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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB",
        "Microsoft YaHei", sans-serif;
    background: #f8f9fa;
    color: #333;
    line-height: 1.6;
}

.header {
    background: #6c757d;
    padding: 12px 0;
    text-align: center;
}

.logo {
    width: 32px;
    height: 32px;
    background: #fff;
    border-radius: 6px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    color: #6c757d;
    font-size: 16px;
}

.main-content {
    background: linear-gradient(180deg, #f8f9fa 0%, #e9ecef 100%);
    min-height: 100vh;
}

.hero-section {
    text-align: center;
    padding: 60px 20px 40px;
    max-width: 800px;
    margin: 0 auto;
}

.hero-subtitle {
    color: #6c757d;
    font-size: 14px;
    margin-bottom: 25px;
    font-weight: 400;
}

.hero-title {
    font-size: 42px;
    font-weight: 300;
    color: #495057;
    margin-bottom: 35px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 15px;
    flex-wrap: wrap;
}

.hero-emoji {
    font-size: 36px;
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.1));
}

.download-button {
    background: linear-gradient(135deg, #fd7e14 0%, #e85d04 100%);
    color: white;
    padding: 12px 35px;
    border: none;
    border-radius: 20px;
    font-size: 15px;
    font-weight: 500;
    cursor: pointer;
    box-shadow: 0 4px 12px rgba(253, 126, 20, 0.3);
    transition: all 0.2s ease;
    margin-bottom: 25px;
}

.download-button:hover {
    transform: translateY(-1px);
    box-shadow: 0 6px 16px rgba(253, 126, 20, 0.4);
}

.version-info {
    color: #adb5bd;
    font-size: 12px;
    margin-bottom: 50px;
}

.keyboard-container {
    display: flex;
    justify-content: center;
    margin: 40px 0 60px;
    position: relative;
}

.keyboard {
    width: 520px;
    height: 160px;
    background: linear-gradient(145deg, #ffffff 0%, #f8f9fa 100%);
    border-radius: 12px;
    box-shadow:
        0 8px 32px rgba(0, 0, 0, 0.08),
        0 2px 8px rgba(0, 0, 0, 0.04);
    position: relative;
    transform: perspective(800px) rotateX(15deg);
}

.keyboard-keys {
    position: absolute;
    top: 15px;
    left: 15px;
    right: 15px;
    bottom: 15px;
    display: grid;
    grid-template-rows: repeat(5, 1fr);
    gap: 3px;
    padding: 8px;
}

.key-row {
    display: flex;
    gap: 3px;
}

.key {
    flex: 1;
    background: linear-gradient(145deg, #f8f9fa 0%, #e9ecef 100%);
    border-radius: 3px;
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
    min-height: 20px;
}

.key.space {
    flex: 6;
}

.features-section {
    max-width: 1000px;
    margin: 0 auto;
    padding: 0 20px;
}

.feature-cards {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
    margin-bottom: 40px;
}

.feature-card {
    background: white;
    border-radius: 16px;
    padding: 30px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
    border: 1px solid rgba(0, 0, 0, 0.04);
}

.emoji-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 12px;
    margin-bottom: 20px;
}

.emoji-item {
    aspect-ratio: 1;
    background: #f8f9fa;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    border: 1px solid #e9ecef;
}

.feature-title {
    font-size: 18px;
    font-weight: 500;
    color: #495057;
    margin-bottom: 8px;
}

.feature-description {
    font-size: 13px;
    color: #6c757d;
    line-height: 1.5;
}

.stats-card {
    text-align: left;
}

.stats-title {
    font-size: 18px;
    font-weight: 500;
    color: #495057;
    margin-bottom: 8px;
}

.stats-subtitle {
    font-size: 13px;
    color: #6c757d;
    margin-bottom: 25px;
    line-height: 1.5;
}

.stats-visual {
    background: #f8f9fa;
    height: 80px;
    border-radius: 8px;
    position: relative;
    overflow: hidden;
    border: 1px solid #e9ecef;
}

.stats-bar {
    position: absolute;
    top: 0;
    left: 0;
    height: 100%;
    width: 95%;
    background: linear-gradient(90deg, #fd7e14 0%, #e85d04 100%);
    border-radius: 8px 0 0 8px;
}

.single-feature-cards {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
    margin-bottom: 50px;
}

.single-feature-card {
    background: white;
    border-radius: 16px;
    padding: 30px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
    border: 1px solid rgba(0, 0, 0, 0.04);
    text-align: center;
}

.feature-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #fd7e14 0%, #e85d04 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    font-size: 24px;
    color: white;
    box-shadow: 0 4px 12px rgba(253, 126, 20, 0.3);
}

.macbook-section {
    text-align: center;
    margin: 50px 0;
}

.macbook {
    width: 400px;
    height: 250px;
    margin: 0 auto 20px;
    position: relative;
    transform: perspective(1000px) rotateX(25deg);
}

.macbook-base {
    width: 100%;
    height: 200px;
    background: linear-gradient(145deg, #e9ecef 0%, #f8f9fa 100%);
    border-radius: 12px;
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.15);
    position: relative;
}

.macbook-screen {
    position: absolute;
    top: 12px;
    left: 12px;
    right: 12px;
    bottom: 40px;
    background: #000;
    border-radius: 8px;
    overflow: hidden;
}

.macbook-trackpad {
    position: absolute;
    bottom: 12px;
    left: 50%;
    transform: translateX(-50%);
    width: 120px;
    height: 20px;
    background: #dee2e6;
    border-radius: 10px;
}

.hand-pointer {
    position: absolute;
    bottom: -30px;
    right: 80px;
    font-size: 30px;
    transform: rotate(-15deg);
}

.macbook-title {
    color: #6c757d;
    font-size: 14px;
    margin-top: 10px;
}

.bottom-features {
    max-width: 1000px;
    margin: 0 auto;
    padding: 40px 20px;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 25px;
    margin-bottom: 30px;
}

.bottom-feature {
    text-align: center;
    padding: 20px 10px;
}

.bottom-feature-icon {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, #6f42c1 0%, #495057 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 12px;
    font-size: 20px;
    color: white;
    box-shadow: 0 3px 10px rgba(111, 66, 193, 0.3);
}

.bottom-feature-title {
    font-size: 12px;
    color: #495057;
    font-weight: 500;
}

.footer {
    background: #495057;
    color: #adb5bd;
    text-align: center;
    padding: 30px 20px;
    font-size: 12px;
}

@media (max-width: 768px) {
    .hero-title {
        font-size: 28px;
        flex-direction: column;
        gap: 10px;
    }

    .keyboard {
        width: 90%;
        max-width: 400px;
        height: 120px;
    }

    .feature-cards,
    .single-feature-cards {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .features-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 20px;
    }

    .macbook {
        width: 90%;
        max-width: 300px;
        height: 180px;
    }
}

@media (max-width: 480px) {
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}