@font-face {
  font-family: "Source Han Serif SC";
  src: url("/assets/fonts/source-han-serif-sc-yibu.woff2") format("woff2");
  font-style: normal;
  font-weight: 200 900;
  font-display: swap;
}

.is-development-link {
  color: var(--muted, #68716c);
}

.development-link-status {
  display: inline-block;
  margin-left: 0.45em;
  color: #9a7831;
  font-family: Inter, "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 0.68em;
  font-weight: 650;
  letter-spacing: 0;
  vertical-align: 0.12em;
}

.development-hero {
  position: relative;
  min-height: min(720px, calc(100vh - 76px));
  display: grid;
  align-items: end;
  overflow: hidden;
  background: #23332f;
  color: #f8f6ee;
}

.development-hero-media,
.development-hero::after {
  position: absolute;
  inset: 0;
}

.development-hero-media {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.3;
  filter: saturate(0.5) contrast(0.88);
}

.development-hero::after {
  content: "";
  background: rgba(21, 36, 32, 0.62);
}

.development-hero-content {
  position: relative;
  z-index: 1;
  width: min(1180px, calc(100% - 40px));
  margin: 0 auto;
  padding: clamp(112px, 18vh, 210px) 0 clamp(64px, 10vh, 112px);
}

.development-hero .page-title {
  max-width: 820px;
  margin: 14px 0 20px;
}

.development-hero .lead {
  max-width: 650px;
  color: rgba(248, 246, 238, 0.82);
}

.development-hero .button-secondary {
  border-color: rgba(248, 246, 238, 0.5);
  color: #f8f6ee;
}

.development-hero .button-secondary:hover {
  background: rgba(248, 246, 238, 0.1);
}

@media (max-width: 680px) {
  .development-hero {
    min-height: calc(100svh - 64px);
  }

  .development-hero-content {
    width: min(100% - 28px, 1180px);
    padding-bottom: 54px;
  }
}

:root {
  color-scheme: light;
  --paper: #f7f6f2;
  --paper-strong: #fffef9;
  --paper-muted: #eeeee9;
  --ink: #1d2524;
  --ink-soft: #56605d;
  --line: #d9dad3;
  --line-strong: #b7bbb2;
  --jade: #315f55;
  --jade-soft: #dce9e3;
  --indigo: #253945;
  --gold: #a57b38;
  --gold-soft: #eee2c8;
  --vermilion: #b64b3a;
  --blue: #507c91;
  --shadow: 0 20px 48px rgba(29, 37, 36, 0.09);
  --serif: "Source Han Serif SC", "Noto Serif CJK SC", "Songti SC", SimSun, serif;
  --sans: Inter, "SF Pro Text", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  --max: 1240px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  background: var(--paper);
}

body {
  margin: 0;
  min-width: 320px;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  line-height: 1.65;
  letter-spacing: 0;
  text-rendering: optimizeLegibility;
}

body.nav-open {
  overflow: hidden;
}

button,
input,
a {
  font: inherit;
}

button,
a {
  -webkit-tap-highlight-color: transparent;
}

a {
  color: inherit;
}

img,
canvas {
  display: block;
  max-width: 100%;
}

button {
  color: inherit;
}

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

.skip-link {
  position: fixed;
  left: 16px;
  top: 12px;
  z-index: 100;
  padding: 9px 14px;
  background: var(--ink);
  color: #fff;
  text-decoration: none;
  transform: translateY(-160%);
}

.skip-link:focus {
  transform: translateY(0);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  border-bottom: 1px solid rgba(183, 187, 178, 0.72);
  background: rgba(247, 246, 242, 0.94);
  backdrop-filter: blur(18px);
}

.header-inner {
  width: min(var(--max), calc(100% - 40px));
  min-height: 72px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 190px minmax(0, 1fr) 190px;
  align-items: center;
  gap: 22px;
}

.brand-link {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  width: max-content;
  text-decoration: none;
}

.brand-mark {
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  border: 1px solid var(--jade);
  color: var(--jade);
  font-family: var(--serif);
  font-size: 17px;
  font-weight: 700;
}

.brand-word {
  font-family: var(--serif);
  font-size: 22px;
  font-weight: 700;
}

.brand-latin {
  margin-left: 1px;
  color: var(--ink-soft);
  font-size: 11px;
  line-height: 1;
}

.primary-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 30px;
}

.primary-nav a,
.header-action {
  position: relative;
  padding: 8px 1px;
  color: var(--ink-soft);
  font-size: 14px;
  text-decoration: none;
  white-space: nowrap;
}

.primary-nav a::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: 3px;
  left: 0;
  height: 1px;
  background: currentColor;
  transform: scaleX(0);
  transition: transform 360ms ease;
}

.primary-nav a:hover::after,
.primary-nav a[aria-current="page"]::after {
  transform: scaleX(1);
}

