/* 人格星球 · 星图仪
   A single committed night-sky theme: the planets carry every colour,
   the ground stays quiet so they read as objects under glass. */

:root {
  --void: #070b18;
  --void-deep: #04070f;
  --plate: #0e1428;
  --plate-high: #141c36;
  --rule: #1e2a4a;
  --rule-bright: #2c3c66;
  --brass: #c6a15b;
  --brass-dim: #8a6f3d;
  --ink: #edf0f8;
  --ink-soft: #c3ccdf;
  --ink-dim: #8e9bba;
  --ink-faint: #5d6885;

  --serif: "Songti SC", "STSong", "STZhongsong", "Source Han Serif SC",
    "Noto Serif CJK SC", "SimSun", Georgia, serif;
  --sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", -apple-system,
    system-ui, sans-serif;
  --mono: ui-monospace, "SF Mono", Menlo, Consolas, monospace;

  --shell: 74rem;
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--void);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

img {
  max-width: 100%;
  /* the width/height attributes reserve aspect ratio; height:auto keeps it */
  height: auto;
  display: block;
}

/* figure carries a 40px UA side margin that would crush grid items */
figure,
blockquote {
  margin: 0;
}

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

.shell {
  width: 100%;
  max-width: var(--shell);
  margin: 0 auto;
  padding: 0 clamp(1.25rem, 5vw, 3rem);
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 999;
  background: var(--brass);
  color: var(--void);
  padding: 0.7rem 1.2rem;
  font-size: 0.9rem;
}

.skip-link:focus {
  left: 1rem;
  top: 1rem;
}

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

/* ─────────── shared plate furniture ─────────── */

.plate-label {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--brass);
  margin: 0;
}

.plate-label::after {
  content: "";
  flex: 1;
  height: 1px;
  background: linear-gradient(90deg, var(--brass-dim), transparent);
}

.plate-title {
  font-family: var(--serif);
  font-weight: 400;
  letter-spacing: 0.06em;
  line-height: 1.35;
  margin: 0;
  text-wrap: balance;
}

.rule {
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--rule-bright), transparent);
  border: 0;
  margin: 0;
}

/* ─────────── starfield ─────────── */

#starfield {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  pointer-events: none;
}

.page-glow {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background:
    radial-gradient(60rem 40rem at 50% -10%, rgba(67, 110, 233, 0.14), transparent 70%),
    radial-gradient(40rem 30rem at 90% 20%, rgba(198, 161, 91, 0.06), transparent 70%);
}

/* ─────────── header ─────────── */

.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 60;
  transition: background 0.4s var(--ease), border-color 0.4s var(--ease);
  border-bottom: 1px solid transparent;
}

.site-header.is-scrolled {
  background: rgba(7, 11, 24, 0.82);
  backdrop-filter: blur(18px) saturate(1.2);
  -webkit-backdrop-filter: blur(18px) saturate(1.2);
  border-bottom-color: var(--rule);
}

.header-inner {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  height: 4.75rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  margin-right: auto;
}

.brand-mark {
  position: relative;
  width: 1.85rem;
  height: 1.85rem;
  flex: none;
}

.brand-mark i {
  position: absolute;
  inset: 0;
  border: 1px solid var(--brass-dim);
  border-radius: 50%;
}

.brand-mark i:nth-child(1) {
  transform: rotate(-24deg) scaleY(0.42);
}

.brand-mark i:nth-child(2) {
  transform: rotate(38deg) scaleY(0.42);
}

.brand-mark i:nth-child(3) {
  inset: 38%;
  background: var(--brass);
  border-color: var(--brass);
}

.brand strong {
  display: block;
  font-family: var(--serif);
  font-size: 1.05rem;
  font-weight: 400;
  letter-spacing: 0.16em;
}

.brand small {
  display: block;
  font-family: var(--mono);
  font-size: 0.56rem;
  letter-spacing: 0.34em;
  color: var(--ink-faint);
}

.site-nav {
  display: flex;
  gap: 1.9rem;
  font-size: 0.88rem;
  color: var(--ink-dim);
}

.site-nav a {
  position: relative;
  padding: 0.3rem 0;
  transition: color 0.3s var(--ease);
}

.site-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 1px;
  background: var(--brass);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 0.42s var(--ease-out);
}

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

.site-nav a:hover::after,
.site-nav a.is-active::after {
  transform: scaleX(1);
  transform-origin: left;
}

.menu-toggle {
  display: none;
}

.button {
  --btn-fg: var(--void);
  --btn-bg: var(--brass);
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  padding: 0.78rem 1.6rem;
  border: 1px solid transparent;
  border-radius: 999px;
  background: var(--btn-bg);
  color: var(--btn-fg);
  font-family: inherit;
  font-size: 0.9rem;
  letter-spacing: 0.06em;
  cursor: pointer;
  overflow: hidden;
  transition: transform 0.35s var(--ease-out), box-shadow 0.35s var(--ease);
}

.button span {
  position: relative;
  z-index: 1;
  transition: transform 0.4s var(--ease-out);
}

.button:hover {
  transform: translateY(-2px);
  box-shadow: 0 14px 34px -14px rgba(198, 161, 91, 0.7);
}

.button:hover .button__arrow {
  transform: translateX(4px);
}

.button--ghost {
  --btn-bg: transparent;
  --btn-fg: var(--ink);
  border-color: var(--rule-bright);
}

.button--ghost:hover {
  border-color: var(--brass-dim);
  box-shadow: none;
  background: rgba(198, 161, 91, 0.07);
}

.button--sm {
  padding: 0.56rem 1.15rem;
  font-size: 0.82rem;
}

/* ─────────── hero orrery ─────────── */

.hero {
  position: relative;
  z-index: 1;
  min-height: 100svh;
  display: grid;
  place-items: center;
  padding: 7rem 0 4rem;
  overflow: hidden;
}

