/* ===== HERO EREADER ===== */
.ereader-hero {
  position: relative;
  width: 100%;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 6rem 5vw;
  background: radial-gradient(circle at 30% 20%, #f9f9ff 0%, #eef1ff 45%, #ffffff 100%);
  overflow: hidden;
}

.ereader-hero__background {
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at right, rgba(15, 60, 240, 0.1), transparent 60%);
  z-index: 1;
}

.ereader-hero__container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  max-width: 1200px;
  width: 100%;
  align-items: center;
  gap: 3rem;
  position: relative;
  z-index: 2;
}

.ereader-hero__text {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.ereader-hero__title {
  font-size: clamp(2.4rem, 4vw, 3.6rem);
  line-height: 1.05;
  font-weight: 700;
  color: #0a0e1f;
  letter-spacing: -0.02em;
  position: relative;
}

.ereader-hero__title span {
  color: #0f3cf0;
}

.ereader-hero__title .highlight {
  position: relative;
  background: linear-gradient(135deg, #0f3cf0 0%, #00baff 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  font-weight: 800;
}

.ereader-hero__subtitle {
  font-size: 1rem;
  color: rgba(15, 18, 36, 0.7);
  line-height: 1.7;
  max-width: 32rem;
}

.ereader-hero__buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-top: 0.5rem;
}

.btn-primary {
  background: linear-gradient(135deg, #0f3cf0, #081755);
  color: #fff;
  padding: 0.9rem 1.6rem;
  border-radius: 9999px;
  font-size: 0.9rem;
  font-weight: 500;
  text-decoration: none;
  transition: all 0.3s ease;
  box-shadow: 0 12px 30px rgba(15, 60, 240, 0.35);
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 16px 38px rgba(15, 60, 240, 0.25);
}

.btn-outline {
  border: 1px solid rgba(15, 60, 240, 0.4);
  color: #0f3cf0;
  padding: 0.9rem 1.6rem;
  border-radius: 9999px;
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  backdrop-filter: blur(6px);
  transition: all 0.3s ease;
}

.btn-outline:hover {
  background: rgba(15, 60, 240, 0.05);
}

.ereader-hero__visual {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
}

.ereader-hero__img {
  width: min(100%, 420px);
  height: auto;
  filter: drop-shadow(0 25px 45px rgba(0, 20, 80, 0.25));
  border-radius: 18px;
  animation: float 5s ease-in-out infinite;
}

.ereader-hero__glow {
  position: absolute;
  width: 360px;
  height: 360px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(15, 60, 240, 0.3) 0%, transparent 80%);
  filter: blur(50px);
  animation: pulse 6s ease-in-out infinite;
  z-index: -1;
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

@keyframes pulse {
  0%, 100% { opacity: 0.7; transform: scale(1); }
  50% { opacity: 1; transform: scale(1.05); }
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .ereader-hero__container {
    grid-template-columns: 1fr;
    text-align: center;
  }
  .ereader-hero__text {
    align-items: center;
  }
  .ereader-hero__subtitle {
    max-width: 100%;
  }
}

@media (max-width: 640px) {
  .ereader-hero {
    padding: 5rem 1.2rem;
  }
  .ereader-hero__title {
    font-size: 2.3rem;
  }
  .ereader-hero__buttons {
    flex-direction: column;
    align-items: center;
  }
}
/* ===== EREADER FLOW (sesión 2) ===== */
.ereader-flow {
  width: 100%;
  background: #ffffff;
  padding: 4.5rem 5vw 4.8rem;
}

.ereader-flow__container {
  max-width: 1180px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 3.2rem;
}

.ereader-flow__head {
  max-width: 650px;
}

.ereader-flow__head h2 {
  font-size: clamp(2rem, 3vw, 2.4rem);
  font-weight: 650;
  color: #0a0e1f;
  letter-spacing: -0.01em;
  margin-bottom: 1.15rem;
}

.ereader-flow__head p {
  color: rgba(8, 11, 21, 0.68);
  line-height: 1.7;
  font-size: 1rem;
}

.ereader-flow__grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.5rem;
  position: relative;
}

/* Línea conectora de fondo */
.ereader-flow__grid::before {
  content: "";
  position: absolute;
  top: 50%;
  left: 6%;
  right: 6%;
  height: 2px;
  background: linear-gradient(90deg, rgba(15, 60, 240, 0) 0%, rgba(15, 60, 240, 0.3) 20%, rgba(15, 60, 240, 0.1) 80%, rgba(15, 60, 240, 0) 100%);
  transform: translateY(-50%);
  pointer-events: none;
}

