:root {
  --bg0: #0a1210;
  --bg1: #12201c;
  --panel: #172622;
  --card: #1e302b;
  --ink: #f0ebe0;
  --muted: #9aab9f;
  --accent: #c4a35a;
  --accent-soft: #8f7340;
  --line: rgba(196, 163, 90, 0.22);
  --danger: #d96b5c;
  --ok: #6fbf9a;
  --font-display: "STSong", "Songti SC", "Noto Serif SC", "Source Han Serif SC", "SimSun", serif;
  --font-ui: "Microsoft YaHei UI", "PingFang SC", sans-serif;
  --fs: 42px;
}

* { box-sizing: border-box; }
html, body {
  margin: 0;
  min-height: 100%;
  background:
    radial-gradient(1200px 600px at 10% -10%, rgba(196, 163, 90, 0.12), transparent 55%),
    radial-gradient(900px 500px at 100% 0%, rgba(111, 191, 154, 0.08), transparent 50%),
    linear-gradient(180deg, var(--bg0), var(--bg1) 40%, #0d1714);
  color: var(--ink);
  font-family: var(--font-ui);
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.8' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.04'/%3E%3C/svg%3E");
  opacity: 0.35;
  z-index: 0;
}

.app { position: relative; z-index: 1; min-height: 100vh; }

.top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 12px 16px;
  border-bottom: 1px solid var(--line);
  background: rgba(10, 18, 16, 0.85);
  position: sticky;
  top: 0;
  z-index: 10;
}

.brand-btn {
  appearance: none;
  border: 0;
  background: transparent;
  padding: 0;
  cursor: pointer;
  text-align: left;
}
.brand {
  font-family: var(--font-display);
  font-size: 1.55rem;
  letter-spacing: 0.28em;
  color: var(--accent);
  margin: 0;
}

.nav-actions { display: flex; gap: 8px; flex-wrap: wrap; }
.desktop-only { display: flex; }
.mobile-only { display: none; }
.tabbar { display: none; }
.btn {
  appearance: none;
  border: 1px solid var(--line);
  background: var(--card);
  color: var(--ink);
  border-radius: 12px;
  padding: 12px 16px;
  font-size: 1rem;
  cursor: pointer;
  transition: transform .15s ease, background .15s ease, border-color .15s ease;
}
.btn:hover { transform: translateY(-1px); border-color: var(--accent-soft); }
.btn.primary {
  background: linear-gradient(180deg, #d4b56a, #a8883f);
  color: #1a1200;
  border-color: transparent;
  font-weight: 700;
}
.btn.danger { background: #5a2d28; border-color: #8a4038; color: #ffd8d2; }
.btn.ghost { background: transparent; }

.view { display: none !important; padding: 28px 32px; max-width: 1080px; margin: 0 auto; }
.view.active { display: block !important; animation: fade .28s ease; }
.view-reader { max-width: 920px; }
.lib-scroll { display: contents; } /* 手机不改变结构；电脑在 media 里改成滚动区 */

.chap-head {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  margin-bottom: 10px;
}
.chap-author {
  margin: 0;
  color: var(--muted);
  font-size: 0.9rem;
}
.chap-continue {
  background: rgba(196, 163, 90, 0.1);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 12px 14px;
  margin-bottom: 12px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
}
.chap-continue[hidden] { display: none !important; }
.chap-continue-tip {
  margin: 0;
  color: var(--muted);
  font-size: 0.9rem;
  flex: 1 1 12rem;
}
.chap-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.chap-item {
  appearance: none;
  width: 100%;
  text-align: left;
  border: 1px solid var(--line);
  background: var(--card);
  color: var(--ink);
  border-radius: 12px;
  padding: 12px 14px;
  cursor: pointer;
  font-family: var(--font-ui);
  font-size: 1rem;
  display: flex;
  justify-content: space-between;
  gap: 10px;
  align-items: center;
}
.chap-item:hover { border-color: var(--accent); }
.chap-item .idx {
  color: var(--accent);
  font-family: var(--font-display);
  min-width: 2.2rem;
}
.chap-item .name { flex: 1; }
.chap-item .meta { color: var(--muted); font-size: 0.85rem; }
.chap-item.current { border-color: var(--ok); background: rgba(111, 191, 154, 0.08); }

