:root {
  --black: #000;
  --white: #fff;
  --gray: #525252;
  --gray-light: #e5e5e5;
  --font-serif: 'Instrument Serif', Georgia, serif;
  --font-mono: 'IBM Plex Mono', ui-monospace, monospace;
  --nav-h: 72px;
}

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

html { scroll-behavior: smooth; }

body {
  background: var(--white);
  color: var(--black);
  font-family: var(--font-serif);
  font-size: 21px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

.wrap {
  width: min(1080px, 100% - 3rem);
  margin-inline: auto;
}

a { color: inherit; text-underline-offset: 2px; }

.logo-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  text-decoration: none;
}

.logo-mark {
  width: 28px;
  height: 28px;
  flex-shrink: 0;
}

.nav .logo-mark {
  width: 26px;
  height: 26px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  list-style: none;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: lowercase;
}

.nav-links a {
  text-decoration: none;
  color: var(--gray);
}

.nav-links a:hover,
.nav-links a[aria-current="page"] {
  color: var(--black);
}

.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--nav-h);
  background: var(--white);
  border-bottom: 1px solid var(--black);
}

.nav-inner {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  font-family: var(--font-mono);
  font-size: 1.05rem;
  letter-spacing: 0.02em;
  text-transform: lowercase;
}

.label {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--gray);
  margin-bottom: 0.75rem;
}

.mono { font-family: var(--font-mono); font-size: 0.82rem; }

.hero {
  padding: 3rem 0 3.5rem;
}

.hero-brand {
  display: inline-flex;
  align-items: center;
  gap: 1rem;
  text-decoration: none;
  color: var(--black);
  margin-bottom: 1rem;
}

.hero-brand .logo-mark {
  width: clamp(48px, 10vw, 64px);
  height: clamp(48px, 10vw, 64px);
}

.hero-title {
  font-family: var(--font-mono);
  font-size: clamp(3rem, 12vw, 5.5rem);
  font-weight: 500;
  letter-spacing: -0.03em;
  line-height: 1;
  text-transform: lowercase;
}

.hero-tagline {
  font-size: clamp(1.5rem, 4vw, 2rem);
  font-weight: 400;
  letter-spacing: -0.02em;
  text-transform: lowercase;
  margin-bottom: 1.25rem;
  color: var(--black);
}

.lede {
  max-width: 34em;
  font-size: 1.25rem;
  line-height: 1.6;
  color: var(--gray);
}

.intro {
  padding-bottom: 2.5rem;
  max-width: 38em;
  font-size: 1.12rem;
  line-height: 1.65;
  color: var(--gray);
}

.intro a { color: var(--black); }

.form-section {
  padding-bottom: 4rem;
  border-bottom: 1px solid var(--black);
}

.birth-form {
  display: grid;
  gap: 1.75rem;
  max-width: 36rem;
}

.field-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
}

.field-wide { max-width: 36rem; }

.field label,
.date-fieldset legend {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--gray);
  margin-bottom: 0.6rem;
}

.date-fieldset {
  border: none;
  padding: 0;
  margin: 0;
}

.field input,
.field select {
  width: 100%;
  min-height: 48px;
  padding: 0.65rem 0;
  border: none;
  border-bottom: 1px solid var(--black);
  background: transparent;
  font-family: var(--font-mono);
  font-size: 1.05rem;
  color: var(--black);
  border-radius: 0;
  appearance: none;
}

.date-inputs {
  display: flex;
  align-items: flex-end;
  gap: 0.5rem;
  max-width: 20rem;
}

.date-part {
  flex: 1;
  min-width: 0;
}

.date-part-year { flex: 1.4; }

.date-part input {
  width: 100%;
  min-height: 48px;
  padding: 0.65rem 0;
  border: none;
  border-bottom: 1px solid var(--black);
  background: transparent;
  font-family: var(--font-mono);
  font-size: 1.05rem;
  color: var(--black);
  text-align: center;
}

.date-hint {
  display: block;
  margin-top: 0.35rem;
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--gray);
  text-align: center;
}

.date-sep {
  font-family: var(--font-mono);
  font-size: 1.1rem;
  color: var(--gray);
  padding-bottom: 1.75rem;
}

.date-part input:focus {
  outline: none;
  border-bottom-width: 2px;
}

.time-inputs {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.time-inputs select {
  flex: 1;
  min-width: 0;
  min-height: 48px;
  padding: 0.65rem 0.5rem 0.65rem 0;
  border: none;
  border-bottom: 1px solid var(--black);
  background: transparent;
  font-family: var(--font-mono);
  font-size: 1.05rem;
  color: var(--black);
  appearance: none;
  cursor: pointer;
}

.time-inputs select#time-period {
  flex: 0.85;
}

.time-sep {
  font-family: var(--font-mono);
  font-size: 1.1rem;
  color: var(--gray);
  padding-bottom: 0.65rem;
}

.form-note {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  line-height: 1.65;
  color: var(--gray);
}

.form-note-privacy {
  display: block;
  margin-top: 0.35rem;
  color: var(--black);
}

