/* ================================================================
   AGENCY186 — UNIFIED DESIGN SYSTEM
   Two worlds, one structure:
   [data-theme="dark"]  → IBM 5151 × DEC VT220 phosphor CRT
   [data-theme="light"] → engineer's graph-paper journal
   ================================================================ */

/* ----------------------------------------------------------------
   0. MODERN CUSTOM PROPERTIES (@property for animatable vars)
   ---------------------------------------------------------------- */
@property --tilt-rx { syntax: "<angle>"; inherits: false; initial-value: 0deg; }
@property --tilt-ry { syntax: "<angle>"; inherits: false; initial-value: 0deg; }
@property --spot-x  { syntax: "<percentage>"; inherits: false; initial-value: 50%; }
@property --spot-y  { syntax: "<percentage>"; inherits: false; initial-value: 50%; }
@property --sweep-a { syntax: "<angle>"; inherits: false; initial-value: 0deg; }
@property --trace-o { syntax: "<number>"; inherits: false; initial-value: 0; }

/* ----------------------------------------------------------------
   1. RESET
   ---------------------------------------------------------------- */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  font-size: 16px;
  overflow-x: clip;
}
body { overflow-x: clip; }
main { overflow-x: clip; }

img, svg, video { display: block; max-width: 100%; }
button, input, select, textarea { font: inherit; color: inherit; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }

/* ----------------------------------------------------------------
   2. SHARED TOKENS (Fibonacci + timing)
   ---------------------------------------------------------------- */
:root {
  --f2: 2px; --f3: 3px; --f5: 5px; --f8: 8px; --f13: 13px;
  --f21: 21px; --f34: 34px; --f55: 55px; --f89: 89px; --f144: 144px;

  --dur-fast: 180ms;
  --dur-base: 340ms;
  --dur-slow: 620ms;
  --dur-glacial: 1100ms;

  --ease: cubic-bezier(0.19, 1, 0.22, 1);
  --ease-out: cubic-bezier(0.33, 1, 0.68, 1);
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);

  --content-max: 860px;  /* everything — header, footer, guide-layout, breadcrumb, sections */
  --section-max: 860px;
  --header-h: 56px;
  --footer-fn-h: 28px;
}

/* ----------------------------------------------------------------
   3. THEME: DARK (IBM 5151 + VT220)
   ---------------------------------------------------------------- */
[data-theme="dark"] {
  --bg-base:      #0a0e0a;
  --bg-deep:      #060806;
  --bg-raised:    #0f1510;
  --bg-panel:     #101710;

  --phosphor:     #b6ffa8;
  --phosphor-dim: #4a7a42;
  --phosphor-hot: #e8ffd8;
  --phosphor-ghost: rgba(182, 255, 168, 0.12);

  --amber:   #ffb454;
  --alert:   #ff5530;
  --scan:    rgba(0, 0, 0, 0.28);

  --accent:      var(--phosphor);
  --accent-hot:  var(--phosphor-hot);
  --accent-dim:  var(--phosphor-dim);
  --accent-alt:  var(--amber);

  --border-1: 1px solid var(--phosphor-dim);
  --border-2: 1px solid var(--phosphor);

  --font-display: 'VT323', ui-monospace, monospace;
  --font-body:    'IBM Plex Mono', ui-monospace, monospace;
  --font-mono:    'IBM Plex Mono', ui-monospace, monospace;
  --font-scribble:'IBM Plex Mono', ui-monospace, monospace;

  --shadow-card: 0 0 0 1px var(--phosphor-dim), 0 0 24px rgba(182, 255, 168, 0.03);
  --shadow-card-hover: 0 0 0 1px var(--phosphor), 0 0 34px rgba(182, 255, 168, 0.18);

  color-scheme: dark;
}

/* ----------------------------------------------------------------
   4. THEME: LIGHT (Graph Paper Journal)
   ---------------------------------------------------------------- */
[data-theme="light"] {
  --paper:        #f4ead5;
  --paper-shadow: #e8dcc0;
  --paper-hi:     #fbf6e8;
  --paper-edge:   #d8cab0;

  --ink:          #1a1f2e;
  --ink-soft:     #2c3548;
  --pencil:       #6b6558;
  --grid-blue:    #a8c5d6;
  --grid-blue-soft: rgba(168, 197, 214, 0.42);
  --margin-red:   #c44536;
  --highlighter:  #f4b860;
  --annotation:   #2e5d4f;
  --tape:         rgba(252, 240, 190, 0.72);

  --accent:      var(--ink);
  --accent-hot:  var(--margin-red);
  --accent-dim:  var(--pencil);
  --accent-alt:  var(--annotation);

  --border-1: 1.5px solid var(--ink);
  --border-2: 2px solid var(--ink);

  --font-display: 'Kalam', 'Comic Sans MS', cursive;
  --font-body:    'Source Serif 4', 'Lora', Georgia, serif;
  --font-mono:    'JetBrains Mono', ui-monospace, monospace;
  --font-scribble:'Caveat', 'Kalam', cursive;

  --shadow-card: 2px 4px 0 rgba(26, 31, 46, 0.1), 6px 10px 24px rgba(0, 0, 0, 0.08);
  --shadow-card-hover: 3px 6px 0 rgba(26, 31, 46, 0.18), 10px 18px 34px rgba(0, 0, 0, 0.12);

  color-scheme: light;
}

/* ----------------------------------------------------------------
   5. BODY BASE
   ---------------------------------------------------------------- */
body {
  font-family: var(--font-body);
  line-height: 1.55;
  min-height: 100dvh;
  position: relative;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
body { text-rendering: optimizeLegibility; }

[data-theme="dark"] body {
  background: var(--bg-base);
  color: var(--phosphor);
  font-size: 15px;
  font-feature-settings: "calt" 0, "liga" 0, "zero" 1;
}
[data-theme="light"] body {
  background-color: var(--paper);
  color: var(--ink);
  font-size: 17px;
  line-height: 1.65;
}

/* ----------------------------------------------------------------
   6. CRT EFFECTS (dark only)
   ---------------------------------------------------------------- */
[data-theme="dark"] body::before {
  content: "";
  position: fixed; inset: 0;
  pointer-events: none;
  z-index: 9998;
  background: repeating-linear-gradient(to bottom, transparent 0 1px, var(--scan) 1px 2px);
  mix-blend-mode: multiply;
}
[data-theme="dark"] body::after {
  content: "";
  position: fixed; inset: 0;
  pointer-events: none;
  z-index: 9997;
  background: radial-gradient(ellipse at center, transparent 50%, rgba(0, 0, 0, 0.55) 100%);
}
@keyframes crt-flicker {
  0%, 100% { opacity: 1; }
  47% { opacity: 0.985; }
  48% { opacity: 0.995; }
  73% { opacity: 0.988; }
}
[data-theme="dark"] .crt-frame { animation: crt-flicker 7s infinite steps(24); }

.glow {
  text-shadow:
    0 0 1px var(--phosphor-hot),
    0 0 4px rgba(182, 255, 168, 0.55),
    0 0 12px rgba(182, 255, 168, 0.22);
}
[data-theme="light"] .glow { text-shadow: none; }

/* ----------------------------------------------------------------
   7. GRAPH PAPER (light only)
   ---------------------------------------------------------------- */
[data-theme="light"] body {
  background-image:
    linear-gradient(var(--grid-blue) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-blue) 1px, transparent 1px),
    linear-gradient(var(--grid-blue-soft) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-blue-soft) 1px, transparent 1px);
  background-size: 100px 100px, 100px 100px, 20px 20px, 20px 20px;
  background-position: -1px -1px;
  background-attachment: fixed;
}
[data-theme="light"] body::before {
  content: "";
  position: fixed; inset: 0;
  pointer-events: none;
  z-index: 9997;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='240' height='240'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2'/><feColorMatrix values='0 0 0 0 0.4  0 0 0 0 0.3  0 0 0 0 0.1  0 0 0 0.08 0'/></filter><rect width='100%25' height='100%25' filter='url(%23n)'/></svg>");
  mix-blend-mode: multiply;
  opacity: 0.52;
}
/* Red margin line */
[data-theme="light"] body::after {
  content: "";
  position: fixed;
  left: 92px;
  top: 0; bottom: 0;
  width: 1.5px;
  background: var(--margin-red);
  opacity: 0.38;
  pointer-events: none;
  z-index: 1;
}
@media (max-width: 1080px) {
  [data-theme="light"] body::after { left: 28px; }
}

/* ----------------------------------------------------------------
   8. SKIP + SELECTION + SCROLLBAR
   ---------------------------------------------------------------- */
.skip {
  position: absolute;
  left: -9999px;
  top: 0;
  padding: 10px 16px;
  background: var(--accent);
  color: var(--bg-deep, var(--paper));
  z-index: 10000;
}
.skip:focus { left: 12px; top: 12px; }

[data-theme="dark"] ::selection { background: var(--phosphor); color: var(--bg-deep); }
[data-theme="light"] ::selection { background: var(--highlighter); color: var(--ink); }

[data-theme="dark"] ::-webkit-scrollbar { width: 10px; height: 10px; }
[data-theme="dark"] ::-webkit-scrollbar-track { background: var(--bg-deep); }
[data-theme="dark"] ::-webkit-scrollbar-thumb { background: var(--phosphor-dim); }
[data-theme="dark"] ::-webkit-scrollbar-thumb:hover { background: var(--phosphor); }

[data-theme="light"] ::-webkit-scrollbar { width: 10px; height: 10px; }
[data-theme="light"] ::-webkit-scrollbar-track { background: var(--paper); }
[data-theme="light"] ::-webkit-scrollbar-thumb { background: var(--ink); border: 2px solid var(--paper); }
[data-theme="light"] ::-webkit-scrollbar-thumb:hover { background: var(--margin-red); }

/* ----------------------------------------------------------------
   9. HEADER (shared across all pages)
   ---------------------------------------------------------------- */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  height: var(--header-h);
  transition: transform var(--dur-base) var(--ease-out), background var(--dur-base);
}
.site-header.hidden { transform: translateY(-100%); }

.header-inner {
  max-width: var(--content-max);
  height: 100%;
  margin: 0 auto;
  padding: 0 var(--f34);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--f21);
}

