/* LuoMuQAQ portal — High-Performance Physics-based Liquid Glass UI */

/* 维护契约(修改断点/材质前必读):
   1. 移动布局断点 = (max-width: 640px) 或 (竖屏且 max-width: 768px),
      与 app.js 的 isPortraitMode() 使用同一表达式,修改需两处同步。
   2. 所有悬停动效都包裹在防护媒体查询中,条件为上述断点的补集:
      (min-width: 769px) 或 (横屏且 min-width: 641px)——移动布局下不存在悬停。
      调整断点时需同步本文件全部防护头与 app.js 的 isPortraitMode()。
   3. 材质命名:本项目为液态玻璃(liquid-glass / rdev-glass);
      笔记项目为亚克力(acrylic),两项目命名不可混用。 */

:root {
  color-scheme: dark;
  --font-sans: "MiSans", "MiSans Latin", -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --radius-sm: 12px;
  --radius-lg: 24px;
  --radius-xl: 32px;
  --radius-pill: 999px;
  --radius-search: 26px;
  
  /* 缓动系统 */
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
  --ease-touch: cubic-bezier(0.2, 0, 0, 1);
  --ease-smooth: cubic-bezier(0.16, 1, 0.3, 1);
  
  /* 高可读性文字颜色（深色模式：柔和舒适，降低高光刺眼感） */
  --text-primary: rgba(235, 242, 255, 0.88);
  --text-secondary: rgba(185, 205, 235, 0.76);
  --text-tertiary: rgba(150, 175, 210, 0.65);
  
  --accent: #6ec8f2;
  --accent-strong: #8178f0;
  --accent-soft: rgba(110, 200, 242, 0.20);
  
  /* 统一液态玻璃材质：极高通透折光、通透晶莹与灵动景深 */
  --glass-fill-top: rgba(255, 255, 255, 0.032);
  --glass-fill-mid: rgba(118, 148, 205, 0.008);
  --glass-fill-bottom: rgba(7, 13, 28, 0.045);
  --glass-surface: linear-gradient(135deg, var(--glass-fill-top) 0%, var(--glass-fill-mid) 48%, var(--glass-fill-bottom) 100%);
  --glass-surface-soft: linear-gradient(135deg, var(--glass-fill-top), var(--glass-fill-bottom));

  --glass-glint: rgba(255, 255, 255, 0.16);
  --glass-line: rgba(255, 255, 255, 0.18);
  --glass-line-hover: rgba(255, 255, 255, 0.28);
  --glass-line-shadow: rgba(0, 0, 0, 0.2);
  --glass-shadow: 0 14px 34px rgba(4, 8, 22, 0.18), 0 2px 8px rgba(4, 8, 22, 0.08), inset 0 1px 0 rgba(255, 255, 255, 0.16), inset 0 -1px 0 rgba(0, 0, 0, 0.12);
  --glass-shadow-hover: 0 20px 46px rgba(4, 8, 22, 0.24), 0 6px 16px rgba(42, 99, 190, 0.10), inset 0 1px 0 rgba(255, 255, 255, 0.22), inset 0 -1px 0 rgba(0, 0, 0, 0.14);
  --glass-filter: blur(12px) saturate(125%) brightness(102%);
  --dropdown-filter: blur(18px) saturate(114%) brightness(95%);
  --bg-base: #12192b;
  
  /* 全屏暗色均一覆盖层 */
  --overlay: linear-gradient(180deg, rgba(4, 8, 20, 0.52) 0%, rgba(4, 8, 20, 0.52) 100%);
}

[data-theme="light"] {
  color-scheme: light;
  --text-primary: #0f192d;
  --text-secondary: rgba(20, 32, 58, 0.92);
  --text-tertiary: rgba(35, 52, 85, 0.82);
  --bg-base: #ebf1fa;
  
  --accent: #087cb7;
  --accent-strong: #5147c9;
  --accent-soft: rgba(8, 124, 183, 0.18);
  
  /* 浅色模式高通透水晶玻璃材质 */
  --glass-fill-top: rgba(255, 255, 255, 0.10);
  --glass-fill-mid: rgba(242, 247, 255, 0.025);
  --glass-fill-bottom: rgba(207, 222, 246, 0.015);
  --glass-glint: rgba(255, 255, 255, 0.30);
  --glass-line: rgba(255, 255, 255, 0.55);
  --glass-line-hover: rgba(255, 255, 255, 0.72);
  --glass-line-shadow: rgba(59, 83, 132, 0.1);
  --glass-shadow: 0 14px 34px rgba(41, 58, 96, 0.07), 0 2px 8px rgba(49, 67, 109, 0.03), inset 0 1px 0 rgba(255, 255, 255, 0.55), inset 0 -1px 0 rgba(70, 100, 160, 0.08);
  --glass-shadow-hover: 0 20px 46px rgba(37, 58, 111, 0.11), 0 6px 16px rgba(77, 127, 255, 0.08), inset 0 1px 0 rgba(255, 255, 255, 0.65), inset 0 -1px 0 rgba(70, 100, 160, 0.1);
  --glass-filter: blur(12px) saturate(120%) brightness(104%);
  --dropdown-filter: blur(18px) saturate(110%) brightness(102%);
  --overlay: linear-gradient(180deg, rgba(235, 241, 255, 0.18) 0%, rgba(235, 241, 255, 0.18) 100%);
}

.skip-link {
  position: absolute;
  top: -100px;
  left: 20px;
  z-index: 10000;
  padding: 10px 18px;
  background: var(--bg-base);
  color: var(--text-primary);
  border: 1px solid var(--accent);
  border-radius: var(--radius-sm);
  font-weight: 600;
  text-decoration: none;
  transition: top 0.2s ease;
}

.skip-link:focus-visible {
  top: 20px;
  outline: none;
}

*, *::before, *::after {
  box-sizing: border-box;
  -webkit-tap-highlight-color: transparent;
}

html { min-width: 320px; font-size: 16px; scroll-behavior: smooth; }

body {
  min-width: 320px;
  min-height: 100vh;
  margin: 0;
  overflow-x: hidden;
  color: var(--text-primary);
  font-family: var(--font-sans);
  line-height: 1.5;
  background: var(--bg-base);
  -webkit-tap-highlight-color: transparent;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  transition: background 0.35s ease, color 0.3s ease;
}

button, input, a, img, span, div { -webkit-tap-highlight-color: transparent; }
button, input { font: inherit; }
button { -webkit-tap-highlight-color: transparent; }
button, a { -webkit-tap-highlight-color: transparent; outline: none; }

img {
  -webkit-user-drag: none;
  -webkit-touch-callout: none;
  user-select: none;
}

button:focus:not(:focus-visible),
a:focus:not(:focus-visible),
input:focus:not(:focus-visible) {
  outline: none !important;
  box-shadow: none !important;
}

button:focus-visible,
a:focus-visible,
.btn:focus-visible,
.engine-btn:focus-visible,
.engine-option:focus-visible,
.site-card:focus-visible {
  outline: none !important;
  box-shadow: 0 0 0 2.5px rgba(255, 255, 255, 0.85), 0 0 0 4.5px rgba(4, 8, 22, 0.6) !important;
}

[data-theme="light"] button:focus-visible,
[data-theme="light"] a:focus-visible,
[data-theme="light"] .btn:focus-visible,
[data-theme="light"] .engine-btn:focus-visible,
[data-theme="light"] .engine-option:focus-visible,
[data-theme="light"] .site-card:focus-visible {
  box-shadow: 0 0 0 2.5px rgba(20, 32, 58, 0.8), 0 0 0 4.5px rgba(255, 255, 255, 0.9) !important;
}

input, input:focus, input:focus-visible {
  outline: none !important;
  box-shadow: none !important;
}

/* 锁定壁纸全屏尺寸与 GPU 合成层，杜绝点击与视口扰动时的壁纸拉扯放大 */
.bg-wallpaper, .bg-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100dvh;
  min-height: 100vh;
  inset: 0;
  pointer-events: none;
  transform: translate3d(0, 0, 0);
  -webkit-transform: translate3d(0, 0, 0);
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
}

.bg-wallpaper {
  z-index: -2;
  background: var(--bg-base) url("bg.webp?v=20260821_original") center / cover no-repeat;
  transition: background-image 0.4s ease;
}

[data-theme="dark"] .bg-wallpaper {
  background-image: url("bg-dark.webp");
}

/* 竖屏状态壁纸 (手机/平板竖屏) */
@media (orientation: portrait) {
  .bg-wallpaper {
    background-image: url("bg-portrait.webp?v=20260821_2k");
  }
  [data-theme="dark"] .bg-wallpaper {
    background-image: url("bg-portrait-dark.webp");
    filter: brightness(94%); /* 略微提高壁纸明度，但保持深邃暗色调 */
  }
  /* 竖屏夜间模式遮罩深度 */
  [data-theme="dark"] .bg-overlay {
    background: linear-gradient(180deg, rgba(3, 6, 16, 0.62) 0%, rgba(3, 6, 16, 0.62) 100%);
  }
  /* 竖屏夜间材质保持高透光与通透感 */
  [data-theme="dark"] .liquid-glass {
    --glass-fill-top: rgba(255, 255, 255, 0.025);
    --glass-fill-bottom: rgba(4, 7, 18, 0.045);
    --glass-glint: rgba(255, 255, 255, 0.13);
    --glass-line: rgba(255, 255, 255, 0.15);
    --glass-filter: blur(8px) saturate(106%) brightness(98%);
  }
}

