* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
a {
    color: #4d5259;
}
a:hover {
    color: #8bb382;
}
body {
    background: #f4f9f4;
    font-family: 'Microsoft JhengHei', '微软雅黑', 'Segoe UI', Roboto, 'Noto Sans', system-ui, sans-serif;
    padding: 2rem 1.5rem;
    color: #212529;
}
.container {
    max-width: 1000px;
    margin: 0 auto;
}
.book-card {
    background: #ffffff;
    border-radius: 10px;
    padding: 1.8rem;
    margin-bottom: 2rem;
    box-shadow: 0 8px 20px rgba(0,0,0,0.04);
    border: 1px solid #e0ecdb;
    display: flex;
    flex-wrap: wrap;
    gap: 2rem;
    align-items: flex-start;
}
.book-cover {
    width: 180px;
    background: #cbe2c4;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #5b7c4e;
    font-weight: 500;
    box-shadow: 0 4px 10px rgba(0,0,0,0.05);
}
.book-cover img {
    aspect-ratio: 3 / 4;
    border-radius: 10px;
}
.book-info {
    flex: 1;
}
.book-title {
    font-size: 2rem;
    font-weight: 600;
    color: #212529;
    margin-bottom: 1rem;
}
.book-meta {
    color: #6c757d;
    margin-bottom: 1rem;
}
.book-desc {
    color: #4d5259;
    line-height: 2;
    text-align: left;
}
.book-guide {
    line-height: 2;
    padding: 15px;
    border-radius: 5px;
    background-color: rgba(0, 0, 0, .035);
    color: #4d5259;
    text-align: left;
}
.chapter-section {
    background: white;
    border-radius: 10px;
    padding: 1.8rem;
    border: 1px solid #e2efdf;
}
.section-title {
    font-size: 1.3rem;
    font-weight: 500;
    color: #4d5259;
    border-bottom: 2px solid #ececec;
    padding-bottom: 0.5rem;
    margin-bottom: 1.2rem;
}
.chapter-list {
    display: flex;
    flex-direction: column;
    gap: 0.6rem;
}
.chapter-item {
    display: flex;
    align-items: center;
    padding: 0.6rem 1rem;
    background: #F8F9FA;
    border-radius: 60px;
    border: 1px solid #e0ecdb;
    text-decoration: none;
    color: #4d5259;
    transition: all 0.2s;
}
.chapter-item:hover {
    background: #e6f2e2;
    border-color: #bfdaaf;
    transform: translateX(4px);
}
.chapter-num {
    background: #dbe9d4;
    border-radius: 40px;
    padding: 0.2rem 0.8rem;
    font-size: 0.75rem;
    margin-right: 1rem;
    font-weight: 500;
}
.chapter-name {
    flex: 1;
}
/*详细页面*/
.reader-container {
    max-width: 1000px;
    margin: 0 auto;
    background: #fcfcfc;
    border-radius: 10px;
    padding: 2rem 1.8rem;
    box-shadow: 0 10px 28px rgba(0, 0, 0, 0.03);
    border: 1px solid rgba(0, 0, 0, 0.125);
    transition: background-color 0.2s;
}
/* 工具栏置顶 */
.toolbar {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 1.2rem;
    margin-bottom: 2rem;
    align-items: center;
    border-radius: 35px;
    background-color: rgba(0,0,0,0.75);
}
.tool-group {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: #fff;
    padding: 0.3rem 1rem;
}
.tool-group label {
    font-size: 0.85rem;
    color: #fff;
    font-weight: 500;
}
select, .font-value {
    background: rgba(248, 249, 250, .9);
    border-radius: 30px;
    padding: 0.31rem 0.6rem;
    font-size: 0.85rem;
    border: none;
    color: #212529;
    outline: none;
    cursor: pointer;
}
.font-control {
    display: flex;
    align-items: center;
    gap: 8px;
}
.font-btn {
    background: rgba(248, 249, 250, .9);
    border: none;
    width: 28px;
    height: 28px;
    border-radius: 30px;
    font-weight: 300;
    line-height: 28px;
    cursor: pointer;
    color: #212529;
    font-size: 1.1rem;
    transition: 0.1s;
}
.font-btn:hover {
    background: #ddebd5;
}
.theme-btn {
    position: relative;
    display: inline-block;
    font-weight: 400;
    color: #212529;
    text-align: center;
    vertical-align: middle;
    cursor: pointer;
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;
    background-color: transparent;
