/* 前端用户界面样式 - 大厂标准设计 */

/* ========== CSS 重置与基础样式 ========== */
*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}



/* ========== 设计系统 - CSS 变量 ========== */
:root {
    /* 主题色 - 新蓝白色系 */
    --primary-color: #2E58EB;
    --primary-hover: #57AAF6;
    --primary-active: #1E40AF;
    --primary-light-1: #B0E3FE;
    --primary-light-2: #DBEDFF;
    --secondary-color: #6B56EB;
    
    /* 辅助色 */
    --success-color: #52c41a;
    --warning-color: #faad14;
    --error-color: #f5222d;
    --info-color: #1890ff;
    
    /* 中性色 */
    --text-primary: #1f2937;
    --text-regular: #4b5563;
    --text-secondary: #6b7280;
    --text-placeholder: #9ca3af;

    /* 深色/强调色（用于页脚等） */
    --dark-color: #0b1220;
    --dark-color-2: #111b2e;
    
    --bg-primary: #ffffff;
    --bg-secondary: #f9fafb;
    --bg-tertiary: #f3f4f6;
    --bg-disabled: #f9fafb;
    
    --border-color: #e5e7eb;
    --border-light: #f3f4f6;
    --border-dark: #d1d5db;
    
    /* 阴影效果 */
    --shadow-sm: 0 1px 2px 0 #E3E6EE;
    --shadow-md: 0 2px 10px 0 #E3E6EE;
    --shadow-lg: 0 2px 20px 0 #E3E6EE;
    --shadow-xl: 0 4px 30px 0 #E3E6EE;
    --shadow-card: 0 2px 20px 0 #E3E6EE;

    /* 玻璃质感 */
    --glass-bg: rgba(255, 255, 255, 0.72);
    --glass-border: rgba(255, 255, 255, 0.35);
    
    /* 圆角 */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 10px;
    --radius-xl: 12px;
    --radius-2xl: 16px;
    
    /* 间距 */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    --spacing-2xl: 48px;
    
    /* 字体 */
    --font-size-xs: 12px;
    --font-size-sm: 14px;
    --font-size-md: 16px;
    --font-size-lg: 18px;
    --font-size-xl: 20px;
    --font-size-2xl: 24px;
    --font-size-3xl: 32px;
    
    /* 行高 */
    --line-height-xs: 1.3;
    --line-height-sm: 1.4;
    --line-height-md: 1.5;
    --line-height-lg: 1.6;
    
    /* 过渡动画 */
    --transition-fast: 0.15s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    
    /* 渐变色 */
    --gradient-primary: linear-gradient(135deg, #B0E3FE 0%, #2E58EB 100%);
    --gradient-secondary: linear-gradient(135deg, #F8E5B7 0%, #F5C572 100%);
}

/* ========== 基础样式 ========== */
body {
    font-family: var(--font-family);
    font-size: var(--font-size-md);
    line-height: var(--line-height-lg);
    color: var(--text-regular);
    background-color: var(--bg-secondary);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* ========== 排版与默认元素 ========== */
a {
    color: var(--primary-color);
    text-decoration: none;
    transition: color var(--transition-base);
}

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

h1, h2, h3, h4, h5, h6 {
    color: var(--text-primary);
    line-height: 1.25;
}

/* 让内容区更“高级”的背景层次 */
body::before {
    content: '';
    position: fixed;
    inset: 0;
    background:
        radial-gradient(1200px 600px at 20% -10%, rgba(22, 119, 255, 0.16), transparent 55%),
        radial-gradient(1000px 500px at 110% 10%, rgba(82, 196, 26, 0.10), transparent 50%),
        radial-gradient(900px 500px at 50% 120%, rgba(250, 173, 20, 0.10), transparent 55%);
    pointer-events: none;
    z-index: -1;
}

/* ========== 布局容器 ========== */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--spacing-2xl) var(--spacing-lg);
}

.container-with-tab {
    padding: var(--spacing-2xl) var(--spacing-lg) 80px;
}

/* ========== 头部导航 ========== */
.header {
    background-color: var(--bg-primary);
    box-shadow: var(--shadow-sm);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 64px;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

.logo {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--primary-color);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: var(--spacing-xl);
    list-style: none;
}

.nav-menu a {
    text-decoration: none;
    color: var(--text-regular);
    font-size: var(--font-size-md);
    font-weight: 500;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
    display: inline-block;
}

.nav-menu a:hover {
    color: var(--primary-color);
    background-color: var(--primary-light-1);
}

.nav-menu a.active {
    color: var(--primary-color);
    background-color: var(--primary-light-1);
}

.user-menu {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

/* 移动端菜单按钮 */
.mobile-menu-toggle {
    display: none;
    background: none;
    border: 1px solid var(--border-color);
    color: var(--text-regular);
    font-size: var(--font-size-xl);
    cursor: pointer;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
}

.mobile-menu-toggle:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
    background-color: var(--primary-light-1);
}

/* ========== 按钮组件 ========== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-family);
    font-size: var(--font-size-sm);
    font-weight: 500;
    line-height: 1.5;
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--radius-md);
    border: 1px solid transparent;
    cursor: pointer;
    transition: all var(--transition-base);
    text-decoration: none;
    outline: none;
    user-select: none;
    white-space: nowrap;
}

/* 线框按钮（被页面大量使用：btn-outline） */
.btn-outline {
    background-color: transparent;
    color: var(--primary-color);
    border: 1px solid rgba(22, 119, 255, 0.35);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}

.btn-outline:hover:not(:disabled) {
    border-color: var(--primary-color);
    background-color: rgba(22, 119, 255, 0.08);
    box-shadow: var(--shadow-sm);
}

/* 链接按钮（被志愿页使用：btn-link） */
.btn-link {
    background: transparent;
    border: none;
    padding: 0;
    color: var(--primary-color);
    font-weight: 500;
}

.btn-link:hover:not(:disabled) {
    color: var(--primary-hover);
    text-decoration: underline;
}

/* 主要按钮 */
.btn-primary {
    background-color: var(--primary-color);
    color: var(--bg-primary);
    box-shadow: var(--shadow-sm);
}

.btn-primary:hover:not(:disabled) {
    background-color: var(--primary-hover);
    box-shadow: var(--shadow-md);
}

.btn-primary:active:not(:disabled) {
    background-color: var(--primary-active);
}

/* 次要按钮 */
.btn-secondary {
    background-color: var(--bg-primary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover:not(:disabled) {
    color: var(--primary-color);
    border-color: var(--primary-color);
    background-color: var(--bg-primary);
}

