/* ============================================================
   Abhishek Lele — Portfolio
   Shared stylesheet. Matches the main-site DNA:
   dark blueprint bg, mono everything, geometric display headings,
   green / cyan / coral accents.
   ============================================================ */

:root {
  /* surfaces */
  --bg:          #080c14;
  --surface:     #0c121b;
  --surface-2:   #0f161f;
  --border:      #1b2430;
  --border-2:    #283341;
  --border-glow: #2b3a4a;

  /* text */
  --text:        #d7dde6;
  --text-dim:    #8a94a3;
  --text-faint:  #59626f;
  --white:       #f1f4f8;

  /* accents */
  --green:  #34e27a;
  --cyan:   #2bb6e8;
  --coral:  #ec6a43;
  --green-soft: rgba(52, 226, 122, 0.10);
  --cyan-soft:  rgba(43, 182, 232, 0.10);

  /* type */
  --mono: "JetBrains Mono", ui-monospace, "SF Mono", Menlo, monospace;
  --display: "Sora", system-ui, sans-serif;

  --maxw: 1240px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--mono);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  font-size: 15px;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
  min-height: 100vh;
}

/* blueprint grid + glows */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(255,255,255,0.022) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.022) 1px, transparent 1px);
  background-size: 46px 46px;
  mask-image: radial-gradient(ellipse 120% 90% at 50% 0%, #000 30%, transparent 100%);
}
body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background:
    radial-gradient(60% 50% at 78% -5%, rgba(43,182,232,0.10), transparent 60%),
    radial-gradient(55% 45% at 10% 8%, rgba(52,226,122,0.06), transparent 60%);
}

#app, .page { position: relative; z-index: 1; }

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

::selection { background: var(--green); color: #04150b; }

/* ---------- shared layout ---------- */
.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 40px; }

/* ---------- monospace comment label ---------- */
.label {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--green);
  display: inline-flex;
  align-items: center;
  gap: 0.7ch;
}
.label::before { content: "//"; opacity: 0.85; }
.label.cyan { color: var(--cyan); }
.label.coral { color: var(--coral); }
.label.dim { color: var(--text-faint); }
.label.dim::before { color: var(--text-faint); }

/* ---------- top nav ---------- */
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(10px);
  background: rgba(8,12,20,0.72);
  border-bottom: 1px solid var(--border);
}
.nav .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}
.logo {
  font-family: var(--display);
  font-weight: 800;
  font-size: 20px;
  letter-spacing: 0.04em;
  color: var(--cyan);
}
.logo span { color: var(--white); }
.nav-links {
  display: flex;
  gap: 30px;
  align-items: center;
}
.nav-links a {
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text-dim);
  transition: color .18s;
}
.nav-links a:hover { color: var(--green); }
.nav-links a.active { color: var(--white); }

/* ---------- buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.7ch;
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  padding: 14px 22px;
  border: 1px solid var(--border-2);
  color: var(--text);
  background: transparent;
  cursor: pointer;
  transition: all .18s ease;
}
.btn:hover { border-color: var(--cyan); color: var(--cyan); transform: translateY(-1px); }
.btn.green { border-color: rgba(52,226,122,0.55); color: var(--green); }
.btn.green:hover { background: var(--green-soft); border-color: var(--green); }
.btn.cyan { border-color: rgba(43,182,232,0.55); color: var(--cyan); }
.btn.cyan:hover { background: var(--cyan-soft); }
.btn.ghost { border-color: var(--border); color: var(--text-dim); }
.btn.ghost:hover { color: var(--text); border-color: var(--border-2); }

/* ---------- tech chips ---------- */
.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chip {
  font-size: 12px;
  letter-spacing: 0.05em;
  color: var(--text-dim);
  border: 1px solid var(--border-2);
  padding: 6px 11px;
  background: var(--surface);
  transition: all .16s;
}
.chip:hover { color: var(--text); border-color: var(--border-glow); }
.chip.sm { font-size: 11px; padding: 4px 9px; }

/* ---------- footer ---------- */
.foot {
  border-top: 1px solid var(--border);
  margin-top: 70px;
  padding: 34px 0;
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--text-faint);
  text-transform: uppercase;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}
.foot .green { color: var(--green); }

