:root {
  --brand: #ff5a2c;
  --brand-2: #ff8a1f;
  --ink: #222;
  --muted: #7b7b86;
  --line: #ececf1;
  --soft: #fff5ef;
  --bg: #f7f7f9;
  --panel: #fff;
  --green: #21a67a;
  --shadow: 0 8px 24px rgba(27, 27, 31, .08);
}

* {
  box-sizing: border-box;
}

html {
  min-width: 320px;
  background: var(--bg);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  letter-spacing: 0;
}

body {
  margin: 0;
  padding-bottom: 68px;
  background: var(--bg);
}

a {
  color: inherit;
  text-decoration: none;
}

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

.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  height: 70px;
  background: rgba(255, 255, 255, .96);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(10px);
}

.topbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 1080px;
  height: 100%;
  margin: 0 auto;
  padding: 0 14px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 8px;
  min-width: 120px;
  font-weight: 800;
  font-size: 28px;
  color: var(--brand);
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 28px;
  height: 28px;
  border-radius: 8px;
  color: #fff;
  background: linear-gradient(135deg, var(--brand), var(--brand-2));
  font-size: 16px;
}

.top-links {
  display: none;
  align-items: center;
  gap: 20px;
}

.top-links a {
  padding: 10px 0;
  border-radius: 8px;
  color: #555761;
  font-size: 16px;
  font-weight: 600;
}

.top-links a.active,
.top-links a:hover {
  color: var(--brand);
  background: var(--soft);
}

.top-actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

.icon-link {
  display: grid;
  place-items: center;
  width: 36px;
  height: 36px;
  border-radius: 10px;
  color: #4f5159;
  background: #f4f4f7;
}

.page {
  max-width: 1080px;
  min-height: calc(100vh - 120px);
  margin: 0 auto;
  padding: 18px 12px 24px;
}

.hero {
  overflow: hidden;
  border-radius: 8px;
  background: linear-gradient(135deg, #ff5a2c 0%, #ff8a1f 54%, #ffd7a2 100%);
  color: #fff;
  box-shadow: var(--shadow);
}

.hero-content {
  display: grid;
  gap: 12px;
  padding: 28px 18px;
}

.hero h1 {
  margin: 0;
  font-size: 34px;
  line-height: 1.15;
  font-weight: 800;
}

.hero p {
  max-width: 620px;
  margin: 0;
  color: rgba(255, 255, 255, .9);
  font-size: 18px;
  line-height: 1.65;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 18px;
  border: 0;
  border-radius: 10px;
  background: #f1f1f4;
  color: #24262d;
  cursor: pointer;
  white-space: nowrap;
}

.btn.primary {
  background: var(--brand);
  color: #fff;
}

.btn.danger {
  color: #b93618;
  background: #fff0e8;
}

.hero .btn.primary {
  background: #fff;
  color: var(--brand);
}

.btn.ghost {
  color: #fff;
  background: rgba(255, 255, 255, .18);
}

.section {
  margin-top: 18px;
}

.section-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 10px;
}

.section h2 {
  margin: 0;
  font-size: 24px;
  line-height: 1.3;
}

.more-link {
  color: var(--brand);
  font-size: 14px;
}

.book-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
}

.book-card {
  display: grid;
  grid-template-columns: 86px minmax(0, 1fr);
  gap: 12px;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
}

.cover {
  display: grid;
  place-items: end start;
  width: 86px;
  height: 118px;
  padding: 8px;
  border-radius: 7px;
  color: #fff;
  font-weight: 800;
  line-height: 1.15;
  box-shadow: inset 0 -42px 42px rgba(0, 0, 0, .23);
}

.cover.small {
  width: 58px;
  height: 78px;
  font-size: 13px;
}

.book-info {
  min-width: 0;
}

.book-info h3 {
  margin: 0 0 6px;
  font-size: 20px;
}

.meta {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  color: var(--muted);
  font-size: 14px;
}

.desc {
  display: -webkit-box;
  margin: 8px 0;
  overflow: hidden;
  color: #5b5d66;
  font-size: 15px;
  line-height: 1.55;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
}

.tags,
.tabs,
.filter-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.tag,
.tab {
  display: inline-flex;
  align-items: center;
  min-height: 36px;
  padding: 0 12px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: #fff;
  color: #5b5d66;
  font-size: 15px;
}

