/* ============================================================
   Nova Chain · 统一设计系统（量子玻璃 · Premium Web3）
   风格基准：Linear / Phantom Wallet / OpenSea / Rainbow / Stripe
   原则：秩序感 + 留白 + 细节精致，无霓虹堆砌
   ============================================================ */

:root {
  /* ---- 色彩系统 ---- */
  --bg: #0A0A0F;
  --surface: rgba(18, 18, 24, 0.8);
  --panel: rgba(18, 18, 24, 0.85);
  --panel2: rgba(255, 255, 255, 0.04);
  --panel3: rgba(255, 255, 255, 0.07);
  --border: rgba(255, 255, 255, 0.08);
  --border-strong: rgba(255, 255, 255, 0.14);
  --accent: #00F0FF;
  --accent2: #B44DFF;
  --text: #F5F5FA;
  --dim: #8A8A9C;
  --success: #4DFF88;
  --warning: #FFD166;
  --danger: #FF4D6A;

  /* ---- 圆角 ---- */
  --radius: 16px;
  --radius-sm: 12px;

  /* ---- 字体 ---- */
  --font: 'Inter', 'Noto Sans SC', 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', 'SF Mono', 'Consolas', ui-monospace, monospace;

  /* ---- 动效与阴影 ---- */
  --ease: cubic-bezier(0.4, 0, 0.2, 1);
  --shadow: 0 4px 24px rgba(0, 0, 0, 0.2);
  --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.32);
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  font-size: 14px;
  line-height: 1.5;
  letter-spacing: -0.01em;
  color: var(--text);
  background:
    radial-gradient(1100px 680px at 50% -10%, rgba(0, 240, 255, 0.055), transparent 62%),
    radial-gradient(820px 600px at 92% 8%, rgba(180, 77, 255, 0.045), transparent 55%),
    var(--bg);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

::selection { background: rgba(0, 240, 255, 0.26); color: var(--text); }

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

h1, h2, h3, h4 { letter-spacing: -0.02em; line-height: 1.25; color: var(--text); }
h1 { font-size: clamp(24px, 3vw, 30px); font-weight: 800; }
h2 { font-size: 20px; font-weight: 700; }
h3 { font-size: 16px; font-weight: 600; }
h4 { font-size: 14px; font-weight: 600; }

::-webkit-scrollbar { width: 10px; height: 8px; }
::-webkit-scrollbar-thumb { background: rgba(255, 255, 255, 0.12); border-radius: 999px; }
::-webkit-scrollbar-thumb:hover { background: rgba(255, 255, 255, 0.2); }
::-webkit-scrollbar-track { background: transparent; }

/* ============================================================
   应用外壳：顶栏 + 桌面侧边栏 + 移动端底部导航
   ============================================================ */
.nav-shell .page { margin-left: 64px; }

.topbar {
  position: sticky;
  top: 0;
  z-index: 60;
  height: 56px;
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 0 20px;
  background: rgba(10, 10, 15, 0.92);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(24px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 15px;
  letter-spacing: -0.01em;
  color: var(--text);
  white-space: nowrap;
}

.brand .logo {
  width: 28px;
  height: 28px;
  border-radius: 9px;
  display: grid;
  place-items: center;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  color: #04101b;
  font-size: 14px;
  font-weight: 800;
  box-shadow: 0 0 14px rgba(0, 240, 255, 0.22);
}

.net-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--panel2);
  color: var(--dim);
  font-size: 12px;
  font-weight: 600;
  white-space: nowrap;
}

.net-pill .dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--dim);
  flex-shrink: 0;
}

.net-pill.node .dot { background: var(--success); box-shadow: 0 0 8px rgba(77, 255, 136, 0.55); }
.net-pill.demo .dot { background: var(--warning); box-shadow: 0 0 8px rgba(255, 209, 102, 0.45); }
.net-pill .net-name { font-family: var(--font-mono); font-size: 11px; }

.wallet-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 13px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--panel2);
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 12px;
  white-space: nowrap;
  cursor: pointer;
  transition: border-color 0.2s var(--ease), background 0.2s var(--ease);
}

