(16,185,129,0.1), rgba(16,185,129,0.05));
  border: 1px solid rgba(16,185,129,0.3);
  border-radius: 0.75rem;
  padding: 1rem;
  margin-bottom: 2rem;
}

.solution-title {
  color: #6EE7B7;
  font-weight: 500;
  font-size: 0.875rem;
  margin-bottom: 0.5rem;
}

.solution-text {
  color: #94A3B8;
  font-size: 0.875rem;
  line-height: 1.6;
}

.person-list {
  background: linear-gradient(135deg, rgba(30,41,59,0.8), rgba(15,23,42,0.8));
  border: 1px solid rgba(71,85,105,0.5);
  border-radius: 1rem;
  overflow: hidden;
  position: relative;
}

.person-list::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 0.25rem;
  background: linear-gradient(to right, #10B981, #34D399, #10B981);
}

.person-item {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1rem;
  border-bottom: 1px solid rgba(71,85,105,0.3);
  transition: all 0.3s;
}

.person-item:last-child {
  border-bottom: none;
}

.person-item:hover {
  background: rgba(30,41,59,0.5);
  border-color: rgba(16,185,129,0.4);
}

.person-icon {
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 0.5rem;
  background: rgba(16,185,129,0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.person-icon svg {
  width: 1.25rem;
  height: 1.25rem;
  color: #34D399;
}

.person-item h4 {
  font-weight: 500;
  font-size: 0.875rem;
}

.person-item p {
  font-size: 0.75rem;
  color: #94A3B8;
}

/* ===== 课程卡片 Section ===== */
.courses-section {
  background: linear-gradient(135deg, #FAFBFC 0%, #F6F9FC 50%, #F0F4FF 100%);
  overflow: hidden;
}

.courses-grid {
  display: grid;
  grid-template-columns: repeat(1, 1fr);
  gap: 1.5rem;
}

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

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

.course-card {
  display: block;
  position: relative;
  height: 360px;
  border-radius: 1rem;
  overflow: hidden;
  cursor: pointer;
  box-shadow: 0 4px 6px -1px rgba(0,0,0,0.05);
  color: inherit;
  text-decoration: none;
}

.course-card-bg {
  position: absolute;
  inset: 0;
}

.course-card-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.7s;
}

.course-card:hover .course-card-bg img,
.course-card:focus-visible .course-card-bg img {
  transform: scale(1.1);
}

.course-card-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(0,0,0,0.9) 0%, rgba(0,0,0,0.5) 50%, rgba(0,0,0,0.2) 100%);
}

.course-card-front {
  position: absolute;
  inset: 0;
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: all 0.5s;
}

.course-card:hover .course-card-front,
.course-card:focus-visible .course-card-front {
  opacity: 0;
  transform: translateY(1rem);
}

.course-card-number {
  font-size: 3rem;
  font-weight: 700;
  color: rgba(255,255,255,0.2);
}

.course-card-tag {
  padding: 0.25rem 0.75rem;
  background: rgba(255,255,255,0.1);
  backdrop-filter: blur(4px);
  border-radius: 9999px;
  font-size: 0.75rem;
  color: rgba(255,255,255,0.7);
  border: 1px solid rgba(255,255,255,0.2);
}

.course-card h3 {
  font-size: 1.5rem;
  font-weight: 700;
  color: white;
  margin-bottom: 0.75rem;
}

.course-card-line {
  width: 3rem;
  height: 2px;
  background: rgba(255,255,255,0.3);
  margin-bottom: 0.75rem;
  transition: width 0.5s;
}

.course-card:hover .course-card-line,
.course-card:focus-visible .course-card-line {
  width: 5rem;
}

.course-card p {
  font-size: 0.875rem;
  color: rgba(255,255,255,0.6);
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.course-card-back {
  position: absolute;
  inset: 0;
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  justify-content: center;
  background: rgba(15,23,42,0.7);
  backdrop-filter: blur(12px);
  transform: translateY(100%);
  transition: transform 0.5s ease-out;
}

.course-card:hover .course-card-back,
.course-card:focus-visible .course-card-back {
  transform: translateY(0);
}

.course-card:focus-visible {
  outline: 3px solid #60a5fa;
  outline-offset: 4px;
}

.course-back-header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 0.25rem;
}

.course-back-icon {
  width: 2.75rem;
  height: 2.75rem;
  border-radius: 0.5rem;
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.2);
  display: flex;
  align-items: center;
  justify-content: center;
}

.course-back-icon svg {
  width: 1.25rem;
  height: 1.25rem;
  color: rgba(255,255,255,0.9);
}

.course-back-title {
  color: white;
  font-weight: 700;
  font-size: 1.125rem;
}

.course-back-subtitle {
  color: rgba(255,255,255,0.5);
  font-size: 0.75rem;
}

.course-back-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.5rem;
  margin: 1.25rem 0;
}

.course-back-item {
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 0.5rem;
  padding: 0.625rem;
}

.course-back-item-label {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  font-size: 0.625rem;
  color: rgba(255,255,255,0.4);
  margin-bottom: 0.125rem;
}

.course-back-item-label svg {
  width: 0.75rem;
  height: 0.75rem;
}

.course-back-item-value {
  font-size: 0.75rem;
  color: rgba(255,255,255,0.9);
  font-weight: 500;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.course-back-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.375rem;
  margin-bottom: 1.25rem;
}

.course-back-tag {
  padding: 0.25rem 0.625rem;
  background: rgba(255,255,255,0.1);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 9999px;
  font-size: 0.625rem;
  color: rgba(255,255,255,0.8);
}

.course-back-btn {
  width: 100%;
  padding: 0.75rem;
  background: white;
  color: #0F172A;
  border-radius: 0.75rem;
  font-weight: 600;
  font-size: 0.875rem;
  transition: all 0.2s;
}

.course-back-btn:hover {
  background: rgba(255,255,255,0.9);
  transform: scale(1.02);
}

/* ===== 八大保障 Section ===== */
.guarantees-section {
  background: #F6F9FC;
  overflow: hidden;
}

.guarantees-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.25rem;
}

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

.guarantee-card {
  position: relative;
  background: white;
  border: 1px solid #F1F5F9;
  border-radius: 1rem;
  padding: 1.5rem;
  text-align: center;
  cursor: pointer;
  overflow: hidden;
  transition: all 0.7s ease;
  opacity: 1;
  transform: translateY(0);
}

.guarantee-card.animation-pending {
  opacity: 0;
  transform: translateY(40px);
}

.guarantee-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(99,91,255,0) 0%, transparent 50%, rgba(0,212,255,0) 100%);
  transition: all 0.5s;
}

.guarantee-card:hover::before {
  background: linear-gradient(135deg, rgba(99,91,255,0.05) 0%, transparent 50%, rgba(0,212,255,0.05) 100%);
}

.guarantee-card::after {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 0.25rem;
  background: linear-gradient(to right, #635BFF, #00D4FF);
  border-radius: 0 0 2px 2px;
  transition: width 0.5s;
}

.guarantee-card:hover::after {
  width: 100%;
}

.guarantee-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 20px 40px -15px rgba(99,91,255,0.15);
}

.guarantee-icon {
  width: 3.5rem;
  height: 3.5rem;
  border-radius: 0.75rem;
  background: linear-gradient(135deg, #635BFF 0%, #00D4FF 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1.25rem;
  box-shadow: 0 10px 25px rgba(99,91,255,0.25);
  transition: all 0.3s;
}