.ereader-step {
  background: linear-gradient(160deg, #ffffff 0%, #f4f6ff 120%);
  border: 1px solid rgba(15, 60, 240, 0.04);
  border-radius: 1.4rem;
  padding: 1.5rem 1.3rem 1.55rem;
  box-shadow: 0 16px 38px rgba(9, 18, 58, 0.03);
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  gap: 0.7rem;
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.ereader-step:hover {
  transform: translateY(-5px);
  box-shadow: 0 20px 36px rgba(9, 18, 58, 0.08);
}

.ereader-step__number {
  width: 44px;
  height: 44px;
  border-radius: 1.2rem;
  background: rgba(15, 60, 240, 0.08);
  color: #00103b;
  font-weight: 600;
  display: grid;
  place-items: center;
  font-size: 0.8rem;
  margin-bottom: 0.3rem;
}

.ereader-step h3 {
  font-size: 1.15rem;
  color: #030814;
  font-weight: 600;
}

.ereader-step p {
  font-size: 0.9rem;
  color: rgba(2, 5, 10, 0.63);
  line-height: 1.5;
}

.ereader-step ul {
  list-style: none;
  margin: 0.5rem 0 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.ereader-step ul li {
  font-size: 0.78rem;
  color: rgba(2, 5, 10, 0.6);
  padding-left: 1.1rem;
  position: relative;
}

.ereader-step ul li::before {
  content: "";
  width: 6px;
  height: 6px;
  background: linear-gradient(135deg, #0f3cf0 0%, #00baff 100%);
  border-radius: 999px;
  position: absolute;
  left: 0;
  top: 0.45rem;
}

.ereader-step--middle {
  background: radial-gradient(circle at 15% 10%, rgba(15, 60, 240, 0.08) 0%, #ffffff 70%);
  border: 1px solid rgba(15, 60, 240, 0.16);
}

/* Responsive */
@media (max-width: 1024px) {
  .ereader-flow__grid {
    grid-template-columns: 1fr;
  }
  .ereader-flow__grid::before {
    display: none;
  }
  .ereader-step {
    flex-direction: column;
  }
}
@media (max-width: 640px) {
  .ereader-flow {
    padding: 3.5rem 1.2rem;
  }
  .ereader-flow__head h2 {
    font-size: 2rem;
  }
}
/* ===== EREADER MODES (sesión intermedia) ===== */
.ereader-modes {
  width: 100%;
  background: #f7f8ff;
  padding: 4.3rem 5vw 4.6rem;
  display: flex;
  flex-direction: column;
  gap: 2.5rem;
}

.ereader-modes__head {
  max-width: 700px;
  margin: 0 auto;
  text-align: center;
}

.ereader-modes__head h2 {
  font-size: clamp(1.9rem, 3vw, 2.3rem);
  font-weight: 650;
  color: #0a0e1f;
  margin-bottom: 0.7rem;
}

.ereader-modes__head p {
  color: rgba(7, 9, 15, 0.6);
  line-height: 1.6;
  font-size: 0.95rem;
}

.ereader-modes__grid {
  max-width: 1180px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1.1rem;
}

.mode-card {
  background: #ffffff;
  border: 1px solid rgba(13, 23, 64, 0.04);
  border-radius: 1.1rem;
  padding: 1.35rem 1.1rem 1.3rem;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  box-shadow: 0 6px 22px rgba(8, 11, 21, 0.03);
  transition: transform 0.23s ease, box-shadow 0.23s ease, border 0.23s ease;
  min-height: 195px;
}

.mode-card:hover {
  transform: translateY(-4px);
  border: 1px solid rgba(15, 60, 240, 0.18);
  box-shadow: 0 14px 32px rgba(4, 22, 75, 0.08);
}

.mode-card h3 {
  font-size: 1.05rem;
  font-weight: 600;
  color: #0a0e1f;
}

.mode-card p {
  font-size: 0.82rem;
  line-height: 1.4;
  color: rgba(2, 4, 9, 0.62);
}

.mode-tag {
  margin-top: auto;
  display: inline-flex;
  padding: 0.3rem 0.75rem;
  background: rgba(15, 60, 240, 0.06);
  border: 1px solid rgba(15, 60, 240, 0.05);
  border-radius: 9999px;
  font-size: 0.68rem;
  color: #0f3cf0;
  width: max-content;
}

