style.css

/* Import Google Fonts */
@import url('https://gstatic.aby.pub/css2?family=Noto+Sans+SC:wght@400;500;700&display=swap');

/* --- M3 Design Tokens --- */
:root {
    /* Color Palette (Light Theme) */
    --md-sys-color-primary: #0061a4;
    --md-sys-color-on-primary: #ffffff;
    --md-sys-color-primary-container: #d1e4ff;
    --md-sys-color-on-primary-container: #001d36;
    --md-sys-color-secondary: #535f70;
    --md-sys-color-on-secondary: #ffffff;
    --md-sys-color-secondary-container: #d7e3f7;
    --md-sys-color-on-secondary-container: #101c2b;
    --md-sys-color-tertiary: #6b5778;
    --md-sys-color-on-tertiary: #ffffff;
    --md-sys-color-tertiary-container: #f2daff;
    --md-sys-color-on-tertiary-container: #251431;
    --md-sys-color-error: #ba1a1a;
    --md-sys-color-on-error: #ffffff;
    --md-sys-color-error-container: #ffdad6;
    --md-sys-color-on-error-container: #410002;
    --md-sys-color-background: #fdfcff;
    --md-sys-color-on-background: #1a1c1e;
    --md-sys-color-surface: #fdfcff;
    --md-sys-color-on-surface: #1a1c1e;
    --md-sys-color-surface-variant: #dfe3eb;
    --md-sys-color-on-surface-variant: #42474e;
    --md-sys-color-outline: #73777f;
    --md-sys-color-outline-variant: #c2c7cf;
    --md-sys-color-shadow: #000000;
    --md-sys-color-surface-container-lowest: #ffffff;
    --md-sys-color-surface-container-low: #f7f9fc;
    --md-sys-color-surface-container: #f1f4f7;
    --md-sys-color-surface-container-high: #ebeef1;
    --md-sys-color-surface-container-highest: #e6e8eb;

    /* Typography */
    --md-sys-typescale-font-family: 'Noto Sans SC', sans-serif;
    --md-sys-typescale-display-large-size: 3.5625rem;
    --md-sys-typescale-display-medium-size: 2.8125rem;
    --md-sys-typescale-headline-large-size: 2rem;
    --md-sys-typescale-headline-medium-size: 1.75rem;
    --md-sys-typescale-title-large-size: 1.375rem;
    --md-sys-typescale-title-medium-size: 1rem;
    --md-sys-typescale-label-large-size: 0.875rem;
    --md-sys-typescale-body-large-size: 1rem;
    --md-sys-typescale-body-medium-size: 0.875rem;

    /* Transitions */
    --transition-duration: 0.3s;
    --transition-timing: ease-in-out;
}

html.dark {
    /* Color Palette (Dark Theme) */
    --md-sys-color-primary: #9ecaff;
    --md-sys-color-on-primary: #003258;
    --md-sys-color-primary-container: #00497d;
    --md-sys-color-on-primary-container: #d1e4ff;
    --md-sys-color-secondary: #bac7db;
    --md-sys-color-on-secondary: #253140;
    --md-sys-color-secondary-container: #3b4858;
    --md-sys-color-on-secondary-container: #d7e3f7;
    --md-sys-color-tertiary: #d6bee4;
    --md-sys-color-on-tertiary: #3b2948;
    --md-sys-color-tertiary-container: #523f5f;
    --md-sys-color-on-tertiary-container: #f2daff;
    --md-sys-color-error: #ffb4ab;
    --md-sys-color-on-error: #690005;
    --md-sys-color-error-container: #93000a;
    --md-sys-color-on-error-container: #ffdad6;
    --md-sys-color-background: #1a1c1e;
    --md-sys-color-on-background: #e2e2e6;
    --md-sys-color-surface: #1a1c1e;
    --md-sys-color-on-surface: #e2e2e6;
    --md-sys-color-surface-variant: #42474e;
    --md-sys-color-on-surface-variant: #c2c7cf;
    --md-sys-color-outline: #8c9199;
    --md-sys-color-outline-variant: #42474e;
    --md-sys-color-shadow: #000000;
    --md-sys-color-surface-container-lowest: #141619;
    --md-sys-color-surface-container-low: #1a1c1e;
    --md-sys-color-surface-container: #1e2022;
    --md-sys-color-surface-container-high: #282b2d;
    --md-sys-color-surface-container-highest: #333638;
}

