/* ========== Reset & Base ========== */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  color: #333; background: #fff; line-height: 1.6;
}
a { text-decoration: none; color: inherit; }
img { max-width: 100%; display: block; }
ul, ol { list-style: none; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

/* ========== Top Bar ========== */
.top-bar { background: #1a1a2e; color: #ccc; font-size: 13px; padding: 8px 0; }
.top-bar-inner { display: flex; justify-content: space-between; align-items: center; }
.top-right { display: flex; align-items: center; gap: 8px; }
.top-right a { color: #ccc; margin-left: 12px; transition: color .2s; }
.top-right a:hover { color: #667eea; }

/* ========== Header ========== */
.header {
  background: #fff; box-shadow: 0 2px 20px rgba(0,0,0,.06);
  position: sticky; top: 0; z-index: 100;
}
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 72px; }
.logo { display: flex; align-items: center; gap: 10px; cursor: pointer; }
.logo-img { height: 40px; width: auto; border-radius: 6px; }
.logo-icon { font-size: 32px; }
.logo-text { font-size: 22px; font-weight: 700; background: linear-gradient(135deg, #667eea, #764ba2); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
.nav { display: flex; gap: 4px; }
.nav-link {
  padding: 8px 16px; border-radius: 8px; font-size: 15px; font-weight: 500;
  color: #555; transition: all .25s;
}
.nav-link:hover, .nav-link.active { color: #667eea; background: rgba(102,126,234,.08); }
.mobile-menu-btn { display: none; background: none; border: none; font-size: 28px; cursor: pointer; color: #333; }
.mobile-nav {
  display: none; position: fixed; top: 72px; left: 0; right: 0; bottom: 0;
  background: #fff; z-index: 99; padding: 24px; flex-direction: column; gap: 4px;
  overflow-y: auto;
}
.mobile-nav.open { display: flex; }
.mobile-nav a {
  padding: 14px 20px; border-radius: 10px; font-size: 16px; font-weight: 500;
  color: #555; transition: all .25s;
}
.mobile-nav a:hover, .mobile-nav a.active { color: #667eea; background: rgba(102,126,234,.08); }

/* ========== Banner ========== */
.banner {
  background: linear-gradient(135deg, #1a1a2e 0%, #16213e 40%, #0f3460 70%, #1a1a2e 100%);
  padding: 100px 0 80px; position: relative; overflow: hidden;
}
.banner::before {
  content: ''; position: absolute; top: -50%; right: -20%; width: 600px; height: 600px;
  background: radial-gradient(circle, rgba(102,126,234,.3), transparent 70%); border-radius: 50%;
}
.banner::after {
  content: ''; position: absolute; bottom: -30%; left: -10%; width: 500px; height: 500px;
  background: radial-gradient(circle, rgba(240,147,251,.2), transparent 70%); border-radius: 50%;
}
.banner-content { position: relative; z-index: 1; text-align: center; }
.banner-title { font-size: 48px; font-weight: 800; color: #fff; line-height: 1.3; margin-bottom: 20px; }
.banner-desc { font-size: 18px; color: rgba(255,255,255,.7); max-width: 600px; margin: 0 auto 36px; }
.banner-actions { display: flex; gap: 16px; justify-content: center; margin-bottom: 60px; }

/* ========== Page Banner (子页面用) ========== */
.page-banner {
  background: linear-gradient(135deg, #1a1a2e, #0f3460);
  padding: 60px 0; position: relative; overflow: hidden;
}
.page-banner::before {
  content: ''; position: absolute; top: -30%; right: -10%; width: 400px; height: 400px;
  background: radial-gradient(circle, rgba(102,126,234,.25), transparent 70%); border-radius: 50%;
}
.page-banner-content { position: relative; z-index: 1; text-align: center; }
.page-banner-title { font-size: 36px; font-weight: 800; color: #fff; margin-bottom: 12px; }
.page-banner-desc { font-size: 16px; color: rgba(255,255,255,.6); }
.breadcrumb { margin-top: 16px; font-size: 14px; color: rgba(255,255,255,.5); }
.breadcrumb a { color: rgba(255,255,255,.5); transition: color .2s; }
.breadcrumb a:hover { color: #667eea; }
.breadcrumb span { margin: 0 8px; }

