/* 全局MC光标 */
/* MC 指针：文件位于站点根目录（原 /cursor_png/ 目录从未部署，故失效） */
* { cursor: url("/图片/正常选择.png?v=1") 0 0, auto !important; }

@charset "UTF-8";

/* ============================================================
   全局 CSS 变量（亮色/暗色主题）
   ============================================================ */
/* 页面自管理亮暗配色：阻止 WebView 算法强制变暗介入 */
:root {
    color-scheme: light dark;
    /* ============================================================
       透明玻璃体系（结构分节：以下为「非性能模式」基础材质）
       亮色/暗色共用同一组 alpha —— 结构性透明，非白底/黑底
       性能模式覆盖见文件底部「性能模式总控」
       ============================================================ */
    --glass-alpha: 0.42;          /* 玻璃基础透明度 */
    --glass-strong-alpha: 0.55;   /* 玻璃加强透明度（导航/遮罩层） */
    --bg-base: #f3f3f3;
    --bg-mica: rgba(243, 243, 243, 0.85); /* 页面背景固定 0.85：光晕团不外透，不随玻璃体系走 */
    --bg-card: rgba(255, 255, 255, var(--glass-alpha));
    --bg-hover: rgba(0, 0, 0, 0.04);
    --bg-active: rgba(0, 0, 0, 0.08);
    --text-primary: #1a1a1a;
    --text-secondary: #5f5f5f;
    --text-tertiary: #8a8a8a;
    --accent: #5b5fc7;
    --accent-hover: #4a4eb3;
    --border: rgba(0, 0, 0, 0.06);
    --shadow: 0 2px 8px rgba(0,0,0,0.04), 0 0 1px rgba(0,0,0,0.08);
    --shadow-hover: 0 8px 24px rgba(0,0,0,0.08), 0 0 1px rgba(0,0,0,0.1);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 20px;
    --radius-full: 9999px;
    --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    --title-scale: 1;
    --title-opacity: 1;
}

[data-theme="dark"] {
    --bg-base: #202020;
    --bg-mica: rgba(32, 32, 32, 0.85);
    --bg-card: rgba(40, 40, 40, var(--glass-alpha));
    --bg-hover: rgba(255, 255, 255, 0.06);
    --bg-active: rgba(255, 255, 255, 0.1);
    --text-primary: #e0e0e0;
    --text-secondary: #a0a0a0;
    --text-tertiary: #707070;
    --accent: #7a7fd9;
    --accent-hover: #8b90e8;
    --border: rgba(255, 255, 255, 0.06);
    --shadow: 0 2px 8px rgba(0,0,0,0.2), 0 0 1px rgba(255,255,255,0.04);
    --shadow-hover: 0 8px 24px rgba(0,0,0,0.3), 0 0 1px rgba(255,255,255,0.06);
}

/* ============================================================
   基础重置
   ============================================================ */
@font-face {
    font-family: "ChillRoundGothic";
    src: url("../字体/寒蝉圆黑体.TTF") format("truetype");
    font-weight: normal;
    font-style: normal;
    font-display: swap;
}

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

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
    text-size-adjust: 100%;
}

body {
    font-family: "ChillRoundGothic", "Segoe UI Variable", "Segoe UI", "Microsoft YaHei", "PingFang SC", sans-serif;
    background: var(--bg-base);
    color: var(--text-primary);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    overflow-x: hidden;
    transition: background 0.32s ease, color 0.32s ease;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ============================================================
   亮色模式 glow 光晕增强
   提高亮度/饱和度，让光晕在浅色背景上同样明显
   ============================================================ */

:root {
    --glow-1: rgba(120, 125, 255, 1.0);
    --glow-2: rgba(160, 100, 220, 1.0);
    --glow-3: rgba(50, 180, 255, 1.0);
    --glow-4: rgba(255, 100, 180, 1.0);
    --glow-5: rgba(60, 230, 120, 1.0);
    --glow-6: rgba(255, 190, 60, 1.0);
}

[data-theme="dark"] {
    --glow-1: rgba(91, 95, 199, 1.0);
    --glow-2: rgba(118, 75, 162, 1.0);
    --glow-3: rgba(0, 150, 255, 1.0);
    --glow-4: rgba(236, 72, 153, 1.0);
    --glow-5: rgba(34, 197, 94, 1.0);
    --glow-6: rgba(245, 158, 11, 1.0);
}

/* ============================================================
   背景层（固定定位，不随滚动移动）
   ============================================================ */
.bg-layer {
    position: fixed;
    inset: 0;
    z-index: -2;
    background: var(--bg-base);
    transition: background 0.32s ease;
}

/* Glow 光晕动画背景 */
.bg-glow {
    position: fixed;
    inset: 0;
    z-index: -1;
    overflow: hidden;
    pointer-events: none;
}

/* orb-wrapper 只负责定位 */
.orb-wrapper {
    position: absolute;
}

.orb-wrapper:nth-child(1) { top: -20%; left: -15%; }
.orb-wrapper:nth-child(2) { bottom: -20%; right: -15%; }
.orb-wrapper:nth-child(3) { top: 40%; left: 55%; }
.orb-wrapper:nth-child(4) { top: 70%; left: 0%; }
.orb-wrapper:nth-child(5) { top: 5%; left: 75%; }
.orb-wrapper:nth-child(6) { top: 85%; left: 35%; }

/* orb：radial-gradient 自带柔和边缘，零 filter 开销（原 blur(60px) 每帧重绘） */
.orb-wrapper .orb {
    width: 100%;
    height: 100%;
    border-radius: 50%;
    background: radial-gradient(circle at 50% 50%,
        var(--glow-c, #788dff) 0%,
        color-mix(in srgb, var(--glow-c, #788dff) 55%, transparent) 45%,
        transparent 70%);
    opacity: 1.0;
    animation: float 15s ease-in-out infinite;
}

.orb-wrapper:nth-child(1) .orb { width: 700px; height: 700px; --glow-c: var(--glow-1); animation-delay: 0s; }
.orb-wrapper:nth-child(2) .orb { width: 650px; height: 650px; --glow-c: var(--glow-2); animation-delay: -3.5s; }
.orb-wrapper:nth-child(3) .orb { width: 550px; height: 550px; --glow-c: var(--glow-3); animation-delay: -1.5s; }
.orb-wrapper:nth-child(4) .orb { width: 600px; height: 600px; --glow-c: var(--glow-4); animation-delay: -5s; }
.orb-wrapper:nth-child(5) .orb { width: 500px; height: 500px; --glow-c: var(--glow-5); animation-delay: -2.5s; }
.orb-wrapper:nth-child(6) .orb { width: 450px; height: 450px; --glow-c: var(--glow-6); animation-delay: -6s; }

