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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    color: #333;
    line-height: 1.8;
    overflow-x: hidden;
    background: white;
}

/* Căn đều 2 bên cho tất cả đoạn văn mặc định */
p {
    text-align: justify;
}

/* Loại trừ các phần tử không cần căn đều (tiêu đề, nút, v.v.) */
.hero-title,
.section-title,
.content-section h3,
.step-content h4,
.instructor-card h3,
.pricing-header h2,
.registration-form h3,
.footer h2,
.benefit-card h3,
.refund-policy,
.guarantee,
.course-summary,
.testimonial-intro:last-child,
.cta-button,
.submit-btn {
    text-align: inherit;
}

/* Các phần tử cần căn đều đặc biệt */
.footer-motto {
    text-align: center;
}

.promo-note p {
    text-align: center;
}

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

.container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header */
header {
    background: white;
    border-bottom: 1px solid #e0e0e0;
    padding: 20px 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
}

header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: relative;
}

.logo {
    font-size: 28px;
    font-weight: bold;
    color: #00786a;
    display: flex;
    align-items: center;
    transition: transform 0.3s ease;
}

.logo:hover {
    transform: scale(1.05);
}

.logo-img {
    height: 50px;
    width: auto;
    transition: transform 0.3s ease;
}

.logo-text {
    font-size: 28px;
    font-weight: bold;
    color: #00786a;
}

/* Menu Toggle Button (Hamburger) */
.menu-toggle {
    display: none;
    flex-direction: column;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    gap: 5px;
    z-index: 1001;
}

.menu-toggle span {
    width: 28px;
    height: 3px;
    background: #00786a;
    border-radius: 3px;
    transition: all 0.3s ease;
}

.menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(8px, 8px);
}

.menu-toggle.active span:nth-child(2) {
    opacity: 0;
}

.menu-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -7px);
}

nav.nav-menu {
    display: flex;
    gap: 25px;
    transition: all 0.3s ease;
}

nav.nav-menu a {
    text-decoration: none;
    color: #333;
    font-weight: 500;
    padding: 10px 18px;
    transition: all 0.3s ease;
    font-size: 16px;
    border-radius: 6px;
    position: relative;
}

nav.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: 5px;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 2px;
    background: #00786a;
    transition: width 0.3s ease;
}

nav.nav-menu a:hover::after {
    width: calc(100% - 36px);
}

nav.nav-menu a:hover {
    color: #00786a;
    background: rgba(0, 120, 106, 0.05);
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, #1b877b 0%, #00786a 100%);
    color: #333;
    padding: 100px 0 80px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg width="100" height="100" xmlns="http://www.w3.org/2000/svg"><circle cx="50" cy="50" r="2" fill="rgba(255,255,255,0.1)"/></svg>');
    opacity: 0.3;
    pointer-events: none;
}

.hero .container {
    position: relative;
    z-index: 1;
}

.hero-tagline h2 {
    font-size: 18px;
    margin-bottom: 30px;
    font-weight: 400;
    color: white;
    text-transform: none;
    letter-spacing: 0;
    text-align: justify;
}

.hero-title {
    font-size: 36px;
    font-weight: 700;
    margin-bottom: 25px;
    line-height: 1.4;
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
    color: white;
}

.hero-subtitle {
    font-size: 20px;
    margin-bottom: 25px;
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
    font-weight: 400;
    color: white;
    text-align: justify;
}

.hero-description {
    font-size: 18px;
    margin-bottom: 40px;
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
    line-height: 1.8;
    color: white;
    text-align: center;
}

.hero-note {
    margin-bottom: 40px;
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
    background: transparent;
    padding: 0;
    border-radius: 0;
    border: none;
    box-shadow: none;
}

.hero-note-content {
    font-size: 19px;
    line-height: 2;
    color: white;
    text-align: justify;
    margin: 0;
    font-weight: 500;
    letter-spacing: 0.3px;
    font-style: italic;
    max-width: 100%;
}

.hero-note-content strong {
    color: #000000;
    font-weight: 700;
    font-size: 20px;
    background: transparent;
    padding: 0;
    border-radius: 0;
    display: inline;
    font-style: normal;
    text-shadow: none;
}

.hero-cta-text {
    font-size: 18px;
    margin-bottom: 30px;
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
}

.cta-button {
    display: inline-block;
    background: linear-gradient(135deg, #00786a 0%, #005a4f 100%);
    color: white;
    padding: 18px 45px;
    font-size: 18px;
    font-weight: 600;
    text-decoration: none;
    border-radius: 50px;
    transition: all 0.3s ease;
    text-transform: none;
    box-shadow: 0 4px 15px rgba(0, 120, 106, 0.3);
    position: relative;
    overflow: hidden;
}

.cta-button::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.2);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.cta-button:hover::before {
    width: 300px;
    height: 300px;
}

.cta-button:hover {
    background: linear-gradient(135deg, #005a4f 0%, #00786a 100%);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 120, 106, 0.4);
}

.cta-button:active {
    transform: translateY(0);
}

/* Section Styles */
section {
    padding: 80px 0;
    transition: all 0.3s ease;
}

@media (max-width: 768px) {
    section {
        padding: 60px 0;
    }
}

.section-title {
    font-size: 32px;
    text-align: left;
    margin-bottom: 30px;
    color: #00786a;
    font-weight: 700;
    line-height: 1.3;
}

.section-intro {
    font-size: 18px;
    margin-bottom: 20px;
    text-align: center;
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
    color: #555;
}

/* Benefits Section */
.benefits {
    background: rgb(225, 247, 250);
}

.benefits-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.benefit-card {
    background: white;
    padding: 35px;
    border-radius: 20px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    text-align: center;
    border: 1px solid rgba(0, 120, 106, 0.1);
}

.benefit-card:hover {
    transform: translateY(-12px) scale(1.02);
    box-shadow: 0 15px 40px rgba(0, 120, 106, 0.25);
    border-color: rgba(0, 120, 106, 0.3);
}

.benefit-icon {
    font-size: 50px;
    margin-bottom: 15px;
}

.benefit-card h3 {
    font-size: 22px;
    color: #00786a;
    margin-bottom: 15px;
}

.benefit-card p {
    color: #666;
    line-height: 1.6;
    text-align: justify;
}

/* Course Content Section */
.course-content {
    background: linear-gradient(to bottom, white 0%, rgb(225, 247, 250) 100%);
}

.content-list {
    max-width: 900px;
    margin: 0 auto;
}

.content-item {
    background: rgb(225, 247, 250);
    padding: 25px;
    margin-bottom: 18px;
    border-radius: 12px;
    border-left: 5px solid #00786a;
    font-size: 18px;
    transition: all 0.3s ease;
    text-align: justify;
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.05);
}

.content-item:hover {
    background: white;
    transform: translateX(12px);
    box-shadow: 0 6px 20px rgba(0, 120, 106, 0.15);
}

.course-summary {
    margin-top: 30px;
    text-align: center;
    font-size: 20px;
    color: #00786a;
    font-weight: 500;
    padding: 20px;
    background: rgb(225, 247, 250);
    border-radius: 10px;
}

