:root {
  --bg: #07111f;
  --bg-soft: #0e1b31;
  --panel: rgba(14, 27, 49, 0.86);
  --panel-strong: rgba(8, 17, 30, 0.94);
  --line: rgba(230, 240, 255, 0.12);
  --text: #edf4ff;
  --muted: #9cb0cc;
  --mint: #57e1bc;
  --amber: #ffbe62;
  --blue: #7ab6ff;
  --rose: #ff8d7a;
  --shadow: 0 18px 60px rgba(0, 0, 0, 0.34);
  --radius: 24px;
  --sans: "Segoe UI", "Trebuchet MS", Arial, sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--sans);
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(87, 225, 188, 0.14), transparent 26%),
    radial-gradient(circle at 85% 10%, rgba(122, 182, 255, 0.12), transparent 20%),
    radial-gradient(circle at 80% 90%, rgba(255, 190, 98, 0.14), transparent 22%),
    linear-gradient(160deg, #05101b, #091426 35%, #0c1c31 70%, #08131f);
}

a {
  color: inherit;
}

.wrap {
  max-width: 1220px;
  margin: 0 auto;
  padding: 24px 20px 96px;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 14px 18px;
  position: sticky;
  top: 10px;
  z-index: 20;
  margin-bottom: 22px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(6, 13, 24, 0.82);
  backdrop-filter: blur(18px);
  box-shadow: var(--shadow);
}

.brand {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.brand__eyebrow {
  color: var(--mint);
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  font-weight: 800;
}

.brand__title {
  font-size: 0.98rem;
  font-weight: 800;
}

.nav {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.nav a {
  text-decoration: none;
  padding: 9px 12px;
  border-radius: 999px;
  color: var(--muted);
  border: 1px solid transparent;
}

.nav a:hover,
.nav a.is-active {
  color: var(--text);
  border-color: var(--line);
  background: rgba(255, 255, 255, 0.04);
}

.hero {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 24px;
  align-items: stretch;
  margin-top: 10px;
}

.hero--single {
  grid-template-columns: 1fr;
}

.hero__main,
.hero__side,
.panel,
.card,
.timeline__card,
.resource,
.setupCard,
.step,
.ctaBand,
.docShell,
.docAside,
.docSection {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
  box-shadow: var(--shadow);
}

.hero__main,
.docShell {
  padding: 34px;
  background:
    linear-gradient(155deg, rgba(87, 225, 188, 0.08), transparent 30%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.03), rgba(255, 255, 255, 0.01)),
    var(--panel-strong);
}

.hero__side,
.docAside {
  padding: 28px;
  display: grid;
  gap: 16px;
  align-content: start;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border-radius: 999px;
  background: rgba(87, 225, 188, 0.08);
  color: var(--mint);
  font-size: 0.82rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  font-weight: 800;
}

h1 {
  margin: 16px 0;
  font-size: clamp(2.6rem, 5vw, 5.5rem);
  line-height: 0.95;
  letter-spacing: -0.05em;
  max-width: 900px;
}

.hero h1,
.docHero h1 {
  max-width: 920px;
}

.lede,
.docIntro {
  max-width: 800px;
  font-size: 1.08rem;
  line-height: 1.8;
  color: var(--muted);
}

.formula {
  display: inline-flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 18px;
}

.formula span {
  padding: 10px 12px;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.045);
  border: 1px solid var(--line);
  font-weight: 700;
  color: #d7e7ff;
}

.cta,
.miniLinks,
.footLinks {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.cta {
  margin-top: 26px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 18px;
  border-radius: 999px;
  text-decoration: none;
  font-weight: 800;
  border: 1px solid var(--line);
}

.btn--primary {
  color: #052018;
  background: linear-gradient(135deg, var(--mint), #8ff3d7);
  border-color: transparent;
}

.btn--secondary {
  background: rgba(255, 255, 255, 0.04);
}

.stat {
  padding: 16px 18px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.03);
}

.stat__value {
  display: block;
  font-size: 1.9rem;
  font-weight: 800;
  letter-spacing: -0.05em;
}

.stat__label {
  color: var(--muted);
  line-height: 1.6;
}

.section {
  margin-top: 26px;
}

.section__head {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 14px;
}

.section__head h2,
.docSection h2 {
  margin: 0;
  font-size: clamp(1.7rem, 3vw, 2.5rem);
  letter-spacing: -0.04em;
}

.section__head p {
  margin: 0;
  max-width: 680px;
  color: var(--muted);
  line-height: 1.7;
}

.grid {
  display: grid;
  gap: 16px;
}

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

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

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

.card,
.resource,
.setupCard,
.step,
.docSection {
  padding: 22px;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.025), rgba(255, 255, 255, 0.015)),
    var(--panel);
}

.card h3,
.timeline__card h3,
.resource h3,
.setupCard h3,
.step h3,
.docSection h3 {
  margin: 0 0 10px;
  font-size: 1.06rem;
  letter-spacing: -0.02em;
}

