/* 关于兴睿：真实照片、完整产品范围与清晰的合作入口。仅首页引用。 */
#about {
    --about-ink: #24384a;
    --about-muted: #536577;
    --about-blue: #326a9c;
    --about-rule: #dce4ec;
    background: #fff;
}
#about .section-inner { max-width: 1120px; }
#about .about-grid {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    grid-template-areas: "visual intro" "visual details";
    gap: 24px clamp(32px, 5vw, 64px);
    align-items: start;
}
#about .about-grid > * { min-width: 0; }
#about .about-intro { grid-area: intro; }
#about .about-intro h2 {
    margin-bottom: 20px;
    font-size: var(--home-title-size, 48px);
    font-weight: 600;
    line-height: 1.23;
    letter-spacing: -.025em;
    text-wrap: balance;
}
#about .about-lead {
    color: var(--about-muted);
    font-size: 16px;
    line-height: 1.85;
    text-wrap: pretty;
}
#about .about-application { white-space: nowrap; }
#about .about-visual { grid-area: visual; }
#about .about-media { margin: 0; }
#about .about-photo {
    overflow: hidden;
    aspect-ratio: 4 / 3;
    border-radius: 24px;
    background: #edf1f4;
}
#about .about-photo img {
    display: block;
    width: 100%;
    height: 100%;
    object-fit: cover;
}
#about .about-media figcaption {
    margin-top: 12px;
    color: var(--about-muted);
    font-size: 12px;
    line-height: 1.6;
}
#about .about-media.visible img { animation: about-photo-in 620ms cubic-bezier(.16,1,.3,1) both; }
@keyframes about-photo-in {
    from { opacity: .65; transform: scale(1.025); }
    to { opacity: 1; transform: scale(1); }
}
#about .about-stats {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0;
    margin: 24px 0 0;
    padding: 20px 0 0;
    border-top: 1px solid var(--about-rule);
}
#about .about-stats > div { display: flex; flex-direction: column; gap: 6px; }
#about .about-stats > div + div { padding-left: 24px; border-left: 1px solid var(--about-rule); }
#about .about-stat-number {
    order: -1;
    color: var(--about-ink);
    font-size: 36px;
    font-weight: 600;
    line-height: 1.15;
    letter-spacing: -.025em;
}
#about .about-stat-label { color: var(--about-muted); font-size: 13px; line-height: 1.6; }
#about .about-details { grid-area: details; }
#about .about-products-title { color: var(--about-ink); font-size: 15px; font-weight: 600; line-height: 1.6; }
#about .about-product-lines { list-style: none; margin-top: 12px; }
#about .about-product-lines li { padding: 12px 0; border-top: 1px solid var(--about-rule); }
#about .about-product-lines h4 { color: var(--about-ink); font-size: 15px; font-weight: 600; line-height: 1.6; }
#about .about-product-lines p { margin-top: 3px; color: var(--about-muted); font-size: 15px; line-height: 1.75; text-wrap: pretty; }
#about .about-values { display: flex; flex-wrap: wrap; gap: 10px 20px; margin-top: 12px; list-style: none; }
#about .about-value { display: inline-flex; align-items: center; gap: 7px; color: var(--about-ink); font-size: 13px; line-height: 1.6; }
#about .about-value::before {
    content: "";
    width: 8px;
    height: 5px;
    margin-top: -3px;
    border-left: 1.5px solid var(--about-blue);
    border-bottom: 1.5px solid var(--about-blue);
    transform: rotate(-45deg);
}
#about .about-actions { display: flex; align-items: center; flex-wrap: wrap; gap: 8px 20px; margin-top: 24px; }
#about .about-actions a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    min-height: 44px;
    border-radius: 999px;
    color: var(--about-blue);
    font-size: 14px;
    font-weight: 500;
    line-height: 1.5;
    text-decoration: none;
    touch-action: manipulation;
    transition: background-color 160ms ease, transform 160ms cubic-bezier(.23,1,.32,1);
}
#about .about-actions .about-consult { padding: 11px 20px; color: #fff; background: #326a9c; }
#about .about-products-link { padding: 11px 4px; }
#about .about-actions svg { width: 16px; height: 16px; flex: none; }
#about .about-actions a:active { transform: scale(.97); }
#about .about-actions a:focus-visible { outline: 2px solid #0066cc; outline-offset: 4px; transition: none; }