@keyframes float {
    0%, 100% { transform: translate(0, 0) scale(1); }
    20% { transform: translate(60px, -70px) scale(1.12); }
    40% { transform: translate(-50px, 50px) scale(0.9); }
    60% { transform: translate(70px, 40px) scale(1.06); }
    80% { transform: translate(-40px, -50px) scale(0.96); }
}

/* Mica 材质模糊覆盖层 */
/* mica 层移除全屏 backdrop-filter（原 blur(45px) 是滚动卡顿最大元凶之一）：
   背景光晕在 z-index:-1，此层只需半透明底色即可形成层次 */
.mica-overlay {
    position: fixed;
    inset: 0;
    z-index: 0;
    background: var(--bg-mica);
    transition: background 0.32s ease;
    pointer-events: none;
}

/* ============================================================
   加载动画
   ============================================================ */
.loader-overlay {
    position: fixed;
    inset: 0;
    z-index: 9999;
    background: var(--bg-base);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: opacity 0.5s ease, visibility 0.5s ease;
}

.loader-overlay.hidden {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
}

.origin-loader {
    width: 44px;
    height: 44px;
    position: relative;
}

.origin-loader::before {
    content: "";
    position: absolute;
    inset: 0;
    border-radius: 50%;
    border: 3px solid transparent;
    border-top-color: var(--accent);
    border-right-color: var(--accent);
    animation: origin-spin 0.9s cubic-bezier(0.4, 0, 0.2, 1) infinite;
}

.origin-loader::after {
    content: "";
    position: absolute;
    inset: 5px;
    border-radius: 50%;
    border: 3px solid transparent;
    border-bottom-color: var(--accent);
    border-left-color: var(--accent);
    animation: origin-spin 0.7s cubic-bezier(0.4, 0, 0.2, 1) infinite reverse;
    opacity: 0.5;
}

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

/* ============================================================
   顶部导航栏（固定定位，毛玻璃效果）
   ============================================================ */
.app-bar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    padding: 12px 24px;
    backdrop-filter: blur(8px) saturate(1.5);
    -webkit-backdrop-filter: blur(8px) saturate(1.5);
    background: rgba(255, 255, 255, var(--glass-strong-alpha));
    border-bottom: 1px solid var(--border);
    transition: background 0.32s ease, border-color 0.32s ease,
                transform 0.5s cubic-bezier(0.22, 1, 0.36, 1);
}

[data-theme="dark"] .app-bar {
    background: rgba(32, 32, 32, var(--glass-strong-alpha));
}

/* 简洁模式动画专用的玻璃替身（::before）：
   平时完全透明不参与渲染，非简洁模式走上面原始代码 */
.app-bar::before {
    content: "";
    position: absolute;
    inset: 0;
    z-index: -1;
    clip-path: inset(0 0 0 0);
    opacity: 0;
    pointer-events: none;
    transition: clip-path 0.45s cubic-bezier(0.22, 1, 0.36, 1), opacity 0.3s ease;
}

/* 导航栏底部渐变过渡，与内容自然融合 */
.app-bar::after {
    content: "";
    position: absolute;
    bottom: -30px;
    left: 0;
    right: 0;
    height: 30px;
    background: linear-gradient(to bottom, var(--bg-mica), transparent);
    pointer-events: none;
    opacity: 1;
    transition: opacity 0.3s ease;
}

.app-bar-inner {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
}

/* 品牌问候语（渐变文字动画） */
.greeting-brand {
    font-size: clamp(15px, 2.5vw, 18px);
    font-size: round(up, clamp(15px, 2.5vw, 18px), 1px);
    font-weight: 700;
    background: linear-gradient(90deg, #7c3aed, #3b82f6, #7c3aed);
    background-size: 200% auto;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: gradient-flow 3s linear infinite;
    letter-spacing: 0.02em;
    white-space: nowrap;
    flex-shrink: 0;
}

@keyframes gradient-flow {
    0% { background-position: 0% center; }
    100% { background-position: 200% center; }
}

/* 彩蛋：邪恶模式 */
.greeting-brand.evil {
    background: linear-gradient(90deg, #ef4444, #f97316, #ef4444);
    background-size: 200% auto;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: gradient-flow 3s linear infinite;
}

/* 导航标签容器 */
.nav-center {
    display: flex;
    gap: clamp(8px, 2vw, 32px);
    align-items: center;
    flex-shrink: 1;
    min-width: 0;
    overflow: hidden;
}

/* 导航标签 */
.nav-tab {
    padding: 6px 16px;
    border-radius: var(--radius-lg);
    text-decoration: none;
    color: var(--text-secondary);
    font-size: 14px;
    font-weight: 500;
    transition: var(--transition);
    user-select: none;
    border: none;
    background: none;
    font-family: inherit;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    min-width: 0;
    flex-shrink: 1;
    max-width: 120px;
}

.nav-tab:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
    transform: scale(1.05);
}

.nav-tab:active {
    transform: scale(0.97);
}

.nav-tab.active {
    color: var(--accent);
    font-weight: 600;
}

/* 导航右侧按钮组 */
.nav-right {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-shrink: 0;
}

/* B站按钮（只保留SVG，无背景） */
.bilibili-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 38px;
    height: 38px;
    padding: 0;
    border: none;
    background: none;
    text-decoration: none;
    color: var(--text-secondary);
    transition: var(--transition);
    flex-shrink: 0;
}

.bilibili-btn:hover {
    transform: scale(1.12);
    color: var(--text-primary);
}

.bilibili-btn:active {
    transform: scale(0.95);
}

.bilibili-btn svg {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
    fill: #FB7299;
}

/* 主题切换按钮（只保留SVG，无背景） */
.theme-toggle {
    width: 38px;
    height: 38px;
    padding: 0;
    border: none;
    background: none;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    color: var(--text-primary);
    position: relative;
    z-index: 100;
    flex-shrink: 0;
}

.theme-toggle:hover {
    transform: scale(1.12);
}

.theme-toggle:active {
    transform: scale(0.95);
}

.theme-toggle svg {
    width: 20px;
    height: 20px;
    stroke: currentColor;
    fill: none;
    stroke-width: 2;
    stroke-linecap: round;
    stroke-linejoin: round;
}

