@font-face {
  font-family: "Bebas Neue";
  src: url("assets/fonts/bebas-neue.woff2") format("woff2");
  font-style: normal;
  font-weight: 400;
  font-display: swap;
}

@font-face {
  font-family: "Roboto";
  src: url("assets/fonts/roboto-variable.woff2") format("woff2");
  font-style: normal;
  font-weight: 100 900;
  font-display: swap;
}

:root {
  --ink: #070b0b;
  --ink-soft: #101717;
  --paper: #f4f7f5;
  --white: #ffffff;
  --muted: #aebcbc;
  --line: #d9e3e1;
  --turquoise: #18d7d1;
  --turquoise-dark: #06aaa7;
  --turquoise-pale: #bcf4f1;
  --shadow: 0 30px 90px rgba(0, 22, 22, 0.16);
  --radius: 24px;
  --header-height: 78px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-height);
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: "Roboto", Arial, sans-serif;
  font-size: 1rem;
  line-height: 1.65;
  text-rendering: optimizeLegibility;
}

body.dialog-open {
  overflow: hidden;
}

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

a {
  color: inherit;
}

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

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

.skip-link {
  position: fixed;
  z-index: 9999;
  top: 8px;
  left: 8px;
  padding: 10px 16px;
  color: var(--ink);
  background: var(--turquoise);
  transform: translateY(-150%);
  transition: transform 0.2s ease;
}

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

.container {
  width: min(1180px, calc(100% - 40px));
  margin-inline: auto;
}

.reading-width {
  width: min(760px, calc(100% - 40px));
  margin-inline: auto;
}

.section {
  position: relative;
  padding: 110px 0;
  overflow: hidden;
}

.dark-section {
  color: var(--white);
  background: var(--ink);
}

.centered {
  text-align: center;
}

.site-header {
  position: fixed;
  z-index: 1000;
  inset: 0 0 auto;
  height: var(--header-height);
  color: var(--white);
  background: rgba(7, 11, 11, 0.92);
  border-bottom: 1px solid rgba(255, 255, 255, 0.09);
  backdrop-filter: blur(16px);
}

.header-inner {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  flex: 0 0 auto;
  display: block;
}

.brand img {
  width: 210px;
  height: auto;
}

.cta-button,
.secondary-button {
  min-height: 54px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 15px 26px;
  border: 2px solid var(--turquoise);
  border-radius: 999px;
  color: var(--ink);
  background: var(--turquoise);
  box-shadow: 0 10px 34px rgba(24, 215, 209, 0.2);
  font-family: "Roboto", Arial, sans-serif;
  font-size: 0.84rem;
  font-weight: 900;
  line-height: 1.15;
  letter-spacing: 0.045em;
  text-align: center;
  text-decoration: none;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.cta-button:hover,
.cta-button:focus-visible,
.secondary-button:hover,
.secondary-button:focus-visible {
  background: #52eee8;
  box-shadow: 0 14px 42px rgba(24, 215, 209, 0.34);
  transform: translateY(-2px);
}

.cta-button:focus-visible,
.secondary-button:focus-visible,
button:focus-visible,
summary:focus-visible,
a:focus-visible {
  outline: 3px solid var(--white);
  outline-offset: 3px;
}

.cta-button--header {
  min-height: 42px;
  max-width: 330px;
  padding: 10px 20px;
  font-size: 0.7rem;
}

.hero {
  min-height: 850px;
  padding: calc(var(--header-height) + 64px) 0 76px;
  display: flex;
  align-items: center;
  overflow: hidden;
  isolation: isolate;
}

.hero::before {
  content: "";
  position: absolute;
  z-index: -2;
  inset: 0;
  background:
    radial-gradient(circle at 72% 45%, rgba(24, 215, 209, 0.22), transparent 24%),
    linear-gradient(110deg, transparent 0 60%, rgba(24, 215, 209, 0.05) 60% 60.2%, transparent 60.2% 100%),
    repeating-linear-gradient(90deg, transparent 0 9.95%, rgba(255, 255, 255, 0.035) 10%),
    var(--ink);
}

.hero::after {
  content: "2500 ANOS DE IDEIAS";
  position: absolute;
  z-index: -1;
  right: -25px;
  bottom: 6px;
  color: rgba(255, 255, 255, 0.035);
  font-family: "Bebas Neue", sans-serif;
  font-size: clamp(5rem, 12vw, 11rem);
  line-height: 0.8;
  letter-spacing: 0.025em;
  white-space: nowrap;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(360px, 0.8fr);
  align-items: center;
  gap: 54px;
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--turquoise);
  font-size: 0.76rem;
  font-weight: 900;
  line-height: 1.3;
  letter-spacing: 0.18em;
}

.eyebrow--dark {
  color: var(--ink);
}

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

h1,
h2,
h3 {
  text-wrap: balance;
}

h1,
h2 {
  font-family: "Bebas Neue", "Arial Narrow", sans-serif;
  font-weight: 400;
  letter-spacing: 0.012em;
}

h1 {
  max-width: 760px;
  margin-bottom: 26px;
  font-size: clamp(4rem, 6vw, 6.4rem);
  line-height: 0.91;
}

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

h2 {
  margin-bottom: 26px;
  font-size: clamp(3rem, 5vw, 5.4rem);
  line-height: 0.94;
}

h3 {
  line-height: 1.12;
}

.hero-copy > p:not(.eyebrow):not(.cta-note) {
  max-width: 700px;
  color: #c9d4d3;
}

.hero-lead {
  font-size: 1.22rem;
  line-height: 1.55;
}

.check-list {
  margin: 26px 0 34px;
  padding: 0;
  list-style: none;
}

.check-list li {
  position: relative;
  margin: 10px 0;
  padding-left: 30px;
}

.check-list li::before {
  content: "✓";
  position: absolute;
  top: -1px;
  left: 0;
  color: var(--turquoise);
  font-weight: 900;
}

.cta-group {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 12px;
}

.cta-group.centered {
  align-items: center;
}

.cta-note {
  margin: 0;
  color: var(--muted);
  font-size: 0.79rem;
  line-height: 1.4;
}

.cta-note span {
  padding-inline: 5px;
  color: var(--turquoise);
}

.hero-portrait {
  position: relative;
  min-height: 620px;
  display: flex;
  align-items: flex-end;
  justify-content: center;
}

