:root {
  color-scheme: dark;
  --bg: #0b0d12;
  --panel: #141720;
  --panel-soft: #1a1e28;
  --panel-strong: #232938;
  --control: #1b1f2a;
  --control-hover: #242a38;
  --code: #090b10;
  --code-soft: #12151d;
  --ink: #f4f1e8;
  --muted: #b6b4ad;
  --faint: #858b96;
  --line: rgba(210, 220, 235, 0.11);
  --line-strong: rgba(218, 226, 240, 0.22);
  --amber: #c7a76a;
  --amber-strong: #dec27d;
  --blue: #8ea4c7;
  --blue-strong: #b4c7e8;
  --green: #8bc7a1;
  --red: #d78a7d;
  --warm-control: #25231f;
  --warm-control-hover: #302c24;
  --radius: 8px;
  --mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;
  --sans: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  min-height: 100%;
  scroll-behavior: smooth;
}

body {
  min-height: 100vh;
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 15px;
}

button,
input,
textarea {
  font: inherit;
}

button {
  cursor: pointer;
}

button:focus-visible,
input:focus-visible,
textarea:focus-visible {
  outline: 2px solid rgba(199, 167, 106, 0.62);
  outline-offset: 2px;
}

.app-shell {
  min-height: 100vh;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 40;
  display: flex;
  min-height: 3.4rem;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  border-bottom: 1px solid var(--line);
  background: rgba(11, 13, 18, 0.96);
  padding: 0.45rem clamp(0.8rem, 2vw, 1.25rem);
  backdrop-filter: blur(16px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  color: inherit;
  text-decoration: none;
}

.brand-mark,
.avatar,
.road-node-icon,
.module-icon {
  display: grid;
  place-items: center;
  border-radius: var(--radius);
  font-weight: 950;
  letter-spacing: 0;
}

.brand-mark,
.avatar {
  background: linear-gradient(135deg, var(--amber), var(--blue-strong));
  color: #12141a;
  overflow: hidden;
}

.brand-mark {
  width: 2.25rem;
  height: 2.25rem;
}

.brand-mark img,
.avatar img {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
}

.brand strong,
.brand small,
.module-copy strong,
.module-copy small,
.profile-mini strong,
.profile-mini small,
.road-node strong,
.road-node small {
  display: block;
}

.brand strong {
  line-height: 1.05;
}

.brand small,
.module-copy small,
.profile-mini small,
.module-count,
.prompt,
.roadmap-hero p,
.side-card p,
.road-node small,
.boss-card small,
.library-card p,
.profile-head p,
.leaderboard-row small,
.queue-row small,
.tests-text {
  color: var(--muted);
}

.top-actions,
.lesson-controls,
.track-filter {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  flex-wrap: wrap;
}

.top-actions {
  position: relative;
  flex: 0 0 auto;
}

.primary-button,
.ghost-button,
.filter-chip,
.mobile-tab,
.nav-button {
  min-height: 2.28rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--control);
  color: var(--ink);
  padding: 0.48rem 0.72rem;
  font-weight: 800;
  transition: border-color 150ms ease, background 150ms ease, color 150ms ease;
}

.account-menu-button,
.compact-button {
  min-height: 2.15rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--control);
  color: var(--ink);
  padding: 0.42rem 0.65rem;
  font-size: 0.86rem;
  font-weight: 850;
  white-space: nowrap;
}

.account-menu-button {
  max-width: min(18rem, 34vw);
  overflow: hidden;
  text-overflow: ellipsis;
}

.account-menu-button:hover,
.compact-button:hover {
  border-color: var(--line-strong);
  background: var(--control-hover);
}

.account-menu {
  position: absolute;
  top: calc(100% + 0.45rem);
  right: 0;
  z-index: 70;
  display: grid;
  min-width: 13.5rem;
  gap: 0.15rem;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  background: rgba(20, 23, 32, 0.98);
  padding: 0.45rem;
  box-shadow: 0 1.2rem 3rem rgba(0, 0, 0, 0.34);
}

.account-menu[hidden] {
  display: none;
}

.account-menu button {
  width: 100%;
  min-height: 2.05rem;
  border: 0;
  border-radius: 6px;
  background: transparent;
  color: var(--ink);
  padding: 0.45rem 0.55rem;
  text-align: left;
  font-size: 0.9rem;
  font-weight: 800;
}

.account-menu button:hover {
  background: var(--control-hover);
}

.account-menu hr {
  width: 100%;
  border: 0;
  border-top: 1px solid var(--line);
  margin: 0.25rem 0;
}

.primary-button,
.nav-button.is-active,
.filter-chip.is-active,
.mobile-tab.is-active {
  border-color: rgba(199, 167, 106, 0.48);
  background: var(--panel-strong);
  color: var(--ink);
}

.primary-button {
  background: var(--amber);
  color: #111318;
}

.primary-button:disabled,
.ghost-button:disabled {
  cursor: not-allowed;
  opacity: 0.45;
}

.next-button {
  border-color: rgba(142, 164, 199, 0.44);
  background: var(--blue);
  color: #10141d;
}

.ghost-button:hover,
.filter-chip:hover,
.mobile-tab:hover,
.nav-button:hover {
  border-color: var(--line-strong);
  background: var(--control-hover);
}

