/* v3 — The Dive. One page, one descent: surface → sunlit → twilight → midnight → abyss. */

:root {
  --ink: #0f1f1e;
  --muted: #3c5351;
  --faint: #5b706e;
  --line: rgba(15, 31, 30, 0.14);
  --accent: #1e4a46;
  --glass: rgba(246, 243, 236, 0.7);
  --glass-line: rgba(15, 31, 30, 0.1);
  --det: #12a58c;
  --det-ink: #f4fffc;
  --wrap: 64rem;
  --head-h: 3.6rem;
  --serif: "Fraunces", "Iowan Old Style", Palatino, "Songti SC", serif;
  --sans: "Outfit", "Avenir Next", "Segoe UI", sans-serif;
  --pixel: "Silkscreen", ui-monospace, "SFMono-Regular", Menlo, monospace;
  --shadow: 0 22px 48px rgba(16, 36, 34, 0.14);
}

[data-tone="dark"] {
  --ink: #e9f2ef;
  --muted: #a8c0bd;
  --faint: #7f9a98;
  --line: rgba(233, 242, 239, 0.13);
  --accent: #7fd8c8;
  --glass: rgba(9, 26, 38, 0.66);
  --glass-line: rgba(233, 242, 239, 0.12);
  --det: #6ff5df;
  --det-ink: #04131c;
  --shadow: 0 22px 48px rgba(0, 0, 0, 0.35);
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  overflow-x: clip;
}

body {
  position: relative;
  margin: 0;
  min-height: 100%;
  overflow-x: clip;
  color: var(--ink);
  background-color: #cfe5e0;
  background-image: linear-gradient(180deg, #f4f0e7 0%, #eef0ea 17%, #cfe5e0 17%, #94c1bd 30%, #1d5263 36%, #133a4f 55%, #0c2638 60%, #0a1d2d 72%, #081624 77%, #050b13 100%);
  font-family: var(--sans);
  font-size: 1.05rem;
  font-weight: 400;
  line-height: 1.65;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

.px {
  font-family: var(--pixel);
  font-weight: 400;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

a {
  color: var(--accent);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.18em;
}

a:hover { color: var(--ink); }

:focus { outline: none; }

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

::selection {
  background: rgba(111, 245, 223, 0.35);
  color: inherit;
}

button { font: inherit; color: inherit; }

/* ---------- canvases & cursor ---------- */

#ocean,
#trail {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

#ocean { z-index: 0; }
#trail { z-index: 40; }

/* The diver-mask cursor is a native cursor image (set from JS), so it moves with zero lag. */
html.sea-cursor,
html.sea-cursor * { cursor: var(--sea-cursor), auto !important; }

html.sea-cursor :is(a, button, label, summary, .critter-btn, .quip, .gauge-tick),
html.sea-cursor.sea-hot,
html.sea-cursor.sea-hot * { cursor: var(--sea-cursor-hot), pointer !important; }

html.sea-cursor :is(input, textarea, [contenteditable]) { cursor: text !important; }

html.sea-cursor body.dragging,
html.sea-cursor body.dragging * { cursor: grabbing !important; }

.skip {
  position: fixed;
  left: 1rem;
  top: -3rem;
  z-index: 60;
  padding: 0.4rem 0.7rem;
  background: #fffdf8;
  color: #0f1f1e;
}

.skip:focus { top: 0.6rem; }

/* ---------- header ---------- */

.top {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 30;
  height: var(--head-h);
  color: var(--ink);
  background: var(--glass);
  border-bottom: 1px solid var(--glass-line);
  backdrop-filter: blur(14px) saturate(1.2);
  -webkit-backdrop-filter: blur(14px) saturate(1.2);
  transition: background-color 0.5s ease, border-color 0.5s ease, color 0.5s ease;
}

.top-inner {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  height: 100%;
  width: min(calc(var(--wrap) + 6rem), calc(100% - 2.5rem));
  margin-inline: auto;
}

.brand {
  font-family: var(--serif);
  font-size: 1.12rem;
  font-weight: 500;
  letter-spacing: -0.02em;
  color: var(--ink);
  text-decoration: none;
  white-space: nowrap;
}

.nav {
  display: flex;
  gap: 1.4rem;
  margin-left: auto;
}

.nav a {
  position: relative;
  color: var(--muted);
  font-size: 0.93rem;
  text-decoration: none;
  transition: color 0.25s ease;
}

.nav a::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: -0.45rem;
  width: 4px;
  height: 4px;
  background: var(--det);
  transform: translateX(-50%) scale(0);
  transition: transform 0.25s ease;
}

.nav a:hover,
.nav a.is-here { color: var(--ink); }

.nav a.is-here::after { transform: translateX(-50%) scale(1); }

.top-side {
  display: flex;
  align-items: center;
  gap: 1.1rem;
}

.vision-toggle {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.32rem 0.6rem 0.32rem 0.5rem;
  border: 1px solid var(--line);
  background: transparent;
  color: var(--muted);
  font-size: 0.68rem;
  cursor: pointer;
  transition: color 0.2s ease, border-color 0.2s ease, background-color 0.2s ease;
}

.vision-toggle:hover { color: var(--ink); border-color: var(--det); }

.lang-link {
  display: inline-flex;
  align-items: center;
  padding: 0.32rem 0.6rem;
  border: 1px solid var(--line);
  background: transparent;
  color: var(--muted);
  font-size: 0.68rem;
  text-decoration: none;
  transition: color 0.2s ease, border-color 0.2s ease;
}

.lang-link:hover { color: var(--ink); border-color: var(--det); }

.vision-toggle .eye {
  width: 10px;
  height: 10px;
  border: 2px solid currentColor;
  box-shadow: inset 0 0 0 1.5px transparent;
  background: radial-gradient(currentColor 0 1.5px, transparent 2px);
}

.vision-toggle[aria-pressed="true"] {
  color: var(--det-ink);
  background: var(--det);
  border-color: var(--det);
}

.clock {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  min-width: 5.4em;
  line-height: 1.05;
  font-variant-numeric: tabular-nums;
}

.clock-time { font-size: 0.92rem; letter-spacing: 0.03em; }

.clock-zone {
  margin-top: 0.2rem;
  color: var(--faint);
  font-size: 0.56rem;
}

/* ---------- depth gauge ---------- */

.gauge {
  position: fixed;
  right: clamp(0.75rem, 1.6vw, 1.6rem);
  top: 50%;
  z-index: 25;
  display: flex;
  flex-direction: column;
  align-items: center;
  width: 4.4rem;
  transform: translateY(-50%);
  color: var(--ink);
  pointer-events: none;
}

.gauge-read {
  margin: 0;
  font-size: 0.95rem;
  line-height: 1;
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

.gauge-read small { margin-left: 0.15rem; font-size: 0.6rem; color: var(--muted); }

.gauge-zone {
  margin: 0.35rem 0 0.8rem;
  color: var(--muted);
  font-size: 0.52rem;
  white-space: nowrap;
}

