/* ==========================================================================
   Girish Benni — portfolio
   A single stylesheet. No frameworks, no external fonts, no tracking.

   1. Tokens
   2. Reset & base
   3. Typography helpers
   4. Header & navigation
   5. Hero
   6. Section shell
   7. About
   8. Projects
   9. Security
   10. AI
   11. GitHub
   12. Writing
   13. Author / books (opt-in)
   14. Contact
   15. Footer
   16. Responsive
   17. Motion & print
   ========================================================================== */

/* 1. TOKENS ---------------------------------------------------------------- */
:root {
  --bg: #0a0b0a;
  --bg-soft: #0d0f0d;
  --panel: #111411;
  --panel-2: #161a16;

  --ink: #eceee6;
  --ink-soft: #c3c8bb;
  --muted: #8d9487;
  --faint: #7b8375;

  --line: rgba(236, 238, 230, 0.11);
  --line-strong: rgba(236, 238, 230, 0.22);

  --accent: #c9f24f;
  --accent-soft: rgba(201, 242, 79, 0.12);
  --cyan: #8ed8d1;
  --violet: #b6a6ff;

  --serif: "Iowan Old Style", "Palatino Linotype", Palatino, "Book Antiqua", Georgia, "Times New Roman", serif;
  --sans: "Segoe UI Variable Text", "Segoe UI", -apple-system, BlinkMacSystemFont, Inter, system-ui, "Helvetica Neue", Arial, sans-serif;
  --mono: "Cascadia Code", "Cascadia Mono", ui-monospace, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;

  --wrap: 1280px;
  --gutter: clamp(18px, 4vw, 52px);
  --head-h: 68px;

  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
  --fast: 0.18s;
  --slow: 0.6s;
}

/* 2. RESET & BASE ---------------------------------------------------------- */
*,
*::before,
*::after { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--head-h) + 24px);
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink-soft);
  font-family: var(--sans);
  font-size: 16.5px;
  line-height: 1.65;
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

/* A quiet paper grain over the whole page. */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  opacity: 0.035;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='160' height='160' filter='url(%23n)'/%3E%3C/svg%3E");
}

body.menu-open { overflow: hidden; }

main { position: relative; z-index: 2; }
.site-head, .site-foot { position: relative; z-index: 3; }

img, svg { display: block; max-width: 100%; }
img { height: auto; }

[hidden] { display: none !important; }

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

a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; }

h1, h2, h3, h4, p, ul, ol, dl, figure, pre { margin: 0; }
ul, ol { list-style: none; padding: 0; }
pre { font-family: var(--mono); }

::selection { background: var(--accent); color: #0a0b0a; }

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 2px;
}

/* Thin, quiet scrollbar. */
* { scrollbar-width: thin; scrollbar-color: #3a4137 transparent; }
*::-webkit-scrollbar { width: 10px; height: 10px; }
*::-webkit-scrollbar-thumb { background: #333a31; border: 3px solid var(--bg); }

.skip-link {
  position: fixed;
  top: 10px;
  left: 10px;
  z-index: 200;
  padding: 10px 16px;
  background: var(--accent);
  color: #0a0b0a;
  font-family: var(--mono);
  font-size: 12px;
  transform: translateY(-150%);
  transition: transform var(--fast) var(--ease);
}
.skip-link:focus { transform: none; }

.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  z-index: 120;
  background: transparent;
  pointer-events: none;
}
.scroll-progress span {
  display: block;
  height: 100%;
  width: 0;
  background: var(--accent);
  opacity: 0.9;
  transition: width 0.08s linear;
}

/* 3. TYPOGRAPHY HELPERS ---------------------------------------------------- */
.mono { font-family: var(--mono); }

.wrap {
  width: 100%;
  max-width: var(--wrap);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.icon { width: 15px; height: 15px; flex: none; }

.eyebrow {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--muted);
}
.eyebrow__dot {
  width: 6px;
  height: 6px;
  background: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
  animation: pulse 3.2s var(--ease) infinite;
}

@keyframes pulse {
  0%, 100% { box-shadow: 0 0 0 3px var(--accent-soft); }
  50% { box-shadow: 0 0 0 6px rgba(201, 242, 79, 0.04); }
}

/* Buttons ----------------------------------------------------------------- */
.btn {
  --btn-bg: transparent;
  --btn-fg: var(--ink);
  --btn-bd: var(--line-strong);
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 13px 20px;
  background: var(--btn-bg);
  color: var(--btn-fg);
  border: 1px solid var(--btn-bd);
  border-radius: 1px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  cursor: pointer;
  transition: background var(--fast) var(--ease), color var(--fast) var(--ease),
    border-color var(--fast) var(--ease), transform var(--fast) var(--ease);
}
.btn .icon { transition: transform var(--fast) var(--ease); }
.btn:hover { transform: translateY(-1px); }
.btn:hover .icon { transform: translate(2px, 0); }

.btn--primary {
  --btn-bg: var(--accent);
  --btn-fg: #0b0c0a;
  --btn-bd: var(--accent);
  font-weight: 600;
}
.btn--primary:hover { --btn-bg: #d7ff68; --btn-bd: #d7ff68; }

.btn--ghost:hover {
  --btn-bg: rgba(236, 238, 230, 0.05);
  --btn-bd: var(--ink-soft);
}

.link-arrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding-bottom: 3px;
  border-bottom: 1px solid var(--line-strong);
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink);
  transition: color var(--fast) var(--ease), border-color var(--fast) var(--ease);
}
.link-arrow .icon { transition: transform var(--fast) var(--ease); }
.link-arrow:hover { color: var(--accent); border-color: var(--accent); }
.link-arrow:hover .icon { transform: translate(2px, -2px); }

.tag {
  display: inline-flex;
  align-items: center;
  padding: 3px 7px;
  border: 1px solid var(--line);
  font-family: var(--mono);
  font-size: 9.5px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
  white-space: nowrap;
}

.placeholder-badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 3px 7px;
  border: 1px dashed rgba(201, 242, 79, 0.45);
  color: var(--accent);
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  white-space: nowrap;
}
.placeholder-badge::before {
  content: "";
  width: 4px;
  height: 4px;
  background: currentColor;
}

.dev-note {
  margin-top: 34px;
  padding: 12px 14px;
  border: 1px dashed var(--line-strong);
  font-family: var(--mono);
  font-size: 11px;
  line-height: 1.7;
  color: var(--muted);
}
.dev-note code {
  color: var(--accent);
  font-family: inherit;
}