.field select {
  cursor: pointer;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='8' height='5' viewBox='0 0 8 5'%3E%3Cpath fill='%23000' d='M0 0l4 5 4-5z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.25rem center;
  padding-right: 1.25rem;
}

.field input:focus,
.field select:focus {
  outline: none;
  border-bottom-width: 2px;
}

.btn {
  justify-self: start;
  padding: 1rem 2.25rem;
  border: 1px solid var(--black);
  background: var(--black);
  color: var(--white);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  cursor: pointer;
  transition: background 0.15s, color 0.15s;
}

.btn:hover:not(:disabled) {
  background: var(--white);
  color: var(--black);
}

.btn:disabled {
  opacity: 0.4;
  cursor: wait;
}

.error {
  margin-top: 1.5rem;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--black);
}

.results {
  padding-top: 3rem;
  padding-bottom: 5rem;
}

.meta-bar {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
  padding-bottom: 3rem;
  border-bottom: 1px solid var(--gray-light);
}

.meta-item {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.meta-val {
  font-size: 1rem;
  line-height: 1.45;
}

.charts-grid {
  display: grid;
  grid-template-columns: 1fr 1px 1fr;
  border-bottom: 1px solid var(--black);
  margin-bottom: 4rem;
}

.chart-divider {
  background: var(--black);
  width: 1px;
}

.chart-panel {
  padding: 3rem min(3rem, 5vw);
}

.panel-head {
  margin-bottom: 2rem;
}

.panel-head h2 {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  margin-bottom: 0.5rem;
}

.panel-head p {
  font-size: 1.08rem;
  color: var(--gray);
  max-width: 24em;
  line-height: 1.5;
}

.chart-wrap {
  display: flex;
  justify-content: center;
  margin-bottom: 2.5rem;
}

.chart-svg {
  width: 100%;
  max-width: 420px;
  height: auto;
}

.chart-ring {
  fill: none;
  stroke: var(--black);
  stroke-width: 0.5;
}

.chart-ring-outer {
  stroke-width: 1;
}

.chart-ring-inner {
  stroke-width: 0.4;
  opacity: 0.35;
}

.chart-ring-center {
  stroke-width: 0.35;
  opacity: 0.2;
}

.chart-marker {
  fill: var(--black);
}

.chart-tick {
  stroke: var(--black);
  stroke-width: 0.25;
  opacity: 0.18;
}

.chart-tick-ten {
  stroke-width: 0.35;
  opacity: 0.32;
}

.chart-tick-sign {
  stroke-width: 0.55;
  opacity: 0.55;
}

.chart-house-line {
  stroke: var(--black);
  stroke-width: 0.35;
  opacity: 0.22;
}

.chart-sign-glyph {
  font-family: var(--font-serif);
  font-size: 13px;
  fill: var(--black);
}

.chart-sign-abbr {
  font-family: var(--font-mono);
  font-size: 5.5px;
  fill: var(--black);
  letter-spacing: 0.14em;
  opacity: 0.45;
}

.chart-house-num {
  font-family: var(--font-mono);
  font-size: 8px;
  fill: var(--black);
  opacity: 0.35;
  letter-spacing: 0.04em;
}

.chart-axis {
  stroke: var(--black);
  stroke-width: 1;
}

.chart-axis-label {
  font-family: var(--font-mono);
  font-size: 7px;
  fill: var(--black);
  letter-spacing: 0.12em;
  font-weight: 500;
}

.chart-aspect {
  stroke: var(--black);
  stroke-width: 0.35;
}

.chart-aspect.aspect-conj { stroke-width: 0.5; opacity: 0.55; }
.chart-aspect.aspect-opp { stroke-dasharray: 5 3; opacity: 0.4; }
.chart-aspect.aspect-sq { stroke-dasharray: 2 2; opacity: 0.38; }
.chart-aspect.aspect-tri { opacity: 0.28; }
.chart-aspect.aspect-sext { stroke-dasharray: 1 3; opacity: 0.3; }

.planet-leader {
  stroke: var(--black);
  stroke-width: 0.25;
  opacity: 0.2;
}

.planet-halo {
  fill: var(--white);
  stroke: var(--black);
  stroke-width: 0.4;
}

.planet-glyph {
  font-family: var(--font-serif);
  font-size: 11px;
  fill: var(--black);
  pointer-events: none;
}

.planet-deg {
  font-family: var(--font-mono);
  font-size: 5.5px;
  fill: var(--black);
  opacity: 0.5;
  letter-spacing: 0.02em;
  pointer-events: none;
}

.planet-tick {
  stroke: var(--black);
  stroke-width: 0.45;
}

.placements {
  width: 100%;
  border-collapse: collapse;
  font-family: var(--font-mono);
  font-size: 0.72rem;
}

.placements th,
.placements td {
  text-align: left;
  padding: 0.55rem 0;
  border-bottom: 1px solid var(--gray-light);
}

.placements th {
  font-size: 0.58rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--gray);
  font-weight: 400;
}

