/* ====== about.html 专属样式 (2026-04-26) ====== */

/* ----- nav active 高亮 ----- */
.nav-links a.active {
    color: var(--blue-400);
    font-weight: 700;
}
.nav-links a.active::after {
    width: 100%;
}

/* ----- About Hero ----- */
.about-hero {
    position: relative;
    height: 70vh;
    min-height: 500px;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    overflow: hidden;
    background: url('assets/images/about/about-gate.jpg') center/cover no-repeat;
    color: white;
}
.about-hero-video {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    z-index: 0;
}
.about-hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg,
        rgba(8, 14, 28, 0.55) 0%,
        rgba(8, 14, 28, 0.35) 50%,
        rgba(8, 14, 28, 0.7) 100%);
    z-index: 1;
}
.about-hero-content {
    position: relative;
    z-index: 2;
    max-width: 900px;
    padding: 0 24px;
}
.about-hero-eyebrow {
    color: rgba(255, 255, 255, 0.75);
    font-size: 13px;
    letter-spacing: 4px;
    text-transform: uppercase;
    margin-bottom: 24px;
    font-weight: 500;
}
.about-hero-title {
    font-size: 64px;
    font-weight: 800;
    color: white;
    line-height: 1.1;
    margin-bottom: 18px;
    letter-spacing: 2px;
}
.about-hero-tagline {
    font-size: 18px;
    color: rgba(255, 255, 255, 0.88);
    font-weight: 300;
    letter-spacing: 1px;
}
.about-hero-scroll {
    position: absolute;
    bottom: 32px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 2;
    color: rgba(255, 255, 255, 0.6);
    font-size: 11px;
    letter-spacing: 2px;
    text-transform: uppercase;
    text-align: center;
}
.about-hero-scroll .scroll-indicator {
    width: 1px;
    height: 30px;
    background: rgba(255, 255, 255, 0.6);
    margin: 8px auto 0;
    animation: scrollPulse 2s ease-in-out infinite;
}
@keyframes scrollPulse {
    0%, 100% { transform: scaleY(1); opacity: 0.6; }
    50% { transform: scaleY(0.5) translateY(8px); opacity: 0.2; }
}

/* ----- Mission ----- */
.about-mission {
    padding: 100px 0;
    background: var(--white);
}
.mission-eyebrow {
    color: var(--blue-500);
    font-size: 13px;
    letter-spacing: 3px;
    font-weight: 600;
    text-transform: uppercase;
    margin-bottom: 16px;
    text-align: center;
}
.mission-headline {
    font-size: 32px;
    font-weight: 700;
    color: var(--navy-900);
    line-height: 1.4;
    text-align: center;
    max-width: 900px;
    margin: 0 auto 48px;
    letter-spacing: 0.5px;
}
.mission-grid {
    max-width: 920px;
    margin: 0 auto;
}
.mission-text p {
    font-size: 16px;
    line-height: 1.9;
    color: var(--gray-700);
    margin-bottom: 18px;
}
.mission-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    justify-content: center;
    margin-top: 32px;
}
.mission-tags span {
    padding: 8px 18px;
    background: var(--blue-50, #eef4ff);
    color: var(--blue-700, #2554a6);
    border: 1px solid var(--blue-200, #b8cdf3);
    border-radius: 20px;
    font-size: 13px;
    font-weight: 500;
}

/* ----- Timeline ----- */
.timeline-section {
    padding: 100px 0;
    background: linear-gradient(180deg, var(--gray-50, #f5f7fa) 0%, white 100%);
}
.timeline {
    position: relative;
    max-width: 900px;
    margin: 60px auto 0;
    padding-left: 0;
}
.timeline::before {
    content: '';
    position: absolute;
    left: 90px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(180deg, var(--blue-300, #6c8fd1), var(--blue-500), var(--blue-300, #6c8fd1));
}
.timeline-item {
    position: relative;
    display: flex;
    gap: 30px;
    padding: 0 0 36px 0;
    align-items: flex-start;
}
.timeline-year {
    flex-shrink: 0;
    width: 100px;
    text-align: right;
    font-size: 28px;
    font-weight: 800;
    color: var(--navy-900);
    line-height: 1.1;
    padding-right: 6px;
    position: relative;
}
.timeline-year::after {
    content: '';
    position: absolute;
    right: -10px;
    top: 8px;
    width: 16px;
    height: 16px;
    background: var(--blue-500);
    border-radius: 50%;
    border: 4px solid white;
    box-shadow: 0 0 0 2px var(--blue-300, #6c8fd1);
    z-index: 1;
}
.timeline-card {
    flex: 1;
    background: white;
    border: 1px solid var(--gray-200);
    border-radius: 12px;
    padding: 22px 26px;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.04);
    transition: all 0.3s;
}
.timeline-card:hover {
    transform: translateX(6px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.08);
    border-color: var(--blue-300, #6c8fd1);
}
.timeline-card h3 {
    font-size: 18px;
    color: var(--navy-900);
    margin-bottom: 8px;
    font-weight: 700;
}
.timeline-card p {
    font-size: 14px;
    color: var(--gray-600, #5a6478);
    line-height: 1.7;
}
.timeline-highlight {
    background: linear-gradient(135deg, #fff8e6 0%, #fffbf2 100%);
    border-color: #f4c768;
}
.timeline-highlight h3 {
    color: #b8761c;
}

