:root {
  --meta-paper: #efece3;
  --meta-surface: #e5dfd2;
  --meta-ink: #191814;
  --meta-muted: #736d62;
  --meta-line: rgba(32, 28, 22, 0.15);
  --meta-accent: #74558d;
  --meta-accent-soft: rgba(116, 85, 141, 0.14);
  --meta-gold: #9b7538;
  --meta-font: "霞骛文楷等宽GB", "霞骛文楷等宽 GB", "霞鹜文楷等宽GB", "霞鹜文楷等宽 GB", "LXGW WenKai Mono GB", "LXGW WenKai Mono", monospace;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body.meta-library {
  min-width: 320px;
  min-height: 100vh;
  margin: 0;
  background:
    radial-gradient(circle at 50% -8%, var(--meta-accent-soft), transparent 34rem),
    var(--meta-paper);
  color: var(--meta-ink);
  transition: background-color 220ms ease, color 220ms ease;
}

.meta-library,
.meta-library * {
  font-family: var(--meta-font) !important;
}

.meta-library button,
.meta-library input,
.meta-library select {
  font: inherit;
}

.meta-library button {
  color: inherit;
}

[hidden] {
  display: none !important;
}

.meta-app-header {
  position: sticky;
  z-index: 100;
  top: 0;
  display: flex;
  min-height: 56px;
  align-items: center;
  justify-content: space-between;
  padding: 0 clamp(18px, 3.2vw, 52px);
  border-bottom: 1px solid var(--meta-line);
  background: color-mix(in srgb, var(--meta-paper) 91%, transparent);
  backdrop-filter: blur(18px);
  transition: transform 280ms cubic-bezier(0.22, 0.76, 0.22, 1);
}

.meta-app-header.is-hidden {
  transform: translateY(-110%);
}

.meta-brand,
.meta-nav button,
.meta-nav summary,
.meta-theme {
  border: 0;
  background: none;
  cursor: pointer;
}

.meta-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 0;
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.meta-brand-seal {
  display: grid;
  width: 32px;
  height: 32px;
  place-items: center;
  border: 1px solid currentColor;
  border-radius: 50%;
  font-size: 16px;
}

.meta-nav {
  display: flex;
  align-items: center;
  gap: clamp(10px, 2vw, 28px);
}

.meta-nav-link,
.meta-theme {
  position: relative;
  padding: 7px 2px;
  color: var(--meta-muted);
  font-size: 13px;
  white-space: nowrap;
}

.meta-nav-link::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: 2px;
  left: 0;
  height: 1px;
  background: currentColor;
  transform: scaleX(0);
  transition: transform 180ms ease;
}

.meta-nav-link:hover,
.meta-nav-link.is-active,
.meta-theme:hover {
  color: var(--meta-ink);
}

.meta-nav-link.is-active::after {
  transform: scaleX(1);
}

.meta-theme {
  display: grid;
  width: 30px;
  height: 30px;
  place-items: center;
  padding: 0;
  border: 1px solid var(--meta-line);
  border-radius: 50%;
  font-size: 15px;
}

.meta-nav-more {
  position: relative;
  display: inline-flex;
  align-items: center;
}

.meta-nav-trigger {
  position: relative;
}

.meta-nav-trigger::after {
  content: "";
  position: absolute;
  right: .12em;
  bottom: -4px;
  left: 0;
  height: 1px;
  background: var(--meta-accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 240ms ease;
}

.meta-nav-more:hover .meta-nav-trigger::after,
.meta-nav-more:focus-within .meta-nav-trigger::after {
  transform: scaleX(1);
}

.meta-dropdown {
  position: absolute;
  z-index: 120;
  top: calc(100% + 12px);
  left: 50%;
  display: flex;
  width: max-content;
  min-width: 0;
  padding: 9px 10px;
  flex-direction: column;
  gap: 7px;
  border: 1px solid var(--meta-line);
  background: var(--meta-paper);
  box-shadow: 0 16px 38px rgba(20, 15, 10, 0.18);
  opacity: 0;
  visibility: hidden;
  transform: translateX(-50%) translateY(8px);
  transition: opacity 240ms ease, transform 240ms ease, visibility 240ms ease;
}

