@font-face {
  font-family: Orbitron;
  src: url("./fonts/Orbitron.woff2") format("woff2");
  font-display: swap;
  font-weight: 400 900;
}
@font-face {
  font-family: "JetBrains Mono";
  src: url("./fonts/JetBrainsMono.woff2") format("woff2");
  font-display: swap;
  font-weight: 100 800;
}
@font-face {
  font-family: Inter;
  src: url("./fonts/Inter.woff2") format("woff2");
  font-display: swap;
  font-weight: 100 900;
}
:root {
  color-scheme: dark;
  --bg: #0b0d14;
  --panel: #131620;
  --panel2: #191c29;
  --line: #272b3c;
  --text: #f2f3fa;
  --muted: #a0a8bd;
  --purple: #b29aff;
  --cyan: #78dfcf;
  --shadow: 0 20px 60px #0003;
}
* {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
  scroll-padding-top: 100px;
}
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font:
    15px/1.65 Inter,
    system-ui,
    -apple-system,
    BlinkMacSystemFont,
    "Segoe UI",
    sans-serif;
}
a {
  color: inherit;
  text-decoration: none;
}
a:hover {
  color: var(--purple);
}
button,
input,
textarea,
select {
  font: inherit;
}
button,
a,
input,
textarea,
select,
summary {
  -webkit-tap-highlight-color: transparent;
}
button {
  cursor: pointer;
}
img,
svg,
iframe {
  max-width: 100%;
}
button:focus-visible,
a:focus-visible,
summary:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 5px;
}
h1,
h2,
h3 {
  line-height: 1.18;
  letter-spacing: -0.045em;
  margin: 0 0 20px;
  font-weight: 650;
}
h1 {
  font-size: clamp(34px, 3.7vw, 58px);
}
h2 {
  font-size: clamp(26px, 2.5vw, 38px);
}
h3 {
  font-size: 22px;
  letter-spacing: -0.025em;
  margin-bottom: 12px;
}
p {
  margin: 0 0 20px;
  color: var(--muted);
}
small {
  display: block;
  font-size: 12px;
  line-height: 1.6;
  color: var(--muted);
}
strong {
  font-weight: 600;
}
ul,
ol {
  padding-left: 24px;
}
.svg-defs {
  position: absolute;
  width: 0;
  height: 0;
  overflow: hidden;
}
.icon {
  width: 20px;
  height: 20px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.7;
  flex-shrink: 0;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.site-header {
  min-height: 84px;
  border-bottom: 1px solid #ffffff0d;
  padding: 20px max(32px, calc((100vw - 1280px) / 2));
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 28px;
  position: relative;
  z-index: 20;
  background: #0b0d14f5;
}
.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 800;
  letter-spacing: 0.03em;
  font-size: 17px;
  white-space: nowrap;
}
.brand .sentx-wordmark {
  width: 156px;
  height: 53px;
  flex-shrink: 0;
  overflow: visible;
}
.brand-academy {
  border-left: 1px solid #454052;
  padding-left: 15px;
  color: #c5cbdc;
  font-size: 10px;
  font-weight: 500;
  letter-spacing: .18em;
  text-transform: uppercase;
}
.site-footer .brand .sentx-wordmark { width: 124px; height: 43px; }
@media(max-width:600px) {
  .brand .sentx-wordmark { width: 126px; height: 43px; }
  .brand-academy { font-size: 8px; padding-left: 10px; letter-spacing: .15em; }
}
.brand-mark {
  font-size: 25px;
  line-height: 38px;
  width: 42px;
  height: 42px;
  background: linear-gradient(145deg, #a289ed, #6651ba);
  color: #fff;
  border-radius: 11px;
  text-align: center;
  font-weight: 900;
  letter-spacing: -5px;
  padding-right: 5px;
}
.brand-mark span {
  font-size: 22px;
  color: #bcffe7;
}
.brand-divider {
  color: #5e627b;
  margin: 0 11px;
  font-weight: 300;
}
.brand-light {
  font-weight: 450;
  color: #b6bdd1;
  font-size: 12px;
  letter-spacing: 0.17em;
}
.primary-nav {
  display: flex;
  align-items: center;
  gap: 34px;
  font-size: 13px;
  font-weight: 500;
}
.nav-logout button {
  margin: 0;
}
.menu-toggle {
  display: none;
  background: none;
  color: var(--text);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 6px 12px;
}
.button {
  display: inline-flex;
  justify-content: center;
  align-items: center;
  gap: 12px;
  background: var(--purple);
  border: 1px solid transparent;
  border-radius: 9px;