/* Who Is This For Section */
.who-is-this-for {
    background: rgb(225, 247, 250);
}

.target-audience {
    max-width: 900px;
    margin: 0 auto;
}

.audience-item {
    background: white;
    padding: 25px;
    margin-bottom: 15px;
    border-radius: 10px;
    font-size: 18px;
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.1);
    transition: all 0.3s;
    text-align: justify;
}

.audience-item:hover {
    transform: translateX(10px);
    box-shadow: 0 5px 20px rgba(0, 120, 106, 0.3);
}

/* Testimonials Section */
.testimonials {
    background: white;
}

.testimonial-content {
    max-width: 900px;
    margin: 0 auto;
    background: rgb(225, 247, 250);
    padding: 40px;
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
}

.testimonial-intro {
    font-size: 18px;
    line-height: 1.8;
    margin-bottom: 20px;
    color: #555;
    text-align: justify;
}

.testimonial-intro:last-child {
    margin-bottom: 0;
    font-size: 20px;
    color: #00786a;
    text-align: center;
    padding: 20px;
    background: white;
    border-radius: 10px;
    border-left: 4px solid #00786a;
}

/* Testimonials Section - Cảm nhận học viên */
.testimonials-section {
    margin-top: 60px;
}

.testimonials-box {
    max-width: 1000px;
    margin: 0 auto;
    background: white;
    border-radius: 18px;
    padding: 45px 50px;
    border: 2px solid #00786a;
    box-shadow: 0 5px 20px rgba(0, 120, 106, 0.1);
}

.testimonials-list {
    display: flex;
    flex-direction: column;
    gap: 30px;
    margin-top: 40px;
}

.testimonial-item {
    padding: 25px 30px;
    background: rgba(225, 247, 250, 0.3);
    border-radius: 12px;
    border-left: 4px solid #00786a;
    transition: all 0.3s ease;
}

.testimonial-item:hover {
    background: rgba(225, 247, 250, 0.5);
    transform: translateX(5px);
}

.testimonial-header {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 18px;
}

.testimonial-header i {
    font-size: 36px;
    color: #00786a;
    flex-shrink: 0;
}

.testimonial-name {
    display: flex;
    flex-direction: column;
    gap: 5px;
}

.testimonial-name strong {
    font-size: 20px;
    color: #00786a;
    font-weight: 700;
}

.testimonial-name span {
    font-size: 16px;
    color: #666;
    font-style: italic;
}

.testimonial-item p {
    font-size: 18px;
    line-height: 1.9;
    color: #444;
    text-align: justify;
    margin: 0;
    letter-spacing: 0.2px;
}

/* Pricing Section */
.pricing {
    background: rgb(225, 247, 250);
    color: #333;
    padding: 20px 0 60px 0;
}

.pricing-card {
    background: white;
    color: #333;
    border-radius: 8px;
    padding: 0;
    max-width: 900px;
    margin: 0 auto;
    border: none;
}

.pricing-header {
    text-align: left;
    margin-bottom: 30px;
}

.pricing-header h2 {
    font-size: 32px;
    color: #00786a;
    margin-bottom: 15px;
    font-weight: 700;
}

.pricing-title-before-form {
    font-size: 32px;
    color: #00786a;
    margin: 30px 0 20px 0;
    font-weight: 700;
    text-align: center;
}

.pricing-note {
    font-size: 16px;
    line-height: 1.8;
    color: #666;
    margin-bottom: 30px;
    padding: 20px;
    background: rgb(225, 247, 250);
    border-radius: 10px;
    text-align: justify;
    font-style: italic;
}

.price {
    margin: 30px 0;
}

.pricing-policies {
    margin-top: 20px;
}

.old-price {
    display: block;
    font-size: 32px;
    text-decoration: line-through;
    color: #999;
    margin-bottom: 10px;
}

.new-price {
    display: block;
    font-size: 48px;
    font-weight: bold;
    color: #00786a;
}

.refund-policy {
    background: #00786a;
    color: white;
    padding: 15px;
    border-radius: 10px;
    margin: 15px 0;
    font-weight: bold;
    text-align: center;
}

.guarantee {
    background: #00786a;
    color: white;
    padding: 15px;
    border-radius: 10px;
    margin: 15px 0;
    font-weight: bold;
    text-align: center;
}

.bonuses {
    background: white;
    padding: 35px 40px;
    border-radius: 18px;
    border: 2px solid #00786a;
    box-shadow: 0 5px 20px rgba(0, 120, 106, 0.1);
    margin-bottom: 40px;
}

.bonuses h3 {
    color: #00786a;
    font-size: 26px;
    font-weight: 700;
    margin-bottom: 30px;
    text-align: center;
    padding-bottom: 15px;
    border-bottom: 2px solid rgba(0, 120, 106, 0.2);
}

.bonus-item {
    display: flex;
    align-items: flex-start;
    gap: 20px;
    padding: 20px 25px;
    margin-bottom: 18px;
    background: rgba(225, 247, 250, 0.4);
    border-radius: 12px;
    border-left: 4px solid #00786a;
    transition: all 0.3s ease;
}

.bonus-item:hover {
    background: rgba(225, 247, 250, 0.6);
    transform: translateX(5px);
}

.bonus-icon {
    flex-shrink: 0;
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    color: white;
    font-size: 24px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
    transition: all 0.3s ease;
}

.bonus-item:hover .bonus-icon {
    transform: scale(1.1) rotate(5deg);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
}

/* Màu sắc cho từng quà tặng */
.bonus-1 .bonus-icon {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.bonus-1 {
    border-left: 4px solid #667eea;
}

.bonus-2 .bonus-icon {
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
}

.bonus-2 {
    border-left: 4px solid #f5576c;
}

.bonus-3 .bonus-icon {
    background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
}

.bonus-3 {
    border-left: 4px solid #4facfe;
}

.bonus-4 .bonus-icon {
    background: linear-gradient(135deg, #43e97b 0%, #38f9d7 100%);
}

.bonus-4 {
    border-left: 4px solid #43e97b;
}

.bonus-content {
    flex: 1;
}

.bonus-content p {
    font-size: 18px;
    line-height: 2;
    color: #444;
    text-align: justify;
    margin: 0;
    letter-spacing: 0.2px;
}

.bonus-content strong {
    color: #00786a;
    font-weight: 700;
}

.bonus-certificate {
    background: linear-gradient(135deg, rgba(255, 107, 107, 0.1) 0%, rgba(255, 159, 64, 0.1) 100%);
    border-left: 4px solid #ff6b6b;
}

.bonus-certificate .bonus-icon {
    background: linear-gradient(135deg, #ff6b6b 0%, #ff8e53 100%);
}

.bonus-certificate .bonus-content strong {
    color: #ff6b6b;
    font-size: 20px;
}

/* Registration Form */
.registration-form {
    background: linear-gradient(135deg, rgb(225, 247, 250) 0%, white 100%);
    padding: 50px;
    border-radius: 20px;
    margin-top: 30px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
    border: 1px solid rgba(0, 120, 106, 0.1);
}

