/* ════════════════════════════════════════════════════════════════════════
   WhaleWatch — Aquarium Design System
   ──────────────────────────────────────────────────────────────────────
   Immersive ocean theme: deep gradients, animated rays, bubbles,
   gradient borders, KPI numbers with text-gradient, whale emojis as
   brand glyphs. Used across index / guide / bot / why pages.
═══════════════════════════════════════════════════════════════════════ */

:root{
  /* Surfaces — Aquarium deep */
  --deep:      #01060d;
  --mid:       #03162a;
  --surface:   #082a48;
  --surface-2: #0e3e64;
  --border:    #1a558a;
  --border-2:  #2674b5;

  /* Text */
  --text:      #dff1ff;
  --text-soft: #a8cce4;
  --muted:     #7baacf;
  --muted-2:   #5c8aaf;
  --dim:       #4e7a9e;

  /* Brand palette (luminous) */
  --aqua:      #00e2ff;
  --bio:       #5eff9e;
  --coral:     #ff7a9c;
  --orchid:    #c47dff;
  --gold:      #ffd970;
  --indigo:    #7aa9ff;

  /* Category aliases */
  --cyan: var(--aqua);
  --green: var(--bio);
  --blue: var(--indigo);
  --c-mev: var(--coral);
  --c-dex: var(--indigo);
  --c-mm:  var(--orchid);
  --c-sc:  var(--gold);
  --c-unk: var(--muted-2);

  /* Type */
  --fs-xs: 11px;
  --fs-sm: 12px;
  --fs-md: 13px;
  --fs-lg: 15px;
  --fs-xl: 20px;
  --fs-2xl: 28px;
  --fs-3xl: 40px;
  --lh-tight: 1.25;
  --lh-normal: 1.55;
  --lh-loose: 1.75;

  /* Spacing 4/8 scale */
  --s-1:4px; --s-2:8px; --s-3:12px; --s-4:16px; --s-5:20px;
  --s-6:24px; --s-7:32px; --s-8:48px; --s-9:64px; --s-10:96px;

  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 18px;
  --radius-xl: 24px;

  --t-fast: 140ms;
  --t-med:  220ms;
  --t-slow: 320ms;
  --ease:   cubic-bezier(.22,.6,.36,1);

  --z-nav: 40; --z-header: 50; --z-toast: 90; --z-modal: 100;
  --header-h: 64px;
}

/* ── Reset ──────────────────────────────────────────────────────────── */
*,*::before,*::after{box-sizing:border-box}
html,body{margin:0;padding:0}

html {
  background:
    radial-gradient(ellipse 100% 80% at 50% 110%, #0a3a64 0%, transparent 60%),
    radial-gradient(ellipse 60% 60% at 20% 30%, rgba(0,226,255,.10) 0%, transparent 60%),
    radial-gradient(ellipse 50% 50% at 80% 50%, rgba(196,125,255,.07) 0%, transparent 55%),
    linear-gradient(180deg, #01060d 0%, #03162a 60%, #082a48 100%);
  background-attachment: fixed;
  min-height: 100vh;
}
body{
  background: transparent;
  color: var(--text);
  font-family: 'Sora', system-ui, -apple-system, 'Segoe UI', sans-serif;
  font-size: var(--fs-md);
  line-height: var(--lh-normal);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}
/* Clip overflow on a wrapper, not body, to avoid breaking fixed/screenshot */
.bubbles { overflow: hidden; }

/* Animated caustic rays — global ocean light */
.ocean-rays{
  position: fixed; top: -60%; left: -50%;
  width: 200%; height: 220%;
  background: conic-gradient(
    from 0deg at 50% 0%,
    transparent 0deg, rgba(0,226,255,.030) 8deg, transparent 16deg,
    transparent 90deg, rgba(94,255,158,.025) 98deg, transparent 106deg,
    transparent 180deg, rgba(196,125,255,.025) 188deg, transparent 196deg,
    transparent 270deg
  );
  animation: ocean-rays 90s linear infinite;
  pointer-events: none; z-index: 0; transform-origin: 50% 0%;
}
@keyframes ocean-rays { to { transform: rotate(360deg); } }

/* Bubbles layer */
.bubbles { position: fixed; inset: 0; pointer-events: none; z-index: 0; overflow: hidden; }
.bubble{
  position: absolute; border-radius: 50%;
  border: 1px solid rgba(0,226,255,.22);
  background: radial-gradient(circle at 35% 35%, rgba(0,226,255,.14), transparent 60%);
  animation: bubble-rise linear infinite;
}
@keyframes bubble-rise {
  0%   { transform: translateY(0) translateX(0); opacity: 0; }
  10%  { opacity: .75; }
  90%  { opacity: .2; }
  100% { transform: translateY(-110vh) translateX(var(--d, 12px)); opacity: 0; }
}

code, .mono, .tabular-nums {
  font-family: 'JetBrains Mono', 'Fira Code', ui-monospace, monospace;
}
.tabular-nums { font-variant-numeric: tabular-nums; }

a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; background: none; border: none; color: inherit; }

*:focus-visible{
  outline: 2px solid var(--aqua);
  outline-offset: 2px; border-radius: 4px;
}

::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: var(--border-2); }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; }
  .ocean-rays { display: none; }
  .bubble { display: none; }
}

main { position: relative; z-index: 1; }

/* ── Layout primitives ──────────────────────────────────────────────── */
.container { max-width: 1400px; margin: 0 auto; padding: 0 var(--s-6); }
.container-prose { max-width: 1100px; margin: 0 auto; padding: 0 var(--s-6); }

/* ── Crypto ticker — strip mince sous header (24px, sans pills) ────── */
.crypto-ticker {
  position: sticky; top: var(--header-h); z-index: calc(var(--z-header) - 1);
  height: 24px;
  background: rgba(1,6,13,.82);
  border-bottom: 1px solid rgba(0,226,255,.12);
  overflow: hidden;
  backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px);
  white-space: nowrap;
  display: flex; align-items: center;
}
.crypto-ticker-track {
  display: inline-flex; align-items: center; gap: 24px;
  animation: ticker-scroll 80s linear infinite;
  height: 100%;
}
.crypto-ticker:hover .crypto-ticker-track { animation-play-state: paused; }
@keyframes ticker-scroll { from { transform: translateX(0); } to { transform: translateX(-50%); } }
.ct-item {
  display: inline-flex; align-items: center; gap: 5px;
  padding: 0; background: none; border: none; border-radius: 0;
  font-family: var(--font-mono); font-size: 11px; font-weight: 500;
  color: var(--text-soft); text-decoration: none;
  transition: opacity .15s ease; flex-shrink: 0;
  height: 100%;
}
.ct-item:hover { opacity: .75; }
.ct-rank   { color: var(--muted-2); font-size: 9px; font-weight: 600; opacity: .6; }
.ct-logo   { width: 14px; height: 14px; border-radius: 50%; background: #0a1929; flex-shrink: 0; }
.ct-sym    { color: var(--text); font-weight: 700; letter-spacing: .02em; }
.ct-price  { color: var(--text-soft); font-weight: 500; }
.ct-delta  { font-weight: 700; font-size: 10px; }
.ct-delta.up   { color: var(--green); }
.ct-delta.down { color: var(--coral); }
.ct-loading { color: var(--muted); font-size: 11px; padding: 0 16px; }