.gauge-atm {
  margin: -0.45rem 0 0.8rem;
  color: var(--faint);
  font-size: 0.48rem;
  white-space: nowrap;
}

.gauge-rail {
  position: relative;
  width: 2px;
  height: min(42vh, 22rem);
  background: repeating-linear-gradient(180deg, var(--line) 0 2px, transparent 2px 6px);
  pointer-events: auto;
}

.gauge-tick {
  position: absolute;
  left: 50%;
  width: 14px;
  height: 2px;
  border: 0;
  padding: 0;
  background: var(--muted);
  transform: translateX(-50%);
  cursor: pointer;
}

.gauge-tick::after {
  content: attr(data-label);
  position: absolute;
  right: 20px;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--pixel);
  font-size: 0.5rem;
  letter-spacing: 0.04em;
  color: var(--faint);
  white-space: nowrap;
  opacity: 0;
  transition: opacity 0.2s ease;
}

.gauge:hover .gauge-tick::after,
.gauge-tick:focus-visible::after { opacity: 1; }

.gauge-sub {
  position: absolute;
  left: 50%;
  top: 0;
  width: 14px;
  height: 8px;
  margin: -4px 0 0 -7px;
  background:
    linear-gradient(var(--det), var(--det)) 2px 2px / 10px 4px no-repeat,
    linear-gradient(var(--det), var(--det)) 5px 0 / 4px 2px no-repeat,
    linear-gradient(var(--det), var(--det)) 12px 3px / 2px 2px no-repeat;
  filter: drop-shadow(0 0 4px var(--det));
}

/* ---------- layout ---------- */

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

.wrap {
  width: min(var(--wrap), calc(100% - 3rem));
  margin-inline: auto;
}

.zone {
  position: relative;
  color: var(--ink);
}

.stage {
  height: clamp(10rem, 22vw, 15rem);
}

.zone-grid {
  display: grid;
  grid-template-columns: minmax(10rem, 14rem) minmax(0, 1fr);
  gap: 1rem 3.5rem;
  align-items: start;
}

.zone-head {
  position: sticky;
  top: calc(var(--head-h) + 2rem);
}

.zone-no {
  margin: 0 0 0.6rem;
  color: var(--det);
  font-size: 0.72rem;
}

h2 {
  margin: 0;
  font-family: var(--serif);
  font-size: clamp(2.1rem, 3.6vw, 2.9rem);
  font-weight: 400;
  letter-spacing: -0.035em;
  line-height: 1.02;
}

.zone-meta .sep { display: none; }

.zone-meta {
  margin: 0.9rem 0 0;
  color: var(--faint);
  font-size: 0.58rem;
  line-height: 1.8;
}

.zone-body { padding-bottom: 7rem; }

.shelf { height: 2rem; }

p { text-wrap: pretty; }

.prose p {
  max-width: 38rem;
  margin: 0 0 1rem;
  font-size: 1.12rem;
  font-weight: 300;
  line-height: 1.7;
}

.prose p:first-child {
  font-family: var(--serif);
  font-size: clamp(1.35rem, 2.1vw, 1.6rem);
  font-weight: 400;
  line-height: 1.42;
  letter-spacing: -0.015em;
}

/* ---------- hero / surface ---------- */

.zone-surface {
  display: flex;
  flex-direction: column;
  min-height: max(100svh, 46rem);
  padding-top: calc(var(--head-h) + clamp(3.5rem, 9vh, 6.5rem));
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(15rem, 19rem);
  gap: 2rem 4rem;
  align-items: center;
}

.hello {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  margin: 0 0 1.4rem;
  font-family: var(--serif);
  font-style: italic;
  font-size: clamp(1.3rem, 2vw, 1.6rem);
  letter-spacing: -0.02em;
  line-height: 1;
  animation: rise-in 0.8s ease both;
}

.hello-zh {
  font-family: "Songti SC", "Noto Serif SC", "Source Han Serif SC", serif;
  font-style: normal;
  letter-spacing: 0.14em;
}

.day-mark {
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  margin: -4px;
  padding: 0;
  border: 0;
  background: transparent;
  cursor: pointer;
  transition: transform 0.3s ease;
}

.day-mark:hover { transform: rotate(-12deg) scale(1.08); }
.day-mark:active { transform: scale(0.9); }

#hello-mark {
  width: 32px;
  height: 32px;
  image-rendering: pixelated;
}

.kicker {
  margin: 0 0 1rem;
  color: var(--accent);
  font-size: 0.64rem;
  animation: rise-in 0.8s 0.08s ease both;
}

h1 {
  margin: 0;
  font-family: var(--serif);
  font-size: clamp(3.4rem, 9vw, 7rem);
  font-weight: 400;
  letter-spacing: -0.05em;
  line-height: 0.88;
  animation: rise-in 0.9s 0.14s ease both;
}

.topic {
  margin: 1.1rem 0 0;
  font-family: var(--serif);
  font-style: italic;
  font-size: clamp(1.45rem, 2.6vw, 2rem);
  letter-spacing: -0.025em;
  line-height: 1.15;
  animation: rise-in 0.9s 0.22s ease both;
}

.role {
  max-width: 28rem;
  margin: 0.6rem 0 0;
  color: var(--muted);
  font-weight: 300;
  animation: rise-in 0.9s 0.28s ease both;
}

.links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.2rem;
  margin: 1.8rem 0 0;
  padding: 0;
  list-style: none;
  animation: rise-in 0.9s 0.34s ease both;
}

.links a {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding-bottom: 0.1rem;
  color: var(--muted);
  font-size: 0.95rem;
  text-decoration: none;
  border-bottom: 1px solid var(--line);
  transition: color 0.2s ease, border-color 0.2s ease;
}

.links a:hover { color: var(--ink); border-color: var(--ink); }

.links svg { width: 15px; height: 15px; flex: none; }

.links svg * {
  stroke: currentColor;
  fill: none;
  stroke-width: 1.7;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.links svg .solid { fill: currentColor; stroke: none; }

@keyframes rise-in {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: none; }
}

.portrait-wrap {
  position: relative;
  aspect-ratio: 3 / 4;
  width: 100%;
  animation: rise-in 1s 0.2s ease both;
}

.arcade {
  position: absolute;
  left: -26px;
  top: -26px;
  width: calc(100% + 52px);
  height: calc(100% + 52px);
  z-index: 1;
  pointer-events: none;
}

.photo-bubbles {
  position: absolute;
  left: -36px;
  top: -240px;
  width: calc(100% + 72px);
  height: calc(100% + 260px);
  z-index: 3;
  pointer-events: none;
}

.portrait-frame {
  position: absolute;
  inset: 0;
  z-index: 2;
  display: block;
  padding: 0;
  border: 0;
  overflow: hidden;
  background: #dfe5e1;
  box-shadow: var(--shadow);
  cursor: pointer;
  transition: box-shadow 0.35s ease;
}

.portrait {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: 50% 20%;
  transition: transform 0.6s ease, filter 0.6s ease;
}