.registration-form .pricing-note {
    text-align: center;
    font-size: 16px;
    color: #666;
    margin: 10px 0 25px 0;
    padding: 0;
    background: transparent;
    font-style: italic;
}

.registration-form .pricing-note strong {
    font-weight: 700;
    color: #00786a;
    font-size: 18px;
    font-style: normal;
}

.registration-form .guarantee-text {
    text-align: center;
    font-size: 16px;
    color: #00786a;
    margin: 10px 0;
    padding: 0;
    background: transparent;
    font-weight: 600;
    line-height: 1.6;
}

.registration-form h3 {
    color: #00786a;
    font-size: 28px;
    margin-bottom: 30px;
    text-align: center;
    font-weight: 700;
}

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

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: #333;
}

.form-group input {
    width: 100%;
    padding: 14px 18px;
    border: 2px solid #e0e0e0;
    border-radius: 8px;
    font-size: 16px;
    transition: all 0.3s ease;
    background: white;
    font-family: inherit;
}

.form-group input:focus {
    outline: none;
    border-color: #00786a;
    box-shadow: 0 0 0 3px rgba(0, 120, 106, 0.1);
    transform: translateY(-1px);
}

.form-group input:hover {
    border-color: #00786a;
}

.submit-btn {
    width: 100%;
    background: linear-gradient(135deg, #00786a 0%, #005a4f 100%);
    color: white;
    padding: 16px;
    font-size: 18px;
    font-weight: 600;
    border: none;
    border-radius: 50px;
    cursor: pointer;
    transition: all 0.3s ease;
    text-transform: none;
    text-align: center;
    box-shadow: 0 4px 15px rgba(0, 120, 106, 0.3);
    position: relative;
    overflow: hidden;
}

.submit-btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.2);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.submit-btn:hover::before {
    width: 400px;
    height: 400px;
}

.submit-btn:hover {
    background: linear-gradient(135deg, #005a4f 0%, #00786a 100%);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 120, 106, 0.4);
}

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

.submit-btn:disabled {
    opacity: 0.7;
    cursor: not-allowed;
}

/* Instructor Section */
.instructor {
    background: white;
}

.instructor-card {
    max-width: 900px;
    margin: 0 auto;
    background: white;
    padding: 0;
}

/* Instructor Intro Box - Phần giới thiệu giảng viên */
.instructor-intro-box {
    max-width: 1000px;
    margin: 0 auto;
    background: white;
    border-radius: 18px;
    padding: 45px 50px;
    border: 2px solid #00786a;
    box-shadow: 0 5px 20px rgba(0, 120, 106, 0.1);
}

.instructor-intro-title {
    font-size: 32px;
    font-weight: 800;
    color: #00786a;
    margin: 0 0 10px 0;
    text-align: center;
    line-height: 1.3;
}

.instructor-intro-subtitle {
    font-size: 20px;
    color: #666;
    text-align: center;
    margin: 0 0 40px 0;
    font-weight: 500;
    font-style: italic;
}

.instructor-intro-content {
    max-width: 900px;
    margin: 0 auto;
}

.instructor-intro-content p {
    font-size: 19px;
    line-height: 2;
    margin-bottom: 25px;
    color: #444;
    text-align: justify;
    letter-spacing: 0.2px;
}

.instructor-intro-content p:last-child {
    margin-bottom: 0;
}

.instructor-note-box {
    background: rgba(225, 247, 250, 0.5);
    padding: 25px 30px;
    border-radius: 12px;
    border-left: 4px solid #00786a;
    margin: 30px 0;
}

.instructor-note-box p {
    font-size: 19px;
    line-height: 2;
    color: #333;
    text-align: justify;
    margin: 0;
}

.instructor-note-box p strong {
    color: #00786a;
    font-weight: 700;
}

.instructor-card h3 {
    color: #00786a;
    font-size: 24px;
    margin-bottom: 20px;
}

.instructor-card p {
    font-size: 18px;
    line-height: 1.8;
    margin-bottom: 20px;
    color: #333;
    text-align: justify;
}

.instructor-role {
    font-size: 20px;
    color: #666;
    margin-bottom: 25px;
    font-style: italic;
    text-align: justify;
}

.instructor-info {
    list-style: none;
    margin-bottom: 25px;
}

.instructor-info li {
    padding: 15px;
    margin-bottom: 10px;
    background: white;
    border-radius: 8px;
    border-left: 4px solid #00786a;
    font-size: 16px;
    line-height: 1.6;
    text-align: justify;
}

.instructor-philosophy {
    background: white;
    padding: 20px;
    border-radius: 10px;
    font-size: 18px;
    line-height: 1.8;
    color: #555;
    border-left: 4px solid #00786a;
    text-align: justify;
}

/* Footer */
.footer {
    background: white;
    color: #333;
    padding: 60px 0 40px;
    text-align: left;
    border-top: 1px solid #e0e0e0;
}

.footer h2 {
    font-size: 28px;
    margin-bottom: 20px;
    color: #00786a;
    font-weight: 700;
}

.contact-info {
    max-width: 900px;
    margin: 0 auto 30px;
    text-align: left;
    background: white;
    padding: 0;
}

.contact-info p {
    margin-bottom: 12px;
    font-size: 16px;
    color: #333;
    text-align: justify;
}

.footer-motto {
    font-size: 22px;
    font-weight: 500;
    margin: 25px 0;
    color: #00786a;
    font-style: italic;
}

.copyright {
    margin-top: 30px;
    padding-top: 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.2);
    color: #bbb;
}

/* Social Media Links */
.social-links {
    margin: 40px 0 30px;
    padding: 30px 0;
    border-top: 2px solid #e0e0e0;
    border-bottom: 2px solid #e0e0e0;
}

.social-links h4 {
    font-size: 22px;
    color: #00786a;
    margin-bottom: 25px;
    text-align: center;
    font-weight: 700;
}

.social-icons-row {
    display: flex;
    flex-direction: row;
    flex-wrap: wrap;
    justify-content: center;
    align-items: center;
    gap: 15px;
    max-width: 1200px;
    margin: 0 auto;
}

.social-link {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 14px 20px;
    background: linear-gradient(135deg, #00786a 0%, #005a4f 100%);
    color: white;
    text-decoration: none;
    border-radius: 12px;
    font-size: 15px;
    font-weight: 500;
    transition: all 0.3s ease;
    box-shadow: 0 4px 12px rgba(0, 120, 106, 0.25);
    flex: 1 1 auto;
    min-width: 160px;
    max-width: 280px;
    justify-content: center;
    white-space: nowrap;
    text-align: center;
}

.social-link:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(0, 120, 106, 0.4);
    background: linear-gradient(135deg, #005a4f 0%, #00786a 100%);
}

.social-icon {
    font-size: 20px;
    line-height: 1;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.social-icon i {
    font-size: 18px;
}

.social-text {
    line-height: 1.2;
}

.youtube-link {
    background: linear-gradient(135deg, #FF0000 0%, #CC0000 100%);
    box-shadow: 0 4px 12px rgba(255, 0, 0, 0.25);
}

