.page-title::before { content: ''; position: absolute; top: 0; left: 0; width: 100%; height: 100%; background-color: rgba(0, 0, 0, 0.6); }

/* ========== 第一个 section：Hero（大气版） ========== */
.ab-hero {
    position: relative;
    color: #fff;
    padding: 120px 0 90px;
    background-image: url('/static/images/about-hero-world.png');
    background-size: cover;
    background-position: center;
    overflow: hidden;
}
.ab-hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background: rgba(3, 18, 58, 0.86);
}
.ab-hero::after {
    content: '';
    position: absolute;
    inset: 0;
    background:
        radial-gradient(900px 420px at 70% 24%, rgba(41, 182, 246, 0.24), rgba(0, 0, 0, 0)),
        radial-gradient(820px 380px at 22% 18%, rgba(38, 198, 218, 0.20), rgba(0, 0, 0, 0)),
        linear-gradient(180deg, rgba(0, 0, 0, 0) 0%, rgba(0, 0, 0, 0.10) 60%, rgba(0, 0, 0, 0.22) 100%);
    pointer-events: none;
}
.ab-hero .container { position: relative; z-index: 2; }
.ab-hero h1 {
    font-size: 3.05rem;
    font-weight: 950;
    line-height: 1.15;
    color: #fff;
    margin-bottom: 18px;
    letter-spacing: 0.2px;
}
.ab-hero .subtitle {
    font-size: 1.25rem;
    line-height: 1.75;
    color: rgba(255, 255, 255, 0.92);
    font-weight: 300;
    margin-bottom: 22px;
    max-width: 740px;
}
.ab-badges {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin: 18px 0 28px;
}
.ab-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 7px 12px;
    border-radius: 999px;
    border: 1px solid rgba(255, 255, 255, 0.18);
    background: rgba(255, 255, 255, 0.06);
    backdrop-filter: blur(10px);
    font-size: 13px;
    color: rgba(255, 255, 255, 0.92);
    white-space: nowrap;
}
.ab-badge i.material-symbols-outlined { font-size: 18px; color: #29b6f6; }
.ab-hero-cta {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 12px;
}
.ab-cta-primary {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 12px 22px;
    border-radius: 999px;
    background: #29b6f6;
    color: #fff !important;
    font-weight: 950;
    text-decoration: none;
    transition: transform 0.2s ease, background 0.2s ease;
    border: 0;
}
.ab-cta-primary:hover {
    background: #039be5;
    transform: translateY(-2px);
    color: #fff !important;
}
.ab-cta-secondary {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 12px 22px;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.08);
    color: #fff !important;
    border: 1px solid rgba(255, 255, 255, 0.18);
    text-decoration: none;
    font-weight: 850;
    transition: transform 0.2s ease, background 0.2s ease;
}
.ab-cta-secondary:hover {
    background: rgba(255, 255, 255, 0.14);
    transform: translateY(-2px);
    color: #fff !important;
}
.about-section { padding: 60px 0; }
.about-section.alt { background-color: #f8f9fa; }
.about-section.blue { background-color: #d9ebfd; }
.about-section h2 {
    font-size: 1.75rem;
    font-weight: 700;
    color: #04205F;
    margin-bottom: 20px;
}
.about-section .lead { font-size: 1.1rem; line-height: 1.8; color: #333; margin-bottom: 16px; }
.about-section p { line-height: 1.85; color: #444; margin-bottom: 14px; }
.about-us h2 { font-size: 1.8rem; font-weight: 600; margin-bottom: 10px; }

/* Global map block */
.global-map-wrap {
    position: relative;
    background: linear-gradient(160deg, #0a1628 0%, #04205F 50%, #0b3b6b 100%);
    border-radius: 20px;
    padding: 50px 30px;
    overflow: hidden;
}
.global-map-wrap::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image: radial-gradient(circle at 20% 30%, rgba(41, 182, 246, 0.12) 0%, transparent 50%),
        radial-gradient(circle at 80% 70%, rgba(41, 182, 246, 0.08) 0%, transparent 45%);
    pointer-events: none;
}
.global-map-title {
    text-align: center;
    color: #fff;
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 10px;
}
.global-map-sub {
    text-align: center;
    color: rgba(255, 255, 255, 0.85);
    font-size: 1rem;
    margin-bottom: 30px;
}
#about-world-map {
    width: 100%;
    height: 200px;
    min-height: 200px;
    position: relative;
    z-index: 1;
}
.global-regions {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 24px;
    margin-top: 36px;
    position: relative;
    z-index: 1;
}
.global-region-card {
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: 12px;
    padding: 20px;
    color: #fff;
}
.global-region-card h4 {
    font-size: 1.15rem;
    margin-bottom: 8px;
    color: #29b6f6;
}
.global-region-card p { font-size: 0.95rem; line-height: 1.6; color: rgba(255,255,255,0.9); margin: 0; }

/* Philosophy */
.philosophy-quote {
    font-size: 1.25rem;
    font-weight: 600;
    color: #04205F;
    margin-bottom: 16px;
    line-height: 1.6;
}
.philosophy-en { font-style: italic; color: #666; margin-top: 8px; }

