/* ============================================================
   Dragon's Egg — style.css
   Dark-first. Serious cryptography, beautiful presentation.
   No frameworks, no build step. Static HTML + CSS.
   ============================================================ */

:root {
  /* ---- COLOR PRIMITIVES ---- */
  --void:      #080c0a;
  --canopy:    #0a0f0d;
  --loam:      #121b16;
  --undergrowth: #182420;
  --moss:      #5b8a5a;
  --fern:      #7aab6f;
  --sage:      #9cc08a;
  --bark:      #8a6a47;
  --lantern:   #c49245;
  --moonlight: #9fb1bd;
  --ink:       #e4ddd0;
  --chalk:     #f5f0e8;

  /* ---- SEMANTIC ---- */
  --bg:        var(--canopy);
  --bg-raised: var(--loam);
  --bg-inset:  var(--void);
  --fg:        var(--ink);
  --fg-dim:    #a89e8e;
  --fg-muted:  #7a7265;
  --fg-faint:  #4a453e;
  --accent:    var(--moss);
  --accent-bright: var(--fern);
  --accent-soft: rgba(91, 138, 90, 0.12);
  --warm:      var(--lantern);
  --warm-soft: rgba(196, 146, 69, 0.10);
  --danger:    #d9663f;
  --danger-soft: rgba(217, 102, 63, 0.12);
  --line:      rgba(228, 221, 208, 0.08);
  --line-strong: rgba(228, 221, 208, 0.15);

  /* ---- TYPOGRAPHY ---- */
  --font-display: 'Iowan Old Style', 'Palatino Linotype', Palatino, Georgia, serif;
  --font-body: -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
  --font-mono: 'SF Mono', 'Cascadia Code', 'JetBrains Mono', ui-monospace, Menlo, monospace;

  /* ---- SPACING ---- */
  --s1: 4px; --s2: 8px; --s3: 12px; --s4: 16px; --s5: 24px;
  --s6: 36px; --s7: 56px; --s8: 80px; --s9: 120px;

  /* ---- RADII ---- */
  --r1: 3px; --r2: 6px; --r3: 10px; --r4: 16px;

  /* ---- TRANSITIONS ---- */
  --ease: cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --dur: 180ms;

  color-scheme: dark;
}

/* ---- RESET ---- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  min-height: 100vh;
}

img, svg { display: block; max-width: 100%; }
ul, ol { list-style: none; }

a {
  color: var(--accent-bright);
  text-decoration: none;
  transition: color var(--dur) var(--ease);
}
a:hover { color: var(--warm); }

/* ---- TYPOGRAPHY ---- */
h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 400;
  line-height: 1.2;
  color: var(--chalk);
  letter-spacing: -0.01em;
}
h1 { font-size: clamp(2rem, 5vw, 3.2rem); }
h2 { font-size: clamp(1.4rem, 3vw, 1.9rem); }
h3 { font-size: 1.15rem; }

p { color: var(--fg-dim); }

code, kbd, samp {
  font-family: var(--font-mono);
  font-size: 0.88em;
  background: var(--accent-soft);
  color: var(--accent-bright);
  padding: 2px 6px;
  border-radius: var(--r1);
}
pre {
  font-family: var(--font-mono);
  font-size: 13.5px;
  line-height: 1.6;
  background: var(--bg-inset);
  color: var(--fg);
  border: 1px solid var(--line-strong);
  border-radius: var(--r3);
  padding: var(--s5);
  overflow-x: auto;
}
pre code {
  background: none;
  color: inherit;
  padding: 0;
  font-size: inherit;
}

/* ---- LAYOUT ---- */
.wrap {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 var(--s5);
}
.wrap--narrow {
  max-width: 780px;
}