/* ============================================================
   页面容器（三页横向滑动）
   ============================================================ */
.pages-container {
    position: relative;
    width: 100%;
    overflow: hidden;
    margin-top: 64px;
    flex: 1;
}

.pages-track {
    display: flex;
    align-items: flex-start;   /* 关键：不被最高页拉伸，否则首页 scrollHeight 永远=最高页，高度缩不回去 */
    width: 300%;
    transition: transform 0.5s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.page {
    width: 33.333%;
    padding: 40px 24px 16px;
    flex-shrink: 0;
}

.page-inner {
    max-width: 1400px;
    margin: 0 auto;
    padding-top: 20px;
}

/* ============================================================
   首页内容
   ============================================================ */
.about-title {
    font-size: clamp(22px, 4vw, 38px);
    font-size: round(up, clamp(22px, 4vw, 38px), 1px);
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1.2;
    margin-bottom: 10px;
    letter-spacing: -0.02em;
    transform-origin: left top;
    transform: scale(var(--title-scale, 1));
    opacity: var(--title-opacity, 1);
    transition: transform 0.15s ease-out, opacity 0.15s ease-out;
    word-break: keep-all;
}

.about-sub {
    font-size: clamp(13px, 2vw, 16px);
    font-size: round(up, clamp(13px, 2vw, 16px), 1px);
    color: var(--text-secondary);
    margin-bottom: 24px;
    word-break: keep-all;
}

.bio-line {
    font-size: clamp(13px, 2vw, 16px);
    font-size: round(up, clamp(13px, 2vw, 16px), 1px);
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 12px;
    max-width: 600px;
    word-break: keep-all;
}

.home-spacer {
    height: 40px;
}

/* ============================================================
   项目页：区块标题
   ============================================================ */
.section-title {
    font-size: clamp(22px, 4vw, 38px);
    font-size: round(up, clamp(22px, 4vw, 38px), 1px);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 32px;
    transform-origin: left top;
    transform: scale(var(--title-scale, 1));
    opacity: var(--title-opacity, 1);
    transition: transform 0.15s ease-out, opacity 0.15s ease-out;
    word-break: keep-all;
}

.section-title-tools {
    margin-top: 48px;
}

/* ============================================================
   项目卡片
   ============================================================ */
.project-card {
    background: rgba(255, 255, 255, var(--glass-alpha));
    backdrop-filter: blur(8px) saturate(1.5);
    -webkit-backdrop-filter: blur(8px) saturate(1.5);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 20px 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    box-shadow: var(--shadow);
    transition: var(--transition);
    margin-bottom: 16px;
}

[data-theme="dark"] .project-card {
    background: rgba(40, 40, 40, var(--glass-alpha));
}

.project-card:hover {
    box-shadow: var(--shadow-hover);
    transform: translateY(-2px);
}

/* 项目名称（自适应缩放由 JS 控制） */
.project-name {
    font-size: clamp(16px, 2.5vw, 22px);
    font-size: round(up, clamp(16px, 2.5vw, 22px), 1px);
    font-weight: 600;
    color: var(--text-primary);
    line-height: 1.4;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    min-width: 0;
    flex-shrink: 1;
}

/* ============================================================
   下载按钮
   ============================================================ */
.download-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    height: 40px;
    padding: 0 20px 0 19px;
    white-space: nowrap;
    border-radius: var(--radius-lg);
    background: rgba(91, 95, 199, var(--glass-alpha));
    backdrop-filter: blur(8px) saturate(1.5);
    color: #fff;
    text-decoration: none;
    font-size: 14px;
    font-weight: 600;
    box-shadow: 0 4px 12px rgba(91, 95, 199, 0.35);
    flex-shrink: 0;
    border: none;
    font-family: inherit;
    overflow: hidden;
    position: relative;
    transition: padding-right 0.5s cubic-bezier(0.4, 0, 0.2, 1),
                background 0.25s ease,
                box-shadow 0.25s ease,
                transform 0.25s ease,
                justify-content 0.5s;
}

.download-btn:hover {
    transform: scale(1.08);
    background: rgba(74, 78, 179, var(--glass-alpha));
    box-shadow: 0 6px 20px rgba(91, 95, 199, 0.5);
}

.download-btn:active {
    transform: scale(0.96);
}

.download-btn .dl-text {
    white-space: nowrap;
    position: relative;
}

.download-btn .dl-done {
    position: absolute;
    right: 19px;
    top: 50%;
    transform: translateY(-50%);
    opacity: 0;
    white-space: nowrap;
    pointer-events: none;
    line-height: 1;
}

.download-btn.clicked {
    justify-content: flex-start;
}

/* ============================================================
   视频区域
   ============================================================ */
.video-section-title {
    font-size: clamp(20px, 3.5vw, 32px);
    font-size: round(up, clamp(20px, 3.5vw, 32px), 1px);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 24px;
    transform-origin: left top;
    transform: scale(var(--title-scale, 1));
    opacity: var(--title-opacity, 1);
    transition: transform 0.15s ease-out, opacity 0.15s ease-out;
    word-break: keep-all;
}

.weekly-title {
    margin-top: 48px;
}

/* 视频网格布局 */
.video-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 0 20px;
    max-width: 1400px;
    align-items: start;
}

.rec-grid {
    max-width: 900px;
}

.rec-grid .video-card {
    width: calc(50% - 10px);
}

.weekly-grid .video-card {
    width: calc(33.333% - 14px);
}

/* 视频卡片 */
.video-card {
    display: flex;
    flex-direction: column;
    max-width: 412px;   /* 实测：B站嵌入播放器 420px 起展开完整UI，412 为极限 */
    margin-bottom: 20px;
    background: var(--bg-card);
    backdrop-filter: blur(8px) saturate(1.5);
    -webkit-backdrop-filter: blur(8px) saturate(1.5);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    text-decoration: none;
    color: var(--text-primary);
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.video-card:hover {
    transform: scale(1.03);
    box-shadow: var(--shadow-hover);
}

.video-img-wrap {
    position: relative;
    overflow: hidden;
}

.video-card img {
    width: 100%;
    aspect-ratio: 16 / 9;
    object-fit: cover;
    display: block;
    transition: var(--transition);
}