/* 4. HEADER & NAVIGATION --------------------------------------------------- */
.site-head {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--head-h);
  background: rgba(10, 11, 10, 0.76);
  -webkit-backdrop-filter: blur(16px) saturate(120%);
  backdrop-filter: blur(16px) saturate(120%);
  border-bottom: 1px solid var(--line);
}
body.menu-open .site-head { background: var(--bg); }
.site-head.is-scrolled { box-shadow: 0 10px 30px -24px rgba(0, 0, 0, 0.9); }

.head-inner {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  flex: none;
}
.brand__mark {
  position: relative;
  display: grid;
  place-items: center;
  width: 32px;
  height: 32px;
  border: 1px solid var(--line-strong);
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.04em;
  color: var(--ink);
  transition: border-color var(--fast) var(--ease), color var(--fast) var(--ease);
}
.brand__mark::after {
  content: "";
  position: absolute;
  right: -1px;
  bottom: -1px;
  width: 5px;
  height: 5px;
  background: var(--accent);
}
.brand:hover .brand__mark { border-color: var(--accent); color: var(--accent); }

.brand__text { display: flex; flex-direction: column; line-height: 1.1; }
.brand__name {
  font-size: 11.5px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink);
}
.brand__sub {
  margin-top: 3px;
  font-family: var(--mono);
  font-size: 8.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--faint);
}

.nav__list {
  display: flex;
  align-items: center;
  gap: clamp(12px, 1.8vw, 26px);
}
.nav__list a {
  position: relative;
  display: inline-flex;
  align-items: baseline;
  gap: 6px;
  padding: 6px 0;
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
  transition: color var(--fast) var(--ease);
}
.nav__list a::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 1px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--fast) var(--ease);
}
.nav__list a:hover { color: var(--ink); }
.nav__list a:hover::after,
.nav__list a[aria-current="page"]::after { transform: scaleX(1); }
.nav__list a[aria-current="page"] { color: var(--accent); }
.nav__num {
  font-size: 8px;
  color: var(--faint);
  letter-spacing: 0.04em;
}
.nav__list a[aria-current="page"] .nav__num { color: var(--accent); }
.nav__foot { display: none; }
.nav:focus { outline: none; }
.section:focus { outline: none; }

.nav-toggle {
  display: none;
  align-items: center;
  gap: 10px;
  padding: 8px 0;
  background: none;
  border: 0;
  cursor: pointer;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink);
}
.nav-toggle__bars {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 20px;
  height: 14px;
}
.nav-toggle__bars i {
  display: block;
  height: 1px;
  width: 100%;
  background: currentColor;
  transition: transform var(--fast) var(--ease), opacity var(--fast) var(--ease);
}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars i:first-child { transform: translateY(3px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars i:last-child { transform: translateY(-3px) rotate(-45deg); }

/* 5. HERO ------------------------------------------------------------------ */
.hero {
  position: relative;
  padding-top: clamp(48px, 7vw, 88px);
  border-bottom: 1px solid var(--line);
}
.hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.92fr);
  gap: clamp(36px, 5.5vw, 92px);
  align-items: start;
  padding-bottom: clamp(56px, 7vw, 96px);
}

.hero__name {
  margin: 22px 0 26px;
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(64px, 9.6vw, 148px);
  line-height: 0.84;
  letter-spacing: -0.045em;
  color: var(--ink);
}
.hero__first { display: block; }
.hero__last {
  display: block;
  padding-left: 0.07em;
  font-style: italic;
  letter-spacing: -0.055em;
}
.hero__dot { color: var(--accent); }

.hero__headline {
  max-width: 30ch;
  font-family: var(--serif);
  font-style: italic;
  font-size: clamp(20px, 2.1vw, 28px);
  line-height: 1.32;
  color: var(--ink);
  letter-spacing: -0.01em;
}

.hero__intro {
  max-width: 48ch;
  margin-top: 20px;
  font-size: 15.5px;
  line-height: 1.72;
  color: var(--muted);
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 32px;
}

.hero__socials {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px 18px;
  margin-top: 30px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
  max-width: 420px;
}
.social-link {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
  transition: color var(--fast) var(--ease);
}
.social-link .icon { width: 13px; height: 13px; }
.social-link:hover { color: var(--accent); }

.hero__side {
  display: flex;
  flex-direction: column;
  gap: 22px;
  padding-top: clamp(6px, 2vw, 28px);
}

/* Terminal */
.terminal {
  position: relative;
  border: 1px solid var(--line-strong);
  background: linear-gradient(155deg, #101310 0%, #0b0d0b 62%, #0e110e 100%);
  box-shadow: 0 30px 70px -40px rgba(0, 0, 0, 0.9), 0 0 0 1px rgba(0, 0, 0, 0.4);
}
.terminal::after {
  content: "";
  position: absolute;
  top: -1px;
  right: 22px;
  width: 46px;
  height: 2px;
  background: var(--accent);
}
.terminal__bar {
  display: flex;
  align-items: center;
  gap: 12px;
  height: 40px;
  padding: 0 14px;
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.015);
}
.terminal__dots { display: flex; gap: 5px; }
.terminal__dots i {
  width: 7px;
  height: 7px;
  border: 1px solid var(--line-strong);
  border-radius: 50%;
}
.terminal__title {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.06em;
  color: var(--muted);
}
.terminal__tag {
  margin-left: auto;
  font-family: var(--mono);
  font-size: 8.5px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--faint);
}
.terminal__body {
  padding: 22px 18px 24px;
  font-family: var(--mono);
  font-size: 12.5px;
  line-height: 1.95;
  letter-spacing: 0.01em;
  color: var(--ink-soft);
  overflow-x: auto;
}
.t-line {
  white-space: pre;
  opacity: 0;
  transform: translateY(4px);
}
.js .t-line { animation: tline 0.5s var(--ease) forwards; animation-delay: calc(0.18s + var(--i) * 0.07s); }
@keyframes tline {
  to { opacity: 1; transform: none; }
}
.t-prompt { color: var(--accent); }
.t-out { color: var(--ink); }
.t-dir { color: var(--cyan); }
.t-note { color: var(--faint); font-style: italic; }
.t-caret {
  display: inline-block;
  width: 7px;
  height: 14px;
  vertical-align: -2px;
  background: var(--accent);
  animation: blink 1.1s steps(1) infinite;
}
@keyframes blink { 50% { opacity: 0; } }

