/* ═══════════════════════════════════════
     CSS Variables
     ═══════════════════════════════════════ */
  :root {
    --bg-img: url('https://images.unsplash.com/photo-1507525428034-b723cf961d3e?w=1920');
    --bg-opacity: 0.85;
    --overlay-opacity: 0.25;
    --blur-amount: 9px;
    
    /* Premium Glassmorphism Properties */
    --glass-opacity: 0.62;
    --glass-bg: rgba(255, 255, 255, var(--glass-opacity));
    --glass-bg-heavy: rgba(255, 255, 255, 0.55);
    --glass-bg-hover: rgba(255, 255, 255, 0.65);
    --glass-border: rgba(255, 255, 255, 0.35);
    --glass-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.06);
    
    --text: #1a1a2e;
    --text-secondary: #5a5a75;
    --text-tertiary: #8888a0;
    
    --accent: #4f6ef6;
    --accent-light: rgba(79, 110, 246, 0.1);
    --accent-glow: rgba(79, 110, 246, 0.2);
    
    --proxy-accent: #ffa801;
    --proxy-accent-light: rgba(255, 168, 1, 0.08);
    --proxy-icon-bg-hover: rgba(255, 168, 1, 0.08);
    --proxy-icon-shadow-hover: 0 0 0 2px rgba(255, 168, 1, 0.15);
    
    --surface: rgba(255, 255, 255, 0.25);
    --surface-hover: rgba(255, 255, 255, 0.6);
    --border: rgba(255, 255, 255, 0.25);
    
    --icon-bg: rgba(255, 255, 255, 0.2);
    --icon-bg-hover: rgba(79, 110, 246, 0.12);
    --icon-shadow-hover: 0 0 0 3px rgba(79, 110, 246, 0.18);
    
    --search-bg: rgba(255, 255, 255, 0.35);
    --search-focus-shadow: 0 0 12px 2px rgba(99, 102, 241, 0.22), 0 0 28px 6px rgba(99, 102, 241, 0.12), 0 0 54px 12px rgba(99, 102, 241, 0.05), inset 0 1px 1px rgba(255, 255, 255, 0.85);
    --search-width: 620px;
    --search-height: 40px;
    --search-radius: 14px;
    --glass-blur: 24px;
    --clock-font-weight: 540;

    /* 搜索框与本地书链直达下拉菜单动态联动变量体系 */
    --search-font-size: clamp(13px, calc(var(--search-height, 52px) * 0.27 + 0.5px), 17px);
    --suggest-title-size: max(11px, calc(var(--search-font-size) - 1.5px));
    --suggest-domain-size: max(9.5px, calc(var(--suggest-title-size) - 1.6px));
    --suggest-cat-size: max(9px, calc(var(--suggest-title-size) - 2px));
    --suggest-icon-size: clamp(16px, calc(var(--search-height, 52px) * 0.4), 24px);
    --suggest-item-pad-y: clamp(4px, calc(var(--search-height, 52px) * 0.12), 9px);
    
    --proxy-color: #e8840c;
    --proxy-bg: rgba(232, 132, 12, 0.15);
    --cat-header-bg: rgba(255, 255, 255, 0.35);
    --cat-header-hover: rgba(255, 255, 255, 0.55);
    
    --modal-bg: rgba(255, 255, 255, 0.45);
    --modal-overlay: rgba(31, 38, 135, 0.06);
    --input-bg: rgba(255, 255, 255, 0.2);
    --input-border: rgba(255, 255, 255, 0.3);
    
    --scrollbar-thumb: rgba(0, 0, 0, 0.15);
    --scrollbar-track: transparent;
    
    --btn-glass: rgba(255, 255, 255, 0.3);
    --btn-glass-hover: rgba(255, 255, 255, 0.5);
    
    --tag-bg: rgba(255, 255, 255, 0.2);
    --divider: rgba(255, 255, 255, 0.25);
    
    --icon-size: 40px;
    --icon-radius: 14px;
    --icon-font-size: 11px;
    --date-font-weight: 500;
    --cluster-opacity: 0.45;
    --cluster-blur: 24px;
    --cluster-cols: 8;
    --grid-col-gap: 10px;
    --grid-row-gap: 12px;
    --cluster-padding: 19px;
    --cluster-gap: 14px;
    --select-arrow: url("data:image/svg+xml;utf8,<svg fill='none' stroke='%235a5a75' stroke-width='2' stroke-linecap='round' stroke-linejoin='round' viewBox='0 0 24 24' xmlns='http://www.w3.org/2000/svg'><polyline points='6 9 12 15 18 9'></polyline></svg>");
    --clock-color: #ffffff;
    --clock-sub-color: rgba(255, 255, 255, 0.88);
    --clock-date-color: rgba(255, 255, 255, 0.88);
    --clock-shadow: 0 2px 14px rgba(0, 0, 0, 0.45);
  }

  [data-theme="dark"] {
    --bg-opacity: 1;
    --overlay-opacity: 0.52;
    --glass-opacity: 0.55;
    --glass-bg: rgba(15, 23, 42, var(--glass-opacity));
    --glass-bg-heavy: rgba(15, 23, 42, 0.85);
    --glass-bg-hover: rgba(30, 41, 59, 0.88);
    --glass-border: rgba(255, 255, 255, 0.12);
    --glass-border-strong: rgba(255, 255, 255, 0.22);
    --glass-highlight: rgba(255, 255, 255, 0.08);
    --glass-shadow: 0 24px 60px -20px rgba(0, 0, 0, 0.85), 0 4px 14px rgba(0, 0, 0, 0.5), inset 0 1px 0 var(--glass-highlight);
    
    --text: #f8fafc;
    --text-secondary: #cbd5e1;
    --text-tertiary: #94a3b8;
    
    --accent: #818cf8;
    --accent-strong: #a5b4fc;
    --accent-light: rgba(129, 140, 248, 0.16);
    --accent-glow: rgba(129, 140, 248, 0.28);
    
    --surface: rgba(15, 23, 42, 0.55);
    --surface-hover: rgba(30, 41, 59, 0.75);
    --border: rgba(255, 255, 255, 0.12);
    
    --icon-bg: rgba(255, 255, 255, 0.07);
    --icon-bg-hover: rgba(129, 140, 248, 0.18);
    --icon-shadow-hover: 0 0 0 3px rgba(129, 140, 248, 0.3);
    
    --proxy-accent: #fbbf24;
    --proxy-accent-light: rgba(251, 191, 36, 0.12);
    --proxy-icon-bg-hover: rgba(251, 191, 36, 0.12);
    --proxy-icon-shadow-hover: 0 0 0 2px rgba(251, 191, 36, 0.25);
    
    --search-bg: rgba(15, 23, 42, 0.85);
    --search-border: rgba(255, 255, 255, 0.14);
    --search-focus-shadow: 0 0 14px 2px rgba(129, 140, 248, 0.32), 0 0 32px 8px rgba(129, 140, 248, 0.18), 0 0 60px 14px rgba(99, 102, 241, 0.08), inset 0 1px 1px rgba(255, 255, 255, 0.15);
    --search-opacity: 0.85;
    
    --proxy-color: #f59e0b;
    --proxy-bg: rgba(245, 158, 11, 0.16);
    --cat-header-bg: rgba(15, 23, 42, 0.6);
    --cat-header-hover: rgba(30, 41, 59, 0.8);
    
    --modal-bg: rgba(15, 23, 42, 0.94);
    --modal-overlay: rgba(2, 6, 23, 0.65);
    --input-bg: rgba(255, 255, 255, 0.06);
    --input-border: rgba(255, 255, 255, 0.12);
    
    --scrollbar-thumb: rgba(255, 255, 255, 0.18);
    --btn-glass: rgba(255, 255, 255, 0.07);
    --btn-glass-hover: rgba(255, 255, 255, 0.14);
    
    --tag-bg: rgba(255, 255, 255, 0.08);
    --divider: rgba(255, 255, 255, 0.1);
    --select-arrow: url("data:image/svg+xml;utf8,<svg fill='none' stroke='%23cbd5e1' stroke-width='2' stroke-linecap='round' stroke-linejoin='round' viewBox='0 0 24 24' xmlns='http://www.w3.org/2000/svg'><polyline points='6 9 12 15 18 9'></polyline></svg>");
    --clock-color: #f8fafc;
    --clock-sub-color: #e2e8f0;
    --clock-date-color: #cbd5e1;
    --clock-shadow: 0 2px 16px rgba(0, 0, 0, 0.75);
  }

  /* Invert Time & Date Color Rules (Checked -> Opposite) */
  /* 浅色模式下勾选“反色”：变为深色文字（适合极亮白壁纸） */
  body.invert-clock-color {
    --clock-color: #0f172a;
    --clock-sub-color: #334155;
    --clock-date-color: #334155;
    --clock-shadow: none;
  }
  body.invert-clock-color .hero-clock-sub,
  body.invert-clock-color .hero-date {
    text-shadow: none;
  }
  body.invert-clock-color .hero-clock-sub .tz-label {
    color: #475569 !important;
  }

  /* 深色模式下勾选“反色”：变为暗调冷灰文字 */
  [data-theme="dark"] body.invert-clock-color,
  body.invert-clock-color[data-theme="dark"] {
    --clock-color: #94a3b8;
    --clock-sub-color: #64748b;
    --clock-date-color: #64748b;
    --clock-shadow: none;
  }
  [data-theme="dark"] body.invert-clock-color .hero-clock-sub,
  [data-theme="dark"] body.invert-clock-color .hero-date,
  body.invert-clock-color[data-theme="dark"] .hero-clock-sub,
  body.invert-clock-color[data-theme="dark"] .hero-date {
    text-shadow: none;
  }
  [data-theme="dark"] body.invert-clock-color .hero-clock-sub .tz-label,
  body.invert-clock-color[data-theme="dark"] .hero-clock-sub .tz-label {
    color: #64748b !important;
  }

  * { margin: 0; padding: 0; box-sizing: border-box; }

  /* ═══════════════════════════════════════
     Body & Background Layer
     ═══════════════════════════════════════ */
  html, body {
    height: 100%;
    width: 100%;
    max-width: 100vw;
    overflow-x: hidden;
    overflow-x: clip;
  }
  body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
    color: var(--text);
    line-height: 1.5;
    transition: color 0.3s;
    background: transparent;
    position: relative;
    width: 100%;
    max-width: 100vw;
  }
  body.modal-open {
    overflow: hidden !important;
  }
  [data-theme="dark"] body { background: transparent; }

  /* wallpaper layer */
  .bg-layer {
    position: fixed; inset: 0; z-index: -2;
    background-image: var(--bg-img);
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    filter: blur(var(--blur-amount));
    opacity: var(--bg-opacity, 1);
    transition: filter 0.3s ease, background-image 0.5s ease;
    width: 100%;
    max-width: 100vw;
    overflow: hidden;
  }

  /* ═══════════════════════════════════════
     Background Animated Glow Spheres
     ═══════════════════════════════════════ */
  .bg-glow-spheres {
    position: fixed;
    inset: 0;
    z-index: -1.5;
    overflow: hidden;
    width: 100%;
    max-width: 100vw;
    pointer-events: none;
    opacity: var(--bg-opacity, 1);
  }
  .sphere {
    position: absolute;
    border-radius: 50%;
    filter: blur(120px);
    opacity: 0.45;
    transition: opacity 0.5s;
    will-change: transform;
    transform: translateZ(0);
    backface-visibility: hidden;
  }
  [data-theme="dark"] .sphere {
    opacity: 0.28;
  }
  .sphere-1 {
    width: 60vw;
    height: 60vw;
    background: radial-gradient(circle, rgba(255, 147, 155, 0.7) 0%, rgba(244, 115, 223, 0) 70%);
    top: -15vw;
    left: -15vw;
    animation: float1 25s infinite alternate ease-in-out;
  }
  .sphere-2 {
    width: 70vw;
    height: 70vw;
    background: radial-gradient(circle, rgba(121, 139, 255, 0.6) 0%, rgba(131, 235, 255, 0) 70%);
    bottom: -20vw;
    right: -15vw;
    animation: float2 30s infinite alternate ease-in-out;
  }
  .sphere-3 {
    width: 50vw;
    height: 50vw;
    background: radial-gradient(circle, rgba(255, 217, 121, 0.5) 0%, rgba(255, 160, 121, 0) 70%);
    top: 25vh;
    left: 30vw;
    animation: float3 28s infinite alternate ease-in-out;
  }

  @keyframes float1 {
    0% { transform: translate(0, 0) scale(1); }
    100% { transform: translate(6vw, 5vh) scale(1.05); }
  }
  @keyframes float2 {
    0% { transform: translate(0, 0) scale(1); }
    100% { transform: translate(-8vw, -6vh) scale(1.1); }
  }
  @keyframes float3 {
    0% { transform: translate(0, 0) scale(1); }
    100% { transform: translate(-4vw, 8vh) scale(0.95); }
  }

  /* subtle tint so content stays readable over any wallpaper */
  .bg-overlay {
    position: fixed; inset: 0; z-index: -1;
    opacity: var(--overlay-opacity, 0.20);
    background: #000000;
    pointer-events: none;
  }
  [data-theme="dark"] .bg-overlay {
    background: #000000;
  }

  /* 隐藏默认滚动条但保持丝滑正常滚动 */
  html, body {
    scrollbar-width: none; /* Firefox */
    -ms-overflow-style: none; /* IE / Edge */
  }
  html::-webkit-scrollbar,
  body::-webkit-scrollbar {
    display: none;
    width: 0 !important;
    height: 0 !important;
  }

  ::-webkit-scrollbar { width: 6px; height: 6px; }
  ::-webkit-scrollbar-track { background: var(--scrollbar-track); }
  ::-webkit-scrollbar-thumb { 
    background: var(--scrollbar-thumb); 
    border-radius: 10px;
    border: 1px solid rgba(255, 255, 255, 0.1);
  }

  /* ═══════════════════════════════════════
     Page wrapper
     ═══════════════════════════════════════ */
  .page {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    width: 100%;
    max-width: 100vw;
    overflow-x: hidden;
    overflow-x: clip;
    position: relative;
    z-index: 0;
  }

