:root {
    --主色: #0f2744;
    --主色亮: #1a3a5c;
    --副色: #1e4976;
    --強調色: #5eb8ff;
    --強調深: #3d8fd9;
    --成功色: #3dd68c;
    --邊框光: rgba(94, 184, 255, 0.25);
    --文字色: #f0f6fc;
    --文字次: rgba(240, 246, 252, 0.72);
    --卡片底: rgba(15, 39, 68, 0.65);
    --頂欄高: 64px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body.首頁全屏載入 {
    overflow: hidden;
    height: 100vh;
}

body {
    font-family: "PingFang HK", "PingFang TC", "Microsoft JhengHei", "Noto Sans TC", sans-serif;
    background: var(--主色);
    background-image:
        radial-gradient(ellipse 120% 80% at 50% -20%, rgba(62, 142, 222, 0.18), transparent 50%),
        radial-gradient(circle at 20% 60%, rgba(30, 73, 118, 0.35) 0%, transparent 45%),
        radial-gradient(circle at 80% 40%, rgba(15, 39, 68, 0.9) 0%, var(--主色) 70%),
        repeating-linear-gradient(0deg, transparent, transparent 48px, rgba(94, 184, 255, 0.03) 48px, rgba(94, 184, 255, 0.03) 49px),
        repeating-linear-gradient(90deg, transparent, transparent 48px, rgba(94, 184, 255, 0.03) 48px, rgba(94, 184, 255, 0.03) 49px);
    color: var(--文字色);
    min-height: 100vh;
    line-height: 1.65;
}

.頂部導覽 {
    position: sticky;
    top: 0;
    z-index: 100;
    height: var(--頂欄高);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 24px;
    background: rgba(15, 39, 68, 0.85);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--邊框光);
}

.品牌列 {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    color: inherit;
}

.品牌圖 {
    width: 36px;
    height: 36px;
    border-radius: 8px;
    background: linear-gradient(145deg, var(--強調色), var(--副色));
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    font-size: 1rem;
    letter-spacing: -0.02em;
}

.品牌字 {
    font-weight: 700;
    font-size: 1.05rem;
    letter-spacing: 0.04em;
}

.品牌字 small {
    display: block;
    font-size: 0.65rem;
    font-weight: 500;
    opacity: 0.75;
    letter-spacing: 0.12em;
}

.導覽連結 {
    display: flex;
    gap: 8px;
    align-items: center;
    flex-wrap: wrap;
    justify-content: flex-end;
}

.導覽連結 a {
    color: var(--文字次);
    text-decoration: none;
    padding: 8px 14px;
    border-radius: 8px;
    font-size: 0.92rem;
    transition: color 0.2s, background 0.2s;
}

.導覽連結 a:hover {
    color: var(--文字色);
    background: rgba(94, 184, 255, 0.12);
}

.導覽連結 a.主按 {
    background: linear-gradient(135deg, var(--強調深), var(--強調色));
    color: #fff;
    font-weight: 600;
}

.導覽連結 a.主按:hover {
    filter: brightness(1.08);
    color: #fff;
}

.容器 {
    max-width: 1180px;
    margin: 0 auto;
    padding: 0 24px;
}

.主視覺區 {
    padding: 48px 0 56px;
    text-align: center;
    border-bottom: 1px solid var(--邊框光);
}

.認證列 {
    display: inline-flex;
    flex-wrap: wrap;
    gap: 10px;
    justify-content: center;
    margin-bottom: 28px;
}

.認證章 {
    font-size: 0.75rem;
    padding: 6px 14px;
    border-radius: 999px;
    border: 1px solid var(--邊框光);
    background: rgba(94, 184, 255, 0.08);
    color: var(--強調色);
    letter-spacing: 0.06em;
}

.公司標誌 {
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 800;
    letter-spacing: 0.02em;
    margin-bottom: 16px;
    text-shadow: 0 4px 24px rgba(0, 0, 0, 0.35);
}

.主標語 {
    font-size: 1.2rem;
    color: var(--文字次);
    max-width: 640px;
    margin: 0 auto 20px;
    font-weight: 500;
}

.副標語 {
    font-size: 0.95rem;
    color: var(--文字次);
    opacity: 0.9;
}

.服務區域 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 24px;
    padding: 56px 0 48px;
}

.服務卡片 {
    background: var(--卡片底);
    border: 1px solid var(--邊框光);
    border-radius: 16px;
    padding: 32px 28px;
    text-align: left;
    transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s;
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.25);
}

.服務卡片:hover {
    transform: translateY(-4px);
    border-color: rgba(94, 184, 255, 0.45);
    box-shadow: 0 20px 48px rgba(0, 0, 0, 0.35);
}

.卡片圖 {
    width: 56px;
    height: 56px;
    margin-bottom: 20px;
    color: var(--強調色);
}

.服務卡片 h3 {
    font-size: 1.2rem;
    margin-bottom: 12px;
    font-weight: 700;
    color: var(--文字色);
}

.服務卡片 p {
    font-size: 0.95rem;
    color: var(--文字次);
}

.聯絡區域 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
    margin: 40px 0 48px;
}

.聯絡項目 {
    background: var(--卡片底);
    border: 1px solid var(--邊框光);
    border-radius: 16px;
    padding: 28px;
}

.聯絡項目 h4 {
    color: var(--強調色);
    margin-bottom: 16px;
    font-size: 1.05rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 10px;
}

.聯絡項目 p {
    font-size: 0.92rem;
    color: var(--文字次);
    margin-bottom: 8px;
}

