:root {
  --bg: #02070e;
  --bg-soft: #07111f;
  --bg-card: #081828;
  --bg-card-2: #0a2036;
  --blue: #1096ff;
  --blue-light: #66c4ff;
  --blue-deep: #0876df;
  --white: #ffffff;
  --text: #e9f1f9;
  --muted: #9eb0c2;
  --border: rgba(41, 164, 255, 0.34);
  --border-soft: rgba(255, 255, 255, 0.09);
  --content-width: 1180px;
  --radius: 10px;
  --shadow-blue: 0 18px 60px rgba(0, 126, 255, 0.2);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 88px;
}

body {
  margin: 0;
  color: var(--text);
  background:
    radial-gradient(circle at 84% 7%, rgba(0, 125, 255, 0.12), transparent 26rem),
    var(--bg);
  font-family: Inter, Montserrat, "Segoe UI", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.65;
  overflow-x: hidden;
}

body.menu-open {
  overflow: hidden;
}

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

a {
  color: inherit;
  text-decoration: none;
}

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

button,
input,
textarea,
select {
  font: inherit;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1,
h2,
h3 {
  color: var(--white);
  line-height: 1.08;
  letter-spacing: -0.035em;
}

h1 {
  max-width: 760px;
  margin-bottom: 22px;
  font-size: clamp(2.75rem, 5.2vw, 5.15rem);
  font-weight: 850;
}

h1 span,
h2 span,
.blue {
  color: var(--blue-light);
}

h2 {
  margin-bottom: 24px;
  font-size: clamp(2rem, 3.2vw, 3.65rem);
  font-weight: 820;
}

h3 {
  margin-bottom: 12px;
  font-size: 1.15rem;
  font-weight: 760;
}

p {
  margin-bottom: 18px;
  color: var(--muted);
}

strong {
  color: var(--white);
}

.container {
  width: min(calc(100% - 48px), var(--content-width));
  margin-inline: auto;
}

.section {
  position: relative;
  padding-block: 120px;
  border-top: 1px solid var(--border-soft);
  overflow: hidden;
}

.section::before {
  position: absolute;
  z-index: -1;
  width: 420px;
  height: 420px;
  border-radius: 50%;
  background: rgba(0, 133, 255, 0.08);
  filter: blur(90px);
  content: "";
  pointer-events: none;
}

.section:nth-of-type(even)::before {
  top: 5%;
  left: -240px;
}

.section:nth-of-type(odd)::before {
  right: -240px;
  bottom: 0;
}

.eyebrow {
  margin-bottom: 14px;
  color: var(--blue-light);
  font-size: 0.8rem;
  font-weight: 800;
  letter-spacing: 0.14em;
  line-height: 1.3;
  text-transform: uppercase;
}

.skip-link {
  position: fixed;
  z-index: 1000;
  top: 12px;
  left: 12px;
  padding: 10px 16px;
  color: #001020;
  background: var(--white);
  border-radius: 6px;
  transform: translateY(-150%);
  transition: transform 180ms ease;
}

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

.site-header {
  position: sticky;
  z-index: 100;
  top: 0;
  padding-block: 10px;
  border-bottom: 1px solid var(--border);
  background: rgba(2, 7, 14, 0.9);
  backdrop-filter: blur(18px);
}

.header-inner {
  display: flex;
  align-items: center;
  min-height: 54px;
  gap: 30px;
}

.brand {
  display: inline-flex;
  flex: 0 0 auto;
  align-items: center;
}

.brand img {
  width: 140px;
  height: auto;
}

.main-nav,
.footer-nav {
  display: flex;
  align-items: center;
  gap: clamp(16px, 2vw, 30px);
}

.main-nav {
  margin-left: auto;
}

.main-nav a,
.footer-nav a {
  position: relative;
  color: #c3d0dc;
  font-size: 0.77rem;
  font-weight: 700;
  letter-spacing: 0.045em;
  text-transform: uppercase;
  transition: color 180ms ease;
}

