/* ========== Variables & Reset ========== */
:root {
    --primary: #7c3aed;
    --primary-dark: #6d28d9;
    --primary-light: #8b5cf6;
    --primary-50: #f5f3ff;
    --primary-100: #ede9fe;
    --accent: #d97706;
    --accent-50: #fffbeb;
    --secondary: #1e1b4b;
    --text: #374151;
    --text-secondary: #6b7280;
    --text-light: #9ca3af;
    --bg: #ffffff;
    --bg-warm: #faf9f7;
    --bg-light: #f9f8f6;
    --border: #eeecea;
    --border-dark: #e2e0dd;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.04);
    --shadow: 0 4px 12px rgba(0,0,0,0.06);
    --shadow-md: 0 8px 24px rgba(0,0,0,0.07);
    --shadow-lg: 0 16px 40px rgba(0,0,0,0.09);
    --shadow-xl: 0 24px 60px rgba(0,0,0,0.12);
    --radius: 12px;
    --radius-lg: 20px;
    --radius-full: 9999px;
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --font: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-serif: 'Noto Serif SC', Georgia, serif;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; -webkit-font-smoothing: antialiased; }
body { font-family: var(--font); color: var(--text); background: var(--bg); line-height: 1.7; overflow-x: hidden; }
a { color: inherit; text-decoration: none; transition: color var(--transition); }
img { max-width: 100%; display: block; }
button { border: none; background: none; cursor: pointer; font-family: inherit; }
input, textarea, select { font-family: inherit; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

/* ========== Buttons ========== */
.btn {
    display: inline-flex; align-items: center; justify-content: center;
    padding: 14px 32px; border-radius: var(--radius-full);
    font-size: 1rem; font-weight: 600; transition: all var(--transition);
    cursor: pointer; border: 2px solid transparent;
}
.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    color: #fff; border-color: var(--primary);
    box-shadow: 0 4px 14px rgba(124,58,237,0.25);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 25px rgba(124,58,237,0.35); }
.btn-outline {
    background: rgba(255,255,255,0.12); color: #fff;
    border-color: rgba(255,255,255,0.35); backdrop-filter: blur(10px);
}
.btn-outline:hover { background: rgba(255,255,255,0.22); border-color: rgba(255,255,255,0.6); transform: translateY(-2px); }
.btn-block { width: 100%; }

/* ========== Section Common ========== */
.section-header { text-align: center; margin-bottom: 56px; }
.section-tag {
    display: inline-block; padding: 6px 20px;
    background: var(--primary-50); color: var(--primary);
    border-radius: var(--radius-full); font-size: 0.875rem; font-weight: 600; margin-bottom: 16px;
}
.section-title {
    font-family: var(--font-serif); font-size: 2.5rem;
    font-weight: 700; color: var(--secondary); margin-bottom: 16px; line-height: 1.3;
}
.section-desc {
    font-size: 1.0625rem; color: var(--text-secondary);
    max-width: 600px; margin: 0 auto; line-height: 1.8;
}

/* ========== Header ========== */
.header { position: fixed; top: 0; left: 0; right: 0; z-index: 1000; padding: 16px 0; transition: all var(--transition); }
.header.scrolled { background: rgba(255,255,255,0.96); backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px); padding: 10px 0; box-shadow: 0 2px 20px rgba(0,0,0,0.06); }
.header-inner { display: flex; align-items: center; justify-content: space-between; }
.logo { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 1.25rem; z-index: 10; }
.logo-svg { width: 40px; height: 40px; }
.logo-text { color: var(--secondary); }
.header:not(.scrolled) .logo-text { color: #fff; }
.nav { display: flex; align-items: center; gap: 6px; }
.nav-link {
    padding: 8px 16px; border-radius: var(--radius-full);
    font-size: 0.9375rem; font-weight: 500;
    color: rgba(255,255,255,0.8); transition: all var(--transition);
}
.header.scrolled .nav-link { color: var(--text-secondary); }
.nav-link:hover, .nav-link.active { color: #fff; background: rgba(255,255,255,0.15); }
.header.scrolled .nav-link:hover, .header.scrolled .nav-link.active { color: var(--primary); background: var(--primary-50); }
.nav-cta {
    background: linear-gradient(135deg, var(--accent), #b45309) !important;
    color: #fff !important; margin-left: 8px;
    box-shadow: 0 3px 10px rgba(217,119,6,0.3);
}
.nav-cta:hover { transform: translateY(-1px); box-shadow: 0 5px 15px rgba(217,119,6,0.4); }
.mobile-toggle { display: none; flex-direction: column; gap: 5px; padding: 8px; z-index: 10; }
.mobile-toggle span { display: block; width: 24px; height: 2px; background: var(--secondary); border-radius: 2px; transition: all var(--transition); }
.header:not(.scrolled) .mobile-toggle span { background: #fff; }