/* 虚线按钮 */
.btn-dashed {
    background-color: var(--bg-primary);
    color: var(--text-primary);
    border: 1px dashed var(--border-color);
}

.btn-dashed:hover:not(:disabled) {
    color: var(--primary-color);
    border-color: var(--primary-color);
    background-color: var(--bg-primary);
}

/* 文本按钮 */
.btn-text {
    background-color: transparent;
    color: var(--text-primary);
    border: none;
    padding: var(--spacing-xs) var(--spacing-sm);
}

.btn-text:hover:not(:disabled) {
    color: var(--primary-color);
    background-color: var(--primary-light-1);
}

/* 危险按钮 */
.btn-danger {
    background-color: var(--error-color);
    color: var(--bg-primary);
}

.btn-danger:hover:not(:disabled) {
    background-color: #ff4d4f;
}

/* 按钮尺寸 */
.btn-sm {
    padding: var(--spacing-xs) var(--spacing-md);
    font-size: var(--font-size-xs);
}

.btn-lg {
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: var(--font-size-md);
}

/* 禁用状态 */
.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    box-shadow: none;
}

/* ========== 卡片组件 ========== */
.card {
    background-color: var(--bg-primary);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-card);
    border: 1px solid var(--border-color);
    overflow: hidden;
    transition: all var(--transition-base);
}

.card:hover {
    box-shadow: var(--shadow-md);
}

.card-header {
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--border-color);
    background-color: var(--bg-primary);
}

.card-title {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
}

.card-body {
    padding: var(--spacing-lg);
}

.card-footer {
    padding: var(--spacing-lg);
    border-top: 1px solid var(--border-color);
    background-color: var(--bg-primary);
}

/* 内容卡片 */
.content-card {
    background-color: var(--bg-primary);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-card);
    border: 1px solid var(--border-color);
    padding: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

/* 二层卡片 */
.card-inner {
    background-color: var(--bg-primary);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-light);
    padding: var(--spacing-lg);
    margin: var(--spacing-md) 0;
}

.content-card h2 {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-md);
    border-bottom: 2px solid var(--primary-color);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.content-card h3 {
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--text-primary);
    margin: var(--spacing-xl) 0 var(--spacing-lg);
}

/* ========== 表单组件 ========== */
.form-container {
    max-width: 800px;
    margin: var(--spacing-2xl) auto;
    background-color: var(--bg-primary);
    padding: var(--spacing-xl);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-card);
    border: 1px solid var(--border-color);
}

.form-container h2 {
    text-align: center;
    margin-bottom: var(--spacing-xl);
    color: var(--text-primary);
    font-size: var(--font-size-2xl);
    font-weight: 700;
}

.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-label {
    display: block;
    margin-bottom: var(--spacing-xs);
    font-weight: 500;
    color: var(--text-primary);
    font-size: var(--font-size-sm);
}

.form-control {
    display: block;
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    font-family: var(--font-family);
    font-size: var(--font-size-md);
    line-height: var(--line-height-md);
    color: var(--text-primary);
    background-color: var(--bg-primary);
    background-clip: padding-box;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
    outline: none;
}

.form-control:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 2px rgba(22, 119, 255, 0.2);
}

.form-control:hover:not(:disabled):not(:focus) {
    border-color: var(--primary-hover);
}

.form-control:disabled {
    background-color: var(--bg-disabled);
    border-color: var(--border-color);
    color: var(--text-placeholder);
    cursor: not-allowed;
}

.form-control::placeholder {
    color: var(--text-placeholder);
}

.form-textarea {
    resize: vertical;
    min-height: 120px;
}

.form-select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3e%3cpath stroke='%236b7280' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='M6 8l4 4 4-4'/%3e%3c/svg%3e");
    background-position: right 0.5rem center;
    background-repeat: no-repeat;
    background-size: 1.5em 1.5em;
    padding-right: 2.5rem;
}

/* ========== 表格组件 ========== */
.table-wrapper {
    overflow-x: auto;
    background-color: var(--bg-primary);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-card);
    border: 1px solid var(--border-color);
    margin-bottom: var(--spacing-xl);
}

.table {
    width: 100%;
    border-collapse: collapse;
    background-color: var(--bg-primary);
}

.table thead {
    background-color: var(--bg-tertiary);
}

.table th {
    padding: var(--spacing-md);
    text-align: left;
    font-weight: 600;
    color: var(--text-primary);
    font-size: var(--font-size-sm);
    border-bottom: 2px solid var(--border-color);
}

.table td {
    padding: var(--spacing-md);
    color: var(--text-regular);
    border-bottom: 1px solid var(--border-light);
    transition: background-color var(--transition-base);
}

.table tbody tr:hover td {
    background-color: var(--bg-secondary);
}

.table tbody tr:last-child td {
    border-bottom: none;
}

/* ========== 统计卡片 ========== */
.stat-box {
    background: var(--gradient-primary);
    color: var(--bg-primary);
    padding: var(--spacing-xl);
    border-radius: var(--radius-xl);
    text-align: center;
    box-shadow: var(--shadow-card);
    transition: all var(--transition-base);
}

.stat-box:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.stat-box .number {
    font-size: 36px;
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
}

.stat-box .label {
    font-size: var(--font-size-sm);
    opacity: 0.9;
}

/* ========== 用户个人中心布局 ========== */
.user-dashboard {
    display: grid;
    grid-template-columns: 260px minmax(0, 1fr);
    gap: var(--spacing-xl);
    margin: var(--spacing-xl) 0;
    align-items: flex-start;
}

.sidebar-menu {
    background-color: var(--bg-primary);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-card);
    border: 1px solid var(--border-color);
    padding: var(--spacing-lg);
    position: sticky;
    top: 88px;
    height: fit-content;
}

.sidebar-menu ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.sidebar-menu li + li {
    margin-top: var(--spacing-xs);
}

.sidebar-menu a {
    display: block;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    color: var(--text-regular);
    text-decoration: none;
    transition: all var(--transition-base);
    font-size: var(--font-size-sm);
}

.sidebar-menu a:hover {
    background-color: var(--bg-tertiary);
    color: var(--primary-color);
}

.sidebar-menu a.active {
    color: var(--primary-color);
    background-color: var(--primary-light-1);
    font-weight: 500;
}

.dashboard-welcome {
    margin-bottom: var(--spacing-xl);
}

.dashboard-welcome .card-body {
    background: var(--gradient-primary);
    color: #fff;
}

.dashboard-title {
    font-size: var(--font-size-2xl);
    font-weight: 800;
    margin: 0 0 var(--spacing-xs) 0;
}

