:root {
  color-scheme: light;
  --ink: #171426;
  --ink-soft: #5f5a70;
  --paper: #fbfafc;
  --paper-violet: #f3efff;
  --violet: #7550e8;
  --violet-dark: #5532c2;
  --cyan: #22bad2;
  --orange: #f59b45;
  --line: rgba(23, 20, 38, 0.12);
  --card: #ffffff;
  --dark: #1b1728;
  --radius: 28px;
  --shadow: 0 24px 70px rgba(50, 36, 91, 0.12);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 92px;
}

body {
  min-width: 320px;
  margin: 0;
  overflow-x: hidden;
  background: var(--paper);
  color: var(--ink);
  font-size: 16px;
  line-height: 1.55;
  text-rendering: optimizeLegibility;
}

a {
  color: inherit;
}

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

a:focus-visible,
summary:focus-visible {
  outline: 3px solid var(--orange);
  outline-offset: 4px;
}

.skip-link {
  position: fixed;
  top: 10px;
  left: 10px;
  z-index: 200;
  padding: 10px 14px;
  border-radius: 10px;
  background: var(--dark);
  color: #fff;
  font-weight: 800;
  transform: translateY(-150%);
  transition: transform 140ms ease;
}

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

.container {
  width: min(1180px, calc(100% - 40px));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  border-bottom: 1px solid rgba(23, 20, 38, 0.08);
  background: rgba(251, 250, 252, 0.86);
  backdrop-filter: blur(18px);
}

.header-inner {
  min-height: 76px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 2px;
  color: var(--ink);
  font-size: 1.25rem;
  font-weight: 850;
  letter-spacing: -0.04em;
  text-decoration: none;
  white-space: nowrap;
}

.brand-glyph {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  margin-right: 5px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--violet), var(--cyan));
  color: #fff;
  font-size: 1.15rem;
  font-weight: 900;
  box-shadow: 0 6px 18px rgba(117, 80, 232, 0.28);
}

.brand-name {
  background: linear-gradient(115deg, var(--violet-dark), var(--cyan));
  background-clip: text;
  color: transparent;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 30px;
}

.site-nav a {
  color: #3d384a;
  font-size: 0.88rem;
  font-weight: 750;
  text-decoration: none;
}

.site-nav a:hover {
  color: var(--violet-dark);
}

.button {
  min-height: 50px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 0 24px;
  border: 1px solid rgba(23, 20, 38, 0.08);
  border-radius: 999px;
  background: var(--dark);
  color: #fff;
  box-shadow: 0 12px 24px rgba(27, 23, 40, 0.16);
  font-size: 0.94rem;
  font-weight: 800;
  text-decoration: none;
  transition: transform 160ms ease, box-shadow 160ms ease, background 160ms ease;
}

.button:hover {
  transform: translateY(-2px);
  background: #2c2640;
  box-shadow: 0 16px 30px rgba(27, 23, 40, 0.22);
}

.button-small {
  min-height: 42px;
  padding: 0 18px;
  font-size: 0.84rem;
}

.hero {
  position: relative;
  min-height: 690px;
  display: grid;
  align-items: center;
  overflow: hidden;
  background:
    linear-gradient(115deg, rgba(117, 80, 232, 0.06), transparent 48%),
    linear-gradient(180deg, #fff 0%, #faf8ff 100%);
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image: radial-gradient(rgba(93, 72, 153, 0.16) 0.7px, transparent 0.7px);
  background-size: 21px 21px;
  mask-image: linear-gradient(to right, #000, transparent 47%);
}

.hero-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(2px);
  pointer-events: none;
}

.hero-orb-one {
  width: 350px;
  height: 350px;
  top: -170px;
  right: 4%;
  background: rgba(117, 80, 232, 0.18);
  filter: blur(70px);
}

.hero-orb-two {
  width: 260px;
  height: 260px;
  right: -80px;
  bottom: 20px;
  background: rgba(34, 186, 210, 0.16);
  filter: blur(60px);
}

