/* 探索区块链 — 全局样式 */
/* 纯白极简 · 移动端优先 · 线性图标 */

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  color: var(--text-main);
  font-family: var(--font);
  background: var(--surface);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
button, input { font: inherit; color: inherit; }
img { display: block; max-width: 100%; }
h1, h2, h3, h4, p { margin: 0; }

.app {
  max-width: var(--content-max);
  margin: 0 auto;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ---------- 顶部 Header ---------- */
.header {
  position: sticky;
  top: 0;
  z-index: 50;
  height: var(--header-h);
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 0 18px;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
}
.header .brand {
  display: flex;
  align-items: center;
  gap: 9px;
  font-weight: 800;
  font-size: 16px;
  letter-spacing: -0.3px;
}
.header .brand em {
  font-style: normal;
  color: var(--text-muted);
  font-weight: 500;
  font-size: 11px;
  letter-spacing: 0;
  margin-left: 2px;
}
.logo-mark {
  width: 30px;
  height: 30px;
  border-radius: 9px;
  background: #111;
  position: relative;
  flex: none;
}
.logo-mark::before, .logo-mark::after {
  content: "";
  position: absolute;
  background: #fff;
  width: 6px;
  border-radius: 3px;
  transform: rotate(45deg);
}
.logo-mark::before { height: 20px; left: 8px; top: 5px; }
.logo-mark::after { height: 14px; right: 7px; top: 8px; }
.header .spacer { margin-left: auto; }
.icon-btn {
  width: 36px;
  height: 36px;
  border: 1px solid var(--border);
  border-radius: 11px;
  background: #fff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  flex: none;
}
.icon-btn:active { background: var(--surface-2); }

/* ---------- 主内容 ---------- */
.main {
  flex: 1;
  padding-bottom: calc(var(--nav-h) + env(safe-area-inset-bottom, 0px) + 12px);
}
.page { display: none; }
.page.active { display: block; animation: fadeIn 0.2s ease; }
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(4px); }
  to { opacity: 1; transform: none; }
}

/* ---------- 页面标题 ---------- */
.page-head {
  padding: 22px 18px 14px;
}
.page-head h2 {
  font-size: 24px;
  font-weight: 800;
  letter-spacing: -0.5px;
}
.page-head p {
  color: var(--text-secondary);
  font-size: 13px;
  margin-top: 6px;
  line-height: 1.65;
}

/* ---------- Hero ---------- */
.hero { padding: 30px 18px 18px; }
.hero .eyebrow {
  color: var(--brand-blue);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 1.5px;
  margin-bottom: 12px;
}
.hero h1 {
  font-size: clamp(34px, 10vw, 52px);
  line-height: 1.05;
  letter-spacing: -2px;
  font-weight: 800;
}
.hero h1 .accent { color: var(--brand-blue); }
.hero .lead {
  color: var(--text-secondary);
  font-size: 13px;
  line-height: 1.7;
  max-width: 500px;
  margin-top: 14px;
}
.hero .chips {
  display: flex;
  gap: 7px;
  flex-wrap: wrap;
  margin: 15px 0 18px;
}
.chip {
  font-size: 10px;
  color: var(--text-secondary);
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 5px 9px;
}
.cta-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 11px 16px;
  border-radius: 12px;
  background: #111;
  color: #fff;
  font-size: 12px;
  font-weight: 700;
  border: none;
  cursor: pointer;
}
.cta-btn:active { opacity: 0.85; }

/* ---------- 区块 ---------- */
.section { padding: 18px 0 6px; }
.section-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  padding: 0 18px;
  margin-bottom: 12px;
}
.section-title {
  font-size: 18px;
  font-weight: 800;
  letter-spacing: -0.4px;
}
.section-sub {
  font-size: 10px;
  color: var(--text-muted);
  margin-top: 3px;
}
.more-link {
  font-size: 11px;
  color: var(--brand-blue);
  font-weight: 600;
  white-space: nowrap;
}

/* ---------- 横向滚动 ---------- */
.hscroll {
  display: flex;
  gap: 10px;
  overflow-x: auto;
  padding: 2px 18px 8px;
  scrollbar-width: none;
  -webkit-overflow-scrolling: touch;
}
.hscroll::-webkit-scrollbar { display: none; }
.hscroll > * { flex: none; }

