/* ════════════════════════════════════════════════════════════
   robinx0 — site styles v6
   Fonts: Anton / Namdhinggo / Nova Mono / Roboto / Inter / Inconsolata
   ════════════════════════════════════════════════════════════ */

:root {
  --bg:    #0a0a11;
  --bg-2:  #0d0d16;
  --s1:    #11111b;
  --s2:    #161622;
  --s3:    #1b1b28;
  --b1:    #20202e;
  --b2:    #2b2b3c;
  --b3:    #39394c;

  --red:      #ef4444;
  --red-hot:  #f87171;
  --red-dim:  rgba(239,68,68,.55);
  --red-ink:  rgba(239,68,68,.12);
  --red-wash: rgba(239,68,68,.04);

  --ok:    #10b981;
  --wip:   #f59e0b;
  --alpha: #a855f7;
  --cyan:  #22d3ee;
  --blue:  #3b82f6;

  --t1: #f2f2f7;
  --t2: #a6a6b8;
  --t3: #70708a;
  --t4: #50506a;
  --t5: #323246;

  --f-hero:      'Anton', sans-serif;
  --f-editorial: 'Namdhinggo', serif;
  --f-project:   'Nova Mono', monospace;
  --f-headline:  'Roboto', sans-serif;
  --f-body:      'Inter', sans-serif;
  --f-code:      'Inconsolata', monospace;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
body {
  font-family: var(--f-body);
  background:
    radial-gradient(ellipse 70% 40% at 50% -10%, rgba(239,68,68,.06), transparent 70%),
    radial-gradient(ellipse 50% 30% at 85% 15%, rgba(168,85,247,.03), transparent 70%),
    var(--bg);
  color: var(--t1);
  min-height: 100vh;
  overflow-x: hidden;
  font-size: 15.5px;
  line-height: 1.6;
  position: relative;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }

/* film grain */
body::before {
  content: ''; position: fixed; inset: 0;
  pointer-events: none; z-index: 100;
  opacity: .05; mix-blend-mode: overlay;
  background-image: 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='0.9' numOctaves='2' stitchTiles='stitch'/></filter><rect width='100%25' height='100%25' filter='url(%23n)'/></svg>");
}
.bg-grid {
  position: fixed; inset: 0; z-index: 0; pointer-events: none; opacity: .45;
  background-image:
    linear-gradient(rgba(239,68,68,.022) 1px, transparent 1px),
    linear-gradient(90deg, rgba(239,68,68,.022) 1px, transparent 1px);
  background-size: 80px 80px;
  mask-image: radial-gradient(ellipse 80% 50% at 50% 0%, black 40%, transparent);
  -webkit-mask-image: radial-gradient(ellipse 80% 50% at 50% 0%, black 40%, transparent);
}

/* ─── nav ─── */
.nav {
  position: fixed; top: 18px; left: 50%; transform: translateX(-50%); z-index: 50;
  display: flex; align-items: center; gap: 2px;
  background: rgba(13,13,22,.88);
  backdrop-filter: blur(28px) saturate(150%);
  -webkit-backdrop-filter: blur(28px) saturate(150%);
  border: 1px solid var(--b1);
  border-radius: 50px; padding: 4px;
  box-shadow: 0 8px 32px rgba(0,0,0,.5), 0 0 0 1px rgba(255,255,255,.02);
}
.nav-item {
  font-family: var(--f-headline);
  font-size: 13.5px; font-weight: 500;
  color: var(--t3);
  padding: 9px 20px;
  border-radius: 50px;
  transition: color .2s;
  letter-spacing: -0.01em;
}
.nav-item:hover { color: var(--t1); }
.nav-item.on { color: var(--t1); background: var(--s2); }

/* ─── page frame ─── */
.scroll { position: relative; z-index: 1; padding-top: 76px; min-height: 100vh; }
.pg { max-width: 1120px; margin: 0 auto; padding: 0 44px 60px; }

/* ─── corner bracket utility ─── */
.brackets-4 { position: relative; }
.brackets-4 > .br-tl, .brackets-4 > .br-tr, .brackets-4 > .br-bl, .brackets-4 > .br-br {
  position: absolute; width: 13px; height: 13px;
  border-color: var(--red); border-style: solid; border-width: 0;
  pointer-events: none; z-index: 2;
}
.brackets-4 > .br-tl { top: -1px; left: -1px; border-top-width: 2px; border-left-width: 2px; }
.brackets-4 > .br-tr { top: -1px; right: -1px; border-top-width: 2px; border-right-width: 2px; }
.brackets-4 > .br-bl { bottom: -1px; left: -1px; border-bottom-width: 2px; border-left-width: 2px; }
.brackets-4 > .br-br { bottom: -1px; right: -1px; border-bottom-width: 2px; border-right-width: 2px; }

/* ─── section scaffolding ─── */
.sec { padding: 36px 0 4px; }
.sec-hdr {
  display: flex; align-items: baseline; justify-content: space-between;
  margin-bottom: 18px; gap: 20px; flex-wrap: wrap;
}
.label {
  font-family: var(--f-code);
  font-size: 11.5px; font-weight: 500;
  color: var(--red); text-transform: uppercase; letter-spacing: 3px;
  display: inline-flex; align-items: center; gap: 10px;
}
.label::before { content: ''; width: 26px; height: 1px; background: var(--red); }
.sec-sub {
  font-family: var(--f-code);
  font-size: 13px; color: var(--t3);
  letter-spacing: .5px; margin-top: 8px; font-weight: 400;
}
.more {
  font-family: var(--f-code);
  font-size: 11.5px; color: var(--t3); font-weight: 500;
  letter-spacing: 2px; text-transform: uppercase;
  transition: color .2s;
}
.more:hover { color: var(--red); }

/* ─── page title ─── */
.pg-title-wrap { padding: 28px 0 8px; position: relative; }
.pg-label {
  font-family: var(--f-code);
  font-size: 11.5px; font-weight: 500;
  color: var(--red); letter-spacing: 3px; text-transform: uppercase;
  display: inline-flex; align-items: center; gap: 10px;
  margin-bottom: 14px;
}
.pg-label::before { content: ''; width: 26px; height: 1px; background: var(--red); }
.pg-title {
  font-family: var(--f-editorial);
  font-size: clamp(42px, 6vw, 68px); font-weight: 700;
  letter-spacing: -2px; line-height: .95; color: var(--t1);
}
.pg-title em {
  font-style: italic; color: var(--red); font-weight: 700;
}
.pg-sub {
  font-family: var(--f-body);
  font-size: 16px; color: var(--t2);
  max-width: 640px; margin-top: 14px; line-height: 1.6;
}
.pg-count {
  display: inline-block;
  font-family: var(--f-code);
  font-size: 14px; color: var(--red); font-weight: 600;
  padding: 3px 10px; margin-left: 6px;
  border-radius: 7px; background: var(--red-ink);
  vertical-align: middle; letter-spacing: 1px;
}

/* ════════════════════════════════════════════════════════════
   HERO
   ════════════════════════════════════════════════════════════ */
.hero {
  padding: 24px 0 8px;
  position: relative;
  display: flex; flex-direction: column; justify-content: center;
}
.hero::before {
  content: ''; position: absolute; inset: 0; pointer-events: none;
  background-image: repeating-linear-gradient(
    to bottom, transparent 0, transparent 3px,
    rgba(255,255,255,.01) 3px, rgba(255,255,255,.01) 4px
  );
  opacity: .7; z-index: 0;
}
.hero::after {
  content: ''; position: absolute;
  top: -5%; left: 20%; width: 60%; height: 80%;
  background: radial-gradient(ellipse at center, rgba(239,68,68,.08), transparent 60%);
  filter: blur(40px); pointer-events: none; z-index: 0;
}
.hero-bgtext {
  position: absolute; top: 10%; right: -30px;
  font-family: var(--f-hero);
  font-size: clamp(150px, 22vw, 240px);
  font-weight: 400; letter-spacing: -4px;
  color: transparent;
  -webkit-text-stroke: 1px rgba(239,68,68,.09);
  line-height: .8; z-index: 0;
  pointer-events: none; user-select: none;
  text-transform: uppercase;
}
.hero-grid {
  display: grid;
  grid-template-columns: 1.75fr 1fr;
  gap: 40px;
  align-items: start;
  position: relative; z-index: 2;
}
.h-tag {
  display: inline-flex; align-items: center; gap: 10px;
  font-family: var(--f-code);
  font-size: 11px; font-weight: 500;
  color: var(--red); letter-spacing: 2.5px; text-transform: uppercase;
  padding: 6px 13px;
  border: 1px solid rgba(239,68,68,.22);
  background: var(--red-ink);
  border-radius: 7px;
}
.h-tag::before { content: '//'; color: var(--t4); }
.h-name {
  font-family: var(--f-hero);
  font-size: clamp(72px, 11vw, 148px);
  font-weight: 400; letter-spacing: -2.5px;
  line-height: .9;
  margin-top: 18px; position: relative;
  color: var(--t1);
  text-transform: uppercase;
}
.h-name .n-row { display: block; }
.h-name .n-accent {
  display: inline-block;
  background: var(--red); color: #0a0a11;
  padding: 0 12px 3px; margin-right: 2px;
  line-height: .9;
  border-radius: 7px;
}
.h-name em { font-style: normal; color: var(--red); }
.h-subline {
  font-family: var(--f-code);
  font-size: 11.5px; color: var(--t3);
  letter-spacing: 2.5px; text-transform: uppercase;
  margin-top: 18px; padding-top: 12px;
  border-top: 1px solid var(--b1);
  display: flex; align-items: center; gap: 10px;
  flex-wrap: wrap;
}
.h-subline .sep { color: var(--red); font-weight: 600; }
.h-subline .hl { color: var(--t1); }
.h-desc {
  font-family: var(--f-body);
  font-size: 16px; color: var(--t2);
  margin-top: 20px; max-width: 540px; line-height: 1.6;
}
.h-desc strong { color: var(--t1); font-weight: 500; }
.h-desc .red-hl {
  color: var(--red);
  border-bottom: 1px dashed rgba(239,68,68,.4);
  font-weight: 500;
}
.h-btns { display: flex; gap: 10px; margin-top: 26px; flex-wrap: wrap; }