.hero-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1.02fr) minmax(420px, 0.98fr);
  align-items: center;
  gap: clamp(46px, 7vw, 96px);
  padding-top: 72px;
  padding-bottom: 82px;
}

.eyebrow {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 18px;
  color: var(--violet-dark);
  font-size: 0.76rem;
  font-weight: 850;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.eyebrow > span {
  width: 30px;
  height: 2px;
  border-radius: 3px;
  background: linear-gradient(90deg, var(--violet), var(--cyan));
}

.hero h1 {
  max-width: 780px;
  margin: 0;
  font-size: clamp(3.35rem, 6vw, 5.65rem);
  line-height: 0.98;
  letter-spacing: -0.07em;
}

.hero h1 span {
  display: block;
  padding-bottom: 0.08em;
  background: linear-gradient(105deg, var(--violet-dark) 5%, var(--violet) 45%, #d66a4e 95%);
  background-clip: text;
  color: transparent;
}

.hero-lead {
  max-width: 600px;
  margin: 26px 0 0;
  color: var(--ink-soft);
  font-size: clamp(1.06rem, 1.6vw, 1.2rem);
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 24px;
  margin-top: 34px;
}

.text-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--ink);
  font-size: 0.94rem;
  font-weight: 800;
  text-underline-offset: 5px;
  text-decoration-color: rgba(23, 20, 38, 0.3);
}

.text-link:hover {
  color: var(--violet-dark);
  text-decoration-color: currentColor;
}

.hero-points {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  margin: 28px 0 0;
  padding: 0;
  list-style: none;
}

.hero-points li {
  color: #514b60;
  font-size: 0.84rem;
  font-weight: 700;
}

.hero-points span {
  color: var(--violet);
}

.learning-card {
  position: relative;
  padding: 26px;
  border: 1px solid rgba(117, 80, 232, 0.18);
  border-radius: 34px;
  background: rgba(255, 255, 255, 0.84);
  box-shadow: var(--shadow);
  backdrop-filter: blur(18px);
  transform: rotate(1.4deg);
}

.learning-card::before {
  content: "";
  position: absolute;
  z-index: -1;
  inset: 18px -20px -22px 26px;
  border-radius: 34px;
  background: linear-gradient(135deg, rgba(117, 80, 232, 0.15), rgba(34, 186, 210, 0.13));
  transform: rotate(-3deg);
}

.learning-card-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 20px;
  padding: 4px 3px 22px;
}

.learning-card-head p {
  margin: 0 0 3px;
  color: #7a738a;
  font-size: 0.74rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.learning-card-head strong {
  font-size: 1.1rem;
}

.live-badge {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 7px 10px;
  border-radius: 999px;
  background: #efeafe;
  color: var(--violet-dark);
  font-size: 0.7rem;
  font-weight: 850;
  white-space: nowrap;
}

.live-badge i {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--violet);
  box-shadow: 0 0 0 4px rgba(117, 80, 232, 0.13);
}

.lesson-list {
  display: grid;
  gap: 12px;
}

.lesson {
  min-height: 84px;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 16px;
  padding: 15px 16px;
  border: 1px solid rgba(23, 20, 38, 0.08);
  border-radius: 20px;
  background: rgba(250, 249, 252, 0.86);
}

.lesson-active {
  border-color: rgba(117, 80, 232, 0.3);
  background: linear-gradient(105deg, #f2edff, #fbfaff);
  box-shadow: 0 10px 24px rgba(117, 80, 232, 0.09);
}

.lesson-number {
  color: #928ba1;
  font-size: 0.73rem;
  font-weight: 850;
}

.lesson div {
  display: grid;
  gap: 2px;
}

.lesson strong {
  font-size: 0.94rem;
}

.lesson small {
  color: #7c758a;
  font-size: 0.76rem;
}

.lesson-check {
  display: grid;
  place-items: center;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: #e6f7f4;
  color: #168c78;
  font-size: 0.75rem;
  font-weight: 900;
}

.lesson-status {
  padding: 5px 8px;
  border-radius: 999px;
  background: var(--violet);
  color: #fff;
  font-size: 0.64rem;
  font-weight: 850;
}

