:root {
  --paper: #ffffff; --wash: #f3f6fb; --ink: #0b1b33; --soft: #4a5a73; --rule: #dbe3ef;
  --blue: #1d4ed8; --blue-dark: #1e3a8a; --red: #c62828; --green: #15803d; --code: #0f172a; --code-ink: #e2e8f0;
  --sans: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --mono: ui-monospace, "SF Mono", "Cascadia Mono", Menlo, Consolas, monospace;
}
@media (prefers-color-scheme: dark) {
  :root { --paper: #0a1224; --wash: #101a30; --ink: #e8eefb; --soft: #9fb0cc; --rule: #1f2d4a; --blue: #7aa7ff; --blue-dark: #9db9ff; --red: #ff8a80; --green: #4ade80; }
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; font-family: var(--sans); color: var(--ink); background: var(--paper); line-height: 1.6; font-size: 17px; }
a { color: var(--blue); }
.wrap { max-width: 1080px; margin: 0 auto; padding: 0 20px; }
.skip { position: absolute; left: -999px; } .skip:focus { left: 12px; top: 12px; background: var(--paper); padding: 8px 12px; z-index: 9; }
:focus-visible { outline: 3px solid var(--blue); outline-offset: 2px; }

header.top { border-bottom: 1px solid var(--rule); position: sticky; top: 0; background: var(--paper); z-index: 5; }
header.top .wrap { display: flex; align-items: center; gap: 22px; height: 64px; }
.brand { display: flex; align-items: center; gap: 8px; font-weight: 800; font-size: 20px; color: var(--ink); text-decoration: none; letter-spacing: -.02em; }
.brand b { color: var(--blue); font-weight: 800; }
nav.main { display: flex; gap: 20px; margin-left: auto; align-items: center; }
nav.main a { color: var(--soft); text-decoration: none; font-size: 15px; }
nav.main a:hover { color: var(--ink); }
.btn { display: inline-block; padding: 11px 20px; border-radius: 8px; font-weight: 650; text-decoration: none; border: 1.5px solid var(--ink); color: var(--ink); background: transparent; font-size: 16px; cursor: pointer; }
.btn.primary { background: var(--blue); border-color: var(--blue); color: #fff; }
.btn.primary:hover { background: var(--blue-dark); border-color: var(--blue-dark); }
@media (prefers-color-scheme: dark) { .btn.primary { color: #0a1224; } }
.btn.small { padding: 7px 14px; font-size: 14.5px; }

.hero { padding: 72px 0 56px; }
.hero .wrap { display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr); gap: 48px; align-items: center; }
.hero h1 { font-size: clamp(34px, 5vw, 54px); line-height: 1.05; letter-spacing: -.03em; margin: 0 0 20px; font-weight: 800; }
.hero p.lead { font-size: 19px; color: var(--soft); max-width: 34em; margin: 0 0 28px; }
.cta { display: flex; gap: 12px; flex-wrap: wrap; }
.fine { color: var(--soft); font-size: 14px; margin-top: 14px; }

.sample { border: 1px solid var(--rule); border-radius: 12px; overflow: hidden; background: var(--paper); box-shadow: 0 1px 0 var(--rule); }
.sample-head { display: flex; gap: 10px; align-items: center; padding: 12px 16px; border-bottom: 1px solid var(--rule); background: var(--wash); font-family: var(--mono); font-size: 14px; }
.method { font-weight: 700; color: var(--green); }
.chips { display: flex; gap: 8px; margin-left: auto; }
.chip { padding: 2px 10px; border-radius: 999px; font: 600 12.5px var(--sans); background: rgba(198,40,40,.12); color: var(--red); }
.chip.ok { background: rgba(21,128,61,.12); color: var(--green); }
.sample-body { padding: 16px; }
.sample-body .label { font-size: 12.5px; color: var(--soft); margin: 0 0 6px; }
.params { display: grid; grid-template-columns: 110px 1fr; gap: 6px 14px; margin-bottom: 14px; font-family: var(--mono); font-size: 14px; }
.pn { color: var(--blue); font-weight: 700; } .req { color: var(--red); }
.val { border: 1px solid var(--rule); border-radius: 6px; padding: 3px 8px; }
pre.code { margin: 0; background: var(--code); color: var(--code-ink); padding: 14px 16px; border-radius: 8px; border-left: 3px solid var(--blue); font: 14px/1.6 var(--mono); overflow: auto; }
pre.code.err { border-left-color: var(--red); }
.k { color: #7aa7ff; font-weight: 600; } .s { color: #ff8a80; } .n { color: #5eead4; }
.bars { display: flex; gap: 3px; align-items: flex-end; height: 34px; margin: 10px 0 0; }
.bars i { flex: 1; background: var(--blue); border-radius: 2px 2px 0 0; opacity: .75; } .bars i.hot { background: var(--red); opacity: 1; }
.samplenote { font-size: 13px; color: var(--soft); padding: 0 16px 14px; }