.main-nav a::after,
.footer-nav a::after {
  position: absolute;
  right: 0;
  bottom: -6px;
  left: 0;
  height: 1px;
  background: var(--blue-light);
  content: "";
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 220ms ease;
}

.main-nav a:hover,
.main-nav a:focus-visible,
.footer-nav a:hover,
.footer-nav a:focus-visible {
  color: var(--white);
}

.main-nav a:hover::after,
.main-nav a:focus-visible::after,
.footer-nav a:hover::after,
.footer-nav a:focus-visible::after {
  transform: scaleX(1);
  transform-origin: left;
}

.button {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 54px;
  padding: 15px 28px;
  color: var(--white);
  background: linear-gradient(180deg, #63c3ff 0%, #168ff0 100%);
  border: 0;
  border-radius: 6px 6px 4px 0;
  box-shadow: 0 12px 34px rgba(0, 133, 255, 0.22);
  clip-path: polygon(0 0, 100% 0, 100% 100%, 9px 100%, 0 calc(100% - 9px));
  cursor: pointer;
  font-size: 0.86rem;
  font-weight: 800;
  letter-spacing: 0.03em;
  line-height: 1.15;
  text-align: center;
  text-transform: uppercase;
  transition:
    transform 220ms cubic-bezier(.2,.7,.2,1),
    box-shadow 220ms ease,
    filter 220ms ease;
}

.button::after {
  margin-left: 12px;
  font-size: 1.1em;
  content: "→";
  transition: transform 220ms ease;
}

.button:hover,
.button:focus-visible {
  box-shadow: 0 18px 44px rgba(0, 151, 255, 0.38);
  filter: brightness(1.1) saturate(1.06);
  transform: translateY(-3px);
}

.button:hover::after,
.button:focus-visible::after {
  transform: translateX(4px);
}

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

.button:focus-visible,
.main-nav a:focus-visible,
.footer-nav a:focus-visible,
.menu-toggle:focus-visible {
  outline: 3px solid rgba(103, 201, 255, 0.72);
  outline-offset: 4px;
}

.button-small {
  min-height: 42px;
  padding: 11px 20px;
  font-size: 0.72rem;
}

.button-large {
  min-width: min(100%, 340px);
}

.header-cta {
  flex: 0 0 auto;
}

.menu-toggle {
  display: none;
  width: 46px;
  height: 42px;
  margin-left: auto;
  padding: 10px;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 6px;
  cursor: pointer;
}

.menu-toggle span {
  display: block;
  width: 100%;
  height: 2px;
  margin-block: 5px;
  background: var(--white);
  transition: transform 180ms ease, opacity 180ms ease;
}

.hero {
  position: relative;
  display: grid;
  align-items: center;
  min-height: min(860px, calc(100vh - 74px));
  padding-block: clamp(80px, 9vw, 138px);
  overflow: hidden;
  border-bottom: 1px solid var(--border);
}

.hero-media,
.hero-overlay {
  position: absolute;
  inset: 0;
}

.hero-media {
  background: url("assets/hero-mente-brilhante.webp") center right / cover no-repeat;
}

.hero-overlay {
  background:
    linear-gradient(90deg, #02070e 0%, rgba(2, 7, 14, 0.98) 30%, rgba(2, 7, 14, 0.75) 55%, rgba(2, 7, 14, 0.2) 82%, rgba(2, 7, 14, 0.38) 100%),
    linear-gradient(0deg, #02070e 0%, transparent 24%, rgba(2, 7, 14, 0.14) 100%);
}

.hero-inner {
  position: relative;
  z-index: 2;
}

.hero-copy {
  width: min(100%, 690px);
}

.hero h2 {
  max-width: 660px;
  margin-bottom: 20px;
  font-size: clamp(1.35rem, 2.1vw, 2rem);
  line-height: 1.2;
}

