:root {
  --paper: #f7f1e8;
  --paper-2: #efe5d7;
  --ink: #151310;
  --ink-2: #2a251f;
  --muted: #756a5c;
  --line: #d9cdbc;
  --brass: #a9824b;
  --brass-2: #c5a06a;
  --white: #fffaf2;
  --bad: #9f3328;
  --ok: #4f6b45;
  --shadow: 0 18px 42px rgba(21, 19, 16, .08);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Helvetica Neue", Arial, sans-serif;
  font-size: 14px;
  letter-spacing: 0;
  font-variant-numeric: tabular-nums;
}
a { color: inherit; text-decoration: none; }
button, input, select, textarea { font: inherit; }
button { cursor: pointer; }
button[disabled], .btn[aria-busy="true"] { cursor: wait; opacity: .62; }
.hidden { display: none !important; }
.serif { font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text", "Helvetica Neue", Arial, sans-serif; }
.mono { font-family: "SF Mono", SFMono-Regular, ui-monospace, Menlo, Monaco, Consolas, monospace; }

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 700;
  letter-spacing: 0;
}
.brand img { width: 30px; height: 30px; }
.brand span { font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text", "Helvetica Neue", Arial, sans-serif; font-size: 20px; line-height: 1; font-weight: 700; }

.site-shell {
  min-height: 100vh;
  background:
    linear-gradient(90deg, rgba(21,19,16,.035) 1px, transparent 1px),
    linear-gradient(180deg, var(--paper) 0%, #fff8ef 100%);
  background-size: 72px 72px, auto;
}
.site-nav {
  position: sticky;
  top: 0;
  z-index: 20;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  padding: 14px clamp(20px, 5vw, 76px);
  border-bottom: 1px solid var(--line);
  background: rgba(247, 241, 232, .9);
  backdrop-filter: blur(16px);
}
.site-nav nav { display: flex; gap: 22px; justify-content: center; color: var(--muted); font-size: 14px; }
.site-nav .nav-actions { display: flex; justify-content: flex-end; gap: 10px; }

.button, .btn {
  min-height: 36px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 0 13px;
  border: 1px solid var(--line);
  border-radius: 4px;
  background: transparent;
  color: var(--ink);
}
.button.primary, .btn.primary {
  background: var(--ink);
  border-color: var(--ink);
  color: var(--paper);
}
.button.brass, .btn.brass {
  background: var(--brass);
  border-color: var(--brass);
  color: var(--ink);
}
.btn.danger { color: var(--bad); border-color: rgba(159, 51, 40, .35); }

