:root {
  color-scheme: light dark;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: var(--tg-theme-secondary-bg-color, #f4f6fb);
  color: var(--tg-theme-text-color, #172033);
  font-synthesis: none;
}

html.mini-app-page {
  width: 100%;
  min-width: 100%;
  min-height: 100%;
  overflow-x: hidden;
  background: #0b0d0f;
  color-scheme: dark;
}

* {
  box-sizing: border-box;
}

body {
  min-width: 280px;
  min-height: 100vh;
  margin: 0;
  background:
    radial-gradient(circle at top right, rgba(82, 105, 255, 0.16), transparent 34rem),
    var(--tg-theme-secondary-bg-color, #f4f6fb);
}

button {
  font: inherit;
}

input,
select,
textarea {
  width: 100%;
  margin-top: 7px;
  padding: 12px 13px;
  border: 1px solid var(--tg-theme-section-separator-color, #dfe3ed);
  border-radius: 13px;
  background: var(--tg-theme-bg-color, #ffffff);
  color: var(--tg-theme-text-color, #172033);
  font: inherit;
}

textarea {
  min-height: 150px;
  resize: vertical;
}

.app-shell {
  width: min(100%, 760px);
  min-height: 100vh;
  margin: 0 auto;
  padding: calc(22px + env(safe-area-inset-top)) 18px calc(32px + env(safe-area-inset-bottom));
}

.topbar {
  display: flex;
  align-items: flex-start;
  gap: 12px;
}

.back-button {
  display: grid;
  flex: 0 0 42px;
  width: 42px;
  height: 42px;
  margin-top: 3px;
  padding: 0;
  place-items: center;
  border: 1px solid var(--tg-theme-section-separator-color, #d9deea);
  border-radius: 14px;
  background: var(--tg-theme-bg-color, #ffffff);
  color: var(--tg-theme-text-color, #172033);
  cursor: pointer;
}

.back-button[hidden] {
  display: none;
}

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

.eyebrow {
  margin: 0 0 5px;
  color: var(--tg-theme-accent-text-color, #5269ff);
  font-size: 0.78rem;
  font-weight: 750;
  letter-spacing: 0.09em;
  text-transform: uppercase;
}

h1 {
  margin: 0;
  font-size: clamp(1.7rem, 7vw, 2.35rem);
  line-height: 1.08;
  letter-spacing: -0.035em;
}

.page-subtitle {
  max-width: 600px;
  margin: 14px 0 24px;
  color: var(--tg-theme-subtitle-text-color, #687086);
  font-size: 0.98rem;
  line-height: 1.55;
}

.content {
  display: grid;
  gap: 12px;
}

.course-steps {
  gap: 10px;
}

.course-step {
  overflow: hidden;
  border: 1px solid var(--tg-theme-section-separator-color, #dfe3ed);
  border-radius: 18px;
  background: var(--tg-theme-bg-color, #ffffff);
  box-shadow: 0 10px 26px rgba(29, 42, 75, 0.055);
}

.course-step-toggle {
  display: flex;
  width: 100%;
  min-height: 76px;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 16px 18px;
  border: 0;
  background: transparent;
  color: var(--tg-theme-text-color, #172033);
  text-align: left;
  cursor: pointer;
}

.course-step-title-group {
  display: grid;
  gap: 5px;
  min-width: 0;
}

.course-step-label {
  color: var(--tg-theme-accent-text-color, #5269ff);
  font-size: 0.74rem;
  font-weight: 760;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.course-step-title {
  overflow-wrap: anywhere;
  font-size: 1.08rem;
  font-weight: 760;
  line-height: 1.25;
}

.course-step-arrow {
  display: grid;
  flex: 0 0 34px;
  width: 34px;
  height: 34px;
  place-items: center;
  border-radius: 50%;
  background: rgba(82, 105, 255, 0.1);
  color: var(--tg-theme-accent-text-color, #5269ff);
  font-weight: 800;
}

.step-lessons {
  display: grid;
  gap: 8px;
  padding: 0 14px 14px;
}

.step-lesson {
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr);
  gap: 10px;
  align-items: center;
  width: 100%;
  min-height: 48px;
  padding: 11px 12px;
  border: 1px solid var(--tg-theme-section-separator-color, #dfe3ed);
  border-radius: 13px;
  background: var(--tg-theme-secondary-bg-color, #f4f6fb);
  color: var(--tg-theme-text-color, #172033);
  text-align: left;
  cursor: pointer;
}