.primary-button:hover {
  background: var(--amber-strong);
  color: #101216;
}

.next-button:hover {
  background: var(--blue-strong);
  color: #10141d;
}

.workspace {
  width: min(100%, 1220px);
  display: grid;
  grid-template-columns: minmax(16rem, 18.5rem) minmax(0, 1fr);
  gap: 1.25rem;
  margin: 0 auto;
  padding: 1rem clamp(1rem, 2vw, 1.5rem) 2rem;
}

body[data-screen="lesson"] .workspace {
  width: min(100%, 104rem);
  grid-template-columns: minmax(0, 1fr);
}

body[data-screen="lesson"] .skill-rail,
body[data-screen="topics"] .skill-rail {
  display: none;
}

body[data-screen="lesson"] .screen-stack,
body[data-screen="topics"] .screen-stack {
  grid-column: 1;
}

body[data-screen="topics"] .workspace {
  width: min(100%, 92rem);
  grid-template-columns: minmax(0, 1fr);
}

.skill-rail,
.lesson-card,
.side-card,
.mission-strip,
.review-panel,
.auth-panel,
.guide-panel {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
}

.skill-rail {
  position: sticky;
  top: 5.25rem;
  align-self: start;
  max-height: calc(100vh - 6.25rem);
  overflow: auto;
  padding: 1rem;
  scrollbar-width: thin;
}

.progress-sidebar {
  display: none;
}

.profile-mini,
.profile-head,
.rail-header,
.lesson-meta,
.mission-strip,
.side-card > .row {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
}

.lesson-meta > div,
.module-copy {
  min-width: 0;
}

.profile-mini {
  align-items: center;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel-soft);
  padding: 0.85rem;
  margin-bottom: 1rem;
}

.avatar {
  width: 2.65rem;
  height: 2.65rem;
  flex: 0 0 auto;
}

.avatar.big {
  width: 4.5rem;
  height: 4.5rem;
  font-size: 1.7rem;
}

.side-nav {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.5rem;
  margin-bottom: 1rem;
}

.nav-button {
  width: 100%;
  padding-inline: 0.6rem;
}

.eyebrow {
  display: inline-block;
  color: var(--amber-strong);
  font-size: 0.76rem;
  font-weight: 950;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.rail-header {
  align-items: center;
  margin-top: 0.2rem;
  flex-wrap: wrap;
}

.rail-header strong {
  color: var(--ink);
  font-size: 1rem;
  line-height: 1.1;
  white-space: nowrap;
}

.track-filter {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin: 0.9rem 0 1rem;
}

.filter-chip {
  min-height: 2.45rem;
  padding: 0.45rem 0.65rem;
  font-size: 0.84rem;
}

.module-list {
  display: grid;
  gap: 0.7rem;
}

.module-list-main {
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 20rem), 1fr));
}

.module-button {
  width: 100%;
  display: grid;
  grid-template-columns: 2.7rem minmax(0, 1fr) auto;
  align-items: center;
  gap: 0.8rem;
  min-height: 4.35rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel-soft);
  color: var(--ink);
  padding: 0.75rem;
  text-align: left;
}

.module-list-main .module-button {
  min-height: 5.1rem;
}

.module-button.is-active {
  border-color: rgba(199, 167, 106, 0.5);
  background: var(--panel-strong);
}

.module-icon {
  width: 2.45rem;
  height: 2.45rem;
  background: color-mix(in srgb, var(--module-color, var(--amber)) 48%, #171b25);
  color: white;
}

.module-copy strong {
  font-size: 0.95rem;
  line-height: 1.15;
  overflow-wrap: anywhere;
}

.module-copy small,
.module-count {
  margin-top: 0.16rem;
  font-size: 0.78rem;
}

.module-count {
  font-weight: 900;
}

.screen-stack,
.lesson-stage {
  min-width: 0;
}

.app-screen {
  display: none;
  gap: 1rem;
}

.app-screen.is-active {
  display: grid;
}

.mission-strip,
.lesson-card,
.review-panel,
.side-card {
  padding: clamp(0.95rem, 1.7vw, 1.35rem);
}

.mission-strip {
  align-items: center;
}

.mission-strip h1,
.lesson-card h2,
.side-card h3,
.review-panel h3,
.profile-head h2 {
  margin: 0.2rem 0 0;
  line-height: 1.08;
  letter-spacing: 0;
  overflow-wrap: anywhere;
}

.mission-strip h1 {
  max-width: 28ch;
  font-size: clamp(1.35rem, 1.8vw, 1.9rem);
}

.lesson-card h2,
.profile-head h2 {
  font-size: clamp(1.3rem, 1.65vw, 1.85rem);
}

.side-card h3,
.review-panel h3 {
  font-size: 1.1rem;
}

.roadmap-hero p,
.prompt,
.side-card p,
.profile-head p {
  max-width: 58rem;
  font-size: 0.94rem;
  line-height: 1.55;
}

.task-brief {
  display: grid;
  gap: 0.45rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(244, 241, 232, 0.035);
  padding: 0.75rem;
}

.task-brief[hidden] {
  display: none;
}

.brief-row {
  display: grid;
  grid-template-columns: minmax(6.5rem, 0.18fr) minmax(0, 1fr);
  gap: 0.75rem;
  align-items: start;
}

.brief-row span {
  color: var(--amber-strong);
  font-size: 0.72rem;
  font-weight: 900;
  letter-spacing: 0.04em;
  line-height: 1.15;
  text-transform: uppercase;
}

.brief-row p {
  margin: 0;
  color: var(--muted);
  line-height: 1.45;
  overflow-wrap: anywhere;
}

.brief-row code {
  color: var(--ink);
  font-family: var(--mono);
  font-size: 0.88em;
}

.stat-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.65rem;
  min-width: min(100%, 24rem);
}

.stat-pill,
.profile-stat,
.library-card,
.quest-row,
.boss-card,
.option-card,
.queue-row,
.leaderboard-row {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel-soft);
}

