:root {
  color-scheme: dark;
  --ink-950: #030611;
  --ink-900: #050817;
  --ink-850: #08152b;
  --ink-800: #0d2140;
  --paper: #f4f7ff;
  --muted: #aebbd2;
  --cyan: #2fe8ff;
  --violet: #8466ff;
  --lime: #b9f33d;
  --line: rgba(255, 255, 255, 0.12);
  --glass: rgba(8, 21, 43, 0.72);
  --glass-strong: rgba(13, 33, 64, 0.88);
  --shadow: 0 26px 80px rgba(0, 0, 0, 0.32);
  --radius-sm: 14px;
  --radius-md: 22px;
  --radius-lg: 32px;
  --container: 1360px;
  --pointer-x: 50%;
  --pointer-y: 25%;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  background: var(--ink-950);
}

body {
  min-width: 320px;
  margin: 0;
  overflow-x: hidden;
  color: var(--paper);
  background:
    radial-gradient(circle at var(--pointer-x) var(--pointer-y), rgba(47, 232, 255, 0.09), transparent 22rem),
    radial-gradient(circle at 76% 12%, rgba(185, 243, 61, 0.08), transparent 26rem),
    radial-gradient(circle at 42% 5%, rgba(132, 102, 255, 0.16), transparent 32rem),
    var(--ink-950);
  font-family: "Avenir Next", "Segoe UI", Arial, Helvetica, sans-serif;
  line-height: 1.6;
  text-rendering: optimizelegibility;
}

body::before {
  position: fixed;
  z-index: -2;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.025) 1px, transparent 1px);
  background-size: 48px 48px;
  content: "";
  mask-image: linear-gradient(to bottom, black, transparent 78%);
  pointer-events: none;
}

body::after {
  position: fixed;
  z-index: -1;
  width: 70vw;
  height: 42vw;
  min-width: 760px;
  min-height: 460px;
  top: -26vw;
  left: 18vw;
  border-radius: 50%;
  background:
    conic-gradient(
      from 40deg,
      rgba(47, 232, 255, 0.1),
      rgba(132, 102, 255, 0.26),
      rgba(185, 243, 61, 0.12),
      rgba(47, 232, 255, 0.1)
    );
  filter: blur(60px);
  content: "";
  opacity: 0.75;
  pointer-events: none;
  transform: rotate(-8deg);
  animation: aurora-drift 18s ease-in-out infinite alternate;
}

img {
  display: block;
  max-width: 100%;
}

a {
  color: inherit;
}

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

button {
  font: inherit;
}

:focus-visible {
  outline: 3px solid var(--lime);
  outline-offset: 4px;
}

.skip-link {
  position: fixed;
  z-index: 100;
  top: 12px;
  left: 12px;
  padding: 10px 16px;
  border-radius: 999px;
  color: var(--ink-950);
  background: var(--lime);
  font-weight: 800;
  transform: translateY(-160%);
  transition: transform 180ms ease;
}

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

.site-shell {
  width: min(calc(100% - 64px), var(--container));
  margin-inline: auto;
}

.site-header {
  position: relative;
  z-index: 20;
  border-bottom: 1px solid var(--line);
}

.site-header-inner {
  min-height: 88px;
  display: grid;
  grid-template-columns: minmax(180px, 0.8fr) auto minmax(220px, 0.8fr);
  align-items: center;
  gap: 28px;
}

.brand {
  width: 184px;
  display: inline-flex;
  align-items: center;
  text-decoration: none;
}

.brand img {
  width: 184px;
  height: auto;
  filter: drop-shadow(0 10px 24px rgba(132, 102, 255, 0.34));
}

.main-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: clamp(22px, 3vw, 46px);
}

.main-nav a {
  position: relative;
  color: var(--paper);
  font-size: 0.95rem;
  font-weight: 700;
  text-decoration: none;
  white-space: nowrap;
}