.hero-description {
  max-width: 660px;
  color: #c2cfdb;
  font-size: 1.05rem;
}

.event-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 26px;
  margin: 32px 0;
}

.event-strip div {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 0.86rem;
}

.event-icon {
  display: inline-grid;
  width: 34px;
  height: 34px;
  place-items: center;
  color: var(--blue-light);
  background: rgba(7, 31, 54, 0.82);
  border: 1px solid var(--border);
  border-radius: 50%;
  font-size: 0.7rem;
  font-weight: 800;
}

.hero-price {
  margin: 13px 0 0 3px;
  color: #ccd9e4;
  font-size: 0.95rem;
}

.hero-price strong {
  color: var(--blue-light);
  font-size: 1.16rem;
}

.split-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: start;
  gap: 46px 72px;
}

.section-copy h2 {
  max-width: 760px;
}

.section-copy p {
  max-width: 720px;
}

.question-panel {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

.question {
  display: flex;
  align-items: center;
  min-height: 88px;
  padding: 20px;
  color: var(--white);
  background: linear-gradient(145deg, rgba(8, 31, 54, 0.94), rgba(3, 14, 25, 0.92));
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: inset 0 1px rgba(255, 255, 255, 0.04);
  font-weight: 730;
}

.question span {
  display: grid;
  flex: 0 0 auto;
  width: 32px;
  height: 32px;
  margin-right: 12px;
  place-items: center;
  color: var(--blue-light);
  border: 1px solid var(--blue);
  border-radius: 50%;
  font-size: 0.7rem;
}

.problem-conclusion {
  grid-column: 1 / -1;
  padding: 28px 32px;
  background: rgba(7, 26, 44, 0.64);
  border-left: 3px solid var(--blue);
}

.problem-conclusion p {
  margin-bottom: 12px;
}

.problem-conclusion strong {
  font-size: clamp(1.25rem, 2vw, 1.65rem);
}

.problem-conclusion strong span {
  color: var(--blue-light);
}

.section-solution,
.section-method,
.section-event {
  background:
    linear-gradient(180deg, rgba(7, 19, 33, 0.74), rgba(2, 7, 14, 0.97)),
    repeating-linear-gradient(90deg, transparent 0 79px, rgba(45, 166, 255, 0.025) 80px);
}

.centered-heading {
  max-width: 900px;
  text-align: center;
}

.centered-heading p:not(.eyebrow) {
  max-width: 820px;
  margin-inline: auto;
}

.step-grid,
.learning-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 405px));
  justify-content: center;
  gap: 24px;
  margin-top: 56px;
}

.step-card,
.learning-card,
.method-card,
.audience-card,
.price-card {
  position: relative;
  background: linear-gradient(145deg, rgba(9, 31, 52, 0.96), rgba(3, 13, 23, 0.97));
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: inset 0 1px rgba(255, 255, 255, 0.04);
  transition: transform 220ms ease, border-color 220ms ease, box-shadow 220ms ease;
}

.step-card:hover,
.learning-card:hover,
.method-card:hover,
.audience-card:hover,
.price-card:hover {
  border-color: rgba(75, 187, 255, 0.72);
  box-shadow: 0 14px 40px rgba(0, 119, 238, 0.12);
  transform: translateY(-4px);
}

.step-card {
  min-height: 210px;
  padding: 34px;
}

.step-number,
.learning-card > span,
.method-card > span,
.audience-card > span {
  display: inline-grid;
  width: 38px;
  height: 38px;
  margin-bottom: 22px;
  place-items: center;
  color: var(--white);
  background: var(--blue-deep);
  border-radius: 50%;
  font-size: 0.76rem;
  font-weight: 850;
}

.step-card h3 {
  font-size: 1.55rem;
  text-transform: uppercase;
}

.learning-layout {
  display: grid;
  grid-template-columns: 0.8fr 1.7fr;
  align-items: center;
  gap: 52px;
  margin-top: 60px;
}