/* ========== Buttons ========== */
.btn {
  display: inline-block; padding: 14px 36px; border-radius: 12px; font-size: 16px;
  font-weight: 600; cursor: pointer; transition: all .3s; border: none;
}
.btn-primary {
  background: linear-gradient(135deg, #667eea, #764ba2); color: #fff;
  box-shadow: 0 8px 24px rgba(102,126,234,.4);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 12px 32px rgba(102,126,234,.5); }
.btn-outline { border: 2px solid rgba(255,255,255,.4); color: #fff; background: transparent; }
.btn-outline:hover { border-color: #fff; background: rgba(255,255,255,.1); }
.btn-outline-dark { border: 2px solid #667eea; color: #667eea; background: transparent; }
.btn-outline-dark:hover { background: #667eea; color: #fff; }
.btn-sm { padding: 10px 24px; font-size: 14px; }

/* Stats */
.banner-stats { display: flex; justify-content: center; gap: 60px; }
.stat-item { text-align: center; }
.stat-num { font-size: 42px; font-weight: 800; color: #fff; }
.stat-plus { font-size: 20px; color: #667eea; }
.stat-label { display: block; font-size: 14px; color: rgba(255,255,255,.6); margin-top: 4px; }

/* ========== Section Common ========== */
.section { padding: 80px 0; }
.section-header { text-align: center; margin-bottom: 56px; }
.section-title { font-size: 34px; font-weight: 700; color: #1a1a2e; margin-bottom: 12px; }
.section-subtitle { font-size: 16px; color: #888; }
.bg-light { background: #f8f9fe; }
.bg-white { background: #fff; }
.bg-dark { background: linear-gradient(135deg, #1a1a2e, #0f3460); color: #fff; }
.bg-dark .section-title { color: #fff; }
.bg-dark .section-subtitle { color: rgba(255,255,255,.6); }

/* ========== Courses ========== */
.course-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.course-card {
  background: #fff; border-radius: 16px; padding: 32px 24px; text-align: center;
  box-shadow: 0 4px 20px rgba(0,0,0,.04); position: relative; transition: all .3s;
}
.course-card:hover { transform: translateY(-6px); box-shadow: 0 12px 36px rgba(0,0,0,.1); }
.course-icon {
  width: 64px; height: 64px; border-radius: 16px; margin: 0 auto 18px;
  display: flex; align-items: center; justify-content: center; font-size: 28px;
}
.course-name { font-size: 18px; font-weight: 600; margin-bottom: 8px; color: #1a1a2e; }
.course-desc { font-size: 13px; color: #999; line-height: 1.6; }
.course-tag {
  position: absolute; top: 16px; right: 16px; padding: 3px 10px; border-radius: 20px;
  font-size: 11px; font-weight: 600; color: #fff; background: linear-gradient(135deg, #f5576c, #ff6b6b);
}

/* ========== Course Detail Cards (课程详情页用) ========== */
.course-detail-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 28px; }
.course-detail-card {
  background: #fff; border-radius: 20px; padding: 40px 32px;
  box-shadow: 0 4px 20px rgba(0,0,0,.04); transition: all .3s;
  display: flex; gap: 24px; align-items: flex-start;
}
.course-detail-card:hover { transform: translateY(-4px); box-shadow: 0 12px 36px rgba(0,0,0,.1); }
.course-detail-icon {
  width: 72px; height: 72px; border-radius: 18px; flex-shrink: 0;
  display: flex; align-items: center; justify-content: center; font-size: 32px;
}
.course-detail-info h3 { font-size: 20px; font-weight: 600; color: #1a1a2e; margin-bottom: 8px; }
.course-detail-info p { font-size: 14px; color: #888; line-height: 1.7; margin-bottom: 12px; }
.course-features { display: flex; flex-wrap: wrap; gap: 8px; }
.course-feature-tag {
  padding: 4px 12px; border-radius: 20px; font-size: 12px;
  background: rgba(102,126,234,.1); color: #667eea; font-weight: 500;
}