/* ============================================================
   NAV
   ============================================================ */
.nav {
  display: flex;
  align-items: center;
  gap: var(--s4);
  padding: var(--s4) var(--s5);
  background: rgba(10, 15, 13, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  position: sticky;
  top: 0;
  z-index: 100;
  border-bottom: 1px solid var(--line);
}
.nav__mark {
  width: 30px;
  height: 30px;
  border-radius: 6px;
  display: grid;
  place-items: center;
  background: var(--accent);
  color: var(--void);
  font-weight: 700;
  font-family: var(--font-mono);
  font-size: 15px;
}
.nav__name {
  font-family: var(--font-display);
  font-size: 1.15rem;
  color: var(--chalk);
  letter-spacing: -0.02em;
}
.nav__tag {
  color: var(--fg-muted);
  font-size: 0.78rem;
  font-family: var(--font-mono);
}
.nav__links {
  margin-left: auto;
  display: flex;
  gap: var(--s2);
  align-items: center;
}
.nav__link {
  font-size: 0.82rem;
  color: var(--fg-dim);
  padding: 6px 14px;
  border-radius: var(--r2);
  transition: color var(--dur) var(--ease), background var(--dur) var(--ease);
}
.nav__link:hover {
  color: var(--chalk);
  background: rgba(228, 221, 208, 0.06);
}
.nav__link--active {
  color: var(--accent-bright);
  background: var(--accent-soft);
}

/* ============================================================
   HERO
   ============================================================ */
.hero {
  position: relative;
  overflow: hidden;
  padding: var(--s9) var(--s5) var(--s8);
  background:
    radial-gradient(ellipse 70% 50% at 70% 20%, rgba(91, 138, 90, 0.06) 0%, transparent 70%),
    radial-gradient(ellipse 50% 60% at 20% 80%, rgba(196, 146, 69, 0.04) 0%, transparent 60%),
    linear-gradient(180deg, var(--void) 0%, var(--canopy) 100%);
}
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.015'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
  opacity: 0.5;
  pointer-events: none;
}
.hero__inner {
  max-width: 1080px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
}
.hero__eyebrow {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: var(--s4);
}
.hero h1 {
  font-size: clamp(2.2rem, 5.5vw, 3.6rem);
  max-width: 20ch;
  margin-bottom: var(--s5);
  text-wrap: balance;
  line-height: 1.15;
}
.hero h1 em {
  font-style: italic;
  color: var(--accent-bright);
}
.hero__sub {
  font-size: clamp(1.05rem, 2vw, 1.25rem);
  color: var(--fg-dim);
  max-width: 56ch;
  line-height: 1.6;
  margin-bottom: var(--s6);
}
.hero__cta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--s3);
}

/* ============================================================
   BUTTONS
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-body);
  font-size: 0.88rem;
  font-weight: 500;
  padding: 12px 24px;
  border-radius: var(--r2);
  border: 1px solid transparent;
  cursor: pointer;
  white-space: nowrap;
  transition: all var(--dur) var(--ease);
}
.btn--primary {
  background: var(--accent);
  color: var(--void);
  border-color: var(--accent);
}
.btn--primary:hover {
  background: var(--accent-bright);
  border-color: var(--accent-bright);
  color: var(--void);
}
.btn--secondary {
  background: transparent;
  color: var(--fg);
  border-color: var(--line-strong);
}
.btn--secondary:hover {
  border-color: var(--fg-muted);
  color: var(--chalk);
  background: rgba(228, 221, 208, 0.04);
}

/* ============================================================
   SECTIONS
   ============================================================ */
main {
  padding-top: var(--s8);
  padding-bottom: var(--s9);
}
.section {
  margin-bottom: var(--s9);
}
.section__label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: var(--s3);
}
.section__title {
  margin-bottom: var(--s5);
  padding-bottom: var(--s4);
  border-bottom: 1px solid var(--line);
}
.section__intro {
  max-width: 60ch;
  margin-bottom: var(--s6);
  font-size: 1.05rem;
}

