/* ===== Design tokens ===== */
:root {
  --bg:        #14171a;
  --bg-2:      #1a1e22;
  --surface:   #1f242a;
  --line:      rgba(255,255,255,.10);
  --line-2:    rgba(255,255,255,.18);
  --ink:       #eef1f4;
  --ink-2:     #a8b0b8;
  --ink-3:     #757d85;
  --amber:     #f0a03c;
  --amber-hi:  #fab751;
  --amber-dim: rgba(240,160,60,.14);
  --maxw:      1180px;
  --measure:   68ch;
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 400 17px/1.65 "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, .display, .brand, .stat-v, .btn, .kicker, .main-nav a {
  font-family: "Barlow Condensed", "Oswald", Impact, system-ui, sans-serif;
}

a { color: inherit; }
img { max-width: 100%; display: block; }

.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }
.narrow { max-width: var(--measure); }

/* ===== Prototype banner ===== */
.proto-bar {
  background: #2a2416;
  border-bottom: 1px solid rgba(240,160,60,.28);
  color: #d9b877;
  font-size: 12.5px;
  letter-spacing: .02em;
  padding: 7px 24px;
  text-align: center;
}
.proto-bar .warn { color: var(--amber-hi); }

/* ===== Header ===== */
.site-head { border-bottom: 1px solid var(--line); background: var(--bg); position: sticky; top: 0; z-index: 20; }
.head-in { max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }

.row-top {
  display: flex; align-items: center; justify-content: space-between;
  gap: 16px; padding: 14px 0 10px;
}
.brand {
  font-size: 32px; font-weight: 700; letter-spacing: .09em; text-transform: uppercase;
  text-decoration: none; line-height: 1; display: inline-flex; align-items: center; gap: 15px;
}
.brand-mark { width: 41px; height: 36px; flex: 0 0 auto; display: block; fill: var(--ink); }
.brand-mark .beam { fill: var(--amber); }
.brand-txt { display: block; }
.brand small {
  display: block; font-family: "Inter", sans-serif; font-size: 11px; font-weight: 500;
  letter-spacing: .15em; color: var(--ink-3); margin-top: 5px; text-transform: uppercase;
}
@media (max-width: 820px) {
  .brand { font-size: 24px; gap: 11px; }
  .brand-mark { width: 32px; height: 28px; }
  .brand small { font-size: 9px; letter-spacing: .12em; margin-top: 4px; }
}
.sec-nav { display: flex; align-items: center; flex-wrap: wrap; gap: 18px; }
.sec-nav a { color: var(--ink-2); text-decoration: none; font-size: 13px; letter-spacing: .02em; }
.sec-nav a:hover, .main-nav a:hover { color: var(--amber-hi); }
.sec-nav a[aria-current="page"] { color: var(--ink); }
.sep { width: 1px; height: 14px; background: var(--line-2); }
.lang { font-size: 12px !important; letter-spacing: .06em; }
.lang.on { color: var(--amber) !important; }

.main-nav { display: flex; flex-wrap: wrap; gap: 26px; padding: 4px 0 13px; }
.main-nav a {
  color: var(--ink); text-decoration: none; font-size: 18px; font-weight: 500;
  text-transform: uppercase; letter-spacing: .05em; padding-bottom: 3px;
  border-bottom: 2px solid transparent;
}
.main-nav a[aria-current="page"] { border-bottom-color: var(--amber); }

/* ===== Hero ===== */
.hero { position: relative; overflow: hidden; border-bottom: 1px solid var(--line); }
.hero::before {
  content: ""; position: absolute; inset: 0;
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(115% 85% at 78% 15%, #000 10%, transparent 72%);
  -webkit-mask-image: radial-gradient(115% 85% at 78% 15%, #000 10%, transparent 72%);
  opacity: .85;
}
.hero::after {
  content: ""; position: absolute; right: -10%; top: -30%;
  width: 780px; height: 780px; border-radius: 50%;
  background: radial-gradient(circle, rgba(240,160,60,.20) 0%, transparent 62%);
  pointer-events: none;
}
.hero-in { position: relative; padding: 92px 0 84px; }
.kicker {
  display: inline-block; font-size: 13px; letter-spacing: .18em; text-transform: uppercase;
  color: var(--amber); border-left: 2px solid var(--amber); padding-left: 12px; margin-bottom: 26px;
}
h1 {
  font-size: clamp(40px, 6.4vw, 82px); line-height: 1.02; margin: 0 0 26px;
  text-transform: uppercase; font-weight: 600; letter-spacing: .005em; max-width: 17ch;
}
.lede { font-size: clamp(18px, 2vw, 21px); line-height: 1.6; color: var(--ink-2); max-width: 62ch; margin: 0 0 32px; }

