/* ==========================================
   MBTI 人格测试 - 完整样式表
   设计风格:深色主题
   ========================================== */

/* Google Fonts */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&family=Noto+Sans+SC:wght@300;400;500;600;700;900&display=swap');

/* ==========================================
   CSS 变量 (Design Tokens)
   ========================================== */
:root {
    /* 主色调 */
    --primary: #6c5ce7;
    --primary-light: #a29bfe;
    --primary-dark: #5b4cdb;
    --secondary: #00cec9;
    --accent: #fd79a8;

    /* 类型颜色 */
    --color-analysts: #88619a;
    --color-diplomats: #33a474;
    --color-sentinels: #4298b4;
    --color-explorers: #d2a638;

    /* 维度颜色 */
    --color-mind-e: #6c5ce7;
    --color-mind-i: #a29bfe;
    --color-energy-n: #fdcb6e;
    --color-energy-s: #e17055;
    --color-nature-t: #00cec9;
    --color-nature-f: #55efc4;
    --color-tactics-j: #e84393;
    --color-tactics-p: #fd79a8;
    --color-identity-a: #0984e3;
    --color-identity-t: #74b9ff;

    /* 背景 */
    --bg-primary: #0a0a1a;
    --bg-secondary: #12122a;
    --bg-card: rgba(255, 255, 255, 0.04);
    --bg-card-hover: rgba(255, 255, 255, 0.08);
    --bg-glass: rgba(255, 255, 255, 0.06);

    /* 文字 */
    --text-primary: #ffffff;
    --text-secondary: #b2bec3;
    --text-muted: #636e72;

    /* 边框 */
    --border-color: rgba(255, 255, 255, 0.08);
    --border-glow: rgba(108, 92, 231, 0.3);

    /* 字体 */
    --font-primary: 'Inter', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;

    /* 阴影 */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.2);
    --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.4);
    --shadow-glow: 0 0 30px rgba(108, 92, 231, 0.2);

    /* 圆角 */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 28px;

    /* 过渡 */
    --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-primary);
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* 背景装饰 */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background:
        radial-gradient(ellipse at 20% 20%, rgba(108, 92, 231, 0.08) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 80%, rgba(0, 206, 201, 0.06) 0%, transparent 50%),
        radial-gradient(ellipse at 50% 50%, rgba(253, 121, 168, 0.04) 0%, transparent 50%);
    pointer-events: none;
    z-index: 0;
}

a {
    color: var(--primary-light);
    text-decoration: none;
    transition: color var(--transition-fast);
}

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

/* ==========================================
   导航栏
   ========================================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(10, 10, 26, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
    padding: 0 2rem;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.navbar-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
    text-decoration: none;
}

.navbar-brand .logo-icon {
    font-size: 1.5rem;
}

.navbar-brand span {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.navbar-links {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.navbar-links a {
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: 500;
    transition: color var(--transition-fast);
    padding: 0.5rem 0;
}

.navbar-links a:hover {
    color: var(--text-primary);
}

/* ==========================================
   首页 Hero 区域
   ========================================== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 6rem 2rem 4rem;
    z-index: 1;
}

.hero-particles {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    pointer-events: none;
}

.hero-particles .particle {
    position: absolute;
    width: 4px;
    height: 4px;
    background: var(--primary-light);
    border-radius: 50%;
    opacity: 0;
    animation: particleFloat 8s ease-in-out infinite;
}

@keyframes particleFloat {
    0%, 100% { opacity: 0; transform: translateY(0) scale(0); }
    50% { opacity: 0.6; transform: translateY(-100px) scale(1); }
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 20px;
    background: var(--bg-glass);
    border: 1px solid var(--border-color);
    border-radius: 50px;
    font-size: 0.85rem;
    color: var(--primary-light);
    margin-bottom: 2rem;
    animation: fadeInDown 0.8s ease-out;
}

.hero-title {
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    font-weight: 900;
    line-height: 1.15;
    margin-bottom: 1.5rem;
    letter-spacing: -0.02em;
    animation: fadeInUp 0.8s ease-out 0.1s both;
}

.hero-title .gradient-text {
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 50%, var(--accent) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    background-size: 200% auto;
    animation: gradientShift 4s ease-in-out infinite;
}

@keyframes gradientShift {
    0%, 100% { background-position: 0% center; }
    50% { background-position: 100% center; }
}

.hero-subtitle {
    font-size: clamp(1rem, 2.5vw, 1.35rem);
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto 3rem;
    font-weight: 400;
    line-height: 1.7;
    animation: fadeInUp 0.8s ease-out 0.2s both;
}

.hero-cta {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    padding: 16px 40px;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: white;
    font-size: 1.1rem;
    font-weight: 600;
    border: none;
    border-radius: var(--radius-xl);
    cursor: pointer;
    text-decoration: none;
    transition: all var(--transition-normal);
    box-shadow: 0 4px 20px rgba(108, 92, 231, 0.4);
    animation: fadeInUp 0.8s ease-out 0.3s both;
}

.hero-cta:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 30px rgba(108, 92, 231, 0.6);
    color: white;
}

.hero-cta .arrow {
    transition: transform var(--transition-fast);
}

.hero-cta:hover .arrow {
    transform: translateX(4px);
}

/* 首页特性卡片 */
.features {
    position: relative;
    z-index: 1;
    padding: 4rem 2rem 6rem;
    max-width: 1100px;
    margin: 0 auto;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
}