/* 图片加载中骨架屏 shimmer 动画 */
.img-loading {
    background: linear-gradient(90deg, var(--bg-card) 25%, var(--bg-hover) 50%, var(--bg-card) 75%);
    background-size: 200% 100%;
    animation: imgShimmer 1.5s infinite;
}

@keyframes imgShimmer {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

.img-loading img {
    opacity: 0;
    transition: opacity 0.3s ease;
}

.img-loading img[src]:not([data-src]) {
    opacity: 1;
}

.video-card:hover img {
    transform: scale(1.05);
}

.video-img-overlay {
    position: absolute;
    inset: 0;
    background: #000;
    opacity: 0;
    transition: opacity 0.5s ease;
    pointer-events: none;
}

[data-theme="dark"] .video-img-overlay {
    opacity: 0.25;
}

/* 视频卡片文字（自适应缩放由 JS 控制） */
.video-card-text {
    padding: 14px;
    font-size: 15px;
    font-weight: 600;
    text-align: center;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    min-width: 0;
}

/* ============================================================
   页脚
   ============================================================ */
.footer {
    position: relative;
    z-index: 1;
    padding: 16px 24px;
    width: 100%;
    max-width: 1400px;
    margin: 0 auto;
}

.footer-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 8px;
    gap: 12px;
    flex-wrap: wrap;
}

.footer-left {
    color: var(--text-tertiary);
    font-size: clamp(10px, 1.5vw, 12px);
    font-size: round(up, clamp(10px, 1.5vw, 12px), 1px);
    word-break: keep-all;
}

.footer-right {
    color: var(--text-tertiary);
    font-size: clamp(8px, 1.2vw, 8px);
    font-size: round(up, clamp(8px, 1.2vw, 8px), 1px);
    text-align: right;
}

.footer-icp {
    text-align: center;
}

.footer-icp a {
    font-size: clamp(11px, 1.5vw, 13px);
    font-size: round(up, clamp(11px, 1.5vw, 13px), 1px);
    color: #888888;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-icp a:hover {
    color: var(--accent);
}

/* ============================================================
   区块小字（B站热门/每周必看底下的灰色说明）
   ============================================================ */
.section-subtitle {
    font-size: clamp(13px, 2vw, 16px);
    font-size: round(up, clamp(13px, 2vw, 16px), 1px);
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 16px;
    margin-top: -8px;
    transform-origin: left top;
    transition: transform 0.15s ease-out, opacity 0.15s ease-out;
    word-break: keep-all;
}

/* ============================================================
   右下角浮动滚动按钮
   ============================================================ */
.scroll-float-btn {
    position: fixed;
    right: 24px;
    bottom: 24px;
    z-index: 3000; /* 始终最顶层，不被简洁模式 Dock 顶走 */
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    padding: 0;
    border-radius: var(--radius-lg);
    background: rgba(255, 255, 255, var(--glass-alpha));
    backdrop-filter: blur(8px) saturate(1.5);
    -webkit-backdrop-filter: blur(8px) saturate(1.5);

    border: 1px solid var(--border);
    color: var(--text-secondary);
    box-shadow: var(--shadow);
    font-size: 20px;
    font-weight: 700;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    pointer-events: none;
}

/* 顶部按钮位于底部按钮正上方，间距 = 按钮距边缘 24px */
.scroll-float-btn.btn-to-top {
    bottom: calc(24px + 44px + 24px);
}

/* 返回底部按钮不显示时，返回顶部按钮滑回右下角原位（bottom 参与过渡 => 有移动动画） */
.scroll-float-btn.btn-to-top.solo {
    bottom: 24px;
}

/* 按钮位移与显隐都带过渡，保证移动过程可见 */
.scroll-float-btn {
    transition: bottom 0.35s cubic-bezier(0.4, 0, 0.2, 1),
                opacity 0.25s cubic-bezier(0.4, 0, 0.2, 1),
                visibility 0.25s cubic-bezier(0.4, 0, 0.2, 1),
                transform 0.25s cubic-bezier(0.4, 0, 0.2, 1),
                background 0.25s ease,
                box-shadow 0.25s ease;
}

[data-theme="dark"] .scroll-float-btn.btn-to-top {
    background: rgba(40, 40, 40, var(--glass-alpha));
}

[data-theme="dark"] .scroll-float-btn {
    background: rgba(40, 40, 40, var(--glass-alpha));
}

.scroll-float-btn.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
    pointer-events: auto;
}

.scroll-float-btn:hover {
    background: var(--bg-hover);
    transform: scale(1.08);
    box-shadow: var(--shadow-hover);
}

.scroll-float-btn:active {
    transform: scale(0.95);
}

/* ============================================================
   标题旁边的小加载动画
   ============================================================ */
.title-loader {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    vertical-align: middle;
    margin-left: 10px;
}

.title-loader .origin-loader {
    width: 40px;
    height: 40px;
}

.title-loader.hidden {
    display: none;
}

/* ============================================================
   页面切换入场动画（CSS 驱动，高性能）
   ============================================================ */
/* 时长须与 main.js 中 runPageEnterAnimation 的 DURATION 保持一致 */
.enter-anim {
    opacity: 0;
    transform: translateY(22px);
    transition: transform 0.52s cubic-bezier(0.22, 1, 0.36, 1),
                opacity 0.52s cubic-bezier(0.22, 1, 0.36, 1);
    will-change: transform, opacity;
}

.enter-anim-active {
    opacity: 1;
    transform: translateY(0);
}

/* ============================================================
   域名检测全屏通知弹窗
   ============================================================ */
.domain-notify {
    position: fixed;
    inset: 0;
    z-index: 10000;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.4s ease, visibility 0.4s ease;
}

.domain-notify.show {
    opacity: 1;
    visibility: visible;
}

.domain-notify-content {
    background: var(--bg-card);
    backdrop-filter: blur(40px) saturate(1.2);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 48px 56px;
    max-width: 520px;
    width: 90%;
    box-shadow: var(--shadow-hover);
    text-align: center;
    transform: scale(0.92);
    transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.domain-notify.show .domain-notify-content {
    transform: scale(1);
}

.domain-notify-text {
    margin-bottom: 36px;
}

.domain-notify-title {
    font-size: clamp(18px, 3.5vw, 30px);
    font-size: round(up, clamp(18px, 3.5vw, 30px), 1px);
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1.4;
    margin-bottom: 16px;
}