.hero__inner {
  position: relative;
  width: 100%;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: clamp(2rem, 5vw, 4.5rem);
}

.hero__copy {
  max-width: 30rem;
}

.hero__frame {
  border-top: 1px solid var(--rule-bright);
  padding-top: 1.4rem;
  margin-bottom: 2.1rem;
  display: flex;
  justify-content: space-between;
  font-family: var(--mono);
  font-size: 0.62rem;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--ink-faint);
}

.hero__frame span:last-child {
  color: var(--brass-dim);
}

.hero h1 {
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(2.3rem, 5.4vw, 3.9rem);
  line-height: 1.28;
  letter-spacing: 0.05em;
  margin: 0 0 1.6rem;
}

.hero h1 em {
  display: block;
  font-style: normal;
  color: var(--brass);
}

.hero__lede {
  color: var(--ink-soft);
  font-size: 1rem;
  line-height: 1.95;
  margin: 0 0 2.4rem;
  max-width: 26rem;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem;
  margin-bottom: 3rem;
}

.hero__facts {
  display: flex;
  gap: 2.6rem;
  padding-top: 1.6rem;
  border-top: 1px solid var(--rule);
}

.hero__facts div {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
}

.hero__facts b {
  font-family: var(--serif);
  font-size: 1.75rem;
  font-weight: 400;
  line-height: 1;
  color: var(--ink);
  font-variant-numeric: tabular-nums;
}

.hero__facts small {
  font-family: var(--mono);
  font-size: 0.6rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--ink-faint);
}

/* orrery ------------------------------------------------ */

/* The orrery scales through its own font-size, not a transform, so the grid
   track shrinks with it. Every orbit radius and planet width below is in em. */
.orrery {
  position: relative;
  font-size: var(--orrery-fs, 1rem);
  width: 34em;
  height: 34em;
  flex: none;
}

.orrery__tilt {
  position: absolute;
  inset: 0;
  transform: rotateX(var(--tilt-x, 0deg)) rotateY(var(--tilt-y, 0deg));
  transform-style: preserve-3d;
  transition: transform 0.9s var(--ease-out);
}

.orrery__sun {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 7.5em;
  height: 7.5em;
  transform: translate(-50%, -50%);
  display: grid;
  place-items: center;
  text-align: center;
}

.orrery__sun::before {
  content: "";
  position: absolute;
  inset: -55%;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(198, 161, 91, 0.2), transparent 62%);
  animation: breathe 7s ease-in-out infinite;
}

.orrery__sun span {
  position: relative;
  font-family: var(--serif);
  font-size: max(0.72rem, 1.05em);
  letter-spacing: 0.3em;
  color: var(--brass);
  text-indent: 0.3em;
  white-space: nowrap;
}

.orrery__sun small {
  position: relative;
  display: block;
  font-family: var(--mono);
  font-size: max(0.5rem, 0.55em);
  letter-spacing: 0.26em;
  color: var(--ink-faint);
  margin-top: 0.35em;
  white-space: nowrap;
}

.orbit {
  position: absolute;
  top: 50%;
  left: 50%;
  width: calc(var(--r) * 2);
  height: calc(var(--r) * 2);
  margin: calc(var(--r) * -1) 0 0 calc(var(--r) * -1);
  border: 1px solid var(--rule);
  border-radius: 50%;
  animation: orbit-spin var(--period) linear infinite;
  transition: border-color 0.5s var(--ease);
}

.orbit::after {
  content: "";
  position: absolute;
  inset: -1px;
  border-radius: 50%;
  border: 1px solid transparent;
  transition: border-color 0.5s var(--ease);
}

.orrery:hover .orbit {
  border-color: var(--rule-bright);
}

.orbit__slot {
  position: absolute;
  inset: 0;
  transform: rotate(var(--a));
}

.planet {
  position: absolute;
  top: 0;
  left: 50%;
  width: var(--pw);
  margin-left: calc(var(--pw) / -2);
  margin-top: calc(var(--pw) / -2);
  animation: orbit-spin var(--period) linear infinite reverse;
  cursor: pointer;
  background: none;
  border: 0;
  padding: 0;
  font: inherit;
  color: inherit;
}

.planet__body {
  position: relative;
  display: block;
  transition: transform 0.55s var(--ease-out);
  animation: bob var(--bob, 6s) ease-in-out infinite;
  animation-delay: var(--bob-delay, 0s);
}

.planet img {
  width: 100%;
  height: auto;
  filter: drop-shadow(0 10px 22px rgba(0, 0, 0, 0.55));
  transition: filter 0.55s var(--ease);
}

.planet__halo {
  position: absolute;
  inset: -22%;
  border-radius: 50%;
  background: radial-gradient(circle, var(--tone), transparent 66%);
  opacity: 0;
  transform: scale(0.7);
  transition: opacity 0.55s var(--ease), transform 0.7s var(--ease-out);
  pointer-events: none;
}

.planet__name {
  position: absolute;
  top: calc(100% + 0.5rem);
  left: 50%;
  transform: translate(-50%, 6px);
  white-space: nowrap;
  font-family: var(--mono);
  font-size: 0.62rem;
  letter-spacing: 0.2em;
  color: var(--ink-soft);
  opacity: 0;
  transition: opacity 0.4s var(--ease), transform 0.4s var(--ease-out);
  pointer-events: none;
}

.planet:hover .planet__body,
.planet:focus-visible .planet__body {
  transform: scale(1.16);
}

.planet:hover .planet__halo,
.planet:focus-visible .planet__halo,
.planet.is-active .planet__halo {
  opacity: 0.85;
  transform: scale(1);
}

.planet:hover .planet__name,
.planet:focus-visible .planet__name {
  opacity: 1;
  transform: translate(-50%, 0);
}

.planet:hover img,
.planet:focus-visible img {
  filter: drop-shadow(0 14px 30px rgba(0, 0, 0, 0.6)) saturate(1.15);
}

