:root {
  /* Material You inspired tokens */
  --md-sys-primary: #6750a4;
  --md-sys-on-primary: #ffffff;
  --md-sys-primary-container: #eaddff;
  --md-sys-on-primary-container: #21005d;
  --md-sys-secondary: #625b71;
  --md-sys-on-secondary: #ffffff;
  --md-sys-bg: #121212;
  --md-sys-surface: rgba(
    255,
    255,
    255,
    0.05
  ); /* Slightly more visible surface */
  --md-sys-on-surface: #f0f0f0;
  --md-sys-outline: rgba(255, 255, 255, 0.12);
  --md-sys-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);

  /* Legacy variables mapped to new tokens */
  --body-bg-color: var(--md-sys-bg);
  --text-color: var(--md-sys-on-surface);
  --text-color-darker: #b3b3b3; /* Keep for specific nuances */
  --text-color-white: #ffffff;
  --accent-color: var(--md-sys-primary);
  --accent-color-rgb: 103, 80, 164;
  --glass-bg: var(--md-sys-surface);
  --glass-bg-optimized: rgba(38, 38, 38, 0.85); /* Darker for better contrast */
  --glass-border-color: var(--md-sys-outline);
  --shadow-color: rgba(0, 0, 0, 0.25);
  --glow-color: rgba(var(--accent-color-rgb), 0.2);
  --input-bg: rgba(255, 255, 255, 0.05);
  --repo-card-bg: var(--md-sys-surface);
  --repo-card-hover-bg: rgba(255, 255, 255, 0.1);
  --subscribe-btn-bg: var(--md-sys-primary);
  --error-color: #ef4444;
  --success-color: #22c55e;
  --theme-switcher-bg: rgba(0, 0, 0, 0.5);
}

html.light-theme {
  --md-sys-bg: #f5f5f7;
  --md-sys-surface: rgba(255, 255, 255, 0.7);
  --md-sys-on-surface: #1d1d1f;
  --md-sys-outline: rgba(0, 0, 0, 0.1);
  --md-sys-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);

  --text-color-darker: #6e6e73;
  --text-color-white: #000000;
  --shadow-color: rgba(0, 0, 0, 0.05);
  --glass-bg-optimized: rgba(255, 255, 255, 0.85);
  --input-bg: rgba(0, 0, 0, 0.03);
  --repo-card-bg: rgba(255, 255, 255, 0.6);
  --repo-card-hover-bg: rgba(255, 255, 255, 0.9);
}

/* --- Global Reset & Base --- */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
  font-family: Inter, system-ui, -apple-system, sans-serif;
}
body {
  background-color: var(--md-sys-bg);
  color: var(--md-sys-on-surface);
  transition: background-color 0.4s ease, color 0.4s ease;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
}

/* Scrollbar hidden */
html::-webkit-scrollbar,
body::-webkit-scrollbar {
  display: none;
}
html,
body {
  scrollbar-width: none;
  -ms-overflow-style: none;
}

/* Typography */
h1 {
  font-size: clamp(1.5rem, 3vw, 2.5rem);
  font-weight: 700;
  margin-bottom: 1rem;
  color: var(--text-color-white);
}
h2 {
  font-size: clamp(1.25rem, 2.5vw, 2rem);
  font-weight: 700;
  color: var(--text-color-white);
  margin-bottom: 1.5rem;
}
h3 {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-color-white);
  margin-bottom: 1rem;
}
p {
  line-height: 1.6;
  margin-bottom: 1rem;
  color: var(--md-sys-on-surface);
}
a {
  color: var(--accent-color);
  text-decoration: none;
  transition: opacity 0.2s;
}
a:hover {
  opacity: 0.8;
}

/* --- Material You Components --- */

/* App Bar */
.mui-appbar {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 24px;
  border-radius: 999px; /* Pill shape */
  background: var(--glass-bg-optimized);
  border: 1px solid var(--md-sys-outline);
  box-shadow: var(--md-sys-shadow);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transition: all 0.3s ease;
}
.mui-appbar.main-header {
  position: fixed;
  top: 20px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 100;
  max-width: 900px;
  width: calc(100% - 32px);
}
.header-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid var(--md-sys-outline);
}
.header-nav {
  display: flex;
  align-items: center;
  gap: 4px;
  margin-left: auto;
}
.header-nav button,
.header-nav a {
  background: transparent;
  border: none;
  color: var(--md-sys-on-surface);
  padding: 8px 16px;
  border-radius: 999px;
  font-weight: 600;
  cursor: pointer;
  font-size: 0.9rem;
  transition: all 0.2s ease;
}
.header-nav button:hover,
.header-nav a:hover,
.header-nav button.active {
  background-color: var(--md-sys-primary-container);
  color: var(--md-sys-on-primary-container);
}

/* Cards */
.mui-card,
.content-card,
.repo-card,
.book-card,
.glass-effect {
  background: var(--md-sys-surface);
  border: 1px solid var(--md-sys-outline);
  border-radius: 24px;
  padding: 24px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.repo-card:hover,
.book-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
  border-color: var(--accent-color);
}

/* Buttons */
.mui-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 24px;
  border-radius: 999px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
  border: none;
  font-size: 0.95rem;
}
.mui-button.contained,
.form-submit-button {
  background-color: var(--accent-color);
  color: var(--md-sys-on-primary);
  box-shadow: 0 4px 12px rgba(var(--accent-color-rgb), 0.3);
}
.mui-button.contained:hover,
.form-submit-button:hover {
  opacity: 0.9;
  box-shadow: 0 6px 16px rgba(var(--accent-color-rgb), 0.4);
  transform: translateY(-1px);
}
.mui-button.outlined {
  background: transparent;
  color: var(--accent-color);
  border: 1px solid var(--md-sys-outline);
}
.mui-button.outlined:hover {
  background: var(--md-sys-primary-container);
  color: var(--md-sys-on-primary-container);
  border-color: transparent;
}

/* --- Layout --- */
.mui-container,
.content-section {
  max-width: 1100px;
  margin: 0 auto;
  padding: 2rem;
  width: 100%;
}
.initial-hero-section {
  min-height: 80vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  padding-top: 6rem;
}
.hero-text-container {
  font-size: clamp(2.5rem, 8vw, 4.5rem);
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: 2rem;
  color: var(--text-color-white);
}

/* --- Specific Components --- */

/* Player (kept similar but themed) */
.custom-player {
  display: flex;
  align-items: center;
  gap: 1rem;
  width: 100%;
  background: var(--md-sys-surface);
  border: 1px solid var(--md-sys-outline);
  padding: 1rem;
  border-radius: 16px;
}
.custom-player-cover {
  width: 56px;
  height: 56px;
  border-radius: 12px;
  object-fit: cover;
}
.custom-player-info-wrapper {
  flex: 1;
  overflow: hidden;
}
.custom-player-title {
  font-weight: 600;
  color: var(--text-color-white);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.custom-player-artist {
  font-size: 0.85rem;
  color: var(--text-color-darker);
}
.custom-player-controls button {
  background: none;
  border: none;
  color: var(--md-sys-on-surface);
  font-size: 1.5rem;
  padding: 8px;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
}
.custom-player-controls button:hover {
  background: rgba(255, 255, 255, 0.1);
}

/* Inputs (Contact Form) */
.form-group label {
  display: block;
  margin-bottom: 0.5rem;
  color: var(--md-sys-on-surface);
  font-size: 0.9rem;
}
.form-group input,
.form-group textarea,
.contact-input-group {
  width: 100%;
  padding: 12px 16px;
  border-radius: 12px;
  background: var(--input-bg);
  border: 1px solid var(--md-sys-outline);
  color: var(--md-sys-on-surface);
  font-family: inherit;
  font-size: 1rem;
  transition: all 0.2s ease;
}
.form-group input:focus,
.form-group textarea:focus,
.contact-input-group:focus-within {
  border-color: var(--accent-color);
  outline: none;
  box-shadow: 0 0 0 2px rgba(var(--accent-color-rgb), 0.2);
}
.contact-input-group {
  display: flex;
  padding: 0;
}
.contact-input-group input {
  border: none;
  background: transparent;
  padding: 12px 16px;
  flex-grow: 1;
}
.custom-select-wrapper {
  border-right: 1px solid var(--md-sys-outline);
  width: 130px;
}
.custom-select-trigger {
  padding: 12px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  user-select: none;
}

/* Footer */
.footer-section,
.site-footer {
  padding: 3rem 2rem;
  text-align: center;
  color: var(--text-color-darker);
  border-top: 1px solid var(--md-sys-outline);
  margin-top: 4rem;
}
.icon-links-bar {
  display: flex;
  justify-content: center;
  gap: 1.5rem;
  flex-wrap: wrap;
  margin-bottom: 2rem;
}
.icon-link {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.9rem;
  color: var(--md-sys-on-surface);
}

/* --- Mobile Responsiveness --- */
@media (max-width: 768px) {
  .mui-appbar.main-header {
    top: 12px;
    width: calc(100% - 24px);
    padding: 10px 16px;
  }
  .header-nav {
    display: none; /* Hide nav on mobile for now or implement menu */
  }
  .initial-hero-section {
    align-items: center;
    padding-top: 8rem;
  }
  .hero-text-container {
    font-size: 2.5rem;
  }
  .mui-container {
    padding: 0.75rem;
  }
}

/* --- Misc Utilities --- */
#particle-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
  pointer-events: none;
}
.loader {
  width: 24px;
  height: 24px;
  border: 3px solid rgba(255, 255, 255, 0.3);
  border-top-color: white;
  border-radius: 50%;
  animation: spin 1s linear infinite;
}
@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}
.error-message {
  color: var(--error-color);
  font-size: 0.85rem;
  margin-top: 0.5rem;
  display: none;
}
.form-group.error-state .error-message {
  display: block;
}

/* --- Extracted from HTML --- */

/* Removed duplicate :root from index.html */

/* Removed duplicate light-theme from index.html */

      /* --- 2. 全局样式重置和基础设定 --- */
      * {
        margin: 0;
        padding: 0;
        box-sizing: border-box;
      }
      html,
      body {
        scrollbar-width: none;
        -ms-overflow-style: none;
      }
      html::-webkit-scrollbar,
      body::-webkit-scrollbar {
        display: none;
      }
      html {
        scroll-behavior: smooth;
      }
      body {
        display: flex;
        flex-direction: column;
        min-height: 100vh;
        background-color: var(--body-bg-color);
        font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI",
          Roboto, "Helvetica Neue", Arial, sans-serif;
        color: var(--text-color);
        overflow-x: hidden;
        -webkit-font-smoothing: antialiased;
        -moz-osx-font-smoothing: grayscale;
        transition: background-color 0.4s ease, color 0.4s ease;
      }

