html, body {
  margin: 0;
  padding: 0;
  background: #0d0e10;
}

* { box-sizing: border-box; }

.page {
  --bg: #0d0e10;
  --panel: #131518;
  --line: #23262b;
  --line-soft: #1b1e22;
  --text: #eceded;
  --muted: #c2c6cc;
  --dim: #8a9098;
  --accent: #5fd6a8;
  --accent-strong: #8ce6c4;
  --accent-ink: #08130e;
  --accent-quiet: #101715;
  --accent-edge: #2f4f42;
  --code-bg: #1a1d21;
  --danger: #e08a6a;
  --sans: "IBM Plex Sans", Helvetica, Arial, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, monospace;
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.65;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

#latch-light:checked ~ .page {
  --bg: #fbfaf8;
  --panel: #ffffff;
  --line: #e2ded6;
  --line-soft: #ece8e1;
  --text: #17191c;
  --muted: #55595f;
  --dim: #6d7278;
  --accent: #0d7f5b;
  --accent-strong: #0a6448;
  --accent-ink: #ffffff;
  --accent-quiet: #f1f7f4;
  --accent-edge: #bfd9cf;
  --code-bg: #f2efe9;
  --danger: #b33f22;
}

.page .pt { display: none; }
#latch-pt:checked ~ .page .pt { display: revert; }
#latch-pt:checked ~ .page .en { display: none; }

.switch {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.seg {
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 36px;
  min-height: 32px;
  font-family: var(--mono);
  font-size: 12px;
  padding: 6px 12px;
  border-radius: 5px;
  color: var(--dim);
  user-select: none;
  position: relative;
  z-index: 2;
}

.seg:hover { color: var(--text); }

#latch-en:checked ~ .page .seg-en,
#latch-pt:checked ~ .page .seg-pt {
  background: var(--code-bg);
  color: var(--text);
}

#latch-light:checked ~ .page .seg-light {
  background: var(--code-bg);
  color: var(--text);
}

.page .seg-dark {
  background: var(--code-bg);
  color: var(--text);
}

#latch-light:checked ~ .page .seg-dark {
  background: transparent;
  color: var(--dim);
}

.page .result { opacity: .35; transition: opacity .3s ease; }
.page .tryform:has(.f-url:not(:placeholder-shown)) .result,
.page .tryform.is-ok .result { opacity: 1; }

.page a { color: var(--accent); text-decoration: none; }
.page a:hover { color: var(--accent-strong); }
.page a.header-cta,
.page a.plan-cta,
.page a.header-cta:hover,
.page a.plan-cta:hover {
  color: var(--accent-ink);
}
.page ::selection { background: var(--accent); color: var(--accent-ink); }
.page input::placeholder { color: var(--dim); opacity: .8; }

.page details summary::-webkit-details-marker { display: none; }
.page details summary { list-style: none; cursor: pointer; }
.page details[open] .chev { transform: rotate(90deg); }

.chev {
  display: inline-block;
  transition: transform .2s ease;
}

@keyframes latchDrift {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: none; }
}

.rise { animation: none; }

@media (prefers-reduced-motion: reduce) {
  .page *, .page *::before, .page *::after {
    animation: none !important;
    transition: none !important;
  }
  .page .result { opacity: 1 !important; }
}

.skip {
  position: absolute;
  left: 12px;
  top: -48px;
  z-index: 40;
  padding: 8px 12px;
  background: var(--accent);
  color: var(--accent-ink);
  font-size: 13px;
  font-weight: 500;
  text-decoration: none;
  border-radius: 6px;
}

.skip:focus { top: 12px; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: color-mix(in srgb, var(--bg) 90%, transparent);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line-soft);
}

.header-inner {
  max-width: 1040px;
  margin: 0 auto;
  padding: 14px 32px;
  display: flex;
  align-items: center;
  gap: 28px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
}

.brand:hover { color: var(--text); }

.brand-name {
  font-weight: 600;
  font-size: 16px;
  letter-spacing: -.01em;
}

.mark {
  display: block;
  width: 22px;
  height: 22px;
  color: var(--accent);
  flex: 0 0 auto;
}

.site-nav {
  display: flex;
  gap: 22px;
  font-size: 14px;
}

.site-nav a { color: var(--muted); }
.site-nav a:hover { color: var(--text); }

.header-spacer { flex: 1; }

.seg-group {
  display: flex;
  gap: 2px;
  border: 1px solid var(--line);
  border-radius: 7px;
  padding: 2px;
}

.header-cta {
  font-size: 14px;
  font-weight: 500;
  color: var(--accent-ink);
  background: var(--accent);
  padding: 8px 15px;
  border-radius: 6px;
}