/* readout panel ---------------------------------------- */

.readout {
  position: absolute;
  left: 50%;
  bottom: -1.5rem;
  transform: translateX(-50%);
  width: min(23rem, 82vw);
  padding: 1.15rem 1.35rem;
  background: rgba(14, 20, 40, 0.9);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border: 1px solid var(--rule);
  border-radius: 3px;
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0 1rem;
  align-items: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.45s var(--ease), transform 0.55s var(--ease-out);
}

.readout.is-visible {
  opacity: 1;
  transform: translateX(-50%) translateY(-0.75rem);
}

.readout__index {
  grid-row: span 2;
  font-family: var(--mono);
  font-size: 1.5rem;
  color: var(--brass);
  font-variant-numeric: tabular-nums;
}

.readout__name {
  font-family: var(--serif);
  font-size: 1.1rem;
  letter-spacing: 0.1em;
}

.readout__desc {
  font-size: 0.82rem;
  color: var(--ink-dim);
  line-height: 1.6;
}

.scroll-cue {
  position: absolute;
  left: 50%;
  bottom: 1.75rem;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--mono);
  font-size: 0.58rem;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--ink-faint);
}

.scroll-cue i {
  width: 1px;
  height: 2.6rem;
  background: linear-gradient(180deg, var(--brass-dim), transparent);
  animation: cue 2.4s ease-in-out infinite;
  transform-origin: top;
}

/* ─────────── sections ─────────── */

.section {
  position: relative;
  z-index: 1;
  padding: clamp(5rem, 12vw, 9rem) 0;
}

.section__head {
  max-width: 40rem;
  margin-bottom: clamp(2.75rem, 6vw, 4.5rem);
}

.section__head .plate-title {
  font-size: clamp(1.7rem, 3.6vw, 2.55rem);
  margin: 1.35rem 0 1rem;
}

.section__head p:last-child {
  color: var(--ink-dim);
  margin: 0;
  font-size: 0.95rem;
}

/* plate: the twelve ------------------------------------ */

.group {
  padding: 2.6rem 0;
  border-top: 1px solid var(--rule);
}

.group__head {
  display: flex;
  align-items: baseline;
  gap: 1.1rem;
  margin-bottom: 2rem;
}

.group__num {
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.2em;
  color: var(--brass);
}

.group__head h3 {
  font-family: var(--serif);
  font-size: 1.35rem;
  font-weight: 400;
  letter-spacing: 0.12em;
  margin: 0;
}

.group__head p {
  margin: 0;
  font-size: 0.85rem;
  color: var(--ink-faint);
}

/* One row per group, columns == item count, so a short row never leaves a
   filled cell behind. Separated cards mean empty space reads as void. */
.group__grid {
  display: grid;
  grid-template-columns: repeat(var(--cols, 4), minmax(0, 1fr));
  gap: 1rem;
}

.entry {
  position: relative;
  background: transparent;
  border: 1px solid var(--rule);
  border-radius: 2px;
  padding: 1.9rem 1.35rem 1.5rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.85rem;
  text-align: center;
  overflow: hidden;
  transition: background 0.55s var(--ease);
}

.entry::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 50% 30%, var(--tone), transparent 68%);
  opacity: 0;
  transition: opacity 0.6s var(--ease);
}

.entry:hover {
  background: var(--plate);
}

.entry:hover::before {
  opacity: 0.5;
}

.entry__img {
  position: relative;
  width: 5.4rem;
  transition: transform 0.65s var(--ease-out);
}

.entry:hover .entry__img {
  transform: translateY(-6px) scale(1.08);
}

.entry__name {
  position: relative;
  font-family: var(--serif);
  font-size: 1.02rem;
  letter-spacing: 0.14em;
}

.entry__desc {
  position: relative;
  font-size: 0.76rem;
  color: var(--ink-dim);
  line-height: 1.6;
  margin: 0;
}

.entry__idx {
  position: absolute;
  top: 0.7rem;
  left: 0.85rem;
  font-family: var(--mono);
  font-size: 0.6rem;
  color: var(--ink-faint);
  transition: color 0.5s var(--ease);
}

.entry:hover .entry__idx {
  color: var(--brass);
}

/* plate: capabilities ---------------------------------- */

.panels {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(16rem, 1fr));
  gap: 1.5rem;
}

.panel {
  position: relative;
  padding: 2.2rem 1.9rem 2rem;
  background: linear-gradient(180deg, var(--plate) 0%, rgba(14, 20, 40, 0.35) 100%);
  border: 1px solid var(--rule);
  border-radius: 3px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  transition: transform 0.6s var(--ease-out), border-color 0.5s var(--ease);
}

.panel::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--brass), transparent);
  transform: scaleX(0);
  transition: transform 0.7s var(--ease-out);
}

.panel:hover {
  transform: translateY(-6px);
  border-color: var(--rule-bright);
}

.panel:hover::after {
  transform: scaleX(1);
}

.panel__orb {
  width: 4.6rem;
  margin-bottom: 0.4rem;
  animation: bob 8s ease-in-out infinite;
}

.panel__eyebrow {
  font-family: var(--mono);
  font-size: 0.6rem;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--brass);
}

.panel h3 {
  font-family: var(--serif);
  font-size: 1.28rem;
  font-weight: 400;
  letter-spacing: 0.1em;
  margin: 0;
}

.panel p {
  margin: 0;
  font-size: 0.87rem;
  color: var(--ink-dim);
  line-height: 1.75;
  flex: 1;
}

.panel__link {
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.16em;
  color: var(--ink-soft);
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  transition: color 0.4s var(--ease), gap 0.4s var(--ease-out);
}

.panel:hover .panel__link {
  color: var(--brass);
  gap: 0.85rem;
}

/* plate: protocol -------------------------------------- */

.protocol {
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
  gap: clamp(2rem, 6vw, 5rem);
  align-items: start;
}