.vip-block {
  margin-bottom: 18px;
  padding: 14px;
  border: 1px solid rgba(196, 163, 90, 0.35);
  border-radius: 16px;
  background: rgba(196, 163, 90, 0.06);
}
.vip-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 8px;
}
.vip-head .sub-title { margin: 0; color: var(--accent); }
.vip-actions { display: flex; flex-wrap: wrap; gap: 8px; }
.vip-hint { color: var(--muted); font-size: 0.88rem; margin: 0 0 10px; }
.vip-form {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  align-items: center;
}
.vip-form input {
  flex: 1 1 140px;
  min-height: 42px;
  border-radius: 10px;
  border: 1px solid var(--line);
  background: rgba(0, 0, 0, 0.25);
  color: var(--text);
  padding: 8px 12px;
  font-size: 1rem;
}
.vip-status { min-height: 1.2em; margin: 8px 0 0; font-size: 0.88rem; color: var(--muted); }
.vip-status.warn { color: #d96b5c; }
.vip-status.ok { color: var(--ok); }
.btn.ghost {
  border-color: transparent;
  color: var(--muted);
  background: transparent;
}
.progress-tip { color: var(--ok); font-size: 0.82rem; margin: 6px 0 0; }
.card .progress-tip {
  margin: 8px 0 0;
  color: var(--ok);
  font-size: 0.82rem;
}
@keyframes fade { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: none; } }

.hero {
  min-height: calc(100vh - 120px);
  align-content: center;
  justify-items: start;
  gap: 16px;
  padding: 12vh 8vw 14vh;
  max-width: none;
}
.view.hero.active {
  display: grid !important;
  animation: fade .28s ease;
}
.hero-title {
  font-family: var(--font-display);
  font-size: clamp(4rem, 8vw, 6rem);
  letter-spacing: 0.4em;
  margin: 0;
  color: var(--accent);
  text-indent: 0.4em;
}
.hero-lead {
  font-size: 1.2rem;
  line-height: 1.5;
  color: var(--muted);
  margin: 0;
  max-width: 20rem;
}
.hero-cta { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 8px; }
.hero-cta .btn { min-width: 8.5rem; min-height: 52px; font-size: 1.05rem; }

.section-title {
  font-family: var(--font-display);
  font-size: 1.6rem;
  letter-spacing: 0.18em;
  color: var(--accent);
  margin: 8px 0 10px;
}
.sub-title {
  font-family: var(--font-display);
  font-size: 1.15rem;
  letter-spacing: 0.12em;
  color: var(--muted);
  margin: 22px 0 12px;
}
.lib-head {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 4px;
}
.lib-tip {
  color: var(--muted);
  margin: 0 0 8px;
  font-size: 0.92rem;
  line-height: 1.45;
}
.upload-status {
  min-height: 1.3em;
  color: var(--ok);
  margin: 0 0 8px;
}
.upload-status.warn { color: var(--danger); }
.card.local { border-color: rgba(111, 191, 154, 0.35); }
.card .card-actions {
  display: flex;
  gap: 8px;
  margin-top: 12px;
}
.card .card-actions .btn {
  padding: 8px 12px;
  font-size: 0.9rem;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 14px;
}
.card {
  background: linear-gradient(160deg, rgba(30,48,43,.95), rgba(18,32,28,.92));
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 18px;
  cursor: pointer;
  transition: transform .18s ease, border-color .18s ease;
}
.card:hover { transform: translateY(-3px); border-color: var(--accent); }
.card .tag {
  display: inline-block;
  font-size: 0.75rem;
  color: var(--ok);
  border: 1px solid rgba(111,191,154,.35);
  border-radius: 999px;
  padding: 2px 10px;
  margin-bottom: 10px;
}
.card h3 {
  font-family: var(--font-display);
  font-size: 1.45rem;
  margin: 0 0 6px;
  letter-spacing: 0.08em;
}
.card .author { color: var(--accent); font-size: 0.95rem; margin-bottom: 8px; }
.card .desc { color: var(--muted); font-size: 0.92rem; line-height: 1.55; margin: 0; }

.reader-shell {
  display: grid;
  gap: 12px;
}
.reader-toolbar {
  display: flex;
  gap: 8px;
  align-items: center;
  flex-wrap: wrap;
}
.font-group {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-left: auto;
}
.controls {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 14px;
  align-items: center;
  background: rgba(23, 38, 34, 0.72);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 10px 12px;
}
.controls[hidden] { display: none !important; }
.controls label {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--muted);
  font-size: 0.9rem;
}
.controls select, .controls input[type="range"] {
  background: var(--card);
  color: var(--ink);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 8px 10px;
  min-width: 120px;
}
.controls select { max-width: 200px; }
.sleep-count { color: var(--muted); font-size: 0.88rem; min-width: 4.5rem; }
.play-bar, .play-sub, .bottom-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
  align-items: center;
  margin-top: 4px;
}
.play-main { min-width: 8rem; }