.header-cta:hover { color: var(--accent-ink); background: var(--accent-strong); }

.hero {
  max-width: 1040px;
  margin: 0 auto;
  padding: 104px 32px 88px;
}

.h1 {
  margin: 0;
  max-width: 21ch;
  font-size: 58px;
  line-height: 1.05;
  letter-spacing: -.032em;
  font-weight: 500;
  text-wrap: balance;
}

.hero-lead {
  margin: 30px 0 0;
  max-width: 58ch;
  font-size: 20px;
  color: var(--text);
  opacity: .88;
}

.hero-close {
  margin: 18px 0 0;
  max-width: 58ch;
  font-size: 20px;
  color: var(--text);
}

.split {
  margin-top: 60px;
  display: grid;
  grid-template-columns: minmax(0,1fr) minmax(0,1fr);
  gap: 52px;
  align-items: start;
}

.tryform {
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--panel);
  padding: 26px;
}

.form-title {
  font-size: 15px;
  font-weight: 600;
}

.form-sub {
  font-size: 14px;
  color: var(--dim);
  margin: 4px 0 22px;
}

.field-label {
  display: block;
  font-family: var(--mono);
  font-size: 12px;
  color: var(--muted);
  margin-bottom: 8px;
}

.field-label.key { margin: 18px 0 8px; }

.tryform input {
  width: 100%;
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 6px;
  color: var(--text);
  font-family: var(--mono);
  font-size: 13px;
  padding: 11px 12px;
  outline: none;
}

.tryform input:focus { border-color: var(--accent); }

.tryform input[aria-invalid="true"] { border-color: var(--danger); }

.form-submit {
  margin-top: 22px;
  width: 100%;
  background: var(--accent);
  color: var(--accent-ink);
  border: none;
  border-radius: 6px;
  font-family: var(--sans);
  font-weight: 500;
  font-size: 15px;
  padding: 12px;
  cursor: pointer;
}

.form-submit:hover { background: var(--accent-strong); }

.form-err {
  margin: 14px 0 0;
  font-size: 13px;
  color: var(--danger);
}

.form-err[hidden] { display: none; }

.result {
  margin-top: 22px;
  border-top: 1px solid var(--line-soft);
  padding-top: 18px;
}

.result-kicker {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--dim);
  margin-bottom: 9px;
}

.result-url {
  display: block;
  font-family: var(--mono);
  font-size: 13px;
  color: var(--accent);
  overflow-wrap: anywhere;
}

.form-note {
  margin: 18px 0 0;
  font-size: 13px;
  line-height: 1.6;
  color: var(--dim);
}

.sits { padding-top: 4px; }

.kicker {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--dim);
  margin-bottom: 22px;
}

.rail { display: flex; flex-direction: column; }

.rail-row {
  display: grid;
  grid-template-columns: 20px minmax(0,1fr);
  gap: 16px;
}

.rail-mark {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  display: block;
  margin-top: 7px;
}

.dot-hollow { border: 1.5px solid var(--dim); }
.dot-live { background: var(--accent); }

.rail-line {
  width: 1px;
  flex: 1;
  background: var(--line);
  display: block;
}

.rail-copy { padding-bottom: 26px; }
.rail-row:last-child .rail-copy { padding-bottom: 0; }

.rail-title { font-size: 16px; font-weight: 500; }
.rail-title.live { color: var(--accent); }

.rail-sub {
  font-size: 14px;
  color: var(--dim);
  margin-top: 4px;
}

.sits-note {
  margin: 26px 0 0;
  font-size: 15px;
  color: var(--dim);
  max-width: 36ch;
}

.term-stack { margin-top: 32px; }

.term-block + .term-block { margin-top: 16px; }

.term-caption {
  margin: 0 0 8px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--dim);
}

.term {
  background: #0d0e10;
  border: 1px solid #23262b;
  border-radius: 8px;
  overflow: hidden;
}

.term-chrome {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 12px;
  border-bottom: 1px solid #1b1e22;
  background: #131518;
}

.term-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #2a2e34;
}

.term-dot:nth-child(1) { background: #3d3333; }
.term-dot:nth-child(2) { background: #3a382c; }
.term-dot:nth-child(3) { background: #2c3a32; }

.term pre {
  margin: 0;
  padding: 12px 14px 14px;
  overflow-x: auto;
  font-family: var(--mono);
  font-size: 12px;
  line-height: 1.55;
  color: #8a9098;
}

.term-hl { color: #5fd6a8; }

.term-foot {
  margin: 12px 0 0;
  font-size: 13px;
  line-height: 1.55;
  color: var(--dim);
  max-width: 42ch;
}