.protocol__list {
  list-style: none;
  margin: 0;
  padding: 0;
  counter-reset: protocol;
}

.protocol__list li {
  counter-increment: protocol;
  display: grid;
  grid-template-columns: 3.5rem 1fr;
  gap: 0 1rem;
  padding: 1.6rem 0;
  border-top: 1px solid var(--rule);
  transition: border-color 0.5s var(--ease);
}

.protocol__list li:hover {
  border-top-color: var(--brass-dim);
}

.protocol__list li::before {
  content: "0" counter(protocol);
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  color: var(--brass);
  padding-top: 0.35rem;
}

.protocol__list strong {
  font-family: var(--serif);
  font-size: 1.1rem;
  font-weight: 400;
  letter-spacing: 0.1em;
  display: block;
  margin-bottom: 0.3rem;
}

.protocol__list span {
  font-size: 0.87rem;
  color: var(--ink-dim);
  line-height: 1.75;
}

/* plate: closing --------------------------------------- */

.closing {
  position: relative;
  z-index: 1;
  padding: clamp(5rem, 12vw, 8rem) 0 clamp(4rem, 8vw, 6rem);
  text-align: center;
  overflow: hidden;
}

.closing__orb {
  width: clamp(7rem, 16vw, 10.5rem);
  margin: 0 auto 2rem;
  animation: bob 9s ease-in-out infinite;
  filter: drop-shadow(0 20px 50px rgba(255, 198, 79, 0.28));
}

.closing .plate-title {
  font-size: clamp(1.9rem, 4.4vw, 3rem);
  margin: 1.1rem auto 1.1rem;
  max-width: 22em;
}

.closing__lede {
  color: var(--ink-dim);
  max-width: 30rem;
  margin: 0 auto 2.4rem;
  font-size: 0.95rem;
}

.closing .plate-label {
  justify-content: center;
}

.closing .plate-label::after {
  display: none;
}

.closing .plate-label::before {
  content: "";
  width: 3rem;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--brass-dim));
}

/* ─────────── footer ─────────── */

.site-footer {
  position: relative;
  z-index: 1;
  border-top: 1px solid var(--rule);
  background: var(--void-deep);
  padding: 3rem 0 2.5rem;
}

.footer-top {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1.5rem 2.5rem;
  padding-bottom: 2rem;
}

.footer-top nav {
  display: flex;
  flex-wrap: wrap;
  gap: 1.6rem;
  margin-left: auto;
  font-size: 0.85rem;
  color: var(--ink-dim);
}

.footer-top nav a:hover {
  color: var(--brass);
}

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.75rem 2rem;
  padding-top: 1.75rem;
  border-top: 1px solid var(--rule);
  font-size: 0.78rem;
  color: var(--ink-faint);
}

.footer-bottom p {
  margin: 0;
  max-width: 40rem;
}

.footer-bottom a:hover {
  color: var(--brass);
}

.footer-bottom span {
  margin-left: 1.25rem;
}

/* ─────────── toast ─────────── */

.toast {
  position: fixed;
  left: 50%;
  bottom: 2rem;
  transform: translate(-50%, 1.5rem);
  z-index: 90;
  padding: 0.75rem 1.5rem;
  border-radius: 999px;
  background: var(--brass);
  color: var(--void);
  font-size: 0.85rem;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.4s var(--ease), transform 0.5s var(--ease-out);
}

.toast.is-visible {
  opacity: 1;
  transform: translate(-50%, 0);
}

/* ─────────── reveal ─────────── */

.reveal {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity 0.9s var(--ease-out), transform 0.9s var(--ease-out);
}

.reveal.is-visible {
  opacity: 1;
  transform: none;
}

.reveal--d1 {
  transition-delay: 0.1s;
}
.reveal--d2 {
  transition-delay: 0.2s;
}
.reveal--d3 {
  transition-delay: 0.3s;
}

/* load-in sequence */

.lift {
  opacity: 0;
  transform: translateY(20px);
}

body.is-ready .lift {
  animation: lift-in 1.05s var(--ease-out) forwards;
  animation-delay: var(--lift-delay, 0s);
}

/* Entrance lives on .orrery so .orrery__tilt keeps its pointer rotation. */
.orrery {
  opacity: 0;
}

body.is-ready .orrery {
  animation: orrery-in 1.6s var(--ease-out) 0.25s forwards;
}

/* ─────────── keyframes ─────────── */

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

/* em-based so the amplitude shrinks with the orrery instead of pushing
   small planets past the ring */
@keyframes bob {
  0%,
  100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-0.45em);
  }
}

@keyframes breathe {
  0%,
  100% {
    opacity: 0.55;
    transform: scale(0.94);
  }
  50% {
    opacity: 1;
    transform: scale(1.06);
  }
}

@keyframes cue {
  0%,
  100% {
    transform: scaleY(0.3);
    opacity: 0.35;
  }
  50% {
    transform: scaleY(1);
    opacity: 1;
  }
}

@keyframes lift-in {
  to {
    opacity: 1;
    transform: none;
  }
}

@keyframes orrery-in {
  from {
    opacity: 0;
    transform: scale(0.82);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

/* ─────────── responsive ─────────── */

@media (max-width: 1180px) {
  .orrery {
    --orrery-fs: 0.85rem;
  }
}

@media (max-width: 1024px) {
  .hero__inner {
    grid-template-columns: 1fr;
    justify-items: center;
    text-align: center;
    gap: 2.5rem;
  }