.tag.hot,
.tab.active {
  border-color: #ffd1bd;
  color: var(--brand);
  background: var(--soft);
}

.rank-list,
.chapter-list,
.result-list {
  display: grid;
  gap: 8px;
}

.rank-item,
.chapter-item,
.user-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
}

.rank-item {
  font-size: 16px;
}

.rank-no {
  display: grid;
  place-items: center;
  flex: 0 0 26px;
  width: 26px;
  height: 26px;
  border-radius: 8px;
  color: #fff;
  background: var(--brand);
  font-weight: 800;
}

.detail-head {
  display: grid;
  grid-template-columns: 110px minmax(0, 1fr);
  gap: 14px;
  padding: 14px;
  border-radius: 8px;
  background: #fff;
  border: 1px solid var(--line);
}

.detail-head .cover {
  width: 110px;
  height: 152px;
}

.detail-head h1 {
  margin: 0 0 8px;
  font-size: 22px;
}

.detail-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 12px;
}

.panel {
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
}

.reader-shell {
  background: #fff9ef;
}

.reader {
  max-width: 760px;
  margin: 0 auto;
  padding: 18px 16px 30px;
  border-radius: 8px;
  background: #fffdf7;
  color: #33302a;
}

.reader h1 {
  margin: 0 0 8px;
  font-size: 24px;
}

.reader p {
  margin: 16px 0;
  font-size: 18px;
  line-height: 1.9;
}

.reader-nav {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  margin-top: 18px;
}


.search-box,
.login-box {
  display: grid;
  gap: 10px;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
}

.login-page {
  display: grid;
  place-items: center;
  min-height: calc(100vh - 40px);
}

.login-card {
  width: min(420px, 100%);
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #fff;
  box-shadow: var(--shadow);
}

.login-brand {
  display: inline-flex;
  margin-bottom: 18px;
  font-size: 32px;
}

.login-card h1 {
  margin: 0 0 18px;
  font-size: 28px;
}

.login-form {
  display: grid;
  gap: 14px;
}

.login-field {
  display: grid;
  align-items: stretch;
  height: auto;
  gap: 6px;
  padding: 10px 12px;
}

.login-field span {
  color: var(--muted);
  font-size: 14px;
}

.login-message {
  min-height: 22px;
  margin: 0;
  color: #b93618;
  font-size: 14px;
}

.admin-head-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: flex-end;
  gap: 10px;
}

.link-form {
  display: grid;
  gap: 10px;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
}

.hint {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.6;
}

.friend-links,
.admin-list,
.rules-grid,
.admin-summary {
  display: grid;
  gap: 10px;
}

.friend-link-row {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
}

.friend-link-row span {
  display: grid;
  gap: 4px;
  min-width: 0;
}

.friend-link-row small,
.admin-link-row small {
  color: var(--muted);
  word-break: break-all;
}

.friend-link-row time {
  flex: 0 0 auto;
  color: var(--muted);
  font-size: 12px;
}

.notice {
  display: grid;
  gap: 8px;
  padding: 14px;
  border-radius: 8px;
  border: 1px solid var(--line);
  background: #fff;
}

.notice p,
.admin-link-row p,
.rules-grid p {
  margin: 0;
  color: #5b5d66;
  line-height: 1.6;
}

.notice.success {
  border-color: rgba(33, 166, 122, .3);
  background: #f0fbf7;
}

.notice.danger {
  border-color: rgba(255, 90, 44, .25);
  background: #fff5ef;
}

.admin-summary {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.admin-summary .panel {
  display: grid;
  gap: 4px;
}

.admin-summary strong {
  font-size: 26px;
  color: var(--brand);
}

.admin-link-row {
  display: grid;
  gap: 10px;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
}

.admin-link-row a {
  display: block;
  margin: 4px 0;
  color: var(--brand);
  word-break: break-all;
}

.status-badge {
  display: inline-flex;
  align-items: center;
  min-height: 22px;
  padding: 0 8px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
}

.status-badge.approved {
  color: #087a55;
  background: #e8f8f1;
}

.status-badge.rejected {
  color: #b93618;
  background: #fff0e8;
}


.search-line,
.field {
  display: flex;
  align-items: center;
  gap: 8px;
  min-height: 44px;
  padding: 0 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #f8f8fa;
}

