:root {
  --ink: #141827;
  --muted: #657083;
  --line: #e7eaf1;
  --paper: #ffffff;
  --soft: #f6f7fb;
  --pink: #f366a7;
  --violet: #6d5df5;
  --mint: #45c9b4;
  --amber: #f4a74a;
  --blue: #2447d8;
  --shadow: 0 24px 70px rgba(20, 24, 39, 0.14);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    sans-serif;
  color: var(--ink);
  background: var(--paper);
}

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

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 20;
  width: 100%;
  height: 76px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 clamp(20px, 5vw, 72px);
  transition: background 180ms ease, box-shadow 180ms ease, border-color 180ms ease;
  border-bottom: 1px solid transparent;
}

.site-header[data-scrolled="true"] {
  background: rgba(255, 255, 255, 0.92);
  border-color: rgba(231, 234, 241, 0.9);
  box-shadow: 0 12px 30px rgba(20, 24, 39, 0.08);
  backdrop-filter: blur(18px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 21px;
}

.brand img {
  width: 38px;
  height: 38px;
  object-fit: contain;
}

.nav {
  display: flex;
  align-items: center;
  gap: clamp(16px, 3vw, 34px);
  color: #394154;
  font-size: 14px;
  font-weight: 700;
}

.nav a {
  position: relative;
  padding: 8px 0;
}

.nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 2px;
  background: var(--pink);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 160ms ease;
}

.nav a:hover::after {
  transform: scaleX(1);
}

.header-action,
.primary-action,
.secondary-action {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  border-radius: 6px;
  font-weight: 800;
}

.header-action {
  padding: 0 18px;
  background: var(--ink);
  color: #fff;
  font-size: 14px;
}

.hero {
  position: relative;
  min-height: 92vh;
  padding: 132px clamp(20px, 7vw, 92px) 112px;
  display: flex;
  align-items: center;
  overflow: hidden;
  isolation: isolate;
}

.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background: url("./assets/logo.png") right 8vw center / min(48vw, 520px) auto no-repeat;
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: -2;
  background:
    radial-gradient(circle at 84% 30%, rgba(243, 102, 167, 0.28), transparent 34%),
    radial-gradient(circle at 72% 74%, rgba(69, 201, 180, 0.22), transparent 28%),
    linear-gradient(135deg, #fff8fb 0%, #f6f8ff 48%, #fff5e8 100%);
}

.hero-content {
  width: min(720px, 100%);
}

.hero-mark {
  width: 72px;
  height: 72px;
  display: grid;
  place-items: center;
  margin-bottom: 26px;
  background: rgba(255, 255, 255, 0.78);
  border: 1px solid rgba(255, 255, 255, 0.9);
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.hero-mark img {
  width: 56px;
  height: 56px;
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--pink);
  font-size: 13px;
  font-weight: 900;
  letter-spacing: 0;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  margin-bottom: 20px;
  max-width: 680px;
  font-size: clamp(64px, 11vw, 148px);
  line-height: 0.88;
  letter-spacing: 0;
}

.hero-copy {
  width: min(620px, 100%);
  color: #30384b;
  font-size: clamp(18px, 2vw, 23px);
  line-height: 1.55;
}

.hero-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 34px;
}

.primary-action {
  padding: 0 24px;
  background: var(--violet);
  color: #fff;
  box-shadow: 0 16px 32px rgba(109, 93, 245, 0.26);
}

.secondary-action {
  padding: 0 22px;
  background: rgba(255, 255, 255, 0.78);
  border: 1px solid rgba(101, 112, 131, 0.24);
}

.hero-strip {
  position: absolute;
  left: clamp(20px, 7vw, 92px);
  right: clamp(20px, 7vw, 92px);
  bottom: 22px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  overflow: hidden;
  border: 1px solid rgba(231, 234, 241, 0.88);
  border-radius: 8px;
  background: var(--line);
  box-shadow: 0 18px 50px rgba(20, 24, 39, 0.1);
}

.hero-strip div {
  min-height: 86px;
  padding: 18px 22px;
  background: rgba(255, 255, 255, 0.88);
}

.hero-strip span {
  display: block;
  margin-bottom: 8px;
  color: var(--muted);
  font-size: 13px;
  font-weight: 700;
}

.hero-strip strong {
  font-size: 26px;
}

.section {
  padding: clamp(76px, 10vw, 128px) clamp(20px, 7vw, 92px);
}

.section-heading {
  display: grid;
  grid-template-columns: 0.8fr 1.35fr 1fr;
  gap: clamp(22px, 4vw, 54px);
  align-items: start;
  margin-bottom: 42px;
}

.section-heading.compact {
  display: block;
  margin-bottom: 0;
}

.section-heading h2,
.principles-copy h2 {
  margin-bottom: 0;
  font-size: clamp(34px, 5vw, 68px);
  line-height: 1.02;
  letter-spacing: 0;
}