.domain-notify-line {
    font-size: clamp(13px, 2.2vw, 17px);
    font-size: round(up, clamp(13px, 2.2vw, 17px), 1px);
    color: var(--text-secondary);
    line-height: 1.8;
}

.domain-notify-actions {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 20px;
}

.domain-notify-cancel {
    font-size: 15px;
    font-weight: 500;
    color: var(--text-secondary);
    transition: color 0.2s ease;
    user-select: none;
}

.domain-notify-cancel:hover {
    color: var(--text-primary);
}

.domain-notify-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    height: 40px;
    padding: 0 24px;
    border-radius: var(--radius-lg);
    background: rgba(91, 95, 199, var(--glass-alpha));
    backdrop-filter: blur(8px) saturate(1.5);
    color: #fff;
    text-decoration: none;
    font-size: 14px;
    font-weight: 600;
    box-shadow: 0 4px 12px rgba(91, 95, 199, 0.35);
    border: none;
    font-family: inherit;
    transition: transform 0.25s ease, background 0.25s ease, box-shadow 0.25s ease;
    white-space: nowrap;
}

.domain-notify-btn:hover {
    transform: scale(1.08);
    background: rgba(74, 78, 179, var(--glass-alpha));
    box-shadow: 0 6px 20px rgba(91, 95, 199, 0.5);
}

.domain-notify-btn:active {
    transform: scale(0.96);
}

/* 性能提示纯文本样式（中等灰色，靠左对齐） */
.domain-notify-plain {
    text-align: left;
    margin-bottom: 32px;
}

.domain-notify-plain p {
    font-size: clamp(13px, 2.2vw, 17px);
    font-size: round(up, clamp(13px, 2.2vw, 17px), 1px);
    color: var(--text-secondary);
    line-height: 1.8;
    margin: 0;
}

/* ============================================================
   语言检测全屏通知弹窗
   ============================================================ */
.lang-notify {
    position: fixed;
    inset: 0;
    z-index: 10001;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.4s ease, visibility 0.4s ease;
}

.lang-notify.show {
    opacity: 1;
    visibility: visible;
}

.lang-notify-content {
    background: var(--bg-card);
    backdrop-filter: blur(40px) saturate(1.2);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 48px 56px;
    max-width: 560px;
    width: 90%;
    box-shadow: var(--shadow-hover);
    text-align: center;
    transform: scale(0.92);
    transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.lang-notify.show .lang-notify-content {
    transform: scale(1);
}

.lang-notify-title {
    font-size: clamp(16px, 3vw, 28px);
    font-size: round(up, clamp(16px, 3vw, 28px), 1px);
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1.4;
    margin-bottom: 32px;
}

.lang-notify-actions {
    display: flex;
    align-items: center;
    justify-content: flex-end;
}

.lang-notify-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    height: 40px;
    padding: 0 24px;
    border-radius: var(--radius-lg);
    background: rgba(91, 95, 199, var(--glass-alpha));
    backdrop-filter: blur(8px) saturate(1.5);
    color: #fff;
    text-decoration: none;
    font-size: 14px;
    font-weight: 600;
    box-shadow: 0 4px 12px rgba(91, 95, 199, 0.35);
    border: none;
    font-family: inherit;
    transition: transform 0.25s ease, background 0.25s ease, box-shadow 0.25s ease;
    white-space: nowrap;
}

.lang-notify-btn:hover {
    transform: scale(1.08);
    background: rgba(74, 78, 179, var(--glass-alpha));
    box-shadow: 0 6px 20px rgba(91, 95, 199, 0.5);
}

.lang-notify-btn:active {
    transform: scale(0.96);
}

/* ============================================================
   彩蛋通知 toast
   ============================================================ */
.easter-egg-toast {
    position: fixed;
    top: -120px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 10001;
    padding: 14px 36px;
    border-radius: var(--radius-lg);
    background: rgba(255, 255, 255, var(--glass-alpha));
    backdrop-filter: blur(8px) saturate(1.5);
    -webkit-backdrop-filter: blur(8px) saturate(1.5);

    border: 1px solid var(--border);
    box-shadow: var(--shadow-hover);
    pointer-events: none;
    opacity: 0;
}

[data-theme="dark"] .easter-egg-toast {
    background: rgba(32, 32, 32, var(--glass-strong-alpha));
}

.easter-egg-toast.show {
    animation: toast-in 0.5s cubic-bezier(0.4, 0, 0.2, 1) forwards,
               toast-stay 3s linear 0.5s forwards,
               toast-out 0.5s cubic-bezier(0.4, 0, 0.2, 1) 3.5s forwards;
}

@keyframes toast-in {
    0% { top: -120px; opacity: 0; }
    100% { top: 20px; opacity: 1; }
}

@keyframes toast-stay {
    0%, 100% { top: 20px; opacity: 1; }
}

@keyframes toast-out {
    0% { top: 20px; opacity: 1; }
    100% { top: -120px; opacity: 0; }
}

.toast-text {
    font-size: clamp(13px, 2vw, 15px);
    font-size: round(up, clamp(13px, 2vw, 15px), 1px);
    font-weight: 600;
    color: var(--text-primary);
    white-space: nowrap;
}

/* ============================================================
   响应式媒体查询
   ============================================================ */

/* 平板及以下 */
@media (max-width: 768px) {
    .app-bar {
        padding: 10px 16px;
    }

    .app-bar-inner {
        gap: 8px;
    }

    .nav-center {
        gap: 4px;
    }

    .nav-tab {
        padding: 5px 10px;
        font-size: 13px;
        max-width: 80px;
    }

    .page {
        padding: 24px 16px 12px;
    }

    .page-inner {
        padding-top: 8px;
    }

    .home-spacer {
        height: 8px;
    }

    .project-card {
        padding: 16px 18px;
    }

    .weekly-grid .video-card {
        width: calc(50% - 10px);
    }

    .domain-notify-content,
    .lang-notify-content {
        padding: 32px 24px;
    }

    .scroll-float-btn {
        right: 16px;
        bottom: 16px;
    }

    .scroll-float-btn.btn-to-top {
        bottom: calc(16px + 44px + 16px);
    }

    .scroll-float-btn.btn-to-top.solo {
        bottom: 16px;
    }
}

/* 手机竖屏 */
@media (max-width: 480px) {
    .rec-grid .video-card,
    .weekly-grid .video-card {
        width: 100%;
    }