.meta-nav-more:hover .meta-dropdown,
.meta-nav-more:focus-within .meta-dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}

.meta-dropdown a {
  display: block;
  padding: 2px 1px;
  border-bottom: 1px solid transparent;
  color: var(--meta-muted);
  font-size: 12px;
  text-decoration: none;
  white-space: nowrap;
}

.meta-dropdown a[aria-current="page"],
.meta-dropdown a:hover {
  border-bottom-color: var(--meta-accent);
  color: var(--meta-ink);
}

.meta-main {
  min-height: calc(100vh - 56px);
}

.meta-view {
  animation: meta-view-in 420ms ease both;
}

@keyframes meta-view-in {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

.meta-hero {
  position: relative;
  min-height: calc(100svh - 56px);
  overflow: hidden;
  color: #efe9df;
  background: #0b0b0d;
}

.meta-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(circle at 76% 42%, rgba(133, 92, 156, 0.24), transparent 28rem),
    radial-gradient(circle at 20% 72%, rgba(151, 111, 49, 0.15), transparent 25rem),
    linear-gradient(125deg, #090a0b, #151018 55%, #080909);
}

.bazi-library {
  --meta-accent: #8b6640;
  --meta-accent-soft: rgba(139, 102, 64, 0.14);
}

.bazi-library .meta-hero::before {
  background:
    radial-gradient(circle at 74% 44%, rgba(133, 91, 43, 0.22), transparent 29rem),
    radial-gradient(circle at 20% 72%, rgba(66, 105, 75, 0.14), transparent 25rem),
    linear-gradient(125deg, #090b09, #14110d 55%, #080909);
}

.meta-hero-shell {
  position: relative;
  z-index: 2;
  display: grid;
  width: min(1500px, calc(100% - 72px));
  min-height: calc(100svh - 56px);
  align-items: center;
  grid-template-columns: minmax(350px, 0.8fr) minmax(610px, 1.2fr);
  gap: clamp(45px, 7vw, 110px);
  margin: 0 auto;
  padding: 65px 0;
}

.meta-hero-copy {
  max-width: 600px;
}

.meta-kicker,
.section-kicker {
  display: block;
  margin-bottom: 20px;
  color: #b28ac8;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.28em;
}

.bazi-library .meta-kicker,
.bazi-library .section-kicker {
  color: #bb8a56;
}

.meta-hero-copy h1 {
  margin: 0;
  font-size: clamp(3.5rem, 6.4vw, 7.4rem);
  font-weight: 500;
  line-height: 1.03;
  letter-spacing: -0.08em;
}

.meta-hero-copy h1 em {
  display: block;
  margin-top: 10px;
  color: #c39cd5;
  font-size: 0.48em;
  font-style: normal;
  letter-spacing: 0.08em;
}

.bazi-library .meta-hero-copy h1 em {
  color: #d1a06d;
}

.meta-hero-copy p {
  max-width: 41em;
  margin: 30px 0 0;
  color: #9d969e;
  font-size: 14px;
  line-height: 2;
}

.meta-hero-stats {
  display: flex;
  margin: 40px 0 0;
  padding: 18px 0;
  border-top: 1px solid rgba(230, 216, 235, 0.14);
  border-bottom: 1px solid rgba(230, 216, 235, 0.14);
}

.meta-hero-stats div {
  flex: 1;
  padding: 0 18px;
  border-right: 1px solid rgba(230, 216, 235, 0.12);
}

.meta-hero-stats div:first-child {
  padding-left: 0;
}

.meta-hero-stats div:last-child {
  border-right: 0;
}

.meta-hero-stats b,
.meta-hero-stats small {
  display: block;
}

.meta-hero-stats b {
  color: #d9c3e5;
  font-size: 24px;
  font-weight: 500;
}

.bazi-library .meta-hero-stats b {
  color: #d6b07f;
}

.meta-hero-stats small {
  margin-top: 4px;
  color: #776f79;
  font-size: 9px;
  letter-spacing: 0.18em;
}

.meta-hero-action {
  display: inline-flex;
  min-height: 42px;
  align-items: center;
  margin-top: 34px;
  padding: 0 20px;
  border: 1px solid rgba(202, 166, 218, 0.34);
  border-radius: 999px;
  background: rgba(12, 10, 14, 0.35);
  color: #d1bfd8;
  cursor: pointer;
  font-size: 11px;
  letter-spacing: 0.16em;
}