/* Acentos distintos por modo */
.mode-card--business {
  background: radial-gradient(circle at 20% 20%, rgba(163, 214, 255, 0.35) 0%, #ffffff 48%, #ffffff 100%);
}
.mode-card--authors {
  background: radial-gradient(circle at 85% 10%, rgba(160, 183, 253, 0.45) 0%, #ffffff 65%, #ffffff 100%);
}

.ereader-modes__action {
  text-align: center;
}

.btn-modes {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  background: #0f3cf0;
  color: #fff;
  border-radius: 9999px;
  padding: 0.75rem 1.7rem;
  text-decoration: none;
  font-size: 0.85rem;
  font-weight: 500;
  transition: transform 0.25s ease, box-shadow 0.25s ease;
  box-shadow: 0 12px 32px rgba(15, 60, 240, 0.35);
}

.btn-modes:hover {
  transform: translateY(-2px);
  box-shadow: 0 16px 36px rgba(15, 60, 240, 0.28);
}

/* Responsive */
@media (max-width: 1024px) {
  .ereader-modes__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}
@media (max-width: 640px) {
  .ereader-modes {
    padding: 3.5rem 1.2rem;
  }
  .ereader-modes__grid {
    grid-template-columns: 1fr;
  }
  .mode-card {
    min-height: auto;
  }
}
/
/* ===== EREADER DESIGN (sesión 4) ===== */
.ereader-design {
  width: 100%;
  background: #ffffff;
  padding: 4.8rem 5vw 4.8rem;
}

.ereader-design__container {
  max-width: 1180px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 3.2rem;
  align-items: center;
}

.ereader-design__content .eyebrow {
  text-transform: uppercase;
  font-size: 0.65rem;
  letter-spacing: 0.24em;
  color: rgba(8, 10, 19, 0.55);
  margin-bottom: 0.8rem;
}

.ereader-design__content h2 {
  font-size: clamp(2rem, 3vw, 2.4rem);
  color: #0a0e1f;
  font-weight: 650;
  margin-bottom: 1rem;
}

.ereader-design__content .lead {
  font-size: 1rem;
  line-height: 1.65;
  color: rgba(6, 8, 14, 0.7);
  max-width: 35rem;
  margin-bottom: 1.4rem;
}

.ereader-feature-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
  margin-bottom: 1.7rem;
}

.ereader-feature {
  background: linear-gradient(160deg, rgba(15, 60, 240, 0.03) 0%, #ffffff 100%);
  border: 1px solid rgba(15, 60, 240, 0.025);
  border-radius: 1.2rem;
  padding: 1rem 1rem 0.9rem;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.ereader-feature h3 {
  font-size: 0.9rem;
  font-weight: 600;
  color: #091022;
}

.ereader-feature p {
  font-size: 0.8rem;
  line-height: 1.4;
  color: rgba(3, 5, 11, 0.62);
}

.btn-design {
  display: inline-flex;
  background: #0f3cf0;
  color: #fff;
  border-radius: 9999px;
  padding: 0.7rem 1.5rem;
  font-size: 0.85rem;
  font-weight: 500;
  text-decoration: none;
  transition: transform 0.25s ease, box-shadow 0.25s ease;
  box-shadow: 0 12px 30px rgba(15, 60, 240, 0.28);
}

.btn-design:hover {
  transform: translateY(-2px);
  box-shadow: 0 16px 36px rgba(15, 60, 240, 0.26);
}

.ereader-design__visual {
  position: relative;
  min-height: 320px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.ereader-design__img,
.ereader-design__video {
  width: min(100%, 440px);
  border-radius: 1.4rem;
  background: #eef2ff;
  box-shadow: 0 28px 55px rgba(3, 9, 27, 0.25);
  object-fit: cover;
}

.ereader-design__badge {
  position: absolute;
  top: 10%;
  right: 7%;
  background: rgba(4, 9, 25, 0.88);
  color: #fff;
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  padding: 0.4rem 0.9rem;
  border-radius: 9999px;
  backdrop-filter: blur(8px);
  border: 1px solid rgba(120, 140, 255, 0.6);
  animation: float 4.5s ease-in-out infinite;
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-3px); }
}

/* Responsive */
@media (max-width: 1024px) {
  .ereader-design__container {
    grid-template-columns: 1fr;
  }
  .ereader-design__content .lead {
    max-width: 100%;
  }
  .ereader-feature-list {
    grid-template-columns: 1fr;
  }
  .ereader-design__visual {
    margin-top: 1.5rem;
  }
}

@media (max-width: 640px) {
  .ereader-design {
    padding: 4rem 1.2rem;
  }
}
/* ===== EREADER SPECS (sesión técnica) ===== */
.ereader-specs {
  width: 100%;
  background: #ffffff;
  padding: 4.5rem 5vw 4.8rem;
}