/* ============================================================
   PROBLEM / SOLUTION
   ============================================================ */
.problems {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--s5);
}
.problem {
  padding: var(--s5);
  border-radius: var(--r3);
  border: 1px solid var(--line);
  background: var(--bg-raised);
  transition: border-color var(--dur) var(--ease);
}
.problem:hover {
  border-color: var(--line-strong);
}
.problem__label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: var(--s3);
}
.problem__label--pain { color: var(--warm); }
.problem__label--solve { color: var(--accent-bright); }
.problem__text {
  font-size: 0.95rem;
  color: var(--fg-dim);
  line-height: 1.6;
}

/* ============================================================
   FLOW (How it works)
   ============================================================ */
.flow {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--s4);
  margin-top: var(--s5);
}
.flow__step {
  position: relative;
  padding: var(--s5);
  border-radius: var(--r3);
  border: 1px solid var(--line);
  background: var(--bg-raised);
}
.flow__n {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--accent);
  margin-bottom: var(--s3);
  display: block;
}
.flow__name {
  font-family: var(--font-display);
  font-size: 1.1rem;
  color: var(--chalk);
  margin-bottom: var(--s2);
}
.flow__desc {
  font-size: 0.85rem;
  color: var(--fg-muted);
  line-height: 1.55;
}

.privacy-modes {
  margin-top: var(--s6);
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: var(--s4);
}
.privacy-mode {
  padding: var(--s4) var(--s5);
  border-radius: var(--r2);
  border: 1px solid var(--line);
  background: var(--bg-raised);
}
.privacy-mode__name {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--accent-bright);
  margin-bottom: var(--s2);
}
.privacy-mode__desc {
  font-size: 0.85rem;
  color: var(--fg-dim);
}
.privacy-mode__latency {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--fg-muted);
  margin-top: var(--s2);
}

/* ============================================================
   ARCHITECTURE
   ============================================================ */
.arch {
  background: var(--bg-inset);
  border: 1px solid var(--line-strong);
  border-radius: var(--r3);
  padding: var(--s5) var(--s6);
  overflow-x: auto;
  margin: var(--s5) 0;
}
.arch pre {
  background: transparent;
  border: none;
  padding: 0;
  margin: 0;
  font-size: 12px;
  line-height: 1.55;
  color: var(--fg-dim);
}
.arch pre code { color: inherit; }
.arch__caption {
  margin-top: var(--s4);
  font-size: 0.85rem;
  color: var(--fg-muted);
  font-style: italic;
}
.arch__caption strong {
  color: var(--chalk);
  font-style: normal;
}

/* ============================================================
   USE CASES
   ============================================================ */
.usecases {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: var(--s4);
}
.usecase {
  padding: var(--s5);
  border-radius: var(--r3);
  border: 1px solid var(--line);
  background: var(--bg-raised);
  transition: border-color var(--dur) var(--ease), transform var(--dur) var(--ease);
}
.usecase:hover {
  border-color: var(--line-strong);
  transform: translateY(-1px);
}
.usecase__icon {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: var(--s3);
}
.usecase__title {
  font-family: var(--font-display);
  font-size: 1.1rem;
  color: var(--chalk);
  margin-bottom: var(--s2);
}
.usecase__desc {
  font-size: 0.88rem;
  color: var(--fg-muted);
  line-height: 1.55;
}

/* ============================================================
   PRIMITIVES (cards)
   ============================================================ */
.primitives {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: var(--s4);
}
.primitive {
  padding: var(--s5);
  border-radius: var(--r3);
  border: 1px solid var(--line);
  border-left: 3px solid var(--accent);
  background: var(--bg-raised);
}
.primitive__name {
  font-family: var(--font-mono);
  font-size: 0.88rem;
  color: var(--accent-bright);
  margin-bottom: var(--s2);
}
.primitive__desc {
  font-size: 0.85rem;
  color: var(--fg-dim);
  line-height: 1.55;
}