.bazi-library .meta-hero-action {
  border-color: rgba(208, 161, 105, 0.38);
  color: #d4b58d;
}

/* Ziwei plate */
.ziwei-chart-wrap {
  position: relative;
  display: grid;
  width: min(100%, 740px);
  aspect-ratio: 1;
  place-items: center;
  justify-self: end;
}

.ziwei-chart-wrap::before {
  content: "";
  position: absolute;
  inset: 6%;
  border: 1px solid rgba(193, 146, 215, 0.25);
  border-radius: 50%;
  box-shadow: 0 0 0 24px rgba(164, 110, 190, 0.025), 0 0 80px rgba(116, 74, 139, 0.19);
  animation: meta-orbit 34s linear infinite;
}

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

.ziwei-chart {
  position: relative;
  display: grid;
  width: 82%;
  aspect-ratio: 1;
  grid-template-columns: repeat(4, 1fr);
  grid-template-rows: repeat(4, 1fr);
  border: 1px solid rgba(211, 176, 226, 0.42);
  background: rgba(10, 8, 12, 0.64);
  box-shadow: 24px 34px 60px rgba(0, 0, 0, 0.48);
  transform: rotateX(5deg) rotateZ(-1.5deg);
}

.chart-palace {
  position: relative;
  display: grid;
  align-content: center;
  justify-items: center;
  padding: 8px;
  border-right: 1px solid rgba(211, 176, 226, 0.2);
  border-bottom: 1px solid rgba(211, 176, 226, 0.2);
  color: #bda8c6;
  text-align: center;
}

.chart-palace b {
  font-size: clamp(12px, 1.3vw, 19px);
  font-weight: 500;
  letter-spacing: 0.08em;
}

.chart-palace small {
  margin-top: 6px;
  color: #6e626f;
  font-size: 8px;
}

.chart-palace.is-life {
  background: radial-gradient(circle, rgba(137, 79, 164, 0.25), transparent 72%);
  color: #e0c3ec;
}

.chart-core {
  position: relative;
  display: grid;
  grid-column: 2 / 4;
  grid-row: 2 / 4;
  place-items: center;
  overflow: hidden;
  border-right: 1px solid rgba(211, 176, 226, 0.2);
  border-bottom: 1px solid rgba(211, 176, 226, 0.2);
  background:
    radial-gradient(circle, rgba(142, 90, 166, 0.2), transparent 46%),
    #0b090d;
}

.chart-core::before,
.chart-core::after {
  content: "";
  position: absolute;
  border: 1px solid rgba(203, 160, 222, 0.22);
  border-radius: 50%;
  inset: 14%;
  animation: meta-orbit 24s linear infinite;
}

.chart-core::after {
  border-style: dashed;
  inset: 27%;
  animation-direction: reverse;
  animation-duration: 18s;
}

.chart-core span {
  position: relative;
  z-index: 2;
  color: #dfc2ec;
  font-size: clamp(1.8rem, 4vw, 4.2rem);
}

.chart-core small {
  position: absolute;
  z-index: 2;
  bottom: 20%;
  color: #766879;
  font-size: 9px;
  letter-spacing: 0.22em;
}

.chart-starfield {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    radial-gradient(circle, rgba(225, 199, 236, 0.8) 0 0.7px, transparent 1px),
    radial-gradient(circle, rgba(163, 124, 182, 0.55) 0 0.6px, transparent 0.9px);
  background-position: 0 0, 11px 17px;
  background-size: 33px 37px, 47px 43px;
  mask-image: radial-gradient(circle, #000, transparent 72%);
  opacity: 0.52;
}

/* Bazi plate */
.pillar-stage {
  position: relative;
  width: min(100%, 760px);
  min-height: 650px;
  justify-self: end;
}

.pillar-stage::before {
  content: "";
  position: absolute;
  right: 5%;
  bottom: 4%;
  left: 5%;
  height: 35%;
  border-radius: 50%;
  background: rgba(94, 58, 25, 0.22);
  filter: blur(45px);
}