.guarantee-card:hover .guarantee-icon {
  transform: translateY(-4px);
  box-shadow: 0 15px 35px rgba(99,91,255,0.35);
}

.guarantee-icon svg {
  width: 1.75rem;
  height: 1.75rem;
  color: white;
  transition: transform 0.3s;
}

.guarantee-card:hover .guarantee-icon svg {
  transform: scale(1.1);
}

.guarantee-card h3 {
  font-size: 1.125rem;
  font-weight: 700;
  color: #0A2540;
  margin-bottom: 0.5rem;
  transition: all 0.3s;
}

.guarantee-card:hover h3 {
  background: linear-gradient(135deg, #635BFF 0%, #00D4FF 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.guarantee-card p {
  font-size: 0.875rem;
  color: #64748B;
  line-height: 1.5;
  transition: color 0.3s;
}

.guarantee-card:hover p {
  color: #0A2540;
}

.guarantee-number {
  position: absolute;
  top: 0.75rem;
  right: 0.75rem;
  font-size: 1.5rem;
  font-weight: 700;
  color: #F1F5F9;
  transition: all 0.3s;
}

.guarantee-card:hover .guarantee-number {
  color: rgba(99,91,255,0.1);
  transform: scale(1.1);
}

/* ===== 左/右布局 Section ===== */
.chess-section {
  background: linear-gradient(135deg, #FFFFFF 0%, #F8FAFC 100%);
  overflow: hidden;
}

.reverse-chess-section {
  background: linear-gradient(225deg, #F5F7FA 0%, #FAFBFC 50%, #FFFFFF 100%);
  overflow: hidden;
}

.chess-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 3rem;
  align-items: center;
}

@media (min-width: 1024px) {
  .chess-grid {
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
  }
}

.chess-video {
  border-radius: 1.5rem;
  overflow: hidden;
  box-shadow: 0 25px 50px -12px rgba(59,130,246,0.2);
}

.chess-video video,
.chess-video img {
  width: 100%;
  aspect-ratio: 16/9;
  object-fit: cover;
}

.chess-content h2 {
  font-size: 2rem;
  font-weight: 700;
  color: #0A2540;
  line-height: 1.3;
  margin-bottom: 1.5rem;
}

@media (min-width: 640px) {
  .chess-content h2 {
    font-size: 2.25rem;
  }
}

.chess-content h2 span {
  color: #3B82F6;
}

.reverse-chess-section .chess-content h2 span {
  color: #F97316;
}

.chess-content p {
  font-size: 1.125rem;
  color: #64748B;
  line-height: 1.7;
  margin-bottom: 2rem;
}

.chess-highlights {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
  margin-bottom: 2rem;
}

.chess-highlight {
  padding: 1rem;
  background: white;
  border: 1px solid #E2E8F0;
  border-radius: 0.75rem;
  transition: all 0.3s;
}

.chess-highlight:hover {
  box-shadow: 0 10px 25px rgba(0,0,0,0.1);
  border-color: #3B82F6;
}

.reverse-chess-section .chess-highlight:hover {
  border-color: #F97316;
}

.chess-highlight svg {
  width: 1.5rem;
  height: 1.5rem;
  color: #3B82F6;
  margin-bottom: 0.5rem;
}

.reverse-chess-section .chess-highlight svg {
  color: #F97316;
}

.chess-highlight-title {
  font-weight: 600;
  color: #0A2540;
  font-size: 0.875rem;
}

.chess-highlight-sub {
  font-size: 0.75rem;
  color: #94A3B8;
}

/* ===== 全国布局 Section ===== */
.global-section {
  background: #F6F9FC;
  overflow: hidden;
}

.global-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  align-items: center;
}

@media (min-width: 1024px) {
  .global-grid {
    grid-template-columns: 5fr 7fr;
    gap: 3rem;
  }
}

.global-cities {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.75rem;
  margin: 2rem 0;
}

.global-city {
  padding: 1rem;
  background: white;
  border: 1px solid #F1F5F9;
  border-radius: 0.75rem;
  cursor: pointer;
  transition: all 0.3s;
  box-shadow: 0 1px 3px rgba(0,0,0,0.05);
}

.global-city:hover {
  transform: scale(1.02);
  box-shadow: 0 4px 20px rgba(0,0,0,0.08);
}

.global-city-header {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.25rem;
}

.global-city-dot {
  width: 0.5rem;
  height: 0.5rem;
  border-radius: 50%;
}

.global-city-dot.hq { background: #FF6B00; }
.global-city-dot.branch { background: #00D4FF; }
.global-city-dot.partner { background: #635BFF; }

.global-city-name {
  font-weight: 600;
  color: #0A2540;
  font-size: 0.875rem;
}

.global-city-status {
  font-size: 0.75rem;
  color: #94A3B8;
}

.global-stats {
  display: flex;
  gap: 2rem;
  margin: 2rem 0;
}

.global-stat {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.global-stat-icon {
  width: 3rem;
  height: 3rem;
  border-radius: 0.75rem;
  display: flex;
  align-items: center;
  justify-content: center;
}

.global-stat-icon.purple { background: rgba(99,91,255,0.1); }
.global-stat-icon.cyan { background: rgba(0,212,255,0.1); }

.global-stat-icon svg {
  width: 1.5rem;
  height: 1.5rem;
}

.global-stat-icon.purple svg { color: #635BFF; }
.global-stat-icon.cyan svg { color: #00D4FF; }

.global-stat-value {
  font-size: 1.5rem;
  font-weight: 700;
  color: #0A2540;
}

.global-stat-label {
  font-size: 0.875rem;
  color: #94A3B8;
}

.global-map {
  position: relative;
  width: 100%;
  height: 550px;
  background-size: contain;
  background-position: center top;
  background-repeat: no-repeat;
  background-color: #F6F9FC;
}

@media (min-width: 1024px) {
  .global-map {
    height: 680px;
  }
}

@media (min-width: 1280px) {
  .global-map {
    height: 720px;
  }
}

/* ===== 项目案例时间轴 ===== */
.timeline-section {
  background: #F6F9FC;
  overflow: hidden;
}

.timeline-wrapper {
  position: relative;
  padding: 4rem 0;
}

.timeline-scroll {
  overflow-x: auto;
  scrollbar-width: none;
  -ms-overflow-style: none;
  padding: 2rem 0;
}

.timeline-scroll::-webkit-scrollbar {
  display: none;
}

.timeline-content {
  position: relative;
  min-width: 1200px;
  padding: 0 5rem;
}

.timeline-svg {
  position: absolute;
  top: 50%;
  left: 0;
  width: 100%;
  height: 8rem;
  transform: translateY(-50%);
  pointer-events: none;
}

.timeline-projects {
  position: relative;
  display: flex;
  align-items: center;
  gap: 8rem;
  min-width: 1200px;
}

.timeline-project {
  position: relative;
  flex-shrink: 0;
  cursor: pointer;
}

.timeline-project:nth-child(odd) {
  margin-top: -2rem;
}

.timeline-project:nth-child(even) {
  margin-top: 3rem;
}

.timeline-project-line {
  position: absolute;
  left: 50%;
  width: 1px;
  height: 50px;
  background: linear-gradient(to bottom, rgba(0,212,255,0.5), transparent);
  transform: translateX(-50%);
}