.bg-overlay {
  z-index: -1;
  background: var(--overlay);
  transition: background 0.5s var(--ease-smooth);
}

.app-container {
  width: min(1180px, calc(100% - 40px));
  min-height: 100vh;
  margin: 0 auto;
  padding: 32px 0 54px;
  display: flex;
  flex-direction: column;
  gap: 36px;
}

/* ==========================================================================
   首屏液态玻璃滑入：初始化完成后触发，使用独立 translate 避免覆盖组件 transform。
   ========================================================================== */
.app-preparing .app-container {
  visibility: hidden;
}

/* 隐藏准备阶段直接落到最终 rdev 材质，避免揭示后继续插值阴影和高光。 */
.app-preparing .app-container *,
.app-preparing .app-container *::before,
.app-preparing .app-container *::after {
  transition: none !important;
}

@keyframes glassEnterFromTop {
  from {
    translate: 0 var(--glass-enter-top-distance, -30px);
  }
  to {
    translate: 0 0;
  }
}

@keyframes glassEnterFromBottom {
  from {
    translate: 0 var(--glass-enter-distance, 38px);
  }
  to {
    translate: 0 0;
  }
}

html.app-entering .header-bar {
  animation: glassEnterFromTop 0.48s var(--ease-smooth) backwards;
  will-change: translate;
}

html.app-entering .hero-section {
  --glass-enter-top-distance: -36px;
  animation: glassEnterFromTop 0.48s var(--ease-smooth) backwards;
  will-change: translate;
}

html.app-entering .search-container {
  --glass-enter-distance: 30px;
  animation: glassEnterFromBottom 0.5s var(--ease-smooth) backwards;
  will-change: translate;
}

html.app-entering .site-card {
  --glass-enter-distance: 36px;
  animation: glassEnterFromBottom 0.5s var(--ease-smooth) backwards;
  will-change: translate;
}

@media (max-width: 640px) {
  html.app-entering .header-bar,
  html.app-entering .hero-section,
  html.app-entering .search-container,
  html.app-entering .site-card {
    --glass-enter-distance: 26px;
    --glass-enter-top-distance: -28px;
    animation-duration: 0.55s;
  }
}

/* ==========================================================================
   统一液态玻璃核心基类 (Unified Liquid Glass System)
   ========================================================================== */
.liquid-glass {
  position: relative;
  border: 1px solid var(--glass-line);
  background-clip: padding-box;
  background: var(--glass-surface);
  box-shadow: var(--glass-shadow);
  -webkit-backdrop-filter: var(--glass-filter);
  backdrop-filter: var(--glass-filter);
  overflow: hidden;
}

.liquid-glass::before {
  position: absolute;
  z-index: 0;
  inset: 0;
  content: "";
  pointer-events: none;
  border-radius: inherit;
  background: radial-gradient(120% 82% at 16% -18%, var(--glass-glint) 0%, transparent 62%);
  opacity: 0.58;
}

.liquid-glass::after {
  position: absolute;
  z-index: 0;
  inset: 0;
  content: "";
  pointer-events: none;
  border-radius: inherit;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.14), inset 0 -1px 0 var(--glass-line-shadow);
}

.liquid-glass > * {
  position: relative;
  z-index: 1;
}

/* 1. 顶部标题栏 */
.header-bar {
  z-index: 30;
  min-height: 70px;
  padding: 12px 18px 12px 22px;
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: space-between;
  transition: border-color 0.35s ease, box-shadow 0.35s ease;
}

@media (hover: hover) and (pointer: fine) and (min-width: 769px),
       (hover: hover) and (pointer: fine) and (min-width: 641px) and (orientation: landscape) {
.header-bar:hover {
    border-color: var(--glass-line-hover);
  }
}

.brand-section { min-width: 0; display: flex; align-items: center; gap: 14px; }

.brand-mark {
  width: 50px;
  height: 50px;
  flex: 0 0 auto;
  padding: 6px;
  overflow: visible;
  border: 1px solid var(--glass-line);
  border-radius: 16px;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
  outline: none;
  user-select: none;
  -webkit-user-select: none;
  touch-action: manipulation;
  background: linear-gradient(145deg, rgba(255, 255, 255, 0.16), rgba(135, 169, 226, 0.06));
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.18), 0 5px 14px rgba(8, 19, 48, 0.16);
  transition: transform 0.4s var(--ease-spring), box-shadow 0.35s ease;
}

.brand-mark-image {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: contain;
  pointer-events: none;
  -webkit-user-drag: none;
  user-select: none;
}

@media (hover: hover) and (pointer: fine) and (min-width: 769px),
       (hover: hover) and (pointer: fine) and (min-width: 641px) and (orientation: landscape) {
.brand-mark:hover {
    transform: translateY(-4px) scale(1.14) rotate(6deg);
    box-shadow: 0 12px 28px rgba(66, 129, 255, 0.32);
  }
}

.brand-mark:active {
  transform: scale(0.9) rotate(-3deg);
  transition-duration: 0.1s;
}

.brand-copy { min-width: 0; display: grid; gap: 2px; }
.brand-title { margin: 0; font-size: 1.08rem; font-weight: 700; letter-spacing: -0.015em; line-height: 1.25; }
.brand-subtitle { color: var(--text-secondary); font-size: 0.8rem; font-weight: 600; letter-spacing: 0.01em; }

.header-actions { display: flex; align-items: center; gap: 8px; }

/* 按钮交互 (统一液态玻璃材质体系与灵动弹性动效) */
.btn {
  position: relative;
  overflow: hidden;
  contain: paint;
  background-clip: padding-box;
  touch-action: manipulation;
  -webkit-touch-callout: none;
  user-select: none;
  -webkit-user-select: none;
  min-height: 42px;
  border: 1px solid var(--glass-line);
  border-radius: 14px;
  color: var(--text-primary);
  cursor: pointer;
  background: var(--glass-surface-soft);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.14), inset 0 -1px 0 var(--glass-line-shadow), 0 3px 10px rgba(0, 0, 0, 0.1);
  -webkit-backdrop-filter: var(--glass-filter);
  backdrop-filter: var(--glass-filter);
  transition: transform 0.28s var(--ease-spring), border-color 0.25s ease, box-shadow 0.28s var(--ease-smooth), background 0.25s ease;
  outline: none;
}

[data-theme="light"] .btn {
  border-color: var(--glass-line);
  background: var(--glass-surface-soft);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.5), inset 0 -1px 0 var(--glass-line-shadow), 0 3px 10px rgba(35, 52, 92, 0.06);
}

@media (hover: hover) and (pointer: fine) and (min-width: 769px),
       (hover: hover) and (pointer: fine) and (min-width: 641px) and (orientation: landscape) {
.btn:hover {
    transform: scale(1.1);
    border-color: var(--glass-line-hover);
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.25), 0 12px 28px rgba(4, 8, 22, 0.35), 0 0 16px rgba(110, 200, 242, 0.22);
  }

  [data-theme="light"] .btn:hover {
    border-color: var(--glass-line-hover);
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.65), 0 12px 28px rgba(35, 52, 92, 0.16), 0 0 16px rgba(8, 124, 183, 0.14);
  }
}

.btn:active {
  transform: scale(0.96);
  transition-duration: 0.1s;
}

.btn:focus:not(:focus-visible) {
  outline: none !important;
  border-color: var(--glass-line);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.14), inset 0 -1px 0 var(--glass-line-shadow), 0 3px 10px rgba(0, 0, 0, 0.1);
}

.btn-icon {
  position: relative !important;
  width: 42px !important;
  height: 42px !important;
  min-width: 42px !important;
  min-height: 42px !important;
  max-width: 42px !important;
  max-height: 42px !important;
  flex: 0 0 42px !important;
  aspect-ratio: 1 / 1 !important;
  box-sizing: border-box !important;
  padding: 0 !important;
  display: flex !important;
  align-items: center !important;
  justify-content: center !important;
  overflow: hidden !important;
  border-radius: 14px;
}

.btn-icon svg {
  position: absolute !important;
  top: 50% !important;
  left: 50% !important;
  transform: translate(-50%, -50%) !important;
  width: 20px !important;
  height: 20px !important;
  margin: 0 !important;
  transform-box: fill-box;
  transform-origin: center center;
  pointer-events: none;
  transition: opacity 0.25s ease;
  z-index: 2;
}
[hidden] { display: none !important; }

