/* ===== Desktop (mặc định) ===== */
.page-about { color: #FFF3E6; }
.page-about__hero-section { padding: 10px 0 0 0; width: 100%; }
.page-about__hero-image-box { display: block; }
.page-about__hero-image { width: 100%; height: auto; aspect-ratio: 17/5; object-fit: cover; display: block; }
.page-about__hero-content { max-width: 1200px; margin: 0 auto; padding: 20px; display: flex; flex-direction: column; gap: 12px; }
.page-about__main-title { font-weight: 700; font-size: clamp(1.6rem, 4vw, 2.8rem); line-height: 1.4; letter-spacing: 0.5px; color: #FFF3E6; max-width: 900px; margin: 0; }
.page-about__hero-description { font-size: 1.15rem; line-height: 1.75; max-width: 800px; color: #FFF3E6; margin: 0; }
.page-about__hero-actions { display: flex; flex-wrap: wrap; gap: 16px; margin-top: 8px; }
.page-about__btn { display: inline-block; padding: 14px 34px; border-radius: 50px; text-align: center; text-decoration: none; font-weight: 700; font-size: 1rem; border: 1px solid #A84F0C; transition: transform 0.2s ease, box-shadow 0.2s ease; }
.page-about__btn--primary { background: linear-gradient(180deg, #FFA53A 0%, #D96800 100%); color: #0D0E12 !important; border: 1px solid #FFA53A; }
.page-about__btn--secondary { background: transparent; color: #FFF3E6; border: 1px solid #A84F0C; }
.page-about__btn:hover { transform: scale(1.05); box-shadow: 0 0 15px rgba(255,176,77,0.6); }

.page-about__introduction-section { max-width: 1200px; margin: 0 auto; padding: 40px 20px; }
.page-about__intro-title { font-size: clamp(1.5rem, 3vw, 2.2rem); color: #FF8C1A; margin-bottom: 16px; }
.page-about__intro-paragraph { color: #FFF3E6; line-height: 1.8; margin-bottom: 16px; }
.page-about__link-btn { display: inline-block; color: #FFA53A; font-weight: bold; text-decoration: none; border-bottom: 1px dashed #A84F0C; }

.page-about__logo-section { padding: 40px 20px; background: #0D0E12; }
.page-about__logo-section-title { text-align: center; font-size: clamp(1.6rem, 3vw, 2.4rem); color: #FF8C1A; margin-bottom: 32px; }
.page-about__logo-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px 16px; justify-items: center; max-width: 1200px; margin: 0 auto; }
.page-about__logo-item { display: flex; flex-direction: column; align-items: center; gap: 12px; max-width: 280px; }
.page-about__logo-image { width: 100%; aspect-ratio: 2/1; object-fit: contain; border-radius: 8px; }
.page-about__logo-title { font-size: 1.25rem; color: #FFF3E6; margin: 0; text-align: center; }
.page-about__logo-desc { color: #D0DDE7; font-size: 0.95rem; text-align: center; line-height: 1.6; margin: 0; }
.page-about__logo-cta { display: inline-block; padding: 12px 26px; border-radius: 999px; background: linear-gradient(180deg, #FFA53A 0%, #D96800 100%); color: #0D0E12; font-weight: 700; text-decoration: none; text-align: center; }
.page-about__logo-item:nth-child(5) { grid-column: 2; grid-row: 2; }
.page-about__logo-item:nth-child(6) { grid-column: 3; grid-row: 2; }

.page-about__guide-section { padding: 48px 16px; background: #17191F; }
.page-about__guide-inner { max-width: 1000px; margin: 0 auto; }
.page-about__guide-title { text-align: center; color: #FF8C1A; font-size: 2rem; margin-bottom: 12px; }
.page-about__guide-subtitle { text-align: center; color: #FFF3E6; max-width: 700px; margin: 0 auto 32px; line-height: 1.7; }
.page-about__guide-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.page-about__guide-item { display: flex; flex-direction: column; gap: 8px; }
.page-about__guide-figure { margin: 0; }
.page-about__guide-figure img { width: 100%; max-width: 800px; aspect-ratio: 2/1; object-fit: cover; border-radius: 8px; }
.page-about__guide-heading { color: #FFA53A; font-size: 1.25rem; margin: 4px 0; }
.page-about__guide-text { color: #D0DDE7; line-height: 1.7; margin: 0; }

.page-about__faq-item { background: #0D0E12; border: 1px solid #A84F0C; border-radius: 8px; padding: 16px 20px; margin-top: 12px; color: #FFF3E6; }
.page-about__faq-item summary { cursor: pointer; color: #FFA53A; font-weight: 600; }
.page-about__faq-item p { margin-bottom: 0; }

@media (max-width: 1024px) {
    .page-about__logo-grid { grid-template-columns: repeat(3, 1fr); gap: 20px 16px; }
    .page-about__logo-item:nth-child(5) { grid-column: auto; grid-row: auto; }
    .page-about__logo-item:nth-child(6) { grid-column: auto; grid-row: auto; }
    .page-about__guide-grid { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
    .page-about__hero-section { padding-top: 8px; }
    .page-about__hero-image { aspect-ratio: 2/1; }
    .page-about__logo-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
    .page-about__logo-item:nth-child(5), .page-about__logo-item:nth-child(6) { grid-column: auto; grid-row: auto; }
    .page-about__logo-item { max-width: 100%; }
    .page-about__guide-title { font-size: 1.6rem; }
    .page-about__guide-figure { width: 100%; }
    .page-about__guide-figure img { max-width: 100% !important; height: auto !important; }
    .page-about__hero-actions { justify-content: center; width: 100%; }
    .page-about__btn { max-width: 100%; box-sizing: border-box; white-space: normal; word-wrap: break-word; width: auto; }
    .page-about img { max-width: 100% !important; height: auto !important; }
    .page-about__logo-cta { max-width: 100%; box-sizing: border-box; white-space: normal; word-wrap: break-word; width: 100%; }
    .page-about__guide-grid { grid-template-columns: 1fr; }
    .page-about__hero-content { padding: 16px; }
}