.hero-portrait img {
  position: relative;
  z-index: 3;
  width: min(560px, 110%);
  height: auto;
  filter: drop-shadow(0 24px 54px rgba(0, 0, 0, 0.46));
}

.portrait-orbit {
  position: absolute;
  z-index: 1;
  top: 50%;
  left: 50%;
  width: 500px;
  aspect-ratio: 1;
  border: 1px solid rgba(24, 215, 209, 0.65);
  border-radius: 50%;
  transform: translate(-50%, -45%);
}

.portrait-orbit::before,
.portrait-orbit::after {
  content: "";
  position: absolute;
  border: 1px solid rgba(24, 215, 209, 0.15);
  border-radius: 50%;
}

.portrait-orbit::before {
  inset: 32px;
}

.portrait-orbit::after {
  inset: 80px;
}

.hero-caption {
  position: absolute;
  z-index: 5;
  right: -4px;
  bottom: 76px;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 13px 16px;
  color: var(--ink);
  background: var(--turquoise);
  box-shadow: 10px 10px 0 rgba(255, 255, 255, 0.08);
  transform: rotate(-2deg);
}

.hero-caption span {
  font-family: "Bebas Neue", sans-serif;
  font-size: 3.2rem;
  line-height: 0.8;
}

.hero-caption small {
  font-size: 0.68rem;
  font-weight: 900;
  line-height: 1.15;
  letter-spacing: 0.08em;
}

.hero-course-frames {
  position: absolute;
  z-index: -1;
  inset: 0;
  pointer-events: none;
}

.hero-frame {
  position: absolute;
  width: 260px;
  opacity: 0.13;
  filter: saturate(0.6);
}

.hero-frame--one {
  top: 135px;
  right: -88px;
  transform: rotate(8deg);
}

.hero-frame--two {
  right: 21%;
  bottom: -122px;
  transform: rotate(-8deg);
}

.hero-frame--three {
  top: 190px;
  left: -120px;
  transform: rotate(10deg);
}

.authority {
  padding: 36px 0 40px;
  color: var(--ink);
  background: var(--turquoise);
}

.authority-inner > p {
  margin: 0 0 24px;
  font-size: 0.75rem;
  font-weight: 900;
  letter-spacing: 0.14em;
  text-align: center;
}

.authority-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
}

.authority-stats > div {
  padding: 0 24px;
  text-align: center;
  border-right: 1px solid rgba(7, 11, 11, 0.28);
}

.authority-stats > div:last-child {
  border-right: 0;
}

.authority-stats strong {
  display: block;
  font-family: "Bebas Neue", sans-serif;
  font-size: 2.2rem;
  font-weight: 400;
  line-height: 1;
}

.authority-stats span {
  display: block;
  margin-top: 4px;
  font-size: 0.78rem;
  font-weight: 700;
}

.problem-section {
  min-height: 800px;
  display: flex;
  align-items: center;
  background:
    linear-gradient(rgba(7, 11, 11, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(7, 11, 11, 0.04) 1px, transparent 1px),
    var(--paper);
  background-size: 36px 36px;
}

.problem-section .reading-width {
  position: relative;
  z-index: 2;
  padding: 44px 52px;
  background: rgba(244, 247, 245, 0.9);
  box-shadow: var(--shadow);
  border: 1px solid rgba(7, 11, 11, 0.08);
}

.problem-section h2 {
  font-size: clamp(3rem, 5.6vw, 5.8rem);
}

.emphasis-line {
  margin: 34px 0 0;
  padding: 22px 0 0 26px;
  border-top: 1px solid var(--line);
  border-left: 5px solid var(--turquoise);
  font-weight: 700;
}

.fragment {
  position: absolute;
  z-index: 1;
  display: grid;
  place-items: center;
  color: var(--ink);
  background: var(--turquoise);
  box-shadow: 10px 12px 0 var(--ink);
  font-family: "Bebas Neue", sans-serif;
  text-align: center;
}

.fragment--book {
  top: 150px;
  left: 5%;
  width: 120px;
  height: 160px;
  font-size: 1.8rem;
  transform: rotate(-9deg);
}

.fragment--note {
  right: 6%;
  bottom: 110px;
  width: 150px;
  height: 125px;
  font-size: 1.45rem;
  line-height: 1;
  transform: rotate(7deg);
}

.fragment--play {
  top: 150px;
  right: 8%;
  width: 90px;
  aspect-ratio: 1;
  border-radius: 50%;
  font-size: 2rem;
  transform: rotate(4deg);
}

.split-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  align-items: center;
  gap: 80px;
}

.solution-section {
  background:
    radial-gradient(circle at 0 100%, rgba(24, 215, 209, 0.12), transparent 32%),
    var(--ink);
}

.solution-copy p:not(.eyebrow) {
  color: #c4cfce;
}

.solution-copy .turquoise-line {
  margin-top: 34px;
  padding: 20px 22px;
  color: var(--ink);
  background: var(--turquoise);
  font-weight: 900;
}

.mini-timeline {
  position: relative;
  padding: 26px 0;
}

.timeline-axis {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 36px;
  width: 1px;
  background: linear-gradient(var(--turquoise), rgba(24, 215, 209, 0.18));
}

.mini-timeline article {
  position: relative;
  display: grid;
  grid-template-columns: 74px 1fr;
  align-items: center;
  gap: 20px;
  min-height: 125px;
  padding: 18px 20px 18px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.09);
}

.mini-timeline article > span {
  position: relative;
  z-index: 2;
  width: 72px;
  aspect-ratio: 1;
  display: grid;
  place-items: center;
  border: 1px solid var(--turquoise);
  border-radius: 50%;
  color: var(--turquoise);
  background: var(--ink);
  font-family: "Bebas Neue", sans-serif;
  font-size: 2.2rem;
}

.mini-timeline small {
  color: var(--muted);
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.mini-timeline h3 {
  margin: 0;
  color: var(--white);
  font-family: "Bebas Neue", sans-serif;
  font-size: 2.2rem;
  font-weight: 400;
}

