<style>
/* =============================================================== *
 * HYDRA — Fluid Power Lab & Blood Pump Station
 * =============================================================== */
:root {
  --plasma-red: #8b1a1a;
  --arterial-red: #c41e3a;
  --venous-red: #5c1010;
  --lymph-white: #f4f8fc;
  --vein-blue: #2c4a7c;
  --artery-blue: #4a6fa5;
  --oil-gold: #c9a961;
  --electrolyte-cyan: #5fb3c4;
  --congestion-pink: #d97a8a;
  --medium: #f0f4f8;
  --fluid-bg: #f0f4f8;
  --border-fluid: rgba(160, 190, 210, 0.4);
  --shadow-fluid: 0 4px 16px rgba(100, 140, 180, 0.15), inset 0 1px 0 rgba(255,255,255,0.8);
  --text-primary: #1a2a3a;
  --text-body: #3a4a5a;
  --text-muted: #6a7a8a;
  --ff-head: "Quicksand", "Nunito", "Segoe UI", system-ui, sans-serif;
  --ff-body: "Nunito", "Inter", "Segoe UI", system-ui, sans-serif;
  --ff-mono: "JetBrains Mono", "Share Tech Mono", "Consolas", monospace;
  --fluid-border: 1px solid var(--border-fluid);
  --fluid-shadow: var(--shadow-fluid);
  --fluid-radius: 16px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0; background: var(--fluid-bg); color: var(--text-body);
  font-family: var(--ff-body); font-size: 15px; line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  background-image:
    radial-gradient(circle at 12% 18%, rgba(196,30,58,0.06) 0%, transparent 22%),
    radial-gradient(circle at 88% 42%, rgba(44,74,124,0.06) 0%, transparent 24%),
    radial-gradient(circle at 32% 78%, rgba(95,179,196,0.05) 0%, transparent 20%),
    radial-gradient(circle at 70% 88%, rgba(201,169,97,0.05) 0%, transparent 18%);
  overflow-x: hidden;
}
h1,h2,h3,h4,h5 { font-family: var(--ff-head); font-weight: 700; line-height: 1.2; margin: 0 0 .5em; color: var(--text-primary); letter-spacing: 0.01em; }
h1 { font-size: clamp(28px, 4vw, 46px); }
h2 { font-size: clamp(22px, 2.6vw, 30px); }
h3 { font-size: clamp(17px, 1.8vw, 21px); }
a { color: var(--vein-blue); text-decoration: none; transition: color .2s, text-shadow .2s; }
a:hover { color: var(--arterial-red); text-shadow: 0 0 6px rgba(196,30,58,0.3); }
img { max-width: 100%; display: block; }
p { margin: 0 0 1em; color: var(--text-body); }
.mono { font-family: var(--ff-mono); }
.muted { color: var(--text-muted); }

/* ambient canvas */
#hydra-canvas { position: fixed; inset: 0; width: 100%; height: 100%; z-index: 0; pointer-events: none; opacity: .55; }
#main, .hydra-main, .site-header, .site-footer { position: relative; z-index: 1; }

/* scrollbar — transparent capillary tube with red liquid */
::-webkit-scrollbar { width: 12px; }
::-webkit-scrollbar-track { background: rgba(240,244,248,0.8); border-left: 1px solid rgba(160,190,210,0.3); border-radius: 6px; }
::-webkit-scrollbar-thumb {
  background: linear-gradient(180deg, var(--arterial-red), var(--plasma-red));
  border-radius: 8px; border: 3px solid rgba(244,248,252,0.6);
  box-shadow: 0 0 8px rgba(196,30,58,0.3), inset 0 1px 0 rgba(255,255,255,0.4);
}
::-webkit-scrollbar-thumb:hover { background: linear-gradient(180deg, var(--oil-gold), var(--arterial-red)); }

/* layout */
.layout-with-sidebar { display: grid; grid-template-columns: 1fr; max-width: 1340px; margin: 0 auto; gap: 28px; padding: 0 18px; }
@media (min-width: 1000px) { .layout-with-sidebar { grid-template-columns: 1fr 320px; } }
.layout-main { min-width: 0; }
.eyebrow { display:inline-block; font-family: var(--ff-head); font-size: 11px; letter-spacing: .22em; text-transform: uppercase; color: var(--arterial-red); background: rgba(244,248,252,0.8); padding: 6px 14px; border: var(--fluid-border); border-radius: 20px; box-shadow: var(--fluid-shadow); }
.section-head { margin: 32px 0 18px; }
.section-head h2 { margin-top: 10px; color: var(--text-primary); }
.section-head p { color: var(--text-body); max-width: 65ch; }

/* ---------- header ---------- */
.site-header { position: sticky; top: 0; z-index: 50; background: rgba(240,244,248,0.88); backdrop-filter: blur(12px); border-bottom: var(--fluid-border); box-shadow: var(--fluid-shadow); }
.header-inner { display: flex; align-items: center; gap: 16px; max-width: 1340px; margin: 0 auto; padding: 12px 18px; flex-wrap: wrap; }
.brand { display: flex; align-items: center; gap: 14px; }
.brand-mark { width: 52px; height: 52px; filter: drop-shadow(0 2px 8px rgba(44,74,124,0.3)); }
.brand-mark-pulse { transform-origin: 40px 40px; }
.brand-name { font-family: var(--ff-head); font-weight: 700; font-size: 22px; letter-spacing: .14em; display:block; color: var(--plasma-red); text-shadow: 0 0 8px rgba(196,30,58,0.2); }
.brand-tag { font-size: 10px; letter-spacing: .20em; color: var(--oil-gold); text-transform: uppercase; font-family: var(--ff-head); font-weight: 600; }
.main-nav { display: flex; gap: 4px; margin-left: auto; flex-wrap: wrap; }
.main-nav a {
  font-family: var(--ff-head); font-size: 12px; font-weight: 600; letter-spacing: .14em;
  padding: 9px 16px; color: var(--text-body); border: 1px solid transparent;
  border-radius: 20px; transition: all .2s; text-transform: uppercase;
}
.main-nav a:hover { background: rgba(196,30,58,0.08); color: var(--arterial-red); border-color: var(--border-fluid); box-shadow: var(--fluid-shadow); }
.main-nav a.active { background: rgba(196,30,58,0.12); color: var(--plasma-red); border-color: var(--arterial-red); box-shadow: 0 0 10px rgba(196,30,58,0.2); }
.nav-toggle { display:none; font-family: var(--ff-head); font-weight:700; letter-spacing:.14em; background: rgba(196,30,58,0.1); color: var(--plasma-red); border:var(--fluid-border); padding:8px 14px; cursor:pointer; border-radius:20px; text-transform: uppercase; }
@media (max-width: 820px) {
  .nav-toggle { display: block; margin-left: auto; }
  .main-nav { display: none; width: 100%; }
  .main-nav.open { display: flex; }
}