.main-nav a::after {
  position: absolute;
  right: 0;
  bottom: -9px;
  left: 0;
  height: 2px;
  border-radius: 99px;
  background: linear-gradient(90deg, var(--cyan), var(--violet));
  content: "";
  transform: scaleX(0);
  transition: transform 180ms ease;
}

.main-nav a:hover::after,
.main-nav a:focus-visible::after {
  transform: scaleX(1);
}

.header-actions {
  display: flex;
  justify-content: flex-end;
}

.menu-button {
  display: none;
  width: 48px;
  height: 48px;
  border: 1px solid var(--line);
  border-radius: 14px;
  color: var(--paper);
  background: var(--glass);
  cursor: pointer;
}

.menu-lines,
.menu-lines::before,
.menu-lines::after {
  display: block;
  width: 21px;
  height: 2px;
  margin-inline: auto;
  border-radius: 2px;
  background: currentcolor;
  content: "";
}

.menu-lines::before {
  transform: translateY(-7px);
}

.menu-lines::after {
  transform: translateY(5px);
}

.button {
  min-height: 52px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 12px 22px;
  border: 1px solid rgba(47, 232, 255, 0.65);
  border-radius: 999px;
  color: var(--paper);
  background: rgba(8, 21, 43, 0.72);
  box-shadow:
    inset 0 0 0 1px rgba(255, 255, 255, 0.06),
    0 0 28px rgba(47, 232, 255, 0.15);
  font-weight: 800;
  text-decoration: none;
  transition:
    transform 180ms ease,
    border-color 180ms ease,
    box-shadow 180ms ease;
}

.button:hover {
  transform: translateY(-2px);
  border-color: var(--cyan);
  box-shadow:
    inset 0 0 0 1px rgba(255, 255, 255, 0.12),
    0 0 34px rgba(47, 232, 255, 0.24);
}

.button-primary {
  border-color: transparent;
  color: #06101f;
  background: linear-gradient(100deg, var(--cyan), #64c6ff 48%, var(--violet));
  box-shadow: 0 14px 38px rgba(47, 232, 255, 0.22);
}

.button-secondary {
  border-color: var(--line);
}

.button-small {
  min-height: 46px;
  padding-inline: 18px;
  font-size: 0.9rem;
}

.arrow {
  font-size: 1.25em;
  line-height: 1;
}

.hero {
  position: relative;
  padding: clamp(62px, 7vw, 104px) 0 38px;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 5fr) minmax(560px, 7fr);
  align-items: center;
  gap: clamp(42px, 5vw, 80px);
}

.eyebrow {
  width: fit-content;
  display: inline-flex;
  align-items: center;
  gap: 9px;
  margin: 0 0 25px;
  padding: 8px 14px;
  border: 1px solid rgba(47, 232, 255, 0.7);
  border-radius: 999px;
  color: var(--cyan);
  background: rgba(5, 8, 23, 0.6);
  font-size: 0.82rem;
  font-weight: 800;
  letter-spacing: 0.02em;
}

.eyebrow::before {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 18px var(--cyan);
  content: "";
}

.hero h1,
.article-hero h1 {
  margin: 0;
  max-width: 820px;
  font-size: clamp(3.25rem, 6.3vw, 6.1rem);
  font-weight: 850;
  letter-spacing: -0.055em;
  line-height: 0.98;
  text-wrap: balance;
}

.hero h1 span {
  color: transparent;
  background: linear-gradient(95deg, var(--paper) 12%, var(--cyan) 52%, var(--paper) 84%);
  background-clip: text;
}

.hero-lead {
  max-width: 650px;
  margin: 26px 0 0;
  color: var(--muted);
  font-size: clamp(1.05rem, 1.5vw, 1.26rem);
  line-height: 1.55;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 32px;
}