.pillar-row {
  position: relative;
  z-index: 2;
  display: grid;
  min-height: 600px;
  align-items: center;
  grid-template-columns: repeat(4, 1fr);
  gap: clamp(10px, 2vw, 24px);
  perspective: 1100px;
}

.pillar {
  position: relative;
  display: grid;
  min-height: 430px;
  align-content: center;
  justify-items: center;
  padding: 44px 18px 30px;
  border: 1px solid rgba(196, 148, 91, 0.3);
  background:
    linear-gradient(90deg, rgba(255, 255, 255, 0.04), transparent 18% 78%, rgba(0, 0, 0, 0.33)),
    repeating-linear-gradient(92deg, #2d2115 0 7px, #22180f 8px 14px, #362619 15px 22px);
  box-shadow: 14px 26px 32px rgba(0, 0, 0, 0.42);
  transform: rotateY(calc(var(--pillar-i) * -1.5deg)) translateY(calc(var(--pillar-i) * 9px));
}

.pillar::before,
.pillar::after {
  content: "";
  position: absolute;
  right: -6px;
  left: -6px;
  height: 13px;
  border: 1px solid rgba(197, 151, 88, 0.48);
  background: #1a120b;
}

.pillar::before { top: 12px; }
.pillar::after { bottom: 12px; }

.pillar-label {
  position: absolute;
  top: 34px;
  color: #8d7358;
  font-size: 9px;
  letter-spacing: 0.2em;
}

.pillar-stem,
.pillar-branch {
  display: grid;
  width: 78px;
  height: 78px;
  place-items: center;
  border: 1px solid rgba(211, 167, 107, 0.48);
  color: #d6b27f;
  font-size: 43px;
}

.pillar-branch {
  margin-top: 20px;
  border-radius: 50%;
}

.pillar-ten-god {
  margin-top: 30px;
  color: #887461;
  font-size: 10px;
  letter-spacing: 0.18em;
}

.five-orbit {
  position: absolute;
  z-index: 1;
  top: 50%;
  left: 50%;
  width: 530px;
  height: 530px;
  border: 1px solid rgba(177, 130, 77, 0.13);
  border-radius: 50%;
  transform: translate(-50%, -50%);
  animation: meta-orbit 48s linear infinite;
}

.five-orbit span {
  position: absolute;
  display: grid;
  width: 46px;
  height: 46px;
  place-items: center;
  border: 1px solid rgba(191, 144, 83, 0.25);
  border-radius: 50%;
  background: #0c0c09;
  color: #a37d50;
  font-size: 16px;
}

.five-orbit span:nth-child(1) { top: -23px; left: calc(50% - 23px); }
.five-orbit span:nth-child(2) { top: 27%; right: -23px; }
.five-orbit span:nth-child(3) { right: 11%; bottom: 3%; }
.five-orbit span:nth-child(4) { bottom: 3%; left: 11%; }
.five-orbit span:nth-child(5) { top: 27%; left: -23px; }

/* Home foundations */
.foundation-section {
  padding: 105px 0 120px;
  border-bottom: 1px solid var(--meta-line);
  background: color-mix(in srgb, var(--meta-surface) 50%, var(--meta-paper));
}

.foundation-shell,
.catalogue-shell,
.lesson-shell {
  width: min(1480px, calc(100% - 72px));
  margin: 0 auto;
}

.section-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 45px;
}

.section-heading h2 {
  max-width: 730px;
  margin: 0;
  font-size: clamp(2rem, 4vw, 4.2rem);
  font-weight: 500;
  line-height: 1.18;
  letter-spacing: -0.05em;
}

.section-heading p {
  max-width: 36em;
  margin: 0 0 7px;
  color: var(--meta-muted);
  font-size: 12px;
  line-height: 1.9;
}

.foundation-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  margin-top: 58px;
}

.foundation-card {
  position: relative;
  min-height: 270px;
  padding: 36px;
  overflow: hidden;
  border: 1px solid var(--meta-line);
  background: color-mix(in srgb, var(--meta-paper) 74%, transparent);
}

.foundation-card::after {
  content: attr(data-mark);
  position: absolute;
  right: 18px;
  bottom: -26px;
  color: var(--meta-accent-soft);
  font-size: 9rem;
  line-height: 1;
}

.foundation-card span,
.foundation-card h3,
.foundation-card p {
  position: relative;
  z-index: 2;
}

