:root {
  --ink-950: #101829;
  --ink-900: #172238;
  --ink-800: #273653;
  --ink-700: #40516f;
  --ink-500: #71819c;
  --ink-300: #c5cfde;
  --ink-200: #e2e8f1;
  --ink-100: #eff3f8;
  --paper: #f6f8fc;
  --white: #ffffff;
  --indigo: #5f5cf1;
  --indigo-dark: #4845d2;
  --indigo-soft: #eeefff;
  --cyan: #15a9b2;
  --cyan-soft: #e5f8f7;
  --amber: #e09c2f;
  --amber-soft: #fff5df;
  --green: #28a873;
  --green-soft: #e7f8ef;
  --red: #df6565;
  --shadow-sm: 0 2px 8px rgba(20, 35, 65, 0.06);
  --shadow-md: 0 14px 35px rgba(20, 35, 65, 0.08);
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 22px;
  --max-width: 1240px;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--ink-950);
  background: var(--paper);
  font-synthesis: none;
  text-rendering: optimizeLegibility;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 106px;
}

body {
  min-width: 0;
  margin: 0;
  background: var(--paper);
  color: var(--ink-950);
  line-height: 1.5;
}

button,
select {
  font: inherit;
}

button,
a,
select {
  -webkit-tap-highlight-color: transparent;
}

a {
  color: inherit;
}

button {
  border: 0;
}

:focus-visible {
  outline: 3px solid rgba(95, 92, 241, 0.46);
  outline-offset: 3px;
}

.skip-link {
  position: fixed;
  z-index: 100;
  top: 12px;
  left: 12px;
  padding: 10px 14px;
  border-radius: 8px;
  background: var(--ink-950);
  color: var(--white);
  transform: translateY(-150%);
  transition: transform 160ms ease;
}

.skip-link:focus {
  transform: translateY(0);
}

.site-header {
  position: sticky;
  z-index: 20;
  top: 0;
  border-bottom: 1px solid rgba(226, 232, 241, 0.9);
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(16px);
}

.header-inner,
.section-shell,
.container,
.footer-inner {
  width: min(calc(100% - 48px), var(--max-width));
  margin-inline: auto;
}

.header-inner {
  display: flex;
  min-height: 74px;
  align-items: center;
  justify-content: space-between;
  gap: 26px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  color: var(--ink-950);
  text-decoration: none;
}

.brand-mark {
  display: grid;
  width: 38px;
  height: 38px;
  place-items: center;
  border-radius: 11px;
  background: var(--ink-950);
  color: var(--white);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: -0.04em;
}

.brand-copy {
  display: grid;
  gap: 1px;
}

.brand-copy strong {
  font-size: 14px;
  letter-spacing: -0.01em;
}

.brand-copy small {
  color: var(--ink-500);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 30px;
  margin-left: auto;
}

.main-nav { scrollbar-width: none; }
.main-nav::-webkit-scrollbar { display: none; }

.nav-link {
  position: relative;
  padding: 28px 0 25px;
  color: var(--ink-500);
  font-size: 13px;
  font-weight: 700;
  text-decoration: none;
  transition: color 160ms ease;
}

.nav-link::after {
  position: absolute;
  right: 0;
  bottom: -1px;
  left: 0;
  height: 2px;
  border-radius: 2px;
  background: var(--indigo);
  content: "";
  opacity: 0;
  transform: scaleX(0.4);
  transition: opacity 160ms ease, transform 160ms ease;
}

.nav-link:hover,
.nav-link.is-active {
  color: var(--indigo);
}

.nav-link.is-active::after {
  opacity: 1;
  transform: scaleX(1);
}

.header-status {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--ink-500);
  font-size: 11px;
  font-weight: 600;
  white-space: nowrap;
}

.status-dot,
.pulse-dot {
  display: inline-block;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 0 4px var(--green-soft);
}

.hero-section {
  display: grid;
  min-height: 500px;
  grid-template-columns: minmax(0, 1.35fr) minmax(360px, 0.8fr);
  align-items: center;
  gap: clamp(50px, 9vw, 130px);
  padding-top: 80px;
  padding-bottom: 82px;
}

.eyebrow,
.card-label,
.panel-kicker {
  margin: 0;
  color: var(--indigo);
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 0.13em;
  line-height: 1.3;
  text-transform: uppercase;
}

.eyebrow {
  display: flex;
  align-items: center;
  gap: 9px;
}

.eyebrow-line {
  display: inline-block;
  width: 24px;
  height: 2px;
  border-radius: 2px;
  background: var(--indigo);
}

.hero-content h1,
.section-heading h2,
.validation-copy h2 {
  margin: 20px 0 18px;
  font-size: clamp(42px, 5.5vw, 72px);
  font-weight: 800;
  letter-spacing: -0.065em;
  line-height: 0.98;
}

.hero-content h1 span,
.section-heading h2 span {
  color: var(--indigo);
}

.hero-lede {
  max-width: 520px;
  margin: 0;
  color: var(--ink-700);
  font-size: 16px;
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 31px;
}

.button {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 11px 18px;
  border-radius: 9px;
  cursor: pointer;
  font-size: 12px;
  font-weight: 800;
  text-decoration: none;
  transition: background 160ms ease, box-shadow 160ms ease, transform 160ms ease;
}

.button:hover {
  transform: translateY(-1px);
}

.button-primary {
  background: var(--indigo);
  box-shadow: 0 7px 16px rgba(95, 92, 241, 0.2);
  color: var(--white);
}

.button-primary:hover {
  background: var(--indigo-dark);
  box-shadow: 0 10px 20px rgba(95, 92, 241, 0.28);
}