[data-theme="dark"] .site-header {
  background: rgba(10, 14, 10, 0.86);
  border-bottom: 1px solid var(--phosphor-dim);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  font-family: var(--font-mono);
}
[data-theme="light"] .site-header {
  background: rgba(244, 234, 213, 0.82);
  border-bottom: 1.5px solid var(--ink);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  font-family: var(--font-display);
}

.brand {
  display: flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
}
.brand-mark {
  display: inline-block;
  width: 20px; height: 20px;
  font-size: 20px;
  line-height: 1;
}
.brand-name {
  font-weight: 700;
  letter-spacing: 0.08em;
  font-size: 15px;
}
[data-theme="dark"] .brand-name { color: var(--phosphor); }
[data-theme="dark"] .brand-mark { color: var(--amber); }
[data-theme="light"] .brand-name {
  color: var(--ink);
  font-family: var(--font-display);
  font-size: 20px;
  letter-spacing: 0;
  transform: rotate(-0.8deg);
}
[data-theme="light"] .brand-mark { color: var(--margin-red); transform: rotate(-4deg); }

.primary-nav ul {
  display: flex;
  gap: var(--f21);
  align-items: center;
}
.primary-nav a {
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  position: relative;
  padding: 4px 2px;
  transition: color var(--dur-fast);
}
[data-theme="dark"] .primary-nav a {
  color: var(--phosphor-dim);
  font-family: var(--font-mono);
}
[data-theme="dark"] .primary-nav a::before { content: "["; opacity: 0; color: var(--phosphor); transition: opacity var(--dur-fast); padding-right: 3px; }
[data-theme="dark"] .primary-nav a::after  { content: "]"; opacity: 0; color: var(--phosphor); transition: opacity var(--dur-fast); padding-left: 3px; }
[data-theme="dark"] .primary-nav a:hover,
[data-theme="dark"] .primary-nav a.active { color: var(--phosphor-hot); }
[data-theme="dark"] .primary-nav a:hover::before,
[data-theme="dark"] .primary-nav a:hover::after,
[data-theme="dark"] .primary-nav a.active::before,
[data-theme="dark"] .primary-nav a.active::after { opacity: 1; }

[data-theme="light"] .primary-nav a {
  color: var(--ink);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 15px;
  text-transform: lowercase;
  padding: 4px 10px;
  background: var(--paper);
  border: 1.5px solid var(--ink);
  border-radius: 4px 9px 0 0;
  margin-bottom: -4px;
}
[data-theme="light"] .primary-nav li:nth-child(1) a { transform: rotate(-0.7deg); }
[data-theme="light"] .primary-nav li:nth-child(2) a { transform: rotate(0.5deg); }
[data-theme="light"] .primary-nav li:nth-child(3) a { transform: rotate(-0.9deg); }
[data-theme="light"] .primary-nav li:nth-child(4) a { transform: rotate(0.3deg); }
[data-theme="light"] .primary-nav li:nth-child(5) a { transform: rotate(-0.4deg); }
[data-theme="light"] .primary-nav li:nth-child(6) a { transform: rotate(0.8deg); }
[data-theme="light"] .primary-nav a:hover,
[data-theme="light"] .primary-nav a.active {
  background: var(--highlighter);
  transform: translateY(-2px) rotate(0deg) !important;
}

/* Nav toggle (mobile) */
.nav-toggle {
  display: none;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 6px;
  flex-direction: column;
  gap: 4px;
}
.nav-toggle span {
  display: block;
  width: 22px; height: 2px;
}
[data-theme="dark"] .nav-toggle span { background: var(--phosphor); }
[data-theme="light"] .nav-toggle span { background: var(--ink); }

/* ----------------------------------------------------------------
   10. THEME TOGGLE
   ---------------------------------------------------------------- */
.theme-toggle {
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 0;
  position: relative;
}
.tgl-dark, .tgl-light { display: none; }

[data-theme="dark"] .tgl-dark {
  display: inline-flex;
  align-items: center;
  gap: 3px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--phosphor);
  padding: 5px 10px;
  border: 1px solid var(--phosphor-dim);
  transition: all var(--dur-fast);
}
[data-theme="dark"] .tgl-dark .dot-on  { color: var(--phosphor-hot); }
[data-theme="dark"] .tgl-dark .dot-off { color: var(--phosphor-dim); opacity: 0.5; }
[data-theme="dark"] .theme-toggle:hover .tgl-dark {
  background: var(--phosphor);
  color: var(--bg-deep);
  border-color: var(--phosphor);
}
[data-theme="dark"] .theme-toggle:hover .dot-on,
[data-theme="dark"] .theme-toggle:hover .dot-off { color: var(--bg-deep); }

[data-theme="light"] .tgl-light {
  display: block;
  position: fixed;
  top: 0;
  right: 72px;
  width: 38px;
  padding: 12px 4px 22px;
  background: linear-gradient(to bottom, #2c3548 0%, #1a1f2e 85%, #0e121c 100%);
  color: var(--paper);
  font-family: var(--font-scribble);
  font-size: 15px;
  line-height: 1.05;
  text-align: center;
  transform-origin: top center;
  transform: rotate(-1deg);
  box-shadow: 2px 3px 12px rgba(0, 0, 0, 0.18);
  cursor: pointer;
  z-index: 101;
  clip-path: polygon(0 0, 100% 0, 100% 96%, 76% 100%, 50% 96%, 24% 100%, 0 96%);
  transition: transform var(--dur-base) var(--ease);
}
[data-theme="light"] .theme-toggle:hover .tgl-light {
  transform: rotate(-2.5deg) translateY(2px);
}
[data-theme="light"] .tgl-light span {
  display: block;
  letter-spacing: 0.02em;
  padding-top: 2px;
}

/* ----------------------------------------------------------------
   11. SCROLL PROGRESS
   ---------------------------------------------------------------- */
.scroll-progress {
  position: fixed;
  top: var(--header-h);
  left: 0;
  height: 2px;
  width: 0;
  z-index: 99;
  transition: width 90ms linear;
  transform-origin: left;
}
[data-theme="dark"] .scroll-progress {
  background: linear-gradient(90deg, var(--phosphor), var(--amber));
  box-shadow: 0 0 8px var(--phosphor);
}
[data-theme="light"] .scroll-progress {
  background: var(--margin-red);
  height: 3px;
}

/* ----------------------------------------------------------------
   12. MAIN LAYOUT
   ---------------------------------------------------------------- */
main {
  position: relative;
  z-index: 2;
  padding-top: var(--header-h);
}

main > section,
.section {
  max-width: var(--section-max);
  margin: 0 auto;
  padding: var(--f144) var(--f55) var(--f89);
  position: relative;
  box-sizing: border-box;
}
@media (max-width: 900px) {
  main > section, .section { padding: var(--f89) var(--f34) var(--f55); }
}
@media (max-width: 560px) {
  main > section, .section { padding: var(--f55) var(--f21) var(--f34); }
}

/* ----------------------------------------------------------------
   13. SHARED HEADINGS
   ---------------------------------------------------------------- */
.section-head-wrap {
  margin-bottom: var(--f55);
  position: relative;
}
.section-head {
  display: inline-block;
  font-size: clamp(26px, 4.4vw, 48px);
  line-height: 1;
  text-wrap: balance;
}
[data-theme="dark"] .section-head {
  font-family: var(--font-display);
  color: var(--phosphor-dim);
  text-transform: uppercase;
  letter-spacing: 0.03em;
}
[data-theme="dark"] .section-head::before { content: "[ "; color: var(--phosphor); }
[data-theme="dark"] .section-head::after  { content: " ]"; color: var(--phosphor); }
[data-theme="dark"] .sh-num  { color: var(--phosphor-hot); }
[data-theme="dark"] .sh-sep  { color: var(--phosphor-dim); padding: 0 0.25ch; }
[data-theme="dark"] .sh-name { color: var(--phosphor); }

[data-theme="light"] .section-head {
  font-family: var(--font-display);
  font-weight: 700;
  color: var(--ink);
  padding: 4px 12px;
  background: linear-gradient(transparent 62%, var(--highlighter) 62%, var(--highlighter) 92%, transparent 92%);
  transform: rotate(-0.6deg);
}
[data-theme="light"] .sh-num {
  color: var(--margin-red);
  font-family: var(--font-scribble);
  font-size: 0.72em;
  transform: rotate(-3deg) translateY(-4px);
  display: inline-block;
  padding-right: 4px;
}
[data-theme="light"] .sh-sep { display: none; }

.section-rule {
  margin-top: var(--f13);
  height: 3px;
  max-width: 560px;
}
[data-theme="dark"] .section-rule {
  background: repeating-linear-gradient(to right, var(--phosphor-dim) 0 8px, transparent 8px 12px);
  height: 4px;
}
[data-theme="light"] .section-rule {
  background: var(--ink);
  height: 2px;
  opacity: 0.75;
  margin-left: 8px;
  transform: rotate(-0.2deg);
}
[data-theme="light"] .section-rule::after {
  content: "";
  display: block;
  height: 1.5px;
  background: var(--ink);
  opacity: 0.35;
  margin-top: 3px;
  width: 70%;
}

.section-sub {
  margin-top: var(--f21);
  max-width: 640px;
  font-size: 17px;
  text-wrap: pretty;
}
[data-theme="dark"] .section-sub {
  font-family: var(--font-mono);
  color: var(--phosphor-dim);
}
[data-theme="dark"] .section-sub::before { content: "> "; color: var(--phosphor); }
[data-theme="light"] .section-sub {
  font-family: var(--font-body);
  font-style: italic;
  color: var(--ink-soft);
}

/* ----------------------------------------------------------------
   14. HERO
   ---------------------------------------------------------------- */
#hero {
  min-height: calc(100dvh - var(--header-h));
  padding-top: var(--f55);
  display: flex;
  flex-direction: column;
  justify-content: center;
  position: relative;
}