.step-lesson-number {
  color: var(--tg-theme-hint-color, #8d95a8);
  font-size: 0.76rem;
  font-weight: 760;
}

.step-lesson-title {
  overflow-wrap: anywhere;
  font-weight: 700;
  line-height: 1.35;
}

.step-empty {
  margin: 0;
  padding: 12px;
  color: var(--tg-theme-subtitle-text-color, #687086);
}

.card {
  position: relative;
  width: 100%;
  padding: 18px 48px 18px 18px;
  overflow: hidden;
  border: 1px solid var(--tg-theme-section-separator-color, #dfe3ed);
  border-radius: 20px;
  background: var(--tg-theme-bg-color, #ffffff);
  color: var(--tg-theme-text-color, #172033);
  text-align: left;
  box-shadow: 0 12px 30px rgba(29, 42, 75, 0.06);
  cursor: pointer;
  transition: transform 150ms ease, border-color 150ms ease, box-shadow 150ms ease;
}

.card:hover,
.card:focus-visible {
  border-color: var(--tg-theme-button-color, #5269ff);
  box-shadow: 0 14px 34px rgba(29, 42, 75, 0.1);
  outline: none;
  transform: translateY(-2px);
}

.card-title {
  display: block;
  margin-bottom: 7px;
  font-size: 1.08rem;
  font-weight: 760;
  line-height: 1.3;
}

.card-description {
  display: block;
  color: var(--tg-theme-subtitle-text-color, #687086);
  font-size: 0.92rem;
  line-height: 1.48;
}

.card-meta {
  display: block;
  margin-top: 13px;
  color: var(--tg-theme-hint-color, #8d95a8);
  font-size: 0.78rem;
  font-weight: 650;
}

.card-arrow {
  position: absolute;
  top: 50%;
  right: 18px;
  color: var(--tg-theme-accent-text-color, #5269ff);
  font-size: 1.35rem;
  transform: translateY(-50%);
}

.lesson {
  width: min(100%, 720px);
  margin: 0 auto;
  padding: clamp(24px, 5vw, 44px);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 24px;
  background: #161a1f;
  box-shadow: 0 18px 42px rgba(0, 0, 0, 0.16);
}

.lesson p {
  max-width: 66ch;
  margin: 0 auto 24px;
  color: var(--text);
  font-size: clamp(1.02rem, 1.8vw, 1.16rem);
  font-weight: 400;
  line-height: 1.76;
  letter-spacing: -0.008em;
  text-align: left;
}

.lesson p:last-child {
  margin-bottom: 0;
}

.lesson-block {
  margin: 0 0 26px;
}

.lesson-text-content {
  white-space: pre-wrap;
  overflow-wrap: break-word;
}

.lesson-block:last-child {
  margin-bottom: 0;
}

.lesson-image {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  margin: 18px 0;
  border-radius: 16px;
  -webkit-touch-callout: none;
  -webkit-user-drag: none;
  -webkit-user-select: none;
  user-select: none;
}

.lesson-video-frame {
  position: relative;
  width: 100%;
  margin: 18px 0;
  overflow: hidden;
  border-radius: 16px;
  background: #111827;
  aspect-ratio: 16 / 9;
}

.lesson-video-frame iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
}

.lesson-video-link {
  width: 100%;
  margin: 18px 0;
}

.empty-state {
  padding: 20px;
  border-radius: 18px;
  background: var(--tg-theme-bg-color, #ffffff);
  color: var(--tg-theme-subtitle-text-color, #687086);
  line-height: 1.5;
}

.empty-state strong {
  display: block;
  margin-bottom: 8px;
  color: var(--tg-theme-text-color, #172033);
}

.empty-state p {
  margin: 0 0 14px;
}

.primary-button,
.secondary-button,
.danger-button,
.secondary-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  padding: 11px 15px;
  border: 0;
  border-radius: 13px;
  font-weight: 720;
  text-decoration: none;
  cursor: pointer;
}

.primary-button {
  background: var(--tg-theme-button-color, #5269ff);
  color: var(--tg-theme-button-text-color, #ffffff);
}

