:root {
    --primary: #388E3C;
    --primary-dark: #2E7D32;
    --primary-light: #E8F5E9;
    --accent: #f59e0b;
    --accent-dark: #d97706;
    --accent-light: #fef3c7;
    --text-dark: #1e293b;
    --text-medium: #475569;
    --text-light: #64748b;
    --bg-white: #ffffff;
    --bg-light: #f8fafc;
    --bg-subtle: #f1f5f9;
    --border-light: #e2e8f0;
    --border-medium: #cbd5e1;
    --success: #059669;
    --shadow-sm: 0 1px 3px rgba(0,0,0,.08);
    --shadow-md: 0 4px 12px rgba(0,0,0,.1);
    --shadow-lg: 0 8px 30px rgba(0,0,0,.12);
    --shadow-glow: 0 0 20px rgba(56,142,60,.15);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 20px;
    --transition: all .3s cubic-bezier(.4,0,.2,1);
    --font-body: 'Segoe UI',system-ui,-apple-system,sans-serif;
    --font-heading: 'Segoe UI',system-ui,-apple-system,sans-serif;
    --max-width: 900px;
    --max-width-wide: 1100px;
}

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

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font-body);
    font-size: 16.5px;
    line-height: 1.75;
    color: var(--text-dark);
    background-color: var(--bg-light);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

::selection {
    background: var(--primary);
    color: #fff;
}

.hero {
    background: linear-gradient(135deg,#388E3C 0%,#2E7D32 50%,#1B5E20 100%);
    color: #fff;
    text-align: center;
    padding: 60px 24px 50px;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle at 30% 40%,rgba(245,158,11,.1) 0%,transparent 50%),
                radial-gradient(circle at 70% 60%,rgba(255,255,255,.05) 0%,transparent 40%);
    animation: heroShimmer 8s ease-in-out infinite alternate;
    pointer-events: none;
}

@keyframes heroShimmer {
    0% { transform: translate(0,0) rotate(0deg); }
    100% { transform: translate(-2%,-1%) rotate(1deg); }
}

.hero h1 {
    font-family: var(--font-heading);
    font-size: clamp(1.6rem,4vw,2.4rem);
    font-weight: 800;
    line-height: 1.3;
    margin-bottom: 16px;
    position: relative;
    z-index: 1;
    text-shadow: 0 2px 4px rgba(0,0,0,.15);
}

.hero p {
    font-size: clamp(1rem,2.2vw,1.15rem);
    line-height: 1.7;
    color: rgba(255,255,255,.9);
    max-width: 700px;
    margin: 0 auto 28px;
    position: relative;
    z-index: 1;
}

.hero p strong {
    color: #fff;
    font-weight: 600;
}

.hero .cta-button {
    display: inline-block;
    background: var(--accent);
    color: var(--text-dark);
    font-weight: 700;
    font-size: 1rem;
    padding: 14px 36px;
    border-radius: 50px;
    text-decoration: none;
    position: relative;
    z-index: 1;
    transition: var(--transition);
    box-shadow: 0 4px 15px rgba(245,158,11,.4);
    letter-spacing: .3px;
}

.hero .cta-button:hover {
    background: var(--accent-dark);
    transform: translateY(-2px);
    box-shadow: 0 6px 25px rgba(245,158,11,.5);
}

main {
    max-width: var(--max-width-wide);
    margin: 0 auto;
    padding: 30px 20px 50px;
}

.section {
    background: var(--bg-white);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    padding: 36px 32px;
    margin-bottom: 24px;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: linear-gradient(180deg,var(--primary),var(--accent));
    border-radius: 4px 0 0 4px;
    opacity: 0;
    transition: var(--transition);
}

.section:hover {
    border-color: var(--primary);
    box-shadow: var(--shadow-lg),var(--shadow-glow);
    transform: translateY(-3px);
}

.section:hover::before {
    opacity: 1;
}

.section h2 {
    font-family: var(--font-heading);
    font-size: clamp(1.25rem,3vw,1.5rem);
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 12px;
    line-height: 1.4;
    display: flex;
    align-items: center;
    gap: 12px;
}