/* ============================================================
   COMPARISON TABLE
   ============================================================ */
.comparison {
  width: 100%;
  border-collapse: collapse;
  margin-top: var(--s5);
  font-size: 0.88rem;
}
.comparison th,
.comparison td {
  text-align: left;
  padding: var(--s3) var(--s4);
  border-bottom: 1px solid var(--line);
}
.comparison th {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--fg-muted);
  font-weight: 400;
}
.comparison td:first-child {
  font-weight: 500;
  color: var(--chalk);
  white-space: nowrap;
}
.comparison td:last-child {
  color: var(--fg-dim);
}
.comparison tr:last-child td { border-bottom: none; }

/* ============================================================
   STATS
   ============================================================ */
.stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: var(--s4);
  margin-top: var(--s5);
}
.stat {
  text-align: center;
  padding: var(--s5) var(--s4);
  border-radius: var(--r3);
  border: 1px solid var(--line);
  background: var(--bg-raised);
}
.stat__number {
  font-family: var(--font-display);
  font-size: 2rem;
  color: var(--chalk);
  line-height: 1;
  margin-bottom: var(--s2);
}
.stat__label {
  font-size: 0.78rem;
  color: var(--fg-muted);
  font-family: var(--font-mono);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

/* ============================================================
   QUICKSTART
   ============================================================ */
.quickstart { margin: var(--s5) 0; }
.quickstart__steps {
  display: flex;
  flex-direction: column;
  gap: var(--s5);
}
.quickstart__step {
  display: grid;
  grid-template-columns: 36px 1fr;
  gap: var(--s4);
  align-items: start;
}
.quickstart__n {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: var(--accent-soft);
  color: var(--accent-bright);
  font-family: var(--font-mono);
  font-size: 0.82rem;
  font-weight: 600;
  border: 1px solid rgba(91, 138, 90, 0.25);
}
.quickstart__step p {
  margin: 0 0 var(--s2);
  font-size: 0.92rem;
}
.quickstart__step pre { margin: 0; }

/* ============================================================
   LINKS / CARDS
   ============================================================ */
.link-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: var(--s4);
}
.link-card {
  display: flex;
  flex-direction: column;
  gap: var(--s2);
  background: var(--bg-raised);
  border: 1px solid var(--line);
  border-radius: var(--r3);
  padding: var(--s5);
  transition: border-color var(--dur) var(--ease), transform var(--dur) var(--ease);
}
.link-card:hover {
  border-color: var(--line-strong);
  transform: translateY(-1px);
}
.link-card__title {
  font-family: var(--font-display);
  font-size: 1.05rem;
  color: var(--chalk);
}
.link-card__desc {
  font-size: 0.82rem;
  color: var(--fg-muted);
  line-height: 1.5;
}

/* ============================================================
   PAGE HEADER (docs, paper, demo)
   ============================================================ */
.page-header {
  padding: var(--s7) 0 var(--s6);
  border-bottom: 1px solid var(--line);
  margin-bottom: var(--s7);
}
.page-header h1 {
  margin: 0 0 var(--s3);
}
.page-header p {
  color: var(--fg-dim);
  max-width: 60ch;
  font-size: 1.05rem;
  line-height: 1.6;
}

/* ============================================================
   DOCS PAGE
   ============================================================ */
.docs-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--s5);
  margin-top: var(--s5);
}
.docs-section {
  padding: var(--s5);
  border-radius: var(--r3);
  border: 1px solid var(--line);
  background: var(--bg-raised);
}
.docs-section__title {
  font-family: var(--font-display);
  font-size: 1.15rem;
  color: var(--chalk);
  margin-bottom: var(--s3);
}
.docs-section__list {
  display: flex;
  flex-direction: column;
  gap: var(--s2);
}
.docs-section__list a {
  font-size: 0.88rem;
  color: var(--fg-dim);
  padding: var(--s2) 0;
  border-bottom: 1px solid var(--line);
  display: flex;
  align-items: center;
  gap: var(--s2);
  transition: color var(--dur) var(--ease);
}
.docs-section__list a:last-child { border-bottom: none; }
.docs-section__list a:hover { color: var(--accent-bright); }
.docs-section__list a::before {
  content: '\2192';
  font-size: 0.82rem;
  color: var(--fg-faint);
  transition: color var(--dur) var(--ease);
}
.docs-section__list a:hover::before { color: var(--accent); }