.wallet-chip:hover { border-color: rgba(0, 240, 255, 0.35); background: var(--panel3); }
.wallet-chip .dot { width: 7px; height: 7px; border-radius: 50%; background: var(--dim); flex-shrink: 0; }
.wallet-chip.connected .dot { background: var(--success); box-shadow: 0 0 8px rgba(77, 255, 136, 0.55); }
.wallet-chip .chip-bal { color: var(--accent); font-weight: 700; }
/* ---- 语言切换 ---- */
.lang-switch {
  display: inline-flex;
  align-items: center;
  gap: 2px;
  padding: 3px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--panel2);
  flex-shrink: 0;
}

.lang-switch .lang-opt {
  border: 0;
  background: transparent;
  color: var(--dim);
  font-size: 11px;
  font-weight: 600;
  line-height: 1;
  padding: 5px 9px;
  border-radius: 999px;
  cursor: pointer;
  font-family: inherit;
  transition: color 0.2s var(--ease), background 0.2s var(--ease);
}

.lang-switch .lang-opt:hover { color: var(--text); }
.lang-switch .lang-opt.active { color: var(--text); background: var(--panel3); box-shadow: inset 0 0 0 1px var(--border); }



/* ---- 桌面侧边栏：64px 图标栏，悬停展开标签 ---- */
.sidebar {
  position: fixed;
  top: 0;
  bottom: 0;
  left: 0;
  z-index: 70;
  width: 64px;
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: 12px 8px 16px;
  overflow-x: hidden;
  overflow-y: auto;
  background: rgba(10, 10, 15, 0.92);
  border-right: 1px solid var(--border);
  backdrop-filter: blur(24px);
  transition: width 0.2s var(--ease);
  scrollbar-width: none;
}

.sidebar::-webkit-scrollbar { display: none; }
.sidebar:hover { width: 180px; }

.sidebar .side-sep {
  height: 1px;
  margin: 8px 6px;
  background: var(--border);
  flex-shrink: 0;
}

.sidebar .nav-link {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 10px;
  border-radius: var(--radius-sm);
  color: var(--dim);
  font-size: 13px;
  font-weight: 500;
  white-space: nowrap;
  position: relative;
  transition: color 0.2s var(--ease), background 0.2s var(--ease), box-shadow 0.2s var(--ease);
}

.sidebar .nav-link .nav-icon {
  width: 20px;
  text-align: center;
  flex-shrink: 0;
  font-size: 15px;
  line-height: 1;
  filter: saturate(0.35) contrast(1.1);
  transition: filter 0.2s var(--ease);
}

.sidebar .nav-link .nav-label { opacity: 0; transition: opacity 0.2s var(--ease); }
.sidebar:hover .nav-link .nav-label { opacity: 1; }

.sidebar .nav-link:hover { color: var(--text); background: var(--panel3); }
.sidebar .nav-link:hover .nav-icon { filter: saturate(0.8); }

.sidebar .nav-link.active {
  color: var(--accent);
  background: rgba(0, 240, 255, 0.09);
  box-shadow: inset 0 0 0 1px rgba(0, 240, 255, 0.22), 0 0 16px rgba(0, 240, 255, 0.08);
}

.sidebar .nav-link.active .nav-icon { filter: none; }

/* ---- 移动端底部导航 ---- */
.bottom-nav {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 70;
  display: none;
  justify-content: space-around;
  padding: 6px 10px calc(6px + env(safe-area-inset-bottom));
  background: rgba(10, 10, 15, 0.92);
  border-top: 1px solid var(--border);
  backdrop-filter: blur(24px);
}

.bottom-nav .bn-item {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 3px;
  padding: 7px 0 5px;
  border-radius: var(--radius-sm);
  color: var(--dim);
  font-size: 11px;
  font-weight: 500;
  transition: color 0.2s var(--ease), background 0.2s var(--ease);
}

.bottom-nav .bn-item .bn-icon { font-size: 18px; line-height: 1; filter: saturate(0.35) contrast(1.1); }
.bottom-nav .bn-item.active { color: var(--accent); background: rgba(0, 240, 255, 0.08); }
.bottom-nav .bn-item.active .bn-icon { filter: none; }

/* ============================================================
   布局
   ============================================================ */
.page { max-width: 880px; margin: 0 auto; padding: 32px 24px 96px; }

.hero { display: flex; flex-direction: column; gap: 10px; padding: 28px 0 24px; }

