:root {
  --ink: #152033;
  --muted: #667085;
  --line: #e1e7ef;
  --soft: #f6f8fb;
  --soft-blue: #eef5fb;
  --blue: #1554b7;
  --blue-dark: #0f2f63;
  --teal: #157f7b;
  --orange: #e87838;
  --green: #1f8a5b;
  --white: #fff;
  --shadow: 0 18px 48px rgba(16, 32, 68, 0.12);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", Arial, sans-serif;
  line-height: 1.65;
  background: #fbfcfe;
}

a {
  color: inherit;
  text-decoration: none;
}

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

.topbar {
  background: #102742;
  color: rgba(255, 255, 255, 0.86);
  font-size: 14px;
}

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

.topbar-inner {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  padding: 8px 0;
}

.nav {
  position: sticky;
  top: 0;
  z-index: 30;
  background: rgba(255, 255, 255, 0.96);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(14px);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 72px;
  gap: 24px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 800;
  color: var(--blue-dark);
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--blue), var(--teal));
  color: var(--white);
  font-weight: 900;
}

.brand span:last-child {
  display: block;
  font-size: 13px;
  font-weight: 500;
  color: var(--muted);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 22px;
  font-size: 15px;
  color: #273246;
}

.nav-links a:hover {
  color: var(--blue);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 18px;
  border-radius: 6px;
  border: 1px solid transparent;
  font-weight: 700;
  cursor: pointer;
}

.btn-primary {
  background: var(--orange);
  color: var(--white);
  box-shadow: 0 12px 26px rgba(242, 118, 46, 0.24);
}

.btn-outline {
  border-color: rgba(20, 89, 200, 0.26);
  color: var(--blue);
  background: var(--white);
}

.hero {
  position: relative;
  min-height: 640px;
  color: var(--white);
  background: #0f2f63;
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(12, 31, 65, 0.96) 0%, rgba(12, 31, 65, 0.82) 42%, rgba(12, 31, 65, 0.24) 100%),
    url("hero-trade.png") center / cover no-repeat;
}

.hero-inner {
  position: relative;
  width: min(1180px, calc(100% - 36px));
  margin: 0 auto;
  padding: 92px 0 64px;
}

.eyebrow {
  color: #ffd7bd;
  font-weight: 800;
  letter-spacing: 0;
}

h1,
h2,
h3 {
  margin: 0;
  line-height: 1.22;
}

h1 {
  max-width: 760px;
  margin-top: 14px;
  font-size: clamp(36px, 5vw, 62px);
}

.hero p {
  max-width: 660px;
  margin: 22px 0 0;
  color: rgba(255, 255, 255, 0.86);
  font-size: 18px;
}

.hero-note {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 22px;
  padding: 9px 12px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.1);
  color: rgba(255, 255, 255, 0.84);
  font-size: 14px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 34px;
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  max-width: 760px;
  margin-top: 56px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  background: rgba(255, 255, 255, 0.16);
}

.hero-stat {
  padding: 18px;
  background: rgba(9, 28, 66, 0.48);
}

.hero-stat strong {
  display: block;
  font-size: 24px;
}

.hero-stat span {
  color: rgba(255, 255, 255, 0.76);
  font-size: 14px;
}

.section {
  padding: 78px 0;
}

.section.alt {
  background: linear-gradient(180deg, var(--soft-blue), var(--soft));
}

.section-head {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 28px;
  margin-bottom: 34px;
}

.section-head p {
  max-width: 620px;
  margin: 10px 0 0;
  color: var(--muted);
}

.kicker {
  color: var(--blue);
  font-weight: 800;
  margin-bottom: 8px;
}

.grid-3,
.grid-4,
.steps {
  display: grid;
  gap: 18px;
}

.grid-3 {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.grid-4 {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.card,
.service,
.faq-item {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 8px;
}

.card,
.service {
  padding: 24px;
}

.card h3,
.service h3 {
  margin-bottom: 10px;
  font-size: 19px;
}

.card p,
.service p,
.faq-item p,
.page-body p,
.page-body li {
  color: var(--muted);
}

.tag {
  display: inline-flex;
  align-items: center;
  min-height: 28px;
  margin-bottom: 14px;
  padding: 0 10px;
  border-radius: 99px;
  background: #eaf1ff;
  color: var(--blue);
  font-size: 13px;
  font-weight: 700;
}

.trust-strip {
  position: relative;
  z-index: 4;
  margin-top: -42px;
}

.trust-inner {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--line);
  box-shadow: var(--shadow);
}

.trust-item {
  padding: 22px;
  background: var(--white);
}

.trust-item b {
  display: block;
  margin-bottom: 6px;
  color: var(--blue-dark);
  font-size: 17px;
}

.trust-item p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
}

.steps {
  grid-template-columns: repeat(5, minmax(0, 1fr));
  counter-reset: step;
}

.step {
  position: relative;
  padding: 22px;
  border-top: 4px solid var(--teal);
  background: var(--white);
  box-shadow: var(--shadow);
}

.step::before {
  counter-increment: step;
  content: counter(step, decimal-leading-zero);
  display: block;
  margin-bottom: 14px;
  color: var(--orange);
  font-weight: 900;
  font-size: 22px;
}

.cta-band {
  background: #102742;
  color: var(--white);
}

.cta-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 28px;
  padding: 42px 0;
}

.cta-inner p {
  margin: 8px 0 0;
  color: rgba(255, 255, 255, 0.76);
}

.page-hero {
  background: linear-gradient(135deg, #102742, #164f85);
  color: var(--white);
  padding: 72px 0;
}

