* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', -apple-system, sans-serif;
}

body {
    background-color: #f6f8fa;
    color: #24292f;
    line-height: 1.6;
}

.container {
    max-width: 1140px;
    margin: 0 auto;
    padding: 0 20px;
}

nav {
    background-color: #ffffff;
    border-bottom: 1px solid #d0d7de;
    position: sticky;
    top: 0;
    z-index: 1000;
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1140px;
    margin: 0 auto;
    padding: 16px 20px;
}

.logo {
    font-size: 20px;
    font-weight: 700;
    color: #1f2328;
}

.nav-links {
    list-style: none;
    display: flex;
    gap: 24px;
}

.nav-links a {
    text-decoration: none;
    color: #57606a;
    font-weight: 500;
    font-size: 14px;
}

.nav-links a:hover,
.nav-links a.active {
    color: #0969da;
}

section {
    padding: 60px 0;
    border-bottom: 1px solid #d8dee4;
}

section:last-of-type {
    border-bottom: none;
}

.section-header {
    text-align: center;
    margin-bottom: 40px;
}

.section-header h1 {
    font-size: 28px;
    font-weight: 700;
    color: #1f2328;
    margin-bottom: 8px;
}

.section-header p {
    color: #57606a;
    font-size: 15px;
}

.grid-home {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 24px;
}

.card {
    background-color: #ffffff;
    border: 1px solid #d0d7de;
    border-radius: 8px;
    overflow: hidden;
}

.card-image-box {
    width: 100%;
    height: 160px;
    background-color: #eaeef2;
    display: flex;
    align-items: center;
    justify-content: center;
    border-bottom: 1px solid #d0d7de;
}

.image-placeholder {
    color: #57606a;
    font-size: 13px;
}

.card-content {
    padding: 16px;
}

.card-content h3 {
    font-size: 16px;
    color: #1f2328;
    margin-bottom: 6px;
}

.card-content p {
    font-size: 14px;
    color: #57606a;
}

.design-wrapper {
    max-width: 1040px;
    margin: 0 auto;
    display: flex;
    gap: 2em;
    flex-wrap: wrap;
    justify-content: center;
}

.design-card {
    background-color: #ffffff;
    border: 1px solid #d0d7de;
    border-radius: 8px;
    padding: 20px;
    flex: 1;
    min-width: 280px;
    max-width: 480px;
}

.ppt-frame-container {
    position: relative;
    width: 100%;
    height: 0;
    padding-bottom: 125%; /* TRICK CSS: Nilai 125% ini yang bikin rasionya pas jadi 4:5 */
    background-color: #f6f8fa;
    border: 2px dashed #959da5;
    border-radius: 6px;
    overflow: hidden;
}

.ppt-notice {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
    width: 90%;
}

.ppt-notice strong {
    display: block;
    font-size: 14px;
    color: #57606a;
    margin-bottom: 4px;
}

.ppt-notice p {
    font-size: 13px;
    color: #8c959f;
}

.ppt-frame-container iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border: none;
}

.product-showcase {
    background-color: #ffffff;
    border: 1px solid #d0d7de;
    border-radius: 8px;
    padding: 30px;
    max-width: 700px;
    margin: 0 auto;
    text-align: center;
}

.product-showcase h2 {
    font-size: 24px;
    color: #1f2328;
    margin-bottom: 16px;
}

.product-image-container {
    width: 100%;
    max-width: 450px;
    margin: 20px auto;
    border-radius: 8px;
    overflow: hidden;
    border: 1px solid #d0d7de;
    background-color: #eaeef2;
}

.product-img-fallback {
    width: 100%;
    height: auto;
    display: block;
}

.game-info-box {
    text-align: left;
    max-width: 600px;
    margin: 20px auto;
}

.game-info-box h3 {
    font-size: 16px;
    color: #1f2328;
    margin-bottom: 6px;
    margin-top: 16px;
}

.product-desc {
    font-size: 14px;
    color: #24292f;
}

.game-instructions {
    padding-left: 20px;
    color: #57606a;
    font-size: 14px;
}

.game-instructions li {
    margin-bottom: 6px;
}

.btn-action {
    display: inline-block;
    background-color: #1f2328;
    color: #ffffff;
    text-decoration: none;
    padding: 10px 24px;
    border-radius: 6px;
    font-size: 14px;
    font-weight: 600;
    margin-top: 10px;
}

.btn-action:hover {
    background-color: #0969da;
}

footer {
    text-align: center;
    padding: 30px 20px;
    color: #8c959f;
    font-size: 13px;
    background-color: #ffffff;
    border-top: 1px solid #d8dee4;
    margin-top: 40px;
}