/* ========== Advantages ========== */
.advantage-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; }
.advantage-card {
  text-align: center; padding: 40px 28px; border-radius: 20px;
  background: #f8f9fe; transition: all .3s;
}
.advantage-card:hover { background: linear-gradient(135deg, #667eea, #764ba2); color: #fff; }
.advantage-card:hover .adv-icon { background: rgba(255,255,255,.2); }
.advantage-card:hover h3 { color: #fff; }
.advantage-card:hover p { color: rgba(255,255,255,.8); }
.adv-icon {
  width: 72px; height: 72px; border-radius: 20px; margin: 0 auto 20px;
  background: linear-gradient(135deg, rgba(102,126,234,.15), rgba(118,75,162,.15));
  display: flex; align-items: center; justify-content: center; font-size: 32px;
  transition: background .3s;
}
.advantage-card h3 { font-size: 20px; font-weight: 600; margin-bottom: 10px; color: #1a1a2e; transition: color .3s; }
.advantage-card p { font-size: 14px; color: #888; line-height: 1.7; transition: color .3s; }

/* ========== Advantage Detail (优势详情页) ========== */
.adv-detail-section { padding: 60px 0; }
.adv-detail-item {
  display: flex; gap: 60px; align-items: center; margin-bottom: 60px;
}
.adv-detail-item:last-child { margin-bottom: 0; }
.adv-detail-item.reverse { flex-direction: row-reverse; }
.adv-detail-visual {
  flex: 0 0 400px; height: 280px; border-radius: 20px;
  display: flex; align-items: center; justify-content: center;
  font-size: 80px; position: relative; overflow: hidden;
}
.adv-detail-text { flex: 1; }
.adv-detail-text h3 { font-size: 24px; font-weight: 700; color: #1a1a2e; margin-bottom: 12px; }
.adv-detail-text p { font-size: 15px; color: #666; line-height: 1.8; margin-bottom: 12px; }
.adv-detail-list { list-style: none; }
.adv-detail-list li {
  padding: 8px 0; font-size: 14px; color: #555;
  display: flex; align-items: center; gap: 10px;
}
.adv-detail-list li::before {
  content: '✓'; width: 22px; height: 22px; border-radius: 50%;
  background: rgba(102,126,234,.1); color: #667eea; font-size: 12px;
  display: flex; align-items: center; justify-content: center; flex-shrink: 0;
}

/* ========== Teachers ========== */
.teacher-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 28px; }
.teacher-card {
  background: #fff; border-radius: 20px; padding: 40px 24px; text-align: center;
  box-shadow: 0 4px 20px rgba(0,0,0,.04); transition: all .3s;
}
.teacher-card:hover { transform: translateY(-6px); box-shadow: 0 12px 36px rgba(0,0,0,.1); }
.teacher-avatar {
  width: 88px; height: 88px; border-radius: 50%; margin: 0 auto 18px;
  display: flex; align-items: center; justify-content: center;
  font-size: 32px; font-weight: 700; color: #fff;
}
.teacher-name { font-size: 20px; font-weight: 600; color: #1a1a2e; margin-bottom: 4px; }
.teacher-title { font-size: 13px; color: #667eea; font-weight: 500; margin-bottom: 10px; }
.teacher-desc { font-size: 13px; color: #999; line-height: 1.6; }

/* Teacher detail */
.teacher-detail-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 28px; }
.teacher-detail-card {
  background: #fff; border-radius: 20px; padding: 36px 28px;
  box-shadow: 0 4px 20px rgba(0,0,0,.04); transition: all .3s;
}
.teacher-detail-card:hover { transform: translateY(-4px); box-shadow: 0 12px 36px rgba(0,0,0,.1); }
.teacher-detail-top { display: flex; gap: 20px; align-items: center; margin-bottom: 16px; }
.teacher-detail-info h3 { font-size: 20px; font-weight: 600; color: #1a1a2e; }
.teacher-detail-info p { font-size: 13px; color: #667eea; font-weight: 500; }
.teacher-detail-desc { font-size: 14px; color: #888; line-height: 1.7; margin-bottom: 14px; }
.teacher-tags { display: flex; flex-wrap: wrap; gap: 6px; }
.teacher-tag {
  padding: 3px 10px; border-radius: 20px; font-size: 12px;
  background: rgba(102,126,234,.1); color: #667eea; font-weight: 500;
}

/* ========== Process ========== */
.process-steps { display: flex; align-items: center; justify-content: center; gap: 20px; }
.step { text-align: center; flex: 1; }
.step-num {
  font-size: 48px; font-weight: 800;
  background: linear-gradient(135deg, #667eea, #764ba2);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  margin-bottom: 12px;
}
.step h3 { font-size: 18px; font-weight: 600; margin-bottom: 6px; }
.step p { font-size: 13px; color: rgba(255,255,255,.6); }
.step-arrow { font-size: 28px; color: rgba(255,255,255,.3); }