.ereader-specs__head {
  max-width: 720px;
  margin: 0 auto 3rem;
  text-align: center;
}

.ereader-specs__head h2 {
  font-size: clamp(1.9rem, 3vw, 2.35rem);
  font-weight: 650;
  color: #070b15;
  margin-bottom: 0.8rem;
}

.ereader-specs__head p {
  color: rgba(7, 10, 17, 0.6);
  line-height: 1.6;
  font-size: 0.95rem;
}

.ereader-specs__grid {
  max-width: 1180px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1.1rem;
}

.spec-card {
  background: radial-gradient(circle at top, rgba(241, 244, 255, 0.7) 0%, #ffffff 40%, #ffffff 100%);
  border: 1px solid rgba(15, 60, 240, 0.03);
  border-radius: 1rem;
  padding: 1.25rem 1.05rem 1.15rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  box-shadow: 0 10px 26px rgba(7, 14, 40, 0.02);
  min-height: 165px;
  transition: transform 0.22s ease, box-shadow 0.22s ease;
}

.spec-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 16px 42px rgba(7, 14, 40, 0.05);
}

.spec-card h3 {
  font-size: 0.83rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: rgba(1, 3, 7, 0.9);
}

.spec-main {
  font-size: 1.05rem;
  font-weight: 600;
  color: #0f3cf0;
}

.spec-sub {
  font-size: 0.77rem;
  color: rgba(7, 10, 17, 0.6);
}

.spec-card ul {
  list-style: none;
  padding: 0;
  margin: 0.25rem 0 0;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.spec-card ul li {
  font-size: 0.7rem;
  color: rgba(3, 5, 9, 0.6);
  padding-left: 0.8rem;
  position: relative;
}

.spec-card ul li::before {
  content: "";
  width: 4px;
  height: 4px;
  background: linear-gradient(135deg, #0f3cf0 0%, #00baff 100%);
  border-radius: 999px;
  position: absolute;
  left: 0;
  top: 0.45rem;
}

/* tarjeta ancha para el SO */
.spec-card--wide {
  grid-column: span 2;
  background: linear-gradient(150deg, rgba(15, 60, 240, 0.04) 0%, #ffffff 55%);
  border: 1px solid rgba(15, 60, 240, 0.12);
}

@media (max-width: 1024px) {
  .ereader-specs__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .spec-card--wide {
    grid-column: span 2;
  }
}

@media (max-width: 640px) {
  .ereader-specs {
    padding: 3.5rem 1.1rem 4rem;
  }
  .ereader-specs__grid {
    grid-template-columns: 1fr;
  }
  .spec-card--wide {
    grid-column: span 1;
  }
}
/* ===== COOBOOK OS (sesión) ===== */
.coobook-os-layer {
  width: 100%;
  background: linear-gradient(110deg, #ffffff 0%, #ffffff 55%, #edf1ff 100%);
  padding: 4.5rem 5vw 4.8rem;
}

.coobook-os__content {
  max-width: 1180px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 0.95fr 1.05fr;
  gap: 3rem;
  align-items: center;
}

.coobook-os__text h2 {
  font-size: clamp(1.9rem, 2.8vw, 2.3rem);
  font-weight: 650;
  color: #060911;
  margin-bottom: 1rem;
}

.coobook-os__text p {
  color: rgba(4, 6, 10, 0.63);
  line-height: 1.65;
  font-size: 0.93rem;
  margin-bottom: 0.65rem;
}

.coobook-os__note {
  background: rgba(15, 60, 240, 0.035);
  border: 1px solid rgba(15, 60, 240, 0.04);
  border-radius: 0.85rem;
  padding: 0.75rem 0.85rem;
  font-size: 0.78rem;
  color: rgba(3, 5, 9, 0.6);
}

.coobook-os__btn {
  display: inline-flex;
  margin-top: 1.1rem;
  background: #0f3cf0;
  color: #fff;
  padding: 0.7rem 1.45rem;
  border-radius: 9999px;
  font-weight: 500;
  text-decoration: none;
  font-size: 0.82rem;
  box-shadow: 0 10px 24px rgba(15, 60, 240, 0.35);
  transition: transform 0.2s ease;
}

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

.coobook-os__layers {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.os-layer {
  background: #ffffff;
  border: 1px solid rgba(14, 22, 54, 0.04);
  border-radius: 1.05rem;
  padding: 1.1rem 1.25rem 1.05rem;
  box-shadow: 0 10px 26px rgba(0, 0, 0, 0.015);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.os-layer:hover {
  transform: translateY(-3px);
  box-shadow: 0 16px 40px rgba(10, 19, 53, 0.04);
}

