@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;600;700&display=swap');

:root {
    --primary: #6c63ff;
    --primary-dark: #5651e9;
    --secondary: #4a4a4a;
    --light: #f8f9fa;
    --dark: #212529;
    --success: #28a745;
    --info: #17a2b8;
    --gradient-start: #6c63ff;
    --gradient-end: #4a43b7;
    --card-bg: #fff;
    --card-shadow: 0 8px 32px rgba(44, 62, 80, 0.08);
    --border-radius: 16px;
    --section-spacing: 6rem;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body {
    color: var(--dark);
    line-height: 1.7;
    background-color: #f4f6fb;
    font-size: 1.08rem;
}

.b {
    letter-spacing: .777px;
    font-weight: 800;
    color: var(--primary);
}

.container {
    width: 92%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 18px;
}

header {
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    color: white;
    padding: 1.5rem 0;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 4px 24px rgba(44, 62, 80, 0.08);
    border-bottom-left-radius: var(--border-radius);
    border-bottom-right-radius: var(--border-radius);
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 2rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    letter-spacing: 1px;
}

.logo-icon {
    margin-right: 12px;
    font-size: 2.2rem;
}

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

.nav-links li {
    margin-left: 2.2rem;
}

.nav-links a {
    color: white;
    text-decoration: none;
    font-weight: 500;
    letter-spacing: 0.5px;
    transition: opacity 0.3s, color 0.3s;
    padding: 0.3rem 0.7rem;
    border-radius: 8px;
}

.nav-links a:hover {
    opacity: 0.85;
    background: rgba(255, 255, 255, 0.08);
}

.hero {
    background: linear-gradient(120deg, var(--gradient-start) 60%, var(--gradient-end) 100%);
    color: white;
    padding: 6rem 0 4rem 0;
    text-align: center;
    border-radius: 0 0 var(--border-radius) var(--border-radius);
    box-shadow: 0 8px 32px rgba(44, 62, 80, 0.08);
}

.hero h1 {
    font-size: 3.2rem;
    margin-bottom: 1.2rem;
    font-weight: 700;
    letter-spacing: 1px;
}

.hero p {
    font-size: 1.25rem;
    max-width: 700px;
    margin: 0 auto 2.2rem;
    opacity: 0.95;
}

.btn {
    display: inline-block;
    background: linear-gradient(90deg, var(--gradient-start), var(--gradient-end));
    color: white;
    padding: 1rem 2.2rem;
    border-radius: 30px;
    text-decoration: none;
    font-weight: 600;
    font-size: 1.08rem;
    transition: all 0.3s;
    border: none;
    cursor: pointer;
    box-shadow: 0 4px 16px rgba(44, 62, 80, 0.08);
    margin: 0.5rem 0.5rem 0.5rem 0;
}

.btn:hover {
    transform: translateY(-2px) scale(1.04);
    box-shadow: 0 10px 24px rgba(44, 62, 80, 0.12);
    background: linear-gradient(90deg, var(--primary-dark), var(--gradient-end));
}

.btn-outline {
    background: transparent;
    border: 2px solid white;
    color: white;
    margin-left: 1rem;
}

section {
    padding: var(--section-spacing) 0;
}

section h2 {
    text-align: center;
    margin-bottom: 3.5rem;
    font-size: 2.7rem;
    color: var(--secondary);
    font-weight: 700;
    letter-spacing: 0.5px;
}

section h3 {
    margin-bottom: 1rem;
    color: var(--primary);
    font-weight: 600;
}

.features {
    background-color: var(--card-bg);
    border-radius: var(--border-radius);
    box-shadow: var(--card-shadow);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2.5rem;
}

.feature-card {
    background: var(--light);
    padding: 2.2rem;
    border-radius: var(--border-radius);
    text-align: center;
    box-shadow: var(--card-shadow);
    transition: transform 0.3s, box-shadow 0.3s;
    border: 1px solid #ececec;
}

.feature-card:hover {
    transform: translateY(-7px) scale(1.03);
    box-shadow: 0 12px 32px rgba(44, 62, 80, 0.12);
    border-color: var(--primary);
}

.feature-icon {
    font-size: 2.7rem;
    color: var(--primary);
    margin-bottom: 1.2rem;
}

.why {
    background-color: var(--light);
    border-radius: var(--border-radius);
    box-shadow: var(--card-shadow);
}

.why-content {
    max-width: 800px;
    margin: 0 auto;
    font-size: 1.15rem;
    opacity: 0.97;
}

.how-steps {
    display: flex;
    flex-direction: column;
    gap: 2.5rem;
    max-width: 900px;
    margin: 0 auto;
}

.step {
    display: flex;
    align-items: flex-start;
    gap: 2rem;
    background: var(--card-bg);
    border-radius: var(--border-radius);
    box-shadow: var(--card-shadow);
    padding: 2rem;
    transition: box-shadow 0.3s;
}

.step:hover {
    box-shadow: 0 16px 32px rgba(44, 62, 80, 0.14);
}

.step-number {
    background: var(--primary);
    color: white;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    font-weight: bold;
    font-size: 1.3rem;
    box-shadow: 0 4px 16px rgba(44, 62, 80, 0.08);
}

.step-content {
    flex: 1;
}

.usage {
    background-color: var(--light);
    border-radius: var(--border-radius);
    box-shadow: var(--card-shadow);
}

.code-block {
    background: #23272f;
    color: #f8f8f2;
    padding: 1.7rem;
    border-radius: 8px;
    overflow-x: auto;
    margin: 1.7rem 0;
    font-family: 'Fira Mono', 'Courier New', monospace;
    font-size: 1.05rem;
    box-shadow: 0 4px 16px rgba(44, 62, 80, 0.08);
}

.code-comment {
    color: #8ec07c;
}

.setup-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2.5rem;
}

.setup-card {
    background: var(--card-bg);
    padding: 2.2rem;
    border-radius: var(--border-radius);
    box-shadow: var(--card-shadow);
    border: 1px solid #ececec;
}

.faq-list {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    padding: 12px;
    margin-bottom: 2rem;
    border-bottom: 1px solid #eee;
    padding-bottom: 2rem;
    background: var(--card-bg);
    border-radius: var(--border-radius);
    box-shadow: var(--card-shadow);
}

.faq-question {
    font-weight: 600;
    margin-bottom: 0.7rem;
    color: var(--primary);
    font-size: 1.13rem;
}

footer {
    background: var(--dark);
    color: white;
    padding: 3.5rem 0;
    text-align: center;
    border-top-left-radius: var(--border-radius);
    border-top-right-radius: var(--border-radius);
    box-shadow: 0 -4px 24px rgba(44, 62, 80, 0.08);
}

.footer-links {
    display: flex;
    justify-content: center;
    list-style: none;
    margin: 2.5rem 0;
}

.footer-links li {
    margin: 0 1.2rem;
}

.footer-links a {
    color: white;
    text-decoration: none;
    font-weight: 500;
    letter-spacing: 0.5px;
    transition: color 0.3s;
}

.footer-links a:hover {
    color: var(--primary);
}

@media (max-width: 900px) {
    .container {
        width: 98%;
        padding: 0 8px;
    }

    .features-grid,
    .setup-cards {
        grid-template-columns: 1fr;
    }

    .how-steps {
        gap: 1.2rem;
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }

    .hero h1 {
        font-size: 2.2rem;
    }

    .step {
        flex-direction: column;
        padding: 1.2rem;
    }

    .btn {
        display: block;
        margin: 0.7rem auto;
        width: 90%;
    }

    .btn-outline {
        margin-left: 0;
    }

    section {
        padding: 3rem 0;
    }
}