.stat-pill {
  padding: 0.75rem;
}

.stat-pill span,
.stat-pill strong,
.profile-stat span,
.profile-stat strong {
  display: block;
}

.stat-pill span,
.profile-stat span {
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 850;
}

.stat-pill strong,
.profile-stat strong {
  margin-top: 0.15rem;
  font-size: 1.35rem;
}

.lesson-type {
  flex: 0 0 auto;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--panel-soft);
  color: var(--amber-strong);
  padding: 0.34rem 0.58rem;
  font-size: 0.74rem;
  font-weight: 900;
  white-space: nowrap;
}

.lesson-header-actions {
  display: inline-flex;
  flex: 0 0 auto;
  align-items: center;
  gap: 0.45rem;
}

.roadmap-path {
  display: grid;
  gap: 0.75rem;
  max-width: 820px;
  margin-top: 1rem;
}

.road-node {
  display: grid;
  grid-template-columns: 3.35rem minmax(0, 1fr);
  align-items: center;
  gap: 0.9rem;
  width: 100%;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel-soft);
  color: var(--ink);
  padding: 1rem;
  text-align: left;
}

.road-node.is-current {
  border-color: rgba(199, 167, 106, 0.58);
  background: var(--panel-strong);
  box-shadow: inset 3px 0 0 var(--amber);
}

.road-node.is-done {
  background: #202635;
}

.road-node.is-locked {
  opacity: 0.48;
  cursor: not-allowed;
}

.road-node-icon {
  width: 2.95rem;
  height: 2.95rem;
  border-radius: 999px;
  background: color-mix(in srgb, var(--node-color, var(--blue)) 46%, #171b25);
  color: white;
}

.road-node strong {
  font-size: 1.04rem;
}

.road-node small {
  margin-top: 0.2rem;
  font-size: 0.86rem;
  line-height: 1.45;
}

.challenge {
  display: grid;
  gap: 1rem;
  min-height: 17rem;
}

.code-panel,
.answer-dropzone,
.bug-lines,
.write-panel {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--code);
  color: var(--ink);
}

.code-panel,
.answer-dropzone {
  overflow-x: auto;
  padding: 1rem;
  font-family: var(--mono);
  font-size: 0.95rem;
  line-height: 1.7;
}

.answer-dropzone {
  min-height: 7rem;
}

.answer-label {
  margin-bottom: 0.55rem;
  color: var(--muted);
  font-family: var(--sans);
  font-size: 0.74rem;
  font-weight: 900;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.selected-blocks {
  display: grid;
  gap: 0.4rem;
}

.selected-blocks:empty::before {
  content: "Собирай код здесь";
  color: var(--faint);
  font-family: var(--sans);
  font-weight: 800;
}

.block-bank {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 18rem), 1fr));
  gap: 0.6rem;
}

.code-block,
.bug-line {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--warm-control);
  color: var(--ink);
  padding: 0.78rem 0.9rem;
  font-family: var(--mono);
  font-size: 0.92rem;
  line-height: 1.35;
  text-align: left;
  white-space: pre-wrap;
}

.code-block:hover,
.option-card:hover,
.bug-line:hover {
  border-color: var(--line-strong);
  background: var(--warm-control-hover);
}

.code-block:disabled {
  opacity: 0.42;
  cursor: not-allowed;
}

.selected-line {
  min-height: 2.5rem;
  border-style: dashed;
  background: transparent;
}

.options-grid {
  display: grid;
  gap: 0.65rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--code);
  padding: 0.75rem;
}

.option-card {
  width: 100%;
  color: var(--ink);
  padding: 0.95rem 1rem;
  text-align: left;
  font-weight: 850;
}

.option-card.is-selected,
.bug-line.is-selected {
  border-color: rgba(199, 167, 106, 0.54);
  background: var(--panel-strong);
}

.fill-row {
  display: grid;
  grid-template-columns: minmax(0, 12rem) minmax(0, 1fr);
  gap: 0.8rem;
  align-items: center;
  margin-top: 0.75rem;
}

.fill-row label {
  color: var(--muted);
  font-size: 0.86rem;
  font-weight: 850;
}

.fill-row input,
.code-textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--code-soft);
  color: var(--ink);
}

.fill-row input {
  padding: 0.78rem;
}

.bug-lines {
  display: grid;
  gap: 0.45rem;
  padding: 0.75rem;
}

.write-panel {
  display: grid;
  gap: 0.55rem;
  padding: 1rem;
}

.idea-panel {
  display: grid;
  gap: 0.75rem;
  padding: 1rem;
}

.idea-context {
  margin: 0;
  white-space: pre-wrap;
}

.code-textarea {
  min-height: 13rem;
  resize: vertical;
  padding: 0.85rem;
  font-family: var(--mono);
  font-size: 0.86rem;
  line-height: 1.55;
  tab-size: 4;
  white-space: pre;
}

.idea-textarea {
  min-height: 18rem;
  font-family: var(--font);
  white-space: pre-wrap;
}

.idea-rubric {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
}

.idea-rubric span {
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--control);
  color: var(--muted);
  padding: 0.4rem 0.6rem;
  font-size: 0.78rem;
  font-weight: 800;
}

.tests-text {
  margin: 0;
  font-family: var(--mono);
  font-size: 0.8rem;
  line-height: 1.5;
}

.term-strip {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(13rem, 1fr));
  gap: 0.55rem;
  margin: -0.25rem 0 0.85rem;
}

.term-strip[hidden] {
  display: none;
}

.term-chip {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--control);
  padding: 0.75rem;
}