/* ---------- HERO: Heart Chambers & Blood Pump ---------- */
.heart-chambers {
  position: relative; margin: 24px 0; padding: 30px 22px;
  background:
    radial-gradient(ellipse at 30% 40%, rgba(196,30,58,0.08) 0%, transparent 50%),
    radial-gradient(ellipse at 70% 60%, rgba(44,74,124,0.08) 0%, transparent 50%),
    rgba(244,248,252,0.6);
  border: var(--fluid-border); border-radius: 60% 60% 40% 40% / 30% 30% 50% 50%;
  box-shadow: var(--fluid-shadow), inset 0 0 60px rgba(160,190,210,0.15);
  overflow: hidden;
}
.heart-chambers::before {
  content: ""; position: absolute; inset: 0; pointer-events: none; opacity: 0.06;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 200 200'><g stroke='%232c4a7c' stroke-width='0.8' fill='none'><path d='M100 20 L80 50 L60 80 L40 120'/><path d='M100 20 L120 50 L140 80 L160 120'/><path d='M100 20 L100 60 L100 100 L100 140'/><path d='M40 120 L60 140 L80 160'/><path d='M160 120 L140 140 L120 160'/><circle cx='100' cy='20' r='4' fill='%23c41e3a'/><circle cx='40' cy='120' r='3' fill='%23c9a961'/><circle cx='160' cy='120' r='3' fill='%235fb3c4'/></g></svg>");
  background-size: 320px 320px;
}
.heart-grid {
  position: relative; z-index: 2;
  display: grid; grid-template-columns: repeat(3, 1fr);
  gap: 12px; max-width: 920px; margin: 0 auto;
}
@media (max-width: 700px) { .heart-grid { grid-template-columns: repeat(2, 1fr); } }

/* chamber — rounded pouch-shaped blood-filled cavity */
.chamber {
  position: relative; aspect-ratio: 1 / 1.05; cursor: pointer;
  border-radius: 50% 50% 30% 30% / 60% 60% 40% 40%;
  background: radial-gradient(circle at 40% 35%, var(--chamber-bg, rgba(196,30,58,0.25)), var(--chamber-bg-deep, rgba(92,16,16,0.4)));
  border: 1px solid var(--chamber-accent, var(--arterial-red));
  box-shadow: var(--fluid-shadow), inset 0 0 30px rgba(92,16,16,0.2), inset 0 2px 0 rgba(255,255,255,0.6);
  overflow: hidden; transition: transform .3s, box-shadow .3s;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  padding: 10px;
}
.chamber.arterial { --chamber-bg: rgba(196,30,58,0.22); --chamber-bg-deep: rgba(139,26,26,0.45); --chamber-accent: var(--arterial-red); }
.chamber.venous { --chamber-bg: rgba(44,74,124,0.22); --chamber-bg-deep: rgba(26,40,76,0.45); --chamber-accent: var(--vein-blue); }
.chamber:hover { box-shadow: 0 0 24px var(--chamber-accent), inset 0 0 30px rgba(92,16,16,0.2), inset 0 2px 0 rgba(255,255,255,0.7); }
.chamber-image {
  width: 78%; height: 60%; border-radius: 50% 50% 40% 40% / 50% 50% 50% 50%; object-fit: cover;
  border: 1px solid rgba(244,248,252,0.5);
  box-shadow: 0 0 12px var(--chamber-accent), inset 0 1px 0 rgba(255,255,255,0.4);
  opacity: 0.85; transition: opacity .3s, filter .3s;
}
/* red blood cells floating around the image */
.blood-cells { position: absolute; inset: 0; pointer-events: none; z-index: 2; }
.blood-cell {
  position: absolute; width: 8px; height: 7px; border-radius: 50%;
  background: radial-gradient(circle at 35% 35%, #e04a5a, #8b1a1a);
  box-shadow: 0 0 4px rgba(196,30,58,0.5), inset 0 1px 0 rgba(255,255,255,0.4);
  opacity: 0.7;
}
/* valve flap between chambers */
.valve-flap {
  position: absolute; width: 14px; height: 18px; z-index: 3; pointer-events: none;
  background: linear-gradient(180deg, var(--oil-gold), rgba(201,169,97,0.4));
  clip-path: polygon(50% 0%, 100% 100%, 0% 100%);
  transform-origin: top center; opacity: 0.8;
}
.chamber-label { position: relative; z-index: 3; margin-top: 8px; text-align: center; }
.chamber-label b { display:block; font-family: var(--ff-head); font-size: 11px; color: var(--text-primary); }
.chamber-label span { color: var(--oil-gold); font-family: var(--ff-mono); font-size: 9px; font-weight: 700; letter-spacing: .06em; text-transform: uppercase; }

/* perfusion band across chambers */
.perfusion-band { position: absolute; top: 0; bottom: 0; width: 40px; z-index: 1; pointer-events: none; background: linear-gradient(90deg, transparent, rgba(196,30,58,0.25), transparent); }