.mini-timeline p {
  margin: 0;
  color: var(--muted);
  font-size: 0.86rem;
}

.section-heading {
  max-width: 900px;
  margin-bottom: 54px;
}

.section-heading.centered {
  margin-inline: auto;
}

.section-heading p:last-child {
  color: var(--muted);
}

.demo-section {
  background: var(--white);
}

.video-shell {
  max-width: 980px;
  margin: 0 auto;
  padding: 10px;
  color: var(--white);
  background: var(--ink);
  border-radius: 18px;
  box-shadow: var(--shadow);
}

.video-topbar {
  min-height: 38px;
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 0 8px;
}

.video-topbar span {
  width: 8px;
  aspect-ratio: 1;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.22);
}

.video-topbar span:first-child {
  background: var(--turquoise);
}

.video-topbar p {
  margin: 0 0 0 auto;
  color: var(--muted);
  font-size: 0.62rem;
  font-weight: 700;
  letter-spacing: 0.11em;
}

.video-shell video {
  width: 100%;
  aspect-ratio: 16 / 9;
  background: #000;
  border-radius: 10px;
}

.video-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 10px 4px;
  color: var(--muted);
  font-size: 0.68rem;
  font-weight: 900;
  letter-spacing: 0.12em;
}

.video-meta strong {
  color: var(--turquoise);
}

.demo-copy {
  padding-top: 38px;
  text-align: center;
}

.demo-copy .cta-group {
  margin-top: 34px;
}

.journey-section {
  background:
    linear-gradient(90deg, transparent calc(50% - 1px), rgba(24, 215, 209, 0.2) 50%, transparent calc(50% + 1px)),
    var(--ink);
}

.era-timeline {
  position: relative;
}

.era-card {
  min-height: 430px;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  align-items: center;
  gap: 70px;
  padding: 38px 0;
}

.era-card:nth-child(even) img {
  order: 2;
}

.era-card > img {
  width: min(500px, 100%);
  border: 1px solid rgba(24, 215, 209, 0.3);
  box-shadow: 20px 20px 0 rgba(24, 215, 209, 0.06);
}

.era-copy {
  position: relative;
}

.era-number {
  display: block;
  margin-bottom: -24px;
  color: rgba(24, 215, 209, 0.12);
  font-family: "Bebas Neue", sans-serif;
  font-size: 8rem;
  line-height: 0.8;
}

.era-label {
  margin-bottom: 10px;
  color: var(--turquoise);
  font-size: 0.72rem;
  font-weight: 900;
  letter-spacing: 0.16em;
}

.era-copy h3 {
  margin: 0 0 16px;
  color: var(--white);
  font-family: "Bebas Neue", sans-serif;
  font-size: clamp(2.5rem, 4vw, 4.2rem);
  font-weight: 400;
}

.era-copy p:last-child {
  color: var(--muted);
}

.journey-section .cta-group {
  margin-top: 52px;
}

.transformation-section {
  background:
    radial-gradient(circle at 100% 0, var(--turquoise-pale), transparent 28%),
    var(--paper);
}

.benefit-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.benefit-grid li {
  min-height: 112px;
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 24px;
  background: var(--white);
  border: 1px solid var(--line);
  font-weight: 700;
}

.benefit-grid li:last-child {
  grid-column: 1 / -1;
}

.benefit-grid span {
  flex: 0 0 54px;
  color: var(--turquoise-dark);
  font-family: "Bebas Neue", sans-serif;
  font-size: 2.4rem;
  line-height: 1;
}

.manifesto {
  margin: 64px 0 0;
  padding: 38px;
  color: var(--white);
  background: var(--ink);
  border-left: 8px solid var(--turquoise);
  font-family: "Bebas Neue", sans-serif;
  font-size: clamp(2rem, 4vw, 3.5rem);
  line-height: 1.05;
  text-align: center;
}

.audience-section {
  color: var(--ink);
  background: var(--turquoise);
}

.audience-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.audience-card {
  min-height: 280px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-end;
  padding: 26px;
  background: var(--white);
  text-align: center;
}

.audience-card img {
  width: 150px;
  margin: auto auto 20px;
}

.audience-card p {
  margin: 0;
  font-weight: 800;
  line-height: 1.45;
}

.audience-card--text {
  justify-content: center;
  color: var(--white);
  background: var(--ink);
}

.audience-card--text span {
  margin-bottom: 18px;
  color: var(--turquoise);
  font-family: "Bebas Neue", sans-serif;
  font-size: 3.6rem;
  line-height: 0.9;
}

.audience-notes {
  margin-top: 22px;
  padding: 30px 34px;
  color: var(--white);
  background: var(--ink);
}

.audience-notes p:last-child {
  margin-bottom: 0;
  color: var(--turquoise);
}

.experience-section {
  background: var(--white);
}

.split-grid--experience {
  gap: 60px;
}

.experience-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 28px;
}

.experience-tags span {
  padding: 7px 11px;
  color: var(--ink);
  background: var(--turquoise-pale);
  font-size: 0.65rem;
  font-weight: 900;
  letter-spacing: 0.1em;
}

.device-stage {
  position: relative;
  min-height: 500px;
  display: flex;
  align-items: center;
}

.desktop-device {
  width: 100%;
  overflow: hidden;
  color: var(--white);
  background: var(--ink);
  border: 8px solid var(--ink);
  border-radius: 18px;
  box-shadow: var(--shadow);
  transform: perspective(1000px) rotateY(-4deg) rotateX(2deg);
}

.device-bar {
  height: 32px;
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 0 8px;
  color: var(--muted);
  font-size: 0.57rem;
}

.device-bar i {
  width: 6px;
  aspect-ratio: 1;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.25);
}

.device-bar i:first-child {
  background: var(--turquoise);
}

.device-bar b {
  margin-left: auto;
  font-weight: 500;
}

.course-ui {
  min-height: 320px;
  display: grid;
  grid-template-columns: 96px 1fr;
  background: #101717;
}

.course-ui aside {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 16px 10px;
  background: #0a0e0e;
  font-size: 0.47rem;
  text-transform: uppercase;
}

.course-ui aside img {
  width: 28px;
  margin-bottom: 12px;
}

.course-ui-main {
  padding: 14px;
}

.lesson-hero {
  overflow: hidden;
  aspect-ratio: 16 / 8;
  border-radius: 6px;
}

