/* HERTI · Reading Day — styles, aligned with forum palette */

:root {
  --rd-bg: #faf7f0;
  --rd-bg-soft: #fffdfa;
  --rd-paper: #fffcf4;
  --rd-ink: #4f4536;
  --rd-ink-soft: #7a6f5b;
  --rd-ink-mute: #a79a82;
  --rd-line: #d9ccb0;
  --rd-line-soft: #ece0c4;
  --rd-accent: #b85c38;
  --rd-accent-soft: #d99976;
  --rd-gold: #a88a4a;
  --rd-serif-cn: "Noto Serif SC", "Source Han Serif SC", "Songti SC", "STSong", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", serif;
  --rd-serif-en: "Libre Baskerville", Georgia, serif;
  --rd-sans: "Manrope", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", -apple-system, "Helvetica Neue", sans-serif;
  --rd-radius: 2px;
  --rd-radius-lg: 6px;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  background: var(--rd-bg);
  color: var(--rd-ink);
  font-family: var(--rd-serif-cn);
  font-size: 16px;
  line-height: 1.72;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
}

.rd-app {
  max-width: 980px;
  margin: 0 auto;
  padding: 28px 24px 120px;
  position: relative;
}

/* ── topbar ───────────────────────────────────── */
.rd-topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding-bottom: 22px;
  border-bottom: 1px solid var(--rd-line-soft);
  margin-bottom: 16px;
  flex-wrap: wrap;
}
.home-btn {
  background: transparent;
  border: 1px solid var(--rd-line);
  color: var(--rd-ink-soft);
  font-family: var(--rd-serif-cn);
  font-size: 13px;
  padding: 7px 14px;
  border-radius: 999px;
  cursor: pointer;
  letter-spacing: 0.05em;
  white-space: nowrap;
  transition: all 0.18s ease;
}
.home-btn:hover { color: var(--rd-ink); border-color: var(--rd-ink-soft); }
.rd-title-wrap { text-align: center; flex: 1; min-width: 180px; }
.rd-logo {
  font-family: var(--rd-serif-en);
  font-weight: 700;
  font-size: 22px;
  letter-spacing: 0.22em;
  color: var(--rd-ink);
}
.rd-tagline {
  font-family: var(--rd-serif-cn);
  font-size: 12px;
  color: var(--rd-ink-mute);
  letter-spacing: 0.18em;
  margin-top: 3px;
}
.auth-entry { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.auth-user {
  font-family: var(--rd-serif-cn);
  font-size: 13px;
  color: var(--rd-ink-soft);
  letter-spacing: 0.04em;
}
.auth-pill {
  background: transparent;
  border: 1px solid var(--rd-line);
  color: var(--rd-ink-soft);
  font-family: var(--rd-serif-cn);
  font-size: 13px;
  padding: 7px 14px;
  border-radius: 999px;
  cursor: pointer;
  letter-spacing: 0.05em;
  white-space: nowrap;
  transition: all 0.18s ease;
}
.auth-pill:hover { color: var(--rd-ink); border-color: var(--rd-ink-soft); }

/* ── nav pills ────────────────────────────────── */
.rd-nav {
  display: flex;
  gap: 10px;
  justify-content: center;
  margin-bottom: 36px;
  flex-wrap: wrap;
}
.rd-nav-pill {
  background: transparent;
  border: 1px solid var(--rd-line-soft);
  color: var(--rd-ink-mute);
  padding: 10px 18px 10px 14px;
  border-radius: 999px;
  cursor: pointer;
  font-family: var(--rd-serif-cn);
  font-size: 13px;
  letter-spacing: 0.08em;
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  white-space: nowrap;
  transition: all 0.2s ease;
}
.rd-nav-pill:hover { color: var(--rd-ink-soft); border-color: var(--rd-line); }
.rd-nav-pill.active {
  color: var(--rd-ink);
  border-color: var(--rd-ink);
  background: var(--rd-bg-soft);
}
.rd-nav-num {
  font-family: var(--rd-serif-en);
  font-style: italic;
  font-size: 12px;
  color: var(--rd-ink-mute);
  letter-spacing: 0.04em;
}
.rd-nav-pill.active .rd-nav-num { color: var(--rd-accent); }

