/* Trang Giới thiệu: bố cục riêng cho từng phần để trang bớt đơn điệu. Tiền tố ab- để không trùng CSS chung. */

/* 1. Về TTC: chữ bên trái, ảnh bên phải */
.ab-about-grid{display:grid;gap:28px;align-items:center}
.ab-about-text h2{font-size:var(--fs-h2);line-height:1.08;letter-spacing:-.02em;color:var(--ink)}
.ab-about-text p{margin-top:16px;max-width:58ch;font-size:1.0625rem;line-height:1.65;color:var(--ink)}
.ab-about-ph{margin:0;overflow:hidden;aspect-ratio:3/2;background:#d6e2f0;border-radius:6px}
.ab-about-ph img{width:100%;height:100%;object-fit:cover}
@media (min-width:900px){
  .ab-about-grid{grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr);gap:56px}
}
.ab-chips{display:flex;flex-wrap:wrap;gap:8px;margin:20px 0 0;padding:0;list-style:none}
.ab-chips li{padding:7px 14px;border-radius:var(--radius-pill,999px);background:var(--brand-50);color:var(--brand-900);font-size:.9375rem;font-weight:600;line-height:1.3}
.ab-chips--sm{margin-top:14px}
.ab-chips--sm li{background:#fff;font-size:.875rem;font-weight:500;box-shadow:inset 0 0 0 1px var(--track)}

/* Số liệu: dải xanh đậm, số lớn màu vàng */
.ab-stats{background:var(--brand-900);color:#fff}
.ab-stats ul{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));margin:0;padding:0;list-style:none}
.ab-stats li{padding:26px 16px;border-top:1px solid rgba(255,255,255,.14);display:flex;flex-direction:column;gap:6px}
.ab-stats li:nth-child(-n+2){border-top:0}
.ab-stats li:nth-child(odd){padding-left:0}
.ab-stats b{font-family:var(--font-serif);font-weight:600;font-size:clamp(2.5rem,3vw + 1.2rem,3.75rem);line-height:1;color:var(--accent-yellow)}
.ab-stats span{font-size:.9375rem;line-height:1.4;color:#dbe6f5;max-width:22ch}
@media (min-width:760px){
  .ab-stats ul{grid-template-columns:repeat(4,minmax(0,1fr))}
  .ab-stats li,.ab-stats li:nth-child(-n+2){border-top:0;border-left:1px solid rgba(255,255,255,.14);padding:34px 24px}
  .ab-stats li:first-child{border-left:0;padding-left:0}
}

/* 2. Sứ mạng, tầm nhìn, giá trị: một ảnh lớn và ba mệnh đề */
.ab-values{background:var(--paper-2)}
.ab-values-grid{display:grid;gap:28px;align-items:stretch}
.ab-values-ph{margin:0;overflow:hidden;min-height:240px;background:#d6e2f0;border-radius:6px}
.ab-values-ph img{width:100%;height:100%;object-fit:cover}
.ab-values-list{margin:0;display:grid;gap:0}
.ab-values-list>div{padding:20px 0 20px 22px;border-left:4px solid var(--brand)}
.ab-values-list>div:nth-child(2){border-left-color:var(--accent-orange)}
.ab-values-list>div:nth-child(3){border-left-color:var(--accent-yellow)}
.ab-values-list>div+div{margin-top:8px}
.ab-values-list dt{font-family:var(--font-serif);font-weight:600;font-size:1.5rem;line-height:1.2;color:var(--brand-900)}
.ab-values-list dd{margin:8px 0 0;font-size:1.0625rem;line-height:1.6;color:var(--ink)}
@media (min-width:900px){
  .ab-values-grid{grid-template-columns:minmax(0,.9fr) minmax(0,1.1fr);gap:48px}
  .ab-values-ph{min-height:100%}
}

/* 3. Ba trụ cột: ba thẻ có số lớn */
.ab-pillars-grid{display:grid;gap:16px}
@media (min-width:900px){.ab-pillars-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}}
.ab-pillar{position:relative;display:flex;flex-direction:column;gap:10px;padding:26px 24px 24px;background:#fff;border:1px solid var(--track);border-top:4px solid var(--brand);border-radius:6px;transition:transform var(--t-mid,.3s) var(--ease,ease),box-shadow var(--t-mid,.3s) var(--ease,ease)}
.ab-pillar:nth-child(2){border-top-color:var(--accent-orange)}
.ab-pillar:nth-child(3){border-top-color:var(--accent-yellow)}
.ab-pillar:hover{transform:translateY(-3px);box-shadow:0 18px 30px -22px rgba(0,38,79,.45)}
.ab-num{font-family:var(--font-serif);font-weight:600;font-size:2.75rem;line-height:1;color:var(--brand-50);-webkit-text-stroke:1px var(--brand);letter-spacing:-.02em}
.ab-pillar h3{font-size:1.375rem;line-height:1.25;color:var(--ink)}
.ab-pillar p{line-height:1.6;color:var(--ink)}
.ab-more{margin-top:auto;display:inline-flex;align-items:center;gap:8px;min-height:44px;font-weight:600;color:var(--brand);text-decoration:none}
.ab-more:hover{text-decoration:underline}
.ab-more .arrow{width:16px;height:16px}

/* 6. Cơ sở: thẻ trắng trên nền nhạt, vạch màu bên trái */
.ab-campus .pg-campus li{background:#fff;border-left:4px solid var(--brand);border-radius:0 6px 6px 0}
.ab-campus .pg-campus li:nth-child(2n){border-left-color:var(--accent-orange)}
.ab-campus .pg-campus li:nth-child(3n){border-left-color:var(--accent-yellow)}