.portrait-frame:hover .portrait { transform: scale(1.03); }

/* ---- Cyberpunk-style scan (click the portrait) ---- */
.portrait-wrap.scanning {
  --det: #fcee0a;
  --det-ink: #1d1600;
}

.ghost,
.glitch {
  position: absolute;
  inset: 0;
  z-index: 1;
  opacity: 0;
  pointer-events: none;
  background: url("../assets/bio-photo.jpg") 50% 20% / cover no-repeat;
}

.ghost { mix-blend-mode: screen; }
.ghost-r { filter: sepia(1) saturate(9) hue-rotate(-45deg); }
.ghost-c { filter: sepia(1) saturate(9) hue-rotate(140deg); }
.glitch { z-index: 2; filter: saturate(1.6) hue-rotate(-12deg) brightness(1.1); }

.scanline {
  position: absolute;
  inset: 0;
  z-index: 3;
  opacity: 0;
  pointer-events: none;
  background:
    linear-gradient(180deg, transparent 0 44%, rgba(252, 238, 10, 0.25) 48%, rgba(252, 238, 10, 0.95) 49.5% 50.5%, transparent 53% 100%) 0 -100% / 100% 200% no-repeat,
    repeating-linear-gradient(180deg, rgba(0, 240, 255, 0.16) 0 1px, transparent 1px 3px);
}

/* neon tint: cyan → yellow → hot red, bright, never grey */
.portrait-frame::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  opacity: 0;
  pointer-events: none;
  background:
    radial-gradient(90% 60% at 85% 8%, rgba(255, 0, 60, 0.35), transparent 60%),
    linear-gradient(170deg, rgba(0, 240, 255, 0.7) 0%, rgba(0, 200, 255, 0.45) 45%, rgba(252, 238, 10, 0.55) 100%);
  mix-blend-mode: overlay;
  transition: opacity 0.3s steps(3);
}

/* lift the shadows into electric blue so nothing reads as black */
.portrait-frame::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  opacity: 0;
  pointer-events: none;
  background: linear-gradient(170deg, rgba(0, 150, 220, 0.3), rgba(120, 40, 160, 0.22));
  mix-blend-mode: screen;
  transition: opacity 0.3s steps(3);
}

.portrait-wrap.revealed .portrait-frame::before,
.portrait-wrap.revealed .portrait-frame::after { opacity: 1; }

.portrait-wrap.revealed .portrait {
  transform: none;
  filter: saturate(1.5) contrast(1.12) brightness(1.06);
}

.portrait-wrap.scanning .portrait-frame {
  box-shadow: 0 0 0 2px #fcee0a, 5px 5px 0 2px #ff003c, 0 0 34px rgba(0, 240, 255, 0.4);
}

.portrait-wrap.scanning .scanline {
  opacity: 1;
  animation: scan 1.4s steps(28) both;
}

.portrait-wrap.revealed .ghost-r { animation: split-r 1.6s steps(1) both; }
.portrait-wrap.revealed .ghost-c { animation: split-c 1.6s steps(1) both; }
.portrait-wrap.revealed .glitch { animation: slices 0.5s steps(1) both; }

/* ---- "Who's that Pokémon?" phase: rays, a glowing silhouette, the big question ---- */
.burst,
.sil,
.flash {
  position: absolute;
  pointer-events: none;
  opacity: 0;
}

.burst {
  inset: -40%;
  z-index: 2;
  background:
    radial-gradient(circle at 50% 50%, #fffbe2 0 9%, rgba(255, 251, 226, 0.6) 16%, transparent 34%),
    repeating-conic-gradient(from 0deg at 50% 50%, #ffcb05 0deg 9deg, #3d7dca 9deg 18deg);
}

.sil {
  inset: 0;
  z-index: 3;
  filter: drop-shadow(0 0 1.5px #fff) drop-shadow(0 0 1.5px #fff) drop-shadow(0 0 12px rgba(255, 255, 255, 0.75));
}

.sil span {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, #3157e0 0%, #2342b8 60%, #1f3aa6 100%);
  -webkit-mask: url("../assets/bio-mask.png") 50% 20% / cover no-repeat;
  mask: url("../assets/bio-mask.png") 50% 20% / cover no-repeat;
}

.flash {
  inset: 0;
  z-index: 4;
  background: #fffdf2;
}

.portrait-wrap.whos .burst { opacity: 1; animation: burst-spin 9s linear infinite; }
.portrait-wrap.whos .sil { opacity: 1; animation: sil-in 0.45s steps(5) both, sil-bob 1.2s 0.45s ease-in-out infinite; }
.portrait-wrap.revealed .flash { animation: flash-out 0.5s ease-out both; }

@keyframes burst-spin { to { transform: rotate(360deg); } }

@keyframes sil-in {
  from { opacity: 0; transform: scale(0.7) translateX(-30%); }
  to { opacity: 1; transform: none; }
}

@keyframes sil-bob {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-5px); }
}

@keyframes flash-out {
  from { opacity: 1; }
  to { opacity: 0; }
}

.who-text {
  position: absolute;
  left: 50%;
  top: 6%;
  z-index: 6;
  margin: 0;
  width: max-content;
  max-width: 120%;
  text-align: center;
  font-size: clamp(0.85rem, 1.9vw, 1.25rem);
  line-height: 1.15;
  color: #ffcb05;
  text-shadow:
    2px 0 0 #2a5bb8, -2px 0 0 #2a5bb8, 0 2px 0 #2a5bb8, 0 -2px 0 #2a5bb8,
    2px 2px 0 #2a5bb8, -2px 2px 0 #2a5bb8, 2px -2px 0 #2a5bb8, -2px -2px 0 #2a5bb8,
    4px 5px 0 #1b3a8a;
  transform: translateX(-50%);
  pointer-events: none;
}

.who-q,
.who-a { display: none; }

.portrait-wrap.whos .who-q { display: block; animation: who-in 0.4s steps(4) both, who-wobble 0.9s 0.4s steps(2) infinite; }
.portrait-wrap.revealed .who-a { display: block; animation: who-pop 0.5s steps(5) both, who-out 0.4s 2.4s steps(3) forwards; }

@keyframes who-in {
  from { opacity: 0; transform: scale(2) rotate(-6deg); }
  to { opacity: 1; transform: none; }
}

@keyframes who-wobble {
  0%, 100% { transform: rotate(-2deg); }
  50% { transform: rotate(2deg); }
}

@keyframes who-pop {
  0% { opacity: 0; transform: scale(0.3); }
  60% { opacity: 1; transform: scale(1.25); }
  100% { opacity: 1; transform: scale(1); }
}

@keyframes who-out { to { opacity: 0; transform: translateY(-8px); } }

.dex-no {
  margin-right: 0.25rem;
  color: #ff3b6b;
}

.dex-types {
  display: flex;
  gap: 0.3rem;
  margin: -0.15rem 0 0.5rem;
}

.type {
  padding: 0.1rem 0.4rem 0.08rem;
  border-radius: 2px;
  color: #fff;
  font-size: 0.48rem;
  letter-spacing: 0.08em;
  text-shadow: 1px 1px 0 rgba(0, 0, 0, 0.25);
}