/* ---------- chamber strip ---------- */
.chamber-strip { display:flex; gap:8px; flex-wrap:wrap; margin: 22px 0; }
.chamber-strip a {
  font-family: var(--ff-head); font-size: 11px; font-weight: 600; letter-spacing: .12em;
  padding: 8px 14px; background: rgba(244,248,252,0.8); color: var(--text-body);
  border: var(--fluid-border); border-radius: 20px; transition: all .2s; text-transform: uppercase;
}
.chamber-strip a:hover, .chamber-strip a.active { background: rgba(196,30,58,0.12); color: var(--plasma-red); border-color: var(--arterial-red); box-shadow: var(--fluid-shadow); }

/* ---------- bands ---------- */
.energy-band { margin: 36px 0; padding: 22px; background: rgba(244,248,252,0.6); border: var(--fluid-border); border-radius: var(--fluid-radius); box-shadow: var(--fluid-shadow); position: relative; overflow: hidden; }
.energy-band::before { content: ""; position: absolute; inset: 0; pointer-events: none; opacity: 0.08; background-image: repeating-linear-gradient(90deg, transparent 0 22px, rgba(44,74,124,0.4) 22px 23px); }
.band-head { position: relative; z-index: 1; margin-bottom: 14px; }
.band-title { color: var(--plasma-red); }
.band-sub { color: var(--text-muted); font-family: var(--ff-mono); font-size: 12px; }
.card-stream { position: relative; z-index: 1; display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 22px; }
.related-stream { grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); }

/* ---------- capillary bed ---------- */
.capillary-bed {
  position: relative; padding: 22px; margin: 24px 0;
  background: rgba(244,248,252,0.5); border: var(--fluid-border); border-radius: var(--fluid-radius);
  box-shadow: var(--fluid-shadow); overflow: hidden;
}
.capillary-bed::before {
  content: ""; position: absolute; inset: 0; pointer-events: none; z-index: 0; opacity: 0.14;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 200 200'><g stroke='%23c41e3a' stroke-width='0.5' fill='none' opacity='0.6'><path d='M10 20 Q60 40 120 30 T190 50'/><path d='M10 60 Q40 80 90 70 T160 90 T190 80'/><path d='M10 100 Q50 120 100 110 T180 130'/><path d='M10 140 Q60 160 110 150 T190 170'/></g><g stroke='%232c4a7c' stroke-width='0.5' fill='none' opacity='0.5'><path d='M10 40 Q70 60 130 50 T190 70'/><path d='M10 80 Q50 100 100 90 T170 110'/><path d='M10 120 Q60 140 110 130 T190 150'/></g></svg>");
  background-size: 380px 380px;
}

/* Card 1 — Filtrate Drop training card (teardrop) */
.filtrate-drop {
  position: relative; display: flex; flex-direction: column; align-items: center; gap: 8px;
  cursor: pointer;
  background: linear-gradient(135deg, rgba(244,248,252,0.9), rgba(200,220,240,0.7));
  border: 1px solid rgba(160,190,210,0.5);
  border-radius: 50% 50% 50% 50% / 60% 60% 40% 40%;
  clip-path: polygon(50% 0%, 100% 35%, 100% 75%, 75% 100%, 25% 100%, 0% 75%, 0% 35%);
  box-shadow: var(--fluid-shadow), inset 0 2px 0 rgba(255,255,255,0.9), inset 0 -8px 16px rgba(160,190,210,0.2);
  padding: 22px 16px 16px; min-height: 280px; overflow: hidden;
  transition: transform .25s, box-shadow .25s;
}
.filtrate-drop:hover { box-shadow: 0 6px 24px rgba(196,30,58,0.2), inset 0 2px 0 rgba(255,255,255,0.9); }
.drop-image-wrap { position: relative; width: 100%; aspect-ratio: 4/3; border-radius: 50% 50% 30% 30% / 50% 50% 40% 40%; overflow: hidden; border: 1px solid var(--border-fluid); box-shadow: 0 0 12px var(--chamber-accent, var(--arterial-red)); }
.drop-image { width: 100%; height: 100%; object-fit: cover; filter: contrast(1.05) saturate(1.05); transition: transform .3s; }
.drop-highlight { position: absolute; top: 6px; left: 8px; width: 14px; height: 14px; border-radius: 50%; background: radial-gradient(circle, rgba(255,255,255,0.9), transparent 70%); pointer-events: none; }
.drop-title { font-family: var(--ff-head); font-weight: 700; font-size: 15px; color: var(--text-primary); text-align: center; }
.drop-meta { font-family: var(--ff-mono); font-size: 11px; color: var(--oil-gold); letter-spacing: .04em; font-weight: 700; text-align: center; }
.drop-excerpt { font-size: 12px; color: var(--text-body); opacity: .9; text-align: center; }

/* Card 2 — Lymphatic Vessel feature card (transparent tube) */
.lymphatic-vessel {
  position: relative; display: grid; grid-template-columns: 1fr; gap: 0;
  border: var(--fluid-border); border-radius: 30px; overflow: hidden;
  background: linear-gradient(180deg, rgba(244,248,252,0.85), rgba(220,230,240,0.7));
  box-shadow: var(--fluid-shadow); transition: transform .25s;
}
.lymphatic-vessel:hover { transform: translateY(-3px); border-color: var(--electrolyte-cyan); }
@media (min-width: 640px) { .lymphatic-vessel { grid-template-columns: 240px 1fr; } }
.lymph-img-wrap { position: relative; width: 100%; min-height: 180px; overflow: hidden; }
.lymph-img { width: 100%; height: 100%; object-fit: cover; filter: contrast(1.05) saturate(1.05); }
.lymph-node-mark { position: absolute; top: 50%; left: 50%; transform: translate(-50%,-50%); width: 80px; height: 60px; border-radius: 50%; border: 2px solid var(--electrolyte-cyan); background: radial-gradient(circle, rgba(95,179,196,0.3), transparent); box-shadow: 0 0 14px var(--electrolyte-cyan); pointer-events: none; }
.lymph-body { padding: 18px; position: relative; }
.lymph-tube { position: absolute; top: 0; bottom: 0; left: 0; width: 6px; background: linear-gradient(180deg, rgba(95,179,196,0.3), rgba(201,169,97,0.3)); overflow: hidden; }
.lymph-particle { position: absolute; top: 10%; left: 0; width: 4px; height: 4px; border-radius: 50%; background: var(--oil-gold); box-shadow: 0 0 4px var(--oil-gold); }
.lymph-valve { position: absolute; left: 0; width: 6px; height: 8px; background: var(--electrolyte-cyan); clip-path: polygon(50% 100%, 100% 0%, 0% 0%); transform-origin: bottom center; opacity: 0.7; }
.lymph-body h3 { color: var(--text-primary); position: relative; z-index: 1; }
.lymph-meta { font-family: var(--ff-mono); font-size: 12px; color: var(--oil-gold); letter-spacing: .04em; font-weight: 700; position: relative; z-index: 1; }
.lymph-excerpt { font-size: 14px; color: var(--text-body); position: relative; z-index: 1; }

