:root {
  --bg: #0a0e1a;
  --bg-soft: #101728;
  --card: #141c30;
  --card-2: #182240;
  --border: #24304d;
  --text: #e8eefc;
  --muted: #9aa8c7;
  --primary: #2f7bff;
  --primary-2: #38e1c6;
  --accent: #ffb547;
  --radius: 14px;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: "PingFang SC", "Microsoft YaHei", "Segoe UI", Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.75;
  font-size: 16px;
}

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

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

ul {
  list-style: none;
}

.container {
  width: min(1200px, 92%);
  margin: 0 auto;
}

.topbar {
  background: linear-gradient(90deg, #131b30, #0d1426);
  border-bottom: 1px solid var(--border);
  font-size: 14px;
  color: var(--muted);
}

.topbar .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 8px 0;
  gap: 12px;
  flex-wrap: wrap;
}

.topbar strong {
  color: var(--primary-2);
  font-weight: 600;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 99;
  background: rgba(10, 14, 26, 0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}

.nav-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 0;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 22px;
  font-weight: 800;
  letter-spacing: 1px;
}

.logo .logo-icon {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--primary), var(--primary-2));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
}

.logo em {
  font-style: normal;
  color: var(--primary-2);
}

.main-nav ul {
  display: flex;
  gap: 6px;
}

.main-nav a {
  display: block;
  padding: 9px 18px;
  border-radius: 8px;
  color: var(--muted);
  font-size: 16px;
  transition: all 0.25s;
}

.main-nav a:hover,
.main-nav a.active {
  color: #fff;
  background: linear-gradient(135deg, rgba(47, 123, 255, 0.25), rgba(56, 225, 198, 0.18));
}

.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--border);
  color: var(--text);
  font-size: 20px;
  padding: 6px 12px;
  border-radius: 8px;
  cursor: pointer;
}

.hero {
  position: relative;
  padding: 90px 0 100px;
  background:
    radial-gradient(800px 400px at 15% 10%, rgba(47, 123, 255, 0.22), transparent 60%),
    radial-gradient(700px 380px at 85% 20%, rgba(56, 225, 198, 0.16), transparent 60%),
    linear-gradient(180deg, #0c1222 0%, #0a0e1a 100%);
  overflow: hidden;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 40px;
  align-items: center;
}

.hero-tag {
  display: inline-block;
  padding: 6px 16px;
  border-radius: 999px;
  border: 1px solid rgba(56, 225, 198, 0.4);
  color: var(--primary-2);
  font-size: 14px;
  margin-bottom: 20px;
  background: rgba(56, 225, 198, 0.08);
}

.hero h1 {
  font-size: 40px;
  line-height: 1.35;
  margin-bottom: 18px;
}

.hero h1 span {
  background: linear-gradient(90deg, var(--primary), var(--primary-2));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero p.lead {
  color: var(--muted);
  font-size: 17px;
  margin-bottom: 30px;
}

.btn-row {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

.btn {
  display: inline-block;
  padding: 13px 30px;
  border-radius: 10px;
  font-size: 16px;
  font-weight: 700;
  transition: transform 0.2s, box-shadow 0.2s;
}

.btn:hover {
  transform: translateY(-2px);
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary), #1e5fe0);
  color: #fff;
  box-shadow: 0 8px 24px rgba(47, 123, 255, 0.35);
}

.btn-ghost {
  border: 1px solid var(--border);
  color: var(--text);
  background: rgba(255, 255, 255, 0.02);
}

.hero-panel {
  background: linear-gradient(160deg, var(--card), var(--card-2));
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 26px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.45);
}

.hero-panel h2 {
  font-size: 18px;
  margin-bottom: 18px;
  color: var(--primary-2);
}

.ticker-row {
  display: flex;
  justify-content: space-between;
  padding: 12px 0;
  border-bottom: 1px dashed var(--border);
  font-size: 15px;
}

.ticker-row:last-child {
  border-bottom: none;
}

.ticker-row .up {
  color: #2ecc8f;
  font-weight: 700;
}

.ticker-row .down {
  color: #ff5f6d;
  font-weight: 700;
}

.stats-band {
  margin-top: -50px;
  position: relative;
  z-index: 2;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.stat-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px 20px;
  text-align: center;
}

.stat-card .num {
  font-size: 28px;
  font-weight: 800;
  background: linear-gradient(90deg, var(--primary), var(--primary-2));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.stat-card .label {
  color: var(--muted);
  font-size: 14px;
  margin-top: 6px;
}

section.block {
  padding: 72px 0;
}

.section-head {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 46px;
}

.section-head .kicker {
  color: var(--primary-2);
  font-size: 14px;
  letter-spacing: 3px;
}