section { padding: 64px 0; border-top: 1px solid var(--rule); }
section h2 { font-size: clamp(26px, 3.4vw, 36px); letter-spacing: -.02em; line-height: 1.15; margin: 0 0 14px; }
section .sub { color: var(--soft); max-width: 40em; margin: 0 0 34px; }
.grid3 { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 28px 32px; }
.grid2 { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 28px 40px; }
.item h3 { margin: 0 0 6px; font-size: 18px; }
.item p { margin: 0; color: var(--soft); font-size: 16px; }
.item h3 .tag { font: 600 12px var(--mono); color: var(--blue); margin-right: 6px; }
ul.tick { list-style: none; padding: 0; margin: 0; } ul.tick li { padding: 6px 0 6px 26px; position: relative; } ul.tick li::before { content: ""; position: absolute; left: 2px; top: 14px; width: 12px; height: 6px; border-left: 2.5px solid var(--green); border-bottom: 2.5px solid var(--green); transform: rotate(-45deg); }
ul.tick li.later { color: var(--soft); } ul.tick li.later::before { border-color: var(--soft); border-width: 0 0 2.5px 0; transform: none; width: 10px; height: 0; top: 18px; }
.band { background: var(--wash); }
.steps { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 24px; }
.steps pre { font-size: 13px; }

.billing { display: inline-flex; border: 1.5px solid var(--ink); border-radius: 999px; padding: 3px; margin-bottom: 28px; }
.billing button { border: 0; background: transparent; color: var(--ink); padding: 8px 20px; border-radius: 999px; font: 650 15px var(--sans); cursor: pointer; }
.billing button[aria-pressed="true"] { background: var(--ink); color: var(--paper); }
.plans { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 24px; max-width: 1080px; }
.plan { border: 1.5px solid var(--rule); border-radius: 14px; padding: 28px; background: var(--paper); }
.plan.featured { border-color: var(--blue); box-shadow: 0 0 0 1px var(--blue); }
.plan h3 { margin: 0; font-size: 20px; } .plan .for { color: var(--soft); font-size: 15px; margin: 4px 0 18px; }
.price { font-size: 46px; font-weight: 800; letter-spacing: -.03em; line-height: 1; }
.price small { font-size: 16px; font-weight: 500; color: var(--soft); letter-spacing: 0; }
.priceNote { color: var(--soft); font-size: 14px; min-height: 22px; margin: 6px 0 20px; }
.plan .btn { width: 100%; text-align: center; margin-top: 18px; }

.contact dl { display: grid; grid-template-columns: 110px 1fr; gap: 8px 16px; margin: 0; }
.contact dt { color: var(--soft); } .contact dd { margin: 0; }
details.q { border-bottom: 1px solid var(--rule); padding: 14px 0; } details.q summary { cursor: pointer; font-weight: 650; } details.q p { color: var(--soft); margin: 8px 0 0; }
footer { border-top: 1px solid var(--rule); padding: 32px 0 48px; color: var(--soft); font-size: 14.5px; }
footer .wrap { display: flex; flex-wrap: wrap; gap: 12px 28px; align-items: center; } footer a { color: var(--soft); } footer .grow { margin-left: auto; }