      /* --- 3. 通用工具类 与 页面加载动画 --- */
      .glass-effect {
        position: relative;
        background: var(--glass-bg-optimized);
        background-clip: padding-box;
        border: 1px solid var(--glass-border-color);
        border-radius: 24px;
        box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.15),
          0 8px 32px 0 var(--shadow-color), 0 0 15px var(--glow-color);
        overflow: hidden;
        transition: background 0.4s ease, border-color 0.4s ease,
          box-shadow 0.4s ease;
      }
      .glass-effect::before {
        display: none;
      }
      .error-message {
        color: var(--error-color);
        font-size: 0.9rem;
        text-align: center;
        padding: 1rem;
        background: rgba(239, 68, 68, 0.1);
        border: 1px solid rgba(239, 68, 68, 0.3);
        border-radius: 12px;
        margin-top: 1rem;
      }
      #loader-wrapper {
        position: fixed;
        top: 0;
        left: 0;
        width: 100vw;
        height: 100vh;
        z-index: 9999;
        background-color: var(--body-bg-color);
        display: flex;
        justify-content: center;
        align-items: center;
        transition: opacity 0.8s ease-out, visibility 0.8s ease-out;
        opacity: 1;
        visibility: visible;
      }
      #loader-wrapper.is-hidden {
        opacity: 0;
        visibility: hidden;
        pointer-events: none;
      }
      .loader-container {
        position: relative;
        width: 100px;
        height: 100px;
      }
      .loader-core {
        position: absolute;
        top: 50%;
        left: 50%;
        width: 20px;
        height: 20px;
        background-color: var(--accent-color);
        border-radius: 50%;
        transform: translate(-50%, -50%);
        box-shadow: 0 0 15px var(--accent-color), 0 0 30px var(--accent-color);
        animation: pulse-core 2s infinite ease-in-out;
      }
      .loader-electron {
        position: absolute;
        top: 50%;
        left: 50%;
        width: 8px;
        height: 8px;
        margin: -4px;
        background-color: var(--text-color-white);
        border-radius: 50%;
        box-shadow: 0 0 5px var(--text-color-white);
        animation-name: orbit;
        animation-duration: 4s;
        animation-timing-function: linear;
        animation-iteration-count: infinite;
      }
      .loader-electron:nth-child(2) {
        animation-delay: -1.33s;
        animation-name: orbit-reverse;
      }
      .loader-electron:nth-child(3) {
        animation-delay: -2.66s;
        animation-name: orbit-vertical;
      }

      /* --- 4. 布局与主要容器样式 --- */
      #particle-canvas {
        position: fixed;
        top: 0;
        left: 0;
        width: 100vw;
        height: 100vh;
        z-index: -1;
      }
      #app {
        display: flex;
        flex-direction: column;
        flex-grow: 1;
        width: 100%;
        position: relative;
      }
      .main-content {
        flex-grow: 1;
      }
      .content-section {
        padding: 4rem 2rem;
        max-width: 1000px;
        margin: 0 auto;
      }
      .content-section:first-of-type {
        padding-top: 8rem;
      }
      .content-card {
        padding: 2rem;
        margin-bottom: 3rem;
        box-shadow: none;
      }
      .content-card h2 {
        font-size: 1.5rem;
        font-weight: 700;
        color: var(--text-color-white);
        margin-bottom: 2rem;
        text-align: center;
      }
      .content-card h3 {
        font-size: 1.25rem;
        font-weight: 600;
        color: var(--text-color-white);
        margin-bottom: 1.5rem;
      }

