/* ========================================
   기관소개 페이지
======================================== */

/* ───── 페이지 배너 ───── */
.ab-banner {
    position: relative;
    padding: 120px 0 80px;
    background: linear-gradient(135deg, var(--dark) 0%, var(--dark-3) 50%, var(--point-dark) 100%);
    overflow: hidden;
}
.ab-banner-bg {
    position: absolute; inset: 0;
    background: radial-gradient(ellipse at 70% 20%, rgba(85,58,231,.25) 0%, transparent 60%),
                radial-gradient(ellipse at 20% 80%, rgba(107,82,237,.15) 0%, transparent 50%);
}
.ab-banner-content { position: relative; text-align: center; }
.ab-banner-label {
    display: inline-block;
    font-size: 17px; font-weight: 700; letter-spacing: 3px;
    color: rgba(255,255,255,.6);
    padding: 6px 18px;
    border: 1px solid rgba(255,255,255,.2);
    border-radius: 30px;
    margin-bottom: 20px;
    text-transform: uppercase;
}
.ab-banner-title {
    font-size: 42px; font-weight: 800; color: #fff;
    letter-spacing: -1px; margin-bottom: 16px;
}
.ab-banner-desc {
    font-size: 17px; color: rgba(255,255,255,.65); font-weight: 400;
}

/* ───── 인사말 ───── */
.ab-greeting-grid {
    display: grid;
    grid-template-columns: 1fr 380px;
    gap: 60px;
    align-items: center;
}
.ab-greeting-text .section-label { margin-bottom: 24px; }
.ab-greeting-title {
    font-size: 30px; font-weight: 800; color: var(--text);
    line-height: 1.4; margin-bottom: 32px;
    letter-spacing: -.5px;
}
.ab-greeting-body p {
    font-size: 17px; line-height: 1.9; color: var(--text-2);
    margin-bottom: 16px;
}
.ab-greeting-body strong { color: var(--point); font-weight: 700; }
.ab-greeting-sign {
    margin-top: 32px; padding-top: 24px;
    border-top: 1px solid var(--border-light);
}
.ab-sign-role { font-size: 16px; color: var(--text-3); font-weight: 600; }

.ab-visual-card {
    background: linear-gradient(135deg, var(--point) 0%, var(--accent) 100%);
    border-radius: 20px;
    padding: 48px 36px;
    text-align: center;
    position: relative;
    overflow: hidden;
}
.ab-visual-icon {
    font-size: 32px; color: rgba(255,255,255,.25); margin-bottom: 20px;
}
.ab-visual-quote {
    font-size: 20px; font-weight: 700; color: #fff;
    line-height: 1.6;
}
.ab-visual-deco {
    position: absolute; bottom: -30px; right: -30px;
    width: 120px; height: 120px;
    border-radius: 50%;
    background: rgba(255,255,255,.08);
}

/* ───── 비전 & 미션 ───── */
.ab-vm-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 32px;
}
.ab-vm-card {
    background: #fff;
    border-radius: var(--radius);
    padding: 48px 40px;
    border: 1px solid var(--border-light);
    transition: var(--transition);
}
.ab-vm-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}
.ab-vm-icon {
    width: 56px; height: 56px;
    border-radius: 14px;
    display: flex; align-items: center; justify-content: center;
    font-size: 22px;
    margin-bottom: 24px;
}
.ab-vm-vision .ab-vm-icon {
    background: var(--primary-bg);
    color: var(--point);
}
.ab-vm-mission .ab-vm-icon {
    background: var(--success-bg);
    color: var(--success);
}
.ab-vm-label {
    font-size: 17px; font-weight: 800; letter-spacing: 2px;
    color: var(--text-3); margin-bottom: 12px;
}
.ab-vm-title {
    font-size: 22px; font-weight: 800; color: var(--text);
    margin-bottom: 16px; letter-spacing: -.3px;
}
.ab-vm-desc {
    font-size: 17px; line-height: 1.8; color: var(--text-2);
}