.hero-dark, .hero-light { display: none; }

/* DARK HERO */
[data-theme="dark"] .hero-dark { display: block; }
.hero-banner, .hero-banner-2 { display: none; }
.hero-title-crt {
  font-family: var(--font-display);
  font-size: clamp(68px, 14vw, 180px);
  line-height: 0.85;
  color: var(--phosphor-hot);
  letter-spacing: 0.01em;
  text-shadow:
    0 0 2px var(--phosphor-hot),
    0 0 8px rgba(182, 255, 168, 0.75),
    0 0 18px rgba(182, 255, 168, 0.45),
    0 0 38px rgba(182, 255, 168, 0.25);
  margin-bottom: var(--f21);
  text-wrap: balance;
  max-width: 8ch;
}
.hero-subline-crt {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--phosphor-dim);
  text-transform: uppercase;
  letter-spacing: 0.18em;
  margin-bottom: var(--f13);
}
.hero-subline-crt::before { content: "// "; color: var(--phosphor); }

.hero-prompt {
  font-family: var(--font-mono);
  font-size: 15px;
  line-height: 1.75;
  margin-top: var(--f34);
  max-width: 780px;
  color: var(--phosphor);
}
.prompt-line { display: block; }
.prompt-sign  { color: var(--phosphor-hot); font-weight: 600; }
.prompt-colon { color: var(--phosphor-dim); }
.prompt-path  { color: var(--amber); }
.prompt-dollar{ color: var(--phosphor-dim); padding: 0 0.5ch; }
.prompt-out   { display: block; color: var(--phosphor-dim); padding-left: 2ch; }
.prompt-out.motd { color: var(--phosphor-hot); font-weight: 500; }
.blink { animation: blink 1.06s steps(1) infinite; color: var(--phosphor-hot); }
@keyframes blink { 0%, 49% { opacity: 1; } 50%, 100% { opacity: 0; } }

/* LIGHT HERO */
[data-theme="light"] .hero-light { display: block; position: relative; padding: var(--f34) 0 var(--f55); }
.date-stamp {
  display: inline-block;
  font-family: var(--font-scribble);
  font-size: 22px;
  color: var(--margin-red);
  border: 2.5px solid var(--margin-red);
  padding: 6px 18px;
  transform: rotate(2.5deg);
  margin-bottom: var(--f21);
  background: var(--paper-hi);
  box-shadow: 1px 2px 0 rgba(196, 69, 54, 0.15);
}
.paper-label {
  position: absolute;
  top: var(--f34);
  right: 0;
  font-family: var(--font-scribble);
  font-size: 20px;
  color: var(--pencil);
  transform: rotate(2deg);
}
.hero-title-paper {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(58px, 12vw, 156px);
  line-height: 0.86;
  color: var(--ink);
  letter-spacing: -0.02em;
  transform: rotate(-1.2deg);
  margin: var(--f21) 0 var(--f13);
  max-width: 10ch;
  text-wrap: balance;
}
.hero-underline-wrap {
  display: block;
  margin: -10px 0 var(--f21) 6px;
  max-width: 420px;
  color: var(--highlighter);
  line-height: 0;
}
.hero-underline { display: block; width: 100%; height: 14px; }
.hero-tagline-paper {
  font-family: var(--font-body);
  font-size: 21px;
  font-style: italic;
  color: var(--ink-soft);
  max-width: 580px;
  margin-top: var(--f21);
  text-wrap: pretty;
}
.hero-scribble {
  font-family: var(--font-scribble);
  color: var(--annotation);
  font-size: 24px;
  transform: rotate(-1.5deg);
  display: inline-block;
  margin-top: var(--f21);
}

/* Hero stats (shared) */
.hero-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--f21);
  margin-top: var(--f55);
  max-width: 100%;
}
.stat { display: flex; flex-direction: column; gap: 4px; }
.stat-num {
  font-size: clamp(34px, 4.5vw, 62px);
  line-height: 1;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
}
.stat-label { font-size: 12px; text-transform: uppercase; letter-spacing: 0.1em; }

[data-theme="dark"] .hero-stats .stat { border-left: 2px solid var(--phosphor-dim); padding-left: var(--f13); }
[data-theme="dark"] .hero-stats .stat-num {
  font-family: var(--font-mono);
  font-weight: 600;
  color: var(--phosphor-hot);
  font-size: clamp(28px, 3.4vw, 44px);
  letter-spacing: -0.02em;
}
[data-theme="dark"] .hero-stats .stat-label { color: var(--phosphor-dim); font-family: var(--font-mono); }

[data-theme="light"] .hero-stats .stat {
  background: var(--paper-hi);
  padding: var(--f13) var(--f21);
  border: 1.5px solid var(--ink);
  box-shadow: 2px 3px 0 rgba(26, 31, 46, 0.1);
}
[data-theme="light"] .hero-stats .stat:nth-child(1) { transform: rotate(-0.9deg); }
[data-theme="light"] .hero-stats .stat:nth-child(2) { transform: rotate(0.7deg); }
[data-theme="light"] .hero-stats .stat:nth-child(3) { transform: rotate(-1.3deg); }
[data-theme="light"] .hero-stats .stat:nth-child(4) { transform: rotate(0.5deg); }
[data-theme="light"] .hero-stats .stat-num { font-family: var(--font-display); color: var(--ink); font-weight: 700; }
[data-theme="light"] .hero-stats .stat-label { color: var(--pencil); font-family: var(--font-scribble); font-size: 16px; text-transform: lowercase; letter-spacing: 0; }

@media (max-width: 700px) { .hero-stats { grid-template-columns: repeat(2, 1fr); } }

/* Scroll cue */
.hero-scroll-cue {
  display: inline-block;
  margin-top: var(--f55);
  text-decoration: none;
  align-self: flex-start;
  font-size: 13px;
  letter-spacing: 0.1em;
}
.cue-dark, .cue-light { display: none; }
[data-theme="dark"] .cue-dark {
  display: inline;
  font-family: var(--font-mono);
  color: var(--phosphor);
  animation: blink 1.6s steps(2) infinite;
}
[data-theme="light"] .cue-light {
  display: inline;
  font-family: var(--font-scribble);
  color: var(--annotation);
  font-size: 22px;
  text-transform: lowercase;
  letter-spacing: 0;
}

/* ----------------------------------------------------------------
   15. SCALE SECTION
   ---------------------------------------------------------------- */
.scale-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--f34);
}
@media (max-width: 760px) { .scale-grid { grid-template-columns: 1fr; } }

.scale-item {
  padding: var(--f34);
  position: relative;
  overflow: hidden;
}
[data-theme="dark"] .scale-item {
  border: 1px solid var(--phosphor-dim);
  background: var(--bg-deep);
  font-family: var(--font-mono);
}
[data-theme="dark"] .scale-item::before {
  content: "╔══════╗";
  position: absolute;
  top: -10px; left: 20px;
  background: var(--bg-base);
  color: var(--phosphor-dim);
  padding: 0 6px;
  font-size: 11px;
}
[data-theme="dark"] .scale-num {
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: clamp(44px, 6vw, 68px);
  color: var(--phosphor-hot);
  line-height: 0.9;
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.02em;
}
[data-theme="dark"] .scale-label { color: var(--phosphor); text-transform: uppercase; font-size: 13px; letter-spacing: 0.08em; margin-top: 10px; }
[data-theme="dark"] .scale-detail { color: var(--phosphor-dim); font-size: 14px; margin-top: var(--f13); line-height: 1.6; }

[data-theme="light"] .scale-item {
  background: var(--paper-hi);
  border: 1.5px solid var(--ink);
  box-shadow: 3px 4px 0 rgba(26, 31, 46, 0.08);
}
[data-theme="light"] .scale-item:nth-child(1) { transform: rotate(-0.6deg); }
[data-theme="light"] .scale-item:nth-child(2) { transform: rotate(0.8deg); }
[data-theme="light"] .scale-item:nth-child(3) { transform: rotate(-1.1deg); }
[data-theme="light"] .scale-item:nth-child(4) { transform: rotate(0.4deg); }
[data-theme="light"] .scale-num {
  font-family: var(--font-display);
  font-size: clamp(80px, 11vw, 120px);
  color: var(--ink);
  font-weight: 700;
  line-height: 0.9;
  display: inline-block;
  padding: 0 var(--f13);
  position: relative;
  font-variant-numeric: tabular-nums;
}
[data-theme="light"] .scale-num-wrap { position: relative; display: inline-block; }
[data-theme="light"] .scale-num-wrap svg {
  position: absolute;
  inset: -6% -8%;
  width: 116%;
  height: 112%;
  stroke: var(--margin-red);
  stroke-width: 2.5;
  fill: none;
  pointer-events: none;
  stroke-dasharray: 600;
  stroke-dashoffset: 600;
  transition: stroke-dashoffset var(--dur-glacial) var(--ease-out);
}
[data-theme="light"] .scale-item.in .scale-num-wrap svg { stroke-dashoffset: 0; }
[data-theme="light"] .scale-label { font-family: var(--font-scribble); font-size: 22px; color: var(--annotation); margin-top: 8px; }
[data-theme="light"] .scale-detail { font-family: var(--font-body); font-size: 15px; color: var(--ink-soft); margin-top: var(--f13); line-height: 1.55; text-wrap: pretty; }

/* ----------------------------------------------------------------
   16. TILT + SPOTLIGHT (reusable card primitive)
   ---------------------------------------------------------------- */
.tilt {
  transform: perspective(1000px) rotateX(var(--tilt-rx)) rotateY(var(--tilt-ry)) translateZ(0);
  transition: transform 0.55s var(--ease-out), box-shadow 0.45s var(--ease-out), border-color var(--dur-base), filter 0.35s;
  position: relative;
  will-change: transform;
}
.tilt::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: radial-gradient(circle 340px at var(--spot-x) var(--spot-y), rgba(255, 255, 255, 0.18), transparent 50%);
  mix-blend-mode: screen;
  opacity: 0;
  transition: opacity var(--dur-base);
  z-index: 3;
}
.tilt:hover::after { opacity: 1; }

[data-theme="dark"] .tilt:hover {
  filter: brightness(1.08);
  box-shadow:
    0 0 0 1px var(--phosphor),
    0 12px 40px rgba(0, 0, 0, 0.6),
    0 0 48px rgba(182, 255, 168, 0.22),
    inset 0 1px 0 rgba(182, 255, 168, 0.12);
}
[data-theme="light"] .tilt::after {
  background: radial-gradient(circle 360px at var(--spot-x) var(--spot-y), rgba(255, 230, 140, 0.4), transparent 55%);
  mix-blend-mode: multiply;
}
[data-theme="light"] .tilt:hover {
  box-shadow:
    3px 5px 0 rgba(26, 31, 46, 0.14),
    8px 14px 28px rgba(0, 0, 0, 0.18),
    16px 24px 48px rgba(0, 0, 0, 0.12);
}