    border: none;
    padding: .375rem .75rem;
    font-size: 1rem;
    line-height: 1.5;
    transition: color .15s ease-in-out, background-color .15s ease-in-out, border-color .15s ease-in-out, box-shadow .15s ease-in-out;
}
.theme-btn.active:after {
    position: absolute;
    left: 8px;
    top: 0px;
    font-size: 11px;
    color: rgba(163,163,163,.75);
    font-family: "emoji";
    content: '√'
}
.color-picker {
    width: 32px;
    height: 32px;
    border: none;
    background: transparent;
    cursor: pointer;
    vertical-align: middle;
    border-radius: 50%;
    border: 1px solid #cde0c5;
}
.book-header {
    border-bottom: 2px solid rgba(236, 236, 236, .375);
    padding-bottom: 1rem;
    margin-bottom: 1.5rem;
}
.book-name {
    font-size: 1.2rem;
    font-weight: 500;
    color: #4d5259;
}
.detail-chapter-name {
    font-size: 1.8rem;
    font-weight: 500;
    margin-top: 0.3rem;
}
.content-body {
    font-size: 16px;
    margin: 2rem 0;
    text-align: justify;
    transition: font-family 0.1s, font-size 0.1s;
    line-height: 2;
}
.content-body p {
    margin-bottom: 1.2rem;
    text-indent: 2rem;
}
blockquote {
    background: rgba(163, 163, 163, 0.075);
    border-radius: .25rem;
    padding: 0.5rem;
    padding-left: 2rem;
    padding-right: 2rem;
    position: relative;
    margin-bottom: 1.2rem;
}
blockquote:after {
    content: "”";
    position: absolute;
    overflow: hidden;
    right: -15px;
    width: 30px;
    top: -38px;
    font-size: 80px;
    color: rgba(0, 0, 0, .35);
}
blockquote p {
    text-indent: 0px!important;
}
blockquote p:last-child {
    margin-bottom: 0px;
}
.nav-buttons {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    border-top: 2px solid rgba(236, 236, 236, .375);
    padding-top: 2rem;
    margin: 2rem 0 1.5rem;
}
.nav-btn {
    background: rgba(248, 249, 250, .75);
    border: 1px solid rgba(236, 236, 236, .75);
    padding: 0.6rem 1.5rem;
    border-radius: 60px;
    font-size: 0.9rem;
    cursor: pointer;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    transition: 0.2s;
}
.nav-btn:hover {
    background: #ddebd5;
    border-color: #b2cf9f;
}
footer {
    text-align: center;
    margin-top: 2rem;
    font-size: 0.8rem;
    color: #8bb382;
}
footer a {
    color: #8bb382;
}
ruby rt {
    font-size: 1rem;
	color: #f96868;
}
@media (max-width: 640px) {
    .reader-container { padding: 1rem; }
    .detail-chapter-name { font-size: 1.4rem; }
    .toolbar { gap: 0.8rem; padding: .5rem 0px; border-radius: 10px; }
}
@media (max-width: 600px) {
    .book-card { flex-direction: column; align-items: center; text-align: center; }
    .book-meta { border-left: none; }
    body { padding: 0.5rem; }
    .chapter-section { padding: 1rem; }
    .chapter-item { background-color: transparent; border-color: transparent; }
    .chapter-item span:last-child { display: none; }
}
@media (max-width: 400px) {
    .nav-btn {
        padding: 0.6rem 1rem;
    }
    .tool-group label {
        display: none;
    }
}
.text-red {
    color: #f44236;
}
.text-right {
    text-align: right;
}
/*tooltip*/
span[data-bs-toggle="tooltip"] {
    padding-block-end: 1px;
    border-block-end: 1px dotted;
    text-decoration: none;
    cursor: help;
}
.tooltip {
  position: absolute;
  z-index: 1070; /* Bootstrap z-index */
  display: block;
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol";
  font-style: normal;
  font-weight: 400;
  line-height: 1.5;
  text-align: left;
  text-align: start;
  text-decoration: none;
  text-shadow: none;
  text-transform: none;
  letter-spacing: normal;
  word-break: normal;
  word-spacing: normal;
  white-space: normal;
  line-break: auto;
  font-size: 0.875rem;
  word-wrap: break-word;
  opacity: 0;
}
.tooltip.show {
  opacity: 0.9;
}

