/* 梦行家 · 不归 — Kuxin Press web reader
   设计语言来源：排版/不归_内文排版.html
   靛蓝 #283592 · 冷白纸面 #FCFCFD · 墨色 #15171C · 夜色 #0C0D11 */

:root {
  --indigo: #283592;
  --indigo-soft: rgba(40, 53, 146, 0.4);
  --paper: #FCFCFD;
  --ink: #15171C;
  --ink-soft: #3A3C43;
  --ink-shadow: #20222A;
  --gray: #8A8B93;
  --gray-light: #9A9CA3;
  --night-bg: #0C0D11;
  --night-text: #E9E6DE;
  --night-title: #F2EFE8;
  --serif: 'Noto Serif SC', serif;
  --sans: 'Noto Sans SC', sans-serif;
  --bodoni: 'Bodoni Moda', serif;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; font-family: var(--serif); }

/* ============ 阅读器主题 ============ */
body[data-theme='paper'] {
  --bg: var(--paper);
  --fg: var(--ink);
  --fg-soft: var(--ink-soft);
  --fg-shadow: var(--ink-shadow);
  --muted: var(--gray);
  --accent: var(--indigo);
  --accent-line: var(--indigo-soft);
  --chrome-bg: rgba(252, 252, 253, 0.94);
  --chrome-border: rgba(21, 23, 28, 0.08);
  --overlay-bg: rgba(252, 252, 253, 0.98);
  background: var(--bg);
  color: var(--fg);
}
body[data-theme='night'] {
  --bg: var(--night-bg);
  --fg: var(--night-text);
  --fg-soft: #C9C6BE;
  --fg-shadow: #D4D1C8;
  --muted: #6B6C74;
  --accent: #6B7BD6;
  --accent-line: rgba(107, 123, 214, 0.4);
  --chrome-bg: rgba(12, 13, 17, 0.94);
  --chrome-border: rgba(233, 230, 222, 0.08);
  --overlay-bg: rgba(12, 13, 17, 0.98);
  background: var(--bg);
  color: var(--fg);
}

