/* ===========================================
   关于页 — Scandinavian Clean / Nordic Minimal
   =========================================== */

/* ── Page Header — Full-width subtle band ── */
.about-header {
    padding: calc(60px + var(--space-3xl)) 0 var(--space-xl);
    background: var(--bg-subtle);
    text-align: center;
}

.about-header-inner {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--space-md);
}

.about-company-name {
    font-family: var(--font-heading);
    font-size: clamp(28px, 4.5vw, 44px);
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1.25;
    margin-bottom: 16px;
    letter-spacing: -0.01em;
}

.about-subtitle {
    font-size: 17px;
    color: var(--text-muted);
    line-height: 1.6;
    max-width: 480px;
    margin: 0 auto;
}

/* ── Company Profile — Two-column ── */
.about-profile {
    padding: var(--space-2xl) 0;
}

.about-profile-inner {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--space-md);
}

.about-profile-header {
    margin-bottom: var(--space-lg);
}

.about-profile-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-xl);
    align-items: start;
}

.about-profile-text p {
    font-size: 15px;
    color: var(--text-body);
    line-height: 1.85;
    margin-bottom: var(--space-sm);
}

.about-profile-text p:last-child {
    margin-bottom: 0;
}

.about-profile-metrics {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-sm);
}

.metric-card {
    background: var(--bg-surface);
    border-radius: var(--radius-lg);
    padding: var(--space-md);
    box-shadow: var(--shadow-sm);
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.metric-card .metric-value {
    font-family: var(--font-heading);
    font-size: 28px;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: -0.02em;
    line-height: 1.2;
}

.metric-card .metric-label {
    font-size: 13px;
    color: var(--text-muted);
}

/* ── Core Values — Single column stacked cards ── */
.about-values {
    padding: var(--space-2xl) 0;
    background: var(--bg-subtle);
}

.about-values-inner {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--space-md);
}

.about-values-header {
    margin-bottom: var(--space-xl);
}

.about-values-list {
    display: flex;
    flex-direction: column;
    gap: 48px;
}

.value-card {
    display: flex;
    align-items: flex-start;
    gap: var(--space-md);
}

.value-icon {
    flex-shrink: 0;
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--accent-soft);
    border-radius: var(--radius-lg);
    color: var(--accent);
    font-size: 20px;
}

.value-body {
    flex: 1;
    min-width: 0;
}

.value-body h3 {
    font-family: var(--font-heading);
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.value-body p {
    font-size: 15px;
    color: var(--text-body);
    line-height: 1.8;
    max-width: 640px;
}

/* ── Timeline — Horizontal ── */
.about-timeline {
    padding: var(--space-2xl) 0;
}

.about-timeline-inner {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--space-md);
}

.about-timeline-header {
    margin-bottom: var(--space-xl);
}

.timeline-track {
    display: flex;
    position: relative;
    justify-content: space-between;
    padding-top: 40px;
}

.timeline-line {
    position: absolute;
    top: calc(40px + 24px + 5px);
    left: 24px;
    right: 24px;
    height: 2px;
    background: var(--border);
}

.timeline-node {
    display: flex;
    flex-direction: column;
    align-items: center;
    flex: 1;
    position: relative;
    text-align: center;
}

.timeline-year {
    font-family: var(--font-heading);
    font-size: 20px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 12px;
    letter-spacing: -0.02em;
}

.timeline-dot {
    width: 12px;
    height: 12px;
    background: var(--accent);
    border-radius: 50%;
    border: 3px solid var(--bg-primary);
    box-shadow: 0 0 0 2px var(--accent);
    position: relative;
    z-index: 1;
    margin-bottom: 16px;
    flex-shrink: 0;
}

.timeline-content {
    max-width: 180px;
}

.timeline-node-title {
    font-family: var(--font-heading);
    font-size: 15px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 6px;
}

.timeline-node-desc {
    font-size: 13px;
    color: var(--text-muted);
    line-height: 1.65;
}

