/* ============================================
   赢科国际教育官网 - 主样式表
   主色: #003c92 (蓝) / #ce131c (红)
   自定义组件类统一使用 wk- 前缀，避免与Bootstrap冲突
   ============================================ */

:root {
  --primary-blue: #003c92;
  --primary-blue-dark: #002d6e;
  --primary-blue-light: #1a5bb8;
  --primary-red: #ce131c;
  --primary-red-dark: #a80f17;
  --accent-gold: #d4a843;
  --bg-light: #f5f7fa;
  --bg-white: #ffffff;
  --text-dark: #1a1a2e;
  --text-gray: #5a6472;
  --text-light: #8a94a3;
  --border-color: #e2e8f0;
  --shadow-sm: 0 2px 8px rgba(0, 60, 146, 0.08);
  --shadow-md: 0 4px 16px rgba(0, 60, 146, 0.12);
  --shadow-lg: 0 8px 32px rgba(0, 60, 146, 0.16);
  --transition: all 0.3s ease;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Helvetica, Arial,
    sans-serif;
  color: var(--text-dark);
  background: var(--bg-white);
  line-height: 1.7;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  color: var(--text-dark);
  line-height: 1.3;
  margin-top: 0;
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }

p {
  margin-top: 0;
  margin-bottom: 1rem;
}

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

a:hover {
  color: var(--primary-red);
}

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

/* 覆盖Bootstrap container，统一最大宽度和内边距 */
.container {
  max-width: 1200px !important;
  margin: 0 auto;
  padding: 0 20px !important;
}

/* ========== 顶部导航 ========== */
.wk-navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.98);
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}

.wk-navbar.scrolled {
  background: rgba(255, 255, 255, 0.98);
  box-shadow: var(--shadow-md);
}

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

.wk-navbar-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
}

.wk-navbar-brand img {
  height: 44px;
  width: auto;
}

.brand-slogan {
  font-size: 13px;
  color: var(--text-gray);
  font-weight: 500;
  letter-spacing: 1px;
  border-left: 1px solid var(--border-color);
  padding-left: 12px;
  margin-left: 2px;
  white-space: nowrap;
}

.wk-navbar-nav {
  display: flex;
  align-items: center;
  list-style: none;
  gap: 4px;
  margin: 0;
  padding: 0;
}

.wk-navbar-nav .wk-nav-item {
  position: relative;
}

.wk-navbar-nav .wk-nav-link {
  display: block;
  padding: 8px 14px;
  color: var(--text-dark);
  font-size: 15px;
  font-weight: 500;
  border-radius: 6px;
  transition: var(--transition);
  white-space: nowrap;
  text-decoration: none;
}

.wk-navbar-nav .wk-nav-link:hover,
.wk-navbar-nav .wk-nav-link.active {
  color: var(--primary-blue);
  background: rgba(0, 60, 146, 0.06);
}

.wk-navbar-nav .wk-nav-link.active {
  color: var(--primary-red);
  font-weight: 600;
}

/* 下拉菜单 */
.wk-dropdown-menu {
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 180px;
  background: #fff;
  border-radius: 8px;
  box-shadow: var(--shadow-lg);
  padding: 8px 0;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: var(--transition);
  list-style: none;
  margin: 0;
  z-index: 1001;
}

.wk-nav-item.dropdown:hover .wk-dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.wk-dropdown-menu .wk-dropdown-item {
  display: block;
  padding: 10px 20px;
  color: var(--text-dark);
  font-size: 14px;
  transition: var(--transition);
  text-decoration: none;
}

.wk-dropdown-menu .wk-dropdown-item:hover {
  background: rgba(0, 60, 146, 0.06);
  color: var(--primary-blue);
  padding-left: 24px;
}

/* 移动端菜单按钮 */
.wk-navbar-toggler {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}

.wk-navbar-toggler span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text-dark);
  margin: 5px 0;
  transition: var(--transition);
}

/* ========== Hero 区域 ========== */
.hero {
  position: relative;
  min-height: 560px;
  display: flex;
  align-items: center;
  background:
    /* 底部加深，确保文字清晰 */
    linear-gradient(to top, rgba(0, 15, 40, 0.5) 0%, transparent 50%),
    /* 整体蓝色遮罩，统一色调 */
    linear-gradient(135deg, rgba(0, 45, 110, 0.85) 0%, rgba(0, 60, 146, 0.75) 50%, rgba(26, 91, 184, 0.7) 100%),
    /* 背景图 */
    url("https://oss.systemdiv.com/win-c/banner-bg.jpg"),
    /* 基础渐变兜底 */
    linear-gradient(135deg, #002d6e 0%, #003c92 45%, #1a5bb8 100%);
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  overflow: hidden;
  padding-top: 72px;
}

.hero::before {
  content: "";
  position: absolute;
  top: -120px;
  right: -80px;
  width: 450px;
  height: 450px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(212, 168, 67, 0.12) 0%, transparent 65%);
  pointer-events: none;
}

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

.hero-content {
  max-width: 680px;
  color: #fff;
}

.hero-badge {
  display: inline-block;
  padding: 6px 16px;
  background: rgba(255, 255, 255, 0.15);
  border: 1px solid rgba(255, 255, 255, 0.3);
  border-radius: 30px;
  font-size: 14px;
  margin-bottom: 20px;
  backdrop-filter: blur(10px);
  color: #fff;
}

.hero h1 {
  color: #fff;
  font-size: 3rem;
  margin-bottom: 16px;
  font-weight: 800;
}

.hero h1 span {
  color: var(--accent-gold);
}

.hero-subtitle {
  font-size: 1.25rem;
  color: rgba(255, 255, 255, 0.92);
  margin-bottom: 30px;
  line-height: 1.8;
}

.hero-buttons {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

/* 按钮 */
.wk-btn {
  display: inline-block;
  padding: 14px 32px;
  border-radius: 8px;
  font-size: 16px;
  font-weight: 600;
  text-align: center;
  cursor: pointer;
  border: none;
  transition: var(--transition);
  text-decoration: none;
  line-height: 1.5;
}

.wk-btn-primary {
  background: var(--primary-red);
  color: #fff;
}

.wk-btn-primary:hover {
  background: var(--primary-red-dark);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(206, 19, 28, 0.4);
}

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

.wk-btn-outline:hover {
  background: #fff;
  color: var(--primary-blue);
  border-color: #fff;
}

.wk-btn-blue {
  background: var(--primary-blue);
  color: #fff;
}

.wk-btn-blue:hover {
  background: var(--primary-blue-dark);
  color: #fff;
  transform: translateY(-2px);
}

/* Hero 数据统计 */
.hero-stats {
  display: flex;
  gap: 40px;
  margin-top: 40px;
  flex-wrap: wrap;
}

.hero-stat {
  color: #fff;
}

.hero-stat-number {
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--accent-gold);
  line-height: 1;
}

.hero-stat-label {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.85);
  margin-top: 6px;
}

/* ========== 通用 Section ========== */
.section {
  padding: 80px 0;
}

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

.section-header {
  text-align: center;
  margin-bottom: 50px;
}

.section-header .section-tag {
  display: inline-block;
  padding: 4px 14px;
  background: rgba(0, 60, 146, 0.08);
  color: var(--primary-blue);
  border-radius: 20px;
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 12px;
  letter-spacing: 1px;
}