/* 3态主题图标精准显示控制 */
#theme-icon-sun, #theme-icon-moon, #theme-icon-auto {
  display: none !important;
}

[data-theme-mode="light"] #theme-icon-sun {
  display: block !important;
}

[data-theme-mode="dark"] #theme-icon-moon {
  display: block !important;
}

[data-theme-mode="auto"] #theme-icon-auto,
:root:not([data-theme-mode]) #theme-icon-auto {
  display: block !important;
}

.theme-animating svg {
  animation: iconSwitchSpin 0.45s var(--ease-spring) both;
}

/* 2. 时钟问候看板 */
.hero-section {
  display: grid;
  place-items: center;
  padding: 12px 0 6px;
}

.hero-glass-card {
  width: min(100%, 500px);
  min-height: 176px;
  padding: 24px 48px 26px;
  border-radius: var(--radius-xl);
  text-align: center;
  user-select: none;
  -webkit-user-select: none;
  contain: layout style;
  transition: transform 0.4s var(--ease-spring), box-shadow 0.4s var(--ease-smooth), border-color 0.4s ease;
}

@media (hover: hover) and (pointer: fine) and (min-width: 769px),
       (hover: hover) and (pointer: fine) and (min-width: 641px) and (orientation: landscape) {
.hero-glass-card:hover {
    transform: translateY(-6px) scale(1.025);
    border-color: var(--glass-line-hover);
    box-shadow: 0 24px 56px rgba(4, 8, 22, 0.32), 0 8px 24px rgba(42, 99, 190, 0.15);
  }

  .hero-glass-card:hover .hero-clock {
    transform: scale(1.035);
  }
}

.hero-date {
  margin: 0;
  color: var(--text-secondary);
  font-size: 0.88rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  min-height: 1.35em;
  line-height: 1.35;
}

.hero-clock {
  margin-top: 6px;
  color: var(--text-primary);
  font-size: clamp(3.2rem, 7.5vw, 4.4rem);
  font-weight: 800;
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.065em;
  line-height: 0.98;
  min-height: 1.05em;
  transition: transform 0.35s var(--ease-spring);
}

.hero-greeting-container {
  margin: 12px 0 0;
  color: var(--text-primary);
  font-size: 1.12rem;
  font-weight: 700;
}

.hero-greeting-container #user-display-name {
  color: var(--accent);
  font-weight: 700;
}

/* 3. 搜索栏 */
.search-container {
  position: relative;
  z-index: 40;
  width: min(100%, 680px);
  margin: 0 auto;
}

.search-box-wrapper {
  min-height: 50px;
  padding: 5px 10px 5px 14px;
  border-radius: var(--radius-search);
  display: flex;
  align-items: center;
  -webkit-backdrop-filter: var(--glass-filter);
  backdrop-filter: var(--glass-filter);
  background: var(--glass-surface);
  border: 1px solid var(--glass-line);
  box-shadow: var(--glass-shadow);
  /* 已取消上移动效，移除 transform 位移动画以修复文字移位 bug */
  transform: none;
  will-change: auto;
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
  transition: border-color 0.3s ease, box-shadow 0.35s var(--ease-smooth);
}

.search-box-wrapper:has(.search-input:focus),
.search-container:has(.engine-dropdown.show) .search-box-wrapper,
.search-container:has(.search-history-dropdown.show) .search-box-wrapper {
  border-color: var(--glass-line-hover);
  box-shadow: var(--glass-shadow-hover);
}

[data-theme="light"] .search-box-wrapper:has(.search-input:focus),
[data-theme="light"] .search-container:has(.engine-dropdown.show) .search-box-wrapper,
[data-theme="light"] .search-container:has(.search-history-dropdown.show) .search-box-wrapper {
  border-color: var(--glass-line-hover);
  box-shadow: var(--glass-shadow-hover);
}

/* 悬停抬升仅在有真实悬停能力的设备上生效,避免触屏点按后的粘滞高亮 */
@media (hover: hover) and (pointer: fine) and (min-width: 769px),
       (hover: hover) and (pointer: fine) and (min-width: 641px) and (orientation: landscape) {
.search-box-wrapper:hover {
    border-color: var(--glass-line-hover);
    box-shadow: var(--glass-shadow-hover);
  }
}

/* JS 兜底：已取消上移动效，仅保留边框与阴影高亮 */
.search-box-wrapper.is-elevated,
[data-theme="light"] .search-box-wrapper.is-elevated {
  border-color: var(--glass-line-hover) !important;
  box-shadow: var(--glass-shadow-hover) !important;
}

.engine-selector { position: relative; flex: 0 0 auto; z-index: 100; }

.engine-btn {
  border: 0;
  color: var(--text-primary);
  cursor: pointer;
  background: transparent;
}

.engine-btn {
  min-height: 32px;
  min-width: 88px;
  padding: 0 10px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 5px;
  border-radius: var(--radius-pill);
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text-primary);
  background: transparent;
  flex-shrink: 0;
  /* 移除独立合成层，使文字随父容器原子化移动，避免父子层错位模糊 */
  transform: none;
  backface-visibility: visible;
  -webkit-backface-visibility: visible;
  transition: background 0.18s ease, color 0.18s ease, box-shadow 0.18s ease;
}

@media (hover: hover) and (pointer: fine) and (min-width: 769px),
       (hover: hover) and (pointer: fine) and (min-width: 641px) and (orientation: landscape) {
.engine-btn:hover {
    background: rgba(255, 255, 255, 0.12);
    color: var(--accent);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.12);
  }
}

.engine-btn:active {
  background: rgba(255, 255, 255, 0.18);
  transition-duration: 0.08s;
}

.engine-btn .engine-arrow {
  display: inline-block;
  flex-shrink: 0;
  transform-origin: center center;
  backface-visibility: visible;
  -webkit-backface-visibility: visible;
  transform: translateZ(0) rotate(0deg);
  transition: transform 0.22s var(--ease-spring), color 0.18s ease;
}

@media (hover: hover) and (pointer: fine) and (min-width: 769px),
       (hover: hover) and (pointer: fine) and (min-width: 641px) and (orientation: landscape) {
.engine-btn:hover .engine-arrow {
    transform: translateZ(0) translateY(2.5px) rotate(0deg);
  }
}

.engine-btn[aria-expanded="true"] .engine-arrow {
  transform: translateZ(0) rotate(180deg);
}

/* 修复搜索栏悬浮时内部文字模糊与错位：文字层不单独提升合成层，随父容器原子化移动 */
#current-engine-name,
.search-input,
.search-input::placeholder {
  transform: none !important;
  backface-visibility: visible !important;
  -webkit-backface-visibility: visible !important;
  filter: none !important;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

/* 下拉菜单沿用主玻璃材质，绝对定位悬浮，绝不挤压或推开下方卡片 */
/* 下拉菜单沿用统一液态玻璃材质，透明度与景深模糊与全站完全一致 */
.engine-dropdown,
.rdev-glass.engine-dropdown {
  position: absolute !important;
  top: calc(100% + 8px) !important;
  left: 12px !important;
  width: max-content;
  min-width: 176px;
  padding: 8px;
  border-radius: var(--radius-search);
  display: none;
  gap: 4px;
  z-index: 9999 !important;
  transform-origin: top left;
  pointer-events: auto;
  -webkit-backdrop-filter: var(--glass-filter);
  backdrop-filter: var(--glass-filter);
  background: var(--glass-surface);
  border: 1px solid var(--glass-line);
  box-shadow: var(--glass-shadow);
}

.engine-dropdown.show {
  display: grid !important;
  animation: dropdownSpring 0.35s var(--ease-spring) both;
}

.engine-option {
  min-height: 42px;
  padding: 0 14px;
  border: 0;
  border-radius: 12px;
  color: var(--text-primary);
  cursor: pointer;
  background: transparent;
  font-size: 0.92rem;
  font-weight: 600;
  text-align: left;
  transition: color 0.18s ease, background 0.18s ease, transform 0.18s var(--ease-smooth);
}

@media (hover: hover) and (pointer: fine) and (min-width: 769px),
       (hover: hover) and (pointer: fine) and (min-width: 641px) and (orientation: landscape) {
.engine-option:hover {
    color: var(--accent);
    background: rgba(255, 255, 255, 0.12);
    transform: translateX(8px);
    transition: color 0.18s ease, background 0.18s ease, transform 0.22s var(--ease-spring);
  }
}

.engine-option:active {
  transform: translateX(4px) scale(0.96);
  transition-duration: 0.08s;
}

.engine-option.active {
  background: var(--accent-soft);
  box-shadow: inset 0 0 0 1px rgba(150, 221, 255, 0.35);
  color: var(--accent);
  font-weight: 700;
}

.search-divider {
  width: 1px;
  height: 22px;
  background: linear-gradient(transparent, rgba(255, 255, 255, 0.42), transparent);
  margin: 0 4px;
}