.hero-visual {
  position: relative;
  min-height: 510px;
  border: 1px solid rgba(174, 187, 210, 0.5);
  border-radius: var(--radius-lg);
  background:
    radial-gradient(circle at var(--card-x, 70%) var(--card-y, 25%), rgba(47, 232, 255, 0.17), transparent 16rem),
    linear-gradient(145deg, rgba(13, 33, 64, 0.78), rgba(3, 6, 17, 0.82));
  box-shadow: var(--shadow);
  overflow: hidden;
  isolation: isolate;
  perspective: 1100px;
  transform-style: preserve-3d;
}

.hero-visual::before {
  position: absolute;
  z-index: -1;
  width: 500px;
  height: 500px;
  top: -250px;
  right: -100px;
  border-radius: 50%;
  background: conic-gradient(from 40deg, var(--cyan), var(--violet), var(--lime), var(--cyan));
  filter: blur(74px);
  content: "";
  opacity: 0.25;
}

.feature-copy {
  position: absolute;
  z-index: 3;
  width: 56%;
  top: 44px;
  left: 42px;
}

.feature-label {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 18px;
  color: var(--lime);
  font-size: 0.74rem;
  font-weight: 900;
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

.feature-label::before {
  width: 28px;
  height: 1px;
  background: currentcolor;
  content: "";
}

.feature-copy h2 {
  max-width: 500px;
  margin: 0;
  font-size: clamp(2rem, 3.2vw, 3.25rem);
  line-height: 1.08;
  letter-spacing: -0.035em;
  text-wrap: balance;
}

.feature-link {
  width: 54px;
  height: 54px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-top: 24px;
  border: 1px solid var(--lime);
  border-radius: 50%;
  color: var(--paper);
  text-decoration: none;
  transition:
    color 180ms ease,
    background 180ms ease,
    transform 180ms ease;
}

.feature-link:hover {
  color: var(--ink-950);
  background: var(--lime);
  transform: translateX(4px);
}

.worksheet {
  position: absolute;
  z-index: 1;
  width: 340px;
  height: 300px;
  right: 32px;
  bottom: 28px;
  padding: 28px 24px;
  border: 1px solid rgba(255, 255, 255, 0.4);
  border-radius: 24px;
  color: #10213a;
  background:
    repeating-linear-gradient(
      to bottom,
      transparent 0,
      transparent 30px,
      rgba(20, 70, 120, 0.14) 31px,
      rgba(20, 70, 120, 0.14) 32px
    ),
    linear-gradient(145deg, #dceaff, #a9c8e8);
  box-shadow: 0 30px 60px rgba(0, 0, 0, 0.38);
  transform: rotate(-4deg) translateZ(16px);
}

.worksheet-kicker {
  font-size: 0.7rem;
  font-weight: 900;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.worksheet-title {
  margin: 4px 0 22px;
  font-size: 1.25rem;
  font-weight: 900;
}

.worksheet-row {
  display: flex;
  align-items: center;
  gap: 10px;
  height: 31px;
  font-size: 0.8rem;
  font-weight: 700;
}

.worksheet-number {
  width: 18px;
  color: #49688b;
}

.word-card {
  position: absolute;
  z-index: 4;
  min-width: 164px;
  padding: 20px 26px;
  border: 1px solid rgba(255, 255, 255, 0.5);
  border-radius: 17px;
  color: var(--paper);
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.16), rgba(255, 255, 255, 0.04)),
    rgba(7, 17, 40, 0.9);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.25),
    0 20px 44px rgba(0, 0, 0, 0.36);
  font-size: 1.45rem;
  font-weight: 850;
  letter-spacing: -0.03em;
  text-align: center;
  transform-style: preserve-3d;
  transition:
    transform 220ms ease,
    box-shadow 220ms ease;
}

.word-card span {
  display: block;
  transform: translateZ(24px);
}

.word-card-cyan {
  top: 58px;
  right: 50px;
  color: var(--cyan);
  transform: rotate(9deg) rotateX(10deg) translateZ(54px);
}