.dashboard-subtitle {
    margin: 0;
    opacity: 0.92;
}

/* 欢迎区：标题/副标题固定白色，更高级 */
.dashboard-welcome .dashboard-title {
    color: #ffffff;
}

.dashboard-welcome .dashboard-subtitle {
    color: rgba(255, 255, 255, 0.92);
}

.dashboard-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.dashboard-permissions-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-lg);
}

.status-pills {
    margin-top: var(--spacing-lg);
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.status-pill {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 4px 10px;
    border-radius: 999px;
    font-size: var(--font-size-xs);
    font-weight: 600;
    background: rgba(15, 23, 42, 0.18);
    border: 1px solid rgba(255, 255, 255, 0.24);
    color: #e5e7eb;
}

.status-pill.online {
    background: rgba(34, 197, 94, 0.20);
    border-color: rgba(187, 247, 208, 0.7);
}

.status-pill.offline {
    background: rgba(248, 113, 113, 0.20);
    border-color: rgba(254, 202, 202, 0.7);
}

/* ========== 个人中心：账户信息美化 ========== */
.account-card .card-header {
    background: linear-gradient(135deg, rgba(22, 119, 255, 0.08) 0%, rgba(34, 197, 94, 0.06) 100%);
}

.account-info-table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
}

.account-info-table tbody tr {
    display: grid;
    grid-template-columns: 140px 1fr;
    align-items: center;
    gap: var(--spacing-md);
    padding: 14px 16px;
    border: 1px solid var(--border-light);
    border-radius: 14px;
    background: rgba(255, 255, 255, 0.72);
    box-shadow: 0 1px 0 rgba(17, 24, 39, 0.02);
}

.account-info-table tbody tr + tr {
    margin-top: 12px;
}

.account-info-table th {
    padding: 0;
    border: none;
    font-size: var(--font-size-sm);
    font-weight: 800;
    color: var(--text-primary);
    letter-spacing: 0.2px;
    text-align: left;
}

.account-info-table td {
    padding: 0;
    border: none;
    color: var(--text-regular);
    font-weight: 600;
    text-align: left;
    word-break: break-word;
}

.account-info-table td.is-empty {
    color: var(--text-secondary);
    font-weight: 600;
    opacity: 0.9;
}

@media (max-width: 520px) {
    .account-info-table tbody tr {
        grid-template-columns: 1fr;
        gap: 6px;
        padding: 12px 14px;
    }
    .account-info-table th {
        font-size: var(--font-size-xs);
        color: var(--text-secondary);
        font-weight: 800;
    }
}

/* ========== 激活码页面 Activation ========== */
.activation-page {
    padding: var(--spacing-xl) 0;
}

.activation-hero {
    border-radius: var(--radius-2xl);
    padding: var(--spacing-2xl);
    background: linear-gradient(135deg, #2E58EB 0%, #57AAF6 50%, #6B56EB 100%);
    color: #fff;
    box-shadow: 0 20px 40px rgba(46, 88, 235, 0.3);
    border: 1px solid rgba(255, 255, 255, 0.25);
    margin: var(--spacing-xl) 0;
    overflow: hidden;
    position: relative;
    text-align: center;
    backdrop-filter: blur(10px);
    transition: all 0.3s ease;
}

.activation-hero:hover {
    transform: translateY(-4px);
    box-shadow: 0 24px 48px rgba(46, 88, 235, 0.4);
}

.activation-hero::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle at 50% 50%, rgba(255,255,255,0.15) 0%, transparent 70%);
    animation: float 8s ease-in-out infinite;
    pointer-events: none;
}

.activation-hero::after {
    content: '';
    position: absolute;
    bottom: -20px;
    right: -20px;
    width: 200px;
    height: 200px;
    background: radial-gradient(circle, rgba(255,255,255,0.2) 0%, transparent 60%);
    border-radius: 50%;
    pointer-events: none;
}

.activation-hero h1 {
    margin: 0 0 20px 0;
    color: #fff;
    font-size: var(--font-size-3xl);
    font-weight: 900;
    position: relative;
    z-index: 1;
    text-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
}

.activation-hero p {
    margin: 0;
    opacity: 0.95;
    position: relative;
    z-index: 1;
    font-size: var(--font-size-lg);
    line-height: 1.6;
    max-width: 800px;
    margin: 0 auto;
    text-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

/* 装饰元素 */
.activation-hero .decorative-elements {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 0;
}

.activation-hero .decorative-elements::before {
    content: '';
    position: absolute;
    top: 20px;
    left: 20px;
    width: 100px;
    height: 100px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    filter: blur(20px);
}

.activation-hero .decorative-elements::after {
    content: '';
    position: absolute;
    bottom: 20px;
    left: 40px;
    width: 150px;
    height: 150px;
    background: rgba(255, 255, 255, 0.08);
    border-radius: 50%;
    filter: blur(30px);
}

.activation-grid {
    display: grid;
    grid-template-columns: 1fr 360px;
    gap: var(--spacing-xl);
    align-items: start;
}

.activation-card {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
}

.activation-card .card-header {
    background: rgba(255,255,255,0.55);
}

.activation-card .card-body {
    padding: var(--spacing-xl);
}

.activation-code-input {
    font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
    letter-spacing: 2px;
    text-transform: uppercase;
    font-size: 16px;
}

.activation-help {
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    margin-top: var(--spacing-sm);
}

.activation-side {
    position: sticky;
    top: 88px;
}

.activation-kv {
    display: grid;
    gap: 12px;
    margin-top: var(--spacing-md);
}

.activation-kv .item {
    display: flex;
    gap: 10px;
    align-items: flex-start;
    padding: 12px 12px;
    border-radius: 14px;
    background: rgba(255,255,255,0.75);
    border: 1px solid var(--border-light);
}

.activation-kv .item .t {
    font-weight: 800;
    color: var(--text-primary);
    line-height: 1.3;
}

.activation-kv .item .d {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    margin-top: 2px;
}

@media (max-width: 900px) {
    .activation-grid {
        grid-template-columns: 1fr;
    }
    .activation-side {
        position: static;
        order: 2;
    }
    .activation-card .card-body {
        padding: var(--spacing-lg);
    }
}

/* ========== 志愿分析 Volunteer ========== */
.volunteer-page {
    padding: var(--spacing-xl) 0;
    background-color: #ffffff;
}

.volunteer-hero {
    border-radius: var(--radius-2xl);
    padding: var(--spacing-2xl);
    background: linear-gradient(135deg, #2E58EB 0%, #57AAF6 50%, #6B56EB 100%);
    color: #fff;
    box-shadow: 0 20px 40px rgba(46, 88, 235, 0.3);
    border: 1px solid rgba(255, 255, 255, 0.25);
    margin: var(--spacing-xl) 0;
    overflow: hidden;
    position: relative;
    text-align: center;
    backdrop-filter: blur(10px);
    transition: all 0.3s ease;
}