.feature-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 2rem;
    transition: all var(--transition-normal);
    animation: fadeInUp 0.6s ease-out both;
}

.feature-card:nth-child(1) { animation-delay: 0.1s; }
.feature-card:nth-child(2) { animation-delay: 0.2s; }
.feature-card:nth-child(3) { animation-delay: 0.3s; }
.feature-card:nth-child(4) { animation-delay: 0.4s; }

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

.feature-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.feature-title {
    font-size: 1.15rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
}

.feature-desc {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* ==========================================
   测试页面
   ========================================== */
.test-container {
    position: relative;
    z-index: 1;
    max-width: 800px;
    margin: 0 auto;
    padding: 80px 1.5rem 4rem;
    min-height: 100vh;
}

/* 进度条区域 */
.progress-section {
    position: fixed;
    top: 64px;
    left: 0;
    right: 0;
    z-index: 100;
    background: rgba(10, 10, 26, 0.9);
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    border-bottom: 1px solid var(--border-color);
    padding: 12px 2rem;
}

.progress-inner {
    max-width: 800px;
    margin: 0 auto;
}

.progress-info {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 8px;
}

.progress-label {
    font-size: 0.8rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.progress-count {
    font-size: 0.8rem;
    color: var(--primary-light);
    font-weight: 600;
}

.progress-bar-outer {
    width: 100%;
    height: 6px;
    background: rgba(255, 255, 255, 0.08);
    border-radius: 3px;
    overflow: hidden;
}

.progress-bar-inner {
    height: 100%;
    background: linear-gradient(90deg, var(--primary), var(--secondary));
    border-radius: 3px;
    transition: width 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
}

.progress-bar-inner::after {
    content: '';
    position: absolute;
    right: 0;
    top: 0;
    width: 20px;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3));
    border-radius: 3px;
}

/* 组标题 */
.group-header {
    text-align: center;
    padding: 3rem 0 2rem;
    margin-top: 40px;
}

.group-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 16px;
    background: var(--bg-glass);
    border: 1px solid var(--border-color);
    border-radius: 50px;
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin-bottom: 1rem;
}

.group-icon {
    font-size: 2rem;
    margin-bottom: 0.5rem;
    display: block;
}

.group-title {
    font-size: 1.8rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.group-subtitle {
    font-size: 0.95rem;
    color: var(--text-secondary);
}

/* 题目容器 */
.question-wrapper {
    position: relative;
    overflow: hidden;
}

.question-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 2rem;
    margin-bottom: 1rem;
    transition: all var(--transition-normal);
    opacity: 1;
    transform: translateY(0);
}

.question-card.inactive {
    opacity: 0.3;
    pointer-events: none;
    transform: scale(0.98);
}

.question-card.completed {
    opacity: 0.6;
    border-color: rgba(0, 206, 201, 0.25);
    position: relative;
}

.question-card.active {
    border-color: var(--border-glow);
    box-shadow: var(--shadow-glow);
    background: var(--bg-card-hover);
    animation: cardActivate 0.4s ease-out;
}

@keyframes cardActivate {
    0% { opacity: 0.5; transform: translateY(10px); }
    100% { opacity: 1; transform: translateY(0); }
}

/* 题目完成勾选标记 */
.question-check {
    position: absolute;
    top: 12px;
    right: 12px;
    width: 28px;
    height: 28px;
    background: linear-gradient(135deg, var(--secondary), #00b894);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.8rem;
    font-weight: 700;
    animation: checkPop 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    box-shadow: 0 2px 10px rgba(0, 206, 201, 0.3);
}

@keyframes checkPop {
    0% { transform: scale(0); opacity: 0; }
    60% { transform: scale(1.2); }
    100% { transform: scale(1); opacity: 1; }
}

/* 选中涟漪动画 */
.selection-ripple {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: rgba(0, 206, 201, 0.08);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    animation: rippleExpand 0.6s ease-out;
    pointer-events: none;
}

@keyframes rippleExpand {
    0% { width: 0; height: 0; opacity: 1; }
    100% { width: 300%; height: 300%; opacity: 0; }
}

.question-number {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--primary-light);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 0.75rem;
}

.question-text {
    font-size: 1.1rem;
    font-weight: 500;
    line-height: 1.6;
    margin-bottom: 1.5rem;
    color: var(--text-primary);
}

/* 选项样式 - 7级量表 */
.options-scale {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0;
    padding: 0.5rem 0;
}

.options-labels {
    display: flex;
    justify-content: space-between;
    margin-top: 0.5rem;
    padding: 0 0.5rem;
}

.options-labels span {
    font-size: 0.75rem;
    color: var(--text-muted);
    font-weight: 500;
}

.option-item {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition-fast);
    padding: 8px;
}

.option-item input[type="radio"] {
    position: absolute;
    opacity: 0;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    margin: 0;
    cursor: pointer;
    z-index: 2;
}

/* 键盘焦点指示器 */
.option-item input[type="radio"]:focus-visible ~ .option-circle {
    outline: 3px solid var(--primary-light);
    outline-offset: 3px;
    border-color: rgba(255, 255, 255, 0.5);
    transform: scale(1.15);
}

.option-circle {
    border-radius: 50%;
    border: 2px solid rgba(255, 255, 255, 0.15);
    transition: all var(--transition-fast);
    position: relative;
}

/* 不同大小的圆 */
.option-item[data-value="1"] .option-circle,
.option-item[data-value="7"] .option-circle {
    width: 48px;
    height: 48px;
}