.word-card-violet {
  top: 142px;
  right: 6px;
  color: #d6c8ff;
  transform: rotate(-6deg) rotateY(-14deg) translateZ(72px);
}

.word-card-lime {
  top: 238px;
  right: 56px;
  color: var(--lime);
  transform: rotate(6deg) rotateX(-8deg) translateZ(82px);
}

.hero-visual:hover .word-card-cyan {
  transform: rotate(5deg) rotateX(13deg) translate3d(-6px, -7px, 68px);
}

.hero-visual:hover .word-card-violet {
  transform: rotate(-3deg) rotateY(-10deg) translate3d(-10px, 4px, 88px);
}

.hero-visual:hover .word-card-lime {
  transform: rotate(3deg) rotateX(-4deg) translate3d(8px, 8px, 98px);
}

.topic-strip {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
  padding: 28px 0 88px;
}

.topic-link {
  min-height: 94px;
  display: flex;
  align-items: center;
  gap: 18px;
  padding: 20px 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: linear-gradient(145deg, rgba(13, 33, 64, 0.8), rgba(8, 21, 43, 0.54));
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.05);
  font-size: 1.15rem;
  font-weight: 800;
  text-decoration: none;
  transition:
    transform 180ms ease,
    border-color 180ms ease;
}

.topic-link:hover {
  border-color: rgba(47, 232, 255, 0.5);
  transform: translateY(-4px);
}

.topic-icon {
  width: 48px;
  height: 48px;
  display: grid;
  flex: 0 0 auto;
  place-items: center;
  border: 1px solid currentcolor;
  border-radius: 50%;
  color: var(--cyan);
  box-shadow: 0 0 24px rgba(47, 232, 255, 0.16);
}

.topic-link:nth-child(2) .topic-icon {
  color: #b79fff;
}

.topic-link:nth-child(3) .topic-icon {
  color: var(--lime);
}

.topic-arrow {
  margin-left: auto;
  font-size: 1.35rem;
}

.section {
  padding: 96px 0;
}

.section-contained {
  border-block: 1px solid var(--line);
  background: rgba(5, 8, 23, 0.58);
}

.section-heading {
  display: grid;
  grid-template-columns: minmax(0, 0.75fr) minmax(320px, 0.45fr);
  align-items: end;
  gap: 40px;
  margin-bottom: 42px;
}

.section-kicker {
  margin: 0 0 10px;
  color: var(--cyan);
  font-size: 0.78rem;
  font-weight: 900;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.section-heading h2 {
  margin: 0;
  font-size: clamp(2.35rem, 4vw, 4.4rem);
  line-height: 1.02;
  letter-spacing: -0.045em;
  text-wrap: balance;
}

.section-heading > p:last-child {
  margin: 0 0 4px;
  color: var(--muted);
  font-size: 1.04rem;
}

.article-grid {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: 24px;
}

.article-card {
  position: relative;
  grid-column: span 4;
  min-height: 480px;
  display: flex;
  flex-direction: column;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: linear-gradient(150deg, rgba(13, 33, 64, 0.78), rgba(5, 8, 23, 0.92));
  box-shadow: 0 18px 48px rgba(0, 0, 0, 0.24);
  overflow: hidden;
  transition:
    transform 220ms ease,
    border-color 220ms ease,
    box-shadow 220ms ease;
}

.article-card:hover {
  border-color: rgba(47, 232, 255, 0.42);
  box-shadow: 0 24px 66px rgba(0, 0, 0, 0.34);
  transform: translateY(-6px);
}

.article-card-wide {
  grid-column: span 8;
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
}

.article-visual {
  min-height: 215px;
  display: grid;
  place-items: center;
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(circle at 35% 30%, rgba(47, 232, 255, 0.24), transparent 34%),
    radial-gradient(circle at 70% 66%, rgba(132, 102, 255, 0.26), transparent 32%),
    #071326;
  overflow: hidden;
}