/* Shine sweep */
.shine { position: relative; overflow: hidden; }
.shine::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(115deg, transparent 40%, rgba(255, 255, 255, 0.25) 50%, transparent 60%);
  transform: translateX(-120%);
  transition: transform 0.9s var(--ease-out);
  pointer-events: none;
  z-index: 2;
}
.shine:hover::before { transform: translateX(120%); }
[data-theme="light"] .shine::before {
  background: linear-gradient(115deg, transparent 40%, rgba(244, 184, 96, 0.42) 50%, transparent 60%);
}

/* ----------------------------------------------------------------
   17. WORK SECTION — projects
   ---------------------------------------------------------------- */
.project {
  margin-bottom: var(--f55);
  position: relative;
}

.project-bar {
  display: flex;
  align-items: center;
  gap: var(--f13);
  padding: var(--f8) var(--f13);
  font-size: 12px;
}
[data-theme="dark"] .project-bar {
  background: var(--bg-raised);
  border: 1px solid var(--phosphor-dim);
  border-bottom: none;
  font-family: var(--font-mono);
}
[data-theme="dark"] .bar-tag { color: var(--amber); font-weight: 600; }
[data-theme="dark"] .bar-path { color: var(--phosphor-dim); flex: 1; }
[data-theme="dark"] .bar-status { color: var(--phosphor-hot); font-weight: 600; }

[data-theme="light"] .project-bar {
  background: var(--paper-hi);
  border: 1.5px solid var(--ink);
  border-bottom: 1px dashed var(--pencil);
  font-family: var(--font-mono);
}
[data-theme="light"] .bar-tag { background: var(--highlighter); padding: 2px 10px; color: var(--ink); font-weight: 700; font-family: var(--font-display); }
[data-theme="light"] .bar-path { color: var(--pencil); flex: 1; font-size: 13px; }
[data-theme="light"] .bar-status { color: var(--annotation); font-weight: 700; font-family: var(--font-display); }

.project-body {
  padding: var(--f34);
  position: relative;
}
[data-theme="dark"] .project-body { background: var(--bg-deep); border: 1px solid var(--phosphor-dim); }
[data-theme="light"] .project-body { background: var(--paper-hi); border: 1.5px solid var(--ink); border-top: none; }

/* Flagship layout */
.flagship .project-body {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: var(--f34);
  align-items: start;
}
@media (max-width: 900px) { .flagship .project-body { grid-template-columns: 1fr; } }

.project-title {
  font-size: clamp(26px, 3.2vw, 42px);
  margin-bottom: var(--f13);
  line-height: 1.1;
  text-wrap: balance;
}
[data-theme="dark"] .project-title { font-family: var(--font-display); color: var(--phosphor-hot); text-transform: uppercase; }
[data-theme="light"] .project-title { font-family: var(--font-display); font-weight: 700; color: var(--ink); transform: rotate(-0.5deg); display: inline-block; }

.project-lead {
  font-size: 16px;
  line-height: 1.65;
  margin-bottom: var(--f21);
  text-wrap: pretty;
}
[data-theme="dark"] .project-lead { color: var(--phosphor); font-family: var(--font-body); }
[data-theme="light"] .project-lead { color: var(--ink-soft); font-family: var(--font-body); }

.project-bullets {
  margin-bottom: var(--f21);
}
.project-bullets li {
  padding: 4px 0 4px 2.2ch;
  position: relative;
  font-size: 15px;
  line-height: 1.6;
}
[data-theme="dark"] .project-bullets li { color: var(--phosphor); font-family: var(--font-mono); }
[data-theme="dark"] .project-bullets li::before { content: "›"; position: absolute; left: 0; color: var(--amber); }
[data-theme="light"] .project-bullets li { color: var(--ink-soft); font-family: var(--font-body); }
[data-theme="light"] .project-bullets li::before { content: "✓"; position: absolute; left: 0; color: var(--annotation); font-family: var(--font-scribble); font-size: 21px; top: 2px; }

.tech-row {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: var(--f21);
}
.tech {
  font-size: 11px;
  padding: 4px 11px;
  letter-spacing: 0.04em;
  font-family: var(--font-mono);
  transition: all 0.22s var(--ease-out);
  cursor: default;
}
[data-theme="dark"] .tech {
  color: var(--phosphor);
  border: 1px solid var(--phosphor-dim);
  background: #0d1510;
  box-shadow: inset 0 1px 0 rgba(182, 255, 168, 0.05);
}
[data-theme="dark"] .tech:hover {
  color: var(--phosphor-hot);
  border-color: var(--phosphor);
  background: #152118;
  box-shadow:
    inset 0 1px 0 rgba(182, 255, 168, 0.15),
    0 0 12px rgba(182, 255, 168, 0.2);
  transform: translateY(-1px);
}
[data-theme="light"] .tech {
  color: var(--ink);
  background: var(--paper);
  border: 1.2px solid var(--ink);
  box-shadow: 1px 2px 0 rgba(26, 31, 46, 0.08);
}
[data-theme="light"] .tech:hover {
  background: var(--highlighter);
  box-shadow: 2px 3px 0 rgba(26, 31, 46, 0.18);
  transform: translateY(-2px);
}
[data-theme="light"] .tech:nth-child(2n) { transform: rotate(-0.6deg); }
[data-theme="light"] .tech:nth-child(3n) { transform: rotate(0.5deg); }
[data-theme="light"] .tech:nth-child(2n):hover,
[data-theme="light"] .tech:nth-child(3n):hover { transform: translateY(-2px) rotate(0deg); }

/* Visual (taped image) */
.project-visual {
  position: relative;
  padding-top: var(--f21);
}
.project-visual img {
  width: 100%;
  display: block;
  border-radius: 2px;
  transition: transform var(--dur-slow) var(--ease-out);
}
[data-theme="dark"] .project-visual img {
  border: 1px solid var(--phosphor-dim);
  filter: grayscale(0.3) brightness(0.82) contrast(1.12) sepia(0.12) hue-rotate(60deg);
  opacity: 0.85;
  mix-blend-mode: screen;
}
[data-theme="light"] .project-visual img {
  border: 1px solid var(--ink);
  box-shadow: 3px 5px 0 rgba(26, 31, 46, 0.12);
  transform: rotate(-0.8deg);
  filter: sepia(0.15) contrast(0.96) brightness(0.98);
}
.flagship:hover .project-visual img { transform: scale(1.02) rotate(-0.4deg); }

.project-caption {
  margin-top: var(--f13);
  font-size: 14px;
}
[data-theme="dark"] .project-caption { color: var(--phosphor-dim); font-family: var(--font-mono); }
[data-theme="dark"] .project-caption::before { content: "// "; }
[data-theme="light"] .project-caption { color: var(--pencil); font-family: var(--font-scribble); font-size: 19px; display: inline-block; transform: rotate(-0.6deg); }

/* Tape */
.tape { display: none; }
[data-theme="light"] .tape {
  display: block;
  position: absolute;
  width: 92px;
  height: 24px;
  background: var(--tape);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.15);
  z-index: 3;
  border-left: 1px dashed rgba(0, 0, 0, 0.12);
  border-right: 1px dashed rgba(0, 0, 0, 0.12);
  transition: transform var(--dur-base) var(--ease-spring);
}
[data-theme="light"] .tape-tl { top: -10px; left: 10px; transform: rotate(-7deg); transform-origin: top left; }
[data-theme="light"] .tape-tr { top: -10px; right: 10px; transform: rotate(6deg); transform-origin: top right; }
[data-theme="light"] .project:hover .tape-tl { transform: rotate(-15deg) translate(-2px, -3px); }

/* Project pair */
.project-pair {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--f34);
  margin-bottom: var(--f55);
}
@media (max-width: 900px) { .project-pair { grid-template-columns: 1fr; } }
.project-pair .project { margin-bottom: 0; }

/* Project grid (tier 3) */
.project-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(290px, 1fr));
  gap: var(--f21);
}
.project-card {
  display: block;
  text-decoration: none;
  padding: var(--f21);
  position: relative;
}
[data-theme="dark"] .project-card {
  background: var(--bg-deep);
  border: 1px solid var(--phosphor-dim);
  color: var(--phosphor);
  font-family: var(--font-mono);
  box-shadow: var(--shadow-card);
}
[data-theme="dark"] .project-card:hover {
  border-color: var(--phosphor);
  box-shadow: var(--shadow-card-hover);
}
[data-theme="dark"] .project-card .card-bar { color: var(--amber); font-size: 11px; margin-bottom: var(--f8); }
[data-theme="dark"] .project-card .card-bar::before { content: "/"; }
[data-theme="dark"] .project-card .card-title { font-family: var(--font-display); font-size: 26px; color: var(--phosphor-hot); line-height: 1.1; margin-bottom: 8px; }
[data-theme="dark"] .project-card .card-desc { color: var(--phosphor-dim); font-size: 13px; line-height: 1.55; margin-bottom: var(--f13); }
[data-theme="dark"] .project-card .card-tech { color: var(--phosphor); font-size: 11px; letter-spacing: 0.06em; }
[data-theme="dark"] .project-card .card-tech::before { content: "STACK: "; color: var(--phosphor-dim); }

[data-theme="light"] .project-card {
  background: var(--paper-hi);
  border: 1.5px solid var(--ink);
  color: var(--ink);
  box-shadow: var(--shadow-card);
}
[data-theme="light"] .project-card:nth-child(1) { transform: rotate(-0.8deg); }
[data-theme="light"] .project-card:nth-child(2) { transform: rotate(0.7deg); }
[data-theme="light"] .project-card:nth-child(3) { transform: rotate(-1.2deg); }
[data-theme="light"] .project-card:nth-child(4) { transform: rotate(0.5deg); }
[data-theme="light"] .project-card:nth-child(5) { transform: rotate(-0.6deg); }
[data-theme="light"] .project-card:nth-child(6) { transform: rotate(1.0deg); }
[data-theme="light"] .project-card:nth-child(7) { transform: rotate(-0.9deg); }
[data-theme="light"] .project-card:nth-child(8) { transform: rotate(0.4deg); }
[data-theme="light"] .project-card:hover {
  box-shadow: var(--shadow-card-hover);
}
[data-theme="light"] .project-card .card-bar { font-family: var(--font-mono); color: var(--pencil); font-size: 11px; margin-bottom: var(--f8); }
[data-theme="light"] .project-card .card-title { font-family: var(--font-display); font-weight: 700; font-size: 24px; color: var(--ink); line-height: 1.1; margin-bottom: 6px; }
[data-theme="light"] .project-card .card-desc { font-family: var(--font-body); color: var(--ink-soft); font-size: 14px; line-height: 1.55; margin-bottom: var(--f13); text-wrap: pretty; }
[data-theme="light"] .project-card .card-tech { font-family: var(--font-scribble); color: var(--annotation); font-size: 18px; }
[data-theme="light"] .project-card .card-tech::before { content: "stack: "; color: var(--pencil); }