  /* ═══════════════════════════════════════
     Top Bar
     ═══════════════════════════════════════ */
  .top-bar {
    display: flex; align-items: center; justify-content: space-between;
    padding: 14px 24px; position: sticky; top: 0; z-index: 100;
  }

  .top-left {
    display: flex; align-items: center; gap: 10px;
  }

  .clock-widget {
    display: flex; align-items: center; gap: 9px;
    background: var(--glass-bg); backdrop-filter: blur(24px) saturate(180%); -webkit-backdrop-filter: blur(24px) saturate(180%);
    border: 1px solid var(--glass-border); border-radius: 14px;
    padding: 7px 14px; box-shadow: var(--glass-shadow); transition: all 0.3s;
  }
  .clock-time {
    font-size: 16px; font-weight: 700; letter-spacing: 0.5px;
    font-family: "SF Mono","Cascadia Code","Consolas",monospace;
    font-variant-numeric: tabular-nums;
  }
  .clock-date { font-size: 11px; color: var(--text-secondary); line-height: 1.2; font-weight: var(--date-font-weight); }
  .greeting {
    font-size: 13px; font-weight: 600; color: var(--text-secondary);
    background: var(--glass-bg); backdrop-filter: blur(24px) saturate(180%); -webkit-backdrop-filter: blur(24px) saturate(180%);
    border: 1px solid var(--glass-border); border-radius: 14px;
    padding: 7px 16px; box-shadow: var(--glass-shadow); transition: all 0.3s;
  }

  /* 右上角按钮保持常显：仅做表面态过渡（背景/边框/阴影），不做任何位移，避免抖动 */
  .top-right {
    display: flex;
    align-items: center;
    gap: 8px;
  }
  .top-btn {
    width: 38px; height: 38px; border-radius: 12px; border: 1px solid var(--glass-border);
    background: var(--glass-bg); backdrop-filter: blur(24px) saturate(180%); -webkit-backdrop-filter: blur(24px) saturate(180%);
    cursor: pointer; font-size: 16px; color: var(--text); display: flex; align-items: center; justify-content: center;
    box-shadow: var(--glass-shadow);
    transition: background-color 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease, color 0.2s ease, transform 0.12s ease;
  }
  .top-btn:hover {
    background: var(--glass-bg-hover);
    border-color: var(--glass-border-strong);
    box-shadow: 0 8px 24px -14px rgba(43,60,96,0.30), 0 0 0 2px var(--accent-light);
  }
  [data-theme="dark"] .top-btn:hover {
    box-shadow: 0 8px 24px rgba(0,0,0,0.3), 0 0 0 2px rgba(123,147,255,0.20);
  }
  .top-btn:active { transform: scale(0.95); }

  /* ═══════════════════════════════════════
     Hero
     ═══════════════════════════════════════ */
  .hero {
    display: flex; flex-direction: column; align-items: center;
    padding: 24px 24px 36px; position: relative; z-index: 80;
  }
  .hero-clock {
    font-size: 72px; font-weight: var(--clock-font-weight, 300); letter-spacing: -1.5px; line-height: 1.1;
    font-family: "Plus Jakarta Sans", -apple-system, sans-serif;
    font-variant-numeric: tabular-nums; margin-bottom: 2px; color: var(--clock-color);
    text-shadow: var(--clock-shadow);
  }
  .hero-clock-sub {
    font-size: 18px; font-weight: 400; letter-spacing: 0.5px; line-height: 1;
    font-family: "Plus Jakarta Sans", -apple-system, sans-serif;
    font-variant-numeric: tabular-nums; color: var(--clock-sub-color);
    margin-bottom: 6px;
    text-shadow: var(--clock-shadow);
  }
  .hero-clock-sub .tz-label { font-size: 11px; font-weight: 600; margin-left: 6px; opacity: 0.8; text-transform: uppercase; color: var(--clock-sub-color); }
  .hero-date {
    font-size: 14px; color: var(--clock-date-color); margin-bottom: 36px; letter-spacing: 0.3px;
    font-weight: var(--date-font-weight);
    text-shadow: var(--clock-shadow);
  }
  .hero-clock, .hero-clock-sub, .hero-date { cursor: pointer; }

  /* 极简模式：保留时间、日期和搜索，其他内容向下滑出并淡出。 */
  .top-bar, .search-engines {
    transition: opacity 0.32s ease, transform 0.38s cubic-bezier(0.2, 0.8, 0.2, 1), visibility 0.32s;
  }
  .search-engines {
    max-height: 100px;
    overflow: hidden;
    transition: opacity 0.28s ease, transform 0.36s cubic-bezier(0.2, 0.8, 0.2, 1), max-height 0.36s ease;
  }
  .page.minimal-mode .top-bar,
  .page.minimal-mode .search-engines {
    opacity: 0;
    pointer-events: none;
    transform: translateY(42px);
  }
  .page.minimal-mode .search-engines { max-height: 0; }
  .main-content {
    visibility: visible;
  }
  .page.minimal-mode .main-content {
    pointer-events: none;
  }
  .page.minimal-mode.minimal-content-away .main-content { visibility: visible; }
  .page.minimal-mode .hero {
    position: fixed;
    inset: 0;
    z-index: 95;
    padding: 24px 20px clamp(180px, 50vh, calc(100vh - 260px));
    transform: none;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-end;
    box-sizing: border-box;
  }
  /* 极简模式下采用弹性垂直流，以搜索框底部居中（50vh）为锚点向上排列，自适应内容高度与设备尺寸 */
  .page.minimal-mode .hero-clock,
  .page.minimal-mode .hero-clock-sub,
  .page.minimal-mode .hero-date,
  .page.minimal-mode .search-wrap {
    position: static;
    left: auto;
    top: auto;
    transform: none;
    margin-left: auto;
    margin-right: auto;
  }
  .page.minimal-mode .hero-clock {
    font-size: clamp(62px, 7.2vw, 92px);
    letter-spacing: -0.045em;
    line-height: 1.02;
    margin-bottom: 14px;
    cursor: pointer;
  }
  .page.minimal-mode .hero-clock-sub {
    font-size: 13.5px;
    letter-spacing: 0.035em;
    margin-bottom: 12px;
    cursor: pointer;
  }
  .page.minimal-mode .hero-date {
    font-size: 13.5px;
    letter-spacing: 0.06em;
    margin-bottom: 32px;
    white-space: nowrap;
    cursor: pointer;
  }
  .page.minimal-mode .search-wrap {
    width: min(var(--search-width, 620px), calc(100vw - 48px));
    max-width: var(--search-width, 620px);
  }
  @media (max-width: 480px) {
    .page.minimal-mode .hero {
      padding: 20px 16px clamp(120px, 50vh, calc(100vh - 200px));
    }
    .page.minimal-mode .hero-clock {
      font-size: clamp(48px, 12vw, 64px);
      letter-spacing: -0.035em;
      margin-bottom: 10px;
    }
    .page.minimal-mode .hero-clock-sub {
      font-size: 12.5px;
      margin-bottom: 8px;
      padding: 3px 11px;
    }
    .page.minimal-mode .hero-date {
      font-size: 12.5px;
      letter-spacing: 0.04em;
      margin-bottom: 24px;
    }
    .page.minimal-mode .search-wrap {
      width: calc(100vw - 32px);
    }
  }

  .search-wrap {
    width: 100%;
    max-width: var(--search-width);
    position: relative;
    z-index: 85;
  }
  .search-wrap:focus-within {
    z-index: 100;
  }
  .search-box {
    display: flex; align-items: center;
    background: var(--search-bg);
    backdrop-filter: blur(var(--glass-blur)) saturate(180%); -webkit-backdrop-filter: blur(var(--glass-blur)) saturate(180%);
    border: 1px solid var(--search-border); border-radius: var(--search-radius);
    padding: 3px 14px 3px 16px; box-shadow: var(--glass-shadow);
    transition: border-color 0.26s ease, box-shadow 0.36s cubic-bezier(0.16, 1, 0.3, 1), background 0.22s ease;
  }
  .search-box:focus-within,
  .search-box.has-input {
    border-color: rgba(99, 102, 241, 0.4) !important;
    box-shadow: var(--search-focus-shadow) !important;
    background: var(--glass-bg-hover);
  }
  [data-theme="dark"] .search-box:focus-within,
  [data-theme="dark"] .search-box.has-input {
    border-color: rgba(165, 180, 252, 0.35) !important;
    box-shadow: var(--search-focus-shadow) !important;
  }
  .search-engine-btn {
    width: 36px; height: 36px; border-radius: 10px; border: 1px solid transparent; background: var(--icon-bg);
    cursor: pointer; font-size: 17px; display: flex; align-items: center; justify-content: center;
    transition: all 0.2s; flex-shrink: 0; color: var(--text-secondary);
  }
  .search-engine-btn:hover { background: var(--icon-bg-hover); color: var(--accent); border-color: var(--glass-border); }
  .search-input {
    flex: 1; border: none; outline: none; background: transparent; color: var(--text);
    font-size: var(--search-font-size); padding: 9px 10px; min-width: 0;
    font-weight: 500;
  }
  .search-input::placeholder { color: var(--text-tertiary); }
  .search-clear {
    width: 30px; height: 30px; border-radius: 50%; border: none; background: transparent;
    cursor: pointer; font-size: 14px; color: var(--text-tertiary); display: none;
    align-items: center; justify-content: center; flex-shrink: 0; transition: all 0.15s;
  }
  .search-clear.visible { display: flex; }
  .search-clear:hover { color: var(--text); background: var(--icon-bg); }

  .search-shortcut-badge {
    font-size: 11px; font-weight: 600; color: var(--text-tertiary);
    background: rgba(255, 255, 255, 0.25);
    border: 1px solid var(--glass-border);
    border-radius: 6px;
    padding: 2px 7px;
    margin-right: 4px;
    letter-spacing: 0.5px;
    pointer-events: none;
    transition: opacity 0.2s ease, transform 0.2s ease;
    user-select: none;
    flex-shrink: 0;
  }
  [data-theme="dark"] .search-shortcut-badge {
    background: rgba(255, 255, 255, 0.08);
  }
  .search-box:focus-within .search-shortcut-badge,
  .search-box.has-input .search-shortcut-badge {
    opacity: 0;
    transform: scale(0.9);
    display: none;
  }

  /* search engines row */
  .search-engines {
    display: flex; justify-content: center; gap: 8px; margin-top: 16px; flex-wrap: wrap;
  }
  .se-btn {
    width: 92px; justify-content: center;
    padding: 5px 0; border-radius: 10px; border: 1px solid var(--glass-border);
    background: var(--btn-glass); backdrop-filter: blur(12px) saturate(140%); -webkit-backdrop-filter: blur(12px) saturate(140%);
    cursor: pointer; font-size: 11px; color: var(--text-secondary);
    transition: all 0.2s cubic-bezier(0.2, 0.8, 0.2, 1); display: flex; align-items: center; gap: 5px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.02);
    font-weight: 600;
  }
  .se-btn:hover { color: var(--text); background: var(--btn-glass-hover); transform: translateY(-1px); }
  .se-btn.active { color: var(--accent); border-color: var(--accent); background: var(--accent-light); box-shadow: 0 0 12px var(--accent-glow); }

  .clusters-wrap {
    display: flex; gap: var(--cluster-gap, 14px);
    width: 100%; min-width: 0;
  }
  .clusters-wrap.single-column {
    flex-direction: column !important;
  }
  .clusters-wrap.single-column .cat-cluster {
    width: 100% !important;
  }
  .masonry-col {
    flex: 1 1 0;
    min-width: 0;
    display: flex; flex-direction: column; gap: var(--cluster-gap, 14px);
  }
  .cat-cluster {
    width: 100%; min-width: 0; position: relative;
    display: grid;
    column-gap: var(--grid-col-gap, 10px);
    row-gap: var(--grid-row-gap, 12px);
    padding: var(--cluster-padding, 16px);
    border-radius: var(--cluster-radius, 20px);
    border: 1px solid var(--glass-border);
    background: rgba(255, 255, 255, var(--cluster-opacity));
    backdrop-filter: blur(var(--cluster-blur)) saturate(180%);
    -webkit-backdrop-filter: blur(var(--cluster-blur)) saturate(180%);
    box-shadow: var(--glass-shadow);
    transform: translate3d(0, 0, 0);
    opacity: 1;
    will-change: transform, opacity;
    transition:
      transform 0.56s cubic-bezier(0.2, 0.8, 0.2, 1),
      opacity 0.56s cubic-bezier(0.2, 0.8, 0.2, 1),
      box-shadow 0.3s,
      border-color 0.3s;
  }
  .page.minimal-mode.minimal-content-away .cat-cluster {
    transform: translate3d(0, 112px, 0);
    opacity: 0;
  }
  .cat-cluster:hover {
    box-shadow: 0 12px 38px 0 rgba(31, 38, 135, 0.08);
  }
  [data-theme="dark"] .cat-cluster:hover {
    box-shadow: 0 12px 38px 0 rgba(0, 0, 0, 0.35);
  }
  [data-theme="dark"] .cat-cluster { background: rgba(20, 20, 32, var(--cluster-opacity)); }

  /* ═══════════════════════════════════════
     Main Content
     ═══════════════════════════════════════ */
  .main-content {
    max-width: var(--layout-max-width, 1480px); margin: 0 auto; padding: 28px 24px 100px;
    position: relative; z-index: 5;
    transition: max-width 0.25s ease;
  }

  @media (max-width: 768px) {
    .hero-clock { font-size: 48px; }
  }
  @media (max-width: 480px) {
    .hero-clock { font-size: 40px; }
    .top-left .greeting { display: none; }
  }