.os-layer h3 {
  font-size: 0.9rem;
  font-weight: 600;
  color: #060911;
  margin-bottom: 0.45rem;
}

.os-layer p {
  font-size: 0.78rem;
  line-height: 1.4;
  color: rgba(1, 2, 5, 0.6);
}

.os-layer ul {
  list-style: none;
  margin: 0.5rem 0 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.28rem;
}

.os-layer ul li {
  font-size: 0.72rem;
  color: rgba(2, 3, 6, 0.6);
  padding-left: 0.9rem;
  position: relative;
}

.os-layer ul li::before {
  content: "";
  width: 5px;
  height: 5px;
  background: linear-gradient(135deg, #0f3cf0 0%, #00baff 100%);
  border-radius: 999px;
  position: absolute;
  left: 0;
  top: 0.4rem;
}

.os-tag {
  display: inline-flex;
  margin-top: 0.6rem;
  background: rgba(15, 60, 240, 0.05);
  border: 1px solid rgba(15, 60, 240, 0.04);
  border-radius: 9999px;
  padding: 0.32rem 0.75rem;
  font-size: 0.65rem;
  color: #0f3cf0;
  width: max-content;
}

/* Colores distintos por capa */
.os-layer--base {
  background: linear-gradient(145deg, rgba(223, 235, 255, 0.35) 0%, #ffffff 60%);
}
.os-layer--secure {
  background: radial-gradient(circle at 15% 15%, rgba(160, 183, 253, 0.35) 0%, #ffffff 70%);
}
.os-layer--chain {
  background: radial-gradient(circle at 90% 10%, rgba(118, 162, 255, 0.35) 0%, #ffffff 70%);
}

@media (max-width: 1024px) {
  .coobook-os__content {
    grid-template-columns: 1fr;
  }
  .coobook-os__text {
    max-width: 620px;
  }
}
@media (max-width: 640px) {
  .coobook-os-layer {
    padding: 3.5rem 1.2rem 4rem;
  }
  .os-layer {
    padding: 1rem 1rem;
  }
}
/* ===== SISTEMA SOLAR COOBOOK ===== */
.ereader-orbit {
  width: 100%;
  background: radial-gradient(circle at top, #f6f7ff 0%, #ffffff 60%, #ffffff 100%);
  padding: 4.5rem 5vw 5rem;
  display: flex;
  flex-direction: column;
  gap: 2.6rem;
  align-items: center;
}

.ereader-orbit__head {
  max-width: 760px;
  text-align: center;
}

.ereader-orbit__head h2 {
  font-size: clamp(1.9rem, 3vw, 2.35rem);
  font-weight: 650;
  color: #050914;
  margin-bottom: 0.7rem;
}

.ereader-orbit__head p {
  color: rgba(5, 7, 12, 0.62);
  line-height: 1.6;
  font-size: 0.93rem;
}

/* Escena circular */
.ereader-orbit__scene {
  position: relative;
  width: min(930px, 100%);
  aspect-ratio: 1 / 1;
  margin: 0 auto;
}

/* núcleo */
.orbit-center {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}

.orbit-core {
  width: 190px;
  height: 190px;
  background: radial-gradient(circle, #0f3cf0 0%, #081755 75%);
  border-radius: 50%;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  align-items: center;
  justify-content: center;
  text-align: center;
  color: #fff;
  box-shadow: 0 20px 55px rgba(15, 60, 240, 0.38);
  padding: 1.2rem;
  animation: core-glow 4s ease-in-out infinite;
}

.core-title {
  font-weight: 600;
  font-size: 0.9rem;
}

.core-sub {
  font-size: 0.6rem;
  line-height: 1.3;
  opacity: 0.8;
}

/* anillos */
.orbit-ring {
  position: absolute;
  top: 50%;
  left: 50%;
  border-radius: 50%;
  border: 1px dashed rgba(15, 60, 240, 0.12);
  transform: translate(-50%, -50%);
}

/* tamaños de órbita */
.orbit-ring--1 { width: 270px; height: 270px; }
.orbit-ring--2 { width: 360px; height: 360px; }
.orbit-ring--3 { width: 470px; height: 470px; }
.orbit-ring--4 { width: 590px; height: 590px; }
.orbit-ring--5 { width: 720px; height: 720px; }