.button-ghost {
  color: var(--ink-700);
}

.button-ghost:hover {
  background: var(--white);
  color: var(--indigo);
}

.rap-card {
  position: relative;
  overflow: hidden;
  min-height: 286px;
  padding: 29px 31px 24px;
  border: 1px solid rgba(95, 92, 241, 0.17);
  border-radius: var(--radius-lg);
  background: var(--white);
  box-shadow: var(--shadow-md);
}

.rap-card::before {
  position: absolute;
  top: -88px;
  right: -86px;
  width: 210px;
  height: 210px;
  border: 36px solid var(--indigo-soft);
  border-radius: 50%;
  content: "";
}

.rap-card-topline,
.rap-card-footer,
.meter-labels,
.column-header,
.panel-heading,
.kanban-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.rap-kicker {
  color: var(--indigo);
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.rap-code {
  padding: 5px 8px;
  border-radius: 5px;
  background: var(--indigo-soft);
  color: var(--indigo);
  font-size: 10px;
  font-weight: 800;
}

.rap-card h2 {
  position: relative;
  max-width: 365px;
  margin: 27px 0 20px;
  font-size: 23px;
  letter-spacing: -0.04em;
  line-height: 1.15;
}

.quote-mark {
  position: absolute;
  top: 110px;
  right: 20px;
  color: var(--indigo-soft);
  font-family: Georgia, serif;
  font-size: 100px;
  font-weight: 800;
  line-height: 1;
}

.rap-card blockquote {
  position: relative;
  max-width: 350px;
  margin: 0;
  padding-left: 13px;
  border-left: 2px solid var(--indigo);
  color: var(--ink-700);
  font-size: 13px;
  font-style: italic;
  line-height: 1.55;
}

.rap-card-footer {
  position: absolute;
  right: 31px;
  bottom: 24px;
  left: 31px;
  justify-content: flex-start;
  gap: 10px;
  color: var(--ink-500);
  font-size: 11px;
  font-weight: 700;
}

.concept-section,
.simulator-section,
.validation-section {
  padding-top: 84px;
  padding-bottom: 84px;
}

.concept-section {
  border-top: 1px solid var(--ink-200);
}

.section-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 40px;
  margin-bottom: 37px;
}

.section-heading h2,
.validation-copy h2 {
  margin-bottom: 0;
  font-size: clamp(33px, 4vw, 51px);
}

.section-intro {
  max-width: 370px;
  margin: 0 2px 4px 0;
  color: var(--ink-500);
  font-size: 13px;
  line-height: 1.65;
}

.road-analogy {
  display: grid;
  grid-template-columns: 1fr 48px 1fr;
  align-items: center;
  gap: 17px;
}

.method-card {
  position: relative;
  min-height: 334px;
  padding: 27px 28px 25px;
  border: 1px solid var(--ink-200);
  border-radius: var(--radius-md);
  background: var(--white);
  box-shadow: var(--shadow-sm);
}

.method-agile {
  border-color: rgba(95, 92, 241, 0.22);
  box-shadow: 0 14px 30px rgba(95, 92, 241, 0.1);
}

.method-card-header {
  display: flex;
  align-items: center;
  gap: 14px;
}

.method-icon {
  display: grid;
  width: 43px;
  height: 43px;
  place-items: center;
  border-radius: 12px;
  font-size: 24px;
  font-weight: 800;
}

.waterfall-icon {
  background: var(--ink-100);
  color: var(--ink-700);
}

.agile-icon {
  background: var(--indigo-soft);
  color: var(--indigo);
}

.method-card h3 {
  margin: 4px 0 0;
  font-size: 19px;
  letter-spacing: -0.035em;
}

.method-card h3 span {
  color: var(--ink-500);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0;
}

.method-description {
  max-width: 460px;
  min-height: 45px;
  margin: 22px 0 20px;
  color: var(--ink-700);
  font-size: 13px;
  line-height: 1.6;
}

.journey {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 12px 12px 14px;
  border-radius: 8px;
  background: var(--paper);
}

.journey-point {
  display: inline-flex;
  min-width: max-content;
  align-items: center;
  gap: 5px;
  color: var(--ink-500);
  font-size: 9px;
  font-weight: 700;
}

.journey-point::before {
  width: 6px;
  height: 6px;
  border: 2px solid var(--ink-300);
  border-radius: 50%;
  background: var(--white);
  content: "";
}

.journey-point.is-start::before {
  border-color: var(--ink-700);
  background: var(--ink-700);
}

.journey-point.is-end::before {
  border-color: var(--indigo);
  background: var(--indigo);
}

.journey-line {
  width: 100%;
  height: 1px;
  background: var(--ink-300);
}

.journey-agile .journey-line:nth-of-type(2) {
  background: repeating-linear-gradient(90deg, var(--indigo) 0 5px, transparent 5px 9px);
}

.method-list {
  display: grid;
  gap: 9px;
  margin: 20px 0 0;
  padding: 0;
  list-style: none;
}

.method-list li {
  display: flex;
  gap: 8px;
  color: var(--ink-500);
  font-size: 11px;
}

.method-list li span {
  color: var(--red);
  font-size: 15px;
  font-weight: 800;
  line-height: 1;
}

.method-agile .method-list li span {
  color: var(--green);
}

.method-tag {
  position: absolute;
  right: 28px;
  bottom: 25px;
  padding: 4px 8px;
  border-radius: 5px;
  font-size: 9px;
  font-weight: 800;
}

.tag-neutral {
  background: var(--ink-100);
  color: var(--ink-500);
}

.tag-agile {
  background: var(--indigo-soft);
  color: var(--indigo);
}

.versus {
  display: grid;
  width: 38px;
  height: 38px;
  place-items: center;
  border: 1px solid var(--ink-200);
  border-radius: 50%;
  background: var(--paper);
  color: var(--ink-500);
  font-size: 10px;
  font-weight: 800;
}

