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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: #1a1a1a;
    background: #ffffff;
}

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

.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: #ffffff;
    border-bottom: 1px solid #e6e6e6;
    z-index: 1000;
    transition: all 0.3s ease;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}

.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 0;
    height: 64px;
}

.logo {
    display: flex;
    align-items: center;
    font-size: 24px;
    font-weight: 700;
    color: #ff6d00;
    text-decoration: none;
}

.logo-icon {
    width: 32px;
    height: 32px;
    background: linear-gradient(135deg, #ff6d00, #ff8f00);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 12px;
    color: white;
    font-size: 16px;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 32px;
}

.nav-links a {
    text-decoration: none;
    color: #1a1a1a;
    font-weight: 500;
    font-size: 16px;
    transition: color 0.2s ease;
}

.nav-links a:hover {
    color: #ff6d00;
}

.btn-primary {
    background: #ff6d00;
    color: white !important;
    padding: 12px 24px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    font-size: 16px;
    transition: all 0.2s ease;
    border: none;
    cursor: pointer;
}

.btn-primary:hover {
    background: #ff8f00;
    transform: translateY(-1px);
}

.hero {
    padding: 120px 0 80px;
    background: linear-gradient(135deg, #1976d2 0%, #1565c0 100%);
    color: white;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('https://images.pexels.com/photos/2026324/pexels-photo-2026324.jpeg') center/cover;
    opacity: 0.1;
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.hero-title {
    font-size: clamp(32px, 5vw, 48px);
    font-weight: 700;
    margin-bottom: 16px;
    line-height: 1.2;
}

.hero-subtitle {
    font-size: 20px;
    margin-bottom: 48px;
    opacity: 0.9;
    font-weight: 400;
}

.search-form {
    background: white;
    border-radius: 16px;
    padding: 32px;
    margin: 48px auto 0;
    max-width: 900px;
    box-shadow: 0 16px 64px rgba(0, 0, 0, 0.15);
    color: #1a1a1a;
}

.search-row {
    display: grid;
    grid-template-columns: 1fr auto 1fr 200px;
    gap: 16px;
    align-items: end;
    margin-bottom: 24px;
}

.search-field {
    position: relative;
}

.search-field label {
    display: block;
    font-size: 14px;
    font-weight: 500;
    color: #666;
    margin-bottom: 8px;
}

.search-field input {
    width: 100%;
    padding: 16px;
    border: 2px solid #e6e6e6;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 500;
    transition: border-color 0.2s ease;
    background: #fafafa;
}

.search-field input:focus {
    outline: none;
    border-color: #ff6d00;
    background: white;
}

.swap-btn {
    width: 48px;
    height: 48px;
    background: #f5f5f5;
    border: 2px solid #e6e6e6;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.2s ease;
    color: #666;
}

.swap-btn:hover {
    background: #ff6d00;
    border-color: #ff6d00;
    color: white;
    transform: rotate(180deg);
}

.search-btn {
    background: #4caf50;
    color: white;
    border: none;
    padding: 16px 32px;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    width: 100%;
}

.search-btn:hover {
    background: #45a049;
    transform: translateY(-1px);
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: 64px;
    margin-top: 48px;
}

.stat {
    text-align: center;
}

.stat-number {
    display: block;
    font-size: 32px;
    font-weight: 700;
    color: #ffd54f;
    margin-bottom: 4px;
}

.stat-label {
    font-size: 14px;
    opacity: 0.8;
}

.features {
    padding: 80px 0;
    background: #fafafa;
}

.section-title {
    text-align: center;
    font-size: 32px;
    font-weight: 700;
    color: #1a1a1a;
    margin-bottom: 16px;
}

.section-subtitle {
    text-align: center;
    font-size: 18px;
    color: #666;
    margin-bottom: 64px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 32px;
}

.feature-card {
    background: white;
    padding: 32px 24px;
    border-radius: 12px;
    text-align: center;
    transition: all 0.3s ease;
    border: 1px solid #e6e6e6;
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.1);
    border-color: #ff6d00;
}

.feature-icon {
    width: 64px;
    height: 64px;
    background: linear-gradient(135deg, #ff6d00, #ff8f00);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 24px;
    color: white;
    font-size: 24px;
}

.feature-card h3 {
    font-size: 20px;
    font-weight: 600;
    color: #1a1a1a;
    margin-bottom: 12px;
}

.feature-card p {
    color: #666;
    line-height: 1.6;
}

.cta-section {
    padding: 80px 0;
    background: linear-gradient(135deg, #1976d2 0%, #1565c0 100%);
    text-align: center;
    color: white;
}