.volunteer-hero:hover {
    transform: translateY(-4px);
    box-shadow: 0 24px 48px rgba(46, 88, 235, 0.4);
}

.volunteer-hero::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle at 50% 50%, rgba(255,255,255,0.15) 0%, transparent 70%);
    animation: float 8s ease-in-out infinite;
    pointer-events: none;
}

.volunteer-hero::after {
    content: '';
    position: absolute;
    bottom: -20px;
    right: -20px;
    width: 200px;
    height: 200px;
    background: radial-gradient(circle, rgba(255,255,255,0.2) 0%, transparent 60%);
    border-radius: 50%;
    pointer-events: none;
}

@keyframes float {
    0% { transform: translate(0, 0) rotate(0deg); }
    50% { transform: translate(10px, 10px) rotate(5deg); }
    100% { transform: translate(0, 0) rotate(0deg); }
}

.volunteer-hero h1 {
    margin: 0 0 20px 0;
    color: #fff;
    font-size: var(--font-size-3xl);
    font-weight: 900;
    position: relative;
    z-index: 1;
    text-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
}

.volunteer-hero p {
    margin: 0;
    opacity: 0.95;
    position: relative;
    z-index: 1;
    font-size: var(--font-size-lg);
    line-height: 1.6;
    max-width: 800px;
    margin: 0 auto;
    text-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

/* 装饰元素 */
.volunteer-hero .decorative-elements {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 0;
}

.volunteer-hero .decorative-elements::before {
    content: '';
    position: absolute;
    top: 20px;
    left: 20px;
    width: 100px;
    height: 100px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    filter: blur(20px);
}

.volunteer-hero .decorative-elements::after {
    content: '';
    position: absolute;
    bottom: 20px;
    left: 40px;
    width: 150px;
    height: 150px;
    background: rgba(255, 255, 255, 0.08);
    border-radius: 50%;
    filter: blur(30px);
}

.volunteer-card .card-body {
    padding: var(--spacing-xl);
}

.volunteer-form {
    max-width: 760px;
    margin: 0 auto;
}

.volunteer-form-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
}

.volunteer-form .form-group label {
    display: flex;
    align-items: center;
    gap: 10px;
}

.volunteer-form .form-group small {
    display: block;
    margin-top: 8px;
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
}

@media (max-width: 768px) {
    .volunteer-form-grid {
        grid-template-columns: 1fr;
    }
    .volunteer-card .card-body {
        padding: var(--spacing-lg);
    }
}

/* ========== 刷题练习 Practice ========== */
.category-card.selected {
    border-color: var(--primary-color) !important;
    box-shadow: var(--shadow-md);
    transform: translateY(-1px);
}

.option-item.selected,
.mode-item.selected {
    border-color: var(--primary-color) !important;
    background-color: var(--primary-light-1) !important;
    color: var(--text-primary) !important;
    box-shadow: var(--shadow-sm);
}

.mode-item.selected {
    box-shadow: var(--shadow-md);
}

/* 志愿分析：专业列表弹窗（原 volunteer.php 内联样式迁移） */
.modal-major-card {
    background: rgba(255,255,255,0.86);
    border-radius: 14px;
    padding: 18px;
    margin-bottom: 14px;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
}

.modal-major-card h3 {
    margin: 0 0 10px 0;
    font-size: 16px;
    color: var(--text-primary);
    font-weight: 800;
}

.modal-major-info {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    align-items: center;
}

.modal-major-tag {
    padding: 6px 10px;
    border-radius: 999px;
    font-size: 12px;
    font-weight: 700;
}

.modal-major-tag.score {
    background: linear-gradient(135deg, #dbeafe 0%, #93c5fd 100%);
    color: #1e3a8a;
}

.modal-major-tag.tuition {
    background: linear-gradient(135deg, #d1fae5 0%, #86efac 100%);
    color: #065f46;
}

.modal-major-tag.enrollment {
    background: linear-gradient(135deg, #fef3c7 0%, #fde68a 100%);
    color: #854d0e;
}

/* ========== 考试功能页 Exam Center ========== */
.exam-page {
    padding: var(--spacing-xl) 0;
    min-height: calc(100vh - 120px);
}

/* ========== 首页 Home ========== */
.home-page {
    padding: var(--spacing-2xl) 0;
}

.home-hero {
    border-radius: var(--radius-2xl);
    padding: var(--spacing-2xl);
    background: linear-gradient(135deg, #2E58EB 0%, #57AAF6 50%, #6B56EB 100%);
    color: #fff;
    box-shadow: 0 20px 40px rgba(46, 88, 235, 0.3);
    border: 1px solid rgba(255, 255, 255, 0.25);
    margin-top: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
    position: relative;
    overflow: hidden;
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: stretch;
    backdrop-filter: blur(10px);
    transition: all 0.3s ease;
}

.home-hero:hover {
    transform: translateY(-4px);
    box-shadow: 0 24px 48px rgba(46, 88, 235, 0.4);
}

.home-hero::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle at 50% 50%, rgba(255,255,255,0.15) 0%, transparent 70%);
    animation: float 8s ease-in-out infinite;
    pointer-events: none;
}

.home-hero::after {
    content: '';
    position: absolute;
    bottom: -20px;
    right: -20px;
    width: 200px;
    height: 200px;
    background: radial-gradient(circle, rgba(255,255,255,0.2) 0%, transparent 60%);
    border-radius: 50%;
    pointer-events: none;
}

.home-hero h1 {
    margin: 0 0 10px 0;
    font-size: var(--font-size-2xl);
    font-weight: 900;
    color: #fff;
    position: relative;
    z-index: 1;
    text-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

.home-hero p {
    margin: 0 0 var(--spacing-lg) 0;
    opacity: 0.95;
    position: relative;
    z-index: 1;
    text-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

/* 装饰元素 */
.home-hero .decorative-elements {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 0;
}

.home-hero .decorative-elements::before {
    content: '';
    position: absolute;
    top: 20px;
    left: 20px;
    width: 100px;
    height: 100px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    filter: blur(20px);
}

.home-hero .decorative-elements::after {
    content: '';
    position: absolute;
    bottom: 20px;
    left: 40px;
    width: 150px;
    height: 150px;
    background: rgba(255, 255, 255, 0.08);
    border-radius: 50%;
    filter: blur(30px);
}

.home-hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 6px;
}

.home-hero-main {
    max-width: 480px;
    position: relative;
    z-index: 1;
}

