/* ============================================================
   Pillole di LLM — design system
   Estetica: laboratorio dark / strumento di precisione
   ============================================================ */

:root {
  /* superfici */
  --ink-900: #070a11;
  --ink-850: #0a0e16;
  --ink-800: #0e131d;
  --ink-700: #141a26;
  --ink-600: #1b2331;
  --ink-500: #28323f;
  --line: #232c3a;
  --line-soft: #1a2230;

  /* testo */
  --fg: #e7ecf3;
  --fg-soft: #aab4c2;
  --fg-mute: #6f7c8d;

  /* accenti */
  --amber: #ffb454;
  --amber-deep: #f59427;
  --cyan: #46e3d0;
  --cyan-deep: #1fb9c7;
  --violet: #9d8cff;
  --rose: #ff7a93;
  --green: #8ee06a;

  /* attenzione q/k/v */
  --q: #ffb454;
  --k: #46e3d0;
  --v: #9d8cff;

  /* tipografia */
  --display: "Bricolage Grotesque", "Hanken Grotesk", sans-serif;
  --body: "Hanken Grotesk", system-ui, sans-serif;
  --mono: "JetBrains Mono", ui-monospace, monospace;

  --maxw: 1160px;
  --page-top: clamp(96px, 10vw, 124px);
  --radius: 14px;
  --radius-sm: 8px;

  --shadow: 0 18px 50px -20px rgba(0, 0, 0, 0.7);
  --glow-amber: 0 0 32px -6px rgba(255, 180, 84, 0.5);
  --glow-cyan: 0 0 32px -6px rgba(70, 227, 208, 0.45);
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }

html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.001ms !important; transition-duration: 0.001ms !important; }
}

body {
  margin: 0;
  background-color: var(--ink-900);
  background-image: radial-gradient(1200px 700px at 70% -10%, #11192a 0%, var(--ink-850) 45%, var(--ink-900) 100%);
  background-attachment: fixed;
  color: var(--fg);
  font-family: var(--body);
  font-size: 17px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* link nel testo e accessibilità ------------------------------ */
main a:not([class]) {
  color: var(--cyan); text-decoration: underline; text-decoration-color: rgba(70, 227, 208, 0.4);
  text-underline-offset: 3px; transition: color 0.15s, text-decoration-color 0.15s;
}
main a:not([class]):hover { color: var(--fg); text-decoration-color: var(--amber); }
:focus-visible { outline: 2px solid var(--cyan); outline-offset: 3px; }
.skip-link {
  position: fixed; top: 10px; left: 10px; z-index: 300; padding: 10px 16px; border-radius: 8px;
  background: var(--amber); color: var(--ink-900); font-weight: 600; text-decoration: none;
  transform: translateY(-160%); transition: transform 0.2s;
}
.skip-link:focus { transform: none; }
code { font-family: var(--mono); font-size: 0.92em; }
kbd {
  font-family: var(--mono); font-size: 0.82em; padding: 1px 6px; border-radius: 5px;
  border: 1px solid var(--line); border-bottom-width: 2px; background: var(--ink-700); color: var(--fg);
}

/* texture e griglia di sfondo --------------------------------- */
.grain {
  position: fixed; inset: 0; z-index: 1; pointer-events: none; opacity: 0.05;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='3'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  mix-blend-mode: overlay;
}
.bg-grid {
  position: fixed; inset: 0; z-index: 0; pointer-events: none;
  background-image:
    linear-gradient(rgba(70, 227, 208, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(70, 227, 208, 0.035) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(1000px 700px at 50% 0%, #000 0%, transparent 80%);
}

/* progress bar ------------------------------------------------ */
.scroll-progress {
  position: fixed; top: 0; left: 0; height: 3px; width: 0%;
  background: linear-gradient(90deg, var(--amber), var(--cyan));
  z-index: 100; box-shadow: var(--glow-amber);
  transition: width 0.1s linear;
}

/* ===================== NAV ===================== */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 90;
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px clamp(16px, 4vw, 40px);
  backdrop-filter: blur(14px);
  background: linear-gradient(180deg, rgba(7, 10, 17, 0.85), rgba(7, 10, 17, 0.4));
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s, background 0.3s;
}
.nav.is-scrolled { border-bottom-color: var(--line); background: rgba(7, 10, 17, 0.92); }
.nav__brand { display: flex; align-items: center; gap: 10px; text-decoration: none; color: var(--fg); }
.nav__logo {
  width: 26px; height: 26px; border-radius: 7px;
  background: conic-gradient(from 140deg, var(--amber), var(--cyan), var(--violet), var(--amber));
  display: grid; place-items: center; box-shadow: var(--glow-cyan);
}
.nav__logo-dot { width: 9px; height: 9px; border-radius: 50%; background: var(--ink-900); }
.nav__title { font-family: var(--display); font-weight: 700; font-size: 19px; letter-spacing: -0.02em; }
.nav__title-accent { color: var(--amber); }
.nav__links { display: flex; gap: 4px; margin-left: auto; }
.nav__links a {
  color: var(--fg-soft); text-decoration: none; font-size: 14px; font-weight: 500;
  padding: 7px 12px; border-radius: 999px; transition: color 0.2s, background 0.2s;
}
.nav__links a:hover, .nav__links a.is-active { color: var(--fg); background: var(--ink-700); }
.nav__menu-btn { display: none; background: none; border: 0; cursor: pointer; padding: 8px; gap: 5px; flex-direction: column; }
.nav__menu-btn span { display: block; width: 22px; height: 2px; background: var(--fg); border-radius: 2px; transition: 0.3s; }

.nav__menu-btn[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav__menu-btn[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav__menu-btn[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
@media (max-width: 1039px) { .nav__menu-btn { display: flex; margin-left: 4px; } }
@media (max-width: 720px) { .nav__links { display: none; } }

/* ===================== HERO ===================== */
.hero {
  position: relative; z-index: 2;
  min-height: 100svh; display: grid; place-items: center;
  padding: 120px clamp(16px, 4vw, 40px) 80px; text-align: center; overflow: hidden;
}
.hero__canvas { position: absolute; inset: 0; width: 100%; height: 100%; z-index: -1; opacity: 0.55; }
.hero__inner { max-width: 820px; }
.hero__eyebrow {
  font-family: var(--mono); font-size: 13px; letter-spacing: 0.28em; text-transform: uppercase;
  color: var(--cyan); margin: 0 0 24px;
  opacity: 0; animation: rise 0.8s 0.05s forwards;
}
.hero__title {
  font-family: var(--display); font-weight: 700; letter-spacing: -0.03em; line-height: 0.98;
  font-size: clamp(46px, 9vw, 104px); margin: 0 0 26px;
  opacity: 0; animation: rise 0.9s 0.12s forwards;
}
.hero__title-accent {
  background: linear-gradient(105deg, var(--amber), var(--rose) 60%, var(--violet));
  -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent;
  font-style: italic;
}
.hero__lead {
  font-size: clamp(17px, 2.2vw, 21px); color: var(--fg-soft); max-width: 640px; margin: 0 auto 38px;
  opacity: 0; animation: rise 0.9s 0.22s forwards;
}
.hero__lead strong { color: var(--fg); font-weight: 600; }
.hero__cta { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; opacity: 0; animation: rise 0.9s 0.32s forwards; }
.hero__meta {
  font-family: var(--mono); font-size: 12px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--fg-mute);
  margin: 26px 0 0; opacity: 0; animation: rise 0.9s 0.42s forwards;
}
.hero__scroll {
  margin-top: clamp(40px, 7vh, 96px);
  display: inline-flex; flex-direction: column; align-items: center; gap: 8px;
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.2em; text-transform: uppercase; color: var(--fg-mute);
  opacity: 0; animation: rise 1s 0.6s forwards;
}
.hero__scroll-line { width: 1px; height: 40px; background: linear-gradient(var(--cyan), transparent); animation: scrollPulse 1.8s infinite; }

@keyframes rise { from { opacity: 0; transform: translateY(22px); } to { opacity: 1; transform: none; } }
@keyframes scrollPulse { 0%, 100% { opacity: 0.3; transform: scaleY(0.6); transform-origin: top; } 50% { opacity: 1; transform: scaleY(1); } }

/* ===================== BOTTONI ===================== */
.btn {
  display: inline-flex; align-items: center; gap: 8px; cursor: pointer;
  font-family: var(--body); font-weight: 600; font-size: 15px;
  padding: 13px 24px; border-radius: 999px; text-decoration: none; border: 1px solid transparent;
  transition: transform 0.18s, box-shadow 0.25s, background 0.2s, border-color 0.2s; will-change: transform;
}
.btn:active { transform: translateY(1px) scale(0.99); }
.btn--primary { background: linear-gradient(100deg, var(--amber), var(--amber-deep)); color: #25180a; box-shadow: var(--glow-amber); }
.btn--primary:hover { box-shadow: 0 0 40px -4px rgba(255, 180, 84, 0.7); transform: translateY(-2px); }
.btn--ghost { background: var(--ink-700); color: var(--fg); border-color: var(--line); }
.btn--ghost:hover { background: var(--ink-600); border-color: var(--cyan-deep); transform: translateY(-2px); }
.btn--sm { font-size: 13px; padding: 8px 16px; }

/* ===================== BUY ME A COFFEE ===================== */
.coffee-btn {
  display: inline-flex; align-items: center; gap: 8px; flex-shrink: 0;
  font-family: var(--body); font-weight: 600; font-size: 13px; line-height: 1; white-space: nowrap;
  color: var(--amber); text-decoration: none;
  background: rgba(255, 180, 84, 0.08); border: 1px solid rgba(255, 180, 84, 0.35);
  padding: 8px 14px; border-radius: 999px;
  transition: color 0.2s, background 0.2s, border-color 0.2s, box-shadow 0.25s, transform 0.18s;
}
.coffee-btn:hover {
  color: var(--ink-900); background: linear-gradient(100deg, var(--amber), var(--amber-deep));
  border-color: transparent; box-shadow: var(--glow-amber); transform: translateY(-2px);
}
.coffee-btn__ico { flex-shrink: 0; }
.nav .coffee-btn { margin-left: 8px; }

.coffee-btn--solid {
  margin-top: 8px; font-size: 15px; padding: 12px 22px; color: var(--ink-900);
  background: linear-gradient(100deg, var(--amber), var(--amber-deep)); border-color: transparent; box-shadow: var(--glow-amber);
}
.coffee-btn--solid:hover { box-shadow: 0 0 40px -4px rgba(255, 180, 84, 0.7); transform: translateY(-2px); }

@media (max-width: 1180px) {
  .nav .coffee-btn { padding: 8px; }
  .nav .coffee-btn .coffee-btn__txt { display: none; }
}
@media (max-width: 720px) {
  .nav .coffee-btn { margin-left: auto; }
}

