/* ===== 全局样式 ===== */
* { margin: 0; padding: 0; box-sizing: border-box; -webkit-tap-highlight-color: transparent; }

/* 动态渐变背景（canvas未加载时的CSS fallback） */
@keyframes bgShift {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

body {
    background: linear-gradient(135deg, #0a0820, #0f0c29, #1a1030, #0f1a2e, #0a0a1a);
    background-size: 400% 400%;
    animation: bgShift 20s ease infinite;
    color: #fff;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Noto Color Emoji", "Apple Color Emoji", "Segoe UI Emoji", sans-serif;
    overflow-x: hidden;
    width: 100vw;
    min-height: 100vh;
    padding-bottom: env(safe-area-inset-bottom, 0);
}

/* ===== 主容器 ===== */
.app {
    width: 100%;
    max-width: 100%;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    background: linear-gradient(180deg, rgba(15,12,41,0.85), rgba(26,26,46,0.8) 30%, rgba(22,33,62,0.8) 70%, rgba(10,10,26,0.9));
    position: relative;
    overflow: hidden;
    margin: 0 auto;
    -webkit-overflow-scrolling: touch;
}

/* ===== 桌面端侧边栏布局包装 ===== */
#pageWrapper {
    display: flex;
    min-height: 100vh;
}

/* ===== 桌面端左侧固定侧边栏 ===== */
.desktop-sidebar {
    display: none;
}

@media (min-width: 1024px) {
    .desktop-sidebar {
        display: flex;
        position: fixed;
        left: 0;
        top: 0;
        width: 240px;
        height: 100vh;
        flex-direction: column;
        background: linear-gradient(180deg, rgba(10,8,32,0.9), rgba(18,18,42,0.85) 40%, rgba(22,33,62,0.85) 100%);
        border-right: 1px solid rgba(255,215,0,0.15);
        z-index: 200;
        padding: 0;
        overflow-y: auto;
        box-shadow: 2px 0 30px rgba(0,0,0,0.3);
    }
    .desktop-sidebar::-webkit-scrollbar { width: 4px; }
    .desktop-sidebar::-webkit-scrollbar-thumb { background: rgba(255,215,0,0.2); border-radius: 2px; }
    
    .sidebar-logo {
        padding: 1.5rem 1.2rem;
        border-bottom: 1px solid rgba(255,215,0,0.1);
        display: flex;
        align-items: center;
        gap: 0.8rem;
    }
    .sidebar-logo .logo-icon {
        width: 42px;
        height: 42px;
        border-radius: 12px;
        background: linear-gradient(135deg, rgba(255,215,0,0.2), rgba(255,215,0,0.05));
        border: 1px solid rgba(255,215,0,0.3);
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 1.3rem;
    }
    .sidebar-logo .logo-text {
        font-size: 1.2rem;
        font-weight: 700;
        background: linear-gradient(90deg, #ffd700, #ffed4e);
        -webkit-background-clip: text;
        -webkit-text-fill-color: transparent;
        letter-spacing: 0.05em;
    }
    .sidebar-logo .logo-sub {
        font-size: 0.7rem;
        color: rgba(255,255,255,0.4);
        display: block;
    }
    
    .sidebar-nav {
        flex: 1;
        padding: 1rem 0.8rem;
    }
    .sidebar-nav-section {
        margin-bottom: 1.5rem;
    }
    .sidebar-nav-title {
        font-size: 0.7rem;
        color: rgba(255,255,255,0.35);
        text-transform: uppercase;
        letter-spacing: 0.1em;
        padding: 0 0.8rem;
        margin-bottom: 0.5rem;
    }
    .sidebar-nav-item {
        display: flex;
        align-items: center;
        gap: 0.8rem;
        padding: 0.7rem 0.8rem;
        border-radius: 8px;
        cursor: pointer;
        transition: all 0.2s;
        text-decoration: none;
        color: rgba(255,255,255,0.7);
        font-size: 0.9rem;
        margin-bottom: 0.2rem;
    }
    .sidebar-nav-item:hover {
        background: rgba(255,215,0,0.08);
        color: #ffd700;
    }
    .sidebar-nav-item.active {
        background: rgba(255,215,0,0.12);
        color: #ffd700;
        border: 1px solid rgba(255,215,0,0.2);
    }
    .sidebar-nav-item .nav-icon {
        font-size: 1.1rem;
        width: 24px;
        text-align: center;
    }
    .sidebar-nav-item .nav-badge {
        margin-left: auto;
        font-size: 0.7rem;
        padding: 0.15rem 0.5rem;
        border-radius: 10px;
        background: rgba(255,215,0,0.15);
        color: #ffd700;
    }
    
