/* ============================================================
   BreastGPT · Project Page
   Palette: clinical rose + ink + clean white
   ============================================================ */

:root {
  --bg: #fbf7f8;
  --bg-alt: #ffffff;
  --bg-soft: #fff0f3;
  --ink: #17111b;
  --ink-2: #473d4d;
  --muted: #786b80;
  --line: #ead8df;

  --pink: #ec4899;
  --pink-2: #e85d91;
  --rose: #fb7185;
  --plum: #6d294f;
  --purple: #6154b8;
  --amber: #d98a16;
  --teal: #168a93;
  --blue: #2f6f9f;

  --grad: linear-gradient(135deg, #b91c5c 0%, #e85d91 42%, #d98a16 100%);
  --grad-soft: linear-gradient(135deg, #fff5f7 0%, #fff 46%, #eef8f8 100%);

  --radius: 10px;
  --radius-lg: 14px;
  --shadow-sm: 0 1px 3px rgba(23, 17, 27, 0.06), 0 8px 24px rgba(109, 41, 79, 0.05);
  --shadow: 0 14px 35px rgba(23, 17, 27, 0.08);
  --shadow-lg: 0 28px 70px rgba(23, 17, 27, 0.13);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background:
    linear-gradient(rgba(109, 41, 79, 0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(109, 41, 79, 0.025) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: linear-gradient(to bottom, rgba(0,0,0,.8), transparent 55%);
}

a { color: var(--plum); text-decoration: none; transition: color .2s; }
a:hover { color: var(--pink); }

h1, h2, h3, h4 { letter-spacing: -0.02em; line-height: 1.2; margin: 0; }
p { margin: 0 0 1em; color: var(--ink-2); }
sup { font-size: 0.7em; }

/* ============================== NAV ============================== */
.nav {
  position: sticky; top: 0; z-index: 50;
  backdrop-filter: saturate(180%) blur(14px);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  background: rgba(255, 251, 252, 0.82);
  border-bottom: 1px solid var(--line);
}
.nav-inner {
  max-width: 1240px; margin: 0 auto; padding: 12px 28px;
  display: flex; align-items: center; justify-content: space-between;
}
.brand { display: flex; align-items: center; gap: 10px; font-weight: 700; }
.brand-mark {
  width: 28px; height: 28px; border-radius: 8px;
  display: inline-flex; align-items: center; justify-content: center;
  font-size: 17px; background: #fff; border: 1px solid var(--line);
  box-shadow: var(--shadow-sm);
}
.brand-name {
  background: var(--grad); -webkit-background-clip: text; background-clip: text;
  color: transparent; font-size: 18px; letter-spacing: -0.02em;
}
.nav-links { display: flex; gap: 22px; align-items: center; }
.nav-links a {
  color: var(--ink-2); font-weight: 600; font-size: 13px;
  position: relative; padding: 4px 0;
}
.nav-links a:hover { color: var(--pink); }
.nav-links a::after {
  content: ""; position: absolute; bottom: -2px; left: 0; right: 0;
  height: 2px; background: var(--grad); transform: scaleX(0); transform-origin: left;
  transition: transform .25s;
}
.nav-links a:hover::after { transform: scaleX(1); }
@media (max-width: 720px) { .nav-links { display: none; } }

/* ============================== HERO ============================== */
.hero {
  position: relative; overflow: hidden;
  padding: 88px 28px 70px;
  background: var(--grad-soft);
}
.hero-bg {
  position: absolute; inset: 0;
  background:
    linear-gradient(120deg, rgba(255,255,255,0.72), rgba(255,255,255,0.08) 48%, rgba(255,255,255,0.70)),
    radial-gradient(ellipse 620px 300px at 10% 0%, rgba(232, 93, 145, 0.16), transparent 64%),
    radial-gradient(ellipse 520px 360px at 88% 8%, rgba(22, 138, 147, 0.12), transparent 64%),
    radial-gradient(circle 560px at 50% 110%, rgba(217, 138, 22, 0.09), transparent 62%);
  pointer-events: none;
}
.hero-bg::after {
  content: "";
  position: absolute;
  inset: auto 0 0;
  height: 120px;
  background: linear-gradient(to bottom, transparent, var(--bg));
}
.hero-inner { position: relative; max-width: 1120px; margin: 0 auto; text-align: center; }

.hero-pill {
  display: inline-block; padding: 7px 14px; border-radius: 999px;
  background: rgba(255, 255, 255, 0.82); border: 1px solid rgba(234, 216, 223, 0.9);
  font-size: 11px; font-weight: 800; color: var(--plum);
  letter-spacing: 0.08em; text-transform: uppercase;
  box-shadow: var(--shadow-sm);
}
.hero-title { margin: 24px 0 18px; }
.hero-title .grad {
  display: block; font-size: clamp(58px, 10vw, 112px); font-weight: 800;
  letter-spacing: -0.045em; line-height: .95;
  background: var(--grad); -webkit-background-clip: text; background-clip: text;
  color: transparent;
}
.hero-sub {
  display: block; margin-top: 18px;
  font-size: clamp(18px, 2.2vw, 25px); font-weight: 650; color: var(--ink); line-height: 1.35;
}
.hero-tagline {
  margin: 18px auto 0; max-width: 720px;
  font-size: 16px; color: var(--ink-2); line-height: 1.65;
}
.hero-tagline b { color: var(--plum); font-weight: 700; }
.hero-pipeline {
  width: min(760px, 100%);
  margin: 24px auto 0;
  padding: 10px;
  display: grid;
  grid-template-columns: 1fr 42px 1fr 42px 1fr;
  align-items: center;
  border: 1px solid rgba(234, 216, 223, 0.86);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.74);
  box-shadow: var(--shadow-sm);
}
.hero-pipeline span {
  padding: 8px 14px;
  border-radius: 999px;
  background: #fff;
  color: var(--ink);
  font-size: 13px;
  font-weight: 750;
  white-space: nowrap;
}
.hero-pipeline i {
  display: block;
  height: 2px;
  background: linear-gradient(90deg, rgba(185, 28, 92, 0.18), rgba(185, 28, 92, 0.72));
  position: relative;
}
.hero-pipeline i::after {
  content: "";
  position: absolute;
  right: -1px;
  top: 50%;
  width: 7px;
  height: 7px;
  border-right: 2px solid rgba(185, 28, 92, 0.72);
  border-top: 2px solid rgba(185, 28, 92, 0.72);
  transform: translateY(-50%) rotate(45deg);
}
.authors { margin-top: 14px; font-size: 16px; color: var(--ink-2); font-weight: 500; }
.affil { margin-top: 4px; font-size: 14px; color: var(--muted); font-style: italic; }