.電郵主區 {
    background: rgba(94, 184, 255, 0.1);
    border: 1px solid rgba(94, 184, 255, 0.35);
    border-radius: 12px;
    padding: 16px 18px;
    margin-top: 8px;
}

.電郵主區 a {
    color: var(--強調色);
    font-weight: 600;
    font-size: 1.05rem;
    text-decoration: none;
    word-break: break-all;
}

.電郵主區 a:hover {
    text-decoration: underline;
}

.電郵說明 {
    font-size: 0.82rem !important;
    color: var(--文字次) !important;
    margin-top: 12px !important;
    line-height: 1.55 !important;
}

.狀態指示器 {
    display: inline-block;
    width: 8px;
    height: 8px;
    background: var(--成功色);
    border-radius: 50%;
    margin-right: 8px;
    animation: 脈衝動畫 2s infinite;
}

@keyframes 脈衝動畫 {
    0%, 100% { opacity: 1; box-shadow: 0 0 0 0 rgba(61, 214, 140, 0.5); }
    50% { opacity: 0.85; box-shadow: 0 0 12px 2px rgba(61, 214, 140, 0.25); }
}

.技術規格 {
    padding: 40px 28px;
    background: var(--卡片底);
    border: 1px solid var(--邊框光);
    border-radius: 16px;
    margin-bottom: 48px;
}

.技術規格 > h3 {
    text-align: center;
    color: var(--強調色);
    font-size: 1.35rem;
    margin-bottom: 8px;
    font-weight: 700;
}

.規格副標 {
    text-align: center;
    font-size: 0.88rem;
    color: var(--文字次);
    margin-bottom: 28px;
}

.統計網格 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: 16px;
}

.統計項目 {
    text-align: center;
    padding: 22px 16px;
    background: rgba(0, 0, 0, 0.2);
    border-radius: 12px;
    border: 1px solid rgba(255, 255, 255, 0.06);
}

.統計數字 {
    font-size: 1.65rem;
    font-weight: 800;
    color: var(--成功色);
    margin-bottom: 6px;
    letter-spacing: 0.02em;
}

.頁腳 {
    padding: 48px 0 32px;
    border-top: 1px solid var(--邊框光);
    background: rgba(0, 0, 0, 0.2);
}

.版權聲明 {
    text-align: center;
    padding: 24px;
    border-radius: 12px;
    font-size: 0.78rem;
    line-height: 1.75;
    color: var(--文字次);
}

.版權聲明 a {
    color: var(--強調色);
    text-decoration: none;
}

.版權聲明 a:hover {
    text-decoration: underline;
}

.載入畫面 {
    position: fixed;
    inset: 0;
    background: linear-gradient(165deg, var(--主色) 0%, var(--主色亮) 100%);
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
}

.載入內容 {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 24px;
    padding: 32px;
}

.旋轉器 {
    width: 48px;
    height: 48px;
    border: 3px solid rgba(255, 255, 255, 0.2);
    border-top-color: var(--強調色);
    border-radius: 50%;
    animation: 旋轉動畫 0.85s linear infinite;
}

.載入標題 {
    font-size: 1.15rem;
    font-weight: 600;
    letter-spacing: 0.12em;
    color: var(--文字色);
}

.載入副標 {
    font-size: 0.88rem;
    color: var(--文字次);
    letter-spacing: 0.08em;
}

.載入提示 {
    font-size: 0.8rem;
    color: rgba(240, 246, 252, 0.5);
    margin-top: 4px;
}

.載入點列 {
    display: flex;
    gap: 8px;
    margin-top: 8px;
}

.載入點列 span {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--強調色);
    animation: 點跳動 1.2s ease-in-out infinite;
}

.載入點列 span:nth-child(2) { animation-delay: 0.15s; }
.載入點列 span:nth-child(3) { animation-delay: 0.3s; }

@keyframes 旋轉動畫 {
    to { transform: rotate(360deg); }
}

@keyframes 淡出動畫 {
    to { opacity: 0; visibility: hidden; pointer-events: none; }
}

@keyframes 滑入動畫 {
    from { opacity: 0; transform: translateY(28px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes 點跳動 {
    0%, 100% { opacity: 0.35; transform: scale(0.85); }
    50% { opacity: 1; transform: scale(1); }
}

body.錯誤頁 {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    padding: 24px;
}

.錯誤框 {
    text-align: center;
    padding: 48px 36px;
    max-width: 480px;
    background: var(--卡片底);
    border: 1px solid var(--邊框光);
    border-radius: 16px;
    backdrop-filter: blur(12px);
}

.錯誤碼大 {
    font-size: 4rem;
    font-weight: 800;
    color: var(--強調色);
    margin-bottom: 16px;
    line-height: 1;
}

.錯誤說明 { font-size: 1.1rem; color: var(--文字次); margin-bottom: 12px; }

.錯誤按 {
    display: inline-block;
    margin-top: 24px;
    padding: 12px 28px;
    background: linear-gradient(135deg, var(--強調深), var(--強調色));
    color: #fff;
    text-decoration: none;
    border-radius: 10px;
    font-weight: 600;
}

.錯誤按:hover { filter: brightness(1.06); color: #fff; }

@media (max-width: 768px) {
    .頂部導覽 {
        flex-wrap: wrap;
        height: auto;
        padding: 12px 16px;
        gap: 12px;
    }
    .導覽連結 {
        width: 100%;
        justify-content: center;
    }
    .主視覺區 { padding: 32px 0 40px; }
}