/* ═══════════════════════════════════════
   量子 AI · QUANTUM AGENT · Shared Styles
   ═══════════════════════════════════════ */
:root {
  --bg: #050b15;
  --bg-2: #08111e;
  --panel: #0d1624;
  --panel-2: #111c2c;
  --panel-3: #172438;
  --border: #1c2b40;
  --border-strong: #26384f;
  --text: #c5cfda;
  --text-warm: #ecdcb8;
  --text-muted: #8ea0b0;
  --text-dim: #556676;
  --text-cool: #a8c5d4;
  --accent: #f5b942;
  --accent-dim: rgba(245,185,66,0.14);
  --tech: #5eead4;
  --tech-dim: rgba(94,234,212,0.14);
  --up: #22c55e;
  --down: #ef4444;
  --candle-up: #26a69a;
  --candle-down: #ef5350;
  --font-mono: 'JetBrains Mono', 'SF Mono', Consolas, 'Roboto Mono', ui-monospace, monospace;
  --font-sans: -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Microsoft YaHei', 'Segoe UI', system-ui, sans-serif;
}
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 15px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
  padding-bottom: env(safe-area-inset-bottom);
}
.num { font-family: var(--font-mono); font-variant-numeric: tabular-nums; }
.label {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--text-muted);
  font-weight: 500;
}
.label.tech { color: var(--tech); }
.label.amber { color: var(--accent); }
a { color: inherit; text-decoration: none; }

/* AMBIENT BG */
.ambient {
  position: fixed; inset: 0; z-index: 0; pointer-events: none;
  background:
    radial-gradient(1200px 700px at 20% -10%, rgba(94,234,212,0.045), transparent 60%),
    radial-gradient(900px 600px at 90% 5%, rgba(245,185,66,0.05), transparent 60%);
}
.grid-overlay {
  position: fixed; inset: 0; z-index: 0; pointer-events: none;
  background-image:
    linear-gradient(rgba(94,234,212,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(94,234,212,0.03) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(ellipse at 50% 0%, black 40%, transparent 80%);
  -webkit-mask-image: radial-gradient(ellipse at 50% 0%, black 40%, transparent 80%);
}

.page {
  position: relative; z-index: 1;
  max-width: 1280px;
  margin: 0 auto;
  padding: 14px 28px 96px;
}

/* ═══ TOP BAR ═══ */
.top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 18px;
  gap: 16px;
}
.brand {
  display: flex; align-items: center; gap: 14px;
  flex-shrink: 0;
}
.brand-mark {
  width: 40px; height: 40px;
  position: relative;
  display: grid; place-items: center;
}
.brand-mark svg { width: 100%; height: 100%; }
.brand-mark::after {
  content: '';
  position: absolute; inset: -4px;
  border: 1px solid var(--tech);
  border-radius: 50%;
  opacity: 0.3;
  animation: pulseRing 3s ease-in-out infinite;
}
@keyframes pulseRing {
  0%, 100% { transform: scale(1); opacity: 0.25; }
  50% { transform: scale(1.15); opacity: 0.05; }
}
.brand-text .name {
  font-family: var(--font-mono);
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 0.06em;
  line-height: 1;
  background: linear-gradient(135deg, #f5b942 0%, #f5b942 30%, #5eead4 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}
.brand-text .sub {
  font-size: 10.5px;
  color: var(--text-muted);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  font-family: var(--font-mono);
  margin-top: 4px;
}
.top-nav {
  display: flex; gap: 4px;
}
.nav-item {
  padding: 8px 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  text-transform: uppercase;
  border: 1px solid transparent;
  transition: color .15s ease, border-color .15s ease, background .15s ease;
}
.nav-item:hover { color: var(--text); }
.nav-item.active {
  color: var(--tech);
  border-color: var(--border-strong);
  background: var(--panel);
}
.top-meta {
  display: flex; align-items: center; gap: 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-muted);
  letter-spacing: 0.06em;
}

