/* zh.metatraderg4.com.cn — full-bleed electric dark, no sidebar */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  font-size: 17px;
  line-height: 1.8;
  color: #e8edf5;
  background: #121418;
}

img {
  max-width: 100%;
  border: 0;
}

a {
  color: #3d8bfd;
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

.top-hairline {
  height: 2px;
  background: #3d8bfd;
}

.site-header {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 20px 32px;
  max-width: 1080px;
  margin: 0 auto;
  padding: 28px 24px 18px;
}

.wordmark {
  color: #e8edf5;
  text-decoration: none;
  line-height: 0.92;
}

.wordmark:hover {
  text-decoration: none;
  color: #e8edf5;
}

.wm-lg {
  display: block;
  font-size: clamp(2.6rem, 8vw, 4.4rem);
  font-weight: 800;
  letter-spacing: -0.06em;
}

.wm-sub {
  display: block;
  margin-top: 6px;
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: #9aa4b2;
}

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

.site-nav a {
  display: inline-block;
  padding: 6px 16px;
  border-radius: 999px;
  color: #9aa4b2;
  font-size: 0.92rem;
  text-decoration: none;
}

.site-nav a:hover {
  color: #e8edf5;
  text-decoration: none;
}

.site-nav a.is-current {
  background: #3d8bfd;
  color: #fff;
}

.wrap {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 24px;
}

.band-a,
.band-b {
  width: 100%;
}

.band-a {
  background: #121418;
}

.band-b {
  background: #1a1e26;
}

.hero,
.block {
  padding: 72px 0;
}

.eyebrow {
  margin: 0 0 14px;
  color: #3d8bfd;
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

h1 {
  margin: 0 0 22px;
  font-size: clamp(2.15rem, 5.8vw, 3.75rem);
  line-height: 1.12;
  letter-spacing: -0.035em;
  font-weight: 800;
}

h2 {
  margin: 0 0 22px;
  font-size: clamp(1.45rem, 3.2vw, 2.05rem);
  line-height: 1.25;
  letter-spacing: -0.02em;
}

h3 {
  margin: 0 0 10px;
  font-size: 1.08rem;
  line-height: 1.45;
}

.lead,
.prose p,
.stack-body p,
.cap-item p,
.faq-item p,
.news-list p,
.note,
.risk-box p {
  color: #9aa4b2;
}

.lead {
  margin: 0 0 28px;
  max-width: 46rem;
  font-size: 1.05rem;
}

.prose p {
  margin: 0 0 18px;
}

.prose p:last-child {
  margin-bottom: 0;
}

.prose-follow {
  margin-top: 36px;
}

.btn-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 0 0 18px;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 22px;
  border-radius: 4px;
  font-weight: 700;
  font-size: 0.95rem;
  text-decoration: none;
  border: 1px solid transparent;
}

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

.btn svg {
  flex: 0 0 auto;
}

.btn-primary {
  background: #3d8bfd;
  color: #fff;
}

.btn-primary:hover {
  background: #5aa0ff;
  color: #fff;
}

.btn-ghost {
  background: transparent;
  color: #e8edf5;
  border-color: #3d8bfd;
}

.btn-ghost:hover {
  background: rgba(61, 139, 253, 0.12);
  color: #e8edf5;
}

.note {
  margin: 0;
  font-size: 0.92rem;
  max-width: 46rem;
}

.stack-list {
  display: flex;
  flex-direction: column;
  gap: 36px;
  margin: 0;
  padding: 0;
}

.stack-item {
  display: grid;
  grid-template-columns: 92px 1fr;
  gap: 8px 28px;
  align-items: start;
}

.stack-num {
  font-size: 3.2rem;
  font-weight: 800;
  line-height: 1;
  color: #3d8bfd;
  letter-spacing: -0.04em;
}

.stack-body h3 {
  color: #e8edf5;
}

.cap-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px 20px;
}

.cap-item {
  padding: 22px 22px 20px;
  border-left: 3px solid #3d8bfd;
  background: rgba(61, 139, 253, 0.06);
}

.cap-item h3 {
  color: #e8edf5;
}

.cap-item p:last-child {
  margin: 0;
}

.compare {
  margin: 0;
}

.compare dt {
  margin: 0;
  padding-top: 18px;
  color: #3d8bfd;
  font-weight: 700;
}

.compare dd {
  margin: 8px 0 0;
  padding: 0 0 18px;
  border-bottom: 1px solid #2a3140;
  color: #9aa4b2;
}

.compare dd:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.risk-box {
  padding: 8px 0 0;
}

.risk-box p {
  margin: 0 0 16px;
}

.risk-box p:last-child {
  margin-bottom: 0;
}

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

.news-list li {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 28px;
  padding: 22px 0;
  border-top: 1px solid #2a3140;
}

.news-list li:last-child {
  border-bottom: 1px solid #2a3140;
}

.news-list time {
  flex: 0 0 7.5rem;
  color: #3d8bfd;
  font-size: 0.9rem;
  font-weight: 700;
}

.news-list h3 {
  flex: 1 1 16rem;
  margin: 0;
}

.news-list p {
  flex: 1 1 100%;
  margin: 4px 0 0;
}

.faq-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.faq-item {
  padding: 20px 22px;
  background: #121418;
  border: 1px solid #3a4250;
}

.band-a .faq-item {
  background: #1a1e26;
}

.faq-item h3 {
  color: #e8edf5;
}

.faq-item p {
  margin: 0;
}

.cta-strip {
  margin: 28px 0;
  padding: 22px 0;
  border-top: 1px solid #2a3140;
  border-bottom: 1px solid #2a3140;
}

.cta-strip p {
  margin: 0 0 14px;
  color: #9aa4b2;
}

.site-footer {
  padding: 48px 0 56px;
  border-top: 1px solid #2a3140;
  background: #121418;
}

.site-footer p {
  margin: 0 0 8px;
  color: #9aa4b2;
  font-size: 0.92rem;
}

.site-footer p:last-child {
  margin-bottom: 0;
}

@media (max-width: 720px) {
  .hero,
  .block {
    padding: 52px 0;
  }

  .stack-item {
    grid-template-columns: 1fr;
    gap: 10px;
  }

  .stack-num {
    font-size: 2.4rem;
  }

  .cap-grid {
    grid-template-columns: 1fr;
  }

  .news-list time {
    flex-basis: 100%;
  }
}