:root {
  --brand-bg: #16140f;
  --brand-surface: #211e17;
  --brand-text: #ede8dd;
  --brand-muted: #bdb5a5;
  --reading-bg: #f7f4ee;
  --reading-surface: #fdfbf7;
  --reading-text: #1c1a17;
  --reading-muted: #5a554c;
  --reading-faint: #756f65;
  --accent: #a8322a;
  --accent-on-dark: #e0796c;
  --border: rgba(28, 26, 23, 0.16);
  --border-soft: rgba(28, 26, 23, 0.09);
  --focus: #f2b84b;
  --shadow: 0 18px 48px rgba(28, 26, 23, 0.09);
  /* Legacy aliases keep older page-specific rules on the warm reading palette,
     even when the operating system itself uses a dark appearance. */
  --paper: var(--reading-bg);
  --paper-2: var(--reading-surface);
  --ink: var(--reading-text);
  --ink-soft: var(--reading-muted);
  --ink-faint: var(--reading-faint);
  --zhu: var(--accent);
  --zhu-soft: #c7564b;
  --line: var(--border);
  --line-2: var(--border-soft);
  --bar: rgba(22, 20, 15, 0.96);
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans SC", "PingFang SC", "Hiragino Sans GB", Arial, sans-serif;
  --serif: "Songti SC", "STSong", "Source Han Serif SC", "Noto Serif CJK SC", Georgia, "Times New Roman", serif;
  color-scheme: light;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-padding-top: 80px;
  background: var(--reading-bg);
}

html,
body {
  margin: 0;
}

body {
  min-width: 0;
  overflow-x: clip;
  background: var(--reading-bg);
  color: var(--reading-text);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.72;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img,
svg {
  max-width: 100%;
}

a {
  color: var(--accent);
  text-underline-offset: 0.2em;
  text-decoration-thickness: 0.08em;
}

a:hover {
  text-decoration: underline;
}

button,
input,
select,
textarea {
  font: inherit;
}

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

[data-lang="zh"] .en,
[data-lang="zh"] .hant,
[data-lang="hant"] .zh,
[data-lang="hant"] .en,
[data-lang="en"] .zh,
[data-lang="en"] .hant {
  display: none !important;
}

.skip-link {
  position: fixed;
  z-index: 1000;
  top: 8px;
  left: 12px;
  padding: 10px 14px;
  border-radius: 8px;
  background: var(--reading-surface);
  color: var(--reading-text);
  box-shadow: var(--shadow);
  transform: translateY(-160%);
}

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

.wrap {
  width: min(100%, 1120px);
  margin-inline: auto;
  padding-inline: 28px;
}

/* Shared fixed navigation ------------------------------------------------- */
.site-header {
  position: sticky;
  z-index: 100;
  top: 0;
  height: 64px;
  border-bottom: 1px solid rgba(237, 232, 221, 0.12);
  background: rgba(22, 20, 15, 0.96);
  color: var(--brand-text);
  backdrop-filter: blur(14px) saturate(140%);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
}

.site-header .site-header-inner {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
  gap: 16px;
  padding-block: 0;
}

.site-header .brand,
.site-header .brand a {
  display: inline-flex;
  flex: 0 0 auto;
  align-items: center;
}

.site-header .brand {
  width: auto;
  justify-content: flex-start;
}

.site-header .brand a {
  min-width: 44px;
  min-height: 44px;
  color: var(--brand-text);
}

.site-header .brand .logo {
  display: block;
  width: auto;
  height: 34px;
}

.site-header .brand .logo.light {
  display: none;
}

.site-header .brand .logo.dark {
  display: block;
}

.site-header-actions {
  display: flex;
  flex: 0 0 auto;
  align-items: center;
  justify-content: flex-end;
  min-width: 0;
  gap: 12px;
}

.site-header .topnav {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 4px;
}

.site-header .topnav a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 8px 12px;
  border-radius: 999px;
  color: var(--brand-muted);
  font-family: var(--sans);
  font-size: 14px;
  font-weight: 560;
  line-height: 1;
  white-space: nowrap;
}