/* ── status line ──────────────────────────────── */
.rd-msg {
  min-height: 24px;
  text-align: center;
  color: var(--rd-ink-soft);
  font-size: 13px;
  margin-bottom: 4px;
  letter-spacing: 0.04em;
}
.rd-msg:empty {
  min-height: 0;
  margin-bottom: 0;
}

/* ── part frame ───────────────────────────────── */
.rd-part { display: none; animation: rd-fadein 0.5s ease both; }
.rd-part.active { display: block; }
.rd-part[hidden] { display: none !important; }

@keyframes rd-fadein {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

.rd-part-inner {
  background: var(--rd-paper);
  border: 1px solid var(--rd-line-soft);
  padding: 48px 48px 56px;
  border-radius: var(--rd-radius-lg);
  box-shadow: 0 1px 0 rgba(79,69,54,0.03), 0 12px 40px -30px rgba(79,69,54,0.25);
}
.rd-part-meta {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--rd-serif-en);
  font-size: 11px;
  letter-spacing: 0.28em;
  color: var(--rd-ink-mute);
  text-transform: uppercase;
  margin-bottom: 28px;
}
.rd-part-label { font-weight: 500; }
.rd-part-num {
  font-style: italic;
  color: var(--rd-accent);
  font-size: 14px;
  letter-spacing: 0.06em;
}
.rd-part-sep { color: var(--rd-line); }
.rd-part-date {
  letter-spacing: 0.14em;
  color: #8f3a2b;
}
.rd-part-meta-stack {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0;
  margin-bottom: 20px;
}
.rd-part-mainline {
  display: inline-flex;
  align-items: center;
  gap: 10px;
}
.rd-part-hint {
  letter-spacing: 0.14em;
  color: var(--rd-ink-mute);
}
.rd-part-switch {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
}
.rd-part-switch-btn {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2px;
  background: transparent;
  border: 1px solid var(--rd-line);
  color: var(--rd-ink-soft);
  font-family: var(--rd-serif-cn);
  font-size: 12px;
  letter-spacing: 0.1em;
  border-radius: 999px;
  padding: 7px 14px;
  cursor: pointer;
  transition: all 0.18s ease;
  white-space: nowrap;
}
.rd-part-switch-main {
  letter-spacing: 0.1em;
  line-height: 1.2;
}
.rd-part-switch-sub {
  font-size: 10px;
  letter-spacing: 0.08em;
  color: var(--rd-ink-mute);
  min-height: 1.1em;
  line-height: 1.1;
}
.rd-part-switch-btn:hover {
  color: var(--rd-ink);
  border-color: var(--rd-ink-soft);
}
.rd-part-switch-btn:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}
.rd-part-switch-btn:disabled:hover {
  color: var(--rd-ink-soft);
  border-color: var(--rd-line);
}
.rd-part-switch-btn:disabled .rd-part-switch-sub {
  color: var(--rd-line);
}
.rd-part-title {
  font-family: var(--rd-serif-cn);
  font-weight: 500;
  font-size: 30px;
  margin: 0 0 12px;
  letter-spacing: 0.12em;
  color: var(--rd-ink);
}
.rd-part-sub {
  font-size: 14px;
  color: var(--rd-ink-soft);
  letter-spacing: 0.04em;
  margin: 0 0 36px;
  line-height: 1.8;
}

/* ── PART 01 invitation ───────────────────────── */
.rd-invitation { text-align: center; padding: 72px 48px 80px; }
.rd-invitation .rd-part-meta { justify-content: center; margin-bottom: 28px; }
.rd-invitation .rd-part-switch { margin-bottom: 26px; }
.rd-invitation-title {
  font-family: var(--rd-serif-cn);
  font-weight: 400;
  font-size: 44px;
  margin: 0 0 10px;
  letter-spacing: 0.22em;
  color: var(--rd-ink);
}
.rd-invitation-sub {
  font-family: var(--rd-serif-en);
  font-style: italic;
  font-size: 18px;
  color: var(--rd-accent);
  margin: 0 0 40px;
  letter-spacing: 0.04em;
}
.rd-invitation-divider {
  width: 72px;
  height: 1px;
  background: var(--rd-line);
  margin: 0 auto 40px;
  position: relative;
}
.rd-invitation-divider::before,
.rd-invitation-divider::after {
  content: "";
  position: absolute;
  top: 50%;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--rd-accent-soft);
  transform: translateY(-50%);
}
.rd-invitation-divider::before { left: -10px; }
.rd-invitation-divider::after { right: -10px; }
.rd-invitation-body {
  font-family: var(--rd-serif-cn);
  font-size: 16px;
  line-height: 2.1;
  color: var(--rd-ink-soft);
  letter-spacing: 0.08em;
  margin: 0 auto 48px;
  max-width: 560px;
  white-space: pre-line;
}