/* 搜索历史记录下拉浮层 (Liquid Glass History Card) */
.search-history-dropdown {
  display: none;
  position: absolute;
  top: calc(100% + 10px);
  left: 0;
  right: 0;
  width: 100%;
  padding: 10px 12px;
  border-radius: var(--radius-search);
  box-sizing: border-box;
  z-index: 9998 !important;
  pointer-events: auto;
  -webkit-backdrop-filter: var(--glass-filter);
  backdrop-filter: var(--glass-filter);
  background: var(--glass-surface);
  border: 1px solid var(--glass-line);
  box-shadow: var(--glass-shadow);
  transform-origin: top center;
}

.search-history-dropdown.show {
  display: flex !important;
  flex-direction: column;
  animation: dropdownSpring 0.32s var(--ease-spring) both;
}

.search-history-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 2px 4px 8px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  margin-bottom: 4px;
}

[data-theme="light"] .search-history-header {
  border-bottom-color: rgba(30, 60, 110, 0.08);
}

.search-history-title {
  font-size: 0.76rem;
  font-weight: 700;
  color: var(--text-secondary);
  letter-spacing: 0.04em;
}

.search-history-clear-all {
  font-size: 0.76rem;
  font-weight: 600;
  color: var(--text-secondary);
  cursor: pointer;
  border: none;
  background: transparent;
  border-radius: 6px;
  padding: 2px 8px;
  transition: color 0.18s ease, background 0.18s ease;
}

@media (hover: hover) and (pointer: fine) and (min-width: 769px),
       (hover: hover) and (pointer: fine) and (min-width: 641px) and (orientation: landscape) {
.search-history-clear-all:hover {
    color: #ff6b8b;
    background: rgba(255, 107, 139, 0.12);
  }
}

.search-history-list {
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.search-history-item {
  display: flex;
  align-items: center;
  gap: 10px;
  min-height: 38px;
  padding: 0 10px;
  border-radius: 11px;
  cursor: pointer;
  color: var(--text-primary);
  font-size: 0.9rem;
  font-weight: 500;
  transition: background 0.18s ease, transform 0.18s var(--ease-smooth);
}

.search-history-item:focus-visible {
  background: rgba(255, 255, 255, 0.12);
  color: var(--accent);
  transform: translateX(4px);
  outline: none;
}

@media (hover: hover) and (pointer: fine) and (min-width: 769px),
       (hover: hover) and (pointer: fine) and (min-width: 641px) and (orientation: landscape) {
.search-history-item:hover {
    background: rgba(255, 255, 255, 0.12);
    color: var(--accent);
    transform: translateX(4px);
  }
}

[data-theme="light"] .search-history-item:focus-visible {
  background: rgba(66, 129, 255, 0.08);
  color: var(--accent);
}

@media (hover: hover) and (pointer: fine) and (min-width: 769px),
       (hover: hover) and (pointer: fine) and (min-width: 641px) and (orientation: landscape) {
[data-theme="light"] .search-history-item:hover {
    background: rgba(66, 129, 255, 0.08);
    color: var(--accent);
  }
}

.search-history-icon {
  color: var(--text-secondary);
  opacity: 0.65;
  flex-shrink: 0;
}

.search-history-text {
  flex: 1;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.search-history-delete-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  padding: 0;
  border-radius: 6px;
  border: none;
  background: transparent;
  color: var(--text-secondary);
  cursor: pointer;
  opacity: 0.5;
  transition: opacity 0.18s ease, background 0.18s ease, color 0.18s ease, transform 0.18s var(--ease-spring);
}

@media (hover: hover) and (pointer: fine) and (min-width: 769px),
       (hover: hover) and (pointer: fine) and (min-width: 641px) and (orientation: landscape) {
.search-history-delete-btn:hover {
    opacity: 1;
    color: #ff6b8b;
    background: rgba(255, 107, 139, 0.15);
    transform: scale(1.15);
  }
}

.search-input {
  min-width: 0;
  flex: 1;
  padding: 8px 12px;
  border: none !important;
  outline: none !important;
  box-shadow: none !important;
  color: var(--text-primary);
  background: transparent !important;
  font-size: 0.94rem;
  font-weight: 600;
  -webkit-appearance: none;
  appearance: none;
}

.search-input:focus,
.search-input:focus-visible,
.search-input:active {
  outline: none !important;
  border: none !important;
  box-shadow: none !important;
  background: transparent !important;
}

.search-input::-webkit-search-decoration,
.search-input::-webkit-search-cancel-button,
.search-input::-webkit-search-results-button,
.search-input::-webkit-search-results-decoration {
  display: none;
  -webkit-appearance: none;
}

.search-input::placeholder {
  color: var(--text-secondary);
  opacity: 0.75;
  font-weight: 500;
}

.engine-btn:focus:not(:focus-visible) {
  outline: none !important;
  box-shadow: none !important;
}

/* 4. 服务卡片与左右滑动轮播系统 (基于 Transform 硬件加速滑轨：100% 绝对水平中轴对称，漫反射光影全向无截断，下一组完全隐藏) */
.sites-section {
  position: relative;
  width: 100%;
  margin-top: 16px;
  display: flex;
  justify-content: center;
  align-items: center;
}

/* 轮播漫反射视口：上下纵向极致超级扩容（上 120px、左右 80px、下 160px），总计 280px 超宽裕纵深，让液态玻璃浮动光影与 80px+ 弥散深邃阴影 100% 完整舒展自然淡出 */
.carousel-viewport {
  width: 100%;
  overflow: hidden;
  padding: 120px 80px 160px;
  margin: -120px -80px -160px;
  box-sizing: content-box;
}

/* 硬件加速滑动轨道 */
.cards-track {
  --page-gap: 240px; /* 大跨度 240px 组间距，彻底拉开不同组别之间的间隙 */
  display: flex;
  width: 100%;
  gap: var(--page-gap);
  transition: transform 0.55s cubic-bezier(0.22, 1, 0.36, 1);
  will-change: transform;
}

/* 每 3 个卡片为一组的独立分页容器 (100% 严格贴合主视口宽度并水平中心对称，不足 3 个时其余槽位自然空出) */
.cards-page {
  flex: 0 0 100%;
  min-width: 100%;
  max-width: 100%;
  width: 100%;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
  box-sizing: border-box;
  margin: 0;
  justify-content: center;
  align-items: stretch;
}

.site-card {
  position: relative;
  overflow: hidden;
  touch-action: pan-y manipulation;
  -webkit-touch-callout: none;
  -webkit-user-drag: none;
  user-select: none;
  -webkit-user-select: none;
  min-width: 0;
  min-height: 216px;
  padding: 24px;
  border-radius: var(--radius-lg);
  display: flex;
  flex-direction: column;
  gap: 18px;
  color: inherit;
  text-decoration: none;
  cursor: pointer;
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
  transform: translateZ(0);
  transition: transform 0.35s var(--ease-smooth), border-color 0.3s ease, box-shadow 0.35s var(--ease-smooth), background 0.3s ease;
  box-sizing: border-box;
}

@media (hover: hover) and (pointer: fine) and (min-width: 769px),
       (hover: hover) and (pointer: fine) and (min-width: 641px) and (orientation: landscape) {
.site-card:hover {
    transform: translateY(-8px) translateZ(0);
    border-color: var(--glass-line-hover);
    box-shadow: 0 26px 56px rgba(4, 8, 22, 0.46), 0 10px 28px rgba(66, 129, 255, 0.22);
  }
}

.site-card.pressed {
  transform: translateY(-2px) translateZ(0);
  transition-duration: 0.08s;
}

/* 轮播导航翻页按钮 (液态玻璃质感悬浮控制，进一步外移至 -96px 彻底远离卡片与四周外扩光影) */
.carousel-nav-btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  z-index: 25;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  border: 1px solid var(--glass-line);
  background: var(--glass-surface-soft);
  box-shadow: 0 8px 24px rgba(3, 8, 23, 0.28), inset 0 1px 0 rgba(255, 255, 255, 0.2);
  -webkit-backdrop-filter: var(--glass-filter);
  backdrop-filter: var(--glass-filter);
  color: var(--text-primary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.28s var(--ease-spring), opacity 0.25s ease, background 0.25s ease, box-shadow 0.28s ease, border-color 0.25s ease;
  opacity: 0;
  pointer-events: none;
}

[data-theme="light"] .carousel-nav-btn {
  box-shadow: 0 8px 24px rgba(35, 52, 92, 0.12), inset 0 1px 0 rgba(255, 255, 255, 0.6);
}

.carousel-prev {
  left: -96px;
}

.carousel-next {
  right: -96px;
}

@media (max-width: 1440px) {
  .carousel-prev {
    left: -76px;
  }
  .carousel-next {
    right: -76px;
  }
}

@media (max-width: 1360px) {
  .carousel-prev {
    left: -58px;
  }
  .carousel-next {
    right: -58px;
  }
}