.lesson-dot {
  width: 9px;
  height: 9px;
  margin: 0 7px;
  border: 2px solid #aaa4b6;
  border-radius: 50%;
}

.learning-footer {
  display: grid;
  gap: 3px;
  margin-top: 18px;
  padding: 18px 4px 2px;
  border-top: 1px solid rgba(23, 20, 38, 0.09);
}

.learning-footer span {
  color: #827b90;
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.11em;
  text-transform: uppercase;
}

.learning-footer strong {
  font-size: 0.96rem;
}

.proof-strip {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: #fff;
}

.proof-grid {
  min-height: 92px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  align-items: center;
}

.proof-grid p {
  min-height: 44px;
  display: flex;
  align-items: center;
  gap: 15px;
  margin: 0;
  padding: 0 24px;
  border-right: 1px solid var(--line);
  color: #514b60;
  font-size: 0.86rem;
  font-weight: 700;
}

.proof-grid p:first-child {
  padding-left: 0;
}

.proof-grid p:last-child {
  border: 0;
}

.proof-grid strong {
  color: var(--violet);
  font-size: 0.72rem;
}

.section {
  padding: 116px 0;
}

.section-heading {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(320px, 0.58fr);
  align-items: end;
  gap: 60px;
  margin-bottom: 48px;
}

.section-heading h2,
.method-intro h2,
.faq-intro h2,
.closing-copy h2 {
  margin: 0;
  font-size: clamp(2.35rem, 4.5vw, 4.25rem);
  line-height: 1.03;
  letter-spacing: -0.055em;
}

.section-heading > p,
.method-intro > p,
.faq-intro > p,
.closing-copy > p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 1rem;
  line-height: 1.72;
}

.course-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}

.course-card {
  position: relative;
  min-height: 600px;
  display: flex;
  flex-direction: column;
  padding: 30px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  box-shadow: 0 16px 50px rgba(48, 36, 78, 0.07);
}

.course-card::after {
  content: "";
  position: absolute;
  width: 150px;
  height: 150px;
  right: -58px;
  bottom: -74px;
  border-radius: 50%;
  background: currentColor;
  opacity: 0.08;
}

.course-card-violet {
  color: var(--violet-dark);
}

.course-card-cyan {
  color: #057b91;
}

.course-card-dark {
  border-color: #302b41;
  background: var(--dark);
  color: #fff;
  box-shadow: 0 22px 60px rgba(27, 23, 40, 0.2);
  transform: translateY(-10px);
}

.popular-label {
  position: absolute;
  top: 0;
  right: 25px;
  padding: 8px 13px;
  border-radius: 0 0 10px 10px;
  background: linear-gradient(100deg, var(--violet), #9a6bf3);
  color: #fff;
  font-size: 0.66rem;
  font-weight: 850;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.course-topline {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}

.course-icon {
  display: grid;
  place-items: center;
  width: 48px;
  height: 48px;
  border-radius: 15px;
  background: var(--violet-dark);
  color: #fff;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.95rem;
  font-weight: 900;
}

.course-card-cyan .course-icon {
  background: #057b91;
}

.course-card-dark .course-icon {
  background: linear-gradient(135deg, var(--violet), var(--cyan));
}

.level {
  padding: 6px 10px;
  border: 1px solid currentColor;
  border-radius: 999px;
  font-size: 0.68rem;
  font-weight: 850;
  opacity: 0.72;
}

.course-kicker {
  margin: 28px 0 7px;
  color: currentColor;
  font-size: 0.72rem;
  font-weight: 850;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.course-card h3 {
  margin: 0;
  color: var(--ink);
  font-size: 2rem;
  line-height: 1.1;
  letter-spacing: -0.04em;
}

.course-card-dark h3 {
  color: #fff;
}

.course-summary {
  min-height: 94px;
  margin: 15px 0 20px;
  color: var(--ink-soft);
  font-size: 0.9rem;
  line-height: 1.66;
}