.hero {
  min-height: auto;
  display: grid;
  grid-template-columns: minmax(0, 1.06fr) minmax(340px, .94fr);
  align-items: center;
  gap: clamp(26px, 5vw, 72px);
  padding: clamp(44px, 6vw, 70px) clamp(20px, 5vw, 76px) clamp(34px, 5vw, 56px);
}
.compact-hero { min-height: min(700px, calc(100vh - 59px)); }
.hero-kicker {
  margin-bottom: 16px;
  color: var(--brass);
  font-family: "SF Mono", SFMono-Regular, ui-monospace, Menlo, Monaco, Consolas, monospace;
  font-size: 12px;
  text-transform: uppercase;
}
.hero h1 {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text", "Helvetica Neue", Arial, sans-serif;
  font-weight: 700;
  max-width: 860px;
  font-size: clamp(42px, 6.8vw, 86px);
  line-height: .9;
}
.hero p {
  max-width: 610px;
  margin: 18px 0 0;
  color: var(--muted);
  font-size: clamp(15px, 1.5vw, 18px);
  line-height: 1.62;
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 24px; }
.ledger {
  border: 1px solid var(--ink);
  background: rgba(255, 250, 242, .78);
  box-shadow: var(--shadow);
}
.ledger-head {
  display: grid;
  grid-template-columns: 1fr auto;
  padding: 18px;
  border-bottom: 1px solid var(--ink);
}
.ledger-title { font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text", "Helvetica Neue", Arial, sans-serif; font-size: 22px; font-weight: 700; }
.ledger-code { font-family: "SF Mono", SFMono-Regular, ui-monospace, Menlo, Monaco, Consolas, monospace; color: var(--brass); font-size: 12px; }
.ledger-row {
  display: grid;
  grid-template-columns: 110px 1fr;
  gap: 18px;
  padding: 18px;
  border-bottom: 1px solid var(--line);
}
.ledger-row:last-child { border-bottom: 0; }
.ledger-row span:first-child { color: var(--muted); font-family: "SF Mono", SFMono-Regular, ui-monospace, Menlo, Monaco, Consolas, monospace; font-size: 12px; }
.ledger-row span:last-child { overflow-wrap: anywhere; }
.public-ledger { max-width: 420px; justify-self: end; }
.metric-row {
  display: grid;
  grid-template-columns: 112px 1fr;
  gap: 16px;
  align-items: center;
  padding: 18px;
  border-bottom: 1px solid var(--line);
}
.metric-row:last-child { border-bottom: 0; }
.metric-row strong {
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text", "Helvetica Neue", Arial, sans-serif;
  font-size: 34px;
  line-height: .9;
}
.metric-row span { color: var(--muted); line-height: 1.5; }
.site-section {
  padding: 56px clamp(20px, 5vw, 76px);
  border-top: 1px solid var(--line);
  scroll-margin-top: 72px;
}
.section-grid {
  display: grid;
  grid-template-columns: minmax(220px, .36fr) 1fr;
  gap: clamp(28px, 6vw, 80px);
}
.site-section h2 {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text", "Helvetica Neue", Arial, sans-serif;
  font-weight: 700;
  font-size: clamp(30px, 4vw, 52px);
  line-height: .96;
}
.site-section p { margin: 0; color: var(--muted); line-height: 1.66; }
.feature-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}
.feature {
  min-height: 172px;
  padding: 20px;
  background: var(--paper);
}
.feature .index { color: var(--brass); font-family: "SF Mono", SFMono-Regular, ui-monospace, Menlo, Monaco, Consolas, monospace; font-size: 12px; }
.feature h3 { margin: 36px 0 10px; font-size: 16px; }
.feature p { font-size: 14px; }
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  margin-top: 24px;
  border: 1px solid var(--line);
  background: var(--line);
}
.model-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1px;
  margin-top: 24px;
  border: 1px solid var(--line);
  background: var(--line);
}
.model-card {
  min-height: 172px;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  padding: 18px;
  background: var(--paper);
}
.model-card h3 {
  margin: 26px 0 8px;
  font-size: 16px;
  line-height: 1.18;
  overflow-wrap: anywhere;
}
.model-card p {
  min-height: 24px;
  font-size: 13px;
}
.model-price {
  margin-top: auto;
  padding-top: 14px;
  color: var(--ink);
  font-family: "SF Mono", SFMono-Regular, ui-monospace, Menlo, Monaco, Consolas, monospace;
  font-size: 12px;
  line-height: 1.45;
}
.model-card.skeleton { color: var(--muted); }
.price-card {
  min-height: 250px;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  padding: 22px;
  background: var(--paper);
}
.price-card.featured { background: var(--white); }
.price-card h3 {
  margin: 34px 0 12px;
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text", "Helvetica Neue", Arial, sans-serif;
  font-size: 36px;
  line-height: .9;
}
.price-card h3 span {
  margin-left: 4px;
  color: var(--muted);
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Helvetica Neue", Arial, sans-serif;
  font-size: 14px;
  font-weight: 500;
}
.price-card p { min-height: 70px; font-size: 14px; }
.price-card .button { margin-top: auto; }
.code {
  margin-top: 24px;
  overflow: auto;
  padding: 22px;
  border: 1px solid var(--ink);
  background: var(--ink);
  color: var(--paper);
  font-family: "SF Mono", SFMono-Regular, ui-monospace, Menlo, Monaco, Consolas, monospace;
  font-size: 13px;
  line-height: 1.7;
}
.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  padding: 28px clamp(20px, 5vw, 76px);
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 13px;
}

