:root {
  color-scheme: dark;
  font-family: "Geist", "Inter", "Segoe UI", sans-serif;
  --bg: #111217;
  --panel: #1c1c25;
  --surface: #22232e;
  --line: #393947;
  --text: #f5f4fa;
  --muted: #bbbacb;
  --accent: #d2c3ff;
  --ink: #1f1535;
  background: var(--bg);
  color: var(--text);
}

* { box-sizing: border-box; }

html { scroll-padding-top: 1.5rem; }

body { margin: 0; min-width: 17rem; }

a { color: inherit; }

a:focus-visible {
  outline: 3px solid #a2ddeb;
  outline-offset: 5px;
  border-radius: .2rem;
}

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

.page { width: min(100% - 3rem, 72rem); margin-inline: auto; }

.skip-link {
  position: absolute;
  top: 1rem;
  left: 1rem;
  z-index: 1;
  padding: .75rem 1rem;
  background: var(--accent);
  color: var(--ink);
  transform: translateY(-180%);
}

.skip-link:focus { transform: none; }

.topbar {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: .8rem 1.5rem;
  min-height: 5rem;
  padding-block: .85rem;
  border-bottom: 1px solid var(--line);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: .7rem;
  font-size: 1.1rem;
  font-weight: 700;
  text-decoration: none;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 2rem;
  height: 2rem;
  border-radius: .55rem;
  background: var(--accent);
  color: var(--ink);
  font-size: 1.08rem;
}

nav { display: flex; flex-wrap: wrap; gap: .7rem 1.5rem; }

nav a, .footer a { color: var(--muted); font-size: .92rem; text-underline-offset: .22em; }
nav a { text-decoration: none; }
nav a:hover, .footer a:hover { color: var(--text); text-decoration: underline; }

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.04fr) minmax(0, .96fr);
  align-items: center;
  gap: clamp(2.5rem, 7vw, 6rem);
  padding-block: clamp(3.2rem, 9vw, 7.5rem);
}

h1 {
  max-width: 12ch;
  font-size: clamp(2.75rem, 6.45vw, 5.6rem);
  font-weight: 740;
  line-height: 1.02;
  letter-spacing: -.065em;
}

.hero-copy > p {
  max-width: 37ch;
  margin-top: 1.5rem;
  font-size: clamp(1.05rem, 2vw, 1.2rem);
  line-height: 1.6;
  color: var(--muted);
}

.actions { display: flex; flex-wrap: wrap; gap: .7rem; margin-top: 1.8rem; }

.button {
  display: inline-flex;
  min-height: 2.9rem;
  align-items: center;
  justify-content: center;
  gap: .65rem;
  padding: .7rem 1rem;
  border: 1px solid transparent;
  border-radius: .6rem;
  font-weight: 670;
  line-height: 1.3;
  text-decoration: none;
}

.primary { background: var(--accent); color: var(--ink); }
.primary:hover { background: #e4d9ff; }
.secondary { background: var(--surface); border-color: var(--line); }
.secondary:hover { border-color: var(--muted); }

.preview {
  padding: clamp(1.25rem, 4vw, 2rem);
  border: 1px solid #4d455e;
  border-radius: 1.25rem;
  background: radial-gradient(110% 95% at 83% 0, #30263f, transparent 74%), var(--panel);
  box-shadow: 0 2rem 5rem #0005;
}

.preview-head { display: flex; align-items: flex-start; justify-content: space-between; gap: .7rem; }
.preview-title { font-size: 1.2rem; font-weight: 700; }
.preview-note { margin-top: .3rem; color: var(--muted); font-size: .86rem; }
.currency { padding: .22rem .45rem; border: 1px solid #5a4c70; border-radius: .35rem; color: var(--accent); font-size: .78rem; }
.preview-result { display: grid; gap: .45rem; margin: 2.1rem 0 1.7rem; color: var(--muted); }
.preview-result strong { color: var(--text); font-size: clamp(2rem, 4vw, 3.05rem); letter-spacing: -.045em; }
.preview-rows { display: grid; gap: 1.12rem; margin: 0; }
.preview-rows > div { display: grid; grid-template-columns: 1fr auto; gap: .5rem 1rem; }
.preview-rows dt { color: var(--muted); }
.preview-rows dd { margin: 0; font-variant-numeric: tabular-nums; }
.bar { grid-column: 1 / -1; height: .4rem; border-radius: 1rem; }
.income { width: 100%; background: #cdbafa; }
.expenses { width: 42.6%; background: #88cbcc; }

.section { margin-bottom: clamp(2.25rem, 6vw, 4.5rem); }
h2 { font-size: clamp(1.6rem, 3.7vw, 2.4rem); line-height: 1.12; letter-spacing: -.035em; }
h3 { margin-top: .9rem; font-size: 1.12rem; line-height: 1.3; }

.features {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
  margin-top: 1.35rem;
}

.features article {
  padding: 1.25rem;
  border: 1px solid var(--line);
  border-radius: .8rem;
  background: var(--panel);
}

.feature-mark {
  display: grid;
  place-items: center;
  width: 2rem;
  height: 2rem;
  border: 1px solid #55476d;
  border-radius: .45rem;
  background: #302640;
  color: var(--accent);
  font-size: 1.13rem;
}

.features p, .edition p { margin-top: .6rem; color: var(--muted); line-height: 1.6; }

.edition {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(0, .75fr);
  gap: clamp(1.75rem, 5vw, 4rem);
  padding: clamp(1.35rem, 4vw, 2.5rem);
  border: 1px solid #55476d;
  border-radius: 1rem;
  background: linear-gradient(120deg, #262034, var(--panel) 70%);
}

.edition .scope { margin-top: 1rem; font-size: .94rem; }
.edition .price { display: flex; flex-wrap: wrap; align-items: baseline; gap: .2rem .65rem; margin: 0; }
.price strong { color: var(--text); font-size: clamp(2.2rem, 5.25vw, 3.6rem); letter-spacing: -.055em; line-height: 1.05; }
.edition-price .button { margin-top: 1rem; }

.footer {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: .6rem 1.2rem;
  padding-block: 1.5rem 2rem;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: .92rem;
}

@media (max-width: 51rem) {
  .hero { grid-template-columns: 1fr; }
  .preview { width: min(100%, 33rem); }
}

@media (max-width: 43rem) {
  .features, .edition { grid-template-columns: 1fr; }
}

@media (max-width: 23rem) {
  .page { width: calc(100% - 2rem); }
  .topbar { padding-block: 1rem; }
  .actions { display: grid; justify-items: start; }
}