.eyebrow {
  align-self: flex-start;
  padding: 5px 12px;
  border-radius: 999px;
  background: rgba(0, 240, 255, 0.08);
  border: 1px solid rgba(0, 240, 255, 0.22);
  color: var(--accent);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.sub { color: var(--dim); font-size: 14px; line-height: 1.65; max-width: 640px; }

.section-title {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 20px;
  font-weight: 700;
  margin: 36px 0 16px;
}

.section-title::after {
  content: '';
  flex: 1;
  height: 1px;
  background: linear-gradient(90deg, var(--border), transparent);
}

.section-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  margin: 36px 0 16px;
}

.section-head .section-title { margin: 0; }

/* ============================================================
   按钮
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 16px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--panel2);
  color: var(--text);
  font-family: inherit;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  white-space: nowrap;
  transition: transform 0.2s var(--ease), opacity 0.2s var(--ease),
    border-color 0.2s var(--ease), background 0.2s var(--ease), box-shadow 0.2s var(--ease);
}

.btn:hover { transform: scale(0.98); opacity: 0.92; }
.btn:active { transform: scale(0.96); }
.btn:disabled { opacity: 0.4; cursor: not-allowed; transform: none; }

.btn.primary {
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  color: #04101b;
  border: none;
  box-shadow: 0 8px 24px rgba(0, 240, 255, 0.18);
}

.btn.success {
  background: linear-gradient(135deg, #12b877, var(--success));
  color: #04141b;
  border: none;
}

.btn.danger {
  color: var(--danger);
  border-color: rgba(255, 77, 106, 0.35);
  background: rgba(255, 77, 106, 0.06);
}

.btn.small { padding: 6px 12px; font-size: 12px; }
.btn.block { width: 100%; }

/* ============================================================
   表单
   ============================================================ */
.field { display: flex; flex-direction: column; gap: 6px; margin-bottom: 14px; }
.field label { color: var(--dim); font-size: 12px; font-weight: 600; }

.field input,
.field select,
.field textarea,
.search {
  width: 100%;
  background: rgba(10, 10, 15, 0.6);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  padding: 10px 14px;
  font-family: inherit;
  font-size: 14px;
  outline: none;
  transition: border-color 0.2s var(--ease), box-shadow 0.2s var(--ease);
}

.field input:focus,
.field select:focus,
.field textarea:focus,
.search:focus {
  border-color: rgba(0, 240, 255, 0.5);
  box-shadow: 0 0 0 3px rgba(0, 240, 255, 0.12);
}

.field textarea { min-height: 110px; resize: vertical; line-height: 1.6; }
.search { flex: 1; min-width: 180px; }

/* ============================================================
   卡片与网格
   ============================================================ */
.grid { display: grid; gap: 16px; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); }
.grid-auto { grid-template-columns: repeat(auto-fill, minmax(210px, 1fr)); }

.card {
  position: relative;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: rgba(18, 18, 24, 0.85);
  backdrop-filter: blur(12px);
  box-shadow: var(--shadow);
  padding: 20px;
  transition: transform 0.2s var(--ease), border-color 0.2s var(--ease), box-shadow 0.2s var(--ease);
}

.card:hover {
  transform: translateY(-2px);
  border-color: rgba(0, 240, 255, 0.2);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.28);
}

.app-card { display: flex; flex-direction: column; gap: 12px; min-height: 210px; }

.app-icon {
  width: 48px;
  height: 48px;
  border-radius: 14px;
  display: grid;
  place-items: center;
  font-size: 24px;
  background: linear-gradient(135deg, rgba(0, 240, 255, 0.1), rgba(180, 77, 255, 0.14));
  border: 1px solid var(--border);
}

.app-card h3 { font-size: 16px; }
.app-card p { color: var(--dim); font-size: 13px; line-height: 1.6; flex: 1; }
.app-card .meta { display: flex; gap: 8px; flex-wrap: wrap; }

.tag,
.pill {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 500;
  color: var(--dim);
  background: var(--panel2);
  border: 1px solid var(--border);
}

.tag.live,
.pill.on { color: var(--success); border-color: rgba(77, 255, 136, 0.32); background: rgba(77, 255, 136, 0.07); }
.tag.hot { color: var(--warning); border-color: rgba(255, 209, 102, 0.32); background: rgba(255, 209, 102, 0.07); }
.tag.nft { color: var(--accent2); border-color: rgba(180, 77, 255, 0.35); background: rgba(180, 77, 255, 0.08); }
.tag.active { color: var(--accent); border-color: rgba(0, 240, 255, 0.45); background: rgba(0, 240, 255, 0.1); }

