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

:root {
  --bg: #f7fbff;
  --bg-soft: #eef7ff;
  --white: #ffffff;
  --text: #122033;
  --text-soft: #5b6b82;
  --primary: #4da3ff;
  --primary-deep: #287dff;
  --primary-soft: rgba(77, 163, 255, 0.16);
  --line: rgba(18, 32, 51, 0.08);
  --shadow: 0 20px 60px rgba(61, 123, 215, 0.14);
  --radius-xl: 28px;
  --radius-lg: 20px;
  --radius-md: 14px;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: "Inter", "PingFang SC", "Microsoft YaHei", sans-serif;
  background: linear-gradient(180deg, #f8fcff 0%, #f4f9ff 100%);
  color: var(--text);
  overflow-x: hidden;
  position: relative;
}

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

button {
  font-family: inherit;
}

.container {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
}

.bg-grid {
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(rgba(77, 163, 255, 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(77, 163, 255, 0.06) 1px, transparent 1px);
  background-size: 36px 36px;
  pointer-events: none;
  z-index: -3;
}

.bg-glow {
  position: fixed;
  border-radius: 50%;
  filter: blur(80px);
  pointer-events: none;
  z-index: -2;
}

.bg-glow-1 {
  width: 340px;
  height: 340px;
  background: rgba(77, 163, 255, 0.22);
  top: 60px;
  left: -60px;
}

.bg-glow-2 {
  width: 320px;
  height: 320px;
  background: rgba(116, 222, 171, 0.18);
  right: -60px;
  top: 280px;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 30;
  backdrop-filter: blur(14px);
  background: rgba(255, 255, 255, 0.72);
  border-bottom: 1px solid rgba(18, 32, 51, 0.06);
}

.topbar-inner {
  min-height: 76px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 14px;
}

.brand-logo {
  width: 46px;
  height: 46px;
  border-radius: 14px;
  background: linear-gradient(135deg, #66b2ff 0%, #287dff 100%);
  color: #fff;
  font-size: 22px;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 12px 30px rgba(40, 125, 255, 0.25);
}

.brand-text {
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.brand-text strong {
  font-size: 18px;
  line-height: 1;
}

.brand-text span {
  font-size: 12px;
  color: var(--text-soft);
}

.nav {
  display: flex;
  align-items: center;
  gap: 24px;
}

.nav a {
  color: var(--text-soft);
  font-size: 14px;
  font-weight: 600;
  transition: 0.25s ease;
}

.nav a:hover {
  color: var(--primary-deep);
}

.hero {
  padding: 48px 0 34px;
}

.hero-inner {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 28px;
  align-items: center;
}

.hero-left,
.profile-card,
.content-card,
.wechat-box,
.jump-card {
  background: rgba(255, 255, 255, 0.88);
  border: 1px solid rgba(18, 32, 51, 0.06);
  box-shadow: var(--shadow);
}

.hero-left {
  border-radius: var(--radius-xl);
  padding: 44px;
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--primary-soft);
  color: var(--primary-deep);
  border: 1px solid rgba(40, 125, 255, 0.12);
  border-radius: 999px;
  padding: 10px 16px;
  font-size: 13px;
  font-weight: 700;
  margin-bottom: 22px;
}

.hero-left h1 {
  font-size: 54px;
  line-height: 1.08;
  letter-spacing: -1.4px;
  margin-bottom: 18px;
}

.hero-left h1 span {
  color: var(--primary-deep);
}

.hero-desc {
  font-size: 17px;
  line-height: 1.9;
  color: var(--text-soft);
  max-width: 720px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 28px;
}

.btn {
  min-height: 52px;
  padding: 0 22px;
  border-radius: 14px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 15px;
  transition: transform 0.2s ease, box-shadow 0.2s ease, opacity 0.2s ease;
}

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

.btn-primary {
  background: linear-gradient(135deg, #5bb0ff 0%, #287dff 100%);
  color: #fff;
  box-shadow: 0 12px 28px rgba(40, 125, 255, 0.26);
}

.btn-secondary {
  background: #fff;
  color: var(--primary-deep);
  border: 1px solid rgba(40, 125, 255, 0.14);
}

.btn-full {
  width: 100%;
}

.hero-cards {
  margin-top: 26px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}

.mini-card {
  background: linear-gradient(180deg, rgba(255,255,255,0.96) 0%, rgba(241,248,255,0.96) 100%);
  border: 1px solid rgba(18, 32, 51, 0.06);
  border-radius: 18px;
  padding: 18px 16px;
}

.mini-label {
  display: block;
  color: var(--text-soft);
  font-size: 12px;
  margin-bottom: 10px;
}

.mini-card strong {
  font-size: 15px;
  line-height: 1.5;
}

.profile-card {
  border-radius: var(--radius-xl);
  padding: 34px 28px;
}

.avatar-wrap {
  display: flex;
  justify-content: center;
  margin-bottom: 18px;
}

.avatar {
  width: 112px;
  height: 112px;
  border-radius: 32px;
  background: linear-gradient(135deg, #66b2ff 0%, #2f86ff 100%);
  color: #fff;
  font-size: 42px;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 18px 38px rgba(40, 125, 255, 0.22);
}