.terminal__foot {
  display: flex;
  justify-content: space-between;
  padding: 9px 14px;
  border-top: 1px solid var(--line);
  font-family: var(--mono);
  font-size: 8.5px;
  letter-spacing: 0.13em;
  text-transform: uppercase;
  color: var(--faint);
}
.terminal__sig { color: var(--muted); }

/* Section index under the terminal */
.hero__index { border-top: 1px solid var(--line); padding-top: 16px; }
.hero__index-title {
  margin-bottom: 10px;
  font-family: var(--mono);
  font-size: 8.5px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--faint);
}
.hero__index ul { display: grid; grid-template-columns: 1fr 1fr; gap: 0 18px; }
.hero__index a {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 10px;
  padding: 7px 0;
  border-bottom: 1px dotted rgba(236, 238, 230, 0.1);
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.06em;
  color: var(--muted);
  transition: color var(--fast) var(--ease), border-color var(--fast) var(--ease);
}
.hero__index a:hover { color: var(--accent); border-bottom-color: var(--accent); }
.hero__index .count { color: var(--faint); }

/* Ticker */
.ticker {
  position: relative;
  overflow: hidden;
  height: 42px;
  display: flex;
  align-items: center;
  border-top: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.012);
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 6%, #000 94%, transparent);
  mask-image: linear-gradient(90deg, transparent, #000 6%, #000 94%, transparent);
}
.ticker__track {
  display: flex;
  align-items: center;
  gap: 30px;
  width: max-content;
  padding-left: 30px;
  animation: ticker 32s linear infinite;
}
.ticker:hover .ticker__track { animation-play-state: paused; }
.ticker__track span {
  font-family: var(--mono);
  font-size: 9.5px;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--faint);
  white-space: nowrap;
}
.ticker__track i {
  width: 4px;
  height: 4px;
  background: var(--accent);
  opacity: 0.6;
  flex: none;
}
@keyframes ticker {
  to { transform: translateX(-50%); }
}

/* 6. SECTION SHELL --------------------------------------------------------- */
.section {
  position: relative;
  padding-block: clamp(72px, 9vw, 132px);
  border-top: 1px solid var(--line);
}
.section:first-of-type { border-top: 0; }

.s-head {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: 14px 24px;
  align-items: end;
  margin-bottom: clamp(38px, 5vw, 64px);
}
.s-index {
  grid-column: 1 / 3;
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding-top: 10px;
  border-top: 1px solid var(--line-strong);
  font-family: var(--mono);
  font-size: 9.5px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--muted);
}
.s-index__num { color: var(--accent); }
.s-title {
  grid-column: 3 / 9;
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(34px, 4.5vw, 62px);
  line-height: 1;
  letter-spacing: -0.035em;
  color: var(--ink);
}
.s-intro {
  grid-column: 9 / 13;
  padding-bottom: 4px;
  font-size: 14px;
  line-height: 1.68;
  color: var(--muted);
}

.reveal {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}
.reveal.is-in { opacity: 1; transform: none; }

/* 7. ABOUT ----------------------------------------------------------------- */
.about__grid {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: 24px;
}
.about__body { grid-column: 2 / 8; }
.about__body p {
  max-width: 58ch;
  margin-bottom: 20px;
  color: var(--muted);
}
.about__body p:last-child { margin-bottom: 0; }
.about__lede {
  margin-bottom: 26px !important;
  font-family: var(--serif);
  font-size: clamp(20px, 2vw, 26px);
  line-height: 1.45;
  letter-spacing: -0.01em;
  color: var(--ink) !important;
}
.about__lede::first-letter {
  float: left;
  margin: 0.08em 0.09em 0 0;
  font-size: 3.3em;
  line-height: 0.78;
  color: var(--accent);
}

.about__aside { grid-column: 9 / 13; display: flex; flex-direction: column; gap: 22px; }

.idcard {
  position: relative;
  padding: 20px;
  background: linear-gradient(165deg, #101310, #0c0e0c);
  border: 1px solid var(--line-strong);
}
.idcard::before {
  content: "";
  position: absolute;
  inset: 8px;
  border: 1px solid rgba(236, 238, 230, 0.05);
  pointer-events: none;
}
.idcard__top { display: flex; align-items: flex-start; justify-content: space-between; }
.idcard__mono {
  font-family: var(--serif);
  font-size: 56px;
  line-height: 0.8;
  letter-spacing: -0.06em;
  color: var(--ink);
}
.idcard__meta {
  font-family: var(--mono);
  font-size: 8px;
  line-height: 1.5;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  text-align: right;
  color: var(--faint);
}
.idcard__rule {
  height: 1px;
  margin: 18px 0 14px;
  background: linear-gradient(90deg, var(--accent), var(--line) 40%, transparent);
}
.idcard__name {
  font-family: var(--serif);
  font-size: 21px;
  letter-spacing: -0.01em;
  color: var(--ink);
}
.idcard__role {
  margin-top: 2px;
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
}
.idcard__bars {
  display: flex;
  align-items: flex-end;
  gap: 3px;
  height: 26px;
  margin: 18px 0;
  opacity: 0.65;
}
.idcard__bars i { display: block; width: 100%; background: var(--ink-soft); }
.idcard__bars i:nth-child(3n) { height: 100%; }
.idcard__bars i:nth-child(3n + 1) { height: 55%; }
.idcard__bars i:nth-child(3n + 2) { height: 80%; }
.idcard__bars i:nth-child(5) { background: var(--accent); }
.idcard__rows { display: grid; gap: 6px; }
.idcard__rows > div {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding-top: 6px;
  border-top: 1px dotted rgba(236, 238, 230, 0.09);
}
.idcard__rows dt,
.idcard__rows dd {
  font-family: var(--mono);
  font-size: 8.5px;
  letter-spacing: 0.09em;
  text-transform: uppercase;
}
.idcard__rows dt { color: var(--faint); }
.idcard__rows dd { margin: 0; color: var(--ink-soft); text-align: right; }

.currently { padding: 18px 0 0; border-top: 1px solid var(--line); }
.currently__title {
  margin-bottom: 10px;
  font-family: var(--mono);
  font-size: 8.5px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--faint);
}
.currently__list { display: grid; gap: 8px; }
.currently__list li {
  display: flex;
  gap: 10px;
  align-items: baseline;
  font-size: 13px;
  line-height: 1.5;
  color: var(--muted);
}
.currently__list li::before {
  content: "→";
  flex: none;
  font-family: var(--mono);
  font-size: 10px;
  color: var(--accent);
}

