:root {
  --color-bg: #ffffff;
  --color-surface: #f8fafc;
  --color-surface-alt: #f1f5f9;
  --color-border: #e2e8f0;
  --color-text: #0f172a;
  --color-text-secondary: #475569;
  --color-text-muted: #64748b;
  --color-primary: #2563eb;
  --color-primary-dark: #1d4ed8;
  --color-primary-contrast: #ffffff;

  /* Props: beige 90s hardware, sticky-note yellow, status LEDs */
  --color-beige: #e7e0cf;
  --color-beige-dark: #c9bfa6;
  --color-screen: #0b1a10;
  --color-phosphor: #4ade80;
  --color-sticky: #fde68a;
  --color-sticky-text: #3f3a1a;
  --color-led-red: #ef4444;
  --color-led-green: #22c55e;
  --color-highlight: #fde68a;
  --color-status-bg: #0f172a;
  --color-status-text: #cbd5e1;

  --max-width: 1080px;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-mono: ui-monospace, "Cascadia Mono", "SFMono-Regular", Consolas, "Liberation Mono", monospace;
}

@media (prefers-color-scheme: dark) {
  :root {
    --color-bg: #0f172a;
    --color-surface: #1e293b;
    --color-surface-alt: #172033;
    --color-border: #334155;
    --color-text: #f8fafc;
    --color-text-secondary: #cbd5e1;
    --color-text-muted: #94a3b8;
    --color-primary: #3b82f6;
    --color-primary-dark: #60a5fa;
    --color-beige: #b8b09c;
    --color-beige-dark: #8f8775;
    --color-highlight: #a16207;
    --color-status-bg: #020617;
  }
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font-sans);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.6;
}

h1, h2, h3 { line-height: 1.2; font-weight: 800; }
h1 { font-size: clamp(2.25rem, 5vw, 3.25rem); margin: 0 0 1.25rem; letter-spacing: -0.02em; }
h2 { font-size: clamp(1.6rem, 3.5vw, 2rem); margin: 0 0 1.25rem; letter-spacing: -0.01em; }
h2 small { font-size: 0.55em; font-weight: 600; color: var(--color-text-muted); }
h3 { font-size: 1.15rem; margin: 0 0 0.5rem; }

p { margin: 0 0 1rem; color: var(--color-text-secondary); }

a { color: var(--color-primary); }
a:hover { color: var(--color-primary-dark); }

abbr { text-decoration: underline dotted; cursor: help; }

.container { max-width: var(--max-width); margin: 0 auto; padding: 0 1.25rem; }
.narrow { max-width: 760px; }
.center { text-align: center; justify-content: center; }

.visually-hidden {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}

/* Buttons */
.btn {
  white-space: nowrap;
  display: inline-block;
  padding: 0.75rem 1.4rem;
  border-radius: 6px;
  font-weight: 700;
  text-decoration: none;
  border: 2px solid transparent;
  transition: transform 0.1s ease, background 0.15s ease;
}
.btn:active { transform: translateY(1px); }
.btn-primary { background: var(--color-primary); color: var(--color-primary-contrast); }
.btn-primary:hover { background: var(--color-primary-dark); color: var(--color-primary-contrast); }
.btn-ghost { border-color: var(--color-border); color: var(--color-text); background: var(--color-bg); }
.btn-ghost:hover { border-color: var(--color-primary); color: var(--color-primary); }
.btn-small { padding: 0.4rem 0.9rem; font-size: 0.9rem; background: var(--color-primary); color: var(--color-primary-contrast) !important; }
.btn-small:hover { background: var(--color-primary-dark); }

/* LEDs */
.led {
  display: inline-block;
  width: 10px; height: 10px;
  border-radius: 50%;
  vertical-align: middle;
}
.led-red { background: var(--color-led-red); box-shadow: 0 0 6px var(--color-led-red); }
.led-green { background: var(--color-led-green); box-shadow: 0 0 6px var(--color-led-green); }
.led-blink { animation: blink 1.6s steps(1) infinite; }

@keyframes blink { 50% { opacity: 0.25; box-shadow: none; } }

/* Status bar */
.status-bar {
  background: var(--color-status-bg);
  color: var(--color-status-text);
  font-family: var(--font-mono);
  font-size: 0.78rem;
}
.status-inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.25rem 1.5rem;
  padding-top: 0.4rem;
  padding-bottom: 0.4rem;
}
.status-threat { color: #fbbf24; }