/* ----------------------------------------------------------------
   18. SYSTEMS / PIPELINE (sticky scrollytelling)
   ---------------------------------------------------------------- */
#systems { position: relative; }
.pipeline-wrap {
  position: relative;
  min-height: 280vh;
}
.pipeline-sticky {
  position: sticky;
  top: var(--header-h);
  min-height: calc(100dvh - var(--header-h));
  display: flex;
  align-items: center;
  padding: var(--f34) 0;
}
.pipeline {
  width: 100%;
  max-width: 740px;
  margin: 0 auto;
}

.pipe-node {
  display: grid;
  grid-template-columns: 72px 1fr;
  gap: var(--f21);
  padding: var(--f21);
  margin-bottom: var(--f13);
  opacity: 0.35;
  filter: saturate(0.6);
  transition: opacity var(--dur-base), filter var(--dur-base), transform var(--dur-base);
}
.pipe-node.active { opacity: 1; filter: saturate(1); transform: translateX(6px); }

[data-theme="dark"] .pipe-node {
  border: 1px solid var(--phosphor-dim);
  background: var(--bg-deep);
  font-family: var(--font-mono);
}
[data-theme="dark"] .pipe-node.active {
  border-color: var(--phosphor);
  box-shadow: 0 0 24px rgba(182, 255, 168, 0.15);
}
[data-theme="light"] .pipe-node {
  background: var(--paper-hi);
  border: 1.5px solid var(--ink);
  box-shadow: 2px 3px 0 rgba(26, 31, 46, 0.08);
}
[data-theme="light"] .pipe-node:nth-child(2n) { transform: rotate(0.4deg); }
[data-theme="light"] .pipe-node.active {
  transform: translateX(6px) rotate(-0.3deg);
  box-shadow: 4px 6px 0 rgba(196, 69, 54, 0.18);
  border-color: var(--margin-red);
}

.pipe-num { font-size: 40px; line-height: 1; font-weight: 700; font-variant-numeric: tabular-nums; }
[data-theme="dark"] .pipe-num { font-family: var(--font-display); color: var(--phosphor-hot); }
[data-theme="dark"] .pipe-node.active .pipe-num { text-shadow: 0 0 12px var(--phosphor); }
[data-theme="light"] .pipe-num { font-family: var(--font-display); color: var(--margin-red); transform: rotate(-4deg); display: inline-block; }

.pipe-title { font-size: 22px; font-weight: 600; margin-bottom: 4px; }
[data-theme="dark"] .pipe-title { font-family: var(--font-display); color: var(--phosphor); text-transform: uppercase; font-size: 26px; }
[data-theme="light"] .pipe-title { font-family: var(--font-display); font-weight: 700; color: var(--ink); }

.pipe-desc { font-size: 14px; line-height: 1.55; }
[data-theme="dark"] .pipe-desc { color: var(--phosphor-dim); }
[data-theme="light"] .pipe-desc { color: var(--ink-soft); font-family: var(--font-body); font-size: 15px; }

.pipeline-caption {
  text-align: center;
  margin-top: var(--f34);
  font-size: 15px;
  max-width: 580px;
  margin-left: auto;
  margin-right: auto;
}
[data-theme="dark"] .pipeline-caption { color: var(--phosphor-dim); font-family: var(--font-mono); }
[data-theme="dark"] .pipeline-caption::before { content: "// "; }
[data-theme="light"] .pipeline-caption { color: var(--ink-soft); font-family: var(--font-body); font-style: italic; }

/* Systems CTA */
.systems-cta {
  text-align: center;
  margin-top: var(--f55);
}

/* ----------------------------------------------------------------
   19. ABOUT
   ---------------------------------------------------------------- */
.about-grid {
  display: grid;
  grid-template-columns: 320px 1fr;
  gap: var(--f55);
  align-items: start;
}
@media (max-width: 900px) { .about-grid { grid-template-columns: 1fr; } }

.about-side { position: sticky; top: calc(var(--header-h) + var(--f34)); }
@media (max-width: 900px) { .about-side { position: static; } }

.about-photo {
  position: relative;
  width: 100%;
  aspect-ratio: 4 / 5;
  margin-bottom: var(--f21);
  overflow: hidden;
}
[data-theme="dark"] .about-photo { border: 1px solid var(--phosphor-dim); background: var(--bg-raised); }
[data-theme="light"] .about-photo {
  background: var(--paper-hi);
  border: 1.5px solid var(--ink);
  box-shadow: 3px 5px 0 rgba(26, 31, 46, 0.12);
  transform: rotate(-1.5deg);
}
.about-photo img { width: 100%; height: 100%; object-fit: cover; }
[data-theme="dark"] .about-photo img { filter: grayscale(0.4) brightness(0.8) contrast(1.15) sepia(0.15) hue-rotate(50deg); opacity: 0.8; mix-blend-mode: screen; }
[data-theme="light"] .about-photo img { filter: sepia(0.2) contrast(0.95) saturate(0.9); }

.photo-caption {
  position: absolute;
  bottom: 8px; left: 0; right: 0;
  text-align: center;
  font-size: 14px;
  padding: 4px;
}
[data-theme="dark"] .photo-caption { color: var(--phosphor); background: rgba(10, 14, 10, 0.8); font-family: var(--font-mono); }
[data-theme="light"] .photo-caption { color: var(--ink); font-family: var(--font-scribble); font-size: 19px; background: rgba(251, 246, 232, 0.8); }

.about-meta { display: flex; flex-direction: column; gap: 6px; }
.meta-row { display: flex; gap: var(--f13); font-size: 12px; padding: 4px 0; }
.meta-key { min-width: 64px; opacity: 0.65; letter-spacing: 0.06em; }
[data-theme="dark"] .meta-row { font-family: var(--font-mono); border-bottom: 1px dashed var(--phosphor-dim); }
[data-theme="dark"] .meta-key { color: var(--phosphor-dim); }
[data-theme="dark"] .meta-val { color: var(--phosphor); }
[data-theme="light"] .meta-row { font-family: var(--font-mono); border-bottom: 1px dashed var(--pencil); }
[data-theme="light"] .meta-key { color: var(--pencil); }
[data-theme="light"] .meta-val { color: var(--ink); }

.about-story p {
  font-size: 18px;
  line-height: 1.75;
  margin-bottom: var(--f21);
  max-width: 62ch;
  text-wrap: pretty;
}
[data-theme="dark"] .about-story p { color: var(--phosphor); font-family: var(--font-body); }
[data-theme="light"] .about-story p { color: var(--ink); font-family: var(--font-body); }

.about-quote {
  margin-top: var(--f34);
  padding: var(--f21) var(--f34);
  font-size: 26px;
  line-height: 1.35;
  max-width: 62ch;
  position: relative;
  text-wrap: balance;
}
[data-theme="dark"] .about-quote {
  font-family: var(--font-display);
  color: var(--phosphor-hot);
  border-left: 3px solid var(--amber);
  background: var(--bg-raised);
}
[data-theme="dark"] .about-quote::before { content: '"'; color: var(--amber); }
[data-theme="dark"] .about-quote::after  { content: '"'; color: var(--amber); }
[data-theme="light"] .about-quote {
  font-family: var(--font-display);
  font-weight: 700;
  color: var(--ink);
  transform: rotate(-0.6deg);
  padding-left: var(--f55);
}
[data-theme="light"] .about-quote::before {
  content: '"';
  position: absolute;
  left: 0; top: -20px;
  font-size: 94px;
  color: var(--margin-red);
  line-height: 1;
}

/* ----------------------------------------------------------------
   20. CODE SHOWCASE
   ---------------------------------------------------------------- */
.code-tabs {
  display: flex;
  flex-wrap: wrap;
}
.code-tab {
  background: transparent;
  border: none;
  font-size: 13px;
  padding: var(--f13) var(--f21);
  cursor: pointer;
  font-family: var(--font-mono);
  transition: all var(--dur-fast);
}
[data-theme="dark"] .code-tab {
  color: var(--phosphor-dim);
  border: 1px solid var(--phosphor-dim);
  border-right: none;
  background: var(--bg-deep);
}
[data-theme="dark"] .code-tab:last-child { border-right: 1px solid var(--phosphor-dim); }
[data-theme="dark"] .code-tab:hover { color: var(--phosphor); }
[data-theme="dark"] .code-tab.active { background: var(--phosphor); color: var(--bg-deep); }

[data-theme="light"] .code-tab {
  color: var(--ink);
  background: var(--paper);
  border: 1.5px solid var(--ink);
  border-right: none;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 15px;
}
[data-theme="light"] .code-tab:last-child { border-right: 1.5px solid var(--ink); }
[data-theme="light"] .code-tab:hover { background: var(--paper-hi); }
[data-theme="light"] .code-tab.active { background: var(--highlighter); }

.code-window {
  position: relative;
  overflow: hidden;
}
[data-theme="dark"] .code-window { border: 1px solid var(--phosphor-dim); background: var(--bg-deep); }
[data-theme="light"] .code-window {
  border: 1.5px solid var(--ink);
  background: var(--paper-hi);
  box-shadow: 3px 5px 0 rgba(26, 31, 46, 0.1);
}

.code-bar {
  display: flex;
  align-items: center;
  gap: var(--f8);
  padding: var(--f8) var(--f13);
}
[data-theme="dark"] .code-bar { background: var(--bg-raised); border-bottom: 1px solid var(--phosphor-dim); }
[data-theme="light"] .code-bar { background: var(--paper); border-bottom: 1px dashed var(--pencil); }