  padding: 14px 23px;
  font-size: 13px;
  font-weight: 650;
  line-height: 1.5;
  color: #171025;
  transition:
    background 0.18s,
    transform 0.18s;
  text-align: center;
}
.button:hover {
  background: #c3b0ff;
  color: #171025;
  transform: translateY(-1px);
}
.button.secondary {
  background: #ffffff03;
  color: var(--text);
  border-color: var(--line);
}
.button.secondary:hover {
  background: #242335;
  border-color: #8d78c0;
}
.button.small {
  font-size: 12px;
  padding: 10px 16px;
}
.button.full {
  width: 100%;
}
.button:disabled {
  opacity: 0.6;
  cursor: default;
  transform: none;
}
.text-button {
  background: transparent;
  border: 0;
  color: var(--muted);
  padding: 8px 0;
  font-size: 13px;
}
.danger {
  color: #fca5a5;
}
.actions {
  display: flex;
  gap: 12px;
  align-items: center;
  flex-wrap: wrap;
}
.page {
  max-width: 1280px;
  margin: auto;
  padding-left: 32px;
  padding-right: 32px;
}
.section {
  margin-top: 60px;
  margin-bottom: 60px;
}
.eyebrow {
  font-size: 10px;
  letter-spacing: 0.17em;
  color: var(--purple);
  font-weight: 650;
  margin-bottom: 18px;
}
.pill {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 8px 12px;
  border: 1px solid #b29aff30;
  background: #b29aff08;
  border-radius: 30px;
}
.status-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 10px #78dfcf66;
}
.hero {
  padding-top: 88px;
  padding-bottom: 88px;
  display: grid;
  grid-template-columns: 1.15fr 1fr;
  gap: 22px;
  align-items: center;
  min-height: 630px;
}
.hero h1 {
  font-size: clamp(42px, 4.8vw, 70px);
  line-height: 1.07;
  letter-spacing: -0.055em;
  margin-bottom: 27px;
}
.hero h1 span,
.auth-story h1 span {
  background: linear-gradient(100deg, #b69aff, #8ccde3);
  color: transparent;
  background-clip: text;
}
.hero-description {
  font-size: 16px;
  line-height: 1.8;
  max-width: 500px;
  margin-bottom: 30px;
}
.hero-meta {
  display: flex;
  gap: 24px;
  margin-top: 30px;
  color: #8e95ab;
  font-size: 11px;
  align-items: center;
  flex-wrap: wrap;
}
.hero-meta span {
  display: flex;
  align-items: center;
  gap: 7px;
}
.hero-meta .icon {
  width: 15px;
  height: 15px;
  color: var(--cyan);
}
.hero-visual {
  height: 420px;
  position: relative;
  isolation: isolate;
  background: radial-gradient(ellipse at center, #7656cc28, transparent 65%);
}
.orbit {
  position: absolute;
  border: 1px solid #b29aff29;
  border-radius: 50%;
  inset: 50px 40px;
  transform: rotate(-24deg);
  z-index: -1;
}
.orbit-one:before {
  content: "";
  width: 8px;
  height: 8px;
  background: var(--cyan);
  border-radius: 50%;
  position: absolute;
  top: 41px;
  left: 40px;
  box-shadow: 0 0 14px #78dfcf;
}
.orbit-two {
  inset: 82px 0;
  transform: rotate(40deg);
  border-style: dashed;
  opacity: 0.6;
}
.hero-emblem {
  position: absolute;
  left: 50%;
  top: 48%;
  transform: translate(-50%, -50%) rotate(-8deg);
  width: 166px;
  height: 186px;
  border: 1px solid #b29aff65;
  background: linear-gradient(135deg, #4f3b79cc, #161723);
  border-radius: 36px;
  box-shadow:
    inset 0 0 40px #b29aff13,
    0 35px 90px #0005;
  display: grid;
  place-items: center;
}
.hero-emblem svg {
  width: 82px;
  height: 82px;
  fill: none;
  stroke: #d0bfff;
  stroke-width: 1;
  filter: drop-shadow(0 0 20px #a985ff);
}
.floating-label {
  position: absolute;
  display: flex;
  align-items: center;
  gap: 12px;
  background: linear-gradient(140deg, #1e2231, #12151e);
  border: 1px solid #343047;
  border-radius: 12px;
  padding: 15px 18px;
  box-shadow: var(--shadow);
  font-size: 12px;
  font-weight: 550;
}
.floating-label span {
  color: #717b94;
  margin-left: 10px;
  font: 10px monospace;
}
.floating-label .icon {
  color: var(--purple);
}
.label-web {
  top: 26px;
  left: 18px;
}
.label-ios {
  right: 0;
  top: 130px;
}
.label-ai {
  left: 20px;
  bottom: 59px;
}
.label-ios .icon {
  color: var(--cyan);
}
