.tdq-library-page {
    background: #f5f7fb;
    padding: 34px 0 64px;
}

.tdq-library-page__shell {
    width: min(1180px, calc(100% - 32px));
    margin: 0 auto;
}

.tdq-library-page__hero {
    margin-bottom: 24px;
}

.tdq-library-page__hero h1 {
    margin: 8px 0 0;
    font-size: clamp(28px, 4vw, 44px);
    line-height: 1.15;
}

.tdq-library-page__excerpt {
    max-width: 850px;
    margin-top: 12px;
    color: #526074;
    font-size: 17px;
}

.tdq-library-page__breadcrumb {
    color: #6b7280;
    font-size: 14px;
}

.tdq-exam-library {
    margin: 0 0 34px;
    padding: 26px;
    border: 1px solid #e4e8f0;
    border-radius: 20px;
    background: #fff;
    box-shadow: 0 14px 40px rgba(20, 35, 60, 0.07);
}

.tdq-exam-library__header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 20px;
    margin-bottom: 22px;
}

.tdq-exam-library__header h2 {
    margin: 4px 0 0;
    font-size: clamp(24px, 3vw, 34px);
    line-height: 1.2;
}

.tdq-exam-library__kicker {
    display: inline-block;
    color: #087a52;
    font-size: 12px;
    font-weight:600;
    letter-spacing: 0.08em;
}

.tdq-exam-library__description {
    max-width: 780px;
    margin-top: 9px;
    color: #5b6472;
}

.tdq-exam-library__description p {
    margin: 0;
}

.tdq-exam-library__count {
    flex: 0 0 auto;
    padding: 7px 11px;
    border-radius: 999px;
    background: #edf8f3;
    color: #087a52;
    font-size: 13px;
    font-weight:600;
}

.tdq-exam-library__tabs {
    display: flex;
    gap: 8px;
    margin-bottom: 20px;
    padding-bottom: 4px;
    overflow-x: auto;
}

.tdq-exam-library__tab {
    flex: 0 0 auto;
    padding: 10px 14px;
    border: 1px solid #dce3ed;
    border-radius: 999px;
    background: #fff;
    color: #344054;
    font-weight:600;
    cursor: pointer;
}

.tdq-exam-library__tab span {
    display: inline-grid;
    min-width: 22px;
    height: 22px;
    margin-left: 6px;
    place-items: center;
    border-radius: 999px;
    background: #eef2f6;
    font-size: 12px;
}

.tdq-exam-library__tab.is-active {
    border-color: #087a52;
    background: #087a52;
    color: #fff;
}

.tdq-exam-library__tab.is-active span {
    background: rgba(255,255,255,.2);
}

.tdq-exam-library__group.is-hidden {
    display: none;
}

.tdq-exam-library__group > h3 {
    margin: 0 0 14px;
    font-size: 21px;
}

.tdq-exam-library__items {
    display: grid;
    grid-template-columns: repeat(var(--tdq-library-columns, 4), minmax(0, 1fr));
    gap: 14px;
}

.tdq-exam-card {
    display: flex;
    min-height: 190px;
    flex-direction: column;
    padding: 18px;
    border: 1px solid #e4e8ef;
    border-radius: 15px;
    background: #fff;
    transition: transform .18s ease, box-shadow .18s ease, border-color .18s ease;
}

.tdq-exam-card:hover {
    transform: translateY(-2px);
    border-color: #b7dbc9;
    box-shadow: 0 12px 24px rgba(25, 55, 45, .09);
}

.tdq-exam-card__top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
}

.tdq-exam-card__number,
.tdq-exam-card__class {
    color: #087a52;
    font-size: 12px;
    font-weight:600;
    text-transform: uppercase;
}

.tdq-exam-card__class {
    color: #667085;
}

.tdq-exam-card h3 {
    margin: 14px 0 10px;
    font-size: 17px;
    line-height: 1.45;
}

.tdq-exam-card h3 a {
    color: #192334;
    text-decoration: none;
}

.tdq-exam-card__meta {
    margin-bottom: 18px;
    color: #697586;
    font-size: 13px;
}

.tdq-exam-card__button {
    display: inline-flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
    margin-top: auto;
    padding: 10px 12px;
    border-radius: 10px;
    background: #edf8f3;
    color: #087a52;
    font-weight:600;
    text-decoration: none;
}

.tdq-exam-card__button:hover {
    background: #087a52;
    color: #fff;
}

.tdq-exam-library--list .tdq-exam-library__items {
    display: flex;
    flex-direction: column;
    gap: 9px;
}

.tdq-exam-library__list-item {
    display: flex;
    align-items: center;
    gap: 13px;
    padding: 13px 15px;
    border: 1px solid #e3e8ef;
    border-radius: 12px;
    color: #202939;
    text-decoration: none;
}