.bar-dot { display: inline-block; width: 8px; height: 8px; border-radius: 2px; }
[data-theme="dark"] .bar-dot { background: var(--phosphor-dim); }
[data-theme="light"] .bar-dot { background: var(--pencil); }

.code-filepath { font-family: var(--font-mono); font-size: 11px; margin-left: var(--f8); }
[data-theme="dark"] .code-filepath { color: var(--phosphor-dim); }
[data-theme="light"] .code-filepath { color: var(--pencil); }

.code-panel { display: none; padding: var(--f21) var(--f34); }
.code-panel.active { display: block; animation: fade-in var(--dur-base); }
@keyframes fade-in { from { opacity: 0; } to { opacity: 1; } }

.code-panel pre {
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.75;
  white-space: pre-wrap;
  overflow-x: auto;
}

[data-theme="dark"] .code-panel pre { color: var(--phosphor); }
[data-theme="dark"] .kw  { color: var(--amber); }
[data-theme="dark"] .fn  { color: var(--phosphor-hot); }
[data-theme="dark"] .str { color: var(--phosphor-hot); }
[data-theme="dark"] .cm  { color: var(--phosphor-dim); font-style: italic; }
[data-theme="dark"] .num { color: var(--amber); }

[data-theme="light"] .code-panel pre { color: var(--ink); }
[data-theme="light"] .kw  { color: var(--margin-red); font-weight: 700; }
[data-theme="light"] .fn  { color: var(--annotation); font-weight: 700; }
[data-theme="light"] .str { color: #8a5a00; }
[data-theme="light"] .cm  { color: var(--pencil); font-style: italic; }
[data-theme="light"] .num { color: var(--margin-red); }

/* ----------------------------------------------------------------
   21. CONTACT
   ---------------------------------------------------------------- */
.contact-form {
  max-width: 700px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--f21);
  padding: var(--f34);
}
[data-theme="dark"] .contact-form {
  background: var(--bg-deep);
  border: 1px solid var(--phosphor-dim);
  font-family: var(--font-mono);
}
[data-theme="light"] .contact-form {
  background: var(--paper-hi);
  border: 1.5px solid var(--ink);
  box-shadow: 3px 5px 0 rgba(26, 31, 46, 0.1);
}

.form-field { display: flex; flex-direction: column; gap: 6px; }
.form-field-full { grid-column: 1 / -1; }
.form-field label {
  font-size: 12px;
  letter-spacing: 0.08em;
  font-family: var(--font-mono);
}
[data-theme="dark"] .form-field label { color: var(--phosphor-dim); }
[data-theme="dark"] .fl-arrow { color: var(--phosphor); padding-right: 4px; }
[data-theme="light"] .form-field label { color: var(--pencil); font-family: var(--font-scribble); font-size: 19px; letter-spacing: 0; }
[data-theme="light"] .fl-arrow { color: var(--margin-red); padding-right: 4px; font-weight: 700; }

.form-field input,
.form-field select,
.form-field textarea {
  background: transparent;
  border: none;
  font-size: 15px;
  padding: 8px 2px;
  font-family: inherit;
  outline: none;
  transition: all var(--dur-fast);
}
[data-theme="dark"] .form-field input,
[data-theme="dark"] .form-field select,
[data-theme="dark"] .form-field textarea {
  background: var(--bg-raised);
  border: 1px solid var(--phosphor-dim);
  border-left: 2px solid var(--phosphor-dim);
  color: var(--phosphor-hot);
  padding: 10px 12px;
}
[data-theme="dark"] .form-field input:focus,
[data-theme="dark"] .form-field select:focus,
[data-theme="dark"] .form-field textarea:focus {
  border-color: var(--phosphor);
  border-left-color: var(--amber);
  box-shadow: 0 0 8px rgba(182, 255, 168, 0.15);
}
[data-theme="light"] .form-field input,
[data-theme="light"] .form-field select,
[data-theme="light"] .form-field textarea {
  border-bottom: 1.5px solid var(--ink);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 17px;
  padding: 6px 2px;
}
[data-theme="light"] .form-field input:focus,
[data-theme="light"] .form-field select:focus,
[data-theme="light"] .form-field textarea:focus {
  border-bottom-color: var(--margin-red);
  border-bottom-width: 2.5px;
  font-family: var(--font-scribble);
  font-size: 22px;
}
.form-field textarea { resize: vertical; min-height: 120px; }

.form-actions { grid-column: 1 / -1; }

/* Button (shared) */
.btn {
  display: inline-block;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 10px 22px;
  text-decoration: none;
  position: relative;
  transition: all var(--dur-fast);
}
.btn-d, .btn-l { display: none; }
[data-theme="dark"] .btn {
  font-family: var(--font-mono);
  color: var(--phosphor);
  border: 1px solid var(--phosphor);
  font-size: 13px;
  letter-spacing: 0.1em;
}
[data-theme="dark"] .btn-d { display: inline; }
[data-theme="dark"] .btn:hover {
  background: var(--phosphor);
  color: var(--bg-deep);
  box-shadow: 0 0 18px rgba(182, 255, 168, 0.3);
}
[data-theme="light"] .btn {
  font-family: var(--font-display);
  font-weight: 700;
  color: var(--ink);
  font-size: 20px;
  padding: 8px 20px;
}
[data-theme="light"] .btn-l { display: inline; position: relative; z-index: 1; }
[data-theme="light"] .btn::before {
  content: "";
  position: absolute;
  inset: -4px;
  background: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 200 60' preserveAspectRatio='none'><ellipse cx='100' cy='30' rx='92' ry='24' fill='none' stroke='%231a1f2e' stroke-width='2.2' transform='rotate(-1 100 30)'/></svg>") no-repeat center/100% 100%;
  pointer-events: none;
}
[data-theme="light"] .btn:hover {
  color: var(--margin-red);
  transform: rotate(-1deg);
}

/* Form status */
.form-success, .form-error {
  grid-column: 1 / -1;
  padding: var(--f13);
  font-size: 14px;
  display: none;
}
.form-success.show, .form-error.show { display: block; }
[data-theme="dark"] .form-success { color: var(--phosphor-hot); font-family: var(--font-mono); border-left: 2px solid var(--phosphor); padding-left: var(--f13); }
[data-theme="dark"] .form-error { color: var(--alert); font-family: var(--font-mono); border-left: 2px solid var(--alert); padding-left: var(--f13); }
[data-theme="light"] .form-success { color: var(--annotation); font-family: var(--font-scribble); font-size: 22px; }
[data-theme="light"] .form-error { color: var(--margin-red); font-family: var(--font-scribble); font-size: 22px; }

@media (max-width: 640px) { .contact-form { grid-template-columns: 1fr; } }

/* ----------------------------------------------------------------
   22. FOOTER
   ---------------------------------------------------------------- */
.site-footer {
  max-width: var(--content-max);
  margin: var(--f89) auto 0;
  padding: var(--f34) var(--f89) var(--f55);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--f21);
  flex-wrap: wrap;
  font-size: 13px;
}
[data-theme="dark"] .site-footer {
  border-top: 1px solid var(--phosphor-dim);
  color: var(--phosphor-dim);
  font-family: var(--font-mono);
}
[data-theme="dark"] .foot-brand { color: var(--phosphor); font-weight: 600; }
[data-theme="dark"] .site-footer a { color: var(--phosphor); }
[data-theme="dark"] .site-footer a:hover { color: var(--phosphor-hot); text-decoration: underline; }

[data-theme="light"] .site-footer {
  border-top: 2px dashed var(--ink);
  color: var(--pencil);
  font-family: var(--font-mono);
}
[data-theme="light"] .foot-brand { color: var(--ink); font-family: var(--font-display); font-weight: 700; font-size: 20px; }
[data-theme="light"] .site-footer a { color: var(--ink); text-decoration: underline; text-decoration-color: var(--margin-red); }
[data-theme="light"] .site-footer a:hover { color: var(--margin-red); }

.foot-left, .foot-right { display: flex; gap: var(--f21); align-items: center; flex-wrap: wrap; }

/* Function key bar (dark only) */
.fn-bar {
  display: none;
  position: fixed;
  bottom: 0; left: 0; right: 0;
  z-index: 99;
  padding: 4px var(--f21);
  font-size: 11px;
  gap: var(--f21);
  justify-content: flex-start;
  overflow-x: auto;
  white-space: nowrap;
  height: var(--footer-fn-h);
  align-items: center;
}
[data-theme="dark"] .fn-bar {
  display: flex;
  background: var(--phosphor);
  color: var(--bg-deep);
  font-family: var(--font-mono);
}
[data-theme="dark"] .fn-bar kbd {
  background: var(--bg-deep);
  color: var(--phosphor);
  padding: 1px 6px;
  font-family: inherit;
  font-weight: 600;
  margin-right: 4px;
}
[data-theme="dark"] body { padding-bottom: var(--footer-fn-h); }

@media (max-width: 640px) {
  [data-theme="dark"] .fn-bar { font-size: 10px; padding: 3px var(--f13); gap: var(--f13); }
}

/* ----------------------------------------------------------------
   22.5. INTERFERENCE PATTERN ON WHITE SURFACES (light mode only)
   Paper/card backgrounds get subtle hatching + noise
   ---------------------------------------------------------------- */
[data-theme="light"] {
  --paper-noise: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='200' height='200'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='1.1' numOctaves='2' seed='7'/><feColorMatrix values='0 0 0 0 0.42  0 0 0 0 0.35  0 0 0 0 0.18  0 0 0 0.11 0'/></filter><rect width='100%25' height='100%25' filter='url(%23n)'/></svg>");
  --paper-hatch: repeating-linear-gradient(
    45deg,
    transparent 0 3px,
    rgba(168, 197, 214, 0.09) 3px 4px
  );
}

/* Apply the interference pattern to EVERY paper-surface element */
[data-theme="light"] :is(
  .project-body,
  .project-card,
  .scale-item,
  .contact-form,
  .code-window,
  .pipe-node,
  .about-photo,
  .hero-stats .stat,
  .guide-sidebar,
  .tier-card,
  blockquote,
  .guide-content blockquote,
  .feature-card
) {
  background-color: var(--paper-hi);
  background-image: var(--paper-noise), var(--paper-hatch);
  background-size: 200px 200px, auto;
  background-blend-mode: multiply, normal;
}