.timeline-project:nth-child(odd) .timeline-project-line {
  top: 100%;
}

.timeline-project:nth-child(even) .timeline-project-line {
  bottom: 100%;
  background: linear-gradient(to top, rgba(0,212,255,0.5), transparent);
}

.timeline-year {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  font-size: 0.875rem;
  font-weight: 700;
  white-space: nowrap;
  background: linear-gradient(135deg, #635BFF 0%, #00D4FF 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.timeline-project:nth-child(odd) .timeline-year {
  bottom: calc(100% + 60px);
}

.timeline-project:nth-child(even) .timeline-year {
  top: calc(100% + 60px);
}

.timeline-card {
  position: relative;
  width: 11rem;
  height: 7rem;
  border-radius: 1rem;
  overflow: hidden;
  border: 2px solid rgba(255,255,255,0.2);
  box-shadow: 0 10px 25px rgba(0,0,0,0.1);
  transition: all 0.3s;
  z-index: 10;
}

.timeline-card:hover {
  transform: scale(1.15);
  border-color: #00D4FF;
  box-shadow: 0 20px 40px rgba(0,212,255,0.3);
}

.timeline-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.timeline-card-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(0,0,0,0.9), rgba(0,0,0,0.4), transparent);
}

.timeline-card-icon {
  position: absolute;
  top: 0.5rem;
  right: 0.5rem;
  font-size: 1.25rem;
}

.timeline-card-content {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 0.75rem;
}

.timeline-card-category {
  font-size: 0.625rem;
  color: rgba(255,255,255,0.6);
  margin-bottom: 0.125rem;
}

.timeline-card-title {
  font-size: 0.875rem;
  font-weight: 700;
  color: white;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.timeline-card-dot {
  position: absolute;
  left: 50%;
  width: 0.75rem;
  height: 0.75rem;
  background: #1E293B;
  border: 2px solid rgba(0,212,255,0.5);
  border-radius: 50%;
  transform: translateX(-50%);
  transition: all 0.3s;
}

.timeline-project:nth-child(odd) .timeline-card-dot {
  top: calc(100% + 6px);
}

.timeline-project:nth-child(even) .timeline-card-dot {
  bottom: calc(100% + 6px);
}

.timeline-card:hover + .timeline-card-dot,
.timeline-project:hover .timeline-card-dot {
  background: #00D4FF;
  transform: translateX(-50%) scale(1.5);
}

.timeline-detail {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  width: 14rem;
  background: white;
  border: 1px solid #E2E8F0;
  border-radius: 0.75rem;
  box-shadow: 0 20px 40px rgba(0,0,0,0.15);
  overflow: hidden;
  opacity: 0;
  visibility: hidden;
  transition: all 0.25s;
  z-index: 100;
}

.timeline-project:hover .timeline-detail {
  opacity: 1;
  visibility: visible;
}

.timeline-project:nth-child(odd) .timeline-detail {
  bottom: calc(100% + 10px);
}

.timeline-project:nth-child(even) .timeline-detail {
  top: calc(100% + 10px);
}

.timeline-detail-arrow {
  position: absolute;
  left: 50%;
  width: 0.625rem;
  height: 0.625rem;
  background: white;
  border-left: 1px solid #E2E8F0;
  border-top: 1px solid #E2E8F0;
  transform: translateX(-50%) rotate(45deg);
}

.timeline-project:nth-child(odd) .timeline-detail-arrow {
  bottom: -5px;
}

.timeline-project:nth-child(even) .timeline-detail-arrow {
  top: -5px;
  transform: translateX(-50%) rotate(-135deg);
}

.timeline-detail-image {
  position: relative;
  height: 6rem;
  overflow: hidden;
}

.timeline-detail-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.timeline-detail-image-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(0,0,0,0.7), rgba(0,0,0,0.2), transparent);
}

.timeline-detail-tag {
  position: absolute;
  bottom: 0.5rem;
  left: 0.75rem;
  padding: 0.125rem 0.5rem;
  background: #635BFF;
  color: white;
  font-size: 0.625rem;
  font-weight: 500;
  border-radius: 9999px;
}

.timeline-detail-content {
  padding: 0.75rem;
}

.timeline-detail-title {
  font-size: 1rem;
  font-weight: 700;
  color: #0A2540;
  margin-bottom: 0.375rem;
}

.timeline-detail-desc {
  font-size: 0.75rem;
  color: #64748B;
  line-height: 1.5;
  margin-bottom: 0.75rem;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.timeline-detail-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.625rem;
  color: #64748B;
  margin-bottom: 0.75rem;
}

.timeline-detail-meta span {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.timeline-detail-btn {
  width: 100%;
  padding: 0.5rem;
  background: linear-gradient(135deg, #635BFF 0%, #00D4FF 100%);
  color: white;
  border-radius: 0.5rem;
  font-size: 0.75rem;
  font-weight: 500;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.375rem;
}

.timeline-nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 3rem;
  height: 3rem;
  background: white;
  border: 1px solid #E2E8F0;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.3s;
  z-index: 20;
  box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}

.timeline-nav:hover {
  background: #F8FAFC;
}

.timeline-nav.prev { left: 1rem; }
.timeline-nav.next { right: 1rem; }

/* ===== 学员评价 Section ===== */
.testimonials-section {
  background: linear-gradient(225deg, #FAFBFC 0%, #F5F7FA 50%, #F0F4F8 100%);
  overflow: hidden;
}

.testimonials-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
  align-items: stretch;
}

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

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

.testimonial-card {
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(12px);
  border: 1px solid rgba(226,232,240,0.8);
  border-radius: 1rem;
  padding: 1.5rem;
  box-shadow: 0 4px 6px -1px rgba(0,0,0,0.05);
  transition: all 0.3s;
  display: flex;
  flex-direction: column;
  height: 100%;
}

.testimonial-card:hover {
  box-shadow: 0 10px 25px rgba(59,130,246,0.1);
}

.testimonial-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: 1rem;
}

.testimonial-avatar {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.testimonial-avatar-img {
  width: 3rem;
  height: 3rem;
  border-radius: 50%;
  background: linear-gradient(135deg, #3B82F6, #1D4ED8);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: 700;
  font-size: 1.125rem;
}

.testimonial-avatar h3 {
  font-weight: 600;
  color: #0A2540;
}

.testimonial-avatar p {
  font-size: 0.875rem;
  color: #64748B;
}

.testimonial-quote {
  width: 2rem;
  height: 2rem;
  color: #DBEAFE;
}

.testimonial-stars {
  display: flex;
  gap: 0.25rem;
  margin-bottom: 0.75rem;
}

.testimonial-stars svg {
  width: 1rem;
  height: 1rem;
  fill: #FB923C;
  color: #FB923C;
}

.testimonial-content {
  font-size: 0.875rem;
  color: #64748B;
  line-height: 1.6;
  margin-bottom: 1rem;
  flex: 1;
}

.testimonial-footer {
  padding-top: 1rem;
  border-top: 1px solid #F1F5F9;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.75rem;
  margin-top: auto;
}

.testimonial-course {
  color: #3B82F6;
  font-weight: 500;
}

.testimonial-date {
  color: #94A3B8;
}

/* ===== 公司动态 Section ===== */
.news-section {
  background: linear-gradient(180deg, #F0F4F8 0%, #F8FAFC 50%, #FFFFFF 100%);
  overflow: hidden;
}

