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

:root {
    --blue-50: #0c1929;
    --blue-100: #0f2240;
    --blue-200: #1a3a5c;
    --blue-300: #2563eb;
    --blue-400: #3b82f6;
    --blue-500: #3b82f6;
    --blue-600: #3b82f6;
    --blue-700: #60a5fa;
    --blue-800: #93c5fd;
    --blue-900: #1e3a5f;

    --white: #0a0a0f;
    --gray-50: #111118;
    --gray-100: #18181f;
    --gray-200: #23232e;
    --gray-300: #32323f;
    --gray-400: #6b6b80;
    --gray-500: #8b8ba0;
    --gray-600: #a0a0b4;
    --gray-700: #c0c0d0;
    --gray-800: #e0e0ea;
    --gray-900: #f0f0f5;

    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --radius-xl: 24px;

    --shadow-sm: 0 1px 2px rgba(0,0,0,0.3);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.4);
    --shadow-lg: 0 8px 30px rgba(0,0,0,0.5);
    --shadow-xl: 0 20px 50px rgba(0,0,0,0.6);

    --transition: 0.3s ease;
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    color: var(--gray-800);
    background: var(--white);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    overflow-wrap: break-word;
    word-wrap: break-word;
}

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

ul { list-style: none; }
img { max-width: 100%; display: block; }
button { border: none; background: none; cursor: pointer; font: inherit; }

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    width: 100%;
}

.country-modal {
    position: fixed;
    inset: 0;
    z-index: 10000;
    background: rgba(0, 0, 0, 0.7);
    -webkit-backdrop-filter: blur(8px);
    backdrop-filter: blur(8px);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 1;
    transition: opacity 0.4s ease;
    padding: 20px;
}

.country-modal.hidden {
    opacity: 0;
    pointer-events: none;
}

.country-modal-content {
    background: var(--white);
    border-radius: var(--radius-xl);
    padding: 48px 40px;
    max-width: 640px;
    width: 100%;
    animation: modalSlideUp 0.5s ease;
    border: 1px solid rgba(255,255,255,0.1);
}

@keyframes modalSlideUp {
    from { transform: translateY(40px); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}

.country-modal-header {
    text-align: center;
    margin-bottom: 36px;
}

.country-logo {
    display: flex;
    justify-content: center;
    margin-bottom: 20px;
}

.country-modal-header h2 {
    font-size: 24px;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 8px;
}

.country-modal-header p {
    font-size: 14px;
    color: var(--gray-400);
}

.country-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
}

.country-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    padding: 24px 16px;
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all var(--transition);
    background: var(--white);
}

.country-card:hover {
    border-color: var(--blue-500);
    background: var(--blue-50);
    transform: translateY(-2px);
}

.country-flag {
    font-size: 40px;
    line-height: 1;
}

.country-name {
    font-size: 14px;
    font-weight: 600;
    color: var(--gray-800);
}

.country-currency {
    font-size: 12px;
    color: var(--gray-400);
    font-weight: 500;
}

.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(10, 10, 15, 0.95);
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
    transition: all var(--transition);
    border-bottom: 1px solid rgba(255,255,255,0.06);
}

.header.scrolled {
    border-bottom-color: var(--gray-200);
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 20px;
    font-weight: 800;
    color: var(--gray-900);
}

.nav {
    display: flex;
    gap: 32px;
}

.nav-link {
    font-size: 15px;
    font-weight: 500;
    color: var(--gray-600);
    position: relative;
    padding: 4px 0;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--blue-600);
    border-radius: 2px;
    transition: width var(--transition);
}

.nav-link:hover {
    color: var(--blue-600);
}

.nav-link:hover::after {
    width: 100%;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 12px;
}

.country-switcher {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 8px 12px;
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-md);
    font-size: 14px;
    font-weight: 500;
    color: var(--gray-700);
    transition: all var(--transition);
    cursor: pointer;
}

.country-switcher:hover {
    border-color: var(--blue-300);
    background: var(--blue-50);
}

.burger {
    display: none;
    flex-direction: column;
    gap: 5px;
    width: 28px;
    padding: 4px 0;
}