/* Code blocks and inputs get a slightly different hatch (finer) */
[data-theme="light"] :is(
  .guide-content pre,
  .code-panel,
  .form-field input,
  .form-field select,
  .form-field textarea,
  .guide-content code,
  .tech
) {
  background-color: var(--paper-hi);
  background-image:
    url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='120' height='120'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='1.6' numOctaves='2' seed='12'/><feColorMatrix values='0 0 0 0 0.42  0 0 0 0 0.35  0 0 0 0 0.18  0 0 0 0.09 0'/></filter><rect width='100%25' height='100%25' filter='url(%23n)'/></svg>"),
    repeating-linear-gradient(-45deg, transparent 0 4px, rgba(180, 150, 80, 0.04) 4px 5px);
  background-size: 120px 120px, auto;
  background-blend-mode: multiply, normal;
}

/* Dark mode: cards and panels all get opaque backgrounds (no see-through) */
[data-theme="dark"] :is(
  .project-body,
  .project-card,
  .scale-item,
  .contact-form,
  .code-window,
  .pipe-node,
  .about-photo,
  .hero-stats .stat,
  .guide-sidebar,
  .code-panel,
  .guide-content pre,
  .guide-content blockquote
) {
  background-color: var(--bg-deep);
  background-image:
    repeating-linear-gradient(to bottom, transparent 0 2px, rgba(182, 255, 168, 0.02) 2px 3px);
}

/* Tables: alternating row colors + opaque backgrounds */
.guide-content table {
  background-color: var(--bg-deep, var(--paper-hi));
}
[data-theme="dark"] .guide-content table {
  background-color: var(--bg-deep);
  border: 1px solid var(--phosphor-dim);
}
[data-theme="dark"] .guide-content tbody tr:nth-child(odd) {
  background: rgba(182, 255, 168, 0.035);
}
[data-theme="dark"] .guide-content tbody tr:nth-child(even) {
  background: rgba(0, 0, 0, 0.25);
}
[data-theme="dark"] .guide-content thead {
  background: var(--bg-raised);
}
[data-theme="light"] .guide-content table {
  background-color: var(--paper-hi);
  border: 1.5px solid var(--ink);
}
[data-theme="light"] .guide-content tbody tr:nth-child(odd) {
  background: rgba(168, 197, 214, 0.18);
}
[data-theme="light"] .guide-content tbody tr:nth-child(even) {
  background: rgba(244, 234, 213, 0.8);
}
[data-theme="light"] .guide-content thead {
  background: var(--highlighter);
}
[data-theme="light"] .guide-content thead th {
  color: var(--ink);
}

/* Tables must scroll horizontally on small screens */
.guide-content table {
  display: block;
  max-width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}
@media (min-width: 700px) {
  .guide-content table { display: table; }
}

/* ----------------------------------------------------------------
   22.9. ATMOSPHERIC BACKGROUND PHOTOS (fixed, behind content)
   They appear behind the background — scroll-locked, heavily tinted.
   ---------------------------------------------------------------- */
.bg-photo-layer {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}
.bg-photo {
  position: absolute;
  inset: 0;
  background-position: center;
  background-size: cover;
  background-repeat: no-repeat;
  opacity: 0;
  transition: opacity 1.6s var(--ease-out);
}
.bg-photo.active { opacity: 1; }

[data-theme="dark"] .bg-photo {
  filter: grayscale(0.8) brightness(0.32) contrast(1.15) sepia(0.35) hue-rotate(60deg);
  mix-blend-mode: screen;
}
[data-theme="dark"] .bg-photo-layer::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at center, rgba(10,14,10,0.55) 0%, rgba(10,14,10,0.88) 70%, rgba(10,14,10,0.96) 100%),
    repeating-linear-gradient(to bottom, transparent 0 2px, rgba(0,0,0,0.18) 2px 3px);
  pointer-events: none;
}

[data-theme="light"] .bg-photo {
  filter: sepia(0.35) contrast(0.85) saturate(0.6) brightness(1.05);
  opacity: 0;
}
[data-theme="light"] .bg-photo.active { opacity: 0.24; }
[data-theme="light"] .bg-photo-layer::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at center, rgba(244,234,213,0.55) 0%, rgba(244,234,213,0.82) 75%, rgba(244,234,213,0.92) 100%);
  pointer-events: none;
}

/* Ensure main content sits above the photo layer */
.site-header, main, .site-footer, .fn-bar, .scroll-progress, .breadcrumb, .guide-layout {
  position: relative;
  z-index: 2;
}

/* ----------------------------------------------------------------
   22.95. CARD THUMBNAILS
   ---------------------------------------------------------------- */
.card-thumb {
  display: block;
  width: calc(100% + var(--f34) + var(--f34));
  margin: calc(var(--f21) * -1) calc(var(--f21) * -1) var(--f13);
  aspect-ratio: 16 / 9;
  object-fit: cover;
}
[data-theme="dark"] .card-thumb {
  filter: grayscale(0.35) brightness(0.75) contrast(1.15) sepia(0.18) hue-rotate(55deg);
  border-bottom: 1px solid var(--phosphor-dim);
  mix-blend-mode: screen;
  opacity: 0.9;
}
[data-theme="light"] .card-thumb {
  filter: sepia(0.15) contrast(0.95) saturate(0.92);
  border-bottom: 1.5px solid var(--ink);
}

/* ----------------------------------------------------------------
   23. REVEAL (js-ready safety pattern)
   ---------------------------------------------------------------- */
/* Default: everything visible. No FOUC, no blackout if JS fails. */
[data-reveal] { opacity: 1; }

/* Only hide once JS has initialized */
.js-ready [data-reveal] {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.65s var(--ease-out) var(--delay, 0s),
              transform 0.65s var(--ease-out) var(--delay, 0s);
  will-change: opacity, transform;
}
.js-ready [data-reveal-l] { transform: translateX(-28px); }
.js-ready [data-reveal-r] { transform: translateX(28px); }
.js-ready [data-reveal].in,
.js-ready [data-reveal-l].in,
.js-ready [data-reveal-r].in {
  opacity: 1;
  transform: none;
}

/* Emergency fallback: if any JS error fires, force everything visible. */
.reveal-fallback [data-reveal],
.reveal-fallback [data-reveal-l],
.reveal-fallback [data-reveal-r] {
  opacity: 1 !important;
  transform: none !important;
}

/* ----------------------------------------------------------------
   24. SCROLL-DRIVEN ANIMATIONS (progressive enhancement)
   ---------------------------------------------------------------- */
@supports (animation-timeline: view()) {
  @keyframes sd-reveal {
    from { opacity: 0; transform: translateY(34px); }
    to   { opacity: 1; transform: none; }
  }
  /* If browser supports scroll-driven, we can rely on it entirely. */
  .js-ready [data-reveal-sd] {
    opacity: 0;
    animation: sd-reveal linear both;
    animation-timeline: view();
    animation-range: entry 10% cover 40%;
  }
}

/* ----------------------------------------------------------------
   25. VIEW TRANSITIONS (theme toggle)
   ---------------------------------------------------------------- */
::view-transition-old(root),
::view-transition-new(root) {
  animation: none;
  mix-blend-mode: normal;
}
::view-transition-old(root) { z-index: 1; }
::view-transition-new(root) { z-index: 2; }

/* ----------------------------------------------------------------
   26. CUSTOM CURSOR (desktop + motion only)
   ---------------------------------------------------------------- */
.custom-cursor {
  position: fixed;
  top: 0; left: 0;
  width: 12px; height: 18px;
  pointer-events: none;
  z-index: 9999;
  mix-blend-mode: difference;
  display: none;
  will-change: transform;
}
@media (hover: hover) and (pointer: fine) {
  .custom-cursor.on { display: block; }
}
[data-theme="dark"] .custom-cursor { background: var(--phosphor); box-shadow: 0 0 8px var(--phosphor); }
[data-theme="light"] .custom-cursor {
  background: var(--ink);
  width: 4px; height: 4px;
  border-radius: 50%;
  mix-blend-mode: normal;
}

/* ----------------------------------------------------------------
   27. BREADCRUMB (for sub-pages)
   ---------------------------------------------------------------- */
.breadcrumb {
  max-width: var(--content-max);
  margin: calc(var(--header-h) + var(--f21)) auto var(--f13);
  padding: 0 var(--f89);
  font-size: 13px;
  font-family: var(--font-mono);
  display: flex;
  align-items: center;
  gap: var(--f8);
}
@media (max-width: 1100px) { .breadcrumb { padding: 0 var(--f55); } }
@media (max-width: 900px) { .breadcrumb { padding: 0 var(--f34); } }
@media (max-width: 560px) { .breadcrumb { padding: 0 var(--f21); } }
[data-theme="dark"] .breadcrumb { color: var(--phosphor-dim); }
[data-theme="dark"] .breadcrumb a { color: var(--phosphor); }
[data-theme="dark"] .breadcrumb a:hover { color: var(--phosphor-hot); }
[data-theme="dark"] .breadcrumb::before { content: ">"; color: var(--phosphor); }
[data-theme="dark"] .breadcrumb .sep { color: var(--phosphor-dim); }
[data-theme="light"] .breadcrumb { color: var(--pencil); font-family: var(--font-scribble); font-size: 17px; }
[data-theme="light"] .breadcrumb a { color: var(--ink); text-decoration: underline; text-decoration-color: var(--margin-red); }
[data-theme="light"] .breadcrumb .sep { color: var(--margin-red); }

/* Guide sidebar */
.guide-layout {
  max-width: var(--content-max);
  margin: 0 auto;
  padding: var(--f21) var(--f55) var(--f89);
  display: grid;
  grid-template-columns: 170px 1fr;
  gap: var(--f34);
}
@media (max-width: 900px) { .guide-layout { grid-template-columns: 1fr; padding: var(--f21) var(--f34) var(--f55); } }

.guide-sidebar {
  position: sticky;
  top: calc(var(--header-h) + var(--f34));
  align-self: start;
  padding: var(--f21);
  font-size: 14px;
  max-height: calc(100dvh - var(--header-h) - var(--f55));
  overflow-y: auto;
}
@media (max-width: 900px) { .guide-sidebar { position: static; max-height: none; } }
[data-theme="dark"] .guide-sidebar { border: 1px solid var(--phosphor-dim); background: var(--bg-deep); font-family: var(--font-mono); }
[data-theme="light"] .guide-sidebar { background: var(--paper-hi); border: 1.5px solid var(--ink); box-shadow: 2px 3px 0 rgba(26, 31, 46, 0.08); }