.secondary-button,
.secondary-link {
  border: 1px solid var(--tg-theme-section-separator-color, #dfe3ed);
  background: var(--tg-theme-bg-color, #ffffff);
  color: var(--tg-theme-text-color, #172033);
}

.danger-button {
  background: #fee2e2;
  color: #991b1b;
}

.lesson-navigation {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: space-between;
}

.admin-shell {
  width: min(100%, 980px);
}

.admin-header,
.panel-title-row,
.actions-row {
  display: flex;
  gap: 12px;
  align-items: center;
  justify-content: space-between;
}

.admin-header {
  margin-bottom: 22px;
}

.panel,
.admin-card,
.lesson-editor {
  padding: 20px;
  border: 1px solid var(--tg-theme-section-separator-color, #dfe3ed);
  border-radius: 20px;
  background: var(--tg-theme-bg-color, #ffffff);
  box-shadow: 0 12px 30px rgba(29, 42, 75, 0.06);
}

.panel h2,
.admin-card h3,
.lesson-editor h4 {
  margin: 0 0 16px;
}

.admin-grid {
  display: grid;
  gap: 14px;
}

.stack-form,
.course-editor,
.admin-card,
.lesson-editor {
  display: grid;
  gap: 13px;
}

.form-hint {
  margin: -4px 0 0;
  color: var(--tg-theme-hint-color, #687086);
  font-size: 0.9rem;
  line-height: 1.45;
}

.landing-image-preview {
  min-height: 72px;
  overflow: hidden;
  display: grid;
  place-items: center;
  border: 1px dashed var(--tg-theme-section-separator-color, #dfe3ed);
  border-radius: 14px;
  color: var(--tg-theme-hint-color, #687086);
  background: var(--tg-theme-secondary-bg-color, #f4f6fb);
}

.landing-image-preview img {
  display: block;
  width: 100%;
  max-height: 220px;
  object-fit: cover;
}

.upload-status {
  min-height: 1.4em;
  margin: -3px 0 0;
  color: #15803d;
  font-size: 0.9rem;
  line-height: 1.4;
}

.upload-status.error {
  color: #b91c1c;
}

.block-add-form,
.block-editor {
  display: grid;
  gap: 11px;
  padding: 14px;
  border: 1px solid var(--tg-theme-section-separator-color, #dfe3ed);
  border-radius: 16px;
  background: var(--tg-theme-secondary-bg-color, #f4f6fb);
}

.block-add-form {
  border-style: dashed;
}

.block-editor-header,
.mini-actions {
  display: flex;
  gap: 8px;
  align-items: center;
  justify-content: space-between;
}

.block-editor h5,
.lesson-editor h5 {
  margin: 0;
}

.icon-button {
  display: grid;
  width: 36px;
  height: 36px;
  place-items: center;
  border: 1px solid var(--tg-theme-section-separator-color, #dfe3ed);
  border-radius: 11px;
  background: var(--tg-theme-bg-color, #ffffff);
  color: var(--tg-theme-text-color, #172033);
  cursor: pointer;
}

.icon-button:disabled {
  cursor: not-allowed;
  opacity: 0.45;
}

.legacy-block {
  max-height: 180px;
  margin: 0;
  overflow: auto;
  white-space: pre-wrap;
  color: var(--tg-theme-subtitle-text-color, #687086);
  line-height: 1.55;
}

.wide-panel {
  grid-column: 1 / -1;
}

.status {
  min-height: 1.5em;
  margin: 0;
  color: #15803d;
}

.status.error {
  color: #b91c1c;
}

.muted {
  margin: 0;
  color: var(--tg-theme-subtitle-text-color, #687086);
}

code {
  padding: 2px 5px;
  border-radius: 6px;
  background: rgba(82, 105, 255, 0.1);
}

body:not(.mini-app) {
  background:
    radial-gradient(circle at 50% -20%, rgba(255, 255, 255, 0.05), transparent 260px),
    #0b0d0f;
  color: #f4f4f5;
}

body:not(.mini-app) .admin-shell {
  width: min(100%, 1040px);
}

body:not(.mini-app) .panel,
body:not(.mini-app) .admin-card,
body:not(.mini-app) .lesson-editor {
  border-color: rgba(255, 255, 255, 0.08);
  border-radius: 22px;
  background: rgba(255, 255, 255, 0.035);
  box-shadow: 0 18px 60px rgba(0, 0, 0, 0.28);
}

