* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: "Microsoft YaHei", Arial, sans-serif;
    background: #f5f0e6;
    min-height: 100vh;
}

.top-header {
    background: #f5f0e6;
    padding: 20px 40px;
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    color: #333;
    font-size: 20px;
    font-weight: bold;
}

.search-box {
    display: flex;
    gap: 5px;
}

.search-box input {
    padding: 8px 12px;
    border: 2px solid #ccc;
    font-size: 14px;
}

.search-box button {
    padding: 8px 20px;
    background: #8b0000;
    color: white;
    border: none;
    cursor: pointer;
    font-size: 14px;
}

.nav-bar {
    background: #8b0000;
    padding: 0;
}

.nav-bar-inner {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: center;
    gap: 50px;
}

.nav-item {
    padding: 12px 25px;
    color: white;
    text-decoration: none;
    font-size: 16px;
    cursor: pointer;
    transition: background 0.3s;
}

.nav-item:hover, .nav-item.active {
    background: #660000;
}

.banner {
    position: relative;
    max-width: 1200px;
    margin: 0 auto;
    height: 400px;
    overflow: hidden;
}

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

.banner-text {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
}

.main-content {
    max-width: 1200px;
    margin: 20px auto;
    padding: 0 20px;
}

.section-title {
    text-align: center;
    color: #8b0000;
    font-size: 28px;
    font-weight: bold;
    margin: 40px 0 30px;
}

.cards-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.feature-card {
    background: white;
    border: 1px solid #ddd;
    overflow: hidden;
}

.card-img {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

.card-title {
    text-align: center;
    font-size: 18px;
    font-weight: bold;
    padding: 15px;
    color: #8b0000;
}

.card-content {
    padding: 0 20px 20px;
    font-size: 14px;
    line-height: 1.8;
    color: #333;
}

.page {
    display: none;
}

.page.active {
    display: block;
}

.thermometer-page {
    background: white;
    padding: 30px;
}

.today-card {
    background: linear-gradient(135deg, #ff4500 0%, #ff6b35 100%);
    color: white;
    padding: 30px;
    text-align: center;
    margin-bottom: 30px;
}

.today-card h3 {
    font-size: 18px;
    margin-bottom: 15px;
    opacity: 0.9;
}

.sentiment-value {
    font-size: 56px;
    font-weight: bold;
    margin: 10px 0;
}

.sentiment-label {
    display: inline-block;
    padding: 8px 20px;
    background: rgba(255, 255, 255, 0.2);
    font-size: 16px;
}

.quick-start {
    text-align: center;
    margin: 20px 0;
    padding: 20px;
    background: #fff3e0;
    border: 2px dashed #ff9800;
}

.quick-start p {
    color: #666;
    margin-bottom: 15px;
}

.controls {
    margin: 20px 0;
    text-align: center;
    padding: 15px;
    background: #f8f9fa;
}

label {
    font-weight: bold;
    margin-right: 10px;
    color: #555;
}

input[type="date"] {
    padding: 8px 12px;
    margin-right: 20px;
    border: 1px solid #ddd;
}

.btn-primary {
    padding: 10px 25px;
    background: #ff4500;
    color: white;
    border: none;
    cursor: pointer;
    font-size: 16px;
}

.btn-primary:hover {
    background: #e03e00;
}

.loading {
    text-align: center;
    color: #666;
    font-size: 18px;
    margin: 20px 0;
    display: none;
}

.result-area {
    margin-top: 20px;
    display: none;
}

h2 {
    color: #555;
    font-size: 20px;
    margin: 25px 0 15px;
}

table {
    width: 100%;
    border-collapse: collapse;
    margin: 15px 0;
    background: white;
    font-size: 14px;
}

th, td {
    border: 1px solid #ddd;
    padding: 12px;
    text-align: center;
}

th {
    background-color: #ff4500;
    color: white;
}

tr:nth-child(even) {
    background-color: #f9f9f9;
}

#chart-container {
    height: 400px;
    margin-top: 30px;
}

.test-page {
    background: white;
    padding: 30px;
}

.progress-bar {
    background: #e0e0e0;
    height: 8px;
    margin-bottom: 30px;
    overflow: hidden;
}

.progress-fill {
    background: #ff4500;
    height: 100%;
    width: 0%;
    transition: width 0.3s;
}

.question-card {
    background: #f8f9fa;
    padding: 30px;
    margin-bottom: 20px;
    display: none;
}

.question-card.active {
    display: block;
}

.question-num {
    color: #ff4500;
    font-size: 14px;
    font-weight: bold;
    margin-bottom: 10px;
}

.question-title {
    font-size: 18px;
    color: #333;
    margin-bottom: 25px;
    font-weight: 500;
}

.options {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.option {
    padding: 16px 20px;
    background: white;
    border: 2px solid #e0e0e0;
    cursor: pointer;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    gap: 12px;
}

.option:hover {
    border-color: #ff4500;
    background: #fff5f2;
}

.option.selected {
    border-color: #ff4500;
    background: #ffede8;
}

.option-radio {
    width: 20px;
    height: 20px;
    border: 2px solid #ccc;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.option.selected .option-radio {
    border-color: #ff4500;
    background: #ff4500;
}