/* Pas de spacer additionnel : le ticker est en flux normal après le spacer header */

/* ── Alertes temps réel (Dashboard) ────────────────────────────────── */
.alert-feed { display: flex; flex-direction: column; gap: 8px; max-height: 540px; overflow-y: auto; padding-right: 4px; }
.alert-item {
  display: flex; gap: var(--s-3); align-items: flex-start;
  padding: 10px var(--s-3);
  border-radius: 8px;
  border: 1px solid var(--border);
  border-left: 3px solid var(--c-accent, var(--aqua));
  background: var(--bg-soft);
  animation: alert-slide-in .35s ease;
  transition: background .15s, transform .15s;
}
@keyframes alert-slide-in { from { opacity: 0; transform: translateX(-6px); } to { opacity: 1; transform: translateX(0); } }
.alert-item[onclick] { cursor: pointer; }
.alert-item[onclick]:hover { background: rgba(255,255,255,.02); transform: translateX(2px); }
.alert-item--whale { --c-accent: var(--aqua); }
.alert-item--smart { --c-accent: var(--gold); }
.alert-item--mev   { --c-accent: var(--coral); }
.alert-item--new   { --c-accent: var(--green); }
.alert-icon {
  width: 28px; height: 28px; border-radius: 6px;
  display: grid; place-items: center;
  background: color-mix(in srgb, var(--c-accent) 14%, transparent);
  color: var(--c-accent);
  flex-shrink: 0;
}
.alert-body { flex: 1; min-width: 0; }
.alert-title { color: var(--text); font-weight: 600; font-size: var(--fs-sm); display: flex; align-items: center; gap: 6px; }
.alert-detail { color: var(--muted); font-size: var(--fs-xs); margin-top: 2px; }
.alert-time { color: var(--muted-2); font-size: 10px; font-family: var(--font-mono); flex-shrink: 0; align-self: flex-start; padding-top: 2px; }
.alert-sev-dot { width: 6px; height: 6px; border-radius: 50%; background: var(--coral); box-shadow: 0 0 6px var(--coral); }
.alert-item--new-flash { animation: alert-slide-in .35s ease, alert-flash 1.6s ease 1; }
@keyframes alert-flash { 0% { box-shadow: 0 0 0 0 rgba(255,198,87,.55); } 100% { box-shadow: 0 0 0 8px rgba(255,198,87,0); } }

/* ── Cross-document view transitions (header stays put on Chrome 126+) ─ */
@view-transition { navigation: auto; }

/* ── Freshness chip (Trading Zones data age) ───────────────────────── */
.freshness-chip {
  display: inline-flex; align-items: center; gap: 4px;
  margin-left: var(--s-2);
  padding: 2px 8px; border-radius: 999px;
  font-size: 10.5px; font-weight: 600; font-family: var(--font-mono);
  letter-spacing: .02em; line-height: 1;
  background: rgba(46,212,168,.10); color: var(--green);
  border: 1px solid rgba(46,212,168,.30);
  white-space: nowrap;
}
.freshness-chip.is-warn  { background: rgba(255,198,87,.10); color: var(--c-sc); border-color: rgba(255,198,87,.30); }
.freshness-chip.is-stale { background: rgba(232,77,109,.10); color: var(--c-pn); border-color: rgba(232,77,109,.35); animation: stale-pulse 2.4s ease-in-out infinite; }
@keyframes stale-pulse { 0%,100%{opacity:1} 50%{opacity:.6} }

/* Carte zones en mode données obsolètes : prix et bandes grisés */
#zones-card.is-stale-data .zone-card,
#zones-card.is-stale-data #price-ladder,
#zones-card.is-stale-data #zones-current { filter: grayscale(.55) opacity(.65); }
#zones-card.is-stale-data #zones-reco {
  background: rgba(232,77,109,.08);
  border-color: rgba(232,77,109,.30);
}

/* ── Header ─────────────────────────────────────────────────────────── */
.site-header{
  position: fixed; top: 0; left: 0; right: 0;
  height: var(--header-h);
  background: linear-gradient(180deg, rgba(1,6,13,.85), rgba(1,6,13,.60));
  backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(0,226,255,.20);
  z-index: var(--z-header);
  /* Soft transition d'opacité du main pendant soft-nav */
  view-transition-name: site-header;
}
main { view-transition-name: page-main; transition: opacity .18s ease; }
.site-header-inner{
  height: 100%;
  max-width: 1400px; margin: 0 auto;
  padding: 0 var(--s-6);
  display: flex; align-items: center; gap: var(--s-5);
}
.site-header-spacer { height: var(--header-h); }

.brand{ display: inline-flex; align-items: center; gap: var(--s-3); }
.brand-mark{
  width: 40px; height: 40px;
  border-radius: var(--radius-md);
  display: grid; place-items: center;
  background: radial-gradient(circle at 30% 30%, #00e2ff 0%, #1e7fb8 60%, #082a48 100%);
  box-shadow: 0 0 20px rgba(0,226,255,.40), inset 0 1px 0 rgba(255,255,255,.18);
  font-size: 22px; line-height: 1;
  animation: whale-bob 4.5s ease-in-out infinite;
}
@keyframes whale-bob {
  0%,100% { transform: translateY(0) rotate(-2deg); }
  50%     { transform: translateY(-2px) rotate(2deg); }
}
.brand-text { display: flex; flex-direction: column; line-height: 1.1; }
.brand-name{
  font-size: 17px;
  font-weight: 800;
  color: #fff;
  letter-spacing: .04em;
  background: linear-gradient(90deg, var(--aqua), var(--bio));
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent;
}
.brand-sub{
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  color: var(--muted);
  letter-spacing: .12em;
  text-transform: lowercase;
}