  /* ═══════════════════════════════════════
     Icon Item
     ═══════════════════════════════════════ */
  .icon-item {
    display: flex; flex-direction: column; align-items: center; gap: 7px;
    padding: 9px 3px 7px; border-radius: 14px;
    border: 1px solid transparent;
    cursor: grab; text-decoration: none; color: var(--text);
    transition: transform 0.25s cubic-bezier(0.2, 0.8, 0.2, 1), background 0.18s, box-shadow 0.18s, border-color 0.18s;
    position: relative; user-select: none; -webkit-user-drag: element;
  }
  .icon-item:active { cursor: grabbing; }
  .icon-item:hover {
    background: rgba(255, 255, 255, 0.25); border-color: rgba(255, 255, 255, 0.45);
    box-shadow: 0 6px 20px rgba(31, 38, 135, 0.04), inset 0 1px 1px rgba(255,255,255,0.3); transform: translateY(-2px);
  }
  [data-theme="dark"] .icon-item:hover {
    background: rgba(255, 255, 255, 0.06); border-color: rgba(255, 255, 255, 0.12);
    box-shadow: 0 6px 20px rgba(0,0,0,0.15), inset 0 1px 1px rgba(255,255,255,0.05);
  }
  .icon-item[data-proxy="1"]:hover {
    background: rgba(255, 165, 0, 0.05) !important;
  }
  [data-theme="dark"] .icon-item[data-proxy="1"]:hover {
    background: rgba(255, 175, 25, 0.06) !important;
  }
  .icon-item:active:not(.dragging) { transform: scale(0.94); }
  .icon-item.dragging {
    opacity: 0.18;
    border: 1.5px dashed var(--accent);
    background: var(--accent-light);
    box-shadow: none !important;
    transform: scale(0.90);
    pointer-events: none;
    z-index: 10;
  }
  .icon-item.dragging * {
    opacity: 0.2;
  }
  .icon-item.drag-over {
    background: var(--accent-light);
  }
  .cat-cluster.drag-active {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-glow);
  }

  /* placeholder hole when dragging — keeps grid slot size */
  .drag-placeholder {
    visibility: hidden;
    pointer-events: none;
    transition: transform 0.28s cubic-bezier(0.2, 0, 0, 1);
  }

  .icon-img-wrap {
    width: var(--icon-size); height: var(--icon-size);
    border-radius: var(--icon-radius);
    background: var(--icon-bg); display: flex; align-items: center; justify-content: center;
    flex-shrink: 0; transition: all 0.18s; position: relative; overflow: visible;
    border: 1px solid var(--glass-border);
    box-shadow: inset 0 1px 1px rgba(255,255,255,0.25);
  }
  [data-theme="dark"] .icon-img-wrap {
    box-shadow: inset 0 1px 1px rgba(255,255,255,0.06);
  }
  .icon-item:hover .icon-img-wrap {
    background: var(--icon-bg-hover); box-shadow: var(--icon-shadow-hover);
    border-color: var(--accent);
  }
  .icon-img-wrap img {
    width: calc(var(--icon-size) * 0.56); height: calc(var(--icon-size) * 0.56);
    object-fit: contain; border-radius: 3px;
    position: relative; z-index: 1;
    opacity: 0;
    transition: opacity 0.2s ease;
  }
  .icon-img-wrap img.loaded {
    opacity: 1;
  }
  .icon-fallback {
    width: calc(var(--icon-size) * 0.56); height: calc(var(--icon-size) * 0.56);
    border-radius: 8px; display: flex; align-items: center; justify-content: center;
    font-size: calc(var(--icon-size) * 0.28); font-weight: 700; color: #fff;
    position: absolute;
  }

  .icon-name {
    font-size: var(--icon-font-size, 11px); font-weight: 600; text-align: center; line-height: 1.35;
    max-width: 100%; width: 100%; overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
    color: var(--text); box-sizing: border-box; padding: 0 4px;
  }

  .proxy-dot {
    position: absolute; top: -2px; right: -2px;
    width: 10px; height: 10px; background: var(--proxy-color);
    border-radius: 50%; border: 2px solid var(--bg, #f0f2f5);
    box-shadow: 0 0 6px var(--proxy-bg);
  }

  /* add button */
  .icon-item-add {
    display: flex; flex-direction: column; align-items: center; gap: 7px;
    padding: 9px 3px 7px; border-radius: 14px;
    border: 1px solid transparent;
    cursor: pointer; text-decoration: none; transition: all 0.18s;
    position: relative; user-select: none;
  }
  .icon-item-add:hover {
    background: rgba(255, 255, 255, 0.25); border-color: rgba(255, 255, 255, 0.45);
  }
  [data-theme="dark"] .icon-item-add:hover {
    background: rgba(255, 255, 255, 0.06); border-color: rgba(255, 255, 255, 0.12);
  }
  .add-icon-wrap {
    width: var(--icon-size); height: var(--icon-size); border-radius: var(--icon-radius);
    border: 1.5px dashed var(--glass-border); display: flex; align-items: center; justify-content: center;
    flex-shrink: 0; transition: all 0.18s; color: var(--text-tertiary); font-size: 22px;
    background: rgba(255, 255, 255, 0.04);
  }
  .icon-item-add:hover .add-icon-wrap { border-color: var(--accent); color: var(--accent); background: var(--accent-light); }
  .add-icon-label { font-size: 11px; color: var(--text-tertiary); font-weight: 600; }

  /* ═══════════════════════════════════════
     Context Menu
     ═══════════════════════════════════════ */
  .context-menu {
    position: fixed; z-index: 1000;
    background: var(--modal-bg); backdrop-filter: blur(28px) saturate(180%); -webkit-backdrop-filter: blur(28px) saturate(180%);
    border: 1px solid var(--glass-border); border-radius: 11px; padding: 4px; min-width: 144px;
    box-shadow: var(--glass-shadow);
    opacity: 0; pointer-events: none; transform: scale(0.9); transition: opacity 0.15s, transform 0.15s;
  }
  .context-menu.show { opacity: 1; pointer-events: auto; transform: scale(1); }
  .cm-item {
    padding: 7px 9px; border-radius: 8px; cursor: pointer; font-size: 12px;
    display: flex; align-items: center; gap: 6px; color: var(--text); transition: all 0.12s;
    border: 1px solid transparent; background: none; width: 100%; text-align: left;
    font-weight: 500;
  }
  .cm-item:hover { background: var(--accent-light); color: var(--accent); border-color: var(--glass-border); }
  .cm-item.danger:hover { color: #e85d75; background: rgba(232,93,117,0.08); border-color: rgba(232,93,117,0.15); }
  .cm-divider { height: 1px; background: var(--divider); margin: 3px 6px; }

  /* ── Context Menu Section Control ── */
  .context-menu:not(.mode-icon) .cm-section-icon { display: none; }
  .context-menu:not(.mode-blank) .cm-section-blank { display: none; }

  /* ── Category Header & Badge System ── */
  .cat-header {
    grid-column: 1 / -1;
    display: flex !important;
    align-items: center !important;
    justify-content: space-between !important;
    width: 100% !important;
    box-sizing: border-box !important;
    padding: 2px 2px 8px 2px !important;
    margin: 0 0 6px 0 !important;
    background: transparent !important;
    border: none !important;
    border-bottom: 1px solid rgba(103, 119, 153, 0.08) !important;
    user-select: none;
    transition: border-color 0.2s ease;
  }
  [data-theme="dark"] .cat-header {
    border-bottom-color: rgba(255, 255, 255, 0.06) !important;
  }
  .cat-header-left {
    display: flex;
    align-items: center;
    gap: 9px;
    flex: 1;
    min-width: 0;
    cursor: grab;
  }
  .cat-header-left:active {
    cursor: grabbing;
  }
  .cat-icon-badge {
    width: 24px;
    height: 24px;
    border-radius: 7px;
    background: var(--accent-light, rgba(92, 115, 232, 0.1));
    border: 1px solid rgba(92, 115, 232, 0.18);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    transition: all 0.22s cubic-bezier(0.2, 0.8, 0.2, 1);
    box-shadow: 0 2px 6px rgba(92, 115, 232, 0.06);
  }
  [data-theme="dark"] .cat-icon-badge {
    background: rgba(130, 149, 243, 0.12);
    border-color: rgba(130, 149, 243, 0.22);
  }
  .cat-svg {
    width: 14px;
    height: 14px;
    stroke: var(--accent);
    color: var(--accent);
    stroke-width: 2;
    stroke-linecap: round;
    stroke-linejoin: round;
    fill: none;
    display: block;
    transition: stroke 0.2s ease, color 0.2s ease;
  }
  .cat-title {
    font-size: 13px !important;
    font-weight: 680 !important;
    letter-spacing: -0.01em !important;
    color: var(--text) !important;
    margin: 0 !important;
    line-height: 1.2 !important;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    transition: color 0.2s ease;
  }
  [data-theme="dark"] .cat-title {
    color: #edf1fa !important;
  }
  .cat-count {
    font-size: 10.5px !important;
    font-weight: 600 !important;
    color: var(--text-tertiary) !important;
    background: rgba(103, 119, 153, 0.1) !important;
    padding: 2px 7px !important;
    border-radius: 10px !important;
    line-height: 1 !important;
    flex-shrink: 0;
    margin-left: 0 !important;
    transition: all 0.2s ease;
  }
  .cat-cluster:hover .cat-count {
    background: rgba(103, 119, 153, 0.16) !important;
    color: var(--text-secondary) !important;
  }
  .cat-collapse-btn {
    background: transparent;
    border: none;
    color: var(--text-tertiary);
    cursor: pointer;
    width: 22px;
    height: 22px;
    padding: 0;
    border-radius: 6px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: transform 0.22s ease, color 0.18s ease, background 0.18s ease;
    flex-shrink: 0;
  }
  .cat-collapse-btn:hover {
    background: rgba(103, 119, 153, 0.14);
    color: var(--text);
  }
  .cat-collapse-arrow {
    width: 13px;
    height: 13px;
    transition: transform 0.24s cubic-bezier(0.2, 0.8, 0.2, 1);
  }
  .cat-cluster.collapsed .cat-collapse-arrow {
    transform: rotate(-90deg);
  }
  .cat-cluster.collapsed .icon-item,
  .cat-cluster.collapsed .empty-cat-placeholder {
    display: none !important;
  }
  .cat-cluster.collapsed {
    padding-bottom: 8px !important;
  }
  .cat-cluster.dragging-cat {
    opacity: 0.4;
    border-color: var(--accent);
    transform: scale(0.97);
    box-shadow: 0 0 0 2px var(--accent-glow), var(--glass-shadow);
  }

  /* ── Empty Category Placeholder ── */
  .empty-cat-placeholder {
    grid-column: 1 / -1;
    text-align: center;
    padding: 18px 12px;
    color: var(--text-tertiary);
    font-size: 12px;
    font-weight: 500;
    border: 1.5px dashed var(--glass-border);
    border-radius: 12px;
    margin: 4px;
    pointer-events: none;
    transition: all 0.2s;
    user-select: none;
  }
  .cat-cluster:hover .empty-cat-placeholder {
    border-color: var(--accent);
    color: var(--accent);
    background: var(--accent-light);
  }

  /* ── SVG Icons Styling ── */
  .cat-svg {
    width: 16px;
    height: 16px;
    stroke: currentColor;
    stroke-width: 2;
    fill: none;
    stroke-linecap: round;
    stroke-linejoin: round;
    display: inline-block;
    vertical-align: middle;
  }

  .cm-svg {
    width: 13px;
    height: 13px;
    stroke: currentColor;
    stroke-width: 2;
    fill: none;
    stroke-linecap: round;
    stroke-linejoin: round;
    display: inline-block;
    vertical-align: middle;
    margin-right: 5px;
  }

  .se-svg {
    width: 16px;
    height: 16px;
    stroke: currentColor;
    stroke-width: 2;
    fill: none;
    stroke-linecap: round;
    stroke-linejoin: round;
    display: block;
  }
  .top-btn .se-svg {
    margin: auto;
  }
  .se-icon-svg {
    width: 14px;
    height: 14px;
    display: inline-block;
    vertical-align: middle;
  }
  .se-icon-img {
    width: 16px;
    height: 16px;
    object-fit: contain;
    border-radius: 2px;
    display: inline-block;
    vertical-align: middle;
  }
  .search-engine-btn .se-icon-img {
    width: 18px;
    height: 18px;
    display: block;
    margin: auto;
  }

  /* ═══════════════════════════════════════
     Modal
     ═══════════════════════════════════════ */
  .modal-overlay {
    position: fixed; inset: 0; z-index: 500;
    background: var(--modal-overlay); backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px);
    display: none; align-items: center; justify-content: center;
  }
  .modal-overlay.show { display: flex; }
  .modal {
    background: var(--modal-bg); backdrop-filter: blur(30px) saturate(190%); -webkit-backdrop-filter: blur(30px) saturate(190%);
    border: 1px solid var(--glass-border); border-radius: 18px; padding: 20px;
    width: min(90%, 400px); box-shadow: var(--glass-shadow);
    animation: modalIn 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
  }
  @keyframes modalIn { from { opacity: 0; transform: translateY(16px) scale(0.95); } to { opacity: 1; transform: translateY(0) scale(1); } }
  .modal h3 { font-size: 16px; font-weight: 600; margin-bottom: 14px; color: var(--text); display: flex; align-items: center; gap: 6px; }
  .modal label { display: block; font-size: 12px; font-weight: 600; color: var(--text-secondary); margin-bottom: 5px; }
  .modal input, .modal select {
    width: 100%; padding: 8px 10px; border-radius: 9px;
    border: 1px solid var(--input-border); background: var(--input-bg);
    backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px);
    color: var(--text); font-size: 13px; outline: none; margin-bottom: 11px;
    transition: all 0.2s;
  }
  .modal input:focus, .modal select:focus { 
    border-color: var(--accent); 
    box-shadow: 0 0 0 3px var(--accent-glow), var(--glass-shadow); 
    background: rgba(255, 255, 255, 0.25);
  }
  [data-theme="dark"] .modal input:focus, [data-theme="dark"] .modal select:focus {
    background: rgba(0, 0, 0, 0.25);
  }
  .modal select { 
    cursor: pointer; 
    -webkit-appearance: none; -moz-appearance: none; appearance: none;
    background-image: var(--select-arrow);
    background-repeat: no-repeat;
    background-position: right 10px center;
    background-size: 12px;
    padding-right: 30px;
  }
  .modal-actions { display: flex; gap: 8px; justify-content: flex-end; margin-top: 4px; }
  .modal-btn {
    padding: 8px 15px; border-radius: 9px; border: 1px solid transparent; font-size: 13px; font-weight: 600;
    cursor: pointer; transition: all 0.2s;
  }
  .modal-btn-cancel { 
    background: var(--btn-glass); 
    color: var(--text-secondary); 
    border-color: var(--glass-border);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
  }
  .modal-btn-cancel:hover { 
    background: var(--btn-glass-hover); 
    color: var(--text); 
    transform: translateY(-1px);
  }
  .modal-btn-primary { 
    background: var(--accent); 
    color: #fff; 
    box-shadow: 0 4px 12px var(--accent-glow);
  }
  .modal-btn-primary:hover { 
    filter: brightness(1.1); 
    transform: translateY(-1px); 
    box-shadow: 0 6px 16px var(--accent-glow);
  }