.cta-row {
  margin-top: 28px; display: flex; justify-content: center; gap: 12px; flex-wrap: wrap;
}
.cta {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 11px 20px; border-radius: 999px;
  background: white; color: var(--ink) !important; font-weight: 600; font-size: 14px;
  border: 1px solid var(--line); box-shadow: var(--shadow-sm);
  transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease;
}
.cta:hover { transform: translateY(-2px); box-shadow: var(--shadow); border-color: var(--pink-2); }
.cta-primary {
  background: var(--grad); color: white !important; border: none;
}
.cta-primary:hover { color: white !important; }

.hero-figure {
  margin: 50px auto 0; max-width: 1010px;
  background: white; border-radius: var(--radius-lg);
  padding: 16px; box-shadow: var(--shadow-lg);
  border: 1px solid var(--line);
}
.hero-figure img { width: 100%; height: auto; display: block; border-radius: 9px; }
.hero-figure figcaption {
  margin-top: 14px; font-size: 13.5px; color: var(--muted);
  padding: 0 8px 4px; line-height: 1.55; text-align: left;
}

/* ============================== STATS ============================== */
.stats {
  max-width: 1160px; margin: -42px auto 0;
  position: relative; z-index: 5;
  padding: 18px;
  background: white; border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg); border: 1px solid var(--line);
  display: grid; grid-template-columns: repeat(5, 1fr); gap: 16px;
}
@media (max-width: 900px) { .stats { grid-template-columns: repeat(2, 1fr); } }
.stat { text-align: center; padding: 18px 8px; border-radius: 10px; transition: background .2s; }
.stat:hover { background: var(--bg-soft); }
.stat-num {
  font-size: clamp(32px, 4vw, 44px); font-weight: 800; letter-spacing: -0.03em;
  background: var(--grad); -webkit-background-clip: text; background-clip: text;
  color: transparent; line-height: 1;
}
.stat-num span { font-size: 0.55em; opacity: 0.7; margin-left: 2px; }
.stat-label { margin-top: 8px; font-size: 12.5px; color: var(--ink-2); font-weight: 650; }
.stat.highlight { background: linear-gradient(135deg, #fff2f5, #f0fbfb); }

/* ============================== SECTIONS ============================== */
.section {
  max-width: 1200px; margin: 0 auto; padding: 96px 28px;
}
.section-alt { background: var(--bg-alt); }
.section-alt-wrap { background: var(--bg-alt); }
section.section-alt {
  max-width: none; padding-left: 0; padding-right: 0;
  background: white; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line);
}
section.section-alt > * { max-width: 1200px; margin-left: auto; margin-right: auto; padding-left: 28px; padding-right: 28px; }
section.section-alt > .section-head { padding-top: 0; }

.section-head { text-align: center; margin-bottom: 56px; }
.section-tag {
  display: inline-block; padding: 5px 13px; border-radius: 999px;
  background: #fff; color: var(--plum); border: 1px solid var(--line);
  font-size: 12px; font-weight: 700; letter-spacing: 0.1em; text-transform: uppercase;
}
.section-head h2 {
  margin-top: 18px; font-size: clamp(30px, 4vw, 46px); font-weight: 780;
  color: var(--ink); max-width: 800px; margin-left: auto; margin-right: auto;
}
@media (min-width: 900px) {
  .section-head h2.no-wrap-title {
    max-width: none;
    white-space: nowrap;
  }
}
.section-head .lede {
  margin-top: 18px; font-size: 17px; color: var(--ink-2);
  max-width: 820px; margin-left: auto; margin-right: auto;
}

.subhead {
  margin: 60px 0 24px; font-size: 20px; font-weight: 700; color: var(--ink);
  display: flex; align-items: center; gap: 12px;
}
.subhead::before {
  content: ""; width: 4px; height: 22px; background: var(--grad); border-radius: 2px;
}