/* ── buttons ──────────────────────────────────── */
.rd-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: 999px;
  border: 1px solid var(--rd-ink);
  background: var(--rd-ink);
  color: var(--rd-bg-soft);
  font-family: var(--rd-serif-cn);
  font-size: 14px;
  letter-spacing: 0.14em;
  cursor: pointer;
  white-space: nowrap;
  transition: all 0.2s ease;
}
.rd-btn:hover { background: var(--rd-accent); border-color: var(--rd-accent); }
.rd-btn:disabled { opacity: 0.5; cursor: not-allowed; }
.rd-btn.subtle {
  background: transparent;
  color: var(--rd-ink);
  border-color: var(--rd-line);
}
.rd-btn.subtle:hover {
  background: var(--rd-paper);
  border-color: var(--rd-ink);
  color: var(--rd-ink);
}
.rd-btn.primary { /* same as default ink style */ }

/* ── PART 02 form ─────────────────────────────── */
.rd-submit .rd-part-sub { margin-bottom: 28px; }

.rd-form { display: flex; flex-direction: column; gap: 24px; }

.rd-fade-panel {
  opacity: 0;
  transform: translateY(12px);
  filter: blur(1px);
  max-height: 0;
  overflow: hidden;
  pointer-events: none;
  transition: opacity 0.42s ease, transform 0.42s ease, filter 0.42s ease, max-height 0.55s ease;
}
.rd-fade-panel.is-visible {
  opacity: 1;
  transform: translateY(0);
  filter: blur(0);
  max-height: 2200px;
  pointer-events: auto;
}

.rd-input, .rd-textarea {
  width: 100%;
  background: transparent;
  border: none;
  border-bottom: 1px solid var(--rd-line);
  color: var(--rd-ink);
  font-family: var(--rd-serif-cn);
  font-size: 15px;
  padding: 8px 4px;
  outline: none;
  transition: border-color 0.2s ease;
}
.rd-input:focus, .rd-textarea:focus { border-bottom-color: var(--rd-accent); }
.rd-input::placeholder, .rd-textarea::placeholder {
  color: var(--rd-ink-mute);
  font-family: var(--rd-serif-cn);
  letter-spacing: 0.06em;
}
.rd-textarea {
  min-height: 96px;
  resize: vertical;
  line-height: 1.8;
  border: 1px solid var(--rd-line);
  border-radius: var(--rd-radius);
  padding: 12px 14px;
  background: var(--rd-bg-soft);
}

.rd-name-row {
  display: flex;
  align-items: baseline;
  gap: 16px;
  padding-bottom: 14px;
  border-bottom: 1px dotted var(--rd-line);
}
.rd-name-label {
  font-family: var(--rd-serif-en);
  font-style: italic;
  font-size: 13px;
  color: var(--rd-ink-mute);
  letter-spacing: 0.1em;
  white-space: nowrap;
  flex-shrink: 0;
}
.rd-name-row .rd-input { border: none; flex: 1; font-size: 17px; }