  /* ═══════════════════════════════════════
     Settings Panel
     ═══════════════════════════════════════ */
  .settings-overlay {
    position: fixed; inset: 0; z-index: 500;
    background: var(--modal-overlay); backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px);
    display: none; align-items: center; justify-content: center;
  }
  .settings-overlay.show { display: flex; }
  .settings-panel {
    background: var(--modal-bg); backdrop-filter: blur(30px) saturate(190%); -webkit-backdrop-filter: blur(30px) saturate(190%);
    border: 1px solid var(--glass-border); border-radius: 18px; padding: 20px;
    width: min(90%, 460px); max-height: 82vh;
    display: flex; flex-direction: column; overflow: hidden;
    box-shadow: var(--glass-shadow); animation: modalIn 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
  }
  .settings-content {
    flex: 1;
    overflow-y: auto;
    margin-left: -20px;
    margin-right: -20px;
    padding-left: 20px;
    padding-right: 16px;
    overscroll-behavior: contain;
  }
  .settings-panel h3 { font-size: 16px; font-weight: 600; margin-bottom: 16px; color: var(--text); display: flex; align-items: center; gap: 6px; }
  .setting-group { margin-bottom: 15px; }
  .setting-label {
    display: flex; align-items: center; justify-content: space-between;
    font-size: 12px; font-weight: 600; color: var(--text); margin-bottom: 6px;
  }
  .setting-val { font-size: 12px; font-weight: 600; color: var(--accent); font-variant-numeric: tabular-nums; min-width: 36px; text-align: right; }

  /* ── Range Slider ── */
  .slider-row { display: flex; align-items: center; gap: 8px; }
  input[type="range"] {
    -webkit-appearance: none; appearance: none;
    flex: 1; height: 6px; border-radius: 3px;
    background: var(--border); outline: none; cursor: pointer;
    backdrop-filter: blur(5px);
  }
  input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none; appearance: none;
    width: 16px; height: 16px; border-radius: 50%;
    background: var(--accent); border: 2px solid var(--glass-border);
    box-shadow: 0 2px 8px rgba(0,0,0,0.15), var(--accent-glow); cursor: pointer;
    transition: transform 0.15s, background-color 0.15s;
  }
  input[type="range"]::-webkit-slider-thumb:hover { transform: scale(1.2); background: var(--text); }
  input[type="range"]::-moz-range-thumb {
    width: 16px; height: 16px; border-radius: 50%;
    background: var(--accent); border: 2px solid var(--glass-border);
    box-shadow: 0 2px 8px rgba(0,0,0,0.15), var(--accent-glow); cursor: pointer;
    transition: transform 0.15s;
  }
  input[type="range"]::-moz-range-thumb:hover { transform: scale(1.2); background: var(--text); }
  .slider-min, .slider-max {
    font-size: 11px; color: var(--text-tertiary); min-width: 24px; text-align: center;
    font-weight: 600;
  }

  /* wallpaper gallery */
  .wp-gallery { display: grid; grid-template-columns: repeat(6, 1fr); gap: 5px; margin-top: 4px; }
  .wp-thumb {
    aspect-ratio: 16/10; border-radius: 8px; background-size: cover; background-position: center;
    cursor: pointer; transition: all 0.2s; border: 2px solid transparent; position: relative; overflow: hidden;
    box-shadow: 0 2px 8px rgba(0,0,0,0.05);
  }
  .wp-thumb:hover { transform: scale(1.04); border-color: var(--accent); box-shadow: 0 4px 16px rgba(0,0,0,0.15); }
  .wp-thumb.active { border-color: var(--accent); }
  .wp-thumb.active::after {
    content: ''; position: absolute; top: 5px; right: 5px;
    width: 15px; height: 15px; border-radius: 50%;
    background-color: var(--accent);
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='white' stroke-width='3.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='20 6 9 17 4 12'%3E%3C/polyline%3E%3C/svg%3E");
    background-size: 9px; background-position: center; background-repeat: no-repeat;
    box-shadow: 0 2px 6px rgba(0,0,0,0.35);
  }
  .wp-upload {
    aspect-ratio: 16/10; border-radius: 8px; border: 1.5px dashed var(--glass-border);
    display: flex; align-items: center; justify-content: center; cursor: pointer;
    color: var(--text-tertiary); font-size: 20px; transition: all 0.2s;
    background: rgba(255,255,255,0.04);
  }
  .wp-upload:hover { border-color: var(--accent); color: var(--accent); background: var(--accent-light); }

  /* ═══════════════════════════════════════
     Toast
     ═══════════════════════════════════════ */
  .toast {
    position: fixed; bottom: 32px; left: 50%; transform: translateX(-50%); z-index: 2000;
    background: var(--modal-bg); backdrop-filter: blur(24px) saturate(180%); -webkit-backdrop-filter: blur(24px) saturate(180%);
    border: 1px solid var(--glass-border); border-radius: 10px;
    padding: 8px 14px; font-size: 12px; color: var(--text);
    box-shadow: var(--glass-shadow); pointer-events: none;
    opacity: 0; transform: translate(-50%, 10px); transition: opacity 0.3s, transform 0.3s;
    font-weight: 500;
  }
  .toast.show { opacity: 1; transform: translate(-50%, 0); }

  /* ═══════════════════════════════════════
     Empty
     ═══════════════════════════════════════ */
  .empty-state { text-align: center; padding: 80px 20px; color: var(--text-secondary); }
  .empty-emoji { font-size: 56px; display: block; margin-bottom: 16px; opacity: 0.6; }
  .empty-title { font-size: 18px; color: var(--text); margin-bottom: 6px; font-weight: 600; }
  .empty-sub { font-size: 14px; }

  /* ── Custom Rounded Select Element ── */
  .custom-select-wrap {
    width: 100%;
    position: relative;
  }
  .custom-select-trigger {
    width: 100%;
    box-sizing: border-box;
    padding: 6px 10px;
    border-radius: 9px;
    border: 1px solid var(--input-border);
    background: var(--input-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    color: var(--text);
    font-size: 12px;
    outline: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: space-between;
    transition: all 0.18s cubic-bezier(0.16, 1, 0.3, 1);
    user-select: none;
  }
  .custom-select-trigger:hover {
    border-color: var(--accent);
    background: rgba(255, 255, 255, 0.4);
  }
  [data-theme="dark"] .custom-select-trigger:hover {
    background: rgba(255, 255, 255, 0.1);
  }
  .custom-select-trigger.active {
    border-color: var(--accent);
    box-shadow: 0 0 0 2px var(--accent-glow), var(--glass-shadow);
    background: var(--glass-bg-heavy);
  }
  .custom-select-arrow {
    width: 12px;
    height: 12px;
    background-image: var(--select-arrow);
    background-repeat: no-repeat;
    background-position: center;
    background-size: contain;
    transition: transform 0.22s cubic-bezier(0.34, 1.56, 0.64, 1);
    opacity: 0.7;
    flex-shrink: 0;
    margin-left: 6px;
  }
  .custom-select-trigger.active .custom-select-arrow {
    transform: rotate(180deg);
    opacity: 1;
  }
  .custom-select-text {
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 500;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    min-width: 0;
  }
  .custom-select-trigger-icon {
    display: flex;
    align-items: center;
    color: var(--accent);
    flex-shrink: 0;
  }
  .custom-select-trigger-icon svg {
    width: 15px;
    height: 15px;
  }
  .custom-select-dropdown {
    position: fixed;
    z-index: 3000;
    background: var(--modal-bg);
    backdrop-filter: blur(28px) saturate(190%);
    -webkit-backdrop-filter: blur(28px) saturate(190%);
    border: 1px solid var(--glass-border-strong);
    border-radius: 12px !important;
    max-height: 220px;
    overflow-y: auto;
    overscroll-behavior: contain;
    box-shadow: 0 16px 36px -6px rgba(24, 32, 60, 0.22), 0 4px 14px rgba(24, 32, 60, 0.08), inset 0 1px 0 rgba(255, 255, 255, 0.4);
    opacity: 0;
    transform: translateY(-4px) scale(0.98);
    pointer-events: none;
    transition: opacity 0.18s cubic-bezier(0.16, 1, 0.3, 1), transform 0.18s cubic-bezier(0.16, 1, 0.3, 1);
    padding: 5px;
    box-sizing: border-box;
  }
  [data-theme="dark"] .custom-select-dropdown {
    box-shadow: 0 16px 36px -6px rgba(0, 0, 0, 0.65), 0 4px 14px rgba(0, 0, 0, 0.4), inset 0 1px 0 rgba(255, 255, 255, 0.08);
  }
  .custom-select-dropdown.show {
    opacity: 1;
    transform: translateY(0) scale(1);
    pointer-events: auto;
  }
  .custom-select-dropdown::-webkit-scrollbar {
    width: 4px;
  }
  .custom-select-dropdown::-webkit-scrollbar-thumb {
    background: var(--scrollbar-thumb);
    border-radius: 4px;
  }
  .custom-select-dropdown::-webkit-scrollbar-track {
    background: transparent;
  }
  .custom-select-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
    padding: 6px 10px;
    cursor: pointer;
    text-decoration: none;
    color: var(--text);
    transition: all 0.12s ease;
    border-radius: 8px !important;
    border: 1px solid transparent;
    margin-bottom: 2px;
    font-size: 11.5px;
    font-weight: 500;
    user-select: none;
  }
  .custom-select-item:last-child {
    margin-bottom: 0;
  }
  .custom-select-item:hover {
    background: var(--accent-light);
    color: var(--accent-strong);
  }
  .custom-select-item.selected {
    background: var(--accent-light);
    color: var(--accent-strong);
    font-weight: 600;
    border-color: var(--accent-glow);
  }
  .custom-select-item.selected::after {
    content: '';
    display: inline-block;
    width: 5px;
    height: 5px;
    border-radius: 50%;
    background: var(--accent);
    box-shadow: 0 0 6px var(--accent);
    margin-left: 6px;
    flex-shrink: 0;
  }
  .custom-select-item-icon {
    display: flex;
    align-items: center;
    color: var(--text-secondary);
    flex-shrink: 0;
  }
  .custom-select-item-icon svg {
    width: 15px;
    height: 15px;
  }
  .custom-select-item.selected .custom-select-item-icon {
    color: var(--accent);
  }
  /* Refined surface treatment: thin optical edges, quieter elevation and consistent radii. */
  :root {
    --glass-border: rgba(255, 255, 255, 0.28);
    --glass-border-strong: rgba(255, 255, 255, 0.48);
    --glass-shadow: 0 10px 30px -14px rgba(31, 38, 135, 0.20), 0 1px 2px rgba(31, 38, 135, 0.025);
    --search-border: rgba(255, 255, 255, 0.32);
    --search-focus-shadow: 0 0 0 3px rgba(79, 110, 246, 0.13), 0 12px 32px -20px rgba(79, 110, 246, 0.45);
    --icon-shadow-hover: 0 0 0 2px rgba(79, 110, 246, 0.16);
  }
  [data-theme="dark"] {
    --glass-border: rgba(255, 255, 255, 0.07);
    --glass-border-strong: rgba(255, 255, 255, 0.13);
    --glass-shadow: 0 10px 30px -14px rgba(0, 0, 0, 0.55), 0 1px 2px rgba(0, 0, 0, 0.18);
    --search-border: rgba(255, 255, 255, 0.07);
    --search-focus-shadow: 0 0 0 3px rgba(123, 147, 255, 0.22), 0 12px 32px -20px rgba(0, 0, 0, 0.7);
    --icon-shadow-hover: 0 0 0 2px rgba(123, 147, 255, 0.20);
  }

  .search-box { padding: 4px 12px 4px 8px; }
  .search-engine-btn { width: 34px; height: 34px; border-radius: 9px; }
  .search-engine-btn:hover {
    border-color: var(--glass-border-strong);
    box-shadow: inset 0 1px 0 rgba(255,255,255,0.32);
  }
  .search-input { padding: 9px 11px; }

  /* Search engines use a surface-state hover with no positional movement. */
  .se-btn {
    padding: 6px 0;
    border-radius: 9px;
    transition: color 0.18s ease, background 0.18s ease, border-color 0.18s ease, box-shadow 0.18s ease;
    box-shadow: 0 3px 12px -10px rgba(0,0,0,0.22);
  }
  .se-btn:hover {
    color: var(--text);
    background: var(--btn-glass-hover);
    border-color: var(--glass-border-strong);
    box-shadow: 0 5px 14px -11px rgba(31, 38, 135, 0.32), inset 0 1px 0 rgba(255,255,255,0.35);
    transform: none;
  }
  .se-btn.active {
    border-color: var(--accent);
    box-shadow: 0 0 0 1px var(--accent-glow), inset 0 1px 0 rgba(255,255,255,0.28);
  }

  .cat-cluster:hover {
    border-color: var(--glass-border-strong);
    box-shadow: 0 16px 36px -22px rgba(31, 38, 135, 0.42), 0 1px 2px rgba(31, 38, 135, 0.03);
  }
  [data-theme="dark"] .cat-cluster:hover { box-shadow: 0 16px 36px -22px rgba(0, 0, 0, 0.72), 0 1px 2px rgba(0, 0, 0, 0.22); }
  .icon-item, .icon-item-add { border-radius: 12px; }
  .icon-item:hover {
    background: rgba(255, 255, 255, 0.22);
    border-color: var(--glass-border-strong);
    box-shadow: 0 8px 20px -16px rgba(31, 38, 135, 0.32), inset 0 1px 0 rgba(255,255,255,0.28);
    transform: translateY(-1px);
  }
  [data-theme="dark"] .icon-item:hover { box-shadow: 0 8px 20px -16px rgba(0,0,0,0.62), inset 0 1px 0 rgba(255,255,255,0.05); }