/* Card 3 — Wandering Cell quick news (amoeba) */
.wandering-cell {
  position: relative; display: flex; align-items: center; gap: 14px;
  background: radial-gradient(circle at 16% 50%, rgba(95,179,196,0.22), transparent 45%), rgba(244,248,252,0.8);
  border: 1px solid rgba(95,179,196,0.4); padding: 14px 18px 14px 60px;
  border-radius: 42% 58% 40% 60% / 50% 45% 55% 50%; box-shadow: var(--fluid-shadow); transition: transform .2s;
  min-height: 70px; overflow: hidden;
}
.wandering-cell:hover { transform: translateX(4px); border-color: var(--congestion-pink); }
.cell-orb { position: absolute; left: 18px; top: 50%; transform: translateY(-50%); width: 30px; height: 30px; border-radius: 48% 52% 45% 55% / 50% 48% 52% 50%; background: radial-gradient(circle at 30% 30%, rgba(217,122,138,0.8), rgba(95,179,196,0.5)); border: 1px solid rgba(95,179,196,0.6); box-shadow: 0 0 12px var(--electrolyte-cyan); }
.cell-nucleus { position: absolute; left: 27px; top: 50%; transform: translateY(-50%); width: 12px; height: 12px; border-radius: 50%; background: var(--congestion-pink); opacity: 0.8; }
.cell-title { font-family: var(--ff-head); font-weight: 700; font-size: 14px; color: var(--text-primary); }
.cell-meta { font-family: var(--ff-mono); font-size: 11px; color: var(--oil-gold); letter-spacing: .04em; font-weight: 700; }

/* stamped tag chips */
.stamped-tags-row { display:flex; flex-wrap:wrap; gap:8px; margin: 14px 0; position: relative; z-index: 1; }
.stamped-tag {
  display:inline-flex; align-items:center; gap:6px;
  background: rgba(196,30,58,0.10); color: var(--plasma-red);
  padding: 7px 14px; font-family: var(--ff-mono); font-size: 11px; font-weight: 700;
  letter-spacing: .06em; text-transform: uppercase;
  border: 1px solid rgba(196,30,58,0.4); border-radius: 20px;
  transition: transform .15s, box-shadow .15s;
}
.stamped-tag:hover { transform: translateY(-2px); box-shadow: 0 0 10px rgba(196,30,58,0.3); }

/* ---------- sidebar ---------- */
.layout-sidebar { display: flex; flex-direction: column; gap: 20px; }
.side-block { background: rgba(244,248,252,0.75); border: var(--fluid-border); box-shadow: var(--fluid-shadow); padding: 16px; border-radius: var(--fluid-radius); backdrop-filter: blur(8px); }
.side-block h3, .side-block h4 { font-family: var(--ff-head); font-size: 12px; letter-spacing: .16em; text-transform: uppercase; color: var(--plasma-red); border-bottom: 1px solid var(--border-fluid); padding-bottom: 8px; margin-bottom: 12px; }

/* Sphygmomanometer (blood pressure) hot list */
.sphygmomanometer { background: rgba(244,248,252,0.7); border: 1px solid rgba(44,74,124,0.3); border-radius: 12px; padding: 12px; display: flex; flex-direction: column; gap: 8px; }
.bp-row { display: flex; align-items: center; gap: 10px; padding: 6px 8px; background: rgba(240,244,248,0.6); border-radius: 8px; transition: transform .2s; text-decoration: none; }
.bp-row:hover { transform: translateX(3px); background: rgba(196,30,58,0.06); }
.bp-tube { position: relative; width: 8px; height: 40px; background: rgba(44,74,124,0.15); border-radius: 4px; overflow: hidden; border: 1px solid rgba(44,74,124,0.3); flex-shrink: 0; }
.mercury-column { position: absolute; bottom: 0; left: 0; right: 0; background: linear-gradient(180deg, var(--oil-gold), #b0b0b0); border-radius: 0 0 4px 4px; box-shadow: inset 0 1px 0 rgba(255,255,255,0.4); }
.bp-info { flex: 1; min-width: 0; }
.bp-rank { font-family: var(--ff-mono); font-size: 10px; color: var(--text-muted); }
.bp-title { font-family: var(--ff-head); font-size: 12px; font-weight: 700; color: var(--text-primary); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.bp-reading { font-family: var(--ff-mono); font-size: 11px; color: var(--arterial-red); font-weight: 700; }
.scent-hint { font-size: 11px; color: var(--text-muted); margin-top: 8px; font-style: italic; text-align: center; }

