:root {
  --bg: #f1f2f5;
  --surface: #ffffff;
  --surface-2: #e7e9ed;
  --border: #dadde2;
  --border-strong: #c2c6cf;
  --text: #12151a;
  --muted: #666c78;
  --muted-2: #888e99;
  --accent: #e85d24;
  --positive: #0a8f5b;
  --negative: #c0392b;

  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
}

* {
  box-sizing: border-box;
}

html, body {
  margin: 0;
  padding: 0;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  font-weight: 400;
  min-height: 100vh;
  overflow-x: hidden;
}

a {
  color: inherit;
}

/* --- layout container --- */

.container {
  max-width: 1360px;
  margin-inline: auto;
  padding-inline: clamp(24px, 5vw, 64px);
}

/* --- header --- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--border);
}

.site-header-inner {
  width: 100%;
  padding-block: 1.15rem;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 1rem;
}

.header-zone {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.header-left {
  justify-self: start;
}

.header-center {
  justify-self: center;
}

.header-right {
  justify-self: end;
}

.icon-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border: 1px solid var(--border);
  border-radius: 9px;
  color: var(--muted);
  text-decoration: none;
  font-size: 1rem;
  line-height: 1;
  transition: border-color 0.2s ease, color 0.2s ease;
}

.icon-btn:hover {
  border-color: var(--accent);
  color: var(--text);
}

.wordmark {
  font-family: var(--font-sans);
  font-size: 2.1rem;
  font-weight: 700;
  letter-spacing: -0.8px;
  text-decoration: none;
  color: var(--text);
  text-align: center;
}

.wordmark .k {
  color: var(--accent);
}

.btn-outline {
  border: 1px solid var(--border-strong);
  color: var(--text);
  text-decoration: none;
  font-family: var(--font-sans);
  font-size: 0.92rem;
  font-weight: 600;
  padding: 0.6rem 1.3rem;
  border-radius: 8px;
  transition: border-color 0.2s ease, background 0.2s ease;
  white-space: nowrap;
}

.btn-outline:hover {
  border-color: var(--muted);
  background: var(--surface-2);
}

/* --- menu bar --- */

.menu-bar {
  width: 100%;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}

.menu-bar-inner {
  display: flex;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
  gap: 32px;
  padding-block: 0.85rem;
}

.menu-link {
  font-family: var(--font-sans);
  text-decoration: none;
  color: var(--muted);
  font-size: 14px;
  font-weight: 400;
  letter-spacing: 0.02em;
  white-space: nowrap;
  transition: color 0.2s ease;
}

.menu-link:hover {
  color: var(--text);
}

.menu-link.active {
  color: var(--text);
  font-weight: 500;
}

@media (max-width: 640px) {
  .site-header-inner {
    gap: 0.6rem;
  }
  .wordmark {
    font-size: 1.3rem;
  }
  .header-zone {
    gap: 0.4rem;
  }
  .icon-btn {
    width: 30px;
    height: 30px;
    font-size: 0.8rem;
  }
  .menu-bar-inner {
    gap: 12px;
    justify-content: flex-start;
    overflow-x: auto;
  }
  .menu-link {
    font-size: 11px;
  }
}

/* --- hero --- */

.hero {
  position: relative;
  background: var(--bg);
  text-align: center;
  padding-block: 100px 76px;
  overflow: hidden;
}

.hero h1 {
  position: relative;
  z-index: 1;
  max-width: 820px;
  margin: 0 auto;
  font-family: var(--font-sans);
  font-size: 62px;
  font-weight: 700;
  letter-spacing: -2px;
  line-height: 1.08;
}

@media (max-width: 640px) {
  .hero h1 {
    font-size: 34px;
    letter-spacing: -1px;
  }
}

.hero-subtitle {
  position: relative;
  z-index: 1;
  max-width: 560px;
  margin: 1.25rem auto 0;
  color: var(--muted);
  font-size: 18px;
  font-weight: 400;
}

.search-bar {
  position: relative;
  z-index: 1;
  max-width: 640px;
  margin: 2.75rem auto 0;
  display: flex;
  gap: 0.75rem;
}

.search-bar input {
  flex: 1;
  background: var(--surface);
  border: 1px solid var(--border-strong);
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 1.05rem;
  padding: 1rem 1.25rem;
  border-radius: 12px;
  outline: none;
  min-width: 0;
}

.search-bar input:focus {
  border-color: var(--accent);
}

.search-bar input::placeholder {
  color: var(--muted-2);
}

.btn-accent {
  background: var(--accent);
  color: #ffffff;
  border: none;
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 1.05rem;
  padding: 1rem 1.6rem;
  border-radius: 12px;
  cursor: pointer;
  white-space: nowrap;
  transition: opacity 0.2s ease;
}

