:root {
    /* 亮色主题变量 */
    --primary-color: #0066cc;
    --text-color: #1d1d1f;
    --bg-color: #fbfbfd;
    --card-bg: #ffffff;
    --border-color: #d2d2d7;
    --secondary-text: #86868b;
    --card-shadow: 0 4px 30px rgba(0, 0, 0, 0.05);
    --hover-shadow: 0 8px 40px rgba(0, 0, 0, 0.08);
    --item-bg: rgba(0, 0, 0, 0.02);
    --item-hover-bg: rgba(0, 0, 0, 0.03);
    --notice-bg: rgba(0, 0, 0, 0.05);
}

@media (prefers-color-scheme: dark) {
    :root {
        /* 暗色主题变量 */
        --primary-color: #2997ff;
        --text-color: #f5f5f7;
        --bg-color: #000000;
        --card-bg: #1c1c1e;
        --border-color: #424245;
        --secondary-text: #86868b;
        --card-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
        --hover-shadow: 0 8px 40px rgba(0, 0, 0, 0.4);
        --item-bg: rgba(255, 255, 255, 0.05);
        --item-hover-bg: rgba(255, 255, 255, 0.08);
        --notice-bg: rgba(255, 255, 255, 0.1);
    }
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.47059;
    font-weight: 400;
    letter-spacing: -.022em;
    transition: background-color 0.3s ease, color 0.3s ease;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem;
}

/* 页头样式 */
.header {
    text-align: center;
    margin-bottom: 2rem;
    padding: 2rem 0 3rem;
    position: relative;
}

.header h1 {
    font-size: 3.5rem;
    font-weight: 600;
    margin-bottom: 0.8rem;
    color: var(--text-color);
    letter-spacing: -.003em;
}

.header p {
    font-size: 1.3rem;
    color: var(--secondary-text);
    max-width: 600px;
    margin: 0 auto;
    font-weight: 400;
    opacity: 0.9;
}

.github-link {
    display: inline-flex;
    align-items: center;
    padding: 0.6rem 1.2rem;
    background: var(--card-bg);
    color: var(--text-color);
    border-radius: 2rem;
    font-weight: 500;
    text-decoration: none;
    box-shadow: var(--card-shadow);
    transition: all 0.3s ease;
    border: 1px solid var(--border-color);
}

.github-link:hover {
    transform: translateY(-3px);
    box-shadow: var(--hover-shadow);
}

.github-link svg {
    margin-right: 0.5rem;
}

/* 二维码区域 */
.qr-section {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.qr-card {
    background: var(--card-bg);
    border-radius: 1.2rem;
    padding: 2rem;
    text-align: center;
    box-shadow: var(--card-shadow);
    transition: all 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);
    display: flex;
    flex-direction: column;
    align-items: center;
    animation: cardFloat 1s cubic-bezier(0.16, 1, 0.3, 1) backwards;
    border: 1px solid var(--border-color);
}

.qr-card:nth-child(2) {
    animation-delay: 0.2s;
}

.qr-card:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: var(--hover-shadow);
}

.qr-card-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    background-color: var(--card-bg);
}

.qr-card-content h3 {
    margin-bottom: 1rem;
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--text-color);
}

.qr-card p {
    color: var(--secondary-text);
    margin-top: 1rem;
    font-size: 1rem;
}

.qr-image {
    width: 200px;
    height: 200px;
    object-fit: contain;
    background-color: white;
    padding: 0;
    border-radius: 0;
    -webkit-touch-callout: default;
    -webkit-user-select: auto;
    user-select: auto;
    pointer-events: auto;
}

.qr-image-wrapper {
    background: white;
    padding: 0.8rem;
    border-radius: 1rem;
    box-shadow: var(--card-shadow);
    transition: transform 0.3s ease;
    margin: 1rem 0;
    border: 1px solid var(--border-color);
}

/* 项目展示样式 */
.projects-section {
    margin-bottom: 3rem;
}

.projects-header {
    text-align: center;
    margin-bottom: 2rem;
}

.projects-header h2 {
    font-size: 2.2rem;
    font-weight: 600;
    color: var(--text-color);
    margin-bottom: 0.8rem;
}

.projects-header p {
    font-size: 1.1rem;
    color: var(--secondary-text);
    max-width: 600px;
    margin: 0 auto;
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 1.5rem;
}

.project-card {
    background: var(--card-bg);
    border-radius: 1rem;
    padding: 1.5rem;
    box-shadow: var(--card-shadow);
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
    height: 100%;
    animation: cardFloat 1s cubic-bezier(0.16, 1, 0.3, 1) backwards;
    border: 1px solid var(--border-color);
}

.project-card:nth-child(2) {
    animation-delay: 0.1s;
}

.project-card:nth-child(3) {
    animation-delay: 0.2s;
}

.project-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--hover-shadow);
}

.project-name {
    font-size: 1.4rem;
    font-weight: 600;
    color: var(--text-color);
    margin-bottom: 0.8rem;
}

.project-description {
    color: var(--secondary-text);
    font-size: 1rem;
    line-height: 1.5;
    margin-bottom: 1.2rem;
    flex-grow: 1;
}

.tech-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1.2rem;
}

.tech-tag {
    padding: 0.35rem 0.8rem;
    background-color: var(--item-bg);
    border-radius: 0.4rem;
    font-size: 0.85rem;
    color: var(--secondary-text);
    border: 1px solid var(--border-color);
}