/* items en órbita */
.orbit-item {
  position: absolute;
  width: 170px;
  background: #ffffff;
  border: 1px solid rgba(10, 18, 58, 0.04);
  border-radius: 1.1rem;
  padding: 0.85rem 0.75rem 0.8rem;
  box-shadow: 0 10px 30px rgba(9, 16, 47, 0.05);
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  animation: orbit-breathe 4.5s ease-in-out infinite;
}

.orbit-item h3 {
  font-size: 0.78rem;
  font-weight: 600;
  color: #050914;
}

.orbit-item p {
  font-size: 0.7rem;
  color: rgba(5, 7, 12, 0.63);
  line-height: 1.35;
}

/* posiciones de cada tarjeta */
.orbit-item--1 { top: -36px; left: 50%; transform: translateX(-50%); }
.orbit-item--2 { top: 54%; right: -75px; transform: translateY(-50%); }
.orbit-item--3 { bottom: -32px; left: 58%; }
.orbit-item--4 { bottom: 6%; left: -70px; }
.orbit-item--5 { top: 14%; left: -85px; }

/* animaciones */
@keyframes core-glow {
  0%, 100% { box-shadow: 0 20px 55px rgba(15, 60, 240, 0.35); transform: scale(1); }
  50% { box-shadow: 0 26px 70px rgba(15, 60, 240, 0.5); transform: scale(1.015); }
}

@keyframes orbit-breathe {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-3px); }
}

/* footer */
.ereader-orbit__footer {
  margin-top: 1rem;
}

.orbit-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  background: #0f3cf0;
  color: #fff;
  padding: 0.6rem 1.4rem;
  border-radius: 9999px;
  text-decoration: none;
  font-size: 0.78rem;
  font-weight: 500;
  box-shadow: 0 12px 32px rgba(15, 60, 240, 0.35);
  transition: transform 0.2s ease;
}

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

/* responsive */
@media (max-width: 1024px) {
  .ereader-orbit__scene {
    width: 520px;
  }
  .orbit-ring--5 {
    display: none;
  }
  .orbit-item--5 {
    display: none;
  }
}

@media (max-width: 640px) {
  .ereader-orbit {
    padding: 3.5rem 1.1rem 4rem;
  }
  .ereader-orbit__scene {
    width: 100%;
    aspect-ratio: auto;
    min-height: 400px;
  }
  .orbit-ring--4,
  .orbit-ring--5 {
    display: none;
  }
  .orbit-item {
    width: 150px;
  }
  .orbit-item--2 { right: 0; }
  .orbit-item--4 { left: 0; }
  .orbit-core {
    width: 170px;
    height: 170px;
  }
}
/* ===== CTA RESERVA EREADER ===== */
.ereader-cta {
  width: 100%;
  background: linear-gradient(145deg, #ffffff 0%, #edf1ff 65%, #ffffff 100%);
  padding: 4.8rem 5vw 5.2rem;
}

.ereader-cta__content {
  max-width: 1180px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 2.5rem;
  align-items: center;
}

.ereader-cta__text h2 {
  font-size: clamp(2rem, 3vw, 2.4rem);
  font-weight: 650;
  color: #040711;
  margin-bottom: 1rem;
}

.ereader-cta__text p {
  color: rgba(4, 6, 10, 0.63);
  line-height: 1.6;
  font-size: 0.95rem;
}

.ereader-cta__benefits {
  list-style: none;
  margin: 1.2rem 0 1.3rem;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem 1rem;
}

.ereader-cta__benefits li {
  position: relative;
  padding-left: 1.05rem;
  font-size: 0.82rem;
  color: rgba(4, 6, 10, 0.7);
}

.ereader-cta__benefits li::before {
  content: "";
  width: 6px;
  height: 6px;
  background: linear-gradient(135deg, #0f3cf0 0%, #00baff 100%);
  border-radius: 9999px;
  position: absolute;
  left: 0;
  top: 0.5rem;
}

.ereader-cta__note {
  font-size: 0.75rem;
  color: rgba(3, 5, 9, 0.5);
  margin-top: 0.7rem;
}

.ereader-cta__card {
  background: #ffffff;
  border: 1px solid rgba(15, 60, 240, 0.05);
  border-radius: 1.4rem;
  box-shadow: 0 18px 45px rgba(5, 9, 24, 0.05);
  overflow: hidden;
  max-width: 380px;
  margin-left: auto;
}

.cta-card__header {
  background: radial-gradient(circle at top, rgba(15, 60, 240, 1) 0%, rgba(8, 23, 85, 1) 100%);
  color: #fff;
  padding: 1.4rem 1.2rem 1.3rem;
}

