:root {
  color-scheme: dark;
  --bg: #0c0d0b;
  --panel: #151610;
  --gold: #c1a76a;
  --text: #ddd7c9;
  --muted: #a7a293;
  --line: #3b392c;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background:
    radial-gradient(ellipse at top, #282719 0, transparent 650px),
    var(--bg);
  color: var(--text);
  font-family: "Songti TC", "PMingLiU", Georgia, serif;
  line-height: 1.95;
}

a {
  color: var(--gold);
}

a:hover {
  color: #f2ddaa;
}

a:focus-visible,
button:focus-visible,
input:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 5px;
}

.site-header {
  padding: 30px 20px 22px;
  text-align: center;
  background: #0b0c0be8;
  border-bottom: 1px solid var(--line);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 16px;
  text-decoration: none;
}

.sun-seal {
  font-size: 3.6rem;
  line-height: 1;
}

.brand strong {
  display: block;
  font-size: 1.65rem;
  font-weight: normal;
  letter-spacing: .24em;
}

.brand small {
  display: block;
  font-size: .65rem;
  letter-spacing: .16em;
}

.site-header nav {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 12px 30px;
  margin-top: 24px;
}

.site-header nav a {
  padding-bottom: 5px;
  color: var(--muted);
  text-decoration: none;
  border-bottom: 1px solid transparent;
}

.site-header nav a:hover,
.site-header nav a[aria-current="page"] {
  color: var(--gold);
  border-bottom-color: var(--gold);
}

main {
  width: min(1060px, calc(100% - 40px));
  margin: 0 auto;
}

h1,
h2,
h3 {
  color: var(--gold);
  font-weight: normal;
  line-height: 1.5;
}

h1 {
  font-size: clamp(2rem, 5vw, 3.4rem);
}

h2 {
  font-size: 1.5rem;
}

h3 {
  font-size: 1.15rem;
}

.eyebrow {
  color: var(--gold);
  font-size: .75rem;
  letter-spacing: .18em;
}

.hero {
  padding: 60px 0 70px;
  text-align: center;
}

.hero-seal {
  margin: 12px 0;
  color: var(--gold);
  font-size: 6rem;
  line-height: 1.3;
}

.hero h1 {
  margin: 15px 0;
  letter-spacing: .1em;
}

.hero-copy {
  color: var(--muted);
}

.ornament {
  margin: 28px 0;
  color: var(--gold);
}

.button,
button {
  display: inline-block;
  padding: 12px 26px;
  border: 1px solid var(--gold);
  background: transparent;
  color: var(--gold);
  font: inherit;
  text-decoration: none;
  cursor: pointer;
}

.button:hover,
button:hover {
  background: var(--gold);
  color: var(--bg);
}

button:disabled {
  opacity: .6;
  cursor: wait;
}

.home-links {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 22px;
  margin-bottom: 70px;
}

.card,
.document,
.login-panel {
  padding: 32px;
  border: 1px solid var(--line);
  background: var(--panel);
}

.card {
  display: block;
  text-decoration: none;
}

.card:hover {
  border-color: var(--gold);
}

.card p {
  color: var(--muted);
}

.documents {
  max-width: 860px;
  margin: 0 auto;
}

.page-heading {
  padding: 50px 0 25px;
  text-align: center;
}

.page-heading h1 {
  font-size: 2rem;
}

.document-nav {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 12px 24px;
  margin-bottom: 35px;
}

.document {
  margin-bottom: 32px;
  scroll-margin-top: 25px;
}

.document h2 {
  margin-top: 0;
}

.warning {
  padding: 18px;
  border-left: 2px solid #aa6957;
  background: #39201955;
  color: #e3b6a9;
}

.book-list {
  padding-left: 1.5em;
}

.book-list li {
  margin: 8px 0;
}

.translation {
  margin-top: 28px;
  padding-top: 20px;
  border-top: 1px solid var(--line);
  color: var(--muted);
}

/* 只顯示插圖，不顯示圖說。 */
.document-image {
  display: block;
  width: 100%;
  height: auto;
  max-height: 600px;
  object-fit: contain;
  margin: 26px auto;
}

.login-panel {
  max-width: 500px;
  margin: 65px auto;
}

.login-panel h1 {
  font-size: 1.8rem;
}

label {
  display: block;
  margin: 20px 0 8px;
}

input {
  width: 100%;
  min-width: 0;
  padding: 12px;
  border: 1px solid #595440;
  background: #090a08;
  color: var(--text);
  font: inherit;
}

.login-panel button {
  width: 100%;
  margin-top: 28px;
}

.status {
  min-height: 1.95em;
  color: #e4ac98;
}

footer {
  margin-top: 60px;
  padding: 28px 20px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  text-align: center;
  font-size: .8rem;
  letter-spacing: .1em;
}

@media (max-width: 680px) {
  .home-links {
    grid-template-columns: 1fr;
  }

  .card,
  .document,
  .login-panel {
    padding: 22px;
  }

  .brand strong {
    font-size: 1.35rem;
  }

  .brand small {
    font-size: .55rem;
  }

  .hero {
    padding-top: 40px;
  }
}


.site-logo {
  display: block;
  width: 60px;
  height: 60px;
  object-fit: contain;
  flex-shrink: 0;
}

@media (max-width: 680px) {
  .site-logo {
    width: 48px;
    height: 48px;
  }
}

/* 首頁中央 Logo */
.hero-logo {
  display: block;
  width: 120px;
  height: 120px;
  object-fit: contain;
  margin: 12px auto;
}