.amplifier-visual {
  position: relative;
  min-height: 400px;
  overflow: hidden;
  background:
    radial-gradient(circle at 54% 44%, rgba(0, 160, 255, 0.26), transparent 7%),
    linear-gradient(145deg, #0b2d42, #05121f 58%, #02070e);
  border: 1px solid var(--border);
  border-radius: 18px;
  box-shadow: var(--shadow-blue);
  transform: perspective(1000px) rotateY(5deg) rotateX(2deg);
}

.amplifier-visual::before,
.amplifier-visual::after {
  position: absolute;
  inset: 36px;
  border: 2px solid rgba(34, 169, 255, 0.62);
  border-radius: 25% 9% 23% 12%;
  content: "";
  transform: rotate(-5deg);
}

.amplifier-visual::after {
  inset: 82px 56px;
  border-color: rgba(67, 205, 255, 0.32);
  transform: rotate(8deg);
}

.board-chip {
  position: absolute;
  z-index: 2;
  top: 50%;
  left: 50%;
  display: grid;
  width: 120px;
  height: 86px;
  place-items: center;
  color: var(--blue-light);
  background: #02070e;
  border: 2px solid var(--blue);
  border-radius: 8px;
  box-shadow: 0 0 40px rgba(0, 153, 255, 0.34);
  font-weight: 900;
  letter-spacing: 0.18em;
  transform: translate(-50%, -50%);
}

.board-cap {
  position: absolute;
  z-index: 2;
  width: 48px;
  height: 90px;
  background: linear-gradient(90deg, #05080b, #1f3850 45%, #05080b);
  border: 1px solid #397aa8;
  border-radius: 7px 7px 12px 12px;
  box-shadow: 0 16px 24px rgba(0, 0, 0, 0.6);
}

.cap-one { top: 56px; left: 58px; }
.cap-two { right: 55px; bottom: 46px; height: 70px; }
.cap-three { top: 56px; right: 54px; height: 58px; }

.board-node {
  position: absolute;
  z-index: 3;
  width: 18px;
  height: 18px;
  background: var(--blue-light);
  border: 4px solid #071623;
  border-radius: 50%;
  box-shadow: 0 0 22px var(--blue);
}

.node-one { left: 28%; bottom: 22%; }
.node-two { top: 25%; left: 44%; }
.node-three { right: 21%; top: 39%; }

.learning-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin-top: 0;
}

.learning-card {
  min-height: 176px;
  padding: 25px;
}

.learning-card > span,
.method-card > span,
.audience-card > span {
  width: 32px;
  height: 32px;
  margin-bottom: 14px;
}

.section-highlight {
  max-width: 980px;
  margin-top: 54px;
  padding: 24px 30px;
  background: linear-gradient(90deg, rgba(6, 42, 71, 0.8), rgba(8, 23, 38, 0.4));
  border: 1px solid var(--border);
  border-radius: var(--radius);
  text-align: center;
}

.section-highlight p {
  margin: 0;
  color: #d8e7f2;
  font-size: 1.08rem;
  font-weight: 650;
}

.section-difference {
  min-height: 720px;
}

.difference-bg,
.closing-bg {
  position: absolute;
  inset: 0;
  z-index: -2;
  background: url("assets/diagnostico-amplificador.webp") center / cover no-repeat;
}

.section-difference::after,
.section-closing::after {
  position: absolute;
  inset: 0;
  z-index: -1;
  background: linear-gradient(90deg, rgba(2, 7, 14, 0.99) 0%, rgba(2, 7, 14, 0.91) 43%, rgba(2, 7, 14, 0.52) 72%, rgba(2, 7, 14, 0.36) 100%);
  content: "";
}

.difference-inner {
  display: grid;
  grid-template-columns: minmax(0, 640px) 1fr;
  align-items: end;
  gap: 70px;
}