.foundation-card span {
  color: var(--meta-accent);
  font-size: 10px;
  letter-spacing: 0.18em;
}

.foundation-card h3 {
  margin: 58px 0 0;
  font-size: 24px;
  font-weight: 500;
}

.foundation-card p {
  max-width: 32em;
  margin: 16px 0 0;
  color: var(--meta-muted);
  font-size: 11px;
  line-height: 1.8;
}

/* Catalogue */
.catalogue-view {
  min-height: calc(100vh - 56px);
  padding: 62px 0 100px;
}

.catalogue-header {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 40px;
}

.catalogue-title span {
  color: var(--meta-accent);
  font-size: 10px;
  letter-spacing: 0.22em;
}

.catalogue-title h1 {
  margin: 12px 0 0;
  font-size: clamp(2.5rem, 5vw, 5.8rem);
  font-weight: 500;
  letter-spacing: -0.06em;
}

.catalogue-title p {
  max-width: 48em;
  margin: 18px 0 0;
  color: var(--meta-muted);
  font-size: 12px;
  line-height: 1.8;
}

.catalogue-tools {
  display: flex;
  align-items: center;
  gap: 12px;
}

.catalogue-search {
  width: min(300px, 34vw);
  padding: 10px 2px;
  border: 0;
  border-bottom: 1px solid color-mix(in srgb, var(--meta-ink) 38%, transparent);
  outline: 0;
  background: transparent;
  color: var(--meta-ink);
  font-size: 12px;
}

.catalogue-reset {
  min-height: 36px;
  padding: 0 15px;
  border: 1px solid var(--meta-line);
  border-radius: 999px;
  background: transparent;
  cursor: pointer;
  font-size: 11px;
}

.catalogue-count {
  min-width: 74px;
  margin: 0;
  color: var(--meta-muted);
  font-size: 10px;
  text-align: right;
}

.meta-card-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 26px 20px;
  margin-top: 54px;
}

.meta-card-wrap[hidden] {
  display: none;
}

.meta-card {
  position: relative;
  aspect-ratio: 0.72;
  cursor: pointer;
  outline: none;
  perspective: 1200px;
}

.meta-card-inner {
  position: absolute;
  inset: 0;
  transform-style: preserve-3d;
  transition: transform 660ms cubic-bezier(0.2, 0.72, 0.2, 1);
}

.meta-card.is-flipped .meta-card-inner {
  transform: rotateY(180deg);
}

.meta-card-face {
  position: absolute;
  display: flex;
  inset: 0;
  flex-direction: column;
  padding: 28px;
  overflow: hidden;
  border: 1px solid color-mix(in srgb, var(--meta-accent) 33%, var(--meta-line));
  border-radius: 18px;
  backface-visibility: hidden;
}

.meta-card-front {
  justify-content: space-between;
  background:
    radial-gradient(circle at 74% 24%, var(--meta-accent-soft), transparent 35%),
    linear-gradient(145deg, color-mix(in srgb, var(--meta-surface) 62%, var(--meta-paper)), var(--meta-paper));
}

.meta-card-front::before,
.meta-card-front::after {
  content: "";
  position: absolute;
  border: 1px solid color-mix(in srgb, var(--meta-accent) 25%, transparent);
  border-radius: 50%;
  pointer-events: none;
}

.meta-card-front::before {
  width: 75%;
  aspect-ratio: 1;
  top: 20%;
  left: 12.5%;
}

.meta-card-front::after {
  width: 45%;
  aspect-ratio: 1;
  right: -10%;
  bottom: -6%;
}

.meta-card-index,
.meta-card-tag,
.meta-card-symbol,
.meta-card-name,
.meta-card-keywords {
  position: relative;
  z-index: 2;
}

.meta-card-index {
  color: var(--meta-muted);
  font-size: 10px;
  letter-spacing: 0.16em;
}

.meta-card-symbol {
  display: grid;
  width: 112px;
  height: 112px;
  place-items: center;
  align-self: center;
  border: 1px solid color-mix(in srgb, var(--meta-accent) 55%, transparent);
  border-radius: 50%;
  color: var(--meta-accent);
  font-size: 50px;
}

