/* ============================================================
   塔猫AI · 二维码无网传输系统
   共享玻璃拟态 (Glassmorphism) 样式
   ============================================================ */

:root {
  --bg: #070b16;
  --text: #f2f6ff;
  --text-dim: rgba(242, 246, 255, 0.62);
  --text-faint: rgba(242, 246, 255, 0.4);
  --accent: #4dd6ff;
  --accent-2: #7c6bff;
  --success: #37e6a4;
  --warning: #ffb64d;
  --danger: #ff5d7a;
  --glass: rgba(255, 255, 255, 0.07);
  --glass-strong: rgba(255, 255, 255, 0.12);
  --stroke: rgba(255, 255, 255, 0.16);
  --stroke-soft: rgba(255, 255, 255, 0.08);
  --radius: 22px;
  --blur: blur(22px) saturate(160%);
  --font: -apple-system, BlinkMacSystemFont, "SF Pro Display", "PingFang SC",
          "Microsoft YaHei", "Segoe UI", Roboto, "Helvetica Neue", sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; -webkit-tap-highlight-color: transparent; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
  position: relative;
}

/* 背景光斑动画 */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background:
    radial-gradient(46vw 46vw at 8% 6%, rgba(77, 214, 255, 0.16), transparent 60%),
    radial-gradient(40vw 40vw at 92% 18%, rgba(124, 107, 255, 0.18), transparent 60%),
    radial-gradient(52vw 52vw at 70% 96%, rgba(55, 230, 164, 0.10), transparent 62%),
    radial-gradient(30vw 30vw at 30% 80%, rgba(255, 182, 77, 0.08), transparent 60%);
  pointer-events: none;
  z-index: -2;
}

body::after {
  content: '';
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.025) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(circle at 50% 30%, #000 0%, transparent 80%);
  pointer-events: none;
  z-index: -1;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

/* 顶部导航 */
.nav {
  position: sticky;
  top: 0;
  z-index: 900;
  background: rgba(10, 16, 32, 0.55);
  backdrop-filter: var(--blur);
  -webkit-backdrop-filter: var(--blur);
  border-bottom: 1px solid var(--stroke-soft);
}
.nav-inner {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 20px;
  height: 62px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}
@media (max-width: 760px) {
  .nav-inner { flex-wrap: wrap; height: auto; padding: 10px 14px; gap: 8px; }
  .nav-seg { order: 3; width: 100%; justify-content: center; }
  .nav-seg .seg { width: 100%; }
  .nav-seg .seg-btn { flex: 1; justify-content: center; padding: 9px 8px; }
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
  font-weight: 800;
  font-size: 19px;
  letter-spacing: 0.3px;
}
.brand:hover { text-decoration: none; }
.brand-logo {
  width: 34px;
  height: 34px;
  border-radius: 11px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  box-shadow: 0 0 18px rgba(77, 214, 255, 0.35);
  font-size: 18px;
}
.nav-links { display: flex; gap: 10px; align-items: center; }
.nav-links a {
  color: var(--text-dim);
  font-size: 14px;
  font-weight: 500;
  padding: 8px 15px;
  border-radius: 12px;
  border: 1px solid transparent;
  transition: all .25s ease;
}
.nav-links a:hover {
  color: var(--accent);
  background: rgba(77, 214, 255, 0.1);
  border-color: rgba(77, 214, 255, 0.25);
  text-decoration: none;
}
.nav-links a.active {
  color: var(--text);
  background: linear-gradient(135deg, rgba(77,214,255,0.2), rgba(124,107,255,0.2));
  border-color: rgba(77, 214, 255, 0.3);
}

/* 布局容器 */
.container { max-width: 1080px; margin: 0 auto; padding: 34px 20px 90px; }
.container.narrow { max-width: 860px; }