/* ── book list ────────────────────────────────── */
.rd-book-list {
  list-style: none;
  padding: 0;
  margin: 8px 0 0;
  display: flex;
  flex-direction: column;
  gap: 20px;
}
.rd-book-row {
  display: grid;
  grid-template-columns: 48px 1fr auto;
  gap: 16px;
  align-items: start;
  padding-bottom: 18px;
  border-bottom: 1px dotted var(--rd-line-soft);
}
.rd-book-roman {
  font-family: var(--rd-serif-en);
  font-style: italic;
  font-size: 22px;
  color: var(--rd-accent);
  letter-spacing: 0.02em;
  padding-top: 6px;
  line-height: 1;
  user-select: none;
}
.rd-book-fields { display: flex; flex-direction: column; gap: 6px; min-width: 0; }
.rd-book-title-row { display: flex; gap: 14px; align-items: baseline; flex-wrap: wrap; }
.rd-book-title-row .rd-book-title-input { flex: 1 1 260px; font-size: 16px; font-weight: 500; }
.rd-book-meta-row { display: flex; gap: 14px; align-items: baseline; flex-wrap: wrap; }
.rd-book-meta-row .rd-input {
  font-size: 13px;
  font-family: var(--rd-serif-en);
  font-style: italic;
  color: var(--rd-ink-mute);
  opacity: 0.55;
  border-bottom-color: transparent;
  transition: opacity 0.3s ease, color 0.3s ease, border-bottom-color 0.3s ease;
}
.rd-book-meta-row .rd-input::placeholder {
  color: var(--rd-ink-mute);
  opacity: 0.7;
}
.rd-book-meta-row .rd-input:hover {
  opacity: 0.85;
  border-bottom-color: var(--rd-line-soft);
}
.rd-book-meta-row .rd-input:focus,
.rd-book-meta-row .rd-input:not(:placeholder-shown) {
  opacity: 1;
  color: var(--rd-ink-soft);
  border-bottom-color: var(--rd-line);
}
.rd-book-meta-row .rd-input:focus { border-bottom-color: var(--rd-accent); }
.rd-book-meta-row .rd-book-author-input { flex: 1 1 200px; }
.rd-book-meta-row .rd-book-year-input { flex: 0 0 80px; }

.rd-book-struck {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  color: var(--rd-ink-mute);
  font-family: var(--rd-serif-cn);
  letter-spacing: 0.06em;
  cursor: pointer;
  user-select: none;
  padding-top: 6px;
  white-space: nowrap;
}
.rd-book-struck input { accent-color: var(--rd-accent); }

/* autocomplete suggestions */
.rd-book-title-wrap { position: relative; flex: 1 1 260px; min-width: 200px; }
.rd-book-title-wrap .rd-book-title-input { width: 100%; }
.rd-suggest {
  position: absolute;
  top: calc(100% + 2px);
  left: 0;
  right: 0;
  background: var(--rd-bg-soft);
  border: 1px solid var(--rd-line);
  border-radius: var(--rd-radius);
  max-height: 200px;
  overflow-y: auto;
  z-index: 30;
  box-shadow: 0 4px 16px rgba(79,69,54,0.1);
  display: none;
}
.rd-suggest.visible { display: block; }
.rd-suggest-item {
  padding: 8px 12px;
  cursor: pointer;
  font-size: 14px;
  color: var(--rd-ink);
  border-bottom: 1px dotted var(--rd-line-soft);
}
.rd-suggest-item:last-child { border-bottom: none; }
.rd-suggest-item:hover, .rd-suggest-item.active {
  background: var(--rd-paper);
  color: var(--rd-accent);
}
.rd-suggest-item em {
  font-style: normal;
  color: var(--rd-ink-mute);
  font-family: var(--rd-serif-en);
  font-size: 12px;
  margin-left: 8px;
}

.rd-sentence-block {
  margin-top: 8px;
  padding-top: 24px;
  border-top: 1px solid var(--rd-line-soft);
}
.rd-sentence-head { margin-bottom: 12px; }
.rd-sentence-title {
  font-family: var(--rd-serif-cn);
  font-size: 17px;
  color: var(--rd-ink);
  letter-spacing: 0.14em;
  margin-bottom: 4px;
}
.rd-sentence-sub {
  font-size: 12px;
  color: var(--rd-ink-mute);
  letter-spacing: 0.04em;
  font-family: var(--rd-serif-cn);
}

.rd-submit-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 16px;
  gap: 16px;
  flex-wrap: wrap;
}
.rd-submit-tip {
  font-size: 12px;
  color: var(--rd-ink-mute);
  letter-spacing: 0.04em;
  font-family: var(--rd-serif-cn);
}