.section-header h2 {
  font-size: 2.2rem;
  margin-bottom: 12px;
}

.section-header h2::after {
  content: "";
  display: block;
  width: 60px;
  height: 4px;
  background: linear-gradient(90deg, var(--primary-blue), var(--primary-red));
  margin: 16px auto 0;
  border-radius: 2px;
}

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

/* ========== 课程卡片 ========== */
.course-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.course-card {
  background: #fff;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  border: 1px solid var(--border-color);
}

.course-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}

.course-card-header {
  padding: 28px 24px 20px;
  background: linear-gradient(135deg, var(--primary-blue) 0%, var(--primary-blue-light) 100%);
  color: #fff;
  position: relative;
  overflow: hidden;
  min-height: 140px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.course-card-header.language {
  background: linear-gradient(135deg, var(--primary-red) 0%, #e8454f 100%);
}

.course-card-header::after {
  content: "";
  position: absolute;
  top: -30px;
  right: -30px;
  width: 100px;
  height: 100px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 50%;
}

.course-card-header h3 {
  color: #fff;
  font-size: 1.5rem;
  margin-bottom: 4px;
}

.course-card-header .course-en {
  font-size: 13px;
  opacity: 0.85;
  letter-spacing: 1px;
  color: #fff;
}

.course-card-body {
  padding: 24px;
}

.course-card-body p {
  color: var(--text-gray);
  font-size: 14px;
  margin-bottom: 16px;
  line-height: 1.7;
}

.course-features {
  list-style: none;
  margin-bottom: 20px;
  padding: 0;
}

.course-features li {
  padding: 6px 0;
  font-size: 14px;
  color: var(--text-dark);
  display: flex;
  align-items: center;
  gap: 8px;
}

.course-features li::before {
  content: "✓";
  color: var(--primary-red);
  font-weight: 700;
  font-size: 14px;
}

.course-card-footer {
  padding: 0 24px 24px;
}

.course-card-footer .wk-btn {
  width: 100%;
  padding: 10px;
  font-size: 14px;
}

/* ========== 优势特色 ========== */
.advantage-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}

.advantage-card {
  background: #fff;
  border-radius: 12px;
  padding: 36px 28px;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  border-top: 4px solid var(--primary-blue);
}

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

.advantage-icon {
  width: 60px;
  height: 60px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--primary-blue), var(--primary-blue-light));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  color: #fff;
  margin-bottom: 20px;
}

.advantage-card h3 {
  font-size: 1.25rem;
  margin-bottom: 12px;
  color: var(--primary-blue);
}

.advantage-card p {
  color: var(--text-gray);
  font-size: 14px;
  line-height: 1.8;
  margin-bottom: 0;
}

.advantage-card ul {
  list-style: none;
  margin-top: 12px;
  padding: 0;
}

.advantage-card ul li {
  padding: 4px 0;
  font-size: 14px;
  color: var(--text-gray);
  padding-left: 18px;
  position: relative;
}

.advantage-card ul li::before {
  content: "•";
  color: var(--primary-red);
  font-weight: 700;
  position: absolute;
  left: 0;
}

/* ========== 流程步骤 ========== */
.process-timeline {
  position: relative;
  padding: 20px 0;
}

.process-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  position: relative;
}

.process-step {
  text-align: center;
  position: relative;
}

.process-step-number {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary-blue), var(--primary-blue-light));
  color: #fff;
  font-size: 1.4rem;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
  position: relative;
  z-index: 2;
  box-shadow: 0 4px 12px rgba(0, 60, 146, 0.3);
}

.process-step h4 {
  font-size: 1.05rem;
  margin-bottom: 8px;
  color: var(--primary-blue);
}

.process-step p {
  font-size: 13px;
  color: var(--text-gray);
  line-height: 1.7;
  margin-bottom: 0;
}

/* ========== 师资团队 ========== */
.teacher-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.teacher-card {
  background: #fff;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  border: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
}

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

.teacher-photo {
  width: 100%;
  aspect-ratio: 3 / 4;
  background: linear-gradient(135deg, var(--primary-blue), var(--primary-blue-light));
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  position: relative;
  flex-shrink: 0;
}

.teacher-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.teacher-photo-placeholder {
  color: rgba(255, 255, 255, 0.9);
  font-size: 3rem;
  font-weight: 800;
}

.teacher-info {
  padding: 20px;
  text-align: center;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.teacher-info h4 {
  font-size: 1.1rem;
  margin-bottom: 4px;
  color: var(--primary-blue);
}

.teacher-subject {
  font-size: 13px;
  color: var(--primary-red);
  font-weight: 600;
  margin-bottom: 10px;
}

.teacher-desc {
  font-size: 13px;
  color: var(--text-gray);
  line-height: 1.7;
  text-align: center;
  margin-bottom: 0;
  margin-top: auto;
}

/* ========== 高分学员榜 ========== */
.highscore-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
  margin-bottom: 50px;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

.highscore-stat {
  text-align: center;
  padding: 30px 20px;
  background: linear-gradient(135deg, #fff 0%, #f8faff 100%);
  border-radius: 12px;
  border: 1px solid var(--border-color);
  transition: var(--transition);
}

.highscore-stat:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: rgba(0, 60, 146, 0.2);
}

.highscore-stat-number {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--primary-blue);
  line-height: 1;
  margin-bottom: 8px;
}

.highscore-stat-number .percent {
  font-size: 1.5rem;
  color: var(--accent-gold);
}

.highscore-stat-label {
  font-size: 14px;
  color: var(--text-gray);
  font-weight: 500;
}

/* 高分学员榜Tab切换 */
.highscore-tabs {
  display: flex;
  justify-content: center;
  gap: 12px;
  margin-bottom: 30px;
}

.highscore-tab {
  padding: 10px 32px;
  border: 2px solid var(--border-color);
  background: #fff;
  color: var(--text-gray);
  font-size: 15px;
  font-weight: 600;
  border-radius: 30px;
  cursor: pointer;
  transition: var(--transition);
  font-family: inherit;
}

.highscore-tab:hover {
  border-color: var(--primary-blue);
  color: var(--primary-blue);
  transform: translateY(-2px);
}

.highscore-tab.active {
  background: var(--primary-blue);
  border-color: var(--primary-blue);
  color: #fff;
  box-shadow: 0 4px 12px rgba(0, 60, 146, 0.25);
}

.highscore-tab-content {
  display: none;
}

.highscore-tab-content.active {
  display: block;
  animation: highscoreFadeIn 0.35s ease;
}

@keyframes highscoreFadeIn {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.highscore-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.highscore-card {
  background: linear-gradient(135deg, #8b0000 0%, #ce131c 50%, #a0000a 100%);
  border-radius: 10px;
  padding: 24px 16px;
  text-align: center;
  color: #fff;
  position: relative;
  overflow: hidden;
  transition: var(--transition);
  border: 2px solid #d4a843;
}

.highscore-card::before {
  content: "";
  position: absolute;
  top: -30px;
  right: -30px;
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background: rgba(212, 168, 67, 0.15);
}