.news-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}

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

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

.news-card {
  background: white;
  border: 1px solid #F1F5F9;
  border-radius: 1rem;
  overflow: hidden;
  box-shadow: 0 1px 3px rgba(0,0,0,0.05);
  transition: all 0.5s;
}

.news-card:hover {
  box-shadow: 0 20px 40px rgba(0,0,0,0.1);
}

.news-image {
  position: relative;
  height: 14rem;
  overflow: hidden;
}

.news-image-gradient {
  position: absolute;
  inset: 0;
  opacity: 0.1;
  transition: opacity 0.5s;
}

.news-card:hover .news-image-gradient {
  opacity: 0.2;
}

.news-image-content {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}

.news-image-icon {
  width: 5rem;
  height: 5rem;
  border-radius: 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 10px 25px rgba(0,0,0,0.1);
  transform: scale(1);
  transition: transform 0.5s;
}

.news-card:hover .news-image-icon {
  transform: scale(1.1);
}

.news-image-icon svg {
  width: 2.5rem;
  height: 2.5rem;
  color: white;
}

.news-tag {
  position: absolute;
  top: 1rem;
  left: 1rem;
  padding: 0.25rem 0.75rem;
  border-radius: 9999px;
  font-size: 0.75rem;
  font-weight: 500;
  color: white;
  box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}

.news-content {
  padding: 1.5rem;
}

.news-date {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.875rem;
  color: #94A3B8;
  margin-bottom: 0.75rem;
}

.news-date svg {
  width: 1rem;
  height: 1rem;
}

.news-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: #0A2540;
  margin-bottom: 0.75rem;
  line-height: 1.4;
  transition: color 0.3s;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.news-card:hover .news-title {
  color: #635BFF;
}

.news-summary {
  font-size: 0.875rem;
  color: #64748B;
  line-height: 1.6;
  margin-bottom: 1rem;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.news-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.875rem;
  font-weight: 500;
  color: #635BFF;
  transition: gap 0.3s;
}

.news-card:hover .news-link {
  gap: 0.75rem;
}

.news-link svg {
  width: 1rem;
  height: 1rem;
}

/* ===== CTA & Footer ===== */
.cta-section {
  background: linear-gradient(135deg, #0A2540 0%, #0F3154 50%, #143656 100%);
  color: white;
  position: relative;
  overflow: hidden;
}

.cta-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 25% 0%, rgba(255,255,255,0.05) 0%, transparent 50%),
              radial-gradient(circle at 75% 100%, rgba(99,91,255,0.2) 0%, transparent 50%);
}

.cta-content {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 800px;
  margin: 0 auto;
}

.cta-content h2 {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 1rem;
}

@media (min-width: 640px) {
  .cta-content h2 {
    font-size: 2.5rem;
  }
}

.cta-content p {
  font-size: 1.125rem;
  color: rgba(255,255,255,0.7);
  margin-bottom: 2rem;
}

.cta-buttons {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 1.5rem;
}

.cta-buttons .btn {
  padding: 1.25rem 2.5rem;
}

.cta-note {
  font-size: 0.875rem;
  color: rgba(255,255,255,0.5);
}

.cta-note span {
  background: linear-gradient(135deg, #635BFF 0%, #00D4FF 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  font-weight: 700;
}

/* CTA Official Section */
.cta-section {
  background: linear-gradient(135deg, #0F172A 0%, #1E293B 50%, #0F172A 100%);
  position: relative;
  overflow: hidden;
}

.cta-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: 
    radial-gradient(circle at 20% 50%, rgba(59, 130, 246, 0.1) 0%, transparent 50%),
    radial-gradient(circle at 80% 50%, rgba(245, 158, 11, 0.05) 0%, transparent 50%);
  pointer-events: none;
}

.cta-wrapper {
  max-width: 1280px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

.cta-official-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  background: rgba(245, 158, 11, 0.15);
  border: 1px solid rgba(245, 158, 11, 0.3);
  border-radius: 2rem;
  font-size: 0.875rem;
  font-weight: 600;
  color: #60a5fa;
  margin-bottom: 2rem;
}

.cta-official-badge svg {
  width: 1rem;
  height: 1rem;
}

.cta-container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.cta-left {
  text-align: left;
}

.cta-title {
  font-size: 2.75rem;
  font-weight: 700;
  color: #F8FAFC;
  line-height: 1.2;
  margin-bottom: 1.5rem;
}

.cta-title span {
  background: linear-gradient(135deg, #3b82f6 0%, #60a5fa 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.cta-subtitle {
  font-size: 1.125rem;
  color: #94A3B8;
  line-height: 1.8;
  margin-bottom: 2.5rem;
}

.cta-highlights {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.cta-highlight {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.cta-highlight-icon {
  width: 48px;
  height: 48px;
  background: rgba(59, 130, 246, 0.15);
  border: 1px solid rgba(59, 130, 246, 0.3);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #3B82F6;
  flex-shrink: 0;
}

.cta-highlight-text {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.cta-highlight-text strong {
  color: #F8FAFC;
  font-size: 1rem;
  font-weight: 600;
}

.cta-highlight-text span {
  color: #64748B;
  font-size: 0.875rem;
}

.cta-right {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.cta-form-card {
  background: rgba(255, 255, 255, 0.05);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 1.5rem;
  padding: 2rem;
}

.cta-form-title {
  font-size: 1.5rem;
  font-weight: 700;
  color: #F8FAFC;
  margin-bottom: 0.5rem;
}

.cta-form-subtitle {
  font-size: 0.875rem;
  color: #64748B;
  margin-bottom: 1.5rem;
}

.cta-form {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.cta-input-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.cta-label {
  font-size: 0.875rem;
  font-weight: 500;
  color: #CBD5E1;
}

.cta-input {
  width: 100%;
  padding: 0.875rem 1rem;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 0.75rem;
  color: #F8FAFC;
  font-size: 0.9375rem;
  transition: all 0.3s;
}

.cta-input:focus {
  outline: none;
  border-color: #3B82F6;
  background: rgba(255, 255, 255, 0.12);
}

.cta-input::placeholder {
  color: #64748B;
}

.cta-submit-btn {
  width: 100%;
  padding: 1rem;
  background: linear-gradient(135deg, #3b82f6 0%, #60a5fa 100%);
  border: none;
  border-radius: 0.75rem;
  color: #0F172A;
  font-size: 1rem;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.3s;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  margin-top: 0.5rem;
}

.cta-submit-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 30px rgba(245, 158, 11, 0.3);
}

.cta-contact-info {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-top: 1.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.cta-contact-link {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: #94A3B8;
  font-size: 0.875rem;
  text-decoration: none;
  transition: color 0.3s;
}

.cta-contact-link:hover {
  color: #60a5fa;
}

.cta-trust-badges {
  display: flex;
  justify-content: center;
  gap: 1.5rem;
  flex-wrap: wrap;
}

.trust-badge {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  background: rgba(255, 255, 255, 0.05);
  border-radius: 2rem;
  font-size: 0.8125rem;
  color: #94A3B8;
}

.trust-badge svg {
  flex-shrink: 0;
}

@media (max-width: 1024px) {
  .cta-container {
    grid-template-columns: 1fr;
    gap: 3rem;
  }
  