.section h2 i {
    color: var(--primary);
    font-size: 1.2rem;
    background: var(--primary-light);
    width: 42px;
    height: 42px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 10px;
    flex-shrink: 0;
    transition: var(--transition);
}

.section:hover h2 i {
    background: var(--primary);
    color: #fff;
    transform: scale(1.05);
}

.section p {
    color: var(--text-medium);
    font-size: 1rem;
    line-height: 1.8;
    margin-bottom: 20px;
}

.section p strong {
    color: var(--text-dark);
    font-weight: 600;
}

.section .cta-button {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--primary);
    color: #fff;
    font-weight: 600;
    font-size: .95rem;
    padding: 12px 28px;
    border-radius: 50px;
    text-decoration: none;
    transition: var(--transition);
    box-shadow: 0 3px 10px rgba(56,142,60,.3);
}

.section .cta-button::after {
    content: '→';
    font-size: 1.1rem;
    transition: transform .3s ease;
}

.section .cta-button:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 5px 20px rgba(56,142,60,.4);
}

.section .cta-button:hover::after {
    transform: translateX(4px);
}

.intro-section,
#syllabus-overview {
    background: linear-gradient(135deg,var(--primary-light) 0%,#F1F8E9 100%);
    border: 1px solid #C8E6C9;
    border-left: 5px solid var(--primary);
}

.intro-section:hover,
#syllabus-overview:hover {
    border-color: #C8E6C9;
    border-left-color: var(--primary);
}

.syllabus-content {
    max-width: var(--max-width);
    margin: 0 auto;
}

.syllabus-content > section {
    background: var(--bg-white);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    padding: 36px 32px;
    margin-bottom: 28px;
    transition: var(--transition);
    position: relative;
}

.syllabus-content > section:hover {
    border-color: var(--border-medium);
    box-shadow: var(--shadow-md);
}

.syllabus-content h2 {
    font-family: var(--font-heading);
    font-size: clamp(1.35rem,3.5vw,1.65rem);
    font-weight: 800;
    color: var(--bg-white);
    background: linear-gradient(135deg,var(--primary),var(--primary-dark));
    padding: 16px 24px;
    margin: -36px -32px 28px -32px;
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
    line-height: 1.4;
    position: relative;
}

.syllabus-content h2::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 24px;
    right: 24px;
    height: 3px;
    background: var(--accent);
    border-radius: 3px;
}

.syllabus-content h3 {
    font-family: var(--font-heading);
    font-size: clamp(1.02rem,2.5vw,1.12rem);
    font-weight: 700;
    color: var(--primary-dark);
    margin-top: 28px;
    margin-bottom: 10px;
    padding-bottom: 8px;
    border-bottom: 2px solid var(--primary-light);
    line-height: 1.5;
    display: flex;
    align-items: flex-start;
    gap: 8px;
}

.syllabus-content h3::before {
    content: '▸';
    color: var(--accent);
    font-size: 1rem;
    flex-shrink: 0;
    margin-top: 2px;
}

.syllabus-content section > h3:first-of-type {
    margin-top: 0;
}

.syllabus-content p {
    color: var(--text-medium);
    font-size: .98rem;
    line-height: 1.85;
    margin-bottom: 6px;
    padding-left: 18px;
    position: relative;
}

.syllabus-content #syllabus-overview p {
    padding-left: 0;
    font-size: 1.02rem;
    color: var(--text-dark);
}

.syllabus-content p strong {
    color: var(--text-dark);
    font-weight: 600;
}

.syllabus-content p em {
    color: var(--primary-dark);
}

#table-of-contents {
    max-width: var(--max-width);
    margin: 40px auto 36px;
    background: var(--bg-white);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    padding: 32px 36px;
    position: relative;
    overflow: hidden;
}

#table-of-contents::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg,var(--primary),var(--accent),var(--primary));
}

#table-of-contents h2 {
    font-family: var(--font-heading);
    font-size: 1.35rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 10px;
}

#table-of-contents h2 i {
    color: var(--primary);
}

#table-of-contents ol {
    list-style: none;
    counter-reset: toc-counter;
    padding: 0;
}

#table-of-contents ol li {
    counter-increment: toc-counter;
    margin-bottom: 6px;
}