.live-chip{
  display: inline-flex; align-items: center; gap: 6px;
  padding: 5px 12px;
  border-radius: 999px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px; font-weight: 700;
  background: rgba(94,255,158,.10);
  color: var(--bio);
  border: 1px solid rgba(94,255,158,.30);
  letter-spacing: .04em;
}
.live-chip::before{
  content: ''; width: 6px; height: 6px; border-radius: 50%;
  background: var(--bio);
  box-shadow: 0 0 8px var(--bio);
  animation: live-pulse 1.6s ease-in-out infinite;
}
.live-dot{
  display: inline-block; width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--bio);
  box-shadow: 0 0 0 0 rgba(94,255,158,.65);
  animation: live-pulse 1.8s ease-in-out infinite;
  vertical-align: middle;
}
@keyframes live-pulse {
  0%,100% { box-shadow: 0 0 0 0 rgba(94,255,158,.6); }
  50%     { box-shadow: 0 0 0 8px rgba(94,255,158,0); }
}

.nav { display: flex; align-items: center; gap: var(--s-1); }
.nav-link{
  display: inline-flex; align-items: center; gap: var(--s-2);
  height: 36px; padding: 0 var(--s-4);
  border-radius: 999px;
  font-size: var(--fs-md);
  font-weight: 600;
  color: var(--muted);
  border: 1px solid transparent;
  transition: background var(--t-fast) var(--ease), color var(--t-fast) var(--ease), border-color var(--t-fast) var(--ease);
}
.nav-link:hover { color: var(--text); background: rgba(0,226,255,.07); }
.nav-link.is-active{
  color: var(--aqua);
  background: rgba(0,226,255,.12);
  border-color: rgba(0,226,255,.40);
  box-shadow: 0 0 0 1px rgba(0,226,255,.20), 0 4px 18px rgba(0,226,255,.16);
}
.nav-link svg { width: 14px; height: 14px; }

/* Pro link : highlight or/rose distinctif, partagé entre toutes les pages */
.nav-link--pro {
  position: relative;
  background: linear-gradient(90deg, rgba(255,198,87,.10), rgba(255,107,135,.08));
  border: 1px solid rgba(255,198,87,.28);
  color: var(--c-sc) !important;
}
.nav-link--pro:hover {
  background: linear-gradient(90deg, rgba(255,198,87,.18), rgba(255,107,135,.14));
}
.nav-link--pro.is-active {
  background: linear-gradient(90deg, rgba(255,198,87,.22), rgba(255,107,135,.16));
  border-color: rgba(255,198,87,.55);
  box-shadow: 0 0 0 1px rgba(255,198,87,.25), 0 4px 18px rgba(255,198,87,.18);
}

/* Pro sub-nav : sidebar à gauche sur desktop, horizontal sur mobile */
.pro-subnav {
  display: flex; gap: var(--s-2); flex-wrap: wrap;
  padding: var(--s-3);
  background: rgba(8,42,72,.40);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  margin-bottom: var(--s-5);
}
/* Desktop : sub-nav devient sidebar gauche sticky, le reste en colonne droite */
@media (min-width: 900px) {
  main:has(> .pro-subnav) {
    display: grid;
    grid-template-columns: 200px 1fr;
    column-gap: var(--s-5);
    align-items: start;
  }
  /* Par défaut tout va dans la colonne droite */
  main:has(> .pro-subnav) > * { grid-column: 2; }
  /* Sub-nav reste col 1, sticky, vertical */
  main:has(> .pro-subnav) > .pro-subnav {
    grid-column: 1; grid-row: 2 / 999;
    position: sticky; top: calc(var(--header-h) + var(--s-4));
    flex-direction: column; align-items: stretch;
    margin-bottom: 0;
  }
  /* Hero/titres span full width au-dessus du grid */
  main:has(> .pro-subnav) > .sig-hero,
  main:has(> .pro-subnav) > .gp-hero,
  main:has(> .pro-subnav) > .wl-hero,
  main:has(> .pro-subnav) > .bt-hero { grid-column: 1 / -1; }
  /* Links left-aligned en sidebar */
  main:has(> .pro-subnav) > .pro-subnav .pro-subnav-link {
    text-align: left; justify-content: flex-start;
  }
}
.pro-subnav-link {
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  font-size: var(--fs-sm);
  font-weight: 600;
  color: var(--muted);
  text-decoration: none;
  border: 1px solid transparent;
  transition: all .18s ease;
}
.pro-subnav-link:hover {
  color: var(--text);
  background: rgba(0,226,255,.06);
  border-color: rgba(0,226,255,.18);
}
.pro-subnav-link.is-active {
  color: var(--c-sc);
  background: linear-gradient(90deg, rgba(255,198,87,.14), rgba(255,107,135,.10));
  border-color: rgba(255,198,87,.40);
  box-shadow: 0 0 0 1px rgba(255,198,87,.18);
}

.header-prices{
  display: flex; align-items: center; gap: var(--s-3);
  font-family: 'JetBrains Mono', monospace;
  font-size: var(--fs-sm);
}
.header-prices .lbl { color: var(--muted); font-weight: 500; margin-right: 2px; }
.header-prices .val { color: var(--text); font-weight: 700; }
.header-prices .updated { color: var(--muted-2); font-size: var(--fs-xs); }

/* ── Buttons ────────────────────────────────────────────────────────── */
.btn{
  display: inline-flex; align-items: center; justify-content: center; gap: var(--s-2);
  height: 38px; padding: 0 var(--s-5);
  border-radius: 999px;
  font-size: var(--fs-md); font-weight: 700;
  white-space: nowrap;
  transition: filter var(--t-fast) var(--ease), box-shadow var(--t-fast) var(--ease), transform var(--t-fast) var(--ease);
}
.btn[disabled] { opacity: .5; cursor: not-allowed; }
.btn svg { width: 14px; height: 14px; }

.btn-primary{
  background: linear-gradient(135deg, var(--aqua), var(--bio));
  color: #01060d;
  box-shadow: 0 0 22px rgba(0,226,255,.32), inset 0 1px 0 rgba(255,255,255,.22);
  border: none;
}
.btn-primary:hover:not([disabled]) { filter: brightness(1.08) saturate(1.05); }
.btn-primary:active:not([disabled]) { transform: translateY(1px); }

.btn-ghost{
  background: rgba(0,226,255,.06);
  border: 1px solid rgba(0,226,255,.25);
  color: var(--text-soft);
}
.btn-ghost:hover:not([disabled]){
  background: rgba(0,226,255,.14);
  border-color: rgba(0,226,255,.50);
  color: var(--text);
}

.btn-sm { height: 30px; padding: 0 var(--s-3); font-size: var(--fs-xs); }
.btn-lg { height: 44px; padding: 0 var(--s-6); font-size: var(--fs-md); }