/* ===== Buttons ===== */
.btn {
  display: inline-block; text-decoration: none; text-transform: uppercase;
  font-size: 15px; letter-spacing: .09em; font-weight: 600;
  padding: 13px 26px; border: 1px solid var(--amber); color: var(--amber); border-radius: 0;
}
.btn:hover { background: var(--amber); color: #14171a; }
.btn-solid { background: var(--amber); color: #14171a; }
.btn-solid:hover { background: var(--amber-hi); border-color: var(--amber-hi); }

/* ===== Sections ===== */
section.band { padding: 72px 0; border-bottom: 1px solid var(--line); }
section.band.alt { background: var(--bg-2); }
.eyebrow {
  font-size: 12px; letter-spacing: .2em; text-transform: uppercase;
  color: var(--ink-3); margin: 0 0 14px;
}
h2 {
  font-size: clamp(27px, 3.5vw, 42px); line-height: 1.1; margin: 0 0 22px;
  text-transform: uppercase; font-weight: 600; letter-spacing: .01em;
}
h3 { font-size: 21px; line-height: 1.25; margin: 0 0 10px; text-transform: uppercase; letter-spacing: .04em; font-weight: 600; }
p { margin: 0 0 18px; max-width: var(--measure); }
p.muted, .muted { color: var(--ink-2); }
.note { font-size: 13.5px; color: var(--ink-3); border-left: 2px solid var(--line-2); padding-left: 14px; max-width: 70ch; }

ul.list { list-style: none; padding: 0; margin: 0 0 22px; max-width: var(--measure); }
ul.list li { position: relative; padding: 10px 0 10px 26px; border-bottom: 1px solid var(--line); color: var(--ink-2); }
ul.list li::before { content: ""; position: absolute; left: 0; top: 19px; width: 10px; height: 1px; background: var(--amber); }
ul.list li b, ul.list li strong { color: var(--ink); font-weight: 600; }

/* ===== Bracket box (signature device) ===== */
.bracket {
  position: relative; background: var(--amber-dim);
  border-left: 2px solid var(--amber); padding: 22px 24px; margin: 0 0 20px; max-width: 74ch;
}
.bracket::after {
  content: ""; position: absolute; right: 0; bottom: 0; width: 16px; height: 16px;
  border-right: 2px solid var(--amber); border-bottom: 2px solid var(--amber);
}
.pull {
  font-family: "Barlow Condensed", sans-serif; text-transform: uppercase;
  font-size: clamp(22px, 3vw, 34px); line-height: 1.15; letter-spacing: .01em;
  color: var(--ink); margin: 0;
}

/* ===== Steps ===== */
.steps { display: grid; gap: 1px; background: var(--line); border: 1px solid var(--line); }
.step { background: var(--bg); padding: 26px 24px; display: grid; grid-template-columns: 56px 1fr; gap: 18px; }
.step .n {
  font-family: "Barlow Condensed", sans-serif; font-size: 40px; line-height: .9;
  color: var(--amber); font-weight: 600;
}
.step p { margin: 0; color: var(--ink-2); font-size: 16px; }

/* ===== Cards ===== */
.cards { display: grid; gap: 18px; }
.cards.c2 { grid-template-columns: repeat(2, 1fr); }
.cards.c3 { grid-template-columns: repeat(3, 1fr); }
.card {
  background: var(--surface); border: 1px solid var(--line); padding: 26px 24px;
  text-decoration: none; display: block; position: relative; transition: border-color .15s;
}
.card:hover { border-color: var(--amber); }
.card h3 { margin-bottom: 9px; }
.card p { color: var(--ink-2); font-size: 15.5px; margin: 0; max-width: none; }
.card .more { display: inline-block; margin-top: 14px; color: var(--amber); font-size: 13px; letter-spacing: .1em; text-transform: uppercase; }

/* ===== Stats ===== */
.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); }
.stat { background: var(--bg); padding: 28px 22px; }
.stat-v { font-size: clamp(34px, 4.4vw, 54px); line-height: 1; color: var(--amber); font-weight: 600; }
.stat-l { font-size: 12.5px; letter-spacing: .12em; text-transform: uppercase; color: var(--ink-2); margin-top: 10px; }

