:root {
  --bg: #020617;
  --bg-2: #0b1120;
  --panel: rgba(15, 23, 42, 0.9);
  --panel-2: rgba(17, 24, 39, 0.94);
  --panel-3: rgba(30, 41, 59, 0.78);
  --ink: #e5edf8;
  --muted: #93a4bf;
  --line: rgba(148, 163, 184, 0.16);
  --accent: #ff4d6d;
  --accent-2: #5eead4;
  --accent-3: #7dd3fc;
  --shadow: 0 28px 80px rgba(0, 0, 0, 0.42);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at top left, rgba(255, 77, 109, 0.22), transparent 26%),
    radial-gradient(circle at top right, rgba(94, 234, 212, 0.08), transparent 28%),
    linear-gradient(180deg, #020617 0%, #07101f 52%, #050b14 100%);
  font-family: Inter, "Segoe UI Variable Text", "Segoe UI", Roboto, Arial, sans-serif;
  line-height: 1.68;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(148, 163, 184, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(148, 163, 184, 0.045) 1px, transparent 1px);
  background-size: 26px 26px;
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.92), transparent 95%);
}

a {
  color: #f87171;
  text-underline-offset: 3px;
}

a:hover {
  color: #fda4af;
}

.page {
  width: min(1280px, calc(100% - 26px));
  margin: 0 auto;
  padding: 18px 0 84px;
}

.hero,
.panel {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 24px;
  background: linear-gradient(180deg, rgba(15, 23, 42, 0.92), rgba(8, 15, 28, 0.96));
  box-shadow: var(--shadow);
  backdrop-filter: blur(12px);
}

.hero::before,
.panel::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(94, 234, 212, 0.45), transparent);
}

.hero::after,
.panel::after {
  content: "";
  position: absolute;
  inset: auto -10% -55% auto;
  width: 280px;
  height: 280px;
  border-radius: 999px;
  background: radial-gradient(circle, rgba(255, 77, 109, 0.14), transparent 70%);
}

.hero {
  padding: 36px;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 8px 14px;
  border-radius: 999px;
  border: 1px solid rgba(255, 77, 109, 0.3);
  background: rgba(255, 77, 109, 0.09);
  color: #ff90a5;
  font-family: "JetBrains Mono", "Cascadia Code", Consolas, monospace;
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

h1,
h2,
h3 {
  font-family: Inter, "Segoe UI Variable Display", "Segoe UI", Roboto, Arial, sans-serif;
  line-height: 1.08;
  letter-spacing: -0.03em;
  margin: 0;
}

h1 {
  margin-top: 16px;
  max-width: 13ch;
  font-size: clamp(2.75rem, 4.7vw, 5rem);
  font-weight: 850;
}

.dek {
  max-width: 74ch;
  margin: 18px 0 0;
  font-size: 1.04rem;
  color: #aab9cf;
}

.byline {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 18px;
  margin-top: 20px;
  color: #d8e3f3;
  font-size: 0.98rem;
}

.byline strong {
  font-weight: 800;
}

.byline span:last-child {
  color: var(--muted);
}

.profile-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 18px;
}

.profile-links a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 12px;
  border-radius: 12px;
  border: 1px solid rgba(148, 163, 184, 0.14);
  background: rgba(10, 18, 31, 0.78);
  color: #dce8f9;
  text-decoration: none;
  font-family: "JetBrains Mono", "Cascadia Code", Consolas, monospace;
  font-size: 0.84rem;
}

.profile-links a span {
  color: #7dd3fc;
}

.profile-links a:hover {
  border-color: rgba(255, 77, 109, 0.38);
  background: rgba(18, 29, 48, 0.94);
  color: #f8fbff;
}

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.hero-meta span {
  display: inline-flex;
  align-items: center;
  padding: 11px 14px;
  border-radius: 14px;
  background: rgba(10, 18, 31, 0.88);
  border: 1px solid rgba(94, 234, 212, 0.13);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.03);
  color: #dce8f9;
  font-family: "JetBrains Mono", "Cascadia Code", Consolas, monospace;
  font-size: 0.9rem;
}

.hero-visual,
.inline-proof {
  margin: 0;
}

.hero-visual {
  margin-top: 24px;
}

.hero-visual img,
.inline-proof img {
  width: 100%;
  display: block;
  border-radius: 14px;
  border: 1px solid rgba(148, 163, 184, 0.11);
}

.hero-visual figcaption,
.inline-proof figcaption {
  margin-top: 12px;
  color: var(--muted);
  font-size: 0.84rem;
  line-height: 1.55;
}

