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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Helvetica', 'Arial', sans-serif;
    background: #f5f5f5;
    color: #000;
    line-height: 1.5;
    padding-top: 66px;
}

/* HEADER */
.header {
    background: #fff;
    padding: 10px 12px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 1px 3px rgba(0,0,0,0.05);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
}

.logo-container {
    display: flex;
    align-items: center;
    gap: 8px;
}

.logo-icon {
    width: 38px;
    height: 38px;
    background: #0066ff;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    flex-shrink: 0;
}

.logo-icon::before {
    content: '';
    width: 20px;
    height: 24px;
    background: white;
    border-radius: 2px;
    position: relative;
}

.logo-icon::after {
    content: '';
    position: absolute;
    width: 12px;
    height: 2px;
    background: #0066ff;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    box-shadow: 
        0 -4px 0 #0066ff,
        0 4px 0 #0066ff;
}

.logo-text {
    font-size: 17px;
    font-weight: 600;
    color: #000;
}

.header-right {
    display: flex;
    align-items: center;
    gap: 6px;
}

.btn-login {
    background: white;
    color: #000;
    padding: 8px 12px;
    border-radius: 10px;
    text-decoration: none;
    font-weight: 600;
    font-size: 13px;
    border: 1px solid #e0e0e0;
    transition: all 0.2s;
    white-space: nowrap;
}

.btn-login:hover {
    background: #f5f5f5;
    border-color: #d0d0d0;
}

.btn-try {
    background: #0066ff;
    color: white;
    padding: 8px 12px;
    border-radius: 12px;
    text-decoration: none;
    font-weight: 600;
    font-size: 13px;
    white-space: nowrap;
    transition: background 0.2s;
}

.btn-try:hover {
    background: #0052cc;
}

/* MAIN CONTENT */
.main-content {
    padding: 32px 20px;
    max-width: 100%;
}

.hero-title {
    font-size: 48px;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 24px;
    text-align: center;
}

.hero-title .blue {
    color: #0066ff;
}

.hero-description {
    font-size: 16px;
    color: #4a4a4a;
    line-height: 1.6;
    margin-bottom: 32px;
    text-align: center;
    max-width: 650px;
    margin-left: auto;
    margin-right: auto;
}

/* BUTTONS */
.cta-buttons {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-bottom: 40px;
}

.btn-primary {
    background: #0066ff;
    color: white;
    padding: 18px 24px;
    border-radius: 16px;
    text-decoration: none;
    font-weight: 600;
    font-size: 16px;
    text-align: center;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    transition: background 0.2s;
}

.btn-primary:hover {
    background: #0052cc;
}

.btn-secondary {
    background: white;
    color: #000;
    padding: 18px 24px;
    border-radius: 16px;
    text-decoration: none;
    font-weight: 600;
    font-size: 16px;
    text-align: center;
    border: 1px solid #e0e0e0;
    transition: all 0.2s;
}

.btn-secondary:hover {
    background: #f5f5f5;
    border-color: #d0d0d0;
}

/* FEATURES SECTION */
.features {
    background: white;
    border-radius: 20px;
    padding: 24px;
    margin-top: 24px;
}

.features-title {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 16px;
}

.feature-item {
    display: flex;
    align-items: start;
    gap: 12px;
    margin-bottom: 16px;
    padding-bottom: 16px;
    border-bottom: 1px solid #f0f0f0;
}

.feature-item:last-child {
    border-bottom: none;
    margin-bottom: 0;
    padding-bottom: 0;
}

.feature-icon {
    width: 40px;
    height: 40px;
    background: #e6f0ff;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    flex-shrink: 0;
}

.feature-content h3 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 4px;
}

.feature-content p {
    font-size: 14px;
    color: #666;
    line-height: 1.5;
}

/* ARROW ICON */
.arrow {
    display: inline-block;
    font-size: 18px;
}

/* RESPONSIVE DESIGN */
@media (min-width: 768px) {
    .header {
        padding: 16px 40px;
    }

    .logo-icon {
        width: 42px;
        height: 42px;
    }

    .logo-text {
        font-size: 20px;
    }

    .header-right {
        gap: 10px;
    }

    .btn-login,
    .btn-try {
        padding: 10px 18px;
        font-size: 14px;
    }

    .main-content {
        padding: 60px 40px;
        max-width: 1200px;
        margin: 0 auto;
    }

    .hero-title {
        font-size: 56px;
        text-align: center;
    }

    .hero-description {
        font-size: 18px;
        max-width: 700px;
        margin-left: auto;
        margin-right: auto;
        text-align: center;
        margin-bottom: 40px;
    }

    .cta-buttons {
        flex-direction: row;
        justify-content: center;
        gap: 16px;
    }

    .btn-primary,
    .btn-secondary {
        padding: 18px 32px;
        min-width: 220px;
    }

    .features {
        padding: 32px;
        margin-top: 60px;
    }

    .features-grid {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: 24px;
    }

    .feature-item {
        border-bottom: none;
        padding-bottom: 0;
    }
}

@media (min-width: 1024px) {
    .hero-title {
        font-size: 64px;
    }

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