/* --- Base & Reset --- */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--md-sys-typescale-font-family);
    background-color: var(--md-sys-color-background);
    color: var(--md-sys-color-on-background);
    transition: background-color var(--transition-duration) var(--transition-timing), color var(--transition-duration) var(--transition-timing);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

a {
    color: inherit;
    text-decoration: none;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* --- Layout --- */
.container {
    max-width: 1152px; /* Corresponds to max-w-6xl */
    margin-left: auto;
    margin-right: auto;
    padding-left: 1.5rem;
    padding-right: 1.5rem;
}
@media (max-width: 640px) {
    .container {
        padding-left: 1rem;
        padding-right: 1rem;
    }
}

.grid-3-col {
    display: grid;
    grid-template-columns: repeat(1, 1fr);
    gap: 1.5rem;
}
@media (min-width: 768px) {
    .grid-3-col { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 1024px) {
    .grid-3-col { grid-template-columns: repeat(3, 1fr); }
}

.grid-4-col {
    display: grid;
    grid-template-columns: repeat(1, 1fr);
    gap: 1.5rem;
}
@media (min-width: 640px) {
    .grid-4-col { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 768px) {
    .grid-4-col { grid-template-columns: repeat(3, 1fr); }
}
@media (min-width: 1024px) {
    .grid-4-col { grid-template-columns: repeat(4, 1fr); }
}

.divider {
    border-top: 1px solid var(--md-sys-color-outline-variant);
    margin-block: 0.5rem;
}

/* --- Typography Classes --- */
.typescale-display-large { font-size: var(--md-sys-typescale-display-large-size); font-weight: 400; line-height: 4rem; }
.typescale-display-medium {
    font-size: var(--md-sys-typescale-display-medium-size);
    font-weight: 400;
    line-height: 3.25rem;
    margin-left: 1rem;
    margin-right: 1rem;
    word-break: break-word;
}
.typescale-headline-large { font-size: var(--md-sys-typescale-headline-large-size); font-weight: 400; line-height: 2.5rem; }
.typescale-headline-medium { font-size: var(--md-sys-typescale-headline-medium-size); font-weight: 400; line-height: 2.25rem; }
.typescale-title-large { font-size: var(--md-sys-typescale-title-large-size); font-weight: 500; line-height: 1.75rem; }
.typescale-title-medium { font-size: var(--md-sys-typescale-title-medium-size); font-weight: 500; line-height: 1.5rem; }
.typescale-label-large { font-size: var(--md-sys-typescale-label-large-size); font-weight: 500; line-height: 1.25rem; }
.typescale-body-large { font-size: var(--md-sys-typescale-body-large-size); font-weight: 400; line-height: 1.5rem; }
.typescale-body-medium { font-size: var(--md-sys-typescale-body-medium-size); font-weight: 400; line-height: 1.25rem; letter-spacing: 0.017em;}

/* --- Components --- */

/* Button */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    height: 2.5rem; /* 40px */
    padding: 0 1.5rem;
    border-radius: 6.25rem; /* 100px */
    border: 1px solid transparent;
    font-size: var(--md-sys-typescale-label-large-size);
    font-weight: 500;
    cursor: pointer;
    transition: background-color var(--transition-duration) var(--transition-timing), box-shadow var(--transition-duration) var(--transition-timing), transform var(--transition-duration) var(--transition-timing);
    user-select: none;
    -webkit-tap-highlight-color: transparent; /* Remove tap highlight on mobile */
}
.btn:hover {
    box-shadow: 0 1px 3px 1px rgba(0,0,0,0.15);
}
.btn:active {
    transform: scale(0.98);
}
.btn--filled {
    background-color: var(--md-sys-color-primary);
    color: var(--md-sys-color-on-primary);
}
.btn--filled:hover { background-color: color-mix(in srgb, var(--md-sys-color-primary), white 8%); }
.btn--tonal {
    background-color: var(--md-sys-color-secondary-container);
    color: var(--md-sys-color-on-secondary-container);
}
.btn--tonal:hover { background-color: color-mix(in srgb, var(--md-sys-color-secondary-container), white 8%);}
.btn--text {
    height: auto;
    padding: 0.5rem 0.75rem;
    color: var(--md-sys-color-on-surface-variant);
    background-color: transparent;
}
.btn--text:hover { background-color: color-mix(in srgb, var(--md-sys-color-on-surface), transparent 88%); box-shadow: none; }
.btn--icon {
    width: 2.5rem;
    height: 2.5rem;
    padding: 0;
    font-size: 1.5rem;
    color: var(--md-sys-color-on-surface-variant);
    background-color: transparent;
}
.btn--icon:hover { background-color: color-mix(in srgb, var(--md-sys-color-on-surface), transparent 88%); box-shadow: none; }