/* Blood rheology comments — rotating rheometer chart */
.rheometer { position: relative; height: 120px; display: flex; align-items: center; justify-content: center; background: rgba(240,244,248,0.4); border-radius: 12px; border: 1px solid rgba(44,74,124,0.2); overflow: hidden; }
.rheometer-svg { position: absolute; inset: 0; width: 100%; height: 100%; }
.rheometer-ring { transform-origin: center; }
.rheometer-center { position: relative; z-index: 2; font-family: var(--ff-mono); font-size: 10px; color: var(--plasma-red); text-align: center; }
.rheology-list { list-style: none; padding: 0; margin: 8px 0 0; display: flex; flex-direction: column; gap: 6px; }
.rheology-item { font-family: var(--ff-mono); font-size: 11px; color: var(--text-body); padding: 6px 10px; background: rgba(244,248,252,0.6); border-left: 3px solid var(--arterial-red); border-radius: 4px; }
.rheology-item .rh-meta { color: var(--oil-gold); display: block; font-size: 10px; }

/* ESR voting — erythrocyte sedimentation rate tubes */
.esr-vote { position: relative; padding: 8px; }
.esr-readout { font-family: var(--ff-mono); font-size: 16px; font-weight: bold; color: var(--plasma-red); text-align: center; text-shadow: 0 0 6px rgba(196,30,58,0.2); margin: 8px 0; }
.esr-tubes { display: flex; gap: 16px; justify-content: center; margin: 12px 0; }
.esr-tube { position: relative; width: 24px; height: 100px; background: rgba(244,248,252,0.6); border: 1px solid rgba(44,74,124,0.3); border-radius: 12px 12px 4px 4px; overflow: hidden; cursor: pointer; transition: transform .2s; }
.esr-tube:hover { transform: scale(1.05); }
.esr-plasma { position: absolute; top: 0; left: 0; right: 0; height: 20%; background: linear-gradient(180deg, rgba(244,248,252,0.9), rgba(220,230,240,0.7)); transition: height .4s; }
.esr-cells { position: absolute; bottom: 0; left: 0; right: 0; height: 80%; background: linear-gradient(180deg, var(--arterial-red), var(--venous-red)); transition: height .4s; }
.esr-label { text-align: center; font-family: var(--ff-mono); font-size: 10px; color: var(--text-muted); margin-top: 4px; }
.ion-splash { position: absolute; width: 6px; height: 6px; border-radius: 50%; pointer-events: none; left: 50%; top: 50%; }

/* pulse wave calendar */
.pulse-calendar { position: relative; height: 110px; display: flex; align-items: flex-end; gap: 4px; padding: 8px; background: rgba(240,244,248,0.4); border-radius: 12px; border: 1px solid rgba(44,74,124,0.2); }
.pulse-bar { flex: 1; background: linear-gradient(180deg, var(--arterial-red), rgba(196,30,58,0.2)); border-radius: 4px 4px 0 0; box-shadow: 0 0 6px rgba(196,30,58,0.3); min-height: 4px; cursor: pointer; }
.pulse-bar.today { background: linear-gradient(180deg, var(--oil-gold), rgba(201,169,97,0.2)); box-shadow: 0 0 10px rgba(201,169,97,0.5); }
.pulse-axis-x { font-family: var(--ff-mono); font-size: 9px; color: var(--text-muted); letter-spacing: .10em; text-transform: uppercase; text-align: center; margin-top: 6px; }

/* ---------- pagination ---------- */
.pagination { display:flex; gap: 6px; justify-content: center; margin: 28px 0; flex-wrap: wrap; }
.pagination a, .pagination span { font-family: var(--ff-head); font-weight: 700; padding: 8px 14px; border: var(--fluid-border); background: rgba(244,248,252,0.8); color: var(--text-body); border-radius: 20px; }
.pagination a:hover { background: rgba(196,30,58,0.1); color: var(--plasma-red); border-color: var(--arterial-red); box-shadow: var(--fluid-shadow); }
.pagination .current { background: rgba(196,30,58,0.15); color: var(--plasma-red); border-color: var(--arterial-red); box-shadow: 0 0 10px rgba(196,30,58,0.2); }

/* ---------- detail page ---------- */
.detail-breadcrumb { font-family: var(--ff-mono); font-size: 12px; color: var(--text-muted); margin-bottom: 16px; display:flex; gap:8px; flex-wrap: wrap; align-items: center; letter-spacing: .06em; }
.detail-breadcrumb a { color: var(--vein-blue); }
.hydra-detail { background: rgba(244,248,252,0.7); border: var(--fluid-border); border-radius: var(--fluid-radius); box-shadow: var(--fluid-shadow); padding: 26px; }
.detail-head { margin-bottom: 18px; }
.chamber-tagline { font-family: var(--ff-mono); font-size: 12px; color: var(--oil-gold); letter-spacing: .12em; text-transform: uppercase; margin-bottom: 6px; }
.detail-title { color: var(--text-primary); text-shadow: 0 0 8px rgba(196,30,58,0.15); }
.detail-meta { font-family: var(--ff-mono); font-size: 13px; color: var(--text-muted); }
.meta-chamber { color: var(--vein-blue); }
.meta-dot { color: var(--text-muted); margin: 0 6px; }
.meta-year { color: var(--text-body); }

.hydra-seal { position: relative; width: 100%; max-width: 420px; margin: 0 auto 18px; aspect-ratio: 1; }
.seal-node { position: absolute; inset: 0; border: 2px solid var(--arterial-red); border-radius: 50% 50% 30% 30% / 60% 60% 40% 40%; box-shadow: 0 0 20px var(--chamber-accent, var(--arterial-red)); overflow: hidden; }
.seal-image { width: 100%; height: 100%; object-fit: cover; filter: contrast(1.05) saturate(1.05); }
.seal-glow { position:absolute; inset:0; background: radial-gradient(circle at 30% 30%, rgba(196,30,58,0.2), transparent 60%); pointer-events: none; }