.primary-nav a[aria-current="page"] {
  color: var(--ink);
}

.header-tools {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 12px;
}

.header-product-menu {
  position: relative;
}

.header-product-menu summary {
  min-height: 38px;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 0 10px;
  border: 1px solid transparent;
  border-radius: 4px;
  color: var(--ink-soft);
  font-size: 13px;
  cursor: pointer;
  list-style: none;
}

.header-product-menu summary::-webkit-details-marker {
  display: none;
}

.header-product-menu summary::after {
  content: "⌄";
  color: var(--gold);
  transform: translateY(-1px);
}

.header-product-menu[open] summary,
.header-product-menu summary:hover {
  border-color: var(--line-strong);
  color: var(--ink);
}

.header-product-menu nav {
  position: absolute;
  top: calc(100% + 9px);
  right: 0;
  width: 208px;
  padding: 7px;
  border: 1px solid var(--line-strong);
  border-radius: 6px;
  background: rgba(255, 254, 249, 0.99);
  box-shadow: var(--shadow);
}

.header-product-menu nav a {
  min-height: 44px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 11px;
  border-radius: 4px;
  color: var(--ink-soft);
  font-size: 13px;
  text-decoration: none;
}

.header-product-menu nav a:hover,
.header-product-menu nav a[aria-current="page"] {
  background: var(--paper-deep);
  color: var(--ink);
}

.header-product-menu nav a small {
  color: var(--gold);
  font-size: 11px;
}

.header-action {
  color: var(--jade);
}

.nav-toggle {
  width: 42px;
  height: 42px;
  display: none;
  place-items: center;
  border: 1px solid var(--line-strong);
  border-radius: 4px;
  background: transparent;
  cursor: pointer;
}

.nav-toggle-lines,
.nav-toggle-lines::before,
.nav-toggle-lines::after {
  width: 18px;
  height: 1px;
  display: block;
  background: var(--ink);
  content: "";
  transition: transform 240ms ease;
}

.nav-toggle-lines::before {
  transform: translateY(-6px);
}

.nav-toggle-lines::after {
  transform: translateY(5px);
}

.nav-open .nav-toggle-lines {
  background: transparent;
}

.nav-open .nav-toggle-lines::before {
  transform: rotate(45deg);
}

.nav-open .nav-toggle-lines::after {
  transform: rotate(-45deg) translateY(-1px);
}

.page-shell,
.section-inner {
  width: min(var(--max), calc(100% - 40px));
  margin: 0 auto;
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--gold);
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
}

.display-title,
.section-title,
.page-title,
.product-title,
.detail-title {
  margin: 0;
  font-family: var(--serif);
  font-weight: 600;
  line-height: 1.16;
  letter-spacing: 0;
}

.display-title {
  font-size: clamp(64px, 9vw, 136px);
}

.page-title {
  font-size: clamp(45px, 6vw, 84px);
}

.section-title {
  font-size: clamp(34px, 4vw, 58px);
}

.product-title {
  font-size: clamp(42px, 6vw, 80px);
}

.lead {
  max-width: 650px;
  margin: 22px 0 0;
  color: var(--ink-soft);
  font-size: clamp(17px, 2vw, 22px);
}

.button-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 32px;
}

.button,
.button-secondary {
  min-height: 46px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: 1px solid var(--ink);
  border-radius: 4px;
  padding: 0 20px;
  background: var(--ink);
  color: #fff;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  transition: background-color 220ms ease, color 220ms ease, transform 220ms ease;
}

.button:hover,
.button-secondary:hover {
  transform: translateY(-2px);
}

.button-secondary {
  background: transparent;
  color: var(--ink);
}

.mother-hero {
  position: relative;
  min-height: min(820px, calc(100vh - 72px));
  overflow: hidden;
  border-bottom: 1px solid var(--line);
  background: var(--paper);
}

.mother-hero canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.mother-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background: rgba(247, 246, 242, 0.18);
  pointer-events: none;
}

.mother-hero-content {
  position: relative;
  z-index: 2;
  min-height: inherit;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: flex-start;
  padding: 92px 0 122px;
}

.mother-hero .display-title {
  max-width: 720px;
  color: var(--ink);
}

.hero-statement {
  max-width: 600px;
  margin: 28px 0 0;
  color: var(--ink-soft);
  font-family: var(--serif);
  font-size: clamp(22px, 3vw, 34px);
}

.hero-note {
  position: absolute;
  right: 0;
  bottom: 54px;
  display: grid;
  grid-template-columns: auto auto;
  gap: 26px;
  color: var(--ink-soft);
  font-size: 13px;
}

.hero-note strong {
  display: block;
  color: var(--ink);
  font-family: var(--serif);
  font-size: 21px;
}

.brand-principle {
  padding: 110px 0;
  border-bottom: 1px solid var(--line);
  background: var(--paper-strong);
}

