:root {
  --nv-primary: #6559ff;
  --nv-dark: #2a2a35;
  --nv-gray: #6c6f7f;
  --nv-light: #f5f6fa;
  --nv-border: #e5e8f0;
}

body.novel-app {
  font-family: "PingFang SC", "Microsoft YaHei", sans-serif;
  background: #ffffff;
  color: var(--nv-dark);
  margin: 0;
}

* {
  box-sizing: border-box;
}

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

a:hover {
  color: var(--nv-primary);
}

.nv-container {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 24px;
}

.nv-header {
  background: #fff;
  border-bottom: 1px solid var(--nv-border);
}

.nv-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 20px 0;
}

.nv-logo a {
  font-size: 24px;
  font-weight: 700;
  color: var(--nv-primary);
}

.nv-nav {
  display: flex;
  gap: 18px;
  flex: 1;
}

.nv-nav__item {
  color: var(--nv-dark);
  font-size: 15px;
  font-weight: 500;
}

.nv-search {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--nv-light);
  border-radius: 999px;
  padding: 4px 12px;
}

.nv-search input {
  border: none;
  background: transparent;
  outline: none;
  width: 180px;
}

.nv-search button {
  border: none;
  background: var(--nv-primary);
  color: #fff;
  border-radius: 999px;
  padding: 6px 16px;
  cursor: pointer;
}

.nv-hero {
  background: linear-gradient(120deg, #f5f7ff, #fff);
  padding: 48px 0 40px;
}

.nv-hero__intro h2 {
  font-size: 28px;
  margin-bottom: 12px;
}

.nv-hero__intro p {
  color: var(--nv-gray);
  margin: 0 0 24px;
}

.nv-hero__list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 20px;
}

.nv-card {
  background: #fff;
  border-radius: 16px;
  padding: 20px;
  box-shadow: 0 12px 28px -12px rgba(83, 90, 160, 0.2);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.nv-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 16px 36px -14px rgba(83, 90, 160, 0.28);
}

.nv-card h3 {
  margin: 0 0 12px;
  font-size: 18px;
  line-height: 1.4;
}

.nv-card__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 12px;
  color: var(--nv-gray);
  font-size: 13px;
}

.nv-card__desc {
  color: var(--nv-dark);
  line-height: 1.6;
  margin: 0 0 14px;
}

.nv-card__footer {
  display: flex;
  justify-content: space-between;
  color: var(--nv-gray);
  font-size: 12px;
}

.nv-section {
  padding: 48px 0;
}

.nv-section--light {
  background: var(--nv-light);
}

.nv-section__header {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 28px;
}

.nv-section__header--between {
  flex-direction: row;
  align-items: flex-end;
  justify-content: space-between;
}

.nv-section__header h2 {
  margin: 0;
  font-size: 24px;
}

.nv-section__intro {
  margin: 0;
  color: var(--nv-gray);
}

.nv-grid {
  display: grid;
  gap: 20px;
}

.nv-grid--3 {
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
}

.nv-grid--2 {
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
}

.nv-category-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 32px;
}

.nv-pill {
  padding: 6px 16px;
  border-radius: 999px;
  background: #fff;
  border: 1px solid var(--nv-border);
  color: var(--nv-gray);
  font-size: 13px;
}

.nv-category-block {
  background: #fff;
  border-radius: 16px;
  padding: 20px;
  box-shadow: 0 12px 28px -16px rgba(83, 90, 160, 0.2);
}

.nv-category-block__header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
}

.nv-category-block__header h3 {
  margin: 0;
  font-size: 18px;
}

.nv-category-block__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.nv-category-block__list li {
  padding: 10px 12px;
  border-radius: 10px;
  background: var(--nv-light);
  transition: background 0.2s ease;
}

.nv-category-block__list li:hover {
  background: rgba(101, 89, 255, 0.08);
}

.nv-category-block__list .title {
  font-weight: 600;
  margin-right: 12px;
}

.nv-category-block__list .meta {
  color: var(--nv-gray);
  font-size: 12px;
}

.nv-breadcrumb {
  background: var(--nv-light);
  padding: 14px 0;
}

.nv-breadcrumb a {
  color: var(--nv-primary);
}

.nv-breadcrumb span {
  color: var(--nv-gray);
  margin: 0 6px;
}

.nv-detail {
  padding: 48px 0 32px;
  background: linear-gradient(140deg, #f8f9ff, #fff);
}