.highscore-card::after {
  content: "";
  position: absolute;
  bottom: -20px;
  left: -20px;
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.05);
}

.highscore-card:hover {
  transform: translateY(-5px) scale(1.02);
  box-shadow: 0 10px 30px rgba(206, 19, 28, 0.3);
}

.highscore-card-subject {
  font-size: 12px;
  color: rgba(255, 255, 255, 0.8);
  margin-bottom: 8px;
  letter-spacing: 1px;
  position: relative;
  z-index: 1;
}

.highscore-card-score {
  font-size: 2rem;
  font-weight: 800;
  color: #ffd700;
  line-height: 1.2;
  margin-bottom: 6px;
  position: relative;
  z-index: 1;
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.highscore-card-score .unit {
  font-size: 0.9rem;
  color: rgba(255, 215, 0, 0.8);
  font-weight: 500;
}

.highscore-card-name {
  font-size: 15px;
  font-weight: 600;
  color: #fff;
  position: relative;
  z-index: 1;
}

.highscore-card-badge {
  position: absolute;
  top: 8px;
  right: 8px;
  font-size: 16px;
  z-index: 1;
}

/* ========== 学员说 ========== */
.testimonial-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.testimonial-card {
  background: #fff;
  border-radius: 12px;
  padding: 32px 28px;
  border: 1px solid var(--border-color);
  position: relative;
  transition: var(--transition);
  box-shadow: var(--shadow-sm);
}

.testimonial-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(0, 60, 146, 0.2);
}

.testimonial-quote {
  font-size: 3rem;
  color: var(--primary-blue);
  opacity: 0.15;
  line-height: 1;
  margin-bottom: 10px;
  font-family: Georgia, serif;
}

.testimonial-content {
  font-size: 15px;
  color: var(--text-gray);
  line-height: 1.9;
  margin-bottom: 24px;
  font-style: italic;
  min-height: 110px;
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: 14px;
  padding-top: 20px;
  border-top: 1px solid var(--border-color);
}

.testimonial-avatar {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary-blue), var(--primary-blue-light));
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 18px;
  font-weight: 700;
  flex-shrink: 0;
}

.testimonial-info h4 {
  font-size: 15px;
  margin-bottom: 2px;
  color: var(--text-dark);
}

.testimonial-info p {
  font-size: 13px;
  color: var(--text-light);
  margin: 0;
}

.testimonial-stars {
  color: #ffc107;
  font-size: 14px;
  margin-bottom: 4px;
}

/* ========== 教学环境 ========== */
.campus-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.campus-item {
  border-radius: 10px;
  overflow: hidden;
  aspect-ratio: 4 / 3;
  position: relative;
  cursor: pointer;
}

.campus-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.campus-item:hover img {
  transform: scale(1.08);
}

.campus-item-overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 30px 16px 12px;
  background: linear-gradient(transparent, rgba(0, 0, 0, 0.7));
  color: #fff;
  font-size: 13px;
  opacity: 0;
  transition: var(--transition);
}

.campus-item:hover .campus-item-overlay {
  opacity: 1;
}

/* ========== 数据见证 ========== */
.stats-showcase {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 40px;
  align-items: center;
  background: linear-gradient(135deg, var(--primary-blue-dark), var(--primary-blue));
  border-radius: 20px;
  padding: 50px;
  color: #fff;
}

.stats-showcase-main {
  text-align: center;
  padding: 20px;
  border-right: 1px solid rgba(255, 255, 255, 0.15);
}

.stats-big-number {
  font-size: 4.5rem;
  font-weight: 800;
  line-height: 1;
  color: var(--accent-gold);
  margin-bottom: 8px;
}

.stats-big-number .percent {
  font-size: 2.5rem;
}

.stats-big-label {
  font-size: 1.2rem;
  font-weight: 600;
  margin-bottom: 12px;
}

.stats-big-desc {
  font-size: 14px;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.85);
  margin: 0;
}

.stats-showcase-side {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.stats-side-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
}

.stats-side-icon {
  flex-shrink: 0;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.15);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
}

.stats-side-item h4 {
  color: #fff;
  font-size: 1rem;
  margin-bottom: 4px;
}

.stats-side-item p {
  color: rgba(255, 255, 255, 0.8);
  font-size: 14px;
  line-height: 1.6;
  margin: 0;
}

/* ========== FAQ常见问题 ========== */
.faq-container {
  max-width: 860px;
  margin: 0 auto;
}

.faq-item {
  background: #fff;
  border-radius: 10px;
  margin-bottom: 14px;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-color);
  overflow: hidden;
  transition: var(--transition);
}

.faq-item:hover {
  box-shadow: var(--shadow-md);
  border-color: rgba(0, 60, 146, 0.15);
}

.faq-item.active {
  border-color: var(--primary-blue);
  box-shadow: 0 4px 16px rgba(0, 60, 146, 0.12);
}

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

.faq-question:hover {
  background: rgba(0, 60, 146, 0.03);
}

.faq-item.active .faq-question {
  background: rgba(0, 60, 146, 0.05);
}

.faq-q-text {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-dark);
  line-height: 1.5;
  flex: 1;
}

.faq-icon {
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--primary-blue);
  color: #fff;
  font-size: 18px;
  font-weight: 400;
  line-height: 1;
  transition: transform 0.3s ease, background 0.3s ease;
}

.faq-item.active .faq-icon {
  background: var(--primary-red);
  transform: rotate(45deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease, padding 0.35s ease;
}

.faq-item.active .faq-answer {
  max-height: 500px;
}

.faq-answer p {
  padding: 0 24px 22px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--text-gray);
  margin: 0;
}

.faq-answer strong {
  color: var(--primary-blue);
  font-weight: 600;
}

/* ========== 页面内页 Banner ========== */
.page-banner {
  padding: 140px 0 80px;
  background:
    /* 底部加深，确保文字清晰 */
    linear-gradient(to top, rgba(0, 15, 40, 0.45) 0%, transparent 55%),
    /* 整体蓝色遮罩，统一色调 */
    linear-gradient(135deg, rgba(0, 45, 110, 0.88) 0%, rgba(0, 60, 146, 0.78) 50%, rgba(26, 91, 184, 0.72) 100%),
    /* 背景图 */
    url("https://oss.systemdiv.com/win-c/banner-bg.jpg"),
    /* 基础渐变兜底 */
    linear-gradient(135deg, #002d6e 0%, #003c92 50%, #1a5bb8 100%);
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  color: #fff;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.page-banner::before {
  content: "";
  position: absolute;
  top: -80px;
  right: -60px;
  width: 320px;
  height: 320px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(212, 168, 67, 0.1) 0%, transparent 65%);
  pointer-events: none;
}

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

.page-banner h1 {
  color: #fff;
  font-size: 2.5rem;
  margin-bottom: 12px;
}

.page-banner p {
  color: rgba(255, 255, 255, 0.9);
  font-size: 1.1rem;
  max-width: 600px;
  margin: 0 auto;
}

.wk-breadcrumb {
  display: flex;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
  gap: 0;
  margin-top: 18px;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.7);
  list-style: none;
  padding: 0;
  letter-spacing: 0.3px;
}