/* ========== Hero ========== */
.hero { position: relative; min-height: 100vh; display: flex; align-items: center; padding: 120px 0 80px; overflow: hidden; }
.hero-bg { position: absolute; inset: 0; background: linear-gradient(135deg, #1e1b4b 0%, #312e81 30%, #5b21b6 60%, #7c3aed 100%); }
.hero-bg::after {
    content: ''; position: absolute; inset: 0;
    background: radial-gradient(ellipse at 75% 40%, rgba(139,92,246,0.2) 0%, transparent 50%),
                radial-gradient(ellipse at 25% 75%, rgba(217,119,6,0.12) 0%, transparent 45%);
}
.hero-particles { position: absolute; inset: 0; z-index: 1; pointer-events: none; }
.hero-inner { position: relative; z-index: 2; display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; }
.hero-content { color: #fff; }
.hero-badge {
    display: inline-flex; padding: 8px 20px;
    background: rgba(255,255,255,0.08); border: 1px solid rgba(255,255,255,0.15);
    border-radius: var(--radius-full); font-size: 0.875rem; font-weight: 500; margin-bottom: 24px;
}
.hero-title { font-family: var(--font-serif); font-size: 3.25rem; font-weight: 900; line-height: 1.2; margin-bottom: 20px; }
.gradient-text {
    background: linear-gradient(135deg, #fbbf24, #f472b6, #c084fc);
    -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}
.hero-desc { font-size: 1.0625rem; line-height: 1.9; color: rgba(255,255,255,0.65); margin-bottom: 32px; max-width: 460px; }
.hero-actions { display: flex; gap: 14px; }

/* Hero Card Stack */
.hero-card-stack { display: grid; grid-template-columns: 1fr; gap: 16px; max-width: 380px; margin: 0 auto; }
.hero-card {
    border-radius: var(--radius-lg); overflow: hidden;
    box-shadow: var(--shadow-lg); transition: transform 0.4s ease;
    animation: cardIn 0.6s ease both;
}
.hero-card:hover { transform: translateY(-4px); }
.hc-1 { animation-delay: 0.1s; }
.hc-2 { animation-delay: 0.2s; }
.hc-3 { animation-delay: 0.3s; }
.hc-4 { animation-delay: 0.4s; }
@keyframes cardIn { from { opacity: 0; transform: translateY(20px); } to { opacity: 1; transform: translateY(0); } }
.hc-img { height: 100px; overflow: hidden; }
.hc-img img { width: 100%; height: 100%; object-fit: cover; display: block; }
.hc-body { padding: 16px; display: flex; align-items: center; gap: 12px; background: #fff; }
.hc-icon-wrap {
    width: 40px; height: 40px; border-radius: 10px;
    display: flex; align-items: center; justify-content: center; flex-shrink: 0;
}
.hc-icon-wrap svg { width: 22px; height: 22px; }
.hc-body strong { font-size: 0.9375rem; color: var(--secondary); display: block; }
.hc-body small { font-size: 0.8125rem; color: var(--text-secondary); }

.hero-scroll {
    position: absolute; bottom: 30px; left: 50%; transform: translateX(-50%); z-index: 3;
    display: flex; flex-direction: column; align-items: center; gap: 8px;
    color: rgba(255,255,255,0.4); font-size: 0.75rem;
}
.scroll-arrow {
    width: 18px; height: 18px;
    border-right: 2px solid rgba(255,255,255,0.3); border-bottom: 2px solid rgba(255,255,255,0.3);
    transform: rotate(45deg); animation: scrollBounce 2s infinite;
}
@keyframes scrollBounce { 0%,100% { transform: rotate(45deg) translateY(0); opacity: 0.3; } 50% { transform: rotate(45deg) translateY(6px); opacity: 0.8; } }