    .project-card {
        flex-direction: column;
        align-items: flex-start;
        gap: 12px;
    }

    .project-name {
        width: 100%;
    }

    .download-btn {
        align-self: flex-end;
        white-space: nowrap;
    }

    .footer-row {
        flex-direction: column;
        align-items: flex-start;
        gap: 4px;
    }

    .footer-right {
        text-align: left;
    }
}

/* 手机横屏 */
@media (max-width: 768px) and (orientation: landscape) {
    .weekly-grid .video-card {
        width: calc(50% - 10px);
    }
}

/* 手机竖屏（强制单列） */
@media (max-width: 768px) and (orientation: portrait) {
    .weekly-grid .video-card {
        width: 100%;
    }
}

/* 超小屏设备（如 iPhone SE） */
@media (max-width: 375px) {
    .greeting-brand {
        font-size: 13px;
    }

    .nav-tab {
        padding: 4px 8px;
        font-size: 12px;
        max-width: 60px;
    }

    .bilibili-btn,
    .theme-toggle {
        width: 34px;
        height: 34px;
    }

    .bilibili-btn svg,
    .theme-toggle svg {
        width: 18px;
        height: 18px;
    }
}

/* 超大屏优化 */
@media (min-width: 1921px) {
    .page-inner {
        max-width: 1600px;
    }

    .video-grid {
        max-width: 1600px;
    }
}

/* 高 DPI 屏幕优化 */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
    .origin-loader::before,
    .origin-loader::after {
        border-width: 2.5px;
    }
}

/* ============================================================
   图片自适应（全局兜底，视频模板内的图片已由各自类控制不受影响）
   ============================================================ */
img { max-width: 100%; }

/* 首页：图片 + 三行字横向排列 */
.home-hero {
    display: flex;
    align-items: flex-start;
    gap: clamp(16px, 3vw, 32px);
}

.home-hero-img {
    width: clamp(80px, 18vw, 160px);
    height: auto;
    flex-shrink: 0;
}

.home-hero-texts { min-width: 0; }

/* intp-line 与 bio-line 外观一致 */

/* 设置页 */
.settings-row {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 16px 24px;
    margin-bottom: 12px;
    max-width: 640px;
    box-shadow: var(--shadow);
    z-index: 0;
}
/* 毛玻璃放伪元素层：文字不进合成层，避免 backdrop-filter 导致的名称发虚 */
.settings-row::before {
    content: '';
    position: absolute; inset: 0;
    border-radius: inherit;
    backdrop-filter: blur(8px) saturate(1.5);
    -webkit-backdrop-filter: blur(8px) saturate(1.5);
    z-index: -1;
    pointer-events: none;
}

.settings-label {
    font-size: clamp(15px, 2vw, 18px);
    font-size: round(up, clamp(15px, 2vw, 18px), 1px);
    font-weight: 600;
    color: var(--text-primary);
}

.settings-toggle {
    height: 1.2em;
    width: auto;
    cursor: pointer;
    user-select: none;
    flex-shrink: 0;
}

.settings-toggle.disabled {
    filter: grayscale(1);
    opacity: 0.5;
    cursor: not-allowed;
}

/* ============================================================
   简洁模式：导航栏缩成三枚胶囊 Dock 沉底（iOS 风格）
   开启：点击瞬间胶囊即刻成型（玻璃贴玻璃不可见，无闪现）
   → 背景从两侧向中间收缩（顶部渐变同步淡出，两枚侧胶囊同步滑向中间）
   → 收缩完毕立即下沉；下沉开始时网页底部亮起倒置渐变（30px+20px）
   关闭：以上过程倒放，不另写动画
   胶囊毛玻璃与导航栏同款 blur(8px) saturate(1.5)
   （位移由 main.js 的 FLIP 驱动，真实滑动不瞬移）
   ============================================================ */

/* 底部渐变：导航栏下方渐变样式倒置，高度 50px */
.dock-glow {
    position: fixed;
    left: 0;
    right: 0;
    bottom: 0;
    height: 50px;
    background: linear-gradient(to top, var(--bg-mica), transparent);
    pointer-events: none;
    z-index: 99;
    opacity: 0;
    transition: opacity 0.4s ease;
}

.dock-glow.show { opacity: 1; }

/* veil：玻璃显示权交给 ::before（切换瞬间两块玻璃完全重叠，无跳变） */
html.glass-veil .app-bar {
    background: transparent;
    border-bottom-color: transparent;
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
}

html[data-theme="dark"].glass-veil .app-bar {
    background: transparent;
}

html.glass-veil .app-bar::before {
    opacity: 1;
    background: rgba(255, 255, 255, var(--glass-alpha));
    backdrop-filter: blur(8px) saturate(1.5);
    -webkit-backdrop-filter: blur(8px) saturate(1.5);
    border-bottom: 1px solid var(--border);
}

html[data-theme="dark"].glass-veil .app-bar::before {
    background: rgba(32, 32, 32, var(--glass-strong-alpha));
}

/* 简洁模式布局：三控件提升为独立胶囊 */
html.compact .app-bar {
    padding: 0 16px;
    transition: transform 0.5s cubic-bezier(0.22, 1, 0.36, 1);
}

/* 背景从两侧向中间收缩（开启） */
html.compact .app-bar::before {
    clip-path: inset(0 50% 0 50%);
}

/* 关闭倒放：背景从中间向两边展开 */
html.compact-closing .app-bar::before {
    clip-path: inset(0 0 0 0);
}

/* 顶部渐变随收缩/展开淡出 */
html.compact .app-bar::after,
html.compact-closing .app-bar::after {
    opacity: 0;
}

/* 下沉/上浮（开启最后一步、关闭第一步，transform 过渡产生动画） */
html.compact-docked .app-bar {
    transform: translateY(calc(100vh - 100% - 16px));
}

@supports (height: 100dvh) {
    html.compact-docked .app-bar {
        transform: translateY(calc(100dvh - 100% - 16px));
    }
}

html.compact .nav-right { display: contents; }

html.compact .greeting-brand { order: 0; }
html.compact .bilibili-btn { order: 1; }
html.compact .nav-center { order: 2; }
html.compact .theme-toggle { order: 3; }

html.compact .app-bar-inner {
    justify-content: center;
    gap: 12px;
}

/* 胶囊外皮：导航栏同款毛玻璃 */
html.compact .nav-center,
html.compact .bilibili-btn,
html.compact .theme-toggle {
    background: rgba(255, 255, 255, var(--glass-alpha));
    backdrop-filter: blur(8px) saturate(1.5);
    -webkit-backdrop-filter: blur(8px) saturate(1.5);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
}