/* ============================== ANIMATED FLOW DIAGRAM ============================== */
.flow-anim {
  margin-bottom: 36px;
}
.agent-console {
  position: relative;
  overflow: hidden;
  min-height: 430px;
  padding: 22px;
  border: 1px solid rgba(234, 216, 223, 0.92);
  border-radius: var(--radius-lg);
  background:
    linear-gradient(180deg, rgba(255,255,255,0.94), rgba(255,255,255,0.78)),
    radial-gradient(circle 360px at 23% 40%, rgba(232, 93, 145, 0.13), transparent 68%),
    radial-gradient(circle 420px at 72% 42%, rgba(22, 138, 147, 0.12), transparent 70%),
    linear-gradient(rgba(109, 41, 79, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(109, 41, 79, 0.045) 1px, transparent 1px);
  background-size: auto, auto, auto, 34px 34px, 34px 34px;
  box-shadow: var(--shadow-lg);
}
.console-glow {
  position: absolute;
  inset: 22% 28%;
  border-radius: 999px;
  background: radial-gradient(circle, rgba(255,255,255,0.9), rgba(232,93,145,0.16) 34%, rgba(22,138,147,0.1) 58%, transparent 72%);
  filter: blur(8px);
  animation: consoleBreath 5.6s ease-in-out infinite;
  pointer-events: none;
}
.console-topline {
  position: relative;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 10px 12px;
  border: 1px solid rgba(234,216,223,0.86);
  border-radius: 999px;
  background: rgba(255,255,255,0.74);
  color: var(--plum);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.live-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #16a34a;
  box-shadow: 0 0 0 0 rgba(22, 163, 74, 0.35);
  animation: livePulse 1.7s ease-out infinite;
  flex: 0 0 auto;
}
.console-chip {
  padding: 5px 10px;
  border-radius: 999px;
  background: #fff;
  border: 1px solid var(--line);
  color: var(--ink-2);
  letter-spacing: 0.04em;
}
.agent-stage {
  position: relative;
  z-index: 1;
  min-height: 330px;
  display: grid;
  grid-template-columns: 1.18fr 0.82fr 1.52fr 0.92fr;
  gap: 22px;
  align-items: center;
  padding: 34px 8px 20px;
}
.agent-stage::before,
.agent-stage::after {
  content: "";
  position: absolute;
  left: 16%;
  right: 15%;
  height: 2px;
  top: 46%;
  background: linear-gradient(90deg, rgba(185,28,92,0), rgba(185,28,92,0.40), rgba(22,138,147,0.35), rgba(217,138,22,0.28), rgba(185,28,92,0));
  opacity: 0.78;
}
.agent-stage::after {
  top: 63%;
  opacity: 0.22;
  transform: translateY(12px);
}
.patient-record,
.care-plan,
.stage-card,
.router-core {
  position: relative;
  z-index: 3;
}
.patient-record,
.care-plan {
  padding: 18px;
  border-radius: 16px;
  background: rgba(255,255,255,0.82);
  border: 1px solid rgba(234,216,223,0.88);
  box-shadow: var(--shadow-sm);
  backdrop-filter: blur(10px);
}
.patient-record {
  padding: 15px;
}
.record-title {
  font-size: 12px;
  font-weight: 850;
  color: var(--plum);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.scan-stack {
  margin-top: 12px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}
.scan-tile {
  position: relative;
  display: block;
  margin: 0;
  aspect-ratio: 1.18;
  border-radius: 10px;
  border: 1px solid rgba(234,216,223,0.95);
  background-color: #111;
  box-shadow: inset 0 0 18px rgba(255,255,255,0.22), 0 10px 24px rgba(23,17,27,0.08);
  overflow: hidden;
  animation: scanFlicker 4.8s ease-in-out infinite;
}
.scan-tile img,
.scan-tile video {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
  filter: contrast(1.03) saturate(.95);
  transform: scale(1.02);
}
.scan-tile.ct {
  grid-column: 1 / -1;
  aspect-ratio: 2.35;
}
.scan-tile.ct video {
  object-position: center;
  filter: contrast(1.08) brightness(.96) saturate(.72);
}
.scan-tile::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(255,255,255,0.12), transparent 35%),
    radial-gradient(circle at 68% 30%, rgba(255,255,255,0.16), transparent 26%);
  pointer-events: none;
}
.scan-tile figcaption {
  position: absolute;
  left: 7px;
  bottom: 6px;
  z-index: 1;
  padding: 3px 7px;
  border-radius: 999px;
  background: rgba(255,255,255,0.84);
  color: var(--ink);
  font-size: 9.5px;
  font-weight: 850;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  box-shadow: 0 4px 14px rgba(23,17,27,0.12);
}
.scan-tile.mammo img {
  object-position: 60% 54%;
}
.scan-tile.us {
  animation-delay: .7s;
}
.scan-tile.us img {
  object-position: center;
}
.scan-tile.mri {
  animation-delay: 1.2s;
}
.scan-tile.mri video {
  object-position: center;
  filter: contrast(1.08) brightness(.92) saturate(.8);
}
.scan-tile.wsi {
  animation-delay: 1.8s;
}
.scan-tile.wsi img {
  filter: contrast(1.04) saturate(1.12);
}
.record-lines {
  margin-top: 14px;
  display: grid;
  gap: 7px;
}
.record-lines span {
  height: 7px;
  border-radius: 999px;
  background: linear-gradient(90deg, rgba(109,41,79,0.26), rgba(109,41,79,0.06));
}
.record-lines span:nth-child(2) { width: 76%; }
.record-lines span:nth-child(3) { width: 58%; }
.router-core {
  z-index: 5;
  width: 152px;
  height: 152px;
  margin: 0 auto;
  border-radius: 50%;
  display: grid;
  place-items: center;
  text-align: center;
  background:
    radial-gradient(circle at 38% 34%, #fff, rgba(255,255,255,0.45) 30%, transparent 31%),
    radial-gradient(circle, rgba(232,93,145,0.28), rgba(22,138,147,0.18) 52%, rgba(255,255,255,0.72) 53%);
  border: 1px solid rgba(255,255,255,0.95);
  box-shadow: 0 0 0 1px rgba(234,216,223,0.8), 0 24px 70px rgba(22,138,147,0.18);
}
.core-ring {
  position: absolute;
  inset: -13px;
  border-radius: 50%;
  border: 1px dashed rgba(109,41,79,0.36);
  animation: coreSpin 16s linear infinite;
}
.core-pulse {
  position: absolute;
  inset: 16px;
  border-radius: 50%;
  border: 1px solid rgba(232,93,145,0.45);
  animation: corePulse 2.8s ease-out infinite;
}
.core-label {
  margin-top: -10px;
  font-size: 20px;
  font-weight: 850;
  color: var(--ink);
}
.core-sub {
  position: absolute;
  top: 88px;
  font-size: 11px;
  font-weight: 750;
  color: var(--plum);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.router-note {
  position: absolute;
  z-index: 8;
  width: max-content;
  padding: 5px 8px;
  border-radius: 999px;
  background: rgba(255,255,255,0.86);
  border: 1px solid rgba(234,216,223,0.9);
  color: var(--ink-2);
  font-size: 10px;
  font-weight: 850;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  box-shadow: var(--shadow-sm);
  animation: notePulse 7.2s ease-in-out infinite;
}
.note-read {
  top: -36px;
  left: 50%;
  transform: translateX(-50%);
}
.note-select {
  top: 36%;
  right: -104px;
  animation-delay: 1.4s;
}
.note-append {
  bottom: -38px;
  left: 50%;
  transform: translateX(-50%);
  animation-delay: 2.8s;
}
.agent-lane {
  display: grid;
  gap: 14px;
}
.stage-card {
  display: grid;
  grid-template-columns: 42px 1fr auto;
  align-items: center;
  gap: 13px;
  min-height: 82px;
  padding: 15px 16px;
  border: 1px solid rgba(234,216,223,0.88);
  border-radius: 16px;
  background: rgba(255,255,255,0.84);
  box-shadow: var(--shadow-sm);
  backdrop-filter: blur(10px);
  overflow: hidden;
}
.stage-card::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 4px;
  background: var(--grad);
}
.stage-card::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.68), transparent);
  transform: translateX(-110%);
  animation: cardSweep 7.2s ease-in-out infinite;
}
.diag-card::after { animation-delay: 1.3s; }
.tx-card::after { animation-delay: 2.6s; }
.screen-card { animation: agentCall 7.2s ease-in-out infinite; }
.diag-card { animation: agentCall 7.2s ease-in-out infinite 1.45s; }
.tx-card { animation: agentCall 7.2s ease-in-out infinite 2.9s; }
.screen-card::before { background: #e85d91; }
.diag-card::before { background: #168a93; }
.tx-card::before { background: #d98a16; }
.stage-index {
  width: 38px;
  height: 38px;
  border-radius: 12px;
  display: grid;
  place-items: center;
  background: #fff5f7;
  color: var(--plum);
  font-family: 'JetBrains Mono', monospace;
  font-weight: 800;
  font-size: 13px;
}
.stage-card h3 {
  font-size: 16px;
  color: var(--ink);
}
.stage-card p {
  margin: 4px 0 0;
  color: var(--muted);
  font-size: 12.5px;
  font-weight: 650;
}
.status-pill {
  padding: 5px 9px;
  border-radius: 999px;
  background: #fff;
  border: 1px solid var(--line);
  color: var(--plum);
  font-size: 11px;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
.trajectory-panel {
  padding: 18px 16px;
}
.traj-row {
  position: relative;
  margin-top: 12px;
  display: grid;
  grid-template-columns: 34px 1fr;
  gap: 10px;
  align-items: center;
  min-height: 34px;
  padding: 8px 10px 8px 0;
  border-radius: 12px;
  background: rgba(255,255,255,0.58);
  border: 1px solid rgba(234,216,223,0.72);
  overflow: hidden;
}
.traj-row::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 3px;
  background: rgba(109,41,79,0.24);
}
.traj-row::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.78), transparent);
  transform: translateX(-120%);
  animation: trajWrite 7.2s ease-in-out infinite;
}
.traj-screen::after { animation-delay: 1.2s; }
.traj-diag::after { animation-delay: 2.4s; }
.traj-tx::after { animation-delay: 3.6s; }
.traj-input::before { background: rgba(109,41,79,0.32); }
.traj-screen::before { background: #e85d91; }
.traj-diag::before { background: #168a93; }
.traj-tx::before { background: #d98a16; }
.traj-row span {
  position: relative;
  z-index: 1;
  justify-self: center;
  font-family: 'JetBrains Mono', monospace;
  color: var(--plum);
  font-size: 11px;
  font-weight: 850;
}
.traj-row b {
  position: relative;
  z-index: 1;
  color: var(--ink-2);
  font-size: 12.5px;
}
.data-packet {
  position: absolute;
  z-index: 4;
  top: 47%;
  left: 13%;
  width: 13px;
  height: 13px;
  border-radius: 50%;
  background: #e85d91;
  box-shadow: 0 0 0 5px rgba(232,93,145,0.13), 0 0 24px rgba(232,93,145,0.55);
  animation: packetFlow 7.2s cubic-bezier(.55,.05,.35,.95) infinite;
}
.packet-b {
  top: 56%;
  background: #168a93;
  box-shadow: 0 0 0 5px rgba(22,138,147,0.13), 0 0 24px rgba(22,138,147,0.5);
  animation-delay: 1.35s;
}
.packet-c {
  top: 66%;
  background: #d98a16;
  box-shadow: 0 0 0 5px rgba(217,138,22,0.13), 0 0 24px rgba(217,138,22,0.5);
  animation-delay: 2.7s;
}
.packet-d {
  top: 38%;
  width: 9px;
  height: 9px;
  background: #6d294f;
  animation-delay: 4.05s;
}
.flow-caption {
  position: relative;
  z-index: 2;
  margin-top: 8px;
  text-align: center;
  font-size: 13px;
  color: var(--muted);
  line-height: 1.55;
}
.flow-caption b { color: var(--plum); font-weight: 700; }