/* ---- 统计 ---- */
.stat-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)); gap: 12px; }

.stat {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  background: rgba(18, 18, 24, 0.85);
  box-shadow: var(--shadow);
}

.stat .num {
  font-family: var(--font-mono);
  font-size: 22px;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: -0.02em;
}

.stat .label { color: var(--dim); font-size: 12px; margin-top: 4px; }

/* ---- 媒体卡片 ---- */
.media-card { overflow: hidden; display: flex; flex-direction: column; }

.media-card .cover {
  position: relative;
  height: 150px;
  border-radius: var(--radius-sm);
  margin-bottom: 12px;
  display: grid;
  place-items: center;
  font-size: 44px;
  background: linear-gradient(140deg, rgba(0, 240, 255, 0.09), rgba(180, 77, 255, 0.13));
  border: 1px solid var(--border);
  overflow: hidden;
}

.media-card .cover .play {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  background: rgba(10, 10, 15, 0.4);
  opacity: 0;
  transition: opacity 0.2s var(--ease);
  font-size: 30px;
}

.media-card:hover .cover .play { opacity: 1; }
.media-card h3 { font-size: 15px; margin-bottom: 4px; }
.media-card .by { color: var(--dim); font-size: 12px; margin-bottom: 8px; }
.media-card .actions { display: flex; gap: 8px; margin-top: auto; padding-top: 10px; flex-wrap: wrap; }

.row-info { display: flex; justify-content: space-between; align-items: center; color: var(--dim); font-size: 12px; gap: 8px; }
.price { color: var(--accent); font-family: var(--font-mono); font-weight: 600; }

/* ---- NFT / 艺术块 ---- */
.art-tile {
  width: 100%;
  aspect-ratio: 1;
  border-radius: var(--radius);
  display: grid;
  place-items: center;
  font-size: 64px;
  border: 1px solid var(--border);
  background:
    radial-gradient(circle at 30% 25%, rgba(0, 240, 255, 0.15), transparent 55%),
    radial-gradient(circle at 75% 70%, rgba(180, 77, 255, 0.17), transparent 55%),
    linear-gradient(140deg, #0d0d13, #16161e);
  user-select: none;
}

/* ============================================================
   表格 / 列表 / 标签页
   ============================================================ */
.tbl { width: 100%; border-collapse: collapse; font-size: 13px; }
.tbl th { text-align: left; color: var(--dim); font-weight: 600; padding: 10px 12px; border-bottom: 1px solid var(--border); }
.tbl td { padding: 10px 12px; border-bottom: 1px solid rgba(255, 255, 255, 0.05); }
.tbl tr:hover td { background: rgba(255, 255, 255, 0.02); }

.tier-table { width: 100%; border-collapse: collapse; margin-top: 6px; }
.tier-table th, .tier-table td { border: 1px solid var(--border); padding: 8px 10px; font-size: 13px; text-align: left; }
.tier-table th { color: var(--dim); font-weight: 600; }

.list-row {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--panel2);
  margin-bottom: 10px;
}

.list-row .rank { font-family: var(--font-mono); font-weight: 700; color: var(--accent2); width: 34px; }
.list-row .grow { flex: 1; min-width: 0; }
.list-row .grow .t { font-weight: 600; }
.list-row .grow .d { color: var(--dim); font-size: 12px; }

.tabs { display: flex; gap: 6px; flex-wrap: wrap; margin-bottom: 18px; }

.tab-btn {
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--panel2);
  color: var(--dim);
  font-family: inherit;
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s var(--ease);
}

.tab-btn:hover { color: var(--text); border-color: var(--border-strong); }
.tab-btn.active {
  color: var(--accent);
  background: rgba(0, 240, 255, 0.09);
  border-color: rgba(0, 240, 255, 0.35);
  font-weight: 600;
}

.tab-panel { display: none; }
.tab-panel.active { display: block; }

/* ============================================================
   弹窗 / 提示
   ============================================================ */
.modal-mask {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: grid;
  place-items: center;
  background: rgba(5, 5, 8, 0.72);
  backdrop-filter: blur(8px);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s var(--ease);
  padding: 20px;
}