/* ---------- image placeholder ---------- */
.imgslot {
  position: relative;
  width: 100%;
  background: var(--surface);
  border: 1px solid var(--border);
  overflow: hidden;
  display: block;
}
.imgslot img { width: 100%; height: 100%; object-fit: cover; display: block; }
.imgslot .ph {
  position: absolute;
  inset: 0;
  background-image: repeating-linear-gradient(
    -45deg,
    rgba(255,255,255,0.015) 0 10px,
    transparent 10px 20px
  );
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  text-align: center;
  padding: 16px;
}
.imgslot .ph .tag {
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--text-dim);
  border: 1px solid var(--border-2);
  padding: 6px 12px;
}
.imgslot .ph .dim { font-size: 11px; color: var(--text-faint); letter-spacing: 0.1em; }

/* ---------- reveal animation ---------- */
.reveal { opacity: 0; transform: translateY(22px); transition: opacity .6s ease, transform .6s ease; }
.reveal.in { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  html { scroll-behavior: auto; }
}

/* ====================== INDEX PAGE ====================== */
.idx-hero { padding: 80px 0 44px; }
.idx-hero h1 {
  font-family: var(--display);
  font-weight: 800;
  font-size: clamp(48px, 8vw, 104px);
  line-height: 0.95;
  letter-spacing: -0.02em;
  color: var(--white);
  margin: 18px 0 0;
}
.idx-hero h1 .accent { color: var(--cyan); }
.idx-hero .lede {
  max-width: 620px;
  color: var(--text-dim);
  margin-top: 22px;
  font-size: 15px;
}
.idx-meta {
  display: flex;
  gap: 34px;
  margin-top: 30px;
  flex-wrap: wrap;
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-faint);
}
.idx-meta b { color: var(--coral); font-weight: 400; }

/* filter bar */
.filters {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  align-items: center;
  padding: 22px 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  margin-bottom: 46px;
}
.filter {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-dim);
  background: transparent;
  border: 1px solid var(--border);
  padding: 8px 15px;
  cursor: pointer;
  transition: all .16s;
}
.filter:hover { color: var(--text); border-color: var(--border-2); }
.filter.active { color: var(--green); border-color: rgba(52,226,122,0.5); background: var(--green-soft); }

/* project grid */
.grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 26px;
}
.card {
  border: 1px solid var(--border);
  background: var(--surface);
  display: flex;
  flex-direction: column;
  transition: border-color .2s, transform .2s;
  position: relative;
  overflow: hidden;
}
.card::after {
  content: "";
  position: absolute;
  left: 0; top: 0;
  width: 0; height: 2px;
  background: var(--green);
  transition: width .35s ease;
}
.card:hover { border-color: var(--border-glow); transform: translateY(-3px); }
.card:hover::after { width: 100%; }
.card .thumb { display: block; }
.card .thumb .imgslot { aspect-ratio: 16 / 9; }
.card .thumb .figplate { border: none; border-bottom: 1px solid var(--border); }
.card .thumb .figplate .fimg { aspect-ratio: 16 / 9; }
.card .thumb .figcap { display: none; }
.card .thumb .logo-lockup { border: none; border-bottom: 1px solid var(--border); min-height: 0; aspect-ratio: 16 / 9; gap: 14px; padding: 20px; }
.card .thumb .logo-lockup .logo-mark { width: 64px; height: 64px; }
.card .thumb .logo-lockup .lw-name { font-size: 28px; }
.card .body { padding: 24px 24px 26px; display: flex; flex-direction: column; gap: 14px; flex: 1; }
.card .cardmeta {
  display: flex; justify-content: space-between; align-items: baseline;
  font-size: 11px; letter-spacing: 0.18em; text-transform: uppercase;
}
.card .cardmeta .num { color: var(--green); }
.card .cardmeta .date { color: var(--text-faint); }
.card h3 {
  font-family: var(--display);
  font-weight: 700;
  font-size: 23px;
  line-height: 1.12;
  letter-spacing: -0.01em;
  color: var(--white);
}
.card:hover h3 { color: var(--cyan); }
.card .desc { font-size: 13.5px; color: var(--text-dim); line-height: 1.55; }
.card .cardfoot {
  margin-top: auto;
  display: flex; align-items: center; justify-content: space-between;
  padding-top: 6px;
}
.card .arrow {
  font-size: 13px; letter-spacing: 0.16em; text-transform: uppercase;
  color: var(--text-faint); transition: color .18s, transform .18s;
}
.card:hover .arrow { color: var(--green); }

/* ====================== DETAIL PAGE ====================== */
.crumbs {
  display: flex; align-items: center; gap: 12px;
  padding: 30px 0 0;
  font-size: 12px; letter-spacing: 0.16em; text-transform: uppercase;
  color: var(--text-faint);
}
.crumbs a { color: var(--text-dim); transition: color .16s; }
.crumbs a:hover { color: var(--green); }
.crumbs .sep { opacity: 0.5; }