.youtube-link:hover {
    background: linear-gradient(135deg, #CC0000 0%, #FF0000 100%);
    box-shadow: 0 6px 20px rgba(255, 0, 0, 0.4);
}

.facebook-link {
    background: linear-gradient(135deg, #1877F2 0%, #0d5fcc 100%);
    box-shadow: 0 4px 12px rgba(24, 119, 242, 0.25);
}

.facebook-link:hover {
    background: linear-gradient(135deg, #0d5fcc 0%, #1877F2 100%);
    box-shadow: 0 6px 20px rgba(24, 119, 242, 0.4);
}

/* Course Description Section */
.course-description-section {
    background: rgb(225, 247, 250);
    padding: 60px 0 20px 0;
}

/* Main Content Section */
.main-content {
    background: linear-gradient(to bottom, rgb(225, 247, 250) 0%, white 100%);
    padding: 80px 0;
}

.content-block {
    max-width: 900px;
    margin: 0 auto;
}

.content-block p {
    font-size: 18px;
    line-height: 1.8;
    margin-bottom: 20px;
    text-align: justify;
    color: #333;
}

/* Intro Box - Giới Thiệu Khóa Học */
.intro-box {
    max-width: 1000px;
    margin: 0 auto;
    background: white;
    border: 3px solid #00786a;
    border-radius: 20px;
    padding: 50px 45px;
    box-shadow: 0 10px 40px rgba(0, 120, 106, 0.15);
    position: relative;
    overflow: hidden;
}

.intro-box::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 5px;
    background: linear-gradient(135deg, #00786a 0%, #005a4f 50%, #00786a 100%);
}

.intro-title {
    font-size: 36px;
    color: #00786a;
    font-weight: 800;
    margin-bottom: 15px;
    text-align: center;
    position: relative;
    padding-bottom: 20px;
}


.intro-subtitle {
    font-size: 22px;
    color: #005a4f;
    font-weight: 700;
    margin-bottom: 35px;
    text-align: center;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.intro-content {
    background: linear-gradient(135deg, rgba(225, 247, 250, 0.3) 0%, rgba(255, 255, 255, 0.1) 100%);
    padding: 35px;
    border-radius: 15px;
    border: 1px solid rgba(0, 120, 106, 0.1);
}

.intro-content p {
    font-size: 19px;
    line-height: 2;
    margin-bottom: 25px;
    text-align: justify;
    color: #444;
    letter-spacing: 0.2px;
}

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

/* Info Card - Khung nền bo tròn cho các phần thông tin */
.info-card {
    background: white;
    border-radius: 20px;
    padding: 40px 45px;
    box-shadow: 0 8px 30px rgba(0, 120, 106, 0.12);
    border: 2px solid rgba(0, 120, 106, 0.1);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.info-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(135deg, #00786a 0%, #005a4f 50%, #00786a 100%);
}

.info-card:hover {
    box-shadow: 0 12px 40px rgba(0, 120, 106, 0.2);
    transform: translateY(-3px);
    border-color: rgba(0, 120, 106, 0.2);
}

.info-card .section-title {
    margin-bottom: 30px;
}

.info-card .content-section {
    margin: 0;
}

.example-box {
    background: linear-gradient(135deg, rgb(225, 247, 250) 0%, white 100%);
    padding: 30px;
    border-radius: 12px;
    margin: 30px 0;
    border-left: 5px solid #00786a;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
}

.example-box:hover {
    box-shadow: 0 8px 25px rgba(0, 120, 106, 0.15);
}

.example-box p {
    margin-bottom: 15px;
    font-size: 18px;
    line-height: 1.8;
    text-align: justify;
    color: #333;
}

.example-note {
    font-style: italic;
    color: #00786a;
    font-weight: 500;
    margin-top: 15px;
    text-align: justify;
}

.warning-box {
    background: linear-gradient(135deg, rgb(225, 247, 250) 0%, white 100%);
    border: 3px solid #00786a;
    padding: 30px;
    border-radius: 15px;
    margin: 40px auto;
    max-width: 900px;
    box-shadow: 0 5px 20px rgba(0, 120, 106, 0.15);
    transition: all 0.3s ease;
}

.warning-box:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 30px rgba(0, 120, 106, 0.2);
}

.warning-box h3 {
    color: #00786a;
    font-size: 18px;
    line-height: 1.8;
    font-weight: 500;
    margin: 0;
    text-align: justify;
}

/* Course Content New Styles */
.content-section {
    max-width: 900px;
    margin: 0 auto 40px;
}

.content-section h3 {
    color: #00786a;
    font-size: 24px;
    margin-bottom: 20px;
    font-weight: 600;
}

.content-section p {
    font-size: 18px;
    line-height: 1.8;
    margin-bottom: 15px;
    text-align: justify;
    color: #333;
}

.content-section p i {
    color: #00786a;
    margin-right: 10px;
    font-size: 20px;
    vertical-align: middle;
}

.techniques-list {
    list-style: disc;
    padding-left: 30px;
    margin: 25px 0;
}

.techniques-list li {
    background: white;
    padding: 8px 0;
    margin-bottom: 8px;
    border: none;
    border-left: none;
    font-size: 18px;
    line-height: 1.8;
    color: #333;
    list-style-position: outside;
    text-align: justify;
}

.note-text {
    background: rgb(225, 247, 250);
    padding: 20px;
    border-radius: 8px;
    border-left: 4px solid #00786a;
    margin-top: 25px;
    color: #00786a;
    font-size: 18px;
    line-height: 1.8;
    text-align: justify;
}

.requirement-box {
    background: rgb(225, 247, 250);
    border: 2px solid #00786a;
    padding: 25px;
    border-radius: 8px;
    margin: 40px auto;
    max-width: 900px;
}

.requirement-box p {
    color: #00786a;
    font-size: 18px;
    margin: 0;
    line-height: 1.8;
    text-align: justify;
}

/* Platform Security Section */
.platform-security {
    background: white;
    padding: 80px 0;
}

/* Learning Method Section */
/* Course Content Section */
.course-content {
    background: white;
    padding: 60px 0;
}

.course-content-box {
    max-width: 1000px;
    margin: 0 auto;
    background: white;
    border-radius: 18px;
    padding: 45px 50px;
    border: 2px solid #00786a;
    box-shadow: 0 5px 20px rgba(0, 120, 106, 0.1);
}

.content-section {
    margin-bottom: 35px;
    padding-bottom: 30px;
    border-bottom: 1px solid rgba(0, 120, 106, 0.1);
}

.content-section:last-child {
    border-bottom: none;
    margin-bottom: 0;
    padding-bottom: 0;
}

.content-section-part2 {
    margin-top: 50px;
    padding-top: 40px;
    border-top: 3px solid #00786a;
}

.content-section-title {
    font-size: 22px;
    font-weight: 700;
    color: #00786a;
    margin-bottom: 20px;
    padding-bottom: 12px;
    border-bottom: 2px solid rgba(0, 120, 106, 0.2);
}