/* ── PART 02 提交后的海报视图 ─────────────────── */
.rd-mine {
  margin-top: 8px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 24px;
}
.rd-mine-card {
  width: 100%;
  max-width: 560px;
  background: var(--rd-paper);
  border: 1px solid var(--rd-line);
  border-radius: var(--rd-radius-lg);
  padding: 44px 44px 36px;
  position: relative;
  overflow: hidden;
}
.rd-mine-card::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--rd-accent), var(--rd-gold), var(--rd-accent));
}
.rd-mine-head {
  text-align: center;
  margin-bottom: 28px;
}
.rd-mine-kicker {
  font-family: var(--rd-serif-en);
  font-style: italic;
  font-size: 11px;
  letter-spacing: 0.26em;
  color: var(--rd-accent);
  text-transform: uppercase;
  margin-bottom: 12px;
}
.rd-mine-name {
  font-family: var(--rd-serif-cn);
  font-weight: 500;
  font-size: 24px;
  color: var(--rd-ink);
  letter-spacing: 0.18em;
  margin: 0 0 6px;
}
.rd-mine-suffix {
  font-weight: 400;
  color: var(--rd-ink-soft);
  font-size: 20px;
}
.rd-mine-save-row {
  display: flex;
  justify-content: flex-end;
  width: 100%;
  max-width: 560px;
  margin: -8px 0 -4px;
}
.rd-mine-save-link {
  background: transparent;
  border: none;
  padding: 0;
  margin: 0;
  font-family: var(--rd-serif-cn);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--rd-ink-mute);
  text-decoration: underline;
  text-decoration-style: dotted;
  cursor: pointer;
}
.rd-mine-save-link:hover {
  color: var(--rd-accent);
}
.rd-mine-sub {
  font-family: var(--rd-serif-en);
  font-style: italic;
  font-size: 12px;
  color: var(--rd-ink-mute);
  letter-spacing: 0.12em;
}
.rd-mine-list {
  list-style: none;
  padding: 0;
  margin: 0 0 28px;
}
.rd-mine-item {
  display: grid;
  grid-template-columns: 48px 1fr auto;
  gap: 16px;
  align-items: baseline;
  padding: 14px 0;
  border-bottom: 1px dotted var(--rd-line-soft);
}
.rd-mine-item:last-child { border-bottom: none; }
.rd-mine-roman {
  font-family: var(--rd-serif-en);
  font-style: italic;
  font-size: 20px;
  color: var(--rd-accent);
  line-height: 1;
}
.rd-mine-title {
  font-family: var(--rd-serif-cn);
  font-size: 17px;
  color: var(--rd-ink);
  letter-spacing: 0.08em;
  line-height: 1.45;
  font-weight: 500;
}
.rd-mine-meta {
  display: block;
  font-family: var(--rd-serif-en);
  font-style: italic;
  font-size: 12px;
  color: var(--rd-ink-mute);
  margin-top: 4px;
  letter-spacing: 0.04em;
}
.rd-mine-struck {
  font-family: var(--rd-serif-en);
  font-style: italic;
  font-size: 11px;
  color: var(--rd-accent-soft);
  letter-spacing: 0.06em;
  white-space: nowrap;
}
.rd-mine-foot {
  padding-top: 18px;
  border-top: 1px solid var(--rd-line-soft);
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  font-family: var(--rd-serif-en);
  font-style: italic;
  font-size: 11px;
  color: var(--rd-ink-mute);
  letter-spacing: 0.18em;
}
.rd-mine-brand { color: var(--rd-accent); }

.rd-mine-actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  justify-content: center;
}
.rd-btn-danger {
  border-color: #d08c8c !important;
  color: #a04b4b !important;
}
.rd-btn-danger:hover {
  background: #fcebeb !important;
  border-color: #a04b4b !important;
  color: #7a2c2c !important;
}
.rd-mine-tip {
  font-size: 12px;
  color: var(--rd-ink-mute);
  letter-spacing: 0.04em;
  text-align: center;
  min-height: 16px;
}

@media (max-width: 720px) {
  .rd-mine-card { padding: 32px 22px 28px; }
  .rd-mine-name { font-size: 20px; }
  .rd-mine-suffix { font-size: 16px; }
  .rd-mine-title { font-size: 15px; }
  .rd-mine-item { grid-template-columns: 36px 1fr; }
  .rd-mine-struck { grid-column: 2; }
}