.type.water { background: #3d7dca; box-shadow: inset 0 -2px 0 #2a5bb8; }
.type.vision { background: #00b8c8; box-shadow: inset 0 -2px 0 #00838f; }

@keyframes scan {
  from { background-position: 0 -100%, 0 0; }
  to { background-position: 0 200%, 0 0; }
}

@keyframes split-r {
  0% { opacity: 0.6; transform: translate(7px, 0); }
  10% { transform: translate(-5px, 1px); }
  20% { transform: translate(4px, -1px); }
  32% { opacity: 0.45; transform: translate(2px, 0); }
  70% { opacity: 0.3; transform: translate(1px, 0); }
  100% { opacity: 0; transform: none; }
}

@keyframes split-c {
  0% { opacity: 0.6; transform: translate(-7px, 0); }
  10% { transform: translate(5px, -1px); }
  20% { transform: translate(-4px, 1px); }
  32% { opacity: 0.45; transform: translate(-2px, 0); }
  70% { opacity: 0.3; transform: translate(-1px, 0); }
  100% { opacity: 0; transform: none; }
}

@keyframes slices {
  0% { opacity: 1; clip-path: inset(8% 0 80% 0); transform: translateX(-14px); }
  14% { clip-path: inset(44% 0 42% 0); transform: translateX(11px); }
  28% { clip-path: inset(70% 0 18% 0); transform: translateX(-9px); }
  42% { clip-path: inset(22% 0 66% 0); transform: translateX(15px); }
  56% { clip-path: inset(86% 0 5% 0); transform: translateX(-6px); }
  70% { clip-path: inset(56% 0 34% 0); transform: translateX(7px); }
  84% { opacity: 1; clip-path: inset(30% 0 64% 0); transform: translateX(-4px); }
  100% { opacity: 0; }
}

@keyframes slices-2 {
  0% { opacity: 1; clip-path: inset(60% 0 28% 0); transform: translateX(12px); }
  25% { clip-path: inset(18% 0 72% 0); transform: translateX(-10px); }
  50% { clip-path: inset(78% 0 10% 0); transform: translateX(8px); }
  75% { opacity: 1; clip-path: inset(40% 0 52% 0); transform: translateX(-6px); }
  100% { opacity: 0; }
}

.det-tag {
  position: absolute;
  left: -2px;
  top: -1.7rem;
  z-index: 6;
  padding: 0.2rem 0.4rem;
  background: var(--det);
  color: var(--det-ink);
  font-size: 0.56rem;
  white-space: nowrap;
  opacity: 0;
  transform: translateY(4px);
  transition: opacity 0.25s ease, transform 0.25s ease;
  pointer-events: none;
}

.det-tag b { font-weight: 400; opacity: 0.7; margin-left: 0.3rem; }

.det-known { display: none; }
.portrait-wrap.revealed .det-guess { display: none; }
.portrait-wrap.revealed .det-known { display: inline-block; animation: who-pop 0.45s steps(5) both; }

.det-tag .unsure { display: inline-block; animation: unsure 1.4s steps(2) infinite; }

@keyframes unsure {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.35; }
}

.portrait-wrap.scanning .det-tag { box-shadow: 3px 3px 0 #ff003c; }

.portrait-wrap::after {
  content: "";
  position: absolute;
  inset: -8px;
  z-index: 4;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.25s ease;
  background:
    linear-gradient(var(--det), var(--det)) 0 0 / 18px 2px no-repeat,
    linear-gradient(var(--det), var(--det)) 0 0 / 2px 18px no-repeat,
    linear-gradient(var(--det), var(--det)) 100% 0 / 18px 2px no-repeat,
    linear-gradient(var(--det), var(--det)) 100% 0 / 2px 18px no-repeat,
    linear-gradient(var(--det), var(--det)) 0 100% / 18px 2px no-repeat,
    linear-gradient(var(--det), var(--det)) 0 100% / 2px 18px no-repeat,
    linear-gradient(var(--det), var(--det)) 100% 100% / 18px 2px no-repeat,
    linear-gradient(var(--det), var(--det)) 100% 100% / 2px 18px no-repeat;
}

.portrait-wrap.scanning::after,
.portrait-wrap.scanning .det-tag,
body.vision .portrait-wrap::after,
body.vision .portrait-wrap .det-tag {
  opacity: 1;
  transform: none;
}

/* the scanner readout */
.scan-card {
  position: absolute;
  left: -1.6rem;
  right: 1rem;
  bottom: 1rem;
  z-index: 5;
  color: #e8fbff;
  font-size: 0.74rem;
  line-height: 1.35;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.portrait-wrap.scanning .scan-card { opacity: 1; visibility: visible; }

.scan-progress,
.scan-result {
  padding: 0.55rem 0.75rem 0.6rem 0.9rem;
  background: rgba(6, 38, 60, 0.9);
  box-shadow: inset 3px 0 0 #fcee0a, inset 0 0 0 1px rgba(0, 240, 255, 0.55);
  clip-path: polygon(0 0, calc(100% - 14px) 0, 100% 14px, 100% 100%, 0 100%);
  backdrop-filter: blur(3px);
  -webkit-backdrop-filter: blur(3px);
}

.scan-progress { animation: card-in 0.25s steps(3) both; }

.scan-progress p {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  margin: 0 0 0.4rem;
  color: #fcee0a;
  font-size: 0.55rem;
}

.scan-bar {
  height: 6px;
  background: rgba(0, 240, 255, 0.16);
}

.scan-bar i {
  display: block;
  width: 0;
  height: 100%;
  background: repeating-linear-gradient(90deg, #fcee0a 0 6px, transparent 6px 8px);
}

.scan-result { display: none; }
.portrait-wrap.scanned .scan-progress { display: none; }
.portrait-wrap.scanned .scan-result { display: block; animation: card-in 0.28s steps(4) both; }

.scan-title {
  margin: 0 0 0.45rem;
  color: #fcee0a;
  font-size: 0.7rem;
  text-shadow: 2px 0 0 rgba(255, 0, 60, 0.6);
}

.scan-title small {
  margin-left: 0.3rem;
  color: #e8fbff;
  font-family: "Songti SC", "Noto Serif SC", serif;
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-shadow: none;
}

.scan-result dl {
  display: grid;
  gap: 0.15rem;
  margin: 0;
}

.scan-result dl div {
  display: grid;
  grid-template-columns: 4.4rem minmax(0, 1fr);
  align-items: baseline;
  animation: card-in 0.2s steps(2) both;
  animation-delay: calc(var(--i) * 80ms + 0.15s);
}

.scan-result dt {
  color: #00f0ff;
  font-family: var(--pixel);
  font-size: 0.48rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.scan-result dd { margin: 0; }

.scan-result dd em {
  margin-left: 0.2rem;
  color: #ff3b6b;
  font-family: var(--pixel);
  font-size: 0.55rem;
  font-style: normal;
}

