:root {
    --max-width: 720px;
    --bg: #f0f2f5;
    --paper-bg: #ffffff;
    --paper-border: rgba(0, 0, 0, 0.06);
    --paper-shadow-1: 0 6px 18px rgba(16, 24, 40, 0.12);
    --paper-shadow-2: 0 2px 6px rgba(16, 24, 40, 0.06);
    --paper-padding: 32px;
    --text-color: #111827;
    --line-height: 1.6;
    --font-stack: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial;
}

.article-container {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    font-family: var(--font-stack);
    color: var(--text-color);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}


.paper-wrap {
    width: 100%;
    max-width: var(--max-width);
    background: var(--paper-bg);
    border: 1px solid var(--paper-border);
    box-shadow: var(--paper-shadow-1), var(--paper-shadow-2);
    padding: var(--paper-padding);
    box-sizing: border-box;
    border-radius: 0;
    min-height: 160px;
    position: relative;
    outline: 1px solid transparent;
    border-radius: 1rem;
    text-align: justify;
    margin: 1rem 0rem;
}


.paper-wrap h1,
.paper-wrap h2,
.paper-wrap h3,
.paper-wrap h4,
.paper-wrap h5,
.paper-wrap h6 {
    margin-top: 1.2em;
    margin-bottom: 0.4em;
    font-weight: 600;
    letter-spacing: -0.2px;
    line-height: 1.3;
}


.paper-wrap h1 {
    font-size: 24px;
}

.paper-wrap h2 {
    font-size: 20px;
}

.paper-wrap h3 {
    font-size: 18px;
}

.paper-wrap h4 {
    font-size: 16px;
}

.paper-wrap h5 {
    font-size: 15px;
    font-weight: 500;
}

.paper-wrap h6 {
    font-size: 14px;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}


.paper-wrap p {
    margin: 0 0 12px 0;
    line-height: var(--line-height);
    font-size: 15px;
}


@media (max-width:480px) {
    :root {
        --paper-padding: 20px;
    }

    .paper-wrap {
        max-width: 92vw;
    }
}


.paper-wrap:active {
    transition: transform 120ms ease-out;
    box-shadow: 0 14px 30px rgba(16, 24, 40, 0.16), 0 4px 10px rgba(16, 24, 40, 0.08);
}

.paper-wrap:focus {
    box-shadow: 0 14px 30px rgba(16, 24, 40, 0.16), 0 4px 10px rgba(16, 24, 40, 0.08)
}

.paper-wrap .note {
    position: absolute;
    top: 10px;
    right: 10px;
    font-size: 12px;
    opacity: 0.6;
    user-select: none;
}