.detail-hero { padding: 30px 0 14px; }
.detail-hero .pmeta {
  font-size: 12px; letter-spacing: 0.22em; text-transform: uppercase;
  color: var(--green); margin-bottom: 20px;
}
.detail-hero .pmeta .dot { color: var(--text-faint); margin: 0 10px; }
.detail-hero h1 {
  font-family: var(--display);
  font-weight: 800;
  font-size: clamp(36px, 5.4vw, 68px);
  line-height: 1.02;
  letter-spacing: -0.02em;
  color: var(--white);
  max-width: 16ch;
}
.detail-hero .sub {
  color: var(--coral);
  font-size: clamp(15px, 1.6vw, 19px);
  margin-top: 22px;
  max-width: 720px;
  line-height: 1.5;
}
.detail-hero .herochips { margin-top: 26px; }

.heroimg { margin: 40px 0 0; }
.heroimg .imgslot { aspect-ratio: 16 / 8; }

/* fact strip */
.facts {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border: 1px solid var(--border);
  border-bottom: none;
  margin-top: 44px;
}
.facts .fact {
  padding: 22px 24px;
  border-bottom: 1px solid var(--border);
  border-right: 1px solid var(--border);
}
.facts .fact:nth-child(4n) { border-right: none; }
.facts .fact .k { font-size: 11px; letter-spacing: 0.16em; text-transform: uppercase; color: var(--text-faint); }
.facts .fact .v { font-family: var(--display); font-weight: 600; font-size: 17px; color: var(--text); margin-top: 8px; line-height: 1.25; }
.facts .fact .v.cyan { color: var(--cyan); }

/* generic section */
.section { padding: 52px 0 0; }
.section.tight { padding-top: 40px; }
.section > .label { margin-bottom: 14px; }
.section .stitle {
  font-family: var(--display);
  font-weight: 700;
  font-size: clamp(26px, 3.4vw, 40px);
  letter-spacing: -0.01em;
  color: var(--white);
  margin-bottom: 8px;
}
.section .sintro { color: var(--text-dim); max-width: 700px; margin-bottom: 28px; font-size: 14.5px; }

/* two-column lead: aim + background */
.lead-grid { display: grid; grid-template-columns: 1.05fr 0.95fr; gap: 48px; align-items: start; }
.lead-grid .col-label { margin-bottom: 14px; }

/* approach blocks */
.approach { display: grid; gap: 0; border-top: 1px solid var(--border); }
.ablock {
  display: grid;
  grid-template-columns: 64px 1fr;
  gap: 26px;
  padding: 30px 0;
  border-bottom: 1px solid var(--border);
}
.ablock .anum { font-size: 13px; letter-spacing: 0.1em; color: var(--green); padding-top: 4px; }
.ablock h4 {
  font-family: var(--display);
  font-weight: 600;
  font-size: 20px;
  color: var(--white);
  margin-bottom: 10px;
  letter-spacing: -0.01em;
}
.ablock p { color: var(--text-dim); font-size: 14.5px; max-width: 760px; }
.ablock .achips { margin-top: 14px; }

/* metrics */
.metrics {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 0;
  border: 1px solid var(--border);
}
.metric {
  padding: 34px 28px;
  border-right: 1px solid var(--border);
  position: relative;
}
.metric:last-child { border-right: none; }
.metric .big {
  font-family: var(--display);
  font-weight: 800;
  font-size: clamp(40px, 5vw, 60px);
  line-height: 1;
  color: var(--cyan);
  letter-spacing: -0.02em;
}
.metric .big .unit { font-size: 0.42em; color: var(--text-dim); margin-left: 4px; letter-spacing: 0; }
.metric .mlabel { font-size: 12px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--text-faint); margin-top: 14px; }
.metric .mdesc { font-size: 13px; color: var(--text-dim); margin-top: 8px; line-height: 1.5; }

/* gallery */
.gallery {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 16px;
}
.gallery .gitem { cursor: zoom-in; }
.gallery .gitem .imgslot { height: 100%; }
.gallery .gitem .cap {
  font-size: 11.5px; color: var(--text-faint); margin-top: 10px;
  letter-spacing: 0.04em;
}
.gallery .gitem .cap b { color: var(--text-dim); font-weight: 400; }
/* spans */
.g-wide { grid-column: span 4; }
.g-tall { grid-column: span 2; }
.g-half { grid-column: span 3; }
.g-third { grid-column: span 2; }
.gallery .gitem .imgslot { aspect-ratio: 4 / 3; }
.g-wide .imgslot { aspect-ratio: 16 / 7; }