.sub-section {
    margin-bottom: 30px;
    padding-left: 20px;
    border-left: 3px solid rgba(0, 120, 106, 0.2);
    padding-bottom: 25px;
    margin-bottom: 25px;
}

.sub-section:last-child {
    margin-bottom: 0;
    padding-bottom: 0;
}

.sub-section-title {
    font-size: 19px;
    font-weight: 600;
    color: #005a4f;
    margin-bottom: 15px;
}

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

.content-list li {
    font-size: 17px;
    line-height: 1.9;
    color: #444;
    padding: 10px 0;
    padding-left: 25px;
    position: relative;
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

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

.content-list li::before {
    content: '▸';
    position: absolute;
    left: 0;
    color: #00786a;
    font-weight: bold;
    font-size: 16px;
}

.learning-method {
    background: rgb(225, 247, 250);
    padding: 60px 0;
}

/* Learning Method Box */
.learning-method-box {
    max-width: 1000px;
    margin: 0 auto 60px;
    background: white;
    border-radius: 18px;
    padding: 40px 45px;
    border: 2px solid #00786a;
    box-shadow: 0 5px 20px rgba(0, 120, 106, 0.1);
}

.learning-method-content {
    max-width: 900px;
    margin: 0 auto;
}

.learning-method-content p {
    font-size: 19px;
    line-height: 2;
    margin-bottom: 25px;
    color: #444;
    text-align: justify;
    letter-spacing: 0.2px;
}

.learning-method-content p:last-child {
    margin-bottom: 0;
}

.sub-title {
    text-align: left;
    color: #00786a;
    font-size: 24px;
    margin-bottom: 30px;
    font-style: italic;
    font-weight: 500;
}

.method-steps {
    max-width: 900px;
    margin: 0 auto 40px;
}

.step-item {
    display: flex;
    gap: 25px;
    margin-bottom: 30px;
    background: white;
    padding: 35px;
    border-radius: 15px;
    border-left: 5px solid #00786a;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
}

.step-item:hover {
    transform: translateX(10px);
    box-shadow: 0 8px 30px rgba(0, 120, 106, 0.2);
}

.step-number {
    background: #00786a;
    color: white;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    font-weight: bold;
    flex-shrink: 0;
}

.step-content h4 {
    color: #00786a;
    font-size: 22px;
    margin-bottom: 12px;
    font-weight: 600;
}

.step-content p {
    font-size: 18px;
    line-height: 1.8;
    color: #333;
    text-align: justify;
}

.warning-note {
    max-width: 900px;
    margin: 40px auto 0;
    background: white;
    padding: 30px;
    border-radius: 8px;
    border-left: 4px solid #00786a;
}

.warning-note p {
    font-size: 18px;
    line-height: 1.8;
    margin-bottom: 15px;
    color: #333;
    text-align: justify;
}

.warning-note p:last-child {
    margin-bottom: 0;
}

/* Instructor New Styles */
.instructor-summary {
    background: rgb(225, 247, 250);
    padding: 25px;
    border-radius: 8px;
    border-left: 4px solid #00786a;
    margin: 30px 0;
    color: #00786a;
    font-size: 18px;
    line-height: 1.8;
    text-align: justify;
}

.highlight-box {
    background: rgb(225, 247, 250);
    border: 2px solid #00786a;
    padding: 30px;
    border-radius: 8px;
    margin-top: 30px;
}

.highlight-box p {
    color: #00786a;
    font-size: 18px;
    margin: 0;
    text-align: justify;
    line-height: 1.8;
}

/* Instructor Layout - Ảnh bên trái, nội dung bên phải */
.instructor-layout {
    display: flex;
    gap: 35px;
    align-items: flex-start;
}

.instructor-image {
    flex-shrink: 0;
    width: 300px;
}

.instructor-image img {
    width: 100%;
    height: auto;
    border-radius: 15px;
    box-shadow: 0 8px 25px rgba(0, 120, 106, 0.2);
    object-fit: cover;
}

.instructor-content {
    flex: 1;
}

.instructor-content p {
    color: #00786a;
    font-size: 18px;
    margin: 0 0 20px 0;
    text-align: justify;
    line-height: 1.8;
}

.instructor-content p:last-child {
    margin-bottom: 0;
}

/* Instructor Bottom Content - Nội dung dưới ảnh, 1 cột */
.instructor-bottom-content {
    background: rgba(255, 255, 255, 0.5);
    padding: 25px 30px;
    border-radius: 10px;
    border-left: 4px solid #00786a;
    margin-top: 30px;
    padding-top: 30px;
    border-top: 2px solid rgba(0, 120, 106, 0.2);
}

.instructor-bottom-content p {
    color: #00786a;
    font-size: 17px;
    margin: 0 0 20px 0;
    text-align: justify;
    line-height: 1.8;
    word-wrap: break-word;
    overflow-wrap: break-word;
}

.instructor-bottom-content p:last-child {
    margin-bottom: 0;
}

/* Pricing New Styles */
.pricing-description {
    max-width: 900px;
    margin: 0 auto;
    background: white;
    padding: 40px;
    border-radius: 8px;
}

.pricing-description p {
    font-size: 18px;
    line-height: 2.4;
    margin-bottom: 25px;
    text-align: justify;
    color: #333;
    padding-left: 30px;
    padding-right: 20px;
}

/* Philosophy Box - Phương châm giảng dạy */
.philosophy-box {
    max-width: 1000px;
    margin: 0 auto;
    background: white;
    border-radius: 18px;
    padding: 40px 45px;
    border: 2px solid #00786a;
    box-shadow: 0 4px 15px rgba(0, 120, 106, 0.1);
}

.philosophy-title {
    font-size: 26px;
    font-weight: 700;
    color: #00786a;
    margin: 0 0 25px 0;
    padding-bottom: 15px;
    border-bottom: 2px solid rgba(0, 120, 106, 0.2);
}

.philosophy-box p {
    font-size: 19px;
    line-height: 2;
    color: #333;
    text-align: justify;
    margin: 0;
    letter-spacing: 0.2px;
}

.pricing-note {
    font-size: 18px;
    color: #00786a;
    font-weight: bold;
    text-align: center;
    margin-top: 10px;
}

