:root {
  --bg: #0e0c09;
  --panel: #171310;
  --panel-2: #120f0c;
  --line: #3a2f24;
  --ink: #efe7da;
  --dim: #a2957f;
  --gold: #d4a24e;
  --gold-soft: rgba(212, 162, 78, 0.14);
  --amber: #c98a3d;
  --jade: #4e9e7a;
  --serif: "Fraunces", Georgia, serif;
  --sans: "Inter", system-ui, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, monospace;
  --radius: 12px;
  --max-w: 1140px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  background: var(--bg);
  color: var(--ink);
  font: 14.5px/1.6 var(--sans);
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; }

/* ---------- Top bar ---------- */
.top {
  position: sticky; top: 0; z-index: 50;
  background: rgba(14, 12, 9, 0.88);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}
.top-inner {
  max-width: var(--max-w); margin: 0 auto;
  padding: 14px 24px;
  display: flex; align-items: center; gap: 18px; flex-wrap: wrap;
}
.brand {
  font-family: var(--serif);
  font-weight: 700; font-size: 19px; letter-spacing: 0.06em;
}
.brand span { color: var(--dim); font-weight: 300; }
.brand em { font-style: normal; color: var(--gold); }
.badge {
  font: 10.5px var(--mono);
  letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--gold);
  border: 1px solid var(--gold);
  border-radius: 99px;
  padding: 4px 11px;
  display: inline-flex; align-items: center; gap: 7px;
}
.dot { width: 6px; height: 6px; border-radius: 50%; background: var(--gold); }
.top-nav { margin-left: auto; display: flex; gap: 20px; }
.top-nav a { font-size: 13px; color: var(--dim); transition: color .2s; }
.top-nav a:hover { color: var(--ink); }

/* ---------- Hero ---------- */
.hero { position: relative; overflow: hidden; padding: 104px 24px 84px; }
.hero-route {
  position: absolute; inset: 0; pointer-events: none; opacity: 0.5;
  background:
    radial-gradient(ellipse 55% 40% at 20% 15%, rgba(212,162,78,0.10), transparent 70%),
    radial-gradient(ellipse 45% 35% at 85% 80%, rgba(78,158,122,0.07), transparent 70%);
}
.hero-route::after {
  content: "";
  position: absolute; left: -5%; right: -5%; top: 46%;
  height: 200px;
  background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 1200 200' preserveAspectRatio='none'%3E%3Cpath d='M0 150 Q150 40 300 110 T600 90 T900 130 T1200 60' fill='none' stroke='%23d4a24e' stroke-width='1.4' stroke-dasharray='7 9' opacity='0.55'/%3E%3C/svg%3E") no-repeat center / 100% 100%;
}
.hero-inner { position: relative; max-width: 860px; margin: 0 auto; text-align: center; }
.kicker {
  font: 11px var(--mono); letter-spacing: 0.16em; text-transform: uppercase;
  color: var(--gold); margin-bottom: 20px;
}
.hero h1 {
  font-family: var(--serif);
  font-size: clamp(40px, 6.5vw, 72px);
  font-weight: 600; letter-spacing: -0.01em; line-height: 1.02;
  margin-bottom: 22px;
}
.gold {
  background: linear-gradient(95deg, var(--gold), #e8c987 55%, var(--gold));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.lede { color: var(--dim); font-size: clamp(15px, 1.8vw, 18px); max-width: 620px; margin: 0 auto 36px; }
.hero-cta { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; margin-bottom: 60px; }

.btn-gold {
  background: var(--gold); color: #1a130a;
  font-weight: 700; font-size: 14.5px;
  padding: 13px 28px; border-radius: 10px;
  transition: filter .2s, transform .15s;
}
.btn-gold:hover { filter: brightness(1.1); transform: translateY(-1px); }
.btn-ghost {
  border: 1px solid var(--line); color: var(--ink);
  font-weight: 500; font-size: 14.5px;
  padding: 13px 28px; border-radius: 10px;
  transition: border-color .2s, background .2s;
}
.btn-ghost:hover { border-color: var(--gold); background: var(--gold-soft); }

.hero-stats {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px;
  border: 1px solid var(--line); border-radius: var(--radius);
  background: rgba(23, 19, 16, 0.8);
  backdrop-filter: blur(8px);
  padding: 24px 20px;
}
.stat { padding: 4px 14px; text-align: left; border-left: 1px solid var(--line); }
.stat:first-child { border-left: none; }
.stat dt { font: 10.5px var(--mono); letter-spacing: 0.1em; text-transform: uppercase; color: var(--dim); margin-bottom: 6px; }
.stat dd { font: 600 26px var(--serif); color: var(--ink); }
.stat-sub { font-size: 11.5px; color: var(--dim); }

/* ---------- Sections ---------- */
.section { max-width: var(--max-w); margin: 0 auto; padding: 84px 24px; }
.section-head { max-width: 680px; margin-bottom: 46px; }
.section-head h2 { font-family: var(--serif); font-size: clamp(26px, 3.4vw, 38px); font-weight: 600; margin-bottom: 12px; }
.section-sub { color: var(--dim); font-size: 15px; }

