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

:root {
    /* 主色调 - 温暖专业的心理健康色系 */
    --primary-color: #4A90A4;
    --primary-dark: #3A7A8C;
    --primary-light: #6BA5B7;
    
    /* 辅助色 */
    --secondary-color: #7B68EE;
    --accent-color: #FF6B6B;
    
    /* 状态色 */
    --success-color: #4CAF50;
    --warning-color: #FF9800;
    --danger-color: #F44336;
    --info-color: #2196F3;
    
    /* 中性色 */
    --text-primary: #2C3E50;
    --text-secondary: #5D6D7E;
    --text-light: #95A5A6;
    --bg-light: #F8F9FA;
    --bg-white: #FFFFFF;
    --border-color: #E5E8E8;
    
    /* 渐变 */
    --gradient-primary: linear-gradient(135deg, #4A90A4 0%, #7B68EE 100%);
    --gradient-hero: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    
    /* 阴影 */
    --shadow-sm: 0 2px 4px rgba(0,0,0,0.05);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.08);
    --shadow-lg: 0 8px 24px rgba(0,0,0,0.12);
    --shadow-xl: 0 16px 48px rgba(0,0,0,0.15);
    
    /* 圆角 */
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 28px;
    
    /* 过渡 */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    color: var(--text-primary);
    line-height: 1.6;
    background-color: var(--bg-white);
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* 导航栏 */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
    transition: var(--transition-normal);
}

.navbar .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 12px;
}

.nav-brand .logo {
    font-size: 28px;
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-brand .tagline {
    font-size: 14px;
    color: var(--text-secondary);
    padding-left: 12px;
    border-left: 2px solid var(--border-color);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 32px;
}

.nav-menu a {
    text-decoration: none;
    color: var(--text-secondary);
    font-size: 15px;
    font-weight: 500;
    transition: var(--transition-fast);
    position: relative;
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: var(--transition-fast);
}

.nav-menu a:hover,
.nav-menu a.active {
    color: var(--primary-color);
}

.nav-menu a:hover::after,
.nav-menu a.active::after {
    width: 100%;
}

.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
}

.hamburger span {
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    transition: var(--transition-fast);
}

/* Hero区域 */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    padding-top: 72px;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--gradient-hero);
    opacity: 0.08;
}

.hero-bg::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 800px;
    height: 800px;
    background: radial-gradient(circle, var(--primary-light) 0%, transparent 70%);
    opacity: 0.3;
    animation: float 8s ease-in-out infinite;
}

.hero-bg::after {
    content: '';
    position: absolute;
    bottom: -30%;
    left: -10%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, var(--secondary-color) 0%, transparent 70%);
    opacity: 0.2;
    animation: float 10s ease-in-out infinite reverse;
}

@keyframes float {
    0%, 100% { transform: translate(0, 0) scale(1); }
    50% { transform: translate(30px, -30px) scale(1.05); }
}

.hero-content {
    text-align: center;
    position: relative;
    z-index: 1;
    max-width: 800px;
    padding: 40px 20px;
}

.hero h1 {
    font-size: 72px;
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 16px;
    letter-spacing: -2px;
}

.hero h2 {
    font-size: 32px;
    font-weight: 400;
    color: var(--text-secondary);
    margin-bottom: 24px;
}

.hero-desc {
    font-size: 18px;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 48px;
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: 60px;
    margin-bottom: 48px;
}

.stat-item {
    text-align: center;
}

.stat-number {
    display: block;
    font-size: 48px;
    font-weight: 700;
    color: var(--primary-color);
    line-height: 1;
}

.stat-label {
    font-size: 14px;
    color: var(--text-light);
    margin-top: 8px;
}

.hero-cta {
    display: flex;
    gap: 16px;
    justify-content: center;
}

/* 按钮样式 */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 32px;
    font-size: 16px;
    font-weight: 500;
    text-decoration: none;
    border-radius: var(--radius-md);
    transition: var(--transition-normal);
    cursor: pointer;
    border: none;
}

.btn-primary {
    background: var(--gradient-primary);
    color: white;
    box-shadow: 0 4px 16px rgba(74, 144, 164, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(74, 144, 164, 0.4);
}