    .sidebar-footer {
        padding: 1rem 0.8rem;
        border-top: 1px solid rgba(255,215,0,0.08);
    }
    .sidebar-user {
        display: flex;
        align-items: center;
        gap: 0.6rem;
        padding: 0.5rem 0.8rem;
        border-radius: 8px;
        cursor: pointer;
        transition: all 0.2s;
        text-decoration: none;
    }
    .sidebar-user:hover {
        background: rgba(255,215,0,0.08);
    }
    .sidebar-user .user-avatar {
        width: 32px;
        height: 32px;
        border-radius: 50%;
        background: rgba(255,215,0,0.15);
        border: 1px solid rgba(255,215,0,0.3);
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 0.9rem;
    }
    .sidebar-user .user-info {
        flex: 1;
        min-width: 0;
    }
    .sidebar-user .user-name {
        font-size: 0.85rem;
        color: #ffd700;
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
    }
    .sidebar-user .user-status {
        font-size: 0.7rem;
        color: rgba(255,255,255,0.4);
    }
    
    /* 当侧边栏存在时，主内容区偏移 */
    .app {
        margin-left: 240px;
        width: calc(100% - 240px);
        min-height: 100vh;
        box-shadow: none;
    }
}


/* ===== PC端 内容区域 ===== */
@media (min-width: 1024px) {
    body {
        font-size: 15px;
        background: #0a0a1a;
    }
    .app {
        overflow-y: auto;
    }
    
    /* 页面内容区最大宽度（防止太宽难读） */
    .content-area,
    .profile-container,
    .login-container,
    .register-container,
    .forgot-container,
    .reset-container,
    .more-content {
        max-width: 1100px;
        margin: 0 auto;
    }
    .content-area {
        padding: 2rem 2.5rem;
        padding-bottom: 2rem;
    }
    
    /* 手机端底部导航在桌面隐藏 */
    .bottom-nav {
        display: none !important;
    }
    
    /* 手机端顶部导航在桌面隐藏（用侧边栏替代） */
    .top-nav {
        display: none !important;
    }
    
    /* Hero区域 - 桌面端 */
    .hero-section {
        padding: 3rem 2rem !important;
        border-radius: 0;
    }
    .hero-title {
        font-size: 2.5rem !important;
    }
    .hero-subtitle {
        font-size: 1.1rem !important;
    }
    
    /* 快捷入口 - 桌面端4列 */
    .quick-access {
        grid-template-columns: repeat(4, 1fr) !important;
        gap: 1.2rem !important;
        padding: 1.5rem 2rem !important;
    }
    .quick-card {
        padding: 1.5rem !important;
    }
    .quick-card .icon {
        font-size: 2.5rem !important;
    }
    .quick-card h3 {
        font-size: 1rem !important;
    }
    .quick-card p {
        font-size: 0.85rem !important;
    }
    
    /* 热门模块 - 桌面端4列 */
    .module-grid {
        grid-template-columns: repeat(4, 1fr) !important;
        gap: 1.2rem !important;
    }
    .module-card {
        padding: 1.2rem !important;
    }
    .module-card .icon {
        font-size: 2.2rem !important;
    }
    .module-card h3 {
        font-size: 0.9rem !important;
    }
    .module-card p {
        font-size: 0.78rem !important;
    }
    
    /* 知识卡片 - 桌面端双栏 */
    .knowledge-preview {
        padding: 1rem 2rem !important;
    }
    
    /* 宫格 - 桌面端6列 */
    .grid {
        grid-template-columns: repeat(6, 1fr) !important;
        gap: 1rem !important;
        padding: 1rem 2rem !important;
    }
    .item {
        padding: 1.2rem 0.5rem !important;
    }
    .item .ic {
        font-size: 2.2rem !important;
    }
    .item .lb {
        font-size: 0.8rem !important;
    }
    
