/* ========================================
   About Page / 关于公司页面
   ======================================== */

/* Section Common */
.about-section {
    padding: 70px 0;
}

/* About Intro / 公司简介 */
.about-intro {
    background: var(--bg-white);
}

.about-title {
    font-size: 32px;
    font-weight: 700;
    color: var(--text-primary);
    text-align: center;
    margin-bottom: 50px;
    position: relative;
}

.about-title::after {
    content: '';
    position: absolute;
    bottom: -14px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    background: var(--primary);
    border-radius: 2px;
}

.about-intro-content {
    max-width: 900px;
    margin: 0 auto;
}

.about-intro-text {
    margin-bottom: 48px;
}

.about-intro-text p {
    font-size: 16px;
    color: var(--text-secondary);
    line-height: 2;
    margin-bottom: 16px;
    text-indent: 2em;
}

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

/* Stats Cards */
.about-intro-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.stat-card {
    background: var(--bg-white);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 30px 20px;
    text-align: center;
    transition: var(--transition);
}

.stat-card:hover {
    border-color: var(--primary);
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
}

.stat-icon {
    color: var(--primary);
    margin-bottom: 16px;
    display: flex;
    justify-content: center;
}

.stat-number {
    font-size: 36px;
    font-weight: 800;
    color: var(--primary);
    margin-bottom: 8px;
    line-height: 1;
}

.stat-label {
    font-size: 14px;
    color: var(--text-light);
    font-weight: 500;
}

/* Culture / 企业文化 */
.about-culture {
    background: var(--bg-light);
}

.culture-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.culture-card {
    perspective: 1000px;
    height: 280px;
}

.culture-card-inner {
    position: relative;
    width: 100%;
    height: 100%;
    transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
    transform-style: preserve-3d;
}

.culture-card:hover .culture-card-inner {
    transform: rotateY(180deg);
}

.culture-front,
.culture-back {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    backface-visibility: hidden;
    border-radius: var(--radius-lg);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 30px;
}

.culture-front {
    background: var(--bg-white);
    border: 1px solid var(--border-color);
}

.culture-back {
    background: var(--primary);
    color: #fff;
    transform: rotateY(180deg);
    text-align: center;
}

.culture-back h3 {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 16px;
}

.culture-back p {
    font-size: 14px;
    line-height: 1.8;
    opacity: 0.95;
}

.culture-icon-wrap {
    color: var(--primary);
    margin-bottom: 20px;
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: var(--primary-light);
    display: flex;
    align-items: center;
    justify-content: center;
}

.culture-front h3 {
    font-size: 20px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.culture-keyword {
    font-size: 14px;
    color: var(--primary);
    font-weight: 600;
    background: var(--primary-light);
    padding: 4px 16px;
    border-radius: 20px;
}

/* Global Map / 全球布局 */
.about-global {
    background: var(--bg-white);
}

.global-regions {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 24px;
}

.region-item {
    background: var(--bg-light);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 28px 24px;
    transition: var(--transition);
}

.region-item:hover {
    border-color: var(--primary);
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.region-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
    color: var(--primary);
}

.region-header h3 {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-primary);
}

.region-detail {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.8;
}

.region-pin {
    display: inline-block;
    font-size: 12px;
    font-weight: 600;
    color: #fff;
    background: var(--primary);
    padding: 2px 10px;
    border-radius: 4px;
    margin-bottom: 8px;
}

.region-countries {
    font-size: 12px;
    color: var(--text-light);
    margin-top: 6px;
}

/* ========================================
   Milestone / 发展历程（Axera 风格交互时间轴）
   ======================================== */
.about-milestone {
    background: linear-gradient(170deg, #050a1a 0%, #0b1a3d 35%, #071228 70%, #040c1f 100%);
    padding: 80px 0 90px;
    position: relative;
    overflow: hidden;
}
.about-milestone::before {
    content: '';
    position: absolute;
    top: 30%; left: 50%; transform: translate(-50%, -45%);
    width: 900px; height: 500px;
    background: radial-gradient(ellipse, rgba(37,99,235,.12) 0%, rgba(26,74,156,.06) 45%, transparent 70%);
    pointer-events: none;
}
.about-milestone .section-title { color: #fff; position: relative; z-index: 3; }
.milestone-wrapper { max-width: 1100px; margin: 0 auto; position: relative; z-index: 2; }