.about__note {
  position: relative;
  padding: 18px 0 0;
  border-top: 1px solid var(--line);
  font-family: var(--serif);
  font-style: italic;
  font-size: 15px;
  line-height: 1.55;
  color: var(--muted);
}
.about__note span { color: var(--accent); font-style: normal; }

/* 8. PROJECTS -------------------------------------------------------------- */
.filters {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding-bottom: 22px;
  border-bottom: 1px solid var(--line);
}
.filter {
  display: inline-flex;
  align-items: baseline;
  gap: 6px;
  padding: 8px 12px;
  border: 1px solid var(--line);
  background: transparent;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
  cursor: pointer;
  transition: color var(--fast) var(--ease), border-color var(--fast) var(--ease),
    background var(--fast) var(--ease);
}
.filter .filter__count { font-size: 8.5px; color: var(--faint); }
.filter:hover { color: var(--ink); border-color: var(--line-strong); }
.filter[aria-pressed="true"] {
  background: var(--accent);
  border-color: var(--accent);
  color: #0a0b0a;
}
.filter[aria-pressed="true"] .filter__count { color: rgba(10, 11, 10, 0.55); }

.filter-status {
  padding: 10px 0 0;
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--faint);
}

.project-list { margin-top: 30px; }
.project {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: 24px;
  align-items: center;
  padding: clamp(30px, 4vw, 48px) 0;
  border-top: 1px solid var(--line);
}
.project:first-child { border-top: 0; padding-top: 0; }
.project.is-hidden { display: none; }

.project__media { grid-column: 1 / 7; }
.project.is-alt .project__media { grid-column: 7 / 13; order: 2; }
.project__body { grid-column: 8 / 13; }
.project.is-alt .project__body { grid-column: 1 / 6; order: 1; }

.project__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-bottom: 12px;
}
.project__status {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--faint);
}
.project__status::before {
  content: "";
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--accent);
}
.project__status[data-status="archived"]::before { background: var(--faint); }
.project__status[data-status="planned"]::before { background: var(--cyan); }

.project__title {
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(28px, 3.2vw, 42px);
  line-height: 1.08;
  letter-spacing: -0.03em;
  color: var(--ink);
  transition: color var(--fast) var(--ease);
}
.project:hover .project__title { color: #fff; }
.project__desc {
  max-width: 46ch;
  margin-top: 12px;
  font-size: 14.5px;
  line-height: 1.68;
  color: var(--muted);
}
.project__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 18px;
}
.project__links {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  margin-top: 22px;
}
.project__nolink {
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--faint);
}

/* Project artwork --------------------------------------------------------- */
.art {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16 / 10;
  background: #0c0f0c;
  border: 1px solid var(--line);
  isolation: isolate;
}
.project__media .art { transition: border-color 0.4s var(--ease); }
.project:hover .art { border-color: var(--line-strong); }

.art__glow {
  position: absolute;
  inset: -30%;
  background: radial-gradient(circle at 28% 22%, var(--accent, #c9f24f), transparent 55%);
  opacity: 0.14;
  filter: blur(28px);
  z-index: 0;
}
.art__grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(236, 238, 230, 0.07) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(236, 238, 230, 0.07) 1px, transparent 1px);
  background-size: 44px 44px;
  -webkit-mask-image: radial-gradient(120% 100% at 70% 20%, #000 20%, transparent 78%);
  mask-image: radial-gradient(120% 100% at 70% 20%, #000 20%, transparent 78%);
  z-index: 0;
}
.art__index {
  position: absolute;
  top: 14px;
  left: 16px;
  z-index: 3;
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: 0.16em;
  color: var(--faint);
}
.art__label {
  position: absolute;
  top: 12px;
  right: 14px;
  z-index: 3;
  padding: 3px 7px;
  border: 1px solid var(--line);
  background: rgba(10, 11, 10, 0.55);
  font-family: var(--mono);
  font-size: 8px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
}
.art__corner {
  position: absolute;
  right: 14px;
  bottom: 12px;
  z-index: 3;
  width: 22px;
  height: 22px;
  border-right: 1px solid var(--line-strong);
  border-bottom: 1px solid var(--line-strong);
}
.art__shell {
  position: absolute;
  inset: 0;
  z-index: 2;
  padding: 52px 34px 30px;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* terminal art */
.art--terminal .art__term {
  position: absolute;
  left: 34px;
  right: 34px;
  bottom: 34px;
  z-index: 2;
  font-family: var(--mono);
  font-size: clamp(9px, 0.95vw, 11.5px);
  line-height: 1.9;
  color: var(--ink-soft);
  white-space: pre;
  overflow: hidden;
}
.art__term .p { color: var(--accent); }
.art__term .c { color: var(--faint); }
.art__term .k { color: var(--cyan); }

/* grid art */
.art--grid .art__shape {
  position: relative;
  z-index: 2;
  width: 46%;
  aspect-ratio: 1;
  border: 1px solid var(--line-strong);
  background:
    linear-gradient(135deg, var(--accent) 0 2px, transparent 2px) 0 0 / 22% 22%,
    linear-gradient(315deg, rgba(236, 238, 230, 0.16) 0 1px, transparent 1px) 0 0 / 22% 22%;
  opacity: 0.9;
}
.art--grid .art__shape::before,
.art--grid .art__shape::after {
  content: "";
  position: absolute;
  background: var(--accent);
}
.art--grid .art__shape::before { width: 1px; height: 100%; left: 50%; opacity: 0.35; }
.art--grid .art__shape::after { height: 1px; width: 100%; top: 50%; opacity: 0.35; }

/* orbit art */
.art--orbit .art__shape {
  position: relative;
  z-index: 2;
  width: 56%;
  aspect-ratio: 1;
  border: 1px solid var(--line-strong);
  border-radius: 50%;
  box-shadow:
    0 0 0 26px rgba(236, 238, 230, 0.03),
    0 0 0 27px rgba(236, 238, 230, 0.1),
    0 0 0 60px rgba(236, 238, 230, 0.02),
    0 0 0 61px rgba(236, 238, 230, 0.07);
}
.art--orbit .art__shape::before {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 10px;
  height: 10px;
  margin: -5px 0 0 -5px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 22px var(--accent);
}
.art--orbit .art__shape::after {
  content: "";
  position: absolute;
  top: -4px;
  left: 50%;
  width: 8px;
  height: 8px;
  margin-left: -4px;
  border-radius: 50%;
  background: var(--cyan);
}