/* ===== Definition rows ===== */
.defs { border-top: 1px solid var(--line); max-width: 90ch; }
.defs div { display: grid; grid-template-columns: 300px 1fr; gap: 20px; padding: 15px 0; border-bottom: 1px solid var(--line); }
.defs dt, .defs .k { color: var(--ink-3); font-size: 14px; letter-spacing: .04em; text-transform: uppercase; }
.defs .v { color: var(--ink); }

/* ===== Reference cards ===== */
.refs { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; }
.ref { border: 1px solid var(--line); background: var(--surface); padding: 24px; }
.ref .sect { font-size: 12px; letter-spacing: .16em; text-transform: uppercase; color: var(--amber); }
.ref h3 { margin: 10px 0 14px; font-size: 20px; }
.ref .meta { display: grid; gap: 7px; margin-top: 14px; border-top: 1px solid var(--line); padding-top: 14px; }
.ref .meta span { display: grid; grid-template-columns: 130px 1fr; gap: 12px; font-size: 14px; color: var(--ink-2); }
.ref .meta b { color: var(--ink-3); font-weight: 400; text-transform: uppercase; font-size: 12px; letter-spacing: .08em; }

/* ===== Insight list ===== */
.posts { border-top: 1px solid var(--line); }
.post { display: block; text-decoration: none; padding: 24px 0; border-bottom: 1px solid var(--line); }
.post:hover h3 { color: var(--amber-hi); }
.post .pmeta { font-size: 12px; letter-spacing: .12em; text-transform: uppercase; color: var(--ink-3); margin-bottom: 9px; }
.post .pmeta em { color: var(--amber); font-style: normal; }
.post h3 { font-size: 24px; margin: 0 0 8px; text-transform: none; letter-spacing: 0; }
.post p { color: var(--ink-2); margin: 0; font-size: 15.5px; }

/* ===== CTA ===== */
.cta { background: var(--bg-2); border: 1px solid var(--line); border-left: 3px solid var(--amber); padding: 40px 36px; }
.cta h2 { margin-bottom: 12px; }

/* ===== Footer ===== */
.site-foot { padding: 56px 0 64px; color: var(--ink-2); font-size: 14.5px; background: var(--bg-2); }
.foot-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 36px; }
.foot-grid h4 { font-size: 12px; letter-spacing: .16em; text-transform: uppercase; color: var(--ink-3); margin: 0 0 14px; font-weight: 500; }
.foot-grid a { text-decoration: none; display: block; padding: 4px 0; }
.foot-grid a:hover { color: var(--amber-hi); }
.foot-bottom { margin-top: 40px; padding-top: 22px; border-top: 1px solid var(--line); font-size: 13px; color: var(--ink-3); display: flex; flex-wrap: wrap; gap: 8px 22px; }
.nowrap { white-space: nowrap; unicode-bidi: isolate; }

/* ===== Page head ===== */
.phead { padding: 64px 0 40px; border-bottom: 1px solid var(--line); }
.phead h1 { font-size: clamp(32px, 4.6vw, 56px); max-width: 20ch; margin-bottom: 18px; }

/* ===== Responsive ===== */
@media (max-width: 900px) {
  .cards.c3, .cards.c2, .refs { grid-template-columns: 1fr; }
  .stats { grid-template-columns: repeat(2, 1fr); }
  .foot-grid { grid-template-columns: 1fr; }
  .defs div { grid-template-columns: 1fr; gap: 4px; }
  .hero-in { padding: 60px 0 56px; }
  section.band { padding: 52px 0; }
  .main-nav { gap: 16px; }
  .main-nav a { font-size: 16px; }
}
@media (max-width: 560px) {
  .stats { grid-template-columns: 1fr; }
  .step { grid-template-columns: 40px 1fr; gap: 12px; }
  .step .n { font-size: 30px; }
  .ref .meta span { grid-template-columns: 1fr; gap: 2px; }
  .cta { padding: 28px 22px; }
}

/* ===== RTL ===== */
[dir="rtl"] .kicker { border-left: 0; border-right: 2px solid var(--amber); padding-left: 0; padding-right: 12px; }
[dir="rtl"] .bracket { border-left: 0; border-right: 2px solid var(--amber); }
[dir="rtl"] ul.list li { padding-left: 0; padding-right: 26px; }
[dir="rtl"] ul.list li::before { left: auto; right: 0; }
[dir="rtl"] .cta { border-left: 1px solid var(--line); border-right: 3px solid var(--amber); }
[dir="rtl"] .note { border-left: 0; border-right: 2px solid var(--line-2); padding-left: 0; padding-right: 14px; }