.meta-card-name {
  margin: 0;
  font-size: clamp(1.7rem, 2.7vw, 3.1rem);
  font-weight: 500;
  letter-spacing: 0.06em;
}

.meta-card-keywords {
  margin-top: 8px;
  color: var(--meta-muted);
  font-size: 10px;
  letter-spacing: 0.12em;
}

.meta-card-back {
  background: #151318;
  color: #eee6f0;
  transform: rotateY(180deg);
}

.bazi-library .meta-card-back {
  background: #17140f;
}

.meta-card-back .meta-card-tag {
  color: #a98bb7;
  font-size: 9px;
  letter-spacing: 0.2em;
}

.bazi-library .meta-card-back .meta-card-tag {
  color: #b58c61;
}

.meta-card-back h3 {
  margin: 22px 0 0;
  font-size: 29px;
  font-weight: 500;
}

.meta-card-back p {
  margin: 22px 0 0;
  color: #b6acb9;
  font-size: 11px;
  line-height: 1.9;
}

.meta-card-back dl {
  display: grid;
  gap: 12px;
  margin: auto 0 0;
}

.meta-card-back dl div {
  display: grid;
  grid-template-columns: 54px 1fr;
  gap: 12px;
  padding-top: 11px;
  border-top: 1px solid rgba(235, 222, 239, 0.12);
}

.meta-card-back dt {
  color: #887b8c;
  font-size: 9px;
}

.meta-card-back dd {
  margin: 0;
  font-size: 10px;
  line-height: 1.65;
}

.catalogue-empty {
  padding: 90px 0;
  color: var(--meta-muted);
  text-align: center;
}

/* Lessons */
.lesson-view {
  min-height: calc(100vh - 56px);
  padding: 78px 0 110px;
}

.lesson-hero {
  max-width: 850px;
}

.lesson-hero span {
  color: var(--meta-accent);
  font-size: 10px;
  letter-spacing: 0.22em;
}

.lesson-hero h1 {
  margin: 15px 0 0;
  font-size: clamp(2.7rem, 5vw, 6rem);
  font-weight: 500;
  letter-spacing: -0.06em;
}

.lesson-hero p {
  max-width: 50em;
  margin: 24px 0 0;
  color: var(--meta-muted);
  font-size: 13px;
  line-height: 2;
}

.lesson-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  margin-top: 66px;
}

.lesson-step {
  min-height: 270px;
  padding: 34px;
  border-top: 1px solid var(--meta-accent);
  background: color-mix(in srgb, var(--meta-surface) 65%, transparent);
}

.lesson-step > span {
  color: var(--meta-accent);
  font-size: 10px;
  letter-spacing: 0.17em;
}

.lesson-step h2 {
  margin: 45px 0 0;
  font-size: 24px;
  font-weight: 500;
}

.lesson-step p {
  margin: 17px 0 0;
  color: var(--meta-muted);
  font-size: 11px;
  line-height: 1.9;
}

.concept-table {
  margin-top: 78px;
  border-top: 1px solid var(--meta-line);
}

.concept-row {
  display: grid;
  grid-template-columns: 170px 220px 1fr;
  gap: 25px;
  padding: 24px 4px;
  border-bottom: 1px solid var(--meta-line);
}

.concept-row b {
  font-weight: 500;
}

.concept-row span,
.concept-row p {
  margin: 0;
  color: var(--meta-muted);
  font-size: 11px;
  line-height: 1.8;
}

.meta-note {
  margin-top: 60px;
  padding: 20px 24px;
  border: 1px solid var(--meta-line);
  color: var(--meta-muted);
  font-size: 10px;
  line-height: 1.8;
}

/* Dark */
.meta-library.is-dark {
  --meta-paper: #11100f;
  --meta-surface: #1b1816;
  --meta-ink: #eee7dc;
  --meta-muted: #a59b8d;
  --meta-line: rgba(238, 227, 211, 0.14);
  background:
    radial-gradient(circle at 50% -8%, var(--meta-accent-soft), transparent 34rem),
    #11100f;
}

@media (max-width: 1180px) {
  .meta-hero-shell {
    width: min(100% - 48px, 950px);
    grid-template-columns: 1fr;
    padding-top: 90px;
  }

  .meta-hero-copy {
    max-width: 760px;
    justify-self: center;
    text-align: center;
  }

