html {
     font-size: calc(100vw / 3.75);
 }

 @media (min-width: 540px) {
     html {
         font-size: 144px;
     }
 }

 @media (max-width: 320px) {
     html {
         font-size: 85.333333px;
     }
 }

 body {
     margin: 0;
     color: #1f2329;
     -webkit-font-smoothing: antialiased;
     font-family: -apple-system, BlinkMacSystemFont, "Helvetica Neue", Helvetica, Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
     background: #f5f6f8;
 }

 :root {
     --bg: #f5f6f8;
     --card: #ffffff;
     --text: #1f2329;
     --muted: rgba(31, 35, 41, 0.62);
     --line: rgba(31, 35, 41, 0.10);
     --brand: #2b6cff;
     --radius: 0.18rem;
     --shadow: 0 0.12rem 0.36rem rgba(31, 35, 41, 0.10);
 }

 * {
     box-sizing: border-box;
 }

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


 img {
     display: block;
     max-width: 100%;
 }

 .page {
     min-height: 100vh;
 }



 .icon {
     width: 0.18rem;
     height: 0.18rem;
     display: inline-block;
     background-size: 100% 100%;
     background-repeat: no-repeat;
     background-position: center;
 }

 .icon-back {
     background-image: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="18" height="18" viewBox="0 0 24 24" fill="none" stroke="%231f2329" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="M15 18l-6-6 6-6"/></svg>');
 }

 .icon-share {
     background-image: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="18" height="18" viewBox="0 0 24 24" fill="none" stroke="%231f2329" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="M4 12v7a1 1 0 0 0 1 1h14a1 1 0 0 0 1-1v-7"/><path d="M12 3v13"/><path d="M7 8l5-5 5 5"/></svg>');
 }

 .icon-bookmark {
     background-image: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="18" height="18" viewBox="0 0 24 24" fill="none" stroke="%231f2329" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="M19 21l-7-5-7 5V5a2 2 0 0 1 2-2h10a2 2 0 0 1 2 2z"/></svg>');
 }

 .titlebar {
     flex: 1;
     padding: 0 0.08rem;
     text-align: center;
     font-size: 0.16rem;
     font-weight: 600;
     letter-spacing: 0.01rem;
     color: rgba(31, 35, 41, 0.90);
     overflow: hidden;
     white-space: nowrap;
     text-overflow: ellipsis;
 }

 .wrap {
     padding: 0 0 0.12rem;
 }

 /* 面包屑导航 */
 .breadcrumb {
     display: flex;
     align-items: center;
     padding: 0.12rem 0.18rem;
     background: #ffffff;
     overflow-x: auto;
     -webkit-overflow-scrolling: touch;
 }

 .breadcrumb::-webkit-scrollbar {
     display: none;
 }

 .breadcrumb-item {
     font-size: 0.14rem;
     line-height: 0.20rem;
     color: rgba(31, 35, 41, 0.62);
     white-space: nowrap;
     transition: color 0.2s ease;
 }

 .breadcrumb-item:hover {
     color: rgba(31, 35, 41, 0.85);
 }

 .breadcrumb-item.active {
     color: rgba(31, 35, 41, 0.92);
     font-weight: 600;
 }

 .breadcrumb-separator {
     display: inline-block;
     width: 0.20rem;
     height: 0.20rem;
     margin: 0 0.04rem;
     position: relative;
     flex-shrink: 0;
 }

 .breadcrumb-separator::before {
     content: '';
     position: absolute;
     top: 50%;
     left: 50%;
     transform: translate(-50%, -50%) rotate(-45deg);
     width: 0.08rem;
     height: 0.08rem;
     border-bottom: 2px solid rgba(31, 35, 41, 0.35);
     border-right: 2px solid rgba(31, 35, 41, 0.35);
 }

 .card {
     background: var(--card);
     /* border-radius: var(--radius); */
     /* box-shadow: var(--shadow); */
     overflow: hidden;
 }

 .header {
     padding: 0.18rem 0.18rem 0.12rem;
 }

 .headline {
     margin: 0;
     font-size: 0.22rem;
     line-height: 0.32rem;
     font-weight: 800;
     color: var(--text);
     letter-spacing: 0.002rem;
 }

 .meta {
     margin-top: 0.10rem;
     display: flex;
     align-items: center;
     justify-content: space-between;
     gap: 0.12rem;
     color: var(--muted);
     font-size: 0.12rem;
     line-height: 0.18rem;
 }

 .meta-left {
     display: flex;
     flex-wrap: wrap;
     gap: 0.08rem;
     align-items: center;
 }

 .badge {
     display: inline-flex;
     align-items: center;
     padding: 0 0.08rem;
     height: 0.22rem;
     border-radius: 999px;
     background: rgba(43, 108, 255, 0.10);
     color: rgba(43, 108, 255, 0.96);
     border: 1px solid rgba(43, 108, 255, 0.18);
     font-weight: 600;
 }

 .cover {
     position: relative;
     width: 100%;
     height: 1.85rem;
     background: linear-gradient(135deg, rgba(43, 108, 255, 0.18), rgba(127, 86, 217, 0.16));
 }

 .cover img {
     width: 100%;
     height: 100%;
     object-fit: cover;
 }

 .content {
     padding: 0.16rem 0.18rem 0.18rem;
 }

 .content p {
     margin: 0.12rem 0;
     font-size: 0.16rem;
     line-height: 0.28rem;
     color: rgba(31, 35, 41, 0.92);
     letter-spacing: 0.002rem;
     text-align: justify;
     word-break: break-word;
 }