/* ============================================================
   PAPER PAGE
   ============================================================ */
.paper-abstract {
  font-size: 1.02rem;
  line-height: 1.7;
  color: var(--fg-dim);
  max-width: 65ch;
  margin-bottom: var(--s6);
}
.paper-download {
  display: inline-flex;
  align-items: center;
  gap: var(--s3);
  padding: var(--s4) var(--s5);
  border-radius: var(--r3);
  border: 1px solid var(--accent);
  background: var(--accent-soft);
  color: var(--accent-bright);
  font-family: var(--font-mono);
  font-size: 0.88rem;
  transition: background var(--dur) var(--ease);
}
.paper-download:hover {
  background: rgba(91, 138, 90, 0.2);
  color: var(--accent-bright);
}
.paper-refs {
  margin-top: var(--s7);
}
.paper-refs li {
  padding: var(--s3) 0;
  border-bottom: 1px solid var(--line);
  font-size: 0.92rem;
  color: var(--fg-dim);
  line-height: 1.6;
}
.paper-refs li:last-child { border-bottom: none; }
.paper-refs li strong {
  color: var(--chalk);
}

/* ============================================================
   DEMO PAGE
   ============================================================ */
.demo-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--s5);
  margin-top: var(--s5);
}
.demo-card {
  padding: var(--s5) var(--s6);
  border-radius: var(--r3);
  border: 1px solid var(--line);
  background: var(--bg-raised);
  transition: border-color var(--dur) var(--ease);
}
.demo-card:hover {
  border-color: var(--line-strong);
}
.demo-card__title {
  font-family: var(--font-display);
  font-size: 1.2rem;
  color: var(--chalk);
  margin-bottom: var(--s3);
}
.demo-card__desc {
  font-size: 0.9rem;
  color: var(--fg-dim);
  line-height: 1.6;
  margin-bottom: var(--s4);
}
.demo-card__features {
  margin-bottom: var(--s4);
}
.demo-card__features li {
  font-size: 0.85rem;
  color: var(--fg-muted);
  padding: var(--s1) 0;
  padding-left: 1.2em;
  position: relative;
}
.demo-card__features li::before {
  content: '\25B8';
  position: absolute;
  left: 0;
  color: var(--accent);
  font-size: 0.7em;
  top: 0.5em;
}
.demo-card__link {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--accent-bright);
  display: inline-flex;
  align-items: center;
  gap: var(--s2);
}
.demo-card__link:hover { color: var(--warm); }

/* ============================================================
   FOOTER
   ============================================================ */
.site-foot {
  border-top: 1px solid var(--line);
  padding: var(--s6) 0 var(--s7);
  margin-top: var(--s8);
}
.site-foot__inner {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 var(--s5);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: baseline;
  gap: var(--s4);
}
.site-foot__left {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--fg-muted);
}
.site-foot__links {
  display: flex;
  gap: var(--s4);
  font-size: 0.82rem;
}
.site-foot__links a {
  color: var(--fg-muted);
}
.site-foot__links a:hover {
  color: var(--accent-bright);
}

/* Legacy footer compat */
.site-foot .row {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 var(--s5);
  display: flex;
  flex-wrap: wrap;
  gap: 8px 24px;
  align-items: baseline;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--fg-muted);
}
.site-foot .row a { color: var(--accent); }

