/* ===================================================================
   Nhà Đẹp BT — CSS của TRANG GIỚI THIỆU dạng landing page (chỉ About.aspx nạp, cùng home.css)
   Tên class là hợp đồng với Frontend/About.aspx.cs (xem quy tắc 13 trong CLAUDE.md).
   Sửa file này xong phải tăng ?v=N ở About.aspx.
   =================================================================== */

/* ---------- 1. Hero ---------- */
.about-hero {
    position: relative;
    padding: clamp(40px, 5.5vw, 70px) 0 clamp(120px, 12vw, 170px);
    /* Ảnh nền dùng chung (--page-hero-bg); khối ID 7 có ảnh riêng thì style inline ở About.aspx.cs thắng. */
    background: var(--c-primary-dark) var(--page-hero-bg, none) center / cover no-repeat;
    color: var(--c-white);
    overflow: hidden;
}
.about-hero-overlay { position: absolute; inset: 0; background: linear-gradient(100deg, rgba(0, 39, 107, .94) 0%, rgba(0, 75, 162, .78) 55%, rgba(0, 75, 162, .45) 100%); }
.about-hero .container { position: relative; z-index: 1; }
.about-hero .breadcrumb-nav {margin-bottom: clamp(22px, 4vw, 48px);display: none;}
.about-hero-kicker {margin: 0 0 12px;font-size: .875rem;font-weight: 700;letter-spacing: .18em;text-transform: uppercase;color: var(--c-accent);text-align: center;}
.about-hero-title {max-width: 720px;margin: 0 0 18px;font-size: clamp(1.8rem, 4.8vw, 3rem);font-weight: 600;line-height: 1.14;letter-spacing: 0;color: var(--c-white);margin: 0px auto;text-align: center;margin-bottom: 16px;}
.about-hero-desc {max-width: 600px;margin: 0 0 32px;font-size: 16px;line-height: 1.7;color: rgba(255, 255, 255, .92);margin: 0 auto;text-align: center;}
.about-hero-actions {display: flex;flex-wrap: wrap;gap: 14px;justify-content: center;margin-top: 16px;}
.about-hero-actions .btn-yellow {min-width: 0;padding: 10px 25px;}
.about-btn-ghost {
    display: inline-flex; align-items: center; gap: 8px; padding: 12px 28px;
    border: 2px solid rgba(255, 255, 255, .6); border-radius: var(--radius);
    color: var(--c-white); font-weight: 600;
    transition: background var(--t-fast), color var(--t-fast);
}
.about-btn-ghost:hover { background: var(--c-white); color: var(--c-primary); }

/* ---------- 2. Con số (gối lên hero) ---------- */
.about-stats { position: relative; z-index: 2; margin-top: -78px; }
.about-stats-grid {
    display: grid; grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
    background: var(--c-white); border-radius: 20px;
    box-shadow: 0 14px 44px rgba(0, 39, 107, .18);
    overflow: hidden;
}
.stat-item { display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 4px; padding: 30px 16px; text-align: center; border-left: 1px solid var(--c-line); }
.stat-item:first-child { border-left: 0; }
.stat-num { font-size: clamp(2rem, 3.6vw, 2.75rem); font-weight: 800; line-height: 1.1; color: var(--c-primary); font-variant-numeric: tabular-nums; }
.stat-label {font-size: 16px;font-weight: 500;color: var(--c-muted);}

/* ---------- 3. Câu chuyện ---------- */
.about-story {padding: clamp(30px, 7vw, 50px) 0 clamp(36px, 5vw, 50px);}
.about-story-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.1fr); gap: clamp(28px, 5vw, 72px); align-items: center; }
.about-story-media { position: relative; }
.about-story-media::before { content: ""; position: absolute; inset: 8% -4% -6% 8%; border-radius: 24px; background: var(--c-primary-mist); z-index: 0; }
.about-story-media img { position: relative; z-index: 1; width: 100%; height: auto; border-radius: 20px; }
.about-story-text .home-kicker, .about-story-text .home-title { text-align: left; }
.about-story-body {margin-top: 18px;font-size: 1.0625rem;line-height: 1.85;color: var(--c-body);text-align: justify;}
.about-story-body p { margin-bottom: 1em; }
.about-story-body ul { list-style: none; padding: 0; margin: 18px 0 0; display: grid; gap: 10px; }
.about-story-body li { position: relative; padding-left: 30px; font-weight: 500; color: var(--c-ink); }
.about-story-body li::before { content: "\f058"; font-family: "Font Awesome 6 Free"; font-weight: 900; position: absolute; left: 0; top: 0; color: var(--c-accent); font-size: 1.125rem; }