.lesson-hero img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.course-ui-main > p {
  margin: 12px 0 8px;
  font-size: 0.58rem;
  font-weight: 800;
}

.lesson-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 7px;
}

.lesson-row img {
  width: 100%;
  border: 1px solid rgba(24, 215, 209, 0.28);
}

.phone-device {
  position: absolute;
  right: -18px;
  bottom: 4px;
  width: 158px;
  min-height: 310px;
  padding: 18px 9px 14px;
  display: flex;
  flex-direction: column;
  color: var(--white);
  background: var(--ink);
  border: 5px solid #202929;
  border-radius: 26px;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.32);
  transform: rotate(4deg);
}

.phone-notch {
  position: absolute;
  top: 5px;
  left: 50%;
  width: 58px;
  height: 7px;
  border-radius: 99px;
  background: #202929;
  transform: translateX(-50%);
}

.phone-device img {
  width: 100%;
  margin: 8px 0 16px;
  border-radius: 8px;
}

.phone-device strong {
  color: var(--turquoise);
  font-family: "Bebas Neue", sans-serif;
  font-size: 1.55rem;
  font-weight: 400;
}

.phone-device span {
  color: var(--muted);
  font-size: 0.56rem;
}

.differentials-section {
  background:
    linear-gradient(rgba(7, 11, 11, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(7, 11, 11, 0.035) 1px, transparent 1px),
    var(--paper);
  background-size: 32px 32px;
}

.differential-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
}

.differential-card {
  min-height: 260px;
  padding: 28px;
  background: var(--white);
  border: 1px solid var(--line);
  transition: transform 0.2s ease, border-color 0.2s ease;
}

.differential-card:hover {
  border-color: var(--turquoise-dark);
  transform: translateY(-5px);
}

.differential-card > span {
  width: 56px;
  aspect-ratio: 1;
  display: grid;
  place-items: center;
  margin-bottom: 38px;
  color: var(--ink);
  background: var(--turquoise);
  border-radius: 50%;
  font-family: "Bebas Neue", sans-serif;
  font-size: 1.7rem;
}

.differential-card h3 {
  margin-bottom: 10px;
  font-family: "Bebas Neue", sans-serif;
  font-size: 1.8rem;
  font-weight: 400;
}

.differential-card p {
  margin: 0;
  color: #4d5b5a;
  font-size: 0.88rem;
}

.testimonials-section {
  background:
    radial-gradient(circle at 50% 0, rgba(24, 215, 209, 0.12), transparent 30%),
    var(--ink);
}

.testimonial-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.testimonial-card {
  padding: 0;
  overflow: hidden;
  color: var(--white);
  background: #111818;
  border: 1px solid rgba(255, 255, 255, 0.1);
  cursor: pointer;
  text-align: left;
  transition: transform 0.2s ease, border-color 0.2s ease;
}

.testimonial-card:hover {
  border-color: var(--turquoise);
  transform: translateY(-4px);
}

.thumb {
  position: relative;
  display: block;
  overflow: hidden;
  aspect-ratio: 16 / 9;
}

.thumb::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(transparent, rgba(0, 0, 0, 0.18));
}

.thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.35s ease;
}

.testimonial-card:hover .thumb img {
  transform: scale(1.025);
}

.thumb i {
  position: absolute;
  z-index: 2;
  top: 50%;
  left: 50%;
  width: 58px;
  aspect-ratio: 1;
  display: grid;
  place-items: center;
  padding-left: 4px;
  color: var(--ink);
  background: var(--turquoise);
  border-radius: 50%;
  font-style: normal;
  transform: translate(-50%, -50%);
}

.testimonial-info {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 16px 18px;
}

.testimonial-info strong {
  font-size: 0.88rem;
}

.testimonial-info small {
  color: var(--turquoise);
  font-size: 0.74rem;
  font-weight: 800;
}

.testimonials-section .cta-group {
  margin-top: 48px;
}

.teacher-section {
  position: relative;
  overflow: hidden;
  color: var(--ink);
  background: var(--turquoise);
}

.teacher-grid {
  min-height: 720px;
  display: grid;
  grid-template-columns: 0.82fr 1.18fr;
  align-items: end;
  gap: 70px;
}

.teacher-portrait {
  position: relative;
  min-height: 660px;
  display: flex;
  align-items: flex-end;
  justify-content: center;
}

.teacher-portrait::before {
  content: "";
  position: absolute;
  width: 510px;
  aspect-ratio: 1;
  bottom: 50px;
  border: 1px solid rgba(7, 11, 11, 0.25);
  border-radius: 50%;
}

.teacher-portrait img {
  position: relative;
  z-index: 2;
  width: 560px;
  filter: drop-shadow(0 28px 46px rgba(0, 0, 0, 0.16));
}

.teacher-outline {
  position: absolute;
  z-index: 0;
  bottom: 180px;
  left: -30px;
  color: transparent;
  -webkit-text-stroke: 1px rgba(7, 11, 11, 0.22);
  font-family: "Bebas Neue", sans-serif;
  font-size: 9rem;
  line-height: 0.8;
  writing-mode: vertical-rl;
  transform: rotate(180deg);
}

.teacher-copy {
  align-self: center;
  padding: 80px 0;
}

.teacher-copy h2 {
  font-size: clamp(4.2rem, 7vw, 7rem);
}

.teacher-copy p:not(.eyebrow) {
  max-width: 660px;
  font-weight: 500;
}

.offer-section {
  background: #eaf0ee;
}

.offer-card {
  display: grid;
  grid-template-columns: 0.88fr 1.12fr;
  align-items: center;
  overflow: hidden;
  background: var(--white);
  box-shadow: var(--shadow);
}

.offer-visual {
  position: relative;
  min-height: 760px;
  display: grid;
  place-items: center;
  padding: 60px;
  background:
    radial-gradient(circle at 50% 35%, rgba(24, 215, 209, 0.22), transparent 42%),
    var(--ink);
}

.course-box {
  position: relative;
  z-index: 2;
  width: min(340px, 100%);
  overflow: hidden;
  background: #111818;
  border: 1px solid rgba(24, 215, 209, 0.45);
  box-shadow: 26px 28px 0 rgba(24, 215, 209, 0.13), 0 30px 60px rgba(0, 0, 0, 0.35);
  transform: rotate(-2deg);
}