      /* --- 5. 组件样式 --- */
      .scroll-indicator {
        position: fixed;
        top: 0;
        right: 5px;
        width: 10px;
        height: 100vh;
        z-index: 50;
        pointer-events: none;
        opacity: 0;
        transition: opacity 0.5s ease;
      }
      .scroll-indicator.is-scrolling {
        opacity: 1;
      }
      .scroll-star {
        position: absolute;
        top: 0;
        left: 50%;
        width: 6px;
        height: 6px;
        border-radius: 50%;
        background-color: var(--accent-color);
        box-shadow: 0 0 10px var(--accent-color), 0 0 20px var(--accent-color);
        transition: transform 0.1s linear;
      }
      .main-header {
        position: fixed;
        top: 20px;
        left: 50%;
        transform: translateX(-50%);
        z-index: 20;
        display: flex;
        align-items: center;
        padding: 8px;
        border-radius: 999px;
        transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
        opacity: 0;
        pointer-events: none;
        backdrop-filter: blur(10px);
        -webkit-backdrop-filter: blur(10px);
      }
      .main-header.is-visible {
        opacity: 1;
        pointer-events: auto;
      }
      .header-avatar {
        width: 44px;
        height: 44px;
        border-radius: 50%;
        object-fit: cover;
        flex-shrink: 0;
        cursor: pointer;
        border: 2px solid rgba(255, 255, 255, 0.2);
      }
      .header-nav {
        display: flex;
        align-items: center;
        max-width: 0;
        opacity: 0;
        overflow: hidden;
        white-space: nowrap;
        transition: max-width 0.4s ease-in-out, opacity 0.2s 0.1s ease-in-out,
          margin-left 0.4s ease-in-out;
        margin-left: 0;
      }
      .main-header.is-expanded .header-nav {
        max-width: 800px;
        opacity: 1;
        margin-left: 12px;
      }
      .header-nav button {
        background: none;
        border: none;
        font-family: inherit;
        font-size: 0.95rem;
        font-weight: 500;
        color: var(--text-color-darker);
        text-decoration: none;
        padding: 0 0.8rem;
        transition: color 0.3s ease;
        cursor: pointer;
      }
      .header-nav button:hover,
      .header-nav button.active {
        color: var(--text-color-white);
      }
      .initial-hero-section {
        min-height: 100vh;
        display: flex;
        flex-direction: column;
        justify-content: center;
        align-items: center;
        text-align: center;
        padding: 2rem;
        position: relative;
        transition: padding-bottom 0.5s ease-in-out;
        overflow: hidden;
      }
      /* Danmaku styles removed */
      .hero-text-container,
      .hero-bottom-content {
        position: relative;
        z-index: 1;
      }
      .hero-text-container {
        font-weight: 800;
        /* Restored larger hero size to match pre-refactor visuals */
        font-size: clamp(2.5rem, 10vw, 5rem);
        color: var(--text-color-white);
        line-height: 1.2;
        z-index: 3;
      }
      .hero-text-container p {
        min-height: 1.2em;
      }
      .typing-cursor-hero {
        display: inline-block;
        width: 0.1em;
        height: 1em;
        background-color: var(--text-color-white);
        animation: blink 0.7s infinite;
      }
      .waving-hand {
        display: inline-block;
        animation: wave 2.5s infinite;
        transform-origin: 70% 70%;
      }
      .hero-bottom-content {
        opacity: 0;
        transition: opacity 0.5s ease-in-out;
        width: 100%;
        display: flex;
        flex-direction: column;
        align-items: center;
        gap: 3rem;
        margin-top: 4rem;
        z-index: 3;
      }
      .hero-bottom-content.visible {
        opacity: 1;
      }
      .play-button {
        display: flex;
        justify-content: center;
        align-items: center;
        width: 60px;
        height: 60px;
        border-radius: 50%;
        color: var(--text-color);
        transition: all 0.3s ease;
      }
      .play-button:hover {
        transform: translateY(-5px) scale(1.05);
        color: var(--text-color-white);
        box-shadow: 0 0 20px var(--glow-color);
      }
      .play-button i {
        width: 28px;
        height: 28px;
        font-size: 28px;
      }
      .hero-player-container {
        margin-top: 0;
        width: 100%;
        max-width: 1000px;
        padding: 0 2rem;
        min-height: 95px;
        display: flex;
        justify-content: center;
        align-items: center;
        position: relative;
      }
      .player-wrapper {
        transition: all 0.5s ease-in-out;
        width: 100%;
        border-radius: 16px !important;
        border: 1px solid var(--glass-border-color) !important;
        padding: 1rem;
      }
      .play-button,
      .loading-spinner {
        border: none;
        padding: 0;
        cursor: pointer;
        position: absolute;
      }
      .play-button i,
      .loading-spinner i {
        margin: 0;
      }
      #player-hidden {
        display: none;
      }
      .custom-player {
        display: flex;
        align-items: center;
        gap: 1rem;
        width: 100%;
      }
      .custom-player-cover {
        width: 60px;
        height: 60px;
        border-radius: 8px;
        object-fit: cover;
        flex-shrink: 0;
      }
      .custom-player-info-wrapper {
        flex-grow: 1;
        overflow: hidden;
        display: flex;
        flex-direction: column;
        justify-content: center;
        gap: 8px;
      }
      .custom-player-info {
        text-align: left;
      }
      .custom-player-title {
        font-size: 1rem;
        font-weight: 600;
        color: var(--text-color-white);
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
      }
      .custom-player-artist {
        font-size: 0.85rem;
        color: var(--text-color-darker);
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
      }
      .custom-player-progress-container {
        width: 100%;
        height: 4px;
        background: rgba(255, 255, 255, 0.1);
        border-radius: 2px;
        cursor: pointer;
      }
      .custom-player-progress-bar {
        height: 100%;
        background-color: var(--accent-color);
        border-radius: 2px;
        position: relative;
      }
      .custom-player-progress-bar::after {
        content: "";
        position: absolute;
        right: -6px;
        top: -4px;
        width: 12px;
        height: 12px;
        background-color: var(--text-color-white);
        border-radius: 50%;
      }
      .custom-player-controls {
        display: flex;
        align-items: center;
        gap: 0.5rem;
      }
      .custom-player-controls button {
        background: none;
        border: none;
        color: var(--text-color-darker);
        cursor: pointer;
        font-size: 1.75rem;
        padding: 0.5rem;
        border-radius: 50%;
        display: flex;
        align-items: center;
        justify-content: center;
        transition: all 0.2s ease;
      }
      .custom-player-controls .playback-rate-btn {
        font-size: 0.9rem;
        font-weight: 600;
        width: 44px;
        height: 44px;
        padding: 0;
      }
      .custom-player-controls button:hover {
        color: var(--text-color-white);
        background: rgba(255, 255, 255, 0.1);
      }
      .custom-player-controls button.active {
        color: var(--accent-color);
      }
      .loading-spinner {
        width: 60px;
        height: 60px;
        border: 4px solid var(--glass-border-color);
        border-top-color: var(--accent-color);
        border-radius: 50%;
        animation: spin 1s linear infinite;
      }
      .volume-control-wrapper {
        display: flex;
        align-items: center;
        gap: 0.5rem;
        margin-right: 0.5rem;
      }
      .volume-control-wrapper i {
        font-size: 1.5rem;
        color: var(--text-color-darker);
      }
      input[type="range"].volume-slider {
        -webkit-appearance: none;
        appearance: none;
        width: 80px;
        background: transparent;
        cursor: pointer;
      }
      input[type="range"].volume-slider::-webkit-slider-runnable-track {
        height: 4px;
        background: linear-gradient(
          to right,
          var(--accent-color) 0%,
          var(--accent-color) var(--volume-percent, 70%),
          rgba(255, 255, 255, 0.1) var(--volume-percent, 70%),
          rgba(255, 255, 255, 0.1) 100%
        );
        border-radius: 2px;
      }
      input[type="range"].volume-slider::-webkit-slider-thumb {
        -webkit-appearance: none;
        appearance: none;
        margin-top: -4px;
        height: 12px;
        width: 12px;
        border-radius: 50%;
        background: var(--text-color-white);
      }
      input[type="range"].volume-slider::-moz-range-track {
        background-color: rgba(255, 255, 255, 0.1);
        height: 4px;
        border-radius: 2px;
      }
      input[type="range"].volume-slider::-moz-range-progress {
        background-color: var(--accent-color);
        height: 4px;
        border-radius: 2px;
      }
      input[type="range"].volume-slider::-moz-range-thumb {
        height: 12px;
        width: 12px;
        border-radius: 50%;
        background: var(--text-color-white);
        border: none;
      }
      .custom-lrc-container {
        height: 60px;
        margin-top: 1rem;
        overflow: hidden;
        text-align: center;
      }
      .aplayer-lrc {
        padding: 0 !important;
        margin: 0 !important;
        text-shadow: none !important;
        background: none !important;
        height: 100%;
      }
      .aplayer-lrc-contents {
        display: flex;
        flex-direction: column;
        height: 100%;
        padding-top: 25px;
        padding-bottom: 25px;
      }
      .aplayer-lrc p {
        font-size: 1rem;
        font-weight: 700;
        color: var(--text-color-darker);
        padding: 4px 0;
        margin: 0;
        line-height: 1.5;
        transition: color 0.4s ease-in-out, opacity 0.4s ease-in-out;
        opacity: 0.5;
        flex-shrink: 0;
      }
      .aplayer-lrc p.aplayer-lrc-current {
        color: var(--text-color-white);
        opacity: 1;
      }
      .playlist-container,
      .songlist-switcher {
        max-height: 0;
        overflow-y: auto;
        transition: max-height 0.5s ease-in-out, margin-top 0.5s ease-in-out,
          padding-top 0.5s ease-in-out;
        border-top: 1px solid transparent;
        margin-top: 0;
        padding-top: 0;
      }
      .playlist-container.show,
      .songlist-switcher.show {
        max-height: 250px;
        margin-top: 1rem;
        padding-top: 0.5rem;
        border-top-color: var(--glass-border-color);
      }
      .playlist-container::-webkit-scrollbar,
      .songlist-switcher ul::-webkit-scrollbar {
        width: 10px;
      }
      .playlist-container::-webkit-scrollbar-track {
        background: transparent;
      }
      .playlist-container::-webkit-scrollbar-thumb,
      .songlist-switcher ul::-webkit-scrollbar-thumb {
        background-color: var(--accent-color);
        border-radius: 10px;
        border: 3px solid transparent;
        background-clip: content-box;
      }
      .playlist-item {
        display: flex;
        align-items: center;
        padding: 0.5rem 1rem;
        cursor: pointer;
        border-radius: 8px;
        transition: background-color 0.2s;
      }
      .playlist-item:hover {
        background-color: var(--repo-card-hover-bg);
      }
      .playlist-item.active {
        background-color: var(--repo-card-bg);
      }
      .playlist-item .index {
        color: var(--text-color-darker);
        margin-right: 1rem;
        width: 1.5rem;
        text-align: right;
      }
      .playlist-item .info {
        text-align: left;
        overflow: hidden;
        white-space: nowrap;
      }
      .playlist-item .title {
        color: var(--text-color);
        text-overflow: ellipsis;
        overflow: hidden;
      }
      .playlist-item .artist {
        font-size: 0.8rem;
        color: var(--text-color-darker);
        text-overflow: ellipsis;
        overflow: hidden;
      }
      .songlist-switcher.show {
        max-height: 400px;
      }
      .songlist-switcher h4,
      .songlist-switcher h5 {
        padding: 0 1rem;
        margin-bottom: 0.5rem;
        color: var(--text-color-white);
      }
      .songlist-switcher h5 {
        margin-top: 1rem;
        font-size: 0.9em;
        color: var(--text-color-darker);
      }
      .songlist-switcher ul {
        list-style: none;
        padding: 0;
        margin: 0;
        max-height: 150px;
        overflow-y: auto;
      }
      .songlist-switcher li {
        padding: 0.5rem 1rem;
        cursor: pointer;
        border-radius: 8px;
        transition: background-color 0.2s;
        font-size: 0.9rem;
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
        display: flex;
        justify-content: space-between;
        align-items: center;
      }
      .songlist-switcher li > span {
        overflow: hidden;
        text-overflow: ellipsis;