  /* ═══════════════════════════════════════
     Light Glass UI — unified optical system
     ═══════════════════════════════════════ */
  :root {
    --page-bg: #f5f7fb;
    --glass-opacity: 0.75;
    --glass-bg: rgba(255, 255, 255, var(--glass-opacity));
    --glass-bg-heavy: rgba(255, 255, 255, 0.90);
    --glass-bg-hover: rgba(255, 255, 255, 0.96);
    --glass-border: rgba(100, 116, 145, 0.18);
    --glass-border-strong: rgba(79, 99, 138, 0.32);
    --glass-highlight: rgba(255, 255, 255, 0.92);
    --glass-shadow: 0 16px 45px -28px rgba(30, 45, 80, 0.28), 0 2px 8px -4px rgba(30, 45, 80, 0.12), inset 0 1px 0 var(--glass-highlight);
    --text: #0f172a;
    --text-secondary: #334155;
    --text-tertiary: #64748b;
    --accent: #4f46e5;
    --accent-strong: #4338ca;
    --accent-light: rgba(79, 70, 229, 0.09);
    --accent-glow: rgba(79, 70, 229, 0.18);
    --surface: rgba(255, 255, 255, 0.55);
    --surface-hover: rgba(255, 255, 255, 0.88);
    --border: rgba(100, 116, 145, 0.18);
    --icon-bg: rgba(255, 255, 255, 0.75);
    --icon-bg-hover: rgba(238, 242, 255, 0.96);
    --icon-shadow-hover: 0 0 0 2px rgba(79, 70, 229, 0.15), 0 10px 22px -14px rgba(45, 60, 110, 0.45);
    --search-height: 52px;
    --clock-font-weight: 340;
    --search-bg: rgba(255, 255, 255, 0.82);
    --search-border: rgba(100, 116, 145, 0.22);
    --search-focus-shadow: 0 0 0 4px rgba(79, 70, 229, 0.14), 0 20px 40px -24px rgba(45, 60, 110, 0.45);
    --modal-bg: rgba(255, 255, 255, 0.92);
    --modal-overlay: rgba(15, 23, 42, 0.35);
    --input-bg: rgba(255, 255, 255, 0.85);
    --input-border: rgba(100, 116, 145, 0.24);
    --btn-glass: rgba(255, 255, 255, 0.65);
    --btn-glass-hover: rgba(255, 255, 255, 0.96);
    --divider: rgba(100, 116, 145, 0.15);
    --scrollbar-thumb: rgba(91, 105, 133, 0.28);
    --proxy-color: #d97706;
    --proxy-bg: rgba(217, 119, 6, 0.14);
    --clock-color: #ffffff;
    --clock-sub-color: rgba(255, 255, 255, 0.95);
    --clock-date-color: rgba(255, 255, 255, 0.95);
    --clock-shadow: 0 2px 16px rgba(0, 0, 0, 0.55), 0 1px 4px rgba(0, 0, 0, 0.35);
  }

  html {
    background: var(--page-bg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
  }
  body {
    min-width: 0;
    overflow-x: hidden;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI Variable", "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    letter-spacing: -0.01em;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
  }
  .page { min-width: 0; }
  .bg-layer { opacity: var(--bg-opacity, 0.85); transition: opacity 0.5s ease; }
  .bg-glow-spheres { opacity: var(--bg-opacity, 0.85); transition: opacity 0.5s ease; }
  .sphere { filter: blur(150px); animation: none; }
  .sphere-1 { background: rgba(255, 210, 219, 0.54); }
  .sphere-2 { background: rgba(199, 218, 255, 0.58); }
  .sphere-3 { background: rgba(255, 240, 205, 0.38); }
  .bg-overlay { background: rgba(247, 249, 253, 0.22); transition: background 0.4s ease; }

  /* ── Top Bar & Site Brand ── */
  .top-bar {
    padding: 18px 26px;
    display: flex;
    align-items: center;
    justify-content: space-between;
  }
  .top-left { min-width: 0; display: flex; align-items: center; }
  .site-brand {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    min-height: 38px;
    padding: 4px 13px 4px 6px;
    border: 1px solid var(--glass-border);
    border-radius: 999px;
    background: var(--glass-bg);
    box-shadow: var(--glass-shadow);
    backdrop-filter: blur(24px) saturate(150%);
    -webkit-backdrop-filter: blur(24px) saturate(150%);
    transition: all 0.28s cubic-bezier(0.16, 1, 0.3, 1);
    user-select: none;
    text-decoration: none;
  }
  .site-brand:hover {
    border-color: var(--glass-border-strong);
    background: var(--glass-bg-hover);
    transform: translateY(-1px);
    box-shadow: 0 12px 28px -16px rgba(43, 60, 96, 0.28), inset 0 1px 0 var(--glass-highlight);
  }
  .site-logo {
    width: 26px;
    height: 26px;
    border-radius: 50%;
    display: block;
    object-fit: cover;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.12);
  }
  .site-name {
    font-size: 13px;
    font-weight: 700;
    letter-spacing: -0.01em;
    color: var(--text);
  }
  .greeting-badge {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    font-size: 11px;
    font-weight: 600;
    color: var(--accent-strong);
    background: var(--accent-light);
    padding: 2.5px 9px 2.5px 7px;
    border-radius: 999px;
    letter-spacing: 0.02em;
    border: 1px solid rgba(92, 115, 232, 0.16);
    line-height: 1.35;
    transition: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease;
  }
  .greeting-icon {
    display: inline-flex;
    align-items: center;
  }
  .greeting-icon svg {
    width: 12.5px;
    height: 12.5px;
    display: block;
    fill: none;
    stroke: currentColor;
    stroke-width: 2.1;
    stroke-linecap: round;
    stroke-linejoin: round;
  }
  /* 时段配色：白昼暖金 / 晨昏暖橙 / 夜晚靛蓝 */
  .greeting-badge.t-day {
    color: #b45309;
    background: rgba(251, 191, 36, 0.15);
    border-color: rgba(245, 158, 11, 0.30);
  }
  .greeting-badge.t-dusk {
    color: #c2410c;
    background: rgba(251, 146, 60, 0.14);
    border-color: rgba(234, 88, 12, 0.28);
  }
  .greeting-badge.t-night {
    color: #4f46e5;
    background: rgba(99, 102, 241, 0.11);
    border-color: rgba(99, 102, 241, 0.28);
  }
  .top-right {
    display: flex;
    align-items: center;
    gap: 8px;
  }
  .top-btn {
    width: 38px;
    height: 38px;
    border-radius: 12px;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    box-shadow: var(--glass-shadow);
    color: var(--text-secondary);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    backdrop-filter: blur(20px) saturate(140%);
    -webkit-backdrop-filter: blur(20px) saturate(140%);
    transition: background-color 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease, color 0.2s ease, transform 0.12s ease;
  }
  .top-btn:hover {
    color: var(--accent-strong);
    background: var(--glass-bg-hover);
    border-color: var(--glass-border-strong);
    box-shadow: 0 10px 24px -14px rgba(43, 60, 96, 0.32), inset 0 1px 0 var(--glass-highlight), 0 0 0 2px var(--accent-light);
  }
  .top-btn:active {
    transform: scale(0.95);
  }
  .top-btn svg, .top-btn-svg {
    width: 17px;
    height: 17px;
    stroke: currentColor;
    stroke-width: 2;
  }

  /* ── Hero & Anti-Jitter Clock ── */
  .hero {
    padding: 14px 24px 34px;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
  }
  .hero-clock {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI Variable", "Segoe UI", sans-serif;
    font-size: clamp(54px, 5.8vw, 76px);
    font-weight: var(--clock-font-weight, 320);
    letter-spacing: -0.04em;
    color: var(--clock-color);
    text-shadow: var(--clock-shadow);
    margin-bottom: 5px;
    font-variant-numeric: tabular-nums;
    font-feature-settings: "tnum";
    line-height: 1.05;
    user-select: none;
    transition: color 0.3s ease;
  }
  .hero-clock-sub {
    font-family: inherit;
    color: var(--clock-sub-color);
    font-size: 13.5px;
    font-weight: 550;
    letter-spacing: 0.02em;
    margin-bottom: 6px;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 4px 14px;
    border-radius: 999px;
    background: rgba(0, 0, 0, 0.16);
    border: 1px solid rgba(255, 255, 255, 0.35);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: 0 4px 14px rgba(0, 0, 0, 0.16);
    text-shadow: 0 1px 4px rgba(0, 0, 0, 0.4);
  }
  .hero-clock-sub .tz-label {
    color: var(--clock-sub-color);
    font-weight: 650;
    opacity: 0.95;
  }
  .hero-date {
    color: var(--clock-date-color);
    font-size: 13px;
    font-weight: 550;
    margin-bottom: 30px;
    letter-spacing: 0.02em;
    opacity: 0.96;
    user-select: none;
    text-shadow: 0 1px 6px rgba(0, 0, 0, 0.45);
  }

  /* ── Search Bar & Realtime Suggest ── */
  .search-wrap {
    position: relative;
    width: min(100%, var(--search-width, 620px));
    margin: 0 auto;
    z-index: 60;
  }
  .search-box {
    min-height: var(--search-height, 52px);
    height: var(--search-height, 52px);
    padding: 4px 10px 4px 8px;
    background: var(--search-bg);
    border: 1px solid var(--search-border);
    border-radius: var(--search-radius, 16px);
    box-shadow: var(--glass-shadow);
    backdrop-filter: blur(28px) saturate(160%);
    -webkit-backdrop-filter: blur(28px) saturate(160%);
    display: flex;
    align-items: center;
    transition: all 0.26s cubic-bezier(0.16, 1, 0.3, 1);
  }
  .search-engine-btn {
    width: calc(var(--search-height, 52px) - 14px);
    height: calc(var(--search-height, 52px) - 14px);
    border-radius: 11px;
    background: rgba(244, 247, 252, 0.85);
    border: 1px solid var(--glass-border);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.2s ease;
    flex-shrink: 0;
  }
  .search-engine-btn:hover {
    background: #ffffff;
    transform: scale(1.04);
  }
  .search-input {
    flex: 1;
    min-width: 0;
    height: 100%;
    padding: 0 12px;
    font-size: var(--search-font-size);
    font-weight: 500;
    color: var(--text);
    background: transparent;
    border: none;
    outline: none;
    letter-spacing: 0;
  }
  .search-input::placeholder {
    color: var(--text-tertiary);
    font-weight: 450;
  }
  .search-shortcut-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    font-size: 11px;
    font-weight: 600;
    padding: 2px 7px;
    border-radius: 6px;
    background: rgba(0, 0, 0, 0.05);
    color: var(--text-tertiary);
    border: 1px solid rgba(0, 0, 0, 0.08);
    box-shadow: 0 1px 1px rgba(0, 0, 0, 0.04);
    letter-spacing: 0.03em;
    user-select: none;
    pointer-events: none;
    transition: all 0.2s;
  }
  .search-box:focus-within .search-shortcut-badge {
    opacity: 0;
    pointer-events: none;
  }
  .search-clear {
    width: 28px;
    height: 28px;
    border-radius: 8px;
    border: none;
    background: transparent;
    color: var(--text-tertiary);
    display: none;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.18s;
  }
  .search-clear.visible { display: flex; }
  .search-clear:hover {
    color: var(--text);
    background: rgba(0, 0, 0, 0.06);
  }
  .search-engines {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
    gap: 7px;
    margin-top: 13px;
  }
  .se-btn {
    width: auto;
    min-width: 76px;
    height: 31px;
    padding: 0 11px;
    border-radius: 10px;
    background: rgba(255, 255, 255, 0.44);
    border: 1px solid rgba(103, 119, 153, 0.12);
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.66);
    font-size: 11px;
    font-weight: 600;
    color: var(--text-secondary);
    display: inline-flex;
    align-items: center;
    gap: 5px;
    cursor: pointer;
    transition: all 0.22s cubic-bezier(0.16, 1, 0.3, 1);
  }
  .se-btn:hover {
    background: rgba(255, 255, 255, 0.82);
    border-color: var(--glass-border-strong);
    color: var(--text);
    transform: translateY(-1px);
  }
  .se-btn.active {
    color: var(--accent-strong);
    background: rgba(239, 242, 255, 0.92);
    border-color: rgba(92, 115, 232, 0.35);
    box-shadow: 0 6px 18px -12px rgba(70, 95, 214, 0.6), inset 0 1px 0 #fff;
  }

  /* 当本地直达下拉菜单开启时，自动淡出让位搜索引擎按钮，保持极致纯净 */
  .search-wrap.has-suggest ~ .search-engines {
    opacity: 0;
    pointer-events: none;
    transform: translateY(8px);
    transition: opacity 0.2s ease, transform 0.2s ease;
  }