/* ---------- 交易所卡片 ---------- */
.ex-card {
  width: 164px;
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  padding: 14px;
  background: #fff;
  display: block;
}
.ex-card:active { background: var(--surface-2); }
.ex-logo {
  width: 42px;
  height: 42px;
  border-radius: 12px;
  overflow: hidden;
  background: var(--surface-2);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 13px;
  color: #fff;
  margin-bottom: 11px;
}
.ex-logo img { width: 100%; height: 100%; object-fit: cover; }
.ex-name { font-size: 14px; font-weight: 700; }
.ex-local { font-size: 11px; color: var(--text-muted); margin-top: 1px; }
.ex-tag {
  display: inline-block;
  font-size: 9px;
  color: var(--brand-blue);
  background: var(--brand-blue-soft);
  border-radius: 6px;
  padding: 3px 6px;
  margin-top: 9px;
}
.ex-link {
  display: flex;
  align-items: center;
  gap: 3px;
  font-size: 10px;
  color: var(--text-muted);
  margin-top: 10px;
}
.ex-link .ic { color: var(--brand-blue); }

/* ---------- 快捷入口 ---------- */
.quick-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
  padding: 0 18px;
}
.quick-item {
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 14px 8px;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}
.quick-item .qicon {
  width: 36px;
  height: 36px;
  border-radius: 11px;
  background: var(--surface-2);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--brand-blue);
}
.quick-item span { font-size: 11px; font-weight: 600; }
.quick-item:active { background: var(--surface-2); }

/* ---------- 知识卡片 ---------- */
.know-card {
  width: 220px;
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  padding: 16px;
  background: #fff;
  display: block;
}
.know-card:active { background: var(--surface-2); }
.know-card .knum {
  font-size: 10px;
  font-weight: 800;
  color: var(--brand-blue);
  letter-spacing: 1px;
}
.know-card .kicon {
  width: 34px;
  height: 34px;
  border-radius: 10px;
  background: var(--brand-blue-soft);
  color: var(--brand-blue);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 12px 0 10px;
}
.know-card h3 { font-size: 15px; font-weight: 700; }
.know-card p {
  font-size: 11px;
  color: var(--text-secondary);
  margin-top: 5px;
  line-height: 1.6;
}

/* ---------- 列表 ---------- */
.list { padding: 0 18px; display: flex; flex-direction: column; gap: 10px; }
.row {
  display: flex;
  align-items: center;
  gap: 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 13px 14px;
  background: #fff;
}
.row:active { background: var(--surface-2); }
.row .grow { flex: 1; min-width: 0; }

/* ---------- 行情行 ---------- */
.coin-logo {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  flex: none;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 12px;
  color: #fff;
}
.coin-name { font-size: 14px; font-weight: 700; }
.coin-sym { font-size: 11px; color: var(--text-muted); }
.price { font-size: 14px; font-weight: 700; text-align: right; }
.change { font-size: 11px; text-align: right; margin-top: 2px; font-weight: 600; }
.up { color: var(--up); }
.down { color: var(--down); }
.spark {
  width: 64px;
  height: 28px;
  flex: none;
  margin-left: auto;
}

/* ---------- 资讯 ---------- */
.news-item {
  display: flex;
  gap: 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 13px 14px;
  background: #fff;
}
.news-item:active { background: var(--surface-2); }
.news-thumb {
  width: 56px;
  height: 56px;
  border-radius: 12px;
  flex: none;
  background: linear-gradient(135deg, #EAF2FF, #F5F7FA);
  color: var(--brand-blue);
  font-size: 9px;
  font-weight: 800;
  letter-spacing: 1px;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
}
.news-title {
  font-size: 14px;
  font-weight: 600;
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.news-meta {
  font-size: 10px;
  color: var(--text-muted);
  margin-top: 5px;
  display: flex;
  gap: 6px;
  align-items: center;
}
.news-meta .badge {
  color: var(--brand-blue);
  background: var(--brand-blue-soft);
  border-radius: 5px;
  padding: 1px 5px;
  font-weight: 600;
}

/* ---------- 面板 ---------- */
.panel {
  margin: 0 18px;
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  padding: 16px;
  background: #fff;
}
.panel + .panel { margin-top: 12px; }
.search-box {
  display: flex;
  align-items: center;
  gap: 8px;
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 10px 13px;
  background: var(--surface-2);
  color: var(--text-muted);
}
.search-box input {
  flex: 1;
  border: none;
  outline: none;
  background: transparent;
  font-size: 13px;
  color: var(--text-main);
  min-width: 0;
}

/* ---------- 底部导航 ---------- */
.bottom-nav {
  position: fixed;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 100%;
  max-width: var(--content-max);
  height: calc(var(--nav-h) + env(safe-area-inset-bottom, 0px));
  padding-bottom: env(safe-area-inset-bottom, 0px);
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(14px);
  border-top: 1px solid var(--border);
  display: flex;
  z-index: 50;
}
.nav-item {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 3px;
  font-size: 10px;
  color: var(--text-muted);
  font-weight: 600;
}
.nav-item .ic { transition: none; }
.nav-item.active { color: var(--brand-blue); }
.nav-item:active { background: var(--surface-2); }