/* prev / next */
.pager {
  display: grid;
  grid-template-columns: 1fr 1fr;
  border: 1px solid var(--border);
  margin-top: 80px;
}
.pager a {
  padding: 30px 30px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  transition: background .18s;
}
.pager a:first-child { border-right: 1px solid var(--border); }
.pager a:last-child { text-align: right; align-items: flex-end; }
.pager a:hover { background: var(--surface); }
.pager .dir { font-size: 11px; letter-spacing: 0.2em; text-transform: uppercase; color: var(--text-faint); }
.pager a:hover .dir { color: var(--green); }
.pager .ttl { font-family: var(--display); font-weight: 600; font-size: 18px; color: var(--text); letter-spacing: -0.01em; }
.pager a:hover .ttl { color: var(--cyan); }
.pager a.disabled { opacity: 0.3; pointer-events: none; }

/* lightbox */
.lightbox {
  position: fixed; inset: 0; z-index: 200;
  background: rgba(4,7,12,0.94);
  backdrop-filter: blur(6px);
  display: none;
  align-items: center;
  justify-content: center;
  padding: 5vh 5vw;
}
.lightbox.open { display: flex; }
.lightbox .lb-inner { max-width: 1100px; width: 100%; }
.lightbox .imgslot { aspect-ratio: 16/9; }
.lightbox .lb-cap { color: var(--text-dim); font-size: 13px; margin-top: 16px; text-align: center; letter-spacing: 0.06em; }
.lightbox .lb-close {
  position: absolute; top: 28px; right: 34px;
  font-size: 13px; letter-spacing: 0.18em; text-transform: uppercase;
  color: var(--text-dim); cursor: pointer; border: 1px solid var(--border-2); padding: 10px 16px;
}
.lightbox .lb-close:hover { color: var(--white); border-color: var(--border-glow); }

/* ---------- responsive ---------- */
@media (max-width: 860px) {
  .wrap { padding: 0 22px; }
  .grid { grid-template-columns: 1fr; }
  .nav-links { display: none; }
  .facts { grid-template-columns: repeat(2, 1fr); }
  .facts .fact:nth-child(4n) { border-right: 1px solid var(--border); }
  .facts .fact:nth-child(2n) { border-right: none; }
  .metric { border-right: none; border-bottom: 1px solid var(--border); }
  .metric:last-child { border-bottom: none; }
  .gallery { grid-template-columns: repeat(2, 1fr); }
  .g-wide, .g-tall, .g-half, .g-third { grid-column: span 2; }
  .ablock { grid-template-columns: 1fr; gap: 8px; }
  .ablock .anum { padding-top: 0; }
  .pager { grid-template-columns: 1fr; }
  .pager a:first-child { border-right: none; border-bottom: 1px solid var(--border); }
  .pager a:last-child { text-align: left; align-items: flex-start; }
}

/* ====================== V2 — RICH DETAIL COMPONENTS ====================== */

/* aim / lead statement */
.aim {
  font-family: var(--display);
  font-weight: 400;
  font-size: clamp(20px, 2.5vw, 29px);
  line-height: 1.42;
  letter-spacing: -0.01em;
  color: var(--text);
  max-width: 900px;
}
.aim .hl { color: var(--cyan); }
.aim strong { color: var(--white); font-weight: 600; }

/* prose paragraphs */
.prose { max-width: 820px; }
.prose p { color: var(--text-dim); font-size: 15px; line-height: 1.8; margin-bottom: 1.1rem; }
.prose p:last-child { margin-bottom: 0; }
.prose strong { color: var(--text); font-weight: 600; }
.prose .hl { color: var(--cyan); }

/* figure plate: light image area + dark mono caption bar */
.figplate {
  border: 1px solid var(--border-2);
  background: #f2f2ee;
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}
.figplate .fimg {
  background:
    repeating-linear-gradient(-45deg, rgba(0,0,0,0.018) 0 11px, transparent 11px 22px),
    #f2f2ee;
  display: flex; align-items: center; justify-content: center;
  flex: 1;
}
.figplate .fimg img { width: 100%; height: 100%; object-fit: contain; display: block; }
.figplate.cover .fimg img { object-fit: cover; }
.figcap {
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: 0.03em;
  color: var(--text-dim);
  padding: 11px 14px;
  border-top: 1px solid var(--border);
  background: var(--surface-2);
  display: flex; gap: 9px; align-items: baseline;
}
.figcap .fno { color: var(--green); flex: none; }

