/* ===== CSS Variables ===== */
:root {
  --primary: #0a3d62;
  --primary-dark: #062b44;
  --primary-light: #155a8e;
  --accent: #c9a45c;
  --accent-dark: #a8843b;
  --text: #1a1a1a;
  --text-light: #555;
  --text-muted: #888;
  --bg: #ffffff;
  --bg-light: #f5f7fa;
  --bg-dark: #0a3d62;
  --border: #e0e4e8;
  --radius: 8px;
  --radius-lg: 16px;
  --shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.12);
  --transition: 0.25s ease;
  --container: 1200px;
}

/* ===== Reset & Base ===== */
*, *::before, *::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Microsoft YaHei", "PingFang SC", "Helvetica Neue", Arial, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.7;
}

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

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

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

h1, h2, h3, h4, p {
  margin-top: 0;
}

ul, ol {
  margin: 0;
  padding: 0 0 0 1.2em;
}

/* ===== Layout ===== */
.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 20px;
}

.section {
  padding: 80px 0;
}

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

.section-dark {
  background: var(--bg-dark);
  color: #fff;
}

.section-header {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 48px;
}

.section-header h2 {
  font-size: 2rem;
  color: var(--primary);
  margin-bottom: 12px;
}

.section-dark .section-header h2 {
  color: #fff;
}

.section-header p {
  color: var(--text-light);
  font-size: 1.05rem;
}

.section-dark .section-header p {
  color: rgba(255, 255, 255, 0.8);
}

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

/* ===== Navigation ===== */
.main-nav {
  background: var(--primary);
  color: #fff;
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.1);
}

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

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  color: #fff;
  font-weight: 700;
  font-size: 1.1rem;
}

.logo img {
  width: 44px;
  height: 44px;
  object-fit: contain;
  border-radius: 50%;
  background: #fff;
}

.nav-menu {
  display: flex;
  list-style: none;
  gap: 6px;
  padding: 0;
  margin: 0;
}

.nav-menu a {
  display: block;
  padding: 8px 14px;
  color: rgba(255, 255, 255, 0.9);
  font-size: 0.95rem;
  border-radius: var(--radius);
  transition: background var(--transition), color var(--transition);
}

.nav-menu a:hover,
.nav-menu a.active {
  background: rgba(255, 255, 255, 0.12);
  color: #fff;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: space-between;
  width: 28px;
  height: 20px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
}

.nav-toggle span {
  display: block;
  height: 2px;
  width: 100%;
  background: #fff;
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 24px;
  border-radius: 50px;
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  transition: all var(--transition);
  border: 2px solid transparent;
  text-align: center;
}

.btn-primary {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}

.btn-primary:hover {
  background: var(--accent-dark);
  border-color: var(--accent-dark);
  color: #fff;
}

.btn-secondary {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}

.btn-secondary:hover {
  background: var(--primary-dark);
  border-color: var(--primary-dark);
  color: #fff;
}

.btn-outline {
  background: transparent;
  color: #fff;
  border-color: rgba(255, 255, 255, 0.6);
}

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

.btn-outline-light {
  background: transparent;
  color: #fff;
  border-color: #fff;
}

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

.btn-sm {
  padding: 6px 16px;
  font-size: 0.85rem;
}

.btn-block {
  width: 100%;
}

/* ===== Hero ===== */
.hero {
  position: relative;
  min-height: 620px;
  display: flex;
  align-items: center;
  color: #fff;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary-light) 100%);
  background-size: cover;
  background-position: center;
  z-index: -2;
}

.hero-bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background: rgba(6, 43, 68, 0.72);
  z-index: -1;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 760px;
  padding-top: 80px;
  padding-bottom: 80px;
}

.hero-tagline {
  font-size: 2.4rem;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: 4px;
  margin: 0 0 4px;
  line-height: 1;
}

.hero-tagline sup {
  font-size: 0.5em;
  vertical-align: super;
  font-weight: 600;
  margin-left: 1px;
}

.hero h1 {
  font-size: 3rem;
  margin-bottom: 10px;
  line-height: 1.2;
}

.hero-subtitle {
  font-size: 1.3rem;
  color: var(--accent);
  margin-bottom: 20px;
  letter-spacing: 1px;
}

.hero-lead {
  font-size: 1.15rem;
  line-height: 1.8;
  margin-bottom: 32px;
  opacity: 0.95;
}