.term-chip strong,
.term-chip span {
  display: block;
}

.term-chip span {
  margin-top: 0.25rem;
  color: var(--muted);
  font-size: 0.82rem;
  line-height: 1.45;
}

.lesson-controls {
  justify-content: flex-end;
  margin-top: 1rem;
}

.feedback {
  margin-top: 1rem;
  border-radius: var(--radius);
  padding: 0.9rem 1rem;
  font-weight: 800;
  line-height: 1.45;
}

.feedback p {
  margin: 0.45rem 0 0;
  color: inherit;
  font-weight: 650;
}

.feedback.is-good {
  border: 1px solid rgba(139, 199, 161, 0.34);
  background: rgba(63, 104, 78, 0.22);
}

.feedback.is-bad {
  border: 1px solid rgba(215, 138, 125, 0.35);
  background: rgba(105, 57, 49, 0.27);
}

.feedback.is-running {
  border: 1px solid rgba(142, 164, 199, 0.34);
  background: rgba(72, 87, 116, 0.22);
}

.review-panel {
  display: grid;
  gap: 1rem;
}

.boss-grid,
.profile-grid,
.library-grid {
  display: grid;
  gap: 0.75rem;
}

.boss-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.boss-card,
.library-card,
.profile-stat,
.quest-row {
  padding: 0.9rem;
}

.boss-card strong,
.boss-card small,
.library-card strong,
.library-card p {
  display: block;
}

.boss-card small,
.library-card p {
  margin-top: 0.35rem;
  line-height: 1.5;
}

.profile-screen {
  display: grid;
  gap: 1.25rem;
}

.profile-head {
  justify-content: flex-start;
  align-items: center;
}

.profile-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.settings-panel,
.integration-panel {
  display: grid;
  gap: 0.9rem;
  border: 1px solid rgba(142, 164, 199, 0.28);
  border-radius: var(--radius);
  background:
    linear-gradient(rgba(180, 199, 232, 0.026) 1px, transparent 1px),
    linear-gradient(90deg, rgba(180, 199, 232, 0.026) 1px, transparent 1px),
    #10131a;
  background-size: 42px 42px;
  padding: 1rem;
}

.settings-panel {
  border-color: var(--line);
  background: var(--panel);
}

.settings-panel p,
.integration-panel p {
  margin: 0;
  color: var(--muted);
  line-height: 1.55;
}

.integration-status {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 0.9rem;
  align-items: center;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(180, 199, 232, 0.035);
  padding: 0.9rem;
}

.integration-status.is-connected {
  border-color: rgba(139, 199, 161, 0.35);
  background: rgba(48, 103, 72, 0.18);
}

.integration-status.is-syncing {
  border-color: rgba(199, 167, 106, 0.46);
  background: rgba(199, 167, 106, 0.08);
}

.integration-status.is-disabled {
  opacity: 0.78;
}

.integration-mark {
  display: grid;
  width: 3rem;
  height: 3rem;
  place-items: center;
  border-radius: 0.9rem;
  background: rgba(142, 164, 199, 0.16);
  color: var(--blue-strong);
  font-family: var(--mono);
  font-weight: 900;
}

.integration-status.is-connected .integration-mark {
  background: rgba(139, 199, 161, 0.16);
  color: var(--green);
}

.integration-status.is-syncing .integration-mark {
  background: rgba(199, 167, 106, 0.16);
  color: var(--amber-strong);
}

.integration-status strong,
.integration-status small {
  display: block;
}

.integration-status small {
  margin-top: 0.25rem;
  color: var(--muted);
}

.integration-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
  justify-content: flex-end;
}

.danger-button {
  border-color: rgba(215, 138, 125, 0.42);
  color: #f3a195;
}

.danger-button:disabled {
  cursor: not-allowed;
  opacity: 0.48;
}

.repo-source {
  display: grid;
  gap: 0.35rem;
}

.repo-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.35fr);
  gap: 0.75rem;
}

.repo-source span {
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 850;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.repo-source input {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--code-soft);
  color: var(--ink);
  padding: 0.72rem;
  font-family: var(--mono);
  font-size: 0.82rem;
}

.repo-source input:disabled {
  opacity: 0.62;
}

.integration-how {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(180, 199, 232, 0.035);
  padding: 0.9rem;
}

.integration-how strong {
  display: block;
  margin-bottom: 0.65rem;
}

.integration-how ul {
  display: grid;
  gap: 0.5rem;
  margin: 0;
  padding-left: 1.2rem;
  color: var(--muted);
  line-height: 1.45;
}

.integration-how code {
  color: var(--green);
}

.feedback-note {
  margin: 0.75rem 0 0;
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.45;
}

.feedback-note.is-good {
  color: var(--green);
}

.feedback-note.is-bad {
  color: var(--red);
}

.update-panel {
  display: grid;
  gap: 0.85rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
  padding: 1rem;
}

.update-panel p {
  margin: 0;
  color: var(--muted);
  line-height: 1.5;
}

.section-title {
  margin: 1rem 0 0;
  color: var(--ink);
  font-size: 1rem;
}

.theory-grid {
  display: grid;
  gap: 1rem;
  margin-top: 1rem;
}

.theory-topic-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 12rem), 1fr));
  gap: 0.65rem;
}

.theory-topic-button,
.theory-subtopic-button {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--control);
  color: var(--ink);
  text-align: left;
}

.theory-topic-button {
  min-height: 5rem;
  padding: 0.85rem;
}

.theory-topic-button span,
.theory-topic-button strong {
  display: block;
}

.theory-topic-button span {
  color: var(--amber-strong);
  font-family: var(--mono);
  font-size: 0.72rem;
  font-weight: 900;
}