.label-ai .icon {
  color: #e5a8ff;
}
.visual-caption {
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  font: 8px monospace;
  color: #6e758e;
  letter-spacing: 0.14em;
  white-space: nowrap;
}
.path-strip {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  padding-top: 30px;
  padding-bottom: 30px;
  gap: 26px;
}
.path-strip > div {
  position: relative;
  padding-left: 34px;
}
.path-strip span {
  position: absolute;
  left: 0;
  top: 0;
  color: var(--purple);
  font: 11px monospace;
}
.path-strip strong {
  font-size: 12px;
}
.path-strip p {
  font-size: 11px;
  margin: 5px 0 0;
}
.section-heading {
  display: flex;
  justify-content: space-between;
  align-items: end;
  gap: 24px;
  margin-bottom: 28px;
}
.section-heading h2,
.section-heading h1 {
  margin-bottom: 0;
}
.section-heading .eyebrow {
  margin-bottom: 12px;
}
.section-heading > p {
  max-width: 290px;
  font-size: 13px;
  margin: 0;
}
.course-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
}
.course-card {
  border: 1px solid var(--line);
  border-radius: 16px;
  overflow: hidden;
  background: var(--panel);
  transition:
    border-color 0.2s,
    transform 0.2s;
}
.course-card:hover {
  border-color: #8d78c0;
  transform: translateY(-4px);
}
.card-art {
  height: 192px;
  position: relative;
  overflow: hidden;
  background: radial-gradient(ellipse at center, #896cd035, #151621 68%);
}
.art-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(#b29aff0b 1px, transparent 1px),
    linear-gradient(90deg, #b29aff0b 1px, transparent 1px);
  background-size: 26px 26px;
  mask-image: radial-gradient(ellipse at center, #000, transparent);
}
.card-index,
.art-tag {
  position: absolute;
  left: 22px;
  top: 20px;
  font: 8px monospace;
  letter-spacing: 0.13em;
  color: #9d93bd;
}
.art-tag {
  top: auto;
  bottom: 18px;
  font-size: 8px;
}
.art-icon {
  position: absolute;
  left: 50%;
  top: 52%;
  transform: translate(-50%, -50%) rotate(-7deg);
  width: 77px;
  height: 77px;
  display: grid;
  place-items: center;
  border: 1px solid #b29aff65;
  border-radius: 21px;
  background: linear-gradient(145deg, #a487ed29, #2f21402e);
  box-shadow: 0 15px 35px #0005;
}
.art-icon svg {
  width: 36px;
  height: 36px;
  fill: none;
  stroke: #c8b5ff;
  stroke-width: 1.2;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.track-ios .card-art {
  background: radial-gradient(ellipse at center, #45b6ba29, #151b21 68%);
}
.track-ios .art-icon {
  border-color: #78dfcf60;
}
.track-ios .art-icon svg {
  stroke: var(--cyan);
}
.track-llm .card-art {
  background: radial-gradient(ellipse at center, #c866ac2b, #1b1521 68%);
}
.track-llm .art-icon svg {
  stroke: #e5a8e3;
}
.card-body {
  padding: 25px;
}
.card-body .eyebrow {
  font-size: 8px;
  letter-spacing: 0.11em;
  margin-bottom: 13px;
  color: #929ab2;
}
.eyebrow span {
  margin: 0 5px;
}
.card-body h3 {
  font-size: 22px;
  letter-spacing: -0.035em;
}
.card-body p {
  font-size: 12px;
  line-height: 1.8;
  min-height: 66px;
}
.card-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-top: 1px solid var(--line);
  padding-top: 16px;
  color: #b3b9cc;
  font-size: 10px;
}
.circle-link {
  border: 1px solid var(--line);
  border-radius: 50%;
  width: 33px;
  height: 33px;
  display: grid;
  place-items: center;
}
.fine-print {
  font-size: 11px;
  line-height: 1.7;
  color: #858da4;
  margin-top: 18px;
}
.fine-print a,
.prose a,
.checkbox a {
  text-decoration: underline;
  text-underline-offset: 3px;
  color: var(--purple);
}
.feature-panel {
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 48px;
  background: linear-gradient(120deg, #191624, #11141d);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 100px;
}
.feature-panel > div > p {
  font-size: 14px;
  max-width: 360px;
}
.text-link {
  color: var(--purple);
  font-size: 13px;
  font-weight: 550;
}
.feature-list {
  display: flex;
  flex-direction: column;