.guide-sidebar h3 {
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: var(--f13);
  padding-bottom: var(--f8);
}
[data-theme="dark"] .guide-sidebar h3 { color: var(--phosphor-dim); border-bottom: 1px dashed var(--phosphor-dim); }
[data-theme="light"] .guide-sidebar h3 { color: var(--pencil); border-bottom: 1px dashed var(--pencil); }

.guide-sidebar ul li a {
  display: block;
  padding: 6px 8px;
  font-size: 13px;
  transition: all var(--dur-fast);
}
[data-theme="dark"] .guide-sidebar ul li a { color: var(--phosphor); font-family: var(--font-mono); }
[data-theme="dark"] .guide-sidebar ul li a:hover { background: var(--phosphor-ghost); }
[data-theme="dark"] .guide-sidebar ul li a.current { background: var(--phosphor); color: var(--bg-deep); }
[data-theme="dark"] .guide-sidebar ul li a.current::before { content: "› "; }
[data-theme="light"] .guide-sidebar ul li a { color: var(--ink); font-family: var(--font-display); font-weight: 700; font-size: 16px; }
[data-theme="light"] .guide-sidebar ul li a:hover { background: var(--paper); }
[data-theme="light"] .guide-sidebar ul li a.current { background: var(--highlighter); }
[data-theme="light"] .guide-sidebar ul li a.current::before { content: "✎ "; color: var(--margin-red); }

.guide-content {
  min-width: 0;
}
.guide-content h1 {
  font-size: clamp(30px, 4.5vw, 48px);
  line-height: 1.1;
  margin-bottom: var(--f13);
  text-wrap: balance;
}
.guide-content h2 {
  font-size: clamp(22px, 3vw, 32px);
  margin: var(--f55) 0 var(--f13);
  line-height: 1.2;
  text-wrap: balance;
}
.guide-content h3 {
  font-size: clamp(18px, 2.2vw, 22px);
  margin: var(--f34) 0 var(--f13);
  line-height: 1.25;
}
.guide-content p {
  font-size: 16px;
  line-height: 1.7;
  margin-bottom: var(--f13);
  max-width: 72ch;
  text-wrap: pretty;
}
.guide-content ul,
.guide-content ol {
  margin: var(--f13) 0 var(--f21) var(--f21);
}
.guide-content li {
  margin-bottom: 6px;
  list-style: disc;
  max-width: 72ch;
  padding-left: 4px;
}
.guide-content code {
  font-family: var(--font-mono);
  font-size: 0.9em;
  padding: 1px 5px;
}
[data-theme="dark"] .guide-content h1 { font-family: var(--font-display); color: var(--phosphor-hot); text-transform: uppercase; }
[data-theme="dark"] .guide-content h2 { font-family: var(--font-display); color: var(--phosphor); text-transform: uppercase; padding-bottom: var(--f8); border-bottom: 1px solid var(--phosphor-dim); }
[data-theme="dark"] .guide-content h3 { font-family: var(--font-display); color: var(--phosphor); }
[data-theme="dark"] .guide-content p { color: var(--phosphor); font-family: var(--font-body); }
[data-theme="dark"] .guide-content li { color: var(--phosphor); }
[data-theme="dark"] .guide-content strong { color: var(--phosphor-hot); }
[data-theme="dark"] .guide-content a { color: var(--amber); text-decoration: underline; }
[data-theme="dark"] .guide-content code { background: var(--bg-raised); color: var(--amber); border: 1px solid var(--phosphor-dim); }
[data-theme="dark"] .guide-content pre {
  background: var(--bg-deep);
  border: 1px solid var(--phosphor-dim);
  padding: var(--f21);
  overflow-x: auto;
  font-size: 13px;
  color: var(--phosphor);
  margin: var(--f21) 0;
}

[data-theme="light"] .guide-content h1 { font-family: var(--font-display); color: var(--ink); font-weight: 700; }
[data-theme="light"] .guide-content h2 {
  font-family: var(--font-display);
  color: var(--ink);
  font-weight: 700;
  padding: 4px 10px;
  background: linear-gradient(transparent 62%, var(--highlighter) 62%, var(--highlighter) 92%, transparent 92%);
  display: inline-block;
}
[data-theme="light"] .guide-content h3 { font-family: var(--font-display); color: var(--ink); font-weight: 700; }
[data-theme="light"] .guide-content p { color: var(--ink); font-family: var(--font-body); }
[data-theme="light"] .guide-content li { color: var(--ink); font-family: var(--font-body); }
[data-theme="light"] .guide-content strong { color: var(--margin-red); }
[data-theme="light"] .guide-content a { color: var(--ink); text-decoration: underline; text-decoration-color: var(--margin-red); }
[data-theme="light"] .guide-content code { background: var(--paper-hi); color: var(--margin-red); border: 1px solid var(--pencil); }
[data-theme="light"] .guide-content pre {
  background: var(--paper-hi);
  border: 1.5px solid var(--ink);
  padding: var(--f21);
  overflow-x: auto;
  font-size: 13px;
  color: var(--ink);
  margin: var(--f21) 0;
  box-shadow: 2px 3px 0 rgba(26, 31, 46, 0.08);
}

/* Images in guide/project content */
.guide-content img {
  display: block;
  max-width: 100%;
  height: auto;
  margin: var(--f21) 0;
}
[data-theme="dark"] .guide-content img {
  border: 1px solid var(--phosphor-dim);
  filter: grayscale(0.25) brightness(0.85) contrast(1.1) sepia(0.12) hue-rotate(60deg);
  opacity: 0.88;
}
[data-theme="light"] .guide-content img {
  border: 1px solid var(--ink);
  box-shadow: 3px 5px 0 rgba(26, 31, 46, 0.1);
  filter: sepia(0.12) contrast(0.96);
}

/* Blockquotes in guide/project content */
.guide-content blockquote {
  margin: var(--f34) 0;
  padding: var(--f21) var(--f34);
  font-size: 20px;
  line-height: 1.45;
  position: relative;
  text-wrap: balance;
  max-width: 68ch;
}
[data-theme="dark"] .guide-content blockquote {
  font-family: var(--font-display);
  color: var(--phosphor-hot);
  border-left: 3px solid var(--amber);
  background: var(--bg-raised);
}
[data-theme="light"] .guide-content blockquote {
  font-family: var(--font-display);
  font-weight: 700;
  color: var(--ink);
  background: rgba(244, 184, 96, 0.22);
  border-left: 3px solid var(--margin-red);
  transform: rotate(-0.3deg);
}

/* Inline hero-stats in guide/project content */
.guide-content .hero-stats { margin: var(--f34) 0; max-width: none; }
.guide-content .tech-row { margin: var(--f21) 0; }
.guide-content .hero-stats .stat-num { font-size: clamp(32px, 5vw, 54px); }

/* Figures with captions */
.guide-content figure {
  margin: var(--f34) 0;
}
.guide-content figure img {
  margin: 0;
}
.guide-content figcaption {
  font-size: 13px;
  margin-top: var(--f8);
  text-align: center;
  font-style: italic;
}
[data-theme="dark"] .guide-content figcaption { color: var(--phosphor-dim); font-family: var(--font-mono); }
[data-theme="dark"] .guide-content figcaption::before { content: "// "; }
[data-theme="light"] .guide-content figcaption { color: var(--pencil); font-family: var(--font-scribble); font-size: 18px; }

/* Tables in guide content */
.guide-content table {
  width: 100%;
  margin: var(--f21) 0;
  border-collapse: collapse;
  font-size: 14px;
}
.guide-content th, .guide-content td {
  padding: var(--f8) var(--f13);
  text-align: left;
}
[data-theme="dark"] .guide-content table { font-family: var(--font-mono); color: var(--phosphor); }
[data-theme="dark"] .guide-content th { border-bottom: 1px solid var(--phosphor); color: var(--phosphor-hot); text-transform: uppercase; font-size: 11px; letter-spacing: 0.08em; }
[data-theme="dark"] .guide-content td { border-bottom: 1px dashed var(--phosphor-dim); }
[data-theme="light"] .guide-content table { font-family: var(--font-body); color: var(--ink); }
[data-theme="light"] .guide-content th { border-bottom: 2px solid var(--ink); font-family: var(--font-display); font-weight: 700; }
[data-theme="light"] .guide-content td { border-bottom: 1px dashed var(--pencil); }

/* ----------------------------------------------------------------
   28. REDUCED MOTION
   ---------------------------------------------------------------- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
  [data-reveal], [data-reveal-l], [data-reveal-r] {
    opacity: 1 !important;
    transform: none !important;
  }
  .pipeline-wrap { min-height: auto; }
  .pipeline-sticky { position: static; min-height: auto; }
  .pipe-node { opacity: 1; filter: none; }
  [data-theme="dark"] .crt-frame { animation: none; }
}

/* ----------------------------------------------------------------
   29. MOBILE
   ---------------------------------------------------------------- */
@media (max-width: 860px) {
  .primary-nav {
    position: fixed;
    top: var(--header-h);
    left: 0; right: 0;
    background: inherit;
    transform: translateY(-110%);
    transition: transform var(--dur-base);
    padding: var(--f21);
    border-bottom: 1px solid var(--accent-dim);
  }
  .primary-nav.open { transform: translateY(0); }
  .primary-nav ul { flex-direction: column; gap: var(--f13); align-items: flex-start; }
  .nav-toggle { display: flex; }
  [data-theme="light"] .tgl-light { right: 16px; }
  .site-header { padding: 0; }
  .header-inner { padding: 0 var(--f13); }
  #hero { padding-top: var(--f34); }
  .project-visual { display: none; }
  .flagship .project-body { grid-template-columns: 1fr; }
  .hero-stats { margin-top: var(--f34); }
}
@media (max-width: 520px) {
  [data-theme="dark"] .hero-banner,
  [data-theme="dark"] .hero-banner-2 { display: none; }
  .hero-prompt { font-size: 13px; }
  [data-theme="light"] .hero-title-paper { font-size: clamp(54px, 16vw, 100px); }
}