.principle-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: 12vw;
  align-items: end;
}

.principle-copy {
  margin: 0;
  color: var(--ink-soft);
  font-size: 18px;
}

.product-stage {
  min-height: 650px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  border-bottom: 1px solid var(--line);
}

.product-stage-copy {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 100px max(40px, calc((100vw - var(--max)) / 2));
}

.product-stage-copy p:not(.eyebrow) {
  max-width: 500px;
  margin: 22px 0 0;
  color: var(--ink-soft);
  font-size: 18px;
}

.product-stage-visual {
  position: relative;
  min-height: 540px;
  overflow: hidden;
  background: var(--paper-muted);
}

.product-stage-visual canvas {
  width: 100%;
  height: 100%;
}

.zj-stage {
  background: var(--indigo);
  color: #f6f5ef;
}

.zj-stage .product-stage-copy p,
.zj-stage .eyebrow {
  color: #c9d3d4;
}

.zj-stage .button {
  border-color: #f6f5ef;
  background: #f6f5ef;
  color: var(--indigo);
}

.zj-stage .button-secondary {
  border-color: #d4dcda;
  color: #f6f5ef;
}

.product-shot {
  position: absolute;
  inset: 11% 0 11% 8%;
  width: 92%;
  height: 78%;
  border: 1px solid rgba(255, 255, 255, 0.2);
  background: #fff;
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.24);
  object-fit: cover;
  object-position: 28% top;
}

.liuyao-visual {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
}

.hex-orbit {
  position: relative;
  width: min(78%, 560px);
  aspect-ratio: 1;
  border: 1px solid var(--line-strong);
  border-radius: 50%;
}

.hex-orbit::before,
.hex-orbit::after {
  content: "";
  position: absolute;
  border: 1px solid var(--line);
  border-radius: 50%;
}

.hex-orbit::before {
  inset: 13%;
}

.hex-orbit::after {
  inset: 31%;
}

.hex-core {
  position: absolute;
  inset: 38%;
  display: grid;
  place-items: center;
  background: var(--ink);
  color: #fff;
  border-radius: 50%;
  font-family: var(--serif);
  font-size: 28px;
}

.orbit-label {
  position: absolute;
  left: 50%;
  top: 50%;
  width: 48px;
  text-align: center;
  color: var(--ink-soft);
  font-family: var(--serif);
  transform: translate(-50%, -50%) rotate(var(--angle)) translateY(-238px) rotate(calc(-1 * var(--angle)));
}

.page-hero {
  min-height: 560px;
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
  border-bottom: 1px solid var(--line);
}

.page-hero-copy {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 90px 7vw 90px max(20px, calc((100vw - var(--max)) / 2));
}

.page-hero-visual {
  position: relative;
  min-height: 560px;
  overflow: hidden;
  background: var(--paper-muted);
}

.liuyao-hero .page-hero-visual {
  background: #e9e6dc;
}

.zhaijing-hero {
  background: var(--indigo);
  color: #fff;
}

.zhaijing-hero .lead,
.zhaijing-hero .eyebrow {
  color: #c8d2d1;
}

.zhaijing-hero .page-hero-visual {
  background: #dce4e4;
}

.zhaijing-hero-shot {
  position: absolute;
  right: 0;
  bottom: 0;
  width: 94%;
  height: 88%;
  object-fit: cover;
  object-position: 34% top;
  box-shadow: -30px 30px 80px rgba(12, 29, 36, 0.22);
}

.content-section {
  padding: 104px 0;
  border-bottom: 1px solid var(--line);
}

.section-head {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 40px;
  margin-bottom: 44px;
}

.section-head p {
  max-width: 520px;
  margin: 0;
  color: var(--ink-soft);
}

.hex-toolbar {
  position: sticky;
  top: 72px;
  z-index: 20;
  display: grid;
  grid-template-columns: minmax(220px, 1fr) auto;
  gap: 12px;
  padding: 14px 0;
  background: var(--paper);
}

.search-field {
  min-height: 48px;
  border: 1px solid var(--line-strong);
  border-radius: 4px;
  padding: 0 16px;
  background: var(--paper-strong);
  color: var(--ink);
}

.visually-hidden {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  overflow: hidden !important;
  clip: rect(0 0 0 0) !important;
  clip-path: inset(50%) !important;
  white-space: nowrap !important;
}

.hex-count {
  min-width: 92px;
  display: grid;
  place-items: center;
  border: 1px solid var(--line);
  color: var(--ink-soft);
  font-size: 13px;
}

.hex-grid {
  display: grid;
  grid-template-columns: repeat(8, minmax(0, 1fr));
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}

.hex-card {
  min-height: 155px;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: space-between;
  border: 0;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  padding: 16px;
  background: transparent;
  text-align: left;
  cursor: pointer;
  transition: background-color 220ms ease, color 220ms ease;
}