body:not(.mini-app) input,
body:not(.mini-app) select,
body:not(.mini-app) textarea {
  border-color: rgba(255, 255, 255, 0.1);
  border-radius: 16px;
  background: #101318;
  color: #f4f4f5;
}

body:not(.mini-app) input::placeholder,
body:not(.mini-app) textarea::placeholder {
  color: #6b7280;
}

body:not(.mini-app) .primary-button {
  background: #f4f4f5;
  color: #0b0d0f;
}

body:not(.mini-app) .secondary-button,
body:not(.mini-app) .secondary-link,
body:not(.mini-app) .icon-button {
  border-color: rgba(255, 255, 255, 0.1);
  background: #161a1f;
  color: #f4f4f5;
}

body:not(.mini-app) .danger-button {
  background: rgba(248, 113, 113, 0.16);
  color: #fecaca;
}

body:not(.mini-app) .block-add-form,
body:not(.mini-app) .block-editor {
  border-color: rgba(255, 255, 255, 0.08);
  background: rgba(255, 255, 255, 0.035);
}

body:not(.mini-app) .page-subtitle,
body:not(.mini-app) .muted,
body:not(.mini-app) .legacy-block {
  color: #9ca3af;
}

body:not(.mini-app) .eyebrow {
  color: #6b7280;
}

body:not(.mini-app) code {
  background: rgba(255, 255, 255, 0.08);
  color: #f4f4f5;
}

body:not(.mini-app) .status {
  color: #a7f3d0;
}

body:not(.mini-app) .status.error {
  color: #fca5a5;
}

@media (min-width: 620px) {
  .app-shell {
    padding-right: 28px;
    padding-left: 28px;
  }

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

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

@media (max-width: 619px) {
  .admin-header,
  .panel-title-row,
  .actions-row,
  .lesson-navigation {
    align-items: stretch;
    flex-direction: column;
  }
}

@media (prefers-reduced-motion: reduce) {
  .card {
    transition: none;
  }
}

body.mini-app {
  --bg: #0b0d0f;
  --bg-soft: #111418;
  --surface: #161a1f;
  --surface-2: #1d2229;
  --border: rgba(255, 255, 255, 0.08);
  --border-soft: rgba(255, 255, 255, 0.06);
  --text: #f4f4f5;
  --muted: #9ca3af;
  --muted-2: #6b7280;
  --accent: #ffffff;
  --accent-soft: rgba(255, 255, 255, 0.08);
  --shadow: rgba(0, 0, 0, 0.28);
  min-width: 280px;
  min-height: 100vh;
  min-height: 100dvh;
  width: 100%;
  overflow-x: hidden;
  background:
    radial-gradient(circle at 50% -20%, rgba(154, 166, 142, 0.16), transparent 220px),
    linear-gradient(180deg, rgba(255, 255, 255, 0.03), transparent 260px),
    var(--bg);
  color: var(--text);
}

body.mini-app .app-shell {
  width: min(100%, 860px);
  min-height: 100vh;
  min-height: 100dvh;
  padding: calc(28px + env(safe-area-inset-top)) clamp(18px, 4vw, 34px) calc(34px + env(safe-area-inset-bottom));
}

body.mini-app .topbar {
  align-items: flex-start;
  gap: 14px;
  padding: 6px 0 2px;
}

body.mini-app .back-button {
  width: 42px;
  height: 42px;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: var(--surface);
  color: var(--text);
  transition: transform 160ms ease, background-color 160ms ease, border-color 160ms ease;
}

body.mini-app .back-button:hover,
body.mini-app .back-button:focus-visible {
  border-color: rgba(255, 255, 255, 0.16);
  background: var(--surface-2);
  outline: none;
}

body.mini-app .back-button:active {
  transform: translateY(1px) scale(0.98);
}

body.mini-app .eyebrow {
  margin-bottom: 8px;
  color: var(--muted);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.12em;
}

body.mini-app h1 {
  color: var(--text);
  font-size: clamp(2rem, 9vw, 3.15rem);
  line-height: 1.03;
  letter-spacing: -0.035em;
}

