:root {
    --bg-color: #f7faf8;
    --text-color: #333;
    --text-muted: #888;
    --text-light: #999;
    --text-extra: #aaa;
    --primary: #28a745;
    --primary-light: #34c759;
    --primary-bg: #eef7f1;
    --primary-border: #dcf3e2;
    --warn-color: #ffab00;
    --danger-color: #ff4d4f;
    --orange-color: #faad14;
    --link-color: #007bff;

    --card-bg: #ffffff;
    --card-bg-2: #f7faf8;
    --card-border: #f0f4f1;
    --border-normal: #eee;
    --border-light: #f5f5f5;

    --tag-hot-bg: #fff1f0;
    --tag-fast-bg: #eef7f1;
    --tag-new-bg: #fef7e8;
    --tag-normal-bg: #f5f7fa;

    --header-bg: #ffffff;
    --menu-bg: #ffffff;
    --menu-hover: #f8f9fa;
}

/* 深色模式变量 */
html.dark {
    --bg-color: #121212;
    --text-color: #e5e5e5;
    --text-muted: #b0b0b0;
    --text-light: #999;
    --text-extra: #888;
    --primary: #40c962;
    --primary-light: #4cd070;
    --primary-bg: #1f3327;
    --primary-border: #2a4634;
    --warn-color: #ffc857;
    --danger-color: #ff6b6b;
    --orange-color: #ffc153;
    --link-color: #4299ff;

    --card-bg: #1e1e1e;
    --card-bg-2: #252525;
    --card-border: #333;
    --border-normal: #333;
    --border-light: #2d2d2d;

    --tag-hot-bg: #3a2424;
    --tag-fast-bg: #1f3327;
    --tag-new-bg: #3b3222;
    --tag-normal-bg: #2d2d2d;

    --header-bg: #1a1a1a;
    --menu-bg: #1e1e1e;
    --menu-hover: #2d2d2d;
}

*{margin:0;padding:0;box-sizing:border-box;-webkit-tap-highlight-color:transparent;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto}
body{
    background: var(--bg-color);
    color: var(--text-color);
    font-size:14px;
    line-height:1.6;
    padding-bottom: 90px;
    transition: background 0.3s ease, color 0.3s ease;
}

/*顶部头部*/
.top-head{
    background: var(--header-bg);
    padding:20px 16px;
    text-align:center;
    border-bottom:1px solid var(--card-border);
}
.top-head h1{
    font-size:16px;
    color: var(--primary);
    font-weight:600;
    margin-bottom:6px
}
.top-head p{
    font-size:12px;
    color: var(--text-muted);
}

/*导航栏*/
.tab-nav{
    display:flex;
    background: var(--card-bg);
    margin:12px 16px;
    border-radius:12px;
    overflow:hidden;
    box-shadow:0 2px 10px rgba(40,167,69,0.06)
}
.tab-item{
    flex:1;
    text-align:center;
    padding:12px 0;
    font-size:14px;
    color: var(--text-light);
    position:relative
}
.tab-item.active{
    color: var(--primary);
    font-weight:500
}
.tab-item.active::after{
    content:'';
    position:absolute;
    bottom:0;
    left:50%;
    transform:translateX(-50%);
    width:24px;
    height:3px;
    background: var(--primary);
    border-radius:3px
}

/*内容容器*/
.container{padding:0 16px}
.tip-box{
    background: var(--primary-bg);
    border:1px solid var(--primary-border);
    border-radius:12px;
    padding:12px 14px;
    margin:10px 0;
    font-size:13px;
    color: var(--primary);
}
.section-h2{
    background: var(--primary-bg);
    border:1px solid var(--primary-border);
    border-radius:12px;
    padding:12px 14px;
    margin:10px 0;
    font-size:14px;
    color: var(--primary);
}