.burger span {
    display: block;
    height: 2px;
    background: var(--gray-700);
    border-radius: 2px;
    transition: all var(--transition);
}

.burger.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

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

.burger.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    border-radius: var(--radius-md);
    transition: all var(--transition);
    white-space: nowrap;
    cursor: pointer;
}

.btn-sm {
    padding: 8px 20px;
    font-size: 14px;
}

.btn-lg {
    padding: 14px 32px;
    font-size: 16px;
    border-radius: var(--radius-lg);
}

.btn-block {
    width: 100%;
    padding: 14px 24px;
    font-size: 15px;
}

.btn-primary {
    background: var(--blue-600);
    color: #ffffff;
    border: 2px solid var(--blue-600);
}

.btn-primary:hover {
    background: var(--blue-700);
    border-color: var(--blue-700);
    transform: translateY(-1px);
}

.btn-outline {
    background: transparent;
    color: var(--blue-600);
    border: 2px solid var(--blue-200);
}

.btn-outline:hover {
    background: var(--blue-50);
    border-color: var(--blue-400);
    transform: translateY(-1px);
}

.btn-white {
    background: #f0f0f5;
    color: #0c1a30;
    border: 2px solid #f0f0f5;
    font-weight: 700;
}

.btn-white:hover {
    background: #e0e0ea;
    transform: translateY(-1px);
}

.btn-outline-white {
    background: transparent;
    color: #f0f0f5;
    border: 2px solid rgba(255,255,255,0.3);
}

.btn-outline-white:hover {
    background: rgba(255,255,255,0.08);
    border-color: rgba(255,255,255,0.5);
    transform: translateY(-1px);
}

.hero {
    padding: 140px 0 80px;
    background: linear-gradient(180deg, #0c1020 0%, var(--white) 100%);
    overflow: hidden;
    max-width: 100vw;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    min-width: 0;
}

.hero-content > * {
    min-width: 0;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: var(--white);
    border: 1px solid var(--blue-200);
    border-radius: 100px;
    font-size: 14px;
    font-weight: 500;
    color: var(--blue-700);
    margin-bottom: 24px;
}

.badge-dot {
    width: 8px;
    height: 8px;
    background: #22c55e;
    border-radius: 50%;
    animation: pulse-dot 2s infinite;
}

@keyframes pulse-dot {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.4; }
}

.hero-title {
    font-size: 52px;
    font-weight: 800;
    line-height: 1.15;
    color: var(--gray-900);
    margin-bottom: 20px;
}

.typed-wrapper {
    color: var(--blue-600);
    display: inline;
}

.typed-cursor {
    animation: blink 0.8s infinite;
    font-weight: 300;
    color: var(--blue-600);
}

@keyframes blink {
    0%, 100% { opacity: 1; }
    50% { opacity: 0; }
}

.hero-desc {
    font-size: 18px;
    color: var(--gray-500);
    line-height: 1.7;
    margin-bottom: 32px;
    max-width: 520px;
}

.hero-actions {
    display: flex;
    gap: 16px;
    margin-bottom: 48px;
    flex-wrap: wrap;
}

.hero-stats {
    display: flex;
    gap: 40px;
}

.stat {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.stat-number {
    font-size: 28px;
    font-weight: 800;
    color: var(--blue-600);
}

.stat-label {
    font-size: 13px;
    color: var(--gray-400);
    font-weight: 500;
}

.code-window {
    background: #1a1a2e;
    border-radius: var(--radius-xl);
    overflow: hidden;
    position: relative;
    border: 1px solid rgba(255,255,255,0.08);
}

.code-header {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px 20px;
    background: rgba(255,255,255,0.05);
    border-bottom: 1px solid rgba(255,255,255,0.08);
}

.code-dots {
    display: flex;
    gap: 6px;
}

.dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
}

.dot.red { background: #ef4444; }
.dot.yellow { background: #f59e0b; }
.dot.green { background: #22c55e; }

.code-filename {
    font-size: 12px;
    color: var(--gray-400);
    font-family: 'Fira Code', monospace;
}

.code-body {
    padding: 24px;
    font-family: 'Fira Code', 'Courier New', monospace;
    font-size: 13px;
    line-height: 1.8;
    overflow-x: auto;
    max-width: 100%;
}