.inline-proof {
  margin-top: 18px;
  padding: 12px;
  border-radius: 18px;
  border: 1px solid rgba(148, 163, 184, 0.1);
  background: rgba(8, 14, 25, 0.76);
}

.grid {
  display: grid;
  gap: 20px;
  margin-top: 24px;
}

.grid > *,
.grid-2 > *,
.grid-3 > * {
  min-width: 0;
}

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

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

.panel {
  padding: 28px;
}

.card-kicker {
  display: inline-block;
  margin-bottom: 14px;
  color: #76f4de;
  font-family: "JetBrains Mono", "Cascadia Code", Consolas, monospace;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.section-head,
.stat-head {
  display: flex;
  align-items: center;
  gap: 12px;
}

.panel h2 {
  font-size: clamp(1.55rem, 2vw, 2.05rem);
  margin-bottom: 16px;
}

.panel h3 {
  margin-bottom: 10px;
  font-size: 1.18rem;
  font-weight: 750;
  color: #f5f8fd;
}

.panel p,
.panel li {
  color: #c3d0e3;
}

.icon-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  flex: 0 0 40px;
  border-radius: 12px;
  border: 1px solid rgba(255, 77, 109, 0.24);
  background: linear-gradient(180deg, rgba(255, 77, 109, 0.12), rgba(94, 234, 212, 0.06));
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.04);
}

.icon-badge svg {
  width: 18px;
  height: 18px;
  fill: none;
  stroke: #ff90a5;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.stat {
  padding: 22px;
  border-radius: 22px;
  border: 1px solid rgba(148, 163, 184, 0.11);
  background: linear-gradient(180deg, rgba(18, 27, 45, 0.96), rgba(9, 14, 26, 0.96));
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.03);
}

.stat strong {
  display: block;
  margin-top: 12px;
  color: #f8fbff;
  font-size: 1.56rem;
  font-weight: 800;
  line-height: 1.16;
}

.stat p {
  margin-bottom: 0;
  color: #9fb0c9;
}

.note {
  border-left: 4px solid var(--accent);
  padding: 16px 18px;
  border-radius: 0 16px 16px 0;
  background: rgba(255, 77, 109, 0.08);
  color: #e6eef9;
}

.algo-demo {
  margin-top: 26px;
  padding: 22px;
  border-radius: 22px;
  border: 1px solid rgba(94, 234, 212, 0.16);
  background:
    radial-gradient(circle at top right, rgba(125, 211, 252, 0.12), transparent 34%),
    linear-gradient(180deg, rgba(7, 15, 28, 0.96), rgba(5, 11, 20, 0.98));
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.03);
}

.algo-demo-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 18px;
}

.algo-demo-head h3 {
  margin-top: 8px;
  font-size: 1.6rem;
}

.algo-demo-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 10px;
}

.algo-demo-copy {
  max-width: 72ch;
  margin: 14px 0 0;
  color: #a8b8cf;
}

.algo-form {
  display: grid;
  gap: 12px;
  margin-top: 18px;
}

.algo-field {
  display: grid;
  gap: 10px;
}

.algo-input {
  width: 100%;
  padding: 14px 16px;
  border: 1px solid rgba(148, 163, 184, 0.16);
  border-radius: 14px;
  background: rgba(8, 15, 27, 0.96);
  color: #f8fbff;
  font-family: "JetBrains Mono", "Cascadia Code", Consolas, monospace;
  font-size: 0.96rem;
}

.algo-input:focus {
  outline: 2px solid rgba(125, 211, 252, 0.22);
  border-color: rgba(125, 211, 252, 0.38);
}

.algo-form-copy {
  margin: 0;
  color: #97abc8;
  font-size: 0.92rem;
}

.algo-demo-button {
  padding: 12px 16px;
  border: 1px solid rgba(255, 77, 109, 0.28);
  border-radius: 14px;
  background: linear-gradient(180deg, rgba(255, 77, 109, 0.18), rgba(125, 211, 252, 0.08));
  color: #f8fbff;
  font-family: "JetBrains Mono", "Cascadia Code", Consolas, monospace;
  font-size: 0.84rem;
  font-weight: 700;
  cursor: pointer;
}

.algo-demo-button:hover:not(:disabled) {
  border-color: rgba(255, 77, 109, 0.48);
  transform: translateY(-1px);
}

.algo-demo-button:disabled {
  cursor: wait;
  opacity: 0.82;
}

.algo-stage-strip {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 10px;
  margin-top: 20px;
}