/* 三枚胶囊统一高度：侧边按钮随行高拉伸，与中间按钮完全一致 */
html.compact .bilibili-btn,
html.compact .theme-toggle {
    width: 44px;
    height: auto;
    align-self: stretch;
}

html.compact .nav-center {
    padding: 6px 12px;
    gap: 4px;
}

html[data-theme="dark"].compact .nav-center,
html[data-theme="dark"].compact .bilibili-btn,
html[data-theme="dark"].compact .theme-toggle {
    background: rgba(40, 40, 40, var(--glass-alpha));
}

/* 问候语：宽度瞬时收起（由 FLIP 补偿布局位移），淡出掩盖 */
.greeting-brand {
    transition: opacity 0.25s ease;
}

html.compact .greeting-brand {
    max-width: 0;
    opacity: 0;
    overflow: hidden;
    pointer-events: none;
    margin-right: -12px;
}

/* 内容区留白与悬浮按钮联动 */
.pages-container {
    transition: margin-top 0.35s ease;
}

html.compact .pages-container {
    margin-top: 24px;
}

/* 悬浮按钮不随简洁模式抬升：始终右下角原位 + z-index 3000 置顶 */

/* ============================================================
   主题切换期间的性能保护（亮暗切换掉帧治理）
   原理：切换瞬间(340ms 窗口内) 全站颜色瞬时到位 —— 不做渐变过渡，
   并暂时关闭所有滚动卡片的 backdrop-filter。毛玻璃随背景渐变
   逐帧重采样是掉帧主因；瞬时换色 + 短暂去模糊后，整个切换
   只剩一次重排与一次重绘。窗口结束(theme-switching 移除)后
   玻璃与过渡全部恢复，肉眼只见"啪"一下换色，不再拖影掉帧。
   ============================================================ */
html.theme-switching,
html.theme-switching body,
html.theme-switching .bg-layer,
html.theme-switching .bg-glow,
html.theme-switching .mica-overlay,
html.theme-switching .app-bar,
html.theme-switching .app-bar::before,
html.theme-switching .app-bar::after,
html.theme-switching .project-card,
html.theme-switching .video-card,
html.theme-switching .download-btn,
html.theme-switching .settings-row,
html.theme-switching .scroll-float-btn,
html.theme-switching .easter-egg-toast,
html.theme-switching .crypto-card,
html.theme-switching .crypto-btn,
html.theme-switching .crypto-key,
html.theme-switching .crypto-area,
html.theme-switching .footer-icp a {
    transition: none !important;
}

html.theme-switching .orb {
    animation: none !important;
}

/* 切换窗口内暂时去模糊：玻璃卡片改实色一闪而过，窗口结束即恢复 */
html.theme-switching .project-card,
html.theme-switching .video-card,
html.theme-switching .download-btn,
html.theme-switching .settings-row,
html.theme-switching .scroll-float-btn,
html.theme-switching .easter-egg-toast,
html.theme-switching .crypto-card,
html.theme-switching .crypto-btn {
    backdrop-filter: none !important;
    -webkit-backdrop-filter: none !important;
}

/* 性能模式：毛玻璃只留透明度去掉模糊，动画照常保留 */
/* 系统减少动态效果：关光晕动画与无限动画 */
@media (prefers-reduced-motion: reduce) {
    .orb { animation: none !important; }
    .greeting-brand { animation: none !important; }
}

/* ============================================================
   高级材质 / 动画效果 总控（设置页两个开关，默认开启）
   高级材质关闭：滚动内容卡片放弃实时毛玻璃，改半透明实色
   （backdrop-filter 仅保留导航栏等固定元素，滚动零滤镜开销）
   动画效果关闭：装饰动画与过渡全部停用
   ============================================================ */
html.no-material {
    --glass-alpha: 0.62;
    --glass-strong-alpha: 0.7;
}

html.no-material .project-card,
html.no-material .video-card,
html.no-material .download-btn,
html.no-material .settings-row,
html.no-material .scroll-float-btn,
html.no-material .easter-egg-toast,
html.no-material .crypto-card,
html.no-material .crypto-btn,
html.no-material.compact .nav-center,
html.no-material.compact .bilibili-btn,
html.no-material.compact .theme-toggle {
    backdrop-filter: none !important;
    -webkit-backdrop-filter: none !important;
}

/* 动画效果关闭：过渡瞬时完成、动画全部停用（含加载圈，遮罩仍会按时隐藏） */
html.no-anim *,
html.no-anim *::before,
html.no-anim *::after {
    transition: none !important;
    animation: none !important;
}

/* ============================================================
   首页：文字加解密（潮汐算法 V3）
   ============================================================ */
.crypto-section {
    margin-top: 100vh;   /* 推到首屏之外（任何视口高度），下滑才可见 */
}

.crypto-title {
    margin-bottom: 12px;
}

.crypto-note {
    max-width: 640px;
}

.crypto-card {
    background: var(--bg-card);
    backdrop-filter: blur(8px) saturate(1.5);
    -webkit-backdrop-filter: blur(8px) saturate(1.5);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 20px 24px;
    max-width: 640px;
    box-shadow: var(--shadow);
    z-index: 0;
}
/* 毛玻璃放伪元素层：文字不进合成层，避免 backdrop-filter 导致的名称发虚 */
.settings-row::before {
    content: '';
    position: absolute; inset: 0;
    border-radius: inherit;
    backdrop-filter: blur(8px) saturate(1.5);
    -webkit-backdrop-filter: blur(8px) saturate(1.5);
    z-index: -1;
    pointer-events: none;
}

.crypto-area {
    width: 100%;
    font-family: inherit;
    font-size: 14px;
    line-height: 1.6;
    color: var(--text-primary);
    background: var(--bg-hover);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 10px 12px;
    outline: none;
    resize: vertical;
    min-height: 88px;
    transition: border-color 0.25s ease;
}

.crypto-area:focus {
    border-color: var(--accent);
}

.crypto-output {
    min-height: 110px;
    word-break: break-all;
    background: transparent;
}

.crypto-key {
    width: 100%;
    margin-top: 12px;
    font-family: inherit;
    font-size: 14px;
    color: var(--text-primary);
    background: var(--bg-hover);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 10px 12px;
    height: 40px;
    outline: none;
    transition: border-color 0.25s ease;
}