/* ============================== AGENT FLOW ============================== */
.grad-text {
  background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent;
  font-weight: 800;
}
.workflow-badge {
  width: fit-content;
  margin: 18px auto 0;
  padding: 8px 18px;
  border-radius: 999px;
  background: #fff;
  border: 1px solid var(--line);
  box-shadow: var(--shadow-sm);
  background-image: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  font-size: clamp(22px, 3vw, 34px);
  font-weight: 800;
  line-height: 1.1;
  white-space: nowrap;
}
.agent-flow {
  display: grid; grid-template-columns: 1fr auto 1fr auto 1fr; gap: 16px;
  align-items: start !important; margin-top: 20px;
}
@media (max-width: 980px) {
  .agent-flow { grid-template-columns: 1fr; }
  .agent-arrow { transform: rotate(90deg); justify-self: center; }
}
.agent-node {
  background: white; border-radius: var(--radius-lg);
  padding: 18px 20px 20px; border: 1px solid var(--line); box-shadow: var(--shadow-sm);
  display: flex !important; flex-direction: column !important; justify-content: flex-start !important; gap: 10px;
  height: auto !important; min-height: 0 !important; max-height: none !important;
  transition: all .25s; position: relative; overflow: hidden;
}
.agent-node::before {
  content: ""; position: absolute; left: 0; top: 0; bottom: 0; width: 4px;
  background: var(--grad);
}
.agent-node.a-screen::before { background: linear-gradient(180deg, #fb7185, #f472b6); }
.agent-node.a-diag::before   { background: linear-gradient(180deg, #168a93, #6154b8); }
.agent-node.a-tx::before     { background: linear-gradient(180deg, #d98a16, #b91c5c); }
.agent-node:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.agent-head {
  display: flex !important;
  align-items: center !important;
  justify-content: flex-start !important;
  gap: 12px;
  margin: 0 !important;
  padding: 0 !important;
}
.agent-emoji {
  font-size: 24px; width: 44px; height: 44px; border-radius: 12px;
  background: var(--bg-soft); display: flex; align-items: center; justify-content: center;
}
.agent-name {
  font-size: 17px; font-weight: 700; color: var(--ink); line-height: 1.2;
}
.agent-phase {
  margin-top: 2px; font-size: 12px; font-weight: 600; letter-spacing: 0.05em;
  color: var(--plum); text-transform: uppercase;
}
.agent-skills { margin: 2px 0 0 !important; padding-left: 0; list-style: none; }
.agent-skills li {
  font-size: 13.5px; color: var(--ink-2); line-height: 1.5; padding: 6px 0;
  border-top: 1px dashed var(--line);
}
.agent-skills li:first-child { border-top: none; padding-top: 0; }
.agent-skills b { color: var(--plum); font-weight: 600; }
.agent-arrow {
  align-self: center; font-size: 28px; font-weight: 300; color: var(--pink);
  user-select: none;
}

.orch-card {
  margin-top: 30px;
  display: flex; align-items: center; gap: 24px;
  background:
    linear-gradient(135deg, rgba(255,255,255,0.08), transparent 36%),
    linear-gradient(135deg, #17111b 0%, #341a2b 54%, #173f44 100%);
  color: white;
  border-radius: var(--radius-lg); padding: 28px 32px;
  box-shadow: var(--shadow);
}
.orch-icon {
  font-size: 36px; width: 64px; height: 64px; border-radius: 16px;
  background: rgba(255, 255, 255, 0.08); display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}
.orch-body h3 { font-size: 18px; margin-bottom: 6px; color: white; }
.orch-body p { color: rgba(255, 228, 236, 0.85); font-size: 14.5px; margin: 0; line-height: 1.65; }
.orch-body p b { color: #ffadc6; }
@media (max-width: 720px) { .orch-card { flex-direction: column; text-align: center; } }

/* ============================== ABSTRACT ============================== */
.abstract-card {
  background: white; border-radius: var(--radius-lg);
  padding: 38px 42px; box-shadow: var(--shadow);
  border: 1px solid var(--line);
  font-size: 16px; line-height: 1.8;
  position: relative; overflow: hidden;
}
.abstract-card::before {
  content: ""; position: absolute; top: 0; left: 0; right: 0; height: 4px;
  background: var(--grad);
}
.abstract-card p:last-child { margin-bottom: 0; }
.abstract-card b { color: var(--plum); font-weight: 700; }

.contrib-grid {
  margin-top: 32px;
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px;
}
@media (max-width: 900px) { .contrib-grid { grid-template-columns: 1fr; } }
.contrib {
  background: white; border-radius: var(--radius); padding: 26px;
  border: 1px solid var(--line); box-shadow: var(--shadow-sm);
  transition: all .25s;
}
.contrib:hover { transform: translateY(-4px); box-shadow: var(--shadow); border-color: var(--pink-2); }
.contrib-num {
  width: 36px; height: 36px; border-radius: 10px;
  background: var(--grad); color: white;
  font-weight: 800; display: flex; align-items: center; justify-content: center;
  font-size: 16px; margin-bottom: 16px;
}
.contrib h3 { font-size: 18px; margin-bottom: 8px; color: var(--ink); }
.contrib p { font-size: 14.5px; margin-bottom: 0; }