/* Force Mobile View - Áp dụng khi có class force-mobile-view */
body.force-mobile-view,
html.force-mobile-view {
    max-width: 100vw;
    overflow-x: hidden;
}

body.force-mobile-view .container {
    max-width: 100%;
    padding: 0 18px;
}

body.force-mobile-view {
    font-size: 17px;
    line-height: 1.75;
}

body.force-mobile-view header {
    padding: 15px 0;
}

body.force-mobile-view header .container {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
    gap: 15px;
}

body.force-mobile-view .logo {
    font-size: 24px;
}

body.force-mobile-view .logo-img {
    height: 45px;
}

body.force-mobile-view .menu-toggle {
    display: flex;
}

body.force-mobile-view nav.nav-menu {
    position: fixed;
    top: 70px;
    left: -100%;
    width: 100%;
    height: calc(100vh - 70px);
    background: white;
    flex-direction: column;
    align-items: center;
    justify-content: flex-start;
    padding: 40px 20px;
    gap: 20px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    transition: left 0.3s ease;
    z-index: 999;
    overflow-y: auto;
}

body.force-mobile-view nav.nav-menu.active {
    left: 0;
}

body.force-mobile-view nav.nav-menu a {
    width: 100%;
    text-align: center;
    padding: 15px 20px;
    font-size: 17px;
    border-radius: 8px;
    background: rgb(225, 247, 250);
    transition: all 0.3s ease;
}

body.force-mobile-view nav.nav-menu a::after {
    display: none;
}

body.force-mobile-view nav.nav-menu a:hover {
    background: #00786a;
    color: white;
    transform: translateX(5px);
}

body.force-mobile-view .hero {
    padding: 60px 0 50px;
}

body.force-mobile-view .hero-tagline h2 {
    font-size: 19px;
    line-height: 1.6;
    margin-bottom: 25px;
    text-align: justify;
    font-weight: 500;
}

body.force-mobile-view .hero-title {
    font-size: 26px;
    line-height: 1.4;
    margin-bottom: 20px;
    font-weight: 700;
}

body.force-mobile-view .hero-subtitle {
    font-size: 17px;
    line-height: 1.7;
    margin-bottom: 20px;
    text-align: justify;
    font-weight: 400;
}

body.force-mobile-view .hero-description {
    font-size: 16px;
    line-height: 1.7;
    margin-bottom: 30px;
    text-align: center;
}

body.force-mobile-view .hero-note {
    padding: 18px 20px;
    margin-bottom: 30px;
    border-radius: 8px;
}

body.force-mobile-view .hero-note-content {
    font-size: 17px;
    line-height: 1.9;
    text-align: justify;
    color: white;
    font-weight: 500;
    letter-spacing: 0.2px;
    font-style: italic;
}

body.force-mobile-view .hero-note-content strong {
    font-size: 18px;
    padding: 0;
    color: #000000;
    font-weight: 700;
    font-style: normal;
    text-shadow: none;
}

body.force-mobile-view .cta-button {
    font-size: 18px;
    padding: 15px 35px;
}

body.force-mobile-view .philosophy-box {
    padding: 25px 22px;
    border-radius: 15px;
    border-width: 2px;
}

body.force-mobile-view .philosophy-title {
    font-size: 20px;
    margin-bottom: 18px;
    padding-bottom: 12px;
}

body.force-mobile-view .philosophy-box p {
    font-size: 17px;
    line-height: 1.85;
}

body.force-mobile-view .section-title {
    font-size: 24px;
    line-height: 1.4;
    margin-bottom: 25px;
}

body.force-mobile-view .content-section h3 {
    font-size: 20px;
    line-height: 1.5;
    margin-bottom: 20px;
}

body.force-mobile-view .content-section h4 {
    font-size: 18px;
    line-height: 1.5;
    margin-bottom: 15px;
}

body.force-mobile-view .content-block p,
body.force-mobile-view .content-section p {
    font-size: 16px;
    line-height: 1.75;
    margin-bottom: 18px;
    text-align: justify;
}

body.force-mobile-view .info-card {
    padding: 25px 20px;
    border-radius: 18px;
    margin-top: 30px !important;
}

body.force-mobile-view .info-card .section-title {
    margin-bottom: 20px;
    font-size: 22px;
}

body.force-mobile-view .instructor-layout {
    flex-direction: column;
    gap: 20px;
}

body.force-mobile-view .instructor-image {
    width: 100%;
    max-width: 280px;
    margin: 0 auto;
}

body.force-mobile-view .instructor-content p {
    font-size: 16px;
    margin-bottom: 18px;
}

body.force-mobile-view .instructor-bottom-content {
    padding: 18px 20px;
    margin-top: 20px;
    padding-top: 20px;
}

body.force-mobile-view .instructor-bottom-content p {
    font-size: 16px;
    margin-bottom: 16px;
}

body.force-mobile-view .instructor-intro-box {
    padding: 28px 22px;
    border-radius: 15px;
}

body.force-mobile-view .instructor-intro-title {
    font-size: 22px;
    margin-bottom: 8px;
}

body.force-mobile-view .instructor-intro-subtitle {
    font-size: 17px;
    margin-bottom: 28px;
}

body.force-mobile-view .instructor-intro-content p {
    font-size: 16px;
    line-height: 1.85;
    margin-bottom: 20px;
}

body.force-mobile-view .instructor-note-box {
    padding: 18px 20px;
    margin: 22px 0;
}

body.force-mobile-view .instructor-note-box p {
    font-size: 16px;
    line-height: 1.85;
}

body.force-mobile-view .learning-method-box {
    padding: 28px 22px;
    margin-bottom: 35px;
    border-radius: 15px;
}

body.force-mobile-view .learning-method-content p {
    font-size: 16px;
    line-height: 1.85;
    margin-bottom: 20px;
}

body.force-mobile-view .testimonials-box {
    padding: 28px 22px;
    border-radius: 15px;
}

body.force-mobile-view .testimonials-list {
    gap: 22px;
    margin-top: 28px;
}

body.force-mobile-view .testimonial-item {
    padding: 20px 22px;
}

body.force-mobile-view .testimonial-header {
    gap: 12px;
    margin-bottom: 15px;
}

body.force-mobile-view .testimonial-header i {
    font-size: 28px;
}

body.force-mobile-view .testimonial-name strong {
    font-size: 17px;
}

body.force-mobile-view .testimonial-name span {
    font-size: 14px;
}

body.force-mobile-view .testimonial-item p {
    font-size: 16px;
    line-height: 1.8;
}

body.force-mobile-view .bonuses {
    padding: 25px 22px;
    border-radius: 15px;
}

body.force-mobile-view .bonuses h3 {
    font-size: 20px;
    margin-bottom: 22px;
    padding-bottom: 12px;
}

body.force-mobile-view .bonus-item {
    padding: 16px 20px;
    margin-bottom: 14px;
    gap: 14px;
}

body.force-mobile-view .bonus-icon {
    width: 40px;
    height: 40px;
    font-size: 18px;
}

body.force-mobile-view .bonus-content p {
    font-size: 15px;
    line-height: 1.8;
}

body.force-mobile-view .course-content-box {
    padding: 28px 22px;
    border-radius: 15px;
}

body.force-mobile-view .content-section {
    margin-bottom: 25px;
    padding-bottom: 22px;
}

body.force-mobile-view .content-section-title {
    font-size: 18px;
    margin-bottom: 16px;
    padding-bottom: 10px;
}

body.force-mobile-view .sub-section {
    padding-left: 12px;
    margin-bottom: 20px;
    padding-bottom: 18px;
}

body.force-mobile-view .sub-section-title {
    font-size: 16px;
    margin-bottom: 12px;
}

body.force-mobile-view .content-list li {
    font-size: 15px;
    line-height: 1.75;
    padding: 7px 0;
    padding-left: 20px;
}

body.force-mobile-view .intro-box {
    padding: 25px 18px;
    border-width: 2px;
    border-radius: 15px;
}

body.force-mobile-view .intro-title {
    font-size: 24px;
    padding-bottom: 12px;
    margin-bottom: 10px;
}


body.force-mobile-view .intro-subtitle {
    font-size: 17px;
    margin-bottom: 20px;
}

body.force-mobile-view .intro-content {
    padding: 20px 18px;
}

body.force-mobile-view .intro-content p {
    font-size: 16px;
    line-height: 1.85;
    margin-bottom: 18px;
}

body.force-mobile-view .floating-cta {
    bottom: 20px;
    right: 20px;
    padding: 12px 25px;
    font-size: 14px;
}