#table-of-contents ol li a {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 12px 18px;
    text-decoration: none;
    color: var(--text-medium);
    font-weight: 500;
    font-size: .98rem;
    border-radius: var(--radius-sm);
    transition: var(--transition);
    border: 1px solid transparent;
}

#table-of-contents ol li a::before {
    content: counter(toc-counter,decimal-leading-zero);
    font-family: var(--font-heading);
    font-weight: 800;
    font-size: .85rem;
    color: var(--primary);
    background: var(--primary-light);
    min-width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 8px;
    flex-shrink: 0;
    transition: var(--transition);
}

#table-of-contents ol li a:hover {
    background: var(--primary-light);
    color: var(--primary-dark);
    border-color: #C8E6C9;
    transform: translateX(6px);
}

#table-of-contents ol li a:hover::before {
    background: var(--primary);
    color: #fff;
}

.cta-section {
    max-width: var(--max-width);
    margin: 40px auto 30px;
    text-align: center;
    background: linear-gradient(135deg,#388E3C 0%,#2E7D32 100%);
    border: none;
    border-radius: var(--radius-xl);
    padding: 48px 36px;
    position: relative;
    overflow: hidden;
}

.cta-section::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -30%;
    width: 300px;
    height: 300px;
    background: radial-gradient(circle,rgba(245,158,11,.15),transparent 70%);
    border-radius: 50%;
    pointer-events: none;
}

.cta-section::after {
    content: '';
    position: absolute;
    bottom: -40%;
    left: -20%;
    width: 250px;
    height: 250px;
    background: radial-gradient(circle,rgba(255,255,255,.06),transparent 70%);
    border-radius: 50%;
    pointer-events: none;
}

.cta-section:hover {
    border-color: transparent;
    transform: translateY(-3px);
    box-shadow: 0 12px 40px rgba(56,142,60,.35);
}

.cta-section:hover::before {
    opacity: 1;
}

.cta-section h2 {
    color: #fff;
    font-size: clamp(1.4rem,3.5vw,1.7rem);
    margin-bottom: 14px;
    position: relative;
    z-index: 1;
    justify-content: center;
}

.cta-section h2 i {
    background: rgba(255,255,255,.15);
    color: var(--accent);
}

.cta-section:hover h2 i {
    background: rgba(255,255,255,.2);
    color: var(--accent);
}

.cta-section p {
    color: rgba(255,255,255,.9);
    font-size: 1.05rem;
    max-width: 600px;
    margin: 0 auto 26px;
    position: relative;
    z-index: 1;
}

.cta-section p strong {
    color: #fff;
}

.cta-section .cta-button {
    background: var(--accent);
    color: var(--text-dark);
    font-weight: 700;
    font-size: 1.05rem;
    padding: 15px 40px;
    border-radius: 50px;
    box-shadow: 0 4px 20px rgba(245,158,11,.4);
    position: relative;
    z-index: 1;
}

.cta-section .cta-button::after {
    content: '🚀';
    font-size: 1rem;
}

.cta-section .cta-button:hover {
    background: #fff;
    color: var(--primary-dark);
    box-shadow: 0 6px 30px rgba(255,255,255,.3);
}

.faq-item {
    background: var(--bg-subtle);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-md);
    padding: 22px 26px;
    margin-bottom: 14px;
    transition: var(--transition);
}

.faq-item:hover {
    border-color: var(--primary);
    box-shadow: var(--shadow-sm);
    background: var(--primary-light);
}

.faq-item h3 {
    font-family: var(--font-heading);
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 8px;
    line-height: 1.5;
    display: flex;
    align-items: flex-start;
    gap: 10px;
}

.faq-item h3::before {
    content: 'Q';
    font-weight: 800;
    font-size: .8rem;
    color: var(--primary);
    background: var(--primary-light);
    min-width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 6px;
    flex-shrink: 0;
    margin-top: 2px;
}

.faq-item:hover h3::before {
    background: var(--primary);
    color: #fff;
}

.faq-item p {
    color: var(--text-medium);
    font-size: .96rem;
    line-height: 1.8;
    padding-left: 38px;
    margin-bottom: 0;
}

.breadcrumb {
    max-width: var(--max-width-wide);
    margin: 0 auto;
    padding: 14px 24px;
}

