:root {
  --ink: #1d2a24; --muted: #5b6b63; --bg: #fbf8f1; --paper: #fff;
  --green: #0f6b4a; --green-soft: #e3f1ea; --sun: #f2a516; --sun-soft: #fdf1d8; --line: #e4ddcc;
  --radius: 14px;
  font-family: "Atkinson Hyperlegible", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  font-size: 18px; line-height: 1.55; color: var(--ink); background: var(--bg);
}
* { box-sizing: border-box; }
body { margin: 0; }
img, iframe { max-width: 100%; }
img { height: auto; }
a { color: var(--green); }
h1, h2, h3 { line-height: 1.2; margin: 0 0 .5em; }
h1 { font-size: clamp(2rem, 6vw, 3.2rem); letter-spacing: -.02em; }
h2 { font-size: clamp(1.5rem, 4vw, 2.1rem); }
h3 { font-size: 1.1rem; }
.wrap { max-width: 1080px; margin: 0 auto; padding: 0 16px; }
section { padding: 56px 0; }
section:nth-of-type(even) { background: var(--paper); }
.lead { font-size: 1.2rem; color: var(--muted); max-width: 40em; }

/* top bar */
.top { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: 12px; padding: 12px 16px; max-width: 1080px; margin: 0 auto; }
.brand { font-weight: 700; text-decoration: none; color: var(--ink); }
.brand span { color: var(--green); }
.langs { display: flex; flex-wrap: wrap; gap: 2px; }
.langs a { white-space: nowrap; padding: 4px 9px; border-radius: 99px; text-decoration: none; font-size: .9rem; }
.langs a[aria-current] { background: var(--green); color: #fff; }

/* hero */
.hero { padding: 32px 0 56px; }
.hero .wrap { display: grid; gap: 32px; align-items: center; }
@media (min-width: 860px) { .hero .wrap { grid-template-columns: 1.1fr 1fr; } }
.hero img { border-radius: var(--radius); box-shadow: 0 10px 30px rgba(0,0,0,.12); }
.pills { display: flex; flex-wrap: wrap; gap: 8px; margin: 20px 0; padding: 0; list-style: none; }
.pills li { background: var(--green-soft); color: var(--green); padding: 6px 14px; border-radius: 99px; font-weight: 600; font-size: .95rem; }

/* buttons */
.btns { display: flex; flex-wrap: wrap; gap: 8px; }
.btn { display: inline-block; background: var(--green); color: #fff; padding: 12px 20px; border-radius: 10px; text-decoration: none; font-weight: 700; border: 2px solid var(--green); }
.btn:hover { filter: brightness(1.1); }
.btn-ghost { background: transparent; color: var(--green); }
.btn-sun { background: var(--sun); border-color: var(--sun); color: var(--ink); }

/* grids & cards */
.grid { display: grid; gap: 16px; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); margin-top: 24px; }
.card { background: var(--paper); border: 1px solid var(--line); border-radius: var(--radius); padding: 20px; }
section:nth-of-type(even) .card { background: var(--bg); }
.card-accent { border-color: var(--sun); background: var(--sun-soft) !important; }
.icon { font-size: 2.2rem; line-height: 1; display: block; margin-bottom: 10px; }
.card p { margin: 0 0 .6em; }
.big { font-size: 1.4rem; font-weight: 700; }

/* steps */
.steps { counter-reset: s; list-style: none; padding: 0; display: grid; gap: 16px; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); margin-top: 24px; }
.steps li { counter-increment: s; padding: 20px; border-inline-start: 4px solid var(--sun); background: var(--bg); border-start-end-radius: var(--radius); border-end-end-radius: var(--radius); }
.steps li::before { content: counter(s); display: block; font-size: 2rem; font-weight: 800; color: var(--sun); }