/* ---------- Corridor selector ---------- */
.corridor-tabs { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 30px; }
.tab {
  background: transparent;
  border: 1px solid var(--line);
  color: var(--dim);
  font: 12.5px var(--mono); letter-spacing: 0.04em;
  padding: 10px 20px; border-radius: 99px;
  transition: all .2s;
}
.tab:hover { color: var(--ink); border-color: var(--gold); }
.tab.active { background: var(--gold); border-color: var(--gold); color: #1a130a; font-weight: 500; }

.corridor-meta {
  border-left: 2px solid var(--gold);
  padding: 6px 0 6px 18px;
  margin-bottom: 30px;
}
.corridor-meta h3 { font-family: var(--serif); font-size: 20px; font-weight: 600; }
.corridor-meta p { color: var(--dim); font-size: 14px; max-width: 640px; }

.waypoints { list-style: none; }
.wp {
  display: grid;
  grid-template-columns: 44px 1.1fr 1.6fr auto;
  gap: 18px; align-items: center;
  padding: 15px 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  margin-bottom: 10px;
  background: var(--panel-2);
  transition: border-color .2s, transform .2s;
}
.wp:hover { border-color: var(--gold); transform: translateX(4px); }
.wp-num {
  font: 500 13px var(--mono);
  color: var(--gold);
  width: 40px; height: 40px;
  border: 1px solid var(--line);
  border-radius: 50%;
  display: grid; place-items: center;
}
.wp-name b { display: block; font-size: 15px; font-weight: 600; }
.wp-name span { font: 11px var(--mono); color: var(--dim); }
.wp-note { font-size: 13px; color: var(--dim); }
.wp-status {
  font: 10px var(--mono); letter-spacing: 0.08em; text-transform: uppercase;
  padding: 4px 10px; border-radius: 99px;
  white-space: nowrap;
}
.wp-status.live { color: var(--jade); border: 1px solid rgba(78,158,122,0.45); }
.wp-status.queue { color: var(--amber); border: 1px solid rgba(201,138,61,0.45); }

/* ---------- Region grid ---------- */
.region-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.region-card {
  position: relative;
  background: linear-gradient(165deg, var(--panel), var(--panel-2));
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 26px 24px;
  transition: border-color .25s, transform .25s;
}
.region-card:hover { border-color: var(--gold); transform: translateY(-3px); }
.region-tag {
  display: inline-block;
  font: 10px var(--mono); letter-spacing: 0.12em; text-transform: uppercase;
  padding: 3px 10px; border-radius: 99px;
  margin-bottom: 16px;
}
.region-tag.gold { color: var(--gold); border: 1px solid rgba(212,162,78,0.5); }
.region-tag.amber { color: var(--amber); border: 1px solid rgba(201,138,61,0.5); }
.region-tag.jade { color: var(--jade); border: 1px solid rgba(78,158,122,0.5); }
.region-card h3 { font-family: var(--serif); font-size: 20px; font-weight: 600; margin-bottom: 4px; }
.region-era { font: 11.5px var(--mono); color: var(--gold); margin-bottom: 12px; }
.region-card p:not(.region-era) { font-size: 13.5px; color: var(--dim); margin-bottom: 18px; }
.region-link { font-size: 13px; font-weight: 600; color: var(--gold); }
.region-link:hover { text-decoration: underline; }
.region-link.queue { color: var(--amber); cursor: default; font-family: var(--mono); font-size: 11px; letter-spacing: 0.06em; }
.region-link.queue:hover { text-decoration: none; }

/* ---------- Timeline ---------- */
.timeline { list-style: none; position: relative; padding-left: 34px; max-width: 780px; }
.timeline::before {
  content: ""; position: absolute; left: 8px; top: 8px; bottom: 8px;
  width: 1.5px;
  background: linear-gradient(var(--gold), var(--jade), var(--gold));
  opacity: 0.5;
}
.tl-item {
  position: relative;
  padding: 20px 24px;
  margin-bottom: 18px;
  background: var(--panel-2);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: border-color .25s;
}
.tl-item:hover { border-color: var(--gold); }
.tl-item::before {
  content: ""; position: absolute; left: -31px; top: 26px;
  width: 11px; height: 11px; border-radius: 50%;
  background: var(--bg); border: 2px solid var(--gold);
}
.tl-item.active::before { background: var(--gold); box-shadow: 0 0 0 5px rgba(212,162,78,0.18); }
.tl-item time { font: 11.5px var(--mono); letter-spacing: 0.08em; color: var(--gold); }
.tl-item h3 { font-family: var(--serif); font-size: 18px; font-weight: 600; margin: 5px 0 7px; }
.tl-item p { font-size: 13.5px; color: var(--dim); }