  .cta-title {
    font-size: 2.25rem;
  }
  
  .cta-left {
    text-align: center;
  }
  
  .cta-highlights {
    align-items: center;
  }
  
  .cta-highlight {
    justify-content: center;
  }
}

@media (max-width: 640px) {
  .cta-title {
    font-size: 1.75rem;
  }
  
  .cta-form-card {
    padding: 1.5rem;
  }
}

/* Footer */
.footer {
  background: #0F172A;
  color: #94A3B8;
  padding: 4rem 1rem 2rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2rem;
  margin-bottom: 3rem;
}

@media (min-width: 768px) {
  .footer-grid {
    grid-template-columns: repeat(5, 1fr);
  }
}

.footer-brand {
  grid-column: span 2;
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 1rem;
}

.footer-logo-icon {
  width: 2.5rem;
  height: 2.5rem;
  background: #0A2540;
  border-radius: 0.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
}

.footer-logo-text {
  color: white;
}

.footer-logo-text div:first-child {
  font-weight: 700;
  font-size: 1.125rem;
}

.footer-logo-text div:last-child {
  font-size: 0.75rem;
  color: #64748B;
}

.footer-brand p {
  font-size: 0.875rem;
  line-height: 1.6;
  max-width: 300px;
  margin-bottom: 1rem;
}

.footer-phone {
  color: #FB923C;
  font-weight: 600;
}

.footer-column h3 {
  color: white;
  font-weight: 600;
  margin-bottom: 1rem;
  font-size: 0.875rem;
}

.footer-column ul {
  list-style: none;
}

.footer-column li {
  margin-bottom: 0.5rem;
}

.footer-column a {
  font-size: 0.875rem;
  transition: color 0.2s;
}

.footer-column a:hover {
  color: white;
}

.footer-bottom {
  border-top: 1px solid #1E293B;
  padding-top: 2rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  align-items: center;
  text-align: center;
}

@media (min-width: 640px) {
  .footer-bottom {
    flex-direction: row;
    justify-content: space-between;
    text-align: left;
  }
}

.footer-bottom p {
  font-size: 0.875rem;
}

.footer-bottom-links {
  display: flex;
  gap: 1.5rem;
}

.footer-bottom-links a {
  font-size: 0.875rem;
  transition: color 0.2s;
}

.footer-bottom-links a:hover {
  color: white;
}

/* ===== 完整页脚样式 ===== */
.site-footer {
  background: #0f172a;
  color: #94a3b8;
  font-size: 0.875rem;
}

.footer-top {
  border-bottom: 1px solid #1e293b;
  padding: 1.5rem 0;
}

.footer-top-content {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 1rem;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
}

.footer-brand-horizontal {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.footer-brand-horizontal img {
  height: 80px;
  width: auto;
}

.footer-brand-info h3 {
  color: white;
  font-size: 1.125rem;
  font-weight: 600;
  margin: 0;
}

.footer-brand-info p {
  color: #64748b;
  font-size: 0.75rem;
  margin: 0.25rem 0 0;
}

.footer-top-phone {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: #fb923c;
  font-size: 1.5rem;
  font-weight: 700;
}

.footer-top-phone svg {
  width: 28px;
  height: 28px;
}

.footer-main {
  max-width: 1280px;
  margin: 0 auto;
  padding: 3rem 1rem;
}

.footer-columns {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2rem;
}

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

@media (min-width: 1024px) {
  .footer-columns {
    grid-template-columns: 1.2fr 1.2fr 1fr 1.4fr;
    column-gap: 3rem;
  }
}

.footer-col h4 {
  color: white;
  font-size: 0.9375rem;
  font-weight: 600;
  margin-bottom: 1.25rem;
}

.footer-col ul {
  list-style: none;
}

.footer-col li {
  margin-bottom: 0.625rem;
}

.footer-col a {
  color: #94a3b8;
  transition: color 0.2s;
  display: inline-block;
}

.footer-col a:hover {
  color: #3b82f6;
}

.footer-contact-list {
  list-style: none;
}

.footer-contact-list li {
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
  margin-bottom: 0.875rem;
  line-height: 1.5;
}

.footer-contact-list svg {
  width: 18px;
  height: 18px;
  color: #3b82f6;
  flex-shrink: 0;
  margin-top: 0.125rem;
}

.footer-qr-section {
  text-align: center;
}

.footer-qr-code {
  width: 100px;
  height: 100px;
  background: white;
  border-radius: 0.5rem;
  margin: 0 auto 0.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.footer-qr-code img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.footer-qr-label {
  font-size: 0.75rem;
  color: #64748b;
}

/* 社交媒体网格 */
.footer-social-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.75rem;
}

.footer-qr-item {
  text-align: center;
}

.footer-qr-code-small {
  width: 64px;
  height: 64px;
  background: white;
  border-radius: 0.375rem;
  margin: 0 auto 0.375rem;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.footer-qr-code-small img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* 课程导航和项目合作左对齐 */
.footer-col ul {
  text-align: left;
}

.footer-bottom-bar {
  background: #0a0f1a;
  padding: 1.25rem 0;
}

.footer-bottom-content {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 1rem;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.8125rem;
}

.footer-bottom-content a {
  color: #64748b;
  transition: color 0.2s;
}

.footer-bottom-content a:hover {
  color: #3b82f6;
}

/* ===== 装饰三点 ===== */
.decor-dots {
  display: none;
  align-items: center;
}

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

.decor-dots svg {
  width: 100px;
  height: 36px;
}

/* ===== 标题包装器 ===== */
.section-header {
  text-align: center;
  margin-bottom: 3rem;
}

.section-header-row {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  margin-bottom: 1rem;
}

@media (min-width: 1024px) {
  .section-header-row {
    gap: 1.5rem;
  }
}

/* ===== 动画类 ===== */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.fade-in-up {
  animation: fadeInUp 0.6s ease forwards;
}

@keyframes pulse {
  0%, 100% { opacity: 0.5; }
  50% { opacity: 1; }
}

.animate-pulse {
  animation: pulse 2s ease-in-out infinite;
}

.animate-pulse-delay-1 {
  animation: pulse 2s ease-in-out infinite;
  animation-delay: 0.3s;
}

.animate-pulse-delay-2 {
  animation: pulse 2s ease-in-out infinite;
  animation-delay: 0.6s;
}

/* ===== 响应式调整 ===== */
@media (max-width: 768px) {
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
    grid-template-rows: repeat(4, 1fr);
  }
  
  .global-cities {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .global-map {
    height: 350px;
  }
  
  .timeline-content {
    padding: 0 1rem;
  }
  
  .guarantees-grid {
    grid-template-columns: 1fr;
  }
  
  .chess-highlights {
    grid-template-columns: 1fr;
  }
}

/* ===== 隐藏滚动条 ===== */
.scrollbar-hide {
  -ms-overflow-style: none;
  scrollbar-width: none;
}

.scrollbar-hide::-webkit-scrollbar {
  display: none;
}

/* ===== 视频容器 ===== */
.video-container {
  position: relative;
  border-radius: 1.5rem;
  overflow: hidden;
  box-shadow: 0 25px 50px -12px rgba(59,130,246,0.2);
}

.video-container video {
  width: 100%;
  aspect-ratio: 16/9;
  object-fit: cover;
}