.section-head h2 {
  font-size: 32px;
  margin: 10px 0 14px;
}

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

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 24px;
  transition: transform 0.25s, border-color 0.25s;
}

.card:hover {
  transform: translateY(-4px);
  border-color: rgba(56, 225, 198, 0.45);
}

.card .icon {
  width: 54px;
  height: 54px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  margin-bottom: 16px;
  background: linear-gradient(135deg, rgba(47, 123, 255, 0.25), rgba(56, 225, 198, 0.2));
}

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

.card p {
  color: var(--muted);
  font-size: 15px;
}

.card ul.dots {
  margin-top: 12px;
}

.card ul.dots li {
  position: relative;
  padding-left: 20px;
  color: var(--muted);
  font-size: 14.5px;
  margin-bottom: 6px;
}

.card ul.dots li::before {
  content: "◆";
  position: absolute;
  left: 0;
  color: var(--primary-2);
  font-size: 11px;
  top: 5px;
}

.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}

.split .media {
  background: linear-gradient(150deg, var(--card), var(--card-2));
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 40px;
  text-align: center;
  font-size: 90px;
}

.split h2 {
  font-size: 30px;
  margin-bottom: 16px;
}

.split p {
  color: var(--muted);
  margin-bottom: 14px;
}

.check-list li {
  position: relative;
  padding-left: 32px;
  margin-bottom: 12px;
  color: var(--text);
}

.check-list li::before {
  content: "✔";
  position: absolute;
  left: 0;
  color: var(--primary-2);
  font-weight: 700;
}

.steps {
  counter-reset: step;
}

.step-item {
  display: flex;
  gap: 18px;
  padding: 22px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 16px;
}

.step-item .no {
  counter-increment: step;
  flex: 0 0 48px;
  height: 48px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--primary), var(--primary-2));
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 18px;
  color: #06101f;
}

.step-item h3 {
  font-size: 18px;
  margin-bottom: 6px;
}

.step-item p {
  color: var(--muted);
  font-size: 15px;
}

.news-list {
  display: grid;
  gap: 18px;
}

.news-item {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 26px 28px;
  transition: border-color 0.25s;
}

.news-item:hover {
  border-color: rgba(47, 123, 255, 0.55);
}

.news-meta {
  display: flex;
  gap: 14px;
  align-items: center;
  font-size: 13.5px;
  color: var(--muted);
  margin-bottom: 10px;
  flex-wrap: wrap;
}

.news-meta .time {
  color: var(--primary-2);
}

.news-meta .tag {
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 2px 12px;
  background: rgba(47, 123, 255, 0.08);
}

.news-item h3 {
  font-size: 19px;
  margin-bottom: 10px;
}

.news-item h3 a:hover {
  color: var(--primary-2);
}

.news-item p {
  color: var(--muted);
  font-size: 15px;
}

.news-item .more {
  display: inline-block;
  margin-top: 10px;
  color: var(--primary);
  font-size: 14.5px;
  font-weight: 600;
}

.timeline {
  position: relative;
  padding-left: 28px;
  border-left: 2px solid var(--border);
}

.timeline .t-item {
  position: relative;
  padding-bottom: 30px;
}

.timeline .t-item::before {
  content: "";
  position: absolute;
  left: -37px;
  top: 6px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--primary-2));
  box-shadow: 0 0 0 4px rgba(47, 123, 255, 0.18);
}

.timeline .t-item .t-date {
  color: var(--primary-2);
  font-weight: 700;
  font-size: 15px;
}

.timeline .t-item h3 {
  font-size: 18px;
  margin: 4px 0 6px;
}

.timeline .t-item p {
  color: var(--muted);
  font-size: 15px;
}

.faq details {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 14px;
  padding: 18px 22px;
}

.faq summary {
  cursor: pointer;
  font-size: 17px;
  font-weight: 700;
  list-style: none;
  position: relative;
  padding-right: 30px;
}

.faq summary::after {
  content: "＋";
  position: absolute;
  right: 0;
  top: 0;
  color: var(--primary-2);
  transition: transform 0.2s;
}

.faq details[open] summary::after {
  content: "－";
}

.faq details p {
  margin-top: 12px;
  color: var(--muted);
  font-size: 15px;
}

.contact-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-bottom: 40px;
}

.contact-card {
  text-align: center;
  padding: 34px 22px;
}

.contact-card .icon {
  font-size: 40px;
  margin-bottom: 12px;
}

.contact-card h3 {
  font-size: 18px;
  margin-bottom: 8px;
}

.contact-card p {
  color: var(--muted);
  font-size: 15px;
  word-break: break-all;
}