.carousel-nav-btn.visible {
  opacity: 0.94;
  pointer-events: auto;
}

@media (hover: hover) and (pointer: fine) and (min-width: 769px),
       (hover: hover) and (pointer: fine) and (min-width: 641px) and (orientation: landscape) {
.carousel-nav-btn:hover {
    opacity: 1;
    transform: translateY(-50%) scale(1.12);
    border-color: var(--glass-line-hover);
    box-shadow: 0 12px 28px rgba(4, 8, 22, 0.4), 0 0 16px rgba(110, 200, 242, 0.22);
  }
}

.carousel-nav-btn:active {
  transform: translateY(-50%) scale(0.94);
  transition-duration: 0.08s;
}

.site-card-top, .site-card-footer {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.site-card-meta { min-width: 0; display: flex; align-items: center; gap: 14px; }

.site-icon {
  position: relative !important;
  width: 56px;
  height: 56px;
  flex: 0 0 auto;
  padding: 7px;
  overflow: hidden !important;
  border: 1px solid var(--glass-line);
  border-radius: 17px;
  display: flex !important;
  align-items: center !important;
  justify-content: center !important;
  color: var(--text-primary);
  background: var(--glass-surface);
  box-shadow: var(--glass-shadow);
  -webkit-backdrop-filter: var(--glass-filter);
  backdrop-filter: var(--glass-filter);
  transition: transform 0.45s var(--ease-spring), box-shadow 0.35s ease;
}

@media (hover: hover) and (pointer: fine) and (min-width: 769px),
       (hover: hover) and (pointer: fine) and (min-width: 641px) and (orientation: landscape) {
.site-card:hover .site-icon {
    transform: translateY(-6px) scale(1.16) rotate(6deg);
    box-shadow: 0 12px 26px rgba(66, 129, 255, 0.35);
  }
}

.site-icon img,
.site-icon svg {
  position: relative !important;
  z-index: 2 !important;
  width: 100% !important;
  height: 100% !important;
  max-width: 100% !important;
  max-height: 100% !important;
  object-fit: contain !important;
  pointer-events: none !important;
  user-select: none !important;
  -webkit-user-drag: none !important;
  transform: none !important;
  margin: 0 !important;
}

[data-theme="dark"] .site-icon img[src*="notes-logo"],
:root:not([data-theme="light"]) .site-icon img[src*="notes-logo"] {
  filter: brightness(0) invert(1);
}

[data-theme="light"] .site-icon img[src*="notes-logo"] {
  filter: none;
}

/* CPA 图标为满幅直角方形，按主题容器圆角比例（17/56 ≈ 30%）等比例圆角，随断点自动缩放 */
.site-icon img[src*="cpa-logo"] {
  border-radius: 30%;
}

.site-icon-emoji {
  position: relative !important;
  z-index: 2 !important;
  font-size: 1.55rem;
  line-height: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  user-select: none;
}

.site-title-box { min-width: 0; display: grid; gap: 4px; }

.site-name {
  margin: 0;
  overflow: hidden;
  font-size: 1.16rem;
  font-weight: 700;
  line-height: 1.25;
  text-overflow: ellipsis;
  white-space: nowrap;
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
  transform: translateZ(0);
  transition: color 0.25s ease;
}

@media (hover: hover) and (pointer: fine) and (min-width: 769px),
       (hover: hover) and (pointer: fine) and (min-width: 641px) and (orientation: landscape) {
.site-card:hover .site-name {
    color: var(--accent);
  }
}

.site-category-badge {
  width: fit-content;
  max-width: 100%;
  overflow: hidden;
  padding: 3px 9px;
  border: 1px solid rgba(159, 219, 255, 0.26);
  border-radius: var(--radius-pill);
  color: var(--accent);
  background: var(--accent-soft);
  font-size: 0.76rem;
  font-weight: 700;
  line-height: 1.35;
  text-overflow: ellipsis;
  white-space: nowrap;
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
  transform: translateZ(0);
  transition: background 0.25s ease, border-color 0.25s ease;
}

@media (hover: hover) and (pointer: fine) and (min-width: 769px),
       (hover: hover) and (pointer: fine) and (min-width: 641px) and (orientation: landscape) {
.site-card:hover .site-category-badge {
    border-color: rgba(159, 219, 255, 0.5);
    background: rgba(118, 213, 255, 0.32);
  }
}

.site-desc {
  position: relative;
  z-index: 1;
  flex: 1;
  display: -webkit-box;
  overflow: hidden;
  color: var(--text-primary);
  opacity: 0.92;
  font-size: 0.92rem;
  font-weight: 500;
  line-height: 1.62;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 2;
}

.site-card-footer {
  padding-top: 14px;
  border-top: 1px solid rgba(255, 255, 255, 0.22);
  color: var(--text-secondary);
  font-size: 0.82rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  justify-content: flex-end;
}

.site-direct-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--accent);
  font-size: 0.82rem;
  font-weight: 700;
  transition: transform 0.35s var(--ease-spring), color 0.3s ease;
}

.site-direct-link svg {
  transition: transform 0.35s var(--ease-spring);
}

@media (hover: hover) and (pointer: fine) and (min-width: 769px),
       (hover: hover) and (pointer: fine) and (min-width: 641px) and (orientation: landscape) {
.site-card:hover .site-direct-link {
    color: var(--text-primary);
    transform: translateX(6px);
  }

  .site-card:hover .site-direct-link svg {
    transform: translate(4px, -4px);
  }
}

/* 液态水波纹点击动效 (Liquid Ripple) */
.liquid-ripple {
  position: absolute !important;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.45) 0%, rgba(255, 255, 255, 0) 70%);
  pointer-events: none !important;
  transform: scale(0);
  animation: rippleSpread 0.6s cubic-bezier(0.1, 0.9, 0.2, 1) forwards;
  z-index: 10 !important;
}

@keyframes rippleSpread {
  0% {
    transform: scale(0);
    opacity: 0.8;
  }
  100% {
    transform: scale(2.4);
    opacity: 0;
  }
}

.empty-state {
  min-height: 220px;
  padding: 38px 20px;
  border-radius: var(--radius-lg);
  display: grid;
  place-items: center;
  text-align: center;
}

.empty-state > div { max-width: 390px; }
.empty-icon {
  width: 46px;
  height: 46px;
  margin: 0 auto 12px;
  padding: 10px;
  border: 1px solid rgba(255, 255, 255, 0.4);
  border-radius: 16px;
  color: var(--accent);
  background: rgba(255, 255, 255, 0.14);
}

.empty-title { color: var(--text-primary); font-size: 1.05rem; font-weight: 700; }
.empty-desc { margin-top: 5px; color: var(--text-secondary); font-size: 0.9rem; font-weight: 500; }

.footer-bar {
  position: fixed;
  bottom: max(14px, env(safe-area-inset-bottom, 14px));
  left: 50%;
  transform: translateX(-50%);
  z-index: 20;
  margin: 0;
  padding: 4px 14px;
  color: var(--text-secondary);
  font-size: 0.82rem;
  font-weight: 600;
  text-align: center;
  white-space: nowrap;
  letter-spacing: 0.04em;
  text-shadow: 0 2px 8px rgba(0, 0, 0, 0.38);
  pointer-events: none;
  user-select: none;
  -webkit-user-select: none;
}

[data-theme="light"] .footer-bar {
  text-shadow: 0 1px 6px rgba(255, 255, 255, 0.75);
}

/* 动效帧 */
@keyframes dropdownSpring {
  from {
    opacity: 0;
    transform: translateY(-10px) scale(0.92);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

@keyframes iconSwitchSpin {
  0% {
    transform: translate(-50%, -50%) rotate(-90deg) scale(0.6);
    opacity: 0;
  }
  65% {
    transform: translate(-50%, -50%) rotate(12deg) scale(1.06);
  }
  100% {
    transform: translate(-50%, -50%) rotate(0deg) scale(1);
    opacity: 1;
  }
}

@supports not ((-webkit-backdrop-filter: blur(1px)) or (backdrop-filter: blur(1px))) {
  .liquid-glass,
  .site-card,
  .site-icon,
  .search-box-wrapper,
  .hero-glass-card,
  .engine-dropdown,
  .empty-state {
    background: rgba(18, 25, 43, 0.92) !important;
  }

  [data-theme="light"] .liquid-glass,
  [data-theme="light"] .site-card,
  [data-theme="light"] .site-icon,
  [data-theme="light"] .search-box-wrapper,
  [data-theme="light"] .hero-glass-card,
  [data-theme="light"] .engine-dropdown,
  [data-theme="light"] .empty-state {
    background: rgba(240, 245, 255, 0.94) !important;
  }
}

/* ==========================================================================
   响应式与竖屏状态专项优化 (Portrait & Mobile Responsive Optimization)
   ========================================================================== */

/* 平板与中等屏幕 (竖屏或折叠屏) */
@media (max-width: 900px) {
  .app-container { width: min(100% - 32px, 720px); padding: 24px 0 42px; gap: 28px; }
  .hero-glass-card { width: min(100%, 460px); padding: 20px 36px 22px; }
}

