.ielts-learn {
    --ielts-learn-text: #252820;
    --ielts-learn-muted: #62685d;
    --ielts-learn-border: #dce1d6;
    --ielts-learn-accent: #425d45;
    --ielts-learn-panel: #eeeee5;
    max-width: 1120px;
    margin: 0 auto;
    padding: 3.5rem 2rem 5rem;
    color: var(--ielts-learn-text);
    font-size: 1rem;
    line-height: 1.85;
    overflow-wrap: anywhere;
}

html.dark-mode .ielts-learn {
    --ielts-learn-text: #e8e6e3;
    --ielts-learn-muted: #b8bdb3;
    --ielts-learn-border: #3a4137;
    --ielts-learn-accent: #a4cba2;
    --ielts-learn-panel: #242a22;
}

.ielts-learn a {
    color: var(--ielts-learn-accent);
    text-decoration: underline;
    text-underline-offset: 3px;
}

.ielts-learn a:focus-visible,
.ielts-learn-table-wrap:focus-visible {
    outline: 2px solid var(--ielts-learn-accent);
    outline-offset: 4px;
}

.ielts-learn-header {
    max-width: 820px;
    padding-bottom: 2.5rem;
}

.ielts-learn-eyebrow,
.ielts-learn-contents > p {
    color: var(--ielts-learn-muted);
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

.ielts-learn h1 {
    margin: 0.75rem 0 1.5rem;
    font: 400 clamp(2.5rem, 4.5vw, 3.7rem)/1.08 'Instrument Serif', Georgia, serif;
    letter-spacing: -0.02em;
}

.ielts-learn-intro {
    max-width: 720px;
    color: var(--ielts-learn-muted);
    font-size: 1.05rem;
}

.ielts-learn-byline {
    display: flex;
    align-items: center;
    gap: 0.8rem;
    margin-top: 1.5rem;
    font-size: 0.85rem;
    line-height: 1.65;
}

.ielts-learn-byline img {
    flex-shrink: 0;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    object-fit: cover;
}

.ielts-learn-byline span {
    display: block;
    color: var(--ielts-learn-muted);
    font-size: 0.75rem;
}

.ielts-learn-layout {
    display: grid;
    grid-template-columns: 210px minmax(0, 1fr);
    gap: 3.5rem;
    border-top: 1px solid var(--ielts-learn-border);
    padding-top: 2.25rem;
}

.ielts-learn-contents {
    position: sticky;
    top: 90px;
    align-self: start;
    font-size: 0.8rem;
    line-height: 1.6;
}

.ielts-learn-contents > p { margin-bottom: 0.75rem; }
.ielts-learn-contents a { display: block; padding: 0.4rem 0; text-decoration: none; }
.ielts-learn-contents a:hover { text-decoration: underline; }
.ielts-learn-article section { margin-bottom: 2.8rem; scroll-margin-top: 105px; }
.ielts-learn h2 { margin: 0 0 1rem; font-size: 1.5rem; line-height: 1.4; font-weight: 600; letter-spacing: -0.025em; }
.ielts-learn h3 { margin: 1.5rem 0 0.6rem; font-size: 1.05rem; line-height: 1.5; font-weight: 600; }
.ielts-learn-article p { margin: 0.8rem 0; }
.ielts-learn-article ol { list-style: decimal; padding-left: 1.4rem; }
.ielts-learn-article li { padding-left: 0.3rem; margin: 0.65rem 0; }
.ielts-learn .ielts-learn-source { color: var(--ielts-learn-muted); font-size: 0.8rem; line-height: 1.8; }
.ielts-learn-table-wrap { overflow-x: auto; margin: 1.3rem 0; }
.ielts-learn table { width: 100%; border-collapse: collapse; text-align: left; font-size: 0.84rem; line-height: 1.6; overflow-wrap: normal; }
.ielts-learn th[scope="row"], .ielts-learn thead th:first-child { white-space: nowrap; }
.ielts-learn caption { text-align: left; color: var(--ielts-learn-muted); font-size: 0.75rem; padding-bottom: 0.7rem; }
.ielts-learn th, .ielts-learn td { padding: 0.85rem 0.7rem; border-bottom: 1px solid var(--ielts-learn-border); vertical-align: top; }
.ielts-learn th { font-weight: 600; }
.ielts-learn thead { background: var(--ielts-learn-panel); }
.ielts-learn-example { margin: 1.2rem 0; padding: 1rem 1.3rem; background: var(--ielts-learn-panel); border-left: 3px solid var(--ielts-learn-accent); }
.ielts-learn-example h3 { margin-top: 0; }
.ielts-learn-next { border-top: 1px solid var(--ielts-learn-border); padding-top: 2rem; }

@media (max-width: 800px) {
    .ielts-learn { padding: 2.25rem 1.25rem 3rem; }
    .ielts-learn-layout { grid-template-columns: minmax(0, 1fr); gap: 2rem; padding-top: 1.5rem; }
    .ielts-learn-contents { position: static; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); column-gap: 1rem; border-bottom: 1px solid var(--ielts-learn-border); padding-bottom: 1.5rem; }
    .ielts-learn-contents > p { grid-column: 1 / -1; }
}

@media print {
    .ielts-learn { max-width: none; padding: 0; color: #000; }
    .ielts-learn-layout { display: block; }
    .ielts-learn-contents { display: none; }
}