.scan-result dd.ok { color: #7dffb2; }

@keyframes card-in {
  from { opacity: 0; transform: translateX(-10px); }
  to { opacity: 1; transform: none; }
}

.lining {
  position: relative;
  margin: clamp(2.5rem, 6vh, 4rem) 0 0;
  min-height: 5.6rem;
}

.lining .rainbow {
  position: absolute;
  left: -1.4rem;
  top: -0.6rem;
  width: min(46rem, calc(100% + 1.4rem));
  height: 5.6rem;
  pointer-events: none;
  image-rendering: pixelated;
}

.lining span {
  position: relative;
  display: block;
  padding-top: 1.15rem;
  font-family: "Cormorant Garamond", var(--serif);
  font-style: italic;
  font-weight: 500;
  font-size: clamp(2.1rem, 5vw, 3.4rem);
  line-height: 0.95;
}

.surface-band {
  position: relative;
  flex: 1 0 9.5rem;
  display: flex;
  align-items: flex-end;
  justify-content: center;
}

.dive {
  position: relative;
  top: 4.6rem;
  z-index: 2;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 0.8rem;
  color: var(--muted);
  font-size: 0.66rem;
  text-decoration: none;
  animation: bob 2.4s ease-in-out infinite;
}

.dive:hover { color: var(--ink); }

@keyframes bob {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(5px); }
}

/* ---------- publications ---------- */

.pub {
  position: relative;
  padding: 1.5rem 0 1.4rem;
  border-top: 1px solid var(--line);
}

.pub:first-child { border-top: 0; padding-top: 0.2rem; }

.pub::before,
.news li::before {
  content: "";
  position: absolute;
  inset: 0.6rem -1rem;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.2s ease, inset 0.25s ease;
  background:
    linear-gradient(var(--det), var(--det)) 0 0 / 12px 2px no-repeat,
    linear-gradient(var(--det), var(--det)) 0 0 / 2px 12px no-repeat,
    linear-gradient(var(--det), var(--det)) 100% 0 / 12px 2px no-repeat,
    linear-gradient(var(--det), var(--det)) 100% 0 / 2px 12px no-repeat,
    linear-gradient(var(--det), var(--det)) 0 100% / 12px 2px no-repeat,
    linear-gradient(var(--det), var(--det)) 0 100% / 2px 12px no-repeat,
    linear-gradient(var(--det), var(--det)) 100% 100% / 12px 2px no-repeat,
    linear-gradient(var(--det), var(--det)) 100% 100% / 2px 12px no-repeat;
}

.pub:first-child::before { inset: -0.6rem -1rem 0.6rem; }

.pub:hover::before { opacity: 1; inset: 0.3rem -1.3rem; }
.pub:first-child:hover::before { inset: -0.9rem -1.3rem 0.3rem; }

.venue {
  margin: 0;
  color: var(--accent);
  font-size: 0.62rem;
}

.pub h3 {
  margin: 0.45rem 0 0.45rem;
  font-family: var(--serif);
  font-size: clamp(1.2rem, 1.9vw, 1.42rem);
  font-weight: 400;
  letter-spacing: -0.02em;
  line-height: 1.3;
}

.pub h3 a {
  color: inherit;
  text-decoration-color: var(--line);
}

.pub h3 a:hover { text-decoration-color: var(--det); }

.authors {
  margin: 0;
  color: var(--muted);
  font-size: 0.93rem;
  font-weight: 300;
}

.authors .me { color: var(--ink); font-weight: 500; }

.flags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin: 0.75rem 0 0;
}

.flags strong {
  padding: 0.22rem 0.45rem 0.18rem;
  border: 1px solid var(--det);
  color: var(--det);
  font-size: 0.56rem;
  box-shadow: 2px 2px 0 rgba(111, 245, 223, 0.18);
}

/* ---------- news ---------- */

.news {
  margin: 0;
  padding: 0;
  list-style: none;
}

.news li {
  position: relative;
  display: grid;
  grid-template-columns: 6.5rem minmax(0, 1fr);
  gap: 0.5rem 1.2rem;
  align-items: baseline;
  padding: 1rem 0;
  border-top: 1px solid var(--line);
}

.news li:first-child { border-top: 0; padding-top: 0.25rem; }

.news li::before { inset: 0.25rem -1rem; }
.news li:hover::before { opacity: 1; inset: 0 -1.3rem; }

.news time {
  color: var(--det);
  font-size: 0.7rem;
  font-variant-numeric: tabular-nums;
  text-shadow: 0 0 10px rgba(111, 245, 223, 0.45);
}

.news span { font-size: 1.05rem; font-weight: 300; }

/* ---------- experience ---------- */

.label {
  margin: 2.6rem 0 0.5rem;
  color: var(--det);
  font-size: 0.62rem;
}

.zone-body > .label:first-child { margin-top: 0.2rem; }

.row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 0.35rem 1.5rem;
  align-items: baseline;
  padding: 0.9rem 0;
  border-top: 1px solid var(--line);
}

.row p { margin: 0; }

.row .sub { color: var(--muted); font-weight: 300; font-size: 0.95rem; }

.when {
  color: var(--muted);
  font-size: 0.92rem;
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

.note {
  max-width: 40rem;
  margin: 1.2rem 0 0;
  color: var(--muted);
  font-weight: 300;
}

.award {
  max-width: 26rem;
  margin: 1rem 0 0;
}

.award img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  transition: transform 0.4s ease;
}

.award img:hover { transform: translateY(-3px) rotate(-0.4deg); }

.award figcaption {
  margin-top: 0.65rem;
  color: var(--muted);
  font-size: 0.9rem;
  font-weight: 300;
}

/* ---------- footer & floor ---------- */

.foot {
  position: relative;
  padding: 3rem 0 2rem;
  color: var(--faint);
  font-size: 0.88rem;
}

.foot-inner {
  display: grid;
  grid-template-columns: minmax(10rem, 14rem) minmax(0, 1fr) auto;
  gap: 1.2rem 3.5rem;
  align-items: start;
  padding-top: 1.6rem;
  border-top: 1px solid var(--line);
}

.foot p { margin: 0.15rem 0; }

.foot-mark {
  margin-bottom: 0.4rem !important;
  color: var(--det);
  font-size: 0.6rem;
}

.hint { max-width: 34rem; }

kbd {
  padding: 0 0.3rem;
  border: 1px solid var(--line);
  font-size: 0.7em;
}

.resurface {
  color: var(--muted);
  font-size: 0.64rem;
  text-decoration: none;
  white-space: nowrap;
}

.resurface:hover { color: var(--ink); }

.floor-band {
  position: relative;
  height: 12rem;
}

.mission {
  position: absolute;
  left: 50%;
  top: 5.6rem;
  z-index: 2;
  text-align: center;
  white-space: nowrap;
  opacity: 0;
  transform: translateX(-50%) scale(0.4);
  pointer-events: none;
}

.mission.show {
  opacity: 1;
  transform: translateX(-50%);
  animation: mission-in 0.7s steps(7) both;
}