.option-item[data-value="2"] .option-circle,
.option-item[data-value="6"] .option-circle {
    width: 40px;
    height: 40px;
}

.option-item[data-value="3"] .option-circle,
.option-item[data-value="5"] .option-circle {
    width: 32px;
    height: 32px;
}

.option-item[data-value="4"] .option-circle {
    width: 26px;
    height: 26px;
}

/* 悬停效果 */
.option-item:hover .option-circle {
    border-color: rgba(255, 255, 255, 0.4);
    transform: scale(1.15);
}

/* 左侧(不同意)颜色 - 绿色调 */
.option-item[data-value="1"]:hover .option-circle {
    background: rgba(0, 206, 201, 0.3);
    border-color: var(--secondary);
}
.option-item[data-value="2"]:hover .option-circle {
    background: rgba(0, 206, 201, 0.25);
    border-color: var(--secondary);
}
.option-item[data-value="3"]:hover .option-circle {
    background: rgba(0, 206, 201, 0.2);
    border-color: var(--secondary);
}

/* 中间(中立)颜色 */
.option-item[data-value="4"]:hover .option-circle {
    background: rgba(255, 255, 255, 0.15);
    border-color: rgba(255, 255, 255, 0.5);
}

/* 右侧(同意)颜色 - 紫色调 */
.option-item[data-value="5"]:hover .option-circle {
    background: rgba(108, 92, 231, 0.2);
    border-color: var(--primary);
}
.option-item[data-value="6"]:hover .option-circle {
    background: rgba(108, 92, 231, 0.25);
    border-color: var(--primary);
}
.option-item[data-value="7"]:hover .option-circle {
    background: rgba(108, 92, 231, 0.3);
    border-color: var(--primary);
}

/* 选中状态 */
.option-item input[type="radio"]:checked ~ .option-circle {
    transform: scale(1.1);
}

.option-item[data-value="1"] input[type="radio"]:checked ~ .option-circle {
    background: var(--secondary);
    border-color: var(--secondary);
    box-shadow: 0 0 15px rgba(0, 206, 201, 0.4);
}
.option-item[data-value="2"] input[type="radio"]:checked ~ .option-circle {
    background: rgba(0, 206, 201, 0.8);
    border-color: var(--secondary);
    box-shadow: 0 0 12px rgba(0, 206, 201, 0.35);
}
.option-item[data-value="3"] input[type="radio"]:checked ~ .option-circle {
    background: rgba(0, 206, 201, 0.6);
    border-color: var(--secondary);
    box-shadow: 0 0 10px rgba(0, 206, 201, 0.3);
}
.option-item[data-value="4"] input[type="radio"]:checked ~ .option-circle {
    background: rgba(255, 255, 255, 0.4);
    border-color: rgba(255, 255, 255, 0.6);
    box-shadow: 0 0 10px rgba(255, 255, 255, 0.2);
}
.option-item[data-value="5"] input[type="radio"]:checked ~ .option-circle {
    background: rgba(108, 92, 231, 0.6);
    border-color: var(--primary);
    box-shadow: 0 0 10px rgba(108, 92, 231, 0.3);
}
.option-item[data-value="6"] input[type="radio"]:checked ~ .option-circle {
    background: rgba(108, 92, 231, 0.8);
    border-color: var(--primary);
    box-shadow: 0 0 12px rgba(108, 92, 231, 0.35);
}
.option-item[data-value="7"] input[type="radio"]:checked ~ .option-circle {
    background: var(--primary);
    border-color: var(--primary);
    box-shadow: 0 0 15px rgba(108, 92, 231, 0.4);
}

/* 组间导航按钮 */
.group-navigation {
    display: none;
    text-align: center;
    padding: 2.5rem 0;
    animation: fadeInUp 0.5s ease-out;
}

.group-navigation.visible {
    display: block;
}

.group-complete-msg {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
}

.group-complete-msg .checkmark {
    color: var(--secondary);
    font-size: 2rem;
    display: block;
    margin-bottom: 0.5rem;
    animation: checkPop 0.5s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.btn-next-group {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 36px;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: white;
    font-size: 1rem;
    font-weight: 600;
    border: none;
    border-radius: var(--radius-xl);
    cursor: pointer;
    transition: all var(--transition-normal);
    box-shadow: 0 4px 15px rgba(108, 92, 231, 0.3);
    outline: none;
}

.btn-next-group:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 25px rgba(108, 92, 231, 0.5);
}

.btn-next-group:focus-visible,
.btn-submit:focus-visible {
    outline: 3px solid var(--primary-light);
    outline-offset: 3px;
}

/* 脉冲高亮 - 一组完成后吸引注意力 */
.btn-next-group.pulse-highlight,
.btn-submit.pulse-highlight {
    animation: pulseGlow 1.5s ease-in-out 3;
}

@keyframes pulseGlow {
    0%, 100% {
        box-shadow: 0 4px 15px rgba(108, 92, 231, 0.3);
        transform: scale(1);
    }
    50% {
        box-shadow: 0 0 30px rgba(108, 92, 231, 0.6), 0 0 60px rgba(108, 92, 231, 0.2);
        transform: scale(1.05);
    }
}