/* Responsive Design */
@media (max-width: 768px) {
    /* Cải thiện typography tổng thể cho mobile */
    body {
        font-size: 17px;
        line-height: 1.75;
    }

    .container {
        padding: 0 18px;
    }

    header {
        padding: 15px 0;
    }

    header .container {
        flex-direction: row;
        justify-content: space-between;
        align-items: center;
        gap: 15px;
    }

    .logo {
        font-size: 24px;
    }

    .logo-img {
        height: 45px;
    }

    /* Menu Toggle Button - Hiển thị trên mobile */
    .menu-toggle {
        display: flex;
    }

    nav.nav-menu {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 70px);
        background: white;
        flex-direction: column;
        align-items: center;
        justify-content: flex-start;
        padding: 40px 20px;
        gap: 20px;
        box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
        transition: left 0.3s ease;
        z-index: 999;
        overflow-y: auto;
    }

    nav.nav-menu.active {
        left: 0;
    }

    nav.nav-menu a {
        width: 100%;
        text-align: center;
        padding: 15px 20px;
        font-size: 17px;
        border-radius: 8px;
        background: rgb(225, 247, 250);
        transition: all 0.3s ease;
    }

    nav.nav-menu a::after {
        display: none;
    }

    nav.nav-menu a:hover {
        background: #00786a;
        color: white;
        transform: translateX(5px);
    }

    /* Hero Section - Cải thiện typography */
    .hero {
        padding: 60px 0 50px;
    }

    .hero-tagline h2 {
        font-size: 19px;
        line-height: 1.6;
        margin-bottom: 25px;
        text-align: justify;
        font-weight: 500;
    }

    .hero-title {
        font-size: 26px;
        line-height: 1.4;
        margin-bottom: 20px;
        font-weight: 700;
    }

    .hero-subtitle {
        font-size: 17px;
        line-height: 1.7;
        margin-bottom: 20px;
        text-align: justify;
        font-weight: 400;
    }

    .hero-description {
        font-size: 16px;
        line-height: 1.75;
        margin-bottom: 30px;
        text-align: center;
    }

    .hero-note {
        padding: 18px 20px;
        margin-bottom: 30px;
        border-radius: 8px;
    }

    .hero-note-content {
        font-size: 17px;
        line-height: 1.9;
        text-align: justify;
        color: white;
        font-weight: 500;
        letter-spacing: 0.2px;
        font-style: italic;
    }

    .hero-note-content strong {
        font-size: 18px;
        padding: 0;
        color: #000000;
        font-weight: 700;
        font-style: normal;
        text-shadow: none;
    }

    .cta-button {
        padding: 16px 35px;
        font-size: 17px;
        font-weight: 600;
    }

    /* Section Titles */
    .section-title {
        font-size: 26px;
        line-height: 1.3;
        margin-bottom: 25px;
    }

    .sub-title {
        font-size: 22px;
        line-height: 1.4;
        margin-bottom: 25px;
    }

    /* Content Sections - Cải thiện readability */
    .content-block p,
    .content-section p {
        font-size: 17px;
        line-height: 1.8;
        margin-bottom: 18px;
        text-align: justify;
        color: #333;
    }

    .intro-box {
        padding: 30px 20px;
        border-width: 2px;
        border-radius: 15px;
    }

    .intro-title {
        font-size: 26px;
        padding-bottom: 15px;
        margin-bottom: 12px;
    }


    .intro-subtitle {
        font-size: 18px;
        margin-bottom: 25px;
    }

    .intro-content {
        padding: 25px 20px;
    }

    .intro-content p {
        font-size: 17px;
        line-height: 1.9;
        margin-bottom: 20px;
    }

    .content-section h3 {
        font-size: 22px;
        line-height: 1.4;
        margin-bottom: 18px;
    }

    .example-box {
        padding: 25px 20px;
        margin: 25px 0;
    }

    .example-box p {
        font-size: 17px;
        line-height: 1.8;
        margin-bottom: 12px;
    }

    .example-note {
        font-size: 16px;
        line-height: 1.75;
    }

    .warning-box {
        padding: 22px 20px;
        margin: 30px auto;
    }

    .warning-box h3 {
        font-size: 17px;
        line-height: 1.75;
        text-align: justify;
    }

    /* Techniques List */
    .techniques-list {
        padding-left: 25px;
        margin: 20px 0;
    }

    .techniques-list li {
        font-size: 17px;
        line-height: 1.8;
        margin-bottom: 10px;
        padding: 10px 0;
    }

    .note-text {
        font-size: 17px;
        line-height: 1.8;
        padding: 18px;
    }

    .requirement-box {
        padding: 22px 20px;
        margin: 30px auto;
    }

    .requirement-box p {
        font-size: 17px;
        line-height: 1.8;
    }

    /* Learning Method */
    .step-item {
        flex-direction: column;
        text-align: left;
        padding: 25px 20px;
        margin-bottom: 25px;
    }

    .step-number {
        margin: 0 auto 18px;
        width: 45px;
        height: 45px;
        font-size: 22px;
    }

    .step-content {
        text-align: justify;
    }

    .step-content h4 {
        font-size: 20px;
        line-height: 1.4;
        margin-bottom: 12px;
    }

    .step-content p {
        font-size: 17px;
        line-height: 1.8;
        text-align: justify;
    }

    .warning-note {
        padding: 25px 20px;
        margin: 30px auto;
    }

    .warning-note p {
        font-size: 17px;
        line-height: 1.8;
        margin-bottom: 12px;
        text-align: justify;
    }

    /* Instructor Section */
    .instructor-card {
        padding: 0;
    }

    .instructor-card p {
        font-size: 17px;
        line-height: 1.8;
        margin-bottom: 18px;
        text-align: justify;
    }

    .instructor-intro-box {
        padding: 30px 25px;
        border-radius: 15px;
    }

    .instructor-intro-title {
        font-size: 24px;
        margin-bottom: 8px;
    }

    .instructor-intro-subtitle {
        font-size: 18px;
        margin-bottom: 30px;
    }

    .instructor-intro-content p {
        font-size: 17px;
        line-height: 1.9;
        margin-bottom: 22px;
    }

    .instructor-note-box {
        padding: 20px 22px;
        margin: 25px 0;
    }

    .instructor-note-box p {
        font-size: 17px;
        line-height: 1.9;
    }