/* Founder section */

.founder-section h2 { margin-bottom: 24px; }
.founder-tagline {
    font-size: 1.2rem;
    font-weight: 600;
    color: #04205F;
    line-height: 1.6;
    margin-bottom: 18px;
    padding-left: 14px;
    border-left: 4px solid #29b6f6;
}
.founder-bio { margin-bottom: 28px; }
.founder-subtitle {
    font-size: 1.2rem;
    font-weight: 600;
    color: #04205F;
    margin: 32px 0 14px;
    padding-bottom: 8px;
    border-bottom: 1px solid rgba(4, 32, 95, 0.15);
}
.founder-subtitle:first-of-type { margin-top: 0; }
.founder-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
    margin: 20px 0 28px;
}
.founder-card {
    background: #fff;
    border-radius: 12px;
    padding: 20px 22px;
    border: 1px solid rgba(4, 32, 95, 0.1);
    box-shadow: 0 2px 12px rgba(4, 32, 95, 0.06);
}
.founder-card h4 {
    font-size: 1.05rem;
    font-weight: 600;
    color: #04205F;
    margin: 0 0 10px;
}
.founder-role {
    font-weight: 400;
    font-size: 0.9rem;
    color: #666;
}
.founder-card p { margin: 0; font-size: 0.98rem; line-height: 1.75; }
.founder-highlights {
    list-style: none;
    padding: 0;
    margin: 16px 0 28px;
}
.founder-highlights li {
    position: relative;
    padding: 12px 0 12px 22px;
    line-height: 1.8;
    color: #444;
    border-bottom: 1px solid rgba(4, 32, 95, 0.08);
}
.founder-highlights li:last-child { border-bottom: 0; }
.founder-highlights li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 20px;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: #29b6f6;
}
.founder-highlights li strong { color: #04205F; }

/* Timeline (发展历程) */
.timeline-section h2 { margin-bottom: 12px; }
.timeline-lead {
    font-size: 1.1rem;
    color: #555;
    margin-bottom: 40px;
    line-height: 1.7;
}
.timeline {
    position: relative;
    padding-left: 0;
}
.timeline::before {
    content: '';
    position: absolute;
    left: 12px;
    top: 8px;
    bottom: 8px;
    width: 2px;
    background: linear-gradient(180deg, #29b6f6 0%, rgba(41, 182, 246, 0.4) 100%);
    border-radius: 2px;
}
.timeline-item {
    position: relative;
    padding-left: 48px;
    padding-bottom: 36px;
}
.timeline-item:last-child { padding-bottom: 8px; }
.timeline-marker {
    position: absolute;
    left: 4px;
    top: 4px;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: #fff;
    border: 3px solid #29b6f6;
    box-shadow: 0 0 0 4px rgba(41, 182, 246, 0.2);
    z-index: 1;
}
.timeline-item:hover .timeline-marker {
    box-shadow: 0 0 0 6px rgba(41, 182, 246, 0.25);
}
.timeline-date {
    position: absolute;
    left: 0;
    top: 0;
    width: 90px;
    font-size: 0.95rem;
    font-weight: 700;
    color: #04205F;
    line-height: 1.3;
}
.timeline-content {
    background: #fff;
    border-radius: 12px;
    padding: 20px 24px;
    border: 1px solid rgba(4, 32, 95, 0.08);
    box-shadow: 0 2px 12px rgba(4, 32, 95, 0.05);
}
.timeline-content h3 {
    font-size: 1.1rem;
    font-weight: 600;
    color: #04205F;
    margin: 0 0 8px;
}
.timeline-tags {
    font-size: 0.9rem;
    color: #29b6f6;
    margin: 0 0 12px;
    font-weight: 500;
}
.timeline-content p:last-child {
    margin: 0;
    line-height: 1.8;
    color: #444;
    font-size: 0.98rem;
}
@media (min-width: 768px) {
    .timeline::before { left: 128px; }
    .timeline-item { padding-left: 0; display: flex; gap: 40px; align-items: flex-start; }
    .timeline-marker { left: 118px; top: 6px; }
    .timeline-date {
        position: static;
        width: 100px;
        flex-shrink: 0;
        text-align: right;
        padding-top: 2px;
        padding-right: 14px;
        box-sizing: border-box;
    }
    .timeline-content { flex: 1; min-width: 0; }
}
@media (max-width: 767px) {
    .timeline::before { left: 12px; }
    .timeline-item {
        padding-left: 44px;
        display: block;
    }
    .timeline-marker { left: 4px; top: 4px; }
    .timeline-date {
        position: static;
        width: auto;
        margin-bottom: 8px;
        font-size: 0.9rem;
    }
}

/* Contact */
.contact-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
}
.contact-card {
    background: #fff;
    border: 1px solid #e8ecf0;
    border-radius: 12px;
    padding: 24px;
    transition: box-shadow 0.25s ease, border-color 0.25s ease;
}
.contact-card:hover { box-shadow: 0 8px 24px rgba(4, 32, 95, 0.08); border-color: #29b6f6; }
.contact-card h4 {
    font-size: 1.1rem;
    color: #04205F;
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 8px;
}
.contact-card h4 .material-symbols-outlined { font-size: 22px; color: #29b6f6; }
.contact-card p, .contact-card a { margin: 0; color: #444; line-height: 1.6; }
.contact-card a { color: #29b6f6; text-decoration: none; }
.contact-card a:hover { text-decoration: underline; }
.contact-cta {
    text-align: center;
    font-size: 1.2rem;
    font-weight: 600;
    color: #04205F;
    margin-bottom: 28px;
}
@media (max-width: 992px) {
    .ab-hero h1 { font-size: 2.25rem; }
    .ab-hero { padding: 105px 0 70px; }
}
@media (max-width: 768px) {
    .ab-hero { padding: 96px 0 56px; }
    .ab-hero h1 { font-size: 2rem; }
    .ab-hero .subtitle { font-size: 1.05rem; }
}