:root {
    --agf-blue: #0f4af2;
    --agf-blue-deep: #0b39c8;
    --agf-navy: #071331;
    --agf-ink: #0b1d43;
    --agf-muted: #52668f;
    --agf-line: #cfdbf2;
    --agf-soft: #f3f7ff;
    --agf-cyan: #20aeea;
    --agf-white: #fff;
}

.agf-dlbook-page .entry-header,
.agf-dlbook-page .page-header,
.agf-dlbook-page .entry-title {
    display: none !important;
}

.agf-dlbook-page .site-main,
.agf-dlbook-page .content-area,
.agf-dlbook-page .entry-content,
.agf-dlbook-page article.page,
.agf-dlbook-page .elementor-widget-container {
    max-width: none !important;
    margin: 0 !important;
    padding: 0 !important;
}

.agf-dlbook {
    width: min(1680px, calc(100vw - 48px));
    margin: 0 auto;
    padding: 0 0 72px;
    color: var(--agf-ink);
    font-family: Inter, Arial, sans-serif;
    letter-spacing: 0;
}

.agf-dlbook *,
.agf-dlbook *::before,
.agf-dlbook *::after {
    box-sizing: border-box;
}

.agf-sitebar {
    display: flex;
    align-items: center;
    gap: 24px;
    min-height: 72px;
    padding: 12px 0;
    border-bottom: 1px solid var(--agf-line);
}

.agf-sitebar > a:not(.agf-brand) {
    color: var(--agf-muted);
    font-size: 14px;
    font-weight: 650;
    text-decoration: none;
}

.agf-sitebar > a:not(.agf-brand):hover { color: var(--agf-blue); }

.agf-brand {
    display: inline-flex;
    align-items: baseline;
    margin-right: auto;
    color: var(--agf-navy);
    font-size: 28px;
    font-weight: 500;
    line-height: 1;
    text-decoration: none;
}

.agf-brand strong { color: var(--agf-blue); font-weight: 500; }

.agf-kicker {
    display: block;
    margin-bottom: 12px;
    color: var(--agf-blue);
    font-size: 12px;
    font-weight: 800;
    line-height: 1.3;
    letter-spacing: .08em;
    text-transform: uppercase;
}

.agf-index-hero {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 230px;
    gap: 64px;
    align-items: center;
    min-height: 500px;
    padding: 64px clamp(32px, 5vw, 88px);
    border: 1px solid #1c408c;
    border-top: 5px solid var(--agf-blue);
    border-radius: 8px;
    background: linear-gradient(120deg, #071331 0%, #10265a 65%, #0f4af2 150%);
    color: #fff;
}

.agf-index-hero h1 {
    max-width: 980px;
    margin: 0 0 24px;
    color: #fff;
    font-size: clamp(44px, 6vw, 78px);
    font-weight: 760;
    line-height: 1.02;
    letter-spacing: 0;
}

.agf-index-hero p {
    max-width: 880px;
    margin: 0;
    color: #dce7ff;
    font-size: clamp(17px, 1.5vw, 21px);
    line-height: 1.65;
}

.agf-index-hero .agf-kicker { color: #8fb1ff; }

.agf-index-hero__actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 30px; }

.agf-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 48px;
    padding: 12px 18px;
    border: 1px solid rgba(255,255,255,.38);
    border-radius: 6px;
    color: #fff;
    font-size: 14px;
    font-weight: 750;
    text-decoration: none;
}

.agf-button--primary { border-color: var(--agf-blue); background: var(--agf-blue); }
.agf-button:hover { color: #fff; transform: translateY(-1px); }

.agf-book-cover {
    display: block;
    overflow: hidden;
    border: 1px solid rgba(255,255,255,.35);
    border-radius: 5px;
    background: #fff;
    box-shadow: 0 24px 60px rgba(0,0,0,.28);
}
.agf-book-cover img { display: block; width: 100%; height: auto; aspect-ratio: 1000 / 1499; object-fit: cover; }

.agf-lab-nav {
    display: grid;
    grid-template-columns: 126px minmax(0, 1fr);
    gap: 12px;
    margin: 22px 0 42px;
}