.code-body pre {
    margin: 0;
    max-width: 100%;
    overflow-x: auto;
}

.code-body code {
    color: #c0c0d0;
}

.code-keyword { color: #c084fc; }
.code-class { color: #67e8f9; }
.code-func { color: #fbbf24; }
.code-param { color: #f472b6; }
.code-string { color: #86efac; }
.code-number { color: #f97316; }
.code-comment { color: var(--gray-500); font-style: italic; }

.code-body pre code {
    opacity: 0;
    animation: fadeInCode 0.8s ease forwards;
    animation-delay: 0.5s;
}

@keyframes fadeInCode {
    to { opacity: 1; }
}

.section-header {
    text-align: center;
    margin-bottom: 48px;
}

.section-tag {
    display: inline-block;
    padding: 6px 16px;
    background: var(--blue-50);
    color: var(--blue-600);
    font-size: 13px;
    font-weight: 600;
    border-radius: 100px;
    margin-bottom: 16px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.section-title {
    font-size: 36px;
    font-weight: 800;
    color: var(--gray-900);
    margin-bottom: 12px;
}

.section-desc {
    font-size: 17px;
    color: var(--gray-500);
    max-width: 540px;
    margin: 0 auto;
}

.courses {
    padding: 100px 0;
}

.courses-filter {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin-bottom: 40px;
    flex-wrap: wrap;
}

.filter-btn {
    padding: 10px 24px;
    font-size: 14px;
    font-weight: 600;
    color: var(--gray-500);
    border: 1px solid var(--gray-200);
    border-radius: 100px;
    transition: all var(--transition);
    cursor: pointer;
}

.filter-btn:hover {
    color: var(--blue-600);
    border-color: var(--blue-300);
    background: var(--blue-50);
}

.filter-btn.active {
    background: var(--blue-600);
    color: #ffffff;
    border-color: var(--blue-600);
}

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

.courses-grid > * {
    min-width: 0;
}

.course-card {
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-lg);
    padding: 28px 24px;
    transition: all 0.4s ease;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.course-card:hover {
    transform: translateY(-4px);
    border-color: var(--blue-300);
    background: var(--blue-50);
}

.course-card.hidden-card {
    display: none;
}

.course-icon {
    margin-bottom: 16px;
    display: flex;
    justify-content: center;
}

.course-level {
    margin-bottom: 8px;
}

.course-level span {
    font-size: 12px;
    font-weight: 600;
    color: var(--blue-600);
    background: var(--blue-100);
    padding: 4px 10px;
    border-radius: 100px;
}

.course-title {
    font-size: 20px;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 8px;
}

.course-text {
    font-size: 14px;
    color: var(--gray-500);
    line-height: 1.6;
    margin-bottom: 16px;
    flex-grow: 1;
}

.course-meta {
    display: flex;
    justify-content: center;
    gap: 16px;
    font-size: 13px;
    color: var(--gray-400);
    margin-bottom: 20px;
}

.course-footer {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    width: 100%;
    padding-top: 16px;
    border-top: 1px solid var(--gray-100);
}

.course-price {
    font-size: 20px;
    font-weight: 800;
    color: var(--gray-900);
    white-space: nowrap;
}

.features {
    padding: 100px 0;
    background: var(--gray-50);
}

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

.feature-card {
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-lg);
    padding: 36px 28px;
    transition: all 0.4s ease;
    text-align: center;
}

.feature-card:hover {
    transform: translateY(-4px);
    border-color: var(--blue-200);
}

.feature-icon {
    font-size: 36px;
    margin-bottom: 20px;
    text-align: center;
}

.feature-card h3 {
    font-size: 18px;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 10px;
}

.feature-card p {
    font-size: 14px;
    color: var(--gray-500);
    line-height: 1.7;
}

.pricing {
    padding: 100px 0;
}

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

.pricing-card {
    background: var(--white);
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-xl);
    padding: 40px 32px;
    transition: all 0.4s ease;
    position: relative;
}

.pricing-card:hover {
    transform: translateY(-4px);
    border-color: var(--blue-300);
}

