:root {
  --bg: #07110f;
  --bg-2: #0b1714;
  --panel: rgba(16, 35, 30, 0.78);
  --panel-2: #10231e;
  --line: rgba(142, 255, 218, 0.12);
  --text: #edf7f3;
  --muted: #8ca49b;
  --green: #35e2ad;
  --green-2: #9bf6d8;
  --red: #ff7586;
  --shadow: 0 24px 80px rgba(0,0,0,.34);
  --radius: 22px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont,
    "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at 82% 6%, rgba(53,226,173,.12), transparent 32rem),
    radial-gradient(circle at 6% 24%, rgba(70,127,255,.09), transparent 30rem),
    var(--bg);
}

button, a {
  font: inherit;
}

button {
  cursor: pointer;
}

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

.app-shell {
  min-height: 100vh;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 30;
  height: 78px;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 24px;
  padding: 0 5vw;
  border-bottom: 1px solid var(--line);
  background: rgba(7,17,15,.76);
  backdrop-filter: blur(18px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  width: fit-content;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 36px;
  height: 36px;
  border-radius: 11px;
  color: #06110e;
  font-weight: 900;
  background: linear-gradient(135deg, var(--green), #a4ffe3);
  box-shadow: 0 0 32px rgba(53,226,173,.3);
}

.brand-copy {
  display: flex;
  flex-direction: column;
  line-height: 1.05;
}

.brand-copy b {
  letter-spacing: .04em;
}

.brand-copy small {
  margin-top: 5px;
  color: var(--muted);
  font-size: 10px;
  letter-spacing: .12em;
}

.nav {
  display: flex;
  gap: 28px;
  color: #b8cbc4;
  font-size: 14px;
}

.nav a {
  transition: color .2s ease;
}

.nav a:hover {
  color: var(--green-2);
}

.header-actions {
  justify-self: end;
  display: flex;
  gap: 10px;
}

.primary-btn, .ghost-btn {
  border-radius: 12px;
  padding: 11px 16px;
  border: 1px solid transparent;
  transition: .2s ease;
}

.primary-btn {
  color: #04100c;
  font-weight: 800;
  background: linear-gradient(135deg, var(--green), #8cf4d2);
  box-shadow: 0 10px 28px rgba(53,226,173,.16);
}

.primary-btn:hover {
  transform: translateY(-1px);
  filter: brightness(1.05);
}

.ghost-btn {
  color: var(--text);
  border-color: var(--line);
  background: rgba(255,255,255,.025);
}

.large {
  padding: 14px 22px;
}

.hero {
  width: min(1420px, 90vw);
  min-height: 690px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.02fr .98fr;
  align-items: center;
  gap: 5vw;
  padding: 74px 0 64px;
}

.eyebrow, .kicker {
  color: var(--green);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: .18em;
}

.hero h1 {
  max-width: 820px;
  margin: 18px 0 20px;
  font-size: clamp(42px, 5vw, 74px);
  line-height: 1.05;
  letter-spacing: -.045em;
}

.hero-desc {
  max-width: 700px;
  margin: 0;
  color: #a9bdb6;
  font-size: 18px;
  line-height: 1.8;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 22px;
  margin-top: 32px;
}

.text-link {
  color: var(--green-2);
  font-weight: 700;
}

.hero-metrics {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  margin-top: 54px;
  max-width: 680px;
}

.hero-metrics div {
  padding-right: 18px;
  border-right: 1px solid var(--line);
}

.hero-metrics div:last-child {
  border-right: 0;
}

.hero-metrics strong,
.hero-metrics span {
  display: block;
}

.hero-metrics strong {
  font-size: 22px;
}

.hero-metrics span {
  margin-top: 7px;
  color: var(--muted);
  font-size: 12px;
}

.terminal-card {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 26px;
  background:
    linear-gradient(180deg, rgba(21,45,38,.86), rgba(8,19,16,.94));
  box-shadow: var(--shadow);
}

.terminal-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 17px 20px;
  border-bottom: 1px solid var(--line);
}

.terminal-title {
  display: flex;
  align-items: center;
  gap: 9px;
  font-weight: 700;
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 14px var(--green);
}

.terminal-meta {
  color: var(--green);
  font-size: 11px;
  font-weight: 900;
  letter-spacing: .15em;
}

.chart-wrap {
  position: relative;
  padding: 12px 12px 0;
}

.chart-wrap svg {
  width: 100%;
  height: auto;
  display: block;
}

.grid line {
  stroke: rgba(255,255,255,.055);
  stroke-width: 1;
}

.area {
  fill: url(#area);
}

.price-line {
  fill: none;
  stroke: #45e6b5;
  stroke-width: 3;
  stroke-linecap: round;
}

.price-badge {
  position: absolute;
  top: 28px;
  left: 30px;
  display: grid;
  gap: 6px;
  padding: 14px 15px;
  border-radius: 14px;
  border: 1px solid var(--line);
  background: rgba(7,17,15,.72);
  backdrop-filter: blur(12px);
}

.price-badge span {
  color: var(--muted);
  font-size: 11px;
}

.price-badge strong {
  font-size: 22px;
}

.price-badge em {
  color: var(--green);
  font-style: normal;
  font-weight: 800;
  font-size: 12px;
}

.strategy-strip {
  display: grid;
  grid-template-columns: 1.7fr repeat(3, 1fr);
  gap: 1px;
  border-top: 1px solid var(--line);
  background: var(--line);
}

.strategy-strip > div {
  padding: 16px 18px;
  background: #0a1814;
}

.strategy-strip span,
.strategy-strip strong {
  display: block;
}

.strategy-strip span {
  color: var(--muted);
  font-size: 10px;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.strategy-strip strong {
  margin-top: 7px;
  font-size: 13px;
}