  .hero__copy {
    max-width: 34rem;
  }

  .hero__lede {
    margin-inline: auto;
  }

  .hero__actions,
  .hero__facts {
    justify-content: center;
  }

  .plate-label {
    justify-content: center;
  }

  .hero .plate-label::after {
    display: none;
  }

  .hero__frame {
    justify-content: center;
    gap: 1.5rem;
  }

  .orrery {
    --orrery-fs: 0.8rem;
  }

  .protocol {
    grid-template-columns: 1fr;
  }

  .group__grid {
    grid-template-columns: repeat(min(var(--cols, 4), 3), minmax(0, 1fr));
  }
}

@media (max-width: 860px) {
  .header-inner {
    height: 4.2rem;
  }

  .menu-toggle {
    display: inline-flex;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 2.6rem;
    height: 2.6rem;
    padding: 0;
    background: none;
    border: 1px solid var(--rule-bright);
    border-radius: 50%;
    cursor: pointer;
    order: 3;
  }

  .menu-toggle span {
    display: block;
    width: 1rem;
    height: 1px;
    margin: 0 auto;
    background: var(--ink);
    transition: transform 0.4s var(--ease), opacity 0.3s var(--ease);
  }

  .menu-toggle[aria-expanded="true"] span:nth-child(1) {
    transform: translateY(6px) rotate(45deg);
  }

  .menu-toggle[aria-expanded="true"] span:nth-child(2) {
    opacity: 0;
  }

  .menu-toggle[aria-expanded="true"] span:nth-child(3) {
    transform: translateY(-6px) rotate(-45deg);
  }

  .site-nav {
    position: fixed;
    inset: 4.2rem 0 auto;
    flex-direction: column;
    gap: 0;
    padding: 0 clamp(1.25rem, 5vw, 3rem);
    background: rgba(7, 11, 24, 0.97);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--rule);
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.5s var(--ease-out);
  }

  .site-nav.is-open {
    max-height: 22rem;
  }

  .site-nav a {
    padding: 1rem 0;
    border-bottom: 1px solid var(--rule);
    font-size: 0.95rem;
  }

  .site-nav a::after {
    display: none;
  }

  .header-inner > .button {
    display: none;
  }

  .orrery {
    --orrery-fs: 0.66rem;
  }

  .readout {
    bottom: 1rem;
  }

  .hero__facts {
    gap: 1.75rem;
  }
}

@media (max-width: 560px) {
  .orrery {
    --orrery-fs: 0.47rem;
  }

  .orrery__sun {
    display: none;
  }

  .hero {
    padding-top: 6rem;
  }

  .group__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.75rem;
  }

  .entry {
    padding: 1.6rem 0.75rem 1.2rem;
  }

  .entry__img {
    width: 4.2rem;
  }

  .footer-bottom span {
    margin-left: 0;
  }
}

/* ─────────── reduced motion ─────────── */

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }

  .reveal,
  .lift,
  .orrery {
    opacity: 1 !important;
    transform: none !important;
  }

  .orbit,
  .planet {
    animation: none !important;
  }
}

/* ═══════════════════════════════════════════════════════════
   Inner plates — shared components for the four sub-pages.
   ═══════════════════════════════════════════════════════════ */

/* ─── compact page hero ─── */

.page-hero {
  position: relative;
  z-index: 1;
  padding: clamp(7.5rem, 14vw, 10.5rem) 0 clamp(3rem, 7vw, 5rem);
}

.page-hero__inner {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(0, 0.75fr);
  gap: clamp(2rem, 6vw, 5rem);
  align-items: end;
}

.page-hero h1 {
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(2rem, 4.6vw, 3.2rem);
  line-height: 1.3;
  letter-spacing: 0.05em;
  margin: 1.5rem 0 1.3rem;
  text-wrap: balance;
}

.page-hero h1 em {
  font-style: normal;
  color: var(--brass);
}

.page-hero__lede {
  color: var(--ink-soft);
  font-size: 1rem;
  line-height: 1.95;
  margin: 0;
  max-width: 34rem;
}

.page-hero__aside {
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
  padding-bottom: 0.4rem;
}

.page-hero__orb {
  width: clamp(5rem, 9vw, 7rem);
  margin-bottom: 0.6rem;
  animation: bob 8s ease-in-out infinite;
  filter: drop-shadow(0 16px 34px rgba(0, 0, 0, 0.5));
}

/* ─── spec rows ─── */

.spec {
  display: grid;
  grid-template-columns: 7.5rem 1fr;
  gap: 0.35rem 1rem;
  padding: 0.7rem 0;
  border-top: 1px solid var(--rule);
  font-size: 0.85rem;
  margin: 0;
}

.spec dt {
  font-family: var(--mono);
  font-size: 0.62rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-faint);
  padding-top: 0.22rem;
}

.spec dd {
  margin: 0;
  color: var(--ink-soft);
}

/* ─── chips ─── */

.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.chip {
  display: inline-flex;
  align-items: center;
  padding: 0.32rem 0.75rem;
  border: 1px solid var(--rule);
  border-radius: 999px;
  font-size: 0.76rem;
  color: var(--ink-dim);
  transition: border-color 0.4s var(--ease), color 0.4s var(--ease),
    background 0.4s var(--ease);
}

.body-entry:hover .chip {
  border-color: var(--rule-bright);
  color: var(--ink-soft);
}

/* ─── catalogue strip (planets) ─── */

.strip {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: 0.5rem;
  padding: 1.4rem 0;
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
}

.strip a {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.45rem;
  padding: 0.4rem 0.15rem;
  border-radius: 2px;
}

.strip img {
  width: 2.4rem;
  transition: transform 0.5s var(--ease-out), filter 0.5s var(--ease);
  filter: saturate(0.55) brightness(0.8);
}

.strip span {
  font-size: 0.68rem;
  color: var(--ink-faint);
  transition: color 0.4s var(--ease);
  white-space: nowrap;
}

.strip a:hover img,
.strip a:focus-visible img {
  transform: translateY(-4px) scale(1.14);
  filter: none;
}

