/* KDD Atlas — Swiss editorial técnico */

/* ——— Portada cinematic (mismo lenguaje visual del sitio) ——— */
body.cover-active,
body.site-locked {
  overflow: hidden;
}

.cover {
  position: fixed;
  inset: 0;
  z-index: 200;
  display: grid;
  place-items: center;
  padding: 1.5rem;
  background: #0b0d0c;
  color: var(--bone, #edeae3);
  overflow: hidden;
}

.cover-bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.cover-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(40px);
}

.cover-orb-a {
  width: 42vw;
  height: 42vw;
  top: -12%;
  right: -8%;
  background: rgb(255 59 31 / 0.28);
  animation: orbDrift 12s ease-in-out infinite alternate;
}

.cover-orb-b {
  width: 36vw;
  height: 36vw;
  bottom: -18%;
  left: -10%;
  background: rgb(31 168 154 / 0.22);
  animation: orbDrift 14s ease-in-out infinite alternate-reverse;
}

.cover-grid {
  position: absolute;
  inset: 0;
  opacity: 0.22;
  background-image:
    linear-gradient(rgb(237 234 227 / 0.07) 1px, transparent 1px),
    linear-gradient(90deg, rgb(237 234 227 / 0.07) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(ellipse at center, #000 35%, transparent 78%);
}

.cover-noise {
  position: absolute;
  inset: 0;
  opacity: 0.08;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

.cover-wipe {
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, #ff3b1f 0%, #1fa89a 55%, #0b0d0c 100%);
  transform: scaleX(0);
  transform-origin: left center;
  z-index: 3;
  pointer-events: none;
}

.cover-inner {
  position: relative;
  z-index: 2;
  width: min(100%, 56rem);
  min-height: min(88vh, 44rem);
  display: grid;
  grid-template-rows: auto 1fr auto;
  gap: 2rem;
}

.cover-top {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.cover-logo {
  display: flex;
  align-items: center;
  gap: 0.85rem;
}

.udg-mark {
  width: 3.1rem;
  height: 3.1rem;
  display: block;
  flex-shrink: 0;
}

.udg-wordmark {
  margin: 0;
  font-family: var(--font-mono, "IBM Plex Mono", monospace);
  font-size: 1rem;
  letter-spacing: 0.08em;
  color: rgb(237 234 227 / 0.85);
  font-weight: 500;
}

.udg-wordmark span {
  color: var(--bone, #edeae3);
  font-weight: 500;
}

.cover-meta {
  margin: 0;
  font-family: var(--font-body, "IBM Plex Sans", sans-serif);
  font-size: 1rem;
  line-height: 1.45;
  color: rgb(237 234 227 / 0.85);
  text-align: right;
  font-weight: 500;
}

.cover-center {
  display: grid;
  align-content: center;
  justify-items: start;
  gap: 0.85rem;
}

.cover-kicker {
  margin: 0;
  font-family: var(--font-body, "IBM Plex Sans", sans-serif);
  font-size: 1.05rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: #1fa89a;
}

.cover-title {
  margin: 0;
  font-family: var(--font-display, Syne, sans-serif);
  font-weight: 800;
  font-size: clamp(2.4rem, 8vw, 5.4rem);
  line-height: 0.92;
  letter-spacing: -0.05em;
  color: var(--bone, #edeae3);
}

.cover-title span {
  color: #ff3b1f;
}

.cover-subject {
  margin: 0;
  font-size: clamp(1.2rem, 2.6vw, 1.5rem);
  font-weight: 500;
  color: rgb(237 234 227 / 0.9);
  max-width: 30rem;
}

.cover-line {
  width: 5rem;
  height: 3px;
  background: #ff3b1f;
  margin: 0.5rem 0 0.15rem;
  transform-origin: left center;
}

.cover-student {
  margin: 0;
  font-family: var(--font-display, Syne, sans-serif);
  font-size: clamp(1.4rem, 3vw, 1.75rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--bone, #edeae3);
}

.cover-bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: end;
  justify-content: space-between;
  gap: 1.25rem;
  border-top: 1px solid rgb(237 234 227 / 0.14);
  padding-top: 1.25rem;
}

.cover-credits p {
  margin: 0;
  font-family: var(--font-body, "IBM Plex Sans", sans-serif);
  font-size: 1rem;
  color: rgb(237 234 227 / 0.82);
  line-height: 1.55;
}

.cover-credits strong {
  color: var(--bone, #edeae3);
  margin-right: 0.35rem;
}