.band { border-top: 1px solid var(--line-soft); }

.band-inner {
  max-width: 1040px;
  margin: 0 auto;
  padding: 88px 32px;
}

.section-kicker {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--dim);
  margin-bottom: 20px;
}

h2 {
  margin: 0;
  font-size: 34px;
  line-height: 1.16;
  letter-spacing: -.025em;
  font-weight: 500;
}

.h2-narrow { max-width: 28ch; }

.break-grid {
  margin-top: 48px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
}

.break-head {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
}

.break-pip {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  display: block;
}

.break-pip.on { background: var(--accent); }
.break-pip.off { background: var(--dim); }

.break-head h3 {
  margin: 0;
  font-size: 16px;
  font-weight: 600;
}

.break-grid p {
  margin: 0;
  font-size: 16px;
  color: var(--muted);
}

.steps-row {
  margin-top: 48px;
  display: grid;
  grid-template-columns: repeat(3, minmax(0,1fr));
  gap: 24px;
}

.step {
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 26px;
}

.step-id {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--accent);
  margin-bottom: 16px;
}

.step h3 {
  margin: 0 0 10px;
  font-size: 19px;
  font-weight: 500;
}

.step p {
  margin: 0;
  font-size: 16px;
  color: var(--muted);
}

.protocol {
  margin-top: 36px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--panel);
}

.proto-chev { color: var(--accent); font-family: var(--mono); }

.protocol > summary {
  padding: 18px 24px;
  font-size: 15px;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 12px;
}

.protocol-body { padding: 0 24px 24px; }

.proto-row {
  display: grid;
  grid-template-columns: 132px minmax(0,1fr);
  gap: 28px;
  align-items: baseline;
  padding: 16px 0;
  border-top: 1px solid var(--line-soft);
}

.proto-key {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--accent);
}

.proto-row p {
  margin: 0;
  font-size: 15px;
  color: var(--muted);
}

.inline-code {
  font-family: var(--mono);
  font-size: 13px;
  color: var(--text);
  background: var(--code-bg);
  padding: 2px 6px;
  border-radius: 4px;
}

.plans {
  margin-top: 48px;
  display: grid;
  grid-template-columns: repeat(3, minmax(0,1fr));
  gap: 20px;
}

.plan {
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 26px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.plan-solo {
  border-color: var(--accent-edge);
  background: var(--accent-quiet);
  position: relative;
}

.plan-badge {
  position: absolute;
  top: 20px;
  right: 20px;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--accent);
}

.plan-name {
  font-size: 15px;
  font-weight: 600;
}

.plan-price {
  font-size: 34px;
  letter-spacing: -.03em;
  font-weight: 500;
  line-height: 1;
}

.plan-unit {
  font-size: 15px;
  color: var(--dim);
  font-weight: 400;
}

.plan-tag {
  margin: 0;
  font-size: 15px;
  color: var(--muted);
}

.plan-feats {
  margin: 4px 0 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 9px;
  font-size: 14px;
  color: var(--muted);
}

.plan-cta {
  margin-top: 4px;
  text-align: center;
  background: var(--accent);
  color: var(--accent-ink);
  font-size: 15px;
  font-weight: 500;
  padding: 11px;
  border-radius: 6px;
}

.plan-cta:hover { color: var(--accent-ink); background: var(--accent-strong); }

.later-line {
  margin: 26px 0 0;
  font-size: 14px;
  color: var(--dim);
}

.faq-h2 { margin: 0 0 40px; }

.faq-list { max-width: 760px; }

.faq-item { border-top: 1px solid var(--line-soft); }
.faq-item.last { border-bottom: 1px solid var(--line-soft); }

.faq-item summary {
  padding: 20px 0;
  font-size: 17px;
  font-weight: 450;
  display: flex;
  align-items: center;
  gap: 14px;
}

.faq-chev {
  color: var(--accent);
  font-family: var(--mono);
  font-size: 14px;
}

.faq-item p {
  margin: 0;
  padding: 0 40px 22px 28px;
  font-size: 16px;
  color: var(--muted);
}

.site-footer { border-top: 1px solid var(--line-soft); }

.footer-inner {
  max-width: 1040px;
  margin: 0 auto;
  padding: 36px 32px;
  display: flex;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
}

.footer-inner .brand-name { font-size: 15px; }

.footer-tag {
  font-size: 14px;
  color: var(--dim);
}

@media (max-width: 860px) {
  .split,
  .break-grid,
  .steps-row,
  .plans {
    grid-template-columns: minmax(0,1fr) !important;
  }

  .steps-row { gap: 10px !important; }
  .h1 { font-size: 40px !important; }

  .header-inner {
    flex-wrap: wrap;
    gap: 12px 20px;
  }

  .proto-row {
    grid-template-columns: minmax(0,1fr);
    gap: 8px;
  }
}