/* ── PART 03 constellation ────────────────────── */
.rd-constellation-stage {
  position: relative;
  margin-top: 8px;
  min-height: 520px;
  background: radial-gradient(ellipse at center, var(--rd-bg-soft) 0%, var(--rd-paper) 60%, var(--rd-paper) 100%);
  border: 1px solid var(--rd-line-soft);
  border-radius: var(--rd-radius-lg);
  overflow: hidden;
}
.rd-constellation-empty {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 32px;
  text-align: center;
  color: var(--rd-ink-mute);
  font-size: 14px;
  letter-spacing: 0.08em;
  font-family: var(--rd-serif-cn);
}
.rd-constellation-svg {
  width: 100%;
  height: 100%;
  min-height: 520px;
  display: block;
}
.rd-constellation-svg text { font-family: var(--rd-serif-cn); fill: var(--rd-ink-soft); }
.rd-node-me { fill: var(--rd-accent); }
.rd-node-other { fill: var(--rd-ink); cursor: pointer; transition: fill 0.2s ease; }
.rd-node-other:hover, .rd-node-other.active { fill: var(--rd-accent); }
.rd-node-label { font-size: 12px; letter-spacing: 0.08em; pointer-events: none; }
.rd-node-label-me { font-size: 13px; fill: var(--rd-accent); font-style: italic; font-family: var(--rd-serif-en); }
.rd-edge { stroke: var(--rd-line); stroke-width: 1; fill: none; }
.rd-edge.dashed { stroke-dasharray: 4 4; }
.rd-edge.active { stroke: var(--rd-accent); stroke-width: 1.5; }
.rd-edge-title {
  font-size: 10px;
  fill: var(--rd-ink-mute);
  font-style: italic;
  font-family: var(--rd-serif-en);
  letter-spacing: 0.04em;
}

.rd-constellation-details {
  position: absolute;
  top: 16px;
  right: 16px;
  width: 280px;
  max-height: calc(100% - 32px);
  background: var(--rd-bg-soft);
  border: 1px solid var(--rd-line);
  border-radius: var(--rd-radius-lg);
  padding: 20px 22px;
  box-shadow: 0 4px 20px rgba(79,69,54,0.12);
  overflow-y: auto;
  font-size: 13px;
}
.rd-detail-close {
  position: absolute;
  top: 8px;
  right: 10px;
  background: transparent;
  border: none;
  color: var(--rd-ink-mute);
  cursor: pointer;
  font-size: 20px;
  line-height: 1;
}
.rd-detail-name {
  font-family: var(--rd-serif-cn);
  font-size: 18px;
  color: var(--rd-ink);
  letter-spacing: 0.1em;
  margin-bottom: 8px;
}
.rd-detail-name .rd-link {
  color: var(--rd-accent);
  text-decoration: none;
  border-bottom: 1px dotted var(--rd-accent-soft);
}
.rd-detail-name .rd-link:hover { color: var(--rd-ink); }
.rd-detail-kicker {
  font-family: var(--rd-serif-en);
  font-style: italic;
  font-size: 11px;
  color: var(--rd-ink-mute);
  letter-spacing: 0.1em;
  margin-bottom: 16px;
}
.rd-detail-books {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.rd-detail-books li {
  padding: 8px 0;
  border-bottom: 1px dotted var(--rd-line-soft);
  color: var(--rd-ink);
  font-family: var(--rd-serif-cn);
  letter-spacing: 0.04em;
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.rd-detail-books li:last-child { border-bottom: none; }
.rd-detail-book-title { font-size: 13px; color: var(--rd-ink); }
.rd-detail-book-meta {
  font-family: var(--rd-serif-en);
  font-style: italic;
  font-size: 11px;
  color: var(--rd-ink-mute);
  letter-spacing: 0.04em;
}
.rd-detail-book-shared .rd-detail-book-title {
  color: var(--rd-accent);
  font-weight: 500;
}
.rd-detail-book-shared::before {
  content: "·";
  display: inline-block;
  color: var(--rd-accent);
  font-weight: 700;
  margin-right: 4px;
  float: left;
  line-height: 1.4;
}