  gap: 30px;
  justify-content: center;
}
.feature-list > div {
  display: flex;
  gap: 22px;
}
.feature-list .icon {
  width: 25px;
  height: 25px;
  color: var(--purple);
}
.feature-list h3 {
  font-size: 15px;
  margin-bottom: 7px;
}
.feature-list p {
  font-size: 12px;
  margin: 0;
}
.cta-panel {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 30px;
  border-top: 1px solid var(--line);
  padding: 32px 0;
}
.cta-panel h2 {
  font-size: 32px;
}
.cta-panel p {
  margin: 0;
}
.site-footer {
  border-top: 1px solid var(--line);
  padding: 35px max(32px, calc((100vw - 1216px) / 2));
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
  color: #858da4;
  font-size: 11px;
}
.site-footer .brand {
  font-size: 13px;
}
.site-footer .brand-light {
  font-size: 9px;
}
.site-footer > div {
  display: flex;
  gap: 24px;
}
.panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 28px;
}
.narrow {
  max-width: 840px;
}
.muted {
  color: var(--muted);
}
.accent {
  color: var(--purple);
}
.lead {
  font-size: 16px;
  max-width: 750px;
  margin: 18px 0 30px;
}
.back-link {
  display: inline-block;
  color: var(--muted);
  font-size: 12px;
  margin-bottom: 25px;
}
.tag {
  display: inline-flex;
  font-size: 9px;
  text-transform: uppercase;
  letter-spacing: 0.055em;
  font-weight: 600;
  padding: 5px 9px;
  border-radius: 5px;
  background: #aaa0ce10;
  color: #b2aec7;
  border: 1px solid #aaa0ce20;
  white-space: nowrap;
}
.tag.success {
  background: #5cc1a815;
  border-color: #5cc1a825;
  color: #8de2c8;
}
.notice {
  border: 1px solid #b29aff33;
  border-radius: 8px;
  padding: 16px 20px;
  margin: 22px 0;
  background: #b29aff07;
  font-size: 12px;
  color: #c0b6d5;
}
.flash {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 24px 32px;
  border: 1px solid #78dfcf40;
  border-radius: 10px;
  padding: 16px 22px;
  background: #78dfcf0a;
  font-size: 13px;
  color: #99e0d4;
}
.course-hero {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: 60px;
}
.apply-panel {
  align-self: start;
}
.apply-panel h3 {
  margin-top: 22px;
}
.course-hero h1 {
  margin-bottom: 26px;
}
.curriculum {
  list-style: none;
  padding: 0;
  margin: 0;
  border: 1px solid var(--line);
  border-radius: 12px;
  overflow: hidden;
}
.curriculum li {
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 18px 22px;
  background: var(--panel);
  border-bottom: 1px solid var(--line);
  font-size: 13px;
}
.curriculum li:last-child {
  border-bottom: 0;
}
.curriculum li > a,
.curriculum li > strong {
  flex: 1;
  min-width: 0;
}
.lesson-number {
  font: 11px monospace;
  color: #8f85b0;
  min-width: 20px;
}
.curriculum .tag {
  margin-left: auto;
}
.prose {
  line-height: 1.85;
  overflow-wrap: anywhere;
}
.prose p {
  color: #b7bfd1;
}
.prose h2 {
  font-size: 27px;
  margin-top: 30px;
}
.prose h3 {
  font-size: 21px;
  margin-top: 25px;
}
.prose pre {
  overflow: auto;
  padding: 20px;
  background: #0b0d14;
  border: 1px solid var(--line);
  border-radius: 8px;
  font-size: 12px;
}
.prose code {
  color: #c7b5fc;
}
.prose blockquote {
  border-left: 2px solid var(--purple);
  padding-left: 20px;
  margin-left: 0;
}
.prose li {
  color: #b7bfd1;
}
.prose img {
  height: auto;
  border-radius: 8px;
}
.auth-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 90px;
  padding-top: 75px;
  padding-bottom: 75px;
  max-width: 1150px;
  align-items: center;
}
.auth-story h1 {
  font-size: 54px;
}
.auth-story > p {
  max-width: 320px;
}
.auth-art {
  height: 170px;
  display: flex;
  align-items: center;
}
.auth-art svg {
  height: 130px;
  width: 130px;
  fill: none;
  stroke: #a28ad1;
  stroke-width: 0.7;
  filter: drop-shadow(0 0 25px #a87dfa);
}
.auth-form {
  padding: 36px;
}
.auth-form h2 {
  font-size: 29px;
  margin-top: 24px;
}
.auth-form > p {
  font-size: 13px;
}
.auth-switch {
  text-align: center;
  border-top: 1px solid var(--line);