.hex-card:hover {
  background: var(--paper-strong);
}

.hex-card-index {
  color: var(--ink-soft);
  font-size: 11px;
}

.hex-card-name {
  font-family: var(--serif);
  font-size: 30px;
}

.hex-card-symbol {
  color: var(--ink-soft);
  font-size: 12px;
}

.hex-empty {
  grid-column: 1 / -1;
  padding: 50px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  color: var(--ink-soft);
  text-align: center;
}

.hex-dialog {
  width: min(720px, calc(100% - 30px));
  max-height: calc(100vh - 40px);
  border: 1px solid var(--line-strong);
  border-radius: 6px;
  padding: 0;
  background: var(--paper-strong);
  color: var(--ink);
  box-shadow: var(--shadow);
}

.hex-dialog::backdrop {
  background: rgba(29, 37, 36, 0.48);
}

.dialog-inner {
  position: relative;
  overflow: auto;
  max-height: calc(100vh - 42px);
  padding: 34px;
}

.dialog-close {
  position: sticky;
  top: 0;
  float: right;
  width: 40px;
  height: 40px;
  border: 1px solid var(--line);
  border-radius: 50%;
  background: var(--paper-strong);
  font-size: 24px;
  cursor: pointer;
}

.detail-title {
  margin-top: 8px;
  font-size: 44px;
}

.detail-symbol {
  margin: 8px 0 24px;
  color: var(--gold);
}

.detail-section {
  padding: 22px 0;
  border-top: 1px solid var(--line);
}

.detail-section h3 {
  margin: 0 0 8px;
  font-family: var(--serif);
  font-size: 18px;
}

.detail-section p,
.detail-section li {
  color: var(--ink-soft);
}

.detail-section ol {
  margin: 0;
  padding-left: 22px;
}

.detail-section li + li {
  margin-top: 16px;
}

.detail-section li p {
  margin: 5px 0 0;
}

.layer-list,
.process-grid,
.evidence-grid,
.device-grid,
.about-grid {
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.layer-list {
  grid-template-columns: repeat(5, minmax(0, 1fr));
}

.layer-item,
.process-step,
.evidence-item,
.device-item,
.about-item {
  background: var(--paper-strong);
  padding: 28px;
}

.layer-index,
.process-index {
  color: var(--gold);
  font-size: 12px;
}

.layer-item h3,
.process-step h3,
.evidence-item h3,
.device-item h3,
.about-item h3 {
  margin: 24px 0 8px;
  font-family: var(--serif);
  font-size: 21px;
}

.layer-item p,
.process-step p,
.evidence-item p,
.device-item p,
.about-item p {
  margin: 0;
  color: var(--ink-soft);
}

.process-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

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

.evidence-item:first-child {
  grid-column: span 2;
}

.screenshot-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.screenshot-figure {
  margin: 0;
  border: 1px solid var(--line);
  background: var(--paper-strong);
}

.screenshot-figure img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  object-position: top;
}

.screenshot-figure figcaption {
  padding: 14px 16px;
  color: var(--ink-soft);
  font-size: 13px;
}

.device-hero,
.simple-hero {
  padding: 120px 0 84px;
  border-bottom: 1px solid var(--line);
}

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

.device-item .button {
  margin-top: 24px;
}

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

.account-status {
  max-width: 760px;
  margin-top: 40px;
  border: 1px solid var(--line-strong);
  padding: 30px;
  background: var(--paper-strong);
}

.account-status h2 {
  margin: 0 0 8px;
  font-family: var(--serif);
}

.account-status p {
  margin: 0;
  color: var(--ink-soft);
}

.legal-page {
  background: var(--paper);
}

.legal-shell {
  width: min(900px, calc(100% - 40px));
  margin: 0 auto;
  padding: 90px 0;
}

.legal-document {
  border-top: 1px solid var(--ink);
  border-bottom: 1px solid var(--line);
  padding: 46px 0 58px;
}

.legal-document > .brand {
  margin: 0 0 12px;
  color: var(--gold);
  font-size: 12px;
  font-weight: 700;
}

.legal-document h1,
.legal-document h2 {
  font-family: var(--serif);
  font-weight: 600;
}

.legal-document h1 {
  margin: 0;
  font-size: clamp(38px, 5vw, 64px);
}

.legal-document h2 {
  margin: 38px 0 10px;
  font-size: 22px;
}

.legal-document p,
.legal-document li {
  color: var(--ink-soft);
}

.legal-document .meta {
  margin: 10px 0 38px;
  color: var(--ink-soft);
  font-size: 13px;
}

.legal-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 42px;
}

.legal-actions a {
  min-height: 42px;
  display: inline-flex;
  align-items: center;
  border: 1px solid var(--ink);
  border-radius: 4px;
  padding: 0 16px;
  text-decoration: none;
}