/* ---------- 抽屉 ---------- */
.drawer-mask {
  position: fixed;
  inset: 0;
  background: rgba(17, 17, 17, 0.4);
  z-index: 60;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease;
}
.drawer-mask.open { opacity: 1; pointer-events: auto; }
.drawer {
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  width: 280px;
  max-width: 82vw;
  background: #fff;
  z-index: 61;
  transform: translateX(-100%);
  transition: transform 0.22s ease;
  display: flex;
  flex-direction: column;
  overflow-y: auto;
}
.drawer.open { transform: none; }
.drawer-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 18px;
  border-bottom: 1px solid var(--border);
}
.drawer-list { padding: 10px 12px; }
.drawer-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 10px;
  border-radius: 11px;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-main);
}
.drawer-item .ic { color: var(--text-muted); }
.drawer-item.active { background: var(--brand-blue-soft); color: var(--brand-blue); }
.drawer-item.active .ic { color: var(--brand-blue); }
.drawer-item:active { background: var(--surface-2); }
.drawer-foot {
  margin-top: auto;
  padding: 14px 18px;
  border-top: 1px solid var(--border);
  font-size: 11px;
  color: var(--text-muted);
}

/* ---------- 详情页 ---------- */
.detail-actions {
  display: flex;
  gap: 8px;
}
.action-btn {
  height: 36px;
  padding: 0 12px;
  border: 1px solid var(--border);
  border-radius: 11px;
  background: #fff;
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: 11px;
  font-weight: 600;
  cursor: pointer;
}
.action-btn.on { color: var(--brand-blue); border-color: var(--brand-blue); background: var(--brand-blue-soft); }
.exchange-hero {
  display: flex;
  gap: 14px;
  align-items: center;
}
.exchange-hero .ex-logo { width: 56px; height: 56px; font-size: 16px; margin: 0; }
.exchange-hero h2 { font-size: 20px; font-weight: 800; }
.detail-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
}
.detail-cell {
  background: var(--surface-2);
  border-radius: 12px;
  padding: 12px;
}
.detail-cell .k { font-size: 10px; color: var(--text-muted); }
.detail-cell .v { font-size: 14px; font-weight: 700; margin-top: 4px; }
.prose h3 { font-size: 15px; font-weight: 700; margin: 16px 0 8px; }
.prose p { font-size: 13px; color: var(--text-secondary); line-height: 1.8; margin-bottom: 8px; }
.prose .first { margin-top: 0; }

/* ---------- 通用 ---------- */
.toolbar {
  display: flex;
  gap: 8px;
  padding: 0 18px;
  margin-bottom: 14px;
  overflow-x: auto;
  scrollbar-width: none;
}
.toolbar::-webkit-scrollbar { display: none; }
.filter-chip {
  flex: none;
  font-size: 11px;
  font-weight: 600;
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 7px 13px;
  background: #fff;
  color: var(--text-secondary);
  cursor: pointer;
}
.filter-chip.active {
  color: #fff;
  background: #111;
  border-color: #111;
}
.empty {
  text-align: center;
  padding: 48px 18px;
  color: var(--text-muted);
}
.empty .eicon {
  width: 52px;
  height: 52px;
  margin: 0 auto 14px;
  border-radius: 16px;
  background: var(--surface-2);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
}
.empty h3 { font-size: 14px; color: var(--text-main); }
.empty p { font-size: 11px; margin-top: 5px; }
.link-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 5px;
  width: 100%;
  padding: 12px;
  border-radius: 12px;
  background: #111;
  color: #fff;
  font-size: 13px;
  font-weight: 700;
}
.link-btn.secondary {
  background: var(--surface-2);
  color: var(--text-main);
  border: 1px solid var(--border);
}
.compare-table { width: 100%; border-collapse: collapse; font-size: 12px; }
.compare-table th, .compare-table td {
  text-align: left;
  padding: 11px 8px;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
}
.compare-table th {
  color: var(--text-muted);
  font-weight: 500;
  font-size: 10px;
  white-space: nowrap;
}
.compare-table td:first-child { font-weight: 700; white-space: nowrap; }
.compare-table td { color: var(--text-secondary); }
.list-section-label {
  font-size: 11px;
  font-weight: 700;
  color: var(--text-muted);
  padding: 14px 18px 8px;
}
.mock-tag {
  display: inline-block;
  font-size: 9px;
  color: #B45309;
  background: #FEF3C7;
  border-radius: 5px;
  padding: 2px 5px;
  margin-left: 6px;
  vertical-align: middle;
}

@media (min-width: 600px) {
  .quick-grid { grid-template-columns: repeat(4, 1fr); }
}