/* MetaTrader 4 根目录站点 — 深色交易终端风 */
:root {
  --bg: #0b1220;
  --card: #121a2b;
  --line: #243049;
  --ink: #e8e4d9;
  --dim: #9aa3b5;
  --gold: #c9a227;
  --gold-dim: #8a7018;
  --warn: #c45c4a;
  --ok: #3d8b6e;
  --wrap: 1100px;
}

* { box-sizing: border-box; }

html { scroll-behavior: auto; }

body {
  margin: 0;
  background:
    linear-gradient(180deg, rgba(11, 18, 32, 0.92), rgba(11, 18, 32, 0.96)),
    repeating-linear-gradient(0deg, transparent 0 27px, rgba(36, 48, 73, 0.35) 27px 28px),
    repeating-linear-gradient(90deg, transparent 0 39px, rgba(36, 48, 73, 0.22) 39px 40px),
    var(--bg);
  color: var(--ink);
  font-family: "Microsoft YaHei", "PingFang SC", "Noto Sans SC", sans-serif;
  font-size: 16px;
  line-height: 1.75;
}

img, svg { max-width: 100%; display: block; }

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

.wrap {
  width: min(var(--wrap), calc(100% - 40px));
  margin: 0 auto;
}

/* —— 顶栏 —— */
.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background: rgba(11, 18, 32, 0.94);
  border-bottom: 1px solid var(--line);
}

.header-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 68px;
  gap: 24px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0;
  color: var(--ink);
  text-decoration: none;
}

.logo:hover { text-decoration: none; }

.logo svg { width: 132px; height: 32px; }

.site-nav {
  display: flex;
  align-items: center;
  gap: 28px;
}

.site-nav a {
  position: relative;
  color: var(--dim);
  font-size: 14px;
  letter-spacing: 0.08em;
  text-decoration: none;
  padding: 6px 0 8px;
}

.site-nav a:hover { color: var(--ink); text-decoration: none; }

.site-nav a.is-current {
  color: var(--gold);
}

.site-nav a.is-current::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 2px;
  background: var(--gold);
}

/* —— 标题字体 —— */
h1, h2, h3, .serif {
  font-family: Georgia, "Songti SC", SimSun, "Microsoft YaHei", serif;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--ink);
}

h1 { font-size: clamp(32px, 4vw, 46px); line-height: 1.25; margin: 0 0 18px; }
h2 { font-size: clamp(24px, 3vw, 32px); line-height: 1.3; margin: 0 0 14px; }
h3 { font-size: 20px; line-height: 1.4; margin: 0 0 10px; }

.kicker {
  display: inline-block;
  margin-bottom: 10px;
  color: var(--gold);
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  font-family: Consolas, "Courier New", monospace;
}

.lead, p { margin: 0 0 14px; }
.lead { color: var(--ink); font-size: 17px; }
.dim { color: var(--dim); }

/* —— 按钮 —— */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 44px;
  padding: 10px 20px;
  border: 1px solid var(--gold);
  background: var(--gold);
  color: #14120a;
  font-family: inherit;
  font-size: 15px;
  cursor: pointer;
  text-decoration: none;
}

.btn:hover {
  background: #dbb42f;
  border-color: #dbb42f;
  text-decoration: none;
}

.btn-ghost {
  background: transparent;
  color: var(--gold);
}

.btn-ghost:hover {
  background: rgba(201, 162, 39, 0.12);
  color: var(--gold);
}

.btn-row { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 22px; }

button.btn { appearance: none; }

/* —— Hero —— */
.hero {
  padding: 56px 0 36px;
  border-bottom: 1px solid var(--line);
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  gap: 40px;
  align-items: center;
}

.terminal-frame {
  background: var(--card);
  border: 1px solid var(--line);
  box-shadow: 0 0 0 1px rgba(201, 162, 39, 0.08);
}

.terminal-chrome {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border-bottom: 1px solid var(--line);
  background: #0e1626;
}

.dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #3a465c;
}

.dot.gold { background: var(--gold); }

.chrome-title {
  margin-left: 8px;
  color: var(--dim);
  font-size: 12px;
  font-family: Consolas, "Courier New", monospace;
}

.terminal-body { padding: 10px 12px 14px; }

.quote-strip {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 8px;
  margin-top: 10px;
}

.quote-cell {
  border: 1px solid var(--line);
  padding: 8px 10px;
  background: #0e1626;
}

.quote-cell span {
  display: block;
  font-size: 11px;
  color: var(--dim);
  font-family: Consolas, "Courier New", monospace;
}