.strip a:hover span,
.strip a:focus-visible span {
  color: var(--ink);
}

/* ─── body entry (planets) ─── */

.body-entry {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.6fr);
  gap: clamp(1.75rem, 5vw, 4rem);
  align-items: center;
  padding: clamp(2.5rem, 5vw, 3.75rem) 0;
  border-top: 1px solid var(--rule);
  scroll-margin-top: 6rem;
}

.body-entry:nth-of-type(even) .body-entry__art {
  order: 2;
}

.body-entry__art {
  position: relative;
  display: grid;
  place-items: center;
  padding: 1.5rem;
}

.body-entry__art::before {
  content: "";
  position: absolute;
  inset: 8%;
  border-radius: 50%;
  background: radial-gradient(circle, var(--tone), transparent 68%);
  opacity: 0.55;
}

.body-entry__art::after {
  content: "";
  position: absolute;
  inset: 4%;
  border: 1px solid var(--rule);
  border-radius: 50%;
  opacity: 0.7;
}

.body-entry__art img {
  position: relative;
  width: min(12rem, 60%);
  animation: bob 9s ease-in-out infinite;
  filter: drop-shadow(0 18px 38px rgba(0, 0, 0, 0.55));
  transition: transform 0.7s var(--ease-out);
}

.body-entry:hover .body-entry__art img {
  transform: scale(1.06);
}

.body-entry__designation {
  font-family: var(--mono);
  font-size: 0.64rem;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--brass);
  display: block;
  margin-bottom: 0.75rem;
}

.body-entry h2 {
  font-family: var(--serif);
  font-size: clamp(1.4rem, 2.8vw, 1.9rem);
  font-weight: 400;
  letter-spacing: 0.1em;
  margin: 0 0 0.7rem;
}

.body-entry__desc {
  color: var(--ink-dim);
  font-size: 0.92rem;
  line-height: 1.85;
  margin: 0 0 1.4rem;
  max-width: 34rem;
}

.body-entry__foot {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1rem 1.5rem;
  margin-top: 1.3rem;
  padding-top: 1.1rem;
  border-top: 1px solid var(--rule);
}

.body-entry__count {
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  color: var(--ink-faint);
}

/* ─── emblem index (explore) ─── */

.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-bottom: 2.25rem;
}

.filter-bar button {
  padding: 0.42rem 1.05rem;
  border: 1px solid var(--rule);
  border-radius: 999px;
  background: transparent;
  color: var(--ink-dim);
  font-family: inherit;
  font-size: 0.82rem;
  cursor: pointer;
  transition: border-color 0.4s var(--ease), color 0.4s var(--ease),
    background 0.4s var(--ease);
}

.filter-bar button:hover {
  border-color: var(--rule-bright);
  color: var(--ink);
}

.filter-bar button.is-active {
  border-color: var(--brass);
  color: var(--brass);
  background: rgba(198, 161, 91, 0.08);
}

.index-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(15rem, 1fr));
  gap: 0.85rem;
}

.index-item {
  position: relative;
  display: grid;
  grid-template-columns: 3.1rem 1fr;
  gap: 0 0.95rem;
  align-items: center;
  padding: 0.95rem 1.1rem;
  border: 1px solid var(--rule);
  border-radius: 2px;
  overflow: hidden;
  transition: border-color 0.45s var(--ease), background 0.45s var(--ease),
    transform 0.5s var(--ease-out);
}

.index-item:hover {
  border-color: var(--rule-bright);
  background: var(--plate);
  transform: translateX(3px);
}

.index-item.is-filtered {
  display: none;
}

.index-item img {
  grid-row: span 2;
  width: 3.1rem;
  transition: transform 0.55s var(--ease-out);
}

.index-item:hover img {
  transform: scale(1.1) rotate(-4deg);
}

.index-item strong {
  font-family: var(--serif);
  font-size: 0.98rem;
  font-weight: 400;
  letter-spacing: 0.06em;
}

.index-item small {
  font-family: var(--mono);
  font-size: 0.63rem;
  letter-spacing: 0.1em;
  color: var(--ink-faint);
}

.index-more {
  margin-top: 1.75rem;
  padding-top: 1.4rem;
  border-top: 1px solid var(--rule);
  font-size: 0.86rem;
  color: var(--ink-dim);
}

.index-more b {
  color: var(--brass);
  font-weight: 400;
  font-family: var(--mono);
}

/* ─── ranked list ─── */

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

.rank li {
  display: grid;
  grid-template-columns: 2.6rem 1fr auto;
  gap: 0 1rem;
  align-items: center;
  padding: 1rem 0;
  border-top: 1px solid var(--rule);
  transition: border-color 0.45s var(--ease);
}

.rank li:hover {
  border-top-color: var(--brass-dim);
}

.rank__no {
  font-family: var(--mono);
  font-size: 0.95rem;
  color: var(--brass);
  font-variant-numeric: tabular-nums;
}

.rank__name {
  font-family: var(--serif);
  font-size: 1rem;
  letter-spacing: 0.06em;
}

.rank__meta {
  font-family: var(--mono);
  font-size: 0.68rem;
  color: var(--ink-faint);
  letter-spacing: 0.08em;
}

/* ─── ladder (growth) ─── */

.ladder {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 0.85rem;
}

.rung {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.7rem;
  padding: 1.6rem 0.6rem 1.3rem;
  border: 1px solid var(--rule);
  border-radius: 2px;
  text-align: center;
  transition: border-color 0.5s var(--ease), background 0.5s var(--ease);
}

.rung:hover,
.rung.is-current {
  border-color: var(--brass-dim);
  background: var(--plate);
}

.rung img {
  width: 3.4rem;
  filter: saturate(0.5) brightness(0.75);
  transition: filter 0.55s var(--ease), transform 0.6s var(--ease-out);
}

.rung:hover img,
.rung.is-current img {
  filter: none;
  transform: translateY(-4px) scale(1.06);
}