/* ====== 主展示区：大年份 + 事件卡片 ====== */
.timeline-main {
    position: relative; min-height: 340px;
    display: flex; flex-direction: column; align-items: center; padding-top: 10px;
}
/* 装饰圆弧 */
.timeline-deco-arc {
    position: absolute; top: -20px; left: 50%; transform: translateX(-50%);
    width: 760px; height: 280px; border-radius: 50%;
    border: 2px solid rgba(74,144,255,.12); border-bottom-color: rgba(74,144,255,.28);
    border-top-color: transparent; border-left-color: transparent; border-right-color: transparent;
    pointer-events: none;
}
.timeline-deco-arc::before {
    content: ''; position: absolute; top: 8px; left: 50%; transform: translateX(-50%);
    width: 720px; height: 260px; border-radius: 50%;
    border: 2px dashed rgba(74,144,255,.08); border-bottom-color: rgba(74,144,255,.18);
    border-top-color: transparent; border-left-color: transparent; border-right-color: transparent;
}
.timeline-deco-dots {
    position: absolute; top: -15px; left: 50%; transform: translateX(-50%);
    width: 800px; height: 260px; pointer-events: none; opacity: .5;
}

/* 大年份显示 */
.timeline-year-display {
    font-size: 96px; font-weight: 900; color: #fff; letter-spacing: 6px;
    line-height: 1.05; text-align: center; margin: 16px 0 20px;
    position: relative; transition: all .4s cubic-bezier(.22,.61,.36,1);
    text-shadow: 0 0 60px rgba(74,144,255,.25), 0 8px 32px rgba(0,0,0,.4);
}
.timeline-year-display.year-changing { opacity: 0; transform: translateY(-20px) scale(.95); }

/* 事件卡片列表 */
.timeline-events {
    display: flex; justify-content: center; gap: 24px; flex-wrap: wrap;
    width: 100%; padding: 0 24px; box-sizing: border-box;
}
.tl-event-card {
    background: linear-gradient(145deg, rgba(15,25,55,.85), rgba(8,14,38,.9));
    border: 1px solid rgba(74,144,255,.15); border-radius: 14px;
    padding: 22px 26px; min-width: 240px; max-width: 320px; flex: 1 1 260px;
    backdrop-filter: blur(8px); transition: all .35s ease; cursor: default;
    position: relative; overflow: hidden;
}
.tl-event-card::before {
    content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px;
    background: linear-gradient(90deg, transparent, #2563eb, transparent); opacity: 0;
    transition: opacity .35s ease;
}
.tl-event-card:hover {
    transform: translateY(-4px); border-color: rgba(74,144,255,.35);
    box-shadow: 0 12px 40px rgba(0,0,0,.35), 0 0 24px rgba(37,99,235,.12);
}
.tl-event-card:hover::before { opacity: 1; }
.tl-event-date { font-size: 13px; font-weight: 700; color: #6ea8ff; margin-bottom: 8px; letter-spacing: .5px; }
.tl-event-desc { font-size: 14px; color: rgba(230,236,255,.82); line-height: 1.65; }

/* 奖项高亮 */
.tl-event-card.tl-card-award {
    border-color: rgba(255,215,0,.2);
    background: linear-gradient(145deg, rgba(30,26,8,.88), rgba(18,14,5,.92));
}
.tl-event-card.tl-card-award::before { background: linear-gradient(90deg, transparent, #ffd700, transparent); }
.tl-event-card.tl-card-award:hover {
    border-color: rgba(255,215,0,.4);
    box-shadow: 0 12px 40px rgba(0,0,0,.35), 0 0 24px rgba(255,215,0,.12);
}
.tl-event-card.tl-card-award .tl-event-date { color: #ffd700; }
.tl-event-card.tl-card-award .tl-event-desc { color: rgba(255,245,200,.88); }

.tl-new-tag {
    display: inline-block; margin-left: 8px;
    background: linear-gradient(135deg, #ffd700, #ffa500); color: #8b0000;
    font-size: 11px; font-weight: 800; padding: 2px 8px; border-radius: 4px;
    vertical-align: middle; animation: pulse-gold 2s ease-in-out infinite;
}
@keyframes pulse-gold {
    0%,100%{box-shadow:0 0 0 0 rgba(255,215,0,.35)}
    50%{box-shadow:0 0 0 6px rgba(255,215,0,0)}
}
@keyframes cardIn {
    from{opacity:0;transform:translateY(24px) scale(.97)}
    to{opacity:1;transform:translateY(0) scale(1)}
}
.tl-event-card.card-enter { animation: cardIn .45s cubic-bezier(.22,.61,.36,1) forwards; }

