:root {
  --ink: #10231c;
  --ink-soft: #3a5248;
  --paper: #f3efe6;
  --paper-2: #e7e1d4;
  --accent: #e85d04;
  --accent-deep: #c44b00;
  --teal: #0f766e;
  --line: rgba(16, 35, 28, 0.12);
  --shadow: 0 24px 60px rgba(16, 35, 28, 0.12);
  --font-display: "Bricolage Grotesque", Georgia, serif;
  --font-body: "Manrope", system-ui, sans-serif;
  --radius: 14px;
  --max: 1120px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  font-family: var(--font-body);
  background:
    radial-gradient(1200px 600px at 85% -10%, rgba(232, 93, 4, 0.18), transparent 55%),
    radial-gradient(900px 500px at -10% 20%, rgba(15, 118, 110, 0.14), transparent 50%),
    linear-gradient(180deg, #f7f3ea 0%, var(--paper) 40%, #ebe5d8 100%);
  line-height: 1.55;
  min-height: 100vh;
}

.noise {
  pointer-events: none;
  position: fixed;
  inset: 0;
  opacity: 0.04;
  z-index: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

.top,
main,
.footer {
  position: relative;
  z-index: 1;
}

.top {
  max-width: var(--max);
  margin: 0 auto;
  padding: 1.25rem 1.5rem;
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.brand {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.15rem;
  letter-spacing: -0.02em;
  color: var(--ink);
  text-decoration: none;
}

.nav {
  display: flex;
  gap: 1.25rem;
  margin-left: auto;
}

.nav a {
  color: var(--ink-soft);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.95rem;
}

.nav a:hover {
  color: var(--ink);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: none;
  border-radius: 999px;
  padding: 0.75rem 1.35rem;
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 0.95rem;
  text-decoration: none;
  cursor: pointer;
  transition: transform 0.2s ease, background 0.2s ease, color 0.2s ease;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn-primary {
  background: var(--accent);
  color: #fff;
}

.btn-primary:hover {
  background: var(--accent-deep);
}

.btn-ghost {
  background: transparent;
  color: var(--ink);
  box-shadow: inset 0 0 0 1.5px var(--line);
}

.btn-ghost:hover {
  background: rgba(16, 35, 28, 0.04);
}

.hero {
  max-width: var(--max);
  margin: 0 auto;
  padding: 2rem 1.5rem 4rem;
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 2.5rem;
  align-items: center;
  min-height: calc(100vh - 5rem);
}

.brand-mark {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2rem, 4.5vw, 3.4rem);
  letter-spacing: -0.04em;
  line-height: 1;
  margin: 0 0 1rem;
  color: var(--teal);
  animation: rise 0.8s ease both;
}

.hero h1 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.75rem, 3.4vw, 2.6rem);
  letter-spacing: -0.03em;
  line-height: 1.15;
  margin: 0 0 1rem;
  max-width: 14ch;
  animation: rise 0.8s ease 0.08s both;
}

.lede {
  margin: 0 0 1.75rem;
  color: var(--ink-soft);
  font-size: 1.1rem;
  max-width: 36ch;
  animation: rise 0.8s ease 0.16s both;
}

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  animation: rise 0.8s ease 0.24s both;
}

.hero-visual {
  position: relative;
  min-height: 420px;
  animation: fade-in 1s ease 0.2s both;
}

.orbit {
  position: relative;
  height: 100%;
  min-height: 420px;
  display: grid;
  place-items: center;
}

.ring {
  position: absolute;
  border-radius: 50%;
  border: 1px solid rgba(15, 118, 110, 0.25);
}

.ring-a {
  width: min(90%, 420px);
  aspect-ratio: 1;
  animation: spin 28s linear infinite;
  background:
    conic-gradient(from 180deg, transparent 0 70%, rgba(232, 93, 4, 0.35) 78%, transparent 90%);
  mask: radial-gradient(farthest-side, transparent calc(100% - 2px), #000 calc(100% - 1px));
}

.ring-b {
  width: min(70%, 320px);
  aspect-ratio: 1;
  animation: spin 40s linear infinite reverse;
  border-color: rgba(232, 93, 4, 0.2);
}

.panel {
  width: min(100%, 420px);
  background: rgba(255, 252, 246, 0.92);
  backdrop-filter: blur(8px);
  border: 1px solid var(--line);
  border-radius: calc(var(--radius) + 4px);
  box-shadow: var(--shadow);
  padding: 1.25rem 1.35rem;
  transform: rotate(-1.5deg);
}

.code-block {
  margin: 0;
  font-family: ui-monospace, "Cascadia Code", Consolas, monospace;
  font-size: 0.78rem;
  line-height: 1.55;
  color: var(--ink);
  white-space: pre-wrap;
  word-break: break-word;
}

.section {
  max-width: var(--max);
  margin: 0 auto;
  padding: 4.5rem 1.5rem;
}

.section h2 {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 3vw, 2.4rem);
  letter-spacing: -0.03em;
  margin: 0 0 0.75rem;
}

.section-lead {
  margin: 0 0 2.5rem;
  color: var(--ink-soft);
  max-width: 48ch;
  font-size: 1.05rem;
}

.feature-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0;
  border-top: 1px solid var(--line);
}

.feature-list li {
  display: grid;
  grid-template-columns: 4.5rem 1fr;
  gap: 1.25rem;
  padding: 1.75rem 0;
  border-bottom: 1px solid var(--line);
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}

.feature-list li.visible {
  opacity: 1;
  transform: none;
}

.feature-index {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.4rem;
  color: var(--accent);
}

.feature-list h3 {
  margin: 0 0 0.4rem;
  font-family: var(--font-display);
  font-size: 1.25rem;
}