.site-header .topnav a:hover,
.site-header .topnav a[aria-current="page"] {
  color: var(--brand-text);
  text-decoration: none;
  background: rgba(237, 232, 221, 0.08);
}

.site-header .topnav .download-nav {
  margin-left: 4px;
  padding-inline: 17px;
  background: var(--brand-text);
  color: var(--brand-bg);
}

.site-header .topnav .download-nav:hover {
  background: #fffdf8;
  color: var(--brand-bg);
}

.site-header .langseg {
  display: inline-flex;
  flex: 0 0 auto;
  align-items: center;
  gap: 2px;
  min-height: 44px;
  padding: 3px;
  border: 1px solid rgba(237, 232, 221, 0.2);
  border-radius: 999px;
  background: rgba(237, 232, 221, 0.08);
}

.site-header .langseg a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 44px;
  min-height: 44px;
  padding: 0 8px;
  border-radius: 999px;
  color: var(--brand-muted);
  font-family: var(--sans);
  font-size: 13px;
  font-weight: 650;
  line-height: 1;
}

.site-header .langseg a:hover {
  color: var(--brand-text);
  text-decoration: none;
}

.site-header .langseg a[aria-current="true"] {
  background: var(--brand-text);
  color: var(--brand-bg);
}

.menu-toggle {
  display: none;
  flex: 0 0 44px;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  padding: 0;
  border: 0;
  border-radius: 10px;
  background: transparent;
  color: var(--brand-text);
  cursor: pointer;
}

.menu-toggle:hover {
  background: rgba(237, 232, 221, 0.08);
}

.menu-icon,
.menu-icon::before,
.menu-icon::after {
  display: block;
  width: 20px;
  height: 2px;
  border-radius: 2px;
  background: currentColor;
}

.menu-icon {
  position: relative;
}

.menu-icon::before,
.menu-icon::after {
  position: absolute;
  left: 0;
  content: "";
}

.menu-icon::before {
  top: -6px;
}

.menu-icon::after {
  top: 6px;
}

.site-header[data-menu-open="true"] .menu-icon {
  background: transparent;
}

.site-header[data-menu-open="true"] .menu-icon::before {
  top: 0;
  transform: rotate(45deg);
}

.site-header[data-menu-open="true"] .menu-icon::after {
  top: 0;
  transform: rotate(-45deg);
}

/* Home ------------------------------------------------------------------- */
.home-page {
  background: var(--reading-bg);
}

.home-page main {
  overflow: clip;
}

.home-page .hero {
  position: relative;
  isolation: isolate;
  max-width: 920px;
  margin-inline: auto;
  padding: clamp(48px, 7vw, 80px) 28px clamp(52px, 7vw, 76px);
  color: var(--brand-text);
  text-align: center;
}

.home-page .hero::before {
  position: absolute;
  z-index: -1;
  inset: 0 calc(50% - 50vw);
  background:
    radial-gradient(circle at 50% 12%, rgba(202, 163, 91, 0.12), transparent 44%),
    var(--brand-bg);
  content: "";
}

.home-page .hero .mark {
  width: clamp(112px, 12vw, 148px);
  height: auto;
  margin: 0 auto 20px;
}

.home-page .hero .latin-name {
  color: var(--accent-on-dark);
  font-family: var(--sans);
  font-size: 13px;
  font-weight: 650;
  letter-spacing: 0.24em;
}

.home-page .hero h1 {
  margin: 10px 0 16px;
  color: var(--brand-text);
  font-family: var(--serif);
  font-size: clamp(48px, 7vw, 72px);
  font-weight: 500;
  line-height: 1.05;
  letter-spacing: 0.06em;
}

.home-page .hero .tagline {
  max-width: 34ch;
  margin: 0 auto 10px;
  color: var(--brand-text);
  font-family: var(--serif);
  font-size: clamp(20px, 2.5vw, 26px);
  line-height: 1.45;
}