.section-difference h3 {
  max-width: 550px;
  color: var(--blue-light);
  font-size: clamp(1.45rem, 2.5vw, 2.2rem);
}

.section-difference p {
  color: #bac9d7;
}

.strong-copy {
  margin-top: 30px;
  padding-left: 20px;
  border-left: 3px solid var(--blue);
}

.diagnostic-tags {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: flex-end;
  gap: 10px;
  padding-bottom: 12px;
}

.diagnostic-tags span {
  padding: 10px 14px;
  color: var(--white);
  background: rgba(3, 18, 31, 0.82);
  border: 1px solid var(--blue);
  border-radius: 6px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.32);
  font-size: 0.74rem;
  font-weight: 800;
  text-transform: uppercase;
}

.method-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 20px;
  margin-top: 56px;
}

.method-card {
  min-height: 230px;
  padding: 28px;
}

.method-card:not(:last-child)::after {
  position: absolute;
  top: 50%;
  right: -17px;
  z-index: 3;
  color: var(--blue-light);
  content: "→";
  font-size: 1.25rem;
  font-weight: 900;
  transform: translateY(-50%);
}

.audience-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 624px));
  justify-content: center;
  gap: 24px;
  margin-top: 54px;
}

.audience-card {
  min-height: 190px;
  padding: 30px;
}

.audience-card-wide {
  grid-column: 1 / -1;
  width: min(100%, 624px);
  justify-self: center;
}

.section-career {
  background: linear-gradient(180deg, #02070e, #06111d);
}

.career-grid {
  display: grid;
  grid-template-columns: 1.04fr 0.96fr;
  align-items: center;
  gap: 72px;
}

.career-image {
  position: relative;
}

.career-image::before {
  position: absolute;
  z-index: -1;
  inset: -18px;
  background: rgba(0, 142, 255, 0.13);
  border: 1px solid var(--border);
  border-radius: 20px;
  content: "";
  transform: rotate(-2deg);
}

.career-image img {
  width: 100%;
  min-height: 520px;
  object-fit: cover;
  border-radius: 14px;
  box-shadow: 0 28px 80px rgba(0, 0, 0, 0.48);
}

.value-list {
  display: grid;
  gap: 10px;
  margin-top: 28px;
}

.value-list span {
  position: relative;
  padding: 14px 18px 14px 48px;
  color: #e0edf7;
  background: rgba(8, 31, 53, 0.72);
  border: 1px solid var(--border);
  border-radius: 7px;
  font-weight: 680;
}

.value-list span::before {
  position: absolute;
  top: 50%;
  left: 17px;
  display: grid;
  width: 21px;
  height: 21px;
  place-items: center;
  color: #00182a;
  background: var(--blue-light);
  border-radius: 50%;
  content: "✓";
  font-size: 0.72rem;
  font-weight: 900;
  transform: translateY(-50%);
}

.section-teacher {
  background:
    radial-gradient(circle at 54% 52%, rgba(28, 141, 255, 0.2), transparent 22rem),
    linear-gradient(180deg, #04101c, #02070e);
}

.teacher-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.8fr 0.65fr;
  align-items: end;
  gap: 42px;
}

.teacher-copy p {
  max-width: 680px;
}

.teacher-portrait {
  position: relative;
  align-self: end;
}

.teacher-portrait img {
  position: relative;
  z-index: 2;
  width: 100%;
  max-height: 620px;
  object-fit: cover;
  object-position: center top;
  border: 1px solid rgba(82, 188, 255, 0.36);
  border-radius: 16px 16px 4px 4px;
  box-shadow: 0 22px 70px rgba(0, 0, 0, 0.48);
}

.portrait-glow {
  position: absolute;
  inset: 10% 4% -3%;
  background: rgba(0, 145, 255, 0.3);
  border-radius: 50%;
  filter: blur(60px);
}

.teacher-stats {
  display: grid;
  align-self: center;
  gap: 14px;
}

.teacher-stats div {
  padding: 20px;
  background: rgba(7, 28, 49, 0.9);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.teacher-stats strong,
.teacher-stats span {
  display: block;
}