.legal-page > .site-footer {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px 18px;
  padding: 26px 20px 34px;
  background: var(--ink);
}

.legal-page > .site-footer a,
.legal-page > .site-footer span {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  color: #aeb8b4;
  font-size: 12px;
  text-decoration: none;
}

.legal-page .beian-icon {
  width: 14px;
  height: 14px;
}

.app-bridge {
  min-height: calc(100vh - 72px);
  display: grid;
  place-items: center;
  padding: 60px 20px;
}

.app-bridge-inner {
  width: min(780px, 100%);
  display: grid;
  grid-template-columns: 120px minmax(0, 1fr);
  gap: 34px;
  align-items: start;
}

.bridge-mark {
  width: 120px;
  aspect-ratio: 1;
  display: grid;
  place-items: center;
  border: 1px solid var(--jade);
  color: var(--jade);
  font-family: var(--serif);
  font-size: 48px;
}

.bridge-note {
  color: var(--ink-soft);
}

.site-footer-v2 {
  padding: 54px 0 94px;
  background: var(--ink);
  color: #d7ddda;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr repeat(3, 1fr);
  gap: 40px;
}

.footer-brand {
  font-family: var(--serif);
  font-size: 28px;
}

.footer-grid h2 {
  margin: 0 0 14px;
  color: #fff;
  font-family: var(--serif);
  font-size: 15px;
}

.footer-grid a,
.footer-grid p {
  display: block;
  margin: 7px 0;
  color: #aeb8b4;
  font-size: 13px;
  text-decoration: none;
}

.footer-grid a:hover {
  color: #fff;
}

.footer-records {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
  margin-top: 38px;
  padding-top: 24px;
  border-top: 1px solid #3b4542;
}

.footer-records a,
.footer-records span {
  color: #929e9a;
  font-size: 12px;
  text-decoration: none;
}

.site-analytics-summary {
  position: fixed;
  right: 26px;
  bottom: 20px;
  z-index: 20;
  color: rgba(24, 38, 35, 0.58);
  font-family: Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 12.5px;
  line-height: 1.4;
  letter-spacing: 0;
  pointer-events: none;
}

.site-analytics-summary[hidden] {
  display: none !important;
}

[data-reveal] {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 650ms ease, transform 650ms ease;
}

[data-reveal].is-visible {
  opacity: 1;
  transform: translateY(0);
}

.academy-hero {
  width: min(100% - 48px, var(--max));
  min-height: 520px;
  margin: 0 auto;
  padding: 112px 0 86px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 0.72fr);
  align-items: center;
  gap: clamp(50px, 8vw, 130px);
}

.academy-hero h1,
.course-reader-head h1 {
  margin: 18px 0 28px;
  font-family: var(--font-serif);
  font-weight: 600;
  letter-spacing: 0;
  line-height: 1.12;
}

.academy-hero h1 {
  font-size: clamp(54px, 7vw, 104px);
}

.academy-hero-index {
  position: relative;
  aspect-ratio: 1;
  border: 1px solid rgba(39, 55, 52, 0.2);
  border-radius: 50%;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  place-items: center;
  color: var(--jade);
  font-family: var(--font-serif);
  font-size: clamp(32px, 4vw, 54px);
}

.academy-hero-index::before,
.academy-hero-index::after {
  content: "";
  position: absolute;
  background: rgba(39, 55, 52, 0.16);
}

.academy-hero-index::before {
  width: 1px;
  height: 100%;
}

.academy-hero-index::after {
  width: 100%;
  height: 1px;
}

.academy-catalog {
  width: min(100% - 48px, var(--max));
  margin: 0 auto;
  padding: 86px 0 140px;
  border-top: 1px solid var(--line);
}

.academy-entry-layers {
  width: min(100% - 48px, var(--max));
  margin: 0 auto 28px;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}

.academy-entry-layers article {
  min-height: 290px;
  padding: 38px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.2);
}

.academy-entry-layers h2 {
  margin: 0 0 28px;
  font-family: var(--font-serif);
  font-size: clamp(26px, 3vw, 38px);
  font-weight: 600;
}

.academy-problem-entry {
  grid-column: 1 / -1;
}

.academy-entry-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.academy-entry-tags a {
  min-height: 40px;
  display: inline-flex;
  align-items: center;
  padding: 0 13px;
  border: 1px solid var(--line-strong);
  border-radius: 4px;
  color: var(--ink-soft);
  font-size: 14px;
  text-decoration: none;
}

.academy-entry-tags a:hover {
  border-color: var(--jade);
  color: var(--jade);
}

.academy-problem-links {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}

.academy-problem-links a {
  min-height: 62px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 12px 16px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  color: var(--ink);
  font-size: 14px;
  text-decoration: none;
}