.btn-secondary {
    background: transparent;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
}

.btn-secondary:hover {
    background: var(--primary-color);
    color: white;
}

.scroll-indicator {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
}

.scroll-indicator span {
    display: block;
    width: 24px;
    height: 40px;
    border: 2px solid var(--primary-color);
    border-radius: 12px;
    position: relative;
}

.scroll-indicator span::before {
    content: '';
    position: absolute;
    top: 8px;
    left: 50%;
    transform: translateX(-50%);
    width: 4px;
    height: 8px;
    background: var(--primary-color);
    border-radius: 2px;
    animation: scroll 1.5s ease-in-out infinite;
}

@keyframes scroll {
    0%, 100% { opacity: 1; transform: translateX(-50%) translateY(0); }
    50% { opacity: 0.5; transform: translateX(-50%) translateY(8px); }
}

/* 通用区块样式 */
section {
    padding: 100px 0;
}

.section-header {
    text-align: center;
    margin-bottom: 64px;
}

.section-header.light {
    color: white;
}

.section-header.light .section-tag {
    background: rgba(255,255,255,0.2);
    color: white;
}

.section-header.light h2 {
    color: white;
}

.section-header.light .section-desc {
    color: rgba(255,255,255,0.8);
}

.section-tag {
    display: inline-block;
    padding: 6px 16px;
    background: rgba(74, 144, 164, 0.1);
    color: var(--primary-color);
    font-size: 13px;
    font-weight: 500;
    border-radius: 20px;
    margin-bottom: 16px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.section-header h2 {
    font-size: 40px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 16px;
}

.section-desc {
    font-size: 18px;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* 关于量表 */
.about {
    background: var(--bg-light);
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 380px;
    gap: 60px;
    align-items: start;
}

.about-text p {
    font-size: 17px;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 20px;
}

.about-features {
    margin-top: 40px;
}

.feature-item {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    margin-bottom: 24px;
}

.feature-icon {
    font-size: 28px;
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: white;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
}

.feature-info h4 {
    font-size: 17px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.feature-info p {
    font-size: 15px;
    color: var(--text-secondary);
    margin: 0;
}

.about-card {
    background: white;
    border-radius: var(--radius-lg);
    padding: 32px;
    box-shadow: var(--shadow-md);
}

.about-card h3 {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 24px;
    color: var(--text-primary);
}

.info-list {
    list-style: none;
}

.info-list li {
    display: flex;
    justify-content: space-between;
    padding: 14px 0;
    border-bottom: 1px solid var(--border-color);
}

.info-list li:last-child {
    border-bottom: none;
}

.info-label {
    color: var(--text-secondary);
    font-size: 15px;
}

.info-value {
    color: var(--text-primary);
    font-weight: 500;
    font-size: 15px;
}

/* 核心特色 */
.features {
    background: var(--gradient-hero);
    position: relative;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.feature-card {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border-radius: var(--radius-lg);
    padding: 40px 32px;
    border: 1px solid rgba(255, 255, 255, 0.2);
    transition: var(--transition-normal);
}

.feature-card:hover {
    transform: translateY(-8px);
    background: rgba(255, 255, 255, 0.15);
    box-shadow: 0 20px 40px rgba(0,0,0,0.2);
}

.card-icon {
    width: 56px;
    height: 56px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 24px;
}

.card-icon svg {
    width: 28px;
    height: 28px;
    color: white;
}

.feature-card h3 {
    font-size: 22px;
    font-weight: 600;
    color: white;
    margin-bottom: 16px;
}

.feature-card ul {
    list-style: none;
}

.feature-card li {
    color: rgba(255, 255, 255, 0.85);
    font-size: 15px;
    padding: 8px 0;
    padding-left: 20px;
    position: relative;
}

.feature-card li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: rgba(255, 255, 255, 0.6);
}

/* 测评维度 */
.dimensions {
    background: var(--bg-light);
}

.dimensions-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 24px;
}

.dimension-card {
    background: white;
    border-radius: var(--radius-lg);
    padding: 28px;
    box-shadow: var(--shadow-sm);
    transition: var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.dimension-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transition: var(--transition-normal);
}