.mission-title {
  margin: 0;
  font-family: var(--pixel);
  font-size: clamp(1.35rem, 4.6vw, 2.7rem);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  line-height: 1;
  color: #ffd27a;
  text-shadow: 3px 3px 0 #a8441c, 6px 6px 0 rgba(0, 0, 0, 0.5), 0 0 24px rgba(255, 210, 122, 0.35);
}

.mission.show .mission-title { animation: mission-blink 0.9s steps(2) 0.7s 3; }

.mission-sub {
  margin: 0.8rem 0 0;
  color: #e9f2ef;
  font-size: 0.56rem;
  opacity: 0.8;
}

@keyframes mission-in {
  0% { opacity: 0; transform: translateX(-50%) scale(0.4); }
  60% { opacity: 1; transform: translateX(-50%) scale(1.12); }
  100% { opacity: 1; transform: translateX(-50%) scale(1); }
}

@keyframes mission-blink { 50% { opacity: 0.25; } }

/* kind tips: a short pill beside the depth gauge */
.dive-tip {
  position: fixed;
  right: calc(clamp(0.75rem, 1.6vw, 1.6rem) + 5rem);
  top: 50%;
  z-index: 26;
  display: flex;
  align-items: center;
  gap: 0.45rem;
  max-width: min(17rem, calc(100vw - 2rem));
  padding: 0.32rem 0.6rem 0.3rem 0.5rem;
  color: #0f1f1e;
  background: rgba(253, 251, 246, 0.95);
  box-shadow: 0 0 0 1px rgba(15, 31, 30, 0.5), 3px 3px 0 1px rgba(15, 31, 30, 0.12);
  font-size: 0.74rem;
  line-height: 1.3;
  white-space: nowrap;
  pointer-events: none;
  animation: tip-in 0.24s steps(3) both;
}

.dive-tip[hidden] { display: none; }

.dive-tip.out { animation: tip-out 0.3s steps(3) both; }

body[data-tone="dark"] .dive-tip {
  color: #e9f2ef;
  background: rgba(5, 19, 29, 0.92);
  box-shadow: 0 0 0 1px rgba(111, 245, 223, 0.7), 0 0 14px rgba(111, 245, 223, 0.18);
}

.dive-tip-arrow {
  color: #12a58c;
  font-size: 0.55rem;
}

body[data-tone="dark"] .dive-tip-arrow { color: #6ff5df; }

.dive-tip-text {
  overflow: hidden;
  text-overflow: ellipsis;
}

@keyframes tip-in {
  from { opacity: 0; transform: translateX(8px); }
  to { opacity: 1; transform: none; }
}

@keyframes tip-out {
  to { opacity: 0; }
}


/* ---------- creatures ---------- */

#reef {
  position: absolute;
  left: 0;
  top: 0;
  z-index: 5;
  width: 100%;
  height: 0;
  pointer-events: none;
}

.critter {
  position: absolute;
  left: 0;
  top: 0;
  will-change: transform;
  pointer-events: none;
}

.critter-btn {
  display: block;
  padding: 0;
  border: 0;
  background: transparent;
  line-height: 0;
  cursor: grab;
  touch-action: none;
  pointer-events: auto;
  -webkit-tap-highlight-color: transparent;
}

.critter-flip,
.critter-body {
  display: block;
  transform-origin: 50% 60%;
}

.critter canvas {
  display: block;
  image-rendering: pixelated;
  transition: filter 0.3s ease;
}

.critter[data-tone="dark"] canvas {
  filter: drop-shadow(0 0 1px rgba(170, 255, 240, 0.7)) drop-shadow(0 0 6px rgba(111, 245, 223, 0.28));
}

.critter-btn:hover canvas,
.critter.held canvas {
  filter: brightness(1.12) drop-shadow(0 0 6px rgba(255, 246, 220, 0.85));
}

.critter.held .critter-btn { cursor: grabbing; }

.critter.held .critter-body { animation: wriggle 0.32s ease-in-out infinite; }

body.dragging,
body.dragging * {
  user-select: none;
  cursor: grabbing;
}

/* detection box + tag (hover, focus, or vision mode) */
.critter .box {
  position: absolute;
  inset: -7px;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.18s ease, inset 0.22s ease;
  background:
    linear-gradient(var(--det), var(--det)) 0 0 / 10px 2px no-repeat,
    linear-gradient(var(--det), var(--det)) 0 0 / 2px 10px no-repeat,
    linear-gradient(var(--det), var(--det)) 100% 0 / 10px 2px no-repeat,
    linear-gradient(var(--det), var(--det)) 100% 0 / 2px 10px no-repeat,
    linear-gradient(var(--det), var(--det)) 0 100% / 10px 2px no-repeat,
    linear-gradient(var(--det), var(--det)) 0 100% / 2px 10px no-repeat,
    linear-gradient(var(--det), var(--det)) 100% 100% / 10px 2px no-repeat,
    linear-gradient(var(--det), var(--det)) 100% 100% / 2px 10px no-repeat;
}

.critter .tag {
  position: absolute;
  left: -7px;
  bottom: calc(100% + 6px);
  z-index: 3;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  visibility: hidden;
  opacity: 0;
  pointer-events: auto;
  transition: opacity 0.18s ease 0.35s, visibility 0s linear 0.53s;
}

.tag-head {
  display: flex;
  align-items: center;
  gap: 0.3rem;
  padding: 0.14rem 0.16rem 0.12rem 0.36rem;
  background: var(--det);
  color: var(--det-ink);
  font-size: 0.52rem;
  line-height: 1.25;
  white-space: nowrap;
}

.tag-head b { font-weight: 400; opacity: 0.65; }

.tag-arrow {
  display: grid;
  place-items: center;
  width: 1.15rem;
  height: 1.15rem;
  padding: 0;
  border: 0;
  background: rgba(4, 19, 28, 0.14);
  color: inherit;
  font-size: 0.6rem;
  line-height: 1;
  cursor: pointer;
  transition: transform 0.2s steps(3), background-color 0.15s ease;
}

.tag-arrow:hover { background: rgba(4, 19, 28, 0.28); }

.critter.taxa-open .tag-arrow { transform: rotate(90deg); }

.taxa {
  min-width: 15rem;
  margin: 0 0 4px;
  padding: 0.55rem 0.7rem 0.5rem 0.6rem;
  list-style: none;
  background: rgba(4, 19, 28, 0.95);
  color: #e9f2ef;
  box-shadow: 0 0 0 1px var(--det), 4px 4px 0 1px rgba(0, 0, 0, 0.25), 0 16px 32px rgba(0, 0, 0, 0.28);
}

.taxa[hidden] { display: none; }

.taxa li {
  display: flex;
  align-items: baseline;
  gap: 0.45rem;
  padding-left: calc(var(--i) * 0.5rem);
  font-size: 0.8rem;
  line-height: 1.55;
  white-space: nowrap;
  animation: taxa-in 0.24s steps(3) both;
  animation-delay: calc(var(--i) * 50ms);
}