/* signal art */
.art--signal .art__shape {
  position: relative;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 5px;
  width: 78%;
  height: 46%;
}
.art--signal .art__shape i {
  display: block;
  width: 3px;
  background: var(--accent);
  opacity: 0.5;
  border-radius: 1px;
}
.art--signal .art__shape i:nth-child(3n) { opacity: 0.85; }
.art--signal .art__shape i:nth-child(4n) { background: var(--cyan); opacity: 0.6; }

/* stack art */
.art--stack .art__shape {
  position: relative;
  z-index: 2;
  width: 44%;
  aspect-ratio: 3 / 4;
}
.art--stack .art__shape i {
  position: absolute;
  inset: 0;
  border: 1px solid var(--line-strong);
  background: rgba(13, 16, 13, 0.85);
  transition: transform 0.5s var(--ease);
}
.art--stack .art__shape i:nth-child(1) { transform: translate(-18px, 14px) rotate(-5deg); opacity: 0.4; }
.art--stack .art__shape i:nth-child(2) { transform: translate(-9px, 7px) rotate(-2.5deg); opacity: 0.7; }
.art--stack .art__shape i:nth-child(3) {
  border-color: var(--line-strong);
  background:
    linear-gradient(160deg, rgba(201, 242, 79, 0.1), transparent 60%),
    #0f120f;
}
.art--stack .art__shape i:nth-child(3)::before {
  content: "";
  position: absolute;
  left: 14px;
  top: 14px;
  width: 26px;
  height: 2px;
  background: var(--accent);
}
.art--stack .art__shape i:nth-child(3)::after {
  content: "";
  position: absolute;
  left: 14px;
  right: 14px;
  bottom: 16px;
  height: 38%;
  background-image: linear-gradient(to bottom, rgba(236, 238, 230, 0.16) 1px, transparent 1px);
  background-size: 100% 7px;
  opacity: 0.7;
}
.project:hover .art--stack .art__shape i:nth-child(1) { transform: translate(-24px, 18px) rotate(-7deg); }
.project:hover .art--stack .art__shape i:nth-child(3) { transform: translate(4px, -3px); }

/* topo art */
.art--topo .art__shape {
  position: relative;
  z-index: 2;
  width: 70%;
  aspect-ratio: 1;
  border-radius: 50%;
  background:
    repeating-radial-gradient(ellipse at 46% 52%, transparent 0 13px, rgba(236, 238, 230, 0.14) 13px 14px, transparent 14px 27px);
}
.art--topo .art__shape::after {
  content: "";
  position: absolute;
  right: 18%;
  top: 30%;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 5px rgba(201, 242, 79, 0.13);
}

/* real image projects */
.project__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.7s var(--ease);
}
.project:hover .project__img { transform: scale(1.025); }

.empty-note {
  padding: 40px 0;
  font-family: var(--mono);
  font-size: 12px;
  color: var(--muted);
  text-align: center;
}

/* 9. SECURITY -------------------------------------------------------------- */
.section--security { background: var(--bg-soft); }
.security__grid {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: 24px;
}
.security__aside { grid-column: 1 / 4; }
.security__aside > .ethics,
.security__aside > .security__count { position: sticky; }
.security__aside > .ethics { top: calc(var(--head-h) + 32px); }

.ethics {
  padding: 22px;
  border: 1px solid var(--line);
  border-left: 2px solid var(--accent);
  background: linear-gradient(150deg, rgba(201, 242, 79, 0.05), rgba(17, 20, 17, 0.4) 45%);
}
.ethics__icon { width: 22px; height: 22px; color: var(--accent); margin-bottom: 14px; }
.ethics__icon svg { width: 100%; height: 100%; }
.ethics__title {
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink);
}
.ethics__text {
  margin-top: 10px;
  font-size: 12.5px;
  line-height: 1.65;
  color: var(--muted);
}
.ethics__meta {
  margin-top: 16px;
  padding-top: 10px;
  border-top: 1px dotted var(--line);
  font-size: 8.5px;
  letter-spacing: 0.06em;
  color: var(--faint);
}
.security__count {
  margin-top: 14px;
  top: calc(var(--head-h) + 300px);
  font-family: var(--mono);
  font-size: 8.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--faint);
}

.lab-list { grid-column: 4 / 13; }
.lab {
  display: grid;
  grid-template-columns: 108px minmax(0, 1fr) auto;
  gap: 22px;
  align-items: start;
  padding: 26px 0;
  border-top: 1px solid var(--line);
  transition: background var(--fast) var(--ease);
}
.lab:first-child { border-top: 0; padding-top: 0; }
.lab:hover { background: rgba(236, 238, 230, 0.017); }
.lab__meta {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-family: var(--mono);
  font-size: 9.5px;
  letter-spacing: 0.08em;
  color: var(--faint);
}
.lab__cat { color: var(--cyan); text-transform: uppercase; font-size: 8.5px; letter-spacing: 0.12em; }
.lab__title {
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(20px, 2.1vw, 27px);
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--ink);
}
.lab__desc {
  max-width: 58ch;
  margin-top: 8px;
  font-size: 13.5px;
  line-height: 1.66;
  color: var(--muted);
}
.lab__tags { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 12px; }
.lab__links {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 10px;
  padding-top: 4px;
}