/* checker */
#checker-form fieldset { border: 1px solid var(--line); border-radius: var(--radius); padding: 16px 20px; margin: 0 0 12px; background: var(--paper); }
#checker-form legend { font-weight: 700; padding: 0 6px; }
#checker-form label { margin-inline-end: 24px; font-size: 1.1rem; cursor: pointer; }
#checker-form input { transform: scale(1.4); margin-inline-end: 8px; }
[data-result] { margin-top: 16px; }

/* picker */
#picker select { font: inherit; padding: 12px; border-radius: 10px; border: 2px solid var(--green); width: 100%; max-width: 420px; background: var(--paper); }
.picker-result { display: grid; gap: 16px; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); margin-top: 24px; }

/* charts */
.charts { display: grid; gap: 16px; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); margin-top: 24px; }
.charts iframe { width: 100%; height: 320px; border: 0; border-radius: var(--radius); background: var(--paper); }

/* faq */
details { border-bottom: 1px solid var(--line); padding: 14px 0; }
summary { font-weight: 700; cursor: pointer; font-size: 1.1rem; }
details p { margin: 10px 0 0; }

/* footer */
footer { padding: 40px 0; font-size: .95rem; color: var(--muted); }
footer ul { list-style: none; padding: 0; display: flex; flex-wrap: wrap; gap: 8px 20px; }
.credit { margin-top: 24px; font-size: .8rem; opacity: .75; }
.credit a { color: inherit; }
.note { font-size: .9rem; color: var(--muted); }

/* poster (A4) */
.poster { max-width: 800px; margin: 0 auto; padding: 32px 24px; text-align: center; }
.poster h1 { font-size: 3rem; }
.poster .icons { font-size: 3rem; letter-spacing: .3em; margin: 16px 0; }
.poster .qr { width: 220px; height: 220px; }
.poster ul { list-style: none; padding: 0; columns: 2; font-size: 1.1rem; }
.poster .noprint { margin-top: 24px; }
@media print {
  @page { size: A4; margin: 12mm; }
  :root { background: #fff; font-size: 16px; }
  .noprint { display: none; }
}

/* systems showcase */
#systems { background: var(--ink) !important; color: #fff; }
#systems .lead { color: #c9d4ce; }
.sys-grid { display: grid; gap: 20px; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); margin-top: 32px; }
@media (max-width: 400px) { .sys-grid { grid-template-columns: 1fr; } }
.sys { background: var(--paper); color: var(--ink); border-radius: var(--radius); padding: 24px; box-shadow: inset 0 8px 0 var(--c, var(--green)); padding-top: 32px; display: flex; flex-direction: column; }
.sys .btns { margin-top: auto; padding-top: 12px; }
.sys-short { font-size: 2.2rem; font-weight: 800; letter-spacing: -.02em; color: var(--c, var(--green)); margin: 0; line-height: 1.1; }
.sys h3 { margin-top: 4px; color: var(--muted); font-size: 1rem; }
.tag { display: inline-block; background: var(--sun-soft); color: #8a5a00; font-weight: 700; font-size: .85rem; padding: 3px 10px; border-radius: 99px; margin: 6px 0; align-self: flex-start; }
.sys-afcfta { --c: #0f6b4a; } .sys-tripartite { --c: #1f5fa8; } .sys-eac { --c: #0c8a8a; }
.sys-eccas { --c: #b4471c; } .sys-drc { --c: #2b6fd6; } .sys-burundi { --c: #c62a3a; }
.store { display: inline-flex; align-items: center; gap: 6px; background: #111; color: #fff; padding: 10px 16px; border-radius: 10px; text-decoration: none; font-weight: 700; }
.store:hover { background: #333; }
.sys .btn { flex-basis: 100%; text-align: center; }
.sys .store { flex: 1; justify-content: center; }