/* ===================== SEZIONI ===================== */
.section {
  position: relative; z-index: 2;
  padding: clamp(70px, 11vw, 140px) 0;
}
.section--feature::before {
  content: ""; position: absolute; inset: 40px -24px; z-index: -1; border-radius: 40px;
  background: radial-gradient(700px 400px at 30% 0%, rgba(70, 227, 208, 0.06), transparent 70%);
}
.section__head { max-width: 720px; margin-bottom: 48px; }
.section__num {
  font-family: var(--mono); font-size: 13px; color: var(--amber); letter-spacing: 0.2em;
  display: inline-block; padding-bottom: 6px; border-bottom: 1px solid var(--line); margin-bottom: 18px;
}
.section__title {
  font-family: var(--display); font-weight: 700; letter-spacing: -0.025em;
  font-size: clamp(30px, 5vw, 50px); line-height: 1.05; margin: 0 0 18px;
}
.section__sub { font-size: clamp(16px, 1.6vw, 19px); color: var(--fg-soft); margin: 0; }
.section__sub em { color: var(--cyan); font-style: normal; }

.h3 { font-family: var(--display); font-weight: 600; font-size: 21px; letter-spacing: -0.01em; margin: 0 0 12px; }

/* reveal on scroll */
.js [data-reveal] { opacity: 0; transform: translateY(30px); transition: opacity 0.7s, transform 0.7s; }
.js [data-reveal].is-visible { opacity: 1; transform: none; }

/* ===================== PANORAMICA / PIPELINE ===================== */
.pipeline { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 12px; margin-bottom: 30px; }
.pstep {
  position: relative; display: block; text-align: left; cursor: pointer; text-decoration: none;
  background: linear-gradient(180deg, var(--ink-700), var(--ink-800));
  border: 1px solid var(--line); border-radius: var(--radius); padding: 18px 16px;
  color: var(--fg); transition: transform 0.2s, border-color 0.2s, box-shadow 0.25s;
}
.pstep:hover { transform: translateY(-4px); border-color: var(--cyan-deep); box-shadow: var(--glow-cyan); }
.pstep__idx { font-family: var(--mono); font-size: 12px; color: var(--amber); }
.pstep__idx, .pstep__name, .pstep__desc { display: block; }
.pstep__name { font-family: var(--display); font-weight: 600; font-size: 17px; margin: 6px 0 4px; }
.pstep__desc { font-size: 13px; color: var(--fg-mute); line-height: 1.45; }
.pstep__arrow { position: absolute; right: -10px; top: 50%; transform: translateY(-50%); color: var(--line); z-index: 1; }
@media (max-width: 720px) { .pstep__arrow { display: none; } }

.callout, .note {
  border-radius: var(--radius); padding: 20px 22px; font-size: 16px; color: var(--fg-soft);
}
.callout { background: linear-gradient(100deg, rgba(255, 180, 84, 0.08), rgba(70, 227, 208, 0.05)); border: 1px solid var(--line); }
.callout strong, .note strong { color: var(--fg); }
.note { background: var(--ink-800); border: 1px solid var(--line-soft); margin-top: 28px; }
.note p { margin: 0 0 12px; } .note p:last-child { margin-bottom: 0; }
.note em { color: var(--cyan); font-style: normal; }

/* ===================== DEMO (contenitore generico) ===================== */
.demo {
  background: linear-gradient(180deg, var(--ink-800), var(--ink-850));
  border: 1px solid var(--line); border-radius: 18px; padding: clamp(18px, 3vw, 30px);
  box-shadow: var(--shadow);
}
.demo + .demo { margin-top: 22px; }
.demo--split { display: grid; grid-template-columns: 1fr 1fr; gap: 30px; align-items: center; }
@media (max-width: 820px) { .demo--split { grid-template-columns: 1fr; } }
.demo__controls { margin-bottom: 22px; }
.demo__controls--inline { display: flex; align-items: flex-end; gap: 22px; flex-wrap: wrap; margin-bottom: 22px; }
.demo__hint { font-size: 14px; color: var(--fg-mute); margin: 16px 0 0; line-height: 1.5; }
.demo__hint--center { text-align: center; }
.demo__hint strong { color: var(--fg-soft); }
.demo__chips { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 12px; }

.chip-btn {
  font-family: var(--mono); font-size: 12px; cursor: pointer;
  background: var(--ink-700); color: var(--fg-soft); border: 1px solid var(--line);
  padding: 6px 12px; border-radius: 999px; transition: 0.2s;
}
.chip-btn:hover { color: var(--fg); border-color: var(--amber); }
.chip-btn.is-active { color: var(--ink-900); background: linear-gradient(100deg, var(--amber), var(--amber-deep)); border-color: transparent; box-shadow: var(--glow-amber); }

/* form fields */
.field { display: block; }
.field__label { display: block; font-size: 13px; color: var(--fg-soft); margin-bottom: 8px; font-weight: 500; }
.field__label b { color: var(--amber); font-family: var(--mono); }
.field__input {
  width: 100%; background: var(--ink-900); color: var(--fg); border: 1px solid var(--line);
  border-radius: var(--radius-sm); padding: 12px 14px; font-family: var(--body); font-size: 16px; resize: vertical;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.field__input:focus { outline: none; border-color: var(--cyan-deep); box-shadow: var(--glow-cyan); }
.field--slider { min-width: 260px; flex: 1; }

input[type="range"] {
  -webkit-appearance: none; appearance: none; width: 100%; height: 5px; border-radius: 999px;
  background: linear-gradient(90deg, var(--amber), var(--cyan)); cursor: pointer; margin-top: 4px;
}
input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none; width: 20px; height: 20px; border-radius: 50%;
  background: var(--fg); border: 3px solid var(--ink-900); box-shadow: 0 2px 8px rgba(0,0,0,0.5);
}
input[type="range"]::-moz-range-thumb {
  width: 20px; height: 20px; border-radius: 50%; background: var(--fg); border: 3px solid var(--ink-900);
}

/* ===================== TOKENIZER ===================== */
.tok-stats { display: flex; gap: 20px; flex-wrap: wrap; margin-bottom: 16px; }
.tok-stat { font-size: 14px; color: var(--fg-mute); }
.tok-stat b { font-family: var(--mono); font-size: 22px; color: var(--fg); display: block; }
.tok-stat b.accent { color: var(--amber); }
.tok-tokens { display: flex; flex-wrap: wrap; gap: 6px; }
.token {
  position: relative; font-family: var(--mono); font-size: 15px;
  padding: 7px 10px 18px; border-radius: 7px; border: 1px solid var(--line);
  background: var(--ink-700); white-space: pre; transition: transform 0.15s;
  animation: pop 0.3s backwards;
}
.token:hover { transform: translateY(-2px); z-index: 2; }
.token__id { position: absolute; left: 0; right: 0; bottom: 3px; text-align: center; font-size: 9px; color: var(--fg-mute); }
.token--space { color: var(--fg-mute); }
@keyframes pop { from { opacity: 0; transform: scale(0.8); } to { opacity: 1; transform: none; } }

/* ===================== EMBEDDING ===================== */
.emb-vectors { display: flex; flex-direction: column; gap: 8px; }
.emb-row { display: grid; grid-template-columns: 110px 1fr; gap: 12px; align-items: center; }
.emb-row__label { font-family: var(--mono); font-size: 14px; color: var(--fg); text-align: right; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.emb-row__cells { display: flex; gap: 3px; }
.emb-cell { flex: 1; height: 26px; border-radius: 3px; cursor: crosshair; transition: transform 0.12s; }
.emb-cell:hover { transform: scaleY(1.25); }
.legend-neg { color: var(--violet); } .legend-pos { color: var(--amber); }

/* spazio semantico */
.semantic__map canvas { width: 100%; height: auto; border-radius: var(--radius-sm); background: var(--ink-900); border: 1px solid var(--line); }
.kw { font-family: var(--mono); font-size: 0.92em; color: var(--cyan); background: rgba(70,227,208,0.1); padding: 1px 6px; border-radius: 5px; }
.kw--hot { color: var(--amber); background: rgba(255,180,84,0.12); }
.equation {
  font-family: var(--mono); font-size: 18px; text-align: center; color: var(--fg); overflow-x: auto;
  background: var(--ink-900); border: 1px solid var(--line); border-radius: var(--radius-sm); padding: 16px; margin: 18px 0;
}
.equation--sm { font-size: 14px; padding: 12px; }

/* ===================== POSITIONAL ENCODING ===================== */
#posCanvas, #attCanvas, .semantic__map canvas { width: 100%; height: auto; display: block; border-radius: var(--radius-sm); background: var(--ink-900); border: 1px solid var(--line); }

/* ===================== ATTENTION ===================== */
.att-sentence { display: flex; flex-wrap: wrap; gap: 8px; justify-content: center; margin-bottom: 8px; }
.att-tok {
  font-family: var(--mono); font-size: 16px; padding: 9px 13px; border-radius: 9px; cursor: pointer;
  background: var(--ink-700); border: 1px solid var(--line); color: var(--fg-soft);
  transition: transform 0.15s, border-color 0.2s, color 0.2s, background 0.2s;
}
.att-tok:hover { transform: translateY(-2px); color: var(--fg); }
.att-tok.is-query { background: linear-gradient(100deg, var(--amber), var(--amber-deep)); color: #25180a; border-color: transparent; box-shadow: var(--glow-amber); }
.att-tok.is-key { border-color: var(--cyan-deep); color: var(--fg); }
.qkv-tag--sm { width: 20px; height: 20px; font-size: 11px; border-radius: 5px; margin-right: 2px; vertical-align: -4px; }
.att-viz { margin: 8px 0 26px; }

.att-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; margin-top: 10px; }
.att-grid > * { min-width: 0; }
@media (max-width: 820px) { .att-grid { grid-template-columns: 1fr; } }
.att-qkv p { font-size: 15px; color: var(--fg-soft); }
.att-qkv__list { list-style: none; padding: 0; margin: 0 0 14px; display: flex; flex-direction: column; gap: 10px; }
.att-qkv__list li { font-size: 15px; color: var(--fg-soft); }
.att-qkv__list b { color: var(--fg); }
.qkv-tag { display: inline-grid; place-items: center; width: 26px; height: 26px; border-radius: 7px; font-family: var(--mono); font-weight: 700; font-size: 14px; margin-right: 6px; color: var(--ink-900); }
.qkv-tag--q { background: var(--q); } .qkv-tag--k { background: var(--k); } .qkv-tag--v { background: var(--v); }

.att-matrix__grid { display: grid; gap: 2px; border: 1px solid var(--line); padding: 8px; border-radius: var(--radius-sm); background: var(--ink-900); }
.att-cell { aspect-ratio: 1; border-radius: 2px; cursor: crosshair; transition: outline 0.1s; }
.att-cell:hover { outline: 2px solid var(--fg); outline-offset: -1px; }
.att-cell--label { font-family: var(--mono); font-size: 10px; color: var(--fg-mute); display: grid; place-items: center; cursor: default; overflow: hidden; }