/* 页面标题 */
.page-header { text-align: center; margin-bottom: 34px; }
.page-header h1 {
  font-size: clamp(28px, 4.4vw, 42px);
  font-weight: 800;
  letter-spacing: 0.5px;
  background: linear-gradient(120deg, #fff 20%, var(--accent) 60%, var(--accent-2));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: 10px;
}
.page-header p { color: var(--text-dim); font-size: 15px; max-width: 680px; margin: 0 auto; }
.page-header .badge {
  display: inline-flex;
  gap: 6px;
  align-items: center;
  padding: 6px 14px;
  margin-bottom: 16px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
  color: var(--accent);
  background: rgba(77, 214, 255, 0.1);
  border: 1px solid rgba(77, 214, 255, 0.3);
}

/* 玻璃卡片 */
.glass {
  background: var(--glass);
  backdrop-filter: var(--blur);
  -webkit-backdrop-filter: var(--blur);
  border: 1px solid var(--stroke);
  border-radius: var(--radius);
  padding: 26px;
  margin-bottom: 22px;
  position: relative;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.28);
}
.glass::before {
  content: '';
  position: absolute;
  top: 0; left: 18px; right: 18px;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.35), transparent);
}
.glass-hover { transition: border-color .3s, box-shadow .3s, transform .3s; }
.glass-hover:hover {
  border-color: rgba(77, 214, 255, 0.35);
  box-shadow: 0 14px 46px rgba(77, 214, 255, 0.12);
}

.card-title {
  display: flex;
  align-items: center;
  gap: 11px;
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 18px;
  color: var(--text);
}
.card-title .icon {
  width: 34px; height: 34px;
  flex-shrink: 0;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 17px;
  background: linear-gradient(135deg, rgba(77,214,255,0.18), rgba(124,107,255,0.18));
  border: 1px solid rgba(77, 214, 255, 0.3);
}
.card-title small { font-weight: 500; color: var(--text-faint); font-size: 13px; margin-left: 2px; }

/* 按钮 */
.btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 26px;
  border-radius: 14px;
  border: 1px solid transparent;
  font-size: 15px;
  font-weight: 600;
  font-family: var(--font);
  cursor: pointer;
  color: var(--text);
  background: rgba(255, 255, 255, 0.08);
  transition: all .28s ease;
  user-select: none;
  overflow: hidden;
}
.btn::after {
  content: '';
  position: absolute;
  top: 0; left: -120%;
  width: 100%; height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.18), transparent);
  transition: left .5s;
}
.btn:hover:not(:disabled)::after { left: 120%; }
.btn:hover:not(:disabled) { transform: translateY(-2px); }
.btn:disabled { opacity: 0.45; cursor: not-allowed; transform: none; }
.btn-primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #04101d;
  box-shadow: 0 6px 24px rgba(77, 214, 255, 0.3);
}
.btn-primary:hover:not(:disabled) { box-shadow: 0 8px 30px rgba(77, 214, 255, 0.42); }
.btn-success {
  background: linear-gradient(135deg, var(--success), #1fbf8f);
  color: #03120d;
  box-shadow: 0 6px 24px rgba(55, 230, 164, 0.28);
}
.btn-danger {
  background: rgba(255, 93, 122, 0.14);
  color: var(--danger);
  border-color: rgba(255, 93, 122, 0.35);
}
.btn-danger:hover:not(:disabled) { background: var(--danger); color: #fff; }
.btn-ghost { background: rgba(255, 255, 255, 0.06); border-color: var(--stroke); }
.btn-ghost:hover:not(:disabled) { background: rgba(255, 255, 255, 0.12); }
.btn-sm { padding: 8px 16px; font-size: 13px; border-radius: 11px; }
.btn-lg { padding: 15px 34px; font-size: 16px; border-radius: 16px; }
.btn-block { width: 100%; }