.home-hero-side {
    flex: 1;
    min-width: 260px;
    display: flex;
    align-items: center;
    justify-content: flex-end;
}

/* 首页 Hero 内按钮在渐变背景下的对比度优化 */
.home-hero .btn-outline {
    color: #ffffff;
    border-color: rgba(255, 255, 255, 0.65);
    background-color: rgba(255, 255, 255, 0.08);
}

.home-hero .btn-outline:hover:not(:disabled) {
    border-color: rgba(255, 255, 255, 0.95);
    background-color: rgba(255, 255, 255, 0.16);
    color: #ffffff;
}

.home-stats {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: var(--spacing-md);
}

.home-stat-card {
    background: rgba(255, 255, 255, 0.16);
    padding: var(--spacing-md);
    border-radius: 14px;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.25);
}

.home-stat-number {
    font-size: 24px;
    font-weight: 800;
    display: block;
}

.home-stat-label {
    font-size: var(--font-size-sm);
    opacity: 0.9;
    margin-top: 4px;
}

.home-sections {
    display: grid;
    grid-template-columns: 1.3fr 1fr;
    gap: var(--spacing-xl);
    margin-top: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.home-feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: var(--spacing-lg);
}

.home-feature-card {
    background: var(--bg-primary);
    border-radius: var(--radius-xl);
    border: 1px solid var(--border-color);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-card);
    transition: all var(--transition-base);
}

.home-feature-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-color);
}

.home-feature-card h3 {
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-xs);
}

.home-feature-card p {
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
}

.home-side-card {
    background: var(--bg-primary);
    border-radius: var(--radius-xl);
    border: 1px solid var(--border-color);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-card);
}

.home-side-card ul {
    list-style: none;
    padding: 0;
    margin: var(--spacing-md) 0 0;
}

.home-side-card li {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

@media (max-width: 900px) {
    .home-sections {
        grid-template-columns: 1fr;
    }
    .home-hero {
        flex-direction: column;
    }
    .home-hero-side {
        justify-content: flex-start;
        margin-top: var(--spacing-lg);
    }
    .home-stats {
        grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    }
}

.exam-hero {
    border-radius: var(--radius-2xl);
    padding: var(--spacing-xl);
    background: var(--gradient-primary);
    color: #fff;
    box-shadow: var(--shadow-xl);
    border: 1px solid rgba(255, 255, 255, 0.18);
    margin-bottom: var(--spacing-xl);
    text-align: center;
}

.exam-hero .welcome-text {
    font-size: 18px;
    margin-bottom: 10px;
    opacity: 0.9;
}

.exam-hero .user-name {
    font-size: 28px;
    font-weight: 800;
    margin-bottom: 10px;
    color: #ffffff;
}

.exam-hero p {
    margin: 0;
}

.exam-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
    margin-top: var(--spacing-lg);
}

.exam-stat-card {
    background: rgba(255, 255, 255, 0.15);
    padding: var(--spacing-md);
    border-radius: 12px;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    transition: all var(--transition-base);
}

.exam-stat-card:hover {
    transform: translateY(-4px);
    background: rgba(255, 255, 255, 0.22);
}

.exam-stat-number {
    font-size: 22px;
    font-weight: 800;
    display: block;
}

.exam-stat-label {
    font-size: var(--font-size-sm);
    opacity: 0.9;
    margin-top: 4px;
}

.exam-permission,
.exam-feature-section,
.exam-recent-section {
    background: var(--bg-primary);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-card);
    border: 1px solid var(--border-color);
    margin-bottom: var(--spacing-xl);
}

.exam-section-title {
    font-size: var(--font-size-lg);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-lg);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.exam-permission-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 0;
    border-bottom: 1px solid var(--border-light);
}

.exam-permission-item:last-child {
    border-bottom: none;
}

.exam-permission-label {
    color: var(--text-regular);
    font-size: var(--font-size-md);
}

.exam-permission-value {
    font-weight: 600;
    font-size: var(--font-size-md);
}

.exam-permission-value.success {
    color: var(--success-color);
}

.exam-permission-value.warning {
    color: var(--warning-color);
}

.exam-features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-md);
}

.exam-feature-card {
    background: var(--bg-primary);
    border: 2px solid #e8f4ff;
    border-radius: 14px;
    padding: 26px 18px;
    text-align: center;
    transition: all var(--transition-base);
    text-decoration: none;
    color: inherit;
    position: relative;
    overflow: hidden;
}

.exam-feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--primary-color);
    transform: scaleX(0);
    transition: transform var(--transition-base);
}

.exam-feature-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-color);
}

.exam-feature-card:hover::before {
    transform: scaleX(1);
}

.exam-feature-icon {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 12px;
    font-size: 28px;
    color: #fff;
}

.exam-feature-icon.book {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-hover));
}

.exam-feature-icon.exam {
    background: linear-gradient(135deg, #22c55e, #16a34a);
}

.exam-feature-icon.wrong {
    background: linear-gradient(135deg, #f59e0b, #d97706);
}

.exam-feature-icon.key {
    background: linear-gradient(135deg, #8b5cf6, #6d28d9);
}

.exam-feature-title {
    font-size: var(--font-size-md);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.exam-feature-desc {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

.exam-list {
    margin-top: var(--spacing-md);
}

.exam-item-card {
    background: var(--bg-tertiary);
    border-radius: var(--radius-md);
    border: 1px solid #e5f0ff;
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-md);
    transition: all var(--transition-base);
}

.exam-item-card:hover {
    background: #f0f7ff;
    border-color: #91d5ff;
}

.exam-item-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 8px;
}

.exam-item-title {
    font-size: var(--font-size-md);
    font-weight: 600;
    color: var(--text-primary);
}

.exam-status-badge {
    padding: 4px 10px;
    border-radius: 999px;
    font-size: 12px;
    font-weight: 600;
}

.exam-status-badge.completed {
    background: #f6ffed;
    color: var(--success-color);
}

.exam-status-badge.ongoing {
    background: #fff7e6;
    color: var(--warning-color);
}

.exam-status-badge.timeout {
    background: #fff1f0;
    color: var(--error-color);
}

.exam-item-meta {
    display: flex;
    gap: var(--spacing-lg);
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
}

.exam-item-action {
    margin-top: var(--spacing-sm);
    text-align: right;
}

.exam-item-action .btn {
    font-size: var(--font-size-sm);
}

.exam-empty {
    text-align: center;
    padding: 40px 20px 32px;
    color: var(--text-secondary);
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    border: 1px dashed #bfdbfe;
    box-shadow: var(--shadow-sm);
}