.stage {
  background: radial-gradient(circle at 20% 0%, rgba(196,163,90,.08), transparent 40%), var(--panel);
  border: 1px solid var(--line);
  border-radius: 20px;
  min-height: 58vh;
  padding: 36px 48px 40px;
  display: flex;
  flex-direction: column;
}
.meta {
  color: var(--muted);
  font-size: 0.95rem;
  margin-bottom: 12px;
}
.chapter {
  font-family: var(--font-display);
  color: var(--accent);
  font-size: 1.35rem;
  letter-spacing: 0.12em;
  margin: 0 0 18px;
}
.para {
  font-family: var(--font-display);
  font-size: var(--fs);
  line-height: 1.85;
  letter-spacing: 0.06em;
  margin: 0;
  flex: 1;
  white-space: pre-wrap;
  word-break: break-word;
}
.status {
  text-align: center;
  color: var(--muted);
  min-height: 1.2em;
  margin-top: 6px;
  font-size: 0.9rem;
}
.status.warn { color: var(--danger); }
.status.ok { color: var(--ok); }

.about {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 20px;
  padding: 28px 32px;
  line-height: 1.7;
  max-width: 560px;
}
.about h2 {
  font-family: var(--font-display);
  color: var(--accent);
  letter-spacing: 0.16em;
  margin-top: 0;
}
.about a { color: var(--accent); }
.about-links { color: var(--muted); }
.inline-link {
  color: var(--accent);
  text-decoration: underline;
  text-underline-offset: 2px;
}
.lib-tip.desktop-only-tip { display: block; }
@media (max-width: 720px) {
  .lib-tip.desktop-only-tip { display: none !important; }
}
.about-facts {
  margin: 12px 0 0;
  padding-left: 1.1em;
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.7;
}
.about-copy { color: var(--muted); margin-top: 18px; font-size: 0.9rem; }
.foot {
  text-align: center;
  color: var(--muted);
  font-size: 0.85rem;
  padding: 28px 16px 40px;
}

/* —— 电脑版：一屏内，进站不整页下滑 —— */
@media (min-width: 721px) {
  html, body {
    height: 100%;
    overflow: hidden;
  }
  .app {
    height: 100vh;
    height: 100dvh;
    display: flex;
    flex-direction: column;
    overflow: hidden;
  }
  .foot { display: none !important; }

  .top {
    flex: 0 0 auto;
    width: 100%;
    max-width: 1120px;
    margin: 0 auto;
    padding: 12px 28px;
    border-bottom: 1px solid var(--line);
    background: rgba(10, 18, 16, 0.92);
  }
  .brand { font-size: 1.45rem; letter-spacing: 0.24em; }
  .nav-actions { align-items: center; }
  .nav-actions .btn.ghost {
    border-color: transparent;
    color: var(--muted);
    padding: 8px 12px;
  }
  .nav-actions .btn.ghost:hover {
    color: var(--accent);
    background: rgba(196, 163, 90, 0.08);
  }
  .nav-actions .btn.primary {
    min-height: 40px;
    padding: 8px 16px;
  }

  .view {
    flex: 1 1 auto;
    min-height: 0;
    width: 100%;
    max-width: 1120px;
    margin: 0 auto;
    padding: 16px 28px 20px;
    overflow: hidden;
    display: none !important;
  }
  .view.active {
    display: flex !important;
    flex-direction: column;
    animation: none;
  }
  .view.hero.active {
    display: grid !important;
  }

  /* 书库：顶栏固定，卡片区内部滚动 */
  .view-library .lib-head { margin-bottom: 6px; }
  .view-library .section-title { font-size: 1.25rem; margin: 0; }
  .view-library .upload-status { min-height: 1.1em; margin: 0 0 6px; font-size: 0.88rem; }
  .view-library .sub-title { margin: 10px 0 8px; font-size: 0.95rem; }
  .lib-scroll {
    display: block;
    flex: 1 1 auto;
    min-height: 0;
    overflow: auto;
    padding-bottom: 8px;
  }
  .grid {
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: 12px;
  }
  .card {
    min-height: 0;
    padding: 14px;
    border-radius: 14px;
  }
  .card .tag { margin-bottom: 6px; }
  .card h3 { font-size: 1.15rem; margin-bottom: 4px; }
  .card .author { font-size: 0.85rem; margin-bottom: 4px; }
  .card .desc {
    font-size: 0.82rem;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
  }
  .card .card-actions { margin-top: 8px; }