body.mini-app .page-subtitle {
  max-width: 560px;
  margin: 15px 0 30px;
  color: var(--muted);
  font-size: 1rem;
  line-height: 1.55;
}

body.mini-app .content {
  gap: 14px;
}

body.mini-app .course-steps {
  gap: 0;
  padding: 4px 0 28px;
  border-radius: 30px;
  background: #252932;
}

body.mini-app .course-menu-intro {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 24px;
  align-items: start;
  padding: 26px 26px 38px;
}

body.mini-app .course-menu-close {
  width: 34px;
  height: 34px;
  padding: 0;
  border: 0;
  border-radius: 12px;
  background: transparent;
  color: var(--text);
  font-size: 2rem;
  line-height: 1;
  cursor: pointer;
}

body.mini-app .course-menu-title {
  display: grid;
  gap: 30px;
  min-width: 0;
}

body.mini-app .course-menu-title::before {
  content: "Меню курса";
  color: var(--text);
  font-size: clamp(1.45rem, 6vw, 2rem);
  font-weight: 560;
  letter-spacing: -0.035em;
}

body.mini-app .course-menu-title span {
  color: var(--muted);
  font-size: 1rem;
  font-weight: 650;
}

body.mini-app .course-menu-title strong {
  margin-top: -22px;
  color: var(--text);
  font-size: clamp(1.5rem, 6vw, 2.25rem);
  font-weight: 780;
  letter-spacing: -0.04em;
}

body.mini-app .course-step {
  border: 0;
  border-radius: 0;
  background: transparent;
  box-shadow: none;
}

body.mini-app .course-step-toggle {
  min-height: 112px;
  padding: 20px 26px;
  color: var(--text);
  transition: background-color 160ms ease;
}

body.mini-app .course-step-toggle:hover,
body.mini-app .course-step-toggle:focus-visible {
  background: rgba(255, 255, 255, 0.025);
  outline: none;
}

body.mini-app .course-step-toggle:active {
  background: rgba(255, 255, 255, 0.045);
}

body.mini-app .course-step-label {
  color: var(--muted-2);
  font-size: clamp(1rem, 4vw, 1.18rem);
  font-weight: 650;
  letter-spacing: -0.02em;
  text-transform: none;
}

body.mini-app .course-step-title {
  color: var(--text);
  font-size: clamp(1.32rem, 5.8vw, 2rem);
  font-weight: 780;
  line-height: 1.16;
  letter-spacing: -0.035em;
}

body.mini-app .course-step-arrow {
  width: 42px;
  height: 42px;
  border: 0;
  border-radius: 16px;
  background: transparent;
  color: var(--text);
  font-size: 1.25rem;
  transition: background-color 160ms ease, border-color 160ms ease, transform 160ms ease;
}

body.mini-app .course-step-toggle:hover .course-step-arrow,
body.mini-app .course-step-toggle:focus-visible .course-step-arrow {
  border-color: rgba(255, 255, 255, 0.18);
  background: var(--accent-soft);
}

body.mini-app .step-lessons {
  gap: 0;
  padding: 0 26px 18px;
}

body.mini-app .step-lessons:not([hidden]) {
  border-top: 0;
  padding-top: 0;
}

body.mini-app .step-lesson {
  grid-template-columns: minmax(0, 1fr);
  min-height: 58px;
  padding: 10px 0;
  border: 0;
  border-radius: 0;
  background: transparent;
  color: var(--text);
  transition: transform 160ms ease, color 160ms ease;
}

body.mini-app .step-lesson:hover,
body.mini-app .step-lesson:focus-visible {
  color: #ffffff;
  background: transparent;
  outline: none;
  transform: translateX(4px);
}

body.mini-app .step-lesson:active {
  transform: translateY(0);
}

body.mini-app .step-lesson-number {
  display: none;
}

body.mini-app .step-lesson-title {
  color: var(--text);
  font-size: clamp(1.08rem, 4.5vw, 1.42rem);
  font-weight: 540;
  letter-spacing: -0.025em;
}

body.mini-app .step-empty,
body.mini-app .muted {
  color: var(--muted);
}

body.mini-app .lesson {
  width: min(100%, 720px);
  padding: clamp(26px, 6vw, 52px) clamp(20px, 5vw, 46px);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 24px;
  background: #1b1f25;
  box-shadow: 0 18px 52px rgba(0, 0, 0, 0.22);
}