/* ── Contact — 3 horizontal cards + person card ── */
.about-contact {
    padding: var(--space-2xl) 0;
    background: var(--bg-subtle);
}

.about-contact-inner {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--space-md);
}

.about-contact-header {
    margin-bottom: var(--space-lg);
}

.contact-cards {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-sm);
    margin-bottom: var(--space-md);
}

.contact-card {
    background: var(--bg-surface);
    border-radius: var(--radius-lg);
    padding: var(--space-md);
    box-shadow: var(--shadow-sm);
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.contact-card-icon {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--accent-soft);
    border-radius: var(--radius-md);
    color: var(--accent);
    font-size: 16px;
}

.contact-card-label {
    font-size: 12px;
    font-weight: 600;
    color: var(--text-muted);
    letter-spacing: 0.06em;
    text-transform: uppercase;
}

.contact-card-value {
    font-size: 14px;
    color: var(--text-body);
    line-height: 1.6;
    word-break: break-all;
}

.contact-card-value a {
    color: var(--text-body);
    transition: color 0.2s ease;
}

.contact-card-value a:hover {
    color: var(--accent);
}

.contact-person-card {
    background: var(--bg-surface);
    border-radius: var(--radius-lg);
    padding: var(--space-sm) var(--space-md);
    box-shadow: var(--shadow-sm);
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    max-width: 320px;
}

.contact-person-icon {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--accent-soft);
    border-radius: 50%;
    color: var(--accent);
    font-size: 16px;
    flex-shrink: 0;
}

.contact-person-label {
    font-size: 12px;
    font-weight: 600;
    color: var(--text-muted);
    letter-spacing: 0.06em;
    text-transform: uppercase;
}

.contact-person-name {
    font-size: 15px;
    font-weight: 600;
    color: var(--text-primary);
    margin-top: 2px;
}

/* ── CTA — Full-width subtle band ── */
.about-cta {
    padding: var(--space-2xl) 0;
    background: var(--bg-subtle);
    text-align: center;
}

.about-cta-inner {
    max-width: 520px;
    margin: 0 auto;
    padding: 0 var(--space-md);
}

.about-cta h2 {
    font-family: var(--font-heading);
    font-size: clamp(24px, 3.5vw, 36px);
    color: var(--text-primary);
    margin-bottom: 12px;
}

.about-cta p {
    font-size: 16px;
    color: var(--text-muted);
    line-height: 1.7;
    margin-bottom: var(--space-lg);
}

.about-cta .cta-buttons {
    display: flex;
    justify-content: center;
    gap: 12px;
}

/* ── Responsive ── */
@media (max-width: 900px) {
    .about-profile-content {
        grid-template-columns: 1fr;
        gap: var(--space-lg);
    }

    .about-profile-metrics {
        max-width: 400px;
    }

    .timeline-track {
        flex-direction: column;
        padding-top: 0;
        gap: var(--space-lg);
    }

    .timeline-line {
        top: 0;
        bottom: 0;
        left: 5px;
        right: auto;
        width: 2px;
        height: auto;
    }

    .timeline-node {
        flex-direction: row;
        text-align: left;
        align-items: flex-start;
        gap: var(--space-sm);
    }

    .timeline-year {
        min-width: 48px;
        margin-bottom: 0;
        text-align: right;
    }

    .timeline-dot {
        margin-bottom: 0;
        margin-top: 6px;
    }

    .timeline-content {
        max-width: none;
        flex: 1;
    }

    .contact-cards {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 600px) {
    .about-header {
        padding: calc(60px + var(--space-xl)) 0 var(--space-lg);
    }

    .about-profile-metrics {
        grid-template-columns: 1fr 1fr;
    }

    .value-card {
        flex-direction: column;
        gap: var(--space-sm);
    }

    .about-values-list {
        gap: var(--space-lg);
    }

    .about-cta .cta-buttons {
        flex-direction: column;
        align-items: center;
    }

    .contact-person-card {
        max-width: none;
    }
}