/* MetaTrader 4 · three-column cream / forest layout */
:root {
  --paper: #f6f1e3;
  --forest: #1b4332;
  --pine: #2d6a4f;
  --moss: #40916c;
  --ink: #2b2b2b;
  --mute: #5a574e;
  --line: #1b4332;
  --card: #fffaf0;
  --rule: rgba(27, 67, 50, 0.28);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: "Trebuchet MS", "Source Han Sans SC", "Microsoft YaHei", sans-serif;
  font-size: 17px;
  line-height: 1.75;
}

a {
  color: var(--forest);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

a:hover {
  color: var(--pine);
}

.frame {
  width: min(1180px, calc(100% - 36px));
  margin: 0 auto;
}

.ink {
  color: var(--ink);
}

/* —— masthead full width —— */
.mast {
  background: var(--forest);
  color: var(--paper);
  border-bottom: 1px solid #0f2a1f;
}

.mast .frame {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  min-height: 68px;
  padding: 10px 0;
}

.brand {
  color: var(--paper);
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-decoration: none;
  border: 1px solid rgba(246, 241, 227, 0.35);
  padding: 6px 12px;
}

.brand:hover {
  color: var(--paper);
}

.folio {
  display: none;
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  opacity: 0.8;
}

.nav-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
}

.nav-row a {
  color: var(--paper);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  padding-bottom: 2px;
}

.nav-row a:hover,
.nav-row a.is-on {
  border-bottom-color: var(--paper);
  color: var(--paper);
}

/* —— hero full band —— */
.hero-band {
  background: linear-gradient(180deg, #efe6cf 0%, var(--paper) 100%);
  border-bottom: 1px solid var(--line);
  padding: 36px 0 28px;
}

.hero-band .kicker {
  margin: 0 0 8px;
  color: var(--forest);
  font-size: 0.78rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.hero-band h1 {
  margin: 0 0 14px;
  color: var(--forest);
  font-size: clamp(1.55rem, 2.4vw, 2.15rem);
  line-height: 1.28;
  font-weight: 700;
}

.hero-band .lead {
  margin: 0 0 18px;
  max-width: 68ch;
  color: var(--ink);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px 20px;
}

.hero-note {
  margin: 0;
  color: var(--mute);
  font-size: 0.88rem;
}

/* —— body: 240 | fluid | 280 —— */
.sheet {
  display: grid;
  grid-template-columns: 240px 1fr 280px;
  gap: 22px;
  align-items: start;
  padding: 26px 0 56px;
}

.rail,
.side-card,
.issue {
  border: 1px solid var(--line);
  background: var(--card);
}

.rail {
  position: sticky;
  top: 14px;
  padding: 16px 14px 18px;
}

.rail h2 {
  margin: 0 0 10px;
  color: var(--forest);
  font-size: 0.82rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  border-bottom: 1px solid var(--rule);
  padding-bottom: 8px;
}

.rail ol {
  margin: 0;
  padding: 0 0 0 18px;
}

.rail li {
  margin: 0 0 8px;
  font-size: 0.86rem;
  line-height: 1.45;
}

.rail a {
  text-decoration: none;
}

.rail a:hover {
  text-decoration: underline;
}

.issue {
  padding: 26px 30px 36px;
}

.issue h2 {
  margin: 1.55em 0 0.65em;
  color: var(--forest);
  font-size: 1.28rem;
  line-height: 1.35;
  border-top: 1px solid var(--line);
  padding-top: 0.85em;
}

.issue h2:first-child {
  margin-top: 0;
  border-top: 0;
  padding-top: 0;
}

.issue p {
  margin: 0 0 1em;
}

.issue ul,
.issue ol {
  margin: 0 0 1em;
  padding-left: 1.25em;
}

.issue li {
  margin: 0 0 0.4em;
}

.dateline {
  margin: 0 0 18px;
  color: var(--mute);
  font-size: 0.82rem;
  letter-spacing: 0.04em;
}

/* stacked MT4 / MT5 definition blocks — not a table */
.compare-stack {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin: 0 0 1.1em;
}

.def-block {
  margin: 0;
  border: 1px solid var(--line);
  padding: 14px 16px 10px;
  background: #f3ecda;
}

.def-block dt {
  margin: 0 0 6px;
  color: var(--forest);
  font-weight: 700;
  letter-spacing: 0.04em;
}

.def-block dd {
  margin: 0 0 8px;
}

.digest {
  list-style: none;
  margin: 0 0 1em;
  padding: 0;
  border-top: 1px solid var(--rule);
}

.digest li {
  display: grid;
  grid-template-columns: 6.6em 1fr;
  gap: 10px;
  margin: 0;
  padding: 8px 0;
  border-bottom: 1px solid var(--rule);
  font-size: 0.95rem;
}

.digest time {
  color: var(--mute);
  font-variant-numeric: tabular-nums;
}

.faq-list {
  margin: 0;
}

.faq-item {
  margin: 0 0 16px;
  padding: 0 0 12px;
  border-bottom: 1px solid var(--rule);
}

.faq-item h3 {
  margin: 0 0 6px;
  color: var(--forest);
  font-size: 1.02rem;
}

.faq-item p {
  margin: 0 0 0.55em;
}

.side-card {
  position: sticky;
  top: 14px;
  padding: 18px 16px 20px;
}

.side-card .mark {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 8px;
  color: var(--forest);
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.side-card h2 {
  margin: 0 0 10px;
  color: var(--forest);
  font-size: 1.12rem;
  line-height: 1.35;
}

.side-card p {
  margin: 0 0 12px;
  font-size: 0.92rem;
}

.side-card ul {
  margin: 0 0 14px;
  padding-left: 1.1em;
  font-size: 0.9rem;
}

.os-row {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin: 0 0 12px;
}

.os-row a {
  display: flex;
  align-items: center;
  gap: 8px;
  border: 1px solid var(--line);
  padding: 8px 10px;
  text-decoration: none;
  font-size: 0.9rem;
  background: var(--paper);
}

.os-row a:hover {
  background: #efe6cf;
}

.fine {
  margin: 10px 0 0;
  color: var(--mute);
  font-size: 0.8rem;
  line-height: 1.5;
}

.forest-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: var(--forest);
  color: var(--paper);
  border: 1px solid var(--forest);
  padding: 10px 18px;
  font-family: inherit;
  font-size: 0.98rem;
  font-weight: 700;
  text-decoration: none;
  cursor: pointer;
}

.forest-btn:hover {
  background: var(--pine);
  color: var(--paper);
  border-color: var(--pine);
}

.forest-btn svg,
.os-row svg,
.mark svg,
.ico {
  display: block;
  flex: 0 0 auto;
}

.foot {
  background: var(--forest);
  color: var(--paper);
  border-top: 1px solid #0f2a1f;
  padding: 22px 0 28px;
  font-size: 0.88rem;
}

.foot .frame {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 12px 24px;
}

.foot a {
  color: var(--paper);
}

.foot p {
  margin: 0;
  max-width: 62ch;
  opacity: 0.92;
}

@media (max-width: 980px) {
  .sheet {
    grid-template-columns: 1fr;
  }

  .rail,
  .side-card {
    position: static;
  }

  .folio {
    display: none;
  }
}

@media (min-width: 720px) {
  .folio {
    display: block;
  }
}

@media (max-width: 640px) {
  .mast .frame {
    flex-direction: column;
    align-items: flex-start;
  }

  .issue {
    padding: 20px 16px 28px;
  }

  .digest li {
    grid-template-columns: 1fr;
    gap: 2px;
  }
}