/* ========== Stats Bar ========== */
.stats-bar { padding: 52px 0; background: var(--bg-warm); border-bottom: 1px solid var(--border); }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 32px; text-align: center; }
.stat-num { margin-bottom: 4px; }
.stat-number { font-family: var(--font-serif); font-size: 2.75rem; font-weight: 900; color: var(--primary); }
.stat-unit { font-size: 1.125rem; font-weight: 700; color: var(--primary-light); }
.stat-label { font-size: 0.9375rem; color: var(--text-secondary); font-weight: 500; }

/* ========== Courses ========== */
.courses { padding: 100px 0; background: var(--bg); }
.course-tabs { display: flex; justify-content: center; gap: 10px; margin-bottom: 40px; flex-wrap: wrap; }
.course-tab {
    padding: 10px 24px; border-radius: var(--radius-full);
    font-size: 0.9375rem; font-weight: 600; color: var(--text-secondary);
    background: var(--bg-light); border: 1px solid var(--border); transition: all var(--transition);
}
.course-tab:hover { color: var(--primary); border-color: var(--primary-100); }
.course-tab.active { background: var(--primary); color: #fff; border-color: var(--primary); box-shadow: 0 4px 12px rgba(124,58,237,0.25); }
.courses-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.course-card {
    background: #fff; border-radius: var(--radius-lg); overflow: hidden;
    border: 1px solid var(--border); transition: all var(--transition);
}
.course-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-lg); border-color: transparent; }
.course-card.hidden { display: none; }
.course-cover { height: 180px; position: relative; overflow: hidden; }
.course-cover img { width: 100%; height: 100%; object-fit: cover; display: block; transition: transform 0.4s ease; }
.course-card:hover .course-cover img { transform: scale(1.05); }
.course-badge {
    position: absolute; top: 14px; right: 14px;
    padding: 4px 14px; background: rgba(255,255,255,0.92);
    border-radius: var(--radius-full); font-size: 0.75rem; font-weight: 700; color: var(--primary);
    z-index: 2;
}
/* Course cover images */
.course-info { padding: 22px; }
.course-tag { font-size: 0.75rem; font-weight: 600; color: var(--primary); letter-spacing: 0.03em; }
.course-info h3 { font-size: 1.1875rem; font-weight: 700; color: var(--secondary); margin: 6px 0 8px; }
.course-info p { font-size: 0.875rem; color: var(--text-secondary); line-height: 1.7; margin-bottom: 14px; }
.course-meta { display: flex; gap: 20px; font-size: 0.8125rem; color: var(--text-light); }
.course-price {
    display: flex; align-items: baseline; gap: 4px;
    margin-top: 14px; padding-top: 14px; border-top: 1px dashed var(--border);
}
.course-price .price-symbol { font-size: 0.875rem; font-weight: 700; color: var(--accent); }
.course-price .price-range { font-family: var(--font-serif); font-size: 1.375rem; font-weight: 900; color: var(--accent); }
.course-price .price-unit { font-size: 0.75rem; color: var(--text-light); margin-left: 4px; }

/* ========== About ========== */
.about { padding: 100px 0; background: var(--bg-warm); }
.about-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.about-card {
    padding: 36px 30px; background: #fff; border-radius: var(--radius-lg);
    border: 1px solid var(--border); transition: all var(--transition); position: relative;
}
.about-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); border-color: transparent; }
.about-num {
    font-family: var(--font-serif); font-size: 3rem; font-weight: 900;
    color: var(--primary-100); line-height: 1; margin-bottom: 12px;
}
.about-card h3 { font-family: var(--font-serif); font-size: 1.25rem; font-weight: 700; color: var(--secondary); margin-bottom: 10px; }
.about-card p { font-size: 0.9375rem; color: var(--text-secondary); line-height: 1.8; }