/* ---------- 4. LÄ©nh vá»±c ---------- */
.about-areas {padding: clamp(30px, 5vw, 30px) 0 clamp(56px, 7vw, 50px);background: url(../images/bg-sp.jpg) no-repeat center;background-size: cover;position: relative;}
.about-areas .home-heading{position: relative;z-index: 10;color: #fff;}
.about-areas .home-kicker{position: relative;color: #edb53b;}
.about-areas .home-heading h2{color: #fff;}
.about-areas:before{content:"";position: absolute;background-color: #004798de;left: 0;top: 0;width: 100%;height: 100%;}
.about-area-grid {display: grid;grid-template-columns: repeat(4, minmax(0, 1fr));gap: 22px;position: relative;}
.area-card {display: flex; flex-direction: column; background: var(--c-white); border-radius: 18px; overflow: hidden; color: var(--c-body);box-shadow: 0 6px 22px rgba(0, 39, 107, .1);transition: transform var(--t), box-shadow var(--t);}
a.area-card:hover { transform: translateY(-6px); box-shadow: 0 16px 38px rgba(0, 39, 107, .18); color: var(--c-body); }
.area-thumb { display: block; aspect-ratio: 4 / 3; overflow: hidden; background: var(--c-primary-mist); }
.area-thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform .6s var(--ease); }
a.area-card:hover .area-thumb img { transform: scale(1.07); }
.area-body { display: flex; flex-direction: column; gap: 8px; padding: 20px 20px 22px; flex: 1; }
.area-body strong { font-size: 1.125rem; font-weight: 700; color: var(--c-primary); }
.area-desc { font-size: .9375rem; line-height: 1.6; color: var(--c-muted); }
.area-more { margin-top: auto; padding-top: 6px; font-size: .875rem; font-weight: 600; color: var(--c-accent-dark); }
.area-more i { transition: transform var(--t); }
a.area-card:hover .area-more i { transform: translateX(4px); }

/* ---------- 5. Vì sao chọn (nền xanh nhạt, thẻ chính sách dùng lại của trang chủ) ---------- */
.about-why {padding: clamp(50px, 6vw, 50px) 0;background: var(--c-primary-mist);}

/* ---------- 6. Quy trình ---------- */
.about-process {padding: clamp(50px, 7vw, 96px) 0;}
.process-list { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 26px; counter-reset: step; }
.process-step { position: relative; text-align: center; }
/* Đường nối giữa các bước (ẩn ở bước cuối) */
.process-step:not(:last-child)::after { content: ""; position: absolute; top: 40px; left: calc(50% + 52px); right: calc(-50% + 52px); border-top: 2px dashed var(--c-line); }
.process-icon {
    position: relative; display: inline-flex; align-items: center; justify-content: center;
    width: 80px; height: 80px; margin-bottom: 18px; border-radius: 50%;
    background: linear-gradient(135deg, var(--c-primary) 0%, var(--c-primary-dark) 100%);
    box-shadow: 0 8px 22px rgba(0, 75, 162, .3);
}
.process-icon .item-icon { width: auto; height: auto; background: transparent; color: var(--c-white); font-size: 1.75rem; }
.process-icon em {
    position: absolute; top: -4px; right: -6px; display: inline-flex; align-items: center; justify-content: center;
    min-width: 30px; height: 30px; padding: 0 6px; border-radius: 15px;
    background: var(--c-accent); color: var(--c-primary-dark);
    font-size: .75rem; font-style: normal; font-weight: 800;
}
.process-step h3 { margin: 0 0 8px; font-size: 1.125rem; font-weight: 700; color: var(--c-ink); }
.process-step p {margin: 0 auto;max-width: 240px;font-size: 14px;line-height: 1.6;color: var(--c-muted);}

/* ---------- 7. Đối tác ---------- */
.about-partners { padding: clamp(36px, 5vw, 60px) 0 clamp(56px, 7vw, 90px); background: var(--c-bg-soft); }

/* ---------- 8. Kêu gọi ---------- */
.about-cta {
    padding: clamp(56px, 7vw, 90px) 0; text-align: center; color: var(--c-white);
    background: var(--c-ink) url(../images/bg-giaiphap.jpg) center / cover no-repeat;
}
.about-cta h2 {max-width: 760px;margin: 0 auto 14px;font-size: clamp(1.625rem, 3.4vw, 2rem);font-weight: 600;color: var(--c-white);text-transform: capitalize;}
.about-cta p { max-width: 620px; margin: 0 auto 30px; font-size: 1.0625rem; line-height: 1.7; color: rgba(255, 255, 255, .92); }
.about-cta-actions { display: flex; flex-wrap: wrap; justify-content: center; align-items: center; gap: 14px; }
.about-cta-actions .btn-yellow { min-width: 0; padding: 15px 32px; }
.about-cta-phone {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 10px 20px;
    border: 2px solid rgba(255, 255, 255, .55);
    border-radius: var(--radius);
    color: var(--c-white);
    font-size: 1.125rem;
    font-weight: 700;
}
.about-cta-phone:hover { background: var(--c-white); color: var(--c-primary); }