.algo-stage {
  padding: 10px 12px;
  border-radius: 999px;
  border: 1px solid rgba(148, 163, 184, 0.14);
  background: rgba(10, 18, 31, 0.76);
  color: #8fa4c1;
  font-family: "JetBrains Mono", "Cascadia Code", Consolas, monospace;
  font-size: 0.77rem;
  text-align: center;
  transition: border-color 180ms ease, background 180ms ease, color 180ms ease, transform 180ms ease;
}

.algo-stage.is-active {
  border-color: rgba(94, 234, 212, 0.42);
  background: rgba(94, 234, 212, 0.12);
  color: #e8f8ff;
  transform: translateY(-1px);
}

.algo-demo-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  margin-top: 18px;
}

.algo-card {
  padding: 18px;
  border-radius: 18px;
  border: 1px solid rgba(148, 163, 184, 0.11);
  background: rgba(9, 16, 28, 0.92);
}

.algo-card-output {
  background:
    radial-gradient(circle at top left, rgba(255, 77, 109, 0.08), transparent 34%),
    rgba(9, 16, 28, 0.94);
}

.algo-rows {
  display: grid;
  gap: 10px;
}

.algo-row {
  display: grid;
  gap: 6px;
  padding: 12px 14px;
  border-radius: 14px;
  border: 1px solid rgba(148, 163, 184, 0.11);
  background: rgba(18, 27, 45, 0.9);
  transition: transform 180ms ease, border-color 180ms ease, background 180ms ease, box-shadow 180ms ease;
}

.algo-row span {
  color: #9ab0cc;
  font-family: "JetBrains Mono", "Cascadia Code", Consolas, monospace;
  font-size: 0.76rem;
}

.algo-row code {
  display: block;
  overflow-wrap: anywhere;
  line-height: 1.45;
}

.algo-label {
  display: inline-flex;
  margin-bottom: 14px;
  color: #ff90a5;
  font-family: "JetBrains Mono", "Cascadia Code", Consolas, monospace;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.chip-row,
.algo-password {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  min-height: 44px;
}

.chip {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 38px;
  min-height: 38px;
  padding: 0 10px;
  border-radius: 12px;
  border: 1px solid rgba(148, 163, 184, 0.14);
  background: rgba(18, 27, 45, 0.96);
  color: #dce8f9;
  font-family: "JetBrains Mono", "Cascadia Code", Consolas, monospace;
  font-size: 0.9rem;
  font-weight: 700;
  transition: transform 180ms ease, border-color 180ms ease, background 180ms ease, box-shadow 180ms ease;
}

.chip.is-hot,
.algo-row.is-hot,
.algo-index-item.is-hot,
.algo-password-char.is-hot {
  border-color: rgba(94, 234, 212, 0.5);
  background: rgba(94, 234, 212, 0.14);
  box-shadow: 0 0 0 1px rgba(94, 234, 212, 0.08), 0 0 28px rgba(94, 234, 212, 0.12);
  transform: translateY(-2px);
}

.algo-password-char {
  min-width: 42px;
  min-height: 42px;
  font-size: 1rem;
  border-color: rgba(255, 77, 109, 0.18);
}

.algo-index-list {
  display: grid;
  gap: 8px;
}

.algo-index-item {
  display: grid;
  grid-template-columns: 1fr auto auto;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border-radius: 14px;
  border: 1px solid rgba(148, 163, 184, 0.11);
  background: rgba(18, 27, 45, 0.9);
  transition: transform 180ms ease, border-color 180ms ease, background 180ms ease, box-shadow 180ms ease;
}

.algo-index-item span {
  color: #9ab0cc;
  font-family: "JetBrains Mono", "Cascadia Code", Consolas, monospace;
  font-size: 0.78rem;
  text-transform: uppercase;
}

.algo-index-item strong {
  color: #f8fbff;
  font-family: "JetBrains Mono", "Cascadia Code", Consolas, monospace;
  font-size: 0.92rem;
}

.algo-index-item code {
  min-width: 34px;
  text-align: center;
}

.algo-index-item.is-done code {
  color: #86efac;
}

.algo-foot {
  margin: 14px 0 0;
  color: #93a4bf;
  font-size: 0.9rem;
}

.algo-status {
  color: #dbe9f9;
}

.algo-result-stack {
  display: grid;
  gap: 12px;
}

.algo-result {
  padding: 14px 16px;
  border-radius: 16px;
  border: 1px solid rgba(148, 163, 184, 0.12);
  background: rgba(12, 21, 36, 0.92);
}