.modal-mask.open { opacity: 1; pointer-events: auto; }

.modal {
  width: min(640px, 100%);
  max-height: 86vh;
  overflow-y: auto;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: rgba(18, 18, 24, 0.96);
  box-shadow: var(--shadow-lg);
  padding: 24px;
  transform: translateY(14px) scale(0.98);
  transition: transform 0.2s var(--ease);
}

.modal-mask.open .modal { transform: none; }
.modal h3 { margin-bottom: 12px; }
.modal .modal-body { color: var(--dim); font-size: 14px; line-height: 1.7; }
.modal .modal-actions { display: flex; gap: 10px; margin-top: 20px; flex-wrap: wrap; justify-content: flex-end; }
.modal .close-x { position: sticky; float: right; top: 0; background: none; border: none; color: var(--dim); font-size: 20px; cursor: pointer; }

.toast-wrap { position: fixed; bottom: 22px; right: 22px; z-index: 200; display: flex; flex-direction: column; gap: 10px; }

.toast {
  min-width: 240px;
  max-width: 380px;
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: rgba(18, 18, 24, 0.96);
  color: var(--text);
  font-size: 13px;
  box-shadow: var(--shadow-lg);
  animation: toast-in 0.25s var(--ease);
}

.toast.ok { border-color: rgba(77, 255, 136, 0.45); }
.toast.ok::before { content: '✓ '; color: var(--success); font-weight: 700; }
.toast.err { border-color: rgba(255, 77, 106, 0.5); }
.toast.info { border-color: rgba(0, 240, 255, 0.45); }

@keyframes toast-in { from { opacity: 0; transform: translateY(12px); } to { opacity: 1; transform: none; } }

/* ============================================================
   动态流 / 聊天 / 直播
   ============================================================ */
.post {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: rgba(18, 18, 24, 0.85);
  padding: 18px;
  margin-bottom: 14px;
}

.post .post-head { display: flex; align-items: center; gap: 12px; margin-bottom: 10px; }

.avatar {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  font-size: 17px;
  background: linear-gradient(135deg, rgba(0, 240, 255, 0.16), rgba(180, 77, 255, 0.2));
  border: 1px solid var(--border);
  flex-shrink: 0;
}

.post .name { font-weight: 600; font-size: 14px; }
.post .when { color: var(--dim); font-size: 12px; }
.post .content { font-size: 14px; line-height: 1.7; margin-bottom: 10px; white-space: pre-wrap; word-break: break-word; }
.post .post-actions { display: flex; gap: 16px; color: var(--dim); font-size: 13px; }
.post .post-actions button { background: none; border: none; color: var(--dim); cursor: pointer; font-size: 13px; padding: 2px 6px; border-radius: 8px; }
.post .post-actions button:hover { color: var(--accent); background: rgba(255, 255, 255, 0.05); }
.post .post-actions button.liked { color: var(--accent2); }

.chat-panel {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: rgba(18, 18, 24, 0.85);
  display: flex;
  flex-direction: column;
  height: 100%;
  min-height: 420px;
  overflow: hidden;
}

.chat-head {
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
  font-weight: 600;
  font-size: 14px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.chat-body {
  flex: 1;
  overflow-y: auto;
  padding: 14px 16px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  font-size: 13px;
}

.chat-msg { line-height: 1.5; }
.chat-msg .who { color: var(--accent); font-weight: 600; margin-right: 6px; }
.chat-msg .who.system { color: var(--warning); }

.chat-input { display: flex; gap: 8px; padding: 12px; border-top: 1px solid var(--border); }
.chat-input input { flex: 1; }

.gift-row { display: flex; gap: 8px; flex-wrap: wrap; padding: 10px 12px; border-top: 1px solid var(--border); }

.gift-btn {
  border: 1px solid var(--border);
  background: var(--panel2);
  color: var(--text);
  border-radius: 999px;
  padding: 6px 12px;
  font-size: 12px;
  cursor: pointer;
  transition: border-color 0.2s var(--ease), color 0.2s var(--ease);
}

.gift-btn:hover { border-color: var(--warning); color: var(--warning); }

/* ============================================================
   舞台 / 视频
   ============================================================ */
.stage-wrap {
  position: relative;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  background: #0b0b10;
  min-height: 420px;
}