/* ============================================================
   FEATURES GRID (legacy compat for docs page)
   ============================================================ */
.features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--s4);
  margin-top: var(--s5);
}
.feature {
  background: var(--bg-raised);
  border: 1px solid var(--line);
  border-left: 3px solid var(--accent);
  border-radius: var(--r3);
  padding: var(--s5);
  transition: border-color var(--dur) var(--ease), transform var(--dur) var(--ease);
}
.feature:hover {
  border-color: var(--line-strong);
  transform: translateY(-1px);
}
.feature__icon { display: none; } /* Remove emoji icons */
.feature h3 {
  font-family: var(--font-display);
  font-size: 1.1rem;
  color: var(--chalk);
  margin: 0 0 var(--s2);
}
.feature p {
  font-size: 0.88rem;
  color: var(--fg-dim);
  margin: 0;
  line-height: 1.6;
}

/* ============================================================
   LINKS (legacy compat)
   ============================================================ */
.links {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: var(--s4);
  margin-top: var(--s5);
}

/* ============================================================
   PLACEHOLDER (paper page)
   ============================================================ */
.placeholder {
  background: var(--bg-raised);
  border: 1px dashed var(--line-strong);
  border-radius: var(--r3);
  padding: var(--s7) var(--s5);
  text-align: center;
  color: var(--fg-muted);
  font-family: var(--font-mono);
  font-size: 0.88rem;
}
.placeholder__title {
  font-family: var(--font-display);
  font-size: 1.3rem;
  color: var(--fg-dim);
  margin-bottom: var(--s3);
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 768px) {
  .hero { padding: var(--s7) var(--s4) var(--s6); }
  .nav { padding: var(--s3) var(--s4); }
  .nav__tag { display: none; }
  .wrap { padding: 0 var(--s4); }
  .problems { grid-template-columns: 1fr; }
  .flow { grid-template-columns: 1fr 1fr; }
  .usecases { grid-template-columns: 1fr; }
  .primitives { grid-template-columns: 1fr; }
  .stats { grid-template-columns: repeat(2, 1fr); }
  .demo-cards { grid-template-columns: 1fr; }
  .docs-grid { grid-template-columns: 1fr; }
  .privacy-modes { grid-template-columns: 1fr; }
  .comparison { font-size: 0.82rem; }
  .comparison th, .comparison td { padding: var(--s2) var(--s3); }
  .site-foot__inner { flex-direction: column; gap: var(--s3); }
}

@media (max-width: 480px) {
  .flow { grid-template-columns: 1fr; }
  .stats { grid-template-columns: 1fr 1fr; }
  .hero h1 { font-size: 1.8rem; }
  .nav__links { gap: var(--s1); }
  .nav__link { padding: 4px 8px; font-size: 0.75rem; }
}

/* ============================================================
   SCROLL ANIMATIONS (CSS-only)
   ============================================================ */
@media (prefers-reduced-motion: no-preference) {
  .section {
    animation: fadeUp 0.6s var(--ease) both;
  }
  @keyframes fadeUp {
    from {
      opacity: 0;
      transform: translateY(16px);
    }
    to {
      opacity: 1;
      transform: translateY(0);
    }
  }
}

/* ============================================================
   v2 BUFF — deepened green-π identity: a living hero, the verify
   motif, the proof-stage, and the trustless badge. All additive.
   ============================================================ */

/* ---- HERO: a slow drifting aurora + a faint proof lattice ---- */
.hero {
  padding-top: var(--s9);
}
.hero::after {
  content: '';
  position: absolute;
  inset: -20% -10% auto -10%;
  height: 140%;
  background:
    radial-gradient(ellipse 38% 32% at 22% 18%, rgba(122, 171, 111, 0.10), transparent 70%),
    radial-gradient(ellipse 30% 40% at 82% 72%, rgba(196, 146, 69, 0.07), transparent 70%);
  pointer-events: none;
  z-index: 0;
}
@media (prefers-reduced-motion: no-preference) {
  .hero::after { animation: aurora 22s var(--ease) infinite alternate; }
  @keyframes aurora {
    from { transform: translate3d(-2%, -1%, 0) scale(1); opacity: 0.9; }
    to   { transform: translate3d(3%, 2%, 0) scale(1.08); opacity: 1; }
  }
}
.hero__inner { z-index: 2; }