.algo-result span {
  display: block;
  margin-bottom: 8px;
  color: #9ab0cc;
  font-size: 0.82rem;
}

.algo-result strong {
  display: block;
  color: #f8fbff;
  font-family: "JetBrains Mono", "Cascadia Code", Consolas, monospace;
  font-size: 1.1rem;
  overflow-wrap: anywhere;
}

ul,
ol {
  padding-left: 20px;
  margin: 0;
}

li + li {
  margin-top: 10px;
}

li::marker {
  color: #ff90a5;
}

.timeline {
  display: grid;
  gap: 14px;
}

.timeline-item {
  padding: 16px 18px;
  border-radius: 18px;
  border: 1px solid rgba(148, 163, 184, 0.11);
  background: rgba(11, 19, 34, 0.88);
}

.timeline-item strong {
  display: block;
  margin-bottom: 4px;
  color: #f8fbff;
  font-family: "JetBrains Mono", "Cascadia Code", Consolas, monospace;
  font-size: 0.92rem;
}

.lab-steps {
  margin: 0 0 18px;
}

.lab-steps li {
  color: #d4deec;
}

code,
pre {
  font-family: "JetBrains Mono", "Fira Code", "Cascadia Code", Consolas, monospace;
}

code {
  border-radius: 8px;
  background: rgba(148, 163, 184, 0.12);
  color: #7dd3fc;
  padding: 2px 6px;
  font-size: 0.94em;
}

pre {
  margin: 0;
  padding: 18px 20px;
  max-width: 100%;
  overflow-x: auto;
  white-space: pre;
  word-wrap: normal;
  overflow-y: hidden;
  border-radius: 18px;
  background: linear-gradient(180deg, #020617, #050b14);
  color: #dbe9f9;
  border: 1px solid rgba(94, 234, 212, 0.14);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.03);
}

pre code {
  display: block;
  padding: 0;
  white-space: inherit;
  background: transparent;
  color: inherit;
}

pre::-webkit-scrollbar {
  height: 8px;
}

pre::-webkit-scrollbar-track {
  background: rgba(148, 163, 184, 0.08);
  border-radius: 999px;
}

pre::-webkit-scrollbar-thumb {
  background: rgba(255, 77, 109, 0.46);
  border-radius: 999px;
}

.tok-key {
  color: #fda4af;
}

.tok-fn {
  color: #7dd3fc;
}

.tok-str {
  color: #86efac;
}

.easter-egg {
  background:
    linear-gradient(135deg, rgba(94, 234, 212, 0.06), rgba(255, 77, 109, 0.09)),
    linear-gradient(180deg, rgba(15, 23, 42, 0.92), rgba(8, 15, 28, 0.96));
}

@media (max-width: 1120px) {
  h1 {
    max-width: 12ch;
  }
}

@media (max-width: 900px) {
  .grid-3,
  .grid-2 {
    grid-template-columns: 1fr;
  }

  .algo-demo-head,
  .algo-demo-grid,
  .algo-stage-strip {
    grid-template-columns: 1fr;
  }

  .algo-demo-head {
    display: grid;
  }

  .algo-demo-button {
    width: 100%;
  }

  .algo-demo-actions {
    justify-content: stretch;
  }

  .algo-index-item {
    grid-template-columns: 1fr auto;
  }

  .algo-index-item code {
    grid-column: 1 / -1;
    justify-self: start;
  }

  .hero,
  .panel {
    padding: 22px;
    border-radius: 20px;
  }

  .page {
    width: min(100% - 14px, 1280px);
    padding-top: 10px;
  }

  h1 {
    max-width: 100%;
    font-size: clamp(2.1rem, 9vw, 3.1rem);
  }

  .dek {
    font-size: 0.98rem;
  }

  .profile-links {
    gap: 8px;
  }

  .profile-links a {
    width: 100%;
    justify-content: space-between;
  }

  .hero-meta span {
    width: 100%;
    justify-content: flex-start;
  }

  .icon-badge {
    width: 36px;
    height: 36px;
    flex-basis: 36px;
  }

  .section-head,
  .stat-head {
    align-items: flex-start;
  }

  pre {
    padding: 14px 16px;
    font-size: 0.76rem;
    border-radius: 16px;
  }
}

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

  .algo-demo-button,
  .algo-stage,
  .chip,
  .algo-index-item {
    transition: none;
  }
}