.crypto-key:focus {
    border-color: var(--accent);
}

.crypto-actions {
    display: flex;
    gap: 12px;
    margin-top: 14px;
    flex-wrap: wrap;
}

.crypto-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    height: 40px;
    padding: 0 24px;
    border: none;
    border-radius: var(--radius-lg);
    background: rgba(91, 95, 199, var(--glass-alpha));
    backdrop-filter: blur(8px) saturate(1.5);
    -webkit-backdrop-filter: blur(8px) saturate(1.5);
    color: #fff;
    font-size: 14px;
    font-weight: 600;
    font-family: inherit;
    box-shadow: 0 4px 12px rgba(91, 95, 199, 0.35);
    cursor: pointer;
    transition: transform 0.25s ease, background 0.25s ease, box-shadow 0.25s ease;
}

.crypto-btn:hover {
    transform: scale(1.05);
    background: rgba(74, 78, 179, var(--glass-alpha));
    box-shadow: 0 6px 20px rgba(91, 95, 199, 0.5);
}

.crypto-btn:active {
    transform: scale(0.96);
}

.crypto-btn-plain {
    background: var(--bg-card);
    color: var(--text-primary);
    box-shadow: var(--shadow);
}

.crypto-status {
    margin: 10px 0 0;
    font-size: 13px;
    color: var(--text-secondary);
    min-height: 1.2em;
    word-break: keep-all;
}

/* GPU加速：为常用动画元素开启硬件加速层 */
/* 只给纯动画元素开硬件层；卡片常驻 will-change 会让文字进合成层变虚 */
html.gpu .orb,
html.gpu .pages-track {
    will-change: transform;
}

/* 小屏时首页图片与文字纵向排列 */
@media (max-width: 480px) {
    .home-hero { flex-direction: column; }
    .settings-row { padding: 14px 16px; }
}

/* ==================== 视频板块折叠长条（毛玻璃，同下载条模板） ==================== */
.video-board { margin-bottom: 28px; }
.video-board-bar {
    position: relative; z-index: 0;
    display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 12px;
    width: 100%;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    padding: 16px 24px;
    cursor: pointer;
    font-family: inherit;
    text-align: left;
    transition: background 0.32s ease, border-color 0.32s ease;
    /* 按需求：悬停不浮起；高度自然生长，不与相邻板对齐 */
}
/* 毛玻璃只渲染板背后区域，四周多出 1px 防动画缝隙 */
.video-board-bar::before {
    content: "";
    position: absolute; inset: -1px; z-index: -1;
    border-radius: inherit;
    backdrop-filter: blur(8px) saturate(1.5);
    -webkit-backdrop-filter: blur(8px) saturate(1.5);
    pointer-events: none;
}
.video-board-bar:hover { background: var(--bg-hover); }
.video-board-chev {
    width: 20px; height: 20px; flex-shrink: 0;
    color: var(--text-secondary);
    transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}
.video-board.open .video-board-chev { transform: rotate(180deg); }
.video-board-body {
    display: grid; grid-template-rows: 0fr;
    transition: grid-template-rows 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}
.video-board.open .video-board-body { grid-template-rows: 1fr; }
.video-board-inner { overflow: hidden; min-height: 0; }
.video-board-inner .video-grid { padding-top: 18px; }
.board-loader {
    flex: none;
    width: 32px; height: 32px;
    margin-right: 4px;
    opacity: 0.9;
}
.board-loader::before { border-width: 2px; }
.board-loader::after { inset: 4px; border-width: 2px; }
.origin-loader.hidden { display: none; }

/* 设置行悬停浮起（与下载长条一致） */
.settings-row { transition: transform 0.25s ease, box-shadow 0.25s ease, background 0.32s ease; }
.settings-row:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
}

/* ==================== 悬停封面预览（B站官方播放器 iframe） ==================== */
.hover-video {
    position: absolute; inset: 0; width: 100%; height: 100%;
    border: 0; z-index: 2; pointer-events: none;
    opacity: 0; transition: opacity 0.25s ease;
}
.hover-video.on { opacity: 1; }

/* ==================== 内嵌播放器Beta：全屏遮罩 ==================== */
/* 挂在 body 下，不受任何 transform 容器影响，铺满真实视口。
   不加任何背景色/模糊：动画期间就是网页原样，
   只有封面图在放大；落位后 .ready 才亮出视频 */
.embed-fullscreen {
    position: fixed; inset: 0; z-index: 99999;
    background: transparent;
    visibility: hidden;
}
.embed-fullscreen.show { visibility: visible; }
.embed-fullscreen iframe {
    position: absolute; inset: 0;
    width: 100%; height: 100%;
    border: 0; display: block;
    background: #000;
    opacity: 0;                            /* 动画期间藏着，落位亮出 */
    transition: opacity .25s ease;
}
.embed-fullscreen.ready iframe { opacity: 1; }
.embed-back-btn {
    position: absolute; top: 8px; left: 10px; z-index: 100000;
    width: 52px; height: 52px;
    border: none; border-radius: 50%;
    background: transparent;
    color: #fff; font-size: 30px; line-height: 1;
    font-family: inherit; cursor: pointer;
    text-shadow: 0 1px 6px rgba(0,0,0,.7);
    opacity: 0; pointer-events: none;
    transition: opacity .25s ease, transform .2s ease;
}
.embed-back-btn.show { opacity: .9; pointer-events: auto; }
.embed-back-btn:active { transform: scale(0.94); }

/* ==================== 僵尸彩蛋：冻结页面 ==================== */
.mc-zombie-blocker {
    position: fixed; inset: 0; z-index: 9500;
    background: transparent;
    cursor: auto;                /* 电脑端系统指针照常动，但页面点不动 */
}
.mc-zombie-pinned {
    position: fixed; z-index: 9501;
    width: 32px; height: 32px;
    pointer-events: none;
    image-rendering: pixelated;
}

/* ==================== 首页右上角访问计数 ==================== */
#home-page .page-inner { position: relative; }

.visit-counter {
    position: absolute;
    top: 26px; right: 4px;
    font-size: clamp(15px, 2vw, 18px);
    font-size: round(up, clamp(15px, 2vw, 18px), 1px);
    font-weight: 600;
    color: var(--text-primary);
    text-align: right;
    z-index: 5;
}