.stage-wrap canvas { position: absolute; inset: 0; width: 100%; height: 100%; }

.stage-overlay {
  position: relative;
  z-index: 2;
  padding: 18px;
  display: flex;
  flex-direction: column;
  min-height: 420px;
  justify-content: flex-end;
  pointer-events: none;
}

.stage-overlay > * { pointer-events: auto; }
.stage-info { background: rgba(10, 10, 15, 0.6); border: 1px solid var(--border); border-radius: var(--radius); padding: 14px; backdrop-filter: blur(8px); }

.video-screen {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  overflow: hidden;
  background: #0b0b10;
}

.video-screen canvas { position: absolute; inset: 0; width: 100%; height: 100%; }

.player-bar {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: rgba(18, 18, 24, 0.85);
  margin-top: 14px;
  flex-wrap: wrap;
}

.now-playing { flex: 1; min-width: 180px; }
.now-playing .np-title { font-weight: 600; }
.now-playing .np-artist { color: var(--dim); font-size: 12px; }

.eq { display: flex; align-items: flex-end; gap: 3px; height: 22px; }
.eq span { width: 4px; border-radius: 2px; background: var(--accent); animation: eq 0.9s ease-in-out infinite; }
.eq span:nth-child(2) { animation-delay: 0.2s; }
.eq span:nth-child(3) { animation-delay: 0.4s; }
.eq span:nth-child(4) { animation-delay: 0.1s; }
.eq.paused span { animation-play-state: paused; height: 4px; }

@keyframes eq { 0%, 100% { height: 4px; } 50% { height: 22px; } }

/* ============================================================
   工具类
   ============================================================ */
.mono { font-family: var(--font-mono); }
.dim { color: var(--dim); }
.ok { color: var(--success); }
.warn { color: var(--warning); }
.err { color: var(--danger); }
.center { text-align: center; }
.row { display: flex; gap: 12px; align-items: center; flex-wrap: wrap; }
.spacer { flex: 1; }
.mt { margin-top: 14px; }
.mb { margin-bottom: 14px; }
.hint { margin-top: 10px; font-size: 12px; color: var(--dim); }

.err-box {
  border: 1px solid rgba(255, 77, 106, 0.35);
  background: rgba(255, 77, 106, 0.07);
  color: #ff8fa3;
  border-radius: var(--radius-sm);
  padding: 12px 14px;
  font-size: 13px;
  line-height: 1.6;
  margin-bottom: 12px;
}

.empty {
  border: 1px dashed var(--border-strong);
  border-radius: var(--radius);
  padding: 40px 20px;
  text-align: center;
  color: var(--dim);
}

.ticket {
  border: 1px dashed rgba(180, 77, 255, 0.4);
  border-radius: var(--radius);
  padding: 20px;
  background: linear-gradient(135deg, rgba(180, 77, 255, 0.1), rgba(0, 240, 255, 0.08));
  font-family: var(--font-mono);
}

.progress { height: 6px; border-radius: 999px; background: rgba(255, 255, 255, 0.07); overflow: hidden; }
.progress > div { height: 100%; border-radius: 999px; background: linear-gradient(90deg, var(--accent), var(--accent2)); transition: width 0.4s var(--ease); }

/* ---- 骨架屏（shimmer）---- */
.shimmer {
  display: block;
  height: 14px;
  border-radius: var(--radius-sm);
  background: linear-gradient(90deg, rgba(255, 255, 255, 0.05) 25%, rgba(255, 255, 255, 0.12) 37%, rgba(255, 255, 255, 0.05) 63%);
  background-size: 400% 100%;
  animation: shimmer 1.4s ease infinite;
}

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

/* ---- 页面过渡：淡入 + 轻微上移 ---- */
.page { animation: page-in 0.15s var(--ease); }

@keyframes page-in {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: none; }
}

/* ============================================================
   响应式
   ============================================================ */
@media (max-width: 1023px) {
  .sidebar { display: none; }
  .bottom-nav { display: flex; }
  .nav-shell .page { margin-left: 0; }
}

@media (max-width: 900px) {
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 640px) {
  .grid-2, .grid-3 { grid-template-columns: 1fr; }
  .page { padding: 24px 16px 100px; }
  .topbar { padding: 0 12px; }
  .brand .brand-name { display: none; }
  .net-pill { display: none; }
  .wallet-chip .chip-bal { display: none; }
}