/* ========== News ========== */
.news-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.news-card {
  background: #fff; border-radius: 16px; overflow: hidden;
  box-shadow: 0 4px 20px rgba(0,0,0,.06); transition: all .3s;
}
.news-card:hover { transform: translateY(-6px); box-shadow: 0 12px 36px rgba(0,0,0,.12); }
.news-img { height: 180px; position: relative; display: flex; align-items: flex-end; padding: 16px; }
.news-date { color: #fff; font-size: 13px; font-weight: 500; background: rgba(0,0,0,.3); padding: 4px 12px; border-radius: 20px; }
.news-body { padding: 24px; }
.news-tag {
  display: inline-block; padding: 3px 12px; border-radius: 20px; font-size: 12px;
  background: rgba(102,126,234,.1); color: #667eea; font-weight: 500; margin-bottom: 10px;
}
.news-title { font-size: 17px; font-weight: 600; color: #1a1a2e; margin-bottom: 8px; line-height: 1.4; }
.news-desc { font-size: 13px; color: #999; line-height: 1.6; }

/* News list (新闻列表页) */
.news-list { display: flex; flex-direction: column; gap: 20px; }
.news-list-item {
  display: flex; gap: 24px; background: #fff; border-radius: 16px; overflow: hidden;
  box-shadow: 0 4px 20px rgba(0,0,0,.04); transition: all .3s; padding: 0;
}
.news-list-item:hover { transform: translateY(-3px); box-shadow: 0 12px 36px rgba(0,0,0,.1); }
.news-list-img {
  flex: 0 0 260px; min-height: 180px; display: flex; align-items: flex-end; padding: 16px;
}
.news-list-body { flex: 1; padding: 24px 24px 24px 0; display: flex; flex-direction: column; justify-content: center; }
.news-list-body .news-tag { align-self: flex-start; }
.news-list-body .news-title { font-size: 18px; margin-bottom: 10px; }
.news-list-body .news-desc { font-size: 14px; line-height: 1.7; margin-bottom: 12px; }
.news-meta { font-size: 13px; color: #aaa; display: flex; gap: 16px; }

/* News pagination */
.pagination { display: flex; justify-content: center; gap: 8px; margin-top: 40px; }
.page-btn {
  width: 40px; height: 40px; border-radius: 10px; border: 1px solid #e0e0e0;
  background: #fff; color: #555; font-size: 14px; cursor: pointer;
  display: flex; align-items: center; justify-content: center; transition: all .2s;
}
.page-btn:hover, .page-btn.active {
  background: linear-gradient(135deg, #667eea, #764ba2); color: #fff; border-color: transparent;
}

/* ========== About ========== */
.about-inner { display: flex; gap: 60px; align-items: center; }
.about-text { flex: 1; }
.about-text .section-title { margin-bottom: 20px; }
.about-desc { font-size: 15px; color: #666; line-height: 1.8; margin-bottom: 16px; }
.about-highlights { display: flex; gap: 32px; margin-top: 32px; }
.highlight { text-align: center; }
.highlight-num { font-size: 36px; font-weight: 800; color: #667eea; }
.highlight-num span { font-size: 16px; color: #999; }
.highlight-label { display: block; font-size: 13px; color: #888; margin-top: 4px; }
.about-visual { flex: 0 0 360px; }
.visual-box { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.visual-item {
  height: 140px; border-radius: 16px; display: flex; align-items: center; justify-content: center;
  font-size: 48px; box-shadow: 0 4px 20px rgba(0,0,0,.08);
}

/* About detail page */
.about-timeline { position: relative; padding-left: 40px; }
.about-timeline::before {
  content: ''; position: absolute; left: 15px; top: 0; bottom: 0; width: 2px;
  background: linear-gradient(to bottom, #667eea, #764ba2);
}
.timeline-item { position: relative; margin-bottom: 36px; }
.timeline-item::before {
  content: ''; position: absolute; left: -33px; top: 6px; width: 14px; height: 14px;
  border-radius: 50%; background: #667eea; border: 3px solid #fff;
  box-shadow: 0 0 0 3px rgba(102,126,234,.3);
}
.timeline-year { font-size: 14px; color: #667eea; font-weight: 600; margin-bottom: 4px; }
.timeline-content h4 { font-size: 16px; font-weight: 600; color: #1a1a2e; margin-bottom: 4px; }
.timeline-content p { font-size: 14px; color: #888; line-height: 1.6; }