/* 上传区 */
.upload-zone {
  border: 2px dashed rgba(77, 214, 255, 0.35);
  border-radius: 18px;
  padding: 48px 24px;
  text-align: center;
  cursor: pointer;
  background: rgba(77, 214, 255, 0.04);
  transition: all .3s ease;
}
.upload-zone:hover, .upload-zone.dragover {
  border-color: var(--accent);
  background: rgba(77, 214, 255, 0.1);
}
.upload-zone .u-icon { font-size: 46px; margin-bottom: 12px; filter: drop-shadow(0 4px 14px rgba(77,214,255,0.35)); }
.upload-zone .u-title { font-size: 18px; font-weight: 700; margin-bottom: 6px; }
.upload-zone .u-hint { font-size: 13px; color: var(--text-dim); }
.upload-zone.has-file { border-color: var(--success); background: rgba(55, 230, 164, 0.07); }

/* 信息行 */
.info-grid { display: grid; grid-template-columns: 1fr; gap: 0; }
.info-row {
  display: flex;
  justify-content: space-between;
  gap: 14px;
  padding: 11px 2px;
  border-bottom: 1px solid var(--stroke-soft);
  font-size: 14px;
}
.info-row:last-child { border-bottom: none; }
.info-row .label { color: var(--text-dim); flex-shrink: 0; }
.info-row .value { font-weight: 600; text-align: right; word-break: break-all; font-family: "SF Mono", Consolas, monospace; }

/* 指纹 */
.fingerprint {
  margin-top: 14px;
  padding: 14px;
  border-radius: 14px;
  text-align: center;
  background: linear-gradient(135deg, rgba(77,214,255,0.1), rgba(124,107,255,0.1));
  border: 1px solid rgba(77, 214, 255, 0.25);
}
.fingerprint .f-label { font-size: 11px; letter-spacing: 0.14em; color: var(--text-dim); text-transform: uppercase; margin-bottom: 4px; }
.fingerprint .f-value {
  font-family: "SF Mono", Consolas, monospace;
  font-size: 24px; font-weight: 800;
  color: var(--accent);
  letter-spacing: 4px;
  text-shadow: 0 0 18px rgba(77, 214, 255, 0.5);
}

/* 滑块设置 */
.setting-row { margin-bottom: 20px; }
.setting-row:last-child { margin-bottom: 0; }
.setting-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 10px;
}
.setting-label { font-size: 14px; font-weight: 500; color: var(--text-dim); }
.setting-value {
  font-size: 13px;
  font-weight: 700;
  color: var(--accent);
  font-family: "SF Mono", Consolas, monospace;
  background: rgba(77, 214, 255, 0.1);
  border: 1px solid rgba(77, 214, 255, 0.28);
  padding: 4px 12px;
  border-radius: 999px;
}
.setting-hint { font-size: 12px; color: var(--warning); margin-top: 7px; display: none; }
.setting-hint.show { display: block; }

input[type="range"] {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 6px;
  border-radius: 4px;
  background: rgba(255, 255, 255, 0.12);
  outline: none;
  cursor: pointer;
}
input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 20px; height: 20px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  border: 2px solid #fff;
  box-shadow: 0 0 14px rgba(77, 214, 255, 0.5);
  cursor: pointer;
  transition: transform .2s;
}
input[type="range"]::-webkit-slider-thumb:hover { transform: scale(1.15); }
input[type="range"]::-moz-range-thumb {
  width: 18px; height: 18px; border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  border: 2px solid #fff; cursor: pointer;
}
.slider-marks { display: flex; justify-content: space-between; margin-top: 7px; font-size: 11px; color: var(--text-faint); }

/* 开关 */
.toggle-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 12px 16px;
  background: rgba(0, 0, 0, 0.22);
  border-radius: 14px;
  border: 1px solid var(--stroke-soft);
  margin-bottom: 12px;
}
.toggle-row .t-label { font-size: 14px; color: var(--text-dim); display: flex; align-items: center; gap: 8px; }
.toggle { position: relative; width: 50px; height: 29px; flex-shrink: 0; }
.toggle input { opacity: 0; width: 0; height: 0; }
.toggle .slider {
  position: absolute; inset: 0;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid var(--stroke);
  border-radius: 999px;
  transition: all .3s;
  cursor: pointer;
}
.toggle .slider::before {
  content: '';
  position: absolute;
  height: 21px; width: 21px;
  left: 3px; top: 3px;
  background: #fff;
  border-radius: 50%;
  transition: all .3s;
  box-shadow: 0 2px 8px rgba(0,0,0,0.35);
}
.toggle input:checked + .slider {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  border-color: transparent;
}
.toggle input:checked + .slider::before { transform: translateX(21px); }