.course-box > img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.course-box > div {
  display: flex;
  flex-direction: column;
  padding: 30px;
  color: var(--white);
}

.course-box small,
.course-box span {
  color: var(--turquoise);
  font-size: 0.65rem;
  font-weight: 900;
  letter-spacing: 0.14em;
}

.course-box strong {
  margin: 8px 0 16px;
  font-family: "Bebas Neue", sans-serif;
  font-size: 3rem;
  font-weight: 400;
  line-height: 0.88;
}

.course-card-stack {
  position: absolute;
  z-index: 1;
  inset: auto 18px 22px auto;
  width: 150px;
}

.course-card-stack img {
  position: absolute;
  bottom: 0;
  width: 100%;
  border: 1px solid rgba(24, 215, 209, 0.3);
}

.course-card-stack img:nth-child(1) { transform: translate(-50px, -20px) rotate(-8deg); }
.course-card-stack img:nth-child(2) { transform: translate(-15px, -8px) rotate(-2deg); }
.course-card-stack img:nth-child(3) { transform: translate(20px, 5px) rotate(5deg); }

.offer-copy {
  padding: 60px 64px;
}

.offer-copy h2 {
  font-size: clamp(3rem, 4.8vw, 4.8rem);
}

.offer-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  column-gap: 26px;
  margin-bottom: 0;
}

.offer-list li {
  margin: 7px 0;
  font-size: 0.88rem;
  line-height: 1.45;
}

.price-card {
  margin-top: 20px;
  padding: 60px;
  color: var(--white);
  background: var(--ink);
  box-shadow: var(--shadow);
}

.price-copy {
  max-width: 760px;
  margin: 0 auto 34px;
  text-align: center;
}

.price-values {
  display: flex;
  align-items: stretch;
  justify-content: center;
  gap: 34px;
  margin-bottom: 14px;
}

.price-values p {
  min-width: 220px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  margin: 0;
  text-align: center;
}

.price-values span {
  color: var(--muted);
  font-size: 0.76rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.price-values strong {
  color: var(--turquoise);
  font-family: "Bebas Neue", sans-serif;
  font-size: 4.8rem;
  font-weight: 400;
  line-height: 1;
}

.price-divider {
  position: relative;
  width: 1px;
  min-height: 106px;
  background: rgba(255, 255, 255, 0.14);
}

.price-divider span {
  position: absolute;
  top: 50%;
  left: 50%;
  padding: 6px;
  color: var(--muted);
  background: var(--ink);
  font-size: 0.66rem;
  transform: translate(-50%, -50%);
}

.price-disclaimer {
  margin: 0 0 34px;
  color: var(--muted);
  font-size: 0.72rem;
  text-align: center;
}

.lock-icon {
  display: inline-block;
  width: 10px;
  height: 10px;
  padding: 0 !important;
  border-radius: 50%;
  color: transparent !important;
  background: var(--turquoise);
}

.guarantee-section {
  background: var(--white);
}

.guarantee-grid {
  display: grid;
  grid-template-columns: 340px 1fr;
  align-items: center;
  gap: 90px;
}

.guarantee-seal {
  position: relative;
  width: 300px;
  aspect-ratio: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: var(--ink);
  background: var(--turquoise);
  border: 10px solid var(--ink);
  border-radius: 50%;
  box-shadow: 0 0 0 12px var(--turquoise), 0 0 0 13px var(--ink);
  transform: rotate(-5deg);
}

.guarantee-seal::before,
.guarantee-seal::after {
  content: "✦";
  position: absolute;
  top: 50%;
  font-size: 1.3rem;
  transform: translateY(-50%);
}

.guarantee-seal::before { left: 28px; }
.guarantee-seal::after { right: 28px; }

.guarantee-seal span {
  font-family: "Bebas Neue", sans-serif;
  font-size: 7rem;
  line-height: 0.72;
}

.guarantee-seal strong {
  margin-top: 8px;
  font-family: "Bebas Neue", sans-serif;
  font-size: 2.3rem;
  line-height: 1;
}

.guarantee-seal small {
  margin-top: 6px;
  font-size: 0.68rem;
  font-weight: 900;
  letter-spacing: 0.16em;
}

.guarantee-copy .cta-group {
  margin-top: 32px;
}

.faq-section {
  background:
    linear-gradient(rgba(255, 255, 255, 0.025) 1px, transparent 1px),
    var(--ink);
  background-size: 100% 54px;
}

.faq-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  align-items: start;
  gap: 12px;
}

.faq-grid details {
  color: var(--white);
  background: #101717;
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.faq-grid details[open] {
  border-color: var(--turquoise);
}

.faq-grid summary {
  min-height: 76px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 20px 22px;
  cursor: pointer;
  font-weight: 800;
  list-style: none;
}

.faq-grid summary::-webkit-details-marker {
  display: none;
}

.faq-grid summary span {
  flex: 0 0 32px;
  height: 32px;
  display: grid;
  place-items: center;
  color: var(--ink);
  background: var(--turquoise);
  border-radius: 50%;
  font-size: 1.3rem;
  transition: transform 0.2s ease;
}

.faq-grid details[open] summary span {
  transform: rotate(45deg);
}

.faq-grid details p {
  margin: 0;
  padding: 0 22px 24px;
  color: var(--muted);
  font-size: 0.92rem;
}

.closing-section {
  position: relative;
  min-height: 760px;
  display: flex;
  align-items: center;
  padding: 120px 0;
  overflow: hidden;
  background: #050808;
  isolation: isolate;
}

.closing-section::after {
  content: "";
  position: absolute;
  z-index: -1;
  inset: 0;
  background: radial-gradient(circle at 50% 50%, rgba(24, 215, 209, 0.18), transparent 35%);
}

.closing-section h2 {
  font-size: clamp(4rem, 7vw, 7rem);
}

.closing-section .reading-width > p:not(.eyebrow):not(.cta-note) {
  color: #c2cecd;
}