/* Card */
.card {
    border-radius: 1.5rem;
    padding: 1.5rem;
    transition: background-color var(--transition-duration) var(--transition-timing), border-color var(--transition-duration) var(--transition-timing), transform var(--transition-duration) var(--transition-timing);
}
.card--filled {
    background-color: var(--md-sys-color-surface-container-high);
}
.card--outlined {
    background-color: transparent;
    border: 1px solid var(--md-sys-color-outline);
}
.card--outlined:hover {
    background-color: var(--md-sys-color-surface-container);
    transform: translateY(-4px);
}
.card--error {
    background-color: var(--md-sys-color-error-container);
    color: var(--md-sys-color-on-error-container);
}
.card-title-icon {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1rem;
}
.card-subtitle {
    color: var(--md-sys-color-on-surface-variant);
}


/* Chip */
.chips-group {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.75rem;
}
.chip {
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
    height: 2rem;
    padding: 0 0.75rem;
    border-radius: 2rem;
    font-size: var(--md-sys-typescale-label-large-size);
    background-color: var(--md-sys-color-secondary-container);
    color: var(--md-sys-color-on-secondary-container);
}
.chip--small {
    height: 1.5rem;
    padding: 0.125rem 0.5rem;
    font-size: 0.75rem;
    background-color: var(--md-sys-color-primary-container);
    color: var(--md-sys-color-on-primary-container);
}


/* --- Sections --- */

/* Top App Bar */
#top-app-bar {
    background-color: var(--md-sys-color-surface-container);
    position: sticky;
    top: 0;
    z-index: 100;
    transition: background-color var(--transition-duration) var(--transition-timing);
}
.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 4rem;
}
.nav-logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}
.nav-logo-img {
    width: 2rem;
    height: 2rem;
    border-radius: 50%;
}
.nav-links-desktop {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}
@media (max-width: 767px) {
    .nav-links-desktop { display: none; }
}
.nav-mobile-toggle {
    display: none;
}
@media (max-width: 767px) {
    .nav-mobile-toggle { display: flex; }
}

/* Mobile Navigation */
/* Mobile Navigation */
#mobile-nav-scrim {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0,0,0,0.4);
    z-index: 198;
    opacity: 0;
    pointer-events: none;
    /* 保持不变，用于背景遮罩的淡入淡出 */
    transition: opacity var(--transition-duration) var(--transition-timing);
    will-change: opacity;
}
#mobile-nav-scrim.is-open {
    opacity: 1;
    pointer-events: auto;
}

#mobile-nav-drawer {
    position: fixed;
    top: 0;
    left: 0;
    width: 80%;
    max-width: 320px;
    height: 100%;
    background-color: var(--md-sys-color-surface-container-high);
    z-index: 199;
    padding: 1rem;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    /* 初始状态：完全移出视图，并且透明 */
    transform: translateX(-100%);
    opacity: 0; /* 新增：初始透明度为0 */
    /* 动画过渡：同时过渡 transform 和 opacity */
    transition: transform var(--transition-duration) var(--transition-timing),
                opacity var(--transition-duration) var(--transition-timing),
                background-color var(--transition-duration) var(--transition-timing);
    will-change: transform, opacity; /* 更新：will-change 包含 opacity */
}
#mobile-nav-drawer.is-open {
    transform: translateX(0); /* 动画结束状态：回到原位 */
    opacity: 1; /* 新增：动画结束透明度为1 */
}

.mobile-nav-header {
    padding: 1rem 0.5rem;
}
.mobile-nav-link {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 0.75rem 1rem;
    border-radius: 1.5rem;
    font-size: var(--md-sys-typescale-body-large-size);
    color: var(--md-sys-color-on-surface-variant);
    transition: background-color var(--transition-duration) var(--transition-timing);
    cursor: pointer;
    background: none;
    border: none;
    width: 100%;
    text-align: left;
}
.mobile-nav-link:hover {
    background-color: color-mix(in srgb, var(--md-sys-color-on-surface), transparent 90%);
}