.theory-topic-button strong {
  margin-top: 0.35rem;
  line-height: 1.2;
}

.theory-topic-button.is-active,
.theory-subtopic-button.is-active {
  border-color: rgba(199, 167, 106, 0.52);
  background: var(--panel-strong);
}

.theory-panel {
  display: grid;
  grid-template-columns: minmax(12rem, 16rem) minmax(0, 1fr);
  gap: 0.9rem;
}

.theory-subtopic-grid {
  display: grid;
  align-content: start;
  gap: 0.5rem;
}

.theory-subtopic-button {
  padding: 0.72rem 0.8rem;
  font-weight: 850;
  line-height: 1.3;
}

.theory-reader {
  display: grid;
  gap: 0.75rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--code-soft);
  padding: 1rem;
}

.theory-reader-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 0.8rem;
}

.theory-reader h3,
.theory-reader p {
  margin: 0;
}

.theory-reader p {
  color: var(--muted);
  line-height: 1.5;
}

.theory-chapter {
  display: grid;
  gap: 0.9rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(20, 23, 32, 0.78);
  padding: 1rem;
}

.theory-chapter-head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) 12rem;
  gap: 0.9rem;
  align-items: stretch;
}

.theory-step {
  display: grid;
  min-width: 6.8rem;
  place-items: center;
  border: 1px solid rgba(199, 167, 106, 0.32);
  border-radius: var(--radius);
  background: rgba(199, 167, 106, 0.1);
  color: var(--amber-strong);
  font-family: var(--mono);
  font-size: 0.78rem;
  font-weight: 950;
  text-align: center;
}

.theory-chapter-copy {
  display: grid;
  align-content: center;
}

.theory-chapter-copy h3,
.theory-chapter-copy p {
  margin: 0;
}

.theory-chapter-copy p {
  margin-top: 0.35rem;
  color: var(--muted);
  line-height: 1.5;
}

.theory-card-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.85rem;
}

.theory-card {
  display: grid;
  gap: 0.75rem;
  align-content: start;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--code-soft);
  padding: 0.9rem;
}

.theory-card-head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 0.75rem;
}

.theory-card-number {
  display: grid;
  width: 2rem;
  height: 2rem;
  place-items: center;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  color: var(--amber-strong);
  font-family: var(--mono);
  font-size: 0.8rem;
  font-weight: 950;
}

.theory-card h4,
.theory-card p {
  margin: 0;
}

.theory-card p {
  margin-top: 0.25rem;
  color: var(--muted);
  line-height: 1.48;
}

.theory-points {
  display: grid;
  gap: 0.38rem;
  margin: 0;
  padding-left: 1.1rem;
  color: var(--muted);
  line-height: 1.45;
}

.theory-code {
  max-width: 100%;
  max-height: 18rem;
  overflow: auto;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--code);
  color: var(--ink);
  margin: 0;
  padding: 0.85rem;
  font-family: var(--mono);
  font-size: 0.78rem;
  line-height: 1.55;
  white-space: pre;
}

.theory-diagram {
  min-height: 8rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background:
    linear-gradient(rgba(180, 199, 232, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(180, 199, 232, 0.04) 1px, transparent 1px),
    var(--code-soft);
  background-size: 22px 22px;
  overflow: hidden;
}

.diagram-detection,
.diagram-start,
.diagram-detr,
.diagram-segmentation,
.diagram-relation,
.diagram-recsys,
.diagram-diffusion {
  display: grid;
  place-items: center;
  padding: 0.8rem;
}

.diagram-start {
  grid-template-columns: 1fr;
  gap: 0.45rem;
}

.shape-chip {
  width: 100%;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  background: rgba(244, 241, 232, 0.055);
  color: var(--ink);
  padding: 0.45rem 0.55rem;
  font-family: var(--mono);
  font-size: 0.72rem;
  font-weight: 850;
  text-align: center;
}

.diagram-image {
  position: relative;
  width: 100%;
  aspect-ratio: 1.45;
  border-radius: var(--radius);
  background: linear-gradient(135deg, #202632, #0e1016);
}

.bbox {
  position: absolute;
  display: grid;
  place-items: end start;
  border: 2px solid var(--amber-strong);
  border-radius: 5px;
  padding: 0.2rem;
  color: var(--ink);
  font-family: var(--mono);
  font-size: 0.62rem;
  font-weight: 850;
}

.bbox.subject {
  inset: 20% 48% 12% 12%;
}

.bbox.object {
  inset: 44% 12% 18% 42%;
  border-color: var(--blue-strong);
}

.diagram-row,
.query-stack,
.target-stack,
.pair-box,
.feature-pills,
.ranked-list {
  display: flex;
  gap: 0.45rem;
  align-items: center;
}

.diagram-row {
  width: 100%;
  margin-top: 0.65rem;
  justify-content: center;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 0.68rem;
}

.diagram-row i,
.diagram-segmentation i,
.diagram-recsys i,
.diagram-diffusion i {
  width: 1.35rem;
  height: 2px;
  border-radius: 99px;
  background: var(--amber);
}

.query-stack,
.target-stack {
  flex-direction: column;
}

.query-stack span,
.target-stack span,
.feature-pills span,
.ranked-list span,
.predicate-pill,
.pair-box span,
.mask-panel {
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  background: rgba(244, 241, 232, 0.055);
  color: var(--ink);
  padding: 0.42rem 0.55rem;
  font-family: var(--mono);
  font-size: 0.7rem;
  font-weight: 850;
}