/* ===================== MULTI-HEAD ===================== */
.heads { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
@media (max-width: 700px) { .heads { grid-template-columns: 1fr; } }
.head { background: var(--ink-900); border: 1px solid var(--line); border-radius: var(--radius-sm); padding: 14px; }
.head__title { font-family: var(--mono); font-size: 13px; margin-bottom: 10px; display: flex; align-items: center; gap: 8px; }
.head__title .dot { width: 9px; height: 9px; border-radius: 50%; }
.head__desc { font-size: 12px; color: var(--fg-mute); margin-bottom: 10px; min-height: 32px; }
.head canvas { width: 100%; height: auto; display: block; border-radius: 6px; }

/* ===================== BLOCCO TRANSFORMER ===================== */
.demo[data-demo="block"] { display: grid; grid-template-columns: 360px 1fr; gap: 30px; }
@media (max-width: 820px) { .demo[data-demo="block"] { grid-template-columns: 1fr; } }
.block-diagram { display: flex; flex-direction: column; gap: 0; align-items: stretch; }
.bnode {
  position: relative; display: block; width: 100%; text-align: center; cursor: pointer; line-height: 1.35;
  background: var(--ink-700); border: 1px solid var(--line); border-radius: 10px; padding: 14px;
  font-family: var(--display); font-weight: 600; font-size: 15px; color: var(--fg);
  transition: transform 0.18s, border-color 0.2s, box-shadow 0.2s;
}
.bnode:hover, .bnode.is-active { border-color: var(--amber); box-shadow: var(--glow-amber); transform: translateX(4px); }
.bnode small { display: block; font-family: var(--body); font-weight: 400; font-size: 12px; color: var(--fg-mute); }
.bnode--io { background: var(--ink-850); border-style: dashed; }
.bnode--attn { background: linear-gradient(100deg, rgba(70,227,208,0.12), var(--ink-700)); }
.bnode--ffn { background: linear-gradient(100deg, rgba(157,140,255,0.12), var(--ink-700)); }
.bnode--norm { background: linear-gradient(100deg, rgba(255,180,84,0.1), var(--ink-700)); }
.bconn { height: 22px; width: 2px; margin: 0 auto; background: linear-gradient(var(--line), var(--cyan-deep)); }
.bconn--res { position: relative; }
.block-explain { background: var(--ink-900); border: 1px solid var(--line); border-radius: var(--radius-sm); padding: 22px; align-self: start; }
.block-explain h4 { font-family: var(--display); font-size: 20px; margin: 0 0 10px; color: var(--amber); }
.block-explain p { font-size: 15px; color: var(--fg-soft); margin: 0 0 10px; }
.block-explain__default { color: var(--fg-mute); font-style: italic; }

/* ===================== STACKING ===================== */
.stack { display: flex; flex-direction: column-reverse; gap: 3px; align-items: center; margin: 10px 0 20px; min-height: 200px; justify-content: flex-start; }
.stack-layer {
  width: clamp(180px, 60%, 420px); height: 14px; border-radius: 4px;
  background: linear-gradient(90deg, var(--ink-600), var(--ink-500));
  border: 1px solid var(--line); animation: pop 0.25s backwards;
}
.stack-layer--first { background: linear-gradient(90deg, var(--cyan-deep), var(--cyan)); }
.stack-layer--last { background: linear-gradient(90deg, var(--amber-deep), var(--amber)); }
.stack-info { text-align: center; font-size: 15px; color: var(--fg-soft); }
.stack-info b { color: var(--amber); font-family: var(--mono); }

.scale-table { margin-top: 30px; }
.table-wrap { overflow-x: auto; -webkit-overflow-scrolling: touch; }
.scale-table table { width: 100%; min-width: 580px; border-collapse: collapse; font-size: 15px; }
.scale-table td small { font-size: 12px; color: var(--fg-mute); }
.scale-table th, .scale-table td { text-align: left; padding: 12px 14px; border-bottom: 1px solid var(--line-soft); }
.scale-table th { font-family: var(--mono); font-size: 12px; text-transform: uppercase; letter-spacing: 0.08em; color: var(--cyan); }
.scale-table td { color: var(--fg-soft); }
.scale-table tr:hover td { background: var(--ink-800); }

/* ===================== OUTPUT / PREDIZIONE ===================== */
.output__prompt {
  display: flex; align-items: center; gap: 6px; font-family: var(--mono); font-size: 20px;
  background: var(--ink-900); border: 1px solid var(--line); border-radius: var(--radius-sm);
  padding: 16px 18px; margin-bottom: 22px;
}
.output__label { font-family: var(--body); font-size: 11px; text-transform: uppercase; letter-spacing: 0.1em; color: var(--fg-mute); margin-right: 6px; }
.output__text { color: var(--fg); }
.output__caret { color: var(--amber); animation: blink 1s steps(2) infinite; }
@keyframes blink { 50% { opacity: 0; } }

.output__bars { display: flex; flex-direction: column; gap: 8px; }
.obar { display: grid; grid-template-columns: 130px 1fr 70px; gap: 12px; align-items: center; }
.obar__word { font-family: var(--mono); font-size: 15px; text-align: right; color: var(--fg); overflow: hidden; text-overflow: ellipsis; }
.obar__track { background: var(--ink-900); border-radius: 999px; height: 22px; overflow: hidden; border: 1px solid var(--line-soft); }
.obar__fill { height: 100%; border-radius: 999px; background: linear-gradient(90deg, var(--cyan-deep), var(--cyan)); transition: width 0.4s cubic-bezier(0.2,0.8,0.2,1); }
.obar.is-top .obar__fill { background: linear-gradient(90deg, var(--amber-deep), var(--amber)); }
.obar__pct { font-family: var(--mono); font-size: 14px; color: var(--fg-soft); }
.obar.is-picked .obar__word { color: var(--amber); }
.obar.is-cut { opacity: 0.4; }
.obar.is-cut .obar__fill { background: var(--ink-500); }
.obar.is-cut .obar__pct { font-size: 12px; color: var(--fg-mute); }
.output__note { color: var(--fg-mute); font-size: 14px; }
.output__prompt--real { margin-top: 14px; font-size: 18px; flex-wrap: wrap; }
.real-tok { font-family: var(--mono); background: var(--ink-700); border: 1px solid var(--line); border-radius: 6px; padding: 1px 7px; white-space: pre; }
.obar--rest .obar__word { font-family: var(--body); font-size: 13px; color: var(--fg-mute); }
.obar--rest .obar__pct { color: var(--fg-mute); }
.output__result { margin-top: 18px; font-size: 16px; min-height: 26px; color: var(--fg-soft); }
.output__result b { color: var(--amber); font-family: var(--mono); }

/* ===================== LOOP / RICAPITOLAZIONE ===================== */
.loop__stage { display: flex; gap: 6px; flex-wrap: wrap; justify-content: center; margin-bottom: 22px; min-height: 56px; align-items: center; }
.loop-stage-pill {
  font-family: var(--mono); font-size: 12px; padding: 8px 12px; border-radius: 999px;
  border: 1px solid var(--line); background: var(--ink-900); color: var(--fg-mute); transition: 0.3s;
}
.loop-stage-pill.is-active { color: var(--ink-900); background: var(--cyan); border-color: transparent; box-shadow: var(--glow-cyan); }
.loop-stage-pill.is-done { color: var(--cyan); border-color: var(--cyan-deep); }
.loop__output { background: var(--ink-900); border: 1px solid var(--line); border-radius: var(--radius-sm); padding: 16px 18px; margin-top: 6px; }
.loop__text { font-family: var(--mono); font-size: 17px; line-height: 1.7; margin: 8px 0 0; color: var(--fg); min-height: 28px; }
.loop__text .new-tok { color: var(--amber); animation: pop 0.4s; }

/* ===================== GLOSSARIO ===================== */
.gloss-search {
  width: 100%; background: var(--ink-900); color: var(--fg); border: 1px solid var(--line);
  border-radius: 999px; padding: 13px 20px; font-family: var(--body); font-size: 16px; margin-bottom: 24px;
}
.gloss-search:focus { outline: none; border-color: var(--cyan-deep); box-shadow: var(--glow-cyan); }
.gloss { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 14px; }
.gterm { position: relative; margin: 0; background: var(--ink-800); border: 1px solid var(--line); border-radius: var(--radius-sm); padding: 16px 18px; transition: border-color 0.2s, transform 0.15s; }
.gterm:hover { border-color: var(--cyan-deep); transform: translateY(-2px); }
.gterm dt { font-family: var(--display); font-weight: 600; font-size: 17px; color: var(--amber); margin-bottom: 6px; }
.gterm dd { margin: 0; font-size: 14px; color: var(--fg-soft); line-height: 1.55; }
.gterm.is-hidden { display: none; }
.gterm.is-target { border-color: var(--amber); box-shadow: var(--glow-amber); }
.gterm__anchor {
  position: absolute; top: 14px; right: 16px; font-family: var(--mono); font-size: 13px;
  color: var(--fg-mute); text-decoration: none; opacity: 0; transition: opacity 0.15s;
}
.gterm:hover .gterm__anchor, .gterm__anchor:focus-visible { opacity: 1; }
.gterm__more { margin-top: 10px !important; }
.gterm__link { font-size: 13px; color: var(--cyan); text-decoration: none; }
.gterm__link:hover { text-decoration: underline; }
.gloss-empty { color: var(--fg-mute); font-style: italic; }

/* ===================== RISORSE ===================== */
.resources { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 16px; }
.resource {
  display: flex; flex-direction: column; gap: 6px; text-decoration: none;
  background: linear-gradient(180deg, var(--ink-700), var(--ink-800));
  border: 1px solid var(--line); border-radius: var(--radius); padding: 22px;
  transition: transform 0.2s, border-color 0.2s, box-shadow 0.25s;
}
.resource:hover { transform: translateY(-4px); border-color: var(--amber); box-shadow: var(--glow-amber); }
.resource__kind { font-family: var(--mono); font-size: 11px; text-transform: uppercase; letter-spacing: 0.12em; color: var(--cyan); }
.resource__title { font-family: var(--display); font-weight: 700; font-size: 20px; color: var(--fg); }
.resource__desc { font-size: 14px; color: var(--fg-mute); line-height: 1.5; }

/* ===================== INTERPRETABILITÀ / SAE ===================== */
.demo[data-demo="sae"] .demo__controls { margin-bottom: 24px; }
.sae-flow { display: grid; grid-template-columns: auto auto 1fr; gap: 20px; align-items: center; margin: 6px 0 28px; }
@media (max-width: 820px) { .sae-flow { grid-template-columns: 1fr; gap: 16px; } }

