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

:root {
    --primary-color: #1a1a2e;
    --secondary-color: #16213e;
    --accent-color: #0f3460;
    --highlight-color: #e94560;
    --text-color: #333;
    --text-light: #666;
    --bg-light: #f8f9fa;
    --white: #ffffff;
    --border-color: #e0e0e0;
    --shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    --shadow-hover: 0 5px 20px rgba(0, 0, 0, 0.15);
    --transition: all 0.3s ease;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--white);
}

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

/* Header */
.header {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: var(--white);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: var(--shadow);
}

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

.logo {
    font-size: 1.8rem;
    font-weight: bold;
    color: var(--white);
}

.nav {
    display: flex;
    gap: 2rem;
    align-items: center;
}

.nav-link {
    color: var(--white);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
    padding: 0.5rem 0;
    position: relative;
}

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

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

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

.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 5px;
}

.menu-toggle span {
    width: 25px;
    height: 3px;
    background-color: var(--white);
    transition: var(--transition);
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--accent-color) 100%);
    color: var(--white);
    padding: 4rem 0;
    text-align: center;
}

.hero-title {
    font-size: 3rem;
    margin-bottom: 1rem;
    animation: fadeInUp 0.8s ease;
}

.hero-subtitle {
    font-size: 1.3rem;
    margin-bottom: 2rem;
    opacity: 0.9;
    animation: fadeInUp 0.8s ease 0.2s both;
}

.btn-play {
    display: inline-block;
    padding: 1.1rem 3rem;
    background: linear-gradient(135deg, #00e676 0%, #00c853 50%, #00a843 100%);
    color: #fff;
    text-decoration: none;
    font-size: 1.4rem;
    font-weight: bold;
    border-radius: 50px;
    box-shadow: 0 6px 25px rgba(0, 230, 118, 0.5);
    transition: var(--transition);
    margin: 0 0.5rem 1.5rem;
    animation: fadeInUp 0.8s ease 0.3s both;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    border: 2px solid rgba(255, 255, 255, 0.4);
}

.btn-play:hover {
    transform: translateY(-4px) scale(1.05);
    box-shadow: 0 8px 30px rgba(0, 230, 118, 0.7);
    background: linear-gradient(135deg, #00c853 0%, #00e676 100%);
}

.hero-button {
    display: inline-block;
    padding: 1rem 2.5rem;
    background: linear-gradient(135deg, var(--highlight-color), #c73650);
    color: var(--white);
    text-decoration: none;
    font-size: 1.2rem;
    font-weight: bold;
    border-radius: 50px;
    box-shadow: 0 4px 15px rgba(233, 69, 96, 0.4);
    transition: var(--transition);
    margin-bottom: 3rem;
    animation: fadeInUp 0.8s ease 0.3s both;
}

.hero-button:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(233, 69, 96, 0.6);
    background: linear-gradient(135deg, #c73650, var(--highlight-color));
}

.hero-features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
    animation: fadeInUp 0.8s ease 0.4s both;
}

.feature-card {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    padding: 2rem;
    border-radius: 10px;
    transition: var(--transition);
}

.feature-card:hover {
    transform: translateY(-5px);
    background: rgba(255, 255, 255, 0.15);
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.feature-card h3 {
    margin-bottom: 0.5rem;
    font-size: 1.3rem;
}

.feature-card p {
    opacity: 0.9;
    font-size: 0.95rem;
}

/* Sections */
.section {
    padding: 4rem 0;
}

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

.section-title {
    font-size: 2.5rem;
    margin-bottom: 2rem;
    color: var(--primary-color);
    text-align: center;
    position: relative;
    padding-bottom: 1rem;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 100px;
    height: 3px;
    background: linear-gradient(90deg, var(--highlight-color), var(--accent-color));
    border-radius: 2px;
}

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

.lead {
    font-size: 1.2rem;
    line-height: 1.8;
    margin-bottom: 2rem;
    color: var(--text-light);
}

.content-link {
    color: var(--highlight-color);
    text-decoration: none;
    font-weight: 600;
    border-bottom: 2px solid transparent;
    transition: var(--transition);
}

.content-link:hover {
    border-bottom-color: var(--highlight-color);
    color: #c73650;
}

/* Advantages */
.advantages {
    margin: 2rem 0;
}

.advantages h3 {
    color: var(--primary-color);
    margin-bottom: 1rem;
    font-size: 1.3rem;
}

.advantages-list {
    list-style: none;
    padding: 0;
}

.advantages-list li {
    padding: 1rem;
    margin-bottom: 0.5rem;
    background: var(--white);
    border-left: 4px solid var(--highlight-color);
    border-radius: 5px;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.advantages-list li:hover {
    transform: translateX(5px);
    box-shadow: var(--shadow-hover);
}

/* Info Boxes */
.info-box,
.warning-box,
.success-box,
.conclusion-box {
    padding: 1.5rem;
    border-radius: 10px;
    margin: 2rem 0;
    line-height: 1.8;
}

.info-box {
    background: linear-gradient(135deg, #e3f2fd 0%, #bbdefb 100%);
    border-left: 4px solid #2196f3;
}

.warning-box {
    background: linear-gradient(135deg, #fff3e0 0%, #ffe0b2 100%);
    border-left: 4px solid #ff9800;
}

.success-box {
    background: linear-gradient(135deg, #e8f5e9 0%, #c8e6c9 100%);
    border-left: 4px solid #4caf50;
}

.conclusion-box {
    background: linear-gradient(135deg, #f3e5f5 0%, #e1bee7 100%);
    border-left: 4px solid #9c27b0;
}