.hydra-stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)); gap: 10px; margin: 18px 0; }
.stat-block { background: rgba(244,248,252,0.75); border: var(--fluid-border); padding: 10px 14px; border-radius: 10px; box-shadow: var(--fluid-shadow); }
.stat-label { display: block; font-family: var(--ff-mono); font-size: 10px; color: var(--text-muted); letter-spacing: .10em; text-transform: uppercase; }
.stat-value { display: block; font-family: var(--ff-head); font-size: 20px; color: var(--plasma-red); margin: 4px 0; }
.stat-value em { font-style: normal; font-size: 12px; color: var(--text-muted); }
.stat-bar { display: block; height: 4px; background: rgba(44,74,124,0.15); border-radius: 2px; overflow: hidden; }
.stat-bar i { display: block; height: 100%; background: linear-gradient(90deg, var(--arterial-red), var(--oil-gold)); box-shadow: 0 0 4px var(--arterial-red); }

.matrix-flow { margin: 18px 0; }
.flow-title { color: var(--text-primary); border-bottom: 1px solid var(--border-fluid); padding-bottom: 8px; }
.matrix-text { font-size: 15px; line-height: 1.75; color: var(--text-body); margin: 0 0 1em; }
.matrix-list { list-style: none; padding: 0; }
.matrix-list li { padding: 8px 0; border-bottom: 1px dashed rgba(44,74,124,0.2); color: var(--text-body); }
.matrix-list li b { color: var(--plasma-red); }

.ion-stamps { display: flex; gap: 6px; flex-wrap: wrap; margin: 16px 0; }
.ion-chip { font-family: var(--ff-mono); font-size: 10px; padding: 4px 10px; background: rgba(196,30,58,0.10); color: var(--plasma-red); border: 1px solid rgba(196,30,58,0.4); border-radius: 20px; letter-spacing: .06em; text-transform: uppercase; font-weight: 700; }

.external-link { margin: 18px 0; }
.external-anchor { display: inline-block; padding: 10px 18px; background: rgba(196,30,58,0.10); color: var(--plasma-red); border: var(--fluid-border); border-radius: 20px; font-family: var(--ff-head); font-size: 12px; font-weight: 700; letter-spacing: .10em; text-transform: uppercase; box-shadow: var(--fluid-shadow); }
.external-anchor:hover { background: rgba(201,169,97,0.15); color: var(--oil-gold); border-color: var(--oil-gold); }

.related-chamber { margin-top: 32px; }
.related-head { color: var(--plasma-red); margin-bottom: 12px; }

/* ---------- static pages ---------- */
.static-hero { margin-bottom: 24px; }
.chamber-hero { background: rgba(244,248,252,0.7); border: var(--fluid-border); border-radius: var(--fluid-radius); padding: 26px; box-shadow: var(--fluid-shadow); }
.chamber-stamp { font-family: var(--ff-mono); font-size: 12px; color: var(--oil-gold); letter-spacing: .12em; text-transform: uppercase; margin-bottom: 6px; }
.chamber-title { color: var(--text-primary); text-shadow: 0 0 8px rgba(196,30,58,0.15); }
.chamber-count { font-family: var(--ff-mono); font-size: 13px; color: var(--text-muted); }
.static-lede { font-size: 17px; color: var(--text-body); max-width: 65ch; font-style: italic; }
.static-body { background: rgba(244,248,252,0.6); border: var(--fluid-border); border-radius: var(--fluid-radius); padding: 22px; box-shadow: var(--fluid-shadow); }
.static-section { margin-bottom: 22px; }
.static-section h2 { color: var(--plasma-red); border-bottom: 1px solid var(--border-fluid); padding-bottom: 8px; }
.contact-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 14px; }
.contact-card { background: rgba(244,248,252,0.75); border: var(--fluid-border); padding: 16px; border-radius: 12px; box-shadow: var(--fluid-shadow); }
.contact-card h3 { color: var(--plasma-red); }
.contact-link { font-family: var(--ff-mono); color: var(--vein-blue); }

/* ---------- search ---------- */
.search-chamber { background: rgba(244,248,252,0.7); border: var(--fluid-border); border-radius: var(--fluid-radius); padding: 22px; box-shadow: var(--fluid-shadow); margin-top: 18px; }
.search-form { display: flex; align-items: center; gap: 8px; background: rgba(244,248,252,0.9); border: var(--fluid-border); box-shadow: var(--fluid-shadow); padding: 6px 10px; border-radius: 20px; }
.search-label { font-family: var(--ff-mono); font-size: 11px; color: var(--oil-gold); letter-spacing: .10em; text-transform: uppercase; }
.search-input { flex: 1; border: none; background: transparent; font-family: var(--ff-mono); font-size: 14px; padding: 8px; outline: none; color: var(--text-primary); }
.search-input::placeholder { color: var(--text-muted); }
.search-submit { padding: 8px 18px; background: rgba(196,30,58,0.12); color: var(--plasma-red); border: 1px solid var(--border-fluid); font-family: var(--ff-head); font-weight: 700; letter-spacing: .10em; text-transform: uppercase; cursor: pointer; border-radius: 20px; }
.search-submit:hover { background: rgba(201,169,97,0.15); color: var(--oil-gold); border-color: var(--oil-gold); }
.search-count { font-family: var(--ff-mono); font-size: 11px; color: var(--text-muted); margin-top: 10px; }
.search-results { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px,1fr)); gap: 12px; margin-top: 16px; }
.search-cell { display: flex; gap: 10px; background: rgba(244,248,252,0.75); border: var(--fluid-border); padding: 10px; box-shadow: var(--fluid-shadow); border-radius: 10px; }
.search-cell .sc-thumb { width: 56px; height: 64px; flex-shrink: 0; overflow: hidden; border: 1px solid var(--border-fluid); border-radius: 8px; }
.search-cell .sc-thumb img { width:100%; height:100%; object-fit: cover; }
.search-cell .sc-meta { display:block; font-family: var(--ff-mono); font-size: 11px; color: var(--oil-gold); letter-spacing: .04em; font-weight: 700; }
.search-cell .sc-body b { color: var(--text-primary); font-family: var(--ff-head); }