.section-heading p:not(.eyebrow),
.principles-copy p {
  color: var(--muted);
  font-size: 17px;
  line-height: 1.7;
}

.market-section {
  background: var(--paper);
}

.market-grid {
  border: 1px solid var(--line);
  border-radius: 8px;
  overflow: hidden;
}

.market-row {
  min-height: 92px;
  display: grid;
  grid-template-columns: 58px 1fr minmax(110px, auto) 88px;
  gap: 18px;
  align-items: center;
  padding: 18px 22px;
  background: #fff;
  border-bottom: 1px solid var(--line);
}

.market-row:last-child {
  border-bottom: 0;
}

.coin {
  width: 48px;
  height: 48px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  color: #fff;
  font-weight: 900;
}

.usdt {
  background: #26a17b;
}

.usdc {
  background: var(--blue);
}

.btc {
  background: var(--amber);
}

.eth {
  background: #627eea;
}

.market-row h3 {
  margin-bottom: 4px;
  font-size: 18px;
}

.market-row p {
  margin: 0;
  color: var(--muted);
}

.market-row strong {
  font-size: 24px;
  text-align: right;
}

.market-row em {
  font-style: normal;
  font-weight: 900;
  text-align: right;
}

.up {
  color: #138a63;
}

.down {
  color: #c74158;
}

.flat {
  color: #7f8797;
}

.split-section {
  display: grid;
  grid-template-columns: minmax(260px, 0.9fr) minmax(320px, 1.35fr);
  gap: clamp(34px, 7vw, 96px);
  background: var(--soft);
}

.guide-list {
  display: grid;
  gap: 16px;
}

.guide-list article,
.brief-grid article {
  padding: 26px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
}

.guide-list span {
  display: inline-block;
  margin-bottom: 28px;
  color: var(--mint);
  font-weight: 900;
}

.guide-list h3,
.brief-grid h3 {
  font-size: 22px;
  line-height: 1.25;
}

.guide-list p,
.brief-grid p {
  margin-bottom: 0;
  color: var(--muted);
  line-height: 1.65;
}

.briefs-section {
  background: #fff;
}

.brief-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.brief-grid time {
  display: block;
  margin-bottom: 28px;
  color: var(--pink);
  font-size: 13px;
  font-weight: 900;
}

.principles-section {
  display: grid;
  grid-template-columns: minmax(260px, 1fr) minmax(260px, 0.9fr);
  gap: clamp(28px, 6vw, 84px);
  background: #151927;
  color: #fff;
}

.principles-copy p {
  color: #c8cfdd;
}

.principle-list {
  align-self: end;
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid rgba(255, 255, 255, 0.15);
}

.principle-list li {
  padding: 20px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.15);
  color: #f5f7ff;
  font-weight: 800;
}

.site-footer {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 28px;
  padding: 44px clamp(20px, 7vw, 92px);
  background: #fff;
  border-top: 1px solid var(--line);
}

.footer-brand {
  margin-bottom: 14px;
}

.site-footer p {
  margin-bottom: 0;
  color: var(--muted);
  line-height: 1.65;
}

.contact-line {
  margin-top: 10px;
}

.contact-line a {
  color: var(--ink);
  font-weight: 800;
}

.disclaimer {
  justify-self: end;
  width: min(620px, 100%);
}

@media (max-width: 900px) {
  .site-header {
    height: auto;
    min-height: 70px;
    padding: 14px 20px;
  }

  .nav,
  .header-action {
    display: none;
  }

  .hero {
    min-height: 88vh;
    padding: 110px 20px 158px;
  }

  .hero::after {
    background: url("./assets/logo.png") center bottom 90px / min(80vw, 360px) auto no-repeat;
    opacity: 0.82;
  }

  .hero-strip,
  .section-heading,
  .split-section,
  .brief-grid,
  .principles-section,
  .site-footer {
    grid-template-columns: 1fr;
  }

  .hero-strip {
    left: 20px;
    right: 20px;
    bottom: 16px;
  }

  .hero-strip div {
    min-height: 70px;
    padding: 14px 16px;
  }

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

  .market-row {
    grid-template-columns: 46px 1fr;
    gap: 14px;
  }

  .market-row strong,
  .market-row em {
    grid-column: 2;
    text-align: left;
  }

  .coin {
    width: 42px;
    height: 42px;
  }

  .disclaimer {
    justify-self: start;
  }
}

@media (max-width: 520px) {
  h1 {
    font-size: 60px;
  }

  .hero-actions {
    display: grid;
  }

  .primary-action,
  .secondary-action {
    width: 100%;
  }

  .hero-strip {
    font-size: 13px;
  }
}