.principle-strip {
  display: flex;
  align-items: center;
  gap: 17px;
  margin-top: 28px;
  padding: 17px 20px;
  border: 1px solid rgba(95, 92, 241, 0.18);
  border-radius: 9px;
  background: var(--indigo-soft);
}

.principle-number {
  color: var(--indigo);
  font-size: 11px;
  font-weight: 900;
}

.principle-strip p {
  flex: 1;
  margin: 0;
  color: var(--ink-700);
  font-size: 12px;
}

.principle-strip strong {
  color: var(--ink-950);
}

.principle-arrow {
  color: var(--indigo);
  font-size: 19px;
  font-weight: 800;
}

.simulator-section {
  border-top: 1px solid var(--ink-200);
}

.simulator-heading {
  align-items: center;
  margin-bottom: 24px;
}

.capacity-control {
  display: grid;
  grid-template-columns: auto auto;
  align-items: center;
  gap: 5px 10px;
}

.capacity-control label {
  color: var(--ink-700);
  font-size: 11px;
  font-weight: 800;
}

.capacity-control select {
  min-width: 106px;
  padding: 9px 28px 9px 10px;
  border: 1px solid var(--ink-200);
  border-radius: 7px;
  outline: 0;
  background: var(--white);
  color: var(--ink-900);
  cursor: pointer;
  font-size: 11px;
  font-weight: 800;
}

.capacity-control select:focus {
  border-color: var(--indigo);
  box-shadow: 0 0 0 3px var(--indigo-soft);
}

.capacity-control small {
  grid-column: 1 / -1;
  color: var(--ink-500);
  font-size: 10px;
}

.learning-callout {
  display: flex;
  align-items: center;
  gap: 13px;
  margin-bottom: 24px;
  padding: 13px 17px;
  border-left: 3px solid var(--indigo);
  border-radius: 0 8px 8px 0;
  background: var(--white);
  box-shadow: var(--shadow-sm);
}

.callout-icon {
  color: var(--indigo);
  font-size: 17px;
}

.learning-callout p {
  flex: 1;
  margin: 0;
  color: var(--ink-700);
  font-size: 12px;
}

.learning-callout strong {
  color: var(--ink-950);
}

.callout-hint {
  color: var(--ink-500);
  font-size: 10px;
  font-style: italic;
  white-space: nowrap;
}

.planner-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(0, 1.08fr);
  gap: 17px;
  align-items: stretch;
}

.panel {
  border: 1px solid var(--ink-200);
  border-radius: var(--radius-md);
  background: var(--white);
  box-shadow: var(--shadow-sm);
}

.backlog-panel,
.sprint-panel {
  padding: 24px;
}

.panel-heading {
  align-items: start;
}

.panel-kicker {
  margin-bottom: 5px;
  color: var(--ink-500);
  font-size: 9px;
}

.panel h3 {
  margin: 0;
  color: var(--ink-950);
  font-size: 17px;
  letter-spacing: -0.035em;
}

.count-badge,
.column-count {
  display: inline-grid;
  min-width: 24px;
  height: 24px;
  place-items: center;
  border-radius: 7px;
  background: var(--ink-100);
  color: var(--ink-500);
  font-size: 10px;
  font-weight: 900;
}

.count-badge-accent {
  background: var(--indigo-soft);
  color: var(--indigo);
}

.panel-description {
  margin: 6px 0 15px;
  color: var(--ink-500);
  font-size: 11px;
}

.priority-legend,
.kanban-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  color: var(--ink-500);
  font-size: 10px;
  font-weight: 700;
}

.priority-legend {
  margin-bottom: 13px;
}

.priority-legend span,
.kanban-legend span {
  display: inline-flex;
  align-items: center;
  gap: 5px;
}

.priority-dot,
.column-dot {
  display: inline-block;
  width: 7px;
  height: 7px;
  border-radius: 50%;
}

.priority-high {
  background: var(--red);
}

.priority-medium {
  background: var(--amber);
}

.priority-low {
  background: var(--ink-300);
}

.todo-dot {
  background: var(--ink-300);
}

.progress-dot {
  background: var(--amber);
}

.done-dot {
  background: var(--green);
}

.story-list {
  display: grid;
  min-height: 225px;
  align-content: start;
  gap: 9px;
  padding: 1px;
  border-radius: 9px;
  transition: background 160ms ease, box-shadow 160ms ease;
}

.story-list.drag-over,
.column-body.drag-over {
  background: var(--indigo-soft);
  box-shadow: inset 0 0 0 2px rgba(95, 92, 241, 0.38);
}

.story-card {
  position: relative;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: start;
  gap: 10px;
  padding: 12px 12px 11px;
  border: 1px solid var(--ink-200);
  border-left: 3px solid var(--ink-300);
  border-radius: 8px;
  background: var(--white);
  box-shadow: 0 2px 4px rgba(20, 35, 65, 0.04);
  cursor: grab;
  transition: border-color 160ms ease, box-shadow 160ms ease, opacity 160ms ease, transform 160ms ease;
}

.story-card:hover {
  border-color: var(--indigo);
  box-shadow: 0 5px 13px rgba(20, 35, 65, 0.09);
  transform: translateY(-1px);
}

.story-card:active {
  cursor: grabbing;
}

.story-card.is-dragging {
  opacity: 0.42;
}

.story-card.priority-high-card {
  border-left-color: var(--red);
}

.story-card.priority-medium-card {
  border-left-color: var(--amber);
}

.story-card.priority-low-card {
  border-left-color: var(--ink-300);
}

.story-key {
  padding-top: 1px;
  color: var(--indigo);
  font-size: 9px;
  font-weight: 900;
  letter-spacing: 0.03em;
}

