/* ========================================
   Theme Starter - 简洁版 CSS
   Clean, minimal, professional
   ======================================== */

/* ===== 基础设置 ===== */
html {
    scroll-behavior: smooth;
}

::selection {
    background-color: rgba(99, 102, 241, 0.2);
    color: inherit;
}

/* ===== 简洁动画 ===== */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-8px); }
}

.animate-fade-in {
    animation: fadeIn 0.6s ease-out;
}

.animate-float {
    animation: float 4s ease-in-out infinite;
}

/* ===== 卡片悬停效果 ===== */
.card-hover {
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card-hover:hover {
    transform: translateY(-4px);
    box-shadow: 0 20px 40px -12px rgba(0, 0, 0, 0.1);
}

/* ===== 按钮效果 ===== */
.btn-primary {
    transition: all 0.2s ease;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px -4px rgba(99, 102, 241, 0.4);
}

/* ===== 渐变文字 ===== */
.gradient-text {
    background: linear-gradient(135deg, #6366f1, #8b5cf6, #a855f7);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* ===== 图片/图标容器 ===== */
.icon-box {
    transition: transform 0.3s ease;
}

.group:hover .icon-box {
    transform: scale(1.05);
}

/* ===== FAQ 手风琴 ===== */
.faq-item.active .faq-icon svg {
    transform: rotate(45deg);
}

.faq-item.active .faq-answer {
    max-height: 500px;
}

/* ===== 暗色模式微调 ===== */
.dark {
    color-scheme: dark;
}