  padding-top: 25px;
  margin: 24px 0 0;
  font-size: 12px;
}
.auth-switch a {
  color: var(--purple);
}
.auth-form > .text-link {
  display: block;
  margin-top: 20px;
  text-align: center;
}
label {
  display: block;
  font-size: 12px;
  font-weight: 550;
  margin: 18px 0 8px;
  color: #c8cedf;
}
input,
textarea,
select {
  background: #0d1019;
  border: 1px solid #33384d;
  border-radius: 8px;
  color: var(--text);
  padding: 11px 13px;
  width: 100%;
  font-size: 13px;
  min-width: 0;
  max-width: 100%;
}
textarea {
  resize: vertical;
}
input:focus,
textarea:focus,
select:focus {
  outline: 2px solid #b29aff45;
  border-color: var(--purple);
}
input::placeholder,
textarea::placeholder {
  color: #798199;
}
form > button {
  margin-top: 20px;
}
form small {
  margin: 7px 0 16px;
}
.checkbox {
  display: flex;
  align-items: start;
  gap: 10px;
  font-weight: 400;
  cursor: pointer;
  font-size: 12px;
}
.checkbox input {
  width: 17px;
  height: 17px;
  margin: 3px 0 0;
  accent-color: #a98af5;
  flex-shrink: 0;
}
.checkbox span {
  line-height: 1.6;
}
.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 22px;
}
.inline-form {
  display: flex;
  gap: 12px;
  margin-top: 20px;
  align-items: center;
}
.inline-form button {
  margin: 0;
  white-space: nowrap;
}
.inline-form select {
  max-width: 160px;
}
.upload-box {
  border: 1px dashed #444058;
  padding: 0 20px 8px;
  border-radius: 10px;
  margin: 25px 0;
}
.upload-box button {
  margin-top: 0;
}
.upload-status {
  font-size: 12px;
  margin-top: 12px;
}
.workspace {
  display: flex;
  min-height: calc(100vh - 180px);
}
.sidebar {
  width: 230px;
  flex-shrink: 0;
  border-right: 1px solid var(--line);
  padding: 30px 18px;
  display: flex;
  flex-direction: column;
  gap: 5px;
  background: #0e1018;
}
.sidebar-label {
  font-size: 8px;
  letter-spacing: 0.15em;
  color: #717b95;
  margin: 14px 12px;
}
.sidebar-label:not(:first-child) {
  margin-top: 30px;
}
.side-link {
  display: flex;
  align-items: center;
  gap: 11px;
  padding: 12px 13px;
  border-radius: 7px;
  font-size: 11px;
  color: #a1a9bd;
}
.side-link.active {
  background: #b29aff10;
  color: #c0aaff;
}
.side-link:hover {
  background: #ffffff05;
}
.side-link .icon {
  width: 17px;
  height: 17px;
}
.sidebar-bottom {
  margin-top: auto;
  padding: 35px 12px 0;
}
.profile {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 10px;
}
.profile strong {
  font-size: 11px;
  display: block;
  overflow-wrap: anywhere;
}
.profile small {
  font-size: 9px;
  text-transform: capitalize;
}
.avatar {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  background: #55437c;
  color: #dccfff;
  border-radius: 50%;
  font-size: 14px;
  flex-shrink: 0;
}
.workspace-main {
  flex: 1;
  min-width: 0;
}
.workspace-page {
  max-width: 1250px;
  padding: 46px;
  margin: auto;
}
.workspace-page.narrow {
  max-width: 850px;
}
.workspace-page > h1 {
  font-size: clamp(30px, 3vw, 46px);
}
.workspace-page .section {
  margin: 36px 0;
}
.workspace-page .section-heading h1 {
  font-size: 36px;
}
.workspace-page .section-heading p {
  margin: 13px 0 0;
  font-size: 13px;
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
  margin: 32px 0;
}
.stat {
  background: linear-gradient(130deg, #181b28, #12151f);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 22px;
}
.stat > span {
  font-size: 11px;
  color: #a1aac0;
}
.stat > strong {
  display: block;
  font-size: 35px;
  letter-spacing: -0.05em;
  margin: 7px 0 0;
}
.stat strong small {
  display: inline;
  font-size: 17px;
}
.stat > small {
  font-size: 10px;
  margin-top: 5px;
}
.stat progress {
  margin: 12px 0 0;
}
.learning-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 22px;
}
.learning-card .section-heading {
  align-items: start;
  gap: 14px;
  margin-bottom: 12px;
}
.learning-card h3 {
  font-size: 20px;
  margin: 0;
}
.learning-card p {
  font-size: 12px;
}