/* ---------- Network ---------- */
.network-panel {
  display: grid; grid-template-columns: 1fr 1.1fr; gap: 40px; align-items: center;
  background: linear-gradient(135deg, var(--gold-soft), transparent 60%), var(--panel-2);
  border: 1px solid var(--line);
  border-radius: calc(var(--radius) + 4px);
  padding: 46px 44px;
}
.network-panel h2 { font-family: var(--serif); font-size: clamp(22px, 2.6vw, 30px); font-weight: 600; margin-bottom: 10px; }
.network-links { display: flex; flex-direction: column; gap: 12px; }
.net-card {
  display: block;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 18px 22px;
  background: var(--panel);
  transition: border-color .2s, transform .2s;
}
.net-card:hover { border-color: var(--gold); transform: translateX(4px); }
.net-card b { display: block; font-size: 15px; margin-bottom: 3px; }
.net-card span { font-size: 12.5px; color: var(--dim); }

/* ---------- Footer ---------- */
.footer { border-top: 1px solid var(--line); background: var(--panel-2); }
.footer-inner {
  max-width: var(--max-w); margin: 0 auto;
  display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr; gap: 36px;
  padding: 54px 24px 38px;
}
.footer-brand p { font-size: 12.5px; color: var(--dim); margin-top: 14px; max-width: 300px; }
.footer-col h4 {
  font: 10.5px var(--mono); letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--ink); margin-bottom: 13px;
}
.footer-col a { display: block; font-size: 13px; color: var(--dim); padding: 4px 0; transition: color .2s; }
.footer-col a:hover { color: var(--gold); }
.footer-bar {
  border-top: 1px solid var(--line);
  max-width: var(--max-w); margin: 0 auto;
  padding: 18px 24px;
  display: flex; justify-content: space-between; gap: 14px; flex-wrap: wrap;
  font-size: 12px; color: var(--dim);
}
.footer-note { opacity: 0.8; }

/* ============================================================
   AJOUTS ARCHITECTE — sélecteur de langue et typographie chinoise.
   Ces règles n'existaient pas dans la feuille d'origine : le
   sélecteur EN / 中文 s'affichait en liens bruts.
   ============================================================ */

/* ---------- Sélecteur de langue ---------- */
.lang {
  display: flex;
  border: 1px solid var(--line);
  border-radius: 99px;
  overflow: hidden;
  flex: none;
}
.lang a {
  font: 11.5px var(--mono);
  letter-spacing: 0.06em;
  color: var(--dim);
  padding: 6px 13px;
  border-right: 1px solid var(--line);
  transition: color .2s, background .2s;
  white-space: nowrap;
}
.lang a:last-child { border-right: none; }
.lang a:hover { color: var(--ink); background: var(--panel); }
.lang a.active { color: var(--gold); background: var(--gold-soft); }

/* Sur la barre du haut, le sélecteur se pose après la navigation.
   `.top-nav` porte déjà margin-left:auto, il pousse tout vers la droite. */
.top-inner .lang { margin-left: 4px; }

/* ---------- Typographie chinoise ---------- */
/* Appliqué uniquement quand la page déclare lang="zh-…".
   Fraunces ne couvre pas les sinogrammes : sans cette règle, le
   navigateur retombe sur une police système au rendu inégal. */
html[lang^="zh"] body {
  font-family: "Inter", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
}
html[lang^="zh"] .brand,
html[lang^="zh"] .hero h1,
html[lang^="zh"] .section-head h2,
html[lang^="zh"] .region-card h3,
html[lang^="zh"] .tl-item h3,
html[lang^="zh"] .corridor-meta h3,
html[lang^="zh"] .network-panel h2,
html[lang^="zh"] .stat dd {
  font-family: "Fraunces", "Noto Serif SC", "Songti SC", Georgia, serif;
}
/* Le chinois n'a pas besoin du crénage serré prévu pour le latin */
html[lang^="zh"] .hero h1 { letter-spacing: 0.02em; }
/* Les libellés en petites capitales ne s'appliquent pas aux sinogrammes */
html[lang^="zh"] .badge,
html[lang^="zh"] .kicker,
html[lang^="zh"] .region-tag,
html[lang^="zh"] .stat dt,
html[lang^="zh"] .footer-col h4,
html[lang^="zh"] .wp-status { text-transform: none; letter-spacing: 0.04em; }

/* ---------- Accessibilité ---------- */
:focus-visible { outline: 2px solid var(--gold); outline-offset: 3px; border-radius: 4px; }
@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; }
  html { scroll-behavior: auto; }
}

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .top-nav { margin-left: 0; }
  .hero-stats { grid-template-columns: repeat(2, 1fr); }
  .stat:nth-child(3) { border-left: none; }
  .stat { border-top: 1px solid var(--line); padding-top: 12px; }
  .stat:nth-child(-n+2) { border-top: none; }
  .region-grid { grid-template-columns: 1fr 1fr; }
  .network-panel { grid-template-columns: 1fr; padding: 34px 26px; }
  .footer-inner { grid-template-columns: 1fr 1fr; }
  .wp { grid-template-columns: 40px 1fr; }
  .wp-note, .wp-status { grid-column: 2; }
}
@media (max-width: 560px) {
  .region-grid { grid-template-columns: 1fr; }
  .footer-inner { grid-template-columns: 1fr; }
  .top-inner { justify-content: center; text-align: center; }
  .top-inner .lang { margin-left: 0; }
}