.btn-submit {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 16px 40px;
    background: linear-gradient(135deg, var(--secondary), #00b894);
    color: white;
    font-size: 1.1rem;
    font-weight: 700;
    border: none;
    border-radius: var(--radius-xl);
    cursor: pointer;
    transition: all var(--transition-normal);
    box-shadow: 0 4px 15px rgba(0, 206, 201, 0.3);
    outline: none;
}

.btn-submit:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 25px rgba(0, 206, 201, 0.5);
}

.btn-submit.pulse-highlight {
    animation: pulseGlowGreen 1.5s ease-in-out 3;
}

@keyframes pulseGlowGreen {
    0%, 100% {
        box-shadow: 0 4px 15px rgba(0, 206, 201, 0.3);
        transform: scale(1);
    }
    50% {
        box-shadow: 0 0 30px rgba(0, 206, 201, 0.6), 0 0 60px rgba(0, 206, 201, 0.2);
        transform: scale(1.05);
    }
}

/* 组进度指示器 */
.group-indicators {
    display: flex;
    justify-content: center;
    gap: 8px;
    padding: 1rem 0;
    flex-wrap: wrap;
}

.group-indicator {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    border: 2px solid var(--border-color);
    background: transparent;
    color: var(--text-muted);
    font-size: 0.75rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.group-indicator:hover {
    border-color: var(--primary-light);
    color: var(--primary-light);
}

.group-indicator.active {
    background: var(--primary);
    border-color: var(--primary);
    color: white;
    box-shadow: 0 0 10px rgba(108, 92, 231, 0.4);
}

.group-indicator.completed {
    background: var(--secondary);
    border-color: var(--secondary);
    color: white;
}

.group-indicator.locked {
    opacity: 0.4;
    cursor: not-allowed;
}

/* ==========================================
   结果页面
   ========================================== */
.result-container {
    position: relative;
    z-index: 1;
    max-width: 900px;
    margin: 0 auto;
    padding: 80px 1.5rem 4rem;
}

/* 结果 Hero */
.result-hero {
    text-align: center;
    padding: 3rem 0 2rem;
    animation: fadeInUp 0.8s ease-out;
}

.result-category {
    display: inline-block;
    padding: 6px 20px;
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 600;
    color: white;
    margin-bottom: 1.5rem;
    letter-spacing: 1px;
}

.result-type-letters {
    font-size: clamp(4rem, 10vw, 7rem);
    font-weight: 900;
    letter-spacing: 0.15em;
    margin-bottom: 0.5rem;
    line-height: 1;
}

.result-type-name {
    font-size: clamp(1.5rem, 4vw, 2.5rem);
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.result-type-emoji {
    font-size: 3rem;
    margin-bottom: 1rem;
    display: block;
}

.result-identity {
    font-size: 1rem;
    color: var(--text-secondary);
    margin-bottom: 1rem;
}

.result-tagline {
    font-size: 1.15rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.7;
    font-style: italic;
}

/* 维度进度条 */
.scales-section {
    padding: 2rem 0;
    animation: fadeInUp 0.8s ease-out 0.2s both;
}

.scales-title {
    font-size: 1.5rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 2rem;
}

.scale-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 1.5rem 2rem;
    margin-bottom: 1rem;
    transition: all var(--transition-normal);
}

.scale-card:hover {
    background: var(--bg-card-hover);
    border-color: var(--border-glow);
}

.scale-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.75rem;
}

.scale-name {
    font-size: 0.8rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
    font-weight: 600;
}

.scale-poles {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 8px;
}

.scale-pole {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.9rem;
    font-weight: 600;
}

.scale-pole .letter {
    font-size: 1.1rem;
    font-weight: 800;
}

.scale-pole .percent {
    font-size: 1.3rem;
    font-weight: 800;
}

.scale-pole.dominant .percent {
    font-size: 1.5rem;
}

.scale-bar-outer {
    width: 100%;
    height: 10px;
    background: rgba(255, 255, 255, 0.06);
    border-radius: 5px;
    overflow: hidden;
    position: relative;
}

.scale-bar-fill {
    height: 100%;
    border-radius: 5px;
    transition: width 1.5s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
}

.scale-bar-fill::after {
    content: '';
    position: absolute;
    right: 0;
    top: 0;
    width: 30px;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2));
    border-radius: 5px;
}

/* 类型描述 */
.type-description-section {
    animation: fadeInUp 0.8s ease-out 0.3s both;
}

.section-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 2rem;
    margin-bottom: 1.5rem;
}

.section-card-title {
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 10px;
}

.section-card-text {
    font-size: 0.95rem;
    color: var(--text-secondary);
    line-height: 1.8;
}

/* 优势劣势 */
.traits-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
    margin-top: 1rem;
}

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

.trait-list-title {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
    display: flex;
    align-items: center;
    gap: 8px;
}

.trait-list li {
    font-size: 0.9rem;
    color: var(--text-secondary);
    padding: 6px 0;
    padding-left: 1.25rem;
    position: relative;
}

.trait-list li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 6px;
    height: 6px;
    border-radius: 50%;
}

.trait-list.strengths li::before {
    background: var(--secondary);
}

.trait-list.weaknesses li::before {
    background: var(--accent);
}

/* 维度详细描述 */
.dimension-details {
    animation: fadeInUp 0.8s ease-out 0.4s both;
}

.dimension-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 2rem;
    margin-bottom: 1rem;
    transition: all var(--transition-normal);
}

.dimension-card:hover {
    background: var(--bg-card-hover);
}

.dimension-card-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 1rem;
}

.dimension-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    flex-shrink: 0;
}