/* ===== 课程与训练环境轮播 ===== */
.media-carousel {
  position: relative;
  border-radius: 1.5rem;
  overflow: hidden;
  background: #0a2540;
  box-shadow: 0 25px 50px -12px rgba(59, 130, 246, 0.22);
  isolation: isolate;
}

.media-carousel-orange {
  box-shadow: 0 25px 50px -12px rgba(249, 115, 22, 0.2);
}

.media-carousel-stage {
  position: relative;
  aspect-ratio: 16 / 9;
  overflow: hidden;
}

.media-carousel-slide {
  position: absolute;
  inset: 0;
  margin: 0;
  opacity: 0;
  visibility: hidden;
  transform: scale(1.015);
  transition:
    opacity 420ms cubic-bezier(0.22, 1, 0.36, 1),
    transform 650ms cubic-bezier(0.22, 1, 0.36, 1),
    visibility 0s linear 420ms;
}

.media-carousel-slide.active {
  opacity: 1;
  visibility: visible;
  transform: scale(1);
  transition-delay: 0s;
  z-index: 1;
}

.media-carousel-slide::after {
  content: '';
  position: absolute;
  inset: 42% 0 0;
  background: linear-gradient(to bottom, transparent, rgba(4, 17, 35, 0.86));
  pointer-events: none;
}

.media-carousel-slide img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.media-carousel-slide figcaption {
  position: absolute;
  left: clamp(1rem, 3vw, 1.5rem);
  right: 10.5rem;
  bottom: clamp(1rem, 3vw, 1.5rem);
  z-index: 2;
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: baseline;
  gap: 0.25rem 0.65rem;
  color: #fff;
}

.media-carousel-slide figcaption span {
  grid-row: 1 / 3;
  align-self: center;
  font-size: 0.75rem;
  font-weight: 700;
  color: #93c5fd;
}

.media-carousel-orange .media-carousel-slide figcaption span {
  color: #fdba74;
}

.media-carousel-slide figcaption strong {
  font-size: clamp(1rem, 2vw, 1.2rem);
  line-height: 1.25;
}

.media-carousel-slide figcaption small {
  color: rgba(255, 255, 255, 0.84);
  font-size: 0.78rem;
  line-height: 1.45;
}

.media-carousel-controls {
  position: absolute;
  right: 1rem;
  bottom: 1rem;
  z-index: 3;
  display: flex;
  align-items: center;
  gap: 0.2rem;
  padding: 0.25rem;
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: 999px;
  background: rgba(5, 21, 43, 0.74);
}

.media-carousel-arrow,
.media-carousel-dots button {
  appearance: none;
  border: 0;
  background: transparent;
  color: #fff;
  cursor: pointer;
}

.media-carousel-arrow {
  width: 2.25rem;
  height: 2.25rem;
  border-radius: 50%;
  font-size: 1rem;
  line-height: 1;
  transition: background-color 180ms ease, transform 120ms ease;
}

.media-carousel-arrow:hover {
  background: rgba(255, 255, 255, 0.16);
}

.media-carousel-arrow:active {
  transform: scale(0.94);
}

.media-carousel-dots {
  display: flex;
  align-items: center;
}

.media-carousel-dots button {
  position: relative;
  width: 1.25rem;
  height: 2.25rem;
}

.media-carousel-dots button::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0.38rem;
  height: 0.38rem;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.48);
  transform: translate(-50%, -50%);
  transition: width 220ms cubic-bezier(0.22, 1, 0.36, 1), background-color 180ms ease;
}

.media-carousel-dots button.active::after {
  width: 0.9rem;
  border-radius: 999px;
  background: #60a5fa;
}

.media-carousel-orange .media-carousel-dots button.active::after {
  background: #fb923c;
}

.media-carousel :is(button, [tabindex]):focus-visible {
  outline: 2px solid #fff;
  outline-offset: 2px;
}

@media (max-width: 639px) {
  .media-carousel-slide figcaption {
    right: 1rem;
    bottom: 1rem;
  }

  .media-carousel-slide figcaption small {
    display: none;
  }

  .media-carousel-controls {
    top: 0.75rem;
    right: 0.75rem;
    bottom: auto;
  }
}

@media (prefers-reduced-motion: reduce) {
  .media-carousel-slide {
    transform: none;
    transition: none;
  }
}

/* Animations */
@keyframes float {
  0%, 100% { transform: translateY(0px); }
  50% { transform: translateY(-10px); }
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.6; }
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

.animate-fade-in {
  animation: fadeIn 0.6s ease-out forwards;
}

/* Global Reach Section Styles */
.global-reach-section .stat-number {
  font-variant-numeric: tabular-nums;
}

/* FAQ Section Styles */
.faq-item.active .faq-question {
  background: linear-gradient(135deg, rgba(99,91,255,0.05) 0%, rgba(118,75,162,0.05) 100%);
}

.faq-question:hover {
  background: rgba(99,91,255,0.02);
}

/* ===== Stats Section - 高档大气数据展示 ===== */
.stats-section {
  padding: 5rem 0 6rem;
  background: #FFFFFF;
  position: relative;
  overflow: hidden;
}

/* 点阵网格背景 - 细微连线效果 */
.stats-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: 
    /* 细微水平连线 */
    linear-gradient(to right, rgba(99, 91, 255, 0.020) 0.8px, transparent 0.8px),
    /* 细微垂直连线 */
    linear-gradient(to bottom, rgba(99, 91, 255, 0.020) 0.8px, transparent 0.8px),
    /* 点阵 */
    radial-gradient(circle, rgba(99, 91, 255, 0.3) 2px, transparent 2px);
  background-size: 
    36px 36px,
    36px 36px,
    36px 36px;
  background-position: 
    18px 18px,
    18px 18px,
    0 0;
  pointer-events: none;
  /* 上下渐变遮罩 - 中间清晰，上下轻微渐隐 */
  -webkit-mask-image: linear-gradient(to bottom, 
    rgba(0, 0, 0, 0.4) 0%,
    rgba(0, 0, 0, 0.8) 10%,
    rgba(0, 0, 0, 1) 20%,
    rgba(0, 0, 0, 1) 80%,
    rgba(0, 0, 0, 0.8) 90%,
    rgba(0, 0, 0, 0.4) 100%);
  mask-image: linear-gradient(to bottom, 
    rgba(0, 0, 0, 0.4) 0%,
    rgba(0, 0, 0, 0.8) 10%,
    rgba(0, 0, 0, 1) 20%,
    rgba(0, 0, 0, 1) 80%,
    rgba(0, 0, 0, 0.8) 90%,
    rgba(0, 0, 0, 0.4) 100%);
}

/* 居中大标题 */
.stats-header {
  text-align: center;
  margin-bottom: 5rem;
  position: relative;
  z-index: 1;
}

.stats-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  background: rgba(99,91,255,0.08);
  border-radius: 9999px;
  color: #635BFF;
  font-size: 0.875rem;
  font-weight: 500;
  margin-bottom: 1.25rem;
}

.stats-title {
  font-size: 2.25rem;
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 1rem;
  color: #0A2540;
}

@media (min-width: 640px) {
  .stats-title {
    font-size: 2.75rem;
  }
}

@media (min-width: 1024px) {
  .stats-title {
    font-size: 3.25rem;
  }
}

.stats-subtitle {
  font-size: 1rem;
  color: #64748B;
  max-width: 600px;
  margin: 0 auto;
  line-height: 1.7;
}