.rung strong {
  font-family: var(--serif);
  font-size: 0.95rem;
  font-weight: 400;
  letter-spacing: 0.12em;
}

.rung span {
  font-family: var(--mono);
  font-size: 0.66rem;
  letter-spacing: 0.1em;
  color: var(--ink-faint);
  font-variant-numeric: tabular-nums;
}

.rung.is-current span {
  color: var(--brass);
}

/* ─── ledger (growth tasks) ─── */

.ledger {
  border-top: 1px solid var(--rule);
}

.ledger-row {
  display: grid;
  grid-template-columns: 1.6rem 1fr auto;
  gap: 0 1.1rem;
  align-items: center;
  padding: 1.15rem 0;
  border-bottom: 1px solid var(--rule);
  transition: background 0.45s var(--ease);
}

.ledger-row:hover {
  background: rgba(20, 28, 54, 0.4);
}

.ledger-row__mark {
  width: 1.15rem;
  height: 1.15rem;
  border: 1px solid var(--rule-bright);
  border-radius: 50%;
  display: grid;
  place-items: center;
  font-size: 0.6rem;
  color: var(--ink-faint);
}

.ledger-row.is-done .ledger-row__mark {
  border-color: var(--brass);
  background: var(--brass);
  color: var(--void);
}

.ledger-row strong {
  display: block;
  font-size: 0.94rem;
  font-weight: 400;
  color: var(--ink);
}

.ledger-row small {
  font-size: 0.78rem;
  color: var(--ink-faint);
}

.ledger-row__value {
  font-family: var(--mono);
  font-size: 0.82rem;
  color: var(--brass);
  font-variant-numeric: tabular-nums;
}

.ledger-row.is-done .ledger-row__value {
  color: var(--ink-faint);
}

/* ─── tiles (archive) ─── */

.tiles {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(13rem, 1fr));
  gap: 1rem;
}

.tile {
  position: relative;
  padding: 1.5rem 1.4rem 1.35rem;
  border: 1px solid var(--rule);
  border-radius: 2px;
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
  overflow: hidden;
  transition: border-color 0.45s var(--ease), transform 0.55s var(--ease-out),
    background 0.5s var(--ease);
}

.tile:hover {
  border-color: var(--rule-bright);
  background: var(--plate);
  transform: translateY(-4px);
}

.tile__no {
  font-family: var(--mono);
  font-size: 0.6rem;
  letter-spacing: 0.18em;
  color: var(--brass);
}

.tile strong {
  font-family: var(--serif);
  font-size: 1.05rem;
  font-weight: 400;
  letter-spacing: 0.1em;
}

.tile p {
  margin: 0;
  font-size: 0.82rem;
  color: var(--ink-dim);
  line-height: 1.7;
}

.tile__badge {
  position: absolute;
  top: 1.2rem;
  right: 1.3rem;
  font-family: var(--mono);
  font-size: 0.68rem;
  color: var(--ink-faint);
  font-variant-numeric: tabular-nums;
}

/* ─── boundary table ─── */

.boundary {
  border-top: 1px solid var(--rule);
}

.boundary__row {
  display: grid;
  grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr);
  gap: 0.3rem 1.5rem;
  padding: 1.2rem 0;
  border-bottom: 1px solid var(--rule);
  align-items: baseline;
}

.boundary__row strong {
  font-family: var(--serif);
  font-size: 1rem;
  font-weight: 400;
  letter-spacing: 0.08em;
}

.boundary__row span {
  font-size: 0.86rem;
  color: var(--ink-dim);
  line-height: 1.75;
}

/* ─── quote / editorial ─── */

.quote-card {
  position: relative;
  padding: clamp(2rem, 5vw, 3rem);
  border: 1px solid var(--rule);
  border-radius: 3px;
  background: linear-gradient(160deg, var(--plate), rgba(14, 20, 40, 0.2));
  overflow: hidden;
}

.quote-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 1px;
  background: linear-gradient(90deg, var(--brass), transparent 60%);
}

.quote-card blockquote {
  margin: 1.1rem 0 1.4rem;
  font-family: var(--serif);
  font-size: clamp(1.15rem, 2.3vw, 1.55rem);
  line-height: 1.75;
  letter-spacing: 0.05em;
  color: var(--ink);
}

.quote-card cite {
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.16em;
  color: var(--ink-faint);
  font-style: normal;
}

/* ─── two-column split ─── */

.split {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: clamp(2rem, 5vw, 4rem);
  align-items: start;
}

.split--narrow-left {
  grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr);
}

/* ─── inner responsive ─── */

@media (max-width: 1024px) {
  .page-hero__inner,
  .split,
  .split--narrow-left {
    grid-template-columns: 1fr;
  }

  .page-hero__aside {
    flex-direction: row;
    flex-wrap: wrap;
    align-items: center;
    gap: 1.5rem 2.5rem;
  }

  .page-hero__orb {
    margin-bottom: 0;
  }

  .body-entry {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  .body-entry:nth-of-type(even) .body-entry__art {
    order: 0;
  }

  .body-entry__art img {
    width: min(9rem, 45%);
  }

  .strip {
    grid-template-columns: repeat(6, minmax(0, 1fr));
    row-gap: 1rem;
  }

  .ladder {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (max-width: 560px) {
  .strip {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .ladder {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .index-grid {
    grid-template-columns: 1fr;
  }

  .spec {
    grid-template-columns: 1fr;
  }

  .boundary__row {
    grid-template-columns: 1fr;
  }
}

/* ═══════════════════════════════════════════════════════════
   Atlas plate — the collection loop.
   ═══════════════════════════════════════════════════════════ */

/* ─── the four-step loop ─── */

.loop {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1rem;
  counter-reset: loop;
}

.loop__step {
  position: relative;
  counter-increment: loop;
  padding: 1.7rem 1.35rem 1.5rem;
  border: 1px solid var(--rule);
  border-radius: 2px;
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
  transition: border-color 0.5s var(--ease), background 0.5s var(--ease);
}