.learning-card > .button {
  margin: 16px 0;
}
.learning-card > small {
  font-size: 10px;
}
.progress-label {
  display: flex;
  justify-content: space-between;
  font-size: 11px;
  color: #a0a8bd;
  margin-top: 24px;
}
progress {
  appearance: none;
  height: 5px;
  border: 0;
  border-radius: 5px;
  overflow: hidden;
  width: 100%;
  display: block;
  background: #272a3b;
  margin: 10px 0;
}
progress::-webkit-progress-bar {
  background: #272a3b;
}
progress::-webkit-progress-value {
  background: linear-gradient(90deg, #9b80e6, #8ed1e0);
}
progress::-moz-progress-bar {
  background: #ad94ef;
}
.empty-state {
  text-align: center;
  padding: 55px 30px;
}
.empty-state p {
  max-width: 500px;
  margin: 0 auto 24px;
  font-size: 13px;
}
.credential-icon {
  width: 48px;
  height: 48px;
  fill: none;
  stroke: var(--purple);
  stroke-width: 1;
  margin-bottom: 22px;
}
.empty-state .actions {
  justify-content: center;
}
.empty-state h1 {
  font-size: 36px;
}
.lesson-video {
  width: 100%;
  aspect-ratio: 16/9;
  height: auto;
  border: 1px solid var(--line);
  border-radius: 12px;
  margin: 20px 0;
  background: #000;
}
.lesson-content {
  margin-top: 26px;
  min-height: 140px;
}
.lesson-navigation {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  margin-top: 28px;
  align-items: center;
}
.lesson-navigation button {
  margin: 0;
}
.resource-list {
  list-style: none;
  padding: 0;
  margin: 0;
}
.resource-list li,
.resource-row {
  display: flex;
  gap: 15px;
  justify-content: space-between;
  align-items: center;
  margin: 12px 0;
  font-size: 13px;
  overflow-wrap: anywhere;
}
.tabs {
  display: flex;
  gap: 25px;
  border-bottom: 1px solid var(--line);
  padding-bottom: 20px;
  margin: 30px 0;
  font-size: 12px;
  overflow: auto;
}
.tabs a {
  white-space: nowrap;
}
.compact-panel {
  margin: 12px 0;
}
.compact-panel h3 {
  font-size: 17px;
}
summary {
  cursor: pointer;
  font-weight: 550;
  list-style: none;
  display: flex;
  justify-content: space-between;
  gap: 15px;
  align-items: center;
  font-size: 14px;
}
summary:after {
  content: "+";
  color: var(--purple);
  margin-left: auto;
}
details[open] > summary:after {
  content: "−";
}
details[open] > summary {
  margin-bottom: 25px;
}
summary .muted {
  font-size: 11px;
  margin-left: 10px;
}
summary .tag {
  margin-left: auto;
}
summary small {
  font-size: 11px;
}
.preserve {
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}
.code-input {
  font:
    12px/1.8 ui-monospace,
    SFMono-Regular,
    Consolas,
    monospace;
}
.option {
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
}
.option:has(input:checked) {
  border-color: var(--purple);
  background: #b29aff0b;
}
fieldset {
  margin: 25px 0;
  min-width: 0;
}
legend {
  font-size: 16px;
  padding: 0 10px;
}
.certificate-panel {
  text-align: center;
  border: 1px solid #a58bd761;
  border-radius: 18px;
  padding: 55px 35px;
  background: radial-gradient(ellipse at top, #39265565, var(--panel) 70%);
}
.certificate-panel h1 {
  font-size: 38px;
}
.certificate-panel h2 {
  margin-top: 24px;
  color: var(--purple);
}
.certificate-panel dl {
  margin: 30px auto 0;
  max-width: 480px;
  font-size: 12px;
  display: grid;
  grid-template-columns: 110px 1fr;
  text-align: left;
  gap: 15px;
  border-top: 1px solid var(--line);
  padding-top: 25px;
}
.certificate-panel dt {
  color: var(--muted);
}
.certificate-panel dd {
  margin: 0;
}
.break {
  overflow-wrap: anywhere;
}
.skip-link {
  position: absolute;
  left: 12px;
  top: -100px;
  background: var(--purple);
  color: #16101f;
  padding: 12px;
  z-index: 50;
}
.skip-link:focus {
  top: 12px;
}
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
}
@media (min-width: 1600px) {
  .workspace-page {
    padding-top: 60px;
  }
  .sidebar {
    width: 250px;
  }
}
@media (max-width: 1100px) {
  .site-header {
    padding: 18px 25px;
  }
  .primary-nav {
    gap: 22px;