.pricing-card.popular {
    border-color: var(--blue-600);
    transform: scale(1.03);
}

.pricing-card.popular:hover {
    transform: scale(1.03) translateY(-4px);
}

.popular-badge {
    position: absolute;
    top: -14px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--blue-600);
    color: #ffffff;
    padding: 6px 24px;
    border-radius: 100px;
    font-size: 13px;
    font-weight: 600;
}

.pricing-header {
    text-align: center;
    margin-bottom: 32px;
}

.pricing-header h3 {
    font-size: 20px;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 16px;
}

.pricing-amount {
    display: flex;
    align-items: baseline;
    justify-content: center;
    gap: 4px;
}

.price {
    font-size: 36px;
    font-weight: 800;
    color: var(--gray-900);
    white-space: nowrap;
}

.price-period {
    font-size: 15px;
    color: var(--gray-400);
    font-weight: 500;
}

.pricing-features {
    margin-bottom: 32px;
}

.pricing-features li {
    padding: 10px 0;
    font-size: 14px;
    color: var(--gray-700);
    border-bottom: 1px solid var(--gray-100);
}

.pricing-features li.disabled {
    color: var(--gray-400);
    opacity: 0.5;
}

.reviews {
    padding: 100px 0;
    background: var(--gray-50);
}

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

.review-card {
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-lg);
    padding: 32px 28px;
    transition: all 0.4s ease;
    text-align: center;
}

.review-card:hover {
    transform: translateY(-2px);
    border-color: var(--blue-200);
}

.review-stars {
    color: #f59e0b;
    font-size: 18px;
    margin-bottom: 16px;
    letter-spacing: 2px;
    text-align: center;
}

.review-text {
    font-size: 15px;
    color: var(--gray-600);
    line-height: 1.7;
    margin-bottom: 24px;
    font-style: italic;
}

.review-author {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
}

.review-avatar {
    width: 44px;
    height: 44px;
    background: var(--blue-100);
    color: var(--blue-700);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 14px;
}

.review-author strong {
    display: block;
    font-size: 14px;
    color: var(--gray-800);
}

.review-author span {
    font-size: 13px;
    color: var(--gray-400);
}

.faq {
    padding: 100px 0;
}

.faq-list {
    max-width: 720px;
    margin: 0 auto;
}

.faq-item {
    border-bottom: 1px solid var(--gray-200);
}

.faq-question {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    padding: 24px 0;
    font-size: 16px;
    font-weight: 600;
    color: var(--gray-800);
    text-align: left;
    cursor: pointer;
    transition: color var(--transition);
}

.faq-question:hover {
    color: var(--blue-600);
}

.faq-arrow {
    transition: transform var(--transition);
    flex-shrink: 0;
    margin-left: 16px;
}

.faq-item.open .faq-arrow {
    transform: rotate(180deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease, padding 0.4s ease;
}

.faq-item.open .faq-answer {
    max-height: 300px;
}

.faq-answer p {
    padding-bottom: 24px;
    font-size: 15px;
    color: var(--gray-500);
    line-height: 1.7;
}

.cta {
    padding: 100px 0;
    background: linear-gradient(135deg, #0c1a30 0%, #162444 100%);
}

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

.cta-content h2 {
    font-size: 36px;
    font-weight: 800;
    color: #f0f0f5;
    margin-bottom: 16px;
}

.cta-content p {
    font-size: 18px;
    color: #93c5fd;
    margin-bottom: 36px;
    max-width: 520px;
    margin-left: auto;
    margin-right: auto;
}

.cta-actions {
    display: flex;
    justify-content: center;
    gap: 16px;
    flex-wrap: wrap;
}

.footer {
    padding: 64px 0 32px;
    background: #050508;
    color: #8b8ba0;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 48px;
}

.footer-grid > * {
    min-width: 0;
}

.footer .logo {
    margin-bottom: 16px;
    color: #f0f0f5;
    justify-content: center;
}

.footer-about {
    font-size: 14px;
    line-height: 1.7;
    margin-bottom: 20px;
    text-align: center;
}

.footer-socials {
    display: flex;
    gap: 12px;
    justify-content: center;
}

