* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Arial, sans-serif;
    background: #ffffff;
    color: #1f2937;
    line-height: 1.8;
}

a {
    color: #2563eb;
    text-decoration: none;
}

.container {
    max-width: 1200px;
    margin: auto;
    padding: 0 24px;
}

/* Header */
header {
    position: sticky;
    top: 0;
    background: #ffffff;
    border-bottom: 1px solid #e5e7eb;
    z-index: 10;
}

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

.logo {
    font-size: 22px;
    font-weight: 700;
}

nav a {
    margin-left: 28px;
    font-weight: 500;
    color: #374151;
}

/* Hero */
.hero {
    padding: 90px 0;
    display: grid;
    grid-template-columns: 1.1fr 1fr;
    gap: 60px;
    align-items: center;
}

.hero h1 {
    font-size: 44px;
    margin-bottom: 18px;
}

.hero p {
    font-size: 18px;
    color: #4b5563;
}

.primary-btn {
    display: inline-block;
    margin-top: 28px;
    padding: 14px 28px;
    border-radius: 8px;
    background: #111827;
    color: #ffffff;
    font-weight: 600;
}

/* Sections */
section {
    padding: 90px 0;
}

section.alt {
    background: #f9fafb;
}

section h2 {
    font-size: 32px;
    margin-bottom: 30px;
}

.subtitle {
    color: #6b7280;
    max-width: 700px;
    margin-bottom: 50px;
}

/* Grid */
.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 32px;
}

.card {
    border: 1px solid #e5e7eb;
    border-radius: 16px;
    padding: 32px;
    background: #ffffff;
}

/* Tabs */
.tabs {
    display: flex;
    gap: 20px;
    margin-bottom: 30px;
}

.tab {
    cursor: pointer;
    padding: 10px 18px;
    border-radius: 20px;
    border: 1px solid #e5e7eb;
    font-weight: 500;
}

.tab.active {
    background: #111827;
    color: #ffffff;
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
}

/* Screenshots */
.screenshots img {
    width: 100%;
    border-radius: 16px;
    border: 1px solid #e5e7eb;
}

/* Reviews */
.review {
    font-style: italic;
    color: #374151;
}

.review strong {
    display: block;
    margin-top: 14px;
    font-style: normal;
}

/* Footer */
footer {
    background: #f9fafb;
    border-top: 1px solid #e5e7eb;
    padding: 50px 0;
    font-size: 14px;
    color: #6b7280;
}