    /* 更多页面 - 模块列表桌面端5列 */
    .module-list {
        grid-template-columns: repeat(5, 1fr) !important;
    }
    .category-section {
        display: block !important;
    }
    
    /* 表单页面 - 桌面端居中卡片 */
    .form-page {
        display: flex;
        align-items: center;
        justify-content: center;
    }
    .form-page .form-hd {
        width: 100%;
        max-width: 500px;
        margin: 0 auto 1rem;
    }
    
    /* 个人中心 - 桌面端布局 */
    .profile-stats {
        grid-template-columns: repeat(3, 1fr) !important;
        gap: 1.2rem !important;
    }
    
    /* 按钮桌面端优化 */
    button, .btn, .submit-btn, .tab-btn {
        min-height: 40px;
    }
    
    /* 知识科普区桌面端双栏 */
    .knowledge-card-large {
        padding: 2rem !important;
    }
    
    /* 搜索结果区 */
    .search-box .search-input {
        font-size: 1rem !important;
        padding: 0.9rem 1rem 0.9rem 2.8rem !important;
    }
}

/* ===== 平板端适配 ===== */
@media (min-width: 768px) and (max-width: 1023px) {
    .app {
        max-width: 100%;
    }
    .content-area {
        padding: 1.5rem;
        max-width: 800px;
        margin: 0 auto;
    }
    .grid {
        grid-template-columns: repeat(4, 1fr) !important;
        gap: 0.8rem !important;
        padding: 1rem 1.5rem !important;
    }
    .quick-access {
        grid-template-columns: repeat(3, 1fr) !important;
        gap: 1rem !important;
        padding: 1rem 1.5rem !important;
    }
    .module-grid {
        grid-template-columns: repeat(3, 1fr) !important;
    }
    .module-list {
        grid-template-columns: repeat(3, 1fr) !important;
    }
    .top-nav, .bottom-nav {
        max-width: 100%;
    }
    .hero-title {
        font-size: 1.8rem !important;
    }
    body {
        font-size: 15px;
    }
}

/* ===== 手机端适配 ===== */
@media (max-width: 767px) {
    body {
        padding-bottom: env(safe-area-inset-bottom, 0);
    }
    .nav {
        padding-bottom: env(safe-area-inset-bottom, 0);
        height: calc(60px + env(safe-area-inset-bottom, 0px));
    }
    .item .lb {
        font-size: 0.65rem;
    }
    button, .btn, .submit-btn, .tab-btn {
        min-height: 44px;
        touch-action: manipulation;
    }
    input[type="text"],
    input[type="date"],
    input[type="email"],
    input[type="password"],
    select,
    textarea {
        font-size: 16px !important;
    }
    
    /* 手机端内容区底部留空给底部导航 */
    .content-area {
        padding-bottom: 80px;
    }
    .module-list {
        grid-template-columns: repeat(2, 1fr);
    }
    .category-tabs {
        flex-wrap: wrap;
    }
}

/* ===== 动态星空背景 ===== */
.stars {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 0;
}

.star {
    position: absolute;
    background: #fff;
    border-radius: 50%;
    animation: twinkle var(--dur) ease-in-out infinite;
}

@keyframes twinkle {
    0%, 100% { opacity: 0.2; transform: scale(0.8); }
    50% { opacity: 1; transform: scale(1.2); }
}

/* ===== 头部 ===== */
.hd {
    position: sticky;
    top: 0;
    z-index: 100;
    background: linear-gradient(180deg, rgba(15,12,41,0.9), rgba(26,26,46,0.85));
    backdrop-filter: blur(20px);
    padding: 0.8rem 1rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-bottom: 1px solid rgba(255,215,0,0.15);
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.logo-t {
    font-size: 1.2rem;
    font-weight: 700;
    background: linear-gradient(90deg, #ffd700, #ffed4e);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    letter-spacing: 0.1em;
}

/* ===== 搜索框 ===== */
.sch {
    padding: 0.5rem 1rem;
    background: rgba(255,255,255,0.03);
}