.teacher-stats strong {
  margin-bottom: 3px;
  color: var(--blue-light);
  font-size: 1.2rem;
}

.teacher-stats span {
  color: var(--muted);
  font-size: 0.86rem;
}

.materials-grid {
  display: grid;
  grid-template-columns: 1fr 0.8fr 0.56fr;
  align-items: center;
  gap: 36px;
}

.button-materials {
  min-width: 360px;
  margin-top: 12px;
}

.button-materials::after {
  content: "↓";
}

.small-note {
  margin-top: 14px;
  font-size: 0.84rem;
}

.materials-board {
  padding: 30px;
  color: #13283b;
  background: linear-gradient(145deg, #eef7ff, #c9e0f2);
  border-radius: 10px;
  box-shadow: 0 30px 70px rgba(0, 0, 0, 0.35);
  transform: rotate(1deg);
}

.materials-title {
  padding-bottom: 18px;
  border-bottom: 2px solid rgba(5, 67, 112, 0.25);
}

.materials-title span,
.materials-title strong {
  display: block;
}

.materials-title span {
  color: #166a9f;
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.materials-title strong {
  color: #061c2d;
  font-size: 1.7rem;
}

.materials-board ul,
.coming-soon ul {
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
}

.materials-board li {
  display: flex;
  align-items: center;
  margin-block: 9px;
  font-size: 0.9rem;
  font-weight: 650;
}

.materials-board li span {
  width: 17px;
  height: 17px;
  margin-right: 10px;
  border: 2px solid #2c80b3;
  border-radius: 3px;
}

.coming-soon {
  padding: 28px;
  background: linear-gradient(145deg, rgba(8, 38, 65, 0.96), rgba(4, 17, 29, 0.96));
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.coming-soon li {
  position: relative;
  margin-block: 14px;
  padding-left: 24px;
  color: #d1deea;
  font-size: 0.9rem;
}

.coming-soon li::before {
  position: absolute;
  top: 0.65em;
  left: 0;
  width: 8px;
  height: 8px;
  background: var(--blue-light);
  border-radius: 50%;
  box-shadow: 0 0 12px var(--blue);
  content: "";
  transform: translateY(-50%);
}

.info-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
  margin-top: 54px;
}

.info-grid div {
  min-height: 138px;
  padding: 24px;
  background: rgba(7, 27, 47, 0.8);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  text-align: center;
}

.info-grid div:last-child:nth-child(4n + 3) {
  grid-column: 2 / 4;
}

.info-grid dt {
  margin-bottom: 10px;
  color: var(--blue-light);
  font-size: 0.73rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.info-grid dd {
  margin: 0;
  color: var(--white);
  font-size: 1rem;
  font-weight: 720;
  line-height: 1.35;
}

.section-offer {
  background:
    radial-gradient(circle at 50% 35%, rgba(0, 137, 255, 0.2), transparent 30rem),
    #02070e;
}

.pricing-layout {
  display: grid;
  grid-template-columns: minmax(0, 390px) minmax(0, 520px);
  justify-content: center;
  gap: 24px;
  margin-top: 54px;
}

.price-card {
  padding: 30px;
  text-align: center;
}

.price-card p {
  margin-bottom: 6px;
  color: #d6e2ed;
  font-weight: 750;
  text-transform: uppercase;
}

.price-card strong {
  display: block;
  font-size: clamp(2rem, 4vw, 3.4rem);
  line-height: 1;
}

.price-card small {
  font-size: 0.48em;
}

.price-card span {
  display: block;
  margin-top: 12px;
  color: #c7e9ff;
  font-size: 0.8rem;
}

.price-card-featured {
  display: flex;
  flex-direction: column;
  justify-content: center;
  background: linear-gradient(145deg, #178eea, #075daf);
  border-color: #66c9ff;
  box-shadow: 0 24px 68px rgba(0, 126, 255, 0.3);
}