.sae-col__head { display: flex; align-items: baseline; gap: 10px; margin-bottom: 12px; flex-wrap: wrap; }
.sae-col__tag { font-family: var(--display); font-weight: 600; font-size: 15px; color: var(--fg); }
.sae-col__note { font-family: var(--mono); font-size: 11px; color: var(--fg-mute); }
.sae-col__cap { font-size: 12px; color: var(--fg-mute); margin: 10px 0 0; line-height: 1.45; }

.sae-dense { display: grid; grid-template-columns: repeat(2, 22px); gap: 4px; padding: 10px; width: max-content;
  background: var(--ink-900); border: 1px solid var(--line); border-radius: var(--radius-sm); }
.sae-dense__cell { width: 22px; height: 22px; border-radius: 4px; cursor: crosshair; transition: transform 0.12s; }
.sae-dense__cell:hover { transform: scale(1.18); }

.sae-arrow { display: flex; flex-direction: column; align-items: center; gap: 8px; }
.sae-arrow__box { font-family: var(--mono); font-weight: 700; font-size: 13px; color: var(--ink-900);
  background: linear-gradient(100deg, var(--violet), var(--cyan)); padding: 8px 14px; border-radius: 8px; box-shadow: var(--glow-cyan); }
.sae-arrow__line { width: 2px; height: 26px; background: linear-gradient(var(--cyan), transparent); }
.sae-arrow__cap { font-family: var(--mono); font-size: 10px; color: var(--fg-mute); }
@media (max-width: 820px) { .sae-arrow { flex-direction: row; } .sae-arrow__line { width: 26px; height: 2px; } }

.sae-grid { display: grid; grid-template-columns: repeat(12, 1fr); gap: 4px; padding: 12px;
  background: var(--ink-900); border: 1px solid var(--line); border-radius: var(--radius-sm); }
@media (max-width: 520px) { .sae-grid { grid-template-columns: repeat(8, 1fr); } }
.sae-cell { aspect-ratio: 1; border-radius: 3px; background: var(--ink-700); transition: transform 0.12s; }
.sae-cell.is-on { cursor: crosshair; animation: pop 0.3s backwards; }
.sae-cell.is-on:hover { transform: scale(1.3); z-index: 2; }

.sae-active { margin-top: 4px; }
.sae-bars { display: flex; flex-direction: column; gap: 8px; margin-top: 4px; }
.sae-bar { display: grid; grid-template-columns: 220px 1fr 54px; gap: 12px; align-items: center; }
@media (max-width: 560px) { .sae-bar { grid-template-columns: 130px 1fr 44px; } }
.sae-bar__name { font-size: 14px; color: var(--fg-soft); text-align: right; line-height: 1.3; }
.sae-bar.is-top .sae-bar__name { color: var(--fg); font-weight: 600; }
.sae-bar__track { background: var(--ink-900); border: 1px solid var(--line-soft); border-radius: 999px; height: 18px; overflow: hidden; }
.sae-bar__fill { height: 100%; width: 0; border-radius: 999px; background: linear-gradient(90deg, var(--cyan-deep), var(--cyan));
  transition: width 0.5s cubic-bezier(0.2,0.8,0.2,1); }
.sae-bar.is-top .sae-bar__fill { background: linear-gradient(90deg, var(--amber-deep), var(--amber)); }
.sae-bar__pct { font-family: var(--mono); font-size: 13px; color: var(--fg-soft); }

/* ===================== INFERENZA LOCALE / DS4 ===================== */
.ds4-intro { display: flex; align-items: center; gap: 24px; }
.ds4-intro b { color: var(--cyan); font-weight: 600; }
.ds4-intro__btn { white-space: nowrap; flex-shrink: 0; }
@media (max-width: 680px) { .ds4-intro { flex-direction: column; align-items: flex-start; } }

.ds4-lead { font-size: 15px; color: var(--fg-soft); margin: 0 0 18px; max-width: 760px; }
.ds4-lead em { color: var(--cyan); font-style: normal; }

#quantCanvas { width: 100%; height: auto; display: block; border-radius: var(--radius-sm); background: var(--ink-900); border: 1px solid var(--line); }
.quant-stats { display: flex; gap: 28px; align-items: center; flex-wrap: wrap; margin-top: 18px; }
.quant-stat { display: flex; flex-direction: column; gap: 4px; }
.quant-stat--bar { flex: 1; min-width: 200px; }
.quant-stat__k { font-size: 12px; color: var(--fg-mute); text-transform: uppercase; letter-spacing: 0.08em; }
.quant-stat b { font-family: var(--mono); font-size: 26px; color: var(--amber); }
.quant-bar { height: 16px; background: var(--ink-900); border: 1px solid var(--line-soft); border-radius: 999px; overflow: hidden; }
.quant-bar__fill { height: 100%; border-radius: 999px; background: linear-gradient(90deg, var(--cyan-deep), var(--cyan)); transition: width 0.35s cubic-bezier(0.2,0.8,0.2,1); }

.ram-bar { display: flex; gap: 2px; height: 46px; border-radius: var(--radius-sm); overflow: hidden; background: var(--ink-900); border: 1px solid var(--line); padding: 3px; }
.ram-seg { display: grid; place-items: center; font-family: var(--mono); font-size: 11px; color: var(--ink-900);
  border-radius: 4px; overflow: hidden; white-space: nowrap; transition: width 0.4s cubic-bezier(0.2,0.8,0.2,1); }
.ram-seg--fix { background: linear-gradient(180deg, var(--green), #6fc24e); }
.ram-seg--ram { background: linear-gradient(180deg, var(--cyan), var(--cyan-deep)); }
.ram-seg--ssd { background: repeating-linear-gradient(45deg, var(--violet), var(--violet) 6px, #8678e6 6px, #8678e6 12px); color: var(--fg); }
.ram-seg--bad { background: linear-gradient(180deg, var(--rose), #e0566f); color: var(--ink-900); }
.ram-legend { display: flex; gap: 18px; flex-wrap: wrap; margin-top: 12px; font-size: 12px; color: var(--fg-mute); }
.ram-legend span { display: inline-flex; align-items: center; gap: 7px; }
.ram-key { width: 13px; height: 13px; border-radius: 3px; display: inline-block; }
.ram-key--fix { background: var(--green); }
.ram-key--ram { background: var(--cyan); }
.ram-key--ssd { background: repeating-linear-gradient(45deg, var(--violet), var(--violet) 4px, #8678e6 4px, #8678e6 8px); }

.ram-readout { display: flex; align-items: center; justify-content: space-between; gap: 18px; flex-wrap: wrap; margin-top: 20px;
  background: var(--ink-900); border: 1px solid var(--line); border-radius: var(--radius-sm); padding: 14px 18px; }
.ram-mode { font-size: 15px; font-weight: 500; }
.ram-mode.is-good { color: var(--green); }
.ram-mode.is-stream { color: var(--cyan); }
.ram-mode.is-bad { color: var(--rose); }
.ram-speed { font-family: var(--mono); font-size: 28px; color: var(--amber); white-space: nowrap; }
.ram-speed small { font-family: var(--body); font-size: 12px; color: var(--fg-mute); }

.ds4-cards-title { margin: 40px 0 16px; }
.ds4-cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 14px; }
.ds4-card { background: linear-gradient(180deg, var(--ink-700), var(--ink-800)); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 20px; transition: transform 0.2s, border-color 0.2s, box-shadow 0.25s; }
.ds4-card:hover { transform: translateY(-4px); border-color: var(--cyan-deep); box-shadow: var(--glow-cyan); }
.ds4-card__tag { font-family: var(--mono); font-size: 10px; text-transform: uppercase; letter-spacing: 0.14em; color: var(--cyan); }
.ds4-card h3 { font-family: var(--display); font-weight: 600; font-size: 18px; margin: 8px 0 8px; color: var(--fg); }
.ds4-card p { font-size: 14px; color: var(--fg-soft); margin: 0; line-height: 1.55; }
.ds4-card em { color: var(--amber); font-style: normal; }

/* ===================== ADDESTRAMENTO ===================== */
.train-task { background: var(--ink-900); border: 1px solid var(--line); border-radius: var(--radius-sm); padding: 16px 18px; margin-bottom: 22px; }
.train-sentence { font-family: var(--mono); font-size: 19px; color: var(--fg); margin: 8px 0 0; line-height: 1.6; }
.train-blank { display: inline-block; min-width: 84px; text-align: center; padding: 2px 10px; border-radius: 6px;
  background: rgba(255,180,84,0.12); border: 1px dashed var(--amber-deep); color: var(--amber); transition: 0.3s; }
.train-blank.is-right { background: rgba(142,224,106,0.16); border-style: solid; border-color: var(--green); color: var(--green); }

.train-cap { display: block; font-size: 12px; color: var(--fg-mute); text-transform: uppercase; letter-spacing: 0.08em; margin-bottom: 12px; }
.train-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; align-items: start; }
@media (max-width: 820px) { .train-grid { grid-template-columns: 1fr; } }
.train-panel { min-width: 0; }
#trainCanvas { width: 100%; height: auto; display: block; border-radius: var(--radius-sm); background: var(--ink-900); border: 1px solid var(--line); }

.train-bars { display: flex; flex-direction: column; gap: 8px; }
.train-bar { display: grid; grid-template-columns: 90px 1fr 46px; gap: 12px; align-items: center; }
.train-bar__lab { font-family: var(--mono); font-size: 14px; color: var(--fg-soft); text-align: right; }
.train-bar--correct .train-bar__lab { color: var(--green); font-weight: 600; }
.train-bar__track { background: var(--ink-900); border: 1px solid var(--line-soft); border-radius: 999px; height: 18px; overflow: hidden; }
.train-bar__fill { height: 100%; width: 0; border-radius: 999px; background: linear-gradient(90deg, var(--cyan-deep), var(--cyan)); transition: width 0.25s cubic-bezier(0.2,0.8,0.2,1); }
.train-bar--correct .train-bar__fill { background: linear-gradient(90deg, #6fc24e, var(--green)); }
.train-bar__pct { font-family: var(--mono); font-size: 13px; color: var(--fg-soft); }

/* ===================== FINE-TUNING / RLHF ===================== */
.ft-stages { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; margin-bottom: 26px; }
@media (max-width: 760px) { .ft-stages { grid-template-columns: 1fr; } }
.ft-stage { background: linear-gradient(180deg, var(--ink-700), var(--ink-800)); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 22px 20px 20px; }
.ft-stage__n { display: inline-grid; place-items: center; width: 30px; height: 30px; border-radius: 50%;
  font-family: var(--mono); font-weight: 700; font-size: 14px; color: var(--ink-900);
  background: linear-gradient(100deg, var(--amber), var(--amber-deep)); box-shadow: var(--glow-amber); margin-bottom: 12px; }
.ft-stage h3 { margin-bottom: 8px; }
.ft-stage p { font-size: 14px; color: var(--fg-soft); margin: 0; line-height: 1.55; }
.ft-stage em { color: var(--cyan); font-style: normal; }