.tdq-exam-library__list-item:hover {
    border-color: #9dcfb9;
    background: #f7fcf9;
}

.tdq-exam-library__number {
    display: grid;
    width: 38px;
    height: 38px;
    flex: 0 0 38px;
    place-items: center;
    border-radius: 10px;
    background: #edf8f3;
    color: #087a52;
    font-weight:600;
}

.tdq-exam-library__list-copy {
    min-width: 0;
    flex: 1;
}

.tdq-exam-library__list-copy strong,
.tdq-exam-library__list-copy small {
    display: block;
}

.tdq-exam-library__list-copy small {
    margin-top: 3px;
    color: #667085;
}

.tdq-exam-library__arrow {
    color: #087a52;
    font-size: 20px;
}

.tdq-exam-library__quick-select {
    padding: 18px;
    border: 1px solid #e1e7ee;
    border-radius: 14px;
    background: #f8fafc;
}

.tdq-exam-library__quick-select label {
    display: block;
    margin-bottom: 8px;
    font-weight:600;
}

.tdq-exam-library__quick-row {
    display: flex;
    gap: 10px;
}

.tdq-exam-library__select {
    min-width: 0;
    flex: 1;
    min-height: 46px;
    padding: 0 12px;
    border: 1px solid #cfd7e3;
    border-radius: 10px;
    background: #fff;
}

.tdq-exam-library__go {
    min-height: 46px;
    padding: 0 18px;
    border: 0;
    border-radius: 10px;
    background: #087a52;
    color: #fff;
    font-weight:600;
    cursor: pointer;
}

.tdq-exam-library__go:disabled {
    opacity: .5;
    cursor: not-allowed;
}

.tdq-exam-library__empty {
    padding: 18px;
    border: 1px dashed #cfd7e3;
    border-radius: 12px;
    background: #fafbfc;
    color: #5b6472;
}

.tdq-library-page__content {
    padding: 28px;
    border: 1px solid #e4e8f0;
    border-radius: 20px;
    background: #fff;
    box-shadow: 0 10px 28px rgba(20, 35, 60, 0.05);
}

.tdq-library-page__content > :first-child {
    margin-top: 0;
}

.tdq-library-page__content > :last-child {
    margin-bottom: 0;
}

@media (max-width: 1024px) {
    .tdq-exam-library__items {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }
}

@media (max-width: 760px) {
    .tdq-library-page {
        padding-top: 20px;
    }

    .tdq-library-page__shell {
        width: min(100% - 20px, 1180px);
    }

    .tdq-exam-library,
    .tdq-library-page__content {
        padding: 18px;
        border-radius: 15px;
    }

    .tdq-exam-library__header {
        display: block;
    }

    .tdq-exam-library__count {
        display: inline-block;
        margin-top: 12px;
    }

    .tdq-exam-library__items {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .tdq-exam-library__quick-row {
        display: block;
    }

    .tdq-exam-library__select,
    .tdq-exam-library__go {
        width: 100%;
    }

    .tdq-exam-library__go {
        margin-top: 9px;
    }
}

@media (max-width: 520px) {
    .tdq-exam-library__items {
        grid-template-columns: 1fr;
    }
}

/* 2.3.8: Trang riêng /do-vui-do-meo/ chỉ hiển thị 4 bộ theo danh sách dọc. */
.tdq-exam-library--fun .tdq-exam-library__fun-group-title{margin:0 0 14px;color:#26313d;font-size:18px}
.tdq-exam-library--fun.tdq-exam-library--list .tdq-exam-library__items{gap:12px}
.tdq-exam-library--fun .tdq-exam-library__list-item{min-height:76px;padding:15px 17px;border-radius:14px;transition:transform .16s ease,box-shadow .16s ease,border-color .16s ease,background .16s ease}
.tdq-exam-library--fun .tdq-exam-library__list-item:hover{transform:translateY(-1px);box-shadow:0 8px 20px rgba(25,55,45,.07)}
.tdq-exam-library--fun .tdq-exam-library__number{width:48px;height:48px;flex-basis:48px;border-radius:12px;font-size:16px}
.tdq-exam-library--fun .tdq-exam-library__list-copy strong{font-size:16px;line-height:1.45}
.tdq-exam-library--fun .tdq-exam-library__list-copy small{margin-top:5px;color:#6b7683;font-size:13px}
.tdq-exam-library--fun .tdq-exam-library__arrow{font-size:20px}
@media(max-width:520px){
  .tdq-exam-library--fun .tdq-exam-library__list-item{min-height:70px;padding:13px 12px;gap:10px}
  .tdq-exam-library--fun .tdq-exam-library__number{width:44px;height:44px;flex-basis:44px;font-size:15px}
  .tdq-exam-library--fun .tdq-exam-library__list-copy strong{font-size:15px}
}