body.mini-app .lesson p {
  color: var(--text);
  max-width: 64ch;
  margin-right: auto;
  margin-left: auto;
  font-size: clamp(1.03rem, 2vw, 1.18rem);
  line-height: 1.78;
  letter-spacing: -0.01em;
  text-align: left;
}

body.mini-app .lesson-block {
  margin-bottom: 28px;
}

body.mini-app .lesson-image {
  width: 100%;
  max-width: 100%;
  height: auto;
  margin: 22px 0;
  border: 1px solid var(--border);
  border-radius: 18px;
}

body.mini-app .lesson-video-frame {
  margin: 22px 0;
  border: 1px solid var(--border);
  border-radius: 18px;
  background: #050607;
}

body.mini-app .lesson-video-link {
  margin: 22px 0;
}

body.mini-app .lesson-navigation {
  gap: 10px;
  margin-top: 4px;
}

body.mini-app .primary-button,
body.mini-app .secondary-button {
  min-height: 46px;
  border-radius: 16px;
  font-weight: 760;
  transition: transform 160ms ease, background-color 160ms ease, border-color 160ms ease;
}

body.mini-app .primary-button {
  background: var(--text);
  color: var(--bg);
}

body.mini-app .secondary-button {
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
}

body.mini-app .primary-button:hover,
body.mini-app .secondary-button:hover,
body.mini-app .primary-button:focus-visible,
body.mini-app .secondary-button:focus-visible {
  outline: none;
  transform: translateY(-1px);
}

body.mini-app .primary-button:active,
body.mini-app .secondary-button:active {
  transform: translateY(0);
}

body.mini-app .empty-state {
  border: 1px solid var(--border);
  border-radius: 20px;
  background: var(--surface);
  color: var(--muted);
}

body.mini-app .empty-state strong {
  color: var(--text);
}

body.mini-app .empty-state p {
  color: var(--muted);
}

body.mini-app .landing-screen {
  display: block;
}

body.mini-app .landing-shell {
  width: min(100%, 640px);
  margin: clamp(12px, 8vh, 72px) auto 0;
}

body.mini-app .landing-product-card {
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 24px;
  background: #161a1f;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.2);
}

body.mini-app .landing-product-image {
  width: 100%;
  aspect-ratio: 16 / 9;
  max-height: 300px;
  overflow: hidden;
  background: #090b0e;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

body.mini-app .landing-product-image img {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
  object-position: center;
}

body.mini-app .landing-product-body {
  display: grid;
  gap: 20px;
  padding: clamp(30px, 8vw, 56px);
}

body.mini-app .landing-product-body h3 {
  margin: 0;
  color: var(--text);
  font-size: clamp(2rem, 9vw, 3.2rem);
  font-weight: 680;
  line-height: 1.04;
  letter-spacing: -0.05em;
}

body.mini-app .landing-product-body p {
  margin: 0;
  color: var(--muted);
  font-size: clamp(1rem, 3.8vw, 1.15rem);
  line-height: 1.58;
}

body.mini-app .landing-product-progress {
  padding-top: 4px;
  color: var(--muted) !important;
  font-size: 0.95rem !important;
  font-weight: 560;
}

body.mini-app .landing-product-meta {
  display: grid;
  gap: 0;
  align-items: stretch;
  padding-top: 8px;
}

body.mini-app .landing-continue-button {
  width: 100%;
  min-height: 60px;
  padding: 0 22px;
  border: 0;
  border-radius: 18px;
  background: var(--text);
  color: var(--bg);
  font-weight: 760;
  letter-spacing: -0.015em;
  cursor: pointer;
  transition: transform 180ms ease, background-color 180ms ease;
}

body.mini-app .landing-continue-button:hover {
  background: #e5e5e7;
  transform: translateY(-1px);
}

body.mini-app .landing-continue-button:focus-visible {
  outline: 2px solid rgba(255, 255, 255, 0.22);
  outline-offset: 2px;
}

body.mini-app .landing-continue-button:active {
  transform: scale(0.985);
}

body.mini-app .course-steps {
  gap: 0;
  padding: 0;
  border-radius: 0;
  background: transparent;
}

body.mini-app .course-step-toggle {
  min-height: 88px;
  padding: 18px 2px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