.rlhf-stage { background: var(--ink-900); border: 1px solid var(--line); border-radius: var(--radius-sm); padding: 20px; }
.rlhf-prompt { font-size: 17px; color: var(--fg); margin-bottom: 16px; }
.rlhf-prompt #rlhfPrompt { font-weight: 600; }
.rlhf-cards { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
@media (max-width: 680px) { .rlhf-cards { grid-template-columns: 1fr; } }
.rlhf-card { display: flex; flex-direction: column; gap: 10px; text-align: left; cursor: pointer; width: 100%;
  background: var(--ink-700); border: 1px solid var(--line); border-radius: var(--radius); padding: 18px;
  transition: transform 0.18s, border-color 0.2s, box-shadow 0.25s, opacity 0.3s; font-family: var(--body); }
.rlhf-card:hover { transform: translateY(-3px); border-color: var(--cyan-deep); box-shadow: var(--glow-cyan); }
.rlhf-card__tag { font-family: var(--mono); font-size: 11px; text-transform: uppercase; letter-spacing: 0.12em; color: var(--cyan); }
.rlhf-card__text { font-size: 15px; color: var(--fg); line-height: 1.5; flex: 1; }
.rlhf-card__pick { font-size: 13px; font-weight: 600; color: var(--fg-mute); }
.rlhf-card:hover .rlhf-card__pick { color: var(--cyan); }
.rlhf-card.is-picked { border-color: var(--green); box-shadow: 0 0 24px -6px rgba(142,224,106,0.5); }
.rlhf-card.is-picked .rlhf-card__pick { color: var(--green); }
.rlhf-card.is-picked .rlhf-card__pick::before { content: "✓ "; }
.rlhf-card.is-faded { opacity: 0.4; }
.rlhf-prog { font-family: var(--mono); font-size: 12px; color: var(--fg-mute); margin-top: 14px; }

.rlhf-reward { margin-top: 22px; background: var(--ink-900); border: 1px solid var(--line); border-radius: var(--radius-sm); padding: 18px; }
.rlhf-reward__head { display: flex; align-items: center; justify-content: space-between; gap: 16px; margin-bottom: 14px; }
.rlhf-bars { display: flex; flex-direction: column; gap: 10px; }
.rlhf-bar { display: grid; grid-template-columns: 96px 1fr; gap: 12px; align-items: center; }
.rlhf-bar__lab { font-size: 14px; color: var(--fg-soft); text-align: right; }
.rlhf-bar__track { background: var(--ink-800); border: 1px solid var(--line-soft); border-radius: 999px; height: 16px; overflow: hidden; }
.rlhf-bar__fill { height: 100%; width: 0; border-radius: 999px; background: linear-gradient(90deg, var(--violet), var(--cyan)); transition: width 0.4s cubic-bezier(0.2,0.8,0.2,1); }
.rlhf-result { margin-top: 18px; font-size: 15px; color: var(--fg-soft); line-height: 1.6; opacity: 0; transition: opacity 0.4s; }
.rlhf-result.is-on { opacity: 1; }
.rlhf-result b { color: var(--amber); }
.rlhf-result strong { color: var(--fg); }

/* ===================== REASONING ===================== */
.reason-task { background: var(--ink-900); border: 1px solid var(--line); border-radius: var(--radius-sm); padding: 16px 18px; margin-bottom: 18px; }
.reason-problem { font-size: 17px; color: var(--fg); margin: 8px 0 0; line-height: 1.6; }
.field.is-off { opacity: 0.4; pointer-events: none; }
.reason-grid { display: grid; grid-template-columns: 1fr 360px; gap: 24px; align-items: start; }
@media (max-width: 820px) { .reason-grid { grid-template-columns: 1fr; } }
.reason-panel { min-width: 0; }
#reasonCanvas { width: 100%; height: auto; display: block; border-radius: var(--radius-sm); background: var(--ink-900); border: 1px solid var(--line); margin-top: 14px; }

.reason-stream { display: flex; flex-direction: column; gap: 10px; min-height: 40px; }
.reason-step { display: grid; grid-template-columns: 26px 1fr; gap: 12px; align-items: start;
  background: var(--ink-900); border: 1px solid var(--line); border-radius: var(--radius-sm); padding: 12px 14px;
  font-size: 15px; color: var(--fg-soft); line-height: 1.5;
  opacity: 0; transform: translateY(8px); transition: opacity 0.35s, transform 0.35s; }
.reason-step.is-in { opacity: 1; transform: none; }
.reason-step__n { display: inline-grid; place-items: center; width: 24px; height: 24px; border-radius: 50%;
  font-family: var(--mono); font-size: 12px; font-weight: 700; color: var(--ink-900); background: var(--cyan); }
.reason-answer { margin-top: 16px; font-family: var(--mono); font-size: 17px; min-height: 24px; opacity: 0; transition: opacity 0.3s; }
.reason-answer.is-on { opacity: 1; }
.reason-answer.is-right { color: var(--green); }
.reason-answer.is-wrong { color: var(--rose); }

.reason-gauge { position: relative; height: 26px; background: var(--ink-900); border: 1px solid var(--line-soft); border-radius: 999px; overflow: hidden; }
.reason-gauge__fill { display: grid; place-items: center; height: 100%; width: 0; border-radius: 999px;
  font-family: var(--mono); font-size: 12px; font-weight: 700; color: var(--ink-900);
  background: linear-gradient(90deg, var(--cyan-deep), var(--cyan)); transition: width 0.4s cubic-bezier(0.2,0.8,0.2,1); white-space: nowrap; }
.reason-gauge.is-low .reason-gauge__fill { background: linear-gradient(90deg, #e0566f, var(--rose)); }

/* ===================== RAG ===================== */
.rag-search { margin-bottom: 12px; }
.rag-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; align-items: start; margin-top: 20px; }
@media (max-width: 820px) { .rag-grid { grid-template-columns: 1fr; } }
.rag-panel { min-width: 0; }

.rag-list { display: flex; flex-direction: column; gap: 8px; }
.rag-doc { display: grid; grid-template-columns: 72px 1fr auto; gap: 12px; align-items: center;
  background: var(--ink-900); border: 1px solid var(--line-soft); border-radius: var(--radius-sm); padding: 10px 12px;
  transition: border-color 0.25s, background 0.25s; }
.rag-doc--hit { border-color: var(--cyan-deep); background: rgba(70,227,208,0.06); }
.rag-doc__bar { height: 8px; background: var(--ink-700); border-radius: 999px; overflow: hidden; }
.rag-doc__fill { display: block; height: 100%; border-radius: 999px; transition: width 0.35s, background 0.35s; }
.rag-doc__txt { font-size: 13px; color: var(--fg-soft); line-height: 1.4; }
.rag-doc--hit .rag-doc__txt { color: var(--fg); }
.rag-doc__score { font-family: var(--mono); font-size: 11px; color: var(--fg-mute); white-space: nowrap; }
.rag-doc--hit .rag-doc__score { color: var(--cyan); }

.rag-context { display: flex; flex-direction: column; gap: 8px; min-height: 40px; }
.rag-chunk { font-size: 14px; color: var(--fg); line-height: 1.5; background: var(--ink-900);
  border-left: 3px solid var(--cyan-deep); border-radius: 0 var(--radius-sm) var(--radius-sm) 0; padding: 10px 14px; }
.rag-empty { font-size: 14px; color: var(--fg-mute); line-height: 1.5; font-style: italic; }
.rag-answer { margin-top: 16px; background: linear-gradient(100deg, rgba(255,180,84,0.08), rgba(70,227,208,0.05));
  border: 1px solid var(--line); border-radius: var(--radius-sm); padding: 14px 16px;
  opacity: 0; transform: translateY(6px); transition: opacity 0.3s, transform 0.3s; }
.rag-answer.is-on { opacity: 1; transform: none; }
.rag-answer__lab { display: block; font-size: 11px; text-transform: uppercase; letter-spacing: 0.1em; color: var(--amber); margin-bottom: 6px; }
.rag-answer__txt { font-size: 15px; color: var(--fg); line-height: 1.55; }

/* ===================== SHELL + INDICE LATERALE ===================== */
.shell {
  position: relative; z-index: 2;
  max-width: 1440px; margin: 0 auto;
  padding: 0 clamp(16px, 4vw, 40px);
}
.shell__main { min-width: 0; }

@media (min-width: 1040px) {
  .shell {
    display: grid;
    grid-template-columns: 244px minmax(0, 1fr);
    gap: 40px;
    align-items: start;
  }
}

.toc--side { display: none; }
@media (min-width: 1040px) {
  .toc--side {
    display: block;
    position: sticky; top: 80px; align-self: start;
    margin-top: var(--page-top);
    max-height: calc(100vh - 110px); overflow-y: auto;
    padding: 2px 10px 28px 0;
    scrollbar-width: thin; scrollbar-color: var(--ink-500) transparent;
    -webkit-mask-image: linear-gradient(180deg, transparent 0, #000 12px, #000 calc(100% - 22px), transparent 100%);
            mask-image: linear-gradient(180deg, transparent 0, #000 12px, #000 calc(100% - 22px), transparent 100%);
  }
}
.toc::-webkit-scrollbar { width: 8px; }
.toc::-webkit-scrollbar-thumb { background: var(--ink-500); border-radius: 8px; border: 2px solid transparent; background-clip: content-box; }

.toc__group { margin-bottom: 20px; }
.toc__group-title {
  font-family: var(--mono); font-size: 10.5px; letter-spacing: 0.16em; text-transform: uppercase;
  color: var(--fg-mute); margin: 0 0 8px; padding-left: 13px; transition: color 0.25s;
}
.toc__group-title b { color: var(--cyan); font-weight: 600; }
.toc__group.is-active .toc__group-title { color: var(--fg-soft); }
.toc__links { display: flex; flex-direction: column; gap: 1px; border-left: 1px solid var(--line-soft); }
.toc__link {
  display: flex; align-items: baseline; gap: 9px;
  padding: 5px 12px; margin-left: -1px;
  border-left: 2px solid transparent;
  color: var(--fg-soft); text-decoration: none; font-size: 13.5px; line-height: 1.35;
  transition: color 0.18s, border-color 0.18s;
}
.toc__link:hover { color: var(--fg); }
.toc__link.is-active { color: var(--fg); border-left-color: var(--amber); }
.toc__n { font-family: var(--mono); font-size: 10.5px; color: var(--fg-mute); flex: none; }
.toc__link.is-active .toc__n { color: var(--amber); }
.toc__link.is-done .toc__t::after { content: " ✓"; color: var(--green); font-size: 11px; }