.btn-p {
  font-family: var(--f-headline);
  font-size: 14px; font-weight: 500;
  padding: 12px 22px; border-radius: 10px;
  background: var(--red); color: #0a0a11;
  transition: all .2s;
  display: inline-flex; align-items: center; gap: 10px;
  letter-spacing: -0.01em; position: relative; overflow: hidden;
  box-shadow: 0 4px 20px rgba(239,68,68,.2);
}
.btn-p::before {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,.25), transparent);
  transform: translateX(-100%); transition: transform .5s;
}
.btn-p:hover {
  background: var(--red-hot);
  transform: translateY(-1px);
  box-shadow: 0 8px 28px rgba(239,68,68,.35);
}
.btn-p:hover::before { transform: translateX(100%); }
.btn-p::after { content: '→'; font-family: var(--f-code); font-weight: 700; }
.btn-g {
  font-family: var(--f-headline);
  font-size: 14px; font-weight: 500;
  padding: 12px 22px; border-radius: 10px;
  border: 1px solid var(--b2); background: transparent; color: var(--t2);
  transition: all .2s; letter-spacing: -0.01em;
  display: inline-flex; align-items: center; gap: 8px;
}
.btn-g:hover { color: var(--t1); border-color: var(--red); }

/* ─── operator profile card ─── */
.op-card {
  background: rgba(17, 17, 27, 0.5);
  backdrop-filter: blur(22px) saturate(160%);
  -webkit-backdrop-filter: blur(22px) saturate(160%);
  border: 1px solid rgba(255, 255, 255, 0.07);
  border-radius: 10px;
  padding: 18px 20px 16px;
  position: relative;
  z-index: 1;
  box-shadow: 0 12px 40px rgba(0,0,0,.4), inset 0 1px 0 rgba(255,255,255,.06);
}
.op-head {
  display: flex; justify-content: space-between; align-items: center;
  font-family: var(--f-code);
  font-size: 10px; letter-spacing: 2.5px; color: var(--t4); font-weight: 500;
  margin-bottom: 14px; padding-bottom: 10px;
  border-bottom: 1px dashed var(--b2);
  text-transform: uppercase;
}
.op-head-dots { display: flex; gap: 5px; }
.op-head-dots span { width: 6px; height: 6px; border-radius: 50%; background: var(--b3); }
.op-head-dots span:first-child { background: var(--red); box-shadow: 0 0 6px rgba(239,68,68,.5); }

.op-row {
  display: flex; justify-content: space-between; gap: 10px;
  padding: 5px 0;
  font-family: var(--f-code);
  font-size: 12px;
}
.op-row + .op-row { border-top: 1px solid rgba(32,32,46,.5); }
.op-k { color: var(--t4); font-weight: 400; letter-spacing: .2px; }
.op-v { color: var(--t1); text-align: right; font-weight: 500; }
.op-v.accent { color: var(--red); }
.op-v.ok {
  color: var(--ok);
  display: inline-flex; align-items: center; gap: 6px;
}
.op-v.ok::before {
  content: ''; width: 6px; height: 6px; border-radius: 50%;
  background: var(--ok); box-shadow: 0 0 8px rgba(16,185,129,.6);
}

.op-socials {
  display: flex; flex-wrap: wrap; gap: 6px;
  margin-top: 14px; padding-top: 12px;
  border-top: 1px dashed var(--b2);
}
.op-pill {
  display: inline-flex; align-items: center; gap: 7px;
  font-family: var(--f-code);
  font-size: 11px; font-weight: 500;
  color: var(--t2);
  padding: 6px 11px 6px 9px;
  border: 1px solid var(--b2);
  background: rgba(255,255,255,.01);
  border-radius: 50px;
  transition: all .2s;
  letter-spacing: .2px;
}
.op-pill svg { width: 12px; height: 12px; flex-shrink: 0; }
.op-pill:hover { color: var(--t1); border-color: var(--red); background: var(--red-wash); }
.op-pill:hover svg { color: var(--red); }

.op-flip-hint {
  margin-top: 14px;
  padding-top: 12px;
  border-top: 1px dashed var(--b2);
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 9px;
  font-family: var(--f-code);
  font-size: 10px;
  color: var(--t3);
  letter-spacing: 2px;
  text-transform: uppercase;
  transition: color .25s;
  font-weight: 500;
}
.op-wrap:hover .op-flip-hint { color: var(--red); }
.fh-icon {
  color: var(--red);
  font-size: 14px;
  display: inline-block;
  animation: fhSpin 4s linear infinite;
}
@keyframes fhSpin { to { transform: rotate(360deg); } }

/* ════════════════════════════════════════════════════════════
   STATS STRIP
   ════════════════════════════════════════════════════════════ */
.strip {
  margin-top: 36px;
  display: grid;
  grid-template-columns: repeat(var(--cols, 6), 1fr);
  border: 1px solid var(--b1);
  border-radius: 14px;
  overflow: hidden;
  background: linear-gradient(180deg, rgba(255,255,255,.012), transparent);
}
@media (max-width: 1100px) {
  .strip { grid-template-columns: repeat(4, 1fr); }
  .strip-c:nth-child(4n) { border-right: none; }
}
@media (max-width: 720px) {
  .strip { grid-template-columns: repeat(2, 1fr); }
  .strip-c:nth-child(2n) { border-right: none; }
}
.strip-c {
  padding: 18px 16px;
  border-right: 1px solid var(--b1);
  position: relative; overflow: hidden;
  transition: background .25s;
}
.strip-c:last-child { border-right: none; }
.strip-c:hover { background: var(--red-wash); }
.strip-c::before {
  content: ''; position: absolute;
  top: 0; right: -20px; width: 36px; height: 2px;
  background: var(--red); transform: skewX(-25deg); opacity: .5;
}
.strip-v {
  font-family: var(--f-editorial);
  font-size: 38px; font-weight: 700; letter-spacing: -2px;
  color: var(--t1); line-height: 1;
}
.strip-v .suffix { color: var(--red); }
.strip-v .sub-placements {
  font-size: 17px; color: var(--t3); letter-spacing: -1px; margin-left: 3px;
  font-weight: 500;
}
.strip-l {
  font-family: var(--f-code);
  font-size: 9.5px; color: var(--t3);
  margin-top: 7px; letter-spacing: 1.5px;
  text-transform: uppercase; font-weight: 500;
}
.strip-certs {
  font-family: var(--f-code);
  font-size: 9px; color: var(--t4);
  margin-top: 4px; letter-spacing: .5px;
  font-weight: 500;
  line-height: 1.4;
}

/* ════════════════════════════════════════════════════════════
   TOOLS GRID (projects)
   ════════════════════════════════════════════════════════════ */
.tools-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}
.tool {
  background: linear-gradient(180deg, var(--s1), var(--s2));
  border: 1px solid var(--b1);
  border-radius: 14px;
  padding: 22px 22px 18px;
  transition: all .28s cubic-bezier(.16,1,.3,1);
  position: relative; display: block; overflow: hidden;
  box-shadow: 0 10px 36px rgba(0,0,0,.35), inset 0 1px 0 rgba(255,255,255,.04);
}
.tool::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 1.5px;
  background: var(--red);
  transform: scaleX(0); transform-origin: left;
  transition: transform .4s ease;
}
.tool:hover {
  border-color: rgba(239,68,68,.35);
  transform: translateY(-3px);
  box-shadow: 0 20px 50px rgba(0,0,0,.45), 0 0 0 1px rgba(239,68,68,.1), inset 0 1px 0 rgba(255,255,255,.05);
}
.tool:hover::before { transform: scaleX(1); }
.tool:hover .tool-arrow { color: var(--red); transform: translate(4px,-4px); }

.tool-top {
  display: flex; align-items: flex-start; justify-content: space-between;
  gap: 14px; margin-bottom: 6px;
}
.tool-name {
  font-family: var(--f-project);
  font-size: 28px; font-weight: 400;
  letter-spacing: -0.5px; color: var(--t1);
  line-height: 1;
}
.tool-id {
  font-family: var(--f-code);
  font-size: 9.5px; letter-spacing: 2px; font-weight: 500;
  color: var(--t4); margin-top: 8px; text-transform: uppercase;
}
.tool-status {
  font-family: var(--f-code);
  font-size: 9.5px; font-weight: 600;
  letter-spacing: 1.5px;
  padding: 4px 9px; border-radius: 7px;
  text-transform: uppercase; white-space: nowrap; flex-shrink: 0;
}
.tool-status.ok    { color: var(--ok);    background: rgba(16,185,129,.08);  border: 1px solid rgba(16,185,129,.25); }
.tool-status.wip   { color: var(--wip);   background: rgba(245,158,11,.08);  border: 1px solid rgba(245,158,11,.25); }
.tool-status.alpha { color: var(--alpha); background: rgba(168,85,247,.08);  border: 1px solid rgba(168,85,247,.25); }
.tool-status.priv  { color: var(--t3);    background: rgba(255,255,255,.03); border: 1px solid var(--b2); }