.breadcrumb ol {
    list-style: none;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 6px;
    padding: 0;
}

.breadcrumb ol li {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: .88rem;
    color: var(--text-light);
}

.breadcrumb ol li:not(:last-child)::after {
    content: '/';
    color: var(--border-medium);
    margin-left: 2px;
}

.breadcrumb ol li a {
    color: var(--primary);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
}

.breadcrumb ol li a:hover {
    color: var(--primary-dark);
    text-decoration: underline;
}

.breadcrumb ol li:last-child a {
    color: var(--text-light);
    pointer-events: none;
}

@media (max-width:768px) {
    .hero {
        padding: 44px 18px 38px;
    }
    .section {
        padding: 26px 22px;
        margin-bottom: 18px;
    }
    .section h2 {
        font-size: 1.2rem;
        gap: 10px;
    }
    .section h2 i {
        width: 36px;
        height: 36px;
        font-size: 1rem;
        border-radius: 8px;
    }
    .syllabus-content h2 {
        font-size: 1.2rem;
        padding: 14px 20px;
        margin: -26px -22px 22px -22px;
    }
    .syllabus-content h3 {
        font-size: 1rem;
    }
    .syllabus-content p {
        padding-left: 10px;
        font-size: .94rem;
    }
    .syllabus-content > section {
        padding: 26px 22px;
        margin-bottom: 20px;
    }
    #table-of-contents {
        padding: 24px 20px;
    }
    #table-of-contents ol li a {
        padding: 10px 14px;
        font-size: .93rem;
    }
    .cta-section {
        padding: 36px 22px;
    }
    .faq-item {
        padding: 18px 20px;
    }
    .faq-item h3 {
        font-size: .98rem;
    }
    .faq-item p {
        padding-left: 0;
        margin-top: 6px;
    }
}

@media (max-width:480px) {
    body {
        font-size: 15.5px;
    }
    .hero {
        padding: 36px 14px 30px;
    }
    .hero .cta-button {
        padding: 12px 28px;
        font-size: .93rem;
    }
    main {
        padding: 20px 14px 40px;
    }
    .section {
        padding: 22px 18px;
        border-radius: var(--radius-md);
    }
    .section .cta-button {
        padding: 10px 22px;
        font-size: .9rem;
    }
    .syllabus-content > section {
        padding: 22px 18px;
        border-radius: var(--radius-md);
    }
    .syllabus-content h2 {
        font-size: 1.08rem;
        padding: 12px 16px;
        margin: -22px -18px 18px -18px;
        border-radius: var(--radius-md) var(--radius-md) 0 0;
    }
    .syllabus-content h3 {
        font-size: .95rem;
        margin-top: 22px;
    }
    #table-of-contents ol li a {
        padding: 9px 12px;
        font-size: .9rem;
        gap: 10px;
    }
    #table-of-contents ol li a::before {
        min-width: 30px;
        height: 30px;
        font-size: .78rem;
    }
    .cta-section {
        padding: 30px 18px;
        border-radius: var(--radius-lg);
    }
    .cta-section .cta-button {
        padding: 13px 30px;
        font-size: .95rem;
    }
    .breadcrumb {
        padding: 10px 14px;
    }
}

@media print {
    .hero {
        background: none;
        color: #000;
        padding: 20px 0;
    }
    .hero .cta-button,
    .section .cta-button,
    .cta-section,
    #table-of-contents,
    #navbar,
    #footer,
    #social-section {
        display: none;
    }
    .section,
    .syllabus-content > section {
        box-shadow: none;
        border: 1px solid #ccc;
        break-inside: avoid;
    }
    .syllabus-content h2 {
        background: none;
        color: #000;
        border-bottom: 2px solid #000;
        margin: 0 0 16px 0;
        padding: 8px 0;
        border-radius: 0;
    }
}

@media (prefers-reduced-motion:reduce) {
    html {
        scroll-behavior: auto;
    }
    .section,
    .section::before,
    .section h2 i,
    .section .cta-button,
    .section .cta-button::after,
    #table-of-contents ol li a,
    #table-of-contents ol li a::before,
    .faq-item,
    .faq-item h3::before,
    .cta-section {
        transition: none;
    }
    .hero::before {
        animation: none;
    }
}