.footer-socials a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border: 1px solid #32323f;
    border-radius: var(--radius-md);
    color: #8b8ba0;
    transition: all var(--transition);
}

.footer-socials a:hover {
    color: var(--blue-400);
    border-color: var(--blue-400);
}

.footer-col h4 {
    font-size: 14px;
    font-weight: 700;
    color: #f0f0f5;
    margin-bottom: 20px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    text-align: center;
}

.footer-col ul li {
    margin-bottom: 12px;
    text-align: center;
}

.footer-col ul a {
    font-size: 14px;
    color: #8b8ba0;
}

.footer-col ul a:hover {
    color: var(--blue-400);
}

.footer-email {
    margin-top: 16px;
    font-size: 14px;
    color: var(--blue-400);
    font-weight: 500;
    text-align: center;
}

.footer-bottom {
    padding-top: 32px;
    border-top: 1px solid rgba(255,255,255,0.08);
    text-align: center;
    font-size: 13px;
    color: #6b6b80;
}

.payment-modal {
    position: fixed;
    inset: 0;
    z-index: 10001;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    opacity: 1;
    transition: opacity 0.3s ease;
}

.payment-modal.hidden {
    opacity: 0;
    pointer-events: none;
}

.payment-modal-overlay {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.7);
    -webkit-backdrop-filter: blur(8px);
    backdrop-filter: blur(8px);
}

.payment-modal-content {
    position: relative;
    background: var(--white);
    border-radius: var(--radius-xl);
    padding: 40px;
    max-width: 520px;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
    animation: modalSlideUp 0.4s ease;
    z-index: 1;
    border: 1px solid rgba(255,255,255,0.1);
}

.payment-close {
    position: absolute;
    top: 16px;
    right: 16px;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-md);
    color: var(--gray-400);
    transition: all var(--transition);
    cursor: pointer;
}

.payment-close:hover {
    background: var(--gray-100);
    color: var(--gray-700);
}

.payment-step.hidden {
    display: none;
}

.payment-header {
    text-align: center;
    margin-bottom: 28px;
}

.payment-header h2 {
    font-size: 22px;
    font-weight: 800;
    color: var(--gray-900);
    margin-bottom: 6px;
}

.payment-header p {
    font-size: 14px;
    color: var(--gray-400);
}

.payment-order-summary {
    background: var(--gray-50);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-lg);
    padding: 16px 20px;
    margin-bottom: 28px;
}

.payment-product {
    display: flex;
    align-items: center;
    gap: 14px;
}

.payment-product-icon {
    font-size: 32px;
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--blue-100);
    border-radius: var(--radius-md);
    flex-shrink: 0;
}

.payment-product strong {
    display: block;
    font-size: 15px;
    color: var(--gray-900);
}

.payment-product-meta {
    font-size: 13px;
    color: var(--gray-400);
}

.payment-product-price {
    margin-left: auto;
    font-size: 18px;
    font-weight: 800;
    color: var(--blue-600);
    white-space: nowrap;
}

.payment-fields {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.field-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.field-group label {
    font-size: 13px;
    font-weight: 600;
    color: var(--gray-600);
}

.field-group input {
    padding: 12px 16px;
    border: 1.5px solid var(--gray-300);
    border-radius: var(--radius-md);
    font-size: 15px;
    font-family: inherit;
    color: var(--gray-800);
    background: var(--gray-50);
    transition: border-color var(--transition);
    outline: none;
}

.field-group input:focus {
    border-color: var(--blue-500);
}

.field-group input::placeholder {
    color: var(--gray-400);
}

.payment-separator {
    height: 1px;
    background: var(--gray-200);
    margin: 24px 0;
}

.payment-section-title {
    font-size: 15px;
    font-weight: 700;
    color: var(--gray-800);
    margin-bottom: 14px;
}

.payment-methods {
    display: flex;
    gap: 10px;
    margin-bottom: 20px;
}

.payment-method {
    flex: 1;
    cursor: pointer;
}

.payment-method input {
    display: none;
}

.method-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    padding: 16px 12px;
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-lg);
    font-size: 12px;
    font-weight: 600;
    color: var(--gray-500);
    text-align: center;
    transition: all var(--transition);
}