.closing-section .cta-group {
  margin-top: 36px;
}

.closing-frames {
  position: absolute;
  z-index: -2;
  inset: 0;
}

.closing-frames img {
  position: absolute;
  width: 260px;
  opacity: 0.12;
}

.closing-frames img:nth-child(1) { top: -60px; left: -80px; transform: rotate(-7deg); }
.closing-frames img:nth-child(2) { right: -70px; top: 20px; transform: rotate(8deg); }
.closing-frames img:nth-child(3) { left: 5%; bottom: -110px; transform: rotate(6deg); }
.closing-frames img:nth-child(4) { right: 8%; bottom: -120px; transform: rotate(-9deg); }

.site-footer {
  padding: 42px 0 100px;
  color: #7f9190;
  background: var(--ink);
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 18px;
  text-align: center;
}

.footer-inner > img {
  width: 190px;
}

.footer-inner nav {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 10px;
  color: #b3c0bf;
  font-size: 0.8rem;
}

.footer-inner nav a,
.footer-inner nav button {
  padding: 0;
  color: inherit;
  background: transparent;
  border: 0;
  cursor: pointer;
  text-decoration: none;
}

.footer-inner nav a:hover,
.footer-inner nav button:hover {
  color: var(--turquoise);
}

.footer-inner p {
  margin: 0;
  font-size: 0.72rem;
}

.mobile-sticky-cta {
  position: fixed;
  z-index: 990;
  right: 0;
  bottom: 0;
  left: 0;
  display: none;
  padding: 10px max(14px, env(safe-area-inset-right)) max(10px, env(safe-area-inset-bottom)) max(14px, env(safe-area-inset-left));
  background: rgba(7, 11, 11, 0.95);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(14px);
  transform: translateY(110%);
  transition: transform 0.3s ease;
}

.mobile-sticky-cta.is-visible {
  transform: translateY(0);
}

.mobile-sticky-cta .cta-button {
  width: 100%;
  min-height: 48px;
  padding: 12px 16px;
  font-size: 0.72rem;
}

dialog {
  width: min(920px, calc(100% - 30px));
  max-height: calc(100vh - 30px);
  padding: 22px;
  overflow: auto;
  color: var(--white);
  background: var(--ink);
  border: 1px solid var(--turquoise);
  border-radius: 18px;
  box-shadow: 0 30px 100px rgba(0, 0, 0, 0.65);
}

dialog::backdrop {
  background: rgba(0, 0, 0, 0.84);
  backdrop-filter: blur(8px);
}

.dialog-close {
  position: absolute;
  z-index: 2;
  top: 9px;
  right: 9px;
  width: 42px;
  aspect-ratio: 1;
  display: grid;
  place-items: center;
  color: var(--ink);
  background: var(--turquoise);
  border: 0;
  border-radius: 50%;
  cursor: pointer;
  font-size: 1.7rem;
  line-height: 1;
}

.video-dialog h2 {
  margin: 0 56px 18px 0;
  font-size: 2.4rem;
}

.dialog-video {
  overflow: hidden;
  aspect-ratio: 16 / 9;
  background: #000;
  border-radius: 10px;
}

.dialog-video iframe {
  width: 100%;
  height: 100%;
  border: 0;
}

.contact-dialog {
  width: min(620px, calc(100% - 30px));
  padding: 50px;
}

.contact-dialog h2 {
  margin-right: 40px;
}

.contact-dialog p:not(.eyebrow) {
  color: var(--muted);
}

.secondary-button {
  margin-top: 14px;
}

.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.65s ease, transform 0.65s ease;
}

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

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { scroll-behavior: auto !important; transition-duration: 0.01ms !important; animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; }
  .reveal { opacity: 1; transform: none; }
}

@media (max-width: 1024px) {
  .hero-grid { grid-template-columns: 1fr 0.72fr; gap: 20px; }
  .hero-portrait { min-height: 520px; }
  .portrait-orbit { width: 400px; }
  .authority-stats { grid-template-columns: repeat(2, 1fr); gap: 24px 0; }
  .authority-stats > div:nth-child(2) { border-right: 0; }
  .split-grid { gap: 46px; }
  .differential-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .offer-card { grid-template-columns: 0.8fr 1.2fr; }
  .offer-visual { min-height: 700px; padding: 38px; }
  .offer-copy { padding: 50px 40px; }
  .teacher-grid { gap: 30px; }
  .fragment { opacity: 0.4; }
}

@media (max-width: 800px) {
  :root { --header-height: 66px; }
  .container, .reading-width { width: min(100% - 28px, 680px); }
  .section { padding: 78px 0; }
  .brand img { width: 145px; }
  .cta-button--header { max-width: 180px; min-height: 38px; padding: 8px 12px; font-size: 0.56rem; }
  .hero { min-height: auto; padding-top: calc(var(--header-height) + 58px); }
  .hero-grid { grid-template-columns: 1fr; }
  .hero-copy { position: relative; z-index: 4; }
  .hero-portrait { min-height: 440px; margin-top: -10px; }
  .hero-portrait img { width: 430px; }
  .portrait-orbit { width: 390px; }
  .hero-caption { right: 8%; bottom: 36px; }
  .hero-frame--one { top: 48%; right: -95px; }
  .hero-frame--two { right: auto; left: -110px; bottom: 10%; }
  .hero-frame--three { display: none; }
  .authority-stats strong { font-size: 1.9rem; }
  .problem-section .reading-width { padding: 34px 28px; }
  .fragment { display: none; }
  .split-grid { grid-template-columns: 1fr; }
  .mini-timeline { margin-top: 20px; }
  .era-card { grid-template-columns: 1fr; gap: 28px; padding: 46px 0; }
  .era-card:nth-child(even) img { order: 0; }
  .era-card > img { width: min(500px, 90%); margin-inline: auto; }
  .benefit-grid { grid-template-columns: 1fr; }
  .benefit-grid li:last-child { grid-column: auto; }
  .audience-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .device-stage { min-height: 440px; }
  .testimonial-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .teacher-grid { grid-template-columns: 1fr; min-height: auto; }
  .teacher-portrait { min-height: 480px; order: 2; }
  .teacher-portrait img { width: 450px; }
  .teacher-copy { padding: 72px 0 0; }
  .offer-card { grid-template-columns: 1fr; }
  .offer-visual { min-height: 560px; }
  .offer-list { grid-template-columns: 1fr; }
  .price-card { padding: 48px 28px; }
  .guarantee-grid { grid-template-columns: 1fr; gap: 60px; }
  .guarantee-seal { margin-inline: auto; }
  .faq-grid { grid-template-columns: 1fr; }
  .mobile-sticky-cta { display: block; }
  .site-footer { padding-bottom: 112px; }
}