.tool-desc {
  font-family: var(--f-body);
  font-size: 14px; color: var(--t2);
  line-height: 1.6; margin: 12px 0 16px;
}
.tool-feats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6px 20px;
  margin-bottom: 18px;
  font-family: var(--f-code);
  font-size: 11.5px; color: var(--t2); font-weight: 500;
  list-style: none;
}
.tool-feat { display: flex; align-items: center; gap: 9px; padding: 2px 0; }
.tool-feat::before { content: '›'; color: var(--red); font-weight: 700; }

.tool-foot {
  display: flex; align-items: center; justify-content: space-between;
  gap: 12px; padding-top: 14px;
  border-top: 1px dashed var(--b2);
}
.tool-stack { display: flex; flex-wrap: wrap; gap: 5px; }
.stack {
  font-family: var(--f-code);
  font-size: 10px; color: var(--t3); font-weight: 500;
  padding: 3px 8px;
  border: 1px solid var(--b2); border-radius: 5px;
  letter-spacing: .3px;
}
.tool-arrow {
  font-family: var(--f-code);
  font-size: 18px; font-weight: 700;
  color: var(--t4); transition: all .25s ease;
  flex-shrink: 0;
}
.tool-links { display: flex; gap: 10px; align-items: center; }
.tool-link {
  font-family: var(--f-code);
  font-size: 10.5px; color: var(--t3); letter-spacing: .3px;
  text-transform: uppercase; font-weight: 600;
  transition: color .2s;
}
.tool-link:hover { color: var(--red); }
.tool-tags {
  display: flex; flex-wrap: wrap; gap: 5px;
  padding-top: 10px; margin-top: 2px;
  border-top: 1px solid var(--b1);
}
.tool-tag {
  font-family: var(--f-code); font-size: 10px; color: var(--t4);
  letter-spacing: .3px;
}

/* ════════════════════════════════════════════════════════════
   WRITEUPS LIST
   ════════════════════════════════════════════════════════════ */
.wu-list { display: flex; flex-direction: column; }
.wu {
  display: grid;
  grid-template-columns: 50px 60px 1fr auto;
  gap: 14px; align-items: center;
  padding: 16px 10px 16px 0;
  border-bottom: 1px solid var(--b1);
  transition: all .2s; position: relative;
  color: inherit;
}
.wu:first-child { border-top: 1px solid var(--b1); }
.wu::before {
  content: ''; position: absolute;
  left: 0; top: 0; width: 2.5px; height: 100%;
  background: var(--red);
  transform: scaleY(0); transform-origin: bottom;
  transition: transform .2s ease;
}
.wu:hover { background: rgba(239,68,68,.025); padding-left: 14px; }
.wu:hover::before { transform: scaleY(1); }
.wu:hover .wu-title { color: var(--red); }
.wu:hover .wu-arrow { transform: translateX(4px); color: var(--red); }
.wu.is-read { opacity: .55; }
.wu.is-read:hover { opacity: 1; }
.wu.is-read .wu-title::after {
  content: ' ✓'; color: var(--ok); font-size: 13px; font-weight: 600;
}

.wu-idx {
  font-family: var(--f-code);
  font-size: 10.5px; color: var(--t4);
  letter-spacing: 1px; font-weight: 600;
}
.wu-date {
  font-family: var(--f-code);
  font-size: 11.5px; color: var(--t3);
  letter-spacing: .2px; font-weight: 500;
}
.wu-body { min-width: 0; }
.wu-title {
  font-family: var(--f-editorial);
  font-size: 18px; font-weight: 600;
  color: var(--t1); transition: color .2s; line-height: 1.3;
  letter-spacing: -.3px;
}
.wu-meta {
  display: flex; align-items: center; gap: 10px;
  margin-top: 6px;
  font-family: var(--f-code);
  font-size: 10.5px; color: var(--t3); letter-spacing: .2px;
  flex-wrap: wrap;
}
.wu-cat {
  display: inline-flex; align-items: center; gap: 7px;
  text-transform: uppercase; letter-spacing: 1.8px; font-weight: 500;
}
.wu-cat::before { content: '['; color: var(--t4); }
.wu-cat::after  { content: ']'; color: var(--t4); }
.wu-cat .dot { width: 6px; height: 6px; border-radius: 50%; background: var(--red); }
.wu-cat.web    .dot { background: var(--cyan); }
.wu-cat.bin    .dot { background: var(--wip); }
.wu-cat.mal    .dot { background: var(--ok); }
.wu-cat.net    .dot { background: var(--blue); }
.wu-cat.red-t  .dot { background: var(--red); }
.wu-cat.edr    .dot { background: var(--red); }
.wu-cat.mob    .dot { background: var(--ok); }
.wu-cat.c2     .dot { background: var(--wip); }
.wu-cat.ctf    .dot { background: var(--alpha); }
.wu-cat.crev   .dot { background: var(--blue); }

.wu-diff {
  padding: 2.5px 8px; border-radius: 5px; font-weight: 600;
  border: 1px solid; letter-spacing: 1.2px; font-size: 9.5px;
}
.wu-diff.easy   { color: var(--ok);    border-color: rgba(16,185,129,.3); background: rgba(16,185,129,.06); }
.wu-diff.med    { color: var(--wip);   border-color: rgba(245,158,11,.3); background: rgba(245,158,11,.06); }
.wu-diff.hard   { color: var(--red);   border-color: rgba(239,68,68,.3);  background: rgba(239,68,68,.06); }
.wu-diff.insane { color: var(--alpha); border-color: rgba(168,85,247,.3); background: rgba(168,85,247,.06); }
.wu-arrow {
  font-family: var(--f-code);
  font-size: 18px; font-weight: 700;
  color: var(--t4); transition: all .2s;
}

.wu-empty { padding: 40px 0; text-align: center; color: var(--t3); font-family: var(--f-code); }

/* ════════════════════════════════════════════════════════════
   SEARCH + FILTER CHIPS (writeups page)
   ════════════════════════════════════════════════════════════ */
.search-wrap {
  position: relative; display: flex; align-items: center;
  margin: 20px 0 10px;
}
.search-icon { position: absolute; left: 16px; color: var(--t4); pointer-events: none; }
.search-input {
  flex: 1; font-family: var(--f-body); font-size: 14px; color: var(--t1);
  background: var(--s1); border: 1px solid var(--b1); border-radius: 10px;
  padding: 12px 52px 12px 44px; outline: none;
  transition: border-color .2s, background .2s;
}
.search-input::placeholder { color: var(--t4); font-family: var(--f-code); letter-spacing: .3px; }
.search-input:focus { border-color: rgba(239,68,68,.35); background: var(--s2); }
.search-kbd {
  position: absolute; right: 14px;
  font-family: var(--f-code); font-size: 10px; color: var(--t3);
  border: 1px solid var(--b2); border-radius: 5px; padding: 2px 7px;
  background: var(--s2); pointer-events: none;
}

.filters {
  display: flex; flex-wrap: wrap; gap: 7px;
  margin: 12px 0 12px;
  padding: 14px;
  background: var(--s1);
  border: 1px solid var(--b1);
  border-radius: 14px;
}
.fb {
  font-family: var(--f-code);
  font-size: 11px; font-weight: 500;
  color: var(--t2); background: transparent;
  padding: 7px 13px;
  border: 1px solid var(--b2);
  border-radius: 7px;
  cursor: pointer;
  transition: all .2s;
  letter-spacing: .3px;
  text-transform: uppercase;
}
.fb:hover { color: var(--t1); border-color: var(--t3); }
.fb.on {
  color: var(--red); background: var(--red-ink);
  border-color: rgba(239,68,68,.4);
}

.filter-meta {
  font-family: var(--f-code);
  font-size: 11px; color: var(--t3);
  letter-spacing: .5px; margin-bottom: 14px;
}
.filter-meta .count { color: var(--red); font-weight: 600; }

/* Legacy ID used by JS — styled identically to .filter-meta .count */
.filter-count { color: var(--red); font-weight: 600; }

/* ════════════════════════════════════════════════════════════
   CATEGORY CHIPS
   ════════════════════════════════════════════════════════════ */
.cat-chips { display: flex; flex-wrap: wrap; gap: 7px; }
.chip {
  display: inline-flex; align-items: center; gap: 9px;
  font-family: var(--f-code);
  font-size: 11px; color: var(--t2); font-weight: 500;
  padding: 8px 13px;
  border: 1px solid var(--b2);
  border-radius: 7px;
  transition: all .2s;
  letter-spacing: .3px;
  background: var(--s1);
  position: relative;
}
.chip::before {
  content: ''; width: 6px; height: 6px; border-radius: 50%;
  background: var(--red); flex-shrink: 0;
}
.chip.web::before    { background: var(--cyan); }
.chip.bin::before    { background: var(--wip); }
.chip.mal::before    { background: var(--ok); }
.chip.net::before    { background: var(--blue); }
.chip.red-t::before  { background: var(--red); }
.chip.edr::before    { background: var(--red); }
.chip.mob::before    { background: var(--ok); }
.chip.c2::before     { background: var(--wip); }
.chip.ctf::before    { background: var(--alpha); }
.chip.crev::before   { background: var(--blue); }
.chip:hover { color: var(--t1); border-color: var(--red); background: var(--red-wash); }
.chip-count {
  font-family: var(--f-code);
  font-size: 9.5px; color: var(--red); font-weight: 700;
  padding: 2px 6px; border-radius: 5px;
  background: var(--red-ink); letter-spacing: 1px;
}
.chip-count.has-read { color: var(--ok); background: rgba(16,185,129,.1); }
.chip-count.all-read::before { content: '✓ '; color: var(--ok); }