  .meta-hero-stats {
    max-width: 550px;
    margin-right: auto;
    margin-left: auto;
  }

  .ziwei-chart-wrap,
  .pillar-stage {
    justify-self: center;
  }

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

@media (max-width: 900px) {
  .meta-app-header {
    padding: 0 18px;
  }

  .meta-nav {
    gap: 0 15px;
  }

  .foundation-shell,
  .catalogue-shell,
  .lesson-shell {
    width: min(100% - 38px, 760px);
  }

  .section-heading,
  .catalogue-header {
    display: block;
  }

  .section-heading p {
    margin-top: 24px;
  }

  .catalogue-tools {
    margin-top: 32px;
  }

  .catalogue-search {
    flex: 1;
    width: auto;
  }

  .foundation-grid,
  .lesson-grid {
    grid-template-columns: 1fr;
  }

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

  .concept-row {
    grid-template-columns: 120px 160px 1fr;
  }
}

@media (max-width: 680px) {
  .meta-app-header {
    min-height: 54px;
    padding: 0 12px;
  }

  .meta-brand > span:last-child {
    display: none;
  }

  .meta-brand-seal {
    width: 30px;
    height: 30px;
  }

  .meta-nav {
    gap: 0 9px;
  }

  .meta-nav-link {
    font-size: 11px;
  }

  .meta-nav-link[data-short] {
    font-size: 0;
  }

  .meta-nav-link[data-short]::before {
    content: attr(data-short);
    font-size: 11px;
  }

  .meta-theme {
    width: 28px;
    height: 28px;
  }

  .meta-dropdown {
    right: -40px;
    left: auto;
    transform: translateY(8px);
  }

  .meta-nav-more:hover .meta-dropdown,
  .meta-nav-more:focus-within .meta-dropdown {
    transform: translateY(0);
  }

  .meta-hero-shell {
    width: calc(100% - 28px);
    padding-top: 62px;
  }

  .meta-hero-copy h1 {
    font-size: clamp(3rem, 17vw, 5.3rem);
  }

  .meta-hero-copy p {
    font-size: 12px;
  }

  .meta-hero-stats div {
    padding: 0 9px;
  }

  .ziwei-chart-wrap {
    width: 100vw;
    margin-left: -14px;
  }

  .ziwei-chart {
    width: 92%;
  }

  .chart-palace {
    padding: 3px;
  }

  .pillar-stage {
    width: 100%;
    min-height: 530px;
  }

  .pillar-row {
    min-height: 500px;
    gap: 7px;
  }

  .pillar {
    min-height: 360px;
    padding: 36px 6px 24px;
  }

  .pillar-stem,
  .pillar-branch {
    width: 55px;
    height: 55px;
    font-size: 32px;
  }

  .five-orbit {
    width: 390px;
    height: 390px;
  }

  .foundation-section {
    padding: 75px 0 85px;
  }

  .foundation-shell,
  .catalogue-shell,
  .lesson-shell {
    width: calc(100% - 28px);
  }

  .section-heading h2 {
    font-size: 2.5rem;
  }

  .catalogue-view {
    padding-top: 42px;
  }

  .catalogue-tools {
    flex-wrap: wrap;
  }

  .catalogue-search {
    flex-basis: 100%;
  }

  .catalogue-count {
    margin-left: auto;
  }

  .meta-card-grid {
    grid-template-columns: 1fr;
    gap: 20px;
    margin-top: 40px;
  }

  .meta-card {
    aspect-ratio: 0.76;
  }

  .concept-row {
    grid-template-columns: 90px 1fr;
  }

  .concept-row p {
    grid-column: 1 / -1;
  }
}

@media (max-width: 420px) {
  .meta-app-header {
    padding: 0 9px;
  }

  .meta-nav {
    gap: 0 6px;
  }

  .meta-nav-link {
    font-size: 10px;
  }

  .meta-brand-seal {
    width: 28px;
    height: 28px;
    font-size: 14px;
  }

  .meta-theme {
    width: 26px;
    height: 26px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .ziwei-chart-wrap::before,
  .chart-core::before,
  .chart-core::after,
  .five-orbit {
    animation: none;
  }

  .meta-card-inner {
    transition-duration: 1ms;
  }
}