body.mini-app .course-menu-intro {
  grid-template-columns: 40px minmax(0, 1fr);
  gap: 12px;
  align-items: center;
  padding: 18px 2px 30px;
}

body.mini-app .course-menu-title {
  gap: 0;
}

body.mini-app .course-menu-title::before {
  display: none;
}

body.mini-app .course-menu-title strong {
  margin: 0;
  font-size: clamp(1.7rem, 7vw, 2.5rem);
  font-weight: 650;
}

body.mini-app .course-menu-close {
  width: 40px;
  height: 40px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 14px;
  color: var(--muted);
  font-size: 1.6rem;
}

body.mini-app .course-step-label {
  font-size: 0.82rem;
  font-weight: 560;
  letter-spacing: 0;
}

body.mini-app .course-step-title {
  font-size: clamp(1.2rem, 5.2vw, 1.7rem);
  font-weight: 620;
}

body.mini-app .course-step-arrow {
  width: 40px;
  height: 40px;
  color: var(--muted);
}

body.mini-app .step-lessons {
  padding: 4px 2px 18px;
}

body.mini-app .step-lesson {
  min-height: 52px;
  padding: 10px 0 10px 14px;
  color: var(--muted);
}

body.mini-app .step-lesson-title {
  color: inherit;
  font-size: 1rem;
  font-weight: 500;
}

@media (min-width: 620px) {
  body.mini-app .app-shell {
    padding-right: clamp(26px, 4vw, 42px);
    padding-left: clamp(26px, 4vw, 42px);
  }

  body.mini-app .lesson {
    padding: 28px;
  }

  body.mini-app .landing-product-body {
    padding: 48px;
  }
}

@media (min-width: 960px) {
  body.mini-app .app-shell {
    padding-top: calc(42px + env(safe-area-inset-top));
    padding-bottom: calc(54px + env(safe-area-inset-bottom));
  }
}

@media (max-width: 619px) {
  body.mini-app .lesson-navigation {
    align-items: stretch;
    flex-direction: column;
  }
}

@media (prefers-reduced-motion: reduce) {
  body.mini-app .course-step-toggle,
  body.mini-app .course-step-arrow,
  body.mini-app .step-lesson,
  body.mini-app .primary-button,
  body.mini-app .secondary-button,
  body.mini-app .back-button {
    transition: none;
  }
}