.cover-start {
  display: inline-flex;
  align-items: center;
  gap: 0.85rem;
  min-height: 3.75rem;
  padding: 0.85rem 1.4rem 0.85rem 1.6rem;
  border: 0;
  background: #ff3b1f;
  color: #fff;
  font-family: var(--font-display, Syne, sans-serif);
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  cursor: pointer;
  position: relative;
  overflow: hidden;
  transition: transform 220ms cubic-bezier(0.16, 1, 0.3, 1), background 220ms ease;
}

.cover-start::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, transparent 30%, rgb(255 255 255 / 0.22) 50%, transparent 70%);
  transform: translateX(-120%);
  transition: transform 650ms cubic-bezier(0.16, 1, 0.3, 1);
}

.cover-start:hover {
  background: #c92c16;
  transform: translateY(-3px);
}

.cover-start:hover::before {
  transform: translateX(120%);
}

.cover-start-icon {
  display: grid;
  place-items: center;
  width: 2rem;
  height: 2rem;
  background: rgb(0 0 0 / 0.18);
}

.cover-start-icon svg {
  width: 1.1rem;
  height: 1.1rem;
}

.cover-piece {
  will-change: transform, opacity;
}

body.site-locked .site-chrome {
  filter: blur(8px);
  transform: scale(1.02);
  pointer-events: none;
}

.hero-enter {
  opacity: 0;
  transform: translateY(28px);
}

@keyframes orbDrift {
  from { transform: translate3d(0, 0, 0) scale(1); }
  to { transform: translate3d(-4%, 6%, 0) scale(1.08); }
}

:root {
  --ink: #0b0d0c;
  --ink-soft: #1a1d1b;
  --bone: #edeae3;
  --bone-deep: #e2ddd3;
  --paper: #f7f4ee;
  --signal: #ff3b1f;
  --signal-deep: #c92c16;
  --teal: #1fa89a;
  --teal-deep: #147a70;
  --muted: #5c635e;
  --line: rgb(11 13 12 / 0.14);
  --line-strong: rgb(11 13 12 / 0.28);
  --font-display: "Syne", sans-serif;
  --font-body: "IBM Plex Sans", system-ui, sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, monospace;
  --max: 1180px;
  --nav-h: 4.25rem;
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--nav-h) + 1rem);
}

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 1.125rem;
  line-height: 1.7;
  color: var(--ink-soft);
  background: var(--paper);
  min-height: 100vh;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  opacity: 0.45;
  background-image:
    radial-gradient(ellipse 80% 50% at 100% 0%, rgb(31 168 154 / 0.09), transparent 55%),
    radial-gradient(ellipse 60% 40% at 0% 100%, rgb(255 59 31 / 0.06), transparent 50%),
    repeating-linear-gradient(
      -12deg,
      transparent,
      transparent 46px,
      rgb(11 13 12 / 0.025) 46px,
      rgb(11 13 12 / 0.025) 47px
    );
}

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

a {
  color: var(--ink);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.2em;
}

a:hover { color: var(--signal-deep); }

:focus-visible {
  outline: 2px solid var(--signal);
  outline-offset: 3px;
}

code {
  font-family: var(--font-mono);
  font-size: 0.92em;
  background: rgb(11 13 12 / 0.9);
  color: #7ee0d4;
  padding: 0.15em 0.4em;
  border: 1px solid rgb(31 168 154 / 0.55);
  border-radius: 2px;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.container {
  width: min(100% - 2rem, var(--max));
  margin-inline: auto;
}

/* ——— Nav ——— */
.site-header {
  position: sticky;
  top: 0;
  z-index: 60;
  height: var(--nav-h);
  background: rgb(11 13 12 / 0.92);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid rgb(237 234 227 / 0.12);
}

.nav {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.brand {
  display: inline-flex;
  align-items: baseline;
  gap: 0.65rem;
  text-decoration: none;
  color: var(--bone);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: -0.02em;
}

.nav-links {
  display: none;
  list-style: none;
  margin: 0;
  padding: 0;
  gap: 0.15rem;
}

.nav-links a {
  display: inline-block;
  padding: 0.45rem 0.7rem;
  color: rgb(237 234 227 / 0.88);
  text-decoration: none;
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: 0.01em;
  border-bottom: 2px solid transparent;
  transition: color 200ms var(--ease), border-color 200ms var(--ease);
  cursor: pointer;
}

.nav-links a:hover,
.nav-links a[aria-current="true"] {
  color: var(--bone);
  border-bottom-color: var(--signal);
}