.search-line input,
.field input {
  width: 100%;
  border: 0;
  outline: 0;
  background: transparent;
}

.field select {
  width: 100%;
  border: 0;
  outline: 0;
  background: transparent;
}

.admin-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.admin-layout {
  display: grid;
  gap: 12px;
}

.admin-form {
  display: grid;
  gap: 10px;
}

.admin-field {
  margin-top: 8px;
}

.admin-textarea {
  display: grid;
  gap: 6px;
  margin-top: 8px;
  color: var(--muted);
  font-size: 13px;
}

.admin-textarea textarea {
  width: 100%;
  min-height: 110px;
  padding: 10px 12px;
  resize: vertical;
  border: 1px solid var(--line);
  border-radius: 8px;
  outline: 0;
  background: #f8f8fa;
  color: var(--ink);
}

.admin-import-text textarea {
  min-height: 360px;
  line-height: 1.7;
}

.admin-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: flex-start;
}

.user-card {
  padding: 16px;
  border-radius: 8px;
  color: #fff;
  background: linear-gradient(135deg, #252932, #414754);
}

.avatar {
  display: grid;
  place-items: center;
  width: 56px;
  height: 56px;
  border-radius: 18px;
  background: rgba(255, 255, 255, .18);
  font-weight: 800;
}

.bottom-nav {
  position: fixed;
  right: 0;
  bottom: 0;
  left: 0;
  z-index: 30;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  height: 60px;
  border-top: 1px solid var(--line);
  background: rgba(255, 255, 255, .97);
  backdrop-filter: blur(10px);
}

.bottom-nav a {
  display: grid;
  place-items: center;
  gap: 2px;
  padding: 6px 2px;
  color: #666872;
  font-size: 11px;
}

.bottom-nav b {
  font-size: 19px;
  line-height: 1;
}

.bottom-nav a.active {
  color: var(--brand);
}

.empty {
  padding: 24px;
  border: 1px dashed #dddde5;
  border-radius: 8px;
  color: var(--muted);
  text-align: center;
  background: #fff;
}

@media (min-width: 720px) {
  body {
    padding-bottom: 0;
  }

  .top-links {
    display: flex;
    gap: 40px;
  }

  .brand {
    font-size: 32px;
    font-weight: 800;
  }

  .top-links a {
    font-size: 18px;
    font-weight: 600;
  }

  .bottom-nav {
    display: none;
  }

  .page {
    padding: 22px 20px 42px;
  }

  .hero-content {
    min-height: 320px;
    align-content: center;
    padding: 56px 48px;
  }

  .hero h1 {
    font-size: 56px;
  }

  .hero p {
    font-size: 24px;
    line-height: 1.55;
  }

  .hero-actions {
    gap: 14px;
    margin-top: 10px;
  }

  .btn {
    min-height: 50px;
    padding: 0 22px;
    font-size: 18px;
    border-radius: 10px;
  }

  .section {
    margin-top: 26px;
  }

  .section h2 {
    font-size: 28px;
  }

  .book-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .book-card {
    grid-template-columns: 96px minmax(0, 1fr);
    gap: 16px;
    padding: 16px;
  }

  .cover {
    width: 96px;
    height: 132px;
  }

  .book-info h3 {
    font-size: 24px;
  }

  .meta {
    font-size: 16px;
  }

  .desc {
    font-size: 16px;
  }

  .tag,
  .tab {
    min-height: 40px;
    padding: 0 16px;
    font-size: 16px;
  }

  .rank-item {
    font-size: 18px;
  }

  .two-col {
    display: grid;
    grid-template-columns: minmax(0, 2fr) minmax(280px, 1fr);
    gap: 14px;
    align-items: start;
  }

  .detail-head {
    grid-template-columns: 138px minmax(0, 1fr);
    padding: 18px;
  }

  .detail-head .cover {
    width: 138px;
    height: 190px;
  }

  .detail-head h1 {
    font-size: 28px;
  }

  .rules-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .admin-link-row {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
  }

  .admin-layout {
    grid-template-columns: minmax(280px, .75fr) minmax(0, 1.25fr);
    align-items: start;
  }
}