/* ============================================================
   USP BAR v3 - Tối giản, sạch sẽ, trên nền trắng
   ============================================================ */

.uten-usp-section {
    background: #ffffff;
    padding: 80px 24px 70px;
    position: relative;
}

/* Đường kẻ trang trí phía trên */
.uten-usp-section::before {
    content: '';
    position: absolute;
    top: 0; left: 50%;
    transform: translateX(-50%);
    width: 56px; height: 4px;
    background: var(--uten-primary, #287b38);
    border-radius: 0 0 6px 6px;
}

/* Ẩn họa tiết nền cũ */
.uten-usp-bg-deco { display: none; }

/* ── HEADER ── */
.uten-usp-header {
    text-align: center;
    margin-bottom: 52px;
}

.uten-usp-badge {
    display: inline-block;
    padding: 5px 18px;
    border: 1.5px solid var(--uten-primary, #287b38);
    border-radius: 50px;
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 1.5px;
    text-transform: uppercase;
    color: var(--uten-primary, #287b38);
    margin-bottom: 16px;
}

.uten-usp-heading {
    font-size: clamp(1.7rem, 3vw, 2.6rem);
    font-weight: 800;
    line-height: 1.25;
    color: #1a1a1a;
    margin: 0;
}

.uten-usp-heading em {
    font-style: normal;
    color: var(--uten-primary, #287b38);
}

.uten-usp-heading em::after { display: none; }

/* ── LƯỚI 4 THẺ ── */
.uten-usp-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    max-width: 1180px;
    margin: 0 auto;
}

.uten-usp-card {
    background: #fff;
    border: 1.5px solid #ebebeb;
    border-radius: 16px;
    padding: 36px 24px 30px;
    text-align: center;
    transition: border-color .3s ease, box-shadow .3s ease, transform .3s ease;
    opacity: 0;
}
.uten-usp-card.is-visible {
    animation: fadeInUpSmooth 2s ease-out forwards;
}

.uten-usp-card:nth-child(1) { animation-delay: 0.1s; }
.uten-usp-card:nth-child(2) { animation-delay: 0.3s; }
.uten-usp-card:nth-child(3) { animation-delay: 0.5s; }
.uten-usp-card:nth-child(4) { animation-delay: 0.7s; }

.uten-usp-card:hover {
    border-color: var(--uten-primary, #287b38);
    box-shadow: 0 12px 36px rgba(40,123,56,.10);
    transform: translateY(-6px);
}

/* ── ICON ── */
.uten-usp-icon-ring {
    width: 76px; height: 76px;
    border-radius: 50%;
    background: #f0faf3;
    border: 1.5px solid #c8e8d0;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    transition: background .3s ease, border-color .3s ease, transform .3s ease;
}

.uten-usp-card:hover .uten-usp-icon-ring {
    background: var(--uten-primary, #287b38);
    border-color: var(--uten-primary, #287b38);
    transform: rotate(8deg) scale(1.08);
}

.uten-usp-icon-ring svg {
    width: 38px; height: 38px;
    color: var(--uten-primary, #287b38);
    transition: color .3s ease;
}

.uten-usp-card:hover .uten-usp-icon-ring svg {
    color: #fff;
}

/* ── SỐ LIỆU ── */
.uten-usp-stat {
    display: flex;
    flex-direction: column;
    align-items: center;
    margin-bottom: 12px;
}

.uten-usp-num {
    font-size: 2rem;
    font-weight: 900;
    color: var(--uten-primary, #287b38);
    line-height: 1;
    letter-spacing: -0.5px;
}

.uten-usp-num-label {
    font-size: 11px;
    font-weight: 500;
    letter-spacing: 0.4px;
    color: #aaa;
    text-transform: uppercase;
    margin-top: 3px;
}

/* ── TIÊU ĐỀ + MÔ TẢ ── */
.uten-usp-title {
    font-size: 16px;
    font-weight: 700;
    color: #1a1a1a;
    margin: 0 0 8px;
}

.uten-usp-desc {
    font-size: 13.5px;
    line-height: 1.7;
    color: #777;
    margin: 0;
}

/* ── ĐƯỜNG KẺ ── */
.uten-usp-card-line {
    width: 0; height: 2px;
    background: var(--uten-primary, #287b38);
    border-radius: 2px;
    margin: 18px auto 0;
    transition: width .4s ease .1s;
}

.uten-usp-card:hover .uten-usp-card-line { width: 48px; }

/* ── ANIMATION KHI SCROLL ── */
.uten-reveal {
    opacity: 0;
    transform: translateY(-20px);
    transition: opacity 1.2s ease, transform 1.2s ease;
}
.uten-reveal.in-view, .uten-reveal.is-visible { opacity: 1; transform: translateY(0); }

.uten-reveal-card {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 1.2s ease var(--delay,0s),
                transform 1.2s cubic-bezier(.22,1,.36,1) var(--delay,0s);
}
.uten-reveal-card.in-view, .uten-reveal-card.is-visible { opacity: 1; transform: translateY(0); }

@keyframes fadeInUpSmooth {
    from { opacity: 0; transform: translateY(60px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ── RESPONSIVE ── */
@media (max-width: 1024px) {
    .uten-usp-grid { grid-template-columns: repeat(2,1fr); gap: 20px; }
}
@media (max-width: 540px) {
    .uten-usp-section { padding: 56px 16px 48px; }
    .uten-usp-grid { grid-template-columns: 1fr; gap: 14px; }
    .uten-usp-card { padding: 28px 20px; }
}