/* 选择器 */
select, input[type="text"], textarea {
  font-family: var(--font);
  font-size: 14px;
  color: var(--text);
  background: rgba(0, 0, 0, 0.3);
  border: 1px solid var(--stroke);
  border-radius: 12px;
  padding: 12px 14px;
  outline: none;
  transition: border-color .25s;
}
select:focus, input[type="text"]:focus, textarea:focus { border-color: rgba(77, 214, 255, 0.5); }
select option { background: #10182c; color: var(--text); }

/* 状态提示 */
.status {
  padding: 13px 18px;
  border-radius: 13px;
  font-size: 13.5px;
  text-align: center;
  display: none;
  border: 1px solid transparent;
}
.status.show { display: block; }
.status.info { background: rgba(77, 214, 255, 0.1); color: var(--accent); border-color: rgba(77, 214, 255, 0.3); }
.status.success { background: rgba(55, 230, 164, 0.1); color: var(--success); border-color: rgba(55, 230, 164, 0.3); }
.status.error { background: rgba(255, 93, 122, 0.12); color: var(--danger); border-color: rgba(255, 93, 122, 0.35); }

/* 进度条 */
.progress-wrap { margin-top: 16px; }
.progress-header { display: flex; justify-content: space-between; margin-bottom: 8px; font-size: 13px; color: var(--text-dim); }
.progress-header .p-value { color: var(--accent); font-weight: 700; font-family: "SF Mono", Consolas, monospace; }
.progress-bar {
  height: 9px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: 6px;
  overflow: hidden;
}
.progress-fill {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--accent), var(--success));
  border-radius: 6px;
  transition: width .35s ease;
  box-shadow: 0 0 12px rgba(77, 214, 255, 0.4);
}

/* 二维码展示区 */
.qr-display { display: flex; flex-direction: column; align-items: center; gap: 16px; }
.qr-frame {
  padding: 18px;
  background: rgba(0, 0, 0, 0.38);
  border-radius: 20px;
  border: 2px solid var(--stroke);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.4);
  transition: border-color .3s, box-shadow .3s;
}
.qr-frame.filename { border-color: var(--warning); box-shadow: 0 12px 40px rgba(255, 182, 77, 0.22); }
.qr-frame.data { border-color: var(--accent); box-shadow: 0 12px 40px rgba(77, 214, 255, 0.2); }
.qr-frame img, .qr-frame canvas { display: block; max-width: 100%; height: auto; border-radius: 8px; }
.qr-meta { text-align: center; }
.qr-counter { font-size: 26px; font-weight: 800; margin-bottom: 4px; }
.qr-type {
  display: inline-block;
  padding: 4px 14px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.05em;
}
.qr-type.data { background: rgba(77, 214, 255, 0.14); color: var(--accent); border: 1px solid rgba(77, 214, 255, 0.3); }
.qr-type.filename { background: rgba(255, 182, 77, 0.14); color: var(--warning); border: 1px solid rgba(255, 182, 77, 0.3); }
.qr-hint { margin-top: 8px; font-size: 13px; color: var(--text-dim); }

/* 播放控制条 */
.play-controls {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 6px;
}
.play-controls .btn { min-width: 52px; padding: 12px 18px; }

