/* ============================================================
   GL BIOCHEM 吉尔生化 — ABOUT PAGE · HERITAGE INSTITUTIONAL
   ============================================================ */

.about-section { padding: 4rem 0; }

/* === INTRO === */
.about-intro {
    display: grid; grid-template-columns: 1fr; gap: 2.5rem;
}
@media (min-width: 768px) { .about-intro { grid-template-columns: 2fr 1fr; } }
.about-intro-text h2 {
    font-size: 1.95rem; font-weight: 600; color: var(--primary-dark); margin-bottom: 0.6rem;
    letter-spacing: 0.005em; font-family: var(--font-display);
}
.about-intro-text h2::after {
    content: ''; display: block; width: 64px; height: 7px;
    background:
        linear-gradient(var(--gold), var(--gold)) top left / 64px 1px no-repeat,
        linear-gradient(var(--gold), var(--gold)) bottom left / 32px 1px no-repeat;
    margin: 12px 0 18px;
}
.about-intro-text p {
    font-size: 14.5px; color: var(--gray-600); line-height: 1.85; margin-bottom: 1rem;
}
.about-intro-stats {
    display: grid; grid-template-columns: 1fr 1fr; gap: 1.25rem;
}
.about-stat {
    text-align: center; padding: 1.5rem; background: var(--white);
    border: 1px solid var(--gray-200); border-radius: var(--radius-sm);
    border-top: 2px solid var(--gold);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-normal);
}
.about-stat:hover { box-shadow: var(--shadow-md); transform: translateY(-2px); }
.about-stat-num { display: block; font-size: 1.9rem; font-weight: 500; color: var(--primary); font-family: var(--font-display); }
.about-stat-label { display: block; font-size: 0.68rem; font-weight: 700; color: var(--gray-500); margin-top: 0.375rem; text-transform: uppercase; letter-spacing: 0.1em; }

/* === CAPABILITIES === */
.capabilities-grid {
    display: grid; grid-template-columns: 1fr; gap: 1.25rem;
}
@media (min-width: 640px) { .capabilities-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1024px) { .capabilities-grid { grid-template-columns: repeat(3, 1fr); } }
.capability-card {
    padding: 2rem; background: var(--white);
    border: 1px solid var(--gray-200); border-radius: var(--radius-sm);
    transition: all var(--transition-normal);
    box-shadow: var(--shadow-sm);
    position: relative; overflow: hidden;
}
.capability-card::before {
    content: ''; position: absolute; top: 0; left: 0; right: 0;
    height: 2px; background: linear-gradient(90deg, var(--gold), var(--gold-light));
    opacity: 0; transition: opacity var(--transition-normal);
}
.capability-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-3px); border-color: var(--gold-hairline); }
.capability-card:hover::before { opacity: 1; }
.capability-icon {
    width: 52px; height: 52px; border-radius: 50%;
    background: var(--primary); color: var(--gold-light);
    box-shadow: 0 0 0 3px var(--white), 0 0 0 4px var(--gold-hairline);
    display: flex; align-items: center; justify-content: center;
    font-size: 1.15rem; margin-bottom: 1.4rem;
    transition: all var(--transition-normal);
}
.capability-card:hover .capability-icon { background: var(--primary-light); box-shadow: 0 0 0 3px var(--white), 0 0 0 4px var(--gold); }
.capability-card h4 { font-size: 1.2rem; font-weight: 600; color: var(--primary-dark); margin-bottom: 0.625rem; font-family: var(--font-display); }
.capability-card p { font-size: 0.875rem; color: var(--gray-600); line-height: 1.75; }