.next-lots > p {
  margin: 0 0 10px;
  color: var(--muted);
  text-align: center;
  font-size: 0.82rem;
  text-transform: uppercase;
}

.next-lots > div {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.next-lots .price-card {
  min-height: 165px;
}

.next-lots .price-card strong {
  font-size: 2.2rem;
}

.offer-action {
  margin-top: 38px;
  text-align: center;
}

.offer-action p {
  margin-bottom: 18px;
  font-size: 0.88rem;
}

.section-closing {
  min-height: 720px;
}

.closing-bg {
  background-image: url("assets/diagnostico-amplificador.webp");
  background-position: center right;
}

.closing-inner {
  position: relative;
  z-index: 2;
}

.closing-inner .section-copy {
  width: min(100%, 650px);
}

.closing-inner p {
  color: #c1ceda;
}

.closing-inner .button {
  margin-top: 18px;
}

.site-footer {
  padding: 50px 0 24px;
  border-top: 1px solid var(--border);
  background: #01050a;
}

.footer-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  padding-bottom: 34px;
}

.footer-bottom {
  padding-top: 22px;
  border-top: 1px solid var(--border-soft);
  text-align: center;
}

.footer-bottom p {
  margin: 0;
  color: #8090a0;
  font-size: 0.78rem;
}

.notice {
  position: fixed;
  z-index: 200;
  right: 24px;
  bottom: 24px;
  display: flex;
  align-items: center;
  max-width: min(420px, calc(100% - 48px));
  padding: 16px 18px;
  color: var(--white);
  background: #09243d;
  border: 1px solid var(--blue);
  border-radius: 8px;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.45);
  opacity: 0;
  pointer-events: none;
  transform: translateY(18px);
  transition: opacity 200ms ease, transform 200ms ease;
}

.notice.is-visible {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

.notice button {
  width: 30px;
  height: 30px;
  margin-left: 16px;
  color: var(--white);
  background: transparent;
  border: 0;
  cursor: pointer;
  font-size: 1.4rem;
}

.js .reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 680ms ease, transform 680ms cubic-bezier(.2,.65,.2,1);
}

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

@media (min-width: 1367px) {
  :root {
    --content-width: 1280px;
  }
}

@media (max-width: 1160px) {
  .main-nav {
    gap: 16px;
  }

  .main-nav a {
    font-size: 0.68rem;
  }

  .teacher-grid {
    grid-template-columns: 1fr 0.78fr;
  }

  .teacher-stats {
    grid-column: 1 / -1;
    grid-template-columns: repeat(3, 1fr);
  }

  .materials-grid {
    grid-template-columns: 1fr 1fr;
  }

  .coming-soon {
    grid-column: 1 / -1;
  }
}

@media (max-width: 980px) {
  .site-header {
    padding-block: 10px;
  }

  .menu-toggle {
    display: block;
  }

  .main-nav {
    position: fixed;
    top: 75px;
    right: 0;
    left: 0;
    display: grid;
    gap: 0;
    padding: 12px 24px 24px;
    background: rgba(2, 7, 14, 0.98);
    border-bottom: 1px solid var(--border);
    opacity: 0;
    pointer-events: none;
    transform: translateY(-12px);
    transition: opacity 180ms ease, transform 180ms ease;
  }

  .main-nav.is-open {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
  }

  .main-nav a {
    padding: 15px 0;
    border-bottom: 1px solid var(--border-soft);
    font-size: 0.78rem;
  }

  .header-cta {
    display: none;
  }

  .menu-toggle[aria-expanded="true"] span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
  }

  .menu-toggle[aria-expanded="true"] span:nth-child(2) {
    opacity: 0;
  }

  .menu-toggle[aria-expanded="true"] span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
  }