.cta-title {
    font-size: 32px;
    font-weight: 700;
    margin-bottom: 16px;
}

.cta-subtitle {
    font-size: 18px;
    margin-bottom: 32px;
    opacity: 0.9;
}

.btn-cta {
    background: #ffd54f;
    color: #1a1a1a;
    padding: 16px 32px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    font-size: 18px;
    display: inline-flex;
    align-items: center;
    gap: 12px;
    transition: all 0.2s ease;
}

.btn-cta:hover {
    background: #ffcc02;
    transform: translateY(-2px);
}

.reviews {
    padding: 80px 0;
    background: white;
}

.reviews-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 32px;
}

.review-card {
    background: #fafafa;
    padding: 32px;
    border-radius: 12px;
    border-left: 4px solid #ff6d00;
    transition: all 0.3s ease;
}

.review-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
}

.review-rating {
    margin-bottom: 16px;
}

.review-rating i {
    color: #ffd54f;
    margin-right: 2px;
}

.review-text {
    font-size: 16px;
    line-height: 1.6;
    margin-bottom: 24px;
    color: #333;
    font-style: italic;
}

.review-author {
    display: flex;
    align-items: center;
    gap: 16px;
}

.author-avatar {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, #ff6d00, #ff8f00);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 600;
    font-size: 18px;
}

.author-name {
    font-weight: 600;
    color: #1a1a1a;
    margin-bottom: 2px;
}

.author-location {
    color: #666;
    font-size: 14px;
}

.footer {
    background: #1a1a1a;
    color: white;
    padding: 48px 0 24px;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 32px;
}

.footer-logo {
    display: flex;
    align-items: center;
    font-size: 24px;
    font-weight: 700;
    color: #ff6d00;
    text-decoration: none;
    margin-bottom: 8px;
}

.footer-logo .logo-icon {
    margin-right: 12px;
}

.footer-info p {
    color: #ccc;
    font-size: 14px;
}

.footer-links {
    display: flex;
    gap: 32px;
}

.footer-links a {
    color: #ccc;
    text-decoration: none;
    font-size: 14px;
    transition: color 0.2s ease;
}

.footer-links a:hover {
    color: #ff6d00;
}

.footer-bottom {
    border-top: 1px solid #333;
    padding-top: 24px;
    text-align: center;
    color: #999;
    font-size: 14px;
}

.footer-bottom a {
    color: #ff6d00;
    text-decoration: none;
}

.footer-bottom a:hover {
    text-decoration: underline;
}

.protection-alert {
    position: fixed;
    top: 20px;
    right: 20px;
    background: #f44336;
    color: white;
    padding: 16px 20px;
    border-radius: 8px;
    box-shadow: 0 8px 24px rgba(244, 67, 54, 0.3);
    z-index: 10000;
    animation: slideInRight 0.3s ease;
    font-weight: 500;
    font-size: 14px;
}

.protection-alert-content {
    display: flex;
    align-items: center;
    gap: 12px;
}

@keyframes slideInRight {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

.watermark-overlay {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) rotate(-45deg);
    font-size: 3rem;
    color: rgba(255, 109, 0, 0.03);
    font-weight: bold;
    pointer-events: none;
    z-index: 1000;
    user-select: none;
}

* {
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;
}

input, textarea {
    -webkit-user-select: text;
    -moz-user-select: text;
    -ms-user-select: text;
    user-select: text;
}

img {
    -webkit-user-drag: none;
    -khtml-user-drag: none;
    -moz-user-drag: none;
    -o-user-drag: none;
    user-drag: none;
    pointer-events: none;
}

::selection {
    background: transparent;
}

::-moz-selection {
    background: transparent;
}

@media (max-width: 768px) {
    .nav-links {
        gap: 16px;
    }
    
    .nav-links a:not(.btn-primary) {
        display: none;
    }
    
    .search-row {
        grid-template-columns: 1fr;
        gap: 16px;
    }
    
    .swap-btn {
        display: none;
    }
    
    .hero-stats {
        flex-direction: column;
        gap: 24px;
        align-items: center;
    }
    
    .hero-stats .stat {
        display: flex;
        align-items: center;
        gap: 16px;
    }
    
    .features-grid,
    .reviews-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        flex-direction: column;
        gap: 24px;
        text-align: center;
    }
    
    .footer-links {
        flex-wrap: wrap;
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .search-form {
        padding: 24px 16px;
        margin: 32px 16px 0;
    }
    
    .hero-title {
        font-size: 28px;
    }
    
    .section-title {
        font-size: 24px;
    }
    
    .cta-title {
        font-size: 24px;
    }
}