.academy-problem-links a:hover {
  background: var(--paper-deep);
}

.academy-problem-links span {
  color: var(--gold-deep);
}

.academy-toolbar {
  display: grid;
  grid-template-columns: 1fr minmax(300px, 440px);
  align-items: end;
  gap: 40px;
}

.academy-search input {
  width: 100%;
  min-height: 52px;
  padding: 0 18px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.62);
  color: var(--ink);
  font: inherit;
}

.academy-search input:focus {
  outline: 2px solid rgba(35, 85, 74, 0.26);
  outline-offset: 2px;
  border-color: var(--jade);
}

.category-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 40px 0 24px;
}

.category-strip button {
  min-height: 38px;
  padding: 0 14px;
  border: 1px solid var(--line);
  border-radius: 4px;
  background: transparent;
  color: var(--muted);
  font: inherit;
  cursor: pointer;
}

.category-strip button.is-active {
  border-color: var(--ink);
  background: var(--ink);
  color: var(--paper);
}

.academy-count,
.academy-no-results {
  color: var(--muted);
}

.academy-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  margin-top: 22px;
  background: transparent;
}

.course-card {
  position: relative;
  min-height: 260px;
  padding: 30px;
  background: var(--paper);
  outline: 1px solid var(--line);
}

.course-card.is-featured {
  background: #f2f5f0;
}

.course-card-head,
.course-card-foot,
.course-facts {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}

.course-card-head {
  justify-content: space-between;
}

.course-category,
.course-featured,
.course-duration,
.course-card-foot,
.course-facts {
  color: var(--muted);
  font-size: 13px;
}

.course-category {
  margin: 0;
  color: var(--jade);
}

.course-featured {
  color: var(--gold-deep);
}

.course-card h3 {
  margin: 40px 0 16px;
  font-family: var(--font-serif);
  font-size: 28px;
  font-weight: 600;
  line-height: 1.35;
}

.course-card h3 a::after {
  content: "";
  position: absolute;
  inset: 0;
}

.course-card > p:not(.course-category) {
  margin: 0 0 34px;
  color: var(--muted);
  line-height: 1.8;
}

.course-card-foot {
  position: absolute;
  left: 30px;
  right: 30px;
  bottom: 28px;
  justify-content: space-between;
}

.course-reader-shell {
  width: min(100% - 48px, 1420px);
  margin: 0 auto;
  padding: 36px 0 140px;
}

.course-breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 9px;
  color: var(--muted);
  font-size: 14px;
}

.course-reader-head {
  max-width: 900px;
  padding: 82px 0 76px;
}

.course-reader-head h1 {
  font-size: clamp(46px, 6vw, 78px);
}

.course-deck {
  max-width: 760px;
  color: var(--muted);
  font-family: var(--font-serif);
  font-size: clamp(21px, 2.2vw, 28px);
  line-height: 1.7;
}

.course-facts {
  margin-top: 28px;
}

.course-facts span + span::before {
  content: "·";
  margin-right: 12px;
  color: var(--gold-deep);
}

.course-reader-layout {
  display: grid;
  grid-template-columns: 190px minmax(0, 760px) 230px;
  justify-content: space-between;
  gap: clamp(32px, 4vw, 66px);
  padding-top: 54px;
  border-top: 1px solid var(--line);
}

.course-toc {
  position: sticky;
  top: 106px;
  align-self: start;
  display: grid;
  gap: 13px;
  color: var(--muted);
  font-size: 14px;
}

.course-toc strong {
  margin-bottom: 8px;
  color: var(--ink);
}

.course-toc a:hover,
.course-toc a:focus-visible {
  color: var(--jade);
}

.course-body {
  min-width: 0;
  font-family: var(--font-serif);
  font-size: 19px;
  line-height: 2;
}

.course-body h2 {
  margin: 78px 0 22px;
  scroll-margin-top: 110px;
  font-size: 32px;
  line-height: 1.4;
}

.course-body h2:first-child {
  margin-top: 0;
}

.course-body p {
  margin: 0 0 28px;
  color: #343936;
}

.course-check-list {
  display: grid;
  gap: 12px;
  margin: 0 0 30px;
  padding: 0;
  list-style: none;
}

.course-check-list li {
  position: relative;
  padding-left: 28px;
  color: #343936;
}

.course-check-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 13px;
  height: 13px;
  border: 1px solid var(--line-strong);
}

.course-self-check {
  position: sticky;
  top: 106px;
  align-self: start;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.44);
}

.course-self-check details {
  padding: 20px;
}

.course-self-check summary {
  cursor: pointer;
  color: var(--ink);
  font-family: var(--font-serif);
  font-size: 18px;
  font-weight: 600;
}

.course-self-check ul {
  display: grid;
  gap: 11px;
  margin: 20px 0;
  padding: 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.65;
  list-style: none;
}

.course-self-check li {
  position: relative;
  padding-left: 21px;
}

.course-self-check li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 4px;
  width: 11px;
  height: 11px;
  border: 1px solid var(--line-strong);
}