.article-visual-photo {
  position: relative;
  min-height: 240px;
  background: #071326;
}

.article-visual-photo img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  transition: transform 420ms ease;
}

.article-visual-photo::after {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(to bottom, rgba(3, 6, 17, 0.04), transparent 55%, rgba(3, 6, 17, 0.32)),
    linear-gradient(120deg, rgba(47, 232, 255, 0.08), transparent 42%, rgba(132, 102, 255, 0.1));
  content: "";
  pointer-events: none;
}

.article-card:hover .article-visual-photo img {
  transform: scale(1.035);
}

.article-card-wide .article-visual {
  min-height: 100%;
  border-right: 1px solid var(--line);
  border-bottom: 0;
}

.visual-word-stack {
  display: flex;
  align-items: center;
  transform: rotate(-5deg);
}

.visual-letter {
  width: 68px;
  height: 76px;
  display: grid;
  margin-left: -8px;
  place-items: center;
  border: 1px solid rgba(47, 232, 255, 0.55);
  border-radius: 14px;
  color: var(--cyan);
  background: rgba(8, 21, 43, 0.9);
  box-shadow: 0 12px 28px rgba(0, 0, 0, 0.32);
  font-size: 2rem;
  font-weight: 900;
}

.visual-sound {
  width: 140px;
  height: 140px;
  display: grid;
  place-items: center;
  border: 1px solid rgba(185, 243, 61, 0.5);
  border-radius: 50%;
  color: var(--lime);
  background:
    repeating-linear-gradient(
      90deg,
      transparent 0 9px,
      rgba(185, 243, 61, 0.35) 9px 12px
    ),
    rgba(5, 8, 23, 0.65);
  box-shadow: 0 0 45px rgba(185, 243, 61, 0.14);
}

.visual-gap {
  display: flex;
  align-items: flex-end;
  gap: 12px;
}

.visual-gap span {
  width: 70px;
  height: 104px;
  display: grid;
  place-items: center;
  border: 1px solid rgba(132, 102, 255, 0.52);
  border-radius: 16px;
  color: #d9d1ff;
  background: rgba(13, 33, 64, 0.9);
  font-weight: 900;
}

.visual-gap span:last-child {
  height: 72px;
  border-color: rgba(47, 232, 255, 0.55);
  color: var(--cyan);
}

.article-card-body {
  min-width: 0;
  display: flex;
  flex: 1;
  flex-direction: column;
  padding: 28px;
}

.article-tag {
  width: fit-content;
  margin: 0 0 14px;
  color: var(--cyan);
  font-size: 0.75rem;
  font-weight: 900;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.article-card h3 {
  margin: 0;
  font-size: clamp(1.5rem, 2vw, 2.25rem);
  line-height: 1.12;
  letter-spacing: -0.035em;
  text-wrap: balance;
}

.article-card p {
  margin: 18px 0 0;
  color: var(--muted);
}

.article-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-top: auto;
  padding-top: 28px;
  color: #cdd6e6;
  font-size: 0.82rem;
}

.article-meta a,
.article-card > a {
  text-decoration: none;
}

.article-read-link {
  color: var(--cyan);
  font-weight: 900;
}

.trust-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
}

.trust-card {
  padding: 30px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: rgba(8, 21, 43, 0.62);
}

.trust-number {
  color: var(--lime);
  font-size: 0.78rem;
  font-weight: 900;
  letter-spacing: 0.14em;
}

.trust-card h3 {
  margin: 24px 0 10px;
  font-size: 1.28rem;
}

.trust-card p {
  margin: 0;
  color: var(--muted);
}

.cta-panel {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 42px;
  padding: clamp(36px, 6vw, 68px);
  border: 1px solid rgba(47, 232, 255, 0.36);
  border-radius: var(--radius-lg);
  background:
    radial-gradient(circle at 85% 20%, rgba(132, 102, 255, 0.28), transparent 30%),
    radial-gradient(circle at 10% 80%, rgba(47, 232, 255, 0.18), transparent 34%),
    var(--glass-strong);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.cta-panel h2 {
  max-width: 780px;
  margin: 0;
  font-size: clamp(2.2rem, 4vw, 4.4rem);
  line-height: 1.02;
  letter-spacing: -0.045em;
  text-wrap: balance;
}