/* ===================== DIVISORI DI PARTE ===================== */
.part {
  position: relative;
  padding: clamp(56px, 9vw, 110px) 0 clamp(4px, 1.5vw, 14px);
  border-top: 1px solid var(--line-soft);
}
.part:first-child { border-top: 0; }
.part__kicker {
  font-family: var(--mono); font-size: 12px; letter-spacing: 0.24em; text-transform: uppercase;
  color: var(--cyan); display: inline-block; margin-bottom: 16px;
}
.part__title {
  font-family: var(--display); font-weight: 700; letter-spacing: -0.03em; line-height: 1;
  font-size: clamp(36px, 6.4vw, 68px); margin: 0 0 16px;
}
.part__desc { color: var(--fg-soft); font-size: clamp(16px, 1.7vw, 19px); max-width: 580px; margin: 0; }
.part--ref { padding-top: clamp(48px, 7vw, 88px); }
.part--ref .part__title { font-size: clamp(26px, 4vw, 40px); }
.part--ref .part__kicker { color: var(--amber); }

/* ===================== FOOTER ===================== */
.footer { position: relative; z-index: 2; border-top: 1px solid var(--line); margin-top: 60px; padding: 50px clamp(16px, 4vw, 40px) 36px; }
.footer__inner { max-width: var(--maxw); margin: 0 auto; display: flex; justify-content: space-between; gap: 32px 56px; flex-wrap: wrap; }
.footer__col { max-width: 620px; }
.footer__brand { font-family: var(--display); font-weight: 700; font-size: 22px; margin: 0 0 10px; }
.footer__note { color: var(--fg-soft); font-size: 15px; max-width: 620px; margin: 0 0 12px; }
.footer__links { display: grid; grid-template-columns: repeat(2, auto); gap: 10px 32px; align-content: start; }
.footer__links a { color: var(--fg-soft); text-decoration: none; font-size: 14px; transition: color 0.15s; }
.footer__links a:hover { color: var(--amber); }
.footer__credit {
  max-width: var(--maxw); margin: 30px auto 0; padding-top: 18px; border-top: 1px solid var(--line-soft);
  color: var(--fg-mute); font-size: 12px; font-family: var(--mono); line-height: 1.7;
}
.footer__credit a { color: var(--fg-soft); }

/* tooltip globale */
.tooltip {
  position: fixed; z-index: 200; pointer-events: none; font-family: var(--mono); font-size: 12px;
  background: var(--ink-900); color: var(--fg); border: 1px solid var(--cyan-deep);
  padding: 6px 9px; border-radius: 6px; box-shadow: var(--shadow); opacity: 0; transition: opacity 0.12s;
  max-width: 220px; line-height: 1.4;
}
.tooltip.is-visible { opacity: 1; }

/* ===================== PAGINE (una pillola per pagina) ===================== */
main { overflow-x: clip; } /* gli aloni decorativi non devono allargare la pagina su mobile */
.section--page { padding: var(--page-top) 0 12px; }
.crumbs {
  display: flex; align-items: center; gap: 14px; flex-wrap: wrap; margin-bottom: 22px;
  font-family: var(--mono); font-size: 11.5px; letter-spacing: 0.14em; text-transform: uppercase;
}
main .crumbs a { color: var(--cyan); text-decoration: none; }
main .crumbs a:hover { color: var(--fg); }
.crumbs__time { color: var(--fg-mute); }
.crumbs__time::before { content: "◷ "; }

.pager { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin: 44px 0 10px; }
.pager__link {
  display: flex; flex-direction: column; gap: 4px; padding: 18px 20px; text-decoration: none;
  background: linear-gradient(180deg, var(--ink-700), var(--ink-800));
  border: 1px solid var(--line); border-radius: var(--radius);
  transition: transform 0.2s, border-color 0.2s, box-shadow 0.25s;
}
.pager__link:hover { transform: translateY(-3px); border-color: var(--amber); box-shadow: var(--glow-amber); }
.pager__link--next { text-align: right; grid-column: 2; }
.pager__dir { font-family: var(--mono); font-size: 11px; text-transform: uppercase; letter-spacing: 0.12em; color: var(--fg-mute); }
.pager__title { font-family: var(--display); font-weight: 600; font-size: 18px; color: var(--fg); }
@media (max-width: 560px) {
  .pager { grid-template-columns: 1fr; }
  .pager__link--next { grid-column: 1; }
  .pager__spacer { display: none; }
}

/* indice a scomparsa (mobile e tablet) */
.drawer {
  position: fixed; inset: 0; z-index: 85; background: rgba(4, 6, 10, 0.6); backdrop-filter: blur(3px);
  opacity: 0; pointer-events: none; transition: opacity 0.25s;
}
.drawer.is-open { opacity: 1; pointer-events: auto; }
.drawer__inner {
  position: absolute; top: 0; right: 0; bottom: 0; width: min(360px, 90vw); overflow-y: auto;
  padding: 80px 18px 32px; background: var(--ink-850); border-left: 1px solid var(--line);
  transform: translateX(28px); transition: transform 0.25s; overscroll-behavior: contain;
}
.drawer.is-open .drawer__inner { transform: none; }
.drawer__home { display: block; margin: 0 0 20px 13px; color: var(--cyan); text-decoration: none; font-size: 14px; }
.toc--drawer .toc__link { padding-top: 8px; padding-bottom: 8px; font-size: 15px; }
body.has-drawer { overflow: hidden; }
@media (min-width: 1040px) { .drawer { display: none; } }

/* ===================== HOME ===================== */
.home { position: relative; z-index: 2; max-width: var(--maxw); margin: 0 auto; padding: 0 clamp(16px, 4vw, 40px); }
.section--route { padding-top: 40px; }
.section--route .section__head { margin-bottom: 28px; }

.route-progress {
  display: flex; align-items: center; gap: 12px 18px; flex-wrap: wrap; margin: 0 0 30px;
  background: var(--ink-800); border: 1px solid var(--line); border-radius: var(--radius); padding: 14px 18px;
}
.route-progress__txt { font-size: 15px; color: var(--fg-soft); }
.route-progress__txt b { font-family: var(--mono); color: var(--green); }
.route-progress__note { color: var(--fg-mute); font-size: 13px; }
.route-progress__bar { flex: 1; min-width: 140px; height: 8px; background: var(--ink-900); border-radius: 999px; overflow: hidden; }
.route-progress__bar span { display: block; height: 100%; width: 0; background: linear-gradient(90deg, var(--cyan-deep), var(--green)); transition: width 0.4s; }

.route-part { padding: 34px 0 10px; border-top: 1px solid var(--line-soft); scroll-margin-top: 70px; }
.route-part:first-of-type { border-top: 0; padding-top: 6px; }
.route-part__head { max-width: 660px; margin-bottom: 18px; }
.route-part__title { font-family: var(--display); font-weight: 700; font-size: clamp(26px, 3.4vw, 36px); letter-spacing: -0.02em; line-height: 1.1; margin: 0 0 8px; }
.route-part__desc { color: var(--fg-soft); margin: 0; font-size: 16px; }
.route-part__grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(230px, 1fr)); gap: 12px; }
.pill-card {
  display: flex; flex-direction: column; gap: 6px; padding: 18px; color: var(--fg); text-decoration: none;
  background: linear-gradient(180deg, var(--ink-700), var(--ink-800));
  border: 1px solid var(--line); border-radius: var(--radius);
  transition: transform 0.2s, border-color 0.2s, box-shadow 0.25s;
}
.pill-card:hover { transform: translateY(-3px); border-color: var(--cyan-deep); box-shadow: var(--glow-cyan); }
.pill-card__top { display: flex; justify-content: space-between; align-items: center; min-height: 20px; }
.pill-card__n { font-family: var(--mono); font-size: 12px; color: var(--amber); }
.pill-card__badge {
  font-family: var(--mono); font-size: 10px; text-transform: uppercase; letter-spacing: 0.1em;
  color: var(--cyan); border: 1px solid rgba(70, 227, 208, 0.4); border-radius: 999px; padding: 2px 8px;
}
.pill-card__badge.is-new { color: var(--ink-900); background: linear-gradient(100deg, var(--amber), var(--amber-deep)); border-color: transparent; }
.pill-card__t { font-family: var(--display); font-weight: 600; font-size: 18px; line-height: 1.2; }
.pill-card__d { font-size: 14px; color: var(--fg-mute); line-height: 1.45; flex: 1; }
.pill-card__meta { display: flex; justify-content: space-between; font-family: var(--mono); font-size: 11px; color: var(--fg-mute); }
.pill-card__done { display: none; color: var(--green); }
.pill-card.is-done { border-color: rgba(142, 224, 106, 0.35); }
.pill-card.is-done .pill-card__done { display: inline; }

.section--more { padding-top: 30px; }
.more-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 16px; }
.more-card {
  display: flex; flex-direction: column; gap: 6px; padding: 22px; text-decoration: none;
  background: linear-gradient(180deg, var(--ink-700), var(--ink-800));
  border: 1px solid var(--line); border-radius: var(--radius);
  transition: transform 0.2s, border-color 0.2s, box-shadow 0.25s;
}
.more-card:hover { transform: translateY(-4px); border-color: var(--amber); box-shadow: var(--glow-amber); }
.more-card--hot { border-color: rgba(255, 180, 84, 0.4); background: linear-gradient(160deg, rgba(255, 180, 84, 0.1), var(--ink-800) 70%); }
.more-card__t { font-family: var(--display); font-weight: 700; font-size: 22px; color: var(--fg); }
.more-card__d { font-size: 14px; color: var(--fg-mute); line-height: 1.5; }

/* ===================== «NEI MODELLI DI OGGI» ===================== */
.today {
  position: relative; margin-top: 28px; padding: 20px 22px 18px; border-radius: var(--radius);
  border: 1px solid rgba(157, 140, 255, 0.35);
  background: linear-gradient(120deg, rgba(157, 140, 255, 0.1), rgba(70, 227, 208, 0.04) 60%, transparent);
}
.today__tag {
  display: inline-flex; align-items: center; gap: 8px; margin-bottom: 8px;
  font-family: var(--mono); font-size: 11px; text-transform: uppercase; letter-spacing: 0.14em; color: var(--violet);
}
.today__tag::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: var(--violet); box-shadow: 0 0 10px var(--violet); }
.today p { margin: 0 0 10px; color: var(--fg-soft); font-size: 16px; }
.today p:last-child { margin-bottom: 0; }
.today em { color: var(--fg); font-style: normal; }
.today__list { margin: 4px 0 12px; padding-left: 20px; color: var(--fg-soft); font-size: 15px; display: flex; flex-direction: column; gap: 6px; }
.today__list b { color: var(--fg); }