/* ============================== FIGURES ============================== */
.figure-wide, .figure-narrow {
  margin: 0 auto; background: white; border-radius: var(--radius-lg);
  padding: 18px; box-shadow: var(--shadow); border: 1px solid var(--line);
}
.figure-wide { max-width: 1100px; }
.figure-narrow { max-width: 720px; }

.ablation-row {
  display: grid; grid-template-columns: 1fr 3fr; gap: 22px;
  align-items: stretch;
}
@media (max-width: 900px) { .ablation-row { grid-template-columns: 1fr; } }
.ablation-fig {
  margin: 0; background: white; border-radius: var(--radius-lg);
  padding: 22px; box-shadow: var(--shadow); border: 1px solid var(--line);
  display: flex; flex-direction: column;
}
.ablation-fig img {
  width: 100%; height: auto; display: block; border-radius: 12px;
  object-fit: contain;
}
.ablation-fig figcaption {
  margin-top: 14px; font-size: 13px; color: var(--muted);
  padding: 0 4px; line-height: 1.6;
}
.ablation-fig figcaption b { color: var(--plum); font-weight: 600; }
.figure-wide img, .figure-narrow img {
  width: 100%; height: auto; display: block; border-radius: 8px;
}
.figure-wide figcaption, .figure-narrow figcaption {
  margin-top: 14px; font-size: 13.5px; color: var(--muted);
  padding: 0 8px 4px; line-height: 1.6;
}

.dataset-figures {
  display: grid;
  grid-template-columns: 1.08fr 0.92fr;
  gap: 20px;
  align-items: stretch;
}
.dataset-figures .figure-wide {
  max-width: none;
  display: flex;
  flex-direction: column;
}
.dataset-figures .figure-wide img {
  height: 300px;
  object-fit: contain;
  background: #fff;
}

/* ============================== MODALITY ROW ============================== */
.modality-row {
  margin-top: 36px;
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px;
}
@media (max-width: 800px) { .modality-row { grid-template-columns: 1fr; } }
.modality {
  background: white; padding: 28px; border-radius: var(--radius);
  border: 1px solid var(--line); box-shadow: var(--shadow-sm);
  text-align: center; transition: all .25s;
}
.modality:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.modality-icon { font-size: 40px; }
.modality-name {
  margin-top: 10px; font-size: 18px; font-weight: 700;
  background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent;
}
.modality-desc { margin-top: 8px; font-size: 14px; color: var(--ink-2); line-height: 1.55; }
.data-flow-figure { margin-top: 0; }
@media (max-width: 980px) {
  .dataset-figures { grid-template-columns: 1fr; }
  .dataset-figures .figure-wide img { height: auto; }
}

/* ============================== METHOD GRID ============================== */
.method-grid {
  margin-top: 40px;
  display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px;
}
@media (max-width: 800px) { .method-grid { grid-template-columns: 1fr; } }
.method-card {
  background: white; border-radius: var(--radius); padding: 28px 30px;
  border: 1px solid var(--line); box-shadow: var(--shadow-sm);
  transition: all .25s;
}
.method-card:hover { transform: translateY(-3px); box-shadow: var(--shadow); border-color: var(--pink-2); }
.method-card h3 {
  font-size: 17px; color: var(--ink); margin-bottom: 10px;
  display: flex; align-items: center; gap: 10px;
}
.method-card p { font-size: 14.5px; margin-bottom: 0; }
.dot { width: 10px; height: 10px; border-radius: 50%; flex-shrink: 0; }
.dot-pink { background: var(--pink); }
.dot-rose { background: var(--rose); }
.dot-purple { background: var(--purple); }
.dot-amber { background: var(--amber); }

/* ============================== RESULTS ============================== */
.result-headline {
  display: grid; grid-template-columns: 1fr 1fr; gap: 22px; margin-bottom: 40px;
}
@media (max-width: 900px) { .result-headline { grid-template-columns: 1fr; } }
.rh-card {
  background: white; border-radius: var(--radius); padding: 26px 28px;
  border: 1px solid var(--line); box-shadow: var(--shadow-sm);
}
.rh-label { font-size: 13px; font-weight: 700; letter-spacing: 0.06em; text-transform: uppercase; color: var(--plum); margin-bottom: 16px; }
.rh-row { display: grid; grid-template-columns: 130px 1fr 50px; align-items: center; gap: 12px; margin-bottom: 10px; }
.rh-name { font-size: 13px; color: var(--ink-2); font-weight: 500; }
.rh-track { background: var(--bg-soft); height: 10px; border-radius: 999px; overflow: hidden; }
.rh-fill { height: 100%; background: linear-gradient(90deg, #c0c0c0, #a8a8a8); border-radius: 999px; transition: width 1s ease; }
.rh-ours { background: var(--grad); }
.rh-ours2 { background: linear-gradient(90deg, #f472b6, #c026d3); }
.rh-val { font-family: 'JetBrains Mono', monospace; font-size: 13px; color: var(--ink); font-weight: 600; text-align: right; }

/* ============================== TABLE ============================== */
.table-wrap {
  background: white; border-radius: var(--radius); padding: 18px;
  border: 1px solid var(--line); box-shadow: var(--shadow-sm);
  overflow-x: auto;
}
.result-table {
  width: 100%; border-collapse: collapse; font-size: 13px;
  font-family: 'Inter', sans-serif;
}
.result-table th, .result-table td {
  padding: 10px 12px; text-align: center; border-bottom: 1px solid var(--line);
}
.result-table th {
  font-weight: 700; color: var(--plum); background: var(--bg-soft);
  font-size: 12px; letter-spacing: 0.01em;
}
.result-table thead tr:first-child th { border-top-left-radius: 8px; border-top-right-radius: 8px; }
.result-table tr.group td {
  background: #faf4f6; font-style: italic; font-weight: 600; color: var(--plum);
  font-size: 12px; text-align: left; padding-left: 18px;
}
.result-table tr.ours {
  background: linear-gradient(90deg, #fdf2f8 0%, #fce7f3 100%);
}
.result-table tr.ours td { color: var(--ink); font-weight: 600; }
.result-table tbody tr:hover:not(.group):not(.ours) { background: #fdfafb; }
.result-table td:first-child { text-align: left; }
.table-note {
  margin-top: 14px; font-size: 12.5px; color: var(--muted); font-style: italic; text-align: center;
}