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

/* ===== Page Hero ===== */
.page-hero {
  background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary-light) 100%);
  color: #fff;
  padding: 80px 0 60px;
  text-align: center;
}

.page-hero h1 {
  font-size: 2.4rem;
  margin-bottom: 8px;
}

.page-hero p {
  color: rgba(255, 255, 255, 0.8);
  font-size: 1.1rem;
}

/* ===== Value Cards ===== */
.value-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.value-card {
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 32px;
  box-shadow: var(--shadow);
  text-align: center;
}

.value-card .icon {
  width: 56px;
  height: 56px;
  margin: 0 auto 16px;
  background: var(--bg-light);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  color: var(--primary);
  font-weight: 700;
}

.value-card h3 {
  color: var(--primary);
  margin-bottom: 10px;
  font-size: 1.25rem;
}

.value-card p {
  color: var(--text-light);
  margin-bottom: 0;
}

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

.course-card {
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 32px;
  box-shadow: var(--shadow);
  border-top: 4px solid var(--primary);
  position: relative;
  transition: transform var(--transition), box-shadow var(--transition);
}

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

.course-card.featured {
  border-top-color: var(--accent);
}

.course-badge {
  display: inline-block;
  padding: 4px 12px;
  background: var(--primary);
  color: #fff;
  border-radius: 50px;
  font-size: 0.8rem;
  font-weight: 600;
  margin-bottom: 16px;
}

.course-card.featured .course-badge {
  background: var(--accent);
}

.course-card h3 {
  color: var(--primary);
  margin-bottom: 4px;
  font-size: 1.25rem;
}

.course-subtitle {
  color: var(--accent-dark);
  font-weight: 600;
  margin-bottom: 12px;
  font-size: 0.95rem;
}

.course-card p {
  color: var(--text-light);
  font-size: 0.95rem;
  margin-bottom: 16px;
}

.course-meta {
  list-style: none;
  padding: 0;
  margin-bottom: 20px;
  color: var(--text);
  font-size: 0.95rem;
}

.course-meta li {
  margin-bottom: 6px;
}

/* ===== Instructor Teaser ===== */
.instructor-teaser-grid {
  display: grid;
  grid-template-columns: 360px 1fr;
  gap: 48px;
  align-items: center;
}

.instructor-teaser-image img {
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  width: 100%;
  aspect-ratio: 3/4;
  object-fit: cover;
  background: var(--primary-light);
}

.instructor-teaser-content h2 {
  color: var(--accent);
  font-size: 1.2rem;
  margin-bottom: 4px;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.instructor-teaser-content h3 {
  font-size: 2.2rem;
  margin-bottom: 20px;
}

.instructor-teaser-content p {
  opacity: 0.9;
  margin-bottom: 16px;
}

/* ===== Schedule Table ===== */
.schedule-table-wrapper {
  overflow-x: auto;
  margin-bottom: 32px;
}

.schedule-table {
  width: 100%;
  border-collapse: collapse;
  background: #fff;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
}

.schedule-table th,
.schedule-table td {
  padding: 16px 20px;
  text-align: left;
  border-bottom: 1px solid var(--border);
}

.schedule-table th {
  background: var(--primary);
  color: #fff;
  font-weight: 600;
}

.schedule-table tbody tr:hover {
  background: var(--bg-light);
}

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

.testimonial-card {
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 28px;
  box-shadow: var(--shadow);
  margin: 0;
}

.testimonial-card p {
  font-size: 1rem;
  color: var(--text);
  margin-bottom: 16px;
  line-height: 1.8;
}

.testimonial-card footer {
  color: var(--text-muted);
  font-size: 0.9rem;
  font-weight: 600;
}

/* ===== About Page ===== */
.about-intro {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}

.about-text h2 {
  color: var(--primary);
  margin-bottom: 8px;
  font-size: 1.5rem;
}

.about-text p {
  color: var(--text-light);
  margin-bottom: 24px;
}

.about-image img {
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  width: 100%;
  aspect-ratio: 4/3;
  object-fit: cover;
  background: var(--bg-light);
}

.timeline {
  position: relative;
  max-width: 800px;
  margin: 0 auto;
  padding-left: 30px;
  border-left: 3px solid var(--primary);
}

