@import url('https://fonts.googleapis.com/css2?family=Noto+Serif+SC:wght@400;600;700&family=Inter:wght@300;400;500;600&display=swap');

body {
    font-family: 'Inter', sans-serif;
    background-color: #FAFAF8;
    color: #1F2937;
}

.serif {
    font-family: 'Noto Serif SC', serif;
}

.gradient-text {
    background: linear-gradient(135deg, #2563EB 0%, #1E40AF 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.card-hover {
    transition: all 0.3s ease;
}

.card-hover:hover {
    transform: translateY(-4px);
    box-shadow: 0 20px 40px -10px rgba(37, 99, 235, 0.15);
}

.comparison-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
}

@media (max-width: 1024px) {
    .comparison-container {
        grid-template-columns: 1fr;
    }
}

.markdown-body {
    font-size: 0.875rem;
    line-height: 1.6;
}

.markdown-body h3 {
    font-size: 1rem;
    font-weight: 600;
    color: #1E40AF;
    margin-top: 1rem;
    margin-bottom: 0.5rem;
}

.markdown-body h4 {
    font-size: 0.9375rem;
    font-weight: 600;
    color: #374151;
    margin-top: 0.75rem;
    margin-bottom: 0.375rem;
}

.markdown-body ul {
    list-style-type: disc;
    padding-left: 1.25rem;
    margin-bottom: 0.5rem;
}

.markdown-body li {
    margin-bottom: 0.25rem;
}

.markdown-body code {
    background-color: #F3F4F6;
    padding: 0.125rem 0.375rem;
    border-radius: 0.25rem;
    font-family: monospace;
    font-size: 0.8125rem;
}

.fade-in {
    animation: fadeIn 0.8s ease-out;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.tag {
    display: inline-flex;
    align-items: center;
    padding: 0.25rem 0.75rem;
    background-color: #EFF6FF;
    color: #1E40AF;
    border-radius: 9999px;
    font-size: 0.875rem;
    font-weight: 500;
    margin-right: 0.5rem;
    margin-bottom: 0.5rem;
}

.portfolio-screenshot {
    border-radius: 0.75rem;
    border: 1px solid #E5E7EB;
    overflow: hidden;
    background: #F9FAFB;
}

.portfolio-screenshot img {
    width: 100%;
    height: auto;
    display: block;
}

/* 首页移动端子导航横向滚动时隐藏滚动条 */
.scrollbar-hide {
    -ms-overflow-style: none;
    scrollbar-width: none;
}
.scrollbar-hide::-webkit-scrollbar {
    display: none;
}

/* 凡科式右侧悬浮快捷导航（参考：腾讯云开发者社区文章） */
.fk-floating-nav {
    position: fixed;
    right: 10px;
    top: 40%;
    transform: translateY(-50%);
    z-index: 35;
    font-size: 14px;
    color: #243558;
}

.fk-floating-nav-list {
    margin: 0;
    padding: 0;
    list-style: none;
}

.fk-floating-nav-item {
    position: relative;
    margin-bottom: 10px;
}

.fk-floating-nav-item:last-child {
    margin-bottom: 0;
}

/* 仅当光标在图标上（或键盘 focus）时显示文字气泡 */
.fk-floating-nav--labeled .fk-floating-nav-item {
    display: flex;
    flex-direction: row;
    align-items: center;
    justify-content: flex-end;
    margin-bottom: 10px;
}

.fk-floating-nav--labeled .fk-floating-nav-item:last-child {
    margin-bottom: 0;
}

.fk-floating-nav--labeled .fk-floating-nav-label {
    pointer-events: none;
    position: absolute;
    right: calc(100% + 10px);
    top: 50%;
    transform: translateY(-50%);
    display: inline-flex;
    align-items: center;
    min-height: 40px;
    padding: 0 12px 0 14px;
    background: #fff;
    border: 1px solid #e1e6ec;
    border-radius: 5px;
    box-shadow: 0 0 9px 0 rgba(0, 0, 0, 0.08);
    font-size: 14px;
    color: #243558;
    white-space: nowrap;
    line-height: 1.25;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.2s linear, visibility 0.2s linear;
}