.page-hero p {
  max-width: 760px;
  color: rgba(255, 255, 255, 0.78);
}

.page-body {
  max-width: 900px;
}

.article-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.article-card {
  display: flex;
  min-height: 260px;
  flex-direction: column;
  justify-content: space-between;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--white);
  box-shadow: 0 10px 30px rgba(16, 32, 68, 0.08);
}

.article-card h3 {
  margin: 8px 0 10px;
}

.article-card p {
  color: var(--muted);
}

.article-card a {
  color: var(--blue);
  font-weight: 800;
}

.notice-box {
  margin: 26px 0;
  padding: 20px;
  border-left: 4px solid var(--orange);
  background: #fff7f1;
  color: #68412b;
}

.compare-map-section {
  background:
    linear-gradient(135deg, rgba(238, 245, 251, 0.86), rgba(255, 247, 241, 0.72)),
    radial-gradient(circle at 18% 16%, rgba(21, 84, 183, 0.12), transparent 32%),
    radial-gradient(circle at 88% 34%, rgba(232, 120, 56, 0.12), transparent 30%);
}

.compare-map {
  position: relative;
  display: grid;
  grid-template-columns: 1fr 52px 1fr 52px 1fr;
  gap: 0;
  align-items: stretch;
  padding: 26px;
  border: 1px solid rgba(21, 84, 183, 0.14);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.78);
  box-shadow: 0 18px 50px rgba(16, 32, 68, 0.1);
}

.compare-node {
  min-height: 330px;
  padding: 26px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--white);
}

.compare-node h3 {
  margin: 10px 0 12px;
  color: var(--blue-dark);
  font-size: 24px;
}

.compare-node p,
.compare-node li {
  color: var(--muted);
}

.compare-node ul {
  display: grid;
  gap: 8px;
  margin: 18px 0 0;
  padding-left: 18px;
}

.map-label {
  display: inline-flex;
  align-items: center;
  min-height: 28px;
  padding: 0 10px;
  border-radius: 99px;
  background: #eef2f7;
  color: #475467;
  font-size: 13px;
  font-weight: 800;
}

.highlight-node {
  border-color: rgba(21, 84, 183, 0.24);
  background: linear-gradient(180deg, #f8fbff, #ffffff);
}

.highlight-node .map-label {
  background: #eaf1ff;
  color: var(--blue);
}

.result-node {
  border-color: rgba(232, 120, 56, 0.28);
  background: linear-gradient(180deg, #fff8f2, #ffffff);
}

.result-node .map-label {
  background: #fff0e6;
  color: #b45524;
}

.map-arrow {
  display: grid;
  place-items: center;
  color: var(--orange);
  font-size: 34px;
  font-weight: 900;
}

.mini-flow {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  margin-top: 18px;
}

.mini-flow span {
  display: grid;
  place-items: center;
  min-height: 42px;
  padding: 0 10px;
  border-radius: 6px;
  background: #102742;
  color: var(--white);
  font-size: 14px;
  font-weight: 800;
  text-align: center;
}

.compare-note {
  margin-top: 14px;
  color: var(--muted);
  font-size: 14px;
}

.page-body h2 {
  margin-top: 42px;
  margin-bottom: 12px;
}

.page-body ul {
  padding-left: 20px;
}

.faq-list {
  display: grid;
  gap: 14px;
}

.faq-item {
  padding: 22px;
}

.contact-panel {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 22px;
}

.split {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 42px;
  align-items: center;
}

.split p {
  color: var(--muted);
}

.feature-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.feature-list div {
  min-height: 122px;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--white);
  box-shadow: 0 12px 30px rgba(16, 32, 68, 0.08);
}

.feature-list strong {
  display: block;
  margin-bottom: 8px;
  color: var(--blue);
  font-size: 20px;
}

.feature-list span {
  color: var(--muted);
}

.contact-box {
  padding: 28px;
  border-radius: 8px;
  background: #f8fafc;
  border: 1px solid var(--line);
}

.contact-box a {
  color: var(--blue);
  font-weight: 700;
}

.qr-image {
  width: min(100%, 320px);
  margin: 18px 0;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--white);
}

.footer {
  padding: 34px 0;
  background: #101827;
  color: rgba(255, 255, 255, 0.72);
  font-size: 14px;
}

.footer a {
  color: rgba(255, 255, 255, 0.86);
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  gap: 22px;
  flex-wrap: wrap;
}

.floating-contact {
  position: fixed;
  right: 18px;
  bottom: 18px;
  z-index: 40;
  display: grid;
  gap: 10px;
}

.floating-contact a {
  box-shadow: var(--shadow);
}

@media (max-width: 920px) {
  .nav-inner {
    align-items: flex-start;
    flex-direction: column;
    padding: 16px 0;
  }

  .nav-links {
    flex-wrap: wrap;
    gap: 14px;
  }

  .hero {
    min-height: auto;
  }

  .hero-stats,
  .trust-inner,
  .grid-3,
  .grid-4,
  .steps,
  .compare-map,
  .contact-panel,
  .split,
  .feature-list,
  .article-grid {
    grid-template-columns: 1fr;
  }

  .compare-map {
    gap: 14px;
    padding: 16px;
  }

  .compare-node {
    min-height: auto;
  }

  .map-arrow {
    transform: rotate(90deg);
  }

  .section-head,
  .cta-inner {
    align-items: flex-start;
    flex-direction: column;
  }

  .floating-contact {
    left: 18px;
    right: 18px;
    grid-template-columns: 1fr 1fr;
  }
}