.dimension-card-title {
    font-size: 1.15rem;
    font-weight: 700;
}

.dimension-card-text {
    font-size: 0.92rem;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 1rem;
}

.dimension-traits {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 1rem;
}

.dimension-trait-tag {
    padding: 4px 14px;
    border-radius: 50px;
    font-size: 0.8rem;
    font-weight: 500;
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
}

.dimension-advice {
    padding: 1rem 1.25rem;
    background: rgba(108, 92, 231, 0.08);
    border-left: 3px solid var(--primary);
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    font-size: 0.88rem;
    color: var(--text-secondary);
    line-height: 1.7;
}

.dimension-advice-label {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--primary-light);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 4px;
}

/* 底部操作 */
.result-actions {
    text-align: center;
    padding: 3rem 0;
    animation: fadeInUp 0.8s ease-out 0.5s both;
}

.btn-restart {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 36px;
    background: transparent;
    color: var(--primary-light);
    font-size: 1rem;
    font-weight: 600;
    border: 2px solid var(--primary);
    border-radius: var(--radius-xl);
    cursor: pointer;
    text-decoration: none;
    transition: all var(--transition-normal);
}

.btn-restart:hover {
    background: var(--primary);
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(108, 92, 231, 0.3);
}

/* ==========================================
   动画
   ========================================== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(40px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

@keyframes shimmer {
    0% { background-position: -200% center; }
    100% { background-position: 200% center; }
}

/* ==========================================
   加载动画
   ========================================== */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--bg-primary);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    z-index: 10000;
    transition: opacity 0.5s ease;
}

.loading-overlay.fade-out {
    opacity: 0;
    pointer-events: none;
}

.loading-spinner {
    width: 50px;
    height: 50px;
    border: 3px solid rgba(255, 255, 255, 0.1);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    margin-bottom: 1rem;
}

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

.loading-text {
    font-size: 1rem;
    color: var(--text-secondary);
    animation: pulse 1.5s ease-in-out infinite;
}

/* ==========================================
   页脚
   ========================================== */
.footer {
    position: relative;
    z-index: 1;
    text-align: center;
    padding: 2rem;
    border-top: 1px solid var(--border-color);
    color: var(--text-muted);
    font-size: 0.8rem;
}

/* ==========================================
   响应式设计
   ========================================== */
@media (max-width: 768px) {
    .navbar {
        padding: 0 1rem;
    }

    .hero {
        padding: 5rem 1.5rem 3rem;
    }

    .hero-title {
        font-size: 2.2rem;
    }

    .test-container {
        padding: 70px 1rem 3rem;
    }

    .question-card {
        padding: 1.5rem;
    }

    .option-item[data-value="1"] .option-circle,
    .option-item[data-value="7"] .option-circle {
        width: 40px;
        height: 40px;
    }

    .option-item[data-value="2"] .option-circle,
    .option-item[data-value="6"] .option-circle {
        width: 34px;
        height: 34px;
    }

    .option-item[data-value="3"] .option-circle,
    .option-item[data-value="5"] .option-circle {
        width: 28px;
        height: 28px;
    }

    .option-item[data-value="4"] .option-circle {
        width: 22px;
        height: 22px;
    }

    .option-item {
        padding: 5px;
    }

    .traits-grid {
        grid-template-columns: 1fr;
    }

    .result-type-letters {
        font-size: 3.5rem;
    }

    .scale-card {
        padding: 1.25rem;
    }

    .group-indicators {
        gap: 6px;
    }

    .group-indicator {
        width: 30px;
        height: 30px;
        font-size: 0.65rem;
    }
}

@media (max-width: 480px) {
    .hero-cta {
        padding: 14px 30px;
        font-size: 1rem;
    }

    .option-item[data-value="1"] .option-circle,
    .option-item[data-value="7"] .option-circle {
        width: 34px;
        height: 34px;
    }

    .option-item[data-value="2"] .option-circle,
    .option-item[data-value="6"] .option-circle {
        width: 28px;
        height: 28px;
    }

    .option-item[data-value="3"] .option-circle,
    .option-item[data-value="5"] .option-circle {
        width: 24px;
        height: 24px;
    }

    .option-item[data-value="4"] .option-circle {
        width: 20px;
        height: 20px;
    }

    .question-text {
        font-size: 1rem;
    }
}

/* ==========================================
   滚动条美化
   ========================================== */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-primary);
}

::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.12);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: rgba(255, 255, 255, 0.2);
}

/* ==========================================
   分享按钮组
   ========================================== */
.share-buttons {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    margin-top: 0.5rem;
    flex-wrap: wrap;
}

.btn-copy {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 24px;
    background: var(--bg-glass);
    color: var(--text-primary);
    font-size: 0.9rem;
    font-weight: 500;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.btn-copy:hover {
    background: var(--bg-card-hover);
    border-color: var(--primary);
    transform: translateY(-1px);
}

.btn-copy:focus-visible {
    outline: 3px solid var(--primary-light);
    outline-offset: 2px;
}

.btn-copy.copied {
    border-color: var(--secondary);
    color: var(--secondary);
    background: rgba(0, 206, 201, 0.1);
}

/* 复制成功 Toast */
.copy-toast {
    margin-top: 1rem;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--secondary);
    opacity: 0;
    transform: translateY(5px);
    transition: all 0.3s ease;
    height: 0;
    overflow: hidden;
}