.course-card-dark .course-summary {
  color: #c6c0d3;
}

.course-card ul {
  display: grid;
  gap: 11px;
  margin: 0;
  padding: 20px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  color: #4b4558;
  list-style: none;
}

.course-card-dark ul {
  border-color: rgba(255, 255, 255, 0.13);
  color: #e3dfeb;
}

.course-card li {
  position: relative;
  padding-left: 21px;
  font-size: 0.84rem;
}

.course-card li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: currentColor;
  font-weight: 900;
}

.course-meta {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-top: 20px;
}

.course-meta span {
  display: grid;
  gap: 3px;
  color: var(--ink);
  font-size: 0.76rem;
  font-weight: 780;
}

.course-card-dark .course-meta span {
  color: #fff;
}

.course-meta small {
  color: #8b8498;
  font-size: 0.62rem;
  font-weight: 780;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.course-card > a {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-top: auto;
  padding-top: 26px;
  color: currentColor;
  font-size: 0.88rem;
  font-weight: 850;
  text-decoration: none;
}

.course-card > a:hover {
  text-decoration: underline;
  text-underline-offset: 5px;
}

.course-card > a span {
  font-size: 1.15rem;
}

.course-note {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 18px;
  margin-top: 28px;
  padding: 20px 24px;
  border: 1px dashed rgba(117, 80, 232, 0.35);
  border-radius: 18px;
  background: rgba(243, 239, 255, 0.6);
}

.network-course-banner {
  display: grid;
  grid-template-columns: minmax(260px, 0.75fr) minmax(0, 1.25fr);
  min-height: 370px;
  margin-top: 28px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 24px;
  background: #fff;
  box-shadow: 0 16px 50px rgba(48, 36, 78, 0.07);
}

.network-course-visual {
  position: relative;
  min-height: 330px;
  overflow: hidden;
  background: var(--dark);
}

.network-course-visual::before {
  content: "";
  position: absolute;
  inset: 0;
  opacity: 0.14;
  background-image: linear-gradient(rgba(255,255,255,.45) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.45) 1px, transparent 1px);
  background-size: 32px 32px;
}

.network-course-visual strong {
  position: absolute;
  left: 50%;
  top: 50%;
  z-index: 2;
  display: grid;
  place-items: center;
  width: 120px;
  height: 70px;
  transform: translate(-50%, -50%);
  border: 1px solid rgba(255,255,255,.4);
  border-radius: 15px;
  background: #2b2344;
  color: #fff;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: .82rem;
  letter-spacing: .06em;
  box-shadow: 0 12px 35px rgba(0,0,0,.25);
}

.network-node {
  position: absolute;
  z-index: 2;
  width: 22px;
  height: 22px;
  border: 5px solid var(--dark);
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 0 2px var(--cyan);
}

.network-node-a { left: 16%; top: 23%; }
.network-node-b { right: 15%; top: 22%; background: #9c7cf4; box-shadow: 0 0 0 2px #9c7cf4; }
.network-node-c { right: 18%; bottom: 18%; }

.network-course-visual > i {
  position: absolute;
  z-index: 1;
  left: 20%;
  top: 28%;
  width: 45%;
  height: 2px;
  background: #776b95;
  transform: rotate(23deg);
  transform-origin: left;
}

.network-course-visual > i:nth-of-type(2) { left: 53%; top: 50%; width: 38%; transform: rotate(-34deg); }
.network-course-visual > i:nth-of-type(3) { left: 53%; top: 53%; width: 38%; transform: rotate(29deg); }

.network-course-copy {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: center;
  padding: clamp(34px, 5vw, 62px);
}

.network-course-copy h3 {
  margin: 0;
  color: var(--ink);
  font-size: clamp(2rem, 4vw, 3.2rem);
  line-height: 1.05;
  letter-spacing: -.05em;
}

.network-course-copy > p:not(.course-kicker) {
  max-width: 620px;
  margin: 18px 0 0;
  color: var(--ink-soft);
  font-size: .9rem;
  line-height: 1.7;
}

.network-course-copy ul {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 22px 0 26px;
  padding: 0;
  border: 0;
  list-style: none;
}