.story-content {
  min-width: 0;
}

.story-title {
  margin: 0;
  color: var(--ink-800);
  font-size: 11px;
  font-weight: 700;
  line-height: 1.35;
}

.story-meta {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 6px;
  color: var(--ink-500);
  font-size: 9px;
}

.story-priority {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-weight: 700;
}

.story-points {
  display: inline-grid;
  min-width: 23px;
  height: 23px;
  place-items: center;
  border-radius: 50%;
  background: var(--ink-100);
  color: var(--ink-700);
  font-size: 10px;
  font-weight: 900;
}

.story-actions {
  display: flex;
  align-items: center;
  gap: 4px;
}

.story-card > .story-actions {
  grid-column: 1 / -1;
  justify-content: flex-end;
  margin-top: -2px;
  padding-top: 5px;
  border-top: 1px solid var(--ink-100);
}

.icon-button,
.move-button {
  display: inline-grid;
  min-width: 25px;
  height: 25px;
  place-items: center;
  border-radius: 5px;
  background: transparent;
  color: var(--ink-500);
  cursor: pointer;
  font-size: 14px;
  line-height: 1;
  transition: background 160ms ease, color 160ms ease;
}

.icon-button:hover,
.move-button:hover {
  background: var(--indigo-soft);
  color: var(--indigo);
}

.remove-story:hover {
  background: #fff0f0;
  color: var(--red);
}

.story-card.is-done {
  border-left-color: var(--green);
  background: #fbfffd;
}

.story-card.is-done .story-title {
  color: var(--ink-500);
  text-decoration: line-through;
}

.story-card.is-done .story-points {
  background: var(--green-soft);
  color: var(--green);
}

.drop-placeholder {
  display: grid;
  min-height: 128px;
  align-content: center;
  justify-items: center;
  gap: 5px;
  padding: 18px;
  border: 1px dashed var(--ink-300);
  border-radius: 8px;
  color: var(--ink-500);
  text-align: center;
}

.drop-placeholder strong {
  color: var(--ink-700);
  font-size: 11px;
}

.drop-placeholder small {
  font-size: 9px;
}

.drop-icon {
  display: grid;
  width: 29px;
  height: 29px;
  place-items: center;
  border-radius: 50%;
  background: var(--indigo-soft);
  color: var(--indigo);
  font-size: 19px;
}

.empty-state {
  display: grid;
  min-height: 90px;
  place-items: center;
  gap: 5px;
  padding: 15px;
  color: var(--green);
  font-size: 10px;
  font-weight: 700;
  text-align: center;
}

.empty-state span {
  display: grid;
  width: 27px;
  height: 27px;
  place-items: center;
  border-radius: 50%;
  background: var(--green-soft);
  font-size: 14px;
}

.capacity-meter {
  margin: 20px 0 18px;
}

.meter-labels {
  margin-bottom: 7px;
  color: var(--ink-500);
  font-size: 10px;
  font-weight: 700;
}

.meter-labels strong {
  color: var(--indigo);
  font-size: 11px;
}

.meter-track {
  width: 100%;
  height: 7px;
  overflow: hidden;
  border-radius: 99px;
  background: var(--ink-100);
}

.meter-track span {
  display: block;
  width: 0;
  height: 100%;
  border-radius: inherit;
  background: var(--indigo);
  transition: width 220ms ease, background 220ms ease;
}

.meter-track span.is-over {
  background: var(--red);
}

.sprint-list {
  min-height: 225px;
}

.sprint-footer {
  display: flex;
  align-items: center;
  gap: 7px;
  margin-top: 16px;
  color: var(--ink-500);
  font-size: 10px;
  font-weight: 700;
}

.mini-check {
  display: grid;
  width: 17px;
  height: 17px;
  place-items: center;
  border-radius: 50%;
  background: var(--green-soft);
  color: var(--green);
  font-size: 11px;
}

.kanban-panel {
  margin-top: 17px;
  padding: 24px;
}

.kanban-heading {
  align-items: start;
}

.kanban-description {
  margin-top: 5px;
}

.kanban-board {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-top: 18px;
}

.kanban-column {
  min-width: 0;
  overflow: hidden;
  border: 1px solid var(--ink-200);
  border-radius: 9px;
  background: var(--paper);
}

.column-header {
  min-height: 48px;
  padding: 12px 13px;
  border-bottom: 1px solid var(--ink-200);
  background: var(--white);
}

.column-header h4 {
  display: flex;
  align-items: center;
  gap: 7px;
  margin: 0;
  color: var(--ink-800);
  font-size: 11px;
  font-weight: 900;
}

.column-header h4::before {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--ink-300);
  content: "";
}

.column-progress .column-header h4::before {
  background: var(--amber);
}

.column-done .column-header h4::before {
  background: var(--green);
}

.column-body {
  display: grid;
  min-height: 180px;
  align-content: start;
  gap: 8px;
  padding: 10px;
  transition: background 160ms ease, box-shadow 160ms ease;
}

.column-body:empty::after {
  padding: 60px 10px;
  color: var(--ink-300);
  content: "Arrastra aquí";
  font-size: 10px;
  font-weight: 700;
  text-align: center;
}

.column-body .story-card {
  grid-template-columns: auto 1fr auto;
}

.column-body .story-card .story-actions {
  grid-column: 1 / -1;
  justify-content: flex-end;
  margin-top: -2px;
  padding-top: 5px;
  border-top: 1px solid var(--ink-100);
}

.column-body .story-card .move-button {
  width: auto;
  padding-inline: 6px;
  font-size: 10px;
  font-weight: 800;
}