/* 数据展示区域 */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 3rem;
  max-width: 1200px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

@media (max-width: 1024px) {
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 3rem 2rem;
  }
  
  .stats-section {
    padding: 4rem 0 5rem;
  }
}

@media (max-width: 480px) {
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem 1.5rem;
  }
}

.stat-card {
  text-align: center;
  position: relative;
  z-index: 1;
}

.stat-icon-wrap {
  width: 48px;
  height: 48px;
  margin: 0 auto 1.25rem;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #3B82F6;
}

.stat-icon-wrap svg {
  width: 28px;
  height: 28px;
}

.stat-number {
  font-size: 3rem;
  font-weight: 700;
  line-height: 1;
  margin-bottom: 0.5rem;
  color: #334155;
  font-variant-numeric: tabular-nums;
}

@media (min-width: 1024px) {
  .stat-number {
    font-size: 3.5rem;
  }
}

.stat-label {
  font-size: 1rem;
  font-weight: 600;
  color: #334155;
  margin-bottom: 0.25rem;
}

.stat-sublabel {
  font-size: 0.8125rem;
  color: #94A3B8;
}

/* ===== 立即报名弹窗 ===== */
.modal {
  display: flex;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 9999;
  align-items: center;
  justify-content: center;
  padding: 2rem;
  visibility: hidden;
  opacity: 0;
  transition: visibility 0s linear 0.3s, opacity 0.3s ease;
}

.modal.active {
  visibility: visible;
  opacity: 1;
  transition: visibility 0s linear 0s, opacity 0.3s ease;
}

.modal-content {
  position: relative;
  background: white;
  border-radius: 1.25rem;
  max-width: 480px;
  width: 90%;
  max-height: 85vh;
  overflow-y: auto;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25), 0 0 0 1px rgba(255, 255, 255, 0.1);
  transform: scale(0.8) translateY(30px);
  opacity: 0;
  transition: transform 0.4s cubic-bezier(0.34, 1.56, 0.64, 1), opacity 0.3s ease;
}

.modal.active .modal-content {
  transform: scale(1) translateY(0);
  opacity: 1;
  transition: transform 0.4s cubic-bezier(0.34, 1.56, 0.64, 1), opacity 0.3s ease;
}

.modal-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(15, 23, 42, 0.6);
  backdrop-filter: blur(8px);
  opacity: 0;
  transition: opacity 0.3s ease;
}

.modal.active .modal-overlay {
  opacity: 1;
}

.modal-close {
  position: absolute;
  top: 1rem;
  right: 1rem;
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 50%;
  border: none;
  background: rgba(0, 0, 0, 0.05);
  color: #64748B;
  font-size: 1.5rem;
  cursor: pointer;
  transition: all 0.2s;
  display: flex;
  align-items: center;
  justify-content: center;
}

.modal-close:hover {
  background: rgba(0, 0, 0, 0.1);
  color: #334155;
}

.modal-header {
  padding: 2rem 2rem 1.5rem;
  text-align: center;
  background: linear-gradient(135deg, #3B82F6 0%, #1D4ED8 100%);
  color: white;
}

.modal-title {
  font-size: 1.75rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
}

.modal-title span {
  background: linear-gradient(90deg, #FEF08A 0%, #FDE047 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.modal-subtitle {
  font-size: 0.95rem;
  opacity: 0.95;
  line-height: 1.6;
  max-width: 480px;
  margin: 0 auto;
}

.modal-body {
  padding: 1.5rem 2rem 2rem;
}

.contact-info {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
  margin-bottom: 1.5rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid #E2E8F0;
}

.contact-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.8125rem;
  color: #475569;
  white-space: nowrap;
  overflow: hidden;
}

.contact-item span {
  display: inline;
  color: #475569;
}

.contact-item svg {
  color: #3B82F6;
  flex-shrink: 0;
}

.form-section {
  background: #F8FAFC;
  border-radius: 1rem;
  padding: 1.5rem;
}

.form-title {
  font-size: 1.125rem;
  font-weight: 600;
  color: #1E293B;
  margin-bottom: 1.25rem;
  text-align: center;
}

.form-group {
  margin-bottom: 1rem;
}

.form-group label {
  display: block;
  font-size: 0.875rem;
  font-weight: 500;
  color: #374151;
  margin-bottom: 0.375rem;
}

.form-group input,
.form-group select,
.form-input {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 1px solid #9CA3AF;
  border-radius: 0.5rem;
  font-size: 0.9375rem;
  transition: all 0.2s;
  background: white;
  color: #1f2937;
  box-sizing: border-box;
  display: block;
  min-height: 44px;
}

.form-group input:focus,
.form-group select:focus,
.form-input:focus {
  outline: none;
  border-color: #3B82F6;
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.form-input::placeholder {
  color: #9ca3af;
}

.btn-submit {
  width: 100%;
  padding: 1rem;
  font-size: 1.05rem;
  font-weight: 600;
  margin-top: 0.5rem;
  background: linear-gradient(90deg, #3B82F6 0%, #1D4ED8 100%);
  border: none;
  border-radius: 0.5rem;
  color: white;
  cursor: pointer;
  transition: all 0.2s;
}

.btn-submit:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(59, 130, 246, 0.4);
}

/* 复选框组样式 */
.checkbox-group {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.5rem;
}

.checkbox-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem;
  background: white;
  border: 1px solid #E5E7EB;
  border-radius: 0.375rem;
  cursor: pointer;
  transition: all 0.15s;
  font-size: 0.875rem;
  color: #374151;
}

.checkbox-item:hover {
  border-color: #3B82F6;
  background: #F0F7FF;
}

.checkbox-item input[type="checkbox"] {
  width: 1rem;
  height: 1rem;
  accent-color: #3B82F6;
  cursor: pointer;
}

.checkbox-item span {
  user-select: none;
}

@media (max-width: 640px) {
  .checkbox-group {
    grid-template-columns: 1fr;
  }
  .modal {
    padding: 1rem;
  }
  
  .modal-content {
    border-radius: 1rem;
  }
  
  .modal-header {
    padding: 1.5rem 1.5rem 1rem;
  }
  
  .modal-title {
    font-size: 1.5rem;
  }
  
  .modal-body {
    padding: 1rem 1.5rem 1.5rem;
  }
  
  .contact-info {
    grid-template-columns: 1fr;
    gap: 0.75rem;
  }
  
  .form-section {
    padding: 1rem;
  }
}

/* ===== 课程页面CTA区域样式 ===== */
.course-cta-section {
  background: linear-gradient(135deg, #0F172A 0%, #1E293B 50%, #0F172A 100%);
  position: relative;
  overflow: hidden;
  padding: 5rem 0;
}

.course-cta-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at top right, rgba(59, 130, 246, 0.08) 0%, transparent 50%),
              radial-gradient(ellipse at bottom left, rgba(99, 91, 255, 0.05) 0%, transparent 50%);
  pointer-events: none;
}

.course-cta-wrapper {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr 420px;
  gap: 5rem;
  align-items: center;
  max-width: 1200px;
  margin: 0 auto;
}

/* 左侧主内容 */
.course-cta-main {
  text-align: left;
}

.course-cta-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  background: rgba(245, 158, 11, 0.1);
  border: 1px solid rgba(245, 158, 11, 0.3);
  border-radius: 2rem;
  font-size: 0.8125rem;
  font-weight: 600;
  color: #FBBF24;
  margin-bottom: 1.5rem;
}