/* ───── 핵심 가치 ───── */
.ab-values-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}
.ab-value-card {
    background: #fff;
    border-radius: var(--radius);
    padding: 40px 32px;
    border: 1px solid var(--border-light);
    position: relative;
    overflow: hidden;
    transition: var(--transition);
}
.ab-value-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    border-color: var(--point);
}
.ab-value-num {
    position: absolute; top: 20px; right: 24px;
    font-size: 48px; font-weight: 900;
    color: rgba(85,58,231,.06);
    line-height: 1;
}
.ab-value-icon {
    width: 50px; height: 50px;
    border-radius: 12px;
    background: linear-gradient(135deg, var(--point), var(--accent));
    display: flex; align-items: center; justify-content: center;
    font-size: 20px; color: #fff;
    margin-bottom: 24px;
}
.ab-value-title {
    font-size: 19px; font-weight: 800; color: var(--text);
    margin-bottom: 12px;
}
.ab-value-desc {
    font-size: 16px; line-height: 1.8; color: var(--text-2);
}

/* ───── 교육 성과 ───── */
.ab-stats {
    position: relative;
    background: linear-gradient(135deg, var(--dark) 0%, var(--point-dark) 100%);
    overflow: hidden;
}
.ab-stats-bg {
    position: absolute; inset: 0;
    background: radial-gradient(circle at 30% 50%, rgba(85,58,231,.2) 0%, transparent 50%);
}
.ab-stats .container { position: relative; }
.ab-stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 32px;
}
.ab-stat-item {
    text-align: center;
    padding: 32px 16px;
    border-radius: var(--radius);
    background: rgba(255,255,255,.06);
    border: 1px solid rgba(255,255,255,.1);
    transition: var(--transition);
}
.ab-stat-item:hover {
    background: rgba(255,255,255,.1);
    transform: translateY(-4px);
}
.ab-stat-icon {
    font-size: 28px; color: var(--accent-light);
    margin-bottom: 16px;
}
.ab-stat-number {
    font-size: 40px; font-weight: 900; color: #fff;
    letter-spacing: -1px; margin-bottom: 8px;
}
.ab-stat-number span {
    font-size: 22px; font-weight: 600; color: rgba(255,255,255,.6);
}
.ab-stat-label {
    font-size: 16px; color: rgba(255,255,255,.6); font-weight: 500;
}

/* ───── 교육 철학 ───── */
.ab-phil-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}
.ab-phil-card {
    background: #fff;
    border-radius: var(--radius);
    padding: 40px 32px;
    text-align: center;
    border: 1px solid var(--border-light);
    transition: var(--transition);
}
.ab-phil-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}
.ab-phil-icon {
    width: 64px; height: 64px;
    border-radius: 50%;
    background: var(--primary-bg);
    color: var(--point);
    font-size: 24px;
    display: flex; align-items: center; justify-content: center;
    margin: 0 auto 24px;
}
.ab-phil-card h3 {
    font-size: 18px; font-weight: 800; color: var(--text);
    margin-bottom: 12px;
}
.ab-phil-card p {
    font-size: 16px; line-height: 1.8; color: var(--text-2);
}

/* ───── 주요 교육 파트너 ───── */
.ab-partner-list {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 16px;
    max-width: 900px;
    margin: 0 auto;
}
.ab-partner-item {
    background: #fff;
    border: 1px solid var(--border-light);
    border-radius: var(--radius-sm);
    padding: 20px 12px;
    text-align: center;
    font-size: 16px; font-weight: 700; color: var(--text-2);
    transition: var(--transition);
}
.ab-partner-item:hover {
    border-color: var(--point);
    color: var(--point);
    box-shadow: var(--shadow-sm);
}
.ab-partner-note {
    text-align: center;
    margin-top: 24px;
    font-size: 16px; color: var(--text-3); font-weight: 500;
}