/*卡片全新样式*/
.app-card{
    background: var(--card-bg);
    border-radius:16px;
    padding:14px;
    margin-bottom:12px;
    box-shadow:0 3px 12px rgba(0,0,0,0.04);
    display:flex;
    align-items:center;
    gap:12px;
    position:relative
}
.new-badge{
    position:absolute;
    top:12px;
    right:12px;
    background: var(--danger-color);
    color: var(--card-bg);
    font-size:10px;
    padding:2px 8px;
    border-radius:10px
}

.app-logo{
    width:52px;
    height:52px;
    border-radius:14px;
    overflow:hidden;
    background: var(--primary-bg)
}
.app-logo img{width:100%;height:100%;object-fit:cover}

.app-info{flex:1}
.app-name{
    font-size:15px;
    font-weight:600;
    margin-bottom:4px;
    color: var(--text-color);
}
.app-score{
    color: var(--warn-color);
    font-size:12px
}

/*标签美化*/
.tag-list{display:flex;flex-wrap:wrap;gap:5px;margin:6px 0}
.app-tag{font-size:10px;padding:2px 7px;border-radius:8px}
.tag-hot{
    background: var(--tag-hot-bg);
    color: var(--danger-color);
}
.tag-fast{
    background: var(--tag-fast-bg);
    color: var(--primary);
}
.tag-new{
    background: var(--tag-new-bg);
    color: var(--orange-color);
}
.tag-normal{
    background: var(--tag-normal-bg);
    color: var(--text-light);
}

.app-desc{
    font-size:11px;
    color: var(--text-light);
    margin-top:4px
}
.app-desc {
  display: -webkit-box;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 2;
  overflow: hidden;
  text-overflow: ellipsis;
  width: 100%;
  word-break: break-all;
}

/*下载按钮*/
.down-btn{
    background:linear-gradient(90deg, var(--primary-light), var(--primary));
    color: var(--card-bg);
    border:none;
    border-radius:10px;
    padding:9px 18px;
    font-size:13px;
    font-weight:500
}

/*统计模块*/
.count-box{
    background: var(--card-bg);
    border-radius:16px;
    padding:16px;
    margin:10px 0;
    display:flex;
    justify-content:space-around;
    text-align:center
}
.count-item .num{
    font-size:18px;
    font-weight:600;
    color: var(--primary)
}
.count-item .txt{
    font-size:11px;
    color: var(--text-light)
}

/*滚动公告*/
.notice-box{
    background: var(--card-bg);
    border-radius:12px;
    height:42px;
    overflow:hidden;
    margin:10px 0;
    display:flex;
    align-items:center;
    font-size: 12px;
    padding:0 12px
}
.notice-title{
    color: var(--primary);
    margin-right:10px;
    font-size:14px
}

/*页面切换*/
.page-box{display:none}
.page-box.active{display:block}

/*底部 修复遮挡：固定定位+深色适配 */
.footer{
    position:fixed;
    bottom:0;
    left:0;
    right:0;
    background: var(--header-bg);
    padding:10px;
    text-align:center;
    font-size:11px;
    color: var(--text-extra);
    border-top:1px solid var(--border-normal);
    z-index: 997;
}

/*问卷模块美化*/
.question-card{
    background: var(--card-bg);
    border-radius:16px;
    padding:16px;
    margin:10px 0
}
.question-title{
    font-size:15px;
    font-weight:600;
    margin-bottom:10px;
    color: var(--primary)
}
.ques-item{
    background: var(--card-bg-2);
    border-radius:10px;
    padding:12px;
    margin-bottom:8px;
    border:1px solid var(--card-border)
}
.ques-item.active{
    border-color: var(--primary);
    background: var(--primary-bg);
}
.ok-btn{
    width:100%;
    background: var(--primary);
    color: var(--card-bg);
    border:none;
    border-radius:10px;
    padding:12px;
    margin-top:10px
}
.result-box{
    background:linear-gradient(90deg, var(--primary-light), var(--primary));
    color: var(--card-bg);
    border-radius:12px;
    padding:14px;
    margin-top:12px;
    display:none
}