      }
      .songlist-switcher li:hover {
        background-color: var(--repo-card-hover-bg);
      }
      .songlist-switcher li.active {
        background-color: var(--repo-card-bg);
        color: var(--accent-color);
        font-weight: 500;
      }
      .songlist-switcher .remove-btn {
        background: none;
        border: none;
        color: var(--text-color-darker);
        cursor: pointer;
        font-size: 1.2rem;
        padding: 0.25rem;
        line-height: 1;
        border-radius: 50%;
        margin-left: 1rem;
        flex-shrink: 0;
      }
      .songlist-switcher .remove-btn:hover {
        color: var(--error-color);
        background-color: rgba(239, 68, 68, 0.1);
      }
      .songlist-input-group {
        display: flex;
        flex-direction: column;
        gap: 0.75rem;
        padding: 1rem 1rem 0.5rem;
      }
      .songlist-input-row {
        display: flex;
        gap: 0.5rem;
      }
      .songlist-input-group input {
        flex-grow: 1;
        background: var(--input-bg);
        border: 1px solid var(--glass-border-color);
        border-radius: 8px;
        padding: 0.5rem 0.75rem;
        color: var(--text-color);
        font-size: 0.9rem;
      }
      .songlist-input-group input:focus {
        outline: none;
        border-color: var(--accent-color);
      }
      .songlist-input-group button {
        background: var(--subscribe-btn-bg);
        border: none;
        color: white;
        padding: 0.5rem 1rem;
        border-radius: 8px;
        cursor: pointer;
        font-size: 0.9rem;
        transition: opacity 0.2s;
        width: 100%;
      }
      .songlist-input-group button:hover {
        opacity: 0.9;
      }
      .modal-overlay {
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background-color: rgba(0, 0, 0, 0.5);
        display: flex;
        justify-content: center;
        align-items: center;
        z-index: 30;
        opacity: 0;
        pointer-events: none;
        transition: opacity 0.3s ease;
        backdrop-filter: blur(10px);
        -webkit-backdrop-filter: blur(10px);
      }
      .modal-overlay.is-visible {
        opacity: 1;
        pointer-events: auto;
      }
      .modal-container {
        transform: scale(0.95);
        transition: transform 0.3s ease;
      }
      .modal-overlay.is-visible .modal-container {
        transform: scale(1);
      }
      .modal-card-container {
        padding: 1rem;
        max-width: 90vw;
        display: flex;
        justify-content: center;
        align-items: center;
      }
      .modal-card {
        padding: 2.5rem;
      }
      .modal-card:not(.book-modal-card) {
        width: 400px;
        max-width: 100%;
        text-align: center;
      }
      .modal-card h3 {
        color: var(--text-color-white);
        font-size: 1.5rem;
        margin-bottom: 2rem;
      }
      .modal-status-message {
        min-height: 1.2em;
        font-size: 0.9em;
        margin-bottom: 1rem;
        font-weight: 500;
      }
      .modal-status-message.success {
        color: var(--success-color);
      }
      .modal-status-message.error {
        color: var(--error-color);
      }
      .form-group {
        margin-bottom: 1.5rem;
        text-align: left;
      }
      .form-group label {
        display: block;
        margin-bottom: 0.5rem;
        font-size: 0.9rem;
        color: var(--text-color-darker);
      }
      .form-group input,
      .form-group textarea {
        width: 100%;
        padding: 0.8rem 1rem;
        border-radius: 12px;
        border: 1px solid var(--glass-border-color);
        color: var(--text-color);
        font-size: 1rem;
        transition: all 0.3s ease;
        background: var(--input-bg);
        font-family: inherit;
      }
      .form-group textarea {
        resize: vertical;
        min-height: 100px;
      }
      .form-group input:focus,
      .form-group textarea:focus {
        outline: none;
        border-color: var(--accent-color);
        box-shadow: 0 0 0 2px var(--accent-color);
      }
      .form-submit-button {
        width: 100%;
        padding: 0.8rem 1rem;
        border: none;
        background-color: var(--subscribe-btn-bg);
        color: white;
        font-size: 1rem;
        font-weight: 500;
        border-radius: 12px;
        cursor: pointer;
        transition: all 0.3s ease;
        position: relative;
      }
      .form-submit-button .ph-spinner-gap {
        animation: spin 1s linear infinite;
        position: absolute;
        left: 20%;
      }
      .form-submit-button:hover {
        opacity: 0.9;
        transform: translateY(-2px);
      }
      .form-submit-button:disabled {
        opacity: 0.6;
        cursor: not-allowed;
      }
      .about-us-card {
        display: flex;
        padding: 3rem;
        gap: 3rem;
      }
      .about-us-card h2 {
        text-align: left;
      }
      .about-sidebar {
        display: flex;
        flex-direction: column;
        align-items: center;
        gap: 1.5rem;
      }
      .sidebar-line {
        width: 2px;
        height: 100%;
        background-color: var(--accent-color);
        flex-grow: 1;
      }
      .sidebar-text {
        writing-mode: vertical-rl;
        transform: rotate(180deg);
        color: var(--text-color-darker);
        font-size: 0.9rem;
        letter-spacing: 0.1em;
        white-space: nowrap;
      }
      .about-main-content {
        flex-grow: 1;
      }
      .about-main-content h2 {
        font-size: 1.1rem;
        font-weight: 500;
        color: var(--text-color-darker);
        margin-bottom: 1.5rem;
      }
      .about-main-content blockquote {
        position: relative;
        font-size: 2.5rem;
        font-weight: 700;
        line-height: 1.4;
        margin-left: 2rem;
        margin-bottom: 3rem;
        padding-left: 2rem;
        border-left: 2px solid var(--accent-color);
      }
      .about-main-content h3 {
        font-size: 1.25rem;
        font-weight: 600;
        color: var(--text-color-white);
        margin-bottom: 1rem;
      }
      .about-main-content p {
        font-size: 1rem;
        line-height: 1.8;
        color: var(--text-color-darker);
        margin-bottom: 2rem;
      }
      .about-main-content p strong {
        color: var(--accent-color);
        font-weight: 500;
      }
      .rd-philosophy {
        border-top: 1px solid var(--glass-border-color);
        padding-top: 2rem;
        margin-top: 2rem;
      }
      #interactive-journey {
        padding: 4rem 2rem;
        max-width: 1200px;
        margin: 0 auto;
        position: relative;
      }
      .hub-intro {
        text-align: center;
        max-width: 800px;
        margin: 0 auto 4rem;
      }
      .hub-intro h2 {
        font-size: 2.5rem;
        font-weight: 700;
        margin-bottom: 1rem;
        color: var(--text-color-white);
      }
      .hub-intro blockquote {
        position: relative;
        font-size: 1.5rem;
        font-weight: 500;
        line-height: 1.6;
        margin: 0 auto 1.5rem;
        max-width: 650px;
      }
      .hub-intro blockquote strong {
        color: var(--accent-color);
        font-weight: 600;
      }
      .hub-grid {
        display: grid;
        grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
        gap: 1.5rem;
      }
      .hub-node {
        background: var(--glass-bg);
        border: 1px solid var(--glass-border-color);
        border-radius: 20px;
        padding: 2rem;
        text-align: center;
        cursor: pointer;
        transition: transform 0.5s cubic-bezier(0.25, 0.8, 0.25, 1),
          box-shadow 0.5s cubic-bezier(0.25, 0.8, 0.25, 1),
          border-color 0.5s cubic-bezier(0.25, 0.8, 0.25, 1);
        box-shadow: 0 0 0 transparent, 0 0 0 transparent;
        position: relative;
        overflow: hidden;
      }
      .hub-node:hover {
        transform: translateY(-10px) scale(1.05);
        box-shadow: 0 10px 40px var(--shadow-color), 0 0 20px var(--glow-color);
        border-color: rgba(var(--accent-color-rgb), 0.5);
      }
      .hub-node i {
        font-size: 3rem;
        color: var(--accent-color);
        margin-bottom: 1rem;
        display: block;
        transition: transform 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
      }
      .hub-node:hover i {
        transform: scale(1.1);
      }
      .hub-node h3 {
        font-size: 1.25rem;
        color: var(--text-color-white);
        margin-bottom: 0.5rem;
        transition: color 0.3s ease-in-out;
      }
      .hub-node:hover h3 {
        color: var(--accent-color);
      }
      .hub-node p {
        font-size: 0.9rem;
        color: var(--text-color-darker);
        line-height: 1.5;
      }
      .journey-panel .content-card {
        margin-bottom: 0;
      }
      .close-panel-btn {
        position: absolute;
        top: 1.5rem;
        right: 1.5rem;
        background: var(--repo-card-bg);
        border: 1px solid var(--glass-border-color);
        color: var(--text-color);
        width: 44px;
        height: 44px;
        border-radius: 50%;
        cursor: pointer;
        font-size: 1.5rem;
        display: flex;
        align-items: center;
        justify-content: center;
        transition: all 0.3s ease;
        z-index: 10;
      }
      .close-panel-btn:hover {
        background: var(--accent-color);
        color: #121212;
        transform: scale(1.1) rotate(90deg);
      }
      .panel-content-grid {
        display: grid;
        grid-template-columns: 1fr;
        gap: 2rem;
      }
      @media (min-width: 768px) {
        .panel-content-grid {
          grid-template-columns: repeat(2, 1fr);
        }
      }
      .resume-header {
        text-align: center;
        margin-bottom: 2rem;
        padding-bottom: 2rem;
        border-bottom: 1px solid var(--glass-border-color);
      }
      .resume-header h1 {
        font-size: 2.5rem;
        color: var(--text-color-white);
        font-weight: 700;
        margin-bottom: 0.5rem;
      }
      .resume-contact {
        display: flex;
        justify-content: center;
        align-items: center;
        flex-wrap: wrap;
        gap: 1rem 2rem;
        color: var(--text-color-darker);
      }
      .resume-contact-item {
        display: flex;
        align-items: center;
        gap: 0.5rem;
      }
      .resume-contact-item i {
        font-size: 1.2rem;
        color: var(--accent-color);
      }
      .resume-section {
        margin-bottom: 2.5rem;
      }
      .resume-section h3 {
        font-size: 1.25rem;
        font-weight: 600;
        color: var(--text-color-white);
        padding-bottom: 0.75rem;
        margin-bottom: 1.5rem;
        border-bottom: 1px solid var(--accent-color);
        display: inline-block;
      }
      .education-grid,
      .experience-grid {
        display: grid;
        gap: 1.5rem;
      }
      .education-item,
      .experience-item,
      .project-item {
        background: var(--repo-card-bg);
        padding: 1.5rem;
        border-radius: 16px;
      }
      .item-header {
        display: flex;
        justify-content: space-between;
        align-items: center;
        margin-bottom: 0.75rem;
        flex-wrap: wrap;
        gap: 0.5rem;
      }
      .item-header h4 {
        font-size: 1.1rem;
        font-weight: 600;
        color: var(--text-color);
      }
      .item-header .date {
        font-size: 0.9rem;
        color: var(--text-color-darker);
        font-weight: 500;
      }
      .item-subheader {
        font-size: 1rem;
        color: var(--text-color-darker);
        margin-bottom: 1rem;
        font-weight: 500;
      }
      .item-details p,
      .item-details ul {
        font-size: 0.95rem;
        line-height: 1.7;
        color: var(--text-color-darker);
      }
      .item-details ul {
        list-style-position: inside;
        padding-left: 0.5rem;
      }
      .item-details strong {
        color: var(--text-color);
        font-weight: 500;
      }
      .skills-container {
        display: flex;
        flex-wrap: wrap;
        gap: 1rem;
      }
      .skill-category {
        flex: 1 1 300px;
      }
      .skill-category h4 {
        font-size: 1.1rem;
        color: var(--text-color);
        margin-bottom: 1rem;
      }
      .skill-list {
        display: flex;
        flex-wrap: wrap;
        gap: 0.75rem;
      }
      .skill-tag {
        background-color: var(--repo-card-bg);
        color: var(--text-color);
        padding: 0.5rem 1rem;
        border-radius: 8px;
        font-size: 0.9rem;
        transition: all 0.2s ease;
      }
      .skill-tag:hover {
        background-color: var(--accent-color);
        color: #121212;
        transform: translateY(-2px);
      }
      .honors-list {
        display: grid;
        grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
        gap: 1rem;
      }
      .honor-item {
        background-color: var(--repo-card-bg);
        color: var(--text-color);
        padding: 1rem;
        border-radius: 12px;
        display: flex;
        align-items: center;
        gap: 1rem;
      }
      .honor-item i {
        font-size: 1.5rem;
        color: var(--accent-color);
      }