.copy-toast.visible {
    opacity: 1;
    transform: translateY(0);
    height: auto;
    padding-top: 0.25rem;
}

.copy-toast.error {
    color: var(--accent);
}

/* ==========================================
   无障碍 - 焦点指示器
   ========================================== */
.option-item:focus-visible .option-circle {
    outline: 3px solid var(--primary-light);
    outline-offset: 3px;
}

.option-item {
    outline: none;
}

/* 屏幕阅读器专用 */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* ==========================================
   打印样式
   ========================================== */
@media print {
    body {
        background: white;
        color: #333;
    }

    body::before {
        display: none;
    }

    .navbar, .result-actions, .footer, .share-section {
        display: none;
    }

    .section-card, .scale-card, .dimension-card {
        border: 1px solid #ddd;
        background: white;
    }
}

/* ==========================================
   首页 - 测试选择卡片
   ========================================== */
.test-cards-section {
    padding: 4rem 2rem;
    max-width: 1100px;
    margin: 0 auto;
}

.test-cards-title {
    text-align: center;
    font-size: 1.8rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.test-cards-subtitle {
    text-align: center;
    color: var(--text-secondary);
    margin-bottom: 3rem;
    font-size: 1rem;
}

.test-cards-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
}

.test-card {
    position: relative;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 2.5rem 2rem;
    transition: all var(--transition-normal);
    overflow: hidden;
    text-decoration: none;
    color: var(--text-primary);
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.test-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
}

.test-card.mbti::before { background: linear-gradient(90deg, #6c5ce7, #a29bfe); }
.test-card.depression::before { background: linear-gradient(90deg, #00cec9, #55efc4); }
.test-card.iq::before { background: linear-gradient(90deg, #e84393, #fd79a8); }
.test-card.audiometry::before { background: linear-gradient(90deg, #f39c12, #f1c40f); }

.test-card:hover {
    transform: translateY(-8px);
    border-color: var(--border-glow);
    box-shadow: var(--shadow-glow);
    background: var(--bg-card-hover);
    color: var(--text-primary);
}

.test-card-icon {
    font-size: 3rem;
    margin-bottom: 1.25rem;
    display: block;
}

.test-card-title {
    font-size: 1.35rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
}

.test-card-desc {
    font-size: 0.88rem;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 1.25rem;
    flex: 1;
}

.test-card-meta {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    margin-bottom: 1.5rem;
}

.test-card-tag {
    padding: 4px 12px;
    border-radius: 50px;
    font-size: 0.72rem;
    font-weight: 500;
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid var(--border-color);
    color: var(--text-muted);
}

.test-card-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 24px;
    border-radius: var(--radius-xl);
    font-size: 0.9rem;
    font-weight: 600;
    color: white;
    transition: all var(--transition-fast);
}

.test-card.mbti .test-card-btn { background: linear-gradient(135deg, #6c5ce7, #5b4cdb); }
.test-card.depression .test-card-btn { background: linear-gradient(135deg, #00cec9, #00b894); }
.test-card.iq .test-card-btn { background: linear-gradient(135deg, #e84393, #d63384); }
.test-card.audiometry .test-card-btn { background: linear-gradient(135deg, #f39c12, #e67e22); }

.test-card:hover .test-card-btn {
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
}

@media (max-width: 1024px) {
    .test-cards-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .test-cards-grid {
        grid-template-columns: 1fr;
    }
}

/* ==========================================
   免责声明弹窗
   ========================================== */
.disclaimer-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(10, 10, 26, 0.95);
    z-index: 10000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
    overflow-y: auto;
}

.disclaimer-modal {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 3rem;
    max-width: 600px;
    width: 100%;
    text-align: center;
    animation: fadeInUp 0.5s ease-out;
}

.disclaimer-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.disclaimer-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    color: #e17055;
}

.disclaimer-content {
    text-align: left;
    margin-bottom: 2rem;
}

.disclaimer-content p {
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 1rem;
    font-size: 0.92rem;
}

.disclaimer-warnings {
    background: rgba(225, 112, 85, 0.08);
    border: 1px solid rgba(225, 112, 85, 0.15);
    border-radius: var(--radius-md);
    padding: 1.25rem;
    margin: 1rem 0;
}

.disclaimer-item {
    padding: 6px 0;
    font-size: 0.88rem;
    color: var(--text-secondary);
    display: flex;
    gap: 8px;
    align-items: flex-start;
}

.disclaimer-bullet {
    color: #e17055;
    font-weight: 700;
    flex-shrink: 0;
}

.disclaimer-hotline {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 1.25rem;
    margin-top: 1rem;
}

.hotline-title {
    font-weight: 700;
    margin-bottom: 0.5rem;
    font-size: 0.9rem;
}

.hotline-item {
    font-size: 0.85rem;
    color: var(--text-secondary);
    padding: 3px 0;
}

.hotline-item strong {
    color: var(--text-primary);
}

.disclaimer-agree-btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 36px;
    background: linear-gradient(135deg, #00cec9, #00b894);
    color: white;
    font-size: 1rem;
    font-weight: 600;
    border: none;
    border-radius: var(--radius-xl);
    cursor: pointer;
    transition: all var(--transition-normal);
    box-shadow: 0 4px 15px rgba(0, 206, 201, 0.3);
    margin-bottom: 1rem;
}

.disclaimer-agree-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 25px rgba(0, 206, 201, 0.5);
}