.nav-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.75rem;
  height: 2.75rem;
  border: 1px solid rgb(237 234 227 / 0.25);
  background: transparent;
  color: var(--bone);
  cursor: pointer;
}

.nav-toggle svg { width: 1.25rem; height: 1.25rem; }

@media (max-width: 767px) {
  .nav-links.is-open {
    display: flex;
    position: absolute;
    top: var(--nav-h);
    left: 0;
    right: 0;
    flex-direction: column;
    padding: 1rem;
    background: var(--ink);
    border-bottom: 1px solid rgb(237 234 227 / 0.12);
  }
}

@media (min-width: 768px) {
  .nav-toggle { display: none; }
  .nav-links { display: flex; }
}

/* ——— Hero ——— */
.hero {
  position: relative;
  min-height: calc(100vh - var(--nav-h));
  display: grid;
  align-items: end;
  padding: 3.5rem 0 4rem;
  background:
    linear-gradient(165deg, #0b0d0c 0%, #141816 55%, #0f1a18 100%);
  color: var(--bone);
  overflow: hidden;
}

.hero::before {
  content: "KDD";
  position: absolute;
  right: -4%;
  bottom: -8%;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(8rem, 28vw, 22rem);
  line-height: 0.8;
  letter-spacing: -0.06em;
  color: rgb(237 234 227 / 0.04);
  pointer-events: none;
  user-select: none;
  transform: translate3d(0, var(--hero-shift, 0px), 0);
}

.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, transparent 0 48%, rgb(255 59 31 / 0.08) 48% 48.15%, transparent 48.15%),
    radial-gradient(circle at 78% 28%, rgb(31 168 154 / 0.22), transparent 32%);
  pointer-events: none;
}

.hero .container {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 2rem;
}

@media (min-width: 900px) {
  .hero .container {
    grid-template-columns: 1.35fr 0.65fr;
    align-items: end;
    gap: 3rem;
  }
}

.hero-eyebrow {
  margin: 0 0 1.25rem;
  font-family: var(--font-body);
  font-size: 1.05rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--teal);
}

.hero-brand {
  margin: 0 0 0.35rem;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(3.2rem, 11vw, 7.5rem);
  line-height: 0.88;
  letter-spacing: -0.055em;
  color: var(--bone);
  max-width: 10ch;
}

.hero-brand span {
  display: block;
  color: var(--signal);
}

.hero h1 {
  margin: 1.25rem 0 0;
  font-family: var(--font-body);
  font-weight: 500;
  font-size: clamp(1.25rem, 2.4vw, 1.55rem);
  line-height: 1.4;
  color: rgb(237 234 227 / 0.92);
  max-width: 30rem;
}

.hero-lead {
  display: none;
}

.hero-side {
  display: grid;
  gap: 1.35rem;
  padding: 1.5rem 1.35rem 1.35rem;
  border: 1px solid rgb(237 234 227 / 0.2);
  background:
    linear-gradient(160deg, rgb(255 59 31 / 0.12), transparent 45%),
    rgb(16 19 18 / 0.85);
  align-self: end;
}

.hero-side-lead {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1.25rem, 2.4vw, 1.55rem);
  font-weight: 700;
  line-height: 1.3;
  letter-spacing: -0.02em;
  color: #fff;
  max-width: none;
}

.hero-side-lead strong {
  color: #ff6b57;
}

.hero-side-lead code {
  display: inline-block;
  margin-top: 0.35rem;
  font-size: 0.95rem;
  font-weight: 500;
  color: #9ff0e6;
  background: #0b0d0c;
  border: 1px solid #1fa89a;
  padding: 0.25em 0.5em;
}

.hero-side-sub {
  margin: 0;
  font-size: 1.12rem;
  font-weight: 500;
  line-height: 1.45;
  color: rgb(237 234 227 / 0.92);
  max-width: none;
}

.hero-side p {
  margin: 0;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 3.1rem;
  padding: 0.75rem 1.35rem;
  border: 1px solid transparent;
  font-family: var(--font-body);
  font-size: 1.05rem;
  font-weight: 700;
  text-decoration: none;
  cursor: pointer;
  transition: transform 200ms var(--ease), background 200ms var(--ease), color 200ms var(--ease), border-color 200ms var(--ease);
}

.btn:hover { transform: translateY(-2px); }

.btn-primary {
  background: var(--signal);
  color: #fff;
}

.btn-primary:hover {
  background: var(--signal-deep);
  color: #fff;
}

.btn-secondary {
  background: transparent;
  color: var(--bone);
  border-color: rgb(237 234 227 / 0.35);
}