/* hero featured figure */
.hero-figure { margin-top: 30px; }
.hero-figure .figplate .fimg { aspect-ratio: 16 / 7; }

/* hero split: facts + figure side by side to save height */
.hero-split { display: grid; grid-template-columns: 1fr 1fr; gap: 26px; align-items: stretch; margin-top: 34px; }
.hero-split .facts { margin-top: 0; grid-template-columns: 1fr 1fr; border-bottom: 1px solid var(--border); height: 100%; }
.hero-split .facts .fact:nth-child(2n) { border-right: none; }
.hero-split .hero-figure { margin-top: 0; }
.hero-split .figplate { height: 100%; }
.hero-split .figplate .fimg { aspect-ratio: auto; height: 100%; min-height: 240px; max-height: 300px; }
.hero-split .figplate .fimg img { object-fit: contain; }

/* brand logo lockup (used when a project has no hero photo yet) */
.logo-lockup {
  height: 100%;
  min-height: 260px;
  border: 1px solid var(--border-2);
  background:
    radial-gradient(130% 100% at 50% 0%, rgba(43,182,232,0.16), transparent 62%),
    var(--surface-2);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 22px;
  padding: 32px;
  text-align: center;
}
.logo-lockup .logo-mark { width: 104px; height: 104px; flex: none; display: block; }
.logo-lockup .logo-mark svg { width: 100%; height: 100%; display: block; }
.logo-lockup .lw-name {
  font-family: var(--display);
  font-weight: 800;
  font-size: 38px;
  letter-spacing: -0.02em;
  color: var(--white);
  line-height: 1;
}
.logo-lockup .lw-name span { color: var(--cyan); }
.logo-lockup .lw-tag {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--text-dim);
}

/* methods as compact 2-col card grid */
.methodgrid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
}
.methodgrid .mcard { background: var(--bg); padding: 22px 24px; display: flex; flex-direction: column; gap: 9px; }
.methodgrid .mcard .anum { font-size: 12px; letter-spacing: 0.1em; color: var(--green); }
.methodgrid .mcard h4 { font-family: var(--display); font-weight: 600; font-size: 17px; color: var(--white); letter-spacing: -0.01em; line-height: 1.2; }
.methodgrid .mcard p { color: var(--text-dim); font-size: 13.5px; line-height: 1.6; }
.methodgrid .mcard .achips { margin-top: auto; padding-top: 4px; }

/* results: chart beside text */
.chart-row { display: grid; grid-template-columns: 1.45fr 1fr; gap: 26px; align-items: center; margin-top: 24px; }
.chart-row .prose { margin: 0; }

/* equations 2-up */
.eqgrid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; align-items: start; }
.eqgrid > div { min-width: 0; }

/* figure gallery using plates */
.figgrid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 16px;
}
.figgrid .gcell { cursor: zoom-in; display: flex; }
.figgrid .gcell .figplate { width: 100%; }
.figgrid .gcell .figplate .fimg { aspect-ratio: 4 / 3; }
.figgrid .g-wide { grid-column: span 4; }
.figgrid .g-wide .figplate .fimg { aspect-ratio: 16 / 8; }
.figgrid .g-half { grid-column: span 3; }
.figgrid .g-third { grid-column: span 2; }
.figgrid .g-tall { grid-column: span 2; }

/* flow / architecture diagram (dark native) */
.flow {
  display: flex;
  flex-wrap: wrap;
  border: 1px solid var(--border);
  background: var(--surface);
}
.flow .node {
  flex: 1 1 0;
  min-width: 160px;
  padding: 22px 20px;
  border-right: 1px solid var(--border);
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.flow .node:last-child { border-right: none; }
.flow .node .ntag {
  font-family: var(--mono); font-size: 10px; letter-spacing: 0.16em;
  text-transform: uppercase; color: var(--green);
}
.flow .node.cyan .ntag { color: var(--cyan); }
.flow .node.coral .ntag { color: var(--coral); }
.flow .node .nh { font-family: var(--display); font-weight: 600; font-size: 16px; color: var(--white); line-height: 1.2; }
.flow .node .np { font-size: 12.5px; color: var(--text-dim); line-height: 1.5; }
.flow .node:not(:last-child)::after {
  content: "→";
  position: absolute; right: -9px; top: 26px;
  color: var(--text-faint); font-size: 15px;
  background: var(--bg); width: 18px; text-align: center; z-index: 2;
}
.flow.loop { border-bottom: none; }
.flow-return {
  border: 1px solid var(--border); border-top: none;
  padding: 11px 20px;
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.1em;
  color: var(--green); text-transform: uppercase;
  display: flex; align-items: center; gap: 10px;
}
.flow-return::before { content: "↺"; font-size: 15px; }