/* ════════════════════════════════════════════════════════════
   ABOUT PAGE
   ════════════════════════════════════════════════════════════ */
.bio-card {
  display: grid;
  grid-template-columns: 110px 1fr;
  gap: 24px;
  padding: 22px;
  background: linear-gradient(180deg, var(--s1), var(--s2));
  border: 1px solid var(--b1);
  border-radius: 14px;
  box-shadow: 0 10px 36px rgba(0,0,0,.35), inset 0 1px 0 rgba(255,255,255,.04);
}
.bio-av {
  width: 110px; height: 110px;
  border-radius: 12px;
  border: 1px solid var(--b2);
  background: linear-gradient(135deg, var(--s2), var(--s3));
  display: flex; align-items: center; justify-content: center;
  overflow: hidden;
  position: relative;
}
.bio-av img {
  width: 100%; height: 100%;
  object-fit: cover;
  position: absolute; inset: 0;
  z-index: 2;
}
.bio-av-fb {
  font-family: var(--f-hero);
  font-size: 40px; color: var(--red);
  letter-spacing: -1px;
  z-index: 1;
}
.bio-av::after {
  content: ''; position: absolute; inset: 0;
  background: radial-gradient(ellipse at center, transparent 40%, rgba(239,68,68,.1));
  pointer-events: none; z-index: 3;
}
.bio-main { display: flex; flex-direction: column; justify-content: center; }
.bio-name {
  font-family: var(--f-editorial);
  font-size: 30px; font-weight: 700;
  letter-spacing: -1px; color: var(--t1); line-height: 1;
}
.bio-role {
  font-family: var(--f-code);
  font-size: 11.5px; color: var(--t3); font-weight: 500;
  margin-top: 10px; letter-spacing: 2px; text-transform: uppercase;
  display: flex; flex-wrap: wrap; gap: 8px; align-items: center;
}
.bio-role .sep { color: var(--red); }
.bio-text {
  font-family: var(--f-body);
  font-size: 15.5px; color: var(--t2);
  line-height: 1.7; margin-top: 14px; max-width: 640px;
}
.bio-text strong { color: var(--t1); font-weight: 500; }
.bio-text + .bio-text { margin-top: 12px; }
.bio-links {
  display: flex; gap: 8px; flex-wrap: wrap; margin-top: 16px;
}
.bio-link {
  font-family: var(--f-code); font-size: 11px; letter-spacing: .5px;
  color: var(--t2); border: 1px solid var(--b2);
  padding: 7px 13px; border-radius: 7px;
  transition: all .2s; font-weight: 500;
}
.bio-link:hover { color: var(--red); border-color: var(--red); background: var(--red-wash); }

/* timeline */
.tl {
  display: grid;
  grid-template-columns: 160px 1fr;
  gap: 24px;
  padding: 18px 20px;
  background: linear-gradient(180deg, var(--s1), var(--s2));
  border: 1px solid var(--b1);
  border-left: 3px solid var(--red);
  border-radius: 10px;
  margin-bottom: 12px;
  transition: all .2s;
}
.tl:hover {
  border-color: var(--red);
  border-left-color: var(--red);
  transform: translateX(4px);
}
.tl.blue  { border-left-color: var(--blue); }
.tl.green { border-left-color: var(--ok); }
.tl.amber { border-left-color: var(--wip); }

.tl-date {
  font-family: var(--f-code);
  font-size: 11px; color: var(--red);
  font-weight: 600; letter-spacing: 2px;
  text-transform: uppercase;
}
.tl.blue  .tl-date { color: var(--blue); }
.tl.green .tl-date { color: var(--ok); }
.tl.amber .tl-date { color: var(--wip); }
.tl-role {
  font-family: var(--f-headline);
  font-size: 18px; font-weight: 500;
  color: var(--t1); letter-spacing: -0.01em;
}
.tl-org {
  font-family: var(--f-code);
  font-size: 12px; color: var(--t3);
  margin-top: 4px; letter-spacing: .3px;
}
.tl-body {
  font-family: var(--f-body);
  font-size: 14px; color: var(--t2);
  line-height: 1.6; margin-top: 10px;
}
.tl-body ul { list-style: none; padding: 0; }
.tl-body li { padding-left: 16px; position: relative; margin-bottom: 6px; }
.tl-body li::before {
  content: '›'; position: absolute; left: 0;
  color: var(--red); font-family: var(--f-code); font-weight: 700;
}

/* cert cards grid */
.certs-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(210px, 1fr));
  gap: 12px;
}
.cert {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 14px;
  padding: 16px 16px 12px;
  background: linear-gradient(165deg, var(--s1) 0%, rgba(0,0,0,.18) 100%);
  border: 1px solid var(--b1);
  border-radius: 10px;
  transition: transform .25s cubic-bezier(.16,1,.3,1),
              border-color .25s, box-shadow .25s, background .25s;
  cursor: pointer;
  color: inherit;
  overflow: hidden;
  min-height: 150px;
}
.cert::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(239,68,68,.45) 50%, transparent);
  opacity: 0;
  transition: opacity .25s;
}
.cert.green::before {
  background: linear-gradient(90deg, transparent, rgba(16,185,129,.45) 50%, transparent);
}
.cert:hover {
  transform: translateY(-3px);
  border-color: rgba(239,68,68,.4);
  background: linear-gradient(165deg, var(--s1) 0%, rgba(239,68,68,.045) 100%);
  box-shadow: 0 12px 28px rgba(0,0,0,.4), 0 0 0 1px rgba(239,68,68,.08);
}
.cert.green:hover {
  border-color: rgba(16,185,129,.4);
  background: linear-gradient(165deg, var(--s1) 0%, rgba(16,185,129,.045) 100%);
  box-shadow: 0 12px 28px rgba(0,0,0,.4), 0 0 0 1px rgba(16,185,129,.08);
}
.cert:hover::before { opacity: 1; }

.cert-head {
  display: flex; align-items: center; justify-content: space-between;
}
.cert-badge {
  width: 44px; height: 44px;
  border-radius: 50%;
  border: 1.5px solid var(--red);
  display: flex; align-items: center; justify-content: center;
  font-family: var(--f-code);
  font-size: 10px; font-weight: 700;
  color: var(--red); letter-spacing: .5px;
  flex-shrink: 0;
  background: radial-gradient(circle at 30% 28%, rgba(239,68,68,.18), var(--red-ink));
  box-shadow: 0 0 0 4px rgba(239,68,68,.04);
  transition: box-shadow .25s, transform .25s;
}
.cert:hover .cert-badge { box-shadow: 0 0 0 7px rgba(239,68,68,.07); transform: scale(1.04); }
.cert.green .cert-badge {
  border-color: var(--ok);
  color: var(--ok);
  background: radial-gradient(circle at 30% 28%, rgba(16,185,129,.18), rgba(16,185,129,.04));
  box-shadow: 0 0 0 4px rgba(16,185,129,.04);
}
.cert.green:hover .cert-badge { box-shadow: 0 0 0 7px rgba(16,185,129,.07); }

.cert-tag {
  font-family: var(--f-code);
  font-size: 8.5px; font-weight: 600;
  letter-spacing: 1.4px;
  text-transform: uppercase;
  padding: 4px 8px;
  border-radius: 4px;
  color: var(--red);
  border: 1px solid rgba(239,68,68,.22);
  background: rgba(239,68,68,.04);
}
.cert.green .cert-tag {
  color: var(--ok);
  border-color: rgba(16,185,129,.22);
  background: rgba(16,185,129,.04);
}

.cert-body { flex: 1; display: flex; flex-direction: column; justify-content: center; }
.cert-name {
  font-family: var(--f-headline);
  font-size: 14.5px; color: var(--t1); font-weight: 600;
  letter-spacing: -0.01em; line-height: 1.3;
  margin-bottom: 5px;
}
.cert-issuer {
  font-family: var(--f-code);
  font-size: 10.5px; color: var(--t3);
  letter-spacing: .3px;
}

.cert-foot {
  display: flex; align-items: center; justify-content: space-between;
  padding-top: 10px;
  border-top: 1px dashed var(--b1);
  font-family: var(--f-code);
  font-size: 10px;
  letter-spacing: .8px;
  text-transform: uppercase;
}
.cert-date { color: var(--t4); }
.cert-view {
  display: inline-flex; align-items: center; gap: 4px;
  color: var(--t3);
  transition: color .2s;
}
.cert-arrow {
  display: inline-block;
  transition: transform .25s cubic-bezier(.16,1,.3,1);
}
.cert:hover .cert-view { color: var(--red); }
.cert:hover .cert-arrow { transform: translate(2px, -2px); }
.cert.green:hover .cert-view { color: var(--ok); }

/* achievements */
.ach-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 10px;
}
.ach {
  padding: 16px 18px;
  background: var(--s1);
  border: 1px solid var(--b1);
  border-radius: 10px;
  transition: all .2s;
  border-top: 2px solid var(--red);
}
.ach.amber { border-top-color: var(--wip); }
.ach.alpha { border-top-color: var(--alpha); }
.ach.blue  { border-top-color: var(--blue); }
.ach:hover { transform: translateY(-2px); border-color: var(--b3); }
.ach-rank {
  font-family: var(--f-editorial);
  font-size: 28px; font-weight: 700;
  color: var(--red); letter-spacing: -1px; line-height: 1;
}
.ach.amber .ach-rank { color: var(--wip); }
.ach.alpha .ach-rank { color: var(--alpha); }
.ach.blue  .ach-rank { color: var(--blue); }
.ach-title {
  font-family: var(--f-headline);
  font-size: 14px; color: var(--t1); font-weight: 500;
  margin-top: 8px; letter-spacing: -0.01em;
}
.ach-meta {
  font-family: var(--f-code);
  font-size: 10.5px; color: var(--t3);
  margin-top: 3px; letter-spacing: .3px;
}