.course-self-check .button {
  width: 100%;
  min-height: 42px;
  padding: 0 10px;
  font-size: 13px;
}

.fengshui-diagram {
  margin: 0 0 50px;
  padding: 18px;
  border: 1px solid var(--line);
  background: #fbfbf8;
}

.fengshui-diagram svg {
  width: 100%;
  display: block;
}

.fengshui-diagram figcaption {
  margin-top: 9px;
  color: var(--muted);
  font-family: var(--sans);
  font-size: 12px;
}

.diagram-home,
.diagram-object,
.diagram-grid,
.diagram-ring,
.diagram-line,
.diagram-door,
.diagram-road,
.diagram-contour,
.diagram-water,
.diagram-qi,
.diagram-air,
.diagram-alert {
  fill: none;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.diagram-home { stroke: #464b48; stroke-width: 3; }
.diagram-door { stroke: #4d7c70; stroke-width: 6; }
.diagram-object { fill: #edf2ef; stroke: #69716c; stroke-width: 2; }
.diagram-grid, .diagram-ring { stroke: #b6c4be; stroke-width: 1.5; }
.diagram-line { stroke: #315f55; stroke-width: 3; stroke-dasharray: 7 6; }
.diagram-road { stroke: #7c8581; stroke-width: 22; opacity: 0.45; }
.diagram-contour { stroke: #899f94; stroke-width: 11; opacity: 0.5; }
.diagram-water, .diagram-air { stroke: #78aeb5; stroke-width: 8; opacity: 0.7; }
.diagram-qi { stroke: #4e8d79; stroke-width: 10; opacity: 0.48; }
.diagram-alert { fill: rgba(160, 61, 45, 0.11); stroke: #a03d2d; stroke-width: 2; }
.diagram-point { fill: #a03d2d; }
.fengshui-diagram text { fill: #565c58; font: 14px var(--sans); }

.course-source-note {
  margin-top: 84px;
  padding-top: 34px;
  border-top: 1px solid var(--line);
}

.course-source-note h2 {
  margin-top: 0;
}

.related-courses {
  margin-top: 120px;
  padding-top: 64px;
  border-top: 1px solid var(--line);
}

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

@media (max-width: 1100px) {
  .header-inner {
    grid-template-columns: 160px minmax(0, 1fr) 130px;
  }

  .primary-nav {
    gap: 18px;
  }

  .hex-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

@media (max-width: 820px) {
  .header-inner {
    width: min(100% - 28px, var(--max));
    grid-template-columns: 1fr auto;
  }

  .nav-toggle {
    display: grid;
  }

  .header-action {
    display: none;
  }

  .primary-nav {
    position: fixed;
    inset: 72px 0 0;
    display: none;
    flex-direction: column;
    align-items: stretch;
    justify-content: flex-start;
    gap: 0;
    padding: 28px 24px;
    background: var(--paper);
  }

  .nav-open .primary-nav {
    display: flex;
  }

  .primary-nav a {
    min-height: 56px;
    display: flex;
    align-items: center;
    border-bottom: 1px solid var(--line);
    font-family: var(--serif);
    font-size: 22px;
  }

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

  .mother-hero {
    min-height: 680px;
  }

  .mother-hero-content {
    padding: 80px 0 140px;
  }

  .hero-note {
    right: auto;
    left: 0;
    bottom: 36px;
  }

  .principle-grid,
  .product-stage,
  .page-hero,
  .academy-hero,
  .academy-toolbar,
  .course-reader-layout {
    grid-template-columns: 1fr;
  }

  .academy-hero {
    padding-top: 76px;
  }

  .academy-hero-index {
    width: min(100%, 420px);
    justify-self: center;
  }

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

  .academy-entry-layers,
  .academy-problem-links {
    grid-template-columns: 1fr 1fr;
  }

  .academy-problem-entry {
    grid-column: 1 / -1;
  }

  .course-toc {
    position: static;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    padding-bottom: 34px;
    border-bottom: 1px solid var(--line);
  }

  .course-self-check {
    position: static;
  }

  .course-toc strong {
    grid-column: 1 / -1;
  }

  .product-stage-copy,
  .page-hero-copy {
    padding: 76px 24px;
  }

  .product-stage-visual,
  .page-hero-visual {
    min-height: 440px;
  }

  .product-stage-visual {
    order: -1;
  }

  .zj-stage .product-stage-visual {
    order: initial;
  }

  .section-head {
    display: block;
  }

  .section-head p {
    margin-top: 18px;
  }

  .process-grid,
  .evidence-grid,
  .device-grid,
  .about-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .evidence-item:first-child {
    grid-column: auto;
  }

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

@media (max-width: 560px) {
  .page-shell,
  .section-inner,
  .academy-hero,
  .academy-catalog,
  .course-reader-shell {
    width: min(100% - 28px, var(--max));
  }