.payment-method input:checked + .method-content {
    border-color: var(--blue-500);
    background: var(--blue-50);
    color: var(--blue-700);
}

.method-content:hover {
    border-color: var(--blue-300);
}

.card-details {
    display: flex;
    flex-direction: column;
    gap: 14px;
    margin-bottom: 20px;
    animation: fadeUp 0.3s ease;
}

.card-details.hidden-details {
    display: none;
}

.card-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 14px;
}

.payment-total {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 0;
    border-top: 1px solid var(--gray-200);
    margin-bottom: 16px;
}

.payment-total span {
    font-size: 15px;
    color: var(--gray-500);
}

.payment-total strong {
    font-size: 22px;
    font-weight: 800;
    color: var(--gray-900);
    white-space: nowrap;
}

.payment-submit {
    font-size: 16px;
    padding: 16px 24px;
    gap: 8px;
}

.payment-submit svg {
    flex-shrink: 0;
}

.seller-card-block {
    background: linear-gradient(135deg, #0a0e1a 0%, #0f1d33 100%);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-lg);
    padding: 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    margin-bottom: 12px;
    flex-wrap: wrap;
}

.seller-card-number {
    font-family: 'Fira Code', 'Courier New', monospace;
    font-size: 20px;
    font-weight: 700;
    color: #ffffff;
    letter-spacing: 2px;
    -webkit-user-select: all;
    user-select: all;
}

.copy-card-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 14px;
    background: rgba(255,255,255,0.15);
    border: 1px solid rgba(255,255,255,0.25);
    border-radius: var(--radius-md);
    color: #ffffff;
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition);
    white-space: nowrap;
}

.copy-card-btn:hover {
    background: rgba(255,255,255,0.25);
}

.copy-card-btn.copied {
    background: #22c55e;
    border-color: #22c55e;
}

.seller-card-holder {
    font-size: 14px;
    color: var(--gray-500);
    margin-bottom: 4px;
}

.seller-card-bank {
    font-size: 14px;
    font-weight: 600;
    color: var(--gray-700);
    margin-bottom: 8px;
}

.btn-telegram {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 16px 24px;
    background: #229ED9;
    color: #ffffff;
    border: none;
    border-radius: var(--radius-md);
    font-size: 16px;
    font-weight: 700;
    font-family: inherit;
    cursor: pointer;
    text-decoration: none;
    transition: all var(--transition);
    margin-top: 20px;
}

.btn-telegram:hover {
    background: #1a8ac4;
    transform: translateY(-1px);
}

.btn-telegram svg {
    flex-shrink: 0;
}

.btn-outline {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 24px;
    background: transparent;
    color: var(--gray-600);
    border: 1.5px solid var(--gray-200);
    border-radius: var(--radius-md);
    font-size: 15px;
    font-weight: 600;
    font-family: inherit;
    cursor: pointer;
    transition: all var(--transition);
}

.btn-outline:hover {
    background: var(--gray-50);
    border-color: var(--gray-300);
    color: var(--gray-800);
}

.pay-close-btn {
    margin-top: 10px;
}

.pay-instruction {
    font-size: 14px;
    color: var(--gray-500);
    text-align: center;
    line-height: 1.6;
    margin-top: 20px;
    margin-bottom: 0;
    padding: 14px 16px;
    background: var(--blue-50);
    border-radius: var(--radius-md);
    border-left: 3px solid var(--blue-400);
}

.payment-note {
    font-size: 12px;
    color: var(--gray-400);
    text-align: center;
    line-height: 1.6;
    margin-top: 16px;
}

.pay-coming-soon-notice {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 16px;
    background: var(--blue-50);
    border-radius: var(--radius-md);
    border-left: 3px solid var(--blue-400);
    margin-bottom: 16px;
}

.pay-coming-soon-notice svg {
    flex-shrink: 0;
    color: var(--blue-500);
    margin-top: 2px;
}

.pay-coming-soon-notice p {
    font-size: 14px;
    color: var(--gray-600);
    line-height: 1.6;
    margin: 0;
}