/* 块级网格（每 10 个一组） */
.block-groups { display: flex; flex-direction: column; gap: 14px; max-height: 340px; overflow-y: auto; padding-right: 6px; }
.block-group {
  border: 1px solid var(--stroke-soft);
  background: rgba(0, 0, 0, 0.18);
  border-radius: 14px;
  padding: 10px 12px;
}
.block-group .g-label {
  font-size: 12px;
  color: var(--text-faint);
  font-weight: 600;
  margin-bottom: 8px;
  letter-spacing: 0.04em;
  display: flex;
  align-items: center;
  gap: 8px;
}
.block-group .g-count { margin-left: auto; color: var(--success); font-family: "SF Mono", monospace; }
.block-group .g-missing { color: var(--danger); }
.block-cells { display: grid; grid-template-columns: repeat(10, 1fr); gap: 6px; }
.block-cell {
  aspect-ratio: 1;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  font-weight: 700;
  font-family: "SF Mono", Consolas, monospace;
  color: var(--text-dim);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--stroke-soft);
  cursor: pointer;
  transition: all .22s ease;
}
.block-cell:hover { transform: scale(1.08); border-color: var(--accent); }
.block-cell.active {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #04101d;
  border-color: transparent;
  box-shadow: 0 4px 14px rgba(77, 214, 255, 0.35);
}
.block-cell.received {
  background: linear-gradient(135deg, var(--success), #1fbf8f);
  color: #03120d;
  border-color: transparent;
}
.block-cell.selected {
  box-shadow: 0 0 0 2px var(--warning) inset, 0 4px 12px rgba(255, 182, 77, 0.4);
}
@media (max-width: 560px) {
  .block-cells { grid-template-columns: repeat(5, 1fr); }
}

/* 未接收块单独区域 */
.missing-area {
  border: 1px solid rgba(255, 93, 122, 0.3);
  background: rgba(255, 93, 122, 0.06);
  border-radius: 16px;
  padding: 14px;
  margin-top: 14px;
}
.missing-area .m-title {
  font-size: 13px;
  font-weight: 700;
  color: var(--danger);
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 10px;
}
.missing-area .m-title .badge-count {
  background: var(--danger);
  color: #fff;
  border-radius: 999px;
  font-size: 11px;
  padding: 1px 9px;
}
.missing-group { border: 1px solid rgba(255, 93, 122, 0.18); border-radius: 11px; padding: 8px 10px; margin-bottom: 8px; }
.missing-group .g-label { color: rgba(255, 93, 122, 0.8); }
.missing-cell {
  aspect-ratio: 1;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  font-weight: 700;
  font-family: "SF Mono", Consolas, monospace;
  color: var(--danger);
  background: rgba(255, 93, 122, 0.12);
  border: 1px solid rgba(255, 93, 122, 0.35);
}

/* 模式切换 */
.mode-switcher {
  display: flex;
  gap: 4px;
  background: rgba(0, 0, 0, 0.3);
  border: 1px solid var(--stroke);
  border-radius: 16px;
  padding: 5px;
  width: fit-content;
  margin: 0 auto 26px;
}
.mode-btn {
  padding: 11px 22px;
  border: none;
  border-radius: 12px;
  background: transparent;
  color: var(--text-dim);
  font-size: 14.5px;
  font-weight: 600;
  font-family: var(--font);
  cursor: pointer;
  transition: all .28s ease;
  display: flex;
  align-items: center;
  gap: 8px;
}
.mode-btn.active {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #04101d;
  box-shadow: 0 4px 16px rgba(77, 214, 255, 0.3);
}
@media (max-width: 640px) { .mode-btn { padding: 10px 13px; font-size: 13px; } }

/* 视频扫描预览 */
.video-box {
  position: relative;
  width: 100%;
  background: #000;
  border-radius: 16px;
  overflow: hidden;
  border: 2px solid var(--stroke-soft);
}
.video-box video, .video-box canvas, .video-box img { width: 100%; display: block; }
.video-box .frame-overlay {
  position: absolute;
  inset: 12% 12% 12% 12%;
  border: 2px solid var(--accent);
  border-radius: 14px;
  box-shadow: 0 0 0 9999px rgba(0,0,0,0.45);
  pointer-events: none;
  animation: pulse-border 2.2s infinite;
}
@keyframes pulse-border {
  0%, 100% { border-color: var(--accent); }
  50% { border-color: var(--success); box-shadow: 0 0 0 9999px rgba(0,0,0,0.45), 0 0 24px rgba(55,230,164,0.5); }
}

