.home-header {
    max-width: 42rem;
    padding: clamp(38px, 9vw, 84px) 0 28px;
}

.home-header h1,
.list-header h1,
.reading-header h1 {
    margin: 0;
    color: var(--ink);
    letter-spacing: -0.04em;
    line-height: 1.1;
}

.home-header h1 {
    max-width: 15ch;
    font-size: clamp(2rem, 5vw, 3.35rem);
}

.home-header > p:last-child {
    max-width: 38rem;
    margin: 14px 0 0;
    color: var(--ink-soft);
    font-size: 1.02rem;
}

.home-choice-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 14px;
}

.home-choice {
    display: flex;
    min-height: 218px;
    flex-direction: column;
    padding: 20px;
    border: 1px solid var(--line);
    border-radius: 12px;
    background: var(--panel);
    box-shadow: 0 8px 20px -18px var(--shadow);
    text-decoration: none;
    transition: transform 160ms ease, background 160ms ease, box-shadow 160ms ease;
}

.home-choice:hover {
    background: var(--panel-strong);
    box-shadow: 0 15px 28px -20px var(--shadow);
    transform: translateY(-3px);
}

.choice-number {
    color: var(--accent);
    font-family: ui-monospace, Consolas, monospace;
    font-size: 0.78rem;
    font-weight: 800;
}

.home-choice h2 {
    margin: auto 0 7px;
    font-size: clamp(1.28rem, 2.3vw, 1.65rem);
    letter-spacing: -0.03em;
    line-height: 1.15;
}

.home-choice p {
    margin: 0;
    color: var(--ink-soft);
    font-size: 0.9rem;
    line-height: 1.48;
}

.home-choice b {
    align-self: flex-end;
    margin-top: 12px;
    color: var(--accent);
    font-size: 1.2rem;
}

.list-header {
    margin: 0 0 20px;
}

.list-header h1 {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
}

.content-list {
    display: grid;
    overflow: hidden;
    border: 1px solid var(--line);
    border-radius: 12px;
    background: rgba(255, 246, 210, 0.2);
}

.content-item {
    display: grid;
    grid-template-columns: 42px minmax(0, 1fr) auto;
    gap: 12px;
    align-items: center;
    min-height: 92px;
    padding: 14px 18px;
    border-bottom: 1px solid var(--line);
    text-decoration: none;
    transition: background 150ms ease;
}

.content-item:last-child {
    border-bottom: 0;
}

.content-item:hover {
    background: rgba(255, 249, 222, 0.42);
}

.item-number {
    color: var(--accent);
    font-family: ui-monospace, Consolas, monospace;
    font-size: 0.78rem;
    font-weight: 800;
}

.item-copy h2 {
    margin: 0;
    font-size: 1.12rem;
    letter-spacing: -0.015em;
    line-height: 1.3;
}

.item-copy p,
.item-copy em {
    margin: 4px 0 0;
    color: var(--ink-soft);
    font-size: 0.9rem;
    font-style: normal;
    line-height: 1.45;
}

.item-arrow {
    color: var(--accent);
    font-size: 1.2rem;
}

.book-list .content-item {
    grid-template-columns: 58px minmax(0, 1fr) auto;
}

.book-cover {
    overflow: hidden;
    width: 46px;
    aspect-ratio: 2 / 3;
    border: 1px solid rgba(71, 36, 12, 0.42);
    border-radius: 3px;
    background: rgba(95, 51, 13, 0.15);
    box-shadow: 3px 4px 0 rgba(90, 43, 11, 0.13);
}

.book-cover img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.reading-page {
    overflow: hidden;
    border: 1px solid var(--line);
    border-radius: 12px;
    background: var(--panel);
}

.reading-header,
.video-section,
.reading-content {
    padding: clamp(20px, 4.5vw, 38px);
}

.reading-header {
    border-bottom: 1px solid var(--line);
}

.reading-header h1 {
    font-size: clamp(1.78rem, 4vw, 2.55rem);
}

.reading-subtitle {
    max-width: 48rem;
    margin: 11px 0 0;
    color: var(--ink-soft);
}

.video-section {
    border-bottom: 1px solid var(--line);
}

.video-section h2,
.reading-content h2 {
    margin: 0 0 13px;
    font-size: 1.25rem;
    letter-spacing: -0.015em;
}

.video-placeholder {
    display: grid;
    position: relative;
    overflow: hidden;
    min-height: 180px;
    aspect-ratio: 16 / 9;
    place-items: center;
    border: 1px dashed var(--line);
    border-radius: 8px;
    background: rgba(94, 48, 12, 0.1);
    color: var(--ink-soft);
    text-align: center;
}

.video-placeholder iframe {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    border: 0;
}

.video-placeholder span {
    max-width: 25ch;
    padding: 12px;
    font-size: 0.9rem;
}

.reading-content {
    max-width: 52rem;
    font-family: "Roboto", Arial, sans-serif;
    font-size: 1.05rem;
    line-height: 1.75;
}