.match-lines {
  display: grid;
  gap: 0.9rem;
  width: 2.5rem;
}

.match-lines i {
  height: 2px;
  border-radius: 99px;
  background: linear-gradient(90deg, var(--amber), var(--blue-strong));
}

.diagram-segmentation,
.diagram-diffusion {
  grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr) auto minmax(0, 1fr);
  gap: 0.45rem;
}

.mask-panel {
  display: grid;
  width: 100%;
  min-height: 4.8rem;
  place-items: center;
  text-align: center;
}

.mask-panel.prob {
  background: rgba(142, 164, 199, 0.11);
}

.mask-panel.mask {
  background: rgba(199, 167, 106, 0.12);
}

.diagram-relation {
  gap: 0.75rem;
}

.pair-box {
  justify-content: center;
}

.pair-box strong {
  color: var(--amber-strong);
}

.feature-pills {
  flex-wrap: wrap;
  justify-content: center;
}

.predicate-pill {
  border-color: rgba(139, 199, 161, 0.4);
  background: rgba(139, 199, 161, 0.11);
}

.diagram-recsys {
  grid-template-columns: minmax(0, 1fr) auto minmax(0, 0.75fr);
  gap: 0.65rem;
}

.candidate-cloud {
  position: relative;
  width: 100%;
  min-height: 6.5rem;
}

.candidate-cloud span {
  position: absolute;
  width: 2.1rem;
  height: 2.1rem;
  border: 1px solid var(--line-strong);
  border-radius: 50%;
  background: rgba(142, 164, 199, 0.1);
}

.candidate-cloud span:nth-child(1) {
  left: 7%;
  top: 18%;
}

.candidate-cloud span:nth-child(2) {
  left: 42%;
  top: 6%;
  background: rgba(199, 167, 106, 0.13);
}

.candidate-cloud span:nth-child(3) {
  right: 12%;
  top: 28%;
}

.candidate-cloud span:nth-child(4) {
  left: 28%;
  bottom: 8%;
}

.candidate-cloud span:nth-child(5) {
  right: 22%;
  bottom: 15%;
  background: rgba(139, 199, 161, 0.1);
}

.ranked-list {
  flex-direction: column;
}

.noise-frame {
  width: 100%;
  min-height: 4.8rem;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  background: linear-gradient(135deg, rgba(199, 167, 106, 0.18), rgba(142, 164, 199, 0.12));
}

.noise-frame.noisy {
  background:
    radial-gradient(circle at 20% 30%, rgba(244, 241, 232, 0.75) 0 1px, transparent 2px),
    radial-gradient(circle at 62% 58%, rgba(244, 241, 232, 0.55) 0 1px, transparent 2px),
    radial-gradient(circle at 82% 22%, rgba(244, 241, 232, 0.45) 0 1px, transparent 2px),
    #171b25;
  background-size: 10px 10px, 13px 13px, 16px 16px, auto;
}

.noise-frame.pure {
  background:
    radial-gradient(circle, rgba(244, 241, 232, 0.62) 0 1px, transparent 2px),
    #11141c;
  background-size: 9px 9px;
}

.link-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
}

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

.pack-tools {
  display: grid;
  gap: 0.9rem;
  margin-top: 1.1rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
  padding: 1rem;
}

.pack-tools h3,
.pack-tools p {
  margin: 0.25rem 0 0;
}

.pack-tools p {
  color: var(--muted);
  line-height: 1.5;
}

.pack-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
}

.pack-source {
  display: grid;
  gap: 0.35rem;
}

.pack-source span {
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 850;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.pack-source input {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--code-soft);
  color: var(--ink);
  padding: 0.72rem;
  font-family: var(--mono);
  font-size: 0.82rem;
}

.pack-status {
  margin-top: 0;
}

.daily-card > div,
.queue-card > div,
.weak-list,
.reference-list,
.leaderboard-list {
  display: grid;
  gap: 0.55rem;
}

.quest-row,
.mini-row,
.queue-row,
.leaderboard-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 0.75rem;
  align-items: center;
}

.quest-row strong {
  color: var(--amber-strong);
  white-space: nowrap;
}

.mini-row {
  border-bottom: 1px solid var(--line);
  padding-bottom: 0.55rem;
  color: var(--muted);
  font-size: 0.88rem;
}

.mini-row:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.mini-row strong,
.leaderboard-row strong {
  color: var(--ink);
}

.queue-row {
  width: 100%;
  padding: 0.75rem;
  color: var(--ink);
  text-align: left;
}

.queue-row em {
  color: var(--muted);
  font-size: 0.76rem;
  font-style: normal;
  white-space: nowrap;
}

.queue-row.is-current,
.leaderboard-row.is-you {
  border-color: rgba(199, 167, 106, 0.54);
  background: var(--panel-strong);
}

.leaderboard-panel {
  display: grid;
  gap: 0.75rem;
}

.leaderboard-row {
  padding: 0.75rem;
}

.leaderboard-row span,
.leaderboard-row small {
  display: block;
}

.leaderboard-row strong {
  font-family: var(--mono);
}

.review-screen {
  display: grid;
  gap: 1rem;
}

.review-layout {
  display: grid;
  grid-template-columns: minmax(13rem, 18rem) minmax(0, 1fr);
  gap: 1rem;
}

.review-list,
.review-detail,
.review-comments,
.review-comment-form {
  display: grid;
  align-content: start;
  gap: 0.7rem;
  min-width: 0;
}

.review-row {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--control);
  color: var(--ink);
  padding: 0.75rem;
  text-align: left;
}