      /* 组件: 创造与知识面板 (Github & 书架) */
      .creations-tabs {
        display: flex;
        gap: 0.5rem;
        margin-bottom: 1.5rem;
        border-bottom: 1px solid var(--glass-border-color);
        padding: 0 1rem;
        /* 在小屏幕上使标签栏可以横向滚动 */
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
        scrollbar-width: none; /* 适用于 Firefox */
        -ms-overflow-style: none; /* 适用于 IE 和 Edge */
      }
      .creations-tabs::-webkit-scrollbar {
        display: none; /* 适用于 WebKit 内核浏览器 */
      }
      .tab-button {
        background: none;
        border: none;
        color: var(--text-color-darker);
        padding: 1rem;
        cursor: pointer;
        font-size: 1.05rem;
        font-weight: 500;
        position: relative;
        transition: color 0.3s ease;
        display: flex;
        align-items: center;
        gap: 0.5rem;
        flex-shrink: 0; /* 防止标签按钮被压缩 */
      }
      .tab-button::after {
        content: "";
        position: absolute;
        bottom: -1px;
        left: 0;
        width: 100%;
        height: 2px;
        background-color: var(--accent-color);
        transform: scaleX(0);
        transition: transform 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
      }
      .tab-button.active {
        color: var(--text-color-white);
      }
      .tab-button.active::after {
        transform: scaleX(1);
      }
      .tab-content {
        padding: 0.5rem 1rem;
      }
      .filters-container {
        display: flex;
        flex-wrap: wrap;
        gap: 1rem;
        margin-bottom: 2rem;
        align-items: center;
      }
      .filters-container .filter-group {
        display: flex;
        align-items: center;
        gap: 0.5rem;
        background-color: var(--repo-card-bg);
        padding: 0.5rem 1rem;
        border-radius: 12px;
      }
      .filters-container label {
        font-size: 0.9rem;
        color: var(--text-color-darker);
        font-weight: 500;
      }
      .filters-container select,
      .filters-container input {
        background: transparent;
        border: none;
        color: var(--text-color);
        font-family: inherit;
        font-size: 0.9rem;
      }
      .filters-container select:focus,
      .filters-container input:focus {
        outline: none;
      }
      .filters-container input {
        padding: 0.25rem;
        width: 120px;
      }
      .book-category-pills {
        display: flex;
        flex-wrap: wrap;
        gap: 0.75rem;
      }
      .book-category-pills button {
        background: var(--repo-card-bg);
        border: 1px solid transparent;
        color: var(--text-color-darker);
        padding: 0.5rem 1.25rem;
        border-radius: 999px;
        cursor: pointer;
        font-size: 0.9rem;
        transition: all 0.2s ease;
      }
      .book-category-pills button:hover {
        background: var(--repo-card-hover-bg);
        color: var(--text-color-white);
      }
      .book-category-pills button.active {
        background-color: var(--accent-color);
        color: #121212;
        font-weight: 600;
      }
      .repo-grid,
      .book-grid {
        display: grid;
        grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
        gap: 1.5rem;
      }
      .repo-card,
      .book-card {
        background: var(--repo-card-bg);
        padding: 1.5rem;
        border-radius: 16px;
        text-decoration: none;
        color: var(--text-color-darker);
        transition: all 0.3s ease;
        display: flex;
        flex-direction: column;
        position: relative;
        border: 1px solid transparent;
        overflow: hidden;
      }
      .book-card {
        align-items: center;
        text-align: center;
        cursor: pointer;
      }
      .repo-card:hover,
      .book-card:hover {
        background: var(--repo-card-hover-bg);
        transform: translateY(-5px);
        border-color: var(--glass-border-color);
      }
      .repo-card h3,
      .book-card h3 {
        color: var(--text-color-white);
        font-size: 1.1rem;
        margin-bottom: 0.5rem;
        word-break: break-all;
      }
      .book-card h3 {
        margin-top: 1rem;
      }
      .repo-card p,
      .book-card p {
        font-size: 0.9rem;
        line-height: 1.6;
        margin-bottom: 1rem;
        flex-grow: 1;
      }
      .book-card p {
        flex-grow: 0;
      }
      .book-cover {
        width: 100%;
        max-width: 150px;
        height: auto;
        aspect-ratio: 2 / 3;
        object-fit: cover;
        border-radius: 8px;
        display: block;
        box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
      }
      .book-status-tag {
        position: absolute;
        top: 1rem;
        right: 1rem;
        font-size: 0.75rem;
        font-weight: 600;
        padding: 0.25rem 0.6rem;
        border-radius: 999px;
        text-transform: uppercase;
      }
      .book-status-tag.reading {
        background-color: rgba(59, 130, 246, 0.2);
        color: #60a5fa;
      }
      .book-status-tag.read {
        background-color: rgba(34, 197, 94, 0.2);
        color: #4ade80;
      }
      .repo-stats {
        display: flex;
        flex-wrap: wrap;
        gap: 1rem;
        font-size: 0.85rem;
        align-items: center;
      }
      .repo-stats span {
        display: flex;
        align-items: center;
        gap: 0.25rem;
      }
      .repo-stats svg {
        width: 14px;
        height: 14px;
      }
      .skeleton-card {
        background: var(--repo-card-bg);
        padding: 1.5rem;
        border-radius: 16px;
      }
      .skeleton-line {
        background: var(--repo-card-hover-bg);
        border-radius: 8px;
        animation: pulse-bg 1.5s infinite ease-in-out;
      }
      .skeleton-line.h-6 {
        height: 1.5rem;
        width: 60%;
        margin-bottom: 1rem;
      }
      .skeleton-line.h-4 {
        height: 1rem;
      }
      .skeleton-line.w-full {
        width: 100%;
        margin-bottom: 0.75rem;
      }
      .skeleton-line.w-80 {
        width: 80%;
        margin-bottom: 1.25rem;
      }
      .skeleton-line.w-40 {
        width: 40%;
      }
      .skeleton-footer {
        display: flex;
        gap: 1rem;
      }
      .github-overview {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
        gap: 1.5rem;
        margin-bottom: 2rem;
      }
      .stat-card {
        background-color: var(--repo-card-bg);
        padding: 1.5rem;
        border-radius: 16px;
        text-align: center;
      }
      .stat-card .stat-value {
        font-size: 2rem;
        font-weight: 700;
        color: var(--accent-color);
      }
      .stat-card .stat-label {
        font-size: 0.9rem;
        color: var(--text-color-darker);
        margin-top: 0.5rem;
      }
      .pinned-repo-card {
        border: 1px solid rgba(var(--accent-color-rgb), 0.3);
      }
      .pinned-repo-card::before {
        content: "Pinned";
        position: absolute;
        top: 15px;
        right: -35px;
        background: var(--accent-color);
        color: #121212;
        width: 120px;
        text-align: center;
        padding: 4px 0;
        font-size: 0.8rem;
        font-weight: 600;
        transform: rotate(45deg);
        z-index: 2;
      }
      .load-more-btn {
        width: 100%;
        padding: 0.8rem 1rem;
        margin-top: 1.5rem;
        border: none;
        background-color: var(--repo-card-bg);
        color: var(--text-color);
        font-size: 1rem;
        font-weight: 500;
        border-radius: 12px;
        cursor: pointer;
        transition: all 0.3s ease;
        display: flex;
        align-items: center;
        justify-content: center;
        gap: 0.5rem;
      }
      .load-more-btn:hover {
        background-color: var(--repo-card-hover-bg);
      }
      .load-more-btn:disabled {
        opacity: 0.6;
        cursor: not-allowed;
      }
      .book-modal-card {
        width: 600px;
        padding: 0;
        max-height: 90vh;
        display: flex;
        flex-direction: column;
      }
      .book-modal-content {
        display: flex;
        gap: 2rem;
        padding: 2.5rem;
      }
      .book-modal-cover {
        width: 180px;
        flex-shrink: 0;
      }
      .book-modal-cover img {
        width: 100%;
        height: auto;
        border-radius: 12px;
      }
      .book-modal-details {
        text-align: left;
      }
      .book-modal-details h3 {
        margin: 0 0 0.5rem;
        font-size: 1.8rem;
      }
      .book-modal-details .author {
        color: var(--text-color-darker);
        font-size: 1.1rem;
        margin-bottom: 1.5rem;
      }
      .rating-stars {
        color: #facc15;
        font-size: 1.2rem;
        margin-bottom: 1.5rem;
      }
      .book-modal-details .review {
        font-size: 1rem;
        line-height: 1.7;
        color: var(--text-color);
        font-style: italic;
        border-left: 2px solid var(--accent-color);
        padding-left: 1rem;
      }
      .book-modal-footer {
        margin-top: auto;
        background: var(--repo-card-bg);
        padding: 1rem 2.5rem;
        border-top: 1px solid var(--glass-border-color);
        display: flex;
        justify-content: flex-end;
      }
      .book-modal-link {
        background: var(--subscribe-btn-bg);
        color: white;
        text-decoration: none;
        padding: 0.6rem 1.2rem;
        border-radius: 8px;
        transition: opacity 0.2s;
      }
      .book-modal-link:hover {
        opacity: 0.9;
      }
      .activity-feed {
        max-height: 600px;
        overflow-y: auto;
        padding-right: 1rem;
      }
      .activity-feed::-webkit-scrollbar {
        width: 6px;
      }
      .activity-feed::-webkit-scrollbar-thumb {
        background-color: var(--accent-color);
        border-radius: 6px;
      }
      .activity-item {
        display: flex;
        gap: 1.5rem;
        position: relative;
        padding-bottom: 2rem;
      }
      .activity-item:last-child {
        padding-bottom: 0.5rem;
      }
      .activity-item:last-child::before {
        display: none;
      }
      .activity-item::before {
        content: "";
        position: absolute;
        left: 1.125rem;
        top: 2.25rem;
        width: 2px;
        height: 100%;
        background-color: var(--repo-card-bg);
      }
      .activity-icon {
        width: 2.25rem;
        height: 2.25rem;
        border-radius: 50%;
        background: var(--repo-card-bg);
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 1.25rem;
        flex-shrink: 0;
        z-index: 1;
      }
      .activity-content {
        padding-top: 0.25rem;
      }
      .activity-text {
        line-height: 1.6;
      }
      .activity-text strong {
        color: var(--text-color-white);
        font-weight: 500;
      }
      .activity-date {
        font-size: 0.85rem;
        color: var(--text-color-darker);
        margin-top: 0.25rem;
      }