.btn-secondary:hover {
  border-color: var(--bone);
  color: var(--bone);
}

.hero-meta {
  display: grid;
  gap: 0.7rem;
  margin: 0;
  padding: 0;
  list-style: none;
  font-family: var(--font-body);
  font-size: 1.05rem;
  color: #fff;
  border-top: 1px solid rgb(237 234 227 / 0.22);
  padding-top: 1rem;
}

.hero-meta strong {
  color: var(--teal);
  font-weight: 700;
  margin-right: 0.35rem;
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.75rem;
  margin-top: 0.5rem;
}

.hero-stat {
  padding-top: 0.75rem;
  border-top: 2px solid var(--signal);
}

.hero-stat b {
  display: block;
  font-family: var(--font-display);
  font-size: clamp(2.1rem, 4vw, 2.6rem);
  font-weight: 800;
  color: #fff;
  letter-spacing: -0.03em;
  line-height: 1;
}

.hero-stat span {
  display: block;
  margin-top: 0.45rem;
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 600;
  color: rgb(237 234 227 / 0.88);
}

/* ——— Sections ——— */
.section {
  padding: 5rem 0;
  position: relative;
}

.section-header {
  margin-bottom: 3rem;
  display: grid;
  gap: 1rem;
  max-width: 40rem;
}

.section-kicker {
  margin: 0;
  font-family: var(--font-body);
  font-size: 1.05rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--signal);
  font-weight: 700;
}

.panel-subtitle {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--bone);
}

.section-header h2 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2.4rem, 6vw, 4.25rem);
  line-height: 0.95;
  letter-spacing: -0.045em;
  color: var(--ink);
}

.section-header p {
  margin: 0;
  font-size: 1.05rem;
  max-width: 36rem;
}

.chapter-num {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(5rem, 14vw, 9rem);
  line-height: 0.8;
  letter-spacing: -0.06em;
  color: rgb(11 13 12 / 0.06);
  margin: 0;
  user-select: none;
}

/* Theory */
.theory-layout {
  display: grid;
  gap: 2rem;
}

@media (min-width: 980px) {
  .theory-layout {
    grid-template-columns: 15rem minmax(0, 1fr);
    gap: 3rem;
    align-items: start;
  }
}

.toc {
  position: sticky;
  top: calc(var(--nav-h) + 1rem);
  padding: 0;
  background: transparent;
  border: 0;
}

.toc h3 {
  margin: 0 0 1rem;
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--ink);
}

.toc ol {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0;
  border-top: 1px solid var(--line);
}

.toc li {
  border-bottom: 1px solid var(--line);
}

.toc a {
  display: flex;
  gap: 0.75rem;
  align-items: baseline;
  padding: 0.75rem 0;
  text-decoration: none;
  font-size: 1rem;
  font-weight: 500;
  color: var(--ink-soft);
  transition: color 180ms var(--ease), padding-left 180ms var(--ease);
}

.toc a:hover {
  color: var(--ink);
  padding-left: 0.35rem;
}

.toc a::before {
  content: attr(data-n);
  font-family: var(--font-mono);
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--signal);
  min-width: 1.4rem;
}

.theory-content {
  display: grid;
  gap: 0;
  border-top: 1px solid var(--line-strong);
}

.topic {
  padding: 2.25rem 0;
  background: transparent;
  border: 0;
  border-bottom: 1px solid var(--line);
  box-shadow: none;
  display: grid;
  gap: 1rem;
}

@media (min-width: 800px) {
  .topic {
    grid-template-columns: 1fr 1.4fr;
    gap: 2rem;
    align-items: start;
  }
}

.topic h3 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.35rem, 2.5vw, 1.75rem);
  line-height: 1.15;
  letter-spacing: -0.03em;
  color: var(--ink);
}

.topic-body p,
.topic-body li {
  margin-top: 0;
}

.topic-body p + p,
.topic-body ul + p,
.topic-body ol + p,
.topic-body .quote + p,
.topic-body .stages + p,
.topic-body .table-wrap + p {
  margin-top: 0.95rem;
}

.topic-body ul,
.topic-body ol {
  margin: 0.55rem 0 0;
  padding-left: 1.15rem;
}