/* ========== Teachers ========== */
.teachers { padding: 100px 0; background: var(--bg); }
.teachers-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.teacher-card {
    display: flex; gap: 24px; padding: 32px;
    background: #fff; border-radius: var(--radius-lg);
    border: 1px solid var(--border); transition: all var(--transition);
}
.teacher-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); border-color: transparent; }
.teacher-avatar {
    width: 72px; height: 72px; border-radius: 18px;
    display: flex; align-items: center; justify-content: center;
    font-size: 1.5rem; font-weight: 700; color: #fff; flex-shrink: 0;
    font-family: var(--font-serif);
}
.teacher-info { flex: 1; }
.teacher-info h3 { font-size: 1.1875rem; font-weight: 700; color: var(--secondary); margin-bottom: 4px; }
.teacher-title { font-size: 0.8125rem; color: var(--primary); font-weight: 600; display: block; margin-bottom: 8px; }
.teacher-info p { font-size: 0.875rem; color: var(--text-secondary); line-height: 1.7; margin-bottom: 12px; }
.teacher-tags { display: flex; gap: 8px; flex-wrap: wrap; }
.teacher-tags span {
    padding: 4px 12px; background: var(--primary-50); color: var(--primary);
    border-radius: var(--radius-full); font-size: 0.75rem; font-weight: 600;
}

/* ========== Gallery ========== */
.gallery { padding: 100px 0; background: var(--bg-warm); }
.gallery-grid { display: grid; grid-template-columns: repeat(3, 1fr); grid-auto-rows: 210px; gap: 20px; }
.gallery-item {
    position: relative; border-radius: var(--radius-lg); overflow: hidden;
    cursor: pointer; transition: all var(--transition);
}
.gallery-item:hover { transform: scale(1.02); box-shadow: var(--shadow-lg); }
.gallery-wide { grid-column: span 2; }
.gallery-overlay {
    position: absolute; inset: 0; display: flex; flex-direction: column;
    align-items: center; justify-content: center;
    transition: all var(--transition); color: var(--secondary);
    background: rgba(255,255,255,0.15);
}
.gallery-item:hover .gallery-overlay { background: rgba(255,255,255,0.3); }
.gallery-dark { color: #fff; }
.gallery-dark h3 { color: #fff; }
.gallery-dark p { color: rgba(255,255,255,0.7); }
.gallery-overlay h3 { font-family: var(--font-serif); font-size: 1.375rem; font-weight: 700; margin-bottom: 6px; }
.gallery-overlay p { font-size: 0.875rem; color: var(--text-secondary); text-align: center; padding: 0 20px; }

/* ========== FAQ ========== */

/* ========== Order Section ========== */
.order-section { padding: 80px 0; background: var(--bg); }
.order-wrapper {
    display: flex; align-items: center; gap: 60px;
    padding: 48px; background: var(--bg-warm);
    border-radius: var(--radius-lg); border: 1px solid var(--border);
}
.order-content { flex: 1; }
.order-title {
    font-family: var(--font-serif); font-size: 2rem;
    font-weight: 700; color: var(--secondary); margin: 12px 0 14px; line-height: 1.3;
}
.order-desc { font-size: 1rem; color: var(--text-secondary); line-height: 1.8; margin-bottom: 28px; }
.order-steps { display: flex; gap: 20px; }
.order-step { display: flex; align-items: center; gap: 10px; }
.os-num {
    width: 28px; height: 28px; display: flex; align-items: center; justify-content: center;
    background: var(--primary); color: #fff; border-radius: 50%;
    font-size: 0.8125rem; font-weight: 700; flex-shrink: 0;
}
.os-text { font-size: 0.9375rem; color: var(--text); font-weight: 500; }
.order-qr { flex-shrink: 0; }
.qr-card {
    padding: 24px; background: #fff; border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md); text-align: center;
}
.qr-img { width: 200px; height: 200px; display: block; margin: 0 auto 12px; border-radius: 8px; }
.qr-hint { font-size: 0.8125rem; color: var(--text-light); font-weight: 500; }

@media (max-width: 768px) {
    .order-wrapper { flex-direction: column; padding: 32px 24px; gap: 32px; text-align: center; }
    .order-steps { flex-direction: column; align-items: center; gap: 12px; }
    .order-step { justify-content: center; }
}