/* Header */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
}
.header-inner {
  display: flex; align-items: center; justify-content: space-between;
  gap: 1rem; padding-top: 0.85rem; padding-bottom: 0.85rem;
}
.logo { display: flex; align-items: center; gap: 0.7rem; text-decoration: none; color: var(--color-text); }
.logo:hover { color: var(--color-text); }
.logo-box {
  position: relative;
  width: 36px; height: 24px;
  background: #111;
  border-radius: 3px;
  flex-shrink: 0;
}
.logo-box .led { position: absolute; top: 4px; right: 5px; width: 5px; height: 5px; }
.logo-text { font-weight: 800; font-size: 1.1rem; line-height: 1.1; }
.logo-text small {
  display: block; font-weight: 500; font-size: 0.72rem;
  color: var(--color-text-muted); font-family: var(--font-mono);
}
.site-nav { display: flex; align-items: center; gap: 1.4rem; }
.site-nav a:not(.btn) { color: var(--color-text-secondary); font-weight: 600; text-decoration: none; font-size: 0.95rem; }
.site-nav a:not(.btn):hover { color: var(--color-primary); }

/* Hero */
.hero {
  padding: 4.5rem 0 4rem;
  background: linear-gradient(180deg, var(--color-surface), var(--color-bg));
}
.hero-inner {
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: 3rem;
  align-items: center;
}
.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--color-primary);
  font-weight: 600;
}
.highlight {
  background: linear-gradient(transparent 55%, var(--color-highlight) 55%);
  padding: 0 0.1em;
}
.hero-sub { font-size: 1.08rem; max-width: 600px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 0.75rem; margin-top: 1.75rem; }

/* CRT monitor prop */
.monitor { position: relative; margin: 0; justify-self: center; width: 100%; max-width: 360px; }
.monitor-screen {
  background: var(--color-beige);
  border: 3px solid var(--color-beige-dark);
  border-radius: 14px;
  padding: 22px;
  box-shadow: 0 18px 40px rgba(15, 23, 42, 0.18);
}
.terminal {
  margin: 0;
  background: var(--color-screen);
  color: var(--color-phosphor);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  line-height: 1.55;
  padding: 1rem;
  border-radius: 8px;
  min-height: 180px;
  white-space: pre;
  overflow: hidden;
  box-shadow: inset 0 0 22px rgba(74, 222, 128, 0.15);
}
.cursor { animation: blink 1s steps(1) infinite; }
.monitor-neck { width: 70px; height: 24px; margin: 0 auto; background: var(--color-beige-dark); }
.monitor-base { width: 170px; height: 14px; margin: 0 auto; background: var(--color-beige); border: 2px solid var(--color-beige-dark); border-radius: 6px 6px 3px 3px; }
.sticky-note {
  position: absolute;
  right: -14px; bottom: 58px;
  width: 128px;
  padding: 0.7rem 0.75rem 0.85rem;
  background: var(--color-sticky);
  color: var(--color-sticky-text);
  font-family: "Comic Sans MS", "Chalkboard SE", "Segoe Print", cursive;
  font-size: 1rem;
  font-weight: 700;
  line-height: 1.25;
  transform: rotate(6deg);
  box-shadow: 2px 6px 12px rgba(0, 0, 0, 0.22);
  transition: transform 0.2s ease;
}
.sticky-note:hover { transform: rotate(-2deg) scale(1.05); }
.sticky-label { display: block; font-size: 0.75rem; font-weight: 400; }
.sticky-small { display: block; font-size: 0.7rem; font-weight: 400; margin-top: 0.3rem; }

/* Sections */
.section { padding: 4.5rem 0; }
.section-alt { background: var(--color-surface); }
.lede { font-size: 1.08rem; }

/* Dialogue */
.dialogue { display: flex; flex-direction: column; gap: 0.6rem; margin: 1.75rem 0; }
.line {
  margin: 0;
  max-width: 85%;
  padding: 0.7rem 1rem;
  border-radius: 14px;
  color: var(--color-text);
}
.speaker {
  display: block;
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-muted);
  margin-bottom: 0.15rem;
}
.line-them { align-self: flex-start; background: var(--color-bg); border: 1px solid var(--color-border); border-bottom-left-radius: 4px; }
.line-us { align-self: flex-end; background: var(--color-primary); color: var(--color-primary-contrast); border-bottom-right-radius: 4px; }
.line-us .speaker { color: rgba(255, 255, 255, 0.75); }
.line-big { font-size: 1.15rem; font-weight: 700; }
.aside { font-style: italic; color: var(--color-text-muted); }