.review-row.is-active,
.review-row:hover {
  border-color: rgba(199, 167, 106, 0.48);
  background: var(--control-hover);
}

.review-row strong,
.review-row small,
.review-detail-head small {
  display: block;
}

.review-row small,
.review-detail-head small,
.review-comment span {
  color: var(--muted);
}

.review-row em {
  min-width: 2rem;
  border-radius: 999px;
  background: var(--panel-strong);
  color: var(--blue-strong);
  font-style: normal;
  font-weight: 900;
  padding: 0.25rem 0.5rem;
  text-align: center;
}

.review-detail-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
}

.review-code {
  max-height: 28rem;
  overflow: auto;
}

.review-comment {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel-soft);
  padding: 0.75rem;
}

.review-comment p {
  margin: 0.35rem 0 0;
  white-space: pre-wrap;
}

.empty-state {
  border: 1px dashed var(--line-strong);
  border-radius: var(--radius);
  color: var(--muted);
  padding: 1rem;
}

.progress-bar {
  height: 0.7rem;
  overflow: hidden;
  border-radius: 999px;
  background: var(--code-soft);
}

.progress-bar span {
  display: block;
  width: 0;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--amber), var(--blue-strong));
  transition: width 220ms ease;
}

.mobile-tabs {
  display: none;
}

.auth-modal,
.guide-modal {
  position: fixed;
  inset: 0;
  z-index: 80;
  display: grid;
  place-items: center;
  padding: 1rem;
  background: rgba(0, 0, 0, 0.62);
  backdrop-filter: blur(10px);
}

.auth-modal[hidden],
.guide-modal[hidden] {
  display: none;
}

body.auth-required .topbar,
body.auth-required .workspace,
body.auth-required .mobile-tabs {
  filter: saturate(0.72) brightness(0.72);
  pointer-events: none;
  user-select: none;
}

.auth-panel,
.guide-panel {
  width: min(100%, 34rem);
  padding: 1rem;
  box-shadow: 0 24px 80px rgba(0, 0, 0, 0.38);
}

.guide-panel {
  width: min(100%, 64rem);
  max-height: min(90vh, 55rem);
  overflow: auto;
}

.guide-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.9rem;
  margin-top: 1rem;
}

.guide-card {
  display: grid;
  gap: 0.75rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
  padding: 0.9rem;
}

.guide-card h3,
.guide-card p {
  margin: 0;
}

.guide-card p {
  color: var(--muted);
  line-height: 1.48;
}

.guide-shot {
  min-height: 9.5rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background:
    linear-gradient(rgba(180, 199, 232, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(180, 199, 232, 0.035) 1px, transparent 1px),
    var(--code-soft);
  background-size: 22px 22px;
  overflow: hidden;
}

.guide-shot-roadmap {
  display: grid;
  grid-template-columns: 4.5rem minmax(0, 1fr);
  gap: 0.8rem;
  padding: 0.7rem;
}

.shot-sidebar,
.shot-main,
.shot-code,
.shot-controls,
.shot-pack-list,
.shot-gh-lines {
  display: grid;
  gap: 0.5rem;
}

.shot-sidebar span,
.shot-title,
.shot-code span,
.shot-feedback,
.shot-pack-line,
.shot-pack-list span,
.shot-gh-lines span {
  border-radius: 999px;
  background: rgba(244, 241, 232, 0.11);
}

.shot-sidebar span {
  height: 1.35rem;
}

.shot-title {
  width: 70%;
  height: 1.2rem;
}

.shot-path {
  display: flex;
  gap: 0.55rem;
  align-items: center;
  margin-top: 1.2rem;
}

.shot-path i {
  width: 2.3rem;
  height: 2.3rem;
  border: 1px solid rgba(199, 167, 106, 0.5);
  border-radius: 50%;
  background: rgba(199, 167, 106, 0.14);
}

.guide-shot-lesson {
  display: grid;
  gap: 0.65rem;
  padding: 0.75rem;
}

.shot-code span {
  height: 1.15rem;
  border-radius: var(--radius);
}

.shot-code span:nth-child(2) {
  width: 82%;
}

.shot-code span:nth-child(3) {
  width: 64%;
}

.shot-controls {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.shot-controls i,
.shot-pack-buttons i {
  height: 1.65rem;
  border-radius: var(--radius);
  background: rgba(199, 167, 106, 0.18);
}

.shot-feedback {
  height: 1.9rem;
  border: 1px solid rgba(139, 199, 161, 0.32);
  background: rgba(139, 199, 161, 0.1);
}

.guide-shot-packs {
  display: grid;
  align-content: center;
  gap: 0.55rem;
  padding: 0.75rem;
}

.shot-pack-line {
  width: 62%;
  height: 1rem;
}

.shot-pack-line.wide {
  width: 90%;
}

.shot-pack-buttons {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.5rem;
}

.shot-pack-list {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.shot-pack-list span {
  height: 1.6rem;
}

.guide-shot-github {
  display: grid;
  grid-template-columns: 3.5rem minmax(0, 1fr) 2rem;
  gap: 0.75rem;
  align-items: center;
  padding: 0.85rem;
}

.shot-gh-mark {
  display: grid;
  width: 3.5rem;
  height: 3.5rem;
  place-items: center;
  border-radius: var(--radius);
  background: rgba(142, 164, 199, 0.16);
  color: var(--blue-strong);
  font-family: var(--mono);
  font-weight: 950;
}