      .blog-panel-content {
        display: flex;
        min-height: 80vh;
      }
      .blog-sidebar {
        width: 300px;
        flex-shrink: 0;
        border-right: 1px solid var(--glass-border-color);
        padding-right: 1.5rem;
        height: 80vh;
        display: flex;
        flex-direction: column;
      }
      .blog-category-filter {
        padding-bottom: 1rem;
        margin-bottom: 1rem;
        border-bottom: 1px solid var(--glass-border-color);
        display: flex;
        flex-wrap: wrap;
        gap: 0.5rem;
      }
      .blog-category-filter button {
        background: var(--repo-card-bg);
        border: 1px solid transparent;
        color: var(--text-color-darker);
        padding: 0.5rem 1rem;
        border-radius: 999px;
        cursor: pointer;
        font-size: 0.9rem;
        transition: all 0.2s ease;
      }
      .blog-category-filter button:hover {
        background: var(--repo-card-hover-bg);
        color: var(--text-color-white);
      }
      .blog-category-filter button.active {
        background-color: var(--accent-color);
        color: #121212;
        font-weight: 600;
        border-color: var(--accent-color);
      }
      .blog-post-list-container {
        flex-grow: 1;
        overflow-y: auto;
      }
      .blog-post-list-container::-webkit-scrollbar {
        width: 6px;
      }
      .blog-post-list-container::-webkit-scrollbar-thumb {
        background-color: var(--accent-color);
        border-radius: 6px;
      }
      .blog-post-item {
        padding: 1rem;
        border-radius: 12px;
        cursor: pointer;
        transition: all 0.5s cubic-bezier(0.25, 0.46, 0.45, 0.94);
      }
      .blog-post-item:not(:last-child) {
        margin-bottom: 0.5rem;
      }
      .blog-post-item h4 {
        color: var(--text-color);
        margin-bottom: 0.5rem;
        font-size: 1.1rem;
      }
      .blog-post-item p {
        color: var(--text-color-darker);
        font-size: 0.9rem;
      }
      .blog-post-item.active {
        background-color: var(--repo-card-bg);
      }
      .blog-post-item:hover:not(.active) {
        background-color: var(--repo-card-hover-bg);
        transform: translateX(5px) scale(1.02);
      }
      .blog-main {
        flex-grow: 1;
        padding-left: 2rem;
        height: 80vh;
        overflow-y: auto;
      }
      .blog-main::-webkit-scrollbar {
        width: 8px;
      }
      .blog-main::-webkit-scrollbar-thumb {
        background-color: var(--accent-color);
        border-radius: 8px;
      }
      .blog-post-content h2 {
        font-size: 2rem;
        color: var(--text-color-white);
        margin-bottom: 0.5rem;
        border-bottom: 1px solid var(--glass-border-color);
        padding-bottom: 1rem;
      }
      .blog-post-meta {
        color: var(--text-color-darker);
        margin-bottom: 2rem;
      }
      .blog-post-body {
        line-height: 1.8;
        font-size: 1.05rem;
        overflow-wrap: break-word;
      }
      .blog-post-body > *:first-child {
        margin-top: 0;
      }
      .blog-post-body p {
        margin-bottom: 1em;
      }
      .blog-post-body h3 {
        font-size: 1.5em;
        margin: 1.5em 0 1em;
        color: var(--text-color-white);
      }
      .blog-post-body h4 {
        font-size: 1.2em;
        margin: 1.2em 0 1em;
        color: var(--text-color-white);
      }
      .blog-post-body a {
        color: var(--accent-color);
      }
      .blog-post-body ul,
      .blog-post-body ol {
        padding-left: 1.5em;
        margin-bottom: 1em;
      }
      .blog-post-body blockquote {
        border-left: 4px solid var(--accent-color);
        padding-left: 1em;
        margin: 1.5em 0;
        color: var(--text-color-darker);
      }
      .blog-post-body pre {
        background-color: rgba(0, 0, 0, 0.3);
        padding: 1rem;
        border-radius: 8px;
        overflow-x: auto;
        border: 1px solid var(--glass-border-color);
        margin: 1.5em 0;
      }
      .blog-post-body code {
        font-family: "Courier New", Courier, monospace;
      }
      /* --- 新增：修复博客文章图片溢出问题 --- */
      .blog-post-body img {
        max-width: 100%;
        height: auto;
        border-radius: 12px;
        margin: 1.5em 0;
        display: block;
      }
      /* --- 修复结束 --- */
      .timeline {
        position: relative;
        padding-left: 2rem;
        --line-color: var(--accent-color);
      }
      .timeline::before {
        content: "";
        position: absolute;
        left: 0;
        top: 0;
        width: 2px;
        height: 100%;
        background-color: var(--repo-card-bg);
      }
      .timeline::after {
        content: "";
        position: absolute;
        left: 0;
        top: 0;
        width: 2px;
        height: 100%;
        background-color: var(--line-color);
        transform: scaleY(0);
        transform-origin: top;
        transition: transform 1s ease-out;
      }
      .timeline.is-visible::after {
        transform: scaleY(1);
      }
      .timeline-item {
        position: relative;
        margin-bottom: 2rem;
        opacity: 0;
        transform: translateX(20px);
        transition: opacity 0.6s ease-out, transform 0.6s ease-out;
      }
      .timeline-item.is-visible {
        opacity: 1;
        transform: translateX(0);
      }
      .timeline-item:last-child {
        margin-bottom: 0;
      }
      .timeline-item::before {
        content: "";
        position: absolute;
        left: -2.5rem;
        top: 4px;
        width: 14px;
        height: 14px;
        background-color: var(--body-bg-color);
        border-radius: 50%;
        border: 3px solid var(--line-color);
        z-index: 1;
        transform: scale(0);
        transition: transform 0.4s ease-out 0.5s;
      }
      .timeline-item.is-visible::before {
        transform: scale(1);
      }
      .timeline-date {
        font-weight: 600;
        color: var(--text-color-white);
      }
      .timeline-desc {
        margin-top: 0.5rem;
        color: var(--text-color-darker);
      }
      .target-list {
        display: flex;
        flex-direction: column;
        gap: 1.5rem;
      }
      .target-item {
        display: flex;
        flex-direction: column;
        gap: 0.75rem;
      }
      .target-info {
        display: flex;
        justify-content: space-between;
        align-items: center;
        font-size: 0.95rem;
      }
      .target-name {
        color: var(--text-color);
        font-weight: 500;
      }
      .target-progress-text {
        color: var(--text-color-darker);
        font-size: 0.9rem;
      }
      .progress-bar-container {
        width: 100%;
        height: 8px;
        background-color: var(--repo-card-bg);
        border-radius: 4px;
        overflow: hidden;
      }
      .progress-bar {
        height: 100%;
        background: linear-gradient(90deg, var(--accent-color), #3b82f6);
        border-radius: 4px;
        width: 0;
        transition: width 1s cubic-bezier(0.25, 1, 0.5, 1) 0.3s;
      }
      .interest-pills-container {
        display: flex;
        gap: 1rem;
        overflow-x: auto;
        padding: 0.5rem 1rem 1.5rem 1rem;
        margin-bottom: 2rem;
        -webkit-overflow-scrolling: touch;
        scrollbar-width: none;
        -ms-overflow-style: none;
      }
      .interest-pills-container::-webkit-scrollbar {
        display: none;
      }
      .interest-pill {
        display: flex;
        align-items: center;
        gap: 0.75rem;
        background-color: var(--repo-card-bg);
        border: 1px solid var(--glass-border-color);
        color: var(--text-color-darker);
        padding: 0.75rem 1.5rem;
        border-radius: 999px;
        cursor: pointer;
        font-size: 1rem;
        font-weight: 500;
        white-space: nowrap;
        transition: all 0.3s ease;
        flex-shrink: 0;
      }
      .interest-pill:hover {
        background-color: var(--repo-card-hover-bg);
        color: var(--text-color-white);
        transform: translateY(-2px);
      }
      .interest-pill.is-active {
        background-color: var(--accent-color);
        color: #121212;
        border-color: var(--accent-color);
        box-shadow: 0 0 15px var(--glow-color);
      }
      .interest-pill i {
        font-size: 1.25rem;
      }
      .interest-details-container {
        min-height: 400px;
        background-color: var(--repo-card-bg);
        border-radius: 16px;
        padding: 2rem;
      }
      .interest-details-content .video-container {
        position: relative;
        padding-bottom: 56.25%;
        height: 0;
        overflow: hidden;
        max-width: 100%;
        background: #000;
        border-radius: 12px;
        margin-bottom: 2rem;
      }
      .interest-details-content .video-container iframe {
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        border: 0;
      }
      .interest-markdown-content {
        line-height: 1.8;
        overflow-wrap: break-word; /* 增加此行来处理长文本换行 */
      }
      .interest-markdown-content > *:first-child {
        margin-top: 0;
      }
      .interest-markdown-content p {
        margin-bottom: 1em;
      }
      .interest-markdown-content h3 {
        font-size: 1.5em;
        margin: 1.5em 0 1em;
        color: var(--text-color-white);
      }
      .interest-markdown-content h4 {
        font-size: 1.2em;
        margin: 1.2em 0 1em;
        color: var(--text-color-white);
      }
      .interest-markdown-content a {
        color: var(--accent-color);
      }
      .interest-markdown-content ul,
      .interest-markdown-content ol {
        padding-left: 1.5em;
        margin-bottom: 1em;
      }
      .interest-markdown-content blockquote {
        border-left: 4px solid var(--accent-color);
        padding-left: 1em;
        margin: 1.5em 0;
        color: var(--text-color-darker);
      }
      .interest-markdown-content pre {
        background-color: rgba(0, 0, 0, 0.3);
        padding: 1rem;
        border-radius: 8px;
        overflow-x: auto;
        border: 1px solid var(--glass-border-color);
        margin: 1.5em 0;
      }
      .interest-markdown-content code {
        font-family: "Courier New", Courier, monospace;
      }
      /* --- 新增：修复图片溢出问题 --- */
      .interest-markdown-content img {
        max-width: 100%;
        height: auto;
        border-radius: 12px;
        margin: 1.5em 0;
        display: block; /* 确保图片为块级元素以便边距生效 */
      }
      /* --- 修复结束 --- */
      .fab-form-title {
        text-align: center;
        color: var(--text-color-white);
        font-size: 1.1rem;
        font-weight: 600;
        margin-bottom: 0.5rem;
      }
      /* Guestbook / FAB removed */
      .footer-section {
        padding: 4rem 2rem 2rem;
        text-align: center;
        color: var(--text-color-darker);
        border-radius: 24px 24px 0 0;
      }
      html.light-theme .footer-section {
        --glass-bg: rgba(247, 248, 250, 0.7);
      }
      .footer-title {
        font-size: 1.5rem;
        margin-bottom: 1rem;
        color: var(--text-color-white);
      }
      .footer-subtitle {
        margin-bottom: 2.5rem;
      }
      .icon-links-bar {
        display: flex;
        justify-content: center;
        flex-wrap: wrap;
        gap: 1rem 1.5rem;
        margin-bottom: 2.5rem;
      }
      .icon-link {
        display: flex;
        align-items: center;
        gap: 0.5rem;
        color: var(--text-color-darker);
        text-decoration: none;
        transition: color 0.3s ease;
      }
      .icon-link:hover {
        color: var(--text-color-white);
      }
      .icon-link svg {
        width: 18px;
        height: 18px;
      }
      .icon-link span {
        font-size: 0.9rem;
      }
      .info-links {
        display: flex;
        justify-content: center;
        flex-wrap: wrap;
        gap: 0.5rem 1.5rem;
        margin-bottom: 1.5rem;
      }
      .info-links a {
        color: var(--text-color-darker);
        text-decoration: none;
        font-size: 0.85rem;
      }
      .info-links a:hover {
        color: var(--text-color-white);
      }
      .copyright-info {
        border-top: 1px solid var(--glass-border-color);
        padding-top: 1.5rem;
        font-size: 0.85rem;
        position: relative;
        transition: border-color 0.3s ease;
      }
      .copyright-info p {
        margin-bottom: 0.5rem;
      }
      .copyright-info .site-info-item {
        display: inline-block;
        margin: 0 0.5rem;
      }
      .theme-switcher {
        position: absolute;
        right: 0;
        top: 50%;
        transform: translateY(-50%);
        display: flex;
        gap: 0.5rem;
        background: var(--theme-switcher-bg);
        padding: 0.3rem;
        border-radius: 20px;
        transition: background-color 0.3s ease;
      }
      .theme-switcher button {
        background: none;
        border: none;
        color: var(--text-color-darker);
        cursor: pointer;
        padding: 0.3rem;
        border-radius: 50%;
        display: flex;
        align-items: center;
        justify-content: center;
      }
      .theme-switcher button.active {
        background: var(--subscribe-btn-bg);
        color: white;
      }
      .theme-switcher svg {
        width: 14px;
        height: 14px;
      }