/* Language switcher · 精致地球图标 + 弹出菜单 */
.lang-switcher {
  position: relative;
  display: inline-block;
}
.lang-trigger {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 12px 7px 10px;
  background: var(--panel-2);
  border: 1px solid var(--border);
  color: var(--text-warm);
  font-family: 'PingFang SC', 'Microsoft YaHei', system-ui, sans-serif;
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.04em;
  cursor: pointer;
  transition: all .15s ease;
}
.lang-trigger:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--panel-3);
}
.lang-trigger svg { width: 14px; height: 14px; stroke: currentColor; fill: none; stroke-width: 1.6; }
.lang-trigger .caret {
  display: inline-block;
  width: 6px; height: 6px;
  border-right: 1.5px solid currentColor;
  border-bottom: 1.5px solid currentColor;
  transform: rotate(45deg) translate(-2px, -2px);
  transition: transform .15s ease;
  margin-left: 2px;
}
.lang-switcher.open .lang-trigger .caret {
  transform: rotate(-135deg) translate(-2px, -2px);
}
.lang-menu {
  position: absolute;
  top: calc(100% + 6px);
  right: 0;
  min-width: 140px;
  background: var(--panel);
  border: 1px solid var(--border-strong);
  padding: 4px;
  z-index: 100;
  opacity: 0;
  transform: translateY(-6px);
  pointer-events: none;
  transition: opacity .18s ease, transform .18s ease;
  box-shadow: 0 8px 32px rgba(0,0,0,0.4);
}
.lang-switcher.open .lang-menu {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}
.lang-btn {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  width: 100%;
  background: transparent;
  border: none;
  padding: 9px 12px;
  color: var(--text-warm);
  font-family: 'PingFang SC', 'Microsoft YaHei', system-ui, sans-serif;
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  text-align: left;
  transition: color .12s ease, background .12s ease;
  letter-spacing: 0.02em;
}
.lang-btn:hover { color: var(--accent); background: var(--panel-2); }
.lang-btn .lang-code {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.16em;
  color: var(--text-dim);
  text-transform: uppercase;
}
.lang-btn.on {
  color: var(--accent);
  background: var(--accent-dim);
}
.lang-btn.on .lang-code { color: var(--accent); }
.lang-btn.on::before {
  content: '◇';
  color: var(--accent);
  font-size: 10px;
  margin-right: 6px;
  vertical-align: middle;
}
@media (max-width: 600px) {
  .lang-trigger { padding: 6px 10px; font-size: 11px; }
  .lang-menu { min-width: 130px; right: auto; left: 0; }
  .lang-btn { padding: 8px 10px; font-size: 12.5px; }
}
.live-badge {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 6px 12px;
  background: var(--panel);
  border: 1px solid var(--border);
  color: var(--tech);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
}

/* 通用 SVG 图标 · 章节标题 / 卡片装饰 */
.sec-icon {
  display: inline-flex; align-items:center; justify-content:center;
  width: 20px; height: 20px;
  color: var(--tech);
  flex-shrink: 0;
  margin-right: 3px;
}
.sec-icon svg { width: 100%; height: 100%; }
.sec-icon.amber { color: var(--accent); }

.sec-head h2, .feed-head h3 {
  display: inline-flex; align-items: center; gap: 9px;
}
.sec-head h2::before, .feed-head h3::before {
  content: '';
  display: inline-block;
  width: 3px; height: 14px;
  background: var(--tech);
  border-radius: 2px;
  box-shadow: 0 0 6px rgba(94,234,212,0.5);
}
.feed-head { display: flex; align-items: center; justify-content: space-between; }

/* TradingView Single Ticker widget · 顶部实时价格 */
.tv-ticker {
  display: inline-flex;
  align-items: center;
  width: 200px;
  height: 70px;
  overflow: hidden;
  border-radius: 6px;
}
.tv-ticker .tradingview-widget-container,
.tv-ticker .tradingview-widget-container__widget {
  width: 100%;
  height: 100%;
}
@media (max-width: 600px) {
  .tv-ticker { width: 160px; height: 60px; }
}