.wk-breadcrumb a,
.wk-breadcrumb span {
  display: inline-flex;
  align-items: center;
  color: rgba(255, 255, 255, 0.85);
  transition: var(--transition);
  position: relative;
}

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

/* 伪元素分隔符 */
.wk-breadcrumb a::after,
.wk-breadcrumb span:not(.current)::after {
  content: "›";
  margin: 0 10px;
  color: rgba(255, 255, 255, 0.35);
  font-size: 16px;
  font-weight: 300;
  line-height: 1;
}

/* 当前页样式 */
.wk-breadcrumb .current {
  color: var(--accent-gold);
  font-weight: 600;
}

/* 首页图标 */
.wk-breadcrumb .breadcrumb-home::before {
  content: "🏠";
  margin-right: 5px;
  font-size: 13px;
}

/* ========== 课程详情页 ========== */
.course-detail-layout {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 40px;
  align-items: start;
}

.course-detail-content h2 {
  font-size: 1.75rem;
  margin: 30px 0 16px;
  padding-left: 14px;
  border-left: 4px solid var(--primary-red);
}

.course-detail-content h2:first-child {
  margin-top: 0;
}

.course-detail-content p {
  color: var(--text-gray);
  margin-bottom: 16px;
  line-height: 1.9;
}

.course-detail-content ul {
  margin-bottom: 16px;
  padding-left: 20px;
}

.course-detail-content ul li {
  color: var(--text-gray);
  margin-bottom: 8px;
  line-height: 1.8;
}

.course-subject-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 16px 0;
}

.course-subject-tag {
  padding: 6px 16px;
  background: rgba(0, 60, 146, 0.08);
  color: var(--primary-blue);
  border-radius: 20px;
  font-size: 14px;
  font-weight: 500;
}

/* 侧边栏 */
.sidebar {
  position: sticky;
  top: 92px;
}

.sidebar-card {
  background: #fff;
  border-radius: 12px;
  padding: 28px;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-color);
  margin-bottom: 24px;
}

.sidebar-card h4 {
  font-size: 1.1rem;
  margin-bottom: 16px;
  color: var(--primary-blue);
  padding-bottom: 12px;
  border-bottom: 2px solid var(--bg-light);
}

.sidebar-card .contact-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 0;
  font-size: 14px;
  color: var(--text-dark);
}

.sidebar-card .contact-item .icon {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  background: rgba(0, 60, 146, 0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  color: var(--primary-blue);
  flex-shrink: 0;
}

.sidebar-card .wk-btn {
  width: 100%;
  margin-top: 12px;
}

/* 侧边栏中的链接列表（复用footer-links类，需覆盖为深色文字） */
.sidebar-card .footer-links {
  list-style: none;
  padding: 0;
  margin: 0;
}

.sidebar-card .footer-links li {
  padding: 10px 0;
  border-bottom: 1px solid var(--border-color);
}

.sidebar-card .footer-links li:last-child {
  border-bottom: none;
}

.sidebar-card .footer-links a {
  color: var(--text-gray);
  font-size: 14px;
  transition: var(--transition);
  display: block;
  line-height: 1.6;
}

.sidebar-card .footer-links a:hover {
  color: var(--primary-blue);
  padding-left: 4px;
}

/* 班型表格 */
.class-table {
  width: 100%;
  border-collapse: collapse;
  margin: 16px 0;
  font-size: 14px;
}

.class-table th {
  background: var(--primary-blue);
  color: #fff;
  padding: 12px 16px;
  text-align: left;
  font-weight: 600;
}

.class-table td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--border-color);
  color: var(--text-gray);
}

.class-table tr:nth-child(even) td {
  background: var(--bg-light);
}

.class-table tr:hover td {
  background: rgba(0, 60, 146, 0.04);
}

/* ========== 分类筛选 ========== */
.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 30px;
  justify-content: center;
}

.filter-btn {
  display: inline-block;
  padding: 8px 20px;
  border-radius: 20px;
  font-size: 14px;
  font-weight: 500;
  border: 1px solid var(--border-color);
  background: #fff;
  color: var(--text-gray);
  transition: var(--transition);
  text-decoration: none;
  cursor: pointer;
  line-height: 1.5;
}

.filter-btn:hover {
  border-color: var(--primary-blue);
  color: var(--primary-blue);
  background: rgba(0, 60, 146, 0.04);
  transform: translateY(-1px);
}

.filter-btn.active {
  background: var(--primary-blue);
  border-color: var(--primary-blue);
  color: #fff;
  box-shadow: 0 2px 8px rgba(0, 60, 146, 0.25);
}

/* ========== 新闻列表 ========== */
.news-list {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.news-item {
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: 0;
  background: #fff;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-color);
  transition: var(--transition);
  align-items: stretch;
}

.news-item:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-3px);
  border-color: rgba(0, 60, 146, 0.2);
}

.news-item-thumb {
  display: block;
  min-height: 200px;
  background: linear-gradient(135deg, var(--primary-blue), var(--primary-blue-light));
  overflow: hidden;
  position: relative;
}

.news-item-thumb::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, rgba(0,60,146,0.1) 0%, transparent 50%);
  pointer-events: none;
}

.news-item-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.news-item:hover .news-item-thumb img {
  transform: scale(1.08);
}

.news-item-content {
  padding: 24px 28px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  min-width: 0;
}

.news-item-meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 14px;
  font-size: 13px;
  color: var(--text-light);
  margin-bottom: 12px;
}

.news-item-meta .category {
  color: #fff;
  background: var(--primary-red);
  padding: 3px 10px;
  border-radius: 4px;
  font-weight: 600;
  font-size: 12px;
}

.news-item-meta .meta-item {
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.news-item h3 {
  font-size: 1.2rem;
  margin-bottom: 10px;
  line-height: 1.5;
  transition: var(--transition);
}

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

.news-item h3 a {
  color: var(--text-dark);
}

.news-item h3 a:hover {
  color: var(--primary-blue);
}

.news-item-excerpt {
  color: var(--text-gray);
  font-size: 14px;
  line-height: 1.8;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: 0;
}

.news-item-more {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  margin-top: 12px;
  font-size: 13px;
  color: var(--primary-blue);
  font-weight: 600;
  transition: var(--transition);
}

.news-item-more:hover {
  gap: 8px;
  color: var(--primary-red);
}
  margin-bottom: 0;
}

/* 分类筛选 */
.news-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 30px;
  justify-content: center;
}

.news-filter-btn {
  padding: 8px 20px;
  border: 1px solid var(--border-color);
  background: #fff;
  color: var(--text-gray);
  border-radius: 20px;
  font-size: 14px;
  cursor: pointer;
  transition: var(--transition);
}

.news-filter-btn:hover,
.news-filter-btn.active {
  background: var(--primary-blue);
  border-color: var(--primary-blue);
  color: #fff;
}

/* 分页 */
.wk-pagination {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-top: 40px;
}

.wk-pagination a,
.wk-pagination span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 40px;
  height: 40px;
  padding: 0 12px;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 500;
  border: 1px solid var(--border-color);
  color: var(--text-dark);
  transition: var(--transition);
  text-decoration: none;
}