.sch-in {
    width: 100%;
    padding: 0.6rem 1rem;
    border-radius: 20px;
    border: 1px solid rgba(255,215,0,0.2);
    background: rgba(255,255,255,0.05);
    color: #fff;
    font-size: 0.85rem;
    outline: none;
}

.sch-in::placeholder {
    color: rgba(255,255,255,0.3);
}

/* ===== 功能宫格 ===== */
.grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0.5rem;
    padding: 0.8rem 1rem;
}

.item {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 0.8rem 0.2rem;
    border-radius: 12px;
    background: linear-gradient(135deg, rgba(255,215,0,0.08), rgba(255,215,0,0.02));
    border: 1px solid rgba(255,215,0,0.1);
    cursor: pointer;
    transition: all 0.3s;
}

.item:active {
    transform: scale(0.95);
    background: linear-gradient(135deg, rgba(255,215,0,0.15), rgba(255,215,0,0.05));
}

.item:hover {
    background: linear-gradient(135deg, rgba(255,215,0,0.12), rgba(255,215,0,0.04));
    transform: translateY(-2px);
}

.item .ic {
    font-size: 1.8rem;
    margin-bottom: 0.3rem;
}

.item .lb {
    font-size: 0.7rem;
    color: rgba(255,255,255,0.8);
    text-align: center;
}

/* ===== 板块区 ===== */
.sec {
    padding: 0.8rem 1rem;
}

.sec-t {
    font-size: 1rem;
    font-weight: 600;
    color: #ffd700;
    margin-bottom: 0.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.sec-t::before {
    content: '';
    display: inline-block;
    width: 3px;
    height: 1rem;
    background: linear-gradient(180deg, #ffd700, transparent);
    border-radius: 2px;
}

/* ===== 知识卡片 ===== */
.know-card {
    background: linear-gradient(135deg, rgba(255,215,0,0.05), rgba(255,215,0,0.02));
    border: 1px solid rgba(255,215,0,0.1);
    border-radius: 12px;
    padding: 1rem;
    margin-bottom: 1rem;
    cursor: pointer;
    transition: all 0.3s;
}

.know-card:hover {
    background: linear-gradient(135deg, rgba(255,215,0,0.1), rgba(255,215,0,0.03));
}

.know-card h3 {
    color: #ffd700;
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
}

.know-card p {
    font-size: 0.8rem;
    line-height: 1.6;
    color: rgba(255,255,255,0.7);
}

/* ===== 表单页面 ===== */
.form-page {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background: linear-gradient(180deg, #0f0c29, #1a1a2e 30%, #16213e 70%, #0a0a1a);
    z-index: 200;
    overflow-y: auto;
    padding: 1rem;
    display: none;
}

.form-page.show {
    display: block;
}

.form-hd {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 0;
    border-bottom: 1px solid rgba(255,215,0,0.1);
    margin-bottom: 1rem;
}

.form-hd h2 {
    font-size: 1.2rem;
    color: #ffd700;
}

.form-close {
    width: 30px;
    height: 30px;
    border-radius: 50%;
    background: rgba(255,255,255,0.1);
    border: none;
    color: #fff;
    font-size: 1.2rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* ===== 表单控件 ===== */
.f-field {
    margin-bottom: 1rem;
}

.f-label {
    display: block;
    font-size: 0.85rem;
    color: rgba(255,255,255,0.8);
    margin-bottom: 0.5rem;
}

.f-input {
    width: 100%;
    padding: 0.8rem;
    border-radius: 8px;
    border: 1px solid rgba(255,215,0,0.2);
    background: rgba(255,255,255,0.05);
    color: #fff;
    font-size: 0.9rem;
    outline: none;
}

.f-input:focus {
    border-color: rgba(255,215,0,0.5);
}

.f-btn {
    width: 100%;
    padding: 0.8rem;
    border-radius: 8px;
    border: none;
    background: linear-gradient(135deg, #ffd700, #ffed4e);
    color: #000;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    margin-top: 1rem;
}