/* ====== 底部年份选择器 ====== */
.timeline-selector { display: flex; align-items: center; gap: 0; margin-top: 44px; user-select: none; width: 100%; }
.tl-nav-btn {
    flex-shrink: 0; width: 40px; height: 40px; border-radius: 50%;
    border: 1.5px solid rgba(74,144,255,.3); background: rgba(15,25,55,.6);
    color: rgba(180,200,255,.7); cursor: pointer;
    display: flex; align-items: center; justify-content: center;
    transition: all .25s ease; backdrop-filter: blur(4px);
}
.tl-nav-btn:hover:not(:disabled) {
    border-color: #2563eb; color: #fff; background: rgba(37,99,235,.2);
    box-shadow: 0 0 16px rgba(37,99,235,.2);
}
.tl-nav-btn:disabled { opacity: .25; cursor: not-allowed; border-color: rgba(74,144,255,.1); }

.tl-track { display: flex; align-items: center; justify-content: space-evenly; position: relative; padding: 0 20px; flex: 1; }
.tl-track::before {
    content: ''; position: absolute; top: 50%; left: 10px; right: 10px;
    height: 2px; background: linear-gradient(90deg, rgba(37,99,235,.15), rgba(74,144,255,.4), rgba(37,99,235,.15));
    transform: translateY(-50%); z-index: 1;
}

/* 年份节点 */
.tl-year-node {
    position: relative; z-index: 2; display: flex; flex-direction: column;
    align-items: center; cursor: pointer; padding: 8px 18px; transition: all .25s ease;
}
.tl-year-dot {
    width: 14px; height: 14px; border-radius: 50%;
    background: rgba(20,35,70,.9); border: 2px solid rgba(74,144,255,.3);
    transition: all .3s cubic-bezier(.34,1.56,.64,1); position: relative;
}
.tl-year-dot::after {
    content: ''; position: absolute; top: 50%; left: 50%; transform: translate(-50%,-50%);
    width: 5px; height: 5px; border-radius: 50%; background: rgba(74,144,255,.5);
    transition: all .3s ease;
}
.tl-year-label {
    margin-top: 8px; font-size: 13px; font-weight: 600;
    color: rgba(180,200,255,.55); letter-spacing: .5px; transition: all .25s ease;
}
/* 激活态 */
.tl-year-node.active .tl-year-dot {
    background: radial-gradient(circle at 35% 35%, #4a90ff, #0d3b8f);
    border-color: rgba(120,180,255,.6);
    box-shadow: 0 0 16px rgba(37,99,235,.5), 0 0 6px rgba(74,144,255,.3);
    transform: scale(1.3);
}
.tl-year-node.active .tl-year-dot::after { background: rgba(255,255,255,.75); width: 6px; height: 6px; }
.tl-year-node.active .tl-year-label { color: #fff; font-size: 15px; text-shadow: 0 0 12px rgba(74,144,255,.4); }
.tl-year-node:hover:not(.active) .tl-year-dot {
    border-color: rgba(74,144,255,.55); box-shadow: 0 0 10px rgba(37,99,235,.25);
}
.tl-year-node:hover:not(.active) .tl-year-label { color: rgba(210,225,255,.78); }

/* --- 荣誉证书展示 --- */
.certificate-gallery {
    display: flex;
    justify-content: center;
    align-items: flex-start;
    gap: 20px;
    margin-top: 40px;
    flex-wrap: wrap;
    padding: 0 16px;
}

.cert-item {
    flex: 0 0 auto;
    width: 180px;
    text-align: center;
    transition: var(--transition);
}

.cert-item:hover {
    transform: translateY(-6px) scale(1.03);
}

.cert-item img {
    width: 180px;
    height: 128px;
    object-fit: contain;
    border-radius: 8px;
    border: 2px solid rgba(255,215,0,0.25);
    box-shadow: 0 4px 20px rgba(0,0,0,0.4), 0 0 12px rgba(37,99,235,0.12);
    transition: var(--transition);
    background: #16162a;
    padding: 6px;
}

.cert-item:hover img {
    border-color: rgba(255,215,0,0.6);
    box-shadow: 0 8px 32px rgba(0,0,0,0.55), 0 0 24px rgba(37,99,235,0.35);
}

.cert-caption {
    margin-top: 10px;
    font-size: 12px;
    color: rgba(255,255,255,0.65);
    line-height: 1.5;
}

/* Team / 团队介绍 */
.about-team {
    background: var(--bg-white);
}

.team-highlights {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.team-highlight-item {
    background: var(--bg-white);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 36px 28px;
    text-align: center;
    transition: var(--transition);
}

.team-highlight-item:hover {
    border-color: var(--primary);
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
}

.team-hl-icon {
    color: var(--primary);
    margin-bottom: 20px;
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: var(--primary-light);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-left: auto;
    margin-right: auto;
}