/* publications */
.pub {
  padding: 16px 18px;
  background: var(--s1);
  border: 1px solid var(--b1);
  border-radius: 10px;
  margin-bottom: 10px;
  border-left: 3px solid var(--alpha);
}
.pub-id {
  display: inline-block;
  font-family: var(--f-code);
  font-size: 10px; font-weight: 600;
  color: var(--alpha); letter-spacing: 1.5px;
  padding: 2px 7px;
  background: rgba(168,85,247,.08);
  border-radius: 5px;
  margin-bottom: 8px;
}
.pub-title {
  font-family: var(--f-editorial);
  font-size: 17px; color: var(--t1); font-weight: 600;
  line-height: 1.35; letter-spacing: -.3px;
}
.pub-authors {
  font-family: var(--f-body);
  font-size: 13px; color: var(--t2);
  margin-top: 6px; font-style: italic;
}
.pub-authors .me { color: var(--red); font-weight: 500; font-style: normal; }
.pub-venue {
  font-family: var(--f-code);
  font-size: 11px; color: var(--t3);
  margin-top: 6px; letter-spacing: .2px;
}

/* community */
.comm-card {
  padding: 20px 22px;
  background: linear-gradient(180deg, var(--s1), var(--s2));
  border: 1px solid var(--b1);
  border-radius: 14px;
  border-left: 3px solid var(--ok);
}
.comm-title {
  font-family: var(--f-headline);
  font-size: 18px; color: var(--t1); font-weight: 500;
  letter-spacing: -0.01em;
}
.comm-meta {
  font-family: var(--f-code);
  font-size: 11.5px; color: var(--ok);
  margin-top: 4px; letter-spacing: 1.5px; text-transform: uppercase; font-weight: 600;
}
.comm-body {
  font-family: var(--f-body);
  font-size: 14px; color: var(--t2);
  margin-top: 10px; line-height: 1.65;
}

/* skills matrix */
.skill-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 12px;
}
.skill-cat {
  padding: 16px 18px;
  background: var(--s1);
  border: 1px solid var(--b1);
  border-radius: 10px;
}
.skill-cat h4 {
  font-family: var(--f-code);
  font-size: 10.5px; color: var(--red);
  letter-spacing: 2px; text-transform: uppercase; font-weight: 600;
  margin-bottom: 10px;
}
.skill-tags { display: flex; flex-wrap: wrap; gap: 5px; }
.skill-tag {
  font-family: var(--f-code);
  font-size: 10.5px; color: var(--t2); font-weight: 500;
  padding: 3px 8px;
  border: 1px solid var(--b2);
  border-radius: 5px; letter-spacing: .3px;
}

/* ════════════════════════════════════════════════════════════
   FOOTER
   ════════════════════════════════════════════════════════════ */
.footer {
  margin-top: 56px;
  padding: 28px 44px 22px;
  border-top: 1px solid var(--b1);
  background: linear-gradient(180deg, var(--bg-2), var(--bg));
  position: relative;
}
.footer-in {
  max-width: 1120px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 24px;
  align-items: center;
}
.footer-left { display: flex; flex-direction: column; gap: 10px; }
.prompt {
  font-family: var(--f-code);
  font-size: 13px; font-weight: 500;
  color: var(--t1);
}
.prompt .user { color: var(--ok); }
.prompt .host { color: var(--t1); }
.prompt .path { color: var(--red); }
.prompt .sym  { color: var(--t3); margin: 0 3px; }
.prompt .cursor {
  display: inline-block; width: 7px; height: 13px;
  background: var(--t1); margin-left: 5px;
  animation: blink 1.1s steps(1) infinite;
  vertical-align: -1px;
}
@keyframes blink { 0%,50% { opacity: 1; } 51%,100% { opacity: 0; } }
.footer-sig {
  font-family: var(--f-code);
  font-size: 10.5px; color: var(--t4);
  letter-spacing: 1px;
}
.footer-sig .red { color: var(--red); }

.footer-right {
  display: flex; flex-direction: column;
  gap: 8px; align-items: flex-end;
}
.footer-meta {
  display: flex; gap: 18px;
  font-family: var(--f-code);
  font-size: 10.5px; color: var(--t3); font-weight: 500;
  letter-spacing: 2px; text-transform: uppercase;
  flex-wrap: wrap; justify-content: flex-end;
}
.footer-meta .clock { color: var(--red); }
.footer-meta a { transition: color .2s; }
.footer-meta a:hover { color: var(--red); }
.footer-socials { display: flex; gap: 6px; }
.footer-sox {
  width: 30px; height: 30px;
  border-radius: 50%;
  border: 1px solid var(--b2);
  display: flex; align-items: center; justify-content: center;
  color: var(--t3); transition: all .2s;
}
.footer-sox svg { width: 13px; height: 13px; }
.footer-sox:hover { color: var(--red); border-color: var(--red); }

/* ════════════════════════════════════════════════════════════
   POST PAGE
   ════════════════════════════════════════════════════════════ */
.reading-progress {
  position: fixed; top: 0; left: 0; right: 0; height: 2px;
  background: linear-gradient(90deg, var(--red), var(--wip), var(--cyan));
  transform: scaleX(0); transform-origin: 0 50%;
  z-index: 101; pointer-events: none;
  transition: transform .08s linear;
  box-shadow: 0 0 12px rgba(239,68,68,.4);
}

.article { padding: 40px 0; max-width: 820px; margin: 0 auto; }
.article-main { min-width: 0; }

@media (min-width: 1200px) {
  .article {
    max-width: 1180px;
    display: grid;
    grid-template-columns: 220px minmax(0, 820px);
    gap: 56px;
  }
  .toc-inline { display: none !important; }
}
@media (max-width: 1199px) {
  .toc-side { display: none !important; }
}

.breadcrumbs {
  font-family: var(--f-code);
  font-size: 11px; color: var(--t3); margin-bottom: 16px;
  display: flex; align-items: center; gap: 8px; flex-wrap: wrap;
  letter-spacing: 1px; text-transform: uppercase;
}
.breadcrumbs a { color: var(--t3); transition: color .2s; }
.breadcrumbs a:hover { color: var(--red); }
.bc-sep { color: var(--t5); }
.bc-current { color: var(--t2); }

.article-meta {
  display: flex; align-items: center; gap: 10px; margin-bottom: 10px; flex-wrap: wrap;
  font-family: var(--f-code);
  font-size: 11px; color: var(--t3); letter-spacing: .3px;
}
.article-title {
  font-family: var(--f-editorial);
  font-size: clamp(30px, 4.5vw, 46px);
  font-weight: 700; letter-spacing: -1.2px; line-height: 1.05;
  color: var(--t1);
}
.article-desc {
  font-family: var(--f-body);
  font-size: 16px; color: var(--t2); margin-top: 12px; line-height: 1.65;
  max-width: 680px;
}
.article-tags {
  display: flex; flex-wrap: wrap; gap: 5px; margin-top: 14px;
}
.article-tags .pill {
  font-family: var(--f-code); font-size: 10px; color: var(--t3);
  padding: 3px 10px; border: 1px solid var(--b2); border-radius: 5px;
  letter-spacing: .3px;
}
.article-foot {
  display: flex; gap: 10px; margin-top: 40px; padding-top: 20px;
  border-top: 1px solid var(--b1); flex-wrap: wrap;
}

/* Sidebar TOC */
.toc-side {
  position: sticky; top: 88px; align-self: start;
  max-height: calc(100vh - 110px); overflow-y: auto;
  padding-right: 10px;
}
.toc-cat {
  font-family: var(--f-code);
  font-size: 10px; color: var(--red); font-weight: 500;
  letter-spacing: 2px; text-transform: uppercase; margin-bottom: 8px;
}
.toc-title {
  display: block;
  font-family: var(--f-editorial);
  font-size: 16px; font-weight: 700;
  color: var(--t1); letter-spacing: -.3px; line-height: 1.3;
  margin-bottom: 14px; padding-bottom: 14px;
  border-bottom: 1px solid var(--b1);
  transition: color .15s;
}
.toc-title:hover { color: var(--red); }
.toc-side .toc-list {
  list-style: none; padding: 0; margin: 0;
  display: flex; flex-direction: column; gap: 2px;
}
.toc-side .toc-item {
  border-left: 2px solid transparent;
  padding-left: 12px;
  transition: border-color .2s;
}
.toc-side .toc-item a {
  display: block; padding: 5px 0; line-height: 1.45; font-size: 12.5px;
  color: var(--t3); transition: color .15s;
  font-family: var(--f-body);
}
.toc-side .toc-item a:hover { color: var(--t1); }
.toc-side .toc-item a.active { color: var(--red); font-weight: 600; }
.toc-side .toc-item:has(a.active) { border-left-color: var(--red); }
.toc-side .toc-h3 { padding-left: 24px; }
.toc-side .toc-h3 a { font-size: 12px; }
.toc-side::-webkit-scrollbar { width: 4px; }
.toc-side::-webkit-scrollbar-thumb { background: var(--b2); border-radius: 2px; }

/* Inline TOC (narrow screens) */
.toc-inline {
  background: var(--s1);
  border: 1px solid var(--b1);
  border-radius: 10px;
  padding: 16px 20px;
  margin: 24px 0 8px;
}
.toc-label {
  font-family: var(--f-code);
  font-size: 10.5px; font-weight: 600;
  text-transform: uppercase; letter-spacing: 2px;
  color: var(--t3); margin-bottom: 10px;
}
.toc-inline .toc-list {
  list-style: none; padding: 0; margin: 0;
  display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 4px 18px;
}
.toc-inline .toc-item { font-size: 13px; line-height: 1.5; }
.toc-inline .toc-item a {
  font-family: var(--f-body); color: var(--t2);
  padding: 3px 0; display: inline-block; transition: color .15s;
}
.toc-inline .toc-item a:hover { color: var(--red); }
.toc-inline .toc-h3 { padding-left: 16px; }