.taxa li::before {
  content: "└";
  color: var(--det);
  font-size: 0.7rem;
}

.taxa li:first-child::before { content: "■"; font-size: 0.5rem; }

.taxa .rank {
  min-width: 3.9rem;
  opacity: 0.55;
  font-family: var(--pixel);
  font-size: 0.46rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.taxa .genus .taxon,
.taxa .species .taxon {
  font-family: var(--serif);
  font-style: italic;
}

.taxa .species,
.taxa .unit { color: #6ff5df; }

@keyframes taxa-in {
  from { opacity: 0; transform: translateX(-4px); }
  to { opacity: 1; transform: none; }
}

.critter:hover .box,
.critter:focus-within .box,
.critter.taxa-open .box,
body.vision .critter .box { opacity: 1; inset: -10px; }

.critter:hover .tag,
.critter:focus-within .tag,
.critter.taxa-open .tag,
body.vision .critter .tag {
  visibility: visible;
  opacity: 1;
  transition-delay: 0s;
}

.critter.talking .box,
.critter.talking .tag,
.critter.held .tag {
  visibility: hidden !important;
  opacity: 0 !important;
}

/* click reactions */
.r-hop { animation: hop 0.55s cubic-bezier(.3,1.6,.5,1); }
.r-spin { animation: spin 0.6s ease-out; }
.r-flipy { animation: flipy 0.7s ease-in-out; }
.r-wiggle { animation: wiggle 0.6s ease-in-out; }
.r-pulse { animation: pulse 0.7s ease-out; }
.r-jump { animation: jump 0.85s cubic-bezier(.25,.8,.4,1); }
.r-dash { animation: dash 0.5s ease-out; }
.r-shake { animation: shake 0.45s steps(6); }

@keyframes hop {
  0% { transform: scale(1, 1); }
  25% { transform: scale(1.18, 0.82); }
  55% { transform: translateY(-12px) scale(0.9, 1.12); }
  100% { transform: none; }
}

@keyframes spin { to { transform: rotate(360deg); } }

@keyframes flipy {
  0% { transform: rotateY(0); }
  100% { transform: rotateY(720deg); }
}

@keyframes wiggle {
  0%, 100% { transform: rotate(0); }
  20% { transform: rotate(-10deg); }
  40% { transform: rotate(9deg); }
  60% { transform: rotate(-6deg); }
  80% { transform: rotate(4deg); }
}

@keyframes wriggle {
  0%, 100% { transform: rotate(-4deg) translateY(-2px); }
  50% { transform: rotate(4deg) translateY(-2px); }
}

@keyframes pulse {
  0% { transform: scale(1); filter: brightness(1); }
  30% { transform: scale(1.18, 0.86); filter: brightness(1.6); }
  60% { transform: scale(0.94, 1.1); }
  100% { transform: scale(1); filter: brightness(1); }
}

@keyframes jump {
  0% { transform: translateY(0) rotate(0); }
  45% { transform: translateY(-46px) rotate(-200deg); }
  80% { transform: translateY(-6px) rotate(-360deg); }
  100% { transform: translateY(0) rotate(-360deg); }
}

@keyframes dash {
  0% { transform: translateX(0) scaleX(1); }
  30% { transform: translateX(-6px) scaleX(0.86); }
  60% { transform: translateX(16px) scaleX(1.12); }
  100% { transform: none; }
}

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  20% { transform: translateX(-3px); }
  40% { transform: translateX(3px); }
  60% { transform: translateX(-3px) translateY(-3px); }
  80% { transform: translateX(3px); }
}

/* quips: tiny pixel speech */
.quip {
  position: absolute;
  left: 50%;
  bottom: calc(100% + 12px);
  z-index: 2;
  max-width: 14rem;
  padding: 0.38rem 0.55rem 0.34rem;
  background: #fffdf8;
  color: #0f1f1e;
  font-family: var(--pixel);
  font-size: 0.56rem;
  line-height: 1.45;
  text-transform: uppercase;
  width: max-content;
  text-align: center;
  box-shadow: 0 0 0 2px #0f1f1e, 4px 4px 0 2px rgba(15, 31, 30, 0.22);
  transform: translateX(-50%);
  pointer-events: auto;
  animation: quip-in 0.28s steps(4) both;
}

.quip::after {
  content: "";
  position: absolute;
  left: calc(50% - 4px);
  top: 100%;
  width: 8px;
  height: 6px;
  background: #fffdf8;
  box-shadow: 0 2px 0 0 #0f1f1e;
  clip-path: polygon(0 0, 100% 0, 50% 100%);
}

.quip.out { animation: quip-out 0.24s steps(3) both; }

[data-tone="dark"] .quip,
.critter[data-tone="dark"] .quip {
  background: #04131c;
  color: #e9f2ef;
  box-shadow: 0 0 0 2px #6ff5df, 0 0 18px rgba(111, 245, 223, 0.35);
}

.critter[data-tone="dark"] .quip::after { background: #04131c; box-shadow: none; }

@keyframes quip-in {
  from { opacity: 0; transform: translateX(-50%) translateY(6px) scale(0.85); }
  to { opacity: 1; transform: translateX(-50%); }
}

@keyframes quip-out {
  to { opacity: 0; transform: translateX(-50%) translateY(-6px); }
}

/* ---------- chat panel ---------- */

.chat {
  --tail: 50%;
  position: absolute;
  left: 0;
  top: 0;
  z-index: 20;
  display: flex;
  flex-direction: column;
  width: min(21rem, calc(100vw - 1.5rem));
  max-height: min(27rem, calc(100svh - var(--head-h) - 2rem));
  padding: 0.85rem 0.9rem 0.7rem;
  color: #0f1f1e;
  background: rgba(253, 251, 246, 0.99);
  box-shadow: 0 0 0 2px #0f1f1e, 6px 6px 0 2px rgba(15, 31, 30, 0.16), 0 30px 60px rgba(15, 31, 30, 0.18);
  pointer-events: auto;
  animation: chat-in 0.26s steps(5) both;
}

.chat[hidden] { display: none; }

.chat::after {
  content: "";
  position: absolute;
  left: calc(var(--tail) - 7px);
  width: 14px;
  height: 10px;
  background: inherit;
}

.chat.above::after {
  top: 100%;
  clip-path: polygon(0 0, 100% 0, 50% 100%);
  filter: drop-shadow(0 2px 0 #0f1f1e);
}

.chat.below::after {
  bottom: 100%;
  clip-path: polygon(50% 0, 100% 100%, 0 100%);
}

.chat.dark {
  color: #e9f2ef;
  background: rgba(5, 19, 29, 0.985);
  box-shadow: 0 0 0 2px #6ff5df, 0 0 28px rgba(111, 245, 223, 0.22), 0 30px 60px rgba(0, 0, 0, 0.45);
}

@keyframes chat-in {
  from { opacity: 0; transform: translateY(8px) scale(0.97); }
  to { opacity: 1; transform: none; }
}