/* 队列 */
.queue-list {
  display: flex;
  gap: 10px;
  overflow-x: auto;
  padding-bottom: 6px;
}
.queue-item {
  flex-shrink: 0;
  width: 74px; height: 74px;
  border-radius: 12px;
  overflow: hidden;
  position: relative;
  border: 3px solid transparent;
  background: rgba(0,0,0,0.3);
  cursor: pointer;
  transition: all .2s;
}
.queue-item img { width: 100%; height: 100%; object-fit: cover; }
.queue-item.pending { border-color: var(--accent); }
.queue-item.completed { border-color: var(--success); opacity: .75; }
.queue-item.error { border-color: var(--danger); }
.queue-item .q-badge {
  position: absolute; top: 3px; right: 3px;
  width: 20px; height: 20px;
  border-radius: 50%;
  background: var(--accent);
  color: #000;
  font-size: 10px; font-weight: 800;
  display: flex; align-items: center; justify-content: center;
}
.queue-item.completed .q-badge { background: var(--success); }
.queue-item.error .q-badge { background: var(--danger); color: #fff; }

/* Toast */
.toast {
  position: fixed;
  bottom: 34px;
  left: 50%;
  transform: translateX(-50%) translateY(120px);
  background: rgba(16, 24, 46, 0.92);
  backdrop-filter: var(--blur);
  -webkit-backdrop-filter: var(--blur);
  border: 1px solid var(--stroke);
  color: var(--text);
  padding: 13px 28px;
  border-radius: 16px;
  font-size: 14px;
  z-index: 3000;
  opacity: 0;
  transition: all .35s cubic-bezier(.4,0,.2,1);
  max-width: 88%;
  text-align: center;
  box-shadow: 0 10px 40px rgba(0,0,0,0.45);
  pointer-events: none;
}
.toast.show { transform: translateX(-50%) translateY(0); opacity: 1; }
.toast.success { border-color: rgba(55, 230, 164, 0.4); color: var(--success); }
.toast.error { border-color: rgba(255, 93, 122, 0.4); color: var(--danger); }

/* 浮动消息 */
.float-msg {
  position: fixed;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  background: rgba(55, 230, 164, 0.95);
  color: #03120d;
  padding: 18px 30px;
  border-radius: 16px;
  font-size: 17px;
  font-weight: 700;
  z-index: 3500;
  box-shadow: 0 14px 46px rgba(55, 230, 164, 0.4);
  animation: floatUp 1.5s ease forwards;
  pointer-events: none;
  text-align: center;
  max-width: 80%;
  backdrop-filter: blur(10px);
}
.float-msg.err { background: rgba(255, 93, 122, 0.95); color: #fff; box-shadow: 0 14px 46px rgba(255,93,122,0.4); }
@keyframes floatUp {
  0% { opacity: 0; transform: translate(-50%, -40%) scale(.9); }
  15% { opacity: 1; transform: translate(-50%, -50%) scale(1); }
  80% { opacity: 1; }
  100% { opacity: 0; transform: translate(-50%, -70%) scale(.95); }
}

/* 危险区 */
.danger-zone {
  border: 1px solid rgba(255, 93, 122, 0.3);
  background: rgba(255, 93, 122, 0.05);
  border-radius: 16px;
  padding: 18px;
  margin-top: 20px;
}
.danger-zone .dz-title { font-size: 14px; font-weight: 700; color: var(--danger); margin-bottom: 10px; }