.timeline-item {
  position: relative;
  padding-bottom: 32px;
}

.timeline-item::before {
  content: "";
  position: absolute;
  left: -39px;
  top: 0;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--accent);
  border: 3px solid #fff;
  box-shadow: 0 0 0 3px var(--primary);
}

.timeline-year {
  display: inline-block;
  font-weight: 700;
  color: var(--accent-dark);
  margin-bottom: 4px;
  font-size: 1.1rem;
}

.timeline-content h3 {
  color: var(--primary);
  margin-bottom: 6px;
}

.timeline-content p {
  color: var(--text-light);
  margin-bottom: 0;
}

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

.cert-card {
  background: var(--bg-light);
  border-radius: var(--radius);
  padding: 24px;
  text-align: center;
  border-top: 3px solid var(--primary);
}

.cert-card h3 {
  color: var(--primary);
  font-size: 1.05rem;
  margin-bottom: 10px;
}

.cert-card p {
  color: var(--text-light);
  font-size: 0.9rem;
  margin-bottom: 0;
}

/* ===== Course Detail ===== */
.course-detail {
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 40px;
  box-shadow: var(--shadow);
}

.course-detail-header {
  margin-bottom: 28px;
  border-bottom: 1px solid var(--border);
  padding-bottom: 20px;
}

.course-detail-header h2 {
  color: var(--primary);
  font-size: 1.6rem;
  margin-bottom: 0;
  margin-top: 12px;
}

.course-detail-grid {
  display: grid;
  grid-template-columns: 320px 1fr;
  gap: 40px;
}

.course-detail-info p {
  margin-bottom: 12px;
  color: var(--text-light);
}

.course-detail-info .btn {
  margin-top: 16px;
}

.course-detail-outline h3 {
  color: var(--primary);
  margin-bottom: 16px;
}

.outline-day {
  margin-bottom: 20px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--border);
}

.outline-day:last-child {
  border-bottom: none;
  margin-bottom: 0;
  padding-bottom: 0;
}

.outline-day h4 {
  color: var(--accent-dark);
  font-size: 1.05rem;
  margin-bottom: 8px;
}

.outline-day ul {
  color: var(--text-light);
  font-size: 0.95rem;
}

.outline-day li {
  margin-bottom: 4px;
}

/* ===== Instructor Page ===== */
.instructor-profile {
  display: grid;
  grid-template-columns: 360px 1fr;
  gap: 48px;
  align-items: start;
}

.instructor-image img {
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  width: 100%;
  aspect-ratio: 3/4;
  object-fit: cover;
  background: var(--bg-light);
}

.instructor-content h2 {
  color: var(--primary);
  font-size: 2rem;
  margin-bottom: 8px;
}

.instructor-content h2 span {
  font-size: 1rem;
  color: var(--accent-dark);
  font-weight: 600;
  margin-left: 12px;
}

.instructor-title {
  color: var(--text-light);
  font-weight: 600;
  margin-bottom: 20px;
}

.instructor-content h3 {
  color: var(--primary);
  margin-top: 28px;
  margin-bottom: 12px;
  font-size: 1.2rem;
}

.instructor-content p {
  color: var(--text-light);
  margin-bottom: 14px;
}

.credential-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 8px 24px;
  color: var(--text-light);
  font-size: 0.95rem;
}

/* ===== Literature ===== */
.literature-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.literature-card {
  background: #fff;
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow);
  transition: transform var(--transition);
}

.literature-card:hover {
  transform: translateY(-3px);
}

.literature-cover {
  width: 100%;
  aspect-ratio: 3/4;
  background: var(--bg-light);
  border-radius: var(--radius);
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  font-size: 0.85rem;
}

.literature-card h3 {
  color: var(--primary);
  font-size: 1.05rem;
  margin-bottom: 6px;
}

.literature-card .author {
  color: var(--accent-dark);
  font-weight: 600;
  font-size: 0.9rem;
  margin-bottom: 10px;
}

.literature-card p {
  color: var(--text-light);
  font-size: 0.9rem;
  margin-bottom: 16px;
}

.literature-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.literature-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
  background: #fff;
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow);
}

.literature-meta h3 {
  color: var(--primary);
  font-size: 1.1rem;
  margin-bottom: 6px;
}

.literature-meta p {
  color: var(--text-light);
  font-size: 0.95rem;
  margin-bottom: 0;
}

