/* =========================================================
   About System 內頁專屬樣式（02-2 服務體系）
   ── 共用 common.css；圖文錯落版（左右輪流的 5 段大塊）
   ========================================================= */

/* ---------- Hero 背景 ---------- */
.about_system .page-hero.hero-fullbleed::before {
    background-image: url("../images/about_us/hero_system.jpg");
}

/* ---------- intro-block 底圖（覆寫 common.css 的預設） ---------- */
.about_system .intro-block {
    background:
        linear-gradient(rgba(255, 255, 255, 0.85), rgba(255, 255, 255, 0.85)),
        url("../images/about_system/intro_block.jpg") center/cover no-repeat,
        var(--color-white);
}

/* ============================================================
   Section 標題群：共用元件 .section-head（見 common.css）
   此頁僅加大標題與下方內容的間距
   ============================================================ */
.about_system .section-head {
    margin-bottom: 88px;
}

/* ============================================================
   五大服務：圖文錯落（左右輪流 5 段大塊）
   ============================================================ */
.about_system .services-block {
    padding: var(--spacing-xl) 0 calc(var(--spacing-xl) * 2);
    background: var(--color-bg-light);
}

.about_system .svc-stack { display: flex; flex-direction: column; gap: 100px; }

.about_system .svc-row {
    display: grid;
    grid-template-columns: 1.05fr 1fr;
    gap: 40px;
    align-items: start;
    position: relative;
}

/* 白底偽元素：上方內縮 50（圖突出 50）、下/左/右延伸到 row 邊（白底包住圖左右下） */
.about_system .svc-row::before {
    content: '';
    position: absolute;
    top: 50px;
    bottom: 0;
    left: 0;
    right: 0;
    background: var(--color-white);
    z-index: 0;
}

.about_system .svc-text,
.about_system .svc-img-wrap {
    position: relative;
    z-index: 1;
}

/* 偶數列：圖左字右 */
.about_system .svc-row.flip { grid-template-columns: 1fr 1.05fr; }
.about_system .svc-row.flip .svc-img-wrap { order: 1; }
.about_system .svc-row.flip .svc-text     { order: 2; }
/* 奇數列：字左圖右 */
.about_system .svc-row:not(.flip) .svc-text     { order: 1; }
.about_system .svc-row:not(.flip) .svc-img-wrap { order: 2; }

.about_system .svc-img-wrap {
    aspect-ratio: 4 / 3;
    overflow: hidden;
    background: var(--color-gray-2);
    /* 圖片縮入白卡：右側留白 56、底部留白 56；上方不留白讓圖突出 */
    width: calc(100% - 56px);
    margin-bottom: 56px;
}

.about_system .svc-img-link {
    display: block;
    width: 100%;
    height: 100%;
    overflow: hidden;
}

.about_system .svc-img-wrap img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform var(--transition-slow);
}

@media (hover: hover) {
    .about_system .svc-row:hover .svc-img-wrap img {
        transform: scale(1.05);
    }
}

/* flip 變體：圖在左欄，留白改在左側 */
.about_system .svc-row.flip .svc-img-wrap {
    margin-left: 56px;
    margin-right: 0;
}
.about_system .svc-img-wrap img {
    width: 100%; height: 100%; object-fit: cover; display: block;
}
.about_system .svc-img-wrap .ph {
    position: absolute; inset: 0;
    display: flex; align-items: center; justify-content: center;
    color: var(--color-gray-1);
    font-family: var(--font-family-english);
    font-size: 0.9rem;
    letter-spacing: 0.2em;
    background: repeating-linear-gradient(45deg, #e8e8e8 0, #e8e8e8 12px, #f0f0f0 12px, #f0f0f0 24px);
}
.about_system .svc-num-bg {
    position: absolute;
    bottom: -8px;
    right: 16px;
    font-family: var(--font-family-numeric);
    font-size: 9rem;
    font-weight: 900;
    color: var(--color-white);
    line-height: 0.7;
    letter-spacing: -0.04em;
    pointer-events: none;
    z-index: 2;
}
.about_system .svc-row.flip .svc-num-bg { right: auto; left: 16px; }

.about_system .svc-text {
    align-self: stretch;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: 50px 44px 0;
}
.about_system .svc-title {
    font-family: var(--font-family-chinese);
    font-size: 2rem;
    font-weight: 700;
    margin: 0 0 24px;
    color: var(--primary-teal);
    line-height: 1.4;
}
.about_system .svc-trio {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 28px;
    padding-bottom: 24px;
    border-bottom: 1px solid var(--color-gray-2);
}
.about_system .svc-trio .word {
    font-family: var(--font-family-chinese);
    font-size: 1rem;
    font-weight: 500;
    color: var(--color-text-secondary);
    letter-spacing: 0.05em;
}
.about_system .svc-trio .sep {
    width: 4px;
    height: 4px;
    border-radius: 50%;
    background: var(--color-gray-1);
    flex-shrink: 0;
}
.about_system .svc-desc {
    font-size: var(--font-size-body);
    line-height: 1.95;
    color: var(--color-text-primary);
    margin: 0 0 36px;
}
.about_system .svc-action { margin-top: 8px; }

/* ============================================================
   RWD（沿用專案斷點：1200 / 900 / 768）
   ============================================================ */
@media (max-width: 1200px) {
    .about_system .svc-row,
    .about_system .svc-row.flip {
        grid-template-columns: 1fr;
        gap: 0;
    }
    .about_system .svc-row::before { display: none; }
    .about_system .svc-row .svc-img-wrap,
    .about_system .svc-row.flip .svc-img-wrap {
        order: 1 !important;
        width: 100%;
        margin: 0;
    }
    .about_system .svc-row .svc-text {
        order: 2 !important;
        background: var(--color-white);
        padding: 32px 28px;
    }
    .about_system .svc-num-bg { font-size: 6rem; bottom: -20px; }
    .about_system .svc-stack { gap: 64px; }
}

@media (max-width: 768px) {
    /* 手機:lead 改以上方分隔線呈現（標題/欄位排版由共用 .section-head 處理） */
    .about_system .section-head .lead {
        border-top: 1px solid var(--color-gray-2);
        padding-top: 16px;
    }
    .about_system .svc-title { font-size: 1.5rem; }
    .about_system .svc-trio { flex-wrap: wrap; }
}