.feature-list p {
  margin: 0;
  color: var(--ink-soft);
  max-width: 60ch;
}

.billing {
  background: linear-gradient(135deg, rgba(15, 118, 110, 0.08), rgba(232, 93, 4, 0.06));
  border-block: 1px solid var(--line);
  max-width: none;
  padding-inline: max(1.5rem, calc((100% - var(--max)) / 2 + 1.5rem));
}

.price-table {
  width: min(480px, 100%);
  border-collapse: collapse;
  font-size: 1.05rem;
}

.price-table th,
.price-table td {
  text-align: left;
  padding: 0.9rem 0;
  border-bottom: 1px solid var(--line);
}

.price-table th {
  color: var(--ink-soft);
  font-weight: 600;
}

.price-table td:last-child,
.price-table th:last-child {
  text-align: right;
  font-variant-numeric: tabular-nums;
  font-weight: 700;
}

.tier-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
}

.tier {
  padding: 1.5rem 1.35rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 252, 246, 0.65);
}

.tier-accent {
  background: var(--ink);
  color: #f7f3ea;
  border-color: transparent;
}

.tier-accent .tier-price {
  color: #ff9f4a;
}

.tier h3 {
  margin: 0 0 0.5rem;
  font-family: var(--font-display);
}

.tier-price {
  font-family: var(--font-display);
  font-size: 1.75rem;
  font-weight: 800;
  margin: 0 0 0.75rem;
  letter-spacing: -0.02em;
}

.tier p:last-child {
  margin: 0;
  color: inherit;
  opacity: 0.85;
}

.register-form {
  max-width: 560px;
}

.register-form label {
  display: block;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.form-row {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.form-row input {
  flex: 1 1 240px;
  border: 1.5px solid var(--line);
  border-radius: 999px;
  padding: 0.85rem 1.2rem;
  font: inherit;
  background: #fffcf6;
  color: var(--ink);
}

.form-row input:focus {
  outline: 2px solid var(--teal);
  outline-offset: 2px;
}

.form-status {
  min-height: 1.5rem;
  margin: 0.85rem 0 0;
  color: var(--ink-soft);
  font-size: 0.95rem;
}

.form-status.error {
  color: #b42318;
}

.form-status.ok {
  color: var(--teal);
}

.key-box {
  margin-top: 1rem;
  padding: 1rem 1.15rem;
  background: var(--ink);
  color: #e8ffe8;
  border-radius: var(--radius);
  font-family: ui-monospace, Consolas, monospace;
  font-size: 0.85rem;
  white-space: pre-wrap;
  word-break: break-all;
}

.how-to code,
.start code {
  font-family: ui-monospace, Consolas, monospace;
  font-size: 0.9em;
  background: rgba(16, 35, 28, 0.06);
  padding: 0.1em 0.35em;
  border-radius: 4px;
}

.howto-steps {
  list-style: none;
  margin: 0 0 2.5rem;
  padding: 0;
  display: grid;
  gap: 1.25rem;
  counter-reset: step;
}

.howto-steps li {
  display: grid;
  gap: 0.35rem;
  padding: 1.25rem 0 1.25rem 3.5rem;
  border-bottom: 1px solid var(--line);
  position: relative;
  counter-increment: step;
}

.howto-steps li::before {
  content: counter(step);
  position: absolute;
  left: 0;
  top: 1.15rem;
  width: 2.4rem;
  height: 2.4rem;
  border-radius: 50%;
  background: var(--teal);
  color: #f7f3ea;
  font-family: var(--font-display);
  font-weight: 800;
  display: grid;
  place-items: center;
}

.howto-steps strong {
  font-family: var(--font-display);
  font-size: 1.15rem;
}

.howto-steps span {
  color: var(--ink-soft);
}

.howto-examples {
  display: grid;
  gap: 1rem;
}

.howto-examples h3 {
  margin: 0.5rem 0 0;
  font-family: var(--font-display);
  font-size: 1.05rem;
}

.howto-examples .code-block {
  margin: 0;
  padding: 1rem 1.15rem;
  background: rgba(255, 252, 246, 0.9);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.howto-note {
  margin: 0;
  color: var(--ink-soft);
  max-width: 58ch;
}

.howto-note a {
  color: var(--teal);
  font-weight: 600;
}

.key-result {
  margin-top: 1.5rem;
  max-width: 640px;
  padding: 1.25rem 1.35rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 252, 246, 0.85);
}

.key-result-title {
  margin: 0 0 0.75rem;
  font-family: var(--font-display);
  font-weight: 700;
}

.key-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  align-items: center;
  margin-bottom: 1rem;
}

.key-row code {
  flex: 1 1 240px;
  word-break: break-all;
  background: var(--ink);
  color: #e8ffe8;
  padding: 0.75rem 1rem;
  border-radius: 10px;
  font-size: 0.85rem;
}

.key-result .code-block {
  margin: 0.5rem 0 1rem;
  padding: 1rem 1.15rem;
  background: rgba(16, 35, 28, 0.04);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.footer {
  max-width: var(--max);
  margin: 0 auto;
  padding: 2.5rem 1.5rem 3rem;
  border-top: 1px solid var(--line);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 1rem;
  color: var(--ink-soft);
  font-size: 0.95rem;
}

.footer a {
  color: var(--ink);
}

@keyframes rise {
  from {
    opacity: 0;
    transform: translateY(18px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

@keyframes fade-in {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

@media (max-width: 900px) {
  .nav { display: none; }
  .hero {
    grid-template-columns: 1fr;
    min-height: auto;
    padding-top: 1.5rem;
  }
  .hero h1 { max-width: none; }
  .hero-visual { min-height: 340px; }
  .orbit { min-height: 340px; }
  .tier-grid { grid-template-columns: 1fr; }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
  }
}