.agf-lab-nav a {
    display: flex;
    align-items: center;
    min-height: 48px;
    border: 1px solid var(--agf-line);
    border-radius: 6px;
    background: #fff;
    color: var(--agf-ink);
    font-size: 13px;
    font-weight: 700;
    text-decoration: none;
}

.agf-lab-nav__all { justify-content: center; }
.agf-lab-nav__list { display: grid; grid-template-columns: repeat(7, minmax(0, 1fr)); gap: 8px; }
.agf-lab-nav__list a { gap: 8px; padding: 8px 10px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.agf-lab-nav__list span { color: var(--agf-blue); font-size: 11px; }
.agf-lab-nav a:hover,
.agf-lab-nav a.is-active { border-color: var(--agf-blue); background: var(--agf-blue); color: #fff; }
.agf-lab-nav a.is-active span { color: #fff; }

.agf-dlbook { scroll-behavior: smooth; }
.agf-dlbook [id] { scroll-margin-top: 92px; }

.agf-learning-journey {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    margin: 0 0 18px;
    border: 1px solid var(--agf-line);
    background: #fff;
}

.agf-learning-journey a {
    display: grid;
    grid-template-columns: 38px minmax(0, 1fr);
    grid-template-rows: auto auto;
    column-gap: 12px;
    align-items: center;
    min-height: 74px;
    padding: 13px 18px;
    border-right: 1px solid var(--agf-line);
    color: var(--agf-ink);
    text-decoration: none;
}

.agf-learning-journey a:last-child { border-right: 0; }
.agf-learning-journey a:hover { background: var(--agf-soft); color: var(--agf-blue); }
.agf-learning-journey a.is-active { background: #eaf1ff; }
.agf-learning-journey a > span {
    grid-row: 1 / 3;
    display: grid;
    place-items: center;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--agf-blue);
    color: #fff;
    font-size: 13px;
    font-weight: 800;
}
.agf-learning-journey strong { align-self: end; font-size: 14px; line-height: 1.2; }
.agf-learning-journey small { align-self: start; color: var(--agf-muted); font-size: 12px; line-height: 1.3; }

.agf-learning-brief {
    display: grid;
    grid-template-columns: minmax(0, 1.25fr) minmax(360px, .75fr);
    gap: clamp(34px, 5vw, 76px);
    align-items: stretch;
    margin-bottom: 48px;
    padding: clamp(34px, 4vw, 58px);
    border-top: 4px solid var(--agf-blue);
    border-bottom: 1px solid var(--agf-line);
    background: linear-gradient(100deg, #fff 0%, #fff 58%, #f4f8ff 100%);
}

.agf-learning-brief__reading h1 {
    max-width: 900px;
    margin: 0 0 20px;
    color: var(--agf-navy);
    font-size: clamp(30px, 3.5vw, 48px);
    font-weight: 760;
    line-height: 1.08;
    letter-spacing: 0;
}

.agf-learning-brief__reading > p {
    max-width: 940px;
    margin: 0 0 13px;
    color: #344b70;
    font-size: 16px;
    line-height: 1.72;
}

.agf-evidence-label {
    display: flex;
    flex-wrap: wrap;
    gap: 8px 14px;
    align-items: center;
    margin-top: 24px;
    padding: 13px 0;
    border-top: 1px solid var(--agf-line);
    border-bottom: 1px solid var(--agf-line);
    color: var(--agf-muted);
    font-size: 13px;
    line-height: 1.45;
}
.agf-evidence-label strong { color: var(--agf-navy); font-size: 12px; text-transform: uppercase; }