.dimension-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

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

.card-number {
    font-size: 13px;
    font-weight: 700;
    color: var(--primary-color);
    opacity: 0.5;
    margin-bottom: 12px;
}

.dimension-card h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.card-count {
    font-size: 13px;
    color: var(--text-light);
    margin-bottom: 12px;
}

.card-desc {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 16px;
}

.card-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.card-tags span {
    font-size: 12px;
    padding: 4px 10px;
    background: rgba(74, 144, 164, 0.1);
    color: var(--primary-color);
    border-radius: 12px;
}

/* 评分标准 */
.scoring-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
}

.scoring-method h3 {
    font-size: 22px;
    font-weight: 600;
    margin-bottom: 24px;
    color: var(--text-primary);
}

.method-table {
    background: white;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.table-row {
    display: grid;
    grid-template-columns: 100px 1fr 1fr;
    padding: 16px 20px;
    border-bottom: 1px solid var(--border-color);
    align-items: center;
}

.table-row:last-child {
    border-bottom: none;
}

.table-row.header {
    background: var(--bg-light);
    font-weight: 600;
    color: var(--text-primary);
}

.table-row:not(.header) {
    color: var(--text-secondary);
    font-size: 15px;
}

.table-row span:first-child {
    font-weight: 500;
    color: var(--text-primary);
}

.scoring-standards {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.standard-card {
    background: white;
    border-radius: var(--radius-lg);
    padding: 24px;
    box-shadow: var(--shadow-sm);
}

.standard-card h4 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 20px;
    color: var(--text-primary);
}

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

.level-item {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 12px 16px;
    border-radius: var(--radius-md);
    background: var(--bg-light);
}

.level-range {
    font-weight: 600;
    font-size: 14px;
    min-width: 90px;
}

.level-desc {
    font-size: 14px;
    color: var(--text-secondary);
}

.level-item.good {
    border-left: 4px solid var(--success-color);
}

.level-item.good .level-range {
    color: var(--success-color);
}

.level-item.warning {
    border-left: 4px solid var(--warning-color);
}

.level-item.warning .level-range {
    color: var(--warning-color);
}

.level-item.caution {
    border-left: 4px solid #FF8C00;
}

.level-item.caution .level-range {
    color: #FF8C00;
}

.level-item.danger {
    border-left: 4px solid var(--danger-color);
}

.level-item.danger .level-range {
    color: var(--danger-color);
}

.scoring-notice {
    margin-top: 48px;
    background: linear-gradient(135deg, #FFF3E0 0%, #FFE0B2 100%);
    border-radius: var(--radius-lg);
    padding: 28px 32px;
    display: flex;
    gap: 20px;
    align-items: flex-start;
}

.notice-icon {
    font-size: 28px;
    flex-shrink: 0;
}

.notice-content h4 {
    font-size: 17px;
    font-weight: 600;
    color: #E65100;
    margin-bottom: 8px;
}

.notice-content p {
    font-size: 15px;
    color: #BF360C;
    line-height: 1.7;
}

/* 使用说明 */
.instructions {
    background: var(--gradient-primary);
    position: relative;
}

.instructions-steps {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.step-card {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border-radius: var(--radius-lg);
    padding: 32px 24px;
    border: 1px solid rgba(255, 255, 255, 0.2);
    text-align: center;
    transition: var(--transition-normal);
}

.step-card:hover {
    transform: translateY(-4px);
    background: rgba(255, 255, 255, 0.15);
}

.step-number {
    width: 48px;
    height: 48px;
    background: white;
    color: var(--primary-color);
    font-size: 20px;
    font-weight: 700;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
}

.step-card h3 {
    font-size: 18px;
    font-weight: 600;
    color: white;
    margin-bottom: 12px;
}

.step-card p {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.85);
    line-height: 1.7;
}

/* 联系我们 */
.contact {
    background: var(--bg-light);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
}

.contact-info h3 {
    font-size: 24px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 16px;
}

.contact-info > p {
    font-size: 16px;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 32px;
}

.contact-items {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 15px;
    color: var(--text-secondary);
}

.contact-icon {
    font-size: 20px;
}

.contact-form {
    background: white;
    border-radius: var(--radius-lg);
    padding: 40px;
    box-shadow: var(--shadow-md);
}