  /* 阅读：整屏分区，正文区内部滚 */
  .view-reader { max-width: 880px; }
  .reader-shell {
    flex: 1;
    min-height: 0;
    display: flex;
    flex-direction: column;
    gap: 10px;
  }
  .reader-toolbar,
  .controls,
  .play-bar,
  .status {
    flex: 0 0 auto;
  }
  .controls {
    padding: 8px 10px;
    gap: 8px 12px;
  }
  .stage {
    flex: 1 1 auto;
    min-height: 0;
    overflow: auto;
    padding: 22px 28px;
    border-radius: 16px;
  }
  .meta { margin-bottom: 6px; font-size: 0.85rem; }
  .chapter { margin-bottom: 10px; font-size: 1.15rem; }
  .para { max-width: 34em; }
  .play-bar { gap: 10px; margin: 0; }
  .play-bar .btn { min-width: 5.8rem; min-height: 44px; }
  .play-main { min-width: 7.5rem; }

  .about {
    margin: auto;
    max-width: 480px;
    padding: 22px 24px;
  }

  .view-chapters .chap-list {
    display: block;
    flex: 1 1 auto;
    min-height: 0;
    overflow: auto;
  }
  .view-chapters .chap-list .chap-item { margin-bottom: 8px; }

  body.reading .top { opacity: 0.85; }
  body.reading .top:hover { opacity: 1; }
}

.label-short { display: none; }
.mobile-hint { display: none; }
.desktop-hint { display: block; }

@media (max-width: 720px) {
  .desktop-only { display: none !important; }
  .mobile-only { display: inline-flex; }
  .label-full { display: none; }
  .label-short { display: inline; }
  .mobile-hint { display: block; }
  .desktop-hint { display: none; }

  .app {
    padding-bottom: calc(72px + env(safe-area-inset-bottom, 0px));
    min-height: 100dvh;
  }

  .top {
    padding: 10px 14px;
    padding-top: calc(10px + env(safe-area-inset-top, 0px));
  }
  .brand { font-size: 1.28rem; letter-spacing: 0.2em; }

  .view { padding: 12px 14px 10px; }
  .hero {
    min-height: calc(100dvh - 150px);
    padding: 10vh 5vw 6vh;
    gap: 10px;
    justify-items: start;
    align-content: center;
  }
  .hero-title {
    font-size: clamp(2.5rem, 15vw, 3.4rem);
    letter-spacing: 0.26em;
    margin: 0;
  }
  .hero-lead {
    font-size: 1.05rem;
    margin: 0;
    color: var(--muted);
  }
  .hero-cta {
    display: flex;
    gap: 10px;
    margin-top: 8px;
    width: 100%;
  }
  .hero-cta .btn {
    flex: 1;
    min-height: 50px;
    min-width: 0;
  }

  .lib-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    margin-bottom: 4px;
  }
  .section-title { font-size: 1.28rem; margin: 0; }
  .lib-tip {
    font-size: 0.82rem;
    margin: 0 0 8px;
    color: var(--muted);
  }
  .upload-status {
    min-height: 1.1em;
    margin: 0 0 8px;
    font-size: 0.82rem;
  }
  .sub-title {
    font-size: 0.92rem;
    margin: 14px 0 8px;
    letter-spacing: 0.04em;
    color: var(--muted);
  }

  /* VIP：拇指区友好、按钮等分 */
  .vip-block {
    margin-bottom: 12px;
    padding: 12px;
    border-radius: 14px;
  }
  .vip-head {
    margin-bottom: 6px;
    gap: 8px;
  }
  .vip-head .sub-title {
    margin: 0;
    font-size: 1rem;
    color: var(--accent);
  }
  .vip-actions-open:not([hidden]) {
    display: grid !important;
    grid-template-columns: 1.2fr 1fr 0.8fr;
    width: 100%;
    gap: 6px;
  }
  .vip-actions-open[hidden] { display: none !important; }
  .vip-actions-open .btn {
    min-height: 42px;
    padding: 8px 6px;
    font-size: 0.88rem;
    width: 100%;
    justify-content: center;
  }
  .vip-hint {
    font-size: 0.82rem;
    margin: 0 0 8px;
  }
  .vip-form {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 8px;
  }
  .vip-form input {
    min-height: 46px;
    font-size: 16px; /* 避免 iOS 自动放大 */
    border-radius: 12px;
  }
  .vip-form .btn {
    min-height: 46px;
    min-width: 4.5rem;
    padding: 10px 14px;
  }