/* 汉堡菜单样式 */
.hamburger-header {
    position:fixed;
    top:0;
    left:0;
    right:0;
    height:50px;
    background: var(--header-bg);
    box-shadow:0 1px 5px rgba(0,0,0,0.1);
    z-index:999;
    display:flex;
    align-items:center;
    padding:0 15px;
}
.hamburger-btn {
    width:30px;
    height:30px;
    display:flex;
    flex-direction:column;
    justify-content:center;
    gap:5px;
    cursor:pointer;
}
.hamburger-btn span {
    display:block;
    height:3px;
    background: var(--text-color);
    border-radius:3px;
    transition:all 0.3s;
}
.hamburger-menu {
    position:fixed;
    top:50px;
    left:-100%;
    width:80%;
    max-width:300px;
    height:calc(100vh - 50px);
    background: var(--menu-bg);
    box-shadow:2px 0 10px rgba(0,0,0,0.1);
    transition:left 0.3s;
    z-index:998;
    padding:20px 0;
}
.hamburger-menu.active {left:0;}
.hamburger-menu a {
    display:block;
    padding:12px 20px;
    color: var(--text-color);
    text-decoration:none;
    font-size:15px;
    border-bottom:1px solid var(--border-light);
}
.hamburger-menu a:hover {
    background: var(--menu-hover);
    color: var(--link-color);
}
.body-wrap {margin-top:50px;}

/* 专题列表样式 */
.topic-item {
    background: var(--card-bg);
    border-radius:12px;
    padding:15px;
    margin-bottom:15px;
    box-shadow:0 2px 8px rgba(0,0,0,0.08);
    display:flex;
    gap:15px;
    align-items:center;
    text-decoration: none !important;
}
.topic-item img {width:80px;height:80px;border-radius:8px;object-fit:cover;flex-shrink:0;}
.topic-info {flex:1;}
.topic-info h3 {
    margin:0 0 5px;
    font-size:16px;
    color: var(--text-color);
    text-decoration: none;
}
.topic-info p {
    margin:0;
    font-size:13px;
    color: var(--text-light);
    display:-webkit-box;
    -webkit-line-clamp:2;
    -webkit-box-orient:vertical;
    overflow:hidden;
    text-decoration: none;
}
.topic-time {
    font-size:12px;
    color: var(--text-light);
    margin-top:5px;
    display:block;
    text-decoration: none;
}

/* 分页样式 */
.pagination {
    display:flex;
    justify-content:center;
    gap:8px;
    margin: 40px 0 10px 0;
}
.pagination a,.pagination span {
    padding:8px 14px;
    border-radius:8px;
    font-size:14px;
    text-decoration:none;
}
.pagination a {
    background: var(--tag-normal-bg);
    color: var(--text-color);
}
.pagination a:hover {
    background: var(--link-color);
    color: var(--card-bg);
}
.pagination span.current {
    background: var(--link-color);
    color: var(--card-bg);
}
.pagination span.disabled {
    background: var(--border-light);
    color: var(--text-light);
    cursor:not-allowed;
}

/* 常见问题区域 - 手机端优化 */
.faq-section {
    background-color: var(--card-bg);
    padding: 25px 15px;
    border-radius: 10px;
    margin: 15px 0;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}
.faq-list {margin-top: 15px;}
.faq-item {
    margin-bottom: 15px;
    border-bottom: 1px solid var(--border-light);
    padding-bottom: 15px;
}
.faq-question {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-color);
    margin-bottom: 6px;
    display: flex;
    align-items: flex-start;
}
.faq-question::before {
    content: "Q:";
    color: var(--danger-color);
    margin-right: 8px;
    font-weight: bold;
    margin-top: 2px;
}
.faq-answer {
    font-size: 12px;
    color: var(--text-light);
    padding-left: 22px;
    line-height: 1.6;
}
.faq-answer::before {
    content: "A:";
    color: var(--primary);
    margin-right: 8px;
    font-weight: bold;
}
.section-title {
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--primary);
}