/* ===================== QUIZ ===================== */
.quiz {
  margin-top: 40px; padding: clamp(18px, 3vw, 28px); border-radius: 18px;
  border: 1px solid var(--line); background: linear-gradient(180deg, var(--ink-800), var(--ink-850));
}
.quiz__kicker { font-family: var(--mono); font-size: 11px; text-transform: uppercase; letter-spacing: 0.16em; color: var(--green); }
.quiz__title { font-family: var(--display); font-weight: 700; font-size: clamp(22px, 3vw, 28px); letter-spacing: -0.015em; margin: 6px 0 6px; }
.quiz__score { color: var(--fg-soft); font-size: 15px; margin: 0 0 18px; }
.quiz__score b { color: var(--amber); }
.quiz__list { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 18px; counter-reset: q; }
.quiz__q { counter-increment: q; border-top: 1px solid var(--line-soft); padding-top: 16px; }
.quiz__text { font-weight: 600; margin: 0 0 10px; color: var(--fg); }
.quiz__text::before { content: counter(q) ". "; font-family: var(--mono); color: var(--amber); }
.quiz__opts { display: flex; flex-direction: column; gap: 8px; }
.quiz__opt {
  text-align: left; font: inherit; font-size: 15px; line-height: 1.45; color: var(--fg-soft); cursor: pointer;
  background: var(--ink-900); border: 1px solid var(--line); border-radius: 10px; padding: 10px 14px;
  transition: border-color 0.15s, color 0.15s, background 0.15s, opacity 0.2s;
}
.quiz__opt:hover { border-color: var(--cyan-deep); color: var(--fg); }
.quiz__q.is-done .quiz__opt { cursor: default; }
.quiz__q.is-done .quiz__opt:not(.is-right):not(.is-wrong) { opacity: 0.5; }
.quiz__opt.is-right { border-color: var(--green); color: var(--fg); background: rgba(142, 224, 106, 0.1); }
.quiz__opt.is-right::before { content: "✓ "; color: var(--green); }
.quiz__opt.is-wrong { border-color: var(--rose); color: var(--fg); background: rgba(255, 122, 147, 0.08); }
.quiz__opt.is-wrong::before { content: "✗ "; color: var(--rose); }
.quiz__why { margin: 10px 0 0; font-size: 14.5px; color: var(--fg-soft); line-height: 1.55; }
.quiz__why b { color: var(--fg); }
.quiz__retry {
  margin-left: 6px; font: inherit; font-size: 13px; color: var(--cyan); cursor: pointer;
  background: none; border: 1px solid var(--cyan-deep); border-radius: 999px; padding: 3px 12px;
}
.quiz__retry:hover { background: rgba(70, 227, 208, 0.1); }

/* ===================== TOKENIZER REALE + TASSA SULL'ITALIANO ===================== */
.tok-status { font-family: var(--mono); font-size: 12px; color: var(--fg-mute); margin: 0 0 14px; }
.tok-status.is-ready { color: var(--green); }
.tok-status.is-error { color: var(--rose); }
.token.c0 { background: rgba(255, 180, 84, 0.13); border-color: rgba(255, 180, 84, 0.35); }
.token.c1 { background: rgba(70, 227, 208, 0.11); border-color: rgba(70, 227, 208, 0.35); }
.token.c2 { background: rgba(157, 140, 255, 0.14); border-color: rgba(157, 140, 255, 0.4); }
.token.c3 { background: rgba(142, 224, 106, 0.11); border-color: rgba(142, 224, 106, 0.35); }
.token.c4 { background: rgba(255, 122, 147, 0.11); border-color: rgba(255, 122, 147, 0.35); }
.token--multi { outline: 1px dashed var(--amber); outline-offset: 2px; }
.tok-tokens--sm { gap: 4px; }
.tok-tokens--sm .token { font-size: 13px; padding: 5px 7px 15px; }
.tok-tokens--sm .token__id { font-size: 8px; }

.tax-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 22px; margin-top: 16px; }
@media (max-width: 760px) { .tax-grid { grid-template-columns: 1fr; } }
.tax-col { min-width: 0; }
.tax-count { font-size: 14px; color: var(--fg-mute); margin: 10px 0 8px; }
.tax-count b { font-family: var(--mono); font-size: 22px; color: var(--fg); margin-right: 2px; }
.lang-tag {
  display: inline-block; font-family: var(--mono); font-size: 10px; font-weight: 700; line-height: 1.5;
  color: var(--ink-900); background: var(--amber); border-radius: 4px; padding: 0 5px; margin-right: 4px;
}
.lang-tag--en { background: var(--cyan); }
.tax-result { margin-top: 20px; padding-top: 18px; border-top: 1px solid var(--line-soft); }
.tax-bars { display: flex; flex-direction: column; gap: 8px; }
.tax-bar { display: grid; grid-template-columns: 30px 1fr 36px; gap: 10px; align-items: center; }
.tax-bar b { font-family: var(--mono); color: var(--fg); }
.tax-bar__track { height: 14px; background: var(--ink-900); border: 1px solid var(--line-soft); border-radius: 999px; overflow: hidden; }
.tax-bar__fill { display: block; height: 100%; border-radius: 999px; background: linear-gradient(90deg, var(--amber-deep), var(--amber)); transition: width 0.4s; }
.tax-bar__fill--en { background: linear-gradient(90deg, var(--cyan-deep), var(--cyan)); }
.tax-verdict { margin: 14px 0 0; font-size: 16px; color: var(--fg-soft); }
.tax-verdict b { color: var(--amber); }

/* ===================== ROPE ===================== */
.rope-grid { display: grid; grid-template-columns: 1fr 320px; gap: 26px; align-items: center; }
@media (max-width: 760px) { .rope-grid { grid-template-columns: 1fr; } }
.rope-controls { display: flex; flex-direction: column; gap: 16px; align-items: flex-start; min-width: 0; }
.rope-controls .field { width: 100%; }
#ropeCanvas { width: 100%; max-width: 320px; height: auto; display: block; margin: 0 auto; background: var(--ink-900); border: 1px solid var(--line); border-radius: var(--radius-sm); }
.rope-readout { display: flex; gap: 30px; }
.rope-readout > div { display: flex; flex-direction: column; gap: 2px; }
.rope-readout b { font-family: var(--mono); font-size: 24px; color: var(--amber); }

/* ===================== MIXTURE OF EXPERTS ===================== */
.moe-sentence { display: flex; flex-wrap: wrap; gap: 8px; justify-content: center; margin: 4px 0 6px; }
.moe-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 26px; margin-top: 18px; align-items: start; }
@media (max-width: 880px) { .moe-grid { grid-template-columns: 1fr; } }
.moe-panel { min-width: 0; }
.moe-bars { display: flex; flex-direction: column; gap: 6px; }
.moe-bar { display: grid; grid-template-columns: minmax(0, 200px) 1fr 50px; gap: 10px; align-items: center; opacity: 0.5; transition: opacity 0.2s; }
.moe-bar.is-on { opacity: 1; }
.moe-bar__lab { font-size: 13px; color: var(--fg-soft); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.moe-bar__n { font-family: var(--mono); font-size: 11px; color: var(--fg-mute); margin-right: 6px; }
.moe-bar.is-on .moe-bar__lab { color: var(--fg); }
.moe-bar.is-on .moe-bar__n { color: var(--amber); }
.moe-bar__track { height: 12px; background: var(--ink-900); border: 1px solid var(--line-soft); border-radius: 999px; overflow: hidden; }
.moe-bar__fill { display: block; height: 100%; border-radius: 999px; background: var(--ink-500); transition: width 0.35s; }
.moe-bar.is-on .moe-bar__fill { background: linear-gradient(90deg, var(--amber-deep), var(--amber)); }
.moe-bar__pct { font-family: var(--mono); font-size: 12px; color: var(--fg-soft); text-align: right; }
.moe-map {
  display: grid; gap: 3px; padding: 10px; font-family: var(--mono); font-size: 11px;
  background: var(--ink-900); border: 1px solid var(--line); border-radius: var(--radius-sm);
}
.moe-map__head { text-align: center; color: var(--fg-mute); }
.moe-map__tok { color: var(--fg-soft); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; padding-right: 6px; align-self: center; }
.moe-map__tok.is-current { color: var(--amber); }
.moe-map__cell { height: 18px; border-radius: 3px; background: var(--ink-700); }
.moe-map__cell.is-row:not(.is-on) { background: var(--ink-600); }
.moe-map__cell.is-on.is-row { outline: 1.5px solid var(--fg); outline-offset: -1px; }
.moe-meter { margin-top: 22px; }
.moe-meter__row { display: flex; justify-content: space-between; align-items: baseline; margin-bottom: 8px; gap: 12px; }
.moe-meter__row b { font-family: var(--mono); font-size: 24px; color: var(--amber); }

/* ===================== FINESTRA DI CONTESTO + KV CACHE ===================== */
.ctx-chat { display: flex; flex-direction: column; gap: 10px; padding: 16px; background: var(--ink-900); border: 1px solid var(--line); border-radius: var(--radius-sm); }
.ctx-gauge {
  display: flex; justify-content: space-between; flex-wrap: wrap; gap: 6px 14px; padding-bottom: 10px;
  border-bottom: 1px dashed var(--line); font-family: var(--mono); font-size: 12px; color: var(--fg-mute);
}
.ctx-gauge b { color: var(--amber); }
.ctx-gauge__out { color: var(--rose); }
.ctx-gauge__ok { color: var(--green); }
.ctx-msg {
  max-width: 82%; display: flex; flex-direction: column; gap: 3px; padding: 10px 14px; border-radius: 14px;
  font-size: 14.5px; line-height: 1.45; transition: opacity 0.3s, filter 0.3s;
}
.ctx-msg--user { align-self: flex-end; background: rgba(255, 180, 84, 0.12); border: 1px solid rgba(255, 180, 84, 0.3); border-bottom-right-radius: 4px; }
.ctx-msg--bot { align-self: flex-start; background: var(--ink-700); border: 1px solid var(--line); border-bottom-left-radius: 4px; }
.ctx-msg__who { font-family: var(--mono); font-size: 10px; text-transform: uppercase; letter-spacing: 0.12em; color: var(--fg-mute); }
.ctx-msg__text { color: var(--fg); }
.ctx-msg__tok { font-family: var(--mono); font-size: 10px; color: var(--fg-mute); align-self: flex-end; }
.ctx-msg.is-out { opacity: 0.3; filter: grayscale(1); border-style: dashed; }
.ctx-msg.is-out .ctx-msg__who::after { content: " · fuori dalla finestra"; color: var(--rose); }
@media (max-width: 560px) { .ctx-msg { max-width: 94%; } }
.ctx-answer { margin-top: 16px; padding: 14px 16px; border-radius: var(--radius-sm); border: 1px solid var(--line); font-size: 16px; color: var(--fg); }
.ctx-answer .output__label { display: block; margin-bottom: 4px; }
.ctx-answer.is-good { border-color: rgba(142, 224, 106, 0.6); background: rgba(142, 224, 106, 0.07); }
.ctx-answer.is-good b { color: var(--green); }
.ctx-answer.is-bad { border-color: rgba(255, 122, 147, 0.6); background: rgba(255, 122, 147, 0.06); }
.ctx-answer small { display: block; margin-top: 6px; color: var(--fg-mute); font-size: 13px; }