.cta-badge {
  display: inline-flex;
  background: rgba(255, 255, 255, 0.2);
  padding: 0.32rem 0.75rem;
  font-size: 0.63rem;
  border-radius: 9999px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 0.7rem;
}

.cta-card__header h3 {
  font-size: 1.15rem;
  font-weight: 600;
}

.cta-sub {
  font-size: 0.75rem;
  opacity: 0.85;
  margin-top: 0.3rem;
}

.cta-card__body {
  padding: 1.3rem 1.15rem 1.2rem;
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
}

.cta-price {
  font-size: 1.05rem;
  font-weight: 600;
  color: #0f3cf0;
}

.cta-desc {
  font-size: 0.75rem;
  color: rgba(8, 11, 23, 0.7);
}

.cta-button {
  display: inline-flex;
  justify-content: center;
  align-items: center;
  background: #0f3cf0;
  color: #fff;
  border: none;
  border-radius: 9999px;
  padding: 0.7rem 0;
  text-decoration: none;
  font-weight: 500;
  font-size: 0.82rem;
  margin: 0.35rem 0 0.25rem;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  box-shadow: 0 12px 30px rgba(15, 60, 240, 0.35);
}

.cta-button:hover {
  transform: translateY(-1px);
  box-shadow: 0 15px 34px rgba(15, 60, 240, 0.25);
}

.cta-footer {
  font-size: 0.65rem;
  color: rgba(5, 7, 14, 0.5);
  line-height: 1.4;
}

@media (max-width: 1024px) {
  .ereader-cta__content {
    grid-template-columns: 1fr;
  }
  .ereader-cta__card {
    margin-left: 0;
  }
}
@media (max-width: 640px) {
  .ereader-cta {
    padding: 3.6rem 1.1rem 4rem;
  }
  .ereader-cta__benefits {
    flex-direction: column;
  }
}
/* ===== COMPARATIVA ===== */
.ereader-compare {
  width: 100%;
  background: #ffffff;
  padding: 4.5rem 5vw 4.8rem;
}

.ereader-compare__head {
  max-width: 720px;
  margin: 0 auto 2.8rem;
  text-align: center;
}

.ereader-compare__head h2 {
  font-size: clamp(1.9rem, 3vw, 2.3rem);
  font-weight: 650;
  color: #050914;
  margin-bottom: 0.7rem;
}

.ereader-compare__head p {
  color: rgba(5, 7, 12, 0.58);
  line-height: 1.6;
  font-size: 0.9rem;
}

/* tabla */
.ereader-compare__table {
  display: grid;
  grid-template-columns: 0.8fr 1fr 1fr;
  max-width: 1180px;
  margin: 0 auto;
  background: #f4f6ff;
  border: 1px solid rgba(15, 60, 240, 0.04);
  border-radius: 1.3rem;
  overflow: hidden;
}

.compare-col,
.compare-row {
  border-bottom: 1px solid rgba(3, 6, 30, 0.04);
  padding: 1rem 1rem 1rem 1.25rem;
}

.compare-col--basic {
  background: rgba(255, 255, 255, 0.8);
}

.compare-col--pro {
  background: linear-gradient(160deg, rgba(15, 60, 240, 0.08) 0%, rgba(255, 255, 255, 0.1) 100%);
}

.compare-col--basic h3,
.compare-col--pro h3 {
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 0.3rem;
}

.compare-col--basic p,
.compare-col--pro p {
  font-size: 0.72rem;
  color: rgba(5, 7, 12, 0.55);
}

.compare-row--title {
  background: #ffffff;
  font-weight: 500;
  font-size: 0.78rem;
  color: #020406;
}

.compare-row--basic,
.compare-row--pro {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

.badge-no,
.badge-yes {
  display: inline-flex;
  padding: 0.3rem 0.7rem;
  border-radius: 9999px;
  font-size: 0.65rem;
  font-weight: 600;
  width: max-content;
}

.badge-no {
  background: rgba(217, 60, 56, 0.08);
  color: #d93c38;
}

.badge-yes {
  background: rgba(15, 60, 240, 0.08);
  color: #0f3cf0;
}

.row-desc {
  font-size: 0.7rem;
  color: rgba(5, 7, 12, 0.5);
}

@media (max-width: 900px) {
  .ereader-compare__table {
    display: block;
  }
  .compare-col--label {
    display: none;
  }
  .compare-col--basic,
  .compare-col--pro,
  .compare-row {
    border-bottom: 1px solid rgba(3, 6, 30, 0.04);
  }
  .compare-row--title {
    background: #f8f9ff;
  }
}
@media (max-width: 640px) {
  .ereader-compare {
    padding: 3.5rem 1.1rem 4rem;
  }
  .ereader-compare__table {
    border-radius: 1rem;
  }
}
/* ===== FAQ ===== */
.ereader-faq {
  width: 100%;
  background: #f7f8ff;
  padding: 4.5rem 5vw 4.8rem;
}