.f-btn:active {
    transform: scale(0.98);
}

/* ===== 结果页面 ===== */
.result-page {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background: linear-gradient(180deg, #0f0c29, #1a1a2e 30%, #16213e 70%, #0a0a1a);
    z-index: 300;
    overflow-y: auto;
    padding: 1rem;
    display: none;
}

.result-page.show {
    display: block;
}

.result-hd {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 0;
    border-bottom: 1px solid rgba(255,215,0,0.1);
    margin-bottom: 1rem;
}

.result-hd h2 {
    font-size: 1.2rem;
    color: #ffd700;
}

.result-close {
    width: 30px;
    height: 30px;
    border-radius: 50%;
    background: rgba(255,255,255,0.1);
    border: none;
    color: #fff;
    font-size: 1.2rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
}

.result-body {
    padding: 1rem 0;
}

.result-section {
    background: linear-gradient(135deg, rgba(255,215,0,0.05), rgba(255,215,0,0.02));
    border: 1px solid rgba(255,215,0,0.1);
    border-radius: 12px;
    padding: 1rem;
    margin-bottom: 1rem;
}

.result-section h3 {
    color: #ffd700;
    font-size: 1rem;
    margin-bottom: 0.8rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid rgba(255,215,0,0.1);
}

.result-section p {
    font-size: 0.85rem;
    line-height: 1.8;
    color: rgba(255,255,255,0.8);
    margin-bottom: 0.5rem;
}

.result-table {
    width: 100%;
    border-collapse: collapse;
    margin: 1rem 0;
}

.result-table th,
.result-table td {
    padding: 0.5rem;
    text-align: left;
    font-size: 0.8rem;
    border-bottom: 1px solid rgba(255,215,0,0.1);
}

.result-table th {
    color: #ffd700;
    font-weight: 600;
}

/* ===== 知识内容区 ===== */
.knowledge-content {
    padding: 1rem;
    line-height: 1.8;
}

.knowledge-content h2 {
    color: #ffd700;
    font-size: 1.1rem;
    margin: 1.5rem 0 1rem 0;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid rgba(255,215,0,0.2);
}

.knowledge-content h3 {
    color: #ffd700;
    font-size: 1rem;
    margin: 1.2rem 0 0.8rem 0;
}

.knowledge-content p {
    font-size: 0.85rem;
    color: rgba(255,255,255,0.8);
    margin-bottom: 0.8rem;
}

.knowledge-content ul,
.knowledge-content ol {
    margin-left: 1.5rem;
    margin-bottom: 1rem;
}

.knowledge-content li {
    font-size: 0.85rem;
    color: rgba(255,255,255,0.8);
    margin-bottom: 0.5rem;
    line-height: 1.6;
}

.knowledge-content table {
    width: 100%;
    border-collapse: collapse;
    margin: 1rem 0;
    font-size: 0.8rem;
}

.knowledge-content th,
.knowledge-content td {
    padding: 0.5rem;
    border: 1px solid rgba(255,215,0,0.2);
    text-align: left;
}

.knowledge-content th {
    background: rgba(255,215,0,0.1);
    color: #ffd700;
}

/* ===== 响应式表格 ===== */
.table-responsive {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

/* ===== 广告区 ===== */
.ad-box {
    padding: 0.5rem 1rem;
    background: rgba(255,255,255,0.02);
    border-top: 1px solid rgba(255,215,0,0.1);
    border-bottom: 1px solid rgba(255,215,0,0.1);
}

/* ===== 顶部导航 ===== */
.top-nav {
    position: sticky;
    top: 0;
    left: 0;
    width: 100%;
    max-width: 100%;
    margin: 0 auto;
    background: linear-gradient(180deg, rgba(15,12,41,0.9), rgba(26,26,46,0.85));
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255,215,0,0.15);
    display: flex;
    z-index: 100;
}

.top-nav .nav-item {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 0.5rem 0;
    cursor: pointer;
    transition: all 0.3s;
    text-decoration: none;
}

.top-nav .nav-item.active {
    color: #ffd700;
}

.top-nav .nav-icon {
    font-size: 1.2rem;
    margin-bottom: 0.2rem;
}

.top-nav .nav-item span {
    font-size: 0.6rem;
    color: rgba(255,255,255,0.5);
}