.agf-guided-task {
    min-width: 0;
    padding-left: clamp(28px, 4vw, 52px);
    border-left: 1px solid var(--agf-line);
}
.agf-guided-task h2 { margin: 0 0 20px; color: var(--agf-navy); font-size: 24px; line-height: 1.2; }
.agf-guided-task ol { display: grid; gap: 15px; margin: 0 0 26px; padding: 0; list-style: none; }
.agf-guided-task li { display: grid; grid-template-columns: 34px minmax(0, 1fr); gap: 13px; align-items: start; }
.agf-guided-task li > span {
    display: grid;
    place-items: center;
    width: 32px;
    height: 32px;
    border: 1px solid #b8ccf7;
    border-radius: 50%;
    color: var(--agf-blue);
    font-size: 12px;
    font-weight: 800;
}
.agf-guided-task li strong { display: block; margin: 1px 0 4px; color: var(--agf-navy); font-size: 14px; }
.agf-guided-task li p { margin: 0; color: var(--agf-muted); font-size: 13px; line-height: 1.5; }

.agf-phase-cta {
    display: inline-flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    min-height: 52px;
    padding: 13px 17px;
    border: 1px solid var(--agf-blue);
    background: var(--agf-blue);
    color: #fff;
    font-size: 14px;
    font-weight: 780;
    line-height: 1.25;
    text-decoration: none;
}
.agf-phase-cta:hover { background: var(--agf-blue-deep); color: #fff; }
.agf-phase-cta > span { font-size: 18px; line-height: 1; }

.agf-phase-heading {
    display: flex;
    justify-content: space-between;
    gap: 36px;
    align-items: end;
    margin-bottom: 20px;
    padding: 4px 0 18px;
    border-bottom: 1px solid var(--agf-line);
}
.agf-phase-heading .agf-kicker { margin-bottom: 7px; }
.agf-phase-heading h2 { margin: 0; color: var(--agf-navy); font-size: clamp(26px, 3vw, 38px); line-height: 1.1; }
.agf-phase-heading > p { max-width: 540px; margin: 0; color: var(--agf-muted); font-size: 14px; line-height: 1.55; }
.agf-phase-cta--next { margin: 20px 0 0 auto; }

.agf-index-intro {
    display: grid;
    grid-template-columns: minmax(0, .75fr) minmax(320px, 1fr);
    gap: 60px;
    align-items: end;
    margin-bottom: 28px;
}
.agf-index-intro h2 { margin: 0; color: var(--agf-navy); font-size: clamp(30px, 4vw, 48px); line-height: 1.08; }
.agf-index-intro > p { margin: 0; color: var(--agf-muted); font-size: 17px; line-height: 1.7; }

.agf-lab-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; }
.agf-lab-card {
    display: flex;
    flex-direction: column;
    min-height: 410px;
    padding: 28px;
    border: 1px solid var(--agf-line);
    border-radius: 8px;
    background: #fff;
    box-shadow: 0 16px 40px rgba(7,19,49,.06);
}
.agf-lab-card__top { display: flex; align-items: center; justify-content: space-between; margin-bottom: 40px; }
.agf-lab-card__number { display: grid; place-items: center; width: 42px; height: 42px; border-radius: 50%; background: var(--agf-blue); color: #fff; font-weight: 800; }
.agf-lab-card__type { color: var(--agf-muted); font-size: 11px; font-weight: 800; letter-spacing: .07em; text-transform: uppercase; }
.agf-lab-card h3 { margin: 0 0 14px; color: var(--agf-navy); font-size: 25px; line-height: 1.15; }
.agf-lab-card p { margin: 0 0 18px; color: var(--agf-muted); font-size: 15px; line-height: 1.65; }
.agf-lab-card ul { display: flex; flex-wrap: wrap; gap: 7px; margin: 0 0 24px; padding: 0; list-style: none; }
.agf-lab-card li { padding: 6px 9px; border: 1px solid #dbe5f7; border-radius: 4px; background: var(--agf-soft); color: #365078; font-size: 11px; font-weight: 700; }
.agf-lab-card > a { margin-top: auto; color: var(--agf-blue); font-size: 14px; font-weight: 800; text-decoration: none; }