.loop__step:hover {
  border-color: var(--brass-dim);
  background: var(--plate);
}

.loop__step::before {
  content: "0" counter(loop);
  font-family: var(--mono);
  font-size: 0.64rem;
  letter-spacing: 0.2em;
  color: var(--brass);
}

/* the connecting arrow between steps */
.loop__step:not(:last-child)::after {
  content: "→";
  position: absolute;
  top: 50%;
  right: -0.85rem;
  transform: translateY(-50%);
  font-size: 0.8rem;
  color: var(--rule-bright);
  z-index: 2;
}

.loop__step strong {
  font-family: var(--serif);
  font-size: 1.05rem;
  font-weight: 400;
  letter-spacing: 0.1em;
}

.loop__step p {
  margin: 0;
  font-size: 0.82rem;
  color: var(--ink-dim);
  line-height: 1.7;
}

/* ─── collection wall ─── */

.wall {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(7.5rem, 1fr));
  gap: 0.85rem;
}

.card {
  position: relative;
  aspect-ratio: 1;
  display: grid;
  place-items: center;
  padding: 0.7rem;
  border: 1px solid var(--rule);
  border-radius: 3px;
  overflow: hidden;
  transition: border-color 0.5s var(--ease), transform 0.55s var(--ease-out),
    background 0.5s var(--ease);
}

.card::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 50% 45%, var(--tone, rgba(198, 161, 91, 0.16)), transparent 70%);
  opacity: 0;
  transition: opacity 0.55s var(--ease);
}

.card:hover {
  border-color: var(--brass-dim);
  transform: translateY(-5px);
  background: var(--plate);
}

.card:hover::before {
  opacity: 1;
}

.card img {
  position: relative;
  width: 78%;
  transition: transform 0.6s var(--ease-out);
}

.card:hover img {
  transform: scale(1.08);
}

.card figcaption {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 0.45rem 0.5rem;
  font-family: var(--mono);
  font-size: 0.6rem;
  letter-spacing: 0.08em;
  text-align: center;
  color: var(--ink-dim);
  background: linear-gradient(180deg, transparent, rgba(7, 11, 24, 0.9) 45%);
  opacity: 0;
  transform: translateY(6px);
  transition: opacity 0.45s var(--ease), transform 0.45s var(--ease-out);
}

.card:hover figcaption {
  opacity: 1;
  transform: none;
}

/* not yet collected */
.card--locked img {
  filter: brightness(0) saturate(0) invert(18%) sepia(12%) saturate(700%) hue-rotate(190deg);
  opacity: 0.5;
}

.card--locked {
  border-style: dashed;
}

.card--locked:hover {
  transform: none;
  border-color: var(--rule-bright);
}

.card--locked::after {
  content: "未点亮";
  position: absolute;
  bottom: 0.55rem;
  left: 50%;
  transform: translateX(-50%);
  font-family: var(--mono);
  font-size: 0.58rem;
  letter-spacing: 0.16em;
  color: var(--ink-faint);
}

/* ─── series table ─── */

.series {
  border-top: 1px solid var(--rule);
}

.series__row {
  display: grid;
  grid-template-columns: 1fr auto 7rem;
  gap: 0 1.25rem;
  align-items: center;
  padding: 0.95rem 0;
  border-bottom: 1px solid var(--rule);
  transition: background 0.4s var(--ease);
}

.series__row:hover {
  background: rgba(20, 28, 54, 0.35);
}

.series__name {
  font-size: 0.94rem;
  color: var(--ink);
}

.series__kind {
  font-family: var(--mono);
  font-size: 0.63rem;
  letter-spacing: 0.12em;
  color: var(--ink-faint);
}

.series__bar {
  position: relative;
  height: 3px;
  background: var(--rule);
  border-radius: 2px;
  overflow: hidden;
}

.series__bar i {
  position: absolute;
  inset: 0 auto 0 0;
  width: var(--pct, 50%);
  background: linear-gradient(90deg, var(--brass-dim), var(--brass));
  border-radius: 2px;
  transform-origin: left;
  transform: scaleX(0);
  transition: transform 1.1s var(--ease-out);
}

.series__row.is-visible .series__bar i,
.reveal.is-visible .series__bar i {
  transform: scaleX(1);
}

.series__count {
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--brass);
  font-variant-numeric: tabular-nums;
  text-align: right;
  min-width: 3.2rem;
}

/* ─── big stat ─── */

.stat-band {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(10rem, 1fr));
  gap: 1px;
  background: var(--rule);
  border: 1px solid var(--rule);
  border-radius: 2px;
  overflow: hidden;
}

.stat-band div {
  background: var(--void);
  padding: 1.5rem 1.4rem;
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
  transition: background 0.5s var(--ease);
}

.stat-band div:hover {
  background: var(--plate);
}

.stat-band b {
  font-family: var(--serif);
  font-size: clamp(1.7rem, 3.4vw, 2.4rem);
  font-weight: 400;
  line-height: 1.1;
  color: var(--ink);
  font-variant-numeric: tabular-nums;
}

.stat-band small {
  font-family: var(--mono);
  font-size: 0.62rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-faint);
}

@media (max-width: 1024px) {
  .loop {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .loop__step:nth-child(2)::after {
    display: none;
  }
}

@media (max-width: 560px) {
  .loop {
    grid-template-columns: 1fr;
  }

  .loop__step::after {
    display: none !important;
  }

  .wall {
    grid-template-columns: repeat(auto-fill, minmax(5.5rem, 1fr));
    gap: 0.6rem;
  }

  .series__row {
    grid-template-columns: 1fr 4.5rem;
    row-gap: 0.5rem;
  }

  .series__bar {
    grid-column: 1 / -1;
    order: 3;
  }
}