/* 10. AI ------------------------------------------------------------------- */
.section--ai {
  background:
    radial-gradient(70% 50% at 85% 0%, rgba(142, 216, 209, 0.05), transparent 60%),
    var(--bg);
}
.ai-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
}
.ai-card {
  position: relative;
  display: flex;
  flex-direction: column;
  min-height: 300px;
  padding: 26px;
  border: 1px solid var(--line);
  background: linear-gradient(160deg, rgba(255, 255, 255, 0.014), transparent 55%);
  transition: border-color 0.35s var(--ease), transform 0.35s var(--ease);
}
.ai-card::before {
  content: "";
  position: absolute;
  top: -1px;
  left: -1px;
  width: 44px;
  height: 2px;
  background: var(--accent, var(--accent));
}
.ai-card:hover { border-color: var(--line-strong); transform: translateY(-2px); }
.ai-card__media {
  margin: -26px -26px 22px;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  border-bottom: 1px solid var(--line);
  background: var(--bg-soft);
}
.ai-card__media img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.ai-card__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 26px;
}
.ai-card__num {
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: 0.14em;
  color: var(--faint);
}
.ai-card__status {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--mono);
  font-size: 8.5px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
}
.ai-card__status i {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--accent, var(--accent));
}
.ai-card__title {
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(23px, 2.4vw, 31px);
  line-height: 1.15;
  letter-spacing: -0.025em;
  color: var(--ink);
}
.ai-card__desc {
  max-width: 46ch;
  margin-top: 12px;
  font-size: 13.5px;
  line-height: 1.66;
  color: var(--muted);
}
.ai-card__foot {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px;
  margin-top: auto;
  padding-top: 22px;
}
.ai-card__tags { display: flex; flex-wrap: wrap; gap: 6px; }
.ai-card__badge { position: absolute; right: 18px; bottom: 16px; }

/* 11. GITHUB --------------------------------------------------------------- */
.github__body {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: 24px;
  align-items: start;
}
.gh-profile {
  grid-column: 1 / 5;
  position: relative;
  padding: 28px;
  border: 1px solid var(--line-strong);
  background: linear-gradient(165deg, #101310, #0b0d0b);
  overflow: hidden;
}
.gh-profile::after {
  content: "";
  position: absolute;
  right: -60px;
  bottom: -70px;
  width: 200px;
  height: 200px;
  border: 1px solid rgba(201, 242, 79, 0.14);
  border-radius: 50%;
  box-shadow: 0 0 0 30px rgba(201, 242, 79, 0.02);
  pointer-events: none;
}
.gh-profile__icon { width: 26px; height: 26px; color: var(--ink); margin-bottom: 26px; }
.gh-profile__eyebrow {
  font-family: var(--mono);
  font-size: 8.5px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--faint);
}
.gh-profile__handle {
  margin-top: 4px;
  font-family: var(--serif);
  font-size: clamp(26px, 3vw, 38px);
  letter-spacing: -0.03em;
  color: var(--ink);
  word-break: break-word;
}
.gh-profile__desc {
  max-width: 32ch;
  margin: 12px 0 26px;
  font-size: 13px;
  line-height: 1.65;
  color: var(--muted);
}
.gh-profile__desc code {
  font-family: var(--mono);
  font-size: 10.5px;
  color: var(--accent);
}
.gh-profile--empty { border-style: dashed; }
.gh-profile--empty .gh-profile__desc { margin-bottom: 0; }
.gh-profile--empty::after { display: none; }
.gh-repos { grid-column: 6 / 13; }
.gh-repos__head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line-strong);
  font-family: var(--mono);
  font-size: 8.5px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--faint);
}
.gh-live {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--accent);
}
.gh-live::before {
  content: "";
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: currentColor;
}
.repo-list { display: grid; }
.repo { border-bottom: 1px solid var(--line); }
.repo a,
.repo .repo__row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 4px 18px;
  padding: 18px 10px 18px 0;
  transition: background var(--fast) var(--ease), padding-left var(--fast) var(--ease);
}
.repo a:hover { background: rgba(236, 238, 230, 0.02); padding-left: 10px; }
.repo .repo__row { padding-right: 0; }
.repo__name {
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: 0.01em;
  color: var(--ink);
}
.repo__name::before { content: "↳ "; color: var(--faint); }
.repo a:hover .repo__name { color: var(--accent); }
.repo__desc {
  grid-column: 1 / 2;
  max-width: 62ch;
  font-size: 12.5px;
  line-height: 1.55;
  color: var(--muted);
}
.repo__meta {
  grid-column: 2 / 3;
  grid-row: 1 / 3;
  display: flex;
  align-items: center;
  gap: 14px;
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: 0.06em;
  color: var(--faint);
}
.repo__topics {
  grid-column: 1 / 2;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 4px;
}
.repo__topics span {
  font-family: var(--mono);
  font-size: 8.5px;
  letter-spacing: 0.06em;
  color: var(--faint);
}
.repo__topics span::before { content: "· "; color: var(--accent); }

/* 12. WRITING -------------------------------------------------------------- */
.writing-list { border-top: 1px solid var(--line-strong); }
.writing-item {
  border-bottom: 1px solid var(--line);
  transition: background var(--fast) var(--ease);
}
.writing-item:hover { background: rgba(236, 238, 230, 0.017); }
.writing-item__link {
  display: grid;
  grid-template-columns: 52px minmax(0, 1fr) auto;
  gap: 20px;
  align-items: start;
  padding: 26px 0;
}
.writing-item__link.is-static { cursor: default; }
.writing-item__link.has-cover { grid-template-columns: 52px 120px minmax(0, 1fr) auto; }
.writing-item__thumb {
  display: block;
  width: 120px;
  aspect-ratio: 16 / 10;
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--bg-soft);
}
.writing-item__thumb img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s var(--ease);
}
a.writing-item__link:hover .writing-item__thumb img { transform: scale(1.035); }
.writing-item__num {
  padding-top: 8px;
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: 0.1em;
  color: var(--faint);
}
.writing-item__main { display: block; min-width: 0; }
.writing-item__title {
  display: block;
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(21px, 2.4vw, 30px);
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--ink);
  transition: color var(--fast) var(--ease);
}
a.writing-item__link:hover .writing-item__title { color: var(--accent); }
.writing-item__desc {
  display: block;
  max-width: 64ch;
  margin-top: 6px;
  font-size: 13px;
  line-height: 1.62;
  color: var(--muted);
}
.writing-item__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: flex-end;
  gap: 10px;
  padding-top: 5px;
}
.writing-item__date {
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--faint);
  white-space: nowrap;
}
.writing-item__arrow { color: var(--faint); transition: color var(--fast) var(--ease), transform var(--fast) var(--ease); }
a.writing-item__link:hover .writing-item__arrow { color: var(--accent); transform: translate(2px, -2px); }