.placements td:last-child {
  text-align: right;
  color: var(--gray);
}

.placements .glyph {
  margin-right: 0.35rem;
  opacity: 0.6;
}

.comparison-section {
  margin-bottom: 4rem;
}

.section-title {
  font-size: clamp(1.75rem, 4vw, 2.25rem);
  font-weight: 400;
  letter-spacing: -0.02em;
  text-transform: lowercase;
  margin-bottom: 2rem;
}

.comparison-summary {
  max-width: 36em;
  font-size: 1.1rem;
  line-height: 1.6;
  color: var(--gray);
  margin-bottom: 3rem;
}

.shift-list {
  display: grid;
  gap: 0;
}

.shift-card {
  padding: 1.75rem 0;
  border-top: 1px solid var(--black);
}

.shift-card:last-child {
  border-bottom: 1px solid var(--black);
}

.shift-card header {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.75rem 2rem;
  margin-bottom: 1rem;
}

.shift-label {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.shift-arrow {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.02em;
}

.shift-readings {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
}

.shift-readings p {
  font-size: 0.95rem;
  line-height: 1.55;
  color: var(--gray);
}

.shift-readings .reading-label {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.58rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--black);
  margin-bottom: 0.4rem;
}

.unchanged {
  margin-top: 2rem;
  padding-top: 1.75rem;
  border-top: 1px solid var(--gray-light);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  line-height: 1.7;
  color: var(--gray);
}

.unchanged-label {
  display: block;
  font-size: 0.58rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--black);
  margin-bottom: 0.5rem;
}

.note {
  padding-top: 2rem;
  border-top: 1px solid var(--gray-light);
}

.note p:last-child {
  max-width: 36em;
  font-size: 0.95rem;
  line-height: 1.6;
  color: var(--gray);
}

.ad-slot {
  min-height: 0;
  margin: 2rem 0;
  overflow: hidden;
}

.ad-slot:empty {
  display: none;
}

.ad-slot-footer {
  margin-top: 1.5rem;
  margin-bottom: 0;
}

.page {
  padding: 3.5rem 0 5rem;
}

.prose {
  max-width: 36em;
}

.prose h1 {
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 400;
  letter-spacing: -0.02em;
  text-transform: lowercase;
  margin-bottom: 1.5rem;
  line-height: 1.05;
}

.prose h2 {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  font-weight: 500;
  margin-top: 2.5rem;
  margin-bottom: 0.75rem;
}

.prose p,
.prose li {
  font-size: 1.05rem;
  line-height: 1.65;
  color: var(--gray);
  margin-bottom: 1rem;
}

.prose ul {
  margin-bottom: 1rem;
  padding-left: 1.25rem;
}

.prose li { margin-bottom: 0.5rem; }

.prose strong { color: var(--black); font-weight: 400; }

.prose-meta {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--gray);
  margin-bottom: 2rem;
}

.prose-cta {
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 1px solid var(--gray-light);
}

.prose-cta a {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: lowercase;
  text-decoration: none;
}

.prose-cta a:hover { text-decoration: underline; }

.faq-list,
.glossary-list {
  margin-top: 2rem;
}

.faq-list > div,
.glossary-list > div {
  padding: 1.5rem 0;
  border-top: 1px solid var(--gray-light);
}

.faq-list > div:last-child,
.glossary-list > div:last-child {
  border-bottom: 1px solid var(--gray-light);
}

.faq-list dt,
.glossary-list dt {
  font-size: 1.1rem;
  font-weight: 400;
  color: var(--black);
  margin-bottom: 0.5rem;
  text-transform: lowercase;
}

.faq-list dd,
.glossary-list dd {
  font-size: 1rem;
  line-height: 1.65;
  color: var(--gray);
  margin: 0;
}

.faq-list dd a,
.glossary-list dd a {
  color: var(--black);
}

.footer {
  border-top: 1px solid var(--black);
  padding: 1.25rem 0 2rem;
}

.footer-grid {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1.5rem;
  flex-wrap: wrap;
}

.footer-brand {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.footer-links {
  display: flex;
  gap: 1.25rem;
  list-style: none;
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.06em;
  text-transform: lowercase;
}

.footer-links a {
  text-decoration: none;
  color: var(--gray);
}

.footer-links a:hover { color: var(--black); }

.footer-note {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.08em;
  color: var(--gray);
  text-transform: lowercase;
}

@media (max-width: 820px) {
  .charts-grid {
    grid-template-columns: 1fr;
  }

  .chart-divider {
    height: 1px;
    width: 100%;
  }

  .chart-panel {
    padding: 2.5rem 0;
  }

  .meta-bar {
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
  }

  .shift-readings {
    grid-template-columns: 1fr;
    gap: 1rem;
  }
}

@media (max-width: 540px) {
  .field-row {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  .time-inputs {
    flex-wrap: wrap;
  }

  .time-inputs select {
    flex: 1 1 calc(33% - 0.5rem);
  }

  .time-inputs select#time-period {
    flex: 1 1 100%;
  }

  .meta-bar {
    grid-template-columns: 1fr;
  }

  .nav-links { gap: 1rem; }

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