.btn-accent:hover {
  opacity: 0.9;
}

.chips {
  position: relative;
  z-index: 1;
  margin-top: 1.75rem;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: 1.5rem;
}

.chips-label {
  font-family: var(--font-sans);
  color: var(--muted);
  font-size: 0.92rem;
  margin-right: 0.2rem;
}

.chip {
  background: none;
  border: none;
  border-bottom: 1px solid var(--border-strong);
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 0.92rem;
  font-weight: 500;
  padding: 0 0 2px;
  cursor: pointer;
  border-radius: 0;
  transition: border-color 0.2s ease, color 0.2s ease;
}

.chip:hover {
  border-color: var(--accent);
  color: var(--text);
}

/* --- asset preview --- */

.asset-preview {
  position: relative;
  z-index: 1;
  max-width: 640px;
  margin: 1.5rem auto 0;
  text-align: left;
}

.asset-preview[hidden] {
  display: none;
}

.asset-preview-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 1.4rem 1.6rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.asset-preview-main {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

.asset-preview-id {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
  min-width: 0;
}

.asset-preview-ticker {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 1.15rem;
}

.asset-preview-name {
  font-family: var(--font-sans);
  font-size: 0.85rem;
  color: var(--muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.asset-preview-price {
  display: flex;
  align-items: baseline;
  gap: 0.7rem;
  font-family: var(--font-mono);
}

.asset-preview-price .val {
  font-weight: 700;
  font-size: 1.3rem;
}

.asset-preview-price .chg.pos {
  color: var(--positive);
  font-weight: 700;
  font-size: 1rem;
}

.asset-preview-price .chg.neg {
  color: var(--negative);
  font-weight: 700;
  font-size: 1rem;
}

.asset-preview-cta {
  align-self: flex-start;
  font-size: 0.85rem;
  padding: 0.6rem 1.1rem;
}

.preview-status {
  margin: 0;
  color: var(--muted);
  font-size: 0.95rem;
}

.preview-status.error {
  color: var(--negative);
}

/* --- main wrap --- */

.wrap {
  width: 100%;
  padding-block: 4rem;
}

/* --- section headings --- */

.eyebrow {
  display: block;
  font-family: var(--font-sans);
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--muted-2);
  margin: 0 0 0.9rem;
}

.section-title {
  font-family: var(--font-sans);
  font-size: 42px;
  font-weight: 700;
  letter-spacing: -1px;
  line-height: 1.15;
  color: var(--text);
  margin: 0 0 0.9rem;
}

.section-desc {
  font-family: var(--font-sans);
  font-size: 16px;
  color: var(--muted);
  line-height: 1.6;
  max-width: 620px;
  margin: 0;
}

@media (max-width: 640px) {
  .section-title {
    font-size: 28px;
  }
}

/* --- ecosystem --- */

.ecosystem {
  margin-block: 96px;
}

.eco-grid {
  margin-top: 2.75rem;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.75rem;
}

.eco-card {
  display: flex;
  flex-direction: column;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 2.5rem 2.25rem;
  text-decoration: none;
  color: var(--text);
  transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

.eco-card:hover,
.eco-card:focus-visible {
  border-color: var(--border-strong);
  transform: translateY(-4px);
  box-shadow: 0 20px 40px -24px rgba(22, 25, 29, 0.2);
}

.eco-index {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 1px;
  color: var(--muted-2);
  margin-bottom: 1.5rem;
}

.eco-card-title {
  font-family: var(--font-sans);
  font-size: 26px;
  font-weight: 700;
  margin: 0 0 0.85rem;
  color: var(--text);
}

.eco-card-desc {
  font-family: var(--font-sans);
  font-size: 15px;
  color: var(--muted);
  line-height: 1.65;
  margin: 0 0 2rem;
  flex: 1;
}

.eco-card-cta {
  align-self: flex-start;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-family: var(--font-sans);
  font-size: 15px;
  font-weight: 600;
  color: var(--accent);
}

.eco-card-cta .arrow {
  transition: transform 0.2s ease;
}

.eco-card:hover .eco-card-cta .arrow,
.eco-card:focus-visible .eco-card-cta .arrow {
  transform: translateX(4px);
}

/* --- footer --- */

.site-footer {
  width: 100%;
  background: var(--surface);
  border-top: 1px solid var(--border);
  text-align: center;
  color: var(--muted);
  font-family: var(--font-sans);
  font-size: 0.85rem;
  padding-block: 2.5rem 3.5rem;
}

.site-footer .social {
  margin-top: 0.5rem;
}

.site-footer .social a {
  color: var(--muted);
  text-decoration: none;
  margin: 0 0.4rem;
}

.site-footer .social a:hover {
  color: var(--accent);
}