/* 手机竖屏状态 (宽度 <= 640px 或竖屏屏幕：固定页面高度 100dvh，彻底锁定禁止上下滚动) */
@media (max-width: 640px), (orientation: portrait) and (max-width: 768px) {
  html, body {
    height: 100%;
    height: 100dvh;
    max-height: 100dvh;
    overflow: hidden !important;
    overscroll-behavior: none !important;
    overscroll-behavior-y: none !important;
    touch-action: pan-x;
  }

  .app-container {
    width: 100%;
    max-width: 500px;
    height: 100%;
    height: 100dvh;
    max-height: 100dvh;
    padding: max(16px, env(safe-area-inset-top, 16px)) 18px max(18px, env(safe-area-inset-bottom, 18px));
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    gap: 14px;
    overflow: visible;
    touch-action: pan-x;
    box-sizing: border-box;
  }

  /* 1. 顶部极简状态条 (仅保留 Logo 与主题切换) */
  .header-bar,
  .header-bar:hover,
  .header-bar:active,
  .header-bar:focus,
  .header-bar:focus-within {
    min-height: 44px;
    padding: 0 2px;
    border-radius: 0;
    border: none !important;
    background: transparent !important;
    box-shadow: none !important;
    backdrop-filter: none !important;
    -webkit-backdrop-filter: none !important;
    overflow: visible;
  }

  .header-bar::before,
  .header-bar::after {
    display: none !important;
  }

  .brand-mark {
    width: 42px;
    height: 42px;
    padding: 5px;
    border-radius: 14px;
    background-clip: padding-box;
    border: 1px solid var(--glass-line);
    background: linear-gradient(145deg, var(--glass-fill-top), var(--glass-fill-bottom));
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.25),
                inset 0 -1px 0 rgba(0, 0, 0, 0.16),
                0 6px 20px rgba(3, 8, 23, 0.32),
                0 0 16px rgba(110, 200, 242, 0.18);
    -webkit-backdrop-filter: var(--glass-filter);
    backdrop-filter: var(--glass-filter);
  }

  [data-theme="light"] .brand-mark {
    border-color: var(--glass-line);
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.6),
                inset 0 -1px 0 rgba(70, 100, 160, 0.1),
                0 6px 18px rgba(35, 52, 92, 0.12),
                0 0 14px rgba(66, 129, 255, 0.14);
  }

  .brand-title {
    font-size: 0.94rem;
    font-weight: 700;
  }

  .brand-subtitle {
    display: none;
  }

  .btn-icon {
    position: relative !important;
    width: 38px !important;
    height: 38px !important;
    min-width: 38px !important;
    min-height: 38px !important;
    max-width: 38px !important;
    max-height: 38px !important;
    flex: 0 0 38px !important;
    aspect-ratio: 1 / 1 !important;
    box-sizing: border-box !important;
    padding: 0 !important;
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
    border-radius: 13px;
    overflow: hidden !important;
    background-clip: padding-box;
    border: 1px solid var(--glass-line);
    background: var(--glass-surface-soft);
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.25),
                inset 0 -1px 0 var(--glass-line-shadow),
                0 6px 20px rgba(3, 8, 23, 0.32),
                0 0 16px rgba(110, 200, 242, 0.18);
    -webkit-backdrop-filter: var(--glass-filter);
    backdrop-filter: var(--glass-filter);
  }

  .btn-icon svg {
    position: absolute !important;
    top: 50% !important;
    left: 50% !important;
    transform: translate(-50%, -50%) !important;
    width: 18px !important;
    height: 18px !important;
    margin: 0 !important;
    transform-box: fill-box;
    transform-origin: center center;
    pointer-events: none;
    transition: opacity 0.25s ease;
    z-index: 2;
  }

  [data-theme="light"] .btn-icon {
    border-color: var(--glass-line);
    background: var(--glass-surface-soft);
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.6),
                inset 0 -1px 0 var(--glass-line-shadow),
                0 6px 18px rgba(35, 52, 92, 0.12),
                0 0 14px rgba(66, 129, 255, 0.14);
  }

  /* 2. 拟态锁屏艺术时钟 (直接悬浮于壁纸上，零背景框，杜绝点击提亮) */
  .hero-section {
    padding: 4px 0 0;
    pointer-events: none;
  }

  .hero-glass-card,
  .hero-glass-card:hover,
  .hero-glass-card:active,
  .hero-glass-card:focus,
  .hero-glass-card:focus-within {
    width: 100%;
    padding: 0;
    border-radius: 0;
    border: none !important;
    background: transparent !important;
    box-shadow: none !important;
    backdrop-filter: none !important;
    -webkit-backdrop-filter: none !important;
    transform: none !important;
  }

  .hero-glass-card::before,
  .hero-glass-card::after {
    display: none !important;
  }

  .hero-glass-card:hover .hero-clock,
  .hero-glass-card:active .hero-clock {
    transform: none !important;
    color: var(--text-primary) !important;
  }

  .hero-date {
    font-size: 0.86rem;
    font-weight: 600;
    opacity: 0.85;
    letter-spacing: 0.04em;
    color: var(--text-secondary);
  }

  .hero-clock {
    margin-top: 2px;
    font-size: clamp(3.2rem, 14.5vw, 4.4rem);
    font-weight: 800;
    letter-spacing: -0.055em;
    line-height: 0.95;
    color: var(--text-primary);
    opacity: 0.88;
  }

  .hero-greeting-container {
    margin: 6px 0 0;
    font-size: 0.96rem;
    font-weight: 600;
    opacity: 0.85;
    color: var(--text-primary);
  }

  /* 3. 搜索栏：全向漫反射大范围光影，去除 contain:paint 裁剪 */
  .search-container {
    position: relative;
    transform: none;
    width: 100%;
    margin: 4px 0 0;
    padding: 0 2px;
    box-sizing: border-box;
    overflow: visible;
    z-index: 50;
  }

  .search-box-wrapper {
    min-height: 42px;
    padding: 3px 6px 3px 9px;
    border-radius: var(--radius-search);
    overflow: hidden;
    background-clip: padding-box;
    border: 1px solid var(--glass-line);
    background: var(--glass-surface);
    box-shadow: var(--glass-shadow);
    backdrop-filter: var(--glass-filter);
    -webkit-backdrop-filter: var(--glass-filter);
    transform: none;
    will-change: auto;
    backface-visibility: hidden;
    -webkit-backface-visibility: hidden;
    transition: box-shadow 0.3s ease, border-color 0.3s ease;
  }

  .search-box-wrapper::before,
  .search-box-wrapper::after {
    display: none !important;
  }

  .search-box-wrapper:has(.search-input:focus),
  .search-container:has(.engine-dropdown.show) .search-box-wrapper,
  .search-container:has(.search-history-dropdown.show) .search-box-wrapper {
    border-color: var(--glass-line-hover);
    box-shadow: var(--glass-shadow-hover) !important;
  }

  [data-theme="light"] .search-box-wrapper:has(.search-input:focus),
  [data-theme="light"] .search-container:has(.engine-dropdown.show) .search-box-wrapper,
  [data-theme="light"] .search-container:has(.search-history-dropdown.show) .search-box-wrapper {
    border-color: var(--glass-line-hover);
    box-shadow: var(--glass-shadow-hover) !important;
  }

  .engine-btn {
    min-height: 30px;
    min-width: 80px;
    padding: 0 8px;
    font-size: 0.78rem;
    justify-content: center;
  }

  .search-divider {
    height: 18px;
    margin: 0 2px;
    background: linear-gradient(transparent, rgba(255, 255, 255, 0.35), transparent);
  }

  .search-input,
  .search-input:focus,
  .search-input:focus-visible {
    padding: 6px 8px;
    font-size: 16px;
    border: none !important;
    outline: none !important;
    box-shadow: none !important;
    background: transparent !important;
  }

  .engine-dropdown,
  .rdev-glass.engine-dropdown {
    position: absolute !important;
    top: calc(100% + 8px) !important;
    bottom: auto !important;
    left: 2px !important;
    min-width: 170px;
    max-width: calc(100% - 4px);
    padding: 8px;
    border-radius: var(--radius-search);
    overflow: hidden;
    background-clip: padding-box;
    border: 1px solid var(--glass-line);
    background: var(--glass-surface);
    box-shadow: var(--glass-shadow);
    -webkit-backdrop-filter: var(--glass-filter);
    backdrop-filter: var(--glass-filter);
    z-index: 9999 !important;
    display: none;
  }

  .engine-dropdown.show {
    display: grid !important;
    animation: dropdownSpring 0.35s var(--ease-spring) both;
  }

  .search-history-dropdown {
    position: absolute !important;
    top: calc(100% + 8px) !important;
    bottom: auto !important;
    left: 0 !important;
    right: 0 !important;
    width: 100% !important;
    max-width: 100%;
    padding: 10px 12px;
    border-radius: var(--radius-search);
    box-sizing: border-box;
    z-index: 9998 !important;
    -webkit-backdrop-filter: var(--glass-filter);
    backdrop-filter: var(--glass-filter);
    background: var(--glass-surface);
    border: 1px solid var(--glass-line);
    box-shadow: var(--glass-shadow);
    display: none;
  }