.cta-panel p {
  max-width: 680px;
  margin: 18px 0 0;
  color: var(--muted);
}

.sticky-cta {
  position: fixed;
  z-index: 30;
  right: 22px;
  bottom: 22px;
  max-width: min(420px, calc(100vw - 44px));
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 12px 14px 12px 20px;
  border: 1px solid rgba(47, 232, 255, 0.48);
  border-radius: 20px;
  color: var(--paper);
  background: rgba(5, 8, 23, 0.9);
  box-shadow:
    0 18px 54px rgba(0, 0, 0, 0.44),
    0 0 36px rgba(47, 232, 255, 0.12);
  backdrop-filter: blur(18px);
}

.sticky-cta-copy {
  min-width: 0;
}

.sticky-cta strong,
.sticky-cta small {
  display: block;
}

.sticky-cta strong {
  font-size: 0.9rem;
}

.sticky-cta small {
  color: var(--muted);
  font-size: 0.72rem;
}

.sticky-cta .button {
  flex: 0 0 auto;
}

.site-footer {
  padding: 68px 0 112px;
  border-top: 1px solid var(--line);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: end;
  gap: 40px;
}

.footer-brand {
  width: 170px;
}

.footer-copy {
  max-width: 560px;
  margin: 18px 0 0;
  color: var(--muted);
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 18px 28px;
}

.footer-links a {
  color: var(--muted);
  text-decoration: none;
}

.footer-links a:hover {
  color: var(--cyan);
}

.reveal {
  opacity: 1;
  transform: none;
}

.js .reveal:not(.is-visible) {
  opacity: 0;
  transform: translateY(24px);
}

.js .reveal {
  transition:
    opacity 580ms ease,
    transform 580ms ease;
}

.article-page {
  --article-width: 780px;
}

.reading-progress {
  position: fixed;
  z-index: 50;
  top: 0;
  left: 0;
  width: var(--reading-progress, 0%);
  height: 3px;
  background: linear-gradient(90deg, var(--cyan), var(--violet), var(--lime));
  box-shadow: 0 0 18px rgba(47, 232, 255, 0.5);
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding-top: 44px;
  color: var(--muted);
  font-size: 0.88rem;
}

.breadcrumb a {
  color: var(--cyan);
  text-decoration: none;
}

.article-hero {
  padding: 58px 0 68px;
}

.article-hero-inner {
  max-width: 1030px;
}

.article-hero h1 {
  max-width: 980px;
  font-size: clamp(3.1rem, 6vw, 6.3rem);
}

.article-deck {
  max-width: 780px;
  margin: 26px 0 0;
  color: var(--muted);
  font-size: clamp(1.12rem, 1.7vw, 1.34rem);
}

.article-byline {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 22px;
  margin-top: 28px;
  color: #cad4e5;
  font-size: 0.9rem;
}

.article-layout {
  display: grid;
  grid-template-columns: minmax(0, var(--article-width)) 260px;
  align-items: start;
  justify-content: center;
  gap: clamp(48px, 8vw, 110px);
  padding-bottom: 110px;
}

.article-body {
  min-width: 0;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 1.15rem;
  line-height: 1.82;
}

.article-body > p:first-child {
  font-size: 1.3rem;
}

.article-body h2,
.article-body h3 {
  font-family: "Avenir Next", "Segoe UI", Arial, Helvetica, sans-serif;
  letter-spacing: -0.035em;
  line-height: 1.18;
  scroll-margin-top: 30px;
}