.course-cta-title {
  font-size: 2.75rem;
  font-weight: 700;
  margin-bottom: 1rem;
  line-height: 1.15;
  color: #F8FAFC;
  letter-spacing: -0.02em;
}

.course-cta-title .text-blue {
  background: linear-gradient(135deg, #60A5FA 0%, #3B82F6 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.course-cta-desc {
  font-size: 1.125rem;
  color: #94A3B8;
  margin-bottom: 2.5rem;
  max-width: 480px;
  line-height: 1.6;
}

/* 特性列表 */
.course-features {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-bottom: 2.5rem;
}

.course-feature-item {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.feature-icon {
  width: 44px;
  height: 44px;
  border-radius: 0.75rem;
  background: linear-gradient(135deg, #3B82F6 0%, #1D4ED8 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  flex-shrink: 0;
}

.feature-text {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.feature-text strong {
  font-size: 1rem;
  font-weight: 600;
  color: #F1F5F9;
}

.feature-text span {
  font-size: 0.875rem;
  color: #64748B;
}

/* 按钮区域 */
.course-cta-actions {
  margin-bottom: 2rem;
}

.course-cta-actions .btn-blue {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  background: linear-gradient(135deg, #3B82F6 0%, #2563EB 100%);
  color: white;
  border: none;
  padding: 1rem 2rem;
  font-size: 1rem;
  font-weight: 600;
  border-radius: 0.75rem;
  transition: all 0.3s ease;
  box-shadow: 0 4px 20px rgba(59, 130, 246, 0.3);
}

.course-cta-actions .btn-blue:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(59, 130, 246, 0.4);
}

/* 底部标签 */
.course-cta-tags {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.cta-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  padding: 0.5rem 0.875rem;
  background: rgba(30, 41, 59, 0.6);
  border: 1px solid rgba(71, 85, 105, 0.4);
  border-radius: 2rem;
  font-size: 0.8125rem;
  color: #94A3B8;
}

.cta-tag svg {
  color: #3B82F6;
}

/* 右侧推荐卡片 */
.course-recommend-card {
  background: rgba(30, 41, 59, 0.4);
  backdrop-filter: blur(20px);
  border: 1px solid rgba(71, 85, 105, 0.4);
  border-radius: 1.5rem;
  padding: 2rem;
}

.recommend-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: #F8FAFC;
  margin-bottom: 0.5rem;
}

.recommend-subtitle {
  font-size: 0.875rem;
  color: #64748B;
  margin-bottom: 1.5rem;
}

.recommend-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-bottom: 1.5rem;
}

.recommend-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.25rem;
  padding: 1rem;
  background: rgba(15, 23, 42, 0.5);
  border: 1px solid rgba(71, 85, 105, 0.3);
  border-radius: 1rem;
  text-decoration: none;
  transition: all 0.3s ease;
}

.recommend-item:hover {
  background: rgba(15, 23, 42, 0.7);
  border-color: rgba(59, 130, 246, 0.3);
  transform: translateX(4px);
}

.recommend-info {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  flex: 1;
  min-width: 0;
}

.recommend-name {
  font-size: 0.9375rem;
  font-weight: 600;
  color: #F1F5F9;
}

.recommend-desc {
  font-size: 0.8125rem;
  color: #64748B;
}

.recommend-label {
  flex-shrink: 0;
  min-width: 5.5rem;
  padding-left: 1rem;
  border-left: 1px solid rgba(96, 165, 250, 0.28);
  color: #93C5FD;
  font-size: 0.75rem;
  font-weight: 650;
  line-height: 1.35;
  text-align: right;
}

.recommend-footer {
  padding-top: 1.25rem;
  border-top: 1px solid rgba(71, 85, 105, 0.3);
}

.consult-stats {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.875rem;
  color: #64748B;
}

.consult-stats svg {
  color: #3B82F6;
}

.consult-stats strong {
  color: #3B82F6;
  font-weight: 600;
}

/* 响应式 */
@media (max-width: 1024px) {
  .course-cta-wrapper {
    grid-template-columns: 1fr;
    gap: 3rem;
  }
  
  .course-cta-main {
    text-align: center;
  }
  
  .course-cta-desc {
    margin-left: auto;
    margin-right: auto;
  }
  
  .course-features {
    align-items: center;
  }
  
  .course-cta-tags {
    justify-content: center;
  }
  
  .course-recommend-card {
    max-width: 480px;
    margin: 0 auto;
  }
}

@media (max-width: 640px) {
  .course-cta-section {
    padding: 3rem 0;
  }
  
  .course-cta-title {
    font-size: 2rem;
  }
  
  .course-cta-wrapper {
    gap: 2rem;
  }

  .recommend-item {
    gap: 0.875rem;
  }

  .recommend-label {
    min-width: auto;
    padding-left: 0.75rem;
    font-size: 0.6875rem;
  }
}

/* 响应式 */
@media (max-width: 1024px) {
  .course-cta-wrapper {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }
  
  .course-cta-main {
    text-align: center;
  }
  
  .course-cta-desc {
    margin-left: auto;
    margin-right: auto;
  }
  
  .consult-steps {
    justify-content: center;
  }
  
  .course-cta-actions {
    justify-content: center;
  }
  
  .trust-indicators {
    justify-content: center;
  }
  
  .hot-courses-card {
    max-width: 400px;
    margin: 0 auto;
  }
}

@media (max-width: 640px) {
  .course-cta-section {
    padding: 3rem 0;
  }
  
  .course-cta-title {
    font-size: 1.75rem;
  }
  
  .consult-steps {
    gap: 0.5rem;
  }
  
  .step-arrow {
    width: 12px;
  }
  
  .course-cta-actions {
    flex-direction: column;
    width: 100%;
  }
  
  .course-cta-actions .btn {
    width: 100%;
    justify-content: center;
  }
}

/* Hallmark · pre-emit critique: P5 H5 E5 S5 R5 V4 */
/* ===== C01-C07：键盘焦点与交互可达性 ===== */
:where(
  a[href],
  button,
  input,
  select,
  textarea,
  [role="button"],
  [role="link"],
  [tabindex]:not([tabindex="-1"])
):focus-visible {
  outline: 3px solid #ffffff;
  outline-offset: 3px;
  box-shadow: 0 0 0 6px #2563eb;
}

.faq-question:focus-visible {
  outline-offset: -3px;
  box-shadow: inset 0 0 0 3px #2563eb;
}

[role="button"],
[role="link"] {
  cursor: pointer;
}
.consultation-consent {
  display: flex;
  align-items: flex-start;
  gap: 0.55rem;
  margin: 0.75rem 0;
  color: inherit;
  font-size: 0.82rem;
  line-height: 1.55;
  text-align: left;
}

.consultation-consent input {
  flex: 0 0 auto;
  width: 1rem;
  height: 1rem;
  margin-top: 0.14rem;
  accent-color: #2563eb;
}

.consultation-consent a {
  margin: 0 0.18rem;
  color: #2563eb;
  text-decoration: underline;
  text-underline-offset: 0.15em;
}

.consultation-consent input:focus-visible {
  outline: 2px solid #2563eb;
  outline-offset: 2px;
}