.spinner {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255,255,255,0.3);
    border-top-color: #ffffff;
    border-radius: 50%;
    animation: spin 0.7s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.payment-success {
    text-align: center;
    padding: 20px 0;
}

.success-icon {
    width: 72px;
    height: 72px;
    background: #22c55e;
    color: #ffffff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 32px;
    font-weight: 700;
    margin: 0 auto 24px;
    animation: scaleIn 0.5s ease;
}

@keyframes scaleIn {
    from { transform: scale(0); }
    50% { transform: scale(1.15); }
    to { transform: scale(1); }
}

.payment-success h2 {
    font-size: 24px;
    font-weight: 800;
    color: var(--gray-900);
    margin-bottom: 10px;
}

.payment-success p {
    font-size: 15px;
    color: var(--gray-500);
    margin-bottom: 24px;
    line-height: 1.6;
}

.success-details {
    background: var(--gray-50);
    border-radius: var(--radius-lg);
    padding: 16px 20px;
    margin-bottom: 28px;
    font-size: 14px;
    color: var(--gray-600);
    line-height: 1.8;
    word-break: break-word;
}

.telegram-receipt-info {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 14px 20px;
    background: rgba(34, 158, 217, 0.1);
    border-radius: var(--radius-lg);
    margin-bottom: 24px;
    font-size: 14px;
    font-weight: 600;
    color: #229ED9;
}

.telegram-receipt-info svg {
    flex-shrink: 0;
}

.animate-fade-up {
    opacity: 0;
    transform: translateY(30px);
    animation: fadeUp 0.7s ease forwards;
}

.delay-1 { animation-delay: 0.15s; }
.delay-2 { animation-delay: 0.3s; }
.delay-3 { animation-delay: 0.45s; }
.delay-4 { animation-delay: 0.6s; }

@keyframes fadeUp {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.animate-on-scroll {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.animate-on-scroll.visible {
    opacity: 1;
    transform: translateY(0);
}

*::-webkit-scrollbar {
    display: none;
}

* {
    scrollbar-width: none;
    -ms-overflow-style: none;
}

@media (max-width: 1024px) {
    .hero-title {
        font-size: 40px;
    }

    .courses-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .pricing-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 16px;
    }

    .pricing-card {
        padding: 32px 24px;
    }

    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .section-title {
        font-size: 32px;
    }

    .container {
        padding: 0 24px;
    }
}

@media (max-width: 868px) {
    .nav {
        display: none;
        position: fixed;
        top: 72px;
        left: 0;
        right: 0;
        bottom: 0;
        background: var(--white);
        flex-direction: column;
        padding: 20px;
        gap: 0;
        border-bottom: 1px solid var(--gray-200);
        overflow-y: auto;
        z-index: 999;
    }

    .nav.open {
        display: flex;
    }

    .nav-link {
        padding: 14px 0;
        border-bottom: 1px solid var(--gray-100);
        font-size: 16px;
    }

    .burger {
        display: flex;
    }

    .header-actions .btn-sm {
        padding: 6px 14px;
        font-size: 13px;
    }

    .hero-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .hero-title {
        font-size: 36px;
    }

    .hero-visual {
        order: -1;
    }

    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .pricing-grid {
        grid-template-columns: 1fr;
        max-width: 400px;
        margin-left: auto;
        margin-right: auto;
    }

    .pricing-card.popular {
        transform: none;
    }

    .pricing-card.popular:hover {
        transform: translateY(-4px);
    }

    .reviews-grid {
        grid-template-columns: 1fr;
        max-width: 500px;
        margin-left: auto;
        margin-right: auto;
    }

    .cta-content h2 {
        font-size: 28px;
    }

    .payment-modal {
        padding: 16px;
    }

    .payment-modal-content {
        padding: 32px 28px;
    }

    .country-modal-content {
        padding: 36px 28px;
    }
}

@media (max-width: 600px) {
    .container {
        padding: 0 16px;
    }

    .country-modal {
        padding: 12px;
    }

    .country-modal-content {
        padding: 28px 16px;
    }

    .country-modal-header h2 {
        font-size: 22px;
    }

    .country-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 10px;
    }

    .country-card {
        padding: 16px 12px;
    }

    .country-flag {
        font-size: 32px;
    }

    .hero {
        padding: 100px 0 50px;
    }

    .hero-title {
        font-size: 28px;
    }

    .hero-desc {
        font-size: 15px;
    }

    .hero-stats {
        gap: 24px;
        flex-wrap: wrap;
        justify-content: center;
    }