@media (max-width: 560px) {
  body { font-size: 0.98rem; }
  h1 { font-size: clamp(3.55rem, 18vw, 5rem); }
  h2 { font-size: clamp(2.8rem, 13vw, 4.2rem); }
  .header-inner { gap: 10px; }
  .brand img { width: 120px; }
  .cta-button--header { max-width: 165px; font-size: 0.52rem; letter-spacing: 0.02em; }
  .cta-button { width: 100%; padding-inline: 18px; font-size: 0.75rem; }
  .hero { padding-bottom: 38px; }
  .hero-lead { font-size: 1.08rem; }
  .hero-portrait { min-height: 390px; }
  .hero-portrait img { width: 400px; }
  .portrait-orbit { width: 340px; }
  .hero-caption { right: 0; bottom: 22px; }
  .authority { padding: 30px 0; }
  .authority-stats { gap: 24px 0; }
  .authority-stats > div { padding: 0 10px; }
  .authority-stats strong { font-size: 1.65rem; }
  .authority-stats span { font-size: 0.68rem; }
  .video-shell { padding: 6px; border-radius: 12px; }
  .video-topbar p { display: none; }
  .era-number { font-size: 6rem; }
  .benefit-grid li { padding: 20px; }
  .manifesto { padding: 30px 24px; }
  .audience-grid { grid-template-columns: 1fr; }
  .audience-card { min-height: 240px; }
  .device-stage { min-height: 390px; align-items: flex-start; padding-top: 30px; }
  .desktop-device { transform: none; }
  .course-ui { min-height: 250px; grid-template-columns: 70px 1fr; }
  .phone-device { right: 4px; width: 130px; min-height: 260px; }
  .differential-grid, .testimonial-grid { grid-template-columns: 1fr; }
  .differential-card { min-height: auto; }
  .teacher-portrait { min-height: 420px; }
  .teacher-outline { font-size: 7rem; }
  .offer-visual { min-height: 500px; padding: 36px 24px; }
  .offer-copy { padding: 42px 26px; }
  .course-card-stack { width: 115px; }
  .price-values { flex-direction: column; gap: 18px; }
  .price-divider { width: 100%; min-height: 1px; }
  .price-values strong { font-size: 4.1rem; }
  .guarantee-grid { gap: 48px; }
  .guarantee-seal { width: 240px; }
  .guarantee-seal span { font-size: 5.5rem; }
  .closing-section { min-height: 680px; padding: 90px 0; }
  .contact-dialog { padding: 44px 26px 28px; }
}

@supports not (backdrop-filter: blur(10px)) {
  .site-header, .mobile-sticky-cta { background: rgba(7, 11, 11, 0.98); }
}

/* Mobile-first refinement: touch ergonomics, safe areas and lighter rendering. */
html {
  max-width: 100%;
  overflow-x: hidden;
  overflow-x: clip;
}

body {
  min-width: 0;
  max-width: 100%;
  overflow-x: hidden;
  overflow-x: clip;
  overscroll-behavior-x: none;
}

img,
video,
iframe {
  height: auto;
}

a,
button,
summary,
video {
  touch-action: manipulation;
}

.cta-button,
.secondary-button,
.testimonial-card,
.faq-grid summary,
.dialog-close {
  -webkit-user-select: none;
  user-select: none;
}

@media (max-width: 800px) {
  html {
    scroll-padding-top: calc(var(--header-height) + env(safe-area-inset-top));
  }

  .site-header {
    height: calc(var(--header-height) + env(safe-area-inset-top));
    padding-top: env(safe-area-inset-top);
  }

  .header-inner {
    height: var(--header-height);
  }

  .hero {
    padding-top: calc(var(--header-height) + env(safe-area-inset-top) + 44px);
  }

  .section,
  .teacher-section,
  .closing-section {
    content-visibility: auto;
    contain-intrinsic-size: auto 850px;
  }

  .cta-button,
  .secondary-button {
    min-height: 52px;
  }

  .testimonial-card {
    min-height: 48px;
  }

  .faq-grid summary {
    min-height: 72px;
  }

  .mobile-sticky-cta {
    padding-top: 8px;
    padding-right: max(12px, env(safe-area-inset-right));
    padding-bottom: max(8px, env(safe-area-inset-bottom));
    padding-left: max(12px, env(safe-area-inset-left));
  }

  .mobile-sticky-cta .cta-button {
    min-height: 50px;
  }

  .site-footer {
    padding-bottom: calc(106px + env(safe-area-inset-bottom));
  }

  dialog {
    width: calc(100% - 20px);
    max-height: calc(100vh - 20px);
    max-height: calc(100dvh - 20px);
    margin: auto;
    padding: 18px;
    overscroll-behavior: contain;
  }

  .dialog-close {
    top: 8px;
    right: 8px;
    width: 44px;
    min-height: 44px;
  }

  .video-dialog h2 {
    margin-right: 50px;
    font-size: clamp(1.8rem, 8vw, 2.35rem);
  }
}

@media (max-width: 560px) {
  :root {
    --header-height: 62px;
  }

  body {
    font-size: 1rem;
  }

  .container,
  .reading-width {
    width: min(calc(100% - 24px), 520px);
  }

  .section {
    padding: 64px 0;
  }

  .site-header .cta-button--header {
    display: none;
  }

  .header-inner {
    justify-content: center;
  }

  .brand img {
    width: 142px;
  }

  h1 {
    font-size: clamp(3rem, 15vw, 4.25rem);
    line-height: 0.92;
  }

  h2 {
    font-size: clamp(2.55rem, 12vw, 3.65rem);
    line-height: 0.96;
  }

  h1,
  h2,
  h3,
  .cta-button,
  .faq-grid summary {
    overflow-wrap: break-word;
    hyphens: auto;
  }