.form-panel {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 36px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}

.field {
  margin-bottom: 18px;
}

.field label {
  display: block;
  font-size: 14.5px;
  color: var(--muted);
  margin-bottom: 8px;
}

.field input,
.field textarea,
.field select {
  width: 100%;
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 12px 14px;
  color: var(--text);
  font-size: 15px;
  font-family: inherit;
}

.field input:focus,
.field textarea:focus,
.field select:focus {
  outline: none;
  border-color: var(--primary);
}

.page-hero {
  padding: 64px 0 56px;
  background:
    radial-gradient(700px 300px at 20% 0%, rgba(47, 123, 255, 0.2), transparent 60%),
    radial-gradient(600px 300px at 80% 10%, rgba(56, 225, 198, 0.12), transparent 60%),
    linear-gradient(180deg, #0c1222, #0a0e1a);
  border-bottom: 1px solid var(--border);
}

.breadcrumb {
  font-size: 14px;
  color: var(--muted);
  margin-bottom: 12px;
}

.breadcrumb a {
  color: var(--primary-2);
}

.page-hero h1 {
  font-size: 34px;
  margin-bottom: 12px;
}

.page-hero p {
  color: var(--muted);
  max-width: 860px;
}

.prose h2 {
  font-size: 26px;
  margin: 34px 0 14px;
  padding-left: 12px;
  border-left: 4px solid var(--primary-2);
}

.prose h3 {
  font-size: 20px;
  margin: 24px 0 10px;
}

.prose p {
  color: #c3cde4;
  margin-bottom: 14px;
  font-size: 15.5px;
}

.quote-band {
  background: linear-gradient(135deg, rgba(47, 123, 255, 0.12), rgba(56, 225, 198, 0.08));
  border: 1px solid rgba(56, 225, 198, 0.3);
  border-radius: var(--radius);
  padding: 22px 26px;
  margin: 24px 0;
  font-size: 16px;
}

.cta-band {
  background: linear-gradient(120deg, #16233f, #0f1a33);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 44px 40px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
  flex-wrap: wrap;
}

.cta-band h2 {
  font-size: 26px;
  margin-bottom: 8px;
}

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

.site-footer {
  margin-top: 60px;
  background: #080b14;
  border-top: 1px solid var(--border);
  padding: 56px 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 32px;
  padding-bottom: 40px;
}

.footer-grid h4 {
  font-size: 17px;
  margin-bottom: 16px;
  color: #fff;
}

.footer-grid p {
  color: var(--muted);
  font-size: 14.5px;
}

.footer-grid ul li {
  margin-bottom: 10px;
}

.footer-grid ul a {
  color: var(--muted);
  font-size: 14.5px;
  transition: color 0.2s;
}

.footer-grid ul a:hover {
  color: var(--primary-2);
}

.footer-keywords {
  border-top: 1px dashed var(--border);
  padding: 22px 0;
  font-size: 14px;
  color: var(--muted);
  line-height: 2.1;
}

.footer-keywords a {
  color: var(--muted);
  margin-right: 14px;
  white-space: nowrap;
}

.footer-keywords a:hover {
  color: var(--primary-2);
}

.copyright {
  border-top: 1px solid var(--border);
  padding: 18px 0;
  text-align: center;
  color: #67718c;
  font-size: 13.5px;
}

.back-top {
  position: fixed;
  right: 26px;
  bottom: 30px;
  width: 46px;
  height: 46px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--primary), var(--primary-2));
  color: #06101f;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  font-weight: 800;
  box-shadow: 0 10px 24px rgba(47, 123, 255, 0.4);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s;
  z-index: 98;
}

.back-top.show {
  opacity: 1;
  pointer-events: auto;
}

@media (max-width: 960px) {
  .hero-grid,
  .split,
  .grid-2 {
    grid-template-columns: 1fr;
  }

  .grid-3,
  .grid-4,
  .contact-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .hero h1 {
    font-size: 30px;
  }

  .nav-toggle {
    display: block;
  }

  .main-nav {
    display: none;
    width: 100%;
  }

  .main-nav.open {
    display: block;
  }

  .main-nav ul {
    flex-direction: column;
    padding: 10px 0;
  }

  .nav-wrap {
    flex-wrap: wrap;
  }
}

@media (max-width: 600px) {
  .grid-3,
  .grid-4,
  .contact-grid,
  .form-row {
    grid-template-columns: 1fr;
  }

  .hero {
    padding: 60px 0 80px;
  }

  section.block {
    padding: 52px 0;
  }
}