/* ========== FAQ ========== */
.faq { padding: 100px 0; background: var(--bg); }
.faq-list { max-width: 780px; margin: 0 auto; display: flex; flex-direction: column; gap: 12px; }
.faq-item { border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; transition: all var(--transition); }
.faq-item:hover { border-color: var(--primary-100); }
.faq-item.active { border-color: var(--primary); box-shadow: var(--shadow); }
.faq-question {
    width: 100%; display: flex; align-items: center; justify-content: space-between;
    padding: 20px 24px; font-size: 1rem; font-weight: 600; color: var(--secondary);
    text-align: left; background: #fff; transition: all var(--transition);
}
.faq-question:hover { color: var(--primary); }
.faq-arrow { width: 20px; height: 20px; position: relative; flex-shrink: 0; margin-left: 16px; }
.faq-arrow::before, .faq-arrow::after { content: ''; position: absolute; background: var(--text-secondary); border-radius: 1px; transition: transform var(--transition); }
.faq-arrow::before { width: 12px; height: 2px; top: 9px; left: 4px; }
.faq-arrow::after { width: 2px; height: 12px; top: 4px; left: 9px; }
.faq-item.active .faq-arrow::after { transform: rotate(90deg); }
.faq-answer { max-height: 0; overflow: hidden; transition: max-height 0.4s ease; }
.faq-answer p { padding: 0 24px 20px; font-size: 0.9375rem; color: var(--text-secondary); line-height: 1.8; }

/* ========== Contact ========== */
.contact { padding: 100px 0; background: var(--bg-warm); }
.contact-wrapper { display: flex; justify-content: center; }
.contact-info { display: flex; flex-direction: row; gap: 20px; flex-wrap: wrap; justify-content: center; }
.info-card {
    padding: 24px 32px; background: #fff; border-radius: var(--radius);
    border: 1px solid var(--border); transition: all var(--transition);
    min-width: 180px; text-align: center;
}
.info-card:hover { transform: translateY(-2px); box-shadow: var(--shadow); border-color: var(--primary-100); }
.info-label { font-size: 0.8125rem; font-weight: 600; color: var(--primary); text-transform: uppercase; letter-spacing: 0.05em; margin-bottom: 4px; }
.info-card p { font-size: 0.9375rem; color: var(--secondary); font-weight: 600; }
.contact-form { padding: 36px; background: #fff; border-radius: var(--radius-lg); box-shadow: var(--shadow-md); }
.form-title { font-family: var(--font-serif); font-size: 1.375rem; font-weight: 700; color: var(--secondary); margin-bottom: 24px; text-align: center; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-bottom: 16px; }
.form-group input, .form-group textarea, .form-select {
    width: 100%; padding: 14px 18px; border: 1px solid var(--border-dark);
    border-radius: var(--radius); font-size: 0.9375rem; color: var(--text);
    background: var(--bg-light); transition: all var(--transition); outline: none; appearance: none;
}
.form-group input:focus, .form-group textarea:focus, .form-select:focus { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(124,58,237,0.1); background: #fff; }
.form-group textarea { resize: vertical; min-height: 80px; }
.form-full { margin-bottom: 20px; margin-top: 16px; }
.form-group input::placeholder, .form-group textarea::placeholder { color: var(--text-light); }
.form-select {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath d='M6 8L1 3h10z' fill='%239ca3af'/%3E%3C/svg%3E");
    background-repeat: no-repeat; background-position: right 16px center; padding-right: 40px; color: var(--text-light);
}
.form-select option { color: var(--text); }
.form-note { text-align: center; font-size: 0.8125rem; color: var(--text-light); margin-top: 12px; }