/* === SUBSIDIARIES === */
.subsidiaries-grid {
    display: grid; grid-template-columns: repeat(2, 1fr); gap: 1.25rem;
}
@media (min-width: 768px) { .subsidiaries-grid { grid-template-columns: repeat(4, 1fr); } }
.subsidiary-card {
    padding: 1.5rem; background: var(--white);
    border: 1px solid var(--gray-200); border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
    border-top: 2px solid var(--gold-hairline);
    box-shadow: var(--shadow-sm);
}
.subsidiary-card:hover { border-color: var(--gold); transform: translateY(-2px); box-shadow: var(--shadow-md); }
.subsidiary-card h4 { font-size: 1rem; font-weight: 600; color: var(--primary-dark); margin-bottom: 0.5rem; font-family: var(--font-display); }
.subsidiary-card p { font-size: 0.8125rem; color: var(--gray-500); }
.subsidiary-card i { color: var(--gold-dark); margin-right: 0.25rem; }

/* === INTERNATIONAL OFFICES === */
.intl-offices {
    margin-top: 2.5rem; text-align: center;
}
.intl-offices h4 { font-size: 1.25rem; font-weight: 600; color: var(--primary-dark); margin-bottom: 1.25rem; font-family: var(--font-display); }
.intl-grid {
    display: flex; gap: 1rem; justify-content: center; flex-wrap: wrap;
}
.intl-card {
    display: flex; align-items: center; gap: 0.5rem;
    padding: 0.875rem 1.5rem; background: var(--white);
    border: 1px solid var(--gray-200); border-radius: var(--radius-sm);
    font-size: 13px; font-weight: 600; color: var(--gray-700);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-fast);
    letter-spacing: 0.02em;
}
.intl-card:hover { border-color: var(--gold); box-shadow: var(--shadow-md); }
.intl-flag { font-size: 1.25rem; }

/* === CERTIFICATIONS === */
.cert-grid {
    display: grid; grid-template-columns: repeat(2, 1fr); gap: 1.25rem;
}
@media (min-width: 1024px) { .cert-grid { grid-template-columns: repeat(4, 1fr); } }
.cert-card {
    text-align: center; padding: 2rem 1.5rem;
    background: var(--white); border: 1px solid var(--gray-200);
    border-radius: var(--radius-sm); transition: all var(--transition-normal);
    border-top: 2px solid var(--gold);
    box-shadow: var(--shadow-sm);
}
.cert-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-3px); }
.cert-icon {
    width: 56px; height: 56px; border-radius: 50%;
    background: var(--primary); color: var(--gold-light);
    box-shadow: 0 0 0 3px var(--white), 0 0 0 4px var(--gold-hairline);
    display: flex; align-items: center; justify-content: center;
    font-size: 1.25rem; margin: 0 auto 1.1rem;
    transition: all var(--transition-normal);
}
.cert-card:hover .cert-icon { background: var(--primary-light); box-shadow: 0 0 0 3px var(--white), 0 0 0 4px var(--gold); }
.cert-card h4 { font-size: 1.1rem; font-weight: 600; color: var(--primary-dark); margin-bottom: 0.5rem; font-family: var(--font-display); }
.cert-card p { font-size: 0.8125rem; color: var(--gray-600); line-height: 1.65; }