.top-nav .nav-item.active span {
    color: #ffd700;
}

/* ===== 占位符（防止内容被顶导航遮挡） ===== */
.placeholder-nav {
    height: 50px;
}

/* ===== 底部导航 ===== */
.bottom-nav {
    position: sticky;
    bottom: 0;
    left: 0;
    width: 100%;
    max-width: 100%;
    margin: 0 auto;
    background: linear-gradient(180deg, rgba(26,26,46,0.95), rgba(15,12,41,0.98));
    backdrop-filter: blur(20px);
    border-top: 1px solid rgba(255,215,0,0.15);
    display: flex;
    z-index: 100;
}

.bottom-nav .nav-item {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 0.6rem 0;
    text-decoration: none;
    cursor: pointer;
    transition: all 0.3s;
}

.bottom-nav .nav-item.active {
    color: #ffd700;
}

.bottom-nav .nav-icon {
    font-size: 1.2rem;
    margin-bottom: 0.2rem;
}

.bottom-nav .nav-item span {
    font-size: 0.6rem;
    color: rgba(255,255,255,0.5);
}

.bottom-nav .nav-item.active span {
    color: #ffd700;
}

/* ===== 主内容区 ===== */
.main {
    flex: 1;
    overflow-y: auto;
}

/* ===== 隐藏滚动条 ===== */
.main::-webkit-scrollbar,
.form-page::-webkit-scrollbar,
.result-page::-webkit-scrollbar {
    display: none;
}

/* ===== 动画 ===== */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.fade-in {
    animation: fadeIn 0.5s ease-out;
}

/* ===== 加载动画 ===== */
.loading {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
}

.loading::after {
    content: '';
    width: 30px;
    height: 30px;
    border: 3px solid rgba(255,215,0,0.3);
    border-top-color: #ffd700;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* ===== 提示框 ===== */
.toast {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: rgba(0,0,0,0.85);
    color: #fff;
    padding: 1rem 2rem;
    border-radius: 8px;
    font-size: 0.9rem;
    z-index: 1000;
    display: none;
    max-width: 90vw;
    text-align: center;
}

.toast.show {
    display: block;
    animation: fadeIn 0.3s ease-out;
}

/* ===== 通用工具类 ===== */
.text-center { text-align: center; }
.text-gold { color: #ffd700; }
.mt-1 { margin-top: 1rem; }
.mb-1 { margin-bottom: 1rem; }
.p-1 { padding: 1rem; }

/* ===== 模块区块样式 ===== */
.section {
    background: linear-gradient(135deg, rgba(255,215,0,0.05), rgba(255,215,0,0.02));
    border: 1px solid rgba(255,215,0,0.15);
    border-radius: 12px;
    padding: 1.5rem;
    margin-bottom: 1rem;
}

/* ===== 页面头部（模块/子页面通用） ===== */
.page-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    background: linear-gradient(180deg, rgba(15,12,41,0.9), rgba(26,26,46,0.85));
    border-bottom: 1px solid rgba(255,215,0,0.15);
    position: sticky;
    top: 0;
    z-index: 50;
}
.page-header h1 {
    font-size: 1.2rem;
    color: #ffd700;
    font-weight: 600;
}
.back-btn {
    background: rgba(255,215,0,0.1);
    border: 1px solid rgba(255,215,0,0.3);
    border-radius: 8px;
    color: #ffd700;
    font-size: 1rem;
    cursor: pointer;
    padding: 0.5rem 1rem;
    display: flex;
    align-items: center;
    gap: 0.3rem;
    transition: all 0.3s;
}
.back-btn:hover {
    background: rgba(255,215,0,0.2);
}

/* ===== 桌面端有侧边栏时隐藏page-header ===== */
@media (min-width: 1024px) {
    .has-desktop-sidebar .page-header {
        display: none;
    }
}

/* ============================================================
   大数据联网实时分析 - UI 组件样式
   ============================================================ */