.milestone-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; margin-top: 40px; }
.milestone-card {
  text-align: center; padding: 32px 20px; border-radius: 16px;
  background: #f8f9fe; transition: all .3s;
}
.milestone-card:hover { background: linear-gradient(135deg, #667eea, #764ba2); color: #fff; }
.milestone-card:hover .milestone-num { color: #fff; }
.milestone-card:hover .milestone-label { color: rgba(255,255,255,.8); }
.milestone-num { font-size: 36px; font-weight: 800; color: #667eea; transition: color .3s; }
.milestone-num span { font-size: 14px; }
.milestone-label { font-size: 13px; color: #888; margin-top: 4px; transition: color .3s; }

/* ========== Contact ========== */
.contact-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.contact-card {
  background: #f8f9fe; border-radius: 16px; padding: 32px 20px; text-align: center;
  transition: all .3s;
}
.contact-card:hover { background: linear-gradient(135deg, #667eea, #764ba2); color: #fff; }
.contact-card:hover .contact-icon { background: rgba(255,255,255,.2); }
.contact-card:hover p { color: #fff; }
.contact-card:hover span { color: rgba(255,255,255,.7); }
.contact-icon {
  width: 56px; height: 56px; border-radius: 14px; margin: 0 auto 14px;
  background: rgba(102,126,234,.1); display: flex; align-items: center; justify-content: center;
  font-size: 24px; transition: background .3s;
}
.contact-card h3 { font-size: 16px; font-weight: 600; margin-bottom: 8px; }
.contact-card p { font-size: 15px; color: #333; font-weight: 500; transition: color .3s; }
.contact-card span { font-size: 12px; color: #aaa; transition: color .3s; }

/* Contact form */
.contact-form-section { display: flex; gap: 48px; align-items: flex-start; }
.contact-info-panel { flex: 0 0 400px; }
.contact-info-item { display: flex; gap: 16px; margin-bottom: 28px; align-items: flex-start; }
.contact-info-icon {
  width: 48px; height: 48px; border-radius: 12px; flex-shrink: 0;
  background: rgba(102,126,234,.1); display: flex; align-items: center; justify-content: center;
  font-size: 20px;
}
.contact-info-item h4 { font-size: 15px; font-weight: 600; color: #1a1a2e; margin-bottom: 2px; }
.contact-info-item p { font-size: 14px; color: #888; }
.contact-form-panel { flex: 1; }
.contact-form {
  background: #fff; border-radius: 20px; padding: 40px;
  box-shadow: 0 4px 20px rgba(0,0,0,.06);
}
.form-row { display: flex; gap: 16px; margin-bottom: 16px; }
.form-group { flex: 1; margin-bottom: 0; }
.form-group.full { flex: none; width: 100%; margin-bottom: 16px; }
.form-group label { display: block; font-size: 14px; font-weight: 500; color: #555; margin-bottom: 6px; }
.form-group input, .form-group select, .form-group textarea {
  width: 100%; padding: 12px 16px; border: 1px solid #e0e0e0; border-radius: 10px;
  font-size: 14px; color: #333; background: #f8f9fe; transition: border-color .2s;
  font-family: inherit;
}
.form-group input:focus, .form-group select:focus, .form-group textarea:focus {
  outline: none; border-color: #667eea; background: #fff;
}
.form-group textarea { min-height: 120px; resize: vertical; }

/* Map placeholder */
.map-placeholder {
  width: 100%; height: 300px; border-radius: 16px; margin-top: 40px;
  background: linear-gradient(135deg, #e8ecf8, #d4d9f0);
  display: flex; align-items: center; justify-content: center;
  font-size: 18px; color: #999;
}

/* ========== Footer ========== */
.footer { background: #1a1a2e; color: #ccc; padding: 60px 0 0; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; padding-bottom: 40px; border-bottom: 1px solid rgba(255,255,255,.08); }
.footer-logo { display: flex; align-items: center; gap: 10px; margin-bottom: 16px; }
.footer-logo-img { height: 36px; width: auto; border-radius: 6px; }
.footer-logo .logo-text { font-size: 20px; font-weight: 700; }
.footer-about { font-size: 14px; color: #888; line-height: 1.7; }
.footer-col h4 { color: #fff; font-size: 16px; margin-bottom: 16px; }
.footer-col a { display: block; font-size: 14px; color: #888; margin-bottom: 10px; transition: color .2s; }
.footer-col a:hover { color: #667eea; }
.footer-bottom { text-align: center; padding: 20px 0; font-size: 13px; color: #666; }