.faq__head {
  max-width: 720px;
  margin: 0 auto 2.5rem;
  text-align: center;
}

.faq__head h2 {
  font-size: clamp(1.9rem, 3vw, 2.3rem);
  font-weight: 650;
  color: #060912;
  margin-bottom: 0.8rem;
}

.faq__head p {
  color: rgba(5, 7, 12, 0.6);
  font-size: 0.93rem;
  line-height: 1.6;
}

/* Contenedor */
.faq__container {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

/* Acordeón */
.faq-item {
  background: #fff;
  border: 1px solid rgba(15, 60, 240, 0.08);
  border-radius: 0.9rem;
  overflow: hidden;
  box-shadow: 0 8px 24px rgba(7, 12, 32, 0.03);
}

.faq-question {
  display: block;
  position: relative;
  padding: 1rem 1.2rem 1rem 2.5rem;
  cursor: pointer;
  font-weight: 600;
  font-size: 0.9rem;
  color: #0a0e1f;
}

.faq-question::before {
  content: "+";
  position: absolute;
  left: 1rem;
  top: 50%;
  transform: translateY(-50%);
  font-size: 1.3rem;
  color: #0f3cf0;
  transition: transform 0.25s ease;
}

.faq-item input {
  display: none;
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: all 0.4s ease;
  padding: 0 1.2rem;
}

.faq-answer p {
  font-size: 0.83rem;
  color: rgba(5, 7, 12, 0.65);
  line-height: 1.6;
  margin-bottom: 1rem;
}

.faq-item input:checked ~ .faq-answer {
  max-height: 500px;
  padding-top: 0.2rem;
  padding-bottom: 0.9rem;
}

.faq-item input:checked + .faq-question::before {
  transform: translateY(-50%) rotate(45deg);
}

@media (max-width: 640px) {
  .ereader-faq {
    padding: 3.5rem 1.2rem 4rem;
  }
  .faq-question {
    padding-left: 2rem;
  }
}
/* ===== CIERRE INSPIRACIONAL ===== */
.ereader-closing {
  width: 100%;
  position: relative;
  background: radial-gradient(circle at 20% 20%, #0f3cf0 0%, #040815 75%);
  min-height: 360px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 4.5rem 5vw 4.8rem;
  overflow: hidden;
}

.ereader-closing__overlay {
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(circle, rgba(255, 255, 255, 0.24) 0%, rgba(4, 8, 21, 0) 55%),
    radial-gradient(circle, rgba(255, 255, 255, 0.12) 0%, rgba(4, 8, 21, 0) 65%);
  mix-blend-mode: screen;
  opacity: 0.5;
  animation: breathing-bg 10s ease-in-out infinite;
  pointer-events: none;
}

.ereader-closing__content {
  position: relative;
  z-index: 2;
  max-width: 720px;
  text-align: center;
  color: #fff;
  display: flex;
  flex-direction: column;
  gap: 1.1rem;
}

.ereader-closing__content h2 {
  font-size: clamp(2rem, 3.2vw, 2.6rem);
  font-weight: 650;
  letter-spacing: -0.01em;
}

.ereader-closing__content p {
  font-size: 0.9rem;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.72);
}

.closing-btn {
  display: inline-flex;
  align-self: center;
  background: #ffffff;
  color: #0f3cf0;
  border-radius: 9999px;
  padding: 0.7rem 1.6rem;
  text-decoration: none;
  font-weight: 600;
  font-size: 0.83rem;
  margin-top: 0.5rem;
  box-shadow: 0 15px 35px rgba(0, 0, 0, 0.25);
  transition: transform 0.2s ease;
}

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

.closing-note {
  font-size: 0.7rem;
  margin-top: 0.4rem;
  color: rgba(255, 255, 255, 0.42);
}

@keyframes breathing-bg {
  0%, 100% { opacity: 0.5; transform: scale(1); }
  50% { opacity: 0.8; transform: scale(1.05); }
}

@media (max-width: 640px) {
  .ereader-closing {
    padding: 3.5rem 1.2rem 4rem;
    min-height: 320px;
  }
  .ereader-closing__content h2 {
    font-size: 2.1rem;
  }
}