.disclaimer-back-link {
    display: block;
    color: var(--text-muted);
    font-size: 0.85rem;
    text-decoration: none;
    transition: color var(--transition-fast);
}

.disclaimer-back-link:hover {
    color: var(--text-secondary);
}

/* ==========================================
   抑郁自评测试页面
   ========================================== */
.dep-test-container {
    position: relative;
    z-index: 1;
    max-width: 800px;
    margin: 0 auto;
    padding: 80px 1.5rem 4rem;
    min-height: 100vh;
}

.dep-intro {
    text-align: center;
    padding: 3rem 0 2rem;
    margin-top: 40px;
}

.dep-intro-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 16px;
    background: var(--bg-glass);
    border: 1px solid var(--border-color);
    border-radius: 50px;
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin-bottom: 1rem;
}

.dep-intro-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.dep-intro-title em {
    color: var(--secondary);
    font-style: normal;
    text-decoration: underline;
    text-decoration-color: rgba(0, 206, 201, 0.3);
    text-underline-offset: 4px;
}

.dep-intro-subtitle {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.dep-question-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 2rem;
    margin-bottom: 1.25rem;
    transition: all var(--transition-normal);
}

.dep-question-card.completed {
    border-color: rgba(0, 206, 201, 0.25);
}

.dep-question-number {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--primary-light);
    letter-spacing: 1px;
    margin-bottom: 0.5rem;
}

.dep-question-text {
    font-size: 1.15rem;
    font-weight: 600;
    line-height: 1.5;
    margin-bottom: 0.25rem;
}

.dep-question-desc {
    font-size: 0.82rem;
    color: var(--text-muted);
    margin-bottom: 1.25rem;
}

.dep-options {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.dep-option-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 0.75rem 1rem;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.dep-option-item:hover {
    background: rgba(255, 255, 255, 0.06);
    border-color: rgba(255, 255, 255, 0.15);
}

.dep-option-item input[type="radio"] {
    position: absolute;
    opacity: 0;
    width: 0;
    height: 0;
}

.dep-option-content {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    flex: 1;
}

.dep-option-score {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    border: 2px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 0.85rem;
    color: var(--text-muted);
    flex-shrink: 0;
    transition: all var(--transition-fast);
}

.dep-option-label {
    font-weight: 600;
    font-size: 0.9rem;
}

.dep-option-desc {
    font-size: 0.75rem;
    color: var(--text-muted);
}

.dep-option-check {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: var(--secondary);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.7rem;
    font-weight: 700;
    opacity: 0;
    transform: scale(0);
    transition: all var(--transition-fast);
    flex-shrink: 0;
}

.dep-option-item.selected {
    background: rgba(0, 206, 201, 0.08);
    border-color: rgba(0, 206, 201, 0.3);
}

.dep-option-item.selected .dep-option-score {
    background: var(--secondary);
    border-color: var(--secondary);
    color: white;
}

.dep-option-item.selected .dep-option-check {
    opacity: 1;
    transform: scale(1);
}

.dep-submit-section {
    text-align: center;
    padding: 2.5rem 0;
    animation: fadeInUp 0.5s ease-out;
}

/* ==========================================
   智商测试 - 开始页面
   ========================================== */
.iq-intro-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(10, 10, 26, 0.95);
    z-index: 10000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
}

.iq-intro-modal {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 3rem;
    max-width: 550px;
    width: 100%;
    text-align: center;
    animation: fadeInUp 0.5s ease-out;
}

.iq-intro-icon {
    font-size: 3.5rem;
    margin-bottom: 1rem;
}

.iq-intro-title {
    font-size: 1.6rem;
    font-weight: 700;
    margin-bottom: 2rem;
    background: linear-gradient(135deg, #e84393, #fd79a8);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.iq-intro-stat-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
    margin-bottom: 2rem;
}

.iq-intro-stat {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 1rem;
}

.iq-intro-stat-num {
    font-size: 2rem;
    font-weight: 900;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.iq-intro-stat-label {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-top: 2px;
}

.iq-intro-rules {
    text-align: left;
    margin-bottom: 2rem;
}

.iq-intro-rule {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 0;
    font-size: 0.88rem;
    color: var(--text-secondary);
}

.iq-rule-icon {
    font-size: 1.1rem;
    flex-shrink: 0;
}

.iq-start-btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 40px;
    background: linear-gradient(135deg, #e84393, #d63384);
    color: white;
    font-size: 1.1rem;
    font-weight: 600;
    border: none;
    border-radius: var(--radius-xl);
    cursor: pointer;
    transition: all var(--transition-normal);
    box-shadow: 0 4px 20px rgba(232, 67, 147, 0.4);
}

.iq-start-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 30px rgba(232, 67, 147, 0.6);
}

/* ==========================================
   智商测试 - 倒计时器
   ========================================== */
.iq-timer-bar {
    position: fixed;
    top: 64px;
    left: 0;
    right: 0;
    z-index: 100;
    background: rgba(10, 10, 26, 0.9);
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    border-bottom: 1px solid var(--border-color);
    padding: 10px 2rem;
    display: none;
}

.iq-timer-bar.active {
    display: block;
}

.iq-timer-inner {
    max-width: 800px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    gap: 1rem;
}

.iq-timer-left {
    display: flex;
    align-items: center;
    gap: 6px;
    flex-shrink: 0;
}