/* app screenshots carousel (CSS scroll-snap, no JS) */
.slides { display: flex; gap: 20px; overflow-x: auto; scroll-snap-type: x mandatory; padding: 24px 4px 16px; margin-top: 8px; -webkit-overflow-scrolling: touch; }
.slides figure { flex: 0 0 200px; margin: 0; scroll-snap-align: start; text-align: center; }
.slides img { width: 200px; height: 400px; object-fit: cover; object-position: top; border: 8px solid #111; border-radius: 28px; background: #fff; box-shadow: 0 10px 24px rgba(0,0,0,.15); }
.slides figcaption { margin-top: 8px; font-weight: 700; color: var(--muted); }

/* Arabic: Atkinson has no Arabic glyphs */
:lang(ar) { font-family: "Noto Sans Arabic", "Atkinson Hyperlegible", system-ui, sans-serif; }
:lang(ar) h1, :lang(ar) h2 { letter-spacing: 0; }
:lang(zh) { font-family: "Atkinson Hyperlegible", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", "Noto Sans CJK SC", sans-serif; }
:lang(zh) h1, :lang(zh) h2 { letter-spacing: 0; }
.slide-stores { display: flex; gap: 6px; justify-content: center; margin-top: 8px; }
.slide-stores .store { padding: 7px 10px; font-size: .8rem; border-radius: 8px; }
/* full-bleed carousel: edge to edge of the window, first slide aligned with the content column */
#apps { overflow: hidden; }
#apps .slides { margin-inline: calc(50% - 50vw); padding-inline: max(16px, calc(50vw - 524px)); scroll-padding-inline: max(16px, calc(50vw - 524px)); }
/* carousel arrows + visible scrollbar */
#apps .wrap { position: relative; }
.slides-nav { position: absolute; inset-inline-end: 16px; top: 0; display: flex; gap: 8px; }
.slides-btn { width: 48px; height: 48px; border-radius: 50%; border: 2px solid var(--green); background: var(--paper); color: var(--green); font-size: 1.8rem; line-height: 1; cursor: pointer; display: grid; place-items: center; padding: 0 0 4px; }
.slides-btn:hover:not(:disabled) { background: var(--green); color: #fff; }
.slides-btn:disabled { opacity: .3; cursor: default; }
[dir="rtl"] .slides-btn { transform: scaleX(-1); }
.slides { scrollbar-color: var(--green) var(--green-soft); scrollbar-width: thin; }
.slides::-webkit-scrollbar { height: 8px; }
.slides::-webkit-scrollbar-track { background: var(--green-soft); border-radius: 99px; }
.slides::-webkit-scrollbar-thumb { background: var(--green); border-radius: 99px; }
@media (max-width: 600px) { .slides-nav { position: static; justify-content: flex-end; margin-top: 8px; } }
/* wide screens: show all screenshots as 2 rows of 5, no scrolling needed */
@media (min-width: 1180px) {
  #apps .slides { display: grid; grid-template-columns: repeat(5, 200px); justify-content: space-between; row-gap: 32px; overflow: visible; margin-inline: 0; padding-inline: 0; }
  .slides-nav, .swipe-hint { display: none; }
}

/* NTB explainer */
.ntb-big { font-size: clamp(1.3rem, 3.2vw, 1.8rem); line-height: 1.4; max-width: 34em; margin: 0 0 24px; }
.ntb-word { display: flex; flex-wrap: wrap; gap: 12px; margin: 8px 0 32px; }
.ntb-word div { background: var(--green-soft); border-radius: var(--radius); padding: 12px 18px; }
.ntb-word b { font-size: 1.5rem; color: var(--green); margin-inline-end: 8px; }
.compare { display: grid; gap: 16px; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }
.compare ul { margin: 0 0 16px; padding-inline-start: 20px; }
.compare li { margin-bottom: 6px; }
.compare-ok { border-color: var(--green); }
.story { display: flex; gap: 16px; align-items: flex-start; margin-top: 24px; padding: 24px; border-radius: var(--radius); background: var(--paper); border: 1px dashed var(--line); }
section:nth-of-type(even) .story { background: var(--bg); }
.story .icon { font-size: 3rem; }
.story p { margin: 0; }