.column-body .story-card .remove-story {
  margin-left: auto;
}

.validation-section {
  padding-top: 10px;
  padding-bottom: 92px;
}

.validation-card {
  display: grid;
  grid-template-columns: 1.05fr 1fr auto;
  align-items: center;
  gap: 30px;
  padding: 33px 36px;
  border: 1px solid rgba(95, 92, 241, 0.24);
  border-radius: var(--radius-md);
  background: var(--ink-950);
  box-shadow: 0 18px 40px rgba(16, 24, 41, 0.16);
}

.validation-copy .eyebrow {
  color: #9d9bff;
}

.validation-copy .eyebrow-line {
  background: #9d9bff;
}

.validation-copy h2 {
  max-width: 390px;
  margin-top: 15px;
  color: var(--white);
  font-size: clamp(28px, 3vw, 39px);
}

.validation-copy > p:last-child {
  max-width: 420px;
  margin: 13px 0 0;
  color: #aab4c8;
  font-size: 12px;
}

.validation-checks {
  display: grid;
  gap: 11px;
  padding: 18px 20px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 9px;
  background: rgba(255, 255, 255, 0.05);
}

.validation-check {
  display: flex;
  align-items: center;
  gap: 9px;
  color: #aab4c8;
  font-size: 11px;
  font-weight: 700;
  transition: color 160ms ease;
}

.check-icon {
  display: grid;
  width: 19px;
  height: 19px;
  place-items: center;
  border: 1px solid #65728b;
  border-radius: 50%;
  color: transparent;
  font-size: 12px;
  transition: background 160ms ease, border-color 160ms ease, color 160ms ease;
}

.validation-check.is-valid {
  color: var(--white);
}

.validation-check.is-valid .check-icon {
  border-color: var(--green);
  background: var(--green);
  color: var(--white);
}

.validate-button {
  min-width: 155px;
  white-space: nowrap;
}

.success-message {
  display: flex;
  grid-column: 1 / -1;
  align-items: center;
  gap: 10px;
  margin: -5px 0 0;
  padding: 12px 14px;
  border: 1px solid rgba(40, 168, 115, 0.45);
  border-radius: 8px;
  background: rgba(40, 168, 115, 0.13);
  color: var(--white);
}

.success-icon {
  display: grid;
  width: 25px;
  height: 25px;
  place-items: center;
  border-radius: 50%;
  background: var(--green);
  font-weight: 900;
}

.success-message div {
  display: grid;
  gap: 1px;
}

.success-message strong {
  font-size: 12px;
}

.success-message span:last-child {
  color: #aee7c9;
  font-size: 10px;
}

.site-footer {
  border-top: 1px solid var(--ink-200);
  background: var(--white);
}

.footer-inner {
  display: flex;
  min-height: 71px;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  color: var(--ink-500);
  font-size: 10px;
  font-weight: 600;
}

.footer-brand {
  color: var(--ink-950);
  font-weight: 900;
}

.footer-brand span {
  color: var(--indigo);
}

.footer-year {
  color: var(--ink-300);
  font-variant-numeric: tabular-nums;
}

.toast {
  position: fixed;
  z-index: 50;
  right: 22px;
  bottom: 22px;
  max-width: min(330px, calc(100% - 44px));
  padding: 12px 15px;
  border: 1px solid var(--ink-200);
  border-radius: 8px;
  background: var(--ink-950);
  box-shadow: var(--shadow-md);
  color: var(--white);
  font-size: 11px;
  font-weight: 700;
  opacity: 0;
  pointer-events: none;
  transform: translateY(10px);
  transition: opacity 180ms ease, transform 180ms ease;
}

.toast.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 980px) {
  .header-status {
    display: none;
  }

  .hero-section {
    gap: 45px;
  }

  .validation-card {
    grid-template-columns: 1fr 1fr;
  }

  .validate-button {
    grid-column: 1 / -1;
    justify-self: start;
  }
}

@media (max-width: 760px) {
  .header-inner,
  .section-shell,
  .container,
  .footer-inner {
    width: min(calc(100% - 32px), var(--max-width));
  }

  .header-inner {
    min-height: 67px;
  }

  html {
    scroll-padding-top: 86px;
  }

  .main-nav {
    gap: 16px;
    overflow-x: auto;
  }

  .nav-link {
    padding: 24px 0 22px;
    font-size: 11px;
    white-space: nowrap;
  }

  .brand-copy small {
    display: none;
  }

  .hero-section {
    display: block;
    padding-top: 58px;
    padding-bottom: 58px;
  }

  .hero-lede {
    font-size: 14px;
  }

  .rap-card {
    min-height: 270px;
    margin-top: 42px;
  }

  .section-heading,
  .simulator-heading {
    display: block;
  }

  .section-intro {
    margin-top: 18px;
  }

  .concept-section,
  .simulator-section,
  .validation-section {
    padding-top: 58px;
    padding-bottom: 58px;
  }

  .road-analogy {
    display: block;
  }

  .method-card {
    min-height: 0;
    padding-bottom: 56px;
  }

  .versus {
    margin: 13px auto;
  }

  .learning-callout {
    align-items: flex-start;
  }

  .callout-hint {
    display: none;
  }

  .capacity-control {
    margin-top: 19px;
  }

  .planner-layout,
  .kanban-board {
    grid-template-columns: 1fr;
  }

  .kanban-legend {
    margin-top: 15px;
  }

  .validation-card {
    display: block;
    padding: 27px 22px;
  }

  .validation-checks {
    margin-top: 23px;
  }

  .validate-button {
    width: 100%;
    margin-top: 17px;
  }

  .success-message {
    margin-top: 17px;
  }

  .footer-inner {
    min-height: 84px;
    flex-wrap: wrap;
    justify-content: center;
    padding: 17px 0;
    text-align: center;
  }
}

@media (max-width: 430px) {
  .brand-mark {
    width: 34px;
    height: 34px;
  }