/* 13. AUTHOR / BOOKS (opt-in) ---------------------------------------------- */
.section--author {
  background:
    radial-gradient(60% 60% at 10% 0%, rgba(182, 166, 255, 0.05), transparent 60%),
    var(--bg-soft);
}
.author__grid {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: 24px;
}
.author__grid--solo .author__intro { grid-column: 1 / 7; }
.author__intro { grid-column: 1 / 5; }
.author__pen {
  font-family: var(--serif);
  font-style: italic;
  font-size: clamp(30px, 3.4vw, 44px);
  line-height: 1.1;
  letter-spacing: -0.03em;
  color: var(--ink);
}
.author__bio {
  max-width: 40ch;
  margin-top: 16px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--muted);
}
.author__cta { margin-top: 24px; }
.book-grid {
  grid-column: 6 / 13;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 22px;
}
.book__cover {
  position: relative;
  aspect-ratio: 2 / 3;
  padding: 18px 16px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  border: 1px solid var(--line-strong);
  background:
    linear-gradient(155deg, rgba(201, 242, 79, 0.1), transparent 55%),
    linear-gradient(150deg, #151a15, #0c0e0c);
  overflow: hidden;
}
.book__cover::before {
  content: "";
  position: absolute;
  inset: 8px auto 8px 8px;
  width: 1px;
  background: var(--line-strong);
}
.book__cover-title {
  font-family: var(--serif);
  font-size: clamp(16px, 1.6vw, 21px);
  line-height: 1.15;
  letter-spacing: -0.02em;
  color: var(--ink);
}
.book__cover-genre {
  font-family: var(--mono);
  font-size: 8px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent);
}
.book__cover-img { width: 100%; height: 100%; object-fit: cover; }
.book__title {
  margin-top: 12px;
  font-family: var(--serif);
  font-size: 18px;
  letter-spacing: -0.01em;
  color: var(--ink);
}
.book__desc {
  margin-top: 4px;
  font-size: 12px;
  line-height: 1.55;
  color: var(--muted);
}
.book__links { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 10px; }

/* 14. CONTACT -------------------------------------------------------------- */
.section--contact {
  background:
    radial-gradient(50% 60% at 80% 100%, rgba(201, 242, 79, 0.05), transparent 65%),
    var(--bg);
}
.contact__body {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: 24px;
  align-items: start;
}
.contact__primary { grid-column: 2 / 8; }
.contact__side { grid-column: 9 / 13; }

.contact__label {
  margin-bottom: 12px;
  font-family: var(--mono);
  font-size: 8.5px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--faint);
}
.contact__email {
  display: inline-flex;
  align-items: baseline;
  gap: 10px;
  max-width: 100%;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--line-strong);
  font-family: var(--serif);
  font-size: clamp(22px, 3.4vw, 44px);
  line-height: 1.15;
  letter-spacing: -0.03em;
  color: var(--ink);
  overflow-wrap: anywhere;
  transition: color var(--fast) var(--ease), border-color var(--fast) var(--ease);
}
.contact__email:hover { color: var(--accent); border-color: var(--accent); }
.contact__email .icon { width: 20px; height: 20px; align-self: center; }

.contact__actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 18px; }
.copy-btn {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 7px 10px;
  border: 1px solid var(--line);
  background: transparent;
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
  cursor: pointer;
  transition: color var(--fast) var(--ease), border-color var(--fast) var(--ease);
}
.copy-btn:hover { color: var(--ink); border-color: var(--line-strong); }
.copy-btn.is-copied { color: var(--accent); border-color: var(--accent); }

.contact__empty {
  max-width: 42ch;
  font-family: var(--serif);
  font-style: italic;
  font-size: 20px;
  color: var(--muted);
}

.contact__links { display: grid; border-top: 1px solid var(--line); }
.contact__links a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 11px 0;
  border-bottom: 1px solid var(--line);
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-soft);
  transition: color var(--fast) var(--ease), padding-left var(--fast) var(--ease);
}
.contact__links a:hover { color: var(--accent); padding-left: 6px; }
.contact__links .icon { width: 12px; height: 12px; color: var(--faint); }
.contact__note {
  margin-top: 16px;
  font-size: 12px;
  line-height: 1.6;
  color: var(--faint);
}

.dev-panel {
  margin-top: clamp(40px, 6vw, 64px);
  padding: 20px 22px;
  border: 1px dashed var(--line-strong);
  background: rgba(201, 242, 79, 0.02);
}
.dev-panel__title {
  margin-bottom: 12px;
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent);
}
.dev-panel li {
  display: flex;
  gap: 10px;
  padding: 5px 0;
  font-size: 12px;
  color: var(--muted);
}
.dev-panel li::before {
  content: "✕";
  font-family: var(--mono);
  font-size: 10px;
  color: var(--accent);
}
.dev-panel li.is-done { color: var(--faint); text-decoration: line-through; }
.dev-panel li.is-done::before { content: "✓"; color: var(--faint); }

/* 15. FOOTER --------------------------------------------------------------- */
.site-foot {
  border-top: 1px solid var(--line);
  padding-block: 30px;
}
.foot-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}
.foot__id { display: flex; align-items: center; gap: 12px; }
.foot__mark {
  display: grid;
  place-items: center;
  width: 26px;
  height: 26px;
  border: 1px solid var(--line);
  font-family: var(--mono);
  font-size: 8.5px;
  color: var(--muted);
}
.foot__copy {
  display: block;
  margin-top: 2px;
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: 0.06em;
  color: var(--faint);
}
.foot__links { display: flex; flex-wrap: wrap; gap: 16px; }
.foot__links a {
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--faint);
  transition: color var(--fast) var(--ease);
}
.foot__links a:hover { color: var(--accent); }
.foot__top {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
  transition: color var(--fast) var(--ease);
}
.foot__top:hover { color: var(--accent); }
.foot__top .icon { width: 12px; height: 12px; }

.noscript {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 150;
  padding: 12px 18px;
  background: var(--accent);
  color: #0a0b0a;
  font-family: var(--mono);
  font-size: 11px;
  line-height: 1.5;
}

/* 16. RESPONSIVE ----------------------------------------------------------- */
@media (max-width: 1120px) {
  .nav__list { gap: 13px; }
  .nav__num { display: none; }
  .hero__grid { grid-template-columns: minmax(0, 1fr) minmax(0, 0.9fr); gap: 40px; }
  .s-title { grid-column: 3 / 9; }
}