/* Prose */
.prose { margin-top: 32px; font-size: 16px; line-height: 1.75; color: var(--t1); font-family: var(--f-body); }
.prose h2, .prose h3, .prose h4 {
  font-family: var(--f-editorial); color: var(--t1);
  position: relative; scroll-margin-top: 88px;
}
.prose h2 {
  font-size: 28px; font-weight: 700; margin-top: 40px; margin-bottom: 14px;
  letter-spacing: -.8px; padding-bottom: 10px;
  border-bottom: 1px solid var(--b1);
}
.prose h3 {
  font-size: 22px; font-weight: 600; margin-top: 28px; margin-bottom: 10px;
  letter-spacing: -.5px;
}
.prose h4 {
  font-family: var(--f-headline);
  font-size: 16px; font-weight: 600; margin-top: 20px; margin-bottom: 6px;
}
.prose p { margin-bottom: 16px; color: var(--t2); }
.prose a { color: var(--red); text-decoration: underline; text-decoration-color: rgba(239,68,68,.3); text-underline-offset: 3px; }
.prose a:hover { text-decoration-color: var(--red); }
.prose strong { color: var(--t1); font-weight: 600; }
.prose em { color: var(--t1); font-style: italic; }
.prose ul, .prose ol { margin-bottom: 16px; padding-left: 24px; color: var(--t2); }
.prose li { margin-bottom: 4px; }
.prose li::marker { color: var(--red); }
.prose blockquote {
  border-left: 3px solid rgba(239,68,68,.25);
  padding: 10px 18px; margin: 20px 0;
  background: rgba(239,68,68,.025);
  border-radius: 0 8px 8px 0;
  color: var(--t2); font-style: italic;
}
.prose code {
  font-family: var(--f-code); font-size: .92em;
  background: rgba(255,255,255,.04);
  border: 1px solid rgba(255,255,255,.06);
  padding: 2px 6px; border-radius: 4px; color: var(--red);
}
.prose pre {
  margin: 20px 0; padding: 26px 18px 18px;
  background: var(--s1);
  border: 1px solid var(--b1);
  border-radius: 10px; overflow-x: auto;
  position: relative;
}
.prose pre code {
  background: none; border: none; padding: 0; color: var(--t1);
  font-family: var(--f-code); font-size: 13px; line-height: 1.65;
}
.prose img { border-radius: 10px; margin: 20px 0; border: 1px solid var(--b1); }
.prose table { width: 100%; border-collapse: collapse; margin: 20px 0; font-size: 14px; font-family: var(--f-body); }
.prose th, .prose td { padding: 10px 14px; text-align: left; border-bottom: 1px solid var(--b1); }
.prose th {
  font-family: var(--f-code); font-size: 11px; font-weight: 600;
  text-transform: uppercase; letter-spacing: .5px;
  color: var(--t3); background: rgba(255,255,255,.02);
}
.prose td { color: var(--t2); }
.prose hr { border: none; height: 1px; background: var(--b1); margin: 32px 0; }

/* Syntax highlighting (Rouge) */
.highlight { background: transparent; }
.highlight .c, .highlight .cm, .highlight .c1, .highlight .cs { color: var(--t4); font-style: italic; }
.highlight .k, .highlight .kc, .highlight .kd, .highlight .kr { color: var(--alpha); }
.highlight .kn { color: var(--red); }
.highlight .kt { color: var(--blue); }
.highlight .s, .highlight .s2, .highlight .s1, .highlight .sb, .highlight .sc, .highlight .sh, .highlight .sx { color: var(--ok); }
.highlight .sr { color: var(--wip); }
.highlight .na { color: var(--blue); }
.highlight .nc { color: var(--ok); }
.highlight .nf { color: var(--blue); }
.highlight .nt { color: var(--red); }
.highlight .nv, .highlight .vi { color: var(--ok); }
.highlight .m, .highlight .mi, .highlight .mf { color: var(--wip); }
.highlight .o, .highlight .ow { color: var(--red); }
.highlight .p { color: var(--t2); }
.highlight .err { color: var(--red); }

/* Anchor link on heading hover */
.anchor-link {
  margin-left: 10px;
  color: var(--red); font-family: var(--f-code);
  font-size: .55em; font-weight: 500;
  opacity: 0; transition: opacity .2s, color .15s;
  text-decoration: none; vertical-align: middle; display: inline-block;
}
.prose h2:hover .anchor-link,
.prose h3:hover .anchor-link,
.prose h4:hover .anchor-link,
.anchor-link:focus-visible { opacity: 1; }
.anchor-link:hover { color: var(--wip); }
.anchor-link.copied { color: var(--ok); opacity: 1; }

/* Code language label */
.code-lang {
  position: absolute; top: 8px; left: 14px;
  font-family: var(--f-code); font-size: 10px; font-weight: 600;
  letter-spacing: 1.5px; text-transform: uppercase;
  color: var(--t4); pointer-events: none; user-select: none;
}

/* Copy button */
.copy-btn {
  position: absolute; top: 6px; right: 8px;
  font-family: var(--f-code); font-size: 10px; font-weight: 600;
  letter-spacing: 1px; text-transform: uppercase;
  background: var(--s2); color: var(--t3);
  border: 1px solid var(--b2);
  padding: 4px 10px; border-radius: 6px; cursor: pointer;
  transition: all .15s; opacity: 0;
}
.prose pre:hover .copy-btn { opacity: 1; }
.copy-btn:focus { opacity: 1; outline: none; }
.copy-btn:hover { color: var(--t1); border-color: var(--b3); background: var(--b1); }
.copy-btn.copied { color: var(--ok); border-color: rgba(16,185,129,.3); background: rgba(16,185,129,.08); }

/* Series */
.series-banner {
  display: inline-flex; align-items: center; gap: 10px;
  background: rgba(168,85,247,.08); border: 1px solid rgba(168,85,247,.22);
  border-radius: 7px; padding: 6px 14px; margin-bottom: 14px;
  font-family: var(--f-code); font-size: 11px;
  color: var(--alpha); letter-spacing: 1.5px; text-transform: uppercase;
}
.series-name { color: var(--t1); font-weight: 600; }
.series-part { color: var(--alpha); font-weight: 500; }

.series-card {
  background: linear-gradient(180deg, rgba(168,85,247,.04), transparent);
  border: 1px solid rgba(168,85,247,.18); border-radius: 12px;
  padding: 18px 20px; margin: 36px 0 0;
}
.series-card-hdr { display: flex; align-items: center; gap: 12px; margin-bottom: 14px; color: var(--alpha); }
.series-card-name {
  font-family: var(--f-editorial); font-size: 20px; font-weight: 700;
  color: var(--t1); letter-spacing: -.3px;
}
.series-list { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 2px; }
.series-item {
  display: flex; align-items: center; gap: 12px; padding: 9px 12px;
  border-radius: 8px; transition: background .2s;
}
.series-item:hover { background: rgba(168,85,247,.05); }
.series-num { font-family: var(--f-code); font-size: 11px; color: var(--t4); flex-shrink: 0; min-width: 22px; letter-spacing: .5px; }
.series-link {
  flex: 1; font-family: var(--f-headline); font-size: 14px; font-weight: 500;
  color: var(--t2); transition: color .15s; letter-spacing: -.01em;
}
a.series-link:hover { color: var(--alpha); }
.series-item.is-current { background: rgba(168,85,247,.08); border: 1px solid rgba(168,85,247,.2); }
.series-item.is-current .series-link { color: var(--t1); }
.series-item.is-current .series-num { color: var(--alpha); }
.series-now {
  font-family: var(--f-code); font-size: 9px;
  color: var(--alpha); background: rgba(168,85,247,.1);
  border: 1px solid rgba(168,85,247,.22);
  padding: 2px 8px; border-radius: 5px;
  text-transform: uppercase; letter-spacing: 1px; font-weight: 600;
}

/* Related + post-nav */
.related { margin-top: 40px; padding-top: 24px; border-top: 1px solid var(--b1); }
.related-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 10px;
}
.related-card {
  display: flex; flex-direction: column; gap: 8px;
  background: linear-gradient(180deg, var(--s1), var(--s2));
  border: 1px solid var(--b1); border-radius: 10px;
  padding: 14px 16px; transition: all .25s; min-height: 110px;
}
.related-card:hover { border-color: rgba(239,68,68,.3); transform: translateY(-2px); }
.related-date { font-family: var(--f-code); font-size: 10px; color: var(--t4); letter-spacing: 1px; text-transform: uppercase; }
.related-t { font-family: var(--f-editorial); font-size: 15px; font-weight: 700; color: var(--t1); line-height: 1.3; letter-spacing: -.3px; }
.related-card:hover .related-t { color: var(--red); }
.related-desc { font-family: var(--f-body); font-size: 12px; color: var(--t3); line-height: 1.5; }

.post-nav {
  display: grid; grid-template-columns: 1fr 1fr; gap: 12px;
  margin-top: 32px;
}
.post-nav-card {
  display: flex; flex-direction: column; gap: 6px;
  background: var(--s1); border: 1px solid var(--b1); border-radius: 10px;
  padding: 14px 18px; transition: all .2s; min-height: 70px;
}
.post-nav-card:hover { border-color: rgba(239,68,68,.3); transform: translateY(-2px); background: var(--s2); }
.pn-prev { text-align: left; }
.pn-next { text-align: right; }
.pn-dir {
  font-family: var(--f-code); font-size: 10.5px; color: var(--red);
  letter-spacing: 2px; text-transform: uppercase; font-weight: 600;
}
.pn-title {
  font-family: var(--f-headline); font-size: 14px; font-weight: 500;
  color: var(--t1); line-height: 1.3; letter-spacing: -.01em;
}