  /* ── Search Suggestion Dropdown (Minimalist Frosted Glass) ── */
  .search-suggest {
    position: absolute;
    top: calc(100% + 8px);
    left: 0;
    right: 0;
    border-radius: 14px;
    background: rgba(255, 255, 255, 0.72);
    border: 1px solid rgba(255, 255, 255, 0.65);
    box-shadow: 0 20px 48px -10px rgba(15, 23, 42, 0.16), 0 4px 16px -2px rgba(15, 23, 42, 0.06), inset 0 1px 0 rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(32px) saturate(190%);
    -webkit-backdrop-filter: blur(32px) saturate(190%);
    padding: 6px;
    z-index: 999;
    max-height: 340px;
    overflow-y: auto;
    overscroll-behavior: contain;
    animation: suggestFadeIn 0.18s cubic-bezier(0.16, 1, 0.3, 1);
  }
  [data-theme="dark"] .search-suggest {
    background: rgba(15, 23, 42, 0.78);
    border: 1px solid rgba(255, 255, 255, 0.14);
    box-shadow: 0 24px 56px -10px rgba(0, 0, 0, 0.75), 0 4px 16px -2px rgba(0, 0, 0, 0.4), inset 0 1px 0 rgba(255, 255, 255, 0.1);
  }
  .search-suggest::-webkit-scrollbar {
    width: 4px;
  }
  .search-suggest::-webkit-scrollbar-thumb {
    background: rgba(148, 163, 184, 0.3);
    border-radius: 4px;
  }
  @keyframes suggestFadeIn {
    from { opacity: 0; transform: translateY(-5px) scale(0.988); }
    to { opacity: 1; transform: translateY(0) scale(1); }
  }
  .suggest-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: calc(var(--suggest-item-pad-y) * 0.7) 8px 3px;
    font-size: calc(var(--suggest-domain-size) - 0.5px);
    font-weight: 600;
    color: var(--text-tertiary);
    letter-spacing: 0.04em;
    user-select: none;
  }
  .suggest-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: var(--suggest-item-pad-y) 8px;
    border-radius: 8px;
    text-decoration: none;
    color: var(--text);
    cursor: pointer;
    transition: all 0.14s ease;
    min-height: calc(var(--suggest-icon-size) + var(--suggest-item-pad-y) * 1.6);
    box-sizing: border-box;
  }
  .suggest-item:hover,
  .suggest-item.selected {
    background: rgba(92, 115, 232, 0.11);
    color: var(--accent-strong);
  }
  [data-theme="dark"] .suggest-item:hover,
  [data-theme="dark"] .suggest-item.selected {
    background: rgba(129, 140, 248, 0.14);
  }
  .suggest-icon {
    width: var(--suggest-icon-size);
    height: var(--suggest-icon-size);
    border-radius: max(4px, calc(var(--suggest-icon-size) * 0.25));
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--icon-bg);
    overflow: hidden;
  }
  .suggest-icon img {
    width: 100%;
    height: 100%;
    object-fit: cover;
  }
  .suggest-fallback {
    width: 100%;
    height: 100%;
    color: #fff;
    font-size: calc(var(--suggest-icon-size) * 0.46);
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
  }
  .suggest-info {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
    gap: 0;
    text-align: left;
  }
  .suggest-title {
    font-size: var(--suggest-title-size);
    font-weight: 600;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    line-height: 1.25;
    letter-spacing: -0.01em;
  }
  .suggest-title mark {
    background: transparent;
    color: var(--accent-strong);
    font-weight: 750;
    text-decoration: underline;
    text-underline-offset: 2px;
  }
  .suggest-domain {
    font-size: var(--suggest-domain-size);
    color: var(--text-tertiary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    line-height: 1.2;
    opacity: 0.72;
  }
  .suggest-meta {
    display: flex;
    align-items: center;
    gap: 5px;
    flex-shrink: 0;
  }
  .suggest-cat {
    font-size: var(--suggest-cat-size);
    font-weight: 600;
    color: var(--text-secondary);
    background: rgba(0, 0, 0, 0.04);
    padding: 1.5px 5.5px;
    border-radius: 4px;
    letter-spacing: 0.02em;
  }
  [data-theme="dark"] .suggest-cat {
    background: rgba(255, 255, 255, 0.06);
    color: var(--text-tertiary);
  }
  .suggest-key {
    font-size: var(--suggest-domain-size);
    font-weight: 650;
    color: var(--accent-strong);
    opacity: 0;
    transform: translateX(-3px);
    transition: all 0.14s ease;
  }
  .suggest-item.selected .suggest-key,
  .suggest-item:hover .suggest-key {
    opacity: 1;
    transform: translateX(0);
  }

  /* ── Main Content & Clusters ── */
  .main-content {
    width: 100%;
    min-width: 0;
    max-width: var(--layout-max-width, 1480px);
    margin: 0 auto;
    padding: 26px 24px 88px;
    transition: max-width 0.25s ease;
  }
  .clusters-wrap {
    width: 100%;
    min-width: 0;
    gap: var(--cluster-gap, 14px);
  }
  .clusters-wrap.single-column { flex-direction: column !important; }
  .clusters-wrap.single-column .cat-cluster { width: 100% !important; }
  .masonry-col { min-width: 0; gap: var(--cluster-gap, 14px); }
  .cat-cluster {
    position: relative;
    padding: var(--cluster-padding, 18px);
    border-radius: var(--cluster-radius, 20px);
    column-gap: var(--grid-col-gap, 10px);
    row-gap: var(--grid-row-gap, 12px);
    background: rgba(255, 255, 255, var(--cluster-opacity, 0.45));
    border: 1px solid var(--glass-border);
    backdrop-filter: blur(var(--cluster-blur, 24px)) saturate(150%);
    -webkit-backdrop-filter: blur(var(--cluster-blur, 24px)) saturate(150%);
    box-shadow: var(--glass-shadow);
    transition: border-color 0.28s, box-shadow 0.28s, transform 0.28s cubic-bezier(0.16, 1, 0.3, 1);
  }
  .cat-cluster.grid-fixed {
    grid-template-columns: repeat(var(--cluster-cols, 8), minmax(0, 1fr)) !important;
  }
  .cat-cluster.grid-fluid {
    grid-template-columns: repeat(auto-fill, minmax(calc(var(--icon-size, 54px) + 24px), 1fr)) !important;
  }
  .cat-cluster:hover {
    border-color: var(--glass-border-strong);
    box-shadow: 0 20px 48px -24px rgba(43, 60, 96, 0.28), inset 0 1px 0 var(--glass-highlight);
  }
  .cat-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 12px;
    padding-bottom: 8px;
    border-bottom: 1px solid var(--divider);
    user-select: none;
  }
  .cat-header-left {
    display: flex;
    align-items: center;
    gap: 8px;
  }
  .cat-icon-badge {
    width: 24px;
    height: 24px;
    border-radius: 8px;
    background: var(--accent-light);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent-strong);
  }
  .cat-icon-badge svg {
    width: 14px;
    height: 14px;
  }
  .cat-title {
    font-size: 13px;
    font-weight: 700;
    color: var(--text);
    letter-spacing: -0.01em;
  }
  .cat-count {
    font-size: 11px;
    font-weight: 650;
    color: var(--text-tertiary);
    background: rgba(0, 0, 0, 0.04);
    padding: 1px 6px;
    border-radius: 999px;
    line-height: 1.3;
  }
  .cat-collapse-btn {
    width: 26px;
    height: 26px;
    border-radius: 8px;
    background: transparent;
    border: none;
    color: var(--text-tertiary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
  }
  .cat-collapse-btn:hover {
    color: var(--accent-strong);
    background: var(--accent-light);
  }
  .cat-collapse-arrow {
    width: 13px;
    height: 13px;
    transition: transform 0.28s cubic-bezier(0.16, 1, 0.3, 1);
  }
  .cat-cluster.collapsed .cat-collapse-arrow {
    transform: rotate(-90deg);
  }
  .cat-cluster.collapsed .icon-item,
  .cat-cluster.collapsed .empty-cat-placeholder {
    display: none !important;
  }

  /* ── Settings Panel & Modals ── */
  .context-menu, .modal, .settings-panel, .custom-select-dropdown, .toast {
    border: 1px solid var(--glass-border);
    background: var(--modal-bg);
    box-shadow: 0 28px 70px -30px rgba(26, 38, 70, 0.45), 0 8px 24px -12px rgba(26, 38, 70, 0.2), inset 0 1px 0 var(--glass-highlight);
    backdrop-filter: blur(32px) saturate(160%);
    -webkit-backdrop-filter: blur(32px) saturate(160%);
  }
  .context-menu {
    border-radius: 14px;
    padding: 6px;
    animation: menuPop 0.18s cubic-bezier(0.16, 1, 0.3, 1);
  }
  @keyframes menuPop {
    from { opacity: 0; transform: scale(0.95); }
    to { opacity: 1; transform: scale(1); }
  }
  .cm-item {
    min-height: 34px;
    border-radius: 9px;
    color: var(--text);
    font-size: 12.5px;
    font-weight: 550;
    transition: all 0.16s ease;
  }
  .cm-item:hover {
    background: var(--accent-light);
    color: var(--accent-strong);
  }
  .cm-item.danger:hover {
    background: rgba(239, 68, 68, 0.12);
    color: #ef4444;
  }
  .modal-overlay {
    background: rgba(15, 23, 42, 0.28);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    animation: overlayFade 0.24s cubic-bezier(0.16, 1, 0.3, 1);
  }
  .settings-overlay {
    background: rgba(15, 23, 42, 0.32);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    animation: overlayFade 0.24s cubic-bezier(0.16, 1, 0.3, 1);
  }
  @keyframes overlayFade {
    from { opacity: 0; }
    to { opacity: 1; }
  }
  .modal, .settings-panel {
    border-radius: 24px;
    padding: 24px;
    animation: panelPop 0.26s cubic-bezier(0.16, 1, 0.3, 1);
  }
  @keyframes panelPop {
    from { opacity: 0; transform: translateY(12px) scale(0.97); }
    to { opacity: 1; transform: translateY(0) scale(1); }
  }
  .modal h3, .settings-panel h3 {
    font-size: 17px;
    font-weight: 750;
    letter-spacing: -0.02em;
    color: var(--text);
  }
  .modal label {
    color: var(--text-secondary);
    font-weight: 600;
    font-size: 12px;
  }
  .modal input, .modal select, .custom-select-trigger {
    min-height: 40px;
    border-radius: 11px;
    background: rgba(255, 255, 255, 0.68);
    border: 1px solid var(--input-border);
    color: var(--text);
    font-size: 13px;
    transition: all 0.2s ease;
  }
  .modal input:focus, .modal select:focus {
    background: #fff;
    border-color: var(--accent);
    box-shadow: 0 0 0 4px var(--accent-light);
  }
  .modal-btn {
    min-height: 36px;
    padding: 8px 18px;
    border-radius: 11px;
    font-weight: 600;
    font-size: 12px;
    cursor: pointer;
    transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  }
  .modal-btn-cancel {
    background: rgba(255, 255, 255, 0.58);
    border: 1px solid var(--glass-border);
    color: var(--text-secondary);
  }
  .modal-btn-cancel:hover {
    background: #ffffff;
    color: var(--text);
  }
  .modal-btn-primary {
    background: var(--accent);
    color: #fff;
    border: none;
    box-shadow: 0 8px 20px -8px var(--accent);
  }
  .modal-btn-primary:hover {
    background: var(--accent-strong);
    transform: translateY(-1px);
    box-shadow: 0 12px 24px -8px var(--accent);
  }
  .settings-panel {
    width: min(94%, 820px);
    max-height: 88vh;
    padding: 20px 24px 18px;
  }
  .settings-content {
    margin-left: -20px;
    margin-right: -20px;
    padding-left: 20px;
    padding-right: 16px;
  }
  .settings-grid-layout {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 16px;
    align-items: start;
  }
  .settings-col {
    display: flex;
    flex-direction: column;
    gap: 2px;
    min-width: 0;
  }
  .setting-group {
    padding: 7px 11px;
    margin-bottom: 5px;
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.36);
    backdrop-filter: blur(16px);
    transition: all 0.2s ease;
  }
  .setting-group:hover {
    background: rgba(255, 255, 255, 0.52);
    border-color: var(--glass-border-strong);
  }
  [data-theme="dark"] .setting-group {
    background: rgba(255, 255, 255, 0.035);
  }
  [data-theme="dark"] .setting-group:hover {
    background: rgba(255, 255, 255, 0.06);
  }
  .setting-label {
    font-size: 11px;
    font-weight: 600;
    color: var(--text);
    margin-bottom: 4px;
    display: flex;
    align-items: center;
    justify-content: space-between;
  }
  .setting-val {
    font-size: 11px;
    font-weight: 700;
    color: var(--accent-strong);
    background: var(--accent-light);
    padding: 1px 6px;
    border-radius: 6px;
  }
  .settings-panel select, .settings-panel .custom-select-trigger {
    min-height: 32px !important;
    height: 32px !important;
    font-size: 11.5px !important;
    padding: 3px 10px !important;
    border-radius: 9px !important;
    margin-bottom: 0 !important;
  }

  /* ── Range Slider Track & Thumb ── */
  .slider-row {
    display: flex;
    align-items: center;
    gap: 8px;
    width: 100%;
  }
  input[type="range"] {
    -webkit-appearance: none;
    appearance: none;
    width: 100%;
    height: 6px;
    border-radius: 999px;
    background: rgba(103, 119, 153, 0.18);
    outline: none;
    cursor: pointer;
    transition: background 0.2s;
  }
  [data-theme="dark"] input[type="range"] {
    background: rgba(255, 255, 255, 0.12);
  }
  input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: #ffffff;
    border: 2px solid var(--accent);
    box-shadow: 0 2px 8px rgba(43, 60, 96, 0.28);
    cursor: grab;
    transition: transform 0.16s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.16s;
  }
  input[type="range"]::-webkit-slider-thumb:hover {
    transform: scale(1.18);
    box-shadow: 0 4px 14px rgba(92, 115, 232, 0.45);
  }
  input[type="range"]::-webkit-slider-thumb:active {
    cursor: grabbing;
    transform: scale(1.08);
  }
  .slider-min, .slider-max {
    font-size: 10px;
    color: var(--text-tertiary);
    font-weight: 600;
    min-width: 18px;
    user-select: none;
  }
  .wp-thumb, .wp-upload {
    border-radius: 11px;
    transition: all 0.24s cubic-bezier(0.16, 1, 0.3, 1);
  }
  .wp-thumb:hover {
    transform: translateY(-2px) scale(1.04);
    box-shadow: 0 8px 20px -8px rgba(0, 0, 0, 0.4);
  }

  /* ── Settings Section SVG & Summary Badge ── */
  .sec-svg {
    width: 14px;
    height: 14px;
    stroke: var(--accent);
    stroke-width: 2.2;
    fill: none;
    stroke-linecap: round;
    stroke-linejoin: round;
    flex-shrink: 0;
  }
  .setting-summary-badge {
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 11px;
    font-weight: 650;
    color: var(--accent-strong);
    background: var(--accent-light);
    border: 1px dashed rgba(92, 115, 232, 0.35);
    border-radius: 9px;
    padding: 7px 12px;
    margin-top: 6px;
    margin-bottom: 4px;
    letter-spacing: 0.02em;
  }

  /* ── Minimal Pure Icon Mode ── */
  body.hide-icon-titles .icon-name {
    display: none !important;
  }
  body.hide-icon-titles .icon-img-wrap {
    margin-bottom: 0 !important;
  }