/* === PAYMENT INFO === */
.payment-info-card {
    display: grid; grid-template-columns: 1fr; gap: 2.5rem;
    padding: 2.5rem; background: var(--white); border: 1px solid var(--gray-300);
    outline: 1px solid var(--gold-hairline); outline-offset: 4px;
    border-radius: var(--radius-sm); box-shadow: var(--shadow-md);
}
@media (min-width: 768px) { .payment-info-card { grid-template-columns: 1fr 1fr; } }
.payment-info-left h3 {
    font-size: 1.5rem; font-weight: 600; color: var(--primary-dark); margin-bottom: 0.875rem;
    font-family: var(--font-display);
}
.payment-info-left p { font-size: 14px; color: var(--gray-600); margin-bottom: 1.25rem; line-height: 1.75; }
.accepted-crypto { display: flex; flex-wrap: wrap; gap: 0.5rem; }
.crypto-tag {
    display: inline-flex; align-items: center; gap: 0.375rem;
    padding: 0.5rem 1rem; background: var(--primary-dark); color: var(--gold-light);
    border: 1px solid rgba(203,173,106,0.35);
    border-radius: var(--radius-sm); font-size: 0.78rem; font-weight: 600;
    font-family: var(--font-mono);
}
.payment-info-right h4 {
    font-size: 1.25rem; font-weight: 600; color: var(--primary-dark); margin-bottom: 1rem;
    font-family: var(--font-display);
}
.payment-info-right ol {
    list-style: none; counter-reset: steps; padding-left: 0;
}
.payment-info-right ol li {
    counter-increment: steps; position: relative;
    padding-left: 2.25rem; margin-bottom: 0.75rem;
    font-size: 14px; color: var(--gray-600); line-height: 1.65;
}
.payment-info-right ol li::before {
    content: counter(steps); position: absolute; left: 0; top: 0;
    width: 24px; height: 24px; border-radius: 50%;
    background: var(--primary); color: var(--gold-light);
    box-shadow: 0 0 0 1px var(--gold-hairline);
    display: flex; align-items: center; justify-content: center;
    font-size: 0.78rem; font-weight: 500; font-family: var(--font-display);
}
.payment-info-right ol li a { color: var(--blue); font-weight: 600; }

/* === RESPONSIVE — MOBILE === */
@media (max-width: 767px) {
    .about-section { padding: 2rem 0; }
    .about-intro { gap: 1.5rem; }
    .about-intro-text h2 { font-size: 1.45rem; }
    .about-intro-text p { font-size: 14px; line-height: 1.75; }
    .about-intro-stats { grid-template-columns: 1fr 1fr; gap: 0.75rem; }
    .about-stat { padding: 1rem; }
    .about-stat-num { font-size: 1.45rem; }
    .about-stat-label { font-size: 0.62rem; }

    .capabilities-grid { gap: 0.75rem; }
    .capability-card { padding: 1.25rem; }
    .capability-icon { width: 44px; height: 44px; font-size: 1rem; margin-bottom: 0.875rem; }
    .capability-card h4 { font-size: 1.02rem; }
    .capability-card p { font-size: 0.8125rem; }

    .subsidiaries-grid { grid-template-columns: 1fr 1fr; gap: 0.75rem; }
    .subsidiary-card { padding: 1rem; }
    .subsidiary-card h4 { font-size: 0.875rem; }
    .subsidiary-card p { font-size: 0.75rem; }

    .intl-offices { margin-top: 1.5rem; }
    .intl-offices h4 { font-size: 1.05rem; }
    .intl-grid { gap: 0.5rem; }
    .intl-card { padding: 0.625rem 1rem; font-size: 0.8125rem; }

    .cert-grid { grid-template-columns: 1fr 1fr; gap: 0.75rem; }
    .cert-card { padding: 1.25rem 1rem; }
    .cert-icon { width: 44px; height: 44px; font-size: 1rem; }
    .cert-card h4 { font-size: 0.95rem; }
    .cert-card p { font-size: 0.75rem; }

    .payment-info-card { padding: 1.25rem; gap: 1.5rem; outline-offset: 3px; }
    .payment-info-left h3 { font-size: 1.2rem; }
    .payment-info-left p { font-size: 14px; }
    .crypto-tag { font-size: 0.72rem; padding: 0.375rem 0.75rem; }
    .payment-info-right h4 { font-size: 1.05rem; }
    .payment-info-right ol li { font-size: 14px; padding-left: 2rem; }
}

/* ===== Mobile Optimisation (Jul 2026) ===== */
/* Certificate / award photo galleries use inline 4- and 3-column grids that
   crush images on phones — stack to 2 columns (needs !important vs inline). */
@media (max-width: 767px) {
    .about-photo-grid { grid-template-columns: repeat(2, 1fr) !important; }
    .about-photo-grid img { height: 120px !important; }
}
@media (max-width: 374px) {
    .about-photo-grid img { height: 100px !important; }
}