/* 实时价格徽章 (deprecated, 保留兼容) */
.eth-price {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 11px;
  background: var(--panel);
  border: 1px solid var(--border);
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 12px;
  font-weight: 600;
  color: var(--text-warm);
  letter-spacing: 0.02em;
  transition: color .28s ease, border-color .28s ease, background .28s ease;
  min-width: 118px;
  justify-content: center;
}
.eth-price .lbl {
  font-size: 10px;
  color: var(--text-dim);
  font-weight: 500;
  letter-spacing: 0.08em;
}
.eth-price .arrow {
  font-size: 10px;
  margin-left: 2px;
  transition: color .28s ease;
}
.eth-price.up {
  color: var(--up);
  border-color: rgba(34,197,94,0.35);
  background: rgba(34,197,94,0.06);
}
.eth-price.down {
  color: var(--down);
  border-color: rgba(239,68,68,0.35);
  background: rgba(239,68,68,0.06);
}
.eth-price.flash-up { animation: flashUp 0.55s ease; }
.eth-price.flash-down { animation: flashDown 0.55s ease; }
@keyframes flashUp {
  0%, 100% { box-shadow: none; }
  40% { box-shadow: 0 0 0 3px rgba(34,197,94,0.35), 0 0 16px rgba(34,197,94,0.35); }
}
@keyframes flashDown {
  0%, 100% { box-shadow: none; }
  40% { box-shadow: 0 0 0 3px rgba(239,68,68,0.35), 0 0 16px rgba(239,68,68,0.35); }
}
@media (max-width: 600px) {
  .eth-price { padding: 5px 9px; font-size: 11px; min-width: 100px; }
  .eth-price .lbl { display: none; }
}
.live-badge .dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--up);
  box-shadow: 0 0 0 0 rgba(34,197,94,0.5);
  animation: pulse-dot 1.8s ease-in-out infinite;
}
@keyframes pulse-dot {
  0%, 100% { box-shadow: 0 0 0 0 rgba(34,197,94,0.55); }
  50% { box-shadow: 0 0 0 8px rgba(34,197,94,0); }
}

/* ═══ MOBILE BOTTOM NAV ═══ */
.mobile-nav {
  display: none;
  position: fixed;
  bottom: 0; left: 0; right: 0;
  z-index: 100;
  background: rgba(6,9,14,0.94);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-top: 1px solid var(--border);
  padding: 8px 0 calc(8px + env(safe-area-inset-bottom));
}
.mobile-nav-inner {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  max-width: 500px;
  margin: 0 auto;
}
.mnav-item {
  display: flex; flex-direction: column; align-items: center; gap: 4px;
  padding: 6px 4px;
  color: var(--text-dim);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.06em;
}
.mnav-item svg { width: 22px; height: 22px; }
.mnav-item.active { color: var(--tech); }

/* ═══ CARDS ═══ */
.card {
  background: var(--panel);
  border: 1px solid var(--border);
  padding: 22px 24px 20px;
}
.sec-head {
  display: flex; align-items: baseline; justify-content: space-between;
  margin: 0 0 14px;
  gap: 12px;
}
.sec-head h2 {
  margin: 0;
  font-size: 12px;
  font-family: var(--font-mono);
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--text-warm);
  font-weight: 600;
}
.sec-head h2::before {
  content: '◇';
  color: var(--accent);
  margin-right: 8px;
  font-size: 10px;
  opacity: 0.85;
}
.sec-head .note {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-dim);
  letter-spacing: 0.06em;
}

/* ═══ FOOTER ═══ */
.footer {
  margin-top: 48px;
  padding-top: 22px;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 10.5px;
  color: var(--text-dim);
  letter-spacing: 0.06em;
  flex-wrap: wrap;
  gap: 12px;
}
.footer .agent-sig {
  display: inline-flex; align-items: center; gap: 8px;
  color: var(--tech);
}