/* ───── 기관 정보 ───── */
.ab-info-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}
.ab-info-card {
    background: #fff;
    border-radius: var(--radius);
    padding: 36px 24px;
    text-align: center;
    border: 1px solid var(--border-light);
    transition: var(--transition);
}
.ab-info-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-sm);
}
.ab-info-icon {
    width: 48px; height: 48px;
    border-radius: 12px;
    background: var(--primary-bg);
    color: var(--point);
    font-size: 20px;
    display: flex; align-items: center; justify-content: center;
    margin: 0 auto 16px;
}
.ab-info-card h3 {
    font-size: 16px; font-weight: 700; color: var(--text);
    margin-bottom: 10px;
}
.ab-info-card p {
    font-size: 17px; line-height: 1.7; color: var(--text-2);
}
.ab-info-card a {
    color: var(--point); font-weight: 600;
}
.ab-info-card a:hover { text-decoration: underline; }

/* ───── 반응형 ───── */
@media (max-width: 1024px) {
    .ab-greeting-grid { grid-template-columns: 1fr; gap: 40px; }
    .ab-greeting-visual { order: -1; }
    .ab-visual-card { max-width: 400px; margin: 0 auto; }
    .ab-values-grid, .ab-phil-grid { grid-template-columns: 1fr 1fr; }
    .ab-stats-grid { grid-template-columns: repeat(2, 1fr); }
    .ab-partner-list { grid-template-columns: repeat(4, 1fr); }
    .ab-info-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
    .ab-banner { padding: 100px 0 60px; }
    .ab-banner-title { font-size: 30px; }
    .ab-banner-desc { font-size: 17px; }
    .ab-greeting-title { font-size: 24px; }
    .ab-vm-grid { grid-template-columns: 1fr; }
    .ab-vm-card { padding: 36px 28px; }
    .ab-values-grid, .ab-phil-grid { grid-template-columns: 1fr; }
    .ab-stats-grid { grid-template-columns: 1fr 1fr; gap: 16px; }
    .ab-stat-number { font-size: 32px; }
    .ab-partner-list { grid-template-columns: repeat(3, 1fr); }
    .ab-info-grid { grid-template-columns: 1fr; }
}

/* ───── 연혁 타임라인 ───── */
.ab-history-timeline {
    max-width: 700px;
    margin: 0 auto;
    position: relative;
    padding-left: 40px;
}
.ab-history-timeline::before {
    content: '';
    position: absolute;
    left: 12px;
    top: 0;
    bottom: 0;
    width: 3px;
    background: linear-gradient(to bottom, var(--point), var(--point-light));
    border-radius: 2px;
}
.ab-history-item {
    position: relative;
    margin-bottom: 40px;
}
.ab-history-item::before {
    content: '';
    position: absolute;
    left: -34px;
    top: 6px;
    width: 14px;
    height: 14px;
    background: var(--point);
    border: 3px solid #fff;
    border-radius: 50%;
    box-shadow: 0 0 0 3px var(--point-light);
}
.ab-history-year {
    font-size: 28px;
    font-weight: 800;
    color: var(--point);
    margin-bottom: 8px;
}
.ab-history-content h4 {
    font-size: 18px;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 8px;
}
.ab-history-content p {
    font-size: 17px;
    color: var(--gray);
    line-height: 1.7;
    margin: 0;
    padding-left: 12px;
    position: relative;
}
.ab-history-content p::before {
    content: '·';
    position: absolute;
    left: 0;
    color: var(--point);
    font-weight: bold;
}

/* ───── 교육 특징 6칸 그리드 ───── */
.ab-features .ab-phil-grid {
    grid-template-columns: repeat(3, 1fr);
}

@media (max-width: 768px) {
    .ab-features .ab-phil-grid { grid-template-columns: repeat(2, 1fr); }
    .ab-history-timeline { padding-left: 30px; }
    .ab-history-item::before { left: -24px; }
}

@media (max-width: 480px) {
    .ab-banner-title { font-size: 26px; }
    .ab-stats-grid { grid-template-columns: 1fr 1fr; }
    .ab-partner-list { grid-template-columns: repeat(2, 1fr); }
    .ab-features .ab-phil-grid { grid-template-columns: 1fr; }
}