.icon-btn{
  display: inline-flex; align-items: center; justify-content: center;
  width: 30px; height: 30px;
  border-radius: 8px;
  color: var(--muted);
  background: transparent; border: 1px solid transparent;
  transition: background var(--t-fast) var(--ease), color var(--t-fast) var(--ease);
}
.icon-btn:hover { background: rgba(0,226,255,.10); color: var(--aqua); }
.icon-btn svg { width: 14px; height: 14px; }

/* ── Cards ──────────────────────────────────────────────────────────── */
.card{
  background: linear-gradient(180deg, rgba(8,42,72,.65), rgba(3,22,42,.40));
  border: 1px solid rgba(255,255,255,.06);
  border-radius: var(--radius-xl);
  backdrop-filter: blur(6px);
  position: relative;
}
.card::before{
  content: ''; position: absolute; inset: -1px;
  border-radius: var(--radius-xl);
  padding: 1px;
  background: linear-gradient(135deg, rgba(0,226,255,.30) 0%, transparent 50%, rgba(94,255,158,.15) 100%);
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor; mask-composite: exclude;
  pointer-events: none; opacity: .65;
}
.card-pad     { padding: var(--s-6); }
.card-pad-lg  { padding: var(--s-7); }

.card-header{
  display: flex; align-items: center; justify-content: space-between;
  gap: var(--s-3); padding: var(--s-4) var(--s-6);
  border-bottom: 1px solid rgba(255,255,255,.06);
}
.card-title{
  font-size: var(--fs-lg); font-weight: 700; color: #fff;
  display: inline-flex; align-items: center; gap: var(--s-2);
  margin: 0;
}
.card-title > svg { width: 18px; height: 18px; flex-shrink: 0; color: var(--aqua); }
.card-title .emoji { font-size: 20px; line-height: 1; flex-shrink: 0; }
.card-meta{
  font-family: 'JetBrains Mono', monospace;
  font-size: var(--fs-xs); color: var(--muted);
}

/* ── Hero strip (signature across pages) ────────────────────────────── */
.hero-strip{
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center; gap: var(--s-7);
  padding: var(--s-6) var(--s-7);
  margin-bottom: var(--s-7);
  background: linear-gradient(135deg, rgba(8,42,72,.65), rgba(14,62,100,.35));
  border: 1px solid rgba(0,226,255,.22);
  border-radius: var(--radius-xl);
  position: relative; overflow: hidden;
  backdrop-filter: blur(8px);
}
.hero-strip::before{
  content: ''; position: absolute; inset: -1px;
  border-radius: var(--radius-xl);
  padding: 1px;
  background: linear-gradient(135deg, rgba(0,226,255,.55), transparent 50%, rgba(94,255,158,.30));
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor; mask-composite: exclude;
  pointer-events: none;
}
.hero-strip-title{
  font-size: clamp(22px, 3.2vw, 30px);
  font-weight: 800; color: #fff;
  line-height: 1.1; letter-spacing: -.015em;
  margin: 0 0 var(--s-2);
}
.hero-strip-title .accent{
  background: linear-gradient(90deg, var(--aqua), var(--bio));
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent;
}
.hero-strip-sub{
  font-size: var(--fs-lg);
  color: var(--muted);
  margin: 0;
}
.hero-strip-whale{
  font-size: 80px; line-height: 1;
  filter: drop-shadow(0 0 20px rgba(0,226,255,.55));
  animation: whale-float 5s ease-in-out infinite;
}
@keyframes whale-float {
  0%,100% { transform: translateY(0) rotate(-3deg); }
  50%     { transform: translateY(-5px) rotate(3deg); }
}
@media (max-width: 720px){
  .hero-strip{ grid-template-columns: 1fr; padding: var(--s-5); gap: var(--s-4); }
  .hero-strip-whale{ font-size: 56px; text-align: right; }
}

/* ── Stat (KPI) cards ───────────────────────────────────────────────── */
.stat{
  position: relative; padding: var(--s-6);
  border-radius: var(--radius-lg);
  background: linear-gradient(180deg, rgba(8,42,72,.60), rgba(3,22,42,.30));
  border: 1px solid rgba(255,255,255,.05);
  backdrop-filter: blur(6px);
  overflow: hidden;
  transition: transform var(--t-med) var(--ease), box-shadow var(--t-med) var(--ease);
}
.stat::before{
  content: ''; position: absolute; inset: -1px;
  border-radius: var(--radius-lg);
  padding: 1px;
  background: linear-gradient(135deg, var(--c-accent, var(--aqua)) 0%, transparent 70%);
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor; mask-composite: exclude;
  pointer-events: none; opacity: .55;
}
.stat::after{
  content: ''; position: absolute;
  top: -50%; right: -30%;
  width: 220px; height: 220px;
  border-radius: 50%;
  background: radial-gradient(circle, color-mix(in srgb, var(--c-accent, var(--aqua)) 18%, transparent) 0%, transparent 70%);
  pointer-events: none;
}
.stat:hover{
  transform: translateY(-2px);
  box-shadow: 0 12px 36px color-mix(in srgb, var(--c-accent, var(--aqua)) 22%, transparent);
}
.stat-head{
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: var(--s-3);
  position: relative;
}
.stat-label{
  font-size: 11px; font-weight: 700;
  letter-spacing: .14em; text-transform: uppercase;
  color: var(--muted);
  display: inline-flex; align-items: center; gap: var(--s-2);
}
.stat-emoji{
  font-size: 28px; line-height: 1;
  filter: drop-shadow(0 0 10px color-mix(in srgb, var(--c-accent, var(--aqua)) 50%, transparent));
}
.stat-value{
  font-size: var(--fs-3xl);
  font-weight: 800;
  letter-spacing: -.02em; line-height: 1;
  color: #fff;
  font-feature-settings: "tnum";
  background: linear-gradient(180deg, #fff 0%, var(--c-accent, var(--aqua)) 100%);
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent;
  text-shadow: 0 0 28px color-mix(in srgb, var(--c-accent, var(--aqua)) 30%, transparent);
}
.stat-sub{
  font-size: var(--fs-sm); color: var(--muted);
  margin-top: var(--s-3);
  display: flex; align-items: center; gap: var(--s-2); flex-wrap: wrap;
}
.stat-pill{
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px; font-weight: 700;
  padding: 2px 8px; border-radius: 5px;
  background: color-mix(in srgb, var(--c-accent, var(--aqua)) 14%, transparent);
  color: var(--c-accent, var(--aqua));
  border: 1px solid color-mix(in srgb, var(--c-accent, var(--aqua)) 30%, transparent);
}

.stat--green   { --c-accent: var(--bio); }
.stat--blue    { --c-accent: var(--indigo); }
.stat--red     { --c-accent: var(--coral); }
.stat--yellow  { --c-accent: var(--gold); }
.stat--purple  { --c-accent: var(--orchid); }
.stat--cyan    { --c-accent: var(--aqua); }