/* ============ 落地页 ============ */
.landing {
  background: var(--night-bg);
  color: var(--night-text);
  min-height: 100vh;
  font-family: var(--serif);
}
.landing-inner {
  max-width: 640px;
  margin: 0 auto;
  padding: 72px 28px 96px;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}
.imprint-mark {
  font-family: var(--bodoni);
  font-size: 11px;
  letter-spacing: 0.32em;
  color: var(--gray);
  text-transform: uppercase;
  margin-bottom: 64px;
}
.series-mark {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 34px;
}
.series-mark .line { width: 22px; height: 2px; background: var(--indigo); }
.series-mark .name {
  font-weight: 500;
  font-size: 16px;
  letter-spacing: 0.5em;
  padding-left: 0.5em;
  color: #C9C6BE;
}
.book-title {
  font-weight: 600;
  font-size: 72px;
  letter-spacing: 0.24em;
  padding-left: 0.24em;
  line-height: 1;
  margin: 0 0 30px;
  color: var(--night-title);
}
.book-author {
  font-size: 17px;
  letter-spacing: 0.32em;
  padding-left: 0.32em;
  color: #A8A59D;
  margin-bottom: 56px;
}
.cover {
  width: min(320px, 78vw);
  box-shadow: 0 28px 70px -20px rgba(0, 0, 0, 0.85), 0 4px 14px rgba(0, 0, 0, 0.4);
  margin-bottom: 56px;
}
.cover img { display: block; width: 100%; height: auto; }
.blurb {
  font-size: 15.5px;
  line-height: 2.1;
  color: #C9C6BE;
  text-align: justify;
  margin-bottom: 48px;
}
.diamond {
  width: 7px;
  height: 7px;
  background: var(--indigo);
  transform: rotate(45deg);
  margin: 0 auto 48px;
}
.price {
  font-family: var(--bodoni);
  font-size: 22px;
  letter-spacing: 0.08em;
  color: var(--night-title);
  margin-bottom: 8px;
}
.price-note {
  font-family: var(--sans);
  font-size: 12.5px;
  color: var(--gray);
  margin-bottom: 36px;
  line-height: 1.8;
}
.btn {
  display: inline-block;
  font-family: var(--serif);
  font-weight: 500;
  font-size: 15px;
  letter-spacing: 0.24em;
  padding: 15px 44px 15px calc(44px + 0.24em);
  text-decoration: none;
  cursor: pointer;
  border: none;
  transition: opacity 0.2s;
}
.btn:hover { opacity: 0.88; }
.btn-primary { background: var(--indigo); color: #FCFCFD; }
.btn-ghost {
  background: none;
  border: 1px solid rgba(233, 230, 222, 0.28);
  color: var(--night-text);
}
.landing-actions { display: flex; flex-direction: column; gap: 16px; align-items: center; margin-bottom: 72px; }
.code-entry { margin-bottom: 72px; width: 100%; max-width: 340px; }
.code-entry-label {
  font-family: var(--sans);
  font-size: 12.5px;
  letter-spacing: 0.14em;
  color: var(--gray-light);
  margin-bottom: 14px;
}
.code-row { display: flex; gap: 10px; }
.code-row input {
  flex: 1;
  background: rgba(233, 230, 222, 0.06);
  border: 1px solid rgba(233, 230, 222, 0.2);
  color: var(--night-text);
  font-family: var(--bodoni);
  font-size: 15px;
  letter-spacing: 0.12em;
  padding: 12px 14px;
  text-transform: uppercase;
  outline: none;
}
.code-row input:focus { border-color: var(--indigo); }
.code-row button {
  background: none;
  border: 1px solid var(--indigo);
  color: #8B97E0;
  font-family: var(--serif);
  font-size: 14px;
  letter-spacing: 0.18em;
  padding: 12px 22px 12px calc(22px + 0.18em);
  cursor: pointer;
}
.code-error {
  font-family: var(--sans);
  font-size: 12px;
  color: #D06550;
  margin-top: 10px;
  min-height: 1em;
}
.landing-footer {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
}
.landing-footer .kuxin-cn {
  font-weight: 500;
  font-size: 13px;
  letter-spacing: 0.3em;
  padding-left: 0.3em;
  color: #A8A59D;
}
.landing-footer .kuxin-en {
  font-family: var(--bodoni);
  font-size: 10px;
  letter-spacing: 0.26em;
  color: var(--muted, #6B6C74);
}

/* ============ 阅读器 ============ */
.reader-chrome {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 18px;
  height: 52px;
  background: var(--chrome-bg);
  border-bottom: 1px solid var(--chrome-border);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}
.chrome-title {
  font-family: var(--sans);
  font-size: 11px;
  letter-spacing: 0.28em;
  color: var(--muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.chrome-group { display: flex; gap: 4px; }
.chrome-btn {
  background: none;
  border: none;
  color: var(--fg-soft);
  font-family: var(--serif);
  font-size: 15px;
  width: 38px;
  height: 38px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
}
.chrome-btn:hover { color: var(--accent); }

.reader-body {
  max-width: 620px;
  margin: 0 auto;
  padding: 120px 26px 80px;
}
.chapter-head { margin-bottom: 72px; }
.chapter-head .en {
  font-family: var(--bodoni);
  font-size: 12px;
  letter-spacing: 0.34em;
  color: var(--accent);
  text-transform: uppercase;
  margin-bottom: 20px;
}
.chapter-head .cn {
  font-weight: 600;
  font-size: 34px;
  letter-spacing: 0.2em;
  line-height: 1.3;
  color: var(--fg);
}
.chapter-head .rule {
  width: 52px;
  height: 2px;
  background: var(--accent);
  margin-top: 26px;
}

.section { margin-bottom: 56px; }
.section-marker {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  margin: 64px 0 44px;
}
.section-marker .line { width: 40px; height: 1px; background: var(--accent-line); }
.section-marker .num {
  font-weight: 500;
  font-size: 19px;
  letter-spacing: 0.1em;
  color: var(--accent);
}
.section-marker.shadow .num {
  background: var(--accent);
  color: var(--bg);
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  letter-spacing: 0;
}