      /* 组件: 创造与知识面板 (Github & 书架) - '成长与动态' Tab 优化布局 */
      .growth-grid {
        display: grid;
        grid-template-columns: 1fr;
        gap: 1.5rem;
      }
      @media (min-width: 900px) {
        .growth-grid {
          grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
          align-items: stretch;
        }
      }
      .growth-right-column {
        display: flex;
        flex-direction: column;
        gap: 1.5rem;
      }
      .growth-card {
        background: var(--repo-card-bg);
        padding: 1.5rem;
        border-radius: 16px;
        display: flex;
        flex-direction: column;
      }
      .growth-card h3 {
        font-size: 1.25rem;
        font-weight: 600;
        color: var(--text-color-white);
        margin: 0 0 1.5rem 0;
        padding-bottom: 1rem;
        border-bottom: 1px solid var(--glass-border-color);
        display: flex;
        align-items: center;
        gap: 0.75rem;
        flex-shrink: 0;
      }
      .growth-right-column .growth-card:last-child {
        flex-grow: 1;
      }
      .growth-card .activity-feed {
        flex-grow: 1;
        min-height: 200px;
        max-height: 350px;
      }

      /* --- 新增: 图片灯箱/模态框样式 --- */
      .image-modal-overlay {
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background-color: rgba(0, 0, 0, 0.85);
        display: flex;
        justify-content: center;
        align-items: center;
        z-index: 1000;
        backdrop-filter: blur(8px);
        -webkit-backdrop-filter: blur(8px);
        cursor: zoom-out;
      }
      .image-modal-content {
        max-width: 90vw;
        max-height: 90vh;
        display: flex;
        justify-content: center;
        align-items: center;
      }
      .image-modal-content img {
        max-width: 100%;
        max-height: 100%;
        object-fit: contain;
        border-radius: 12px;
        box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5);
        cursor: default;
      }
      .close-image-modal-btn {
        position: absolute;
        top: 20px;
        right: 30px;
        font-size: 2.5rem;
        font-weight: 300;
        color: white;
        background: none;
        border: none;
        cursor: pointer;
        line-height: 1;
        text-shadow: 0 0 5px rgba(0, 0, 0, 0.5);
        transition: transform 0.2s ease;
      }
      .close-image-modal-btn:hover {
        transform: scale(1.2);
      }
      .blog-post-body img,
      .interest-markdown-content img {
        cursor: zoom-in;
      }
      .modal-fade-enter-active,
      .modal-fade-leave-active {
        transition: opacity 0.3s ease;
      }
      .modal-fade-enter-from,
      .modal-fade-leave-to {
        opacity: 0;
      }

      /* --- 6. 动画效果 --- */
      @keyframes wave {
        0% {
          transform: rotate(0deg);
        }
        10% {
          transform: rotate(14deg);
        }
        20% {
          transform: rotate(-8deg);
        }
        30% {
          transform: rotate(14deg);
        }
        40% {
          transform: rotate(-4deg);
        }
        50% {
          transform: rotate(10deg);
        }
        60% {
          transform: rotate(0deg);
        }
        100% {
          transform: rotate(0deg);
        }
      }
      @keyframes spin {
        to {
          transform: rotate(360deg);
        }
      }
      @keyframes blink {
        0%,
        100% {
          opacity: 1;
        }
        50% {
          opacity: 0;
        }
      }
      /* Danmaku keyframes removed */
      @keyframes pulse-core {
        0%,
        100% {
          transform: translate(-50%, -50%) scale(1);
          box-shadow: 0 0 15px var(--accent-color), 0 0 30px var(--accent-color);
        }
        50% {
          transform: translate(-50%, -50%) scale(1.2);
          box-shadow: 0 0 25px var(--accent-color), 0 0 50px var(--accent-color);
        }
      }
      @keyframes orbit {
        from {
          transform: rotate(0deg) translateX(45px) rotate(0deg);
        }
        to {
          transform: rotate(360deg) translateX(45px) rotate(-360deg);
        }
      }
      @keyframes orbit-reverse {
        from {
          transform: rotate(0deg) translateX(35px) rotate(0deg) scale(0.8);
        }
        to {
          transform: rotate(-360deg) translateX(35px) rotate(360deg) scale(0.8);
        }
      }
      @keyframes orbit-vertical {
        0% {
          transform: rotate(90deg) translateX(55px) rotate(-90deg) scale(1.1);
        }
        100% {
          transform: rotate(450deg) translateX(55px) rotate(-450deg) scale(1.1);
        }
      }
      @keyframes pulse-bg {
        0%,
        100% {
          opacity: 1;
        }
        50% {
          opacity: 0.5;
        }
      }
      .player-fade-enter-active,
      .player-fade-leave-active {
        transition: all 0.4s ease-in-out;
      }
      .player-fade-enter-from,
      .player-fade-leave-to {
        opacity: 0;
        transform: scale(0.95);
      }
      .panel-fade-enter-active,
      .panel-fade-leave-active {
        transition: opacity 0.4s ease-in-out;
      }
      .panel-fade-enter-from,
      .panel-fade-leave-to {
        opacity: 0;
      }
      .panel-fade-enter-active {
        transition-delay: 0.2s;
      }
      .post-fade-enter-active,
      .post-fade-leave-active {
        transition: opacity 0.4s ease, transform 0.4s ease;
      }
      .post-fade-enter-from,
      .post-fade-leave-to {
        opacity: 0;
        transform: translateY(15px);
      }
      .list-fade-enter-active,
      .list-fade-leave-active,
      .list-fade-move {
        transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
      }
      .list-fade-enter-from,
      .list-fade-leave-to {
        opacity: 0;
        transform: translateX(20px);
      }
      .list-fade-leave-active {
        position: absolute;
        width: calc(100% - 2rem);
      }
      @keyframes slide-up-fade-in {
        from {
          opacity: 0;
          transform: translateY(20px);
        }
        to {
          opacity: 1;
          transform: translateY(0);
        }
      }
      .panel-fade-enter-active .blog-sidebar {
        animation: slide-up-fade-in 0.6s 0.3s backwards;
      }
      .panel-fade-enter-active .blog-main {
        animation: slide-up-fade-in 0.6s 0.4s backwards;
      }
      .dropdown-fade-enter-active,
      .dropdown-fade-leave-active {
        transition: all 0.2s ease;
      }
      .dropdown-fade-enter-from,
      .dropdown-fade-leave-to {
        opacity: 0;
        transform: translateY(10px);
      }
      .content-fade-enter-active,
      .content-fade-leave-active {
        transition: opacity 0.4s ease, transform 0.4s ease;
      }
      .content-fade-enter-from,
      .content-fade-leave-to {
        opacity: 0;
        transform: translateY(15px);
      }
      .anim-fade-in-up {
        opacity: 0;
        transform: translateY(30px);
        transition: opacity 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94),
          transform 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94);
      }
      .anim-fade-in-up.is-visible {
        opacity: 1;
        transform: translateY(0);
      }

      /* --- 7. 响应式设计 --- */
      @media (max-width: 900px) {
        .hub-intro h2 {
          font-size: 2rem;
        }
        .hub-intro blockquote {
          font-size: 1.2rem;
        }
        .book-grid {
          grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
        }
        .blog-panel-content {
          flex-direction: column;
        }
        .blog-sidebar {
          width: 100%;
          border-right: none;
          border-bottom: 1px solid var(--glass-border-color);
          padding-right: 0;
          padding-bottom: 1rem;
          margin-bottom: 1.5rem;
          height: auto;
          max-height: 50vh;
        }
        .blog-main {
          padding-left: 0;
          height: 50vh;
        }
        .book-modal-content {
          flex-direction: column;
          align-items: center;
          text-align: center;
        }
        .book-modal-details {
          text-align: center;
        }
        .book-modal-details .review {
          text-align: left;
        }
      }
      @media (max-width: 768px) {
        .custom-player-controls .volume-control-wrapper {
          display: none;
        }
        .resume-header h1 {
          font-size: 2rem;
        }
        .resume-contact {
          gap: 0.5rem 1rem;
          flex-direction: column;
          align-items: flex-start;
          margin: 0 auto;
          max-width: 250px;
        }
        .custom-player {
          flex-direction: column;
          gap: 1.5rem;
        }
        .custom-player-info-wrapper {
          width: 100%;
        }
        .custom-player-controls {
          flex-wrap: wrap;
          justify-content: center;
        }
      }
      @media (max-width: 600px) {
        .main-header {
          padding: 4px;
        }
        .header-nav a {
          margin: 0;
          padding: 0 0.75rem;
        }
        .modal-card-container {
          padding: 1rem;
        }
        .modal-card {
          padding: 2rem 1.5rem;
          border-radius: 1rem;
        }
        .modal-card:not(.book-modal-card) {
          width: 100%;
        }
        .book-modal-card {
          width: 90vw;
        }
        .copyright-info {
          text-align: left;
          padding-right: 60px;
        }
        .theme-switcher {
          top: 1.5rem;
          transform: none;
        }
        .hero-player-container {
          padding: 0;
          width: calc(100% - 40px);
          max-width: calc(100% - 40px);
        }
        .hub-grid {
          grid-template-columns: 1fr;
        }
        .book-grid {
          grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
          gap: 1rem;
        }
        .fab-container {
          bottom: 20px;
          left: 20px;
          width: 50px;
          height: 50px;
          border-radius: 25px;
        }
        .fab-toggle {
          width: 50px;
          height: 50px;
          font-size: 1.5rem;
        }
        .fab-container.expanded {
          width: min(350px, 90vw);
          height: 320px;
        }
        .play-button {
          width: 50px;
          height: 50px;
        }
        .play-button i {
          width: 24px;
          height: 24px;
          font-size: 24px;
        }
      }
    
/* --- Extracted from HTML --- */

/* Removed duplicate :root from contact.html */

/* Removed duplicate light-theme from contact.html */

        /* --- 2. 全局样式重置和基础设定 --- */
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        html,
        body {
            scrollbar-width: none;
            -ms-overflow-style: none;
        }

        html::-webkit-scrollbar,
        body::-webkit-scrollbar {
            display: none;
        }

        body {
            background-color: var(--body-bg-color);
            font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
            color: var(--text-color);
            overflow-x: hidden;
            display: flex;
            justify-content: center;
            align-items: center;
            min-height: 100vh;
            padding: 2rem;
            transition: background-color 0.4s ease, color 0.4s ease;
        }

        /* --- 3. 核心样式 --- */
        #particle-canvas {
            position: fixed;
            top: 0;
            left: 0;
            width: 100vw;
            height: 100vh;
            z-index: -1;
        }