.tag {
  display: inline-block;
  padding: 3px 10px;
  background: var(--bg-light);
  color: var(--primary);
  border-radius: 50px;
  font-size: 0.75rem;
  font-weight: 600;
  margin-bottom: 8px;
}

.video-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.video-card {
  background: #fff;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
}

.video-thumb {
  aspect-ratio: 16/9;
  background: var(--bg-light);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
}

.video-card h3 {
  padding: 16px;
  font-size: 1rem;
  color: var(--primary);
  margin-bottom: 0;
}

.contact-form-wrapper,
.apply-form-wrapper,
.apply-notice,
.contact-info {
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 32px;
  box-shadow: var(--shadow);
}

.contact-form-wrapper h2,
.apply-form-wrapper h2,
.apply-notice h2,
.contact-info h2 {
  text-align: left;
  margin-bottom: 24px;
}

.contact-form-wrapper h2,
.apply-form-wrapper h2,
.apply-notice h2,
.contact-info h2 {
  color: var(--primary);
  font-size: 1.4rem;
}

.form-row {
  margin-bottom: 18px;
}

.form-row label {
  display: block;
  margin-bottom: 6px;
  font-weight: 600;
  color: var(--text);
  font-size: 0.95rem;
}

.form-row input,
.form-row select,
.form-row textarea {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 0.95rem;
  font-family: inherit;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.form-row input:focus,
.form-row select:focus,
.form-row textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(10, 61, 98, 0.1);
}

.form-row input[type="checkbox"] {
  width: auto;
  margin-right: 8px;
}

/* 蜜罐字段：对人不可见，仅用于拦截自动填表机器人 */
.hp-field {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

/* 表单隐私说明小字 */
.form-note {
  margin: 10px 0 0;
  font-size: 0.8rem;
  line-height: 1.6;
  color: var(--text-muted);
}

/* 表单提交状态提示 */
.form-status {
  margin: 12px 0 0;
  font-size: 0.9rem;
  min-height: 1.2em;
}

.form-status.is-pending {
  color: var(--text-muted);
}

.form-status.is-success {
  color: #1e8e3e;
}

.form-status.is-error {
  color: #c0392b;
}

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

.cert-sample {
  text-align: center;
}

.cert-sample img {
  width: 100%;
  aspect-ratio: 3/4;
  object-fit: contain;
  background: var(--bg-light);
  border-radius: var(--radius);
  margin-bottom: 12px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  transition: transform var(--transition);
}

.cert-sample img:hover {
  transform: scale(1.03);
}

.cert-sample p {
  color: var(--text-light);
  font-weight: 600;
}

/* ===== Contact Page ===== */
.contact-layout {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 40px;
  align-items: start;
}

.contact-list {
  list-style: none;
  padding: 0;
  margin-bottom: 24px;
}

.contact-list li {
  margin-bottom: 18px;
}

.contact-list strong {
  display: block;
  color: var(--primary);
  margin-bottom: 4px;
}

.contact-list p {
  color: var(--text-light);
  margin: 0;
}

.social-links {
  display: flex;
  gap: 12px;
}

.social-links a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 8px 16px;
  background: var(--bg-light);
  border-radius: 50px;
  color: var(--primary);
  font-size: 0.9rem;
  font-weight: 600;
  transition: background var(--transition);
}

.social-links a:hover {
  background: var(--primary);
  color: #fff;
}
.social-links .qrcode-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  background: rgba(255, 255, 255, 0.95);
  padding: 8px 12px 6px;
  border-radius: 8px;
}

.social-links .qrcode-item img {
  width: 80px;
  height: 80px;
  object-fit: contain;
  border-radius: 4px;
}

.social-links .qrcode-item p {
  color: var(--primary);
  font-size: 0.78rem;
  font-weight: 600;
  margin: 0;
}


/* 地图通栏：区块去掉上下留白，图片完全贴边 */
.map-section {
  padding: 0;
}

.map-block {
  aspect-ratio: 21/9;
  line-height: 0;
}

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

/* ===== Gallery ===== */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.gallery-item {
  margin: 0;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  background: #fff;
}

.gallery-item img {
  width: 100%;
  aspect-ratio: 4/3;
  object-fit: cover;
  background: var(--bg-light);
}

