/* ============================================================
    - 关于我们样式 about.css
   ============================================================ */

.section-eyebrow {
    font-family: var(--serif);
    color: var(--gold);
    letter-spacing: 4px;
    font-size: 13px;
    display: block;
    margin-bottom: 16px;
}

/* ---------- 公司简介 ---------- */
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1.1fr;
    gap: 60px;
    align-items: center;
}
.about-img { position: relative; }
.about-img img { width: 100%; border: 1px solid var(--border); position: relative; z-index: 2; }
.about-img-frame {
    position: absolute;
    top: 18px; left: 18px;
    width: 100%; height: 100%;
    border: 1px solid var(--gold);
    z-index: 1;
}
.about-text h2 {
    font-family: var(--serif);
    color: var(--text-light);
    font-size: 30px;
    font-weight: 600;
    margin-bottom: 22px;
    letter-spacing: 1px;
}
.about-lead { color: var(--text-light); font-size: 16px; margin-bottom: 16px; }
.about-text p { color: var(--text-muted); font-size: 14px; line-height: 1.9; margin-bottom: 16px; }
.about-tags { display: flex; gap: 16px; margin-top: 28px; flex-wrap: wrap; }
.about-tags span {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 9px 18px;
    border: 1px solid var(--border);
    color: var(--gold-light);
    font-size: 13px;
    letter-spacing: 1px;
}
.about-tags i { color: var(--gold); }

/* ---------- 核心数据 ---------- */
.data-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}
.data-item {
    text-align: center;
    padding: 36px 20px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    transition: all .4s ease;
}
.data-item:hover { border-color: var(--gold); transform: translateY(-6px); }
.data-num {
    font-family: var(--serif);
    font-size: 44px;
    font-weight: 700;
    color: var(--gold-light);
    line-height: 1;
}
.data-num sup { font-size: 20px; color: var(--gold); }
.data-label { color: var(--text-muted); font-size: 13px; letter-spacing: 2px; margin-top: 12px; }

/* ---------- 发展历程 ---------- */
.timeline { position: relative; padding: 20px 0; }
.t-line {
    position: absolute;
    left: 50%; top: 0; bottom: 0;
    width: 2px;
    background: linear-gradient(180deg, transparent, var(--gold), transparent);
    transform: translateX(-50%);
}
.t-item {
    position: relative;
    width: 50%;
    padding: 0 40px 40px 0;
    margin-left: 0;
}
.t-item:nth-child(even) {
    margin-left: 50%;
    padding: 0 0 40px 40px;
}
.t-dot {
    position: absolute;
    right: -7px; top: 8px;
    width: 14px; height: 14px;
    background: var(--gold);
    border: 3px solid var(--bg-dark);
    border-radius: 50%;
    z-index: 2;
}
.t-item:nth-child(even) .t-dot { left: -7px; right: auto; }
.t-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    padding: 26px 28px;
    transition: all .35s ease;
}
.t-card:hover { border-color: var(--gold); transform: translateX(6px); }
.t-item:nth-child(even) .t-card:hover { transform: translateX(-6px); }
.t-year {
    font-family: var(--serif);
    color: var(--gold);
    font-size: 26px;
    font-weight: 700;
    display: block;
    margin-bottom: 8px;
}
.t-card h3 {
    font-family: var(--serif);
    color: var(--text-light);
    font-size: 18px;
    margin-bottom: 10px;
}
.t-card p { color: var(--text-muted); font-size: 13px; line-height: 1.8; }

/* ---------- 企业文化 ---------- */
.culture-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 26px;
}
.culture-card {
    text-align: center;
    padding: 44px 30px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    transition: all .4s ease;
}
.culture-card:hover { border-color: var(--gold); transform: translateY(-6px); }
.culture-ic {
    width: 76px; height: 76px;
    margin: 0 auto 24px;
    border: 1px solid var(--gold);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 30px;
    color: var(--gold);
    transition: all .4s ease;
}
.culture-card:hover .culture-ic { background: var(--gold); color: #0c0c0c; }
.culture-card h3 {
    font-family: var(--serif);
    color: var(--text-light);
    font-size: 20px;
    margin-bottom: 14px;
}
.culture-card p { color: var(--text-muted); font-size: 13px; line-height: 1.9; }

/* ---------- 服务承诺 ---------- */
.promise-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 26px;
}
.promise-item {
    display: flex;
    gap: 22px;
    padding: 32px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    transition: all .35s ease;
}
.promise-item:hover { border-color: var(--gold); }
.promise-num {
    font-family: var(--serif);
    font-size: 44px;
    color: rgba(201,169,106,.25);
    font-weight: 700;
    line-height: 1;
    flex-shrink: 0;
}
.promise-item h3 {
    font-family: var(--serif);
    color: var(--text-light);
    font-size: 19px;
    margin-bottom: 10px;
}
.promise-item p { color: var(--text-muted); font-size: 13px; line-height: 1.8; }
.promise-cta {
    text-align: center;
    margin-top: 50px;
    padding: 44px;
    background: linear-gradient(135deg, #1a1a1a, #141414);
    border: 1px solid var(--border);
}
.promise-cta p {
    font-family: var(--serif);
    color: var(--text-light);
    font-size: 22px;
    letter-spacing: 2px;
    margin-bottom: 24px;
}

/* ============================================================
   响应式
   ============================================================ */
@media (max-width: 1024px) {
    .about-grid { grid-template-columns: 1fr; gap: 40px; }
    .data-grid { grid-template-columns: repeat(2, 1fr); }
    .culture-grid { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
    .about-text h2 { font-size: 22px; }
    .data-grid { grid-template-columns: 1fr; }
    .data-num { font-size: 36px; }

    .timeline { padding: 0; }
    .t-line { left: 14px; }
    .t-item, .t-item:nth-child(even) {
        width: 100%;
        margin-left: 0;
        padding: 0 0 30px 40px;
    }
    .t-dot, .t-item:nth-child(even) .t-dot { left: 7px; right: auto; }
    .t-card:hover, .t-item:nth-child(even) .t-card:hover { transform: none; }

    .promise-grid { grid-template-columns: 1fr; }
    .promise-cta { padding: 30px 20px; }
    .promise-cta p { font-size: 17px; }
}

@media (max-width: 480px) {
    .about-img-frame { top: 10px; left: 10px; }
}