.project-actions {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-top: auto;
    padding-top: 1rem;
    border-top: 1px solid var(--border-color);
}

.project-stat {
    display: inline-flex;
    align-items: center;
}

.github-stats-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.3rem 0.6rem;
    background: rgba(0, 102, 204, 0.1);
    color: var(--primary-color);
    border-radius: 0.3rem;
    font-size: 0.85rem;
    font-weight: 500;
    min-width: 70px;
    border: 1px solid rgba(0, 102, 204, 0.15);
}

.github-stats-icon {
    margin-right: 0.4rem;
    width: 12px;
    height: 12px;
}

.github-stats-count {
    font-weight: 500;
}

.project-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    background: rgba(0, 102, 204, 0.1);
    color: var(--primary-color);
    border-radius: 50%;
    transition: all 0.3s ease;
    border: 1px solid rgba(0, 102, 204, 0.15);
    margin-left: auto;
}

.project-link:hover {
    background: rgba(0, 102, 204, 0.15);
    transform: translateY(-2px);
}

.project-link-icon {
    width: 14px;
    height: 14px;
}

/* 赞赏记录样式 */
.donations-section {
    background: var(--card-bg);
    border-radius: 1.2rem;
    padding: 2rem;
    box-shadow: var(--card-shadow);
    transition: all 0.3s ease;
    border: 1px solid var(--border-color);
}

.donations-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border-color);
}

.donations-header h2 {
    font-size: 1.8rem;
    font-weight: 500;
    letter-spacing: -.003em;
    color: var(--text-color);
}

.update-notice {
    font-size: 0.9rem;
    color: var(--secondary-text);
    padding: 0.6rem 1.2rem;
    background-color: var(--notice-bg);
    border-radius: 1rem;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    animation: noticeSlide 1s cubic-bezier(0.16, 1, 0.3, 1);
    border: 1px solid var(--border-color);
}

.donations-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1.5rem;
}

.donation-item {
    background: var(--item-bg);
    padding: 1.5rem;
    border-radius: 1rem;
    transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    position: relative;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    height: 100%;
    min-height: 180px;
    animation: itemAppear 0.8s cubic-bezier(0.34, 1.56, 0.64, 1) backwards;
    border: 1px solid var(--border-color);
}

.donation-item:nth-child(3n+1) { animation-delay: 0.1s; }
.donation-item:nth-child(3n+2) { animation-delay: 0.2s; }
.donation-item:nth-child(3n+3) { animation-delay: 0.3s; }

.donor-info {
    flex-grow: 1;
    margin-bottom: 1rem;
}

.badge {
    display: inline-block;
    padding: 0.2rem 0.6rem;
    border-radius: 0.8rem;
    font-size: 0.8rem;
    font-weight: 500;
    background-color: rgba(0, 0, 0, 0.03);
    color: var(--secondary-text);
    vertical-align: middle;
    animation: badgePop 0.6s cubic-bezier(0.34, 1.56, 0.64, 1) backwards;
    border: 1px solid var(--border-color);
}

@media (prefers-color-scheme: dark) {
    .badge {
        background-color: rgba(255, 255, 255, 0.06);
    }
}

.item-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: auto;
    padding-top: 1rem;
    border-top: 1px solid var(--border-color);
}

.amount {
    font-size: 1.4rem;
    font-weight: 600;
    color: var(--primary-color);
    animation: amountSlide 0.8s cubic-bezier(0.16, 1, 0.3, 1) backwards;
}

.donation-date {
    position: absolute;
    top: 1.5rem;
    right: 1.5rem;
    font-size: 0.9rem;
    color: var(--secondary-text);
    opacity: 0.8;
}

.donor-name {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-color);
    transition: transform 0.3s ease;
    margin-bottom: 0.8rem;
}

.donation-item:hover .donor-name {
    transform: translateX(4px);
    color: var(--primary-color);
}

.message {
    color: var(--secondary-text);
    font-size: 1rem;
    line-height: 1.5;
    margin-bottom: 1rem;
    font-style: italic;
    transition: opacity 0.3s ease;
}

.donation-item:hover .message {
    opacity: 1;
}

/* 动画效果 */
.animate-fade-in {
    animation: fadeIn 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

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

@keyframes cardFloat {
    0% {
        opacity: 0;
        transform: translateY(40px);
    }
    100% {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes itemAppear {
    0% {
        opacity: 0;
        transform: scale(0.9) translateY(20px);
    }
    100% {
        opacity: 1;
        transform: scale(1) translateY(0);
    }
}

@keyframes noticeSlide {
    0% {
        opacity: 0;
        transform: translateX(20px);
    }
    100% {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes badgePop {
    0% {
        opacity: 0;
        transform: scale(0.8);
    }
    100% {
        opacity: 1;
        transform: scale(1);
    }
}

@keyframes amountSlide {
    0% {
        opacity: 0;
        transform: translateX(20px);
    }
    100% {
        opacity: 1;
        transform: translateX(0);
    }
}

/* 响应式布局 */
@media (max-width: 768px) {
    .header h1 {
        font-size: 2.2rem;
    }

    .header p {
        font-size: 1.1rem;
        padding: 0 1rem;
    }

    .projects-grid, .donations-grid {
        grid-template-columns: 1fr;
    }

    .qr-section {
        grid-template-columns: 1fr;
    }

    .update-notice {
        display: none;
    }

    .donations-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
    }
}