.kv-tokens { display: flex; flex-wrap: wrap; gap: 4px; margin: 4px 0 18px; min-height: 18px; }
.kv-tok { width: 16px; height: 16px; border-radius: 4px; background: var(--cyan-deep); opacity: 0.85; }
.kv-tok--prompt { background: var(--ink-500); }
.kv-tok--new { background: var(--amber); box-shadow: var(--glow-amber); animation: pop 0.3s; opacity: 1; }
.kv-compare { display: flex; flex-direction: column; gap: 10px; }
.kv-row { display: grid; grid-template-columns: 150px 1fr 160px; gap: 12px; align-items: center; }
.kv-row__lab { font-size: 14px; color: var(--fg-soft); text-align: right; }
.kv-row__track { height: 16px; background: var(--ink-900); border: 1px solid var(--line-soft); border-radius: 999px; overflow: hidden; }
.kv-row__fill { display: block; height: 100%; width: 0; border-radius: 999px; background: linear-gradient(90deg, var(--cyan-deep), var(--cyan)); transition: width 0.3s; }
.kv-row__fill--bad { background: linear-gradient(90deg, #e0566f, var(--rose)); }
.kv-row__fill--mem { background: linear-gradient(90deg, #8678e6, var(--violet)); }
.kv-row__val { font-size: 13px; color: var(--fg-mute); }
.kv-row__val b { font-family: var(--mono); font-size: 15px; color: var(--fg); }
@media (max-width: 620px) {
  .kv-row { grid-template-columns: 1fr; gap: 4px; }
  .kv-row__lab { text-align: left; }
}

/* ===================== MULTIMODALITÀ ===================== */
.vis-count { font-size: 14px; color: var(--fg-mute); align-self: center; }
.vis-count b { font-family: var(--mono); font-size: 26px; color: var(--amber); margin-right: 4px; }
.vis-grid { display: grid; grid-template-columns: minmax(0, 320px) 1fr; gap: 28px; align-items: start; margin-bottom: 22px; }
@media (max-width: 760px) { .vis-grid { grid-template-columns: 1fr; } }
.vis-panel { min-width: 0; }
#visCanvas { width: 100%; max-width: 320px; height: auto; display: block; border-radius: var(--radius-sm); border: 1px solid var(--line); cursor: crosshair; }
.vis-zoom { display: flex; align-items: center; gap: 14px; flex-wrap: wrap; margin-bottom: 12px; }
#visZoom { width: 96px; height: 96px; border-radius: 8px; border: 2px solid var(--amber); image-rendering: pixelated; background: var(--ink-900); }
.vis-arrow { font-size: 22px; color: var(--fg-mute); }
.vis-vec { display: grid; grid-template-columns: repeat(8, 14px); gap: 3px; padding: 8px; background: var(--ink-900); border: 1px solid var(--line); border-radius: 8px; }
.vis-vec span { display: block; width: 14px; height: 14px; border-radius: 3px; }
.vis-seq {
  display: flex; flex-wrap: wrap; gap: 4px; align-items: center; margin-top: 4px; padding: 12px;
  background: var(--ink-900); border: 1px solid var(--line); border-radius: var(--radius-sm);
}
.vis-tok--img { width: 18px; height: 18px; border-radius: 4px; border: 1px solid rgba(255, 255, 255, 0.15); }
.vis-tok--txt { font-family: var(--mono); font-size: 12px; padding: 3px 7px; border-radius: 5px; background: var(--ink-700); border: 1px solid var(--line); color: var(--fg); }
.vis-more { font-family: var(--mono); font-size: 11px; color: var(--fg-mute); padding: 0 6px; }

/* ===================== AGENTI ===================== */
.agent-task { background: var(--ink-900); border: 1px solid var(--line); border-radius: var(--radius-sm); padding: 16px 18px; margin-bottom: 20px; }
.agent-task__text { font-size: 17px; color: var(--fg); margin: 8px 0 0; line-height: 1.55; }
.agent-grid { display: grid; grid-template-columns: 260px 1fr; gap: 24px; align-items: start; }
@media (max-width: 820px) { .agent-grid { grid-template-columns: 1fr; } }
.agent-loop { display: flex; flex-direction: column; align-items: stretch; gap: 6px; }
.agent-node {
  text-align: center; padding: 12px; border-radius: 12px; border: 1px solid var(--line); background: var(--ink-700);
  font-family: var(--display); font-weight: 600; font-size: 15px;
  transition: border-color 0.25s, box-shadow 0.25s, transform 0.25s;
}
.agent-node small { display: block; font-family: var(--body); font-weight: 400; font-size: 12px; color: var(--fg-mute); }
.agent-node__ico { display: block; font-size: 15px; color: var(--cyan); margin-bottom: 2px; }
.agent-node.is-active { border-color: var(--amber); box-shadow: var(--glow-amber); transform: scale(1.02); }
.agent-link { text-align: center; font-family: var(--mono); font-size: 11px; color: var(--fg-mute); }
.agent-node--tools { display: flex; flex-wrap: wrap; gap: 6px; justify-content: center; background: var(--ink-850); border-style: dashed; }
.agent-tool { font-family: var(--mono); font-size: 12px; font-weight: 400; padding: 4px 8px; border-radius: 6px; border: 1px solid var(--line); color: var(--fg-soft); transition: 0.25s; }
.agent-tool.is-active { color: var(--ink-900); background: var(--cyan); border-color: transparent; box-shadow: var(--glow-cyan); }
.agent-ctx { min-width: 0; padding: 14px; background: var(--ink-900); border: 1px solid var(--line); border-radius: var(--radius-sm); }
.agent-ctx__head { display: flex; justify-content: space-between; align-items: baseline; gap: 12px; }
.agent-ctx__tok { font-size: 12px; color: var(--fg-mute); }
.agent-ctx__tok b { font-family: var(--mono); color: var(--amber); font-size: 15px; }
.agent-msgs { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 8px; max-height: 380px; overflow-y: auto; scroll-behavior: smooth; }
.agent-msg { padding: 10px 12px; border-radius: 10px; border: 1px solid var(--line); background: var(--ink-800); font-size: 14px; line-height: 1.5; }
.agent-msg.is-new { animation: pop 0.35s; }
.agent-msg__lab {
  display: flex; justify-content: space-between; gap: 10px; margin-bottom: 4px;
  font-family: var(--mono); font-size: 10.5px; text-transform: uppercase; letter-spacing: 0.1em; color: var(--fg-mute);
}
.agent-msg__tok { text-transform: none; letter-spacing: 0; white-space: nowrap; }
.agent-msg__body { color: var(--fg); overflow-wrap: anywhere; }
.agent-msg__body code { font-size: 12.5px; color: var(--cyan); }
.agent-msg__body b { color: var(--amber); }
.agent-msg--system { border-style: dashed; }
.agent-msg--user { border-color: rgba(255, 180, 84, 0.4); }
.agent-msg--call { border-color: rgba(157, 140, 255, 0.5); background: rgba(157, 140, 255, 0.07); }
.agent-msg--call .agent-msg__lab { color: var(--violet); }
.agent-msg--result { border-color: rgba(70, 227, 208, 0.45); background: rgba(70, 227, 208, 0.05); }
.agent-msg--result .agent-msg__lab { color: var(--cyan); }
.agent-msg--answer { border-color: rgba(142, 224, 106, 0.5); background: rgba(142, 224, 106, 0.07); }
.agent-msg--answer .agent-msg__lab { color: var(--green); }
.agent-controls { margin: 18px 0 0; align-items: center; }
.agent-step { font-family: var(--mono); font-size: 12px; color: var(--fg-mute); }
.demo .ft-stages, .demo + .ft-stages { margin-top: 26px; }

/* ===================== RISORSE E KIT DOCENTI ===================== */
.res-title, .kit-title { margin: 40px 0 16px; }
.section__head + .res-title { margin-top: 0; }
.kit-paths { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 14px; }
.kit-path { background: linear-gradient(180deg, var(--ink-700), var(--ink-800)); border: 1px solid var(--line); border-radius: var(--radius); padding: 20px; }
.kit-path__time {
  display: inline-block; font-family: var(--mono); font-size: 11px; text-transform: uppercase; letter-spacing: 0.12em;
  color: var(--ink-900); background: var(--cyan); border-radius: 999px; padding: 2px 9px;
}
.kit-path h3 { font-family: var(--display); font-weight: 600; font-size: 19px; margin: 12px 0 6px; }
.kit-path p { font-size: 14px; color: var(--fg-mute); margin: 0 0 10px; }
.kit-path ol { margin: 0; padding-left: 20px; font-size: 14.5px; color: var(--fg-soft); display: flex; flex-direction: column; gap: 4px; }
.kit-table table { width: 100%; min-width: 680px; border-collapse: collapse; font-size: 14.5px; }
.kit-table th, .kit-table td { text-align: left; vertical-align: top; padding: 12px 14px; border-bottom: 1px solid var(--line-soft); color: var(--fg-soft); }
.kit-table th { font-family: var(--mono); font-size: 12px; text-transform: uppercase; letter-spacing: 0.08em; color: var(--cyan); }
.kit-table td:first-child { white-space: nowrap; }
.kit-tips { color: var(--fg-soft); padding-left: 20px; display: flex; flex-direction: column; gap: 8px; margin: 0; }
.kit-tips b { color: var(--fg); }

/* ===================== STAMPA ===================== */
@media print {
  :root {
    --fg: #111; --fg-soft: #333; --fg-mute: #555;
    --ink-900: #fff; --ink-850: #fff; --ink-800: #f5f5f5; --ink-700: #eee; --ink-600: #e4e4e4;
    --line: #ccc; --line-soft: #ddd;
  }
  body { background: #fff; color: #111; font-size: 11pt; }
  .grain, .bg-grid, .scroll-progress, .nav, .drawer, .toc--side, .pager, .skip-link, .coffee-btn,
  .hero__canvas, .hero__scroll, .footer__links { display: none !important; }
  .shell { display: block; }
  .section--page { padding-top: 0; }
  .section--feature::before { display: none; }
  .demo, .note, .callout, .today, .quiz, .kit-path { box-shadow: none; break-inside: avoid; }
  .js [data-reveal] { opacity: 1; transform: none; }
  main a:not([class]) { color: #111; }
}