.fk-floating-nav--labeled .fk-floating-nav-item:has(.fk-floating-nav-btn:hover) .fk-floating-nav-label,
.fk-floating-nav--labeled .fk-floating-nav-item:has(.fk-floating-nav-btn:focus-visible) .fk-floating-nav-label {
    opacity: 1;
    visibility: visible;
    animation: fk-floating-tip-in 0.28s ease-out 1;
}

.fk-floating-nav--labeled .fk-floating-nav-label .fk-floating-nav-label-arrow {
    position: absolute;
    top: 50%;
    right: -8px;
    margin-top: -6px;
    width: 0;
    height: 0;
    border-top: 6px solid transparent;
    border-bottom: 6px solid transparent;
    border-left: 8px solid #e1e6ec;
}

.fk-floating-nav--labeled .fk-floating-nav-label .fk-floating-nav-label-arrow::after {
    content: "";
    position: absolute;
    top: -5px;
    right: 2px;
    border-top: 5px solid transparent;
    border-bottom: 5px solid transparent;
    border-left: 7px solid #fff;
}

.fk-floating-nav-btn {
    box-sizing: border-box;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 4px;
    background: #fff;
    color: #243558;
    box-shadow: 0 0 9px 0 rgba(0, 0, 0, 0.1);
    border: none;
    cursor: pointer;
    text-decoration: none;
    transition: background-color 0.15s ease, color 0.15s ease, box-shadow 0.15s ease;
}

.fk-floating-nav-btn:hover,
.fk-floating-nav-btn:focus-visible {
    background: #4f7cfc;
    color: #fff;
    outline: none;
}

.fk-floating-nav-icon {
    width: 18px;
    height: 18px;
    flex-shrink: 0;
}

/* 仅未使用固定标签时：悬停显示气泡 */
.fk-floating-nav:not(.fk-floating-nav--labeled) .fk-floating-nav-tip {
    pointer-events: none;
    position: absolute;
    right: calc(100% + 10px);
    top: 50%;
    transform: translateY(-50%);
    white-space: nowrap;
    padding: 0 14px;
    height: 40px;
    line-height: 40px;
    border-radius: 5px;
    background: #fff;
    border: 1px solid #e1e6ec;
    box-shadow: 0 0 9px 0 rgba(0, 0, 0, 0.08);
    font-size: 14px;
    color: #243558;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.2s linear, visibility 0.2s linear;
}

.fk-floating-nav:not(.fk-floating-nav--labeled) .fk-floating-nav-item:hover .fk-floating-nav-tip,
.fk-floating-nav:not(.fk-floating-nav--labeled) .fk-floating-nav-item:focus-within .fk-floating-nav-tip {
    opacity: 1;
    visibility: visible;
    animation: fk-floating-tip-in 0.28s ease-out 1;
}

@keyframes fk-floating-tip-in {
    from {
        opacity: 0.35;
    }
    to {
        opacity: 1;
    }
}

.fk-floating-nav-tip-arrow {
    position: absolute;
    top: 50%;
    right: -8px;
    margin-top: -6px;
    width: 0;
    height: 0;
    border-top: 6px solid transparent;
    border-bottom: 6px solid transparent;
    border-left: 8px solid #e1e6ec;
}

.fk-floating-nav-tip-arrow::after {
    content: "";
    position: absolute;
    top: -5px;
    right: 2px;
    border-top: 5px solid transparent;
    border-bottom: 5px solid transparent;
    border-left: 7px solid #fff;
}

/* 项目页：垂直居中，不滚动、不出现滚动条 */
.fk-floating-nav--project {
    top: 50%;
    transform: translateY(-50%);
}

.fk-floating-nav--project .fk-floating-nav-list {
    overflow: visible;
    max-height: none;
}