.article-body h2 {
  margin: 64px 0 20px;
  font-size: clamp(2rem, 3vw, 2.75rem);
}

.article-body h3 {
  margin: 38px 0 12px;
  font-size: 1.42rem;
}

.article-body p,
.article-body ul,
.article-body ol {
  color: #d8e0ee;
}

.article-body a {
  color: var(--cyan);
  text-decoration-color: rgba(47, 232, 255, 0.44);
  text-underline-offset: 3px;
}

.article-body a.button-primary,
.article-body a.button-primary:hover,
.article-body a.button-primary:focus-visible {
  color: #020712;
  text-decoration: none;
}

.article-body strong {
  color: var(--paper);
}

.article-body li + li {
  margin-top: 12px;
}

.source-note,
.article-callout {
  margin: 32px 0;
  padding: 24px 26px;
  border-left: 3px solid var(--cyan);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  background: rgba(13, 33, 64, 0.68);
  font-family: "Avenir Next", "Segoe UI", Arial, Helvetica, sans-serif;
  font-size: 0.98rem;
}

.article-callout {
  border-left-color: var(--lime);
}

.inline-cta {
  margin: 48px 0;
  padding: 30px;
  border: 1px solid rgba(132, 102, 255, 0.52);
  border-radius: var(--radius-md);
  background:
    radial-gradient(circle at 90% 10%, rgba(132, 102, 255, 0.25), transparent 32%),
    rgba(8, 21, 43, 0.86);
  font-family: "Avenir Next", "Segoe UI", Arial, Helvetica, sans-serif;
}

.inline-cta h2 {
  margin-top: 0;
  font-size: 1.8rem;
}

.inline-cta p {
  font-size: 1rem;
}

.article-aside {
  position: sticky;
  top: 32px;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: rgba(8, 21, 43, 0.7);
}

.article-aside h2 {
  margin: 0 0 16px;
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.article-aside ol {
  display: grid;
  gap: 11px;
  margin: 0;
  padding-left: 20px;
  color: var(--muted);
  font-size: 0.88rem;
}

.article-aside a {
  text-decoration: none;
}

.article-aside a:hover {
  color: var(--cyan);
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
}

.related-card {
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: rgba(8, 21, 43, 0.6);
  text-decoration: none;
}

.related-card span {
  display: block;
  color: var(--cyan);
  font-size: 0.72rem;
  font-weight: 900;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.related-card strong {
  display: block;
  margin-top: 10px;
  line-height: 1.3;
}

.not-found {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 32px;
  text-align: center;
}

.not-found-inner {
  max-width: 680px;
}

.not-found-code {
  margin: 0;
  color: var(--cyan);
  font-size: clamp(5rem, 18vw, 11rem);
  font-weight: 900;
  letter-spacing: -0.08em;
  line-height: 0.8;
}

.not-found h1 {
  margin: 30px 0 0;
  font-size: clamp(2.3rem, 5vw, 4.5rem);
  line-height: 1.02;
}

.not-found p {
  color: var(--muted);
}

@keyframes aurora-drift {
  from {
    opacity: 0.55;
    transform: rotate(-8deg) translate3d(-3%, -2%, 0) scale(0.94);
  }
  to {
    opacity: 0.82;
    transform: rotate(3deg) translate3d(5%, 3%, 0) scale(1.06);
  }
}

@view-transition {
  navigation: auto;
}

::view-transition-old(root),
::view-transition-new(root) {
  animation-duration: 280ms;
}

@supports (animation-timeline: view()) {
  .article-card,
  .trust-card {
    animation: card-reveal linear both;
    animation-range: entry 5% cover 28%;
    animation-timeline: view();
  }

  @keyframes card-reveal {
    from {
      opacity: 0.25;
      transform: translateY(28px) scale(0.98);
    }
    to {
      opacity: 1;
      transform: translateY(0) scale(1);
    }
  }
}