.nv-detail__info {
  background: #fff;
  border-radius: 20px;
  padding: 32px;
  box-shadow: 0 16px 40px -20px rgba(93, 97, 173, 0.35);
}

.nv-detail__title {
  font-size: 32px;
  margin: 0 0 18px;
}

.nv-detail__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  color: var(--nv-gray);
  margin: 0 0 18px;
}

.nv-detail__desc {
  line-height: 1.8;
  color: var(--nv-dark);
  margin-bottom: 22px;
}

.nv-detail__actions {
  display: flex;
  gap: 12px;
}

.nv-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 22px;
  border-radius: 999px;
  border: none;
  background: var(--nv-primary);
  color: #fff;
  font-weight: 600;
  cursor: pointer;
}

.nv-btn--ghost {
  background: #fff;
  color: var(--nv-primary);
  border: 1px solid rgba(101, 89, 255, 0.4);
}

.nv-chapter-list {
  background: #fff;
  border-radius: 16px;
  padding: 24px;
  box-shadow: 0 10px 24px -18px rgba(83, 90, 160, 0.35);
}

.nv-chapter-list ul {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 12px;
  list-style: none;
  padding: 0;
  margin: 0;
}

.nv-chapter-list li {
  padding: 12px 16px;
  border: 1px solid var(--nv-border);
  border-radius: 12px;
  transition: border 0.2s ease, background 0.2s ease;
}

.nv-chapter-list li:hover {
  border-color: rgba(101, 89, 255, 0.6);
  background: rgba(101, 89, 255, 0.05);
}

.nv-chapter-list .meta {
  display: block;
  margin-top: 6px;
  color: var(--nv-gray);
  font-size: 12px;
}

.nv-reader {
  background: #fff;
  padding: 36px 0 60px;
}

.nv-reader__header h1 {
  font-size: 28px;
  margin: 0 0 12px;
}

.nv-reader__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  color: var(--nv-gray);
  margin-bottom: 24px;
}

.nv-reader__body {
  background: var(--nv-light);
  border-radius: 18px;
  padding: 32px;
  line-height: 2;
  color: var(--nv-dark);
}

.nv-reader__body p {
  margin: 0 0 18px;
}

.nv-reader__actions {
  margin-top: 24px;
}

.nv-pagination {
  display: flex;
  justify-content: center;
  padding-top: 28px;
}

.nv-pagination .paging {
  display: inline-flex;
  gap: 6px;
}

.nv-pagination .paging a,
.nv-pagination .paging span {
  padding: 8px 14px;
  border-radius: 999px;
  border: 1px solid var(--nv-border);
  color: var(--nv-gray);
  font-size: 13px;
}

.nv-pagination .paging span {
  background: var(--nv-primary);
  border-color: var(--nv-primary);
  color: #fff;
}

.nv-empty {
  text-align: center;
  color: var(--nv-gray);
  padding: 24px 0;
}

.nv-footer {
  background: var(--nv-dark);
  color: #a8acc6;
  padding: 24px 0;
  margin-top: 40px;
}

.nv-footer__inner {
  display: flex;
  justify-content: center;
  font-size: 13px;
}

@media (max-width: 768px) {
  .nv-header__inner {
    flex-direction: column;
    align-items: flex-start;
  }

  .nv-nav {
    flex-wrap: wrap;
  }

  .nv-search input {
    width: 140px;
  }

  .nv-grid--3 {
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  }

  .nv-detail__title {
    font-size: 26px;
  }

  .nv-detail__info {
    padding: 24px;
  }

  .nv-reader__body {
    padding: 22px;
  }
}

.nv-backtop {
  position: fixed;
  bottom: 30px;
  right: 24px;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: none;
  background: var(--nv-primary);
  color: #fff;
  font-size: 18px;
  opacity: 0;
  visibility: hidden;
  transition: all 0.25s ease;
  box-shadow: 0 8px 16px -12px rgba(93, 97, 173, 0.5);
  cursor: pointer;
  z-index: 999;
}

.nv-backtop.show {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}