.card p,
.card li,
.timeline__card p,
.timeline__card li,
.resource p,
.resource li,
.setupCard p,
.setupCard li,
.step p,
.step li,
.docShell p,
.docShell li,
.docAside p,
.docAside li,
.docSection p,
.docSection li {
  color: var(--muted);
  line-height: 1.7;
}

.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 14px;
}

.chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 10px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--line);
  color: #dce9ff;
  font-size: 0.92rem;
  font-weight: 700;
}

.timeline {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 14px;
}

.timeline__card {
  padding: 20px;
  background: linear-gradient(180deg, rgba(87, 225, 188, 0.03), rgba(255, 255, 255, 0.02));
}

.timeline__week {
  display: inline-block;
  margin-bottom: 8px;
  padding: 6px 9px;
  border-radius: 999px;
  background: rgba(87, 225, 188, 0.08);
  color: var(--mint);
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-weight: 800;
}

.setupGrid,
.resourceGrid,
.stepGrid {
  display: grid;
  gap: 16px;
}

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

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

.linkList {
  display: grid;
  gap: 10px;
  margin-top: 12px;
}

.linkList a,
.miniLinks a,
.footLinks a {
  text-decoration: none;
  padding: 10px 12px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.03);
  color: #dfecff;
  font-weight: 700;
}

.codeblock {
  margin: 14px 0 0;
  padding: 16px 18px;
  border-radius: 18px;
  border: 1px solid var(--line);
  background: rgba(4, 10, 20, 0.92);
  color: #d7fff0;
  font-family: Consolas, "Courier New", monospace;
  font-size: 0.95rem;
  line-height: 1.7;
  overflow-x: auto;
  white-space: pre-wrap;
}

.lessonGrid,
.taskGrid {
  display: grid;
  gap: 16px;
}

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

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

.callout {
  margin-top: 16px;
  padding: 16px 18px;
  border-radius: 18px;
  border: 1px solid var(--line);
  background: rgba(122, 182, 255, 0.08);
}

.callout strong {
  display: block;
  margin-bottom: 8px;
}

.checklist {
  display: grid;
  gap: 10px;
  margin-top: 14px;
}

.checkitem {
  padding: 14px 16px;
  border-radius: 16px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.03);
}

.checkitem strong {
  display: block;
  margin-bottom: 6px;
}

.linkList a {
  border-radius: 14px;
  padding: 12px 14px;
}

.linkList a:hover,
.miniLinks a:hover,
.footLinks a:hover {
  background: rgba(255, 255, 255, 0.06);
}

.docLayout {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 24px;
}

.docHero {
  margin-bottom: 18px;
}

.docSection + .docSection {
  margin-top: 16px;
}

.docList {
  display: grid;
  gap: 12px;
  margin-top: 14px;
}

.docListItem {
  padding: 14px 16px;
  border-radius: 16px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.03);
}

.docListItem strong {
  display: block;
  color: var(--text);
  margin-bottom: 6px;
}

.docKicker {
  display: inline-block;
  margin-bottom: 10px;
  padding: 7px 10px;
  border-radius: 999px;
  background: rgba(122, 182, 255, 0.08);
  color: var(--blue);
  font-size: 0.8rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.12em;
}

.docAsideTitle {
  margin: 0 0 10px;
  font-size: 1.1rem;
}

.ctaBand {
  margin-top: 30px;
  padding: 26px;
  background:
    radial-gradient(circle at 20% 20%, rgba(87, 225, 188, 0.1), transparent 24%),
    linear-gradient(135deg, rgba(255, 190, 98, 0.07), rgba(122, 182, 255, 0.05)),
    var(--panel-strong);
}

.ctaBand h2 {
  margin: 0 0 12px;
  font-size: clamp(1.8rem, 3vw, 2.6rem);
  letter-spacing: -0.04em;
}

.ctaBand p {
  margin: 0;
  max-width: 760px;
  color: var(--muted);
  line-height: 1.8;
}

.foot {
  margin-top: 18px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  color: var(--muted);
}

code {
  font-family: Consolas, "Courier New", monospace;
  font-size: 0.94em;
  color: #c4f8eb;
}

ul {
  margin: 0;
  padding-left: 18px;
}

@media (max-width: 1120px) {
  .hero,
  .timeline,
  .setupGrid,
  .resourceGrid,
  .stepGrid,
  .grid--3,
  .grid--4,
  .docLayout {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 760px) {
  .topbar {
    border-radius: 24px;
    position: static;
  }

  .hero,
  .timeline,
  .setupGrid,
  .resourceGrid,
  .stepGrid,
  .grid--2,
  .grid--3,
  .grid--4,
  .docLayout {
    grid-template-columns: 1fr;
  }

  .hero__main,
  .hero__side,
  .panel,
  .card,
  .timeline__card,
  .resource,
  .setupCard,
  .step,
  .ctaBand,
  .docShell,
  .docAside,
  .docSection {
    padding: 20px;
  }

  h1 {
    font-size: 2.5rem;
  }
}