  .brand-copy strong {
    font-size: 12px;
  }

  .main-nav {
    gap: 13px;
  }

  .hero-actions .button {
    width: 100%;
  }

  .method-card,
  .backlog-panel,
  .sprint-panel,
  .kanban-panel {
    padding-inline: 17px;
  }

  .journey {
    gap: 4px;
    padding-inline: 7px;
  }

  .journey-point {
    font-size: 8px;
  }

  .principle-strip {
    align-items: flex-start;
  }

  .principle-arrow {
    display: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
}

/* ═══════════════════════════════════════════════════════════════
   INSTRUMENTOS DE PLANEACIÓN · GUÍA 4
   ═══════════════════════════════════════════════════════════════ */
.g4-tools-section {
  display: grid;
  gap: 24px;
  padding-top: clamp(3rem, 7vw, 6rem);
  padding-bottom: clamp(3rem, 7vw, 6rem);
}

.g4-handoff {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr) auto minmax(0, 1fr);
  gap: 14px;
  align-items: center;
  padding: 16px;
  border: 1px solid rgba(95, 92, 241, 0.2);
  border-radius: var(--radius-md);
  background: var(--indigo-soft);
}

.g4-handoff div { display: grid; gap: 4px; }
.g4-handoff strong { color: var(--indigo-dark); font-size: 0.84rem; }
.g4-handoff div span { color: var(--ink-700); font-size: 0.82rem; line-height: 1.45; }
.g4-handoff > span { color: var(--indigo); font-size: 1.35rem; }

.g4-instrument-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.g4-instrument-card,
.g4-workshop {
  padding: clamp(18px, 2vw, 26px);
  border: 1px solid var(--ink-200);
  border-radius: var(--radius-lg);
  background: var(--white);
  box-shadow: var(--shadow-sm);
}

.g4-instrument-card { display: flex; flex-direction: column; gap: 12px; }
.g4-instrument-card--done { border-color: rgba(40, 168, 115, 0.35); background: linear-gradient(160deg, var(--green-soft), var(--white) 58%); }
.g4-tool-kicker { color: var(--indigo-dark); font-size: 0.74rem; font-weight: 800; letter-spacing: 0.08em; text-transform: uppercase; }
.g4-instrument-card h3,
.g4-workshop h3 { color: var(--ink-950); font-size: 1.2rem; line-height: 1.2; }
.g4-instrument-card p,
.g4-workshop p { color: var(--ink-700); font-size: 0.9rem; }
.g4-check-list { display: grid; gap: 9px; margin: 0; padding: 0; list-style: none; color: var(--ink-700); font-size: 0.84rem; }
.g4-check-list li { display: grid; grid-template-columns: 20px 1fr; gap: 7px; align-items: start; }
.g4-check-list li span { color: var(--green); font-weight: 900; }
.g4-example-box { display: grid; gap: 9px; padding: 14px; border-left: 3px solid var(--cyan); border-radius: 0 var(--radius-sm) var(--radius-sm) 0; background: var(--cyan-soft); color: var(--ink-700); font-size: 0.82rem; }
.g4-example-box strong { color: var(--ink-950); }

.g4-workshop { display: grid; gap: 16px; border-color: rgba(95, 92, 241, 0.32); background: linear-gradient(140deg, var(--indigo-soft), var(--white) 62%); }
.g4-form-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
.g4-form-grid label { display: grid; gap: 6px; color: var(--ink-700); font-size: 0.8rem; font-weight: 700; }
.g4-form-grid input,
.g4-form-grid textarea,
.g4-form-grid select { width: 100%; min-width: 0; padding: 10px 12px; border: 1px solid var(--ink-200); border-radius: var(--radius-sm); background: var(--white); color: var(--ink-950); font: inherit; resize: vertical; }
.g4-form-grid input:focus,
.g4-form-grid textarea:focus,
.g4-form-grid select:focus { border-color: var(--indigo); outline: 2px solid rgba(95, 92, 241, 0.2); outline-offset: 2px; }
.g4-form-span { grid-column: 1 / -1; }
.g4-form-actions { display: flex; flex-wrap: wrap; gap: 10px; }
.g4-workshop-output { min-height: 190px; padding: 14px; border: 1px dashed var(--ink-300); border-radius: var(--radius-sm); background: var(--ink-100); color: var(--ink-800); font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: 0.78rem; line-height: 1.6; white-space: pre-wrap; overflow-wrap: anywhere; }