.spark-overlay{
  position: absolute; left: 0; right: 0; bottom: 0;
  width: 100%; height: 42px;
  opacity: .45;
  pointer-events: none;
}

/* ── Tags / badges / chips ──────────────────────────────────────────── */
.tag{
  display: inline-flex; align-items: center;
  padding: 2px 8px;
  border-radius: 5px;
  font-size: var(--fs-xs);
  font-weight: 600;
  white-space: nowrap;
  border: 1px solid;
}
.tag--mev    { background: rgba(255,122,156,.10); color: #ffadc1; border-color: rgba(255,122,156,.30); }
.tag--dex    { background: rgba(122,169,255,.10); color: #adc8ff; border-color: rgba(122,169,255,.30); }
.tag--mm     { background: rgba(196,125,255,.10); color: #dab5ff; border-color: rgba(196,125,255,.30); }
.tag--sc     { background: rgba(255,217,112,.10); color: #ffe39a; border-color: rgba(255,217,112,.30); }
.tag--other  { background: rgba(123,170,207,.10); color: #b8d3e4; border-color: rgba(123,170,207,.25); }
.tag--unk    { background: rgba(78,122,158,.18); color: #98b6ce; border-color: rgba(78,122,158,.30); }
/* P1.1 — distinguer infrastructure (CEX/Bridge/Router) du vrai alpha (EOA) */
.tag--router { background: rgba(122,169,255,.10); color: #adc8ff; border-color: rgba(122,169,255,.30); }
.tag--bridge { background: rgba(255,176,80,.10);  color: #ffd6a0; border-color: rgba(255,176,80,.30);  }
.tag--cex    { background: rgba(255,160,80,.12);  color: #ffd3a8; border-color: rgba(255,160,80,.32);  }
.tag--eoa    { background: rgba(46,212,168,.10);  color: #9affc1; border-color: rgba(46,212,168,.30);  }
.tag--infra  { opacity: .92; }

.badge{
  display: inline-block;
  padding: 1px 6px;
  border-radius: 4px;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: .04em;
  font-family: 'JetBrains Mono', monospace;
  border: 1px solid;
}
.badge--sc  { background: rgba(0,226,255,.10); color: #80edff; border-color: rgba(0,226,255,.30); }
.badge--eoa { background: rgba(94,255,158,.10); color: #9affc1; border-color: rgba(94,255,158,.30); }

/* Tier badges — WHALE EMOJIS RESTORED */
.tier{
  display: inline-flex; align-items: center; gap: 4px;
  padding: 2px 8px;
  border-radius: 5px;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: .03em;
  white-space: nowrap;
  border: 1px solid;
}
.tier .emoji{ font-size: 12px; line-height: 1; }
.tier--mega    { background: rgba(196,125,255,.14); color: #dab5ff; border-color: rgba(196,125,255,.35); box-shadow: 0 0 12px rgba(196,125,255,.15); }
.tier--whale   { background: rgba(0,226,255,.12);  color: #80edff; border-color: rgba(0,226,255,.30);  box-shadow: 0 0 12px rgba(0,226,255,.15); }
.tier--dolphin { background: rgba(94,255,158,.10); color: #9affc1; border-color: rgba(94,255,158,.28); }
.tier--fish    { background: rgba(255,217,112,.10); color: #ffe39a; border-color: rgba(255,217,112,.28); }
.tier--shrimp  { background: rgba(123,170,207,.10); color: #b8d3e4; border-color: rgba(123,170,207,.25); }

.chip{
  display: inline-flex; align-items: center; gap: var(--s-2);
  height: 30px; padding: 0 var(--s-3);
  border-radius: 999px;
  font-size: var(--fs-xs);
  font-weight: 600;
  color: var(--text-soft);
  background: rgba(0,226,255,.04);
  border: 1px solid rgba(0,226,255,.18);
  transition: background var(--t-fast) var(--ease), border-color var(--t-fast) var(--ease), color var(--t-fast) var(--ease);
}
.chip:hover {
  background: rgba(0,226,255,.10);
  border-color: rgba(0,226,255,.35);
  color: var(--text);
}
.chip.is-active{
  background: rgba(0,226,255,.16);
  border-color: rgba(0,226,255,.50);
  color: var(--aqua);
  box-shadow: 0 0 0 1px rgba(0,226,255,.20);
}

/* ── Table ──────────────────────────────────────────────────────────── */
.tbl{
  width: 100%;
  font-size: var(--fs-sm);
  border-collapse: collapse;
}
.tbl th{
  text-align: left;
  padding: var(--s-3) var(--s-4);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--muted);
  border-bottom: 1px solid rgba(255,255,255,.08);
  background: rgba(14,62,100,.30);
  position: sticky; top: 0;
}
.tbl th.sortable { cursor: pointer; user-select: none; }
.tbl th.sortable:hover { color: var(--aqua); }
.tbl td{
  padding: var(--s-3) var(--s-4);
  border-bottom: 1px solid rgba(255,255,255,.04);
  vertical-align: middle;
  color: var(--text-soft);
}
.tbl tr:last-child td { border-bottom: none; }
.tbl-row { transition: background var(--t-fast) var(--ease); cursor: pointer; }
.tbl-row:hover{
  background: rgba(0,226,255,.06);
  box-shadow: inset 3px 0 0 var(--aqua);
}

.volbar{
  display: inline-block;
  width: 64px; height: 4px;
  border-radius: 2px;
  background: rgba(255,255,255,.08);
  vertical-align: middle;
  overflow: hidden;
}
.volbar-fill{
  height: 100%; border-radius: 2px;
  background: linear-gradient(90deg, var(--bio), var(--aqua));
}

/* ── Inputs ─────────────────────────────────────────────────────────── */
.input{
  height: 34px;
  padding: 0 var(--s-3);
  font-family: 'JetBrains Mono', monospace;
  font-size: var(--fs-sm);
  color: var(--text);
  background: rgba(8,42,72,.40);
  border: 1px solid rgba(0,226,255,.18);
  border-radius: 8px;
  transition: border-color var(--t-fast) var(--ease), background var(--t-fast) var(--ease);
}
.input::placeholder { color: var(--muted-2); }
.input:focus{
  outline: none;
  border-color: var(--aqua);
  background: rgba(8,42,72,.65);
  box-shadow: 0 0 0 2px rgba(0,226,255,.18);
}

.select{
  height: 30px;
  padding: 0 var(--s-3);
  font-family: 'JetBrains Mono', monospace;
  font-size: var(--fs-xs);
  color: var(--text-soft);
  background: rgba(8,42,72,.40);
  border: 1px solid rgba(0,226,255,.18);
  border-radius: 6px;
}
.select:focus { outline: none; border-color: var(--aqua); }