.quote-cell strong {
  display: block;
  margin-top: 2px;
  color: var(--ink);
  font-size: 15px;
  font-family: Consolas, "Courier New", monospace;
}

.quote-cell.up strong { color: var(--ok); }
.quote-cell.down strong { color: var(--warn); }

/* —— 区块 —— */
.block {
  padding: 56px 0;
  border-bottom: 1px solid var(--line);
}

.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 36px;
  align-items: start;
}

.split-rev > :first-child { order: 2; }
.split-rev > :last-child { order: 1; }

.panel {
  background: var(--card);
  border: 1px solid var(--line);
  padding: 22px 22px 18px;
}

.panel-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 12px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--line);
}

.panel-head span {
  font-family: Consolas, "Courier New", monospace;
  font-size: 12px;
  color: var(--gold);
  letter-spacing: 0.12em;
}

.tick-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.tick-list li {
  display: flex;
  gap: 10px;
  padding: 9px 0;
  border-bottom: 1px dashed var(--line);
  color: var(--dim);
}

.tick-list li:last-child { border-bottom: 0; }

.tick-list svg { flex: 0 0 16px; margin-top: 4px; }

.mono {
  font-family: Consolas, "Courier New", monospace;
  font-size: 13px;
  color: var(--gold);
}

/* —— 下载格 —— */
.dl-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.dl-card {
  background: var(--card);
  border: 1px solid var(--line);
  padding: 20px;
}

.dl-card h3 { margin-top: 8px; }

.dl-card .btn { width: 100%; margin-top: 12px; }

.notice {
  border: 1px solid var(--gold-dim);
  background: rgba(201, 162, 39, 0.08);
  color: var(--ink);
  padding: 14px 16px;
  margin: 16px 0 0;
}

.notice strong { color: var(--gold); }

.risk-box {
  border: 1px solid var(--warn);
  background: rgba(196, 92, 74, 0.1);
  padding: 22px 24px;
}

.risk-box h2 { color: #e8c4bc; }

.steps {
  counter-reset: step;
  list-style: none;
  margin: 0;
  padding: 0;
}

.steps li {
  position: relative;
  padding: 14px 0 14px 52px;
  border-bottom: 1px solid var(--line);
}

.steps li::before {
  counter-increment: step;
  content: counter(step, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 16px;
  color: var(--gold);
  font-family: Georgia, serif;
  font-size: 18px;
}

.spec-table {
  width: 100%;
  border-collapse: collapse;
}

.spec-table th,
.spec-table td {
  border: 1px solid var(--line);
  padding: 10px 12px;
  text-align: left;
  vertical-align: top;
}

.spec-table th {
  width: 28%;
  background: #0e1626;
  color: var(--gold);
  font-weight: 600;
}

/* —— FAQ —— */
.faq details {
  background: var(--card);
  border: 1px solid var(--line);
  margin-bottom: 10px;
  padding: 0 16px;
}

.faq summary {
  cursor: pointer;
  padding: 14px 0;
  color: var(--ink);
  font-weight: 600;
  list-style: none;
}

.faq summary::-webkit-details-marker { display: none; }

.faq summary::before {
  content: "+";
  display: inline-block;
  width: 18px;
  margin-right: 8px;
  color: var(--gold);
  font-family: Georgia, serif;
}

.faq details[open] summary::before { content: "–"; }

.faq details p { padding-bottom: 14px; color: var(--dim); }

/* —— 长文 —— */
.article h2 { margin-top: 36px; }
.article h3 { margin-top: 22px; color: var(--gold); }

.cta-band {
  margin-top: 28px;
  padding: 22px;
  background: var(--card);
  border: 1px solid var(--gold-dim);
}

/* —— 页脚 —— */
.site-footer {
  padding: 36px 0 28px;
  background: #0a101c;
  border-top: 1px solid var(--line);
  color: var(--dim);
  font-size: 14px;
}

.foot-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-bottom: 22px;
}

.foot-links {
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
  margin: 12px 0 16px;
}

.legal {
  border-top: 1px solid var(--line);
  padding-top: 16px;
  font-size: 13px;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

@media (max-width: 860px) {
  .hero-grid,
  .split,
  .dl-grid,
  .foot-grid {
    grid-template-columns: 1fr;
  }

  .split-rev > :first-child,
  .split-rev > :last-child { order: 0; }

  .header-bar { flex-wrap: wrap; padding: 10px 0; }
  .site-nav { gap: 16px; }
}