  }
  .hero {
    gap: 5px;
  }
  .hero-visual {
    transform: scale(0.9);
  }
  .feature-panel {
    gap: 40px;
    padding: 35px;
  }
  .workspace-page {
    padding: 32px;
  }
  .sidebar {
    width: 195px;
  }
  .side-link {
    font-size: 10px;
  }
  .learning-grid {
    gap: 15px;
  }
  .course-hero {
    gap: 30px;
  }
  .course-grid {
    gap: 16px;
  }
  .card-body {
    padding: 20px;
  }
  .card-body h3 {
    font-size: 19px;
  }
  .course-card .card-art {
    height: 170px;
  }
  .auth-layout {
    gap: 45px;
  }
  .site-footer {
    flex-wrap: wrap;
  }
  .learning-card .section-heading {
    flex-wrap: wrap;
  }
  .stats-grid {
    gap: 12px;
  }
  .stat {
    padding: 18px;
  }
  .workspace-page .panel {
    padding: 22px;
  }
}
@media (max-width: 850px) {
  .hero {
    grid-template-columns: 1fr;
    padding-top: 62px;
    padding-bottom: 55px;
    max-width: 720px;
  }
  .hero-copy {
    text-align: center;
  }
  .hero-description {
    margin-left: auto;
    margin-right: auto;
  }
  .hero .actions,
  .hero-meta {
    justify-content: center;
  }
  .hero-visual {
    display: none;
  }
  .hero h1 {
    font-size: 57px;
  }
  .path-strip {
    grid-template-columns: 1fr 1fr;
    gap: 26px;
  }
  .course-grid {
    grid-template-columns: 1fr;
    max-width: 640px;
    margin: auto;
  }
  .course-card {
    display: grid;
    grid-template-columns: 180px 1fr;
  }
  .course-card .card-art {
    height: 100%;
    min-height: 230px;
  }
  .card-body p {
    min-height: 0;
  }
  .feature-panel {
    grid-template-columns: 1fr;
    gap: 35px;
  }
  .course-hero {
    grid-template-columns: 1fr;
  }
  .course-hero .apply-panel {
    max-width: 600px;
  }
  .auth-story {
    display: none;
  }
  .auth-layout {
    grid-template-columns: 1fr;
    max-width: 540px;
  }
  .sidebar {
    width: 170px;
    padding: 25px 10px;
  }
  .sidebar-label {
    font-size: 7px;
  }
  .side-link {
    gap: 7px;
    padding: 11px 8px;
  }
  .workspace-page {
    padding: 25px;
  }
  .stats-grid {
    grid-template-columns: 1fr;
  }
  .stat {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 8px;
    align-items: center;
  }
  .stat > strong {
    grid-column: 2;
    grid-row: 1 / span 2;
    margin: 0;
    font-size: 30px;
  }
  .stat > small {
    margin: 0;
  }
  .stat progress {
    grid-column: 1;
  }
  .learning-grid {
    grid-template-columns: 1fr;
  }
  .workspace-page .section-heading {
    flex-wrap: wrap;
  }
  .workspace-page .section-heading h1 {
    font-size: 32px;
  }
  .cta-panel {
    flex-direction: column;
    align-items: start;
  }
  .site-footer > span {
    display: none;
  }
}
@media (max-width: 600px) {
  body {
    font-size: 14px;
  }
  .site-header {
    padding: 15px 20px;
    min-height: 72px;
  }
  .brand {
    font-size: 14px;
    gap: 9px;
  }
  .brand-mark {
    width: 34px;
    height: 34px;
    line-height: 32px;
    font-size: 21px;
    border-radius: 9px;
  }
  .brand-mark span {
    font-size: 18px;
  }
  .brand-divider {
    margin: 0 7px;
  }
  .brand-light {
    font-size: 9px;
  }
  .menu-toggle {
    display: block;
  }
  .primary-nav {
    display: none;
    position: absolute;
    left: 12px;
    right: 12px;
    top: 72px;
    border: 1px solid var(--line);
    background: #141722;
    border-radius: 12px;
    padding: 20px;
    box-shadow: var(--shadow);
    align-items: stretch;
  }
  .primary-nav.open {
    display: flex;
    flex-direction: column;
    gap: 18px;
  }
  .primary-nav > a:not(.button) {
    padding: 5px 8px;
  }
  .page {
    padding-left: 22px;
    padding-right: 22px;
  }
  .hero {
    padding-top: 50px;
    padding-bottom: 50px;
    min-height: 0;
  }
  .hero h1 {
    font-size: 43px;
  }
  .hero .eyebrow {
    font-size: 8px;
  }
  .hero-description {
    font-size: 14px;
  }
  .hero .actions {
    flex-direction: column;
    align-items: stretch;
  }