/* ---------- footer: Blood Bank & Bone Marrow Archive ---------- */
.site-footer { position: relative; margin-top: 60px; background: linear-gradient(180deg, #e8ecf0 0%, #d0d8e0 100%); border-top: 1px solid var(--border-fluid); overflow: hidden; }
.site-footer::before {
  content: ""; position: absolute; inset: 0; z-index: 0; pointer-events: none; opacity: 0.4;
  background-image: repeating-linear-gradient(90deg, transparent 0 8px, rgba(44,74,124,0.06) 8px 9px);
}
.site-footer::after {
  content: ""; position: absolute; inset: 0; z-index: 0; pointer-events: none; opacity: 0.3;
  background-image:
    radial-gradient(circle at 6% 18%, var(--arterial-red) 2px, transparent 3px),
    radial-gradient(circle at 22% 32%, var(--oil-gold) 2px, transparent 3px),
    radial-gradient(circle at 40% 14%, var(--arterial-red) 2px, transparent 3px),
    radial-gradient(circle at 58% 30%, var(--vein-blue) 2px, transparent 3px),
    radial-gradient(circle at 74% 16%, var(--arterial-red) 2px, transparent 3px),
    radial-gradient(circle at 90% 34%, var(--oil-gold) 2px, transparent 3px),
    radial-gradient(circle at 14% 70%, var(--arterial-red) 2px, transparent 3px),
    radial-gradient(circle at 36% 82%, var(--vein-blue) 2px, transparent 3px),
    radial-gradient(circle at 62% 74%, var(--oil-gold) 2px, transparent 3px),
    radial-gradient(circle at 84% 86%, var(--arterial-red) 2px, transparent 3px);
}
.blood-bank { position: relative; padding: 32px 18px 24px; overflow: hidden; }
.blood-bank-grid { position: relative; z-index: 1; display: grid; grid-template-columns: repeat(auto-fill, minmax(170px, 1fr)); gap: 16px; max-width: 1180px; margin: 0 auto; }

/* blood bag (classic archive) */
.blood-bag {
  position: relative; aspect-ratio: 1 / 1.3; cursor: pointer;
  background: linear-gradient(180deg, rgba(244,248,252,0.8), rgba(220,230,240,0.6));
  border: 1px solid var(--border-fluid); box-shadow: var(--fluid-shadow);
  border-radius: 12px 12px 30% 30% / 12px 12px 40% 40%; overflow: hidden;
  display: flex; flex-direction: column; align-items: center; justify-content: flex-end;
  padding: 12px; transition: all .25s;
}
.blood-bag:hover { transform: translateY(-3px); border-color: var(--oil-gold); box-shadow: 0 6px 20px rgba(201,169,97,0.3); }
.blood-bag img { position: relative; z-index: 2; width: 80%; height: 55%; object-fit: cover; border: 1px solid var(--border-fluid); border-radius: 8px; opacity: .7; filter: grayscale(0.3); transition: opacity .3s, filter .3s; }
.blood-bag-fill { position: absolute; bottom: 0; left: 0; right: 0; height: 65%; background: linear-gradient(180deg, transparent, var(--bag-color, rgba(196,30,58,0.3))); border-radius: 0 0 30% 30% / 0 0 40% 40%; z-index: 1; }
.blood-bag.type-a { --bag-color: rgba(196,30,58,0.35); }
.blood-bag.type-b { --bag-color: rgba(44,74,124,0.35); }
.blood-bag.type-o { --bag-color: rgba(201,169,97,0.35); }
.blood-bag.type-ab { --bag-color: rgba(217,122,138,0.35); }
.blood-bag-port { position: absolute; top: -2px; left: 50%; transform: translateX(-50%); width: 16px; height: 8px; background: var(--oil-gold); border-radius: 4px 4px 0 0; }
.bag-type-label { position: absolute; top: 8px; right: 8px; font-family: var(--ff-mono); font-size: 10px; font-weight: 700; color: var(--plasma-red); background: rgba(244,248,252,0.9); padding: 2px 6px; border-radius: 4px; z-index: 3; }
.bag-title { position: absolute; bottom: 8px; left: 50%; transform: translateX(-50%); font-family: var(--ff-head); font-size: 11px; color: var(--text-primary); text-align: center; z-index: 3; padding: 0 6px; letter-spacing: .06em; text-transform: uppercase; font-weight: 700; }

/* stem cell tree — hematopoietic differentiation */
.stem-wall { position: relative; z-index: 1; max-width: 980px; margin: 24px auto 0; padding: 16px 18px; background: rgba(244,248,252,0.7); border: var(--fluid-border); border-radius: var(--fluid-radius); }
.stem-tree { display: flex; gap: 6px; flex-wrap: wrap; align-items: center; justify-content: center; }
.stem-node { display: inline-block; padding: 6px 12px; font-family: var(--ff-mono); font-size: 10px; font-weight: 700; border-radius: 20px; letter-spacing: .10em; text-transform: uppercase; cursor: pointer; transition: transform .2s; }
.stem-root { background: rgba(196,30,58,0.18); color: var(--plasma-red); border: 1px solid rgba(196,30,58,0.5); }
.stem-branch { background: rgba(44,74,124,0.15); color: var(--vein-blue); border: 1px solid rgba(44,74,124,0.4); }
.stem-leaf { background: rgba(201,169,97,0.18); color: var(--oil-gold); border: 1px solid rgba(201,169,97,0.5); }
.stem-arrow { color: var(--text-muted); font-size: 12px; }