.network-course-copy li {
  padding: 6px 10px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--ink-soft);
  font-size: .7rem;
  font-weight: 750;
}

.network-course-copy li::before { content: none; }

.network-course-copy .button { color: #fff; }

.course-note > span {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: var(--violet);
  color: #fff;
  font-weight: 900;
}

.course-note p {
  margin: 0;
  color: #625b72;
  font-size: 0.86rem;
}

.course-note p strong {
  margin-right: 4px;
  color: var(--ink);
}

.course-note a {
  color: var(--violet-dark);
  font-size: 0.84rem;
  font-weight: 850;
  white-space: nowrap;
}

.method-section {
  position: relative;
  overflow: hidden;
  background: var(--dark);
  color: #fff;
}

.method-section::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 10% 10%, rgba(117, 80, 232, 0.24), transparent 32%),
    radial-gradient(circle at 90% 90%, rgba(34, 186, 210, 0.14), transparent 30%);
}

.method-grid {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 0.82fr) minmax(460px, 1.18fr);
  align-items: start;
  gap: 100px;
}

.eyebrow-light {
  color: #b9a9f4;
}

.method-intro h2 {
  color: #fff;
}

.method-intro > p {
  margin-top: 24px;
  color: #bbb5c7;
}

.button-light {
  margin-top: 30px;
  border-color: rgba(255, 255, 255, 0.2);
  background: #fff;
  color: var(--dark);
  box-shadow: none;
}

.button-light:hover {
  background: #f1edfa;
}

.method-steps {
  display: grid;
  gap: 0;
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: steps;
}

.method-steps li {
  display: grid;
  grid-template-columns: 48px 1fr;
  gap: 26px;
  padding: 28px 0 32px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.13);
}

.method-steps li:first-child {
  padding-top: 4px;
}

.method-steps > li > span {
  color: #9f8de4;
  font-size: 0.74rem;
  font-weight: 850;
}

.method-steps h3 {
  margin: -4px 0 7px;
  color: #fff;
  font-size: 1.55rem;
  letter-spacing: -0.03em;
}

.method-steps p {
  margin: 0;
  color: #bcb6c8;
  font-size: 0.93rem;
  line-height: 1.7;
}

.audience-section {
  background: #fff;
}

.audience-heading {
  margin-bottom: 38px;
}

.audience-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 24px;
  background: var(--line);
}

.audience-grid article {
  min-height: 260px;
  padding: 30px;
  background: #fff;
}

.audience-mark {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border: 1px solid var(--line);
  border-radius: 50%;
  background: #f9f7fd;
  color: var(--violet-dark);
  font-size: 0.82rem;
  font-weight: 900;
}

.audience-grid h3 {
  margin: 52px 0 10px;
  font-size: 1.4rem;
  letter-spacing: -0.035em;
}

.audience-grid p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 0.9rem;
  line-height: 1.7;
}

.formats-panel {
  display: grid;
  grid-template-columns: 1.1fr 1fr 1fr;
  align-items: center;
  gap: 28px;
  margin-top: 24px;
  padding: 30px;
  border-radius: 24px;
  background: var(--paper-violet);
}

.formats-kicker {
  margin: 0 0 5px;
  color: var(--violet-dark);
  font-size: 0.67rem;
  font-weight: 850;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.formats-panel h3 {
  margin: 0;
  font-size: 1.25rem;
  letter-spacing: -0.03em;
}

.format-item {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 13px;
  align-items: start;
}

.format-item > span {
  color: var(--violet);
  font-size: 1.5rem;
  line-height: 1;
}

.format-item p {
  display: grid;
  gap: 3px;
  margin: 0;
  color: var(--ink-soft);
  font-size: 0.8rem;
}

.format-item strong {
  color: var(--ink);
  font-size: 0.88rem;
}

.faq-section {
  background: #f7f5fa;
}

.faq-grid {
  display: grid;
  grid-template-columns: minmax(260px, 0.72fr) minmax(500px, 1.28fr);
  align-items: start;
  gap: 100px;
}