/* a small mono "status line" under the hero CTAs — the live receipt motif */
.hero__pulse {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-top: var(--s5);
  padding: 8px 14px;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  background: rgba(8, 12, 10, 0.5);
  font-family: var(--font-mono);
  font-size: 0.76rem;
  color: var(--fg-dim);
  letter-spacing: 0.02em;
}
.hero__pulse b { color: var(--accent-bright); font-weight: 600; }
.pulse-dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--accent-bright);
  box-shadow: 0 0 0 0 rgba(122, 171, 111, 0.6);
}
@media (prefers-reduced-motion: no-preference) {
  .pulse-dot { animation: ping 1.9s var(--ease) infinite; }
  @keyframes ping {
    0%   { box-shadow: 0 0 0 0 rgba(122, 171, 111, 0.5); }
    70%  { box-shadow: 0 0 0 7px rgba(122, 171, 111, 0); }
    100% { box-shadow: 0 0 0 0 rgba(122, 171, 111, 0); }
  }
}

/* ---- SECTION LABEL: a leading rule for sharper hierarchy ---- */
.section__label {
  display: inline-flex;
  align-items: center;
  gap: 10px;
}
.section__label::before {
  content: '';
  width: 22px; height: 1px;
  background: var(--accent);
  opacity: 0.7;
}

/* ---- CHIP / PILL ---- */
.chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.04em;
  padding: 4px 10px;
  border-radius: 999px;
  border: 1px solid var(--line-strong);
  color: var(--fg-dim);
  background: rgba(8, 12, 10, 0.4);
}
.chip--ok { color: var(--accent-bright); border-color: rgba(122, 171, 111, 0.35); background: var(--accent-soft); }
.chip--warm { color: var(--warm); border-color: rgba(196, 146, 69, 0.3); background: var(--warm-soft); }

/* ============================================================
   THE PROOF STAGE — the light-client centerpiece visual.
   A whole history folds into one proof; the proof rests on a
   named cryptographic floor. CSS-only; legible without JS.
   ============================================================ */
.stage {
  position: relative;
  border-radius: var(--r4);
  border: 1px solid var(--line-strong);
  background:
    radial-gradient(ellipse 60% 80% at 50% 0%, rgba(122, 171, 111, 0.07), transparent 70%),
    var(--bg-inset);
  padding: var(--s7) var(--s6) var(--s6);
  overflow: hidden;
}
.stage__rows {
  display: flex;
  flex-direction: column;
  gap: 6px;
  max-width: 520px;
  margin: 0 auto var(--s5);
}
.stage__turn {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--fg-muted);
  padding: 7px 12px;
  border: 1px solid var(--line);
  border-radius: var(--r2);
  background: var(--bg-raised);
}
.stage__turn .dot { width: 6px; height: 6px; border-radius: 50%; background: var(--accent); flex: none; }
.stage__turn .root { margin-left: auto; color: var(--fg-dim); }
@media (prefers-reduced-motion: no-preference) {
  .stage__turn { animation: foldIn 0.5s var(--ease) both; }
  .stage__turn:nth-child(2) { animation-delay: 0.06s; }
  .stage__turn:nth-child(3) { animation-delay: 0.12s; }
  .stage__turn:nth-child(4) { animation-delay: 0.18s; }
  .stage__turn:nth-child(5) { animation-delay: 0.24s; }
  @keyframes foldIn { from { opacity: 0; transform: translateX(-10px); } to { opacity: 1; transform: none; } }
}
.stage__fold {
  text-align: center;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--accent);
  letter-spacing: 0.08em;
  margin: var(--s3) 0;
}
.stage__proof {
  max-width: 420px;
  margin: 0 auto;
  text-align: center;
  padding: var(--s5);
  border: 1px solid var(--accent);
  border-radius: var(--r3);
  background: var(--accent-soft);
}
.stage__proof .glyph {
  font-family: var(--font-mono);
  font-size: 1.6rem;
  color: var(--accent-bright);
}
.stage__proof .cap { font-size: 0.82rem; color: var(--fg-dim); margin-top: 6px; }
.stage__floor {
  margin: var(--s5) auto 0;
  max-width: 520px;
  text-align: center;
  padding-top: var(--s4);
  border-top: 1px dashed rgba(196, 146, 69, 0.3);
  font-family: var(--font-mono);
  font-size: 0.74rem;
  color: var(--warm);
  line-height: 1.6;
}