.profile-card h2 {
  text-align: center;
  font-size: 30px;
  margin-bottom: 8px;
}

.profile-subtitle {
  text-align: center;
  color: var(--text-soft);
  font-size: 15px;
  margin-bottom: 24px;
}

.info-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin-bottom: 24px;
}

.info-item {
  border: 1px solid rgba(18, 32, 51, 0.06);
  background: rgba(244, 250, 255, 0.88);
  border-radius: 16px;
  padding: 16px 18px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.info-item span {
  color: var(--text-soft);
  font-size: 13px;
}

.info-item strong {
  font-size: 16px;
}

.profile-actions {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.section {
  padding: 34px 0;
}

.section-soft {
  background: linear-gradient(180deg, rgba(230,245,255,0.35) 0%, rgba(255,255,255,0) 100%);
}

.section-title {
  margin-bottom: 22px;
}

.section-title span {
  display: inline-block;
  font-size: 13px;
  font-weight: 800;
  color: var(--primary-deep);
  letter-spacing: 1.6px;
  margin-bottom: 8px;
}

.section-title h2 {
  font-size: 34px;
  line-height: 1.2;
}

.content-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr 0.8fr;
  gap: 18px;
}

.content-card {
  border-radius: 24px;
  padding: 28px;
}

.content-card.large {
  min-height: 100%;
}

.content-card h3 {
  font-size: 22px;
  margin-bottom: 16px;
}

.content-card p {
  color: var(--text-soft);
  line-height: 1.9;
  font-size: 15px;
  margin-bottom: 12px;
}

.feature-list {
  list-style: none;
}

.feature-list li {
  position: relative;
  padding-left: 18px;
  color: var(--text-soft);
  line-height: 1.9;
  margin-bottom: 8px;
}

.feature-list li::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--primary);
  position: absolute;
  left: 0;
  top: 11px;
}

.wechat-box {
  border-radius: 26px;
  padding: 24px 26px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}

.wechat-left {
  display: flex;
  align-items: center;
  gap: 18px;
}

.wechat-icon {
  width: 72px;
  height: 72px;
  border-radius: 22px;
  background: linear-gradient(135deg, #7ce0a0 0%, #3fcf76 100%);
  color: #fff;
  font-size: 30px;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 14px 30px rgba(63, 207, 118, 0.22);
}

.wechat-label {
  color: var(--text-soft);
  font-size: 14px;
  margin-bottom: 8px;
}

.wechat-left h3 {
  font-size: 28px;
  margin-bottom: 6px;
}

.wechat-tip {
  color: var(--text-soft);
  font-size: 14px;
}

.copy-btn {
  min-width: 150px;
  min-height: 52px;
  border: none;
  border-radius: 14px;
  background: linear-gradient(135deg, #66b2ff 0%, #287dff 100%);
  color: #fff;
  font-size: 15px;
  font-weight: 800;
  cursor: pointer;
  box-shadow: 0 12px 28px rgba(40, 125, 255, 0.24);
  transition: transform 0.2s ease, opacity 0.2s ease;
}

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

.copy-btn.copied {
  opacity: 0.88;
}

.binance-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 18px;
}

.jump-card {
  border-radius: 24px;
  padding: 28px;
  transition: transform 0.22s ease, box-shadow 0.22s ease;
}

.jump-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 24px 54px rgba(61, 123, 215, 0.18);
}

.jump-badge {
  width: 44px;
  height: 44px;
  border-radius: 14px;
  background: var(--primary-soft);
  color: var(--primary-deep);
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
}

.jump-card h3 {
  font-size: 24px;
  margin-bottom: 12px;
}

.jump-card p {
  color: var(--text-soft);
  line-height: 1.85;
  font-size: 15px;
  margin-bottom: 18px;
}

.jump-card span {
  color: var(--primary-deep);
  font-weight: 800;
}

.footer {
  padding: 28px 0 40px;
}

.footer-inner {
  border-top: 1px solid rgba(18, 32, 51, 0.08);
  padding-top: 18px;
  color: var(--text-soft);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  font-size: 14px;
}

@media (max-width: 1024px) {
  .hero-inner,
  .content-grid,
  .binance-grid {
    grid-template-columns: 1fr;
  }

  .hero-left h1 {
    font-size: 44px;
  }

  .hero-cards {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .topbar-inner {
    min-height: auto;
    padding: 16px 0;
    flex-direction: column;
    align-items: flex-start;
  }

  .nav {
    gap: 16px;
    flex-wrap: wrap;
  }

  .hero {
    padding-top: 24px;
  }

  .hero-left,
  .profile-card,
  .content-card,
  .wechat-box,
  .jump-card {
    border-radius: 22px;
  }

  .hero-left {
    padding: 28px 20px;
  }

  .hero-left h1 {
    font-size: 36px;
  }

  .hero-desc {
    font-size: 15px;
  }

  .section-title h2 {
    font-size: 28px;
  }

  .wechat-box {
    flex-direction: column;
    align-items: flex-start;
  }

  .wechat-left {
    align-items: flex-start;
  }

  .wechat-left h3 {
    font-size: 24px;
    word-break: break-all;
  }

  .copy-btn {
    width: 100%;
  }

  .footer-inner {
    flex-direction: column;
    align-items: flex-start;
  }
}