/* ========== Footer ========== */
.footer { background: var(--secondary); color: rgba(255,255,255,0.7); padding: 60px 0 0; }
.footer-top { display: grid; grid-template-columns: 1fr 2fr; gap: 60px; padding-bottom: 44px; border-bottom: 1px solid rgba(255,255,255,0.1); }
.footer-slogan { margin-top: 14px; font-size: 0.9375rem; color: rgba(255,255,255,0.4); }
.footer-links { display: grid; grid-template-columns: repeat(3, 1fr); gap: 40px; }
.footer-col { display: flex; flex-direction: column; gap: 12px; }
.footer-col h4 { font-size: 1rem; font-weight: 700; color: #fff; margin-bottom: 4px; }
.footer-col a, .footer-col span { font-size: 0.875rem; color: rgba(255,255,255,0.45); transition: color var(--transition); }
.footer-col a:hover { color: rgba(255,255,255,0.8); }
.footer-bottom { padding: 22px 0; display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 12px; }
.footer-bottom p { font-size: 0.8125rem; color: rgba(255,255,255,0.35); }
.footer-filing { display: flex; align-items: center; gap: 12px; }
.footer-filing a { font-size: 0.8125rem; color: rgba(255,255,255,0.35); transition: color var(--transition); }
.footer-filing a:hover { color: rgba(255,255,255,0.6); }
.filing-divider { color: rgba(255,255,255,0.15); }

/* ========== Back to Top ========== */
.back-to-top {
    position: fixed; bottom: 32px; right: 32px; width: 48px; height: 48px;
    display: flex; align-items: center; justify-content: center;
    background: var(--primary); color: #fff; border-radius: 50%;
    box-shadow: var(--shadow-md); opacity: 0; visibility: hidden;
    transform: translateY(20px); transition: all var(--transition); z-index: 999;
}
.back-to-top svg { width: 20px; height: 20px; }
.back-to-top.visible { opacity: 1; visibility: visible; transform: translateY(0); }
.back-to-top:hover { transform: translateY(-4px); box-shadow: 0 8px 25px rgba(124,58,237,0.4); }

/* ========== Animations ========== */
.fade-up { opacity: 0; transform: translateY(24px); transition: opacity 0.6s ease, transform 0.6s ease; }
.fade-up.visible { opacity: 1; transform: translateY(0); }

/* ========== Responsive ========== */
@media (max-width: 1024px) {
    .hero-inner { grid-template-columns: 1fr; text-align: center; }
    .hero-content { order: 1; } .hero-visual { order: 0; margin-bottom: 20px; }
    .hero-desc { margin: 0 auto 32px; }
    .hero-actions { justify-content: center; }
    .hero-title { font-size: 2.75rem; }
    .courses-grid { grid-template-columns: repeat(2, 1fr); }
    .teachers-grid { grid-template-columns: 1fr; }
    .gallery-grid { grid-template-columns: repeat(2, 1fr); }
    .gallery-wide { grid-column: span 2; }
    .contact-wrapper { grid-template-columns: 1fr; }
    .footer-top { grid-template-columns: 1fr; gap: 40px; }
}
@media (max-width: 768px) {
    .nav { display: none; }
    .nav.open {
        display: flex; flex-direction: column; position: fixed;
        top: 0; left: 0; right: 0; bottom: 0;
        background: rgba(255,255,255,0.98); backdrop-filter: blur(20px);
        justify-content: center; align-items: center; gap: 12px; z-index: 5;
    }
    .nav.open .nav-link { color: var(--text); font-size: 1.125rem; padding: 12px 24px; }
    .mobile-toggle { display: flex; }
    .hero { padding: 100px 0 60px; min-height: auto; }
    .hero-title { font-size: 2.25rem; }
    .section-title { font-size: 2rem; }
    .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 24px; }
    .courses-grid { grid-template-columns: 1fr; }
    .about-grid { grid-template-columns: 1fr; }
    .gallery-grid { grid-template-columns: 1fr; }
    .gallery-wide { grid-column: span 1; }
    .form-row { grid-template-columns: 1fr; }
    .footer-links { grid-template-columns: 1fr; gap: 24px; }
    .footer-bottom { flex-direction: column; text-align: center; }
    .footer-filing { flex-direction: column; gap: 4px; }
    .filing-divider { display: none; }
    .hero-scroll { display: none; }
}
@media (max-width: 480px) {
    .hero-title { font-size: 1.875rem; }
    .section-title { font-size: 1.625rem; }
    .hero-actions { flex-direction: column; }
    .btn { padding: 12px 24px; font-size: 0.9375rem; }
}