.login {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 20px;
  background: var(--ink);
}
.login-box {
  width: min(430px, 100%);
  padding: 28px;
  border: 1px solid rgba(247, 241, 232, .24);
  background: var(--paper);
}
.login-box .brand { margin-bottom: 26px; }
.login-box form { display: grid; gap: 14px; }
.auth-switch { margin: 14px 0 0; }
.auth-switch .btn { width: 100%; }

.app-shell {
  min-height: 100vh;
  display: grid;
  grid-template-columns: 248px 1fr;
  background: var(--paper);
}
.sidebar {
  position: sticky;
  top: 0;
  height: 100vh;
  padding: 18px;
  border-right: 1px solid var(--line);
  background: var(--ink);
  color: var(--paper);
}
.sidebar .brand { margin-bottom: 34px; }
.sidebar .brand img { filter: none; }
.side-note {
  margin: 0 0 18px;
  color: rgba(247, 241, 232, .54);
  font-family: "SF Mono", SFMono-Regular, ui-monospace, Menlo, Monaco, Consolas, monospace;
  font-size: 11px;
  text-transform: uppercase;
}
.side-link {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 35px;
  padding: 0 10px;
  margin-bottom: 5px;
  border: 0;
  border-left: 2px solid transparent;
  border-radius: 0;
  background: transparent;
  color: rgba(247, 241, 232, .72);
  text-align: left;
}
.side-link.active, .side-link:hover {
  border-left-color: var(--brass);
  background: rgba(247, 241, 232, .06);
  color: var(--paper);
}
.main {
  min-width: 0;
  padding: 22px clamp(18px, 4vw, 36px) 36px;
}
.topbar {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 18px;
  align-items: end;
  margin-bottom: 28px;
}
.eyebrow {
  color: var(--brass);
  font-family: "SF Mono", SFMono-Regular, ui-monospace, Menlo, Monaco, Consolas, monospace;
  font-size: 12px;
  text-transform: uppercase;
}
.topbar h1 {
  margin: 6px 0 0;
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text", "Helvetica Neue", Arial, sans-serif;
  font-size: clamp(30px, 3.5vw, 48px);
  font-weight: 600;
  line-height: .92;
}
.topbar small { color: var(--muted); }
.actions { display: flex; gap: 8px; flex-wrap: wrap; justify-content: flex-end; }
.cards {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}
.card {
  min-height: 96px;
  padding: 15px;
  background: var(--paper);
}
.card span {
  color: var(--muted);
  font-family: "SF Mono", SFMono-Regular, ui-monospace, Menlo, Monaco, Consolas, monospace;
  font-size: 11px;
  text-transform: uppercase;
}
.card strong {
  display: block;
  margin-top: 18px;
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text", "Helvetica Neue", Arial, sans-serif;
  font-size: 30px;
  line-height: .8;
}
.panel {
  margin-top: 16px;
  border: 1px solid var(--line);
  background: rgba(255, 250, 242, .46);
}
.panel-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  min-height: 48px;
  padding: 0 14px;
  border-bottom: 1px solid var(--line);
}
.panel-head h2 { margin: 0; font-size: 17px; }
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; }
th, td {
  padding: 10px 12px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: middle;
  white-space: nowrap;
}
th {
  color: var(--muted);
  font-family: "SF Mono", SFMono-Regular, ui-monospace, Menlo, Monaco, Consolas, monospace;
  font-size: 11px;
  font-weight: 500;
  text-transform: uppercase;
}
td { color: var(--ink-2); font-size: 13px; }
td.wrap { white-space: normal; overflow-wrap: anywhere; }
tr:last-child td { border-bottom: 0; }