/* Library: a steady accordion, generous tap targets, quiet lesson rows. */
body.mini-app .course-steps { width:min(100%,760px); margin-inline:auto; gap:12px; padding:10px 0 calc(96px + env(safe-area-inset-bottom)); }
body.mini-app .course-menu-intro { display:grid; grid-template-columns:44px 1fr; gap:16px; padding:12px 0 0; align-items:center; }
body.mini-app .course-menu-close { width:44px; height:44px; border:1px solid #34373d; border-radius:50%; background:#141619; font-size:25px; color:#e3e5ea; }
body.mini-app .course-menu-title { display:grid; gap:7px; }
body.mini-app .course-menu-title::before { display:none; }
body.mini-app .course-menu-title span { font:10px/1.4 ui-monospace,monospace; letter-spacing:.1em; color:#a9afb9; }
body.mini-app .course-menu-title strong { font:600 clamp(30px,7vw,42px)/1.05 Arial,sans-serif; letter-spacing:-.05em; color:#f3f4f6; }
body.mini-app .course-menu-note { margin:8px 0 18px; color:#a9afb9; font-size:13px; line-height:1.65; max-width:35ch; }
body.mini-app .course-step { border:1px solid #292d34; border-radius:18px; overflow:hidden; background:#111316; transition:border-color .18s ease; }
body.mini-app .course-step.is-expanded { border-color:#535a65; background:#14171b; }
body.mini-app .course-step-toggle,body.mini-app .course-step:not(.is-expanded) .course-step-toggle { display:grid; grid-template-columns:32px minmax(0,1fr) 28px; align-items:center; gap:14px; width:100%; min-height:108px; margin:0; padding:22px 20px; border:0; border-radius:0; background:transparent; text-align:left; touch-action:manipulation; -webkit-tap-highlight-color:transparent; }
body.mini-app .course-step-toggle:hover { background:#1a1e24; }
body.mini-app .course-step-toggle:active { background:#242930; transform:none; }
body.mini-app .course-step-title-group { display:grid; min-width:0; gap:8px; }
body.mini-app .course-step-label { display:block; margin:0; font:11px/1.4 ui-monospace,monospace; color:#9da5b1; letter-spacing:0; }
body.mini-app .course-step-title { display:block; color:#eff1f4; font:550 clamp(17px,4.8vw,23px)/1.3 Arial,sans-serif; letter-spacing:-.025em; overflow-wrap:anywhere; }
body.mini-app .course-step-ordinal { align-self:start; padding-top:2px; color:#737d8d; font:12px/1.4 ui-monospace,monospace; }
body.mini-app .course-step.is-expanded .course-step-ordinal { color:#eceff4; }
body.mini-app .course-step-arrow,body.mini-app .course-step.is-expanded .course-step-arrow { position:static; display:grid; place-items:center; width:28px; height:28px; margin:0; border:1px solid #3b424d; border-radius:50%; background:transparent; color:#d9dfe8; font:20px/1 Arial,sans-serif; transform:none; transition:none; }
body.mini-app .course-step-arrow::before { display:none; content:none; }
body.mini-app .step-lessons { display:grid; gap:0; padding:0 18px 12px; }
body.mini-app .step-lessons[hidden] { display:none; }
body.mini-app .step-lessons:not([hidden]) { border-top:1px solid #2e343d; }
body.mini-app .step-lesson { display:grid; grid-template-columns:28px minmax(0,1fr) 20px; align-items:center; gap:12px; width:100%; min-height:64px; padding:17px 4px; margin:0; border:0; border-bottom:1px solid #292f37; border-radius:0; background:transparent; text-align:left; touch-action:manipulation; -webkit-tap-highlight-color:transparent; }
body.mini-app .step-lesson:last-child { border-bottom:0; }
body.mini-app .step-lesson:hover,body.mini-app .step-lesson:active { background:#222831; transform:none; }
body.mini-app .step-lesson-number { display:block; width:auto; height:auto; border-radius:0; background:none; color:#838e9f; font:11px/1.4 ui-monospace,monospace; }
body.mini-app .step-lesson-title { color:#dce1e9; font:400 15px/1.5 Arial,sans-serif; letter-spacing:0; }
body.mini-app .step-lesson-indicator { color:#79879b; font-size:16px; text-align:right; }
body.mini-app .step-lesson.is-last-read { background:#20262e; }
body.mini-app .step-lesson.is-last-read .step-lesson-number { color:#f0f3f8; }
body.mini-app .course-step-toggle:focus-visible,body.mini-app .step-lesson:focus-visible,body.mini-app .course-resume:focus-visible,body.mini-app .course-menu-close:focus-visible,body.mini-app .step-retry:focus-visible { outline:2px solid #cbd7ea; outline-offset:-3px; }
body.mini-app .step-empty { margin:0; padding:24px 4px; color:#b2bac7; font-size:14px; line-height:1.6; }
body.mini-app .step-retry { min-height:48px; padding:12px; margin:0 0 12px; border:1px solid #515d70; border-radius:10px; background:#242d39; color:#f1f4f9; font-size:14px; }
body.mini-app .course-resume { position:relative; display:grid; gap:12px; padding:24px 50px 24px 24px; margin:0 0 14px; border:1px solid #566173; border-radius:18px; background:linear-gradient(125deg,#293341,#14191f); text-align:left; color:#f0f4f9; touch-action:manipulation; }
body.mini-app .course-resume > span:first-child { font:10px ui-monospace,monospace; letter-spacing:.1em; color:#b8c5d7; }
body.mini-app .course-resume strong { font:500 18px/1.4 Arial,sans-serif; }
body.mini-app .course-resume-arrow { position:absolute; right:22px; top:50%; transform:translateY(-50%); font-size:23px; }
@media(max-width:350px) { body.mini-app .course-step-toggle,body.mini-app .course-step:not(.is-expanded) .course-step-toggle { grid-template-columns:22px minmax(0,1fr) 24px; padding:20px 14px; gap:10px; } body.mini-app .step-lessons { padding-inline:14px; } }
@media(prefers-reduced-motion:reduce) { body.mini-app .course-step { transition:none; } }