/* ── PART 04 top 10 ───────────────────────────── */
.rd-top-card {
  background: var(--rd-paper);
  border: 1px solid var(--rd-line);
  border-radius: var(--rd-radius-lg);
  padding: 56px 56px 48px;
  position: relative;
  overflow: hidden;
  margin-top: 8px;
}
.rd-top-card::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--rd-accent), var(--rd-gold), var(--rd-accent));
}
.rd-top-head { text-align: center; margin-bottom: 36px; }
.rd-top-kicker {
  font-family: var(--rd-serif-en);
  font-style: italic;
  font-size: 12px;
  color: var(--rd-accent);
  letter-spacing: 0.26em;
  margin-bottom: 10px;
  text-transform: uppercase;
}
.rd-top-title {
  font-family: var(--rd-serif-cn);
  font-weight: 500;
  font-size: 34px;
  color: var(--rd-ink);
  letter-spacing: 0.2em;
  margin: 0 0 8px;
}
.rd-top-sub {
  font-family: var(--rd-serif-cn);
  font-size: 13px;
  color: var(--rd-ink-mute);
  letter-spacing: 0.1em;
}
.rd-top-list {
  list-style: none;
  padding: 0;
  margin: 0;
  counter-reset: rd-top;
}
.rd-top-item {
  display: grid;
  grid-template-columns: 60px 1fr auto;
  gap: 20px;
  align-items: baseline;
  padding: 18px 0;
  border-bottom: 1px dotted var(--rd-line);
  counter-increment: rd-top;
}
.rd-top-item:last-child { border-bottom: none; }
.rd-top-rank {
  font-family: var(--rd-serif-en);
  font-style: italic;
  font-size: 28px;
  color: var(--rd-ink-mute);
  letter-spacing: 0.02em;
  text-align: right;
}
.rd-top-item.podium .rd-top-rank { color: var(--rd-accent); font-weight: 700; font-size: 32px; }
.rd-top-name {
  font-family: var(--rd-serif-cn);
  font-size: 19px;
  color: var(--rd-ink);
  letter-spacing: 0.1em;
  line-height: 1.4;
  text-wrap: pretty;
}
.rd-top-item.podium .rd-top-name { font-weight: 500; }
.rd-top-voices {
  font-family: var(--rd-serif-en);
  font-style: italic;
  font-size: 13px;
  color: var(--rd-ink-mute);
  letter-spacing: 0.08em;
  white-space: nowrap;
}
.rd-top-voices strong {
  color: var(--rd-accent);
  font-weight: 700;
  font-style: normal;
  font-family: var(--rd-serif-en);
  font-size: 15px;
  margin-right: 2px;
}

.rd-top-foot {
  margin-top: 36px;
  padding-top: 20px;
  border-top: 1px solid var(--rd-line-soft);
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--rd-ink-mute);
}
.rd-top-brand {
  font-family: var(--rd-serif-en);
  font-style: italic;
  letter-spacing: 0.2em;
  color: var(--rd-accent);
}

.rd-top-more-btn {
  display: block;
  margin: 20px auto 0;
  padding: 10px 26px;
  background: transparent;
  border: 1px solid var(--rd-line);
  color: var(--rd-ink-soft);
  font-family: var(--rd-serif-cn);
  font-size: 12px;
  letter-spacing: 0.16em;
  border-radius: 999px;
  cursor: pointer;
  transition: all 0.2s ease;
}
.rd-top-more-btn:hover {
  border-color: var(--rd-ink);
  color: var(--rd-ink);
  background: var(--rd-paper);
}
.rd-top-more-list {
  list-style: none;
  padding: 22px 28px;
  margin: 16px 0 0;
  background: var(--rd-bg-soft);
  border: 1px solid var(--rd-line-soft);
  border-radius: var(--rd-radius-lg);
  animation: rd-fadein 0.35s ease both;
}
.rd-top-more-list li {
  display: grid;
  grid-template-columns: 44px 1fr auto;
  gap: 14px;
  padding: 10px 0;
  border-bottom: 1px dotted var(--rd-line-soft);
  align-items: baseline;
}
.rd-top-more-list li:last-child { border-bottom: none; }
.rd-top-more-rank {
  font-family: var(--rd-serif-en);
  font-style: italic;
  color: var(--rd-ink-mute);
  font-size: 15px;
  text-align: right;
}
.rd-top-more-name {
  font-family: var(--rd-serif-cn);
  font-size: 14.5px;
  color: var(--rd-ink);
  letter-spacing: 0.06em;
}
.rd-top-more-voices {
  font-family: var(--rd-serif-en);
  font-style: italic;
  font-size: 11px;
  color: var(--rd-ink-mute);
  letter-spacing: 0.06em;
  white-space: nowrap;
}