/* ════════════════════════════════════════════════════════════
   LIGHTBOX + MODALS
   ════════════════════════════════════════════════════════════ */
.prose img.lb-trigger { cursor: zoom-in; transition: transform .25s cubic-bezier(.16,1,.3,1); }
.prose img.lb-trigger:hover { transform: scale(1.005); }
.lightbox-overlay {
  position: fixed; inset: 0; z-index: 300;
  background: rgba(0,0,0,.92); backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px);
  display: none; align-items: center; justify-content: center;
  cursor: zoom-out; padding: 20px;
}
.lightbox-overlay.open { display: flex; animation: fadeIn .2s ease-out; }
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
.lightbox-img {
  max-width: 92vw; max-height: 86vh; object-fit: contain;
  border-radius: 8px; cursor: default;
  box-shadow: 0 20px 60px rgba(0,0,0,.5);
  animation: lbIn .3s cubic-bezier(.16,1,.3,1);
}
@keyframes lbIn { from { opacity: 0; transform: scale(.96); } to { opacity: 1; transform: scale(1); } }
.lightbox-close, .lightbox-nav {
  position: absolute; background: rgba(255,255,255,.06); border: 1px solid rgba(255,255,255,.12);
  color: #fff; width: 44px; height: 44px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center; cursor: pointer;
  transition: all .2s; font-family: inherit; font-size: 22px; line-height: 1; padding: 0;
}
.lightbox-close { top: 20px; right: 20px; font-size: 24px; }
.lightbox-prev { left: 20px; top: 50%; transform: translateY(-50%); }
.lightbox-next { right: 20px; top: 50%; transform: translateY(-50%); }
.lightbox-close:hover, .lightbox-nav:hover { background: rgba(255,255,255,.14); border-color: rgba(255,255,255,.25); }
.lightbox-caption {
  position: absolute; bottom: 24px; left: 50%; transform: translateX(-50%);
  color: rgba(255,255,255,.7); font-family: var(--f-code); font-size: 11px;
  max-width: 80vw; padding: 6px 16px;
  background: rgba(0,0,0,.5); border-radius: 50px; letter-spacing: .5px;
  text-align: center;
}

/* Cert/lab modals */
.modal-overlay {
  position: fixed; inset: 0; z-index: 200;
  background: rgba(0,0,0,.72);
  backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px);
  display: flex; align-items: center; justify-content: center;
  cursor: pointer;
  animation: fadeIn .25s ease-out;
}
.modal-overlay.hidden { display: none; }
.modal-box {
  position: relative; width: 520px; max-width: 92vw; max-height: 85vh; overflow-y: auto;
  background: linear-gradient(180deg, var(--s1), var(--s2));
  border: 1px solid var(--b2); border-radius: 14px; padding: 24px;
  cursor: default;
  animation: lbIn .35s cubic-bezier(.16,1,.3,1);
  box-shadow: 0 24px 60px rgba(0,0,0,.5);
}
.modal-close {
  position: absolute; top: 14px; right: 14px;
  background: var(--s2); border: 1px solid var(--b2);
  color: var(--t3); width: 32px; height: 32px; border-radius: 50%;
  cursor: pointer; font-family: inherit; font-size: 15px;
  display: flex; align-items: center; justify-content: center;
  transition: all .2s; z-index: 1;
}
.modal-close:hover { color: var(--red); border-color: rgba(239,68,68,.3); }
.modal-img {
  width: 100%; aspect-ratio: 16/10; border-radius: 10px; overflow: hidden;
  border: 1px solid var(--b1); margin-bottom: 18px; background: var(--bg);
}
.modal-img img { width: 100%; height: 100%; object-fit: cover; }

/* Project modal — wider box, full screenshot (no crop), graceful fallback */
.project-modal .modal-box-wide { width: 640px; }
.project-modal .modal-img-screenshot { position: relative; background: var(--bg); }
.project-modal .modal-img-screenshot img { object-fit: contain; }
.modal-img-fb {
  position: absolute; inset: 0;
  display: flex; align-items: center; justify-content: center;
  font-family: var(--f-code); font-size: 11px; font-weight: 600;
  letter-spacing: 1.5px; color: var(--t3);
}
.modal-img-fb[hidden] { display: none; }

.project-modal.ok    .modal-badge { color: var(--ok); }
.project-modal.wip   .modal-badge { color: var(--wip); }
.project-modal.alpha .modal-badge { color: var(--alpha); }
.project-modal.priv  .modal-badge { color: var(--t3); }

.modal-desc {
  font-family: var(--f-body); font-size: 14px; color: var(--t2);
  line-height: 1.6; margin-top: 14px;
}
.modal-actions {
  display: flex; gap: 10px; margin-top: 22px; flex-wrap: wrap;
}
.modal-actions a[hidden] { display: none; }
.tool[role="button"] { cursor: pointer; }
.tool[role="button"]:focus-visible { outline: 2px solid var(--red); outline-offset: 3px; }
.modal-badge { font-family: var(--f-code); font-size: 11px; font-weight: 600; letter-spacing: 1.5px; text-transform: uppercase; color: var(--red); margin-bottom: 4px; }
.modal-overlay.green .modal-badge { color: var(--ok); }
.modal-overlay.green .modal-close:hover { color: var(--ok); border-color: rgba(16,185,129,.3); }
.cert:focus-visible { outline: 2px solid var(--red); outline-offset: 3px; }
.cert.green:focus-visible { outline-color: var(--ok); }
.modal-title { font-family: var(--f-editorial); font-size: 26px; font-weight: 700; letter-spacing: -.5px; line-height: 1.15; }
.modal-org { font-family: var(--f-code); font-size: 12px; color: var(--t3); margin-top: 6px; letter-spacing: .3px; }
.modal-sec { margin-top: 18px; }
.modal-lab {
  font-family: var(--f-code); font-size: 10px; font-weight: 600;
  text-transform: uppercase; letter-spacing: 2px; color: var(--t3);
  margin-bottom: 8px;
}
.modal-sec p, .modal-sec blockquote {
  font-family: var(--f-body); font-size: 14px;
  color: var(--t2); line-height: 1.7; font-style: normal;
}
.modal-sec blockquote {
  border-left: 2px solid var(--red); padding: 8px 14px;
  background: rgba(239,68,68,.03); border-radius: 0 6px 6px 0;
  font-style: italic;
}
.modal-skills { display: flex; flex-wrap: wrap; gap: 6px; }
.modal-sk {
  font-family: var(--f-code); font-size: 10.5px;
  padding: 4px 10px; border: 1px solid var(--b2); border-radius: 5px;
  color: var(--t2); letter-spacing: .3px;
}

/* ════════════════════════════════════════════════════════════
   404 PAGE
   ════════════════════════════════════════════════════════════ */
.nf-wrap {
  min-height: 60vh; display: flex; flex-direction: column;
  align-items: center; justify-content: center; text-align: center;
  padding: 60px 0; gap: 18px;
}
.nf-code {
  font-family: var(--f-hero); font-size: clamp(100px, 18vw, 180px);
  font-weight: 400; letter-spacing: -6px; line-height: 1;
}
.nf-msg { font-family: var(--f-code); color: var(--t2); font-size: 14px; letter-spacing: 1px; }
.nf-actions { display: flex; gap: 10px; flex-wrap: wrap; justify-content: center; margin-top: 6px; }
.nf-cats { margin-top: 24px; max-width: 720px; }

/* ════════════════════════════════════════════════════════════
   SCROLLBAR + SELECTION
   ════════════════════════════════════════════════════════════ */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--b2); border-radius: 3px; }
::selection { background: rgba(239,68,68,.22); color: var(--t1); }

/* ════════════════════════════════════════════════════════════
   RESPONSIVE
   ════════════════════════════════════════════════════════════ */
@media (max-width: 900px) {
  .pg { padding: 0 22px 48px; }
  .hero { padding: 16px 0 8px; }
  .hero-grid { grid-template-columns: 1fr; gap: 24px; }
  .hero-bgtext { display: none; }
  .strip { grid-template-columns: repeat(2, 1fr); }
  .strip-c:nth-child(2n) { border-right: none; }
  .strip-c { border-bottom: 1px solid var(--b1); }
  .strip-c:nth-last-child(-n+2) { border-bottom: none; }
  .strip-v { font-size: 30px; }
  .tools-grid { grid-template-columns: 1fr; }
  .tool-feats { grid-template-columns: 1fr; }
  .wu { grid-template-columns: 38px 52px 1fr; gap: 10px; }
  .wu-arrow { display: none; }
  .bio-card { grid-template-columns: 1fr; }
  .bio-av { width: 80px; height: 80px; }
  .bio-av-fb { font-size: 30px; }
  .tl { grid-template-columns: 1fr; gap: 10px; padding: 16px 18px; }
  .footer { padding: 20px; }
  .footer-in { grid-template-columns: 1fr; }
  .footer-right { align-items: flex-start; }
  .footer-meta { justify-content: flex-start; }
  .related-grid { grid-template-columns: 1fr; }
  .post-nav { grid-template-columns: 1fr; }
  .pn-next { text-align: left; }
  .anchor-link { opacity: .35; }
  .copy-btn { opacity: 1; }
  .reading-progress { height: 3px; }
}

@media (max-width: 600px) {
  .nav { padding: 3px; gap: 0; left: 12px; right: 12px; transform: none; }
  .nav-item { font-size: 12px; padding: 7px 13px; }