/* ============================== GALLERY ============================== */
.gallery {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px;
}
@media (max-width: 900px) { .gallery { grid-template-columns: 1fr; } }
.gal-card {
  display: block; background: white; border-radius: var(--radius);
  padding: 0 0 26px; border: 1px solid var(--line); box-shadow: var(--shadow-sm);
  color: var(--ink) !important; transition: all .25s; position: relative; overflow: hidden;
}
.gal-card::before {
  content: ""; position: absolute; top: 0; left: 0; right: 0; height: 3px;
  background: var(--grad); transform: scaleX(0); transform-origin: left; transition: transform .3s;
}
.gal-card:hover { transform: translateY(-5px); box-shadow: var(--shadow); }
.gal-card:hover::before { transform: scaleX(1); }
.gal-media {
  height: 168px;
  overflow: hidden;
  background: #fff8fa;
  border-bottom: 1px solid var(--line);
}
.gal-media img,
.gal-media video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform .35s ease;
}
.gal-card:hover .gal-media img,
.gal-card:hover .gal-media video { transform: scale(1.04); }
.gal-tag {
  display: inline-block; padding: 4px 12px; border-radius: 999px;
  font-size: 11px; font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase;
  margin: 22px 26px 14px;
}
.tag-screen { background: #fff1f4; color: #be185d; }
.tag-diag { background: #f3e8ff; color: #7e22ce; }
.tag-tx { background: #fff7ed; color: #c2410c; }
.gal-card h4 { font-size: 17px; margin: 0 26px 8px; }
.gal-card p { font-size: 14px; color: var(--ink-2); margin: 0 26px; }

/* ============================== BIBTEX ============================== */
.bibtex {
  background: #17111b; color: #ffe4ec;
  border-radius: var(--radius); padding: 28px 32px;
  font-family: 'JetBrains Mono', monospace; font-size: 13.5px; line-height: 1.7;
  overflow-x: auto;
  box-shadow: var(--shadow);
}
.bibtex code { color: #ffe4ec; }

/* ============================== FOOTER ============================== */
.footer {
  background: #17111b; color: #e8d6dd; margin-top: 80px;
  padding: 50px 28px 24px;
}
.footer-inner {
  max-width: 1200px; margin: 0 auto;
  display: flex; justify-content: space-between; gap: 30px; flex-wrap: wrap;
  padding-bottom: 30px; border-bottom: 1px solid rgba(255, 228, 236, 0.12);
}
.footer-left { max-width: 420px; }
.footer-left .brand-name { font-size: 20px; }
.footer-left .muted { color: #a89099; margin-top: 14px; font-size: 14px; }
.footer-right { display: flex; gap: 24px; align-items: center; flex-wrap: wrap; }
.footer-right a { color: #e8d6dd; font-size: 14px; font-weight: 500; }
.footer-right a:hover { color: var(--pink-2); }
.footer-bottom {
  max-width: 1200px; margin: 20px auto 0;
  display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap;
  font-size: 12.5px; color: #a89099;
}
.muted { color: var(--muted); }

/* ============================== REVEAL ANIMS ============================== */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity .7s ease, transform .7s ease; }
.reveal.in { opacity: 1; transform: translateY(0); }

/* small refinements */
::selection { background: var(--pink); color: white; }

@media (max-width: 900px) {
  .hero-pipeline {
    grid-template-columns: 1fr;
    border-radius: var(--radius-lg);
    padding: 12px;
    gap: 8px;
  }
  .hero-pipeline i {
    width: 2px;
    height: 22px;
    margin: 0 auto;
    background: linear-gradient(180deg, rgba(185, 28, 92, 0.18), rgba(185, 28, 92, 0.72));
  }
  .hero-pipeline i::after {
    right: auto;
    left: 50%;
    top: auto;
    bottom: -2px;
    transform: translateX(-50%) rotate(135deg);
  }
  .agent-console {
    min-height: auto;
    padding: 16px;
  }
  .console-topline {
    border-radius: 14px;
    align-items: flex-start;
    flex-direction: column;
    letter-spacing: 0.04em;
  }
  .agent-stage {
    grid-template-columns: 1fr;
    gap: 16px;
    padding: 22px 0 12px;
  }
  .agent-stage::before,
  .agent-stage::after {
    left: 50%;
    right: auto;
    top: 115px;
    bottom: 120px;
    width: 2px;
    height: auto;
    background: linear-gradient(180deg, rgba(185,28,92,0), rgba(185,28,92,0.45), rgba(22,138,147,0.42), rgba(217,138,22,0));
  }
  .router-core {
    width: 128px;
    height: 128px;
  }
  .core-sub {
    top: 74px;
  }
  .agent-lane {
    gap: 12px;
  }
  .data-packet {
    left: 50%;
    top: 106px;
    animation-name: packetFlowMobile;
  }
  .packet-b { top: 106px; }
  .packet-c { top: 106px; }
  .packet-d { top: 106px; }
}

@media (max-width: 640px) {
  .hero { padding: 64px 18px 52px; }
  .hero-title .grad { font-size: clamp(48px, 18vw, 72px); }
  .hero-sub br { display: none; }
  .section { padding: 72px 18px; }
  section.section-alt > * { padding-left: 18px; padding-right: 18px; }
  .stats {
    margin: -28px 18px 0;
    padding: 12px;
    grid-template-columns: 1fr;
  }
  .abstract-card,
  .orch-card {
    padding: 26px 22px;
  }
  .flow-anim { padding: 0; }
  .stage-card {
    grid-template-columns: 38px 1fr;
  }
  .case-evidence {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .case-evidence .evidence-tile,
  .case-evidence .evidence-tile:nth-child(4),
  .case-evidence .evidence-tile:nth-child(5) {
    grid-column: auto;
  }
  .stage-card .status-pill {
    grid-column: 2;
    justify-self: start;
  }
  .rh-row {
    grid-template-columns: 96px 1fr 44px;
    gap: 8px;
  }
  .rh-name,
  .rh-val { font-size: 11.5px; }
  .table-wrap { padding: 10px; }
}

@keyframes packetFlowMobile {
  0% { top: 104px; opacity: 0; transform: translateX(-50%) scale(.6); }
  10% { opacity: 1; transform: translateX(-50%) scale(1); }
  36% { top: 248px; }
  62% { top: 475px; }
  86% { top: 688px; opacity: 1; }
  100% { top: 735px; opacity: 0; transform: translateX(-50%) scale(.6); }
}

/* ===================================================================
   PIPELINE v2 · single 8-second narrative loop
   Patient → A1 (筛) → gate → A2 (诊) → gate → A3 (治) → τ
   =================================================================== */

/* --- Orchestrator status chip in topline --- */
.orch-chip {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 4px 6px 4px 12px; border-radius: 999px;
  background: rgba(255,255,255,0.82); border: 1px solid rgba(234,216,223,0.86);
  font-size: 11px; font-weight: 700; letter-spacing: 0.06em; text-transform: uppercase;
  color: var(--plum); min-height: 26px;
}
.orch-prefix { font-weight: 800; color: var(--plum); flex-shrink: 0; }