.faq-intro > p {
  margin-top: 20px;
}

.faq-intro .text-link {
  margin-top: 22px;
  color: var(--violet-dark);
}

.faq-list {
  border-top: 1px solid var(--line);
}

.faq-list details {
  border-bottom: 1px solid var(--line);
}

.faq-list summary {
  min-height: 84px;
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: 24px;
  color: var(--ink);
  cursor: pointer;
  font-size: 1rem;
  font-weight: 800;
  list-style: none;
}

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

.faq-list summary span {
  display: grid;
  place-items: center;
  width: 30px;
  height: 30px;
  border: 1px solid var(--line);
  border-radius: 50%;
  color: var(--violet-dark);
  font-size: 1.15rem;
  font-weight: 500;
  transition: transform 160ms ease;
}

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

.faq-list details p {
  max-width: 650px;
  margin: -4px 48px 26px 0;
  color: var(--ink-soft);
  font-size: 0.9rem;
  line-height: 1.72;
}

.closing-section {
  padding: 92px 0;
  background: #fff;
}

.closing-card {
  min-height: 420px;
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  align-items: center;
  gap: 60px;
  overflow: hidden;
  padding: clamp(34px, 5vw, 66px);
  border-radius: 34px;
  background:
    radial-gradient(circle at 2% 10%, rgba(117, 80, 232, 0.23), transparent 35%),
    linear-gradient(125deg, #231c36, #15121f 72%);
  color: #fff;
}

.closing-art {
  position: relative;
  min-height: 260px;
}

.closing-ring {
  position: absolute;
  width: 250px;
  height: 250px;
  top: 50%;
  left: 50%;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 50%;
  transform: translate(-50%, -50%);
}

.closing-ring::before,
.closing-ring::after {
  content: "";
  position: absolute;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 50%;
}

.closing-ring::before {
  inset: 26px;
}

.closing-ring::after {
  inset: 58px;
}

.closing-spark {
  position: absolute;
  top: 10%;
  left: 12%;
  color: var(--cyan);
  font-size: 2rem;
}

.closing-code {
  position: absolute;
  top: 50%;
  left: 50%;
  display: grid;
  place-items: center;
  width: 94px;
  height: 94px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 26px;
  background: linear-gradient(135deg, var(--violet), #5241c9 52%, var(--cyan));
  box-shadow: 0 20px 44px rgba(0, 0, 0, 0.3);
  color: #fff;
  font-size: 1.8rem;
  font-weight: 900;
  letter-spacing: -0.06em;
  transform: translate(-50%, -50%) rotate(-7deg);
}

.closing-copy h2 {
  color: #fff;
}

.closing-copy > p {
  margin-top: 22px;
  color: #bbb5c6;
}

.closing-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 24px;
  margin-top: 30px;
}

.closing-actions .button {
  margin: 0;
}

.closing-actions > a:last-child {
  color: #d9d3e2;
  font-size: 0.9rem;
  font-weight: 800;
  text-underline-offset: 5px;
}

.site-footer {
  padding: 36px 0;
  border-top: 1px solid var(--line);
  background: #fff;
}

.footer-grid {
  display: grid;
  grid-template-columns: auto 1fr auto auto;
  align-items: center;
  gap: 28px;
}

.brand-footer {
  font-size: 1.05rem;
}

.brand-footer .brand-glyph {
  width: 30px;
  height: 30px;
  font-size: 1rem;
}

.site-footer p,
.site-footer small {
  margin: 0;
  color: #777082;
  font-size: 0.76rem;
}

.footer-links {
  display: flex;
  gap: 18px;
}

.footer-links a {
  color: #4f495d;
  font-size: 0.76rem;
  font-weight: 750;
  text-decoration: none;
}

.footer-links a:hover {
  color: var(--violet-dark);
  text-decoration: underline;
}