/* Lenguaje esencial, secuencia SENA y criterio profesional humano–IA. */
.agile-foundations { display: grid; gap: 18px; margin-top: 32px; padding: clamp(18px, 3vw, 28px); border: 1px solid var(--ink-200); border-radius: var(--radius-md); background: var(--white); }
.agile-foundations-heading h3 { margin: 5px 0 8px; color: var(--ink-950); font-size: clamp(1.2rem, 3vw, 1.6rem); }
.agile-foundations-heading > p:last-child { margin: 0; color: var(--ink-700); }
.agile-term-grid { display: grid; grid-template-columns: 1fr; gap: 10px; }
.agile-term-grid article { min-width: 0; padding: 13px; border: 1px solid var(--ink-200); border-radius: var(--radius-sm); background: var(--paper); }
.agile-term-grid strong, .agile-term-grid p { display: block; overflow-wrap: anywhere; }
.agile-term-grid strong { color: var(--indigo-dark); font-size: 0.84rem; }
.agile-term-grid p { margin: 5px 0 0; color: var(--ink-700); font-size: 0.76rem; line-height: 1.5; }
.planning-truths, .g4-sena-sequence { display: grid; grid-template-columns: 1fr; gap: 10px; }
.planning-truths > div { min-width: 0; padding: 13px; border-left: 3px solid var(--amber); background: var(--amber-soft); }
.planning-truths strong, .planning-truths span { display: block; }
.planning-truths strong { color: #865713; font-size: 0.82rem; }
.planning-truths span { margin-top: 3px; color: var(--ink-700); font-size: 0.74rem; }
.g4-sena-sequence { margin: 0; padding: 0; list-style: none; }
.g4-sena-sequence li { min-width: 0; padding: 13px; border: 1px solid var(--ink-200); border-radius: var(--radius-sm); }
.g4-sena-sequence span, .g4-sena-sequence strong, .g4-sena-sequence small { display: block; overflow-wrap: anywhere; }
.g4-sena-sequence span { color: var(--cyan); font-size: 0.7rem; font-weight: 800; text-transform: uppercase; }
.g4-sena-sequence strong { margin-top: 4px; color: var(--ink-950); font-size: 0.8rem; }
.g4-sena-sequence small { margin-top: 4px; color: var(--ink-700); }
.series-trace { display: grid; gap: 6px; padding: 13px; border-left: 3px solid var(--green); background: var(--green-soft); }
.series-trace strong { color: #176b4b; }
.series-trace code { max-width: 100%; color: var(--ink-900); font-size: clamp(0.65rem, 2vw, 0.78rem); overflow-wrap: anywhere; }
.simulation-boundary { display: grid; gap: 4px; margin: -10px 0 22px; padding: 13px 15px; border-left: 3px solid var(--amber); background: var(--amber-soft); }
.simulation-boundary strong { color: #865713; }
.simulation-boundary span { color: var(--ink-700); font-size: 0.78rem; line-height: 1.5; }
.g4-ai-block { display: grid; gap: 16px; padding: clamp(18px, 2vw, 26px); border: 1px solid rgba(21, 169, 178, 0.32); border-radius: var(--radius-md); background: linear-gradient(140deg, var(--cyan-soft), var(--white) 68%); }
.g4-ai-block h3 { margin: 5px 0 8px; color: var(--ink-950); font-size: 1.2rem; }
.g4-ai-block p { margin: 0; color: var(--ink-700); font-size: 0.84rem; line-height: 1.55; }
.g4-ai-grid { display: grid; grid-template-columns: 1fr; gap: 10px; }
.g4-ai-grid > div { min-width: 0; padding: 13px; border: 1px solid var(--ink-200); border-radius: var(--radius-sm); background: rgba(255, 255, 255, 0.82); }
.g4-ai-grid strong, .g4-ai-grid span { display: block; overflow-wrap: anywhere; }
.g4-ai-grid strong { color: var(--cyan); font-size: 0.8rem; }
.g4-ai-grid span { margin-top: 4px; color: var(--ink-700); font-size: 0.74rem; }
.g4-ai-template { max-width: 100%; margin: 0; padding: 14px; overflow-x: auto; border-radius: var(--radius-sm); background: var(--ink-950); color: #e8edf6; font: 0.74rem/1.6 ui-monospace, SFMono-Regular, Consolas, monospace; white-space: pre-wrap; overflow-wrap: anywhere; }
.g4-deliverable-gate, .g4-rubric { margin: 1rem 0; padding: 1rem; border-radius: 8px; }
.g4-deliverable-gate { display: grid; gap: 5px; border-left: 3px solid var(--green); background: var(--green-soft); color: var(--ink-700); }
.g4-rubric { border: 1px solid var(--ink-200); background: var(--white); color: var(--ink-700); }
.g4-rubric h3 { margin: 0 0 0.6rem; color: var(--ink-950); font-size: 1.05rem; }
.g4-rubric ol { margin: 0; padding-left: 1.25rem; }
.g4-rubric li { margin: 0.35rem 0; }
.rap-card-support { position: relative; max-width: 350px; margin: 10px 0 0; color: var(--ink-700); font-size: 11px; line-height: 1.45; }
.column-limit { margin-left: auto; color: var(--ink-700); font-size: 9px; font-weight: 800; letter-spacing: 0.02em; }
.column-limit + .column-count { margin-left: 7px; }
.g4-deliverable-scope { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; margin: 0 0 1.25rem; }
.g4-scope-card { padding: 1.1rem; border: 1px solid var(--ink-200); border-radius: 10px; background: var(--white); }
.g4-scope-card--now { border-color: rgba(40, 168, 115, 0.4); background: linear-gradient(150deg, var(--green-soft), var(--white) 68%); }
.g4-scope-card--later { border-color: rgba(95, 92, 241, 0.3); background: linear-gradient(150deg, var(--indigo-soft), var(--white) 68%); }
.g4-scope-card h3 { margin: 0.45rem 0 0.55rem; color: var(--ink-950); font-size: 1.06rem; }
.g4-scope-card p { margin: 0 0 0.75rem; color: var(--ink-700); font-size: 0.84rem; line-height: 1.5; }
.g4-scope-card ul { display: grid; gap: 0.45rem; margin: 0; padding-left: 1.1rem; color: var(--ink-700); font-size: 0.82rem; line-height: 1.45; }
.g4-deliverable-note { display: grid; gap: 4px; margin: 0 0 1.25rem; padding: 0.95rem 1rem; border-left: 3px solid var(--amber); border-radius: 0 8px 8px 0; background: var(--amber-soft); color: var(--ink-700); font-size: 0.84rem; line-height: 1.5; }
.g4-deliverable-heading { display: flex; align-items: center; gap: 0.5rem; margin-bottom: 0.75rem; }
.g4-deliverable-heading h3 { margin: 0; color: var(--text-primary, var(--ink-950)); font-size: 1.15rem; }
.g4-deliverable-heading--upload { margin-top: 1.5rem; margin-bottom: 0.5rem; }
.g4-deliverable-list { margin: 0 0 1.5rem; padding-left: 1.5rem; color: var(--text-secondary, var(--ink-700)); line-height: 1.6; }
.g4-deliverable-list li { margin-bottom: 0.35rem; }
.g4-deliverable-intro { margin: 0 0 0.75rem; color: var(--text-secondary, var(--ink-700)); line-height: 1.55; }
.g4-coverage { margin-top: 1.25rem; overflow-x: auto; }
.g4-coverage h3 { margin: 0 0 0.65rem; color: var(--ink-950); font-size: 1.05rem; }
.g4-coverage-table { width: 100%; min-width: 560px; border-collapse: collapse; color: var(--ink-700); font-size: 0.8rem; line-height: 1.45; }
.g4-coverage-table th, .g4-coverage-table td { padding: 0.65rem 0.7rem; border: 1px solid var(--ink-200); text-align: left; vertical-align: top; }
.g4-coverage-table th { background: var(--ink-100); color: var(--ink-950); font-weight: 800; }
.g4-deliverable-upload { margin: 0 0 0.5rem; color: var(--text-secondary, var(--ink-700)); line-height: 1.5; }
.g4-deliverable-upload--example { font-size: 0.9rem; }
.g4-deliverable-upload code { overflow-wrap: anywhere; }
.completion-section code { white-space: normal; overflow-wrap: anywhere; word-break: break-word; }