@media (max-width: 1160px) {
  .site-header-inner {
    grid-template-columns: auto 1fr auto;
  }

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

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

  .hero-copy {
    max-width: 820px;
  }

  .hero h1 {
    max-width: 850px;
  }

  .article-card,
  .article-card-wide {
    grid-column: span 6;
    display: flex;
  }

  .article-card-wide .article-visual {
    min-height: 215px;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }
}

@media (max-width: 900px) {
  .site-shell {
    width: min(calc(100% - 38px), var(--container));
  }

  .site-header-inner {
    grid-template-columns: 1fr auto;
  }

  .menu-button {
    display: block;
  }

  .main-nav {
    position: absolute;
    top: 76px;
    right: 19px;
    left: 19px;
    display: none;
    align-items: stretch;
    flex-direction: column;
    gap: 0;
    padding: 12px;
    border: 1px solid var(--line);
    border-radius: 20px;
    background: rgba(5, 8, 23, 0.96);
    box-shadow: var(--shadow);
    backdrop-filter: blur(20px);
  }

  .main-nav[data-open="true"] {
    display: flex;
  }

  .main-nav a {
    padding: 13px 14px;
  }

  .main-nav a::after {
    display: none;
  }

  .header-actions {
    display: none;
  }

  .hero-visual {
    min-height: 540px;
  }

  .section-heading,
  .cta-panel,
  .footer-grid {
    grid-template-columns: 1fr;
  }

  .section-heading {
    align-items: start;
  }

  .topic-strip {
    grid-template-columns: 1fr;
  }

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

  .article-layout {
    grid-template-columns: 1fr;
  }

  .article-aside {
    position: static;
    grid-row: 1;
  }

  .footer-links {
    justify-content: flex-start;
  }
}

@media (max-width: 680px) {
  .site-shell {
    width: min(calc(100% - 28px), var(--container));
  }

  .site-header-inner {
    min-height: 76px;
  }

  .brand,
  .brand img {
    width: 150px;
  }

  .hero {
    padding-top: 48px;
  }

  .hero h1,
  .article-hero h1 {
    font-size: clamp(2.75rem, 14vw, 4.5rem);
  }

  .hero-actions {
    align-items: stretch;
    flex-direction: column;
  }

  .hero-actions .button {
    width: 100%;
  }

  .hero-visual {
    min-height: 580px;
  }

  .feature-copy {
    width: auto;
    top: 28px;
    right: 24px;
    left: 24px;
  }

  .feature-copy h2 {
    font-size: 2rem;
  }

  .worksheet {
    width: 290px;
    height: 258px;
    right: 18px;
    bottom: 18px;
    padding: 20px;
  }

  .worksheet-row {
    height: 26px;
  }

  .word-card {
    min-width: 132px;
    padding: 14px 18px;
    font-size: 1.1rem;
  }

  .word-card-cyan {
    top: 255px;
    right: 30px;
  }

  .word-card-violet {
    top: 320px;
    right: 6px;
  }

  .word-card-lime {
    top: 385px;
    right: 42px;
  }

  .section {
    padding: 72px 0;
  }

  .article-card,
  .article-card-wide {
    grid-column: 1 / -1;
  }

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

  .sticky-cta {
    right: 10px;
    bottom: 10px;
    left: 10px;
    max-width: none;
    justify-content: space-between;
    padding-left: 16px;
  }

  .sticky-cta small {
    display: none;
  }

  .sticky-cta .button {
    min-height: 44px;
    padding: 10px 14px;
    font-size: 0.78rem;
  }

  .article-body {
    font-size: 1.08rem;
  }

  .article-body > p:first-child {
    font-size: 1.16rem;
  }

  .inline-cta .button {
    width: 100%;
    padding-inline: 16px;
    font-size: 0.9rem;
    line-height: 1.25;
    text-align: center;
  }
}

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

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }

  .js .reveal:not(.is-visible) {
    opacity: 1;
    transform: none;
  }
}