.home-page .hero .sub {
  max-width: 52ch;
  margin-inline: auto;
  color: var(--brand-muted);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.7;
}

.home-page .cta {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  margin: 28px 0 0;
  flex-wrap: wrap;
}

.home-page .badge,
.home-page .secondary-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  border-radius: 12px;
  padding: 10px 20px;
  font-family: var(--sans);
  font-weight: 650;
}

.home-page .badge {
  background: var(--brand-text);
  color: var(--brand-bg);
}

.home-page .badge:hover {
  background: #fffdf8;
  text-decoration: none;
}

.home-page .secondary-cta {
  border: 1px solid rgba(237, 232, 221, 0.32);
  color: var(--brand-text);
}

.home-page .secondary-cta:hover {
  border-color: var(--brand-text);
  background: rgba(237, 232, 221, 0.08);
  text-decoration: none;
}

.home-page .cta .note {
  flex-basis: 100%;
  color: var(--brand-muted);
  font-family: var(--sans);
  font-size: 13px;
}

.home-content {
  padding-top: 28px;
  padding-bottom: 20px;
}

.home-page section {
  padding: clamp(36px, 6vw, 64px) 0;
}

.home-page .rule {
  margin: 0;
  background: var(--border-soft);
}

.home-page h2 {
  margin: 0 0 28px;
  color: var(--accent);
  font-family: var(--sans);
  font-size: 14px;
  font-weight: 720;
  letter-spacing: 0.16em;
}

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

.home-page .entry-card,
.home-page .story-card,
.home-page .band {
  border-color: var(--border);
  background: var(--reading-surface);
  box-shadow: 0 1px 0 rgba(28, 26, 23, 0.02);
}

.home-page .entry-card {
  min-height: 0;
  padding: 24px;
}

.home-page .entry-card h3,
.home-page .story-card h3,
.home-page .feature h3,
.home-page .band .big {
  color: var(--reading-text);
  font-family: var(--serif);
}

.home-page .entry-card p,
.home-page .story-card p,
.home-page .feature p,
.home-page .band p,
.home-page .story-lead {
  color: var(--reading-muted);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.72;
}

.home-page .entry-card:hover,
.home-page .story-card:hover {
  border-color: rgba(168, 50, 42, 0.6);
  box-shadow: var(--shadow);
  text-decoration: none;
  transform: translateY(-2px);
}

.home-page .english-gate {
  max-width: 68ch;
  margin: 18px auto 0;
  padding: 16px 18px;
  border-left: 3px solid var(--accent);
  background: rgba(168, 50, 42, 0.06);
  color: var(--reading-muted);
  font-size: 15px;
}

.home-page .story-band {
  border-color: var(--border-soft);
}

.home-page .grid {
  gap: 34px 44px;
}

.home-page .feature .k {
  font-family: var(--sans);
  font-weight: 700;
}

/* Reading and legal pages ------------------------------------------------ */
.legal-page,
.invite-page,
.read-page {
  background: var(--reading-bg);
  color: var(--reading-text);
}

.legal-page .doc,
.read-page main .wrap {
  width: min(100%, 760px);
  max-width: 70ch;
}

.legal-page .doc {
  padding-top: clamp(40px, 6vw, 68px);
  padding-bottom: 80px;
}

.legal-page .doc h1,
.read-page h1,
.read-page h2,
.read-page h3,
.read-page .classical,
.read-page blockquote {
  font-family: var(--serif);
}

.legal-page .doc h1 {
  color: var(--reading-text);
  font-size: clamp(34px, 5vw, 46px);
  line-height: 1.2;
}

.legal-page .doc h2 {
  margin-top: 44px;
  border-color: var(--border-soft);
  color: var(--reading-text);
  font-family: var(--serif);
  font-size: 23px;
  line-height: 1.35;
}

.legal-page .doc h3 {
  color: var(--reading-text);
  font-family: var(--sans);
  font-size: 17px;
}

.legal-page .doc p,
.legal-page .doc li,
.read-page main p,
.read-page main li {
  color: var(--reading-text);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.82;
}