@media (hover: hover) and (pointer: fine) {
    #about .about-consult:hover { background: #265985; }
    #about .about-products-link:hover { text-decoration: underline; }
}
#about .about-support { margin-top: 48px; padding-top: 32px; border-top: 1px solid var(--about-rule); }
#about .about-support-head { display: flex; align-items: baseline; justify-content: space-between; gap: 12px 24px; }
#about .about-support-head h3 { color: var(--about-ink); font-size: 22px; font-weight: 600; line-height: 1.4; letter-spacing: -.02em; }
#about .about-support-head p { color: var(--about-muted); font-size: 14px; line-height: 1.7; }
#about .trust-strip { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 24px; margin-top: 24px; list-style: none; }
#about .trust-item { min-width: 0; }
#about .trust-icon { display: flex; align-items: center; width: 28px; height: 28px; margin-bottom: 12px; color: var(--about-blue); }
#about .trust-icon svg { width: 24px; height: 24px; }
#about .trust-item h4 { color: var(--about-ink); font-size: 15px; font-weight: 600; line-height: 1.6; }
#about .trust-item p { margin-top: 5px; color: var(--about-muted); font-size: 13px; line-height: 1.7; overflow-wrap: anywhere; }
@media (max-width: 1024px) {
    #about .about-grid { grid-template-areas: "intro intro" "visual details"; gap: 28px 32px; }
    #about .about-intro { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 32px; align-items: center; }
    #about .about-intro h2 { margin-bottom: 0; font-size: clamp(30px, 3.8vw, 40px); }
    #about .about-stats > div + div { padding-left: 16px; }
    #about .about-stat-number { font-size: 32px; }
    #about .trust-strip { gap: 16px; }
}
@media (min-width: 769px) and (max-width: 1200px) {
    #about .about-support-head, #about .trust-strip { padding-right: 64px; }
}
@media (max-width: 768px) {
    #about { --section-pad-mobile: 48px; }
    #about .about-grid { grid-template-columns: minmax(0, 1fr); grid-template-areas: "intro" "visual" "details"; gap: 24px; }
    #about .about-intro { display: block; }
    #about .about-intro h2 { margin-bottom: 16px; font-size: clamp(28px, 8.2vw, 34px); }
    #about .about-lead { font-size: 15px; line-height: 1.8; }
    #about .about-photo { aspect-ratio: 16 / 10; border-radius: 18px; }
    #about .about-media figcaption { margin-top: 8px; font-size: 12px; }
    #about .about-stats { padding-top: 0; border-top: 0; padding-bottom: 24px; border-bottom: 1px solid var(--about-rule); }
    #about .about-stats > div + div { padding-left: 20px; }
    #about .about-stat-number { font-size: 30px; }
    #about .about-stat-label { font-size: 12px; }
    #about .about-product-lines { margin-top: 10px; }
    #about .about-product-lines li { padding: 10px 0; }
    #about .about-values { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px 16px; margin-top: 16px; }
    #about .about-actions { margin-top: 20px; gap: 8px 16px; padding-right: 48px; }
    #about .about-support { margin-top: 32px; padding-top: 28px; }
    #about .about-support-head { display: block; }
    #about .about-support-head h3 { font-size: 21px; }
    #about .about-support-head p { margin-top: 8px; }
    #about .trust-strip { grid-template-columns: minmax(0, 1fr); gap: 0; margin-top: 16px; }
    #about .trust-item { display: flex; align-items: flex-start; gap: 16px; padding: 14px 0; }
    #about .trust-item + .trust-item { border-top: 1px solid var(--about-rule); }
    #about .trust-icon { flex: none; margin: 1px 0 0; }
    #about .trust-item p { margin-top: 2px; font-size: 14px; }
}
@media (max-width: 360px) {
    #about .about-stats > div + div { padding-left: 12px; }
    #about .about-stat-number { font-size: 28px; }
    #about .about-actions { gap: 8px 12px; }
    #about .about-actions .about-consult { padding-inline: 16px; }
}
@media (prefers-reduced-motion: reduce) {
    #about .about-media.visible img { animation: none; }
    #about .about-actions a { transition: none; }
    #about .about-actions a:active { transform: none; }
}