/* Hero Section */
.hero-section {
    background-color: var(--md-sys-color-surface-container-low);
    padding: 4rem 0;
    text-align: center;
    transition: background-color var(--transition-duration) var(--transition-timing);
}
.hero-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2rem;
}
.hero-logo {
    width: 7rem;
    height: 7rem;
    margin-bottom: -1rem;
}
.hero-subtitle {
    color: var(--md-sys-color-on-surface-variant);
    max-width: 35ch; /* Limit text width */
    margin: -1rem auto 0;
}
.hero-actions {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 1rem;
    margin-top: 1rem;
}

/* Content Sections */
.content-section {
    padding: 4rem 0;
}
.section-title {
    text-align: center;
    margin-bottom: 3rem;
}

/* --- Release Section --- */
#release-info {
    margin: 4rem 0;
}
.release-header {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.5rem;
}
.release-title {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: var(--md-sys-color-on-surface-variant);
}
.release-item {
    padding: 1.5rem;
    border: 1px solid var(--md-sys-color-outline-variant);
    border-radius: 1rem;
    background-color: var(--md-sys-color-surface-container);
}
.release-item + .release-item { margin-top: 1rem; }
.release-item-header {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1rem;
}
.release-item-tag {
    font-size: 0.8rem;
    padding: 0.25rem 0.6rem;
    border-radius: 0.5rem;
    background-color: var(--md-sys-color-tertiary-container);
    color: var(--md-sys-color-on-tertiary-container);
}
.release-item-body {
    color: var(--md-sys-color-on-surface-variant);
}
.release-item-body h1, .release-item-body h2, .release-item-body h3 { margin-bottom: 0.5em; }
.release-item-body ul { list-style-position: inside; padding-left: 1rem; }
.release-item-body li { margin-bottom: 0.25em; }
.release-item-actions {
    margin-top: 1.5rem;
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
}

.release-item-actions .download-btn {
    flex: 1;
    min-width: 200px;
}

/* Features Section */
.feature-card {
    display: flex;
    flex-direction: column;
}
.feature-icon {
    width: 3rem;
    height: 3rem;
    margin-bottom: 1rem;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--md-sys-color-primary-container);
    color: var(--md-sys-color-on-primary-container);
}
.feature-icon > .material-symbols-outlined { font-size: 1.5rem; }
.feature-card h3 {
    margin-bottom: 0.75rem;
}

/* Contributors Section */
.contributor-card {
    text-align: center;
}
.contributor-avatar {
    width: 6rem;
    height: 6rem;
    border-radius: 50%;
    margin: 0 auto 0.75rem;
    transition: transform var(--transition-duration) var(--transition-timing);
}
.contributor-card a:hover .contributor-avatar {
    transform: scale(1.05);
}
.contributor-name {
    color: var(--md-sys-color-on-surface-variant);
}
.contributor-card .chips-group {
    margin-top: 0.5rem;
}


/* Footer */
.site-footer {
    background-color: var(--md-sys-color-surface-container-high);
    color: var(--md-sys-color-on-surface-variant);
    padding: 3rem 0;
}
.footer-content {
    display: flex;
    flex-direction: column;
    md:flex-row;
    justify-content: space-between;
    align-items: center;
    gap: 2rem;
    text-align: center;
}
@media (min-width: 768px) {
    .footer-content {
        flex-direction: row;
        text-align: left;
    }
}
.footer-subtitle {
    margin-top: 0.25rem;
}
.footer-socials {
    display: flex;
    gap: 0.5rem;
}
.footer-socials .btn--icon {
    font-size: 1.25rem;
}
.site-footer .divider {
    margin-top: 2rem;
    margin-bottom: 2rem;
}
.footer-copyright {
    text-align: center;
}


/* --- Custom Loader Animation --- */
.release-loader-container {
    text-align: center;
    padding: 2rem;
    color: var(--md-sys-color-on-surface-variant);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
}
.loader {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    display: inline-block;
    border: 4px solid var(--md-sys-color-surface-variant);
    border-top: 4px solid var(--md-sys-color-primary);
    animation: spin 1s linear infinite;
}

.release-navigation {
    display: flex;
    align-items: center; /* 确保这一行存在 */
    justify-content: center;
    gap: 16px;
    margin-top: 20px; /* 您可以根据需要调整此值 */
}

.release-navigation .btn {
    display: flex;
    align-items: center; /* 确保按钮内部内容也垂直居中 */
    /* 如果按钮高度不一致，可以尝试设置一个固定的高度 */
    /* height: 48px; */
}