.wk-pagination a:hover {
  border-color: var(--primary-blue);
  color: var(--primary-blue);
}

.wk-pagination .active {
  background: var(--primary-blue);
  border-color: var(--primary-blue);
  color: #fff;
}

/* ========== 新闻详情 ========== */
.article-header {
  text-align: center;
  margin-bottom: 36px;
  padding-bottom: 28px;
  border-bottom: 1px solid var(--border-color);
}

.article-header .category {
  display: inline-block;
  padding: 5px 16px;
  background: rgba(206, 19, 28, 0.08);
  color: var(--primary-red);
  border-radius: 20px;
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 18px;
  letter-spacing: 0.5px;
}

.article-header h1 {
  font-size: 1.9rem;
  margin-bottom: 18px;
  line-height: 1.45;
  color: var(--text-dark);
  font-weight: 700;
}

.article-meta {
  display: flex;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
  gap: 20px;
  font-size: 13px;
  color: var(--text-light);
}

.article-meta span {
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.article-content {
  max-width: 780px;
  margin: 0 auto;
}

.article-content p {
  color: var(--text-gray);
  margin-bottom: 22px;
  line-height: 2;
  font-size: 16px;
  text-align: justify;
}

.article-content h2 {
  font-size: 1.5rem;
  margin: 40px 0 18px;
  color: var(--primary-blue);
  font-weight: 700;
  padding-left: 14px;
  border-left: 4px solid var(--primary-blue);
}

.article-content h3 {
  font-size: 1.25rem;
  margin: 32px 0 14px;
  color: var(--text-dark);
  font-weight: 600;
}

.article-content img {
  border-radius: 10px;
  margin: 28px 0;
  box-shadow: var(--shadow-sm);
}

.article-content blockquote {
  border-left: 4px solid var(--primary-red);
  padding: 18px 26px;
  background: var(--bg-light);
  border-radius: 0 8px 8px 0;
  margin: 28px 0;
  color: var(--text-gray);
  font-style: italic;
  line-height: 1.8;
}

.article-content ul,
.article-content ol {
  margin-bottom: 22px;
  padding-left: 24px;
  color: var(--text-gray);
  line-height: 2;
  font-size: 16px;
}

.article-content li {
  margin-bottom: 8px;
}

.article-content a {
  color: var(--primary-blue);
  text-decoration: underline;
}

.article-content a:hover {
  color: var(--primary-red);
}

/* 文章底部 */
.article-footer {
  margin-top: 48px;
  padding-top: 24px;
  border-top: 1px solid var(--border-color);
}

.article-footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
}

.article-share {
  display: flex;
  align-items: center;
  gap: 12px;
}

.share-label {
  font-size: 14px;
  color: var(--text-gray);
}

.share-link {
  font-size: 14px;
  color: var(--primary-blue);
  text-decoration: none;
  padding: 4px 12px;
  border: 1px solid var(--border-color);
  border-radius: 4px;
  transition: var(--transition);
}

.share-link:hover {
  border-color: var(--primary-blue);
  background: rgba(0, 60, 146, 0.04);
  color: var(--primary-blue);
}

/* 蓝色边框按钮（适合白色背景） */
.wk-btn-outline-blue {
  display: inline-block;
  padding: 10px 24px;
  border: 1px solid var(--primary-blue);
  border-radius: 6px;
  color: var(--primary-blue);
  background: #fff;
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
  transition: var(--transition);
  cursor: pointer;
}

.wk-btn-outline-blue:hover {
  background: var(--primary-blue);
  color: #fff;
  box-shadow: 0 4px 12px rgba(0, 60, 146, 0.25);
}

/* 紧凑版Banner */
.page-banner-compact {
  padding: 120px 0 50px;
}

.page-banner-title {
  font-size: 1.8rem;
  margin-bottom: 12px;
}

/* 侧边栏链接 */
.sidebar-links {
  list-style: none;
  padding: 0;
  margin: 0;
}

.sidebar-links li {
  border-bottom: 1px solid var(--border-color);
}

.sidebar-links li:last-child {
  border-bottom: none;
}

.sidebar-links a {
  display: block;
  padding: 10px 0;
  color: var(--text-gray);
  font-size: 14px;
  text-decoration: none;
  transition: var(--transition);
  line-height: 1.5;
}

.sidebar-links a:hover {
  color: var(--primary-blue);
  padding-left: 6px;
}

/* ========== 关于我们 ========== */
.about-hero {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 50px;
  align-items: center;
}

.about-hero-text h2 {
  font-size: 2rem;
  margin-bottom: 20px;
  color: var(--primary-blue);
}

.about-hero-text p {
  color: var(--text-gray);
  margin-bottom: 16px;
  line-height: 1.9;
}

.about-hero-image {
  border-radius: 16px;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  aspect-ratio: 4 / 3;
}

.about-hero-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* 理念卡片 */
.philosophy-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}

.philosophy-card {
  text-align: center;
  padding: 40px 30px;
  background: #fff;
  border-radius: 16px;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}

.philosophy-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
}

.philosophy-icon {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary-blue), var(--primary-blue-light));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 32px;
  color: #fff;
  margin: 0 auto 20px;
}

.philosophy-card h3 {
  font-size: 1.3rem;
  margin-bottom: 10px;
  color: var(--primary-blue);
}

.philosophy-card p {
  color: var(--text-gray);
  font-size: 14px;
  line-height: 1.8;
  margin-bottom: 0;
}

/* 创始人 */
.founder-section {
  background: linear-gradient(135deg, var(--primary-blue-dark), var(--primary-blue));
  color: #fff;
  border-radius: 20px;
  padding: 50px;
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 40px;
  align-items: center;
}

.founder-avatar {
  width: 200px;
  height: 200px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.15);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 4rem;
  color: #fff;
  border: 4px solid rgba(255, 255, 255, 0.3);
  overflow: hidden;
}

.founder-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.founder-info h3 {
  color: #fff;
  font-size: 1.6rem;
  margin-bottom: 6px;
}

.founder-info .title {
  color: var(--accent-gold);
  font-size: 1rem;
  margin-bottom: 16px;
  font-weight: 600;
}

.founder-info p {
  color: rgba(255, 255, 255, 0.92);
  line-height: 1.9;
  font-size: 15px;
  margin-bottom: 0;
}

/* ========== 核心团队 ========== */
.team-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.team-card {
  background: #fff;
  border-radius: 16px;
  padding: 32px;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-color);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.team-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--primary-blue);
}

.team-card.team-card-red::before {
  background: var(--primary-red);
}

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

.team-card-icon {
  width: 56px;
  height: 56px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  margin-bottom: 18px;
  background: rgba(0, 60, 146, 0.1);
}

.team-card-red .team-card-icon {
  background: rgba(206, 19, 28, 0.1);
}

.team-card h4 {
  font-size: 1.2rem;
  color: var(--text-dark);
  margin-bottom: 8px;
}

.team-card .team-count {
  font-size: 14px;
  color: var(--primary-blue);
  font-weight: 600;
  margin-bottom: 14px;
}

.team-card-red .team-count {
  color: var(--primary-red);
}

.team-card p {
  color: var(--text-gray);
  line-height: 1.8;
  font-size: 14px;
  margin-bottom: 0;
}