.chat-head {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  padding-bottom: 0.65rem;
  border-bottom: 1px solid rgba(15, 31, 30, 0.12);
}

.chat.dark .chat-head { border-color: rgba(233, 242, 239, 0.12); }

.chat-avatar {
  flex: none;
  width: 40px;
  height: 40px;
  object-fit: contain;
  image-rendering: pixelated;
  background: rgba(63, 127, 118, 0.1);
  box-shadow: inset 0 0 0 1px rgba(63, 127, 118, 0.25);
}

.chat.dark .chat-avatar { background: rgba(111, 245, 223, 0.08); box-shadow: inset 0 0 0 1px rgba(111, 245, 223, 0.25); }

.chat-who { min-width: 0; flex: 1; }

.chat-name {
  margin: 0;
  font-family: var(--serif);
  font-size: 1.18rem;
  font-weight: 500;
  letter-spacing: -0.02em;
  line-height: 1.1;
}

.chat-meta {
  margin: 0.2rem 0 0;
  opacity: 0.62;
  font-size: 0.5rem;
  line-height: 1.3;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.chat-close {
  align-self: flex-start;
  width: 1.7rem;
  height: 1.7rem;
  border: 0;
  background: transparent;
  opacity: 0.55;
  font-family: var(--pixel);
  font-size: 0.7rem;
  cursor: pointer;
}

.chat-close:hover { opacity: 1; }

.chat-log {
  flex: 1 1 auto;
  min-height: 3rem;
  margin: 0;
  padding: 0.7rem 0.1rem 0.2rem;
  overflow-y: auto;
  list-style: none;
  overscroll-behavior: contain;
  scrollbar-width: thin;
}

.chat-log li {
  max-width: 88%;
  margin: 0 0 0.55rem;
  font-size: 0.93rem;
  line-height: 1.45;
}

.chat-log li.them { margin-right: auto; }

.chat-log li.me {
  margin-left: auto;
  padding: 0.38rem 0.6rem;
  background: rgba(63, 127, 118, 0.12);
  text-align: right;
}

.chat.dark .chat-log li.me { background: rgba(111, 245, 223, 0.12); }

.chat-log li.typing span {
  display: inline-block;
  width: 5px;
  height: 5px;
  margin-right: 4px;
  background: currentColor;
  animation: blink 1s steps(2) infinite;
}

.chat-log li.typing span:nth-child(2) { animation-delay: 0.2s; }
.chat-log li.typing span:nth-child(3) { animation-delay: 0.4s; }

@keyframes blink { 50% { opacity: 0.2; } }

.chat-chips[hidden] { display: none; }

.chat-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  padding: 0.35rem 0 0.5rem;
}

.chat-chips button {
  padding: 0.28rem 0.45rem 0.24rem;
  border: 1px solid currentColor;
  background: transparent;
  opacity: 0.7;
  font-family: var(--pixel);
  font-size: 0.5rem;
  text-transform: uppercase;
  cursor: pointer;
  transition: opacity 0.15s ease, transform 0.15s ease;
}

.chat-chips button:hover { opacity: 1; transform: translateY(-1px); }

.chat-say {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding-top: 0.5rem;
  border-top: 1px solid rgba(15, 31, 30, 0.12);
}

.chat.dark .chat-say { border-color: rgba(233, 242, 239, 0.12); }

.chat-say input {
  flex: 1;
  min-width: 0;
  padding: 0.35rem 0;
  border: 0;
  background: transparent;
  color: inherit;
  font: inherit;
  font-size: 16px;
}

.chat-say input::placeholder { color: inherit; opacity: 0.45; }

.chat-say input:focus-visible {
  outline: none;
  box-shadow: inset 0 -2px 0 var(--det);
}

.chat-say button {
  padding: 0.38rem 0.6rem 0.32rem;
  border: 0;
  background: #0f1f1e;
  color: #fdfbf6;
  font-family: var(--pixel);
  font-size: 0.56rem;
  text-transform: uppercase;
  cursor: pointer;
}

.chat.dark .chat-say button { background: #6ff5df; color: #04131c; }

.chat-via {
  margin: 0.4rem 0 0;
  opacity: 0.5;
  font-size: 0.48rem;
}

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

/* ---------- responsive ---------- */

@media (max-width: 1100px) {
  .gauge { display: none; }
  .dive-tip {
    left: 50%;
    right: auto;
    top: calc(var(--head-h) + 0.5rem) !important;
    transform: translateX(-50%);
    font-size: 0.7rem;
    animation: none;
  }
}

@media (max-width: 860px) {
  .nav { gap: 1rem; }
  .vision-toggle .px { display: none; }
  .vision-toggle { padding: 0.4rem; }
  .zone-grid { grid-template-columns: 1fr; gap: 1.6rem; }
  .zone-head {
    position: static;
    display: flex;
    align-items: baseline;
    flex-wrap: wrap;
    gap: 0.4rem 0.9rem;
  }
  .zone-no { margin: 0; }
  .zone-meta { margin: 0; flex-basis: 100%; }
  .zone-meta br { display: none; }
  .zone-meta .sep { display: inline; }
  .foot-inner { grid-template-columns: 1fr; }
}

@media (max-width: 720px) {
  :root { --head-h: 5.3rem; }
  .top-inner {
    flex-wrap: wrap;
    align-content: center;
    gap: 0.35rem 0.8rem;
    width: calc(100% - 2rem);
  }
  .nav {
    order: 3;
    flex-basis: 100%;
    gap: 1.1rem;
    margin-left: 0;
  }
  .nav a { font-size: 0.86rem; }
  .nav a::after { bottom: -0.3rem; }
  .top-side { margin-left: auto; }
  .wrap { width: calc(100% - 2rem); }
  .zone-surface { padding-top: calc(var(--head-h) + 4.5rem); }
  .hero { grid-template-columns: 1fr; gap: 2.6rem; }
  .portrait-wrap { width: min(72%, 15rem); }
  .scan-card { left: -0.6rem; right: -2.4rem; font-size: 0.68rem; }
  .lining .rainbow { left: -0.6rem; width: calc(100% + 0.6rem); }
  .stage { height: 11rem; }
  .zone-body { padding-bottom: 4.5rem; }
  .news li { grid-template-columns: 1fr; gap: 0.2rem; }
  .row { grid-template-columns: 1fr; }
  .when { white-space: normal; }
  .chat.sheet {
    position: fixed;
    left: 0.75rem !important;
    right: 0.75rem;
    top: auto !important;
    bottom: 0.75rem;
    width: auto;
    max-height: 62svh;
  }
  .chat.sheet::after { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

@media print {
  #ocean, #trail, #pointer, #reef, .gauge, .top, .surface-band, .hint, .resurface, .floor-band, .arcade, .photo-bubbles { display: none !important; }
  body { background: #fff !important; color: #000; }
  [data-tone="dark"] { --ink: #000; --muted: #333; --faint: #555; --line: #ddd; --accent: #1e4a46; --det: #1e4a46; }
}