.gallery-item figcaption {
  padding: 12px 16px;
  color: var(--text-light);
  font-size: 0.9rem;
  text-align: center;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.stat-card {
  background: var(--primary);
  color: #fff;
  border-radius: var(--radius-lg);
  padding: 32px;
  text-align: center;
}

.stat-number {
  display: block;
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--accent);
  line-height: 1;
  margin-bottom: 10px;
}

.stat-label {
  font-size: 1rem;
  opacity: 0.9;
}

/* ===== Apply Page ===== */
.apply-layout {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 40px;
  align-items: start;
}

.apply-notice ol {
  color: var(--text-light);
  padding-left: 1.2em;
  margin-bottom: 24px;
}

.apply-notice li {
  margin-bottom: 10px;
}

.apply-support {
  padding: 20px;
  background: var(--bg-light);
  border-radius: var(--radius);
}

.apply-support h3 {
  color: var(--primary);
  margin-bottom: 10px;
}

.apply-support p {
  color: var(--text-light);
  margin-bottom: 6px;
}

/* ===== Footer ===== */
.site-footer {
  background: var(--primary-dark);
  color: rgba(255, 255, 255, 0.8);
  padding: 60px 0 0;
}

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

.footer-brand .logo {
  margin-bottom: 16px;
}

.footer-brand p {
  line-height: 1.8;
  max-width: 360px;
}

.footer-links h4,
.footer-contact h4 {
  color: #fff;
  margin-bottom: 16px;
  font-size: 1.1rem;
}

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

.footer-links li {
  margin-bottom: 8px;
}

.footer-links a,
.footer-contact a {
  color: rgba(255, 255, 255, 0.75);
}

.footer-links a:hover,
.footer-contact a:hover {
  color: #fff;
}

.footer-contact p {
  margin-bottom: 8px;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding: 20px 0;
  text-align: center;
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.6);
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .course-grid,
  .value-grid,
  .testimonial-grid,
  .literature-grid,
  .video-grid,
  .gallery-grid,
  .cert-grid,
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .instructor-teaser-grid,
  .instructor-profile,
  .about-intro,
  .course-detail-grid,
  .contact-layout,
  .apply-layout {
    grid-template-columns: 1fr;
  }

  .instructor-teaser-image,
  .instructor-image,
  .about-image {
    max-width: 400px;
    margin: 0 auto;
  }
}

@media (max-width: 768px) {
  .nav-menu {
    display: none;
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    background: var(--primary);
    flex-direction: column;
    padding: 16px 20px;
    gap: 4px;
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.15);
  }

  .nav-menu.open {
    display: flex;
  }

  .nav-toggle {
    display: flex;
  }

  .btn-apply {
    display: none;
  }

  .hero h1 {
    font-size: 2.2rem;
  }

  .hero-subtitle {
    font-size: 1.05rem;
  }

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

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

  .hero-actions .btn {
    width: 100%;
  }

  .section {
    padding: 56px 0;
  }

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

  .course-grid,
  .value-grid,
  .testimonial-grid,
  .literature-grid,
  .video-grid,
  .gallery-grid,
  .cert-grid,
  .stats-grid,
  .credential-list {
    grid-template-columns: 1fr;
  }

  .course-detail {
    padding: 24px;
  }

  .literature-row {
    flex-direction: column;
    align-items: flex-start;
  }

  .schedule-table th,
  .schedule-table td {
    padding: 12px 14px;
    font-size: 0.9rem;
  }

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

/* ===== Books Grid ===== */
.books-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 20px;
}

.book-card {
  background: #fff;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
  transition: transform var(--transition);
}

.book-card:hover {
  transform: translateY(-3px);
}

.book-cover {
  aspect-ratio: 3/4;
  background: var(--bg-light);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

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

.book-placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--primary-light) 0%, var(--primary-dark) 100%);
}

.book-placeholder span {
  font-size: 3rem;
  font-weight: 700;
  color: rgba(255,255,255,0.4);
  text-transform: uppercase;
}

.book-info {
  padding: 14px 16px;
}

.book-role {
  display: inline-block;
  padding: 2px 8px;
  background: var(--accent);
  color: #fff;
  border-radius: 4px;
  font-size: 0.75rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.book-info h3 {
  font-size: 0.85rem;
  color: var(--primary);
  line-height: 1.4;
  margin: 0;
}

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