/* ====== 导航 ====== */
.glass-nav {
    background-color: rgba(255, 255, 255, 0.9) !important;
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    position: fixed !important;
    top: 0 !important;
    left: 0 !important;
    right: 0 !important;
    z-index: 50 !important;
}

.nav-link {
    color: #374151;
    padding: 0.5rem 0.75rem;
    border-radius: 0.5rem;
    transition: all 0.2s;
    text-decoration: none;
    font-size: 0.95rem;
}

.nav-link:hover {
    color: var(--primary);
    background-color: rgba(0, 122, 255, 0.06);
}

/* ====== 英雄按钮 ====== */
.hero-btn {
    display: inline-block;
    padding: 0.75rem 2rem;
    border-radius: 4px;
    font-weight: 500;
    color: white;
    background: linear-gradient(to right, #06b6d4, #14b8a6);
    transition: all 0.3s;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    white-space: nowrap;
}
.hero-btn:hover {
    background: linear-gradient(to right, #0891b2, #0d9488);
    box-shadow: 0 8px 16px rgba(0,0,0,0.15);
    transform: translateY(-1px);
}
.hero-btn:active { transform: scale(0.95); }

/* ====== 特色卡片 ====== */
.feature-card {
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 24px rgba(0,0,0,0.12);
}

/* ====== 图片悬停放大 ====== */
.hover-zoom { overflow: hidden; }
.hover-zoom img {
    transition: transform 0.5s ease;
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.hover-zoom:hover img { transform: scale(1.08); }

/* ====== 团队卡片 ====== */
.team-card {
    transition: all 0.3s ease;
}
.team-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 24px rgba(0,0,0,0.12);
}

/* ====== 优势卡片 ====== */
.advantage-card {
    text-align: center;
    padding: 1.5rem;
    border-radius: 0.75rem;
    background-color: rgba(255, 255, 255, 0.9);
    box-shadow: 0 4px 6px rgba(0,0,0,0.05);
    transition: all 0.3s ease;
}
.advantage-card:hover {
    box-shadow: 0 12px 24px rgba(0,0,0,0.1);
    transform: translateY(-2px);
}

/* ====== FAQ 折叠面板 ====== */
.faq-item {
    background-color: rgba(255, 255, 255, 0.9);
    border-radius: 0.5rem;
    box-shadow: 0 2px 8px rgba(0,0,0,0.06);
    overflow: hidden;
    transition: box-shadow 0.3s;
}
.faq-item:hover { box-shadow: 0 4px 16px rgba(0,0,0,0.1); }

.faq-question {
    padding: 1.25rem;
    cursor: pointer;
    font-weight: 700;
    font-size: 1.125rem;
    transition: background-color 0.2s;
    list-style: none;
    display: flex;
    align-items: center;
}
.faq-question:hover { background-color: rgba(0,0,0,0.02); }
.faq-question::-webkit-details-marker { display: none; }

.faq-question::before {
    content: '\f107';
    font-family: 'Font Awesome 6 Free';
    font-weight: 900;
    margin-right: 0.75rem;
    color: var(--primary);
    transition: transform 0.3s;
    font-size: 0.875rem;
}

details[open] .faq-question::before { transform: rotate(180deg); }

.faq-answer {
    padding: 0 1.25rem 1.25rem;
    color: #4b5563;
}

/* ====== 指令项 ====== */
.cmd-item {
    padding: 0.5rem;
    border-radius: 0.25rem;
    cursor: pointer;
    transition: background-color 0.2s;
    font-size: 0.9rem;
}
.cmd-item:hover { background-color: #f9fafb; }

/* ====== Toast 通知 ====== */
#command-toast {
    position: fixed;
    top: 1rem;
    left: 50%;
    transform: translateX(-50%);
    background-color: #10b981;
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 0.5rem;
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
    z-index: 100;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s;
    white-space: nowrap;
}
#command-toast.show { opacity: 1; visibility: visible; }

/* ====== 按钮通用 ====== */
.copy-btn {
    padding: 0.5rem 1rem;
    background: linear-gradient(to right, #06b6d4, #14b8a6);
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    white-space: nowrap;
    transition: all 0.2s;
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
}
.copy-btn:hover { opacity: 0.9; }
.copy-btn:active { transform: scale(0.95); }

/* ====== 回到顶部 ====== */
#backToTop {
    transition: opacity 0.3s ease, visibility 0.3s ease, transform 0.3s ease;
}