:root {
    --color-primary: #29252bde;
    --color-bg: #f5f5f7;
    --color-card: #ffffff;
    --color-text: #333333;
    --color-text-secondary: rgb(44, 48, 53);
    --color-text-muted: #888888;
    --color-border: #ececec;
    --color-option-bg: #ececec3b;
    --color-disabled: #cccccc;
    --color-progress-bg: #dddddd;
    --color-dim-bar: #eeeeee;
    --shadow-sm: 0 2px 8px rgba(0,0,0,0.08);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.1);
    --shadow-card: rgba(0, 0, 0, 0.02) 0px 1px 3px 0px, rgba(27, 31, 35, 0.15) 0px 0px 0px 1px;
    --shadow-quiz: rgba(0, 0, 0, 0.05) 0px 6px 24px 0px, rgba(0, 0, 0, 0.08) 0px 0px 0px 1px;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
    background: var(--color-bg);
    color: var(--color-text);
    line-height: 1.6;
    padding: 10px;
}

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

header {
    text-align: center;
    padding: 30px 0;
}

h1 {
    font-size: 2rem;
    color: var(--color-primary);
    margin-bottom: 10px;
}

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

.progress-bar {
    background: var(--color-progress-bg);
    height: 10px;
    border-radius: 12px;
    margin: 20px 0;
    overflow: hidden;
}

.progress-fill {
    background: var(--color-primary);
    height: 100%;
    width: 0%;
    transition: width 0.3s;
}

.progress-text {
    text-align: center;
    color: var(--color-text-secondary);
    font-size: 0.85rem;
    margin-bottom: 20px;
}

.question {
    background: var(--color-card);
    border-radius: 12px;
    margin-bottom: 15px;
    padding: 18px;
    box-shadow: var(--shadow-card);
}

.question-title {
    font-size: 1rem;
    margin-bottom: 15px;
    color: var(--color-text);
    font-weight: 500;
}

.question-title:first-child {
    font-size: 0.85rem;
    color: var(--color-text-muted);
    margin-bottom: 8px;
    font-weight: 400;
}

.options {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.option {
    background: var(--color-option-bg);
    border: 2px solid var(--color-border);
    border-radius: 8px;
    padding: 6px 12px;
    cursor: pointer;
    transition: all 0.2s;
    font-size: 0.95rem;
    color: var(--color-text-secondary);
    display: flex;
    align-items: center;
    gap: 10px;
}

.option:hover {
    border-color: var(--color-primary);
}

.option.selected {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: #fff;
}

.option.selected .option-label {
    color: #fff;
}

.option-label {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    font-size: 1rem;
    color: var(--color-text-secondary);
    flex-shrink: 0;
}

.submit-btn {
    width: 100%;
    padding: 15px;
    background: var(--color-primary);
    color: #fff;
    border: none;
    border-radius: 8px;
    font-size: 1.1rem;
    cursor: pointer;
    margin-top: 20px;
    transition: opacity 0.2s;
}

.submit-btn:hover {
    opacity: 0.9;
}

.submit-btn:disabled {
    background: var(--color-disabled);
    cursor: not-allowed;
}

/* 结果页 */
.result {
    display: none;
    text-align: center;
    padding: 30px 0;
}

.result.show {
    display: block;
}

.result-type {
    font-size: 2.5rem;
    color: var(--color-primary);
    margin-bottom: 10px;
}

.result-match {
    color: var(--color-text-secondary);
    margin-bottom: 30px;
}

.result-image {
    width: 200px;
    height: 200px;
    border-radius: 20px;
    margin: 0 auto 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 4rem;
}

.result-desc {
    background: var(--color-card);
    border-radius: 12px;
    padding: 25px;
    text-align: left;
    margin-bottom: 25px;
    box-shadow: var(--shadow-sm);
}

.result-desc h3 {
    color: var(--color-primary);
    margin-bottom: 15px;
}

.result-desc p {
    color: var(--color-text-secondary);
    line-height: 1.8;
}

.dimensions {
    background: var(--color-card);
    border-radius: 12px;
    padding: 25px;
    margin-bottom: 25px;
    box-shadow: var(--shadow-sm);
}

.dimensions h3 {
    color: var(--color-primary);
    margin-bottom: 20px;
}

.dim-item {
    margin-bottom: 15px;
}

.dim-header {
    display: flex;
    justify-content: space-between;
    margin-bottom: 5px;
    font-size: 0.9rem;
    color: var(--color-text);
}

.dim-bar {
    height: 8px;
    background: var(--color-dim-bar);
    border-radius: 4px;
    overflow: hidden;
}

.dim-fill {
    height: 100%;
    border-radius: 4px;
    transition: width 1s;
}

.restart-btn {
    padding: 15px 40px;
    background: transparent;
    color: var(--color-primary);
    border: 2px solid var(--color-primary);
    border-radius: 8px;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.2s;
}

.restart-btn:hover {
    background: var(--color-primary);
    color: #fff;
}

.quiz {
    transition: opacity 0.3s;
    padding: 16px;
    border-radius: 12px;
    background: var(--color-card);
    box-shadow: var(--shadow-quiz);
}

.quiz.hide {
    display: none;
}

.footer {
    text-align: center;
    padding: 30px 0;
    margin-top: 20px;
    color: var(--color-text-muted);
    font-size: 0.85rem;
}

@media (max-width: 600px) {
    h1 { font-size: 1.5rem; }
    .question { padding: 15px; }
    .result-type { font-size: 2rem; }
}