/* ========== Back to top ========== */
.back-to-top {
  position: fixed; right: 24px; bottom: 24px; width: 44px; height: 44px;
  border-radius: 12px; background: linear-gradient(135deg, #667eea, #764ba2);
  color: #fff; border: none; font-size: 20px; cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  opacity: 0; visibility: hidden; transition: all .3s; z-index: 90;
  box-shadow: 0 4px 16px rgba(102,126,234,.4);
}
.back-to-top.show { opacity: 1; visibility: visible; }
.back-to-top:hover { transform: translateY(-3px); }

/* ========== Animations ========== */
.fade-in {
  opacity: 0; transform: translateY(30px);
  transition: opacity .6s ease, transform .6s ease;
}
.fade-in.visible { opacity: 1; transform: translateY(0); }

/* ========== Responsive ========== */
@media (max-width: 1024px) {
  .course-grid { grid-template-columns: repeat(2, 1fr); }
  .course-detail-grid { grid-template-columns: 1fr; }
  .advantage-grid { grid-template-columns: repeat(2, 1fr); }
  .teacher-grid { grid-template-columns: repeat(2, 1fr); }
  .teacher-detail-grid { grid-template-columns: 1fr; }
  .about-inner { flex-direction: column; }
  .about-visual { flex: none; width: 100%; max-width: 360px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .adv-detail-item { flex-direction: column !important; }
  .adv-detail-visual { flex: none; width: 100%; }
  .contact-form-section { flex-direction: column; }
  .contact-info-panel { flex: none; width: 100%; }
  .milestone-grid { grid-template-columns: repeat(2, 1fr); }
  .news-list-item { flex-direction: column; }
  .news-list-img { flex: none; width: 100%; min-height: 160px; }
  .news-list-body { padding: 20px; }
}

@media (max-width: 768px) {
  .nav { display: none; }
  .mobile-menu-btn { display: block; }
  .banner-title { font-size: 32px; }
  .page-banner-title { font-size: 28px; }
  .banner-stats { gap: 24px; flex-wrap: wrap; }
  .stat-num { font-size: 30px; }
  .course-grid { grid-template-columns: 1fr; }
  .advantage-grid { grid-template-columns: 1fr; }
  .teacher-grid { grid-template-columns: 1fr; }
  .news-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr 1fr; }
  .process-steps { flex-direction: column; }
  .step-arrow { transform: rotate(90deg); }
  .about-highlights { flex-wrap: wrap; gap: 20px; }
  .footer-grid { grid-template-columns: 1fr; }
  .section { padding: 60px 0; }
  .section-title { font-size: 26px; }
  .top-bar { display: none; }
  .form-row { flex-direction: column; }
  .milestone-grid { grid-template-columns: 1fr 1fr; }
}

/* ========== FAQ ========== */
.faq-list { max-width: 800px; margin: 0 auto; }
.faq-item { border: 1px solid #eee; border-radius: 12px; margin-bottom: 12px; overflow: hidden; transition: all .3s; }
.faq-item:hover { border-color: rgba(102,126,234,.3); }
.faq-q {
  padding: 18px 24px; font-size: 15px; font-weight: 600; color: #1a1a2e;
  display: flex; justify-content: space-between; align-items: center; cursor: pointer;
  background: #f8f9fe; transition: background .3s;
}
.faq-q:hover { background: rgba(102,126,234,.08); }
.faq-arrow { font-size: 12px; color: #667eea; transition: transform .3s; }
.faq-item.open .faq-arrow { transform: rotate(180deg); }
.faq-a {
  max-height: 0; overflow: hidden; transition: max-height .3s ease;
}
.faq-item.open .faq-a { max-height: 300px; }
.faq-a p { padding: 16px 24px; font-size: 14px; color: #666; line-height: 1.8; background: #fff; }

@media (max-width: 480px) {
  .contact-grid { grid-template-columns: 1fr; }
  .banner-stats { gap: 16px; }
  .stat-num { font-size: 24px; }
  .banner-actions { flex-direction: column; align-items: center; }
  .milestone-grid { grid-template-columns: 1fr; }
}