/* ==============================================
   联系方式模块 + 关于本站折叠面板
   ============================================== */

/* 关于本站二级折叠展开 */
.about-contact-toggle {
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    margin-bottom: 0;
    padding: 4px 0;
    user-select: none;
    -webkit-tap-highlight-color: transparent;
}
.about-arrow {
    width: 18px;
    height: 18px;
    stroke: var(--text-tertiary);
    transition: transform 0.3s var(--ease-ios);
}
.about-contact-toggle.active .about-arrow {
    transform: rotate(180deg);
}
.about-contact-panel {
    max-height: 0;
    overflow: hidden;
    opacity: 0;
    transform: translateY(-10px);
    transition: max-height 0.4s var(--ease-ios), opacity 0.3s ease, transform 0.4s var(--ease-ios);
}
.about-contact-panel.active {
    max-height: 400px;
    opacity: 1;
    transform: translateY(0);
}

/* 联系方式列表 */
.contact-list { padding-left: 28px; }
.contact-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 6px 0;
}
.contact-label {
    font-size: 13px;
    color: var(--text-tertiary);
    min-width: 50px;
    font-weight: 400;
}
.contact-value {
    position: relative;
    display: inline-block;
    padding: 6px 14px;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-primary);
    background: var(--glass-level-3);
    border: 1px solid var(--glass-border-3);
    border-radius: var(--radius-pill);
    line-height: 1.4;
    cursor: pointer;
    user-select: none;
    -webkit-user-select: none;
    overflow: hidden;
    touch-action: manipulation;
    -webkit-tap-highlight-color: transparent;
}
.contact-value:hover {
    color: #818cf8;
    background: var(--glass-level-2);
    transform: translateY(-1px);
    box-shadow: var(--shadow-soft);
}
.contact-value:active { transform: translateY(0) scale(0.96); opacity: 0.7; }