        .glass-effect {
            background: var(--glass-bg-optimized);
            border: 1px solid var(--glass-border-color);
            border-radius: 24px;
            box-shadow: 0 8px 32px 0 var(--shadow-color), 0 0 15px var(--glow-color);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            transition: background 0.4s ease, border-color 0.4s ease, box-shadow 0.4s ease;
        }

        .contact-container {
            width: 100%;
            max-width: 600px;
            padding: 3rem;
            position: relative;
        }

        .contact-container h1 {
            font-family: 'ZCOOL KuaiLe', cursive;
            font-size: 2.5rem;
            text-align: center;
            margin-bottom: 2.5rem;
            color: var(--text-color-white);
            padding-top: 2rem;
        }

        /* 主题切换按钮 */
        .theme-toggle {
            position: absolute;
            top: 2rem;
            left: 2rem;
            background: none;
            border: none;
            color: var(--text-color-darker);
            cursor: pointer;
            font-size: 1.5rem;
            padding: 0.5rem;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: color 0.3s ease, background-color 0.3s ease;
        }

        .theme-toggle:hover {
            background-color: var(--input-bg);
        }

        .theme-toggle .ph-sun {
            display: none;
        }

        .theme-toggle .ph-moon {
            display: block;
        }

        html.light-theme .theme-toggle .ph-sun {
            display: block;
        }

        html.light-theme .theme-toggle .ph-moon {
            display: none;
        }


        .form-group {
            margin-bottom: 1.5rem;
            position: relative;
        }

        .form-group label {
            display: block;
            margin-bottom: 0.5rem;
            font-size: 0.9rem;
            color: var(--text-color-darker);
        }

        .form-group input,
        .form-group textarea {
            width: 100%;
            padding: 0.8rem 1rem;
            border-radius: 12px;
            border: 1px solid var(--glass-border-color);
            color: var(--text-color);
            font-size: 1rem;
            transition: all 0.3s ease;
            background: var(--input-bg);
            font-family: inherit;
        }

        .form-group textarea {
            resize: vertical;
            min-height: 120px;
        }

        .form-group input:focus,
        .form-group textarea:focus {
            outline: none;
            border-color: var(--accent-color);
            box-shadow: 0 0 0 3px rgba(var(--accent-color-rgb), 0.3);
        }

        .contact-input-group {
            display: flex;
            border-radius: 12px;
            background: var(--input-bg);
            border: 1px solid var(--glass-border-color);
            transition: all 0.3s ease;
        }

        .contact-input-group:focus-within {
            border-color: var(--accent-color);
            box-shadow: 0 0 0 3px rgba(var(--accent-color-rgb), 0.3);
        }

        .contact-input-group input {
            border: none;
            background: transparent;
            flex-grow: 1;
            padding: 0.8rem 1rem;
            border-radius: 0 12px 12px 0;
        }

        .contact-input-group input:focus {
            box-shadow: none;
        }

        .form-group.error-state .contact-input-group,
        .form-group.error-state input,
        .form-group.error-state textarea {
            border-color: var(--error-color);
        }

        .form-group.error-state input:focus,
        .form-group.error-state textarea:focus {
            box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.3);
        }

        .error-message {
            color: var(--error-color);
            font-size: 0.8rem;
            padding-top: 0.3rem;
            display: none;
        }

        .form-group.error-state .error-message {
            display: block;
        }

        .textarea-footer {
            display: flex;
            justify-content: flex-end;
            align-items: center;
            gap: 1rem;
        }

        .char-counter {
            font-size: 0.8rem;
            color: var(--text-color-darker);
        }


        /* --- 4. 自定义下拉菜单样式 --- */
        .custom-select-wrapper {
            position: relative;
            user-select: none;
            width: 125px;
            border-right: 1px solid var(--glass-border-color);
        }

        .custom-select-trigger {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 0.8rem 1rem;
            cursor: pointer;
            height: 100%;
        }

        .custom-select-trigger span {
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        .custom-select-trigger i {
            font-size: 1.2rem;
            color: var(--text-color-darker);
            transition: transform 0.3s ease;
        }

        .custom-select.open .custom-select-trigger i {
            transform: rotate(180deg);
        }

        .custom-options {
            position: absolute;
            top: calc(100% + 8px);
            left: 0;
            min-width: 100%;
            background: var(--glass-bg-optimized);
            border: 1px solid var(--glass-border-color);
            border-radius: 12px;
            padding: 0.5rem;
            z-index: 10;
            opacity: 0;
            visibility: hidden;
            transform: translateY(-10px);
            transition: opacity 0.3s ease, transform 0.3s ease, visibility 0.3s;
            box-shadow: 0 8px 24px var(--shadow-color);
            display: flex;
            flex-direction: column;
            gap: 0.4rem;
        }

        .custom-select.open .custom-options {
            opacity: 1;
            visibility: visible;
            transform: translateY(0);
        }

        .custom-option {
            padding: 0.7rem 1rem;
            cursor: pointer;
            border-radius: 8px;
            transform: translateY(5px);
            opacity: 0;
            transition: background-color 0.2s ease, color 0.2s ease, transform 0.3s ease, opacity 0.3s ease;
            white-space: nowrap;
        }

        .custom-select.open .custom-option {
            transform: translateY(0);
            opacity: 1;
        }

        .custom-select.open .custom-option:nth-child(2) {
            transition-delay: 0.05s;
        }

        .custom-select.open .custom-option:nth-child(3) {
            transition-delay: 0.1s;
        }

        .custom-select.open .custom-option:nth-child(4) {
            transition-delay: 0.15s;
        }

        .custom-option:hover {
            background-color: rgba(var(--accent-color-rgb), 0.15);
        }

        .custom-option.selected {
            background-color: rgba(var(--accent-color-rgb), 0.3);
            font-weight: 500;
        }

        /* --- 5. 表单提交和其他元素 --- */
        .form-submit-button {
            width: 100%;
            padding: 0.9rem 1rem;
            border: none;
            background-color: var(--submit-btn-bg);
            color: white;
            font-size: 1rem;
            font-weight: 500;
            border-radius: 12px;
            cursor: pointer;
            transition: all 0.3s ease;
            position: relative;
            display: flex;
            justify-content: center;
            align-items: center;
        }

        .form-submit-button:hover {
            opacity: 0.9;
            transform: translateY(-2px);
        }

        .form-submit-button:disabled {
            opacity: 0.6;
            cursor: not-allowed;
        }

        .loader {
            width: 18px;
            height: 18px;
            border: 2px solid #FFF;
            border-bottom-color: transparent;
            border-radius: 50%;
            display: none;
            box-sizing: border-box;
            animation: rotation 1s linear infinite;
        }

        .form-submit-button.loading .loader {
            display: inline-block;
        }

        .form-submit-button.loading .button-text {
            visibility: hidden;
        }

        @keyframes rotation {
            0% {
                transform: rotate(0deg);
            }

            100% {
                transform: rotate(360deg);
            }
        }

        @keyframes shake {

            10%,
            90% {
                transform: translate3d(-1px, 0, 0);
            }

            20%,
            80% {
                transform: translate3d(2px, 0, 0);
            }

            30%,
            50%,
            70% {
                transform: translate3d(-4px, 0, 0);
            }

            40%,
            60% {
                transform: translate3d(4px, 0, 0);
            }
        }

        .shake {
            animation: shake 0.82s cubic-bezier(.36, .07, .19, .97) both;
        }

        #form-status {
            text-align: center;
            margin-top: 1rem;
            font-weight: 500;
            min-height: 1.2em;
        }

        #form-status.success {
            color: var(--success-color);
        }

        #form-status.error {
            color: var(--error-color);
        }

        .other-contacts {
            display: flex;
            justify-content: center;
            gap: 1.5rem;
            flex-wrap: wrap;
            margin-top: 1.5rem;
            /* 调整间距 */
        }

        .contact-link {
            color: var(--text-color-darker);
            text-decoration: none;
            font-size: 0.9rem;
            transition: color 0.3s ease;
        }

        .contact-link:hover {
            color: var(--accent-color);
            text-decoration: underline;
        }

        /* 返回主页链接（已移至右上角） */
        .back-link {
            position: absolute;
            top: 2rem;
            right: 2rem;
            color: var(--text-color-darker);
            text-decoration: none;
            font-size: 1.5rem;
            padding: 0.5rem;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: color 0.3s ease, background-color 0.3s ease;
        }

        .back-link:hover {
            background-color: var(--input-bg);
            color: var(--text-color);
        }

        .site-footer {
            margin-top: 2.5rem;
            padding-top: 1.5rem;
            border-top: 1px solid var(--glass-border-color);
            text-align: center;
            font-size: 0.8rem;
            color: var(--text-color-darker);
        }

        .site-footer p {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            align-items: center;
            gap: 0.25rem 0.75rem;
            /* 行间距 列间距 */
            line-height: 1.5;
        }

        .site-footer a {
            color: inherit;
            text-decoration: none;
            transition: color 0.3s ease;
        }

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


        /* 响应式设计 */
        @media (max-width: 600px) {
            body {
                padding: 1rem;
            }

            .contact-container {
                padding: 2rem 1.5rem;
            }

            .contact-container h1 {
                font-size: 2rem;
            }

            .theme-toggle {
                top: 1rem;
                left: 1rem;
            }

            .back-link {
                top: 1rem;
                right: 1rem;
            }
        }

/* --- Mobile Card Width Fixes --- */
@media (max-width: 768px) {
  .about-us-card {
    flex-direction: column !important;
    padding: 1rem !important; /* Reduced from 1.5rem */
    gap: 1rem !important;
  }
  .about-sidebar {
    flex-direction: row !important;
    width: 100% !important;
    height: auto !important;
    border-bottom: 1px solid var(--accent-color);
    padding-bottom: 1rem;
    align-items: center;
    justify-content: center;
  }
  .sidebar-line {
    display: none;
  }
  .sidebar-text {
    writing-mode: horizontal-tb !important;
    transform: none !important;
    margin: 0 !important;
    text-align: center;
    font-size: 1.25rem !important;
    font-weight: 700;
  }
  
  /* Ensure all cards use constrained padding on mobile */
  .mui-card, .content-card, .repo-card, .book-card, .glass-effect {
    padding: 1rem !important; /* Reduced from 1.25rem */
  }
  
  /* Fix Hero padding */
  .initial-hero-section {
    padding-left: 1rem !important;
    padding-right: 1rem !important;
  }
  .hero-text-container {
    font-size: clamp(2rem, 10vw, 3.5rem) !important;
  }
}