.rd-top-actions {
  display: flex;
  justify-content: center;
  gap: 12px;
  margin-top: 28px;
  flex-wrap: wrap;
}
.rd-top-empty {
  text-align: center;
  padding: 40px 20px;
  color: var(--rd-ink-mute);
  font-size: 14px;
  letter-spacing: 0.06em;
}

/* ── auth modal (reused forum pattern) ────────── */
.auth-modal {
  position: fixed;
  inset: 0;
  background: rgba(79, 69, 54, 0.35);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 100;
  padding: 20px;
}
.auth-modal.active { display: flex; }
.auth-dialog {
  background: var(--rd-bg-soft);
  border: 1px solid var(--rd-line);
  border-radius: var(--rd-radius-lg);
  padding: 28px 32px;
  max-width: 400px;
  width: 100%;
  position: relative;
}
.auth-dialog-top {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 20px;
}
.auth-modal-title {
  font-family: var(--rd-serif-cn);
  font-size: 20px;
  color: var(--rd-ink);
  letter-spacing: 0.14em;
  white-space: nowrap;
}
.auth-close {
  background: transparent;
  border: none;
  color: var(--rd-ink-mute);
  font-size: 24px;
  cursor: pointer;
  line-height: 1;
  padding: 0 4px;
}
.auth-close:hover { color: var(--rd-ink); }
.auth-modal-msg {
  font-size: 13px;
  color: var(--rd-accent);
  min-height: 18px;
  margin-bottom: 12px;
  letter-spacing: 0.04em;
}
.row {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.auth-dialog .rd-input {
  border: 1px solid var(--rd-line);
  border-radius: var(--rd-radius);
  padding: 10px 14px;
  background: var(--rd-paper);
}
.auth-switch {
  margin-top: 14px;
  font-size: 13px;
  color: var(--rd-ink-mute);
  text-align: center;
}
.auth-switch-btn {
  background: transparent;
  border: none;
  color: var(--rd-accent);
  cursor: pointer;
  font-family: var(--rd-serif-cn);
  font-size: 13px;
  padding: 0 4px;
  text-decoration: underline;
  text-decoration-style: dotted;
  white-space: nowrap;
}

/* ── responsive ───────────────────────────────── */
@media (max-width: 720px) {
  .rd-app { padding: 18px 14px 80px; }
  .rd-topbar {
    display: grid;
    grid-template-columns: auto 1fr;
    align-items: start;
    gap: 10px;
    position: relative;
  }
  .home-btn {
    grid-column: 1;
    justify-self: start;
    align-self: start;
  }
  .rd-title-wrap {
    grid-column: 1 / -1;
    justify-self: center;
    text-align: center;
    width: 100%;
  }
  .auth-entry {
    grid-column: 1 / -1;
    justify-content: center;
    width: 100%;
  }
  .rd-part-inner { padding: 32px 22px 40px; }
  .rd-part-switch {
    gap: 8px;
    margin-bottom: 14px;
  }
  .rd-part-switch-btn {
    font-size: 11px;
    letter-spacing: 0.06em;
    padding: 6px 10px;
  }
  .rd-invitation { padding: 48px 22px 56px; }
  .rd-invitation-title { font-size: 30px; letter-spacing: 0.16em; }
  .rd-part-title { font-size: 22px; }
  .rd-top-card { padding: 36px 22px 32px; }
  .rd-top-title { font-size: 24px; }
  .rd-top-item { grid-template-columns: 40px 1fr; gap: 12px; }
  .rd-top-voices { grid-column: 2; margin-top: 4px; }
  .rd-top-rank { font-size: 22px; }
  .rd-book-row { grid-template-columns: 28px 1fr; }
  .rd-book-struck { grid-column: 2; padding-top: 0; }
  .rd-constellation-details {
    position: static;
    width: auto;
    margin: 16px;
    max-height: none;
  }
  .rd-logo { font-size: 18px; }
}