.team-card ul {
  margin: 12px 0 0;
  padding-left: 18px;
  color: var(--text-gray);
  font-size: 14px;
  line-height: 1.8;
}

.team-card ul li {
  margin-bottom: 4px;
}

/* ========== 联系我们 ========== */
.contact-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
}

.contact-info-card {
  background: #fff;
  border-radius: 16px;
  padding: 36px;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-color);
  margin-bottom: 24px;
}

.contact-info-card h3 {
  font-size: 1.3rem;
  margin-bottom: 20px;
  color: var(--primary-blue);
  display: flex;
  align-items: center;
  gap: 10px;
}

.contact-info-card h3::before {
  content: "";
  width: 4px;
  height: 24px;
  background: var(--primary-red);
  border-radius: 2px;
}

.contact-row {
  display: flex;
  gap: 14px;
  padding: 12px 0;
  border-bottom: 1px dashed var(--border-color);
}

.contact-row:last-child {
  border-bottom: none;
}

.contact-row .icon {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: rgba(0, 60, 146, 0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  color: var(--primary-blue);
  flex-shrink: 0;
}

.contact-row .text {
  flex: 1;
}

.contact-row .label {
  font-size: 13px;
  color: var(--text-light);
  margin-bottom: 2px;
}

.contact-row .value {
  font-size: 15px;
  color: var(--text-dark);
  font-weight: 500;
}

/* 联系表单 */
.contact-form-card {
  background: #fff;
  border-radius: 16px;
  padding: 36px;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-color);
}

.contact-form-card h3 {
  font-size: 1.3rem;
  margin-bottom: 24px;
  color: var(--primary-blue);
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-size: 14px;
  font-weight: 600;
  color: var(--text-dark);
  margin-bottom: 8px;
}

.form-group label .required {
  color: var(--primary-red);
}

/* 覆盖Bootstrap form-control */
.form-control {
  width: 100% !important;
  padding: 12px 16px !important;
  border: 1px solid var(--border-color) !important;
  border-radius: 8px !important;
  font-size: 14px !important;
  color: var(--text-dark) !important;
  transition: var(--transition) !important;
  background: #fff !important;
  height: auto !important;
  line-height: 1.5 !important;
}

.form-control:focus {
  outline: none !important;
  border-color: var(--primary-blue) !important;
  box-shadow: 0 0 0 3px rgba(0, 60, 146, 0.1) !important;
}

textarea.form-control {
  resize: vertical;
  min-height: 120px;
}

/* 蜜罐字段：防机器人，对正常用户隐藏 */
.honeypot-field {
  position: absolute;
  left: -9999px;
  top: -9999px;
  width: 1px;
  height: 1px;
  overflow: hidden;
  opacity: 0;
}

.honeypot-field label {
  display: none;
}

.honeypot-field input {
  width: 1px;
  height: 1px;
  border: none;
  padding: 0;
  margin: 0;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

/* ========== CTA 区域 ========== */
.cta-section {
  background: linear-gradient(135deg, var(--primary-blue-dark), var(--primary-blue));
  padding: 60px 0;
  text-align: center;
  color: #fff;
  position: relative;
  overflow: hidden;
}

.cta-section h2 {
  color: #fff;
  font-size: 2rem;
  margin-bottom: 12px;
}

.cta-section p {
  color: rgba(255, 255, 255, 0.9);
  font-size: 1.1rem;
  margin-bottom: 28px;
}

.cta-section .wk-btn-primary {
  padding: 16px 48px;
  font-size: 1.1rem;
}

/* ========== 页脚 ========== */
.footer {
  background: #0a1628;
  color: rgba(255, 255, 255, 0.8);
  padding: 60px 0 0;
}

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

.footer-brand img {
  height: 44px;
  margin-bottom: 16px;
}

.footer-brand p {
  font-size: 14px;
  line-height: 1.8;
  margin-bottom: 16px;
  color: rgba(255, 255, 255, 0.75);
}

.footer-contact-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 6px 0;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.8);
}

.footer-contact-item .icon {
  color: var(--accent-gold);
  font-size: 16px;
}

.footer h4 {
  color: #fff;
  font-size: 1rem;
  margin-bottom: 20px;
  position: relative;
  padding-bottom: 10px;
}

.footer h4::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 30px;
  height: 2px;
  background: var(--primary-red);
}

.footer-links {
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer-links li {
  padding: 6px 0;
}

.footer-links a {
  color: rgba(255, 255, 255, 0.75);
  font-size: 14px;
  transition: var(--transition);
}

.footer-links a:hover {
  color: var(--accent-gold);
  padding-left: 4px;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding: 20px 0;
  text-align: center;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.6);
}

.footer-bottom a {
  color: rgba(255, 255, 255, 0.6);
}

.footer-bottom a:hover {
  color: var(--accent-gold);
}

/* ========== 返回顶部 ========== */
.back-to-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--primary-blue);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  cursor: pointer;
  box-shadow: var(--shadow-md);
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
  z-index: 999;
  border: none;
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
}

.back-to-top:hover {
  background: var(--primary-red);
  transform: translateY(-4px);
}

/* ========== 响应式 ========== */
@media (max-width: 992px) {
  h1 { font-size: 2rem; }
  h2 { font-size: 1.6rem; }

  .hero h1 { font-size: 2.2rem; }
  .hero { min-height: 480px; }

  .course-grid,
  .advantage-grid,
  .philosophy-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .teacher-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .campus-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .process-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
  }

  .course-detail-layout {
    grid-template-columns: 1fr;
  }

  .sidebar {
    position: static;
  }

  .about-hero,
  .contact-layout {
    grid-template-columns: 1fr;
  }

  .founder-section {
    grid-template-columns: 1fr;
    text-align: center;
    padding: 36px;
  }

  .founder-avatar {
    margin: 0 auto;
  }

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

@media (max-width: 768px) {
  .wk-navbar-toggler {
    display: block;
  }

  .wk-navbar-nav {
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    background: #fff;
    flex-direction: column;
    padding: 16px;
    gap: 4px;
    box-shadow: var(--shadow-lg);
    max-height: calc(100vh - 72px);
    overflow-y: auto;
    transform: translateY(-120%);
    transition: transform 0.3s ease;
    align-items: stretch;
  }

  .wk-navbar-nav.show {
    transform: translateY(0);
  }

  .wk-navbar-nav .wk-nav-link {
    padding: 12px 16px;
  }

  .wk-dropdown-menu {
    position: static;
    opacity: 1;
    visibility: visible;
    transform: none;
    box-shadow: none;
    padding-left: 20px;
    display: none;
  }

  .wk-nav-item.dropdown.open .wk-dropdown-menu {
    display: block;
  }

  .hero {
    min-height: 420px;
    padding-top: 72px;
  }

  .hero h1 {
    font-size: 1.8rem;
  }

  .hero-subtitle {
    font-size: 1rem;
  }

  .hero-stats {
    gap: 24px;
  }

  .hero-stat-number {
    font-size: 1.6rem;
  }

  .section {
    padding: 50px 0;
  }

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

  .course-grid,
  .advantage-grid,
  .philosophy-grid,
  .teacher-grid,
  .campus-grid {
    grid-template-columns: 1fr;
  }