/* ============================================================
   TRUSTLESS VERIFY BADGE — shipped on every <name>.dregg.works
   page. The host can't tamper: the served bytes are committed
   on-chain. (Style mirrored inline by verify-badge.js so it is
   self-contained on served pages; kept here for the apex site.)
   ============================================================ */
.dw-badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  padding: 8px 14px;
  border-radius: 999px;
  border: 1px solid var(--line-strong);
  background: rgba(8, 12, 10, 0.7);
  color: var(--fg-dim);
  cursor: pointer;
  transition: border-color var(--dur) var(--ease);
}
.dw-badge:hover { border-color: var(--accent); }
.dw-badge.ok { border-color: rgba(122, 171, 111, 0.5); color: var(--accent-bright); }
.dw-badge.bad { border-color: rgba(217, 102, 63, 0.6); color: var(--danger, #d9663f); }
.dw-badge.checking { color: var(--warm); }
.dw-badge .mk { font-weight: 700; }

/* ============================================================
   dregg.works APEX — the WebOfCells front door cards
   ============================================================ */
.dw-hero {
  position: relative;
  overflow: hidden;
  padding: var(--s9) var(--s5) var(--s7);
  background:
    radial-gradient(ellipse 60% 50% at 50% 0%, rgba(122, 171, 111, 0.08), transparent 70%),
    linear-gradient(180deg, var(--void), var(--canopy));
  text-align: center;
}
.dw-flow {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: var(--s4);
  margin-top: var(--s6);
}
.dw-step {
  position: relative;
  padding: var(--s5);
  border-radius: var(--r3);
  border: 1px solid var(--line);
  background: var(--bg-raised);
  text-align: left;
}
.dw-step__n { font-family: var(--font-mono); font-size: 0.7rem; color: var(--accent); margin-bottom: var(--s2); display: block; }
.dw-step__t { font-family: var(--font-display); font-size: 1.1rem; color: var(--chalk); margin-bottom: var(--s2); }
.dw-step__d { font-size: 0.86rem; color: var(--fg-muted); line-height: 1.55; }

.dw-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: var(--s4);
}
.dw-cell {
  display: flex;
  flex-direction: column;
  gap: var(--s2);
  padding: var(--s5);
  border-radius: var(--r3);
  border: 1px solid var(--line);
  border-left: 3px solid var(--accent);
  background: var(--bg-raised);
  text-decoration: none;
  transition: border-color var(--dur) var(--ease), transform var(--dur) var(--ease);
}
.dw-cell:hover { border-color: var(--accent); transform: translateY(-2px); }
.dw-cell__name { font-family: var(--font-display); font-size: 1.1rem; color: var(--chalk); }
.dw-cell__uri { font-family: var(--font-mono); font-size: 0.72rem; color: var(--accent-bright); word-break: break-all; }
.dw-cell__desc { font-size: 0.84rem; color: var(--fg-muted); line-height: 1.5; }