.footer-grid { display: grid; grid-template-columns: 1fr; gap: 22px; max-width: 1200px; margin: 0 auto; padding: 28px 18px; position: relative; z-index: 1; }
@media (min-width: 700px) { .footer-grid { grid-template-columns: 1.4fr 1fr 1fr 1.2fr; } }
.footer-col h4 { font-family: var(--ff-head); font-size: 12px; letter-spacing: .16em; text-transform: uppercase; color: var(--plasma-red); margin-bottom: 10px; border-bottom: 1px solid var(--border-fluid); padding-bottom: 6px; }
.footer-col ul { list-style: none; padding: 0; margin: 0; }
.footer-col li { padding: 4px 0; }
.footer-col a { color: var(--text-body); opacity: .9; }
.footer-col a:hover { opacity: 1; color: var(--plasma-red); }
.hydra-logo { display: flex; align-items: center; gap: 12px; margin-bottom: 14px; }
.hydra-logo .brand-mark { width: 52px; height: 52px; }
.hydra-name { font-family: var(--ff-head); font-weight: 700; font-size: 20px; letter-spacing: .14em; color: var(--plasma-red); text-shadow: 0 0 8px rgba(196,30,58,0.2); }
.hydra-tag { font-size: 10px; letter-spacing: .16em; color: var(--oil-gold); text-transform: uppercase; font-family: var(--ff-head); font-weight: 600; }

/* centrifuge subscribe — plasma separation */
.centrifuge-cell { position: relative; background: rgba(244,248,252,0.8); border: var(--fluid-border); padding: 16px; margin-top: 12px; box-shadow: var(--fluid-shadow); border-radius: var(--fluid-radius); overflow: hidden; }
.centrifuge-rotor { position: absolute; top: 12px; right: 12px; width: 50px; height: 50px; border: 2px solid var(--oil-gold); border-radius: 50%; pointer-events: none; }
.centrifuge-rotor::before, .centrifuge-rotor::after { content: ""; position: absolute; top: 50%; left: 50%; width: 18px; height: 8px; background: var(--arterial-red); border-radius: 4px; transform-origin: 0 50%; }
.centrifuge-rotor::before { transform: translateY(-50%) rotate(0deg); }
.centrifuge-rotor::after { transform: translateY(-50%) rotate(180deg); background: var(--vein-blue); }
.subscribe-form { display: flex; flex-direction: column; gap: 10px; position: relative; z-index: 1; }
.subscribe-form label { display: flex; flex-direction: column; gap: 4px; font-size: 11px; font-family: var(--ff-head); letter-spacing: .12em; text-transform: uppercase; color: var(--text-muted); }
.subscribe-form input { padding: 10px; border: var(--fluid-border); background: rgba(244,248,252,0.9); color: var(--text-primary); font-family: var(--ff-mono); font-size: 14px; border-radius: 20px; }
.subscribe-form input:focus { outline: 1px solid var(--oil-gold); box-shadow: 0 0 8px rgba(201,169,97,0.3); }
.plasma-trigger { align-self: flex-start; padding: 12px 22px; background: rgba(196,30,58,0.12); color: var(--plasma-red); border: 1px solid var(--arterial-red); font-family: var(--ff-head); font-weight: 700; letter-spacing: .12em; cursor: pointer; box-shadow: var(--fluid-shadow); text-transform: uppercase; border-radius: 20px; }
.plasma-trigger:hover { background: rgba(201,169,97,0.15); color: var(--oil-gold); border-color: var(--oil-gold); }
.subscribe-confirm { background: rgba(95,179,196,0.18); color: var(--electrolyte-cyan); padding: 12px; margin-top: 8px; font-family: var(--ff-head); font-size: 12px; letter-spacing: .08em; border: 1px solid rgba(95,179,196,0.5); text-align: center; border-radius: 8px; }
.subscribe-confirm::before { content: "PLASMA SEPARATED "; color: var(--oil-gold); font-weight: 700; }

.tagline-line { font-family: var(--ff-mono); font-size: 13px; letter-spacing: .14em; text-align: center; padding: 20px; border-top: 1px solid var(--border-fluid); border-bottom: 1px solid var(--border-fluid); color: var(--plasma-red); display: flex; align-items: center; justify-content: center; gap: 12px; text-transform: uppercase; position: relative; z-index: 1; }
.footer-bottom { text-align: center; padding: 14px; font-family: var(--ff-mono); font-size: 11px; color: var(--text-muted); letter-spacing: .10em; text-transform: uppercase; position: relative; z-index: 1; }

/* exit arrow */
.exit-arrow { position: fixed; right: 22px; bottom: 22px; width: 46px; height: 46px; background: rgba(196,30,58,0.2); color: var(--plasma-red); border: 1px solid var(--arterial-red); display: flex; align-items: center; justify-content: center; cursor: pointer; opacity: 0; pointer-events: none; transition: opacity .3s; box-shadow: 0 0 16px rgba(196,30,58,0.3); z-index: 60; border-radius: 50%; }
.exit-arrow.show { opacity: 1; pointer-events: auto; }
.exit-arrow:hover { background: rgba(201,169,97,0.25); border-color: var(--oil-gold); color: var(--oil-gold); }
.exit-arrow svg { width: 22px; height: 22px; }

/* reveal */
[data-reveal] { opacity: 0; transform: translateY(18px); transition: opacity .6s, transform .6s; }
[data-reveal].in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) { [data-reveal] { opacity:1; transform:none; } }

@keyframes valve-open-close { 0%, 100% { transform: rotateX(0deg); } 50% { transform: rotateX(55deg); } }
@keyframes drop-pending { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-6px); } }
@keyframes lymph-flow { 0% { transform: translateX(0); opacity: 0; } 30% { opacity: 0.9; } 100% { transform: translateX(100%); opacity: 0; } }
@keyframes amoeboid-move { 0%, 100% { border-radius: 42% 58% 40% 60% / 50% 45% 55% 50%; } 50% { border-radius: 58% 42% 60% 40% / 45% 50% 50% 55%; } }
@keyframes esr-sedimentation { 0% { height: 80%; } 100% { height: 55%; } }
@keyframes centrifuge-spin { 0% { transform: rotate(0deg); } 100% { transform: rotate(1440deg); } }
@keyframes heart-beat { 0%, 100% { transform: scale(1); } 50% { transform: scale(0.98); } }

@media (max-width: 600px) {
  .card-stream { grid-template-columns: 1fr; }
  .heart-grid { grid-template-columns: 1fr; }
}
</style>