.agf-lab-hero {
    display: grid;
    grid-template-columns: 124px minmax(0, 1fr) minmax(300px, .58fr);
    gap: 34px;
    align-items: center;
    min-height: 310px;
    padding: 42px clamp(28px, 4vw, 68px);
    border-radius: 8px;
    background: linear-gradient(115deg, #071331, #102861 70%, #0f4af2 150%);
    color: #fff;
}
.agf-lab-hero__number { display: grid; place-items: center; width: 112px; height: 112px; border: 1px solid rgba(255,255,255,.36); border-radius: 50%; color: #fff; font-size: 17px; font-weight: 800; }
.agf-lab-hero h1 { margin: 0 0 15px; color: #fff; font-size: clamp(34px, 4vw, 58px); line-height: 1.06; }
.agf-lab-hero__copy > p { max-width: 800px; margin: 0; color: #dce7ff; font-size: 17px; line-height: 1.65; }
.agf-lab-hero .agf-kicker { color: #94b4ff; }
.agf-lab-hero__objective { padding: 22px; border-left: 3px solid var(--agf-cyan); background: rgba(255,255,255,.08); }
.agf-lab-hero__objective span { color: #8fb1ff; font-size: 11px; font-weight: 800; letter-spacing: .08em; text-transform: uppercase; }
.agf-lab-hero__objective p { margin: 8px 0 0; color: #fff; font-size: 14px; line-height: 1.6; }

.agf-lab-workspace {
    width: 100%;
    min-height: 720px;
    margin: 0 0 44px;
}
.agf-lab-workspace .ag-book__lesson-lab { width: 100%; margin: 0; }
.agf-lab-workspace .ag-lesson-simulator { width: 100%; min-height: 700px; border-radius: 8px; box-shadow: 0 24px 65px rgba(7,19,49,.10); }
.agf-lab-workspace .ag-lesson-simulator__head { padding: 34px clamp(28px, 4vw, 56px); }
.agf-lab-workspace .ag-lesson-simulator__head h4 { font-size: clamp(30px, 4vw, 46px); }
.agf-lab-workspace .ag-lesson-simulator__body { grid-template-columns: minmax(270px, 28%) minmax(0, 1fr); min-height: 610px; }
.agf-lab-workspace .ag-lesson-simulator__controls { padding: 30px; }
.agf-lab-workspace .ag-lesson-simulator__visual { min-height: 610px; padding: 30px; }

.agf-lab-context {
    display: grid;
    grid-template-columns: minmax(0, 1.6fr) minmax(280px, .55fr);
    gap: 28px;
    margin-top: 34px;
    padding-top: 44px;
    border-top: 1px solid var(--agf-line);
}
.agf-lab-context__copy { min-width: 0; }
.agf-lab-context h2 { margin: 0 0 22px; color: var(--agf-navy); font-size: clamp(28px, 3vw, 42px); }
.agf-lab-context__copy p,
.agf-lab-context__copy li { color: #344b70; font-size: 16px; line-height: 1.75; }
.agf-lab-context__outcomes {
    display: grid;
    gap: 12px;
    margin: 0 0 30px;
    padding: 0;
    list-style: none;
}
.agf-lab-context__outcomes li {
    position: relative;
    padding: 14px 18px 14px 48px;
    border: 1px solid var(--agf-line);
    border-radius: 8px;
    background: #fff;
}
.agf-lab-context__outcomes li::before {
    content: '\2713';
    position: absolute;
    top: 14px;
    left: 18px;
    color: var(--agf-blue);
    font-weight: 800;
}
.agf-lab-context__copy img { max-width: 100%; height: auto; }
.agf-lab-context__topics { align-self: start; padding: 24px; border: 1px solid var(--agf-line); border-radius: 8px; background: var(--agf-soft); }
.agf-lab-context__topics h3 { margin: 0 0 18px; color: var(--agf-navy); font-size: 18px; }
.agf-lab-context__topics ol { display: grid; gap: 12px; margin: 0; padding: 0 0 0 22px; }
.agf-lab-context__topics li { color: var(--agf-muted); font-size: 14px; line-height: 1.5; }

.agf-lab-pager { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-top: 46px; }
.agf-lab-pager a { display: flex; flex-direction: column; min-height: 88px; padding: 20px; border: 1px solid var(--agf-line); border-radius: 8px; color: var(--agf-navy); font-size: 15px; font-weight: 750; text-decoration: none; }
.agf-lab-pager a span { margin-bottom: 7px; color: var(--agf-blue); font-size: 11px; letter-spacing: .07em; text-transform: uppercase; }
.agf-lab-pager__next { align-items: flex-end; text-align: right; }