.exam-empty h6 {
    font-size: var(--font-size-md);
    margin-bottom: 6px;
    color: var(--text-primary);
    font-weight: 700;
}

.exam-empty-icon {
    font-size: 40px;
    margin-bottom: 10px;
}

.exam-empty p {
    margin-bottom: 16px;
}

@media (max-width: 768px) {
    .exam-stats {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
    .exam-permission,
    .exam-feature-section,
    .exam-recent-section {
        padding: var(--spacing-lg);
    }
    .exam-item-meta {
        flex-direction: column;
        gap: 6px;
    }
}

/* ========== 功能卡片网格 ========== */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-xl);
    margin: var(--spacing-2xl) 0;
}

.feature-card {
    background-color: var(--bg-primary);
    padding: var(--spacing-xl);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-card);
    border: 1px solid var(--border-color);
    transition: all var(--transition-base);
    text-align: center;
    cursor: pointer;
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-color);
}

.feature-icon {
    font-size: 48px;
    margin-bottom: var(--spacing-lg);
    color: var(--primary-color);
}

.feature-card h3 {
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
}

.feature-card p {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
    line-height: var(--line-height-lg);
}

/* ========== 横幅区域 ========== */
.hero {
    background: var(--gradient-primary);
    color: var(--bg-primary);
    padding: var(--spacing-2xl) var(--spacing-lg);
    text-align: center;
    margin-bottom: 0;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1440 320"><path fill="rgba(255,255,255,0.1)" d="M0,192L48,186.7C96,181,192,171,288,170.7C384,171,480,181,576,202.7C672,224,768,256,864,250.7C960,245,1056,203,1152,186.7C1248,171,1344,181,1392,186.7L1440,192L1440,320L1392,320C1344,320,1248,320,1152,320C1056,320,960,320,864,320C768,320,672,320,576,320C480,320,384,320,288,320C192,320,96,320,48,320L0,320Z"></path></svg>') no-repeat bottom;
    background-size: cover;
    opacity: 0.5;
}

.hero > * {
    position: relative;
    z-index: 1;
}

.hero h1 {
    font-size: var(--font-size-3xl);
    margin-bottom: var(--spacing-lg);
    font-weight: 700;
    line-height: 1.2;
}

.hero p {
    font-size: var(--font-size-lg);
    opacity: 0.95;
    max-width: 800px;
    margin: 0 auto var(--spacing-xl);
    line-height: var(--line-height-lg);
}

/* hero 内按钮与链接更统一 */
.hero .btn {
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.18);
}

.hero .btn-outline {
    color: #fff;
    border-color: rgba(255,255,255,0.5);
    background-color: rgba(255,255,255,0.06);
}

.hero .btn-outline:hover:not(:disabled) {
    background-color: rgba(255,255,255,0.12);
    border-color: rgba(255,255,255,0.85);
}

/* ========== 徽章组件 ========== */
.badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 2px 8px;
    font-size: var(--font-size-xs);
    font-weight: 500;
    border-radius: 10px;
    line-height: 1.5;
}

.badge-primary {
    background-color: var(--primary-light-1);
    color: var(--primary-color);
}

.badge-success {
    background-color: #f6ffed;
    color: var(--success-color);
}

.badge-warning {
    background-color: #fffbe6;
    color: var(--warning-color);
}

.badge-error {
    background-color: #fff2f0;
    color: var(--error-color);
}

.badge-info {
    background-color: #e6f4ff;
    color: var(--info-color);
}

/* ========== 提示信息 ========== */
.alert {
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-lg);
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
    border: 1px solid transparent;
}

.alert-success {
    background-color: #f6ffed;
    border-color: #b7eb8f;
    color: var(--success-color);
}

.alert-warning {
    background-color: #fffbe6;
    border-color: #ffe58f;
    color: var(--warning-color);
}

.alert-error {
    background-color: #fff2f0;
    border-color: #ffccc7;
    color: var(--error-color);
}

.alert-info {
    background-color: #e6f4ff;
    border-color: #91d5ff;
    color: var(--info-color);
}

.alert-title {
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
}

/* ========== 分页组件 ========== */
.pagination {
    display: flex;
    justify-content: center;
    gap: var(--spacing-xs);
    margin: var(--spacing-xl) 0;
    flex-wrap: wrap;
}

.pagination a {
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    text-decoration: none;
    color: var(--text-regular);
    transition: all var(--transition-base);
    font-size: var(--font-size-sm);
    font-weight: 500;
    background-color: var(--bg-primary);
}

.pagination a:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
    background-color: var(--primary-light-1);
}

.pagination a.current {
    background-color: var(--primary-color);
    color: var(--bg-primary);
    border-color: var(--primary-color);
}

/* ========== 底部Tab栏 ========== */
.tab-bar {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(135deg, var(--bg-primary) 0%, rgba(249, 250, 251, 1) 100%);
    border-top: 1px solid var(--border-color);
    box-shadow: 0 -4px 20px rgba(46, 88, 235, 0.15);
    display: flex;
    justify-content: space-around;
    align-items: center;
    padding: var(--spacing-xs) var(--spacing-md);
    z-index: 1000;
    height: 72px;
    border-radius: 24px 24px 0 0;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.tab-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    flex: 1;
    text-decoration: none;
    color: var(--text-secondary);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    padding: var(--spacing-sm) var(--spacing-md);
    min-width: 70px;
    border-radius: 16px;
    margin: 0 var(--spacing-xs);
}

.tab-item:hover {
    color: var(--primary-color);
    background-color: rgba(46, 88, 235, 0.08);
    transform: translateY(-1px);
}

.tab-item.active {
    color: var(--primary-color);
    background: linear-gradient(135deg, rgba(46, 88, 235, 0.15) 0%, rgba(87, 170, 246, 0.1) 100%);
    border-radius: 18px;
    margin: 0 var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-md);
    box-shadow: 0 4px 16px rgba(46, 88, 235, 0.25);
    transform: translateY(-2px);
    border: 1px solid rgba(46, 88, 235, 0.2);
}

.tab-icon {
    font-size: 26px;
    margin-bottom: var(--spacing-xs);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: 50%;
}

.tab-item.active .tab-icon {
    font-size: 30px;
    transform: translateY(-3px);
    background: var(--gradient-primary);
    color: white;
    box-shadow: 0 4px 12px rgba(46, 88, 235, 0.4);
}

.tab-label {
    font-size: var(--font-size-xs);
    font-weight: 500;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    text-align: center;
}

.tab-item.active .tab-label {
    font-weight: 700;
    font-size: 13px;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* 响应式设计 */
@media (max-width: 480px) {
    .tab-bar {
        height: 64px;
        padding: var(--spacing-xs) var(--spacing-sm);
    }
    