  .process-grid {
    grid-template-columns: 1fr;
  }

  .news-item {
    grid-template-columns: 1fr;
  }

  .news-item-thumb {
    min-height: 180px;
    width: 100%;
  }

  .news-item-content {
    padding: 20px;
  }

  .form-row {
    grid-template-columns: 1fr;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 30px;
  }

  .page-banner {
    padding: 120px 0 60px;
  }

  .page-banner h1 {
    font-size: 1.8rem;
  }

  .cta-section h2 {
    font-size: 1.5rem;
  }

  .wk-btn {
    padding: 12px 24px;
    font-size: 15px;
  }

  .brand-slogan {
    font-size: 11px;
    padding-left: 8px;
    letter-spacing: 0.5px;
  }

  .wk-navbar-brand img {
    height: 38px;
  }

  .highscore-stats {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .highscore-tabs {
    gap: 8px;
  }

  .highscore-tab {
    padding: 8px 20px;
    font-size: 14px;
  }

  .highscore-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
  }

  .highscore-card {
    padding: 18px 12px;
  }

  .faq-question {
    padding: 16px 18px;
  }

  .faq-q-text {
    font-size: 15px;
  }

  .faq-answer p {
    padding: 0 18px 18px;
    font-size: 14px;
  }

  .team-grid {
    grid-template-columns: 1fr;
  }

  .team-card {
    padding: 24px;
  }

  .stats-showcase {
    grid-template-columns: 1fr;
    padding: 30px 24px;
    gap: 24px;
  }

  .stats-showcase-main {
    border-right: none;
    border-bottom: 1px solid rgba(255, 255, 255, 0.15);
    padding-bottom: 24px;
  }

  .stats-big-number {
    font-size: 3.5rem;
  }

  .highscore-card-score {
    font-size: 1.6rem;
  }

  .testimonial-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .testimonial-content {
    min-height: auto;
  }
}

@media (max-width: 480px) {
  .hero-buttons {
    flex-direction: column;
  }

  .hero-buttons .wk-btn {
    width: 100%;
  }

  .brand-slogan {
    display: none;
  }
}

/* ========== 课程介绍页面 ========== */

/* 四大辅导模式 */
.mode-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.mode-card {
  background: #fff;
  border-radius: 12px;
  padding: 32px 24px;
  border: 1px solid var(--border-color);
  position: relative;
  transition: var(--transition);
  overflow: hidden;
}

.mode-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
}

.mode-card-1::before { background: linear-gradient(90deg, var(--primary-blue), var(--primary-blue-light)); }
.mode-card-2::before { background: linear-gradient(90deg, #28a745, #5cb85c); }
.mode-card-3::before { background: linear-gradient(90deg, #ffc107, #ffdb4d); }
.mode-card-4::before { background: linear-gradient(90deg, var(--primary-red), #e74c3c); }

.mode-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}

.mode-number {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--primary-blue);
  opacity: 0.15;
  line-height: 1;
  margin-bottom: 12px;
}

.mode-card h3 {
  font-size: 1.15rem;
  margin-bottom: 12px;
  color: var(--text-dark);
}

.mode-card p {
  font-size: 14px;
  color: var(--text-gray);
  line-height: 1.8;
  margin: 0;
}

/* 课程介绍头部 */
.course-intro-header {
  text-align: center;
  margin-bottom: 40px;
}

.course-tag {
  display: inline-block;
  padding: 6px 18px;
  border-radius: 20px;
  font-size: 13px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 16px;
  letter-spacing: 1px;
}

.course-tag-blue { background: linear-gradient(135deg, var(--primary-blue), var(--primary-blue-light)); }
.course-tag-green { background: linear-gradient(135deg, #28a745, #5cb85c); }
.course-tag-red { background: linear-gradient(135deg, var(--primary-red), #e74c3c); }
.course-tag-purple { background: linear-gradient(135deg, #6f42c1, #9b59b6); }

.course-intro-header h2 {
  font-size: 2rem;
  margin-bottom: 12px;
  color: var(--text-dark);
}

.course-intro-header p {
  color: var(--text-gray);
  font-size: 15px;
  margin: 0;
}

/* 课程介绍布局 */
.course-intro-grid {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 40px;
  align-items: start;
}

.course-intro-main {
  min-width: 0;
}

.course-intro-block {
  margin-bottom: 36px;
}

.course-intro-block:last-child {
  margin-bottom: 0;
}

.course-intro-block h3 {
  font-size: 1.3rem;
  color: var(--primary-blue);
  margin-bottom: 16px;
  padding-left: 14px;
  border-left: 4px solid var(--primary-blue);
}

.course-intro-block p {
  color: var(--text-gray);
  line-height: 2;
  font-size: 15px;
  margin-bottom: 14px;
}

.course-intro-block p:last-child {
  margin-bottom: 0;
}

.sub-title {
  font-size: 1.05rem;
  color: var(--text-dark);
  margin: 24px 0 14px;
  font-weight: 600;
}

/* 阶段卡片 */
.stage-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-top: 16px;
}

.stage-card {
  background: var(--bg-light);
  border-radius: 10px;
  padding: 20px;
  border-left: 4px solid var(--primary-blue);
}

.stage-card h4 {
  font-size: 1.05rem;
  color: var(--primary-blue);
  margin-bottom: 10px;
}

.stage-card p {
  font-size: 14px;
  color: var(--text-gray);
  line-height: 1.8;
  margin: 0;
}

/* A-Level评级 */
.grade-row {
  display: flex;
  gap: 8px;
  margin-top: 16px;
  flex-wrap: wrap;
}

.grade-item {
  flex: 1;
  min-width: 70px;
  text-align: center;
  padding: 14px 8px;
  border-radius: 8px;
  background: var(--bg-light);
}

.grade-letter {
  display: block;
  font-size: 1.4rem;
  font-weight: 800;
  margin-bottom: 4px;
}

.grade-range {
  font-size: 11px;
  color: var(--text-light);
}

.grade-a-star .grade-letter { color: #ffd700; }
.grade-a .grade-letter { color: #28a745; }
.grade-b .grade-letter { color: #17a2b8; }
.grade-c .grade-letter { color: #007bff; }
.grade-d .grade-letter { color: #6c757d; }
.grade-e .grade-letter { color: #fd7e14; }
.grade-u .grade-letter { color: #dc3545; }

/* 提示框 */
.tip-box {
  background: linear-gradient(135deg, #fff8e1, #fff3cd);
  border-left: 4px solid #ffc107;
  border-radius: 0 8px 8px 0;
  padding: 20px 24px;
  margin-top: 8px;
}

.tip-box p {
  color: #856404;
  font-size: 14px;
  line-height: 1.9;
  margin: 0;
}

/* 考试局列表 */
.exam-board-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.exam-board-list li {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 0;
  border-bottom: 1px solid var(--border-color);
  font-size: 14px;
}

.exam-board-list li:last-child {
  border-bottom: none;
}

.exam-board-list strong {
  color: var(--text-dark);
}

.exam-board-list span {
  color: var(--text-light);
  font-size: 13px;
}

.sidebar-note {
  font-size: 12px;
  color: var(--text-light);
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px dashed var(--border-color);
  line-height: 1.6;
}