.iq-timer-icon {
    font-size: 1rem;
}

.iq-timer-text {
    font-size: 1.2rem;
    font-weight: 800;
    font-variant-numeric: tabular-nums;
    color: var(--text-primary);
    min-width: 55px;
}

.iq-timer-progress {
    flex: 1;
    height: 6px;
    background: rgba(255, 255, 255, 0.08);
    border-radius: 3px;
    overflow: hidden;
}

.iq-timer-fill {
    height: 100%;
    background: linear-gradient(90deg, #e84393, #fd79a8);
    border-radius: 3px;
    transition: width 1s linear;
}

.iq-timer-bar.urgent .iq-timer-text {
    color: #d63031;
    animation: pulse 0.5s ease-in-out infinite;
}

.iq-timer-right {
    font-size: 0.85rem;
    color: var(--text-secondary);
    font-weight: 600;
    flex-shrink: 0;
}

/* ==========================================
   智商测试 - 测试页面
   ========================================== */
.iq-test-container {
    position: relative;
    z-index: 1;
    max-width: 800px;
    margin: 0 auto;
    padding: 90px 1.5rem 4rem;
    min-height: 100vh;
}

.iq-nav-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    justify-content: center;
    margin-bottom: 2rem;
    padding: 1rem;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
}

.iq-nav-btn {
    width: 36px;
    height: 36px;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    background: transparent;
    color: var(--text-muted);
    font-size: 0.75rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
}

.iq-nav-btn:hover {
    border-color: var(--primary-light);
    color: var(--primary-light);
}

.iq-nav-btn.current {
    background: var(--primary);
    border-color: var(--primary);
    color: white;
    box-shadow: 0 0 10px rgba(108, 92, 231, 0.4);
}

.iq-nav-btn.answered {
    background: rgba(0, 206, 201, 0.2);
    border-color: rgba(0, 206, 201, 0.3);
    color: #00cec9;
}

.iq-nav-btn.answered.current {
    background: var(--primary);
    border-color: var(--primary);
    color: white;
}

/* 题目卡片 */
.iq-question-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 2rem;
    margin-bottom: 1.5rem;
}

.iq-question-header {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1.25rem;
    flex-wrap: wrap;
}

.iq-question-badge {
    padding: 4px 12px;
    border-radius: 50px;
    font-size: 0.72rem;
    font-weight: 600;
}

.iq-question-badge.iq-type-sequence {
    background: rgba(108, 92, 231, 0.15);
    color: #a29bfe;
}

.iq-question-badge.iq-type-logic {
    background: rgba(0, 206, 201, 0.15);
    color: #00cec9;
}

.iq-question-badge.iq-type-math {
    background: rgba(253, 121, 168, 0.15);
    color: #fd79a8;
}

.iq-question-num {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-left: auto;
}

.iq-difficulty {
    font-size: 0.8rem;
    color: #fdcb6e;
    letter-spacing: 2px;
}

.iq-question-text {
    font-size: 1.1rem;
    font-weight: 500;
    line-height: 1.7;
    margin-bottom: 1.5rem;
}

.iq-question-text strong {
    color: var(--primary-light);
    font-size: 1.2rem;
}

/* 选项 */
.iq-options {
    display: flex;
    flex-direction: column;
    gap: 0.6rem;
}

.iq-option-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.85rem 1.25rem;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
    position: relative;
}

.iq-option-item:hover {
    background: rgba(255, 255, 255, 0.06);
    border-color: rgba(255, 255, 255, 0.15);
    transform: translateX(4px);
}

.iq-option-item input[type="radio"] {
    position: absolute;
    opacity: 0;
    width: 0;
    height: 0;
}

.iq-option-label {
    display: flex;
    align-items: center;
    gap: 10px;
    flex: 1;
}

.iq-option-letter {
    width: 30px;
    height: 30px;
    border-radius: 8px;
    border: 2px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 0.85rem;
    color: var(--text-muted);
    flex-shrink: 0;
    transition: all var(--transition-fast);
}

.iq-option-text {
    font-size: 0.95rem;
    font-weight: 500;
}

.iq-option-check {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: var(--primary);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.7rem;
    font-weight: 700;
    opacity: 0;
    transform: scale(0);
    transition: all var(--transition-fast);
    flex-shrink: 0;
}

.iq-option-item.selected {
    background: rgba(108, 92, 231, 0.08);
    border-color: rgba(108, 92, 231, 0.3);
}

.iq-option-item.selected .iq-option-letter {
    background: var(--primary);
    border-color: var(--primary);
    color: white;
}

.iq-option-item.selected .iq-option-check {
    opacity: 1;
    transform: scale(1);
}

/* 题目导航按钮 */
.iq-question-nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 2rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border-color);
}

.iq-nav-prev,
.iq-nav-next {
    padding: 10px 24px;
    background: var(--bg-glass);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.iq-nav-prev:hover,
.iq-nav-next:hover {
    background: var(--bg-card-hover);
    border-color: var(--primary);
    color: var(--text-primary);
}

.iq-submit-btn {
    padding: 12px 28px;
    background: linear-gradient(135deg, #e84393, #d63384);
    color: white;
    border: none;
    border-radius: var(--radius-xl);
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-normal);
    box-shadow: 0 4px 15px rgba(232, 67, 147, 0.3);
}

.iq-submit-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 25px rgba(232, 67, 147, 0.5);
}

.iq-bottom-submit {
    text-align: center;
    padding: 2rem 0;
}

.iq-bottom-hint {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-top: 0.75rem;
}