/* Step slot: reserve a fixed-size area; all steps stack absolutely inside */
.orch-chip {
  position: relative;
}
.orch-chip::after {
  /* invisible spacer so the chip reserves room for the widest step label */
  content: "Step 1 · invoke A2";
  visibility: hidden;
  padding: 4px 12px;
  font-weight: 700;
  white-space: nowrap;
}
.orch-step {
  position: absolute;
  right: 6px; top: 50%; transform: translateY(-50%);
  padding: 4px 12px; border-radius: 999px;
  font-weight: 700; white-space: nowrap;
  opacity: 0;
  animation: orchStep 8s linear infinite;
}
/* Step visibility windows synced with pipeline + tau:
   os-0 (intake)  : 0.0–1.5s   → drives pv-patient / ts-0
   os-1 (A1·筛)   : 1.5–3.0s   → drives pv-a1 / ts-1
   os-2 (A2·诊)   : 3.5–5.0s   → drives pv-a2 / ts-2
   os-3 (A3·治)   : 5.5–7.0s   → drives pv-a3 / ts-3
   os-done        : 7.0–8.0s   → recap                                */
.os-0 {
  animation-delay: 0s;
  background: linear-gradient(135deg, #f1f5f9, #e2e8f0);
  color: #475569;
}
.os-1 {
  animation-delay: 1.5s;
  background: linear-gradient(135deg, #fff1f4, #fbcfe8);
  color: #be185d;
}
.os-2 {
  animation-delay: 3.5s;
  background: linear-gradient(135deg, #f3e8ff, #e9d5ff);
  color: #7e22ce;
}
.os-3 {
  animation-delay: 5.5s;
  background: linear-gradient(135deg, #fff7ed, #fde2c0);
  color: #c2410c;
}
.os-done {
  animation-delay: 7s;
  background: linear-gradient(135deg, #ecfccb, #d9f99d);
  color: #3f6212;
}
/* Each step is visible for ~12% of the 8s cycle, then snaps off.
   Tight 0/1 transitions (0.1%) give hard cuts without alpha overlap. */
@keyframes orchStep {
  0%      { opacity: 0; }
  0.1%    { opacity: 1; }
  12%     { opacity: 1; }
  12.1%   { opacity: 0; }
  100%    { opacity: 0; }
}

/* --- Pipeline grid --- */
.pipeline-v2 {
  position: relative; z-index: 2;
  margin-top: 22px;
  display: grid;
  grid-template-columns: 1.05fr 24px 1.2fr 0.85fr 1.2fr 0.85fr 1.2fr;
  align-items: stretch;
  gap: 10px;
}
.pv-arrow {
  align-self: center; text-align: center;
  font-size: 22px; color: var(--pink); font-weight: 400;
  animation: arrowPulse 1.6s ease-in-out infinite;
}
@keyframes arrowPulse {
  0%, 100% { opacity: 0.45; transform: translateX(0); }
  50%      { opacity: 1;    transform: translateX(3px); }
}

/* --- Generic node card --- */
.pv-node {
  background: white; border-radius: 16px;
  padding: 16px 16px 14px; border: 1px solid var(--line);
  box-shadow: var(--shadow-sm);
  display: flex; flex-direction: column; gap: 6px;
  position: relative; overflow: hidden;
  transition: all 0.3s ease;
  opacity: 0.55; filter: saturate(0.7);
}
.pv-node::before {
  content: ""; position: absolute; left: 0; top: 0; bottom: 0; width: 3px;
  background: var(--grad); opacity: 0.45;
}
.pv-patient::before { background: linear-gradient(180deg, #94a3b8, #cbd5e1); }
.pv-a1::before { background: linear-gradient(180deg, #fb7185, #f472b6); }
.pv-a2::before { background: linear-gradient(180deg, #c026d3, #8b5cf6); }
.pv-a3::before { background: linear-gradient(180deg, #f59e0b, #ec4899); }

.pv-icon { font-size: 24px; }
.pv-head { display: flex; align-items: center; gap: 10px; }
.pv-head > div:last-child { display: flex; flex-direction: column; gap: 2px; min-width: 0; }
.pv-avatar {
  flex-shrink: 0;
  width: 40px; height: 40px; border-radius: 50%;
  overflow: hidden; background: var(--bg-soft);
  border: 2px solid white; box-shadow: var(--shadow-sm);
  display: flex; align-items: center; justify-content: center;
}
.pv-avatar img { width: 100%; height: 100%; object-fit: cover; display: block; }
.pv-title { font-size: 14px; font-weight: 700; color: var(--ink); line-height: 1.2; }
.pv-sub  { font-size: 11.5px; color: var(--muted); }

/* Patient evidence strip — 3 on top row, 2 centered on bottom */
.pv-evidence {
  margin-top: 6px;
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 6px;
}
.pv-evidence .ev-tile:nth-child(1) { grid-column: 1 / span 2; }
.pv-evidence .ev-tile:nth-child(2) { grid-column: 3 / span 2; }
.pv-evidence .ev-tile:nth-child(3) { grid-column: 5 / span 2; }
.pv-evidence .ev-tile:nth-child(4) { grid-column: 2 / span 2; }
.pv-evidence .ev-tile:nth-child(5) { grid-column: 4 / span 2; }

/* Agent-card mini evidence (single row) */
.pv-mini-evidence {
  margin-top: 6px;
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 4px;
}
.pv-mini-2col { grid-template-columns: repeat(2, 1fr); }
.pv-mini-evidence .ev-tile {
  aspect-ratio: 1 / 1;
}
.pv-mini-evidence .ev-tile figcaption {
  font-size: 9px;
  padding: 1px 0 2px;
}
.ev-tile {
  margin: 0; position: relative;
  border-radius: 8px; overflow: hidden;
  aspect-ratio: 1 / 1;
  background: var(--bg-soft);
  border: 1px solid var(--line);
  box-shadow: var(--shadow-sm);
  animation: evTileFlash 8s ease-in-out infinite;
}
.ev-tile img, .ev-tile video {
  width: 100%; height: 100%; object-fit: cover; display: block;
}
.ev-tile figcaption {
  position: absolute; left: 0; right: 0; bottom: 0;
  background: linear-gradient(180deg, rgba(28,16,36,0) 0%, rgba(28,16,36,0.82) 100%);
  color: white; font-size: 10px; font-weight: 700;
  letter-spacing: 0.04em; text-align: center;
  padding: 2px 0 3px;
}
.ev-tile:nth-child(1) { animation-delay: 0s; }
.ev-tile:nth-child(2) { animation-delay: 0.15s; }
.ev-tile:nth-child(3) { animation-delay: 0.30s; }
.ev-tile:nth-child(4) { animation-delay: 0.45s; }
.ev-tile:nth-child(5) { animation-delay: 0.60s; }
@keyframes evTileFlash {
  0%, 100% { transform: translateY(0); box-shadow: var(--shadow-sm); border-color: var(--line); }
  3%       { transform: translateY(-3px); box-shadow: 0 8px 20px rgba(232,93,145,0.22); border-color: rgba(232,93,145,0.5); }
  12%      { transform: translateY(-3px); box-shadow: 0 8px 20px rgba(232,93,145,0.22); border-color: rgba(232,93,145,0.5); }
  18%      { transform: translateY(0); box-shadow: var(--shadow-sm); border-color: var(--line); }
}
.pv-tag {
  display: inline-block; padding: 2px 10px; border-radius: 999px;
  font-size: 10.5px; font-weight: 800; letter-spacing: 0.08em; text-transform: uppercase;
  width: max-content;
}
.tag-screen { background: #fff1f4; color: #be185d; }
.tag-diag   { background: #f3e8ff; color: #7e22ce; }
.tag-tx     { background: #fff7ed; color: #c2410c; }