/* -------- Loading 全屏遮罩 -------- */
.fortune-loading-overlay {
    position: fixed;
    top: 0; left: 0;
    width: 100%; height: 100%;
    background: rgba(15, 12, 41, 0.92);
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    backdrop-filter: blur(5px);
    animation: fortuneFadeIn 0.3s ease;
}
.fortune-loading-hide {
    animation: fortuneFadeOut 0.3s ease forwards;
}
@keyframes fortuneFadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}
@keyframes fortuneFadeOut {
    from { opacity: 1; }
    to { opacity: 0; }
}
.fortune-loading-content {
    text-align: center;
}
.fortune-spinner {
    width: 50px; height: 50px;
    border: 3px solid rgba(255,215,0,0.15);
    border-top-color: #ffd700;
    border-radius: 50%;
    animation: fortuneSpin 0.8s linear infinite;
    margin: 0 auto 1.5rem;
}
@keyframes fortuneSpin {
    to { transform: rotate(360deg); }
}
.fortune-loading-text {
    color: #ffd700;
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}
.fortune-loading-sub {
    color: rgba(255,255,255,0.5);
    font-size: 0.85rem;
}

/* -------- 数据来源标识 -------- */
.fortune-data-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.35rem 0.8rem;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 500;
    margin-bottom: 1rem;
}
.badge-realtime {
    background: rgba(76, 175, 80, 0.15);
    border: 1px solid rgba(76, 175, 80, 0.3);
    color: #4caf50;
}
.badge-cached {
    background: rgba(255, 193, 7, 0.15);
    border: 1px solid rgba(255, 193, 7, 0.3);
    color: #ffc107;
}
.badge-local {
    background: rgba(33, 150, 243, 0.15);
    border: 1px solid rgba(33, 150, 243, 0.3);
    color: #2196f3;
}
.badge-fallback {
    background: rgba(244, 67, 54, 0.15);
    border: 1px solid rgba(244, 67, 54, 0.3);
    color: #f44336;
}

/* -------- 错误状态 -------- */
.fortune-error-state {
    background: linear-gradient(135deg, rgba(244,67,54,0.08), rgba(244,67,54,0.02));
    border: 1px solid rgba(244,67,54,0.2);
    border-radius: 12px;
    padding: 2rem;
    text-align: center;
    margin: 1rem 0;
}
.fortune-error-icon {
    font-size: 2.5rem;
    margin-bottom: 0.8rem;
}
.fortune-error-message {
    color: rgba(255,255,255,0.8);
    font-size: 0.95rem;
    margin-bottom: 1.2rem;
    line-height: 1.6;
}
.fortune-error-actions {
    display: flex;
    gap: 0.8rem;
    justify-content: center;
    flex-wrap: wrap;
}
.fortune-btn {
    padding: 0.6rem 1.2rem;
    border-radius: 8px;
    font-size: 0.85rem;
    cursor: pointer;
    border: none;
    font-weight: 500;
    transition: all 0.2s;
}
.fortune-btn-retry {
    background: linear-gradient(135deg, #d4a017, #ffd700);
    color: #1a1a2e;
}
.fortune-btn-retry:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(255,215,0,0.3);
}
.fortune-btn-fallback {
    background: rgba(255,255,255,0.08);
    border: 1px solid rgba(255,215,0,0.2);
    color: rgba(255,255,255,0.8);
}
.fortune-btn-fallback:hover {
    background: rgba(255,215,0,0.1);
}

/* -------- 图片分析结果（升级版） -------- */
.image-analysis-result {
    background: linear-gradient(135deg, rgba(255,215,0,0.08), rgba(255,215,0,0.02));
    border: 1px solid rgba(255,215,0,0.15);
    border-radius: 12px;
    padding: 1.5rem;
    margin-top: 1rem;
}
.image-analysis-result h3 {
    color: #ffd700;
    margin-bottom: 1rem;
    font-size: 1rem;
}
.analysis-text {
    white-space: pre-wrap;
    font-family: inherit;
    color: rgba(255,255,255,0.85);
    line-height: 1.8;
    font-size: 0.9rem;
    background: rgba(0,0,0,0.2);
    padding: 1rem;
    border-radius: 8px;
    margin: 0.8rem 0;
}
.image-analysis-result .close-btn {
    background: rgba(255,215,0,0.15);
    color: #ffd700;
    border: 1px solid rgba(255,215,0,0.3);
    border-radius: 8px;
    padding: 0.6rem 1.2rem;
    cursor: pointer;
    font-size: 0.9rem;
    font-weight: bold;
    transition: all 0.2s;
}
.image-analysis-result .close-btn:hover {
    background: rgba(255,215,0,0.25);
    border-color: rgba(255,215,0,0.5);
}