.topic-body li + li { margin-top: 0.3rem; }

.quote {
  margin: 1rem 0;
  padding: 1.1rem 0 1.1rem 1.1rem;
  border-left: 3px solid var(--signal);
  background: transparent;
  border-radius: 0;
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-style: italic;
  line-height: 1.4;
  color: var(--ink);
}

.quote cite {
  display: block;
  margin-top: 0.65rem;
  font-family: var(--font-body);
  font-style: normal;
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--muted);
}

.stages {
  display: grid;
  gap: 0;
  margin-top: 1rem;
  border-top: 1px solid var(--line);
}

.stage {
  display: grid;
  grid-template-columns: 2.5rem 1fr;
  gap: 0.85rem;
  align-items: start;
  padding: 1rem 0;
  border-bottom: 1px solid var(--line);
  background: transparent;
}

.stage-num {
  width: 2.4rem;
  height: 2.4rem;
  border-radius: 0;
  display: grid;
  place-items: center;
  background: var(--ink);
  color: var(--bone);
  font-family: var(--font-mono);
  font-size: 0.95rem;
  font-weight: 700;
}

.stage h4 {
  margin: 0 0 0.2rem;
  font-family: var(--font-display);
  font-size: 1.2rem;
  color: var(--ink);
}

.stage p {
  margin: 0;
  font-size: 1.05rem;
}

.correlation-table,
.data-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 0.5rem;
  font-size: 0.9rem;
}

.correlation-table th,
.correlation-table td,
.data-table th,
.data-table td {
  border: 1px solid var(--line);
  padding: 0.7rem 0.75rem;
  text-align: left;
  vertical-align: top;
}

.correlation-table th,
.data-table th {
  background: var(--ink);
  color: var(--bone);
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 700;
}

.table-wrap {
  overflow-x: auto;
  margin-top: 0.75rem;
}

/* Results — dark lab band */
.results-band {
  background:
    linear-gradient(180deg, #0b0d0c 0%, #121514 100%);
  color: rgb(237 234 227 / 0.88);
}

.results-band .section-header h2,
.results-band .panel h3,
.results-band .kpi-value,
.results-band .cluster h4,
.results-band .timeline strong,
.results-band code {
  color: #9ff0e6;
  background: #0b0d0c;
  border-color: rgb(31 168 154 / 0.55);
}

.results-band .section-header p,
.results-band .panel-note,
.results-band .kpi-hint {
  color: rgb(237 234 227 / 0.82);
}

.results-band .kpi-label {
  color: rgb(237 234 227 / 0.92);
}

.results-band .chapter-num {
  color: rgb(237 234 227 / 0.06);
}


.kpi-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin-bottom: 2rem;
  background: rgb(237 234 227 / 0.12);
  border: 1px solid rgb(237 234 227 / 0.12);
}

@media (min-width: 768px) {
  .kpi-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

.kpi {
  padding: 1.35rem 1.2rem 1.5rem;
  background: #101312;
  border: 0;
  box-shadow: none;
  border-radius: 0;
}

.kpi-label {
  margin: 0;
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 700;
  color: rgb(237 234 227 / 0.9);
}

.kpi-value {
  margin: 0.55rem 0 0;
  font-family: var(--font-display);
  font-size: clamp(2.2rem, 4vw, 3rem);
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 1;
}

.kpi-hint {
  margin: 0.45rem 0 0;
  font-size: 1rem;
  color: rgb(237 234 227 / 0.75);
}

.panel-grid {
  display: grid;
  gap: 1px;
  background: rgb(237 234 227 / 0.12);
  border: 1px solid rgb(237 234 227 / 0.12);
}

@media (min-width: 900px) {
  .panel-grid.two {
    grid-template-columns: 1fr 1fr;
  }
}

.panel {
  padding: 1.5rem;
  background: #101312;
  border: 0;
  border-radius: 0;
  box-shadow: none;
}

.panel h3 {
  margin: 0 0 0.45rem;
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -0.03em;
}

.panel-note {
  margin: 0 0 1rem;
  font-size: 1.05rem;
  line-height: 1.6;
  color: rgb(237 234 227 / 0.82);
}

.chart-box {
  position: relative;
  height: 280px;
}

.chart-box.tall { height: 320px; }

.rules {
  display: grid;
  gap: 0.55rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.rules li {
  padding: 0.95rem 1.05rem;
  border-radius: 0;
  background: rgb(237 234 227 / 0.04);
  border-left: 3px solid var(--teal);
  font-family: var(--font-mono);
  font-size: 0.95rem;
  line-height: 1.55;
  color: var(--bone);
}