/* ================================================== RESPONSIVE ===== */
@media (max-width: 991.98px) {
    .about-story-grid { grid-template-columns: 1fr; }
    .about-area-grid, .process-list { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .process-step:not(:last-child)::after { display: none; }
    .about-stats-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .stat-item:nth-child(odd) { border-left: 0; }
    .stat-item:nth-child(n + 3) { border-top: 1px solid var(--c-line); }
}
@media (max-width: 575.98px) {
    .about-area-grid, .process-list {/* grid-template-columns: 1fr; */gap: 20px 10px;}
    .about-hero-actions > a { width: 100%; justify-content: center; }
    .stat-item { padding: 22px 10px; }
    .process-step h3{
    font-size: 14px;
    }
}

/* ---- Section riêng dưới .about-areas: nội dung (trái) + hình (phải) — About.aspx.cs RenderVision, khối ID 10 ---- */
.about-vision-section { padding: clamp(40px, 6vw, 72px) 0; background: var(--c-white); }
.about-vision {
    display: grid;
    grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr);
    gap: clamp(28px, 5vw, 30px);
    align-items: start;
}
.about-vision.is-single { grid-template-columns: minmax(0, 1fr); max-width: 860px; margin: 0 auto; }
.about-vision-body { font-size: 1.0625rem; line-height: 1.8; color: var(--c-body); }
.about-vision-body [style*="font-size"] { font-size: inherit !important; }
.about-vision-body h1, .about-vision-body h2, .about-vision-body h3 { font-family: var(--font-display); letter-spacing: 0; color: var(--c-primary); }
/* Tiêu đề đầu bài (thẻ nào cũng vậy) là tiêu đề lớn của section; các tiêu đề sau là tiêu đề nhỏ có thanh vàng. */
.about-vision-body > :first-child:is(h1, h2, h3) {
    margin: 0 0 24px;
    padding: 0 0 14px;
    font-size: clamp(1.5rem, 3vw, 2rem);
    font-weight: 500;
    line-height: 1.25;
    text-transform: uppercase;
    margin-bottom: 0;
    padding-bottom: 0;
}
.about-vision-body > :first-child:is(h1, h2, h3)::before { content: none; }
.about-vision-body h1, .about-vision-body h2, .about-vision-body h3 {
    position: relative; margin: 26px 0 10px; padding-left: 16px;
    font-size: 1.3125rem; font-weight: 700; line-height: 1.3;
}
.about-vision-body h1::before, .about-vision-body h2::before, .about-vision-body h3::before {
    content: ""; position: absolute; left: 0; top: 4px; bottom: 4px; width: 4px; border-radius: 2px; background: var(--c-accent);
}
.about-vision-body p {margin: 0 0 10px;font-size: 15px;}
.about-vision-body ul { list-style: none; margin: 0 0 14px; padding: 0; display: grid; gap: 12px; }
.about-vision-body li { position: relative; padding-left: 30px; }
.about-vision-body li p{margin-bottom: 0;}
.about-vision-body li::before {
    content: "\f058"; font-family: "Font Awesome 6 Free"; font-weight: 900;
    position: absolute; left: 0; top: 3px; color: var(--c-accent-dark);
}
.about-vision-body li strong, .about-vision-body p strong { color: var(--c-ink); }
.about-vision-body > :last-child { margin-bottom: 0; }
/* Hình: bám đầu cột và dính khi cuộn, không lơ lửng giữa khoảng trắng khi nội dung dài */
.about-vision-media { position: sticky; top: 24px; }
.about-vision-media::before { content: ""; position: absolute; inset: 7% -4% -6% 8%; border-radius: 24px; background: var(--c-primary-mist); z-index: 0; }
.about-vision-media img {position: relative;z-index: 1;display: block;width: 100%;height: 500px;border-radius: 20px;box-shadow: var(--shadow-lg);object-fit: cover;}
@media (max-width: 991.98px) {
    .about-vision { grid-template-columns: minmax(0, 1fr); }
    .about-vision-media { position: relative; top: auto; }
    .about-vision-media::before { inset: 6% 0 -4% 4%; }
}