.legal-page .doc .updated,
.legal-page .doc .muted,
.read-page .muted,
.read-page .meta {
  color: var(--reading-faint);
}

.legal-page .doc .lead {
  border-color: var(--border);
  background: var(--reading-surface);
  color: var(--reading-text);
  font-size: 18px;
}

.read-page main .wrap {
  padding-top: 44px;
  padding-bottom: 76px;
}

.read-page .card,
.read-page .chapter-card,
.read-page .commentary,
.read-page .story-card {
  border-color: var(--border);
  background: var(--reading-surface);
}

.read-page .classical,
.read-page blockquote {
  color: var(--reading-text);
  font-size: 18px;
  line-height: 1.95;
}

.read-page footer,
.legal-page footer,
.invite-page footer,
.home-page footer {
  border-top: 1px solid var(--border-soft);
  background: var(--reading-bg);
  color: var(--reading-faint);
  font-family: var(--sans);
}

.read-page footer a,
.legal-page footer a,
.invite-page footer a,
.home-page footer a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  margin-inline: 6px;
  padding-inline: 6px;
}

.read-page footer .fine,
.legal-page footer .fine,
.invite-page footer .fine,
.home-page footer .fine {
  margin-top: 10px;
  color: var(--reading-faint);
  font-size: 12.5px;
}

/* Invitation ------------------------------------------------------------- */
.invite-page .invite-shell {
  width: min(100%, 620px);
  padding-top: 28px;
}

.invite-page .card {
  padding-top: 36px;
}

.invite-page .card h1,
.invite-page .card .h1en {
  font-family: var(--serif);
}

.invite-page .card .lead,
.invite-page .hint,
.invite-page .feats li {
  color: var(--reading-muted);
  font-family: var(--sans);
  font-size: 16px;
}

.invite-page .codebox {
  border-color: var(--border);
  background: var(--reading-surface);
  box-shadow: var(--shadow);
}

.invite-page .badge {
  min-height: 48px;
  background: var(--reading-text);
  color: var(--reading-bg);
  font-family: var(--sans);
}

@media (max-width: 760px) {
  .wrap {
    padding-inline: 16px;
  }

  .site-header .site-header-inner {
    gap: 8px;
  }

  .site-header .brand .logo {
    height: 30px;
  }

  .site-header-actions {
    gap: 6px;
  }

  .menu-toggle {
    display: inline-flex;
  }

  .site-header .topnav {
    position: absolute;
    top: calc(100% + 8px);
    right: 16px;
    left: 16px;
    display: none;
    align-items: stretch;
    padding: 10px;
    border: 1px solid rgba(237, 232, 221, 0.14);
    border-radius: 14px;
    background: var(--brand-bg);
    box-shadow: 0 22px 50px rgba(0, 0, 0, 0.34);
  }

  .site-header[data-menu-open="true"] .topnav {
    display: grid;
  }

  .site-header .topnav a {
    justify-content: flex-start;
    border-radius: 9px;
    padding-inline: 14px;
  }

  .site-header .topnav .download-nav {
    margin: 4px 0 0;
    justify-content: center;
  }

  .home-page .hero {
    padding-inline: 20px;
  }

  .home-page .entry-grid,
  .home-page .story-grid,
  .home-page .grid {
    grid-template-columns: 1fr;
  }

  .home-page .story-grid,
  .home-page .grid {
    gap: 18px;
  }

  .home-page .band {
    padding: 28px 20px;
  }
}

@media (max-width: 360px) {
  .site-header .brand .logo {
    width: 70px;
    height: auto;
  }

  .site-header .langseg a {
    min-width: 44px;
    padding-inline: 4px;
    font-size: 12px;
  }

  .site-header-actions {
    gap: 3px;
  }

  .home-page .hero {
    padding-inline: 16px;
  }
}

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

/* Regional market pages + first-party share controls -------------------- */
.market-page {
  background: var(--reading-bg);
}