@media (min-width: 1500px) {
    .agf-lab-workspace .ag-lesson-simulator__body { grid-template-columns: minmax(300px, 24%) minmax(0, 1fr); }
    .agf-lab-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); }
}

@media (max-width: 1180px) {
    .agf-lab-nav { grid-template-columns: 1fr; }
    .agf-lab-nav__list { grid-template-columns: repeat(4, minmax(0, 1fr)); }
    .agf-lab-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .agf-lab-hero { grid-template-columns: 90px minmax(0, 1fr); }
    .agf-lab-hero__number { width: 82px; height: 82px; }
    .agf-lab-hero__objective { grid-column: 1 / -1; }
    .agf-learning-brief { grid-template-columns: minmax(0, 1fr) minmax(320px, .72fr); gap: 34px; }
}

@media (max-width: 820px) {
    .agf-dlbook { width: min(100% - 24px, 1680px); padding-bottom: 48px; }
    .agf-sitebar { min-height: 60px; gap: 14px; }
    .agf-brand { font-size: 23px; }
    .agf-sitebar > a:not(.agf-brand) { font-size: 12px; }
    .agf-index-hero { grid-template-columns: 1fr; gap: 36px; min-height: 0; padding: 40px 24px; }
    .agf-index-hero h1 { font-size: 44px; }
    .agf-book-cover { width: 170px; }
    .agf-index-intro,
    .agf-lab-context { grid-template-columns: 1fr; gap: 20px; }
    .agf-lab-nav__list { display: flex; overflow-x: auto; scroll-snap-type: x mandatory; padding-bottom: 4px; }
    .agf-lab-nav__list a { flex: 0 0 158px; scroll-snap-align: start; }
    .agf-lab-hero { grid-template-columns: 1fr; gap: 22px; padding: 32px 24px; }
    .agf-lab-hero__number { width: auto; height: auto; justify-self: start; padding: 8px 12px; border-radius: 999px; font-size: 12px; }
    .agf-lab-workspace { min-height: 0; }
    .agf-lab-workspace .ag-lesson-simulator__body { grid-template-columns: 1fr; min-height: 0; }
    .agf-lab-workspace .ag-lesson-simulator__controls { border-right: 0; border-bottom: 1px solid var(--agf-line); }
    .agf-lab-workspace .ag-lesson-simulator__visual { min-height: 520px; }
    .agf-learning-brief { grid-template-columns: 1fr; padding: 32px 24px; }
    .agf-guided-task { padding: 28px 0 0; border-top: 1px solid var(--agf-line); border-left: 0; }
    .agf-phase-heading { display: grid; gap: 12px; align-items: start; }
}

@media (max-width: 580px) {
    .agf-sitebar > a:not(.agf-brand) { display: none; }
    .agf-index-hero h1 { font-size: 38px; }
    .agf-index-hero__actions { display: grid; }
    .agf-button { width: 100%; }
    .agf-lab-grid { grid-template-columns: 1fr; }
    .agf-lab-card { min-height: 0; }
    .agf-lab-card__top { margin-bottom: 26px; }
    .agf-lab-workspace .ag-lesson-simulator__head { display: grid; gap: 16px; padding: 24px 20px; }
    .agf-lab-workspace .ag-lesson-simulator__head h4 { font-size: 28px; }
    .agf-lab-workspace .ag-lesson-simulator__controls,
    .agf-lab-workspace .ag-lesson-simulator__visual { padding: 18px; }
    .agf-lab-workspace .ag-lesson-simulator__visual { min-height: 460px; }
    .agf-lab-pager { grid-template-columns: 1fr; }
    .agf-learning-journey { grid-template-columns: 1fr; }
    .agf-learning-journey a { min-height: 62px; border-right: 0; border-bottom: 1px solid var(--agf-line); }
    .agf-learning-journey a:last-child { border-bottom: 0; }
    .agf-learning-brief__reading h1 { font-size: 30px; }
    .agf-phase-cta { width: 100%; }
}