  .hero {
    min-height: auto;
    padding: 96px 0 84px;
  }

  .hero-media {
    background-position: 62% center;
  }

  .hero-overlay {
    background: linear-gradient(90deg, #02070e 0%, rgba(2, 7, 14, 0.94) 62%, rgba(2, 7, 14, 0.62) 100%);
  }

  .hero-copy {
    width: min(100%, 650px);
  }

  .split-grid,
  .learning-layout,
  .career-grid,
  .materials-grid {
    grid-template-columns: 1fr;
  }

  .problem-conclusion {
    grid-column: auto;
  }

  .learning-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .amplifier-visual {
    max-width: 640px;
    width: 100%;
    margin-inline: auto;
    transform: none;
  }

  .method-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .method-card:not(:last-child)::after {
    display: none;
  }

  .career-image {
    max-width: 760px;
  }

  .career-image img {
    min-height: 420px;
  }

  .materials-board,
  .coming-soon {
    width: min(100%, 680px);
    justify-self: center;
  }

  .coming-soon {
    grid-column: auto;
  }

  .info-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .info-grid div:last-child:nth-child(4n + 3) {
    grid-column: 1 / -1;
  }
}

@media (max-width: 760px) {
  .container {
    width: min(calc(100% - 32px), var(--content-width));
  }

  .section {
    padding-block: 82px;
  }

  h1 {
    font-size: clamp(2.45rem, 12vw, 4rem);
  }

  h2 {
    font-size: clamp(1.9rem, 8vw, 3rem);
  }

  .hero {
    padding: 76px 0 70px;
  }

  .hero-media {
    inset: 0 -55% 0 0;
    opacity: 0.56;
  }

  .hero-overlay {
    background: linear-gradient(90deg, #02070e 0%, rgba(2, 7, 14, 0.86) 72%, rgba(2, 7, 14, 0.76) 100%);
  }

  .hero-description {
    font-size: 1rem;
  }

  .event-strip {
    display: grid;
    gap: 10px;
  }

  .question-panel,
  .step-grid,
  .learning-grid,
  .method-grid,
  .audience-grid,
  .teacher-stats,
  .info-grid,
  .pricing-layout,
  .next-lots > div {
    grid-template-columns: 1fr;
  }

  .step-card,
  .learning-card,
  .method-card,
  .audience-card {
    min-height: auto;
  }

  .audience-card-wide,
  .info-grid div:last-child:nth-child(4n + 3) {
    grid-column: auto;
  }

  .difference-inner {
    grid-template-columns: 1fr;
    gap: 34px;
  }

  .section-difference::after,
  .section-closing::after {
    background: linear-gradient(90deg, rgba(2, 7, 14, 0.98), rgba(2, 7, 14, 0.8));
  }

  .diagnostic-tags {
    justify-content: flex-start;
  }

  .teacher-grid {
    grid-template-columns: 1fr;
  }

  .teacher-portrait {
    width: min(100%, 470px);
    margin-inline: auto;
  }

  .teacher-stats {
    grid-column: auto;
  }

  .info-grid div {
    min-height: auto;
  }

  .price-card-featured {
    min-height: 210px;
  }

  .footer-top {
    flex-direction: column;
    text-align: center;
  }

  .footer-nav {
    flex-wrap: wrap;
    justify-content: center;
  }
}

@media (max-width: 480px) {
  .section {
    padding-block: 68px;
  }

  .brand img {
    width: 122px;
  }

  .button,
  .button-large,
  .button-materials {
    width: 100%;
    min-width: 0;
  }

  .question,
  .step-card,
  .learning-card,
  .method-card,
  .audience-card,
  .teacher-stats div,
  .materials-board,
  .coming-soon,
  .price-card {
    padding: 22px;
  }

  .amplifier-visual {
    min-height: 330px;
  }

  .career-image img {
    min-height: 340px;
  }

  .footer-nav {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 18px 28px;
  }
}

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

  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  .js .reveal {
    opacity: 1;
    transform: none;
  }
}