/* ── Modal ──────────────────────────────────────────────────────────── */
.modal-overlay{
  position: fixed; inset: 0;
  background: rgba(1,6,13,.78);
  backdrop-filter: blur(6px);
  display: grid; place-items: center;
  padding: var(--s-5);
  z-index: var(--z-modal);
}
.modal-overlay.is-hidden { display: none; }
.modal-panel{
  width: 100%; max-width: 520px;
  max-height: 88vh; overflow-y: auto;
  background: linear-gradient(180deg, rgba(8,42,72,.95), rgba(3,22,42,.95));
  border: 1px solid rgba(0,226,255,.30);
  border-radius: var(--radius-xl);
  box-shadow: 0 24px 60px rgba(0,0,0,.65), 0 0 24px rgba(0,226,255,.20);
}

/* ── Toast ──────────────────────────────────────────────────────────── */
.toast-stack{
  position: fixed; bottom: var(--s-6); left: 50%;
  transform: translateX(-50%);
  display: flex; flex-direction: column; gap: var(--s-2);
  align-items: center;
  z-index: var(--z-toast); pointer-events: none;
}
.toast{
  display: inline-flex; align-items: center; gap: var(--s-2);
  padding: var(--s-2) var(--s-4);
  font-size: var(--fs-sm); font-weight: 500;
  background: linear-gradient(180deg, rgba(8,42,72,.96), rgba(3,22,42,.96));
  border: 1px solid rgba(0,226,255,.30);
  color: var(--text);
  border-radius: 999px;
  box-shadow: 0 8px 24px rgba(0,0,0,.50), 0 0 18px rgba(0,226,255,.12);
  backdrop-filter: blur(12px);
  animation: toast-in var(--t-slow) var(--ease), toast-out var(--t-slow) var(--ease) 2.4s forwards;
}
.toast--success { border-color: rgba(94,255,158,.40); color: var(--bio); box-shadow: 0 8px 24px rgba(0,0,0,.50), 0 0 18px rgba(94,255,158,.20); }
.toast--error   { border-color: rgba(255,122,156,.40); color: var(--coral); box-shadow: 0 8px 24px rgba(0,0,0,.50), 0 0 18px rgba(255,122,156,.20); }
.toast--whale   { border-color: rgba(0,226,255,.50); color: var(--aqua); box-shadow: 0 8px 24px rgba(0,0,0,.50), 0 0 24px rgba(0,226,255,.30); }
@keyframes toast-in  { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: none; } }
@keyframes toast-out { from { opacity: 1; transform: none; } to { opacity: 0; transform: translateY(-6px); } }

/* ── Back-to-top ────────────────────────────────────────────────────── */
.back-top{
  position: fixed; bottom: var(--s-6); right: var(--s-6);
  width: 42px; height: 42px;
  border-radius: 50%;
  background: linear-gradient(135deg, rgba(0,226,255,.20), rgba(94,255,158,.10));
  border: 1px solid rgba(0,226,255,.40);
  color: var(--aqua);
  display: grid; place-items: center;
  opacity: 0; transform: translateY(8px);
  transition: opacity var(--t-med) var(--ease), transform var(--t-med) var(--ease), background var(--t-fast) var(--ease);
  z-index: var(--z-nav);
  backdrop-filter: blur(8px);
  box-shadow: 0 8px 20px rgba(0,226,255,.25);
}
.back-top:hover { background: linear-gradient(135deg, rgba(0,226,255,.35), rgba(94,255,158,.20)); }
.back-top.is-visible { opacity: 1; transform: translateY(0); }
.back-top svg { width: 16px; height: 16px; }

/* ── Section card (guide/bot) ───────────────────────────────────────── */
.section-card{
  background: linear-gradient(180deg, rgba(8,42,72,.65), rgba(3,22,42,.40));
  border: 1px solid rgba(255,255,255,.06);
  border-radius: var(--radius-xl);
  overflow: hidden;
  backdrop-filter: blur(6px);
  position: relative;
}
.section-card::before{
  content: ''; position: absolute; inset: -1px;
  border-radius: var(--radius-xl);
  padding: 1px;
  background: linear-gradient(135deg, var(--c-accent, var(--aqua)) 0%, transparent 70%);
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor; mask-composite: exclude;
  pointer-events: none; opacity: .55;
}
.section-card-header{
  display: flex; align-items: flex-start; gap: var(--s-4);
  padding: var(--s-6) var(--s-7);
  border-bottom: 1px solid rgba(255,255,255,.06);
  position: relative;
}
.section-num{
  font-family: 'JetBrains Mono', monospace;
  font-size: var(--fs-xs); font-weight: 700;
  letter-spacing: .14em;
  color: var(--c-accent, var(--aqua));
  padding: 3px 9px;
  background: color-mix(in srgb, var(--c-accent, var(--aqua)) 10%, transparent);
  border: 1px solid color-mix(in srgb, var(--c-accent, var(--aqua)) 28%, transparent);
  border-radius: 6px;
  white-space: nowrap; margin-top: 2px;
}
.section-icon{
  display: grid; place-items: center;
  width: 44px; height: 44px;
  border-radius: 12px;
  background: color-mix(in srgb, var(--c-accent, var(--aqua)) 12%, transparent);
  border: 1px solid color-mix(in srgb, var(--c-accent, var(--aqua)) 30%, transparent);
  color: var(--c-accent, var(--aqua));
  flex-shrink: 0;
  font-size: 22px;
  line-height: 1;
  box-shadow: 0 0 18px color-mix(in srgb, var(--c-accent, var(--aqua)) 20%, transparent);
}
.section-icon svg { width: 22px; height: 22px; }
.section-title-block { flex: 1; min-width: 0; }
.section-title{
  font-size: 18px; font-weight: 700; color: #fff;
  line-height: 1.25;
  margin: 0 0 var(--s-2) 0;
}
.section-subtitle{
  font-size: var(--fs-sm); color: var(--muted);
  line-height: var(--lh-normal);
}
.section-tags{
  display: flex; flex-wrap: wrap; gap: var(--s-2);
  margin-top: var(--s-3);
}
.section-tag{
  font-size: 10px; font-weight: 600;
  letter-spacing: .04em;
  padding: 2px 8px;
  border-radius: 5px;
  background: color-mix(in srgb, var(--c-accent, var(--aqua)) 10%, transparent);
  color: var(--c-accent, var(--aqua));
  border: 1px solid color-mix(in srgb, var(--c-accent, var(--aqua)) 24%, transparent);
}
.section-card-body { padding: var(--s-6) var(--s-7); }