  .search-history-dropdown.show {
    display: flex !important;
    flex-direction: column;
    gap: 8px;
    animation: dropdownSpring 0.35s var(--ease-spring) both;
  }

  .engine-option {
    min-height: 40px;
    padding: 0 12px;
    font-size: 0.88rem;
    border-radius: 12px;
  }

  /* 移动端隐藏配置中标记 mobile: false 的搜索引擎选项 */
  .engine-option[data-mobile="false"] {
    display: none !important;
  }

  /* 4. 服务跳转按钮 (位于搜索栏正下方，分组轮播，每组固定 3 个图标，手势滑动切换) */
  .sites-section {
    position: relative;
    width: 100%;
    overflow: visible;
    margin-top: 10px;
    margin-bottom: 0;
    padding: 8px 0 6px;
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 10;
  }

  .carousel-container {
    position: relative;
    width: 100%;
    max-width: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
  }

  .carousel-viewport {
    width: 100%;
    overflow: hidden;
    padding: 14px 0 18px;
    margin: -14px 0 -18px;
    box-sizing: content-box;
    touch-action: pan-y;
  }

  .cards-track {
    --page-gap: 32px;
    display: flex;
    width: 100%;
    gap: var(--page-gap);
    transition: transform 0.45s cubic-bezier(0.22, 1, 0.36, 1);
    will-change: transform;
    touch-action: pan-y;
  }

  /* 每组严格固定 3 个图标槽位，不足 3 个时槽位自然空出 */
  .cards-page {
    flex: 0 0 100%;
    width: 100%;
    min-width: 100%;
    max-width: 100%;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    justify-items: center;
    align-items: start;
    gap: 8px;
    margin: 0;
    padding: 0 4px;
    box-sizing: border-box;
  }

  .site-card {
    position: relative;
    width: 100%;
    max-width: 88px;
    min-height: auto;
    padding: 4px 0 2px;
    border: none;
    background: transparent;
    box-shadow: none;
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
    overflow: visible;
    contain: none;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
    text-align: center;
    border-radius: 0;
  }

  .site-card::before,
  .site-card::after {
    display: none !important;
  }

  .site-card:hover, .site-card.pressed {
    transform: none;
    box-shadow: none;
  }

  .site-card-top, .site-card-meta {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
    overflow: visible;
    width: 100%;
  }

  /* 底部 App 图标：统一新版高通透液态玻璃材质 */
  .site-icon {
    position: relative !important;
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
    box-sizing: border-box !important;
    overflow: hidden !important;
    width: 58px !important;
    height: 58px !important;
    padding: 10px !important;
    border-radius: 17px !important;
    background-clip: padding-box;
    border: 1px solid var(--glass-line);
    background: var(--glass-surface);
    box-shadow: var(--glass-shadow);
    -webkit-backdrop-filter: var(--glass-filter);
    backdrop-filter: var(--glass-filter);
    transition: transform 0.28s var(--ease-spring), box-shadow 0.28s ease;
  }

  [data-theme="dark"] .site-icon {
    border-color: var(--glass-line);
    background: var(--glass-surface);
    box-shadow: var(--glass-shadow);
  }

  [data-theme="light"] .site-icon {
    border-color: var(--glass-line);
    background: var(--glass-surface);
    box-shadow: var(--glass-shadow);
  }

  .site-card.pressed .site-icon {
    transform: scale(0.92) !important;
    box-shadow: 0 2px 8px rgba(4, 8, 22, 0.2) !important;
    transition-duration: 0.08s;
  }

  .site-title-box {
    align-items: center;
    text-align: center;
    width: 100%;
    max-width: 84px;
  }

  .site-name {
    width: 100%;
    max-width: 100%;
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--text-primary);
    line-height: 1.2;
    text-align: center;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
  }

  .site-category-badge,
  .site-desc,
  .site-card-footer {
    display: none !important;
  }

  .carousel-nav-btn,
  .carousel-pagination {
    display: none !important;
  }

  .footer-bar {
    display: none;
  }
}

/* 超窄屏手机 */
@media (max-width: 360px) {
  .app-container { width: calc(100% - 16px); gap: 14px; }
  .header-bar { padding: 6px 10px; }
  .brand-title { font-size: 0.92rem; }
  .brand-subtitle { display: none; }
  .hero-glass-card { padding: 14px 14px 16px; }
  .hero-clock { font-size: 2.1rem; }
  .engine-btn { padding: 0 4px; font-size: 0.78rem; }
  .site-card { padding: 14px; }
}

/* ==========================================================================
   rdev/liquid-glass-react 本地试验版
   背景像素在独立层折射，内容保持清晰；轮廓只绘制一次遮罩高光。
   ========================================================================== */
.rdev-glass-defs {
  position: fixed;
  width: 0;
  height: 0;
  overflow: hidden;
  pointer-events: none;
}

.rdev-glass {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  border: 0 !important;
  background: transparent !important;
  -webkit-backdrop-filter: none !important;
  backdrop-filter: none !important;
  box-shadow: 0 12px 36px rgba(0, 0, 0, 0.22);
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
  transition: transform 0.38s var(--ease-spring), box-shadow 0.38s var(--ease-smooth);
}

[data-theme="light"] .rdev-glass {
  box-shadow: 0 12px 36px rgba(37, 50, 86, 0.1);
}

.rdev-glass-warp {
  position: absolute !important;
  z-index: 0 !important;
  inset: 0;
  display: block;
  overflow: hidden;
  border-radius: inherit;
  pointer-events: none;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.02), rgba(10, 16, 34, 0.025));
  -webkit-backdrop-filter: blur(2.5px) saturate(122%);
  backdrop-filter: blur(2.5px) saturate(122%);
  transform: translateZ(0);
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
}

[data-theme="light"] .rdev-glass-warp {
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.065), rgba(210, 224, 249, 0.015));
  -webkit-backdrop-filter: blur(2.5px) saturate(116%);
  backdrop-filter: blur(2.5px) saturate(116%);
}

.rdev-glass > :not(.rdev-glass-warp) {
  position: relative;
  z-index: 2;
}

.rdev-glass::before {
  position: absolute;
  z-index: 1;
  inset: 0;
  display: block !important;
  border-radius: inherit;
  content: "";
  pointer-events: none;
  background:
    radial-gradient(120% 92% at 18% -18%, rgba(255, 255, 255, 0.08), transparent 68%),
    linear-gradient(115deg, rgba(255, 255, 255, 0.015), transparent 48%);
  opacity: 0.30;
  transition: opacity 0.35s ease;
}

[data-theme="light"] .rdev-glass::before {
  background:
    radial-gradient(120% 92% at 18% -18%, rgba(255, 255, 255, 0.18), transparent 68%),
    linear-gradient(115deg, rgba(255, 255, 255, 0.03), transparent 48%);
  opacity: 0.34;
}

.rdev-glass::after {
  position: absolute;
  z-index: 3;
  inset: 0;
  display: block !important;
  padding: 1px;
  border: 0;
  border-radius: inherit;
  content: "";
  pointer-events: none;
  background: linear-gradient(
    138deg,
    rgba(255, 255, 255, 0.42) 0%,
    rgba(255, 255, 255, 0.18) 30%,
    rgba(255, 255, 255, 0.08) 56%,
    rgba(120, 175, 255, 0.14) 80%,
    rgba(255, 255, 255, 0.28) 100%
  );
  box-shadow: none !important;
  opacity: 0.68;
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  transition: opacity 0.35s ease, background 0.35s ease;
}

[data-theme="light"] .rdev-glass::after {
  background: linear-gradient(
    138deg,
    rgba(255, 255, 255, 0.75) 0%,
    rgba(255, 255, 255, 0.32) 30%,
    rgba(255, 255, 255, 0.16) 58%,
    rgba(90, 125, 190, 0.22) 100%
  );
  opacity: 0.75;
}

/* 悬停时增强折射边缘反光与高光 */
@media (hover: hover) and (pointer: fine) and (min-width: 769px),
       (hover: hover) and (pointer: fine) and (min-width: 641px) and (orientation: landscape) {
.rdev-glass:hover::before {
    opacity: 0.88;
  }

  .rdev-glass:hover::after {
    opacity: 0.95;
  }
}

/* 各组件在 rdev-glass 折射模式下的灵动动效与层级投影 */
.rdev-glass.brand-mark {
  box-shadow: 0 4px 14px rgba(3, 8, 23, 0.18);
}

@media (hover: hover) and (pointer: fine) and (min-width: 769px),
       (hover: hover) and (pointer: fine) and (min-width: 641px) and (orientation: landscape) {
.rdev-glass.brand-mark:hover {
    transform: translateY(-4px) scale(1.14) rotate(6deg);
    box-shadow: 0 12px 28px rgba(66, 129, 255, 0.32);
  }
}