/* ----- Honors Wall ----- */
.honors-wall {
    padding: 100px 0;
    background: var(--white);
}
.honors-wall-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    grid-template-rows: 1fr 1fr;
    gap: 16px;
    margin-top: 48px;
    max-width: 1100px;
    margin-left: auto;
    margin-right: auto;
}
.honor-figure {
    margin: 0;
    position: relative;
    overflow: hidden;
    border-radius: 12px;
    background: var(--gray-100);
    aspect-ratio: 4 / 3;
}
.honor-feature {
    grid-row: span 2;
    aspect-ratio: 1 / 1;
}
.honor-figure img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s;
}
.honor-figure:hover img {
    transform: scale(1.04);
}
.honor-figure figcaption {
    position: absolute;
    inset: auto 0 0 0;
    padding: 18px 20px;
    background: linear-gradient(180deg, transparent 0%, rgba(0, 0, 0, 0.85) 100%);
    color: white;
}
.honor-figure figcaption strong {
    display: block;
    font-size: 15px;
    margin-bottom: 4px;
}
.honor-figure figcaption span {
    font-size: 12px;
    opacity: 0.85;
}

/* ----- Factory & Team Photo Wall ----- */
.factory-team {
    padding: 100px 0;
    background: linear-gradient(180deg, white 0%, var(--gray-50, #f5f7fa) 100%);
}
.ft-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    grid-auto-rows: 200px;
    gap: 12px;
    margin-top: 48px;
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
}
.ft-tile {
    margin: 0;
    position: relative;
    overflow: hidden;
    border-radius: 10px;
    background: var(--gray-200);
}
.ft-large {
    grid-column: span 2;
    grid-row: span 2;
}
.ft-tile img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s;
}
.ft-tile:hover img {
    transform: scale(1.05);
}
.ft-tile figcaption {
    position: absolute;
    inset: auto 0 0 0;
    padding: 14px 16px;
    background: linear-gradient(180deg, transparent 0%, rgba(0, 0, 0, 0.78) 100%);
    color: white;
    font-size: 13px;
    font-weight: 500;
    opacity: 0;
    transform: translateY(8px);
    transition: all 0.3s;
}
.ft-tile:hover figcaption {
    opacity: 1;
    transform: translateY(0);
}

/* ----- Product Preview ----- */
.product-preview {
    padding: 100px 0;
    background: var(--white);
}
.pp-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    margin-top: 48px;
}
.pp-card {
    position: relative;
    overflow: hidden;
    border-radius: 12px;
    aspect-ratio: 4 / 3;
    text-decoration: none;
    color: white;
    display: block;
}
.pp-card img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s;
}
.pp-card:hover img {
    transform: scale(1.06);
}
.pp-overlay {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    padding: 24px;
    background: linear-gradient(180deg, transparent 30%, rgba(0, 0, 0, 0.85) 100%);
}
.pp-overlay h3 {
    font-size: 20px;
    margin-bottom: 4px;
    font-weight: 700;
}
.pp-overlay p {
    font-size: 13px;
    opacity: 0.85;
}
.pp-cta {
    margin-top: 36px;
    text-align: center;
    display: flex;
    gap: 12px;
    justify-content: center;
    flex-wrap: wrap;
}

/* ----- 响应式 ----- */
@media (max-width: 1024px) {
    .honors-wall-grid {
        grid-template-columns: 1fr 1fr;
        grid-template-rows: auto;
    }
    .honor-feature {
        grid-row: span 1;
        grid-column: span 2;
    }
    .ft-grid {
        grid-template-columns: 1fr 1fr;
        grid-auto-rows: 180px;
    }
    .ft-large {
        grid-column: span 2;
    }
}

@media (max-width: 768px) {
    .about-hero { height: 60vh; min-height: 400px; }
    .about-hero-title { font-size: 40px; letter-spacing: 1px; }
    .about-hero-tagline { font-size: 15px; }
    .about-hero-eyebrow { font-size: 11px; letter-spacing: 2px; }

    .about-mission { padding: 60px 0; }
    .mission-headline { font-size: 22px; }
    .mission-text p { font-size: 15px; }

    .timeline-section { padding: 60px 0; }
    .timeline { margin-top: 36px; }
    .timeline::before { left: 16px; }
    .timeline-item { gap: 16px; padding-bottom: 24px; }
    .timeline-year {
        width: auto;
        text-align: left;
        font-size: 20px;
        padding-left: 38px;
        padding-right: 0;
        margin-bottom: 8px;
    }
    .timeline-year::after {
        left: 8px;
        right: auto;
        top: 4px;
    }
    .timeline-item {
        flex-direction: column;
    }
    .timeline-card { padding: 16px 18px; }
    .timeline-card h3 { font-size: 16px; }

    .honors-wall { padding: 60px 0; }
    .honors-wall-grid {
        grid-template-columns: 1fr;
        gap: 12px;
    }
    .honor-feature { grid-column: span 1; aspect-ratio: 4/3; }

    .factory-team { padding: 60px 0; }
    .ft-grid {
        grid-template-columns: 1fr 1fr;
        grid-auto-rows: 140px;
        gap: 8px;
    }
    .ft-tile figcaption {
        opacity: 1;
        transform: translateY(0);
        font-size: 11px;
        padding: 8px 10px;
    }

    .product-preview { padding: 60px 0; }
    .pp-grid {
        grid-template-columns: 1fr;
        gap: 12px;
    }
    .pp-card { aspect-ratio: 16/10; }
    .pp-overlay h3 { font-size: 18px; }
}

@media (max-width: 480px) {
    .about-hero-title { font-size: 32px; }
    .mission-headline { font-size: 18px; }
}