.prose { font-size: var(--prose-size, 17px); line-height: 1.95; text-align: justify; }
.prose p { margin: 0; text-indent: 2em; }
.prose p.opener { text-indent: 0; margin-bottom: 0.85em; font-size: 1.06em; }
.section.shadow .prose { font-style: italic; color: var(--fg-shadow); }
.scene-break {
  display: flex;
  justify-content: center;
  margin: 40px 0;
}
.scene-break .diamond { margin: 0; }
.scene-break span {
  width: 7px;
  height: 7px;
  background: var(--accent);
  transform: rotate(45deg);
  display: block;
}

.chapter-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 96px;
  padding-top: 32px;
  border-top: 1px solid var(--chrome-border);
}
.chapter-nav button {
  background: none;
  border: none;
  font-family: var(--serif);
  font-size: 14.5px;
  letter-spacing: 0.14em;
  color: var(--accent);
  cursor: pointer;
  padding: 10px 0;
}
.chapter-nav button:disabled { color: var(--muted); cursor: default; opacity: 0.5; }
.chapter-nav .pos {
  font-family: var(--bodoni);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--muted);
}

/* 目录抽屉 */
.toc-drawer {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  width: min(320px, 86vw);
  background: var(--overlay-bg);
  border-left: 1px solid var(--chrome-border);
  z-index: 40;
  transform: translateX(100%);
  transition: transform 0.24s ease;
  overflow-y: auto;
  padding: 68px 0 40px;
}
.toc-drawer.open { transform: translateX(0); }
.toc-drawer h2 {
  font-family: var(--sans);
  font-size: 11px;
  letter-spacing: 0.3em;
  color: var(--muted);
  font-weight: 400;
  padding: 0 28px;
  margin: 0 0 18px;
}
.toc-item {
  display: block;
  width: 100%;
  text-align: left;
  background: none;
  border: none;
  font-family: var(--serif);
  font-size: 15px;
  letter-spacing: 0.06em;
  color: var(--fg-soft);
  padding: 12px 28px;
  cursor: pointer;
  line-height: 1.5;
}
.toc-item:hover { color: var(--accent); }
.toc-item.current { color: var(--accent); font-weight: 600; }
.toc-item .locked { font-size: 11px; color: var(--muted); margin-left: 8px; }
.scrim {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.3);
  z-index: 30;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.24s;
}
.scrim.show { opacity: 1; pointer-events: auto; }

/* 阅读码门 */
.gate {
  position: fixed;
  inset: 0;
  z-index: 50;
  background: var(--overlay-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 28px;
}
.gate.hidden { display: none; }
.gate-card { max-width: 380px; width: 100%; text-align: center; }
.gate-card .diamond { margin-bottom: 32px; }
.gate-card .diamond span {
  width: 8px; height: 8px; background: var(--accent);
  transform: rotate(45deg); display: inline-block;
}
.gate-card h1 {
  font-weight: 600;
  font-size: 26px;
  letter-spacing: 0.3em;
  padding-left: 0.3em;
  margin: 0 0 12px;
  color: var(--fg);
}
.gate-card .sub {
  font-family: var(--sans);
  font-size: 13px;
  color: var(--muted);
  line-height: 1.9;
  margin-bottom: 36px;
}
.gate-card input {
  width: 100%;
  background: none;
  border: 1px solid var(--chrome-border);
  border-bottom: 2px solid var(--accent);
  color: var(--fg);
  font-family: var(--bodoni);
  font-size: 17px;
  letter-spacing: 0.14em;
  text-align: center;
  text-transform: uppercase;
  padding: 14px;
  outline: none;
  margin-bottom: 18px;
}
.gate-card .btn-primary { background: var(--accent); width: 100%; }
.gate-card .code-error { text-align: center; }
.gate-card .back {
  display: inline-block;
  margin-top: 28px;
  font-family: var(--sans);
  font-size: 12.5px;
  color: var(--muted);
  text-decoration: none;
  letter-spacing: 0.1em;
}

.loading {
  font-family: var(--sans);
  font-size: 12.5px;
  letter-spacing: 0.2em;
  color: var(--muted);
  text-align: center;
  padding: 40vh 0;
}

@media (max-width: 520px) {
  .book-title { font-size: 54px; }
  .reader-body { padding-top: 96px; }
  .chapter-head .cn { font-size: 27px; }
}