.status-ok { color: var(--ok); font-weight: 700; }
.status-bad { color: var(--bad); font-weight: 700; }
.tag {
  display: inline-flex;
  align-items: center;
  min-height: 24px;
  padding: 0 8px;
  border: 1px solid var(--line);
  color: var(--muted);
  font-family: "SF Mono", SFMono-Regular, ui-monospace, Menlo, Monaco, Consolas, monospace;
  font-size: 11px;
}
.field { display: grid; gap: 7px; }
.field label {
  color: var(--muted);
  font-family: "SF Mono", SFMono-Regular, ui-monospace, Menlo, Monaco, Consolas, monospace;
  font-size: 11px;
  text-transform: uppercase;
}
.field input, .field select, .field textarea {
  width: 100%;
  min-height: 38px;
  padding: 0 11px;
  border: 1px solid var(--line);
  border-radius: 0;
  background: var(--white);
  color: var(--ink);
}
.field textarea { min-height: 92px; padding-top: 10px; resize: vertical; }
.field.full { grid-column: 1 / -1; }
.form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 13px;
}
.modal {
  position: fixed;
  inset: 0;
  z-index: 60;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 20px;
  background: rgba(21, 19, 16, .62);
}
.modal.open { display: flex; }
.dialog {
  width: min(760px, 100%);
  max-height: min(780px, 92vh);
  overflow: auto;
  border: 1px solid var(--ink);
  background: var(--paper);
  box-shadow: var(--shadow);
}
.dialog-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 62px;
  padding: 0 18px;
  border-bottom: 1px solid var(--line);
}
.dialog-head h2 {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text", "Helvetica Neue", Arial, sans-serif;
  font-size: 32px;
}
.dialog-body { padding: 18px; }
.copybox {
  padding: 14px;
  border: 1px solid var(--ink);
  background: var(--ink);
  color: var(--paper);
  font-family: "SF Mono", SFMono-Regular, ui-monospace, Menlo, Monaco, Consolas, monospace;
  overflow-wrap: anywhere;
  line-height: 1.6;
}
.toast {
  position: fixed;
  right: 18px;
  bottom: 18px;
  z-index: 80;
  display: none;
  max-width: min(460px, calc(100vw - 36px));
  padding: 13px 15px;
  border: 1px solid var(--ink);
  background: var(--ink);
  color: var(--paper);
  box-shadow: var(--shadow);
}
.toast.show { display: block; }
body.is-loading { cursor: wait; }
body.is-loading::after {
  content: "";
  position: fixed;
  right: 18px;
  bottom: 76px;
  z-index: 90;
  width: 28px;
  height: 28px;
  border: 2px solid rgba(169, 130, 75, .22);
  border-top-color: var(--brass);
  border-radius: 50%;
  animation: spin .7s linear infinite;
  background: var(--paper);
}
@keyframes spin { to { transform: rotate(360deg); } }

@media (max-width: 1020px) {
  .hero, .section-grid, .app-shell { grid-template-columns: 1fr; }
  .sidebar { position: relative; height: auto; }
  .feature-list, .cards, .pricing-grid, .model-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .public-ledger { justify-self: stretch; max-width: none; }
}
@media (max-width: 680px) {
  .site-nav { grid-template-columns: 1fr; gap: 14px; }
  .site-nav nav, .site-nav .nav-actions { justify-content: flex-start; overflow-x: auto; }
  .feature-list, .cards, .pricing-grid, .model-grid, .form-grid { grid-template-columns: 1fr; }
  .topbar { grid-template-columns: 1fr; }
  .actions { justify-content: flex-start; }
  .ledger-row { grid-template-columns: 1fr; gap: 6px; }
  .metric-row { grid-template-columns: 1fr; gap: 8px; }
}