.cluster-cards {
  display: grid;
  gap: 1px;
  background: rgb(237 234 227 / 0.12);
}

@media (min-width: 768px) {
  .cluster-cards {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.cluster {
  padding: 1.15rem;
  border: 0;
  border-radius: 0;
  background: #0e1110;
}

.cluster h4 {
  margin: 0 0 0.85rem;
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.cluster dl {
  margin: 0;
  display: grid;
  gap: 0.65rem;
}

.cluster dt {
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 700;
  color: rgb(237 234 227 / 0.75);
}

.cluster dd {
  margin: 0.15rem 0 0;
  font-size: 1.05rem;
  color: var(--bone);
  font-weight: 600;
}

.timeline {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0;
  border-top: 1px solid rgb(237 234 227 / 0.12);
}

.timeline li {
  display: grid;
  grid-template-columns: 3.6rem 1fr;
  gap: 1rem;
  align-items: start;
  padding: 0.9rem 0;
  border-bottom: 1px solid rgb(237 234 227 / 0.12);
}

.phase-badge {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--ink);
  background: var(--teal);
  border-radius: 0;
  text-align: center;
  padding: 0.45rem 0.35rem;
}

.timeline strong {
  display: block;
  margin-bottom: 0.15rem;
  font-family: var(--font-display);
}

.tools-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin: 0.75rem 0 0;
  padding: 0;
  list-style: none;
}

.tools-list li {
  padding: 0.5rem 0.8rem;
  border-radius: 0;
  background: transparent;
  border: 1px solid rgb(237 234 227 / 0.28);
  font-family: var(--font-body);
  font-size: 0.98rem;
  color: var(--bone);
  font-weight: 600;
}

.results-band .data-table th {
  background: var(--signal);
  color: #fff;
  border-color: rgb(255 255 255 / 0.15);
}

.results-band .data-table td {
  border-color: rgb(237 234 227 / 0.12);
  color: var(--bone);
}

.results-band .section-kicker,
.results-band .panel-subtitle {
  color: var(--teal);
}

.dashboard-block {
  margin-top: 1px;
}

.er-diagram {
  margin: 1rem 0 0;
  padding: 1rem;
  background: #0b0d0c;
  border: 1px solid rgb(237 234 227 / 0.14);
  overflow-x: auto;
}

.er-diagram svg {
  width: 100%;
  min-width: 640px;
  height: auto;
  display: block;
}

.er-diagram figcaption {
  margin-top: 0.85rem;
  font-size: 1rem;
  color: rgb(237 234 227 / 0.82);
}

.results-band .er-diagram a,
.results-band a {
  color: #7ee0d4;
}

.results-band a:hover {
  color: #fff;
}

/* References */
.refs-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0;
  border-top: 1px solid var(--line-strong);
}

.refs-list li {
  padding: 1.1rem 0 1.1rem 1.5rem;
  text-indent: -1.5rem;
  background: transparent;
  border: 0;
  border-bottom: 1px solid var(--line);
  border-radius: 0;
  font-size: 1.05rem;
  color: var(--ink-soft);
}

.site-footer {
  padding: 2.5rem 0;
  background: var(--ink);
  color: rgb(237 234 227 / 0.82);
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 500;
}

.site-footer p { margin: 0; }

/* Motion */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  will-change: transform, opacity;
}

.reveal.is-visible {
  opacity: 1;
  transform: none;
}

.site-header {
  transition: transform 700ms var(--ease), opacity 700ms var(--ease);
}

body.site-locked .site-header {
  transform: translateY(-100%);
  opacity: 0;
}

.kpi,
.panel,
.cluster,
.topic {
  transition: transform 280ms var(--ease), border-color 280ms var(--ease), background 280ms var(--ease);
}

.kpi:hover,
.panel:hover {
  transform: translateY(-3px);
}

.topic:hover h3 {
  color: var(--signal-deep);
}

.chapter-num {
  transition: transform 0.1s linear;
}

.cover-start:disabled {
  opacity: 0.7;
  cursor: wait;
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }

  .reveal,
  .hero-enter,
  .cover-piece {
    opacity: 1 !important;
    transform: none !important;
    animation: none !important;
  }

  .cover-orb-a,
  .cover-orb-b {
    animation: none;
  }

  body.site-locked .site-chrome {
    filter: none;
    transform: none;
  }

  .btn:hover,
  .kpi:hover,
  .panel:hover,
  .cover-start:hover {
    transform: none;
  }

  .hero::before { transform: none; }
}