  /* Page chrome */
  .pg { padding: 0 16px 40px; }
  .pg-title-wrap { padding: 18px 0 6px; }
  .pg-title { font-size: clamp(30px, 9vw, 46px); letter-spacing: -1px; }
  .pg-sub { font-size: 13px; }

  /* Hero */
  .hero { padding: 12px 0 4px; }
  .h-name { font-size: clamp(48px, 13vw, 84px); letter-spacing: -1.5px; }
  .h-subline { flex-wrap: wrap; row-gap: 4px; font-size: 10.5px; }
  .h-subline .sep { display: none; }
  .h-desc { font-size: 14px; }
  .h-btns { flex-wrap: wrap; gap: 8px; }
  .h-btns > * { flex: 1 1 140px; text-align: center; justify-content: center; }
  .op-wrap { padding: 16px; }
  .op-row { font-size: 11px; }

  /* Stats strip — already 2-col at 720px; tighten further */
  .strip-v { font-size: 24px; }
  .strip-l { font-size: 9.5px; }
  .strip-c { padding: 14px 12px; }

  /* Writeup row — tighter on small screens */
  .wu { padding: 10px 12px; gap: 8px; grid-template-columns: 36px 48px 1fr; }
  .wu-idx { font-size: 10px; }
  .wu-date { font-size: 10px; }
  .wu-title { font-size: 13.5px; line-height: 1.35; }
  .wu-meta { gap: 6px; flex-wrap: wrap; }
  .wu-diff, .wu-cat { font-size: 9.5px; padding: 3px 7px; }

  /* Filter / search bar */
  .filters { padding: 10px; gap: 5px; }
  .fb { padding: 6px 10px; font-size: 10px; letter-spacing: .5px; }
  .filter-meta { font-size: 11px; }
  .search-wrap { margin: 14px 0 8px; }
  .search-input { font-size: 13px; padding: 11px 16px 11px 40px; }
  .search-icon { left: 13px; }
  .search-kbd { display: none; }   /* no '/' shortcut hint on touch */

  /* Category chips */
  .cat-chips { gap: 5px; }
  .chip { padding: 6px 10px; font-size: 10px; }
  .chip-count { font-size: 9px; padding: 2px 5px; }

  /* Project / tool cards (already 1fr at 900px) */
  .tool { padding: 16px; }
  .tool-name { font-size: 17px; }
  .tool-desc { font-size: 13px; }
  .tool-feats { gap: 5px; }
  .tool-feat { font-size: 12px; }

  /* Modals — keep within viewport, full-width buttons */
  .modal-box { padding: 18px; max-height: 90vh; }
  .modal-box-wide { width: auto; max-width: 92vw; }
  .modal-title { font-size: 22px; }
  .modal-desc { font-size: 13px; }
  .modal-actions { gap: 8px; }
  .modal-actions > a { width: 100%; text-align: center; justify-content: center; }
  .modal-img { aspect-ratio: 16/10; margin-bottom: 14px; }

  /* Section header: stack the "View all →" link below the label */
  .sec-hdr { flex-direction: column; align-items: flex-start; gap: 6px; }
  .sec-hdr .more { align-self: flex-start; }

  /* About page bio + cards */
  .bio-card { padding: 18px; }
  .bio-name { font-size: 22px; }
  .bio-meta { font-size: 11.5px; gap: 8px; flex-wrap: wrap; }
  .certs-grid { grid-template-columns: 1fr; }

  /* Footer */
  .footer-sig { font-size: 11px; }
  .footer-meta { font-size: 10.5px; flex-wrap: wrap; gap: 8px; }
}

@media (max-width: 400px) {
  .nav-item { font-size: 11px; padding: 6px 9px; letter-spacing: .5px; }
  .pg { padding: 0 12px 32px; }
  .pg-title { font-size: 26px; letter-spacing: -.5px; }
  .h-name { font-size: 42px; letter-spacing: -1px; }
  .h-tag { font-size: 9.5px; }
  .modal-box { padding: 14px; }
  .modal-actions > a { padding: 9px 14px; font-size: 12px; }
  .footer-socials { flex-wrap: wrap; gap: 6px; }
  .strip-v { font-size: 20px; }
}

/* ════════════════════════════════════════════════════════════
   ANIMATIONS
   ════════════════════════════════════════════════════════════ */
.ch {
  display: inline-block; opacity: 0;
  transform: translateY(12px);
  animation: chReveal .35s cubic-bezier(.16,1,.3,1) forwards;
  animation-delay: calc(var(--d) * 22ms);
}
@keyframes chReveal { to { opacity: 1; transform: translateY(0); } }

.n-accent { position: relative; overflow: hidden; }
.n-accent::after {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(115deg, transparent 35%, rgba(255,255,255,.32) 50%, transparent 65%);
  transform: translateX(-120%);
  animation: slabShine 5s ease-in-out 1.4s infinite;
  pointer-events: none; z-index: 2;
}
@keyframes slabShine {
  0%, 20% { transform: translateX(-120%); }
  45%     { transform: translateX(120%); }
  100%    { transform: translateX(120%); }
}

.dot-pulse {
  display: inline-block; opacity: 0; transform-origin: center;
  animation:
    dotIntro .4s cubic-bezier(.16,1,.3,1) .45s forwards,
    dotPulse 2.4s ease-in-out .9s infinite;
}
@keyframes dotIntro { from { opacity: 0; transform: scale(.3); } to { opacity: 1; transform: scale(1); } }
@keyframes dotPulse { 0%,100% { opacity: 1; transform: scale(1); } 50% { opacity: .7; transform: scale(1.28); } }

@keyframes fadeUp { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: translateY(0); } }
.h-tag     { opacity: 0; animation: fadeUp .35s ease-out .05s forwards; }
.h-subline { opacity: 0; animation: fadeUp .35s ease-out .25s forwards; }
.h-desc    { opacity: 0; animation: fadeUp .35s ease-out .4s  forwards; }
.h-btns    { opacity: 0; animation: fadeUp .35s ease-out .55s forwards; }

.op-wrap { position: relative; opacity: 0; animation: opWrapIn .5s cubic-bezier(.16,1,.3,1) .15s forwards; }
@keyframes opWrapIn { from { opacity: 0; transform: translateX(16px); } to { opacity: 1; transform: translateX(0); } }

@property --angle { syntax: '<angle>'; initial-value: 0deg; inherits: false; }
.op-wrap::before {
  content: ''; position: absolute; inset: 0;
  border-radius: 11px; padding: 1.5px;
  background: conic-gradient(
    from var(--angle),
    transparent 0deg,
    #22d3ee 65deg, #67e8f9 90deg,
    transparent 140deg, transparent 220deg,
    #60a5fa 270deg, #93c5fd 290deg,
    transparent 340deg
  );
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
          mask-composite: exclude;
  opacity: 0; transition: opacity .5s ease;
  pointer-events: none; z-index: 5;
  filter: drop-shadow(0 0 6px rgba(34, 211, 238, .35));
}
.op-wrap:hover::before { opacity: 1; animation: spinAngle 4s linear infinite; }
@keyframes spinAngle { to { --angle: 360deg; } }

.op-wrap { perspective: 1400px; cursor: pointer; }
.op-flipper {
  position: relative; transform-style: preserve-3d; -webkit-transform-style: preserve-3d;
  transition: transform .55s cubic-bezier(.7, 0, .3, 1); z-index: 1;
}
.op-wrap.flipped .op-flipper { transform: rotateY(180deg); }
.op-face { backface-visibility: hidden; -webkit-backface-visibility: hidden; }
.op-back {
  position: absolute; top: 0; left: 0; width: 100%; height: 100%;
  transform: rotateY(180deg);
  border-radius: 10px; overflow: hidden;
  background: linear-gradient(135deg, var(--s1), var(--s3));
  border: 1px solid rgba(255, 255, 255, 0.07);
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 12px 40px rgba(0,0,0,.4), inset 0 1px 0 rgba(255,255,255,.06);
}
.op-back-img { width: 100%; height: 100%; object-fit: cover; position: absolute; inset: 0; z-index: 1; }
.op-back-fb {
  font-family: var(--f-hero); font-size: 110px; color: var(--red);
  letter-spacing: -3px; opacity: .28; z-index: 0;
}
.op-back-overlay {
  position: absolute; bottom: 0; left: 0; right: 0;
  padding: 16px 20px 18px;
  background: linear-gradient(0deg, rgba(0,0,0,.88), rgba(0,0,0,.4) 65%, transparent);
  z-index: 2;
}
.op-back-handle { font-family: var(--f-hero); font-size: 28px; color: #fff; letter-spacing: 1px; line-height: 1; }
.op-back-hint {
  font-family: var(--f-code); font-size: 10px; color: var(--red);
  letter-spacing: 2.5px; margin-top: 6px;
  text-transform: uppercase; font-weight: 600;
}

.strip { opacity: 0; animation: fadeUp .4s ease-out .7s forwards; }
.tools-grid .tool { opacity: 0; animation: fadeUp .35s ease-out .75s forwards; }
.tools-grid .tool:nth-child(2) { animation-delay: .85s; }
/* No staggered cascade on .wu — filter/search should feel instant. */
.wu-list .wu { opacity: 0; animation: fadeUp .3s ease-out .4s forwards; }
.pg-title-wrap { animation: fadeUp .4s ease-out both; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  .ch, .dot-pulse, .h-tag, .h-subline, .h-desc, .h-btns,
  .op-wrap, .strip, .tools-grid .tool, .wu-list .wu {
    opacity: 1 !important; transform: none !important;
  }
  .op-flipper { transition: none; }
}