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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', sans-serif;
    background: #15161a;
    color: #fff;
}

/* Header */
header {
    background: #1c1d21;
    padding: 1rem 0;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 50;
}

.header-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    height: 64px;
    width: 250px;
    object-fit: cover;
}

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

nav a {
    color: #9ca3af;
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: color 0.3s;
}

nav a:hover {
    color: #fff;
}

/* Hero */
.hero {
    text-align: center;
    padding: 8rem 1rem 4rem;
}

.hero img {
    height: 192px;
    width: 800px;
    max-width: 100%;
    object-fit: cover;
}

/* Category Section */
.category {
    padding: 3rem 0;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
}

.category-title {
    text-align: center;
    font-size: 2rem;
    margin-bottom: 1rem;
}

.category-desc {
    text-align: center;
    color: #9ca3af;
    max-width: 768px;
    margin: 0 auto 3rem;
}

.bonus-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem 1.5rem;
    row-gap: 1.5rem;
    column-gap: 1.5rem;
}

.bonus-grid.center-single {
    display: flex;
    justify-content: center;
}

.bonus-grid.center-single .bonus-card {
    max-width: 350px;
    width: 100%;
}

/* Bonus Card */
.bonus-card {
    background: #1c1d21;
    border-radius: 0.5rem;
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.bonus-card img {
    height: 48px;
    object-fit: contain;
    margin: 0 auto;
}

.bonus-main {
    background: #15161a;
    border-radius: 0.25rem;
    padding: 0.75rem;
    text-align: center;
    font-weight: bold;
    font-size: 0.9rem;
}

.bonus-code {
    text-align: center;
}

.bonus-code-label {
    font-size: 0.75rem;
    color: #9ca3af;
    margin-bottom: 0.25rem;
}

.bonus-code-value {
    font-size: 0.875rem;
}

.claim-btn {
    background: #fff;
    color: #000;
    border: none;
    padding: 0.5rem 1rem;
    border-radius: 0.25rem;
    font-weight: 500;
    cursor: pointer;
    text-decoration: none;
    display: block;
    text-align: center;
    transition: background 0.3s;
}

.claim-btn:hover {
    background: #e5e5e5;
}

.how-to-btn {
    background: transparent;
    color: #9ca3af;
    border: none;
    font-size: 0.75rem;
    cursor: pointer;
    text-align: center;
    transition: color 0.3s;
}

.how-to-btn:hover {
    color: #fff;
}

/* SEO Content */
.seo-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 3rem 1rem;
    color: #d1d5db;
}

.seo-content h1 {
    color: #fff;
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
}

.seo-content h2 {
    color: #fff;
    font-size: 1.5rem;
    margin: 2rem 0 1rem;
}

.seo-content h3 {
    color: #fff;
    font-size: 1.125rem;
    margin: 1.5rem 0 0.5rem;
}

.seo-content p {
    line-height: 1.7;
    margin-bottom: 1rem;
}

.seo-content ul, .seo-content ol {
    margin-left: 2rem;
    margin-bottom: 1rem;
}

.seo-content li {
    margin-bottom: 0.5rem;
}

.seo-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1rem;
    margin: 1rem 0;
}

.seo-box {
    background: #1c1d21;
    padding: 1rem;
    border-radius: 0.5rem;
}

/* Footer */
footer {
    background: #1c1d21;
    padding: 1.5rem 0;
    margin-top: 3rem;
}

footer p {
    text-align: center;
    color: #9ca3af;
    font-size: 0.875rem;
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0,0,0,0.5);
    z-index: 100;
    align-items: center;
    justify-content: center;
}

.modal.active {
    display: flex;
}

.modal-content {
    background: #1c1d21;
    border-radius: 0.5rem;
    padding: 2rem;
    max-width: 500px;
    width: 90%;
    position: relative;
}

.modal-close {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: transparent;
    border: none;
    color: #9ca3af;
    font-size: 1.5rem;
    cursor: pointer;
}

.modal-logo {
    text-align: center;
    margin-bottom: 1.5rem;
}

.modal-logo img {
    height: 32px;
}

.modal h2 {
    text-align: center;
    margin-bottom: 1.5rem;
}

.instruction-step {
    background: #15161a;
    padding: 1rem;
    border-radius: 0.25rem;
    margin-bottom: 1rem;
    display: flex;
    gap: 1rem;
}

.step-number {
    background: #fff;
    color: #000;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    font-size: 0.875rem;
    font-weight: bold;
}

.step-text h4 {
    margin-bottom: 0.25rem;
}

.step-text p {
    color: #9ca3af;
    font-size: 0.875rem;
}

@media (max-width: 768px) {
    header {
        position: relative;
    }

    .hero {
        padding-top: 4rem;
    }

    nav {
        gap: 1rem;
        font-size: 0.875rem;
    }

    nav span {
        display: none;
    }
}