/* legal page */
.legal { padding: 48px 0 72px; max-width: 760px; }
.legal h1 { font-size: 34px; letter-spacing: -.02em; margin: 0 0 6px; }
.legal .tabs { display: flex; gap: 6px; flex-wrap: wrap; margin: 18px 0 28px; }
.legal .tabs a { padding: 7px 16px; border-radius: 999px; border: 1.5px solid var(--rule); color: var(--soft); text-decoration: none; font-weight: 600; font-size: 15px; }
.legal .tabs a[aria-current="page"] { background: var(--ink); color: var(--paper); border-color: var(--ink); }
.legal h2 { font-size: 20px; margin: 28px 0 6px; } .legal p { margin: 0 0 12px; } .legal ul { margin: 0 0 12px; padding-left: 22px; }
.legal .updated { color: var(--soft); font-size: 14px; }

@media (max-width: 860px) {
  .hero .wrap, .grid3, .grid2, .steps, .plans { grid-template-columns: 1fr; }
  nav.main a:not(.btn) { display: none; }
  .hero { padding-top: 40px; } section { padding: 48px 0; }
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

/* Request-a-licence form */
.req-form { display: grid; gap: 14px; max-width: 520px; margin-top: 22px; }
.req-form label { display: grid; gap: 6px; font-weight: 600; }
.req-form input, .req-form select, .req-form textarea { font: inherit; padding: 10px 12px; border: 1px solid var(--rule); border-radius: 8px; background: var(--paper); color: var(--ink); }
.req-msg { min-height: 1.2em; }
.req-msg.bad { color: var(--red); }
.req-msg.ok { color: var(--green); font-weight: 600; margin-top: 22px; }
.req-form [hidden] { display: none; }

/* Java kit (also used inside the app's Setup tab) */
.jk-steps { margin: 0 0 14px; padding-left: 20px; }
.jk-label { display: grid; gap: 6px; font-weight: 600; max-width: 560px; margin-bottom: 6px; }
.jk-label input { font: inherit; font-family: ui-monospace, Menlo, Consolas, monospace; padding: 10px 12px; border: 1px solid #c3ccd8; border-radius: 8px; background: transparent; color: inherit; }
.jk-err { color: #c62828; min-height: 1.2em; font-size: 14px; }
.jk-actions { display: flex; gap: 8px; flex-wrap: wrap; margin: 8px 0; }
.jk-card { border: 1px solid #c3ccd8; border-radius: 10px; padding: 8px 14px; margin: 8px 0; }
.jk-card summary { cursor: pointer; font-weight: 600; font-family: ui-monospace, Menlo, Consolas, monospace; }
.jk-code { background: #0f172a; color: #e2e8f0; border-radius: 8px; padding: 12px 14px; overflow: auto; font-size: 13px; line-height: 1.5; margin: 6px 0; }
.jk-file { max-height: 360px; }
.jk-head { display: flex; justify-content: space-between; align-items: center; gap: 10px; flex-wrap: wrap; font-family: ui-monospace, Menlo, Consolas, monospace; }
.jk-card summary { font-weight: 400; font-family: inherit; margin-top: 6px; }
.req-form { max-width: 720px; }
.req-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; }
.req-set { border: 1px solid var(--rule); border-radius: 12px; padding: 14px 16px 16px; display: grid; gap: 14px; }
.req-set legend { font-weight: 700; padding: 0 8px; }
.req-set[hidden] { display: none; }
@media (max-width: 640px) { .req-grid { grid-template-columns: 1fr; } }

/* Thank-you popup after a licence request */
.req-popup { position: fixed; inset: 0; background: rgba(10, 12, 30, .55); display: grid; place-items: center; z-index: 50; padding: 16px; }
.req-popup-box { background: var(--paper); color: var(--ink); border: 1px solid var(--rule); max-width: 460px; width: 100%; border-radius: 20px; padding: 28px; display: grid; gap: 12px; box-shadow: 0 20px 60px rgba(0, 0, 0, .35); }
.req-popup-box h2 { margin: 0; font-size: 26px; }
.req-popup-box p { margin: 0; }
.req-popup-box small { color: var(--soft); }
.req-pay { border: 1px solid #dbe3ef; border-radius: 12px; padding: 14px 16px; margin: 12px 0; background: #f8fafc; }
.req-pay p { margin: 0 0 8px; } .req-pay #payAmount { font-size: 22px; }
#payNow { margin-left: 8px; }
#paidDone p { margin: 6px 0 12px; }
#f[hidden] { display: none !important; }

