/* 無效關鍵影格與幽靈動效 */
@keyframes _ct_phantom_pulse_j1 {
    0% { transform: scale(1); opacity: 0; }
    50% { transform: scale(1.02); opacity: 0; }
    100% { transform: scale(1); opacity: 0; }
}

._ct_svg_ghost {
    animation: _ct_phantom_pulse_j1 12s infinite ease-in-out;
    position: absolute;
    top: -9999px;
    left: -9999px;
}

/* 居中暗色對稱風格基底 */
._ct_body_w3 {
    background-color: #0d1117;
    color: #c9d1d9;
}

/* 居中頂部導航 */
._ct_nav_center {
    background: #161b22;
    border-bottom: 1px solid #30363d;
    padding: 16px 0;
}

._ct_nav_inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

._ct_logo_box {
    font-size: 1.15rem;
    font-weight: 800;
    color: #58a6ff;
    cursor: pointer;
    letter-spacing: -0.01em;
}

._ct_nav_links {
    display: flex;
    gap: 20px;
}

._ct_nav_a {
    color: #8b949e;
    text-decoration: none;
    font-size: 0.88rem;
    font-weight: 600;
    transition: color 0.2s;
}

._ct_nav_a:hover {
    color: #58a6ff;
}

/* 居中 Hero 區塊 */
._ct_hero_sec {
    padding: 60px 0 40px;
    text-align: center;
    background: radial-gradient(circle at top, rgba(88, 166, 255, 0.1) 0%, transparent 70%);
}

._ct_badge_pill {
    display: inline-block;
    padding: 4px 14px;
    background: rgba(88, 166, 255, 0.12);
    border: 1px solid rgba(88, 166, 255, 0.3);
    color: #58a6ff;
    font-size: 0.75rem;
    font-weight: 800;
    border-radius: 20px;
    margin-bottom: 18px;
    letter-spacing: 0.05em;
}

._ct_h1_title {
    font-size: 2.25rem;
    font-weight: 900;
    color: #ffffff;
    margin: 0 0 16px 0;
    line-height: 1.25;
}

._ct_desc_p {
    color: #8b949e;
    font-size: 1rem;
    margin-bottom: 28px;
}

/* 居中搜尋框 */
._ct_srch_form {
    display: flex;
    max-width: 520px;
    margin: 0 auto 24px;
    gap: 8px;
}

._ct_srch_ipt {
    flex: 1;
    background: #161b22;
    border: 1px solid #30363d;
    border-radius: 6px;
    padding: 10px 16px;
    color: #f0f6fc;
    font-size: 0.9rem;
    text-align: center;
}

._ct_srch_btn {
    background: #238636;
    color: #ffffff;
    border: none;
    border-radius: 6px;
    padding: 10px 22px;
    font-weight: 800;
    font-size: 0.88rem;
    cursor: pointer;
    transition: background 0.2s;
}

._ct_srch_btn:hover {
    background: #2ea043;
}

._ct_cta_box {
    margin-top: 10px;
}

._ct_btn_main {
    display: inline-block;
    padding: 12px 36px;
    background: #1f6beb;
    color: #ffffff;
    text-decoration: none;
    font-weight: 800;
    border-radius: 6px;
    font-size: 0.92rem;
    box-shadow: 0 4px 15px rgba(31, 107, 235, 0.3);
    transition: transform 0.2s, background 0.2s;
}

._ct_btn_main:hover {
    transform: translateY(-2px);
    background: #388bfd;
}

/* 居中網格卡片 */
._ct_main_content {
    margin: 40px auto 60px;
}

._ct_grid_box {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 22px;
    justify-content: center;
}

._ct_card_item {
    background: #161b22;
    border: 1px solid #30363d;
    border-radius: 8px;
    padding: 24px;
    text-align: left;
    cursor: pointer;
    transition: border-color 0.2s, transform 0.2s, box-shadow 0.2s;
}

._ct_card_item:hover {
    border-color: #58a6ff;
    transform: translateY(-4px);
    box-shadow: 0 8px 20px rgba(88, 166, 255, 0.15);
}

._ct_card_hdr {
    margin-bottom: 12px;
}

._ct_card_badge {
    font-size: 0.72rem;
    font-weight: 800;
    color: #58a6ff;
    background: rgba(88, 166, 255, 0.1);
    padding: 2px 8px;
    border-radius: 4px;
    display: inline-block;
    margin-bottom: 8px;
}

._ct_h3_title {
    font-size: 1.18rem;
    color: #f0f6fc;
    margin: 0;
    line-height: 1.35;
}

._ct_card_body {
    color: #8b949e;
    font-size: 0.92rem;
    line-height: 1.65;
}

._ct_match_tag {
    color: #58a6ff;
    font-weight: 800;
}

/* 居中 FAQ */
._ct_faq_sec {
    margin: 50px auto;
    text-align: left;
}

._ct_faq_h4 {
    color: #ffffff;
    font-size: 1.25rem;
    margin-bottom: 20px;
    border-left: 4px solid #58a6ff;
    padding-left: 12px;
}

._ct_faq_item {
    background: #161b22;
    border: 1px solid #30363d;
    border-radius: 8px;
    padding: 20px;
    margin-bottom: 14px;
    cursor: pointer;
}

/* Footer Zone */
._ct_ft_zone {
    background: #010409;
    border-top: 1px solid #30363d;
    padding: 40px 0 25px;
}

._ct_link_matrix {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 14px;
}

._ct_lk_item {
    color: #8b949e;
    text-decoration: none;
    font-size: 0.86rem;
}

._ct_lk_item:hover {
    color: #58a6ff;
}