.rdev-glass.btn {
  box-shadow: 0 4px 14px rgba(3, 8, 23, 0.18);
}

@media (hover: hover) and (pointer: fine) and (min-width: 769px),
       (hover: hover) and (pointer: fine) and (min-width: 641px) and (orientation: landscape) {
.rdev-glass.btn:hover {
    transform: scale(1.1);
    box-shadow: 0 12px 28px rgba(4, 8, 22, 0.35), 0 0 16px rgba(110, 200, 242, 0.22);
  }
}

.rdev-glass.btn:active {
  transform: scale(0.96);
  transition-duration: 0.1s;
}

.rdev-glass.site-card {
  box-shadow: 0 8px 24px rgba(3, 8, 23, 0.24);
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
  transform: translateZ(0);
}

@media (hover: hover) and (pointer: fine) and (min-width: 769px),
       (hover: hover) and (pointer: fine) and (min-width: 641px) and (orientation: landscape) {
.rdev-glass.site-card:hover {
    transform: translateY(-8px) translateZ(0);
    box-shadow: 0 26px 56px rgba(4, 8, 22, 0.46), 0 10px 28px rgba(66, 129, 255, 0.22);
  }
}

.rdev-glass.site-card.pressed {
  transform: translateY(-2px) translateZ(0);
  transition-duration: 0.08s;
}

.rdev-glass.site-icon {
  border: 0 !important;
  background: transparent !important;
  -webkit-backdrop-filter: none !important;
  backdrop-filter: none !important;
  box-shadow: 0 4px 14px rgba(3, 8, 23, 0.22);
}

[data-theme="light"] .rdev-glass.site-icon {
  box-shadow: 0 4px 14px rgba(37, 50, 86, 0.12);
}

.site-icon > img,
.site-icon > svg {
  position: relative;
  z-index: 2;
  width: 100%;
  height: 100%;
  object-fit: contain;
  pointer-events: none;
}

.rdev-glass.hero-glass-card {
  box-shadow: 0 10px 28px rgba(3, 8, 23, 0.2);
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
  transform: translateZ(0);
}

/* 搜索区统一使用横屏服务卡片的折射材质，不再叠加旧边框。 */
.rdev-glass.search-box-wrapper,
.rdev-glass.engine-dropdown,
.rdev-glass.search-history-dropdown {
  border: 0 !important;
  background: transparent !important;
  box-shadow: 0 8px 24px rgba(3, 8, 23, 0.24) !important;
}

.rdev-glass.search-box-wrapper {
  -webkit-backdrop-filter: none !important;
  backdrop-filter: none !important;
}

/* 弹窗的景深模糊由外层承担，避免与内层 SVG 折射滤镜在同一层互相干扰。 */
.rdev-glass.engine-dropdown,
.rdev-glass.search-history-dropdown {
  -webkit-backdrop-filter: blur(15px) saturate(122%) !important;
  backdrop-filter: blur(15px) saturate(122%) !important;
}

/* 弹窗始终脱离文档流，避免通用 .rdev-glass 的 relative 定位顶开服务卡片。 */
.rdev-glass.engine-dropdown,
.rdev-glass.search-history-dropdown {
  position: absolute !important;
}

/* 搜索框继续由折射层承担景深，其他玻璃组件使用全局模糊参数。 */
.rdev-glass.search-box-wrapper > .rdev-glass-warp {
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.02), rgba(10, 16, 34, 0.025));
  -webkit-backdrop-filter: blur(15px) saturate(122%);
  backdrop-filter: blur(15px) saturate(122%);
}

[data-theme="light"] .rdev-glass.search-box-wrapper > .rdev-glass-warp {
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.065), rgba(210, 224, 249, 0.015));
  -webkit-backdrop-filter: blur(15px) saturate(116%);
  backdrop-filter: blur(15px) saturate(116%);
}

.rdev-glass.engine-dropdown > .rdev-glass-warp,
.rdev-glass.search-history-dropdown > .rdev-glass-warp {
  -webkit-backdrop-filter: none !important;
  backdrop-filter: none !important;
}

[data-theme="light"] .rdev-glass.engine-dropdown,
[data-theme="light"] .rdev-glass.search-history-dropdown {
  -webkit-backdrop-filter: blur(15px) saturate(116%) !important;
  backdrop-filter: blur(15px) saturate(116%) !important;
}

[data-theme="light"] .rdev-glass.search-box-wrapper,
[data-theme="light"] .rdev-glass.engine-dropdown,
[data-theme="light"] .rdev-glass.search-history-dropdown {
  box-shadow: 0 8px 24px rgba(37, 50, 86, 0.12) !important;
}

.rdev-glass.search-box-wrapper:is(:has(.search-input:focus), .is-elevated) {
  box-shadow: 0 18px 42px rgba(4, 8, 22, 0.32), 0 8px 22px rgba(66, 129, 255, 0.16) !important;
}

[data-theme="light"] .rdev-glass.search-box-wrapper:is(:has(.search-input:focus), .is-elevated) {
  box-shadow: 0 18px 42px rgba(37, 58, 111, 0.12), 0 8px 22px rgba(77, 127, 255, 0.08) !important;
}

@media (hover: hover) and (pointer: fine) and (min-width: 769px),
       (hover: hover) and (pointer: fine) and (min-width: 641px) and (orientation: landscape) {
.rdev-glass.search-box-wrapper:hover {
    box-shadow: 0 18px 42px rgba(4, 8, 22, 0.32), 0 8px 22px rgba(66, 129, 255, 0.16) !important;
  }

  [data-theme="light"] .rdev-glass.search-box-wrapper:hover {
    box-shadow: 0 18px 42px rgba(37, 58, 111, 0.12), 0 8px 22px rgba(77, 127, 255, 0.08) !important;
  }

.rdev-glass.hero-glass-card:hover {
    transform: translateY(-6px) translateZ(0);
    box-shadow: 0 26px 60px rgba(4, 8, 22, 0.36), 0 10px 28px rgba(42, 99, 190, 0.18);
  }
}

.rdev-glass.btn:focus:not(:focus-visible) {
  box-shadow: 0 4px 14px rgba(3, 8, 23, 0.18) !important;
}

@media (max-width: 640px), (orientation: portrait) and (max-width: 768px) {
  .header-bar > .rdev-glass-warp,
  .hero-glass-card > .rdev-glass-warp,
  .site-card > .rdev-glass-warp,
  .header-bar.rdev-glass::before,
  .header-bar.rdev-glass::after,
  .hero-glass-card.rdev-glass::before,
  .hero-glass-card.rdev-glass::after,
  .site-card.rdev-glass::before,
  .site-card.rdev-glass::after {
    display: none !important;
  }

  .header-bar.rdev-glass,
  .hero-glass-card.rdev-glass,
  .site-card.rdev-glass {
    overflow: visible;
    box-shadow: none !important;
    border: 0 !important;
    background: transparent !important;
  }

  /* 移动端底部 App 图标与顶部 Logo 保持独立完整的液态玻璃折射透镜与边缘高光 */
  .site-icon.rdev-glass,
  .brand-mark.rdev-glass {
    overflow: hidden !important;
  }

  .site-icon > .rdev-glass-warp,
  .brand-mark > .rdev-glass-warp,
  .site-icon.rdev-glass::before,
  .site-icon.rdev-glass::after,
  .brand-mark.rdev-glass::before,
  .brand-mark.rdev-glass::after {
    display: block !important;
  }

  .site-icon.rdev-glass {
    width: 62px !important;
    height: 62px !important;
    padding: 8px !important;
    border-radius: 18px !important;
    box-shadow: 0 4px 14px rgba(0, 0, 0, 0.22) !important;
  }

  .brand-mark,
  .brand-mark:hover,
  .brand-mark:focus {
    box-shadow: 0 4px 14px rgba(3, 8, 23, 0.18) !important;
    transform: none !important;
    outline: none !important;
    -webkit-tap-highlight-color: transparent !important;
  }

  .brand-mark:active {
    transform: scale(0.92) !important;
  }

  .rdev-glass.btn {
    border: 0 !important;
  }
}

/* ==========================================================================
   触控动效优化:竖屏(手机)下按压回弹改用无过冲的利落减速曲线。
   桌面端的 --ease-spring 带过冲回弹,配合 0.28~0.4s 时长在触屏上会显得
   发糊、玩具感;触控反馈应为快速按压(0.08~0.1s)+ 利落回弹(0.18s)。
   本块置于文件末尾并覆盖 .rdev-glass 双类特异性,确保层叠优先。
   ========================================================================== */
@media (max-width: 640px), (orientation: portrait) and (max-width: 768px) {
  .site-icon,
  .brand-mark,
  .btn-icon,
  .rdev-glass.site-icon,
  .rdev-glass.brand-mark,
  .rdev-glass.btn-icon {
    transition: transform 0.18s var(--ease-touch), box-shadow 0.18s ease;
  }
}