.shot-gh-lines span {
  height: 1rem;
}

.shot-gh-lines span:nth-child(2) {
  width: 78%;
}

.shot-gh-lines span:nth-child(3) {
  width: 58%;
}

.shot-gh-ok {
  width: 1.65rem;
  height: 1.65rem;
  border-radius: 50%;
  background: rgba(139, 199, 161, 0.22);
  border: 1px solid rgba(139, 199, 161, 0.55);
}

.guide-actions {
  justify-content: flex-start;
}

.auth-hint {
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 650;
  line-height: 1.35;
}

.auth-hint.is-good {
  color: var(--green);
}

.auth-hint.is-bad {
  color: var(--red);
}

.auth-actions {
  justify-content: flex-start;
}

.github-auth-button {
  width: 100%;
  display: grid;
  grid-template-columns: 3rem minmax(0, 1fr);
  gap: 0.85rem;
  align-items: center;
  margin-top: 1rem;
  border: 1px solid rgba(142, 164, 199, 0.32);
  border-radius: var(--radius);
  background: linear-gradient(135deg, rgba(142, 164, 199, 0.12), rgba(199, 167, 106, 0.08));
  color: var(--ink);
  padding: 0.9rem;
  text-align: left;
}

.github-auth-button:hover {
  border-color: rgba(199, 167, 106, 0.5);
  background: linear-gradient(135deg, rgba(142, 164, 199, 0.18), rgba(199, 167, 106, 0.12));
}

.github-auth-button.is-unavailable {
  border-style: dashed;
}

.github-auth-button strong,
.github-auth-button small {
  display: block;
}

.github-auth-button small {
  margin-top: 0.18rem;
  color: var(--muted);
  font-size: 0.8rem;
  line-height: 1.35;
}

.github-auth-mark {
  display: grid;
  width: 3rem;
  height: 3rem;
  place-items: center;
  border-radius: var(--radius);
  background: rgba(142, 164, 199, 0.16);
  color: var(--blue-strong);
  font-family: var(--mono);
  font-weight: 950;
}

.github-button {
  border-color: rgba(218, 226, 240, 0.18);
  background: #10131a;
  color: var(--ink);
}

.github-button:hover {
  border-color: rgba(199, 167, 106, 0.46);
  background: var(--control);
}

.icon-button {
  min-width: 2.45rem;
  padding-inline: 0.75rem;
  font-size: 1.2rem;
}

body.focus-mode .skill-rail,
body.focus-mode .progress-sidebar,
body.focus-mode .review-panel,
body.focus-mode .roadmap-hero {
  display: none;
}

body.focus-mode .workspace {
  grid-template-columns: minmax(0, 1fr);
  max-width: 72rem;
}

body.focus-mode .screen-stack {
  grid-column: 1;
}

@media (max-width: 980px) {
  .mission-strip {
    display: grid;
  }

  .mission-strip h1 {
    max-width: none;
  }

  .stat-grid {
    width: 100%;
  }
}

@media (max-width: 780px) {
  body {
    padding-bottom: 4.6rem;
  }

  .topbar {
    min-height: auto;
    padding: 0.75rem;
  }

  .brand small {
    display: none;
  }

  .brand-mark {
    width: 2.4rem;
    height: 2.4rem;
  }

  .top-actions {
    justify-content: flex-end;
    gap: 0.4rem;
  }

  .account-menu-button {
    max-width: 10rem;
  }

  .top-actions .ghost-button {
    display: none;
  }

  .workspace {
    display: block;
    width: 100%;
    padding: 0.75rem 0.75rem 1rem;
  }

  .skill-rail,
  .progress-sidebar {
    position: static;
    max-height: none;
  }

  .skill-rail {
    display: none;
    margin-bottom: 0.75rem;
  }

  body[data-screen="roadmap"] .skill-rail {
    display: block;
  }

  .app-screen {
    gap: 0.75rem;
  }

  .mission-strip,
  .lesson-meta,
  .profile-head {
    display: grid;
  }

  .mission-strip h1 {
    font-size: 1.9rem;
  }

  .stat-grid,
  .profile-grid,
  .repo-grid,
  .review-layout,
  .boss-grid,
  .library-grid,
  .theory-grid,
  .theory-card-list,
  .guide-grid {
    grid-template-columns: 1fr;
  }

  .theory-chapter-head,
  .theory-card,
  .theory-panel {
    grid-template-columns: 1fr;
  }

  .theory-diagram {
    min-height: 9.5rem;
  }

  .road-node {
    grid-template-columns: 3rem minmax(0, 1fr);
    padding: 0.9rem;
  }

  .brief-row {
    grid-template-columns: 1fr;
    gap: 0.2rem;
  }

  .fill-row {
    grid-template-columns: 1fr;
    gap: 0.35rem;
  }

  .block-bank {
    grid-template-columns: 1fr;
  }

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

  .integration-status {
    grid-template-columns: auto minmax(0, 1fr);
  }

  .integration-actions {
    grid-column: 1 / -1;
    justify-content: stretch;
  }

  .integration-actions button {
    flex: 1;
  }

  .lesson-controls button {
    width: 100%;
  }

  .mobile-tabs {
    position: fixed;
    right: 0.75rem;
    bottom: 0.75rem;
    left: 0.75rem;
    z-index: 60;
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 0.4rem;
    border: 1px solid var(--line);
    border-radius: 12px;
    background: rgba(13, 15, 22, 0.94);
    padding: 0.35rem;
    backdrop-filter: blur(18px);
  }

  .mobile-tab {
    min-height: 2.7rem;
    padding: 0.45rem;
    border-color: transparent;
    background: transparent;
    font-size: 0.72rem;
  }

  body.focus-mode .skill-rail {
    display: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    transition: none !important;
    scroll-behavior: auto !important;
  }
}