.reading-content h3 {
    margin: 24px 0 7px;
    color: var(--accent);
    font-size: 1rem;
}

.reading-content p {
    margin: 0 0 15px;
}

.reading-content ol {
    margin: 0;
    padding-left: 1.25rem;
}

.reading-content li + li {
    margin-top: 7px;
}

@media (max-width: 700px) {
    .home-choice-grid {
        grid-template-columns: 1fr;
    }

    .home-choice {
        min-height: 150px;
    }

    .home-choice h2 {
        margin-top: 24px;
    }
}

@media (max-width: 560px) {
    .home-header {
        padding-top: 32px;
        padding-bottom: 20px;
    }

    .content-item,
    .book-list .content-item {
        grid-template-columns: 32px minmax(0, 1fr) 18px;
        gap: 8px;
        min-height: 82px;
        padding: 12px;
    }

    .book-list .content-item {
        grid-template-columns: 48px minmax(0, 1fr) 18px;
    }

    .item-copy p {
        display: none;
    }

    .item-copy em {
        display: block;
    }

    .book-cover {
        width: 39px;
    }
}

/* ==========================================================================
   READING & DETAIL PAGES
   ========================================================================== */

.reading-page {
    overflow: hidden;
    border: 1px solid var(--line);
    border-radius: 12px;
    background: var(--panel);
    box-shadow: 0 10px 28px -18px var(--shadow);
}

.reading-header,
.video-section,
.reading-content {
    padding: clamp(22px, 4.5vw, 40px);
}

.reading-header {
    border-bottom: 1px solid var(--line);
}

.reading-header h1 {
    font-size: clamp(1.78rem, 4vw, 2.55rem);
}

.reading-subtitle {
    max-width: 48rem;
    margin: 11px 0 0;
    color: var(--ink-soft);
}

.video-section {
    border-bottom: 1px solid var(--line);
}

.video-section h2,
.reading-content h2 {
    margin: 0 0 14px;
    font-size: 1.25rem;
    letter-spacing: -0.015em;
}

.video-placeholder {
    display: grid;
    position: relative;
    overflow: hidden;
    min-height: 200px;
    aspect-ratio: 16 / 9;
    place-items: center;
    border: 1px dashed var(--line);
    border-radius: 8px;
    background: rgba(94, 48, 12, 0.1);
    color: var(--ink-soft);
    text-align: center;
}

.video-placeholder iframe {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    border: 0;
}

/* ==========================================================================
   BOOK DETAIL HERO (Ảnh bìa bên trái | Thông tin bên phải)
   ========================================================================== */

.book-hero-section {
    display: grid;
    grid-template-columns: 160px minmax(0, 1fr);
    gap: clamp(20px, 4vw, 36px);
    padding: clamp(24px, 5vw, 40px);
    border-bottom: 1px solid var(--line);
    background: rgba(255, 246, 210, 0.3);
    align-items: start;
}

.book-hero-cover {
    width: 160px;
    aspect-ratio: 2 / 3;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 12px 28px -6px rgba(60, 30, 10, 0.35), 0 3px 8px -2px rgba(60, 30, 10, 0.2);
    border: 1px solid rgba(71, 36, 12, 0.3);
    background: rgba(95, 51, 13, 0.1);
    flex-shrink: 0;
}

.book-hero-cover img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.book-hero-info {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.book-genre-tag {
    display: inline-block;
    align-self: flex-start;
    padding: 3px 10px;
    border-radius: 4px;
    background: rgba(184, 80, 24, 0.12);
    color: var(--accent);
    font-family: ui-monospace, Consolas, monospace;
    font-size: 0.76rem;
    font-weight: 800;
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

.book-hero-info h1 {
    margin: 0;
    font-size: clamp(1.65rem, 3.8vw, 2.45rem);
    letter-spacing: -0.035em;
    line-height: 1.15;
    color: var(--ink);
}

.book-author {
    margin: 0;
    color: var(--ink-soft);
    font-size: 1.05rem;
}

.book-author strong {
    color: var(--ink);
}

.book-lead-desc {
    margin: 6px 0 0;
    color: var(--ink-soft);
    font-size: 0.98rem;
    line-height: 1.6;
}

/* Reading Content */
.reading-content {
    max-width: 52rem;
    font-family: "Roboto", Arial, sans-serif;
    font-size: 1.05rem;
    line-height: 1.75;
}

.reading-content h3 {
    margin: 26px 0 8px;
    color: var(--accent);
    font-size: 1.05rem;
}

.reading-content p {
    margin: 0 0 16px;
}

.reading-content ol {
    margin: 0;
    padding-left: 1.3rem;
}

.reading-content li + li {
    margin-top: 8px;
}

@media (max-width: 620px) {
    .book-hero-section {
        grid-template-columns: 1fr;
        justify-items: center;
        text-align: center;
        padding: 24px 18px;
        gap: 18px;
    }

    .book-hero-cover {
        width: 130px;
    }

    .book-genre-tag {
        align-self: center;
    }

    .reading-header,
    .video-section,
    .reading-content {
        padding: 20px 16px;
    }
}