 .content h2 {
     margin: 0.20rem 0 0.08rem;
     font-size: 0.18rem;
     line-height: 0.28rem;
     font-weight: 800;
     color: var(--text);
 }

 .content h3 {
     margin: 0.18rem 0 0.08rem;
     font-size: 0.16rem;
     line-height: 0.24rem;
     font-weight: 700;
     color: rgba(31, 35, 41, 0.92);
 }

 .content ul {
     margin: 0.10rem 0 0.16rem;
     padding-left: 0.18rem;
 }

 .content li {
     font-size: 0.15rem;
     line-height: 0.26rem;
     color: rgba(31, 35, 41, 0.90);
     margin: 0.06rem 0;
 }

 .quote {
     margin: 0.16rem 0;
     padding: 0.12rem 0.12rem 0.12rem 0.14rem;
     border-left: 0.04rem solid rgba(43, 108, 255, 0.70);
     background: rgba(43, 108, 255, 0.06);
     border-radius: 0.12rem;
     color: rgba(31, 35, 41, 0.86);
     font-size: 0.15rem;
     line-height: 0.26rem;
 }

 .figure {
     margin: 0.14rem 0;
     border-radius: 0.12rem;
     overflow: hidden;
     border: 1px solid var(--line);
     background: #fff;
 }

 .figure img {
     width: 100%;
     height: auto;
 }

 .caption {
     padding: 0.10rem 0.12rem;
     font-size: 0.12rem;
     line-height: 0.18rem;
     color: var(--muted);
 }

 .divider {
     height: 1px;
     background: var(--line);
     margin: 0.18rem 0;
 }

 .nav {
     padding: 0.14rem 0.18rem 0.18rem;
 }

 .nav-title {
     font-size: 0.12rem;
     line-height: 0.18rem;
     color: var(--muted);
     margin: 0 0 0.10rem;
 }

 .nav-item {
     display: flex;
     align-items: center;
     justify-content: space-between;
     gap: 0.12rem;
     padding: 0.12rem 0.12rem;
     border: 1px solid var(--line);
     border-radius: 0.14rem;
     background: #fff;
     margin-top: 0.10rem;
 }

 .nav-text {
     flex: 1;
     min-width: 0;
 }

 .nav-text .label {
     display: block;
     font-size: 0.12rem;
     line-height: 0.18rem;
     color: var(--muted);
     margin-bottom: 0.04rem;
 }

 .nav-text .title {
     display: -webkit-box;
     -webkit-line-clamp: 2;
     -webkit-box-orient: vertical;
     overflow: hidden;
     font-size: 0.14rem;
     line-height: 0.20rem;
     font-weight: 650;
     color: rgba(31, 35, 41, 0.92);
 }

 .nav-arrow {
     width: 0.22rem;
     height: 0.22rem;
     border-radius: 999px;
     display: inline-flex;
     align-items: center;
     justify-content: center;
     color: rgba(31, 35, 41, 0.76);
     border: 1px solid var(--line);
     background: rgba(245, 246, 248, 0.90);
 }

 .nav-arrow::before {
     content: '›';
     font-size: 0.18rem;
     line-height: 1;
     transform: translateX(0.01rem);
 }

 .qrcode {
     padding: 0.16rem 0.18rem 0.20rem;
     border-top: 1px solid var(--line);
     background: #fff;
 }

 .qrcode-grid {
     display: grid;
     grid-template-columns: repeat(2, minmax(0, 1fr));
     gap: 0.14rem;
 }

 .qrcode-item {
     border: 1px solid var(--line);
     border-radius: 0.14rem;
     padding: 0.14rem 0.12rem;
     background: #fff;
 }

 .qrcode-title {
     margin: 0 0 0.12rem;
     text-align: center;
     font-size: 0.16rem;
     line-height: 0.22rem;
     font-weight: 800;
     color: rgba(31, 35, 41, 0.92);
     letter-spacing: 0.002rem;
 }

 .qrcode-img {
     width: 100%;
     aspect-ratio: 1 / 1;
     object-fit: contain;
     border-radius: 0.10rem;
     background: #fff;
 }

 @media (max-width: 340px) {
     .qrcode-grid {
         grid-template-columns: 1fr;
     }
 }

 .tip {
     padding: 0.12rem 0.18rem 0.18rem;
     color: var(--muted);
     font-size: 0.12rem;
     line-height: 0.18rem;
 }

 .float-actions {
     position: fixed;
     right: 0.12rem;
     bottom: calc(0.56rem + env(safe-area-inset-bottom) + 0.16rem);
     display: flex;
     flex-direction: column;
     gap: 0.10rem;
     z-index: 10;
 }

 /* 为页面添加底部内边距，避免被底部导航遮挡 */
 body {
     padding-bottom: calc(60px + env(safe-area-inset-bottom));
 }

 .fab {
     width: 0.44rem;
     height: 0.44rem;
     border-radius: 999px;
     border: 1px solid var(--line);
     background: rgba(255, 255, 255, 0.92);
     box-shadow: 0 0.12rem 0.32rem rgba(31, 35, 41, 0.18);
     display: flex;
     align-items: center;
     justify-content: center;
     color: rgba(31, 35, 41, 0.80);
 }

 .fab-top::before {
     content: '↑';
     font-size: 0.18rem;
     line-height: 1;
 }

 .fab-share .icon {
     width: 0.20rem;
     height: 0.20rem;
 }