@media (max-width: 1020px) {
  .site-nav {
    display: none;
  }

  .hero-grid {
    grid-template-columns: 1fr 390px;
    gap: 38px;
  }

  .hero h1 {
    font-size: clamp(3rem, 6vw, 4.6rem);
  }

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

  .course-card-dark {
    transform: none;
  }

  .course-card-cyan {
    grid-column: 1 / -1;
    min-height: 540px;
  }

  .method-grid,
  .faq-grid {
    gap: 60px;
  }

  .formats-panel {
    grid-template-columns: 1fr 1fr;
  }

  .formats-panel > div:first-child {
    grid-column: 1 / -1;
  }

  .footer-grid {
    grid-template-columns: auto 1fr auto;
  }

  .site-footer small {
    grid-column: 3;
  }
}

@media (max-width: 780px) {
  html {
    scroll-padding-top: 76px;
  }

  .container {
    width: min(100% - 28px, 680px);
  }

  .header-inner {
    min-height: 66px;
  }

  .header-inner .button {
    display: none;
  }

  .hero {
    min-height: auto;
  }

  .hero-grid {
    grid-template-columns: 1fr;
    gap: 54px;
    padding-top: 64px;
    padding-bottom: 74px;
  }

  .hero h1 {
    font-size: clamp(2.9rem, 13vw, 4.5rem);
  }

  .learning-card {
    width: calc(100% - 8px);
    margin: 0 auto;
    padding: 20px;
    transform: rotate(0.5deg);
  }

  .proof-grid {
    grid-template-columns: 1fr;
    padding: 12px 0;
  }

  .proof-grid p,
  .proof-grid p:first-child {
    min-height: 48px;
    padding: 0;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .proof-grid p:last-child {
    border-bottom: 0;
  }

  .section {
    padding: 82px 0;
  }

  .section-heading,
  .method-grid,
  .faq-grid,
  .closing-card {
    grid-template-columns: 1fr;
  }

  .section-heading {
    align-items: start;
    gap: 22px;
  }

  .section-heading h2,
  .method-intro h2,
  .faq-intro h2,
  .closing-copy h2 {
    font-size: clamp(2.35rem, 10vw, 3.6rem);
  }

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

  .network-course-banner { grid-template-columns: 1fr; }
  .network-course-visual { min-height: 280px; }

  .course-card,
  .course-card-cyan {
    min-height: 0;
    grid-column: auto;
  }

  .course-summary {
    min-height: 0;
  }

  .course-note {
    grid-template-columns: auto 1fr;
  }

  .course-note a {
    grid-column: 2;
  }

  .method-grid {
    gap: 64px;
  }

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

  .audience-grid article {
    min-height: 230px;
  }

  .formats-panel {
    grid-template-columns: 1fr;
  }

  .formats-panel > div:first-child {
    grid-column: auto;
  }

  .faq-grid {
    gap: 48px;
  }

  .closing-card {
    gap: 18px;
  }

  .closing-art {
    min-height: 230px;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    justify-items: start;
  }

  .site-footer small {
    grid-column: auto;
  }
}

@media (max-width: 480px) {
  .brand {
    font-size: 1.08rem;
  }

  .hero-actions,
  .closing-actions {
    align-items: flex-start;
    flex-direction: column;
  }

  .button {
    width: 100%;
  }

  .hero-points {
    display: grid;
    gap: 8px;
  }

  .learning-card-head {
    display: grid;
  }

  .live-badge {
    width: fit-content;
  }

  .lesson {
    grid-template-columns: 24px 1fr;
  }

  .lesson > :last-child {
    display: none;
  }

  .course-card {
    padding: 24px;
  }

  .course-note {
    grid-template-columns: 1fr;
  }

  .course-note a {
    grid-column: auto;
  }

  .method-steps li {
    grid-template-columns: 36px 1fr;
    gap: 16px;
  }

  .formats-panel {
    padding: 24px;
  }

  .faq-list summary {
    font-size: 0.92rem;
  }

  .closing-card {
    width: calc(100% - 20px);
    padding: 28px 22px 38px;
  }

  .closing-ring {
    width: 210px;
    height: 210px;
  }

  .footer-links {
    align-items: flex-start;
    flex-direction: column;
    gap: 8px;
  }
}

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

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