@media (min-width: 640px) {
  .agile-term-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .planning-truths { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .g4-sena-sequence { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .g4-ai-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}

@media (min-width: 1024px) {
  .agile-term-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); }
  .g4-sena-sequence { grid-template-columns: repeat(4, minmax(0, 1fr)); }
}

@media (max-width: 900px) {
  .g4-handoff { grid-template-columns: 1fr; }
  .g4-handoff > span { transform: rotate(90deg); justify-self: center; }
  .g4-instrument-grid { grid-template-columns: 1fr; }
}

@media (max-width: 620px) {
  .g4-form-grid { grid-template-columns: 1fr; }
  .g4-form-span { grid-column: auto; }
}

@media (max-width: 620px) {
  .g4-deliverable-scope { grid-template-columns: 1fr; }
  .g4-deliverable-heading h3 { font-size: 1.05rem; }
  .column-limit { font-size: 8px; }
}

@media (max-width: 430px) {
  .agile-refinement-block > div:last-child { grid-template-columns: 1fr !important; }
  .completion-section { padding-inline: 12px !important; }
  .completion-card { width: 100% !important; padding: 18px !important; }
  .completion-card > div,
  .completion-card [style*="width: 100%"] { min-width: 0; max-width: 100%; }
  .completion-card ol,
  .completion-card ul { margin-left: 0 !important; padding-left: 20px !important; }
  .guide-nav-banner .button { max-width: 100%; white-space: normal !important; text-align: center; }
}

/* ═══════════════════════════════════════════════════════════════
   FLUJO LÓGICO FASE 1
   ═══════════════════════════════════════════════════════════════ */
.flow-section {
  background: linear-gradient(135deg, var(--white), var(--paper));
  border-top: 1px solid var(--ink-200);
  border-bottom: 1px solid var(--ink-200);
  padding: 60px 0;
}

.section-header {
  max-width: 760px;
  margin: 0 0 32px;
}

.section-number {
  display: block;
  margin-bottom: 10px;
  color: var(--indigo);
  font-size: 0.72rem;
  font-weight: 900;
  letter-spacing: 0.14em;
  line-height: 1;
}

.section-title {
  margin: 0;
  color: var(--ink-950);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
  letter-spacing: -0.055em;
  line-height: 1.05;
}

.section-subtitle {
  max-width: 640px;
  margin: 14px 0 0;
  color: var(--ink-700);
  font-size: 1rem;
  line-height: 1.6;
}

.flow-timeline {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr) auto minmax(0, 1fr) auto minmax(0, 1fr);
  gap: clamp(8px, 1.2vw, 16px);
  align-items: stretch;
}

@media (max-width: 980px) {
  .flow-timeline {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .flow-arrow {
    display: none;
  }
}

.flow-node {
  background: var(--white);
  border: 1px solid var(--ink-200);
  border-radius: var(--radius-md);
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  min-width: 0;
  transition: transform 0.3s ease, border-color 0.3s ease;
  position: relative;
  overflow: hidden;
}

.flow-node:hover {
  transform: translateY(-4px);
  border-color: var(--indigo);
  box-shadow: var(--shadow-sm);
}

.flow-node.active {
  border-color: var(--indigo);
  background: var(--indigo-soft);
  box-shadow: 0 0 0 1px var(--indigo), var(--shadow-sm);
}

.flow-icon {
  font-size: 2rem;
  margin-bottom: 4px;
}

.flow-badge {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 4px 8px;
  border-radius: 4px;
  background: var(--ink-100);
  color: var(--ink-700);
  align-self: flex-start;
}

.flow-badge.highlight {
  background: var(--indigo);
  color: var(--white);
}

.flow-content h3 {
  overflow-wrap: anywhere;
  font-size: 1.1rem;
  color: var(--ink-950);
  margin: 8px 0;
}

.flow-content p {
  overflow-wrap: anywhere;
  font-size: 0.85rem;
  color: var(--ink-700);
  line-height: 1.5;
  flex-grow: 1;
}

.flow-artifact {
  overflow-wrap: anywhere;
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px dashed var(--ink-300);
  font-size: 0.8rem;
  color: var(--indigo-dark);
}

.flow-arrow {
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  color: var(--ink-300);
}

@media (max-width: 620px) {
  .flow-timeline {
    grid-template-columns: 1fr;
  }

  .flow-arrow {
    display: flex;
    width: 36px;
    height: 28px;
    min-height: 28px;
    align-self: center;
    justify-self: center;
    transform: rotate(90deg);
  }
}