.section--blue    { --c-accent: var(--indigo); }
.section--green   { --c-accent: var(--bio); }
.section--red     { --c-accent: var(--coral); }
.section--purple  { --c-accent: var(--orchid); }
.section--yellow  { --c-accent: var(--gold); }
.section--cyan    { --c-accent: var(--aqua); }
.section--neutral { --c-accent: var(--muted); }

/* Info card */
.info-card{
  background: rgba(3,22,42,.40);
  border: 1px solid rgba(255,255,255,.06);
  border-radius: var(--radius-md);
  padding: var(--s-5);
}
.info-card h4{
  font-size: var(--fs-xs); font-weight: 700;
  letter-spacing: .10em; text-transform: uppercase;
  color: var(--c-accent, var(--aqua));
  margin: 0 0 var(--s-3);
  display: inline-flex; align-items: center; gap: var(--s-2);
}
.info-card h4 svg { width: 13px; height: 13px; }
.info-card p, .info-card li{
  font-size: var(--fs-md);
  color: var(--text-soft);
  line-height: var(--lh-loose);
}
.info-card ul{
  margin: 0; padding: 0;
  list-style: none;
  display: flex; flex-direction: column;
  gap: var(--s-2);
}
.info-card li{
  padding-left: var(--s-4);
  position: relative;
}
.info-card li::before{
  content: '›';
  position: absolute; left: 0; top: 0;
  color: var(--c-accent, var(--aqua));
  font-weight: 700;
}

/* Alert */
.alert{
  display: flex; align-items: flex-start; gap: var(--s-3);
  padding: var(--s-3) var(--s-4);
  border-radius: var(--radius-md);
  font-size: var(--fs-md);
  line-height: var(--lh-normal);
  background: color-mix(in srgb, var(--c-accent, var(--gold)) 6%, transparent);
  border: 1px solid color-mix(in srgb, var(--c-accent, var(--gold)) 28%, transparent);
  color: var(--text-soft);
  border-left-width: 3px;
}
.alert > svg{ width: 16px; height: 16px; color: var(--c-accent, var(--gold)); flex-shrink: 0; margin-top: 2px; }
.alert strong { color: #fff; font-weight: 600; }
.alert--info    { --c-accent: var(--indigo); }
.alert--success { --c-accent: var(--bio); }
.alert--danger  { --c-accent: var(--coral); }
.alert--warn    { --c-accent: var(--gold); }

/* Code block */
.code-block{
  background: rgba(1,6,13,.70);
  border: 1px solid rgba(0,226,255,.16);
  border-radius: var(--radius-md);
  padding: var(--s-4) var(--s-5);
  margin-top: var(--s-3);
  overflow-x: auto;
}
.code-block pre{
  margin: 0;
  font-family: 'JetBrains Mono', monospace;
  font-size: var(--fs-sm);
  line-height: 1.7;
  color: var(--text-soft);
}
.code-block .kw { color: var(--aqua); }
.code-block .st { color: var(--gold); }
.code-block .cm { color: var(--muted-2); }

/* Checklist item */
.check-list { display: flex; flex-direction: column; gap: var(--s-2); }
.check-item{
  display: flex; align-items: flex-start; gap: var(--s-3);
  padding: var(--s-3) var(--s-4);
  background: rgba(3,22,42,.50);
  border: 1px solid rgba(255,255,255,.06);
  border-radius: var(--radius-md);
}
.check-dot{
  width: 22px; height: 22px;
  border-radius: 50%;
  display: grid; place-items: center;
  flex-shrink: 0;
  font-size: 10px; font-weight: 800;
  background: color-mix(in srgb, var(--c-accent, var(--aqua)) 12%, transparent);
  color: var(--c-accent, var(--aqua));
  border: 1px solid color-mix(in srgb, var(--c-accent, var(--aqua)) 35%, transparent);
}
.check-text{
  font-size: var(--fs-md);
  color: var(--text-soft);
  line-height: var(--lh-normal);
  flex: 1;
}
.check-text strong { color: #fff; font-weight: 600; }

/* Metric grid */
.metric-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--s-3); }
@media (max-width: 600px) { .metric-grid { grid-template-columns: 1fr 1fr; } }
.metric-box{
  background: rgba(3,22,42,.50);
  border: 1px solid rgba(255,255,255,.06);
  border-radius: var(--radius-md);
  padding: var(--s-4);
  text-align: center;
}
.metric-box .m-val{
  font-family: 'JetBrains Mono', monospace;
  font-size: 22px; font-weight: 800;
  color: var(--c-accent, var(--aqua));
  line-height: 1.1;
  margin-bottom: var(--s-1);
}
.metric-box .m-lbl{
  font-size: 11px;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: .08em;
  font-weight: 600;
}

/* Strat row */
.strat-row{
  display: flex; align-items: center; gap: var(--s-3);
  padding: var(--s-3) var(--s-4);
  background: rgba(3,22,42,.50);
  border: 1px solid rgba(255,255,255,.06);
  border-radius: var(--radius-md);
  margin-bottom: var(--s-2);
}
.strat-icon{
  display: grid; place-items: center;
  width: 36px; height: 36px;
  border-radius: 10px;
  background: color-mix(in srgb, var(--c-accent, var(--aqua)) 12%, transparent);
  color: var(--c-accent, var(--aqua));
  flex-shrink: 0;
  font-size: 18px;
}
.strat-icon svg { width: 18px; height: 18px; }
.strat-info { flex: 1; min-width: 0; }
.strat-name { font-size: var(--fs-md); font-weight: 700; color: #fff; margin-bottom: 2px; }
.strat-desc { font-size: var(--fs-sm); color: var(--muted); line-height: var(--lh-normal); }
.strat-badge{
  font-size: 10px; font-weight: 700;
  padding: 3px 8px;
  border-radius: 999px;
  flex-shrink: 0;
  background: color-mix(in srgb, var(--c-accent, var(--aqua)) 14%, transparent);
  color: var(--c-accent, var(--aqua));
  border: 1px solid color-mix(in srgb, var(--c-accent, var(--aqua)) 30%, transparent);
}