  /* ── Settings Sections & Toggles ── */
  .setting-section-header {
    font-size: 11.5px;
    font-weight: 750;
    letter-spacing: 0.03em;
    color: var(--accent-strong);
    margin: 8px 0 4px 2px;
    display: flex;
    align-items: center;
    gap: 6px;
  }
  .setting-section-header:first-child {
    margin-top: 0;
  }
  .setting-toggle-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 7px 11px;
    margin-bottom: 5px;
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.36);
    backdrop-filter: blur(16px);
    min-height: 36px;
    transition: all 0.2s ease;
  }
  .setting-toggle-row:hover {
    background: rgba(255, 255, 255, 0.52);
    border-color: var(--glass-border-strong);
  }
  [data-theme="dark"] .setting-toggle-row {
    background: rgba(255, 255, 255, 0.035);
    border-color: var(--glass-border);
  }
  [data-theme="dark"] .setting-toggle-row:hover {
    background: rgba(255, 255, 255, 0.06);
  }
  .setting-toggle-info {
    flex: 1;
    margin-right: 12px;
  }
  .setting-toggle-title {
    font-size: 11.5px;
    font-weight: 650;
    color: var(--text);
  }
  .setting-toggle-desc {
    font-size: 10px;
    color: var(--text-secondary);
    margin-top: 1px;
    line-height: 1.3;
  }
  .switch-control {
    position: relative;
    display: inline-block;
    width: 36px;
    height: 20px;
    flex-shrink: 0;
    cursor: pointer;
  }
  .switch-control input {
    opacity: 0;
    width: 0;
    height: 0;
    position: absolute;
  }
  .switch-slider {
    position: absolute;
    inset: 0;
    background: rgba(103, 119, 153, 0.24);
    border-radius: 999px;
    border: 1px solid var(--glass-border);
    transition: all 0.24s cubic-bezier(0.16, 1, 0.3, 1);
  }
  .switch-slider:before {
    position: absolute;
    content: "";
    height: 14px;
    width: 14px;
    left: 2px;
    bottom: 2px;
    background: #fff;
    border-radius: 50%;
    box-shadow: 0 1px 4px rgba(0, 0, 0, 0.2);
    transition: transform 0.24s cubic-bezier(0.16, 1, 0.3, 1);
  }
  .switch-control input:checked + .switch-slider {
    background: var(--accent);
    border-color: var(--accent);
  }
  .switch-control input:checked + .switch-slider:before {
    transform: translateX(16px);
  }

  /* ── Ultra-Fine Global Scrollbar ── */
  ::-webkit-scrollbar {
    width: 6px;
    height: 6px;
  }
  ::-webkit-scrollbar-track {
    background: transparent;
  }
  ::-webkit-scrollbar-thumb {
    background: var(--scrollbar-thumb);
    border-radius: 999px;
    transition: background 0.2s;
  }
  ::-webkit-scrollbar-thumb:hover {
    background: rgba(91, 105, 133, 0.45);
  }

  /* ── Luxury Toast Notification ── */
  .toast {
    position: fixed;
    bottom: 28px;
    left: 50%;
    transform: translateX(-50%) translateY(20px);
    opacity: 0;
    border-radius: 999px;
    padding: 8px 18px;
    font-size: 12.5px;
    font-weight: 600;
    color: var(--text);
    z-index: 999;
    pointer-events: none;
    transition: all 0.28s cubic-bezier(0.16, 1, 0.3, 1);
  }
  .toast.show {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
  }

  /* ── Settings Sync Card ── */
  .setting-info-card {
    padding: 7px 10px;
    margin-bottom: 4px;
    border: 1px solid rgba(103, 119, 153, 0.1);
    border-radius: 10px;
    background: rgba(255, 255, 255, 0.32);
  }
  [data-theme="dark"] .setting-info-card {
    background: rgba(255, 255, 255, 0.04);
    border-color: var(--glass-border);
  }
  .setting-info-meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 4px;
  }
  .sync-badge {
    font-size: 11px;
    font-weight: 600;
    color: var(--accent-strong);
    background: var(--accent-light);
    padding: 2px 8px;
    border-radius: 6px;
  }
  .sync-status {
    font-size: 10px;
    color: var(--text-tertiary);
  }
  .setting-info-desc {
    font-size: 10.5px;
    color: var(--text-secondary);
    line-height: 1.35;
  }
  .btn-subtle {
    font-size: 11px;
    font-weight: 600;
    color: var(--text-secondary);
    background: rgba(103, 119, 153, 0.1);
    border: 1px solid var(--glass-border);
    border-radius: 8px;
    padding: 5px 10px;
    cursor: pointer;
    transition: all 0.2s;
  }
  .btn-subtle:hover {
    color: #e04b59;
    border-color: rgba(224, 75, 89, 0.35);
    background: rgba(224, 75, 89, 0.08);
  }
  .cfg-file-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
  }
  .cfg-file-card {
    margin-top: 6px;
  }

  /* ── Settings Single-Row Footer Actions ── */
  .settings-actions {
    display: flex !important;
    flex-direction: row !important;
    flex-wrap: nowrap !important;
    align-items: center !important;
    justify-content: space-between !important;
    gap: 6px !important;
    margin-top: 14px !important;
    padding-top: 12px !important;
    border-top: 1px solid var(--glass-border) !important;
    width: 100% !important;
    box-sizing: border-box !important;
  }
  .settings-actions .modal-btn {
    flex: 1 1 0 !important;
    min-height: 32px !important;
    height: 32px !important;
    padding: 0 4px !important;
    font-size: 11px !important;
    font-weight: 600 !important;
    border-radius: 9px !important;
    white-space: nowrap !important;
    display: inline-flex !important;
    align-items: center !important;
    justify-content: center !important;
    text-align: center !important;
    letter-spacing: -0.01em;
  }
  .settings-actions .modal-btn-primary {
    flex: 0.8 1 0 !important;
  }

  :where(button, input, select, .custom-select-trigger, .icon-item):focus-visible {
    outline: 3px solid rgba(92,115,232,0.24); outline-offset: 2px;
  }
  .search-input:focus-visible { outline: none; }
  @media (max-width: 768px) {
    .top-bar { padding: 12px 14px; }
    .hero { padding: 14px 14px 22px; }
    .site-brand { padding-right: 10px; }
    .search-engines { gap: 6px; }
    .se-btn { min-width: 69px; padding: 0 9px; }

    /* 移动端强制分类卡片全宽竖向排列，彻底阻止任何横向挤压与变形 */
    .main-content {
      width: 100% !important;
      max-width: 100% !important;
      padding: 14px 12px calc(64px + env(safe-area-inset-bottom, 0px)) !important;
      box-sizing: border-box !important;
    }
    .clusters-wrap {
      display: flex !important;
      flex-direction: column !important;
      width: 100% !important;
      max-width: 100% !important;
      gap: var(--cluster-gap, 14px) !important;
      box-sizing: border-box !important;
    }
    .clusters-wrap .cat-cluster {
      width: 100% !important;
      max-width: 100% !important;
      box-sizing: border-box !important;
    }
    .masonry-col {
      width: 100% !important;
      max-width: 100% !important;
      flex: 1 1 100% !important;
      display: flex !important;
      flex-direction: column !important;
      gap: var(--cluster-gap, 14px) !important;
      box-sizing: border-box !important;
    }

    /* 移动端卡片内图标固定4列栅格，与主流手机屏幕与桌面保持自然协调 */
    .cat-cluster.grid-fixed {
      grid-template-columns: repeat(4, minmax(0, 1fr)) !important;
    }
    .cat-cluster.grid-fluid {
      grid-template-columns: repeat(auto-fill, minmax(68px, 1fr)) !important;
    }

    /* 移动端不展示无效的键盘快捷键 Ctrl K，为输入框留出充裕空间 */
    .search-shortcut-badge {
      display: none !important;
    }

    /* 增大折叠箭头触控热区 */
    .cat-collapse-btn {
      width: 34px !important;
      height: 34px !important;
    }
  }
  @media (max-width: 480px) {
    .site-brand .greeting { display: block; }
    .site-logo { width: 25px; height: 25px; }
    .top-btn { width: 36px; height: 36px; }
    .hero-clock { font-size: 46px; }
    .search-box { min-height: 48px; }
    .se-btn { min-width: 0; }
    .se-btn { font-size: 0; width: 36px; padding: 0; }
    .se-btn .se-icon-img { width: 17px; height: 17px; }
    .modal-actions { flex-wrap: wrap; }

    .cat-cluster {
      padding: 13px 10px !important;
      column-gap: 6px !important;
      row-gap: 10px !important;
      border-radius: 16px !important;
    }
    .icon-item {
      padding: 6px 2px 5px !important;
      border-radius: 11px !important;
    }
    .icon-name {
      font-size: 11px !important;
      letter-spacing: -0.02em;
    }
  }
  @media (max-width: 360px) {
    .cat-cluster.grid-fixed {
      grid-template-columns: repeat(4, minmax(0, 1fr)) !important;
      column-gap: 4px !important;
      padding: 11px 7px !important;
    }
    .icon-name {
      font-size: 10px !important;
    }
  }
  @media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { scroll-behavior: auto !important; animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; }
  }