  /* 书卡：单列大触控 */
  .grid {
    grid-template-columns: 1fr;
    gap: 10px;
  }
  .card {
    padding: 14px 14px 12px;
    border-radius: 14px;
    min-height: 0;
  }
  .card h3 { font-size: 1.15rem; margin-bottom: 2px; }
  .card .author { font-size: 0.82rem; margin-bottom: 4px; }
  .card .desc {
    font-size: 0.84rem;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
  }
  .card .card-actions {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px;
    margin-top: 10px;
  }
  .card .card-actions .btn {
    min-height: 44px;
    width: 100%;
  }

  /* 选章 */
  .chap-head { gap: 10px; margin-bottom: 8px; }
  .chap-continue {
    padding: 10px 12px;
    border-radius: 12px;
    margin-bottom: 10px;
  }
  .chap-continue .btn { min-height: 46px; width: 100%; }
  .chap-item {
    padding: 12px 12px;
    min-height: 52px;
    border-radius: 12px;
    margin-bottom: 8px;
  }
  .chap-item .name { font-size: 0.98rem; }
  .chap-pick-tip, #chap-pick-tip { font-size: 0.82rem; margin: 0 0 8px; }

  .reader-shell { gap: 8px; }
  .reader-toolbar {
    gap: 8px;
  }
  .reader-toolbar .btn { min-height: 44px; }
  .font-group {
    margin-left: auto;
  }
  .controls {
    align-items: stretch;
    padding: 10px;
    gap: 10px;
    border-radius: 14px;
  }
  .controls label {
    width: 100%;
    justify-content: space-between;
    font-size: 0.9rem;
  }
  .controls select,
  .controls input[type="range"] {
    max-width: none;
    flex: 1;
    min-width: 0;
  }
  .controls select { min-height: 40px; font-size: 16px; }

  .stage {
    min-height: 38vh;
    padding: 16px 14px 18px;
    border-radius: 14px;
  }
  .meta { font-size: 0.78rem; margin-bottom: 4px; }
  .chapter { font-size: 1rem; margin-bottom: 8px; }
  .para {
    font-size: max(28px, calc(var(--fs) * 0.8));
    line-height: 1.75;
  }

  .play-bar {
    position: sticky;
    bottom: calc(66px + env(safe-area-inset-bottom, 0px));
    z-index: 8;
    background: rgba(10, 18, 16, 0.94);
    border: 1px solid var(--line);
    border-radius: 16px;
    padding: 8px;
    margin: 0;
    gap: 6px;
    backdrop-filter: blur(8px);
  }
  .play-bar .btn {
    flex: 1 1 0;
    min-height: 48px;
    padding: 10px 6px;
    font-size: 0.88rem;
  }
  .play-main { flex: 1.35 1 0 !important; }
  .play-bar .btn:nth-child(n+4) { flex: 1 1 42%; }

  .btn { padding: 12px 14px; border-radius: 12px; }
  .status { min-height: 1em; font-size: 0.85rem; }

  .about {
    padding: 8px 2px 20px;
  }
  .about h2 { font-size: 1.35rem; }
  .about p { font-size: 0.95rem; line-height: 1.65; }
  .about-facts { font-size: 0.82rem; }

  .tabbar {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    position: fixed;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 20;
    background: rgba(10, 18, 16, 0.97);
    border-top: 1px solid var(--line);
    padding: 6px 8px calc(6px + env(safe-area-inset-bottom, 0px));
    backdrop-filter: blur(10px);
  }
  .tab {
    appearance: none;
    border: 0;
    background: transparent;
    color: var(--muted);
    font-size: 0.92rem;
    min-height: 48px;
    border-radius: 12px;
    cursor: pointer;
  }
  .tab.active {
    color: var(--accent);
    background: rgba(196, 163, 90, 0.14);
    font-weight: 700;
  }

  /* 阅读中隐藏底栏，把空间留给正文 */
  body.reading .tabbar { display: none; }
  body.reading .app { padding-bottom: 12px; }
  body.reading .play-bar {
    bottom: calc(8px + env(safe-area-inset-bottom, 0px));
  }

  @media (prefers-reduced-motion: reduce) {
    .view.active { animation: none; }
    .btn:hover { transform: none; }
  }
}