.req-auto { display: flex; gap: 8px; align-items: flex-start; font-size: 13px; margin: 6px 0 10px; }
.req-auto[hidden] { display: none; }
.req-auto input { margin-top: 3px; }

/* Purchase page: the payment section */
.req-form .pay-set { gap: 14px; }
.ps-intro { margin: 0; font-size: 14.5px; color: var(--soft); line-height: 1.55; font-weight: 450; max-width: 60ch; }
.pay-choice { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
.pay-choice[hidden] { display: none; }
.req-form .pay-opt { position: relative; display: grid; grid-template-columns: 22px 1fr; gap: 12px; align-items: start; padding: 14px 16px; border: 1.5px solid var(--rule); border-radius: 14px; background: #fff; cursor: pointer; font-weight: 450; transition: border-color .15s, box-shadow .15s; }
.pay-opt:hover { border-color: #c9c3ee; }
.pay-opt input { position: absolute; opacity: 0; inset: 0; width: 100%; height: 100%; margin: 0; cursor: pointer; }
.po-dot { width: 20px; height: 20px; border-radius: 50%; border: 1.5px solid #b9b3e0; margin-top: 1px; display: grid; place-items: center; background: #fff; }
.po-dot::after { content: ""; width: 10px; height: 10px; border-radius: 50%; background: var(--blue); transform: scale(0); transition: transform .15s; }
.pay-opt:has(input:checked) { border-color: var(--blue); box-shadow: 0 0 0 3px rgba(79, 70, 229, .12); }
.pay-opt:has(input:checked) .po-dot { border-color: var(--blue); }
.pay-opt:has(input:checked) .po-dot::after { transform: scale(1); }
.pay-opt:has(input:focus-visible) { outline: 3px solid rgba(79, 70, 229, .35); outline-offset: 2px; }
.po-body { display: grid; gap: 3px; min-width: 0; }
.po-body strong { font-size: 15.5px; font-weight: 650; }
.po-price { font-size: 20px; font-weight: 700; letter-spacing: -.01em; font-variant-numeric: tabular-nums; }
.po-price:empty { display: none; }
.po-sub { font-size: 13px; color: var(--soft); line-height: 1.45; }
.pay-btn { width: 100%; text-align: center; }
#payNow { margin-left: 0; }
.pc-foot { margin: 0; display: flex; gap: 6px; align-items: center; justify-content: center; font-size: 12.5px; color: var(--soft); }
.req-pay { display: grid; gap: 0; border: 0; padding: 0; margin: 0; background: none; }
.pp-label { margin: 0; font-size: 14px; color: var(--soft); font-weight: 600; }
.req-pay #payAmount { display: block; font-size: 40px; line-height: 1.15; font-weight: 750; letter-spacing: -.03em; font-variant-numeric: tabular-nums; margin: 2px 0 0; }
.pp-then { margin: 4px 0 0; font-size: 14px; color: var(--soft); }
.pp-rows { margin-top: 16px; border-top: 1px solid var(--rule); }
.pp-row { display: flex; justify-content: space-between; gap: 16px; padding: 11px 0; border-bottom: 1px solid var(--rule); font-size: 14.5px; }
.pp-row span:first-child { color: var(--soft); }
.pp-row span:last-child { font-weight: 600; text-align: right; }
.req-pay .pp-note { margin: 12px 0 0; font-size: 13px; color: var(--soft); line-height: 1.5; }
.req-pay .pay-btn { margin-top: 16px; }
.pp-back { justify-self: center; margin-top: 6px; background: none; border: 0; color: var(--soft); font: inherit; font-size: 14px; text-decoration: underline; text-underline-offset: 3px; cursor: pointer; padding: 8px; }
@media (max-width: 640px) { .pay-choice { grid-template-columns: 1fr; } .req-pay #payAmount { font-size: 34px; } }