  .hero .actions .button {
    width: 100%;
  }
  .hero-meta {
    gap: 12px;
    font-size: 9px;
  }
  .path-strip {
    margin: 0 22px;
    padding: 25px 0;
    gap: 24px 10px;
  }
  .path-strip > div {
    padding-left: 24px;
  }
  .path-strip strong {
    font-size: 11px;
  }
  .path-strip p {
    font-size: 10px;
  }
  .section {
    margin: 42px 0;
  }
  .section-heading {
    display: block;
  }
  .section-heading > p {
    margin-top: 18px;
    max-width: 100%;
  }
  .section-heading h2 {
    font-size: 29px;
  }
  .course-card {
    display: block;
  }
  .course-card .card-art {
    height: 175px;
    min-height: 0;
  }
  .card-body {
    padding: 24px;
  }
  .card-body h3 {
    font-size: 23px;
  }
  .feature-panel {
    padding: 28px 24px;
  }
  .feature-panel h2 {
    font-size: 30px;
  }
  .feature-list {
    gap: 24px;
  }
  .feature-list > div {
    gap: 16px;
  }
  .cta-panel h2 {
    font-size: 28px;
  }
  .cta-panel .button {
    width: 100%;
  }
  .site-footer {
    padding: 28px 22px;
    gap: 20px;
    flex-direction: column;
    align-items: start;
  }
  .site-footer .brand {
    font-size: 13px;
  }
  .course-hero h1 {
    font-size: 38px;
  }
  .panel {
    padding: 22px;
  }
  .curriculum li {
    padding: 16px;
    gap: 12px;
    flex-wrap: wrap;
    font-size: 12px;
  }
  .curriculum li > a,
  .curriculum li > strong {
    flex-basis: calc(100% - 34px);
  }
  .curriculum .tag {
    margin-left: 32px;
    font-size: 8px;
  }
  .lesson-number {
    font-size: 10px;
  }
  .auth-layout {
    padding-top: 35px;
    padding-bottom: 35px;
  }
  .auth-form {
    padding: 25px;
  }
  .auth-form h2 {
    font-size: 28px;
  }
  .workspace {
    display: block;
  }
  .sidebar {
    width: 100%;
    border-right: 0;
    border-bottom: 1px solid var(--line);
    padding: 10px 15px;
    display: flex;
    flex-direction: row;
    overflow: auto;
    gap: 5px;
  }
  .sidebar-label,
  .sidebar-bottom,
  .sidebar .side-link:nth-of-type(2),
  .sidebar .side-link:nth-of-type(3) {
    display: none;
  }
  .side-link {
    white-space: nowrap;
    flex-shrink: 0;
    font-size: 10px;
    padding: 10px;
  }
  .side-link .icon {
    width: 15px;
    height: 15px;
  }
  .workspace-page {
    padding: 27px 20px;
  }
  .workspace-page > h1 {
    font-size: 32px;
  }
  .workspace-page .section-heading {
    display: flex;
  }
  .workspace-page .section-heading > div {
    width: 100%;
  }
  .workspace-page .section-heading h1 {
    font-size: 32px;
  }
  .workspace-page .panel {
    padding: 20px;
  }
  .workspace-page .section-heading h2 {
    font-size: 24px;
  }
  .workspace-page .lead {
    font-size: 14px;
  }
  .stats-grid {
    margin: 24px 0;
  }
  .learning-grid {
    gap: 16px;
  }
  .form-grid {
    grid-template-columns: 1fr;
    gap: 0;
  }
  .inline-form {
    flex-wrap: wrap;
  }
  .inline-form select {
    max-width: none;
  }
  .inline-form button {
    width: 100%;
  }
  .lesson-navigation {
    flex-direction: column;
    align-items: stretch;
  }
  .lesson-navigation .button {
    width: 100%;
  }
  .resource-row {
    flex-wrap: wrap;
  }
  .flash {
    margin: 20px;
    font-size: 12px;
    padding: 14px;
  }
  summary {
    font-size: 12px;
    align-items: start;
    flex-wrap: wrap;
  }
  summary .tag {
    margin: 0;
  }
  summary .muted {
    display: block;
    margin-left: 0;
    overflow-wrap: anywhere;
  }
  .tabs {
    gap: 20px;
  }
  .empty-state {
    padding: 35px 20px;
  }
  .empty-state h1 {
    font-size: 28px;
  }
  .certificate-panel {
    padding: 35px 20px;
  }
  .certificate-panel h1 {
    font-size: 29px;
  }
  .certificate-panel dl {
    grid-template-columns: 1fr;
    gap: 4px;
  }
  .certificate-panel dd {
    margin-bottom: 12px;
  }
}
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *,
  *:before,
  *:after {
    animation: none !important;
    transition: none !important;
  }
}