.pv-out {
  font-size: 11.5px; color: var(--ink-2); font-weight: 500;
  margin-top: 2px;
}

.pv-mods {
  margin-top: 6px;
  display: flex; flex-wrap: wrap; gap: 4px;
}
.pv-mods span, .pv-mod {
  font-size: 10px; font-weight: 700;
  padding: 2px 7px; border-radius: 999px;
  background: var(--bg-soft); color: var(--plum);
  letter-spacing: 0.03em;
}

/* --- Active-state highlighting (the "spotlight" follows the loop) --- */
.pv-node.pv-patient { animation: nodeLight 8s ease-in-out infinite; animation-delay: 0s; }
.pv-node.pv-a1      { animation: nodeLight 8s ease-in-out infinite; animation-delay: 1.5s; }
.pv-node.pv-a2      { animation: nodeLight 8s ease-in-out infinite; animation-delay: 3.5s; }
.pv-node.pv-a3      { animation: nodeLight 8s ease-in-out infinite; animation-delay: 5.5s; }
@keyframes nodeLight {
  0%, 100% { opacity: 0.55; filter: saturate(0.7); transform: translateY(0); box-shadow: var(--shadow-sm); }
  4%       { opacity: 1; filter: saturate(1.08); transform: translateY(-3px); box-shadow: 0 16px 38px rgba(232,93,145,0.18); }
  16%      { opacity: 1; filter: saturate(1.08); transform: translateY(-3px); box-shadow: 0 16px 38px rgba(232,93,145,0.18); }
  22%      { opacity: 0.85; filter: saturate(0.9); transform: translateY(0); box-shadow: var(--shadow-sm); }
}

/* --- Gate cards --- */
.pv-gate {
  align-self: center;
  background: rgba(255, 255, 255, 0.92);
  border: 1px dashed rgba(192, 38, 211, 0.35);
  border-radius: 14px; padding: 10px 8px;
  text-align: center;
  opacity: 0.55;
  transition: all 0.3s ease;
}
.pv-gate-q {
  font-size: 11px; font-weight: 800; color: var(--plum);
  letter-spacing: 0.05em; text-transform: uppercase; margin-bottom: 6px;
}
.pv-branch {
  font-size: 10.5px; padding: 3px 6px; border-radius: 6px;
  margin-top: 3px; line-height: 1.3;
}
.pv-branch-yes {
  background: linear-gradient(90deg, #fce7f3, #fbcfe8);
  color: #831843; font-weight: 700;
}
.pv-branch-no  {
  background: linear-gradient(90deg, #f0fdf4, #dcfce7);
  color: #15803d; font-weight: 600;
  border: 1px solid rgba(34, 197, 94, 0.25);
}
.pv-g1 { animation: gateLight 8s ease-in-out infinite; animation-delay: 2.7s; }
.pv-g2 { animation: gateLight 8s ease-in-out infinite; animation-delay: 4.7s; }
@keyframes gateLight {
  0%, 100% { opacity: 0.55; transform: scale(1); border-color: rgba(192,38,211,0.18); }
  6%       { opacity: 1; transform: scale(1.04); border-color: rgba(192,38,211,0.7); }
  14%      { opacity: 1; transform: scale(1.04); border-color: rgba(192,38,211,0.7); }
  20%      { opacity: 0.8; transform: scale(1); border-color: rgba(192,38,211,0.3); }
}

/* --- Healthy alt branch (follow-up) --- */
.pv-alt-path {
  grid-column: 3 / 6;
  margin-top: -2px;
  padding: 6px 14px; border-radius: 10px;
  background: repeating-linear-gradient(45deg, #f0fdf4, #f0fdf4 6px, #dcfce7 6px, #dcfce7 12px);
  color: #15803d; font-size: 11.5px; font-weight: 600; font-style: italic;
  text-align: center; border: 1px dashed #86efac;
  opacity: 0.85;
}

/* --- τ trajectory rail --- */
.tau-rail {
  position: relative; z-index: 2;
  margin-top: 20px;
  background: linear-gradient(135deg, #1c1024 0%, #3b1a3a 100%);
  border-radius: 16px; padding: 16px 22px;
  display: flex; align-items: center; gap: 18px;
  box-shadow: var(--shadow);
}
.tau-glyph {
  font-family: 'JetBrains Mono', monospace;
  font-size: 32px; font-weight: 700; color: var(--pink-2);
  flex-shrink: 0;
}
.tau-track {
  flex: 1; display: grid;
  grid-template-columns: repeat(4, 1fr); gap: 14px;
  position: relative;
}
.tau-track::before {
  content: ""; position: absolute;
  left: 8px; right: 8px; top: 50%; height: 2px;
  background: linear-gradient(90deg,
    rgba(255,255,255,0.08) 0%,
    rgba(244, 114, 182, 0.65) 50%,
    rgba(255,255,255,0.08) 100%);
  z-index: 0;
}
.tau-step {
  position: relative; z-index: 1;
  padding: 6px 12px; border-radius: 10px;
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.06);
  font-size: 11.5px;
  display: flex; flex-direction: column; gap: 1px;
  opacity: 0.25;
  animation: tauReveal 8s ease-in-out infinite;
}
.tau-step b {
  color: white; font-weight: 700; font-size: 12.5px; letter-spacing: 0.01em;
}
.tau-step i {
  font-style: normal; color: rgba(255, 228, 236, 0.55); font-size: 10.5px;
}
.ts-0 { animation-delay: 0.5s; }
.ts-1 { animation-delay: 2.2s; }
.ts-2 { animation-delay: 4.2s; }
.ts-3 { animation-delay: 6.2s; }
@keyframes tauReveal {
  0%       { opacity: 0.18; background: rgba(255,255,255,0.03); border-color: rgba(255,255,255,0.05); }
  4%       { opacity: 1;    background: rgba(236, 72, 153, 0.18); border-color: rgba(244, 114, 182, 0.5); transform: translateY(-2px); }
  14%      { opacity: 1;    background: rgba(236, 72, 153, 0.10); border-color: rgba(244, 114, 182, 0.3); transform: translateY(0); }
  95%, 100% { opacity: 0.85; background: rgba(255,255,255,0.06); border-color: rgba(255,255,255,0.08); }
}

/* --- Responsive --- */
@media (max-width: 1000px) {
  .pipeline-v2 {
    grid-template-columns: 1fr;
    gap: 8px;
  }
  .pv-arrow { display: none; }
  .pv-alt-path { grid-column: auto; }
  .tau-track { grid-template-columns: 1fr; }
  .tau-track::before { display: none; }
}