/* 提示小卡片 */
.tip-card {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  padding: 14px 16px;
  border-radius: 14px;
  background: rgba(77, 214, 255, 0.07);
  border: 1px solid rgba(77, 214, 255, 0.22);
  font-size: 13.5px;
  color: var(--text-dim);
  line-height: 1.7;
}
.tip-card .t-ico { font-size: 18px; flex-shrink: 0; }
.tip-card b { color: var(--accent); font-weight: 700; }
kbd {
  padding: 2px 7px;
  background: rgba(77, 214, 255, 0.15);
  border-radius: 6px;
  font-family: "SF Mono", Consolas, monospace;
  font-size: 12px;
  color: var(--accent);
  border: 1px solid rgba(77, 214, 255, 0.25);
}

/* 按钮组 */
.btn-group { display: flex; gap: 12px; flex-wrap: wrap; }
.btn-group .btn { flex: 1; min-width: 130px; }
.btn-group-center { justify-content: center; }

/* 加载动画 */
.spinner {
  display: inline-block;
  width: 16px; height: 16px;
  border: 2px solid rgba(255,255,255,0.25);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin .8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* 页脚 */
.footer {
  text-align: center;
  padding: 26px 20px 34px;
  color: var(--text-faint);
  font-size: 12.5px;
  border-top: 1px solid var(--stroke-soft);
  margin-top: 20px;
}
.footer b { color: var(--text-dim); }

/* SEO 可读文本（落地页内容块） */
.seo-note {
  color: var(--text-dim);
  font-size: 14px;
  line-height: 1.9;
}
.seo-note h2 { color: var(--text); font-size: 18px; margin: 18px 0 8px; }
.seo-note h3 { color: var(--text); font-size: 15px; margin: 14px 0 6px; }
.seo-note ul { padding-left: 20px; }
.seo-note li { margin-bottom: 6px; }

/* 顶部屏幕切换（分段控件） */
.seg {
  display: inline-flex;
  gap: 4px;
  background: rgba(0, 0, 0, 0.3);
  border: 1px solid var(--stroke);
  border-radius: 14px;
  padding: 4px;
}
.seg-btn {
  padding: 8px 16px;
  border: none;
  border-radius: 10px;
  background: transparent;
  color: var(--text-dim);
  font-size: 13.5px;
  font-weight: 600;
  font-family: var(--font);
  cursor: pointer;
  transition: all .25s ease;
  display: flex;
  align-items: center;
  gap: 6px;
}
.seg-btn.active {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #04101d;
  box-shadow: 0 4px 14px rgba(77, 214, 255, 0.3);
}
.nav-seg { display: flex; align-items: center; gap: 14px; }

/* 屏幕容器（两屏切换） */
.screen { display: none; }
.screen.active { display: block; animation: fadeIn .35s ease; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: none; } }

/* 便当盒 (Bento) 布局 */
.bento {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 20px;
  align-items: start;
}
.bento .glass { margin-bottom: 0; }
.bento .span-2 { grid-column: span 2; }
.bento .span-3 { grid-column: span 3; }
.bento .span-4 { grid-column: span 4; }
.bento .span-6 { grid-column: span 6; }
@media (max-width: 880px) {
  .bento { grid-template-columns: 1fr; }
  .bento .span-2, .bento .span-3, .bento .span-4, .bento .span-6 { grid-column: span 1; }
}

/* 播放屏双栏布局 */
.play-layout {
  display: grid;
  grid-template-columns: 1.55fr 1fr;
  gap: 20px;
  align-items: start;
}
.play-layout .glass { margin-bottom: 0; }
@media (max-width: 880px) {
  .play-layout { grid-template-columns: 1fr; }
}

/* 二维码图片悬浮区域（滚轮翻页仅在图片上方生效） */
.qr-wheel-area { position: relative; }

/* 响应式 */
@media (max-width: 640px) {
  .container { padding: 22px 14px 70px; }
  .glass { padding: 18px; border-radius: 18px; }
  .nav-links a { padding: 7px 10px; font-size: 13px; }
  .brand { font-size: 16px; }
  .btn { padding: 12px 18px; font-size: 14px; }
  .btn-group .btn { min-width: 100%; }
  .qr-frame { padding: 12px; }
}