:root {
    /* White Weight System */
    --bg-base: #ffffff;
    --bg-secondary: #f8fafc;
    --card-border: #e2e8f0;

    --text-heavy: #0f172a;
    --text-medium: #475569;
    --text-light: #94a3b8;

    --accent-main: #0ea5e9;
    --accent-soft: rgba(14, 165, 233, 0.08);
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    background-color: var(--bg-base);
    background-image:
        radial-gradient(circle at top right, var(--accent-soft), transparent 35%),
        radial-gradient(circle at bottom left, var(--accent-soft), transparent 35%);
    color: var(--text-medium);
    /* svh ensures the layout doesn't jump when mobile bars appear/disappear */
    min-height: 100svh;
    display: flex;
    justify-content: center;
    align-items: center;
    overflow-x: hidden;
    padding: 1rem;
}

main {
    width: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 2rem 0;
}

.container {
    max-width: 720px;
    width: 100%;
    text-align: center;
    padding: 1.5rem;
    z-index: 10;
}

.icon-box {
    margin-bottom: clamp(1.25rem, 4vh, 2rem);
    display: inline-flex;
    padding: clamp(0.85rem, 3vw, 1.25rem);
    background: var(--bg-base);
    border-radius: 50%;
    border: 1px solid var(--card-border);
    box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.03);
    animation: float 6s ease-in-out infinite;
}

@keyframes float {

    0%,
    100% {
        transform: translateY(0);
    }

    50% {
        transform: translateY(-10px);
    }
}

.brand-name {
    font-size: clamp(0.8rem, 2vw, 0.95rem);
    font-weight: 700;
    color: var(--accent-main);
    text-transform: lowercase;
    letter-spacing: 0.05em;
    margin-bottom: 0.5rem;
}

h1 {
    font-size: clamp(1.75rem, 8vw, 3.25rem);
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 1rem;
    color: var(--text-heavy);
    letter-spacing: -0.04em;
}

.description {
    color: var(--text-medium);
    font-size: clamp(0.95rem, 2.5vw, 1.1rem);
    font-weight: 400;
    line-height: 1.5;
    margin-bottom: 2.5rem;
    max-width: 580px;
    margin-left: auto;
    margin-right: auto;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 1rem;
    margin-bottom: 2.5rem;
    text-align: left;
}

.feature-item {
    background: var(--bg-secondary);
    padding: 1.25rem;
    border-radius: 12px;
    border: 1px solid var(--card-border);
    transition: all 0.3s ease;
    height: 100%;
}

.feature-item:hover {
    transform: translateY(-3px);
    border-color: var(--accent-main);
    box-shadow: 0 10px 20px -10px rgba(14, 165, 233, 0.15);
}

.feature-item h3 {
    font-size: 0.95rem;
    color: var(--text-heavy);
    margin-bottom: 0.35rem;
    font-weight: 700;
}

.feature-item p {
    font-size: 0.85rem;
    line-height: 1.4;
    color: var(--text-medium);
    margin: 0;
    padding: 0;
}

.progress-wrapper {
    width: 100%;
    max-width: 360px;
    margin: 0 auto;
}

.progress-container {
    width: 100%;
    height: 6px;
    background: var(--bg-secondary);
    border-radius: 100px;
    border: 1px solid var(--card-border);
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    width: 0%;
    background: linear-gradient(90deg, #0ea5e9, #6366f1);
    border-radius: 100px;
    transition: width 2.5s cubic-bezier(0.22, 1, 0.36, 1);
}

.footer-note {
    margin-top: clamp(2rem, 6vh, 4rem);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: lowercase;
    letter-spacing: 0.12em;
    color: var(--text-light);
}

/* Responsive adjustments for mid-size tablets and small mobile */
@media (max-width: 580px) {
    .feature-grid {
        grid-template-columns: 1fr;
    }

    .container {
        padding: 1rem;
    }

    h1 {
        margin-bottom: 0.75rem;
    }
}

/* Landscape orientation fix for small phones */
@media (max-height: 500px) {
    body {
        align-items: flex-start;
        overflow-y: auto;
    }

    main {
        padding: 1rem 0;
        align-items: flex-start;
    }

    .icon-box {
        display: none;
    }

    /* Hide icon to save vertical space */
}