.option.selected .option-radio::after {
    content: '✓';
    color: white;
    font-size: 12px;
}

.btn-group {
    display: flex;
    gap: 15px;
    margin-top: 30px;
    justify-content: center;
}

.btn-secondary {
    padding: 12px 30px;
    background: #e0e0e0;
    color: #666;
    border: none;
    cursor: pointer;
    font-size: 15px;
}

.btn-secondary:hover {
    background: #d0d0d0;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.result-card {
    background: white;
    padding: 40px;
    text-align: center;
    display: none;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.result-icon {
    width: 100px;
    height: 100px;
    margin: 0 auto 25px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 50px;
}

.result-type {
    font-size: 24px;
    margin-bottom: 15px;
    font-weight: bold;
}

.result-desc {
    color: #666;
    margin-bottom: 30px;
    line-height: 1.8;
}

.type-conservative .result-icon {
    background: #e3f2fd;
}

.type-conservative .result-type {
    color: #1976d2;
}

.type-moderate .result-icon {
    background: #fff3e0;
}

.type-moderate .result-type {
    color: #f57c00;
}

.type-aggressive .result-icon {
    background: #ffebee;
}

.type-aggressive .result-type {
    color: #c62828;
}

.suggestions {
    background: #f8f9fa;
    padding: 25px;
    text-align: left;
    margin-top: 25px;
}

.suggestions h3 {
    color: #333;
    margin-bottom: 15px;
    font-size: 16px;
}

.suggestions ul {
    color: #555;
    padding-left: 20px;
}

.suggestions li {
    margin-bottom: 10px;
}

.edu-page {
    background: white;
    padding: 30px;
}

.warning-banner {
    background: linear-gradient(90deg, #ff6b6b 0%, #ee5a6f 100%);
    color: white;
    padding: 20px;
    margin-bottom: 25px;
    display: flex;
    align-items: center;
    gap: 15px;
}

.warning-icon {
    font-size: 40px;
}

.warning-text h3 {
    margin-bottom: 5px;
}

.warning-text p {
    font-size: 14px;
    opacity: 0.9;
}

.course-grid {
    display: grid;
    gap: 20px;
}

.course-card {
    background: white;
    overflow: hidden;
    border: 1px solid #eee;
}

.course-header {
    padding: 20px;
    display: flex;
    align-items: center;
    gap: 15px;
    cursor: pointer;
    transition: all 0.2s;
    user-select: none;
}

.course-header:hover {
    background: #f8f9fa;
}

.course-icon {
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    flex-shrink: 0;
}

.course-title-wrap {
    flex: 1;
}

.course-title {
    font-size: 17px;
    color: #333;
    font-weight: 500;
}

.course-meta {
    font-size: 13px;
    color: #999;
    margin-top: 4px;
}

.expand-icon {
    font-size: 20px;
    color: #999;
    transition: transform 0.3s;
}

.course-header.expanded .expand-icon {
    transform: rotate(180deg);
}

.tag {
    display: inline-block;
    padding: 3px 10px;
    font-size: 12px;
    margin-left: 8px;
}

.tag-hot {
    background: #ffebee;
    color: #c62828;
}

.tag-new {
    background: #e8f5e9;
    color: #2e7d32;
}

.tag-base {
    background: #e3f2fd;
    color: #1565c0;
}

.course-content {
    padding: 0 20px 20px;
    display: none;
    animation: slideDown 0.3s ease;
}

.course-content.active {
    display: block;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.lesson-list {
    border-top: 1px solid #eee;
    padding-top: 15px;
}

.lesson-item {
    padding: 12px;
    margin-bottom: 8px;
    display: flex;
    align-items: center;
    gap: 10px;
    cursor: pointer;
    transition: all 0.2s;
    background: white;
    text-decoration: none;
    color: inherit;
    border: 1px solid transparent;
}

.lesson-item:hover {
    background: #f5f5f5;
    border-color: #ff4500;
}

.lesson-num {
    width: 24px;
    height: 24px;
    background: #e0e0e0;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    color: #666;
    flex-shrink: 0;
}

.lesson-item:hover .lesson-num {
    background: #ff4500;
    color: white;
}

.lesson-title {
    flex: 1;
    font-size: 14px;
}

.source-tag {
    font-size: 11px;
    padding: 2px 8px;
    white-space: nowrap;
}

.source-gov {
    background: #e8f5e9;
    color: #2e7d32;
}

.source-news {
    background: #e3f2fd;
    color: #1565c0;
}

.source-cctv {
    background: #ffebee;
    color: #c62828;
}

.insight-box {
    background: #e3f2fd;
    border-left: 4px solid #2196f3;
    padding: 12px 15px;
    margin: 15px 0;
    font-size: 13px;
    color: #555;
}

.insight-box strong {
    color: #1976d2;
}

.disclaimer {
    margin-top: 30px;
    padding: 20px;
    background: #fff8e1;
    font-size: 13px;
    color: #666;
    border-left: 4px solid #ffc107;
    line-height: 1.6;
}

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

@media (max-width: 600px) {
    .nav-bar-inner {
        flex-wrap: wrap;
        gap: 10px;
    }
}