/* -------- API状态指示器（页面顶部） -------- */
.fortune-status-bar {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.4rem 1rem;
    font-size: 0.7rem;
    color: rgba(255,255,255,0.5);
    background: rgba(0,0,0,0.3);
    border-bottom: 1px solid rgba(255,215,0,0.05);
}
.fortune-status-dot {
    width: 6px; height: 6px;
    border-radius: 50%;
    background: #4caf50;
}
.fortune-status-dot.offline {
    background: #f44336;
}

/* ============================================================
   桌面端 App 推荐横幅
   ============================================================ */
.desktop-app-banner {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 999;
    background: linear-gradient(135deg, rgba(15,12,41,0.95), rgba(26,26,46,0.95));
    border-bottom: 1px solid rgba(255,215,0,0.2);
    backdrop-filter: blur(10px);
    animation: bannerSlideDown 0.4s ease;
}
@keyframes bannerSlideDown {
    from { transform: translateY(-100%); }
    to   { transform: translateY(0); }
}
.desktop-app-banner-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0.6rem 1.5rem;
    gap: 1rem;
}
.desktop-app-banner-text {
    display: flex;
    align-items: center;
    gap: 0.8rem;
    flex-wrap: wrap;
}
.desktop-app-banner-text strong {
    color: #ffd700;
    font-size: 0.9rem;
}
.desktop-app-banner-text span {
    color: rgba(255,255,255,0.5);
    font-size: 0.78rem;
}
.desktop-app-banner-actions {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    flex-shrink: 0;
}
.desktop-app-banner-btn {
    padding: 0.4rem 1rem;
    background: linear-gradient(135deg, #ffd700, #ffaa00);
    border: none;
    border-radius: 6px;
    color: #1a1a2e;
    font-size: 0.8rem;
    font-weight: bold;
    text-decoration: none;
    cursor: pointer;
    transition: opacity 0.2s;
}
.desktop-app-banner-btn:hover { opacity: 0.85; }
.desktop-app-banner-close {
    background: none;
    border: none;
    color: rgba(255,255,255,0.3);
    font-size: 1rem;
    cursor: pointer;
    padding: 0.2rem;
}
.desktop-app-banner-close:hover { color: rgba(255,255,255,0.6); }

/* 有 banner 时 body 顶部偏移 */
body.has-desktop-banner {
    padding-top: 52px !important;
}

/* ============================================================
   桌面端子页面表单布局修复
   ============================================================ */
@media (min-width: 1024px) {
    /* 侧边栏注入后的主内容区 */
    body.has-desktop-sidebar .app {
        margin-left: 240px;
        width: calc(100% - 240px);
    }

    /* 模块页面表单居中 */
    body.has-desktop-sidebar .page-container,
    body.has-desktop-sidebar .content-area {
        max-width: 900px;
        margin: 0 auto;
        padding: 2rem;
    }

    /* 表单字段双列布局 */
    body.has-desktop-sidebar .form-row {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 1rem;
    }

    /* 按钮组 */
    body.has-desktop-sidebar .btn-group {
        display: flex;
        gap: 1rem;
        justify-content: center;
    }
    body.has-desktop-sidebar .btn-group .btn-primary,
    body.has-desktop-sidebar .btn-group .btn-secondary {
        flex: 0 0 auto;
        min-width: 200px;
    }

    /* 结果页面 */
    body.has-desktop-sidebar .result-page {
        left: 240px;
        width: calc(100% - 240px);
    }

    /* 下载横幅在桌面侧边栏存在时调整 */
    body.has-desktop-sidebar .dl-banner {
        margin: 0.5rem 2rem 0.5rem;
    }
}

/* ============================================================
   data-device 属性基础适配
   ============================================================ */
html[data-device="desktop"] body {
    font-size: 15px;
}
html[data-device="mobile"] body {
    font-size: 14px;
}
html[data-device="tablet"] body {
    font-size: 15px;
}