/* charts */
.chartwrap { border: 1px solid var(--border); background: var(--surface); padding: 26px 26px 18px; }
.chart-head { display: flex; justify-content: space-between; align-items: baseline; margin-bottom: 18px; flex-wrap: wrap; gap: 8px; }
.chart-head .ct { font-family: var(--mono); font-size: 12px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--text); }
.chart-head .cs { font-family: var(--mono); font-size: 11px; color: var(--text-faint); }
svg.chart { width: 100%; height: auto; display: block; }
svg.chart .axis { stroke: var(--border-2); stroke-width: 1; }
svg.chart .grid { stroke: rgba(255,255,255,0.05); stroke-width: 1; }
svg.chart .tick { font-family: var(--mono); font-size: 10px; fill: var(--text-faint); }
svg.chart .alabel { font-family: var(--mono); font-size: 11px; fill: var(--text-dim); letter-spacing: 0.04em; }
svg.chart .pt { fill: var(--green); }
svg.chart .ln { fill: none; stroke: var(--cyan); stroke-width: 1.5; }
svg.chart .bar { fill: var(--cyan); }
svg.chart .barval { font-family: var(--mono); font-size: 12px; fill: var(--white); }
svg.chart .barlbl { font-family: var(--mono); font-size: 11px; fill: var(--text-dim); }

/* equations */
.eqblock {
  border-left: 2px solid var(--green);
  background: var(--surface);
  padding: 18px 24px;
  margin: 16px 0;
  overflow-x: auto;
  color: var(--text);
}
.eqblock .katex { font-size: 1.18em; }
.eqcap { font-family: var(--mono); font-size: 12px; color: var(--text-faint); margin-top: 10px; letter-spacing: 0.02em; }

/* downloads */
.downloads { border: 1px solid var(--border); }
.dl-row {
  display: flex; justify-content: space-between; align-items: center;
  padding: 17px 22px; border-bottom: 1px solid var(--border);
  transition: background .16s;
}
.dl-row:last-child { border-bottom: none; }
.dl-row:hover { background: var(--surface); }
.dl-info { display: flex; align-items: center; gap: 14px; }
.dl-icon { font-family: var(--mono); font-size: 10px; letter-spacing: 0.06em; padding: 5px 9px; border: 1px solid var(--border-2); color: var(--cyan); flex: none; }
.dl-name { font-size: 14px; color: var(--text); }
.dl-desc { font-size: 12.5px; color: var(--text-faint); margin-top: 2px; }
.dl-go { font-family: var(--mono); font-size: 11px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--green); white-space: nowrap; }

/* hero meta downloads inline */
.hero-links { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 22px; }

/* status pill */
.status-pill {
  font-family: var(--mono); font-size: 10px; letter-spacing: 0.1em; text-transform: uppercase;
  padding: 3px 9px; border-radius: 1px; margin-left: 10px;
}
.status-pill.current { background: var(--green-soft); color: var(--green); border: 1px solid rgba(52,226,122,0.4); }
.status-pill.pub { background: var(--cyan-soft); color: var(--cyan); border: 1px solid rgba(43,182,232,0.4); }

@media (max-width: 860px) {
  .figgrid { grid-template-columns: repeat(2, 1fr); }
  .figgrid .g-wide, .figgrid .g-half, .figgrid .g-third, .figgrid .g-tall { grid-column: span 2; }
  .flow .node { flex-basis: 100%; border-right: none; border-bottom: 1px solid var(--border); }
  .flow .node:last-child { border-bottom: none; }
  .flow .node:not(:last-child)::after { content: "↓"; right: auto; left: 22px; top: auto; bottom: -9px; }
  .lead-grid { grid-template-columns: 1fr; gap: 32px; }
  .hero-split { grid-template-columns: 1fr; }
  .methodgrid { grid-template-columns: 1fr; }
  .chart-row { grid-template-columns: 1fr; }
  .eqgrid { grid-template-columns: 1fr; }
}