  /* ═══════════════════════════════════════
     Dark Theme — Deep Space Minimalist Luxury
     ═══════════════════════════════════════ */
  [data-theme="dark"] {
    --page-bg: #090d16;
    --glass-bg: rgba(15, 23, 42, 0.78);
    --glass-bg-heavy: rgba(15, 23, 42, 0.88);
    --glass-bg-hover: rgba(30, 41, 59, 0.92);
    --glass-border: rgba(255, 255, 255, 0.12);
    --glass-border-strong: rgba(255, 255, 255, 0.22);
    --glass-highlight: rgba(255, 255, 255, 0.08);
    --glass-shadow: 0 24px 60px -20px rgba(0, 0, 0, 0.85), 0 4px 14px rgba(0, 0, 0, 0.5), inset 0 1px 0 var(--glass-highlight);
    --text: #f8fafc;
    --text-secondary: #cbd5e1;
    --text-tertiary: #94a3b8;
    --accent: #818cf8;
    --accent-strong: #a5b4fc;
    --accent-light: rgba(129, 140, 248, 0.16);
    --accent-glow: rgba(129, 140, 248, 0.28);
    --search-bg: rgba(15, 23, 42, 0.85);
    --search-border: rgba(255, 255, 255, 0.14);
    --modal-bg: rgba(15, 23, 42, 0.95);
    --modal-overlay: rgba(2, 6, 23, 0.65);
    --input-bg: rgba(255, 255, 255, 0.06);
    --input-border: rgba(255, 255, 255, 0.12);
    --btn-glass: rgba(255, 255, 255, 0.07);
    --btn-glass-hover: rgba(255, 255, 255, 0.14);
    --divider: rgba(255, 255, 255, 0.1);
    --clock-color: #f8fafc;
    --clock-sub-color: #e2e8f0;
    --clock-date-color: #cbd5e1;
    --clock-shadow: 0 2px 16px rgba(0, 0, 0, 0.75);
  }
  [data-theme="dark"] .bg-layer { opacity: 0.18; }
  [data-theme="dark"] .bg-overlay { background: rgba(5, 8, 15, 0.45); }
  [data-theme="dark"] .sphere-1 { background: rgba(99, 102, 241, 0.24); }
  [data-theme="dark"] .sphere-2 { background: rgba(139, 92, 246, 0.20); }
  [data-theme="dark"] .sphere-3 { background: rgba(59, 130, 246, 0.18); }
  [data-theme="dark"] .site-brand {
    background: rgba(15, 23, 42, 0.78);
    border-color: rgba(255, 255, 255, 0.12);
  }
  [data-theme="dark"] .site-name { color: #f8fafc; }
  [data-theme="dark"] .greeting-badge {
    color: #a5b4fc;
    background: rgba(129, 140, 248, 0.18);
    border-color: rgba(129, 140, 248, 0.3);
  }
  [data-theme="dark"] .greeting-badge.t-day {
    color: #fcd34d;
    background: rgba(251, 191, 36, 0.15);
    border-color: rgba(251, 191, 36, 0.30);
  }
  [data-theme="dark"] .greeting-badge.t-dusk {
    color: #fdba74;
    background: rgba(253, 186, 116, 0.13);
    border-color: rgba(253, 186, 116, 0.28);
  }
  [data-theme="dark"] .greeting-badge.t-night {
    color: #a5b4fc;
    background: rgba(129, 140, 248, 0.18);
    border-color: rgba(129, 140, 248, 0.32);
  }
  [data-theme="dark"] .top-btn {
    background: rgba(15, 23, 42, 0.78);
    border-color: rgba(255, 255, 255, 0.12);
    color: #cbd5e1;
  }
  [data-theme="dark"] .top-btn:hover {
    color: #ffffff;
    background: rgba(30, 41, 59, 0.95);
    border-color: rgba(255, 255, 255, 0.25);
  }
  [data-theme="dark"] .hero-clock {
    color: var(--clock-color);
    text-shadow: var(--clock-shadow);
  }
  [data-theme="dark"] .hero-clock-sub {
    color: var(--clock-sub-color);
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(255, 255, 255, 0.12);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.35);
  }
  [data-theme="dark"] .hero-clock-sub .tz-label { color: var(--clock-sub-color); }
  [data-theme="dark"] .hero-date {
    color: var(--clock-date-color);
    text-shadow: 0 1px 8px rgba(0, 0, 0, 0.5);
  }
  [data-theme="dark"] .search-box {
    background: var(--search-bg);
    border-color: var(--search-border);
  }
  [data-theme="dark"] .search-box:focus-within,
  [data-theme="dark"] .search-box.has-input {
    background: rgba(15, 23, 42, 0.92);
    border-color: rgba(165, 180, 252, 0.35);
    box-shadow: var(--search-focus-shadow);
  }
  [data-theme="dark"] .search-input { color: #f8fafc; }
  [data-theme="dark"] .search-input::placeholder { color: #94a3b8; }
  [data-theme="dark"] .search-engine-btn {
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(255, 255, 255, 0.12);
  }
  [data-theme="dark"] .search-engine-btn:hover { background: rgba(255, 255, 255, 0.14); }
  [data-theme="dark"] .se-btn {
    background: rgba(15, 23, 42, 0.72);
    border-color: rgba(255, 255, 255, 0.12);
    color: #cbd5e1;
  }
  [data-theme="dark"] .se-btn:hover {
    background: rgba(30, 41, 59, 0.95);
    color: #ffffff;
    border-color: rgba(255, 255, 255, 0.22);
  }
  [data-theme="dark"] .se-btn.active {
    color: #a5b4fc;
    background: rgba(129, 140, 248, 0.18);
    border-color: rgba(129, 140, 248, 0.4);
    box-shadow: 0 6px 18px -8px rgba(129, 140, 248, 0.5), inset 0 1px 0 rgba(255, 255, 255, 0.15);
  }
  [data-theme="dark"] .cat-cluster {
    background: rgba(15, 23, 42, var(--cluster-opacity, 0.72));
    border-color: rgba(255, 255, 255, 0.12);
  }
  [data-theme="dark"] .cat-cluster:hover {
    border-color: rgba(129, 140, 248, 0.32);
    box-shadow: 0 24px 60px -20px rgba(0, 0, 0, 0.85), inset 0 1px 0 rgba(255, 255, 255, 0.08);
  }
  [data-theme="dark"] .cat-header {
    color: #f8fafc;
    border-bottom-color: rgba(255, 255, 255, 0.08);
  }
  [data-theme="dark"] .cat-title { color: #f8fafc; }
  [data-theme="dark"] .cat-count {
    color: #cbd5e1;
    background: rgba(255, 255, 255, 0.1);
  }
  [data-theme="dark"] .cat-icon-badge {
    background: rgba(129, 140, 248, 0.18);
    color: #a5b4fc;
  }
  [data-theme="dark"] .cat-collapse-btn { color: #94a3b8; }
  [data-theme="dark"] .cat-collapse-btn:hover {
    color: #a5b4fc;
    background: rgba(129, 140, 248, 0.16);
  }
  [data-theme="dark"] .icon-item { color: #f1f5f9; }
  [data-theme="dark"] .icon-item:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(129, 140, 248, 0.25);
    box-shadow: 0 10px 24px -12px rgba(0, 0, 0, 0.6), inset 0 1px 0 rgba(255, 255, 255, 0.1);
  }
  [data-theme="dark"] .icon-img-wrap {
    background: rgba(255, 255, 255, 0.07);
    border-color: rgba(255, 255, 255, 0.12);
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.08);
  }
  [data-theme="dark"] .icon-item:hover .icon-img-wrap {
    background: rgba(129, 140, 248, 0.18);
    border-color: rgba(129, 140, 248, 0.4);
    box-shadow: 0 6px 18px -6px rgba(129, 140, 248, 0.4);
  }
  [data-theme="dark"] .icon-name {
    color: #f1f5f9;
    font-weight: 550;
  }
  [data-theme="dark"] .icon-item:hover .icon-name { color: #a5b4fc; }
  [data-theme="dark"] .setting-group {
    background: rgba(255, 255, 255, 0.04);
    border-color: rgba(255, 255, 255, 0.09);
  }
  [data-theme="dark"] .setting-label { color: #f8fafc; }
  [data-theme="dark"] .setting-val {
    color: #93c5fd;
    background: rgba(129, 140, 248, 0.18);
  }
  [data-theme="dark"] .modal,
  [data-theme="dark"] .settings-panel {
    background: var(--modal-bg);
    border-color: rgba(255, 255, 255, 0.12);
    box-shadow: 0 28px 70px -24px rgba(0, 0, 0, 0.9), inset 0 1px 0 rgba(255, 255, 255, 0.08);
  }
  [data-theme="dark"] .modal h3,
  [data-theme="dark"] .settings-panel h3 { color: #f8fafc; }
  [data-theme="dark"] .modal label { color: #cbd5e1; }
  [data-theme="dark"] .modal input,
  [data-theme="dark"] .modal select,
  [data-theme="dark"] .custom-select-trigger {
    background: rgba(255, 255, 255, 0.06);
    border-color: rgba(255, 255, 255, 0.12);
    color: #f8fafc;
  }
  [data-theme="dark"] .modal input:focus,
  [data-theme="dark"] .modal select:focus {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--accent);
  }
  [data-theme="dark"] .modal-btn-cancel {
    background: rgba(255, 255, 255, 0.06);
    border-color: rgba(255, 255, 255, 0.12);
    color: #cbd5e1;
  }
  [data-theme="dark"] .modal-btn-cancel:hover {
    background: rgba(255, 255, 255, 0.12);
    color: #ffffff;
  }
  [data-theme="dark"] .search-suggest {
    background: rgba(15, 23, 42, 0.96);
    border-color: rgba(255, 255, 255, 0.14);
    box-shadow: 0 24px 60px -16px rgba(0, 0, 0, 0.9), inset 0 1px 0 rgba(255, 255, 255, 0.08);
  }
  [data-theme="dark"] .suggest-header { color: #94a3b8; }
  [data-theme="dark"] .suggest-title { color: #f8fafc; }
  [data-theme="dark"] .suggest-domain { color: #94a3b8; }
  [data-theme="dark"] .suggest-cat {
    color: #cbd5e1;
    background: rgba(255, 255, 255, 0.08);
  }
  [data-theme="dark"] .suggest-key { color: #a5b4fc; }
  [data-theme="dark"] .suggest-item:hover,
  [data-theme="dark"] .suggest-item.selected {
    background: rgba(129, 140, 248, 0.18);
    color: #a5b4fc;
  }

  /* ═══════════════════════════════════════
     Bottom Status Bar (Glassmorphic)
     ═══════════════════════════════════════ */
  .bottom-status-bar {
    position: fixed;
    bottom: 12px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 90;
    pointer-events: auto;
    transition: opacity 0.3s ease, transform 0.3s cubic-bezier(0.2, 0.8, 0.2, 1);
  }
  .status-bar-inner {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    height: 28px;
    padding: 0 12px;
    border-radius: 14px;
    background: rgba(255, 255, 255, 0.55);
    border: 1px solid rgba(255, 255, 255, 0.45);
    box-shadow: 0 4px 16px rgba(31, 38, 135, 0.08), inset 0 1px 0 rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(20px) saturate(160%);
    -webkit-backdrop-filter: blur(20px) saturate(160%);
    font-size: 11px;
    color: #4b5568;
    white-space: nowrap;
    user-select: none;
  }
  [data-theme="dark"] .status-bar-inner {
    background: rgba(22, 28, 44, 0.65);
    border-color: rgba(255, 255, 255, 0.10);
    box-shadow: 0 4px 18px rgba(0, 0, 0, 0.35), inset 0 1px 0 rgba(255, 255, 255, 0.08);
    color: #9aa5b9;
  }
  .status-item {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    line-height: 1;
  }
  .status-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: #10b981;
    box-shadow: 0 0 6px rgba(16, 185, 129, 0.6);
    flex-shrink: 0;
  }
  .status-dot.offline {
    background: #ef4444;
    box-shadow: 0 0 6px rgba(239, 68, 68, 0.6);
  }
  .status-dot.loading {
    background: #f59e0b;
    box-shadow: 0 0 6px rgba(245, 158, 11, 0.6);
    animation: pulseDot 1.4s infinite alternate;
  }
  @keyframes pulseDot {
    0% { opacity: 0.4; }
    100% { opacity: 1; }
  }
  .status-text {
    font-weight: 600;
    font-size: 10.5px;
    letter-spacing: 0.02em;
  }
  .status-divider {
    width: 1px;
    height: 10px;
    background: rgba(103, 119, 153, 0.22);
    margin: 0 1px;
  }
  [data-theme="dark"] .status-divider {
    background: rgba(255, 255, 255, 0.12);
  }
  .status-svg {
    width: 12px;
    height: 12px;
    stroke: currentColor;
    stroke-width: 2;
    stroke-linecap: round;
    stroke-linejoin: round;
    fill: none;
    opacity: 0.75;
    flex-shrink: 0;
  }
  .status-label {
    opacity: 0.72;
    font-weight: 500;
    font-size: 10.5px;
  }
  .status-val {
    font-weight: 600;
    color: #1e293b;
    letter-spacing: -0.01em;
  }
  [data-theme="dark"] .status-val {
    color: #e2e8f0;
  }
  #statusIpWrap {
    cursor: pointer;
    transition: opacity 0.15s;
  }
  #statusIpWrap:hover {
    opacity: 0.8;
  }
  .status-btn-refresh {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: rgba(0, 0, 0, 0.04);
    border: 1px solid rgba(0, 0, 0, 0.05);
    color: inherit;
    cursor: pointer;
    padding: 0;
    margin-left: 4px;
    opacity: 0.72;
    transition: all 0.22s cubic-bezier(0.16, 1, 0.3, 1);
    outline: none;
    box-sizing: border-box;
    flex-shrink: 0;
  }
  [data-theme="dark"] .status-btn-refresh {
    background: rgba(255, 255, 255, 0.06);
    border-color: rgba(255, 255, 255, 0.08);
    opacity: 0.75;
  }
  .status-btn-refresh:hover {
    opacity: 1;
    color: var(--accent);
    background: rgba(0, 0, 0, 0.08);
    border-color: rgba(0, 0, 0, 0.1);
    transform: scale(1.08);
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.06);
  }
  [data-theme="dark"] .status-btn-refresh:hover {
    background: rgba(255, 255, 255, 0.14);
    border-color: rgba(255, 255, 255, 0.18);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
  }
  .status-btn-refresh:active {
    transform: scale(0.9);
    transition-duration: 0.08s;
  }
  .status-btn-refresh.spinning {
    opacity: 1;
    color: var(--accent);
    pointer-events: none;
    background: rgba(var(--accent-rgb, 99, 102, 241), 0.12);
    border-color: var(--accent);
  }
  .status-btn-refresh.spinning svg {
    animation: statusBtnSpin 0.7s cubic-bezier(0.35, 0, 0.25, 1) infinite;
  }
  @keyframes statusBtnSpin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
  }
  .status-btn-refresh svg {
    width: 11.5px;
    height: 11.5px;
    stroke: currentColor;
    stroke-width: 2.2;
    stroke-linecap: round;
    stroke-linejoin: round;
    fill: none;
    display: block;
    transition: transform 0.22s cubic-bezier(0.16, 1, 0.3, 1);
  }
  .ip-updated-flash {
    animation: ipFlash 0.9s cubic-bezier(0.16, 1, 0.3, 1);
  }
  @keyframes ipFlash {
    0% { color: #10b981; }
    40% { color: #10b981; text-shadow: 0 0 8px rgba(16, 185, 129, 0.5); }
    100% { color: inherit; }
  }
  .status-svg {
    width: 11px;
    height: 11px;
    stroke: currentColor;
    stroke-width: 2;
    stroke-linecap: round;
    stroke-linejoin: round;
    fill: none;
  }
  @media (max-width: 600px) {
    #statusIspWrap, #statusIspDivider { display: none; }
    .bottom-status-bar { bottom: 8px; max-width: calc(100vw - 24px); }
    .status-bar-inner { font-size: 10px; height: 26px; padding: 0 9px; }
  }

  /* ═══════════════════════════════════════
     Toast Action Button（撤销等）
     ═══════════════════════════════════════ */
  .toast { display: flex; align-items: center; justify-content: center; }
  .toast-action {
    pointer-events: auto;
    margin-left: 12px;
    border: none; background: var(--accent); color: #fff;
    font-size: 12px; font-weight: 700; padding: 3px 12px; border-radius: 999px;
    cursor: pointer; transition: filter 0.15s, transform 0.15s;
    font-family: inherit;
  }
  .toast-action:hover { filter: brightness(1.12); }
  .toast-action:active { transform: scale(0.95); }

  /* ═══════════════════════════════════════
     Search Suggest — engine search fallback row
     ═══════════════════════════════════════ */
  .suggest-search {
    margin-top: 3px;
    padding-top: calc(var(--suggest-item-pad-y) + 2px);
    border-top: 1px solid var(--divider);
    border-radius: 0 0 8px 8px;
  }
  .suggest-search .suggest-icon { background: transparent; }

  /* ═══════════════════════════════════════
     Context Menu — category section（编辑/删除分类）
     ═══════════════════════════════════════ */
  .context-menu .cm-section-cat { display: none; }
  .context-menu.mode-blank.has-cat .cm-section-cat { display: block; }

  /* ═══════════════════════════════════════
     Manage Category Modal — icon grid
     ═══════════════════════════════════════ */
  .cat-icon-grid { display: flex; flex-wrap: wrap; gap: 8px; margin: 4px 0 12px; }
  .cat-icon-cell {
    width: 42px; height: 42px; border-radius: 12px;
    border: 1.5px solid var(--glass-border); background: rgba(255,255,255,0.04);
    color: var(--text-secondary); cursor: pointer; display: flex; align-items: center; justify-content: center;
    padding: 0; transition: all 0.15s;
  }
  .cat-icon-cell:hover { border-color: var(--accent); color: var(--accent); background: var(--accent-light); }
  .cat-icon-cell.selected {
    border-color: var(--accent); color: var(--accent); background: var(--accent-light);
    box-shadow: 0 0 0 2px rgba(79, 110, 246, 0.16);
  }
  .cat-icon-cell .cat-svg { width: 20px; height: 20px; }
  [data-theme="dark"] .cat-icon-cell { background: rgba(255,255,255,0.05); }
  .modal-btn-danger-text { color: #e85d75 !important; }
  .modal-btn-danger-text:hover { border-color: rgba(232,93,117,0.4) !important; background: rgba(232,93,117,0.08) !important; }

  /* ═══════════════════════════════════════
     Wallpaper Gallery — Bing daily tile
     ═══════════════════════════════════════ */
  .wp-bing { display: flex; align-items: flex-end; background-size: cover; background-position: center; }
  .wp-bing-label {
    position: absolute; left: 0; right: 0; bottom: 0;
    font-size: 10px; font-weight: 700; color: #fff; text-align: center;
    padding: 3px 0 2px; letter-spacing: 0.1em; pointer-events: none;
    background: linear-gradient(transparent, rgba(0, 0, 0, 0.6));
    text-shadow: 0 1px 2px rgba(0,0,0,0.5);
  }