/* ═══ RESPONSIVE ═══ */
@media (max-width: 960px) {
  .page { padding: 20px 18px 100px; }
  .top { flex-wrap: wrap; gap: 14px; padding-bottom: 18px; margin-bottom: 24px; }
  .top-nav { display: none; }
  .brand-text .name { font-size: 16px; }
  .brand-text .sub { font-size: 9.5px; }
  .top-meta { gap: 12px; font-size: 10.5px; }
  .live-badge { padding: 5px 10px; font-size: 10.5px; }
  .mobile-nav { display: block; }
  .card { padding: 18px 18px 16px; }
  .sec-head h2 { font-size: 11px; }
  .sec-head .note { font-size: 10.5px; }
}
@media (max-width: 600px) {
  .page { padding: 14px 14px 96px; }
  body { font-size: 14px; }
  .brand-mark { width: 32px; height: 32px; }
  .brand-text .name { font-size: 15px; }
  .brand-text .sub { display: none; }
  .footer { flex-direction: column; align-items: flex-start; gap: 8px; font-size: 10px; }
  /* 顶栏: 品牌单独一行, 功能键换行排整齐, 别挤 */
  .top { gap: 10px; padding-bottom: 14px; margin-bottom: 18px; }
  .top-meta { width: 100%; gap: 8px; row-gap: 8px; justify-content: flex-start; flex-wrap: wrap; }
  #clock { display: none; }                    /* 日期时钟手机隐藏, 去噪 */
  .eth-price { padding: 5px 9px; font-size: 11px; }
  .live-badge { padding: 4px 9px; font-size: 10px; }
  /* 卡片/区块之间多留白, 不拥挤 */
  .card { padding: 16px 15px 15px; margin-bottom: 16px; }
  section, .card { margin-bottom: 16px; }
  .sec-head { margin-bottom: 12px; }
  /* 数字/网格 2 列, 间距舒展 */
  .metrics-strip { gap: 10px; }
  .metric { padding: 12px 12px; }
  .metric-value { font-size: 20px; }
  .metric-label { font-size: 11px; margin-top: 4px; }
}

/* ═══ 货币切换器 (复用 lang-switcher 样式) ═══ */
.ccy-switcher { position: relative; display: inline-block; margin-left: 8px; }
.ccy-trigger { display: inline-flex; align-items: center; gap: 6px; padding: 7px 12px 7px 10px; background: var(--panel-2); border: 1px solid var(--border); color: var(--text-warm); font-family: 'PingFang SC', 'Microsoft YaHei', system-ui, sans-serif; font-size: 12px; font-weight: 500; letter-spacing: 0.04em; cursor: pointer; transition: all .15s ease; }
.ccy-trigger:hover { border-color: var(--accent); color: var(--accent); background: var(--panel-3); }
.ccy-trigger svg { width: 14px; height: 14px; stroke: currentColor; fill: none; stroke-width: 1.6; }
.ccy-trigger .caret { display: inline-block; width: 6px; height: 6px; border-right: 1.5px solid currentColor; border-bottom: 1.5px solid currentColor; transform: rotate(45deg) translate(-2px, -2px); transition: transform .15s ease; margin-left: 2px; }
.ccy-switcher.open .ccy-trigger .caret { transform: rotate(-135deg) translate(-2px, -2px); }
.ccy-menu { position: absolute; top: calc(100% + 6px); right: 0; min-width: 170px; background: var(--panel); border: 1px solid var(--border-strong); padding: 4px; z-index: 100; opacity: 0; transform: translateY(-6px); pointer-events: none; transition: opacity .18s ease, transform .18s ease; box-shadow: 0 8px 32px rgba(0,0,0,0.4); }
.ccy-switcher.open .ccy-menu { opacity: 1; transform: translateY(0); pointer-events: auto; }
.ccy-btn { display: flex; align-items: center; justify-content: space-between; gap: 12px; width: 100%; background: transparent; border: none; padding: 9px 12px; color: var(--text-warm); font-family: 'PingFang SC', 'Microsoft YaHei', system-ui, sans-serif; font-size: 13px; font-weight: 500; cursor: pointer; text-align: left; transition: color .12s ease, background .12s ease; letter-spacing: 0.02em; }
.ccy-btn:hover { color: var(--accent); background: var(--panel-2); }
.ccy-btn .ccy-code { font-family: var(--font-mono); font-size: 10.5px; letter-spacing: 0.16em; color: var(--text-dim); text-transform: uppercase; }
.ccy-btn.on { color: var(--accent); background: var(--accent-dim); }
.ccy-btn.on .ccy-code { color: var(--accent); }
.ccy-btn.on::before { content: '◇'; color: var(--accent); font-size: 10px; margin-right: 6px; vertical-align: middle; }
@media (max-width: 600px) {
  .ccy-switcher { margin-left: 6px; }
  .ccy-trigger { padding: 6px 10px; font-size: 11px; }
  .ccy-menu { min-width: 160px; right: auto; left: 0; }
  .ccy-btn { padding: 8px 10px; font-size: 12.5px; }
}