/* ================================
   各內頁共用樣式（header + tabs + placeholder）
   ================================ */

.page-header {
    background: var(--burgundy-900);
    padding: calc(var(--nav-height) + 80px) 0 80px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.page-header::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse at 50% 120%, rgba(212,175,55,0.06) 0%, transparent 50%);
}

.page-tag {
    display: inline-block;
    padding: 6px 16px;
    background: rgba(212,175,55,0.1);
    color: var(--gold-300);
    font-size: 12px;
    font-weight: 500;
    letter-spacing: 3px;
    text-transform: uppercase;
    border-radius: 100px;
    margin-bottom: 20px;
    position: relative;
}

.page-title {
    font-family: var(--font-serif);
    font-size: clamp(32px, 5vw, 52px);
    font-weight: 700;
    color: var(--gold-300);
    letter-spacing: 6px;
    margin-bottom: 16px;
    position: relative;
}

.page-desc {
    font-size: 16px;
    color: rgba(255,255,255,0.55);
    font-weight: 300;
    position: relative;
}

/* 內容導航標籤 */
.content-nav {
    display: flex;
    gap: 8px;
    justify-content: center;
    flex-wrap: wrap;
    padding: 40px 0 48px;
    border-bottom: 1px solid rgba(114,47,55,0.08);
    margin-bottom: 48px;
}

.content-nav-btn {
    padding: 12px 24px;
    font-size: 14px;
    font-weight: 500;
    color: var(--gray-500);
    background: var(--white);
    border: 1px solid rgba(114,47,55,0.1);
    border-radius: 100px;
    transition: all 0.3s ease;
    cursor: pointer;
}

.content-nav-btn:hover {
    color: var(--burgundy-600);
    border-color: var(--burgundy-300);
}

.content-nav-btn.active {
    background: var(--burgundy-600);
    color: var(--white);
    border-color: var(--burgundy-600);
    box-shadow: 0 4px 16px rgba(114,47,55,0.2);
}

/* 內容面板 */
.content-panel {
    display: none;
    animation: fadeIn 0.4s ease;
    padding-bottom: 80px;
    min-height: 400px;
}

.content-panel.active { display: block; }

/* 佔位內容 */
.content-placeholder {
    text-align: center;
    padding: 80px 40px;
    background: var(--white);
    border-radius: 20px;
    border: 2px dashed rgba(114,47,55,0.1);
}

.content-placeholder.small { padding: 48px 40px; }

.placeholder-icon { font-size: 56px; margin-bottom: 20px; opacity: 0.7; }

.content-placeholder h2 {
    font-family: var(--font-serif);
    font-size: 26px;
    color: var(--burgundy-800);
    margin-bottom: 8px;
}

.content-placeholder p {
    color: var(--gray-300);
    font-size: 15px;
}