/* ===== Imagery ===== */
.hero.has-bg::before,
.phead.has-bg::before {
  content: ""; position: absolute; inset: 0;
  background-image: var(--bg-img);
  background-size: cover; background-position: center;
  opacity: .40; mask-image: none; -webkit-mask-image: none;
  filter: grayscale(.35) contrast(1.05);
}
.hero.has-bg::after {
  content: ""; position: absolute; inset: 0; width: auto; height: auto;
  border-radius: 0; right: 0; top: 0;
  background:
    linear-gradient(to right, var(--bg) 6%, rgba(20,23,26,.72) 46%, rgba(20,23,26,.30) 100%),
    linear-gradient(to top, var(--bg) 2%, transparent 46%);
}
.hero.has-bg .hero-in { position: relative; z-index: 2; }

.phead { position: relative; overflow: hidden; }
.phead.has-bg { border-bottom: 1px solid var(--line); }
.phead.has-bg::after {
  content: ""; position: absolute; inset: 0;
  background:
    linear-gradient(to right, var(--bg) 10%, rgba(20,23,26,.80) 55%, rgba(20,23,26,.45) 100%),
    linear-gradient(to top, var(--bg) 2%, transparent 55%);
}
.phead.has-bg .wrap { position: relative; z-index: 2; }
.phead.has-bg { padding: 88px 0 56px; }

figure.fig { margin: 6px 0 26px; border: 1px solid var(--line); background: var(--bg-2); }
figure.fig img { width: 100%; height: auto; display: block; filter: grayscale(.15); }
figure.fig figcaption {
  padding: 12px 18px; font-size: 13.5px; color: var(--ink-3);
  border-top: 1px solid var(--line); max-width: none;
}

.split { display: grid; grid-template-columns: 1fr 1.15fr; gap: 30px; align-items: start; margin-bottom: 26px; }
.split-img { border: 1px solid var(--line); overflow: hidden; }
.split-img img { width: 100%; height: 100%; object-fit: cover; display: block; filter: grayscale(.2); }
.split-txt p { margin-bottom: 14px; }

.card { padding: 0; overflow: hidden; }
.card .card-body { display: block; padding: 24px 22px; }
.card-img { display: block; aspect-ratio: 16 / 9; overflow: hidden; background: var(--bg-2); border-bottom: 1px solid var(--line); }
.card-img img { width: 100%; height: 100%; object-fit: cover; filter: grayscale(.45) contrast(1.05); transition: filter .2s, transform .3s; }
.card.has-img:hover .card-img img { filter: grayscale(0) contrast(1.05); transform: scale(1.03); }

@media (max-width: 900px) {
  .split { grid-template-columns: 1fr; }
  .phead.has-bg { padding: 60px 0 44px; }
}
[dir="rtl"] .hero.has-bg::after,
[dir="rtl"] .phead.has-bg::after {
  background:
    linear-gradient(to left, var(--bg) 6%, rgba(20,23,26,.72) 46%, rgba(20,23,26,.30) 100%),
    linear-gradient(to top, var(--bg) 2%, transparent 46%);
}

/* ===== Article ===== */
h1.art-h1 { text-transform: none; letter-spacing: 0; font-size: clamp(30px, 4vw, 48px); max-width: 24ch; }
.prose { max-width: 72ch; font-size: 17.5px; }
.prose h2 {
  font-size: clamp(22px, 2.6vw, 30px); margin: 40px 0 16px;
  text-transform: none; letter-spacing: 0;
}
.prose h3 { text-transform: none; letter-spacing: 0; font-size: 21px; margin: 28px 0 10px; }
.prose p { color: var(--ink-2); margin: 0 0 18px; max-width: none; }
.prose ul, .prose ol { color: var(--ink-2); padding-left: 22px; margin: 0 0 20px; }
.prose li { margin-bottom: 8px; }
.prose strong { color: var(--ink); }
.prose hr { border: 0; border-top: 1px solid var(--line); margin: 36px 0; }
.prose em { color: var(--ink-3); }
a.post { cursor: pointer; }
[dir="rtl"] .prose ul, [dir="rtl"] .prose ol { padding-left: 0; padding-right: 22px; }