.market-page .site-header-inner {
  display: flex;
}

.market-hero {
  padding: clamp(64px, 10vw, 118px) 0 62px;
  background:
    radial-gradient(circle at 82% 18%, rgba(168, 50, 42, 0.13), transparent 30%),
    linear-gradient(145deg, #17140f, #262119);
  color: var(--brand-text);
}

.market-eyebrow {
  margin: 0 0 12px;
  color: var(--accent-on-dark);
  font-size: 13px;
  font-weight: 720;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.market-hero h1 {
  max-width: 760px;
  margin: 0;
  color: #fffdf8;
  font-family: var(--serif);
  font-size: clamp(38px, 6.2vw, 68px);
  line-height: 1.1;
  letter-spacing: -0.025em;
}

.market-lead {
  max-width: 720px;
  margin: 22px 0 0;
  color: var(--brand-muted);
  font-size: clamp(17px, 2vw, 21px);
}

.market-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px 20px;
  margin-top: 32px;
}

.market-actions a {
  color: var(--brand-text);
}

.market-actions .market-primary {
  display: inline-flex;
  min-height: 48px;
  align-items: center;
  padding: 10px 22px;
  border-radius: 999px;
  background: var(--brand-text);
  color: var(--brand-bg);
  font-weight: 700;
  text-decoration: none;
}

.market-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  padding-block: 52px;
}

.market-card {
  min-height: 190px;
  padding: 24px;
  border: 1px solid var(--border);
  border-radius: 16px;
  background: var(--reading-surface);
  box-shadow: var(--shadow);
  color: var(--reading-text);
  text-decoration: none;
}

.market-card:hover {
  border-color: rgba(168, 50, 42, 0.55);
  text-decoration: none;
}

.market-card h2,
.market-trust h2,
.share-panel h2 {
  margin: 0 0 10px;
  font-family: var(--serif);
  font-size: 22px;
  line-height: 1.3;
}

.market-card p,
.market-account p {
  margin: 0;
  color: var(--reading-muted);
}

.market-trust {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(260px, 0.8fr);
  gap: 24px;
  padding-bottom: 46px;
}

.market-trust > div {
  padding: 26px;
  border: 1px solid var(--border);
  border-radius: 16px;
  background: var(--reading-surface);
}

.market-trust .market-eyebrow {
  color: var(--accent);
}

.market-trust ul {
  margin: 16px 0 0;
  padding-left: 1.2em;
}

.market-trust li + li {
  margin-top: 8px;
}

.share-panel {
  margin-block: 0 54px;
  padding: 26px;
  border: 1px solid var(--border);
  border-radius: 16px;
  background: #eee8dc;
}

.share-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 9px;
  margin-top: 16px;
}

.share-actions button,
.share-actions a {
  display: inline-flex;
  min-height: 42px;
  align-items: center;
  justify-content: center;
  padding: 8px 14px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--reading-surface);
  color: var(--reading-text);
  cursor: pointer;
  font-family: var(--sans);
  font-size: 14px;
  font-weight: 620;
  text-decoration: none;
}

.share-actions button:hover,
.share-actions a:hover {
  border-color: var(--accent);
  text-decoration: none;
}

.share-status {
  min-height: 1.5em;
  margin: 12px 0 0;
  color: var(--reading-muted);
  font-size: 13px;
}

.market-footer {
  padding: 30px 0 44px;
  border-top: 1px solid var(--border-soft);
  color: var(--reading-muted);
  font-size: 13px;
}

.market-footer p {
  margin: 8px 0 0;
}

.read-page .share-panel {
  margin-top: 34px;
}

@media (max-width: 760px) {
  .market-page .site-header .topnav {
    position: static;
    display: flex;
    padding: 0;
    border: 0;
    background: transparent;
    box-shadow: none;
  }

  .market-page .site-header .topnav > a:not(.download-nav) {
    display: none;
  }

  .market-grid,
  .market-trust {
    grid-template-columns: 1fr;
  }

  .market-grid {
    padding-block: 34px;
  }

  .market-card {
    min-height: 0;
  }
}