.positive,
.up {
  color: var(--green) !important;
}

.down {
  color: var(--red) !important;
}

.ticker-section,
.feature-section,
.architecture {
  width: min(1420px, 90vw);
  margin: 0 auto;
  padding: 86px 0;
}

.section-heading {
  display: flex;
  justify-content: space-between;
  align-items: end;
  margin-bottom: 30px;
}

.section-heading h2,
.arch-copy h2,
.cta h2 {
  margin: 8px 0 0;
  font-size: clamp(30px, 3.4vw, 48px);
  letter-spacing: -.035em;
}

.section-heading.narrow {
  max-width: 860px;
}

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

.market-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
}

.market-card {
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: linear-gradient(180deg, rgba(20,40,34,.66), rgba(10,20,17,.78));
}

.coin {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--muted);
  font-size: 12px;
}

.coin-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #73857f;
}

.market-card strong,
.market-card > span {
  display: block;
}

.market-card strong {
  margin-top: 20px;
  font-size: 25px;
}

.market-card > span {
  margin-top: 7px;
  font-size: 13px;
  font-weight: 800;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}

.feature-card {
  min-height: 220px;
  padding: 26px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background:
    radial-gradient(circle at 100% 0%, rgba(53,226,173,.09), transparent 15rem),
    rgba(12,27,23,.72);
}

.feature-num {
  color: var(--green);
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 12px;
}

.feature-card h3 {
  margin: 38px 0 10px;
  font-size: 22px;
}

.feature-card p {
  margin: 0;
  color: var(--muted);
  line-height: 1.75;
}

.architecture {
  display: grid;
  grid-template-columns: .9fr 1.1fr;
  align-items: center;
  gap: 8vw;
}

.arch-copy p {
  max-width: 640px;
  color: var(--muted);
  line-height: 1.9;
}

.tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: 9px;
  margin-top: 24px;
}

.tag-row span {
  padding: 8px 10px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: #a9c3b9;
  font-size: 11px;
  background: rgba(255,255,255,.02);
}

.arch-diagram {
  padding: 26px;
  border: 1px solid var(--line);
  border-radius: 24px;
  background: rgba(10,23,20,.78);
  box-shadow: var(--shadow);
}

.node-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
}

.node {
  display: grid;
  place-items: center;
  min-height: 64px;
  padding: 12px;
  border: 1px solid rgba(53,226,173,.16);
  border-radius: 14px;
  color: #d3e5df;
  background: #10231e;
  text-align: center;
}

.node.major {
  width: 60%;
  margin: 0 auto 18px;
  background: linear-gradient(135deg, rgba(53,226,173,.18), rgba(53,226,173,.05));
}

.bus {
  margin: 12px 0;
  padding: 12px;
  border-radius: 10px;
  color: #08130f;
  background: linear-gradient(90deg, #3bdcaf, #9af4d7);
  text-align: center;
  font-size: 12px;
  font-weight: 900;
  letter-spacing: .06em;
}

.cta {
  width: min(1260px, 90vw);
  margin: 90px auto 110px;
  padding: 70px 40px;
  text-align: center;
  border: 1px solid var(--line);
  border-radius: 28px;
  background:
    radial-gradient(circle at 50% 0%, rgba(53,226,173,.18), transparent 32rem),
    rgba(12,28,23,.8);
}

.cta p {
  max-width: 680px;
  margin: 18px auto 26px;
  color: var(--muted);
  line-height: 1.8;
}

.footer {
  width: min(1420px, 90vw);
  margin: 0 auto;
  padding: 32px 0 44px;
  display: flex;
  justify-content: space-between;
  gap: 20px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 12px;
}

.footer div {
  display: flex;
  gap: 10px;
}

.footer b {
  color: var(--text);
}

@media (max-width: 1100px) {
  .topbar {
    grid-template-columns: 1fr auto;
  }

  .nav {
    display: none;
  }

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

  .hero {
    padding-top: 52px;
  }

  .terminal-card {
    margin-top: 12px;
  }

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

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

@media (max-width: 700px) {
  .topbar {
    height: 66px;
    padding: 0 18px;
  }

  .brand-copy small,
  .ghost-btn {
    display: none;
  }

  .header-actions .primary-btn {
    padding: 9px 12px;
    font-size: 12px;
  }

  .hero,
  .ticker-section,
  .feature-section,
  .architecture {
    width: min(92vw, 100%);
  }

  .hero {
    min-height: auto;
    padding: 44px 0;
  }

  .hero h1 {
    font-size: 42px;
  }

  .hero-desc {
    font-size: 16px;
  }

  .hero-actions {
    align-items: flex-start;
    flex-direction: column;
  }

  .hero-metrics {
    grid-template-columns: 1fr;
    margin-top: 38px;
  }

  .hero-metrics div {
    padding: 0 0 15px;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

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

  .market-grid,
  .feature-grid,
  .node-row {
    grid-template-columns: 1fr;
  }

  .ticker-section,
  .feature-section,
  .architecture {
    padding: 58px 0;
  }

  .arch-diagram {
    padding: 16px;
  }

  .node.major {
    width: 100%;
  }

  .cta {
    margin-top: 44px;
    margin-bottom: 70px;
    padding: 54px 20px;
  }

  .footer {
    flex-direction: column;
  }
}

/* 2026-09-08：行情卡默认 4 张，点「更多行情」展开（.expanded） */
.market-card.extra { display: none; }
.market-grid.expanded .market-card.extra { display: block; }