    .tab-item {
        min-width: 60px;
        padding: var(--spacing-xs) var(--spacing-sm);
    }
    
    .tab-icon {
        font-size: 24px;
        width: 32px;
        height: 32px;
    }
    
    .tab-item.active .tab-icon {
        font-size: 28px;
    }
    
    .tab-label {
        font-size: 11px;
    }
    
    .tab-item.active .tab-label {
        font-size: 12px;
    }
}

/* ========== 页脚 ========== */
.footer {
    background: linear-gradient(135deg, var(--dark-color) 0%, var(--dark-color-2) 100%);
    color: rgba(255, 255, 255, 0.92);
    text-align: center;
    padding: var(--spacing-xl) var(--spacing-lg);
    margin-top: auto;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.footer p {
    margin: var(--spacing-xs) 0;
    opacity: 0.9;
}

.footer a {
    color: rgba(255, 255, 255, 0.92);
    text-decoration: underline;
    text-decoration-color: rgba(255, 255, 255, 0.35);
}

.footer a:hover {
    color: #fff;
    text-decoration-color: rgba(255, 255, 255, 0.7);
}

/* ========== 模态框（志愿分析页面使用） ========== */
.modal {
    position: fixed;
    inset: 0;
    display: none;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-xl);
    background: rgba(15, 23, 42, 0.55);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    z-index: 2000;
}

.modal.show {
    display: flex;
}

.modal-content {
    width: min(920px, 100%);
    max-height: 85vh;
    overflow: auto;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 18px 20px;
    border-bottom: 1px solid rgba(17, 24, 39, 0.08);
    background: rgba(255,255,255,0.55);
}

.modal-header h2 {
    margin: 0;
    font-size: var(--font-size-xl);
    font-weight: 700;
}

.modal-close {
    width: 40px;
    height: 40px;
    border-radius: 10px;
    border: 1px solid rgba(17, 24, 39, 0.10);
    background: rgba(255,255,255,0.6);
    cursor: pointer;
    font-size: 22px;
    line-height: 1;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-base);
}

.modal-close:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.modal-body {
    padding: 18px 20px 22px;
}

/* ========== 更细腻的卡片 hover（志愿结果卡/课程卡通用） ========== */
.feature-card:hover,
.result-card:hover,
.content-card:hover {
    transform: translateY(-2px);
}

/* ========== 小屏模态框优化 ========== */
@media (max-width: 768px) {
    .modal {
        padding: var(--spacing-md);
        align-items: flex-start;
        padding-top: calc(var(--spacing-xl));
    }

    .modal-content {
        max-height: 90vh;
        border-radius: 14px;
    }
}

/* ========== 登录 / 注册（Auth Pages） ========== */
.auth-page {
    min-height: 100vh;
    display: grid;
    grid-template-columns: 1.15fr 0.85fr;
    gap: var(--spacing-2xl);
    align-items: stretch;
    padding: clamp(18px, 3vw, 36px);
}

.auth-brand {
    border-radius: var(--radius-2xl);
    padding: clamp(22px, 3vw, 42px);
    background:
        radial-gradient(900px 500px at 15% 10%, rgba(255,255,255,0.25), transparent 55%),
        radial-gradient(700px 420px at 80% 40%, rgba(255,255,255,0.20), transparent 55%),
        var(--gradient-primary);
    color: #fff;
    box-shadow: var(--shadow-xl);
    position: relative;
    overflow: hidden;
}

.auth-brand::after {
    content: '';
    position: absolute;
    inset: -2px;
    background: radial-gradient(600px 220px at 30% 10%, rgba(255,255,255,0.25), transparent 60%);
    pointer-events: none;
}

.auth-brand-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-lg);
    position: relative;
    z-index: 1;
}

.auth-logo {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-size: 18px;
    font-weight: 800;
    letter-spacing: 0.2px;
}

.auth-brand a {
    color: rgba(255,255,255,0.92);
    text-decoration: none;
    font-weight: 600;
    padding: 8px 12px;
    border-radius: 10px;
    border: 1px solid rgba(255,255,255,0.25);
    background: rgba(255,255,255,0.08);
    transition: all var(--transition-base);
}

.auth-brand a:hover {
    background: rgba(255,255,255,0.14);
    border-color: rgba(255,255,255,0.45);
}

.auth-hero {
    margin-top: clamp(26px, 4vw, 60px);
    position: relative;
    z-index: 1;
}

.auth-hero h1 {
    margin: 0 0 10px 0;
    font-size: clamp(26px, 3.2vw, 40px);
    font-weight: 900;
    color: #fff;
    letter-spacing: -0.4px;
}

.auth-hero p {
    margin: 0 0 var(--spacing-xl) 0;
    opacity: 0.92;
    font-size: 16px;
    max-width: 520px;
}

.auth-features {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-xl);
}

.auth-feature {
    background: rgba(255,255,255,0.10);
    border: 1px solid rgba(255,255,255,0.18);
    border-radius: 14px;
    padding: 14px 14px;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.auth-feature .t {
    font-weight: 800;
    margin-bottom: 4px;
}

.auth-feature .d {
    opacity: 0.9;
    font-size: 13px;
}

.auth-panel {
    display: flex;
    align-items: center;
    justify-content: center;
}

.auth-card {
    width: min(440px, 100%);
    border-radius: var(--radius-xl);
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    box-shadow: var(--shadow-xl);
    overflow: hidden;
}

.auth-card-header {
    padding: 22px 22px 16px;
    border-bottom: 1px solid rgba(17, 24, 39, 0.08);
    background: rgba(255,255,255,0.55);
}

.auth-card-header h2 {
    margin: 0;
    font-size: 20px;
    font-weight: 900;
}

.auth-card-header p {
    margin: 8px 0 0 0;
    color: var(--text-secondary);
    font-size: 13px;
}

.auth-card-body {
    padding: 18px 22px 22px;
}

.input-group {
    margin-bottom: var(--spacing-lg);
}

.input-group label {
    display: block;
    font-weight: 700;
    color: var(--text-primary);
    font-size: 13px;
    margin-bottom: 8px;
}

.input-group input,
.input-group select,
.input-group textarea {
    width: 100%;
}

.auth-actions {
    display: grid;
    gap: 12px;
    margin-top: 16px;
}

.auth-hint {
    margin-top: 14px;
    font-size: 13px;
    color: var(--text-secondary);
    text-align: center;
}

.auth-hint a {
    font-weight: 700;
}

@media (max-width: 980px) {
    .auth-page {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
    .auth-features {
        grid-template-columns: 1fr;
    }
}