@media (max-width: 960px) {
  :root { --head-h: 62px; }

  .nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    height: calc(100dvh - var(--head-h));
    z-index: 90;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    padding: 30px var(--gutter) 34px;
    background: var(--bg);
    border-top: 1px solid var(--line);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-6px);
    transition: opacity 0.28s var(--ease), transform 0.28s var(--ease), visibility 0.28s;
    overflow-y: auto;
  }
  .nav.is-open { opacity: 1; visibility: visible; transform: none; }
  .nav__list { display: grid; gap: 0; }
  .nav__list li { border-bottom: 1px solid var(--line); }
  .nav__list a {
    width: 100%;
    padding: 14px 0;
    font-family: var(--serif);
    font-size: clamp(27px, 7vw, 38px);
    letter-spacing: -0.03em;
    text-transform: none;
    color: var(--ink-soft);
  }
  .nav__list a::after { display: none; }
  .nav__list a[aria-current="page"] { color: var(--accent); }
  .nav__num {
    display: inline;
    min-width: 24px;
    font-family: var(--mono);
    font-size: 9px;
    color: var(--faint);
  }
  .nav__foot {
    display: block;
    margin-top: 26px;
    font-family: var(--mono);
    font-size: 9px;
    line-height: 1.8;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--faint);
  }
  .nav-toggle { display: inline-flex; }

  .hero__grid { grid-template-columns: 1fr; gap: 44px; }
  .hero__side { padding-top: 0; max-width: 560px; }
  .hero__name { font-size: clamp(58px, 13vw, 112px); }
  .hero__intro { max-width: 56ch; }

  .s-head { gap: 10px 24px; }
  .s-index { grid-column: 1 / 13; padding-top: 8px; }
  .s-title { grid-column: 1 / 9; }
  .s-intro { grid-column: 1 / 9; margin-top: 6px; }

  .about__body { grid-column: 1 / 9; }
  .about__aside { grid-column: 9 / 13; }
  .security__aside { grid-column: 1 / 13; }
  .security__aside > .ethics { position: static; }
  .security__count { position: static; }
  .lab-list { grid-column: 1 / 13; margin-top: 10px; }
  .gh-profile { grid-column: 1 / 6; }
  .gh-repos { grid-column: 6 / 13; }
  .contact__primary { grid-column: 1 / 8; }
  .contact__side { grid-column: 8 / 13; }
  .author__intro { grid-column: 1 / 13; }
  .book-grid { grid-column: 1 / 13; margin-top: 10px; }
}

@media (max-width: 760px) {
  body { font-size: 16px; }

  .section { padding-block: 64px; }
  .hero__grid { padding-bottom: 56px; }
  .hero__name { font-size: clamp(52px, 16vw, 92px); }
  .hero__headline { font-size: 20px; }

  .project { grid-template-columns: 1fr; gap: 20px; padding: 34px 0; }
  .project__media,
  .project.is-alt .project__media { grid-column: 1 / -1; order: 1; }
  .project__body,
  .project.is-alt .project__body { grid-column: 1 / -1; order: 2; }
  .project:first-child { padding-top: 0; }
  .project__desc { max-width: none; }
  .art { aspect-ratio: 4 / 3; }

  .about__body, .about__aside { grid-column: 1 / 13; }
  .about__aside { margin-top: 10px; }
  .s-title { grid-column: 1 / 13; font-size: clamp(32px, 9vw, 46px); }
  .s-intro { grid-column: 1 / 13; margin-top: 8px; max-width: 52ch; }

  .security__grid { gap: 18px; }
  .lab { grid-template-columns: 1fr; gap: 8px; padding: 22px 0; }
  .lab__meta { flex-direction: row; align-items: center; gap: 12px; }
  .lab__links { flex-direction: row; align-items: center; padding-top: 6px; }

  .ai-grid { grid-template-columns: 1fr; }
  .ai-card { min-height: 0; }
  .ai-card__badge { position: static; margin-top: 16px; align-self: flex-start; }

  .gh__body, .github__body { display: block; }
  .gh-profile,
  .gh-repos { grid-column: 1 / -1; }
  .gh-repos { margin-top: 20px; }
  .repo a { grid-template-columns: 1fr; }
  .repo__meta { grid-column: 1 / 2; grid-row: auto; margin-top: 6px; }

  .writing-item__link { grid-template-columns: 34px minmax(0, 1fr); gap: 12px; }
  .writing-item__link.has-cover { grid-template-columns: 34px minmax(0, 1fr); }
  .writing-item__link.has-cover .writing-item__thumb {
    grid-column: 2 / 3;
    width: 100%;
    max-width: 220px;
    margin-bottom: 4px;
  }
  .writing-item__link.has-cover .writing-item__main,
  .writing-item__link.has-cover .writing-item__meta { grid-column: 2 / 3; }
  .writing-item__meta { grid-column: 2 / 3; justify-content: flex-start; padding-top: 0; }
  .writing-item__num { padding-top: 4px; }

  .contact__primary, .contact__side { grid-column: 1 / 13; }
  .contact__side { margin-top: 20px; }

  .book-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .foot-inner { flex-direction: column; align-items: flex-start; gap: 16px; }
}

@media (max-width: 520px) {
  :root { --gutter: 18px; }
  .brand__sub { display: none; }
  .brand__name { font-size: 10.5px; }
  .hero__actions .btn { flex: 1 1 100%; }
  .hero__index ul { grid-template-columns: 1fr; }
  .filters { gap: 6px; }
  .filter { padding: 7px 9px; font-size: 9px; }
  .book-grid { grid-template-columns: 1fr 1fr; gap: 14px; }
  .idcard__mono { font-size: 46px; }
  .terminal__body { font-size: 11px; }
  .terminal__tag { display: none; }
  .contact__actions .btn { width: 100%; }
}

/* 17. MOTION & PRINT ------------------------------------------------------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
  .t-line { opacity: 1; transform: none; }
  .ticker__track { animation: none; transform: none; }
  .t-caret { animation: none; }
  .reveal { opacity: 1; transform: none; }
  .filter,.project,.ai-card,.link-arrow { transition: none !important; }
}

@media print {
  body { background: #fff; color: #111; }
  .site-head, .ticker, .scroll-progress, .hero__side, .nav-toggle, .filters,
  .dev-note, .dev-panel, .skip-link, .site-foot .foot__links { display: none !important; }
  .section, .hero { border: 0; padding-block: 20px; }
  .s-title, .hero__name, .project__title, .lab__title, .ai-card__title, .writing-item__title { color: #111; }
  .s-intro, .hero__intro, .project__desc, .lab__desc, .writing-item__desc { color: #333; }
  a { text-decoration: underline; }
  .art { border: 1px solid #ccc; }
}