/* Tool card */
.tool-card{
  background: rgba(3,22,42,.50);
  border: 1px solid rgba(255,255,255,.06);
  border-radius: var(--radius-md);
  padding: var(--s-5);
  display: flex; flex-direction: column; gap: var(--s-2);
  transition: border-color var(--t-fast) var(--ease), background var(--t-fast) var(--ease);
}
.tool-card:hover{ border-color: var(--c-accent, var(--aqua)); background: rgba(8,42,72,.55); }
.tool-name { font-size: var(--fs-lg); font-weight: 700; color: #fff; }
.tool-tag{
  font-size: 10px; font-weight: 700;
  padding: 3px 9px;
  border-radius: 999px;
  background: color-mix(in srgb, var(--c-accent, var(--aqua)) 12%, transparent);
  color: var(--c-accent, var(--aqua));
  border: 1px solid color-mix(in srgb, var(--c-accent, var(--aqua)) 28%, transparent);
  align-self: flex-start;
  letter-spacing: .04em;
}
.tool-desc { font-size: var(--fs-sm); color: var(--muted); line-height: var(--lh-normal); }
.tool-pros { display: flex; flex-direction: column; gap: var(--s-1); margin-top: var(--s-2); }
.tool-pro{
  font-size: var(--fs-sm);
  color: var(--text-soft);
  padding-left: var(--s-4);
  position: relative;
}
.tool-pro::before{
  content: '✓';
  position: absolute; left: 0; top: 0;
  color: var(--bio); font-weight: 800;
}

/* Key-value row */
.kv-row{
  display: flex; align-items: center; justify-content: space-between;
  padding: var(--s-3) var(--s-4);
  border-radius: 8px;
  margin-bottom: var(--s-1);
  background: rgba(3,22,42,.50);
  border: 1px solid rgba(255,255,255,.06);
}
.kv-row .k { font-size: var(--fs-sm); color: var(--muted); }
.kv-row .v{
  font-size: var(--fs-sm); font-weight: 700;
  color: var(--text);
  font-family: 'JetBrains Mono', monospace;
}

.section-divider { height: 1px; background: rgba(255,255,255,.06); margin: var(--s-5) 0; }

/* ── Sticky page nav (guide/bot) ────────────────────────────────────── */
.sticky-nav{
  position: fixed; top: var(--header-h); left: 0; right: 0;
  background: rgba(1,6,13,.90);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(0,226,255,.15);
  padding: var(--s-2) var(--s-6);
  display: flex; flex-wrap: wrap; gap: var(--s-1);
  z-index: var(--z-nav);
  transform: translateY(-100%); opacity: 0;
  transition: transform var(--t-med) var(--ease), opacity var(--t-med) var(--ease);
}
.sticky-nav.is-visible { transform: translateY(0); opacity: 1; }
.sticky-nav-link{
  font-size: var(--fs-xs); font-weight: 600;
  padding: 5px var(--s-3);
  border-radius: 999px;
  color: var(--muted);
  border: 1px solid transparent;
  transition: color var(--t-fast) var(--ease), background var(--t-fast) var(--ease), border-color var(--t-fast) var(--ease);
}
.sticky-nav-link:hover { color: var(--text); background: rgba(0,226,255,.06); }
.sticky-nav-link.is-active{
  color: var(--c-accent, var(--aqua));
  background: color-mix(in srgb, var(--c-accent, var(--aqua)) 12%, transparent);
  border-color: color-mix(in srgb, var(--c-accent, var(--aqua)) 35%, transparent);
}

/* ── TOC pills under hero ───────────────────────────────────────────── */
.toc-pills { display: flex; flex-wrap: wrap; gap: var(--s-2); justify-content: center; }
.toc-pill{
  display: inline-flex; align-items: center; gap: var(--s-2);
  height: 30px; padding: 0 var(--s-3);
  border-radius: 999px;
  font-size: var(--fs-xs); font-weight: 700;
  color: var(--c-accent, var(--muted));
  border: 1px solid color-mix(in srgb, var(--c-accent, var(--border)) 35%, transparent);
  background: transparent;
  transition: background var(--t-fast) var(--ease);
}
.toc-pill:hover { background: color-mix(in srgb, var(--c-accent, var(--aqua)) 10%, transparent); }

/* ── Utilities ──────────────────────────────────────────────────────── */
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: var(--s-5); }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--s-4); }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--s-4); }
@media (max-width: 900px)  { .grid-3, .grid-4 { grid-template-columns: 1fr 1fr; } }
@media (max-width: 600px)  { .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; } }

.flex { display: flex; }
.flex-col { display: flex; flex-direction: column; }
.items-center { align-items: center; }
.items-start  { align-items: flex-start; }
.justify-between { justify-content: space-between; }
.gap-1 { gap: var(--s-1); } .gap-2 { gap: var(--s-2); } .gap-3 { gap: var(--s-3); }
.gap-4 { gap: var(--s-4); } .gap-5 { gap: var(--s-5); }
.flex-wrap { flex-wrap: wrap; }
.text-right { text-align: right; }
.text-center { text-align: center; }
.hidden { display: none !important; }
.relative { position: relative; }
.mt-3 { margin-top: var(--s-3); } .mt-4 { margin-top: var(--s-4); } .mt-5 { margin-top: var(--s-5); } .mt-6 { margin-top: var(--s-6); }
.mb-3 { margin-bottom: var(--s-3); } .mb-4 { margin-bottom: var(--s-4); } .mb-5 { margin-bottom: var(--s-5); } .mb-6 { margin-bottom: var(--s-6); }
.text-muted { color: var(--muted); }
.text-soft  { color: var(--text-soft); }
.text-cyan  { color: var(--aqua); }
.text-green { color: var(--bio); }
.text-red   { color: var(--coral); }
.text-yellow{ color: var(--gold); }
.text-purple{ color: var(--orchid); }
.text-blue  { color: var(--indigo); }
.fs-xs { font-size: var(--fs-xs); } .fs-sm { font-size: var(--fs-sm); }
.font-mono { font-family: 'JetBrains Mono', monospace; }
.font-bold { font-weight: 700; } .font-semibold { font-weight: 600; }
.uppercase { text-transform: uppercase; }
.tracking-wide { letter-spacing: .08em; }

/* Fade-up (page transitions) */
.fade-up { opacity: 0; transform: translateY(14px); transition: opacity .45s var(--ease), transform .45s var(--ease); }
.fade-up.is-visible { opacity: 1; transform: translateY(0); }

.spin { animation: spin .9s linear infinite; transform-origin: center; }
@keyframes spin { to { transform: rotate(360deg); } }

/* ── Footer ─────────────────────────────────────────────────────────── */
.site-footer{
  border-top: 1px solid rgba(0,226,255,.15);
  padding: var(--s-7) var(--s-6);
  background: rgba(1,6,13,.50);
  margin-top: var(--s-9);
}
.site-footer-inner{
  max-width: 1400px; margin: 0 auto;
  display: flex; align-items: center; justify-content: space-between;
  gap: var(--s-5); flex-wrap: wrap;
}
.site-footer .nav-link { font-size: var(--fs-xs); height: 30px; padding: 0 var(--s-3); }
.site-footer-tag{
  font-family: 'JetBrains Mono', monospace;
  font-size: var(--fs-xs);
  color: var(--muted-2);
  letter-spacing: .04em;
}