:root {
  --color-bg: #ffffff;
  --color-bg-alt: #f7f8fa;
  --color-text: #0d0f14;
  --color-text-muted: #4b5261;
  --color-border: #e1e4e8;
  --color-accent: #1f6feb;
  --color-accent-soft: rgba(31, 111, 235, 0.1);
  --color-disclaimer-bg: #fff8e6;
  --color-disclaimer-border: #d9a441;
  --color-dark-bg: #05070d;
  --color-dark-bg-2: #0d1526;
  --color-dark-text: #eef1f6;
  --color-dark-text-muted: #8d96ab;
  --color-dark-border: rgba(255, 255, 255, 0.12);
  --font-mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;
  --max-width: 780px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.6;
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px;
  position: relative;
}

/* Header */

.site-header {
  border-bottom: 1px solid var(--color-border);
  padding: 20px 0;
}

.site-header .container {
  display: flex;
  flex-direction: column;
  gap: 12px;
  align-items: flex-start;
}

.brand {
  font-size: 1.15rem;
  font-weight: 800;
  font-family: var(--font-mono);
  display: flex;
  align-items: center;
  gap: 8px;
}

.brand::before {
  content: "";
  width: 9px;
  height: 9px;
  background: var(--color-accent);
  transform: rotate(45deg);
  flex: none;
}

.site-nav {
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
  font-family: var(--font-mono);
}

.site-nav a {
  color: var(--color-text-muted);
  text-decoration: none;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.site-nav a:hover {
  color: var(--color-accent);
  text-decoration: underline;
}

/* Eyebrow label */

.eyebrow {
  color: var(--color-accent);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin: 0 0 14px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.eyebrow::before {
  content: "";
  width: 7px;
  height: 7px;
  background: var(--color-accent);
  flex: none;
}

.section-dark .eyebrow {
  color: #6ea8ff;
}

.section-dark .eyebrow::before {
  background: #6ea8ff;
}

/* Hero */

.hero {
  padding: 72px 0 48px;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: radial-gradient(var(--color-border) 1px, transparent 1px);
  background-size: 22px 22px;
  -webkit-mask-image: radial-gradient(ellipse 70% 60% at 85% 15%, black, transparent 70%);
  mask-image: radial-gradient(ellipse 70% 60% at 85% 15%, black, transparent 70%);
  pointer-events: none;
}

.hero::after {
  content: "";
  position: absolute;
  top: -160px;
  right: -140px;
  width: 420px;
  height: 420px;
  border-radius: 50%;
  background: radial-gradient(circle, var(--color-accent-soft), transparent 70%);
  pointer-events: none;
}

.hero .container {
  z-index: 1;
}

.hero h1 {
  font-size: 2.1rem;
  line-height: 1.15;
  letter-spacing: -0.01em;
  margin: 0 0 20px;
  font-weight: 800;
  max-width: 12ch;
}

.hero .lead {
  font-size: 1.05rem;
  color: var(--color-text-muted);
  margin: 0 0 28px;
  max-width: 56ch;
}

.hero-cta {
  display: flex;
  align-items: center;
  gap: 24px;
  flex-wrap: wrap;
}

.button {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 20px;
  border-radius: 0;
  font-weight: 700;
  font-size: 0.82rem;
  text-decoration: none;
  font-family: var(--font-mono);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.button::after,
.button-link::after {
  content: "\2197";
}

.button-primary {
  background: var(--color-accent);
  color: #ffffff;
}

.button-primary:hover {
  background: #1a5fc9;
}

.button-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--color-accent);
  text-decoration: none;
  font-weight: 700;
  font-size: 0.82rem;
  font-family: var(--font-mono);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.button-link:hover {
  text-decoration: underline;
}

/* Sections */

.section {
  padding: 56px 0;
  border-top: 1px dashed var(--color-border);
  position: relative;
}

.section::before {
  content: "+";
  position: absolute;
  top: -8px;
  left: 20px;
  color: var(--color-border);
  font-size: 0.9rem;
  line-height: 1;
  background: var(--color-bg);
  padding: 0 4px;
}

.section-dark::before {
  color: var(--color-dark-border);
  background: var(--color-dark-bg);
}

.section h2 {
  font-size: 1.7rem;
  margin: 0 0 16px;
  font-weight: 800;
  letter-spacing: -0.01em;
  max-width: 22ch;
}