/* Checklist */
.checklist {
  border: 0; padding: 0; margin: 1.5rem 0;
  display: flex; flex-direction: column; gap: 0.5rem;
}
.checklist label {
  display: flex; gap: 0.8rem; align-items: flex-start;
  padding: 0.85rem 1rem;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  cursor: pointer;
  color: var(--color-text);
  transition: background 0.15s ease, border-color 0.15s ease;
}
.checklist label:hover { border-color: var(--color-primary); }
.checklist label.is-checked { background: var(--color-surface-alt); border-color: var(--color-primary); }
.checklist input {
  flex-shrink: 0;
  width: 1.15rem; height: 1.15rem;
  margin-top: 0.2rem;
  accent-color: var(--color-primary);
}
.diagnosis {
  position: sticky; bottom: 1rem;
  background: var(--color-status-bg);
  color: var(--color-status-text);
  border-radius: 10px;
  padding: 1rem 1.25rem;
  margin: 1.5rem 0;
  box-shadow: 0 10px 30px rgba(15, 23, 42, 0.25);
}
.diagnosis-score { font-family: var(--font-mono); font-weight: 700; color: var(--color-phosphor); margin: 0 0 0.25rem; }
.diagnosis-text { margin: 0; color: #f8fafc; }
.no-judgment {
  border-left: 4px solid var(--color-primary);
  padding-left: 1rem;
}

/* Things grid */
.things-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.25rem;
  margin-top: 2rem;
}
.thing {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: 10px;
  padding: 1.5rem;
  display: flex; flex-direction: column;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}
.thing:hover { transform: translateY(-3px) rotate(-0.4deg); box-shadow: 0 10px 24px rgba(15, 23, 42, 0.1); }
.thing-icon { font-size: 1.9rem; margin-bottom: 0.5rem; }
.thing p { margin-bottom: 0.75rem; }
.small-print {
  margin-top: auto;
  margin-bottom: 0 !important;
  padding-top: 0.75rem;
  border-top: 1px dashed var(--color-border);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-text-muted);
}

/* The Internet */
.internet-inner {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 3rem;
  align-items: center;
}
.internet-box {
  position: relative;
  width: 220px; height: 150px;
  background: linear-gradient(160deg, #1f1f1f, #050505);
  border: 0;
  border-radius: 6px;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.35), inset 0 1px 0 rgba(255, 255, 255, 0.08);
  cursor: pointer;
  font: inherit;
  transition: transform 0.1s ease;
}
.internet-box:hover { transform: rotate(-1deg); }
.internet-box.is-shaking { animation: shake 0.4s ease; }
.internet-box .led { position: absolute; top: 16px; right: 18px; width: 12px; height: 12px; }
.internet-label {
  position: absolute; left: 16px; bottom: 14px;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.25em;
  color: #6b7280;
}
.internet-msg { font-weight: 700; color: var(--color-text); min-height: 1.6em; }

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  20% { transform: translateX(-8px) rotate(-2deg); }
  40% { transform: translateX(8px) rotate(2deg); }
  60% { transform: translateX(-5px); }
  80% { transform: translateX(5px); }
}

/* FAQ */
details {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  margin-bottom: 0.6rem;
}
summary {
  cursor: pointer;
  padding: 1rem 1.25rem;
  font-weight: 700;
  color: var(--color-text);
  list-style: none;
}
summary::-webkit-details-marker { display: none; }
summary::before {
  content: "+";
  display: inline-block;
  width: 1.25rem;
  font-family: var(--font-mono);
  color: var(--color-primary);
}
details[open] summary::before { content: "\2212"; }
details p { padding: 0 1.25rem 1rem 2.5rem; margin: 0; }

/* CTA */
.cta { background: linear-gradient(180deg, var(--color-bg), var(--color-surface)); }
.fine { font-size: 0.82rem; color: var(--color-text-muted); margin-top: 1.5rem; }

/* Footer */
.site-footer {
  border-top: 1px solid var(--color-border);
  padding: 2rem 0;
  font-size: 0.9rem;
}
.site-footer p { margin: 0 0 0.5rem; }
.site-footer .fine { margin-top: 0; }

/* Responsive */
@media (max-width: 860px) {
  .site-nav a:not(.btn) { display: none; }
  .hero-inner { grid-template-columns: 1fr; }
  .monitor { max-width: 320px; margin-top: 1rem; }
  .internet-inner { grid-template-columns: 1fr; justify-items: center; text-align: center; gap: 2rem; }
}

@media (max-width: 480px) {
  .logo-text small { display: none; }
  .status-threat { display: none; }
  .diagnosis { position: static; }
  .logo-text { font-size: 0.95rem; }
  .line { max-width: 95%; }
  .sticky-note { right: -4px; width: 112px; font-size: 0.9rem; }
  .terminal { font-size: 0.68rem; }
  details p { padding-left: 1.25rem; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
  html { scroll-behavior: auto; }
}