.form-group {
    margin-bottom: 20px;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 14px 18px;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: 15px;
    font-family: inherit;
    transition: var(--transition-fast);
    background: var(--bg-light);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    background: white;
}

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

.contact-form .btn {
    width: 100%;
}

/* 页脚 */
.footer {
    background: var(--text-primary);
    color: white;
    padding: 60px 0 24px;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    margin-bottom: 40px;
}

.footer-brand .logo {
    font-size: 32px;
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.footer-brand p {
    color: rgba(255,255,255,0.6);
    margin-top: 8px;
    font-size: 15px;
}

.footer-links {
    display: flex;
    gap: 60px;
}

.link-group h4 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 16px;
    color: white;
}

.link-group ul {
    list-style: none;
}

.link-group li {
    margin-bottom: 10px;
}

.link-group a {
    color: rgba(255,255,255,0.6);
    text-decoration: none;
    font-size: 14px;
    transition: var(--transition-fast);
}

.link-group a:hover {
    color: white;
}

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding-top: 24px;
    text-align: center;
}

.footer-bottom p {
    color: rgba(255,255,255,0.5);
    font-size: 14px;
}

.footer-bottom .beian {
    margin-top: 8px;
    font-size: 13px;
}

.footer-bottom .beian a {
    color: rgba(255,255,255,0.4);
    text-decoration: none;
    transition: var(--transition-fast);
}

.footer-bottom .beian a:hover {
    color: rgba(255,255,255,0.7);
}

/* 快速测评入口 */
.quick-test {
    background: var(--gradient-primary);
    padding: 80px 0;
}

.quick-test-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 60px;
    align-items: center;
}

.quick-test-text h2 {
    font-size: 36px;
    font-weight: 700;
    color: white;
    margin-bottom: 16px;
}

.quick-test-text > p {
    font-size: 18px;
    color: rgba(255,255,255,0.9);
    margin-bottom: 24px;
}

.quick-test-features {
    list-style: none;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
}

.quick-test-features li {
    font-size: 16px;
    color: rgba(255,255,255,0.85);
}

.quick-test-action {
    text-align: center;
}

.quick-test-action .btn-large {
    background: white;
    color: var(--primary-color);
    padding: 20px 48px;
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 16px;
}

.quick-test-action .btn-large:hover {
    transform: translateY(-4px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.2);
}

.quick-test-action .btn-large svg {
    width: 24px;
    height: 24px;
}

.test-time {
    font-size: 14px;
    color: rgba(255,255,255,0.7);
}

/* 导航CTA按钮 */
.nav-cta {
    background: var(--gradient-primary);
    color: white !important;
    padding: 8px 20px !important;
    border-radius: 20px;
    font-weight: 500 !important;
}

.nav-cta:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(74, 144, 164, 0.3);
}

.nav-cta::after {
    display: none !important;
}

/* 响应式设计 */
@media (max-width: 1024px) {
    .dimensions-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .instructions-steps {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .nav-menu {
        display: none;
    }
    
    .hamburger {
        display: flex;
    }
    
    .quick-test-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .quick-test-text h2 {
        font-size: 28px;
    }
    
    .quick-test-features {
        grid-template-columns: 1fr;
        max-width: 300px;
        margin: 0 auto 24px;
    }
    
    .hero h1 {
        font-size: 48px;
    }
    
    .hero h2 {
        font-size: 24px;
    }
    
    .hero-stats {
        gap: 30px;
    }
    
    .stat-number {
        font-size: 36px;
    }
    
    .about-content {
        grid-template-columns: 1fr;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .dimensions-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .scoring-content {
        grid-template-columns: 1fr;
    }
    
    .instructions-steps {
        grid-template-columns: 1fr;
    }
    
    .contact-content {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        flex-direction: column;
        gap: 40px;
    }
    
    .footer-links {
        gap: 40px;
    }
}

@media (max-width: 480px) {
    .hero h1 {
        font-size: 36px;
    }
    
    .hero h2 {
        font-size: 20px;
    }
    
    .hero-cta {
        flex-direction: column;
    }
    
    .dimensions-grid {
        grid-template-columns: 1fr;
    }
    
    .section-header h2 {
        font-size: 28px;
    }
}