.policy h2 {
  max-width: none;
}

.policy p {
  max-width: 68ch;
}

.policy-hero h1 {
  font-size: 2.2rem;
  font-weight: 800;
  letter-spacing: -0.01em;
  margin: 0 0 12px;
}

.policy-updated {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--color-text-muted);
  margin: 0 0 20px;
}

.detail-list {
  padding-left: 20px;
  margin: 0 0 20px;
}

.detail-list li {
  margin-bottom: 10px;
}

/* Dark section variant */

.section-dark {
  background: linear-gradient(180deg, var(--color-dark-bg) 0%, var(--color-dark-bg-2) 100%);
  color: var(--color-dark-text);
  border-top: 1px dashed var(--color-dark-border);
}

.section-dark p {
  color: var(--color-dark-text-muted);
}

.section-dark h2,
.section-dark h3 {
  color: var(--color-dark-text);
}

/* Flow diagram ("How it works") */

.flow {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
  margin-top: 32px;
}

.flow-icon {
  width: 44px;
  height: 44px;
  border: 1px dashed #3d6fd6;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 14px;
  color: #6ea8ff;
}

.flow-icon svg {
  width: 20px;
  height: 20px;
}

.flow-step h3 {
  font-size: 1.02rem;
  margin: 0 0 8px;
  font-weight: 700;
}

.flow-step p {
  font-size: 0.92rem;
  margin: 0;
}

/* Numbered steps ("How it works") */

.steps {
  display: flex;
  gap: 32px;
  flex-wrap: wrap;
  margin-top: 32px;
}

.step {
  flex: 1 1 200px;
  min-width: 180px;
}

.step-head {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 12px;
}

.crosshair {
  width: 14px;
  height: 14px;
  color: var(--color-accent);
  flex: none;
}

.step-number {
  font-family: var(--font-mono);
  color: var(--color-accent);
  font-size: 0.85rem;
  font-weight: 700;
}

.step h3 {
  font-size: 1.02rem;
  margin: 0 0 10px;
  font-weight: 700;
}

.rule {
  border-top: 1px dashed var(--color-border);
  margin: 0 0 12px;
}

.step p {
  font-size: 0.92rem;
  color: var(--color-text-muted);
  margin: 0;
}

/* Disclaimer callout */

.disclaimer {
  background: var(--color-disclaimer-bg);
  border: 1px dashed var(--color-disclaimer-border);
  padding: 16px 18px;
  margin: 0;
}

.disclaimer p {
  margin: 0;
  font-size: 0.95rem;
  color: var(--color-text);
}

.section-dark .disclaimer p {
  color: var(--color-text);
}

/* Footer */

.site-footer {
  border-top: 1px dashed var(--color-border);
  padding: 40px 0 32px;
  background: var(--color-bg-alt);
}

.footer-top {
  display: flex;
  flex-direction: column;
  gap: 24px;
  padding-bottom: 24px;
}

.footer-brand .brand {
  margin-bottom: 6px;
}

.footer-brand p {
  color: var(--color-text-muted);
  font-size: 0.9rem;
  margin: 0;
}

.footer-nav {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  font-family: var(--font-mono);
}

.footer-nav a {
  color: var(--color-text-muted);
  text-decoration: none;
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.footer-nav a:hover {
  color: var(--color-accent);
  text-decoration: underline;
}

.footer-bottom {
  border-top: 1px dashed var(--color-border);
  padding-top: 20px;
}

.footer-bottom p {
  color: var(--color-text-muted);
  font-size: 0.85rem;
  margin: 0;
  font-family: var(--font-mono);
}

.footer-bottom a {
  color: var(--color-text-muted);
}

/* Responsive: comfortable reading width above ~640px, single column below it */

@media (min-width: 480px) {
  .flow {
    grid-template-columns: repeat(2, 1fr);
    column-gap: 24px;
  }
}

@media (min-width: 640px) {
  .hero h1 {
    font-size: 3rem;
    max-width: 11ch;
  }

  .site-header .container {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
  }

  .footer-top {
    flex-direction: row;
    justify-content: space-between;
    align-items: flex-start;
  }
}

@media (max-width: 639px) {
  .container {
    padding: 0 16px;
  }

  .hero {
    padding: 44px 0 32px;
  }

  .hero h1 {
    max-width: none;
  }

  .section {
    padding: 40px 0;
  }

  .steps {
    gap: 24px;
  }
}