    .stat-number {
        font-size: 22px;
    }

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

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

    .code-window {
        border-radius: var(--radius-lg);
    }

    .code-body {
        font-size: 11px;
        padding: 16px;
        overflow-x: hidden;
        word-break: break-all;
    }

    .code-header {
        padding: 12px 16px;
    }

    .section-header {
        margin-bottom: 36px;
    }

    .section-tag {
        font-size: 12px;
    }

    .section-title {
        font-size: 24px;
    }

    .section-desc {
        font-size: 14px;
    }

    .courses-grid {
        grid-template-columns: 1fr;
    }

    .course-card {
        max-width: 100%;
    }

    .features-grid {
        grid-template-columns: 1fr;
    }

    .pricing-grid {
        max-width: 100%;
    }

    .pricing-card {
        padding: 28px 20px;
    }

    .pricing-amount {
        font-size: 36px;
    }

    .review-card {
        padding: 28px 20px;
    }

    .faq-question {
        font-size: 15px;
        padding: 18px 0;
    }

    .cta-content h2 {
        font-size: 24px;
    }

    .cta-content p {
        font-size: 15px;
    }

    .cta-actions {
        flex-direction: column;
        align-items: center;
    }

    .cta-actions .btn {
        width: 100%;
        max-width: 320px;
    }

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

    .footer-col h4 {
        font-size: 14px;
    }

    .footer-bottom {
        font-size: 12px;
    }

    .payment-modal {
        padding: 8px;
        align-items: flex-end;
    }

    .payment-modal-content {
        padding: 24px 16px;
        max-height: 95vh;
        border-radius: var(--radius-xl) var(--radius-xl) 0 0;
    }

    .payment-methods {
        flex-direction: column;
    }

    .method-content {
        flex-direction: row;
        padding: 12px 16px;
    }

    .card-row {
        grid-template-columns: 1fr;
    }

    .payment-header h2 {
        font-size: 20px;
    }

    .payment-product {
        flex-direction: column;
        text-align: center;
        gap: 10px;
    }

    .payment-product-price {
        margin-left: 0;
    }

    .seller-card-block {
        padding: 18px 14px;
        flex-direction: column;
        text-align: center;
    }

    .seller-card-number {
        font-size: 17px;
        letter-spacing: 1px;
    }

    .btn-telegram {
        font-size: 15px;
        padding: 14px 20px;
    }

    .pay-instruction {
        font-size: 13px;
        padding: 12px 14px;
    }

    .payment-close {
        top: 12px;
        right: 12px;
        width: 36px;
        height: 36px;
    }

    .payment-submit {
        font-size: 15px;
        padding: 14px 20px;
    }

    .payment-total strong {
        font-size: 20px;
    }

    .header-actions .btn-sm {
        display: none;
    }

    .logo {
        font-size: 18px;
    }

    .logo svg {
        width: 36px;
        height: 36px;
    }
}

@media (max-width: 380px) {
    .container {
        padding: 0 12px;
    }

    .country-grid {
        grid-template-columns: 1fr;
    }

    .hero {
        padding: 90px 0 40px;
    }

    .hero-title {
        font-size: 22px;
    }

    .hero-desc {
        font-size: 14px;
    }

    .hero-stats {
        flex-direction: column;
        gap: 12px;
    }

    .stat-number {
        font-size: 20px;
    }

    .section-title {
        font-size: 22px;
    }

    .pricing-amount {
        font-size: 32px;
    }

    .cta-content h2 {
        font-size: 22px;
    }

    .payment-modal-content {
        padding: 20px 12px;
    }

    .payment-order-summary {
        padding: 12px 14px;
    }

    .payment-product-icon {
        width: 40px;
        height: 40px;
        font-size: 24px;
    }
}