  .display-title {
    font-size: 62px;
  }

  .hero-statement {
    font-size: 24px;
  }

  .hero-note {
    gap: 18px;
  }

  .brand-principle,
  .content-section {
    padding: 76px 0;
  }

  .product-stage-copy,
  .page-hero-copy {
    padding: 64px 18px;
  }

  .page-hero-visual,
  .product-stage-visual {
    min-height: 340px;
  }

  .orbit-label {
    transform: translate(-50%, -50%) rotate(var(--angle)) translateY(-150px) rotate(calc(-1 * var(--angle)));
  }

  .hex-toolbar {
    top: 72px;
    grid-template-columns: 1fr;
  }

  .hex-count {
    min-height: 40px;
  }

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

  .hex-card {
    min-height: 135px;
  }

  .layer-list,
  .process-grid,
  .evidence-grid,
  .device-grid,
  .about-grid,
  .screenshot-grid,
  .footer-grid,
  .academy-grid,
  .course-toc {
    grid-template-columns: 1fr;
  }

  .academy-hero {
    min-height: auto;
    padding: 62px 0 76px;
  }

  .academy-hero h1 {
    font-size: 52px;
  }

  .academy-catalog {
    padding: 68px 0 100px;
  }

  .academy-entry-layers,
  .academy-problem-links {
    grid-template-columns: 1fr;
  }

  .academy-entry-layers article {
    min-height: auto;
    padding: 28px 22px;
  }

  .academy-toolbar {
    gap: 26px;
  }

  .category-strip {
    flex-wrap: nowrap;
    overflow-x: auto;
    padding-bottom: 8px;
    scrollbar-width: thin;
  }

  .category-strip button {
    flex: 0 0 auto;
  }

  .course-card {
    min-height: 240px;
    padding: 24px;
  }

  .course-card h3 {
    margin-top: 32px;
    font-size: 25px;
  }

  .course-card-foot {
    left: 24px;
    right: 24px;
    bottom: 22px;
  }

  .course-reader-shell {
    padding-top: 24px;
  }

  .course-reader-head {
    padding: 58px 0 52px;
  }

  .course-reader-head h1 {
    font-size: 44px;
  }

  .course-reader-layout {
    gap: 42px;
  }

  .course-body {
    font-size: 18px;
  }

  .course-body h2 {
    margin-top: 58px;
    font-size: 27px;
  }

  .layer-item {
    min-height: 170px;
  }

  .screenshot-figure img {
    aspect-ratio: 4 / 3;
  }

  .app-bridge-inner {
    grid-template-columns: 1fr;
  }

  .bridge-mark {
    width: 88px;
  }

  .header-product-menu {
    display: none;
  }
}

@media (max-width: 767px) {
  .site-analytics-summary {
    position: static;
    padding: 14px 20px 18px;
    border-top: 1px solid rgba(24, 38, 35, 0.08);
    background: var(--paper);
    text-align: center;
  }
}

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

  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  [data-reveal] {
    opacity: 1;
    transform: none;
  }
}
.course-source-section {
  margin-top: 3.25rem;
  padding-top: 2rem;
  border-top: 1px solid rgba(31, 47, 44, 0.14);
}

.course-source-grid {
  display: grid;
  gap: 1rem;
}

.course-source-card {
  padding: 1.25rem 1.35rem;
  border: 1px solid rgba(159, 126, 58, 0.25);
  border-radius: 6px;
  background: #fbf8ee;
}

.course-source-card header span,
.source-state-label {
  color: #8a6d2d;
  font-size: 0.82rem;
}

.course-source-card h3 {
  margin: 0.3rem 0 0.8rem;
  font-size: 1.18rem;
}

.course-source-card blockquote {
  margin: 0.8rem 0 1rem;
  padding: 0.8rem 1rem;
  border-left: 3px solid #a88943;
  color: #172b28;
  background: rgba(255, 255, 255, 0.66);
}

.course-source-card dl {
  display: grid;
  gap: 0.8rem;
  margin: 0;
}

.course-source-card dt {
  margin-bottom: 0.2rem;
  color: #7d765f;
  font-size: 0.82rem;
}

.course-source-card dd {
  margin: 0;
}

.course-source-card a {
  display: inline-block;
  margin-top: 1rem;
  color: #315f57;
  text-underline-offset: 0.2em;
}

.course-body,
.course-body li,
.course-self-check {
  overflow-wrap: anywhere;
  word-break: break-word;
}

@media (max-width: 640px) {
  .course-reader-head h1 {
    font-size: clamp(1.8rem, 8vw, 2.12rem);
  }

  .course-body {
    font-size: 1rem;
    line-height: 1.78;
  }

  .course-body h2 {
    margin-top: 2rem;
  }

  .course-source-card {
    padding: 1rem;
  }
}