    .instructor-summary {
        font-size: 17px;
        line-height: 1.8;
        padding: 22px 20px;
        margin: 25px 0;
    }

    .highlight-box {
        padding: 25px 20px;
        margin-top: 25px;
    }

    .highlight-box p {
        font-size: 17px;
        line-height: 1.8;
    }

    .instructor-layout {
        flex-direction: column;
        gap: 25px;
    }

    .instructor-image {
        width: 100%;
        max-width: 300px;
        margin: 0 auto;
    }

    .instructor-content p {
        font-size: 17px;
        margin-bottom: 18px;
    }

    .instructor-bottom-content {
        padding: 20px 22px;
        margin-top: 25px;
        padding-top: 25px;
    }

    .instructor-bottom-content p {
        font-size: 16px;
        margin-bottom: 18px;
    }

    /* Pricing Section */
    .pricing {
        padding: 20px 0 50px 0;
    }

    .pricing-card {
        padding: 0;
    }

    .pricing-title-before-form {
        font-size: 24px;
        line-height: 1.3;
        margin: 25px 0 15px 0;
    }

    .pricing-note {
        font-size: 15px;
        line-height: 1.7;
        margin-bottom: 25px;
        padding: 18px;
    }

    .registration-form {
        padding: 30px 20px;
        margin-top: 20px;
    }

    .registration-form h3 {
        font-size: 24px;
        margin-bottom: 25px;
    }

    .registration-form .pricing-note {
        font-size: 15px;
        margin: 8px 0 20px 0;
        padding: 0;
    }

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

    .form-group label {
        font-size: 16px;
        margin-bottom: 10px;
    }

    .form-group input {
        padding: 14px 16px;
        font-size: 16px;
    }

    .submit-btn {
        padding: 16px;
        font-size: 17px;
        font-weight: 600;
    }

    .new-price {
        font-size: 38px;
    }

    .old-price {
        font-size: 26px;
    }

    /* Course Description */
    .pricing-description {
        padding: 30px 20px;
    }

    .pricing-description p {
        font-size: 17px;
        line-height: 2.2;
        margin-bottom: 20px;
        padding-left: 20px;
        padding-right: 15px;
    }

    .philosophy-box {
        padding: 28px 25px;
        border-radius: 15px;
        border-width: 2px;
    }

    .philosophy-title {
        font-size: 22px;
        margin-bottom: 20px;
        padding-bottom: 12px;
    }

    .philosophy-box p {
        font-size: 17px;
        line-height: 1.9;
    }

    /* Benefits Grid */
    .benefits-grid {
        grid-template-columns: 1fr;
        gap: 25px;
    }

    .benefit-card {
        padding: 25px 20px;
    }

    .benefit-card h3 {
        font-size: 20px;
        margin-bottom: 12px;
    }

    .benefit-card p {
        font-size: 17px;
        line-height: 1.75;
        text-align: justify;
    }

    /* Footer */
    .footer {
        padding: 50px 0 30px;
    }

    .footer h2 {
        font-size: 24px;
        margin-bottom: 18px;
    }

    .footer-motto {
        font-size: 20px;
        margin: 20px 0;
    }

    .contact-info {
        text-align: left;
        margin-bottom: 25px;
    }

    .contact-info p {
        font-size: 16px;
        line-height: 1.75;
        margin-bottom: 10px;
        text-align: justify;
    }

    /* Social Links Responsive */
    .social-links {
        margin: 30px 0 25px;
        padding: 25px 0;
    }

    .social-links h4 {
        font-size: 19px;
        margin-bottom: 18px;
    }

    .social-icons-row {
        flex-direction: column;
        gap: 12px;
        padding: 0 10px;
    }

    .social-link {
        font-size: 15px;
        padding: 14px 20px;
        min-width: 100%;
        max-width: 100%;
        width: 100%;
    }

    .social-icon {
        font-size: 19px;
    }

    .social-text {
        font-size: 15px;
    }

    /* Đảm bảo tất cả text đều căn đều trên mobile */
    .content-item,
    .audience-item,
    .bonuses {
        padding: 28px 25px;
        border-radius: 15px;
    }

    .bonuses h3 {
        font-size: 22px;
        margin-bottom: 25px;
    }

    .bonus-item {
        padding: 18px 22px;
        margin-bottom: 15px;
        gap: 15px;
    }

    .bonus-icon {
        width: 45px;
        height: 45px;
        font-size: 22px;
    }

    .bonus-content p {
        font-size: 16px;
        line-height: 1.85;
    }

    .bonus-item,
    .instructor-role,
    .instructor-info li,
    .instructor-philosophy,
    .testimonial-intro {
        font-size: 17px;
        line-height: 1.8;
        text-align: justify;
    }

    /* Section spacing */
    section {
        padding: 50px 0;
    }

    .main-content {
        padding: 50px 0;
    }

    .course-content {
        padding: 50px 0;
    }

    .course-content {
        padding: 50px 0;
    }

    .course-content-box {
        padding: 30px 25px;
        border-radius: 15px;
    }

    .content-section {
        margin-bottom: 28px;
        padding-bottom: 25px;
    }

    .content-section-title {
        font-size: 20px;
        margin-bottom: 18px;
        padding-bottom: 10px;
    }

    .sub-section {
        padding-left: 15px;
        margin-bottom: 22px;
        padding-bottom: 20px;
    }

    .sub-section-title {
        font-size: 17px;
        margin-bottom: 12px;
    }

    .content-list li {
        font-size: 16px;
        line-height: 1.8;
        padding: 8px 0;
        padding-left: 22px;
    }

    .learning-method {
        padding: 50px 0;
    }

    .learning-method-box {
        padding: 30px 25px;
        margin-bottom: 40px;
        border-radius: 15px;
    }

    .learning-method-content p {
        font-size: 17px;
        line-height: 1.9;
        margin-bottom: 22px;
    }

    .testimonials-box {
        padding: 30px 25px;
        border-radius: 15px;
    }

    .testimonials-list {
        gap: 25px;
        margin-top: 30px;
    }

    .testimonial-item {
        padding: 22px 25px;
    }

    .testimonial-header {
        gap: 12px;
        margin-bottom: 16px;
    }

    .testimonial-header i {
        font-size: 30px;
    }

    .testimonial-name strong {
        font-size: 18px;
    }

    .testimonial-name span {
        font-size: 15px;
    }

    .testimonial-item p {
        font-size: 17px;
        line-height: 1.85;
    }

    .course-description-section {
        padding: 50px 0 20px 0;
    }

    /* Floating CTA Button - Mobile */
    .floating-cta {
        bottom: 20px !important;
        right: 20px !important;
        padding: 14px 24px !important;
        font-size: 15px !important;
    }
}

/* Smooth Scroll */
html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

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

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

.benefit-card,
.content-item,
.audience-item {
    animation: fadeInUp 0.8s ease-out;
}

/* Smooth fade in for sections */
section {
    animation: fadeIn 0.6s ease-out;
}

/* Improved loading state for images */
img {
    transition: opacity 0.3s ease;
}

img[src=""], img:not([src]) {
    opacity: 0;
}