/* Reasons Grid */
.reasons-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin: 2rem 0;
}

.reason-card {
    background: var(--white);
    padding: 2rem;
    border-radius: 10px;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.reason-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
}

.reason-card h3 {
    color: var(--primary-color);
    margin-bottom: 1rem;
    font-size: 1.2rem;
}

.reason-card ul {
    list-style: none;
    padding: 0;
}

.reason-card li {
    padding: 0.8rem 0;
    padding-left: 1.5rem;
    position: relative;
    border-bottom: 1px solid var(--border-color);
}

.reason-card li:last-child {
    border-bottom: none;
}

.reason-card li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--highlight-color);
    font-weight: bold;
}

/* Steps */
.steps {
    margin: 2rem 0;
}

.step-item {
    display: flex;
    gap: 2rem;
    margin-bottom: 2rem;
    align-items: flex-start;
    background: var(--white);
    padding: 2rem;
    border-radius: 10px;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.step-item:hover {
    transform: translateX(10px);
    box-shadow: var(--shadow-hover);
}

.step-number {
    background: linear-gradient(135deg, var(--highlight-color), var(--accent-color));
    color: var(--white);
    width: 60px;
    height: 60px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: bold;
    flex-shrink: 0;
}

.step-content h3 {
    color: var(--primary-color);
    margin-bottom: 0.5rem;
    font-size: 1.2rem;
}

.step-content p {
    color: var(--text-light);
    line-height: 1.7;
}

/* Safety Checklist */
.safety-checklist {
    margin: 2rem 0;
}

.safety-checklist h3 {
    color: var(--primary-color);
    margin-bottom: 1.5rem;
    font-size: 1.3rem;
}

.checklist-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
}

.checklist-item {
    display: flex;
    gap: 1rem;
    background: var(--white);
    padding: 1.5rem;
    border-radius: 10px;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.checklist-item:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-hover);
}

.check-icon {
    background: linear-gradient(135deg, #4caf50, #2e7d32);
    color: var(--white);
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: bold;
    flex-shrink: 0;
}

.checklist-item h4 {
    color: var(--primary-color);
    margin-bottom: 0.3rem;
    font-size: 1.1rem;
}

.checklist-item p {
    color: var(--text-light);
    font-size: 0.95rem;
}

/* Tips Grid */
.tips-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin: 2rem 0;
}

.tips-section {
    background: var(--white);
    padding: 2rem;
    border-radius: 10px;
    box-shadow: var(--shadow);
}

.tips-section h3 {
    color: var(--primary-color);
    margin-bottom: 1rem;
    font-size: 1.2rem;
}

.tips-list {
    list-style: none;
    padding: 0;
}

.tips-list li {
    padding: 1rem;
    margin-bottom: 0.5rem;
    background: var(--bg-light);
    border-left: 4px solid var(--accent-color);
    border-radius: 5px;
    transition: var(--transition);
}

.tips-list li:hover {
    transform: translateX(5px);
    background: #e9ecef;
}

/* FAQ */
.faq-container {
    margin: 2rem 0;
}

.faq-item {
    background: var(--white);
    margin-bottom: 1rem;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.faq-item:hover {
    box-shadow: var(--shadow-hover);
}

.faq-question {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem;
    cursor: pointer;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: var(--white);
    transition: var(--transition);
}

.faq-question:hover {
    background: linear-gradient(135deg, var(--secondary-color), var(--accent-color));
}

.faq-question h3 {
    font-size: 1.1rem;
    font-weight: 500;
    margin: 0;
}

.faq-toggle {
    font-size: 1.5rem;
    font-weight: bold;
    transition: var(--transition);
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.2);
}

.faq-item.active .faq-toggle {
    transform: rotate(45deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
    padding: 0 1.5rem;
}

.faq-item.active .faq-answer {
    max-height: 500px;
    padding: 1.5rem;
}

.faq-answer p {
    color: var(--text-light);
    line-height: 1.8;
}

/* Footer */
.footer {
    background: var(--primary-color);
    color: var(--white);
    padding: 2rem 0;
    text-align: center;
}

.footer-disclaimer {
    margin-top: 0.5rem;
    font-size: 0.9rem;
    opacity: 0.8;
}

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

/* Responsive Design */
@media (max-width: 768px) {
    .nav {
        position: fixed;
        top: 70px;
        left: -100%;
        flex-direction: column;
        background: var(--primary-color);
        width: 100%;
        padding: 2rem;
        transition: var(--transition);
        box-shadow: var(--shadow);
    }

    .nav.active {
        left: 0;
    }

    .menu-toggle {
        display: flex;
    }

    .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);
    }

    .hero-title {
        font-size: 2rem;
    }

    .hero-subtitle {
        font-size: 1.1rem;
    }

    .section-title {
        font-size: 2rem;
    }

    .step-item {
        flex-direction: column;
        text-align: center;
    }

    .step-number {
        margin: 0 auto;
    }

    .reasons-grid,
    .tips-grid,
    .checklist-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 1.5rem;
    }

    .section-title {
        font-size: 1.5rem;
    }

    .feature-card {
        padding: 1.5rem;
    }
}

/* Smooth Scroll */
html {
    scroll-behavior: smooth;
}

/* Selection */
::selection {
    background-color: var(--highlight-color);
    color: var(--white);
}

/* Scroll to Top Button */
.scroll-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--highlight-color), var(--accent-color));
    color: white;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    z-index: 1000;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.scroll-to-top:hover {
    transform: scale(1.1);
}

.scroll-to-top.visible {
    opacity: 1;
    visibility: visible;
}