.bs-tooltip-top, .bs-tooltip-auto[data-popper-placement^="top"] {
  padding: 0.4rem 0;
}
.bs-tooltip-top .tooltip-arrow, .bs-tooltip-auto[data-popper-placement^="top"] .tooltip-arrow {
  bottom: 0;
}
.bs-tooltip-top .tooltip-arrow::before, .bs-tooltip-auto[data-popper-placement^="top"] .tooltip-arrow::before {
  top: -1px;
  border-width: 0.4rem 0.4rem 0;
  border-top-color: #000;
}

.bs-tooltip-end, .bs-tooltip-auto[data-popper-placement^="right"] {
  padding: 0 0.4rem;
}
.bs-tooltip-end .tooltip-arrow, .bs-tooltip-auto[data-popper-placement^="right"] .tooltip-arrow {
  left: 0;
  width: 0.4rem;
  height: 0.8rem;
}
.bs-tooltip-end .tooltip-arrow::before, .bs-tooltip-auto[data-popper-placement^="right"] .tooltip-arrow::before {
  right: -1px;
  border-width: 0.4rem 0.4rem 0.4rem 0;
  border-right-color: #000;
}

.bs-tooltip-bottom, .bs-tooltip-auto[data-popper-placement^="bottom"] {
  padding: 0.4rem 0;
}
.bs-tooltip-bottom .tooltip-arrow, .bs-tooltip-auto[data-popper-placement^="bottom"] .tooltip-arrow {
  top: 0;
}
.bs-tooltip-bottom .tooltip-arrow::before, .bs-tooltip-auto[data-popper-placement^="bottom"] .tooltip-arrow::before {
  bottom: -1px;
  border-width: 0 0.4rem 0.4rem;
  border-bottom-color: #000;
}

.bs-tooltip-start, .bs-tooltip-auto[data-popper-placement^="left"] {
  padding: 0 0.4rem;
}
.bs-tooltip-start .tooltip-arrow, .bs-tooltip-auto[data-popper-placement^="left"] .tooltip-arrow {
  right: 0;
  width: 0.4rem;
  height: 0.8rem;
}
.bs-tooltip-start .tooltip-arrow::before, .bs-tooltip-auto[data-popper-placement^="left"] .tooltip-arrow::before {
  left: -1px;
  border-width: 0.4rem 0 0.4rem 0.4rem;
  border-left-color: #000;
}

.tooltip-inner {
  max-width: 300px;
  padding: 0.25rem 0.5rem;
  color: #fff;
  text-align: center;
  background-color: #000;
  border-radius: 0.25rem;
}

.tooltip-arrow {
  position: absolute;
  display: block;
  left: calc(50% - 0.4rem);
  width: 0.8rem;
  height: 0.4rem;
}
.tooltip-arrow::before {
  position: absolute;
  content: "";
  border-color: transparent;
  border-style: solid;
}