/* 科目标签 */
.subject-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.subject-tags span {
  display: inline-block;
  padding: 5px 12px;
  background: rgba(255, 255, 255, 0.2);
  border-radius: 4px;
  font-size: 13px;
  color: #fff;
}

.sidebar-card-highlight {
  background: linear-gradient(135deg, var(--primary-blue), var(--primary-blue-light));
  color: #fff;
}

.sidebar-card-highlight h4 {
  color: #fff;
}

/* 考试时间框 */
.exam-time-box {
  margin-top: 8px;
}

.exam-time-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 16px;
  background: var(--bg-light);
  border-radius: 8px;
}

.exam-time-icon {
  font-size: 1.5rem;
  flex-shrink: 0;
}

.exam-time-item strong {
  display: block;
  color: var(--text-dark);
  margin-bottom: 4px;
  font-size: 14px;
}

.exam-time-item p {
  font-size: 13px;
  color: var(--text-gray);
  margin: 0;
  line-height: 1.5;
}

/* IGCSE评级体系 */
.grade-system-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-top: 16px;
}

.grade-system-card {
  background: var(--bg-light);
  border-radius: 10px;
  padding: 20px;
}

.grade-system-card h4 {
  font-size: 1rem;
  color: var(--primary-blue);
  margin-bottom: 8px;
}

.grade-system-card p {
  font-size: 13px;
  color: var(--text-gray);
  margin-bottom: 12px;
  line-height: 1.6;
}

.grade-mini-row {
  display: flex;
  gap: 4px;
  flex-wrap: wrap;
}

.grade-mini {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  font-size: 12px;
  font-weight: 700;
  color: #fff;
}

.grade-mini.grade-a-star, .grade-mini.grade-9 { background: #ffd700; color: #333; }
.grade-mini.grade-a, .grade-mini.grade-8 { background: #28a745; }
.grade-mini.grade-b, .grade-mini.grade-7 { background: #17a2b8; }
.grade-mini.grade-c, .grade-mini.grade-6 { background: #007bff; }
.grade-mini.grade-d, .grade-mini.grade-5 { background: #6c757d; }
.grade-mini.grade-e, .grade-mini.grade-4 { background: #fd7e14; }
.grade-mini.grade-f, .grade-mini.grade-3 { background: #e67e22; }
.grade-mini.grade-g, .grade-mini.grade-2 { background: #95a5a6; }
.grade-mini.grade-u, .grade-mini.grade-1 { background: #dc3545; }

/* AP分类 */
.ap-category-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
  margin-top: 16px;
}

.ap-category-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  padding: 16px 12px;
  background: var(--bg-light);
  border-radius: 8px;
  text-align: center;
  transition: var(--transition);
}

.ap-category-item:hover {
  background: rgba(0, 60, 146, 0.06);
  transform: translateY(-2px);
}

.ap-category-icon {
  font-size: 1.5rem;
}

.ap-category-item span:last-child {
  font-size: 13px;
  color: var(--text-gray);
  font-weight: 500;
}

/* AP评级 */
.ap-grade-row {
  display: flex;
  gap: 12px;
  margin-top: 16px;
}

.ap-grade-item {
  flex: 1;
  text-align: center;
  padding: 20px 12px;
  border-radius: 10px;
  background: var(--bg-light);
  transition: var(--transition);
}

.ap-grade-item:hover {
  transform: translateY(-3px);
}

.ap-grade-score {
  display: block;
  font-size: 2rem;
  font-weight: 800;
  margin-bottom: 6px;
}

.ap-grade-label {
  font-size: 13px;
  color: var(--text-gray);
}

.ap-grade-5 { background: linear-gradient(135deg, #d4edda, #c3e6cb); }
.ap-grade-5 .ap-grade-score { color: #28a745; }
.ap-grade-4 { background: linear-gradient(135deg, #d1ecf1, #bee5eb); }
.ap-grade-4 .ap-grade-score { color: #17a2b8; }
.ap-grade-3 { background: linear-gradient(135deg, #cce5ff, #b8daff); }
.ap-grade-3 .ap-grade-score { color: #007bff; }
.ap-grade-2 { background: linear-gradient(135deg, #fff3cd, #ffeeba); }
.ap-grade-2 .ap-grade-score { color: #ffc107; }
.ap-grade-1 { background: linear-gradient(135deg, #f8d7da, #f5c6cb); }
.ap-grade-1 .ap-grade-score { color: #dc3545; }

/* IB学科组 */
.ib-subject-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-top: 12px;
}

.ib-subject-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px 16px;
  background: var(--bg-light);
  border-radius: 8px;
  transition: var(--transition);
}

.ib-subject-item:hover {
  background: rgba(111, 66, 193, 0.08);
}

.ib-subject-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: linear-gradient(135deg, #6f42c1, #9b59b6);
  color: #fff;
  font-size: 13px;
  font-weight: 700;
  flex-shrink: 0;
}

.ib-subject-item span:last-child {
  font-size: 14px;
  color: var(--text-dark);
  font-weight: 500;
}

/* IB核心要求 */
.ib-core-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-top: 12px;
}

.ib-core-card {
  background: linear-gradient(135deg, #f3e8ff, #e8d5ff);
  border-radius: 10px;
  padding: 20px;
  text-align: center;
  transition: var(--transition);
}

.ib-core-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-sm);
}

.ib-core-icon {
  font-size: 2rem;
  margin-bottom: 10px;
}

.ib-core-card h4 {
  font-size: 1rem;
  color: #6f42c1;
  margin-bottom: 8px;
}

.ib-core-card p {
  font-size: 13px;
  color: var(--text-gray);
  line-height: 1.7;
  margin: 0;
}

/* IB评分体系 */
.ib-score-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-top: 16px;
}

.ib-score-item {
  text-align: center;
  padding: 24px 16px;
  background: var(--bg-light);
  border-radius: 10px;
  border-top: 4px solid #6f42c1;
  transition: var(--transition);
}

.ib-score-item:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-sm);
}

.ib-score-number {
  font-size: 2.5rem;
  font-weight: 800;
  color: #6f42c1;
  line-height: 1;
  margin-bottom: 8px;
}

.ib-score-label {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-dark);
  margin-bottom: 8px;
}

.ib-score-item p {
  font-size: 12px;
  color: var(--text-gray);
  line-height: 1.6;
  margin: 0;
}

/* 课程介绍响应式 */
@media (max-width: 992px) {
  .mode-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .course-intro-grid {
    grid-template-columns: 1fr;
  }

  .ap-category-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .ib-core-grid {
    grid-template-columns: 1fr;
  }

  .ib-score-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .mode-grid {
    grid-template-columns: 1fr;
  }

  .stage-grid {
    grid-template-columns: 1fr;
  }

  .grade-system-grid {
    grid-template-columns: 1fr;
  }

  .ap-category-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .ap-grade-row {
    flex-wrap: wrap;
  }

  .ap-grade-item {
    flex: 0 0 calc(50% - 6px);
  }

  .ib-subject-grid {
    grid-template-columns: 1fr;
  }

  .ib-score-grid {
    grid-template-columns: 1fr;
  }

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