.team-highlight-item h3 {
    font-size: 20px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 12px;
}

.team-highlight-item p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.8;
}

/* About Page Responsive */
@media (max-width: 992px) {
    .about-intro-stats {
        grid-template-columns: repeat(2, 1fr);
    }

    .culture-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .culture-card {
        height: 260px;
    }

    .culture-card:nth-child(3) {
        grid-column: span 2;
        max-width: 400px;
        justify-self: center;
    }

    .team-highlights {
        grid-template-columns: repeat(2, 1fr);
        gap: 24px;
    }

    .team-highlights .team-highlight-item:nth-child(3) {
        grid-column: span 2;
        max-width: 400px;
        justify-self: center;
    }
}

@media (max-width: 768px) {
    .about-section {
        padding: 50px 0;
    }

    .about-title {
        font-size: 26px;
        margin-bottom: 36px;
    }

    .section-title {
        font-size: 24px;
    }

    .about-intro-text p {
        font-size: 15px;
        text-indent: 1.5em;
    }

    .about-intro-stats {
        grid-template-columns: repeat(2, 1fr);
        gap: 16px;
    }

    .stat-number {
        font-size: 28px;
    }

    .culture-grid {
        grid-template-columns: 1fr;
    }

    .culture-card:nth-child(3) {
        grid-column: span 1;
        max-width: none;
    }

    .culture-card {
        height: 240px;
    }

    .global-regions {
        grid-template-columns: 1fr;
    }

    /* Timeline / Certificate mobile */
    .about-milestone { padding: 50px 0 60px; }

    .timeline-main { min-height: 280px; }
    .timeline-year-display { font-size: 64px; letter-spacing: 4px; margin: 10px 0 14px; }
    .timeline-events { gap: 14px; padding: 0 12px; }
    .tl-event-card { padding: 16px 18px; min-width: 200px; flex: 1 1 200px; }
    .tl-event-desc { font-size: 13px; }

    .timeline-deco-arc { width: 520px; height: 200px; top: -15px; }
    .timeline-deco-arc::before { width: 480px; height: 180px; top: 6px; }
    .timeline-deco-dots { width: 560px; height: 190px; top: -10px; }

    .timeline-selector { margin-top: 30px; }
    .tl-year-node { padding: 6px 12px; }
    .tl-year-label { font-size: 11.5px; margin-top: 6px; }
    .tl-year-node.active .tl-year-label { font-size: 13px; }

    .certificate-gallery {
        gap: 12px;
        margin-top: 24px;
    }

    .cert-item {
        width: 140px;
    }

    .cert-item img {
        width: 140px;
        height: 100px;
    }

    .team-highlights {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .team-highlights .team-highlight-item:nth-child(3) {
        grid-column: span 1;
        max-width: none;
    }
}

@media (max-width: 480px) {
    .about-intro-stats {
        grid-template-columns: repeat(2, 1fr);
    }

    .stat-card {
        padding: 18px 10px;
    }

    .culture-card {
        height: 220px;
    }

    .team-highlight-item {
        padding: 24px 16px;
    }

    .team-hl-icon {
        width: 60px;
        height: 60px;
    }

    .team-hl-icon svg {
        width: 30px;
        height: 30px;
    }

    .timeline-track {
        padding-top: 44px;
    }
    .timeline-track::before {
        top: 44px;
    }
    .timeline-arrow-end {
        top: 44px;
    }
    .tl-year-label {
        margin-top: 20px;
    }

    /* Timeline small */
    .timeline-main { min-height: 240px; }
    .timeline-year-display { font-size: 48px; letter-spacing: 3px; margin: 6px 0 12px; }
    .timeline-events { gap: 10px; padding: 0 8px; }
    .tl-event-card { padding: 14px 16px; min-width: 160px; flex: 1 1 100%; border-radius: 10px; }
    .tl-event-date { font-size: 11.5px; }
    .tl-event-desc { font-size: 12.5px; }

    .timeline-deco-arc { width: 360px; height: 140px; top: -8px; display: none; }
    .timeline-deco-dots { display: none; }

    .timeline-selector { margin-top: 24px; gap: 0; }
    .tl-nav-btn { width: 32px; height: 32px; }
    .tl-year-node { padding: 4px 8px; }
    .tl-year-label { font-size: 10.5px; margin-top: 5px; }

    .certificate-gallery {
        gap: 10px;
    }
    .cert-item {
        width: 120px;
    }
    .cert-item img {
        width: 120px;
        height: 88px;
    }
    .cert-caption {
        font-size: 10.5px;
    }
}