/* ========== 个人中心 Dashboard ========== */
.dashboard-layout {
    display: grid;
    grid-template-columns: 260px minmax(0, 1fr);
    gap: var(--spacing-xl);
    margin: var(--spacing-xl) 0;
}

.dashboard-sidebar {
    background-color: var(--bg-primary);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-card);
    border: 1px solid var(--border-color);
    padding: var(--spacing-lg);
    position: sticky;
    top: 88px;
    height: fit-content;
}

.dashboard-sidebar ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.sidebar-link {
    display: block;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    color: var(--text-regular);
    text-decoration: none;
    font-size: var(--font-size-sm);
    transition: all var(--transition-base);
}

.sidebar-link:hover {
    background-color: var(--bg-tertiary);
    color: var(--primary-color);
    transform: translateX(2px);
}

.sidebar-link.active {
    color: var(--primary-color);
    background-color: var(--primary-light-1);
    font-weight: 600;
}

.dashboard-main > .card:first-child .card-body {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-hover) 55%, #22c55e 120%);
    color: #fff;
}

.dashboard-main > .card:first-child h1 {
    color: #fff;
}

.dashboard-main > .card:first-child p {
    color: rgba(255,255,255,0.9);
}

@media (max-width: 900px) {
    .dashboard-layout {
        grid-template-columns: 1fr;
    }

    .dashboard-sidebar {
        position: static;
        order: 2;
    }
}

/* ========== 工具类 ========== */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.text-primary { color: var(--text-primary); }
.text-regular { color: var(--text-regular); }
.text-secondary { color: var(--text-secondary); }
.text-muted { color: var(--text-placeholder); }

.fw-bold { font-weight: 700; }
.fw-semibold { font-weight: 600; }
.fw-medium { font-weight: 500; }

.mt-10 { margin-top: 10px; }
.mt-20 { margin-top: 20px; }
.mt-30 { margin-top: 30px; }
.mb-10 { margin-bottom: 10px; }
.mb-20 { margin-bottom: 20px; }
.mb-30 { margin-bottom: 30px; }

.d-flex { display: flex; }
.d-grid { display: grid; }
.d-none { display: none; }

.justify-between { justify-content: space-between; }
.justify-center { justify-content: center; }
.justify-start { justify-content: flex-start; }
.justify-end { justify-content: flex-end; }

.align-center { align-items: center; }
.align-start { align-items: flex-start; }
.align-end { align-items: flex-end; }

.gap-10 { gap: 10px; }
.gap-20 { gap: 20px; }
.gap-30 { gap: 30px; }

/* ========== 响应式设计 ========== */
@media (max-width: 1024px) {
    .container {
        max-width: 960px;
    }
    
    .features-grid {
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
        gap: var(--spacing-lg);
    }
}

@media (max-width: 768px) {
    /* 基础样式调整 */
    :root {
        --font-size-3xl: 28px;
        --font-size-2xl: 22px;
        --font-size-xl: 18px;
        --font-size-lg: 16px;
        --font-size-md: 14px;
        --font-size-sm: 13px;
        --font-size-xs: 12px;
    }
    
    body {
        font-size: var(--font-size-md);
    }
    
    /* 容器调整 */
    .container {
        padding: 0 var(--spacing-md);
    }
    
    /* 头部导航 */
    .nav-menu {
        display: none;
        position: absolute;
        top: 64px;
        left: 0;
        right: 0;
        background-color: var(--bg-primary);
        flex-direction: column;
        align-items: flex-start;
        padding: var(--spacing-md);
        gap: var(--spacing-sm);
        box-shadow: var(--shadow-md);
        border-top: 1px solid var(--border-color);
    }
    
    .nav-menu.active {
        display: flex;
    }
    
    .nav-menu li {
        width: 100%;
    }
    
    .nav-menu a {
        width: 100%;
        padding: var(--spacing-sm);
    }
    
    .mobile-menu-toggle {
        display: block;
    }
    
    .user-menu a:not(.btn) {
        display: none;
    }
    
    /* 横幅区域 */
    .hero {
        padding: var(--spacing-xl) var(--spacing-md);
    }
    
    .hero h1 {
        font-size: var(--font-size-2xl);
    }
    
    .hero p {
        font-size: var(--font-size-md);
    }
    
    /* 功能卡片网格 */
    .features-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
        margin: var(--spacing-xl) 0;
    }
    
    /* 内容卡片 */
    .content-card {
        padding: var(--spacing-lg);
        margin-bottom: var(--spacing-lg);
    }
    
    /* 表单容器 */
    .form-container {
        padding: var(--spacing-lg);
        margin: var(--spacing-xl) var(--spacing-md);
    }
    
    /* 用户中心 */
    .user-dashboard {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
    
    .sidebar-menu {
        position: static;
        order: 2;
    }
    
    /* 统计卡片 */
    .user-stats {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-md);
    }
    
    .stat-box {
        padding: var(--spacing-lg);
    }
    
    .stat-box .number {
        font-size: 28px;
    }
    
    /* 底部Tab栏优化 */
    .tab-bar {
        padding: var(--spacing-xs) 0;
        height: 56px;
    }
    
    .tab-icon {
        font-size: 20px;
    }
    
    .tab-label {
        font-size: 11px;
    }
    
    /* 容器间距优化 */
    .container-with-tab {
        padding-bottom: 70px;
    }
}

@media (max-width: 480px) {
    /* 统计卡片 */
    .user-stats {
        grid-template-columns: 1fr;
    }
    
    /* 按钮尺寸 */
    .btn {
        padding: var(--spacing-xs) var(--spacing-md);
        font-size: var(--font-size-xs);
    }
    
    /* 卡片内边距 */
    .card-body,
    .card-header,
    .card-footer {
        padding: var(--spacing-md);
    }
    
    /* 内容卡片 */
    .content-card {
        padding: var(--spacing-md);
    }
}

/* ========== 动画效果 ========== */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.5;
    }
}

.fade-in {
    animation: fadeIn var(--transition-base);
}

/* ========== 打印样式 ========== */
@media print {
    .header,
    .nav-menu,
    .user-menu,
    .btn,
    .footer,
    .mobile-menu-toggle,
    .tab-bar {
        display: none !important;
    }
    
    body {
        background: white;
        color: black;
    }
    
    .container {
        max-width: 100%;
        padding: 0;
    }
    
    .card,
    .content-card {
        box-shadow: none;
        border: 1px solid #ddd;
    }
}

/* ========== 无障碍设计 ========== */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* 焦点样式 */
:focus-visible {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
    border-radius: var(--radius-sm);
}