  .section-heading {
    margin-bottom: 36px;
  }

  .eyebrow {
    letter-spacing: 0.13em;
  }

  .hero {
    padding-top: calc(var(--header-height) + env(safe-area-inset-top) + 36px);
    padding-bottom: 30px;
  }

  .hero-course-frames,
  .closing-frames {
    display: none;
  }

  .hero-copy > p:not(.eyebrow),
  .problem-section p,
  .solution-copy p,
  .experience-copy p,
  .teacher-copy p,
  .guarantee-copy p,
  .closing-section p {
    line-height: 1.62;
  }

  .hero-list {
    margin-block: 22px 28px;
  }

  .hero-portrait {
    min-height: 340px;
    margin-top: 2px;
  }

  .hero-portrait img {
    width: min(360px, 100%);
  }

  .portrait-orbit {
    width: min(300px, 88vw);
  }

  .hero-caption {
    right: 0;
    bottom: 12px;
    padding: 10px 12px;
  }

  .hero-caption span {
    font-size: 2.7rem;
  }

  .authority {
    padding: 26px 0;
  }

  .authority-inner > p {
    margin-bottom: 24px;
  }

  .problem-section .reading-width {
    padding: 26px 20px;
  }

  .mini-timeline article {
    min-height: 108px;
    grid-template-columns: 58px 1fr;
    padding: 16px 0;
  }

  .mini-timeline article > span {
    width: 54px;
    font-size: 2.5rem;
  }

  .video-shell {
    padding: 5px;
    border-radius: 10px;
  }

  .video-topbar {
    min-height: 32px;
  }

  .video-meta {
    padding: 10px 6px 3px;
    letter-spacing: 0.08em;
  }

  .demo-copy {
    padding-top: 30px;
    text-align: left;
  }

  .demo-copy .cta-group {
    margin-top: 26px;
  }

  .era-card {
    min-height: auto;
    gap: 22px;
    padding: 30px 0;
  }

  .era-card > img {
    width: 100%;
    box-shadow: 10px 10px 0 rgba(24, 215, 209, 0.06);
  }

  .era-number {
    margin-bottom: -16px;
    font-size: 5rem;
  }

  .benefit-grid li {
    min-height: auto;
    gap: 14px;
    padding: 18px;
  }

  .benefit-grid span {
    flex-basis: 44px;
    font-size: 2rem;
  }

  .manifesto {
    margin-top: 42px;
    padding: 26px 20px;
  }

  .audience-card {
    min-height: 220px;
    padding: 22px;
  }

  .audience-card img {
    width: 126px;
  }

  .audience-notes {
    padding: 24px 20px;
  }

  .device-stage {
    min-height: 330px;
    padding-top: 12px;
  }

  .desktop-device {
    width: calc(100% - 20px);
    border-width: 5px;
  }

  .course-ui {
    min-height: 215px;
    grid-template-columns: 58px 1fr;
  }

  .course-ui aside {
    padding-inline: 7px;
  }

  .course-ui-main {
    padding: 9px;
  }

  .phone-device {
    right: 0;
    bottom: 0;
    width: 108px;
    min-height: 218px;
    padding: 16px 7px 10px;
    border-width: 4px;
    border-radius: 18px;
  }

  .phone-device img {
    margin-bottom: 10px;
  }

  .differential-card {
    padding: 24px;
  }

  .testimonial-info {
    min-height: 62px;
    padding: 13px 15px;
  }

  .teacher-portrait {
    min-height: 360px;
  }

  .teacher-portrait img {
    width: min(390px, 100%);
  }

  .teacher-copy {
    padding-top: 54px;
  }

  .offer-visual {
    min-height: 420px;
    padding: 30px 20px;
  }

  .offer-copy {
    padding: 36px 20px;
  }

  .course-box > div {
    padding: 24px;
  }

  .course-box strong {
    font-size: 2.55rem;
  }

  .course-card-stack {
    display: none;
  }

  .price-card {
    padding: 38px 20px;
  }

  .price-values p {
    min-width: 0;
  }

  .price-values strong {
    font-size: 3.85rem;
  }

  .cta-note {
    width: 100%;
    text-align: center;
  }

  .guarantee-seal {
    width: min(220px, 70vw);
  }

  .faq-grid summary {
    min-height: 70px;
    padding: 18px 16px;
    gap: 12px;
    line-height: 1.35;
  }

  .faq-grid details p {
    padding: 0 16px 20px;
  }

  .closing-section {
    min-height: auto;
    padding: 78px 0;
  }

  .footer-inner nav {
    gap: 8px 12px;
    line-height: 1.5;
  }

  .footer-inner nav a,
  .footer-inner nav button {
    min-height: 44px;
    display: inline-flex;
    align-items: center;
  }

  .contact-dialog {
    padding: 48px 20px 24px;
  }

  .secondary-button {
    width: 100%;
  }
}

@media (max-width: 380px) {
  .container,
  .reading-width {
    width: calc(100% - 18px);
  }

  h1 {
    font-size: clamp(2.85rem, 14.5vw, 3.45rem);
  }

  h2 {
    font-size: clamp(2.35rem, 11.5vw, 3rem);
  }

  .cta-button {
    padding-inline: 12px;
    font-size: 0.75rem;
    letter-spacing: 0.025em;
  }

  .authority-stats {
    grid-template-columns: 1fr;
  }

  .authority-stats > div,
  .authority-stats > div:nth-child(2) {
    padding: 14px 8px;
    border-right: 0;
    border-bottom: 1px solid rgba(7, 11, 11, 0.18);
  }

  .authority-stats > div:last-child {
    border-bottom: 0;
  }

  .hero-portrait {
    min-height: 300px;
  }

  .hero-caption small {
    font-size: 0.6rem;
  }

  .experience-tags {
    gap: 6px;
  }

  .experience-tags span {
    font-size: 0.6rem;
  }

  .price-values strong {
    font-size: 3.45rem;
  }

  .mobile-sticky-cta .cta-button {
    min-height: 48px;
    font-size: 0.75rem;
  }
}

@media (max-width: 800px) and (orientation: landscape) and (max-height: 500px) {
  .mobile-sticky-cta {
    padding-top: 5px;
    padding-bottom: max(5px, env(safe-area-inset-bottom));
  }

  .mobile-sticky-cta .cta-button {
    min-height: 44px;
  }
}