/* 针对页码文本进行微调 */
.release-navigation .card-subtitle {
    /* 移除或调整可能导致上浮的默认边距或行高 */
    margin: 0; /* 确保没有额外的 margin */
    padding: 0; /* 确保没有额外的 padding */
    line-height: 1; /* 尝试将行高设置为1，或者与按钮的文字行高保持一致 */
    /* 如果需要，可以进行微调 */
    /* transform: translateY(2px); */ /* 尝试向下微调，根据实际效果调整像素值 */
}

.release-item {
    /* 如果 release-item 本身的内容就可能溢出（例如，其内部有太多行文本） */
    /* 并且你想限制它的单行高度，那么可以考虑设置 min-height 或 max-height */
    /* 但通常溢出的是内部文本，而不是 release-item 容器本身 */
    
    /* 允许长单词或URL在需要时断开，防止水平溢出 */
    word-wrap: break-word; /* 兼容旧浏览器 */
    overflow-wrap: break-word; /* 现代浏览器推荐 */
}

/* 如果 release-item 内部有特定的文本区域（比如用于显示发布说明的div或p标签） */
/* 你可能需要更具体地定位它们，以确保文本换行 */
.release-item .release-description, /* 假设你有一个这样的类来包裹描述文本 */
.release-item .release-asset-name { /* 假设你有一个这样的类来包裹文件名称 */
    word-wrap: break-word;
    overflow-wrap: break-word;
    white-space: normal; /* 确保没有强制不换行 */
}

/* style.css */

.btn--tonal span { /* 定位到下载按钮内的文本 span */
    display: inline-block; /* 必须是块级或行内块级元素才能应用文本溢出 */
    max-width: 150px; /* 设置一个最大宽度，文本超出这个宽度才会显示省略号 */
    white-space: nowrap; /* 强制文本不换行 */
    overflow: hidden;    /* 隐藏超出宽度的部分 */
    text-overflow: ellipsis; /* 显示省略号 */
    vertical-align: middle; /* 确保文本和图标垂直对齐 */
}

/* 调整按钮整体的内边距，以确保图标和省略号文本的布局 */
.btn--tonal {
    display: inline-flex; /* 使用 flexbox 布局使图标和文本对齐 */
    align-items: center; /* 垂直居中对齐 */
    gap: 8px; /* 图标和文本之间的间距 */
    /* 移除之前可能为换行设置的 padding-left/right 如果它导致了不协调 */
    padding: 8px 16px; /* 调整整体内边距 */
}

/* 如果你的下载图标和文本在不同的 span 里，可能需要更精细的调整 */
.btn--tonal .material-symbols-outlined {
    flex-shrink: 0; /* 确保图标不会被压缩 */
}

/* 如果按钮文本被包裹在 span 中 */
.release-item .download-button span {
    white-space: normal;
    word-wrap: break-word;
    overflow-wrap: break-word;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

#top-app-bar.is-scrolled {
    background-color: var(--md-sys-color-surface-container-high);
    box-shadow: 0 2px 6px -1px rgba(0,0,0,0.1);
}

/* 下载弹窗样式 */
.modal {
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background-color: rgba(0,0,0,0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}
.modal.is-open {
    opacity: 1;
    visibility: visible;
}
.modal-content {
    background: var(--md-sys-color-surface-container);
    border-radius: 1rem;
    padding: 0 1.5rem 1.5rem;
    max-width: 480px;
    width: 100%;
    box-shadow: var(--md-sys-elevation-level3, 0 4px 24px rgba(0,0,0,0.12));
    transform: translateY(20px);
    transition: transform 0.3s ease;
    position: relative;
}
.modal.is-open .modal-content {
    transform: translateY(0);
}
.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
    padding: 1.5rem 0 0.75rem;
    border-bottom: 1px solid var(--md-sys-color-outline-variant);
}
.modal-body {
    padding: 0 1rem;
}
.countdown-number {
    font-weight: bold;
    color: var(--md-sys-color-primary);
}
.help-section {
    margin-top: 1.5rem;
    padding: 1rem;
    background: var(--md-sys-color-surface-container-high);
    border-radius: 0.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}
.link {
    text-decoration: underline;
    color: var(--md-sys-color-primary);
    font-weight: 600;
}
/* 移动端优化 */
@media (max-width: 480px) {
    .modal-content {
        margin: 0 1rem;
        padding: 0 1rem 1rem;
    }
}