:root {
    --nav-primary-bg: #8e2323; 
    --nav-primary-bg-darker: #6a1a1a; 
    --nav-accent-color: #d4a76a;
    --nav-text-color: #ffffff; 
    --nav-height: 70px; 
    --wood-bg: #eafaea; 
    --wood-text: #2e7d32;
    --wood-border: #a5d6a7; 
    --fire-bg: #fff0f0; 
    --fire-text: #c62828; 
    --fire-border: #ef9a9a;
    --earth-bg: #f5f3f2; 
    --earth-text: #6d4c41; 
    --earth-border: #d7ccc8; 
    --metal-bg: #f0f2f9;
    --metal-text: #283593; 
    --metal-border: #9fa8da; 
    --water-bg: #eef7ff;
    --water-text: #1565c0;
    --water-border: #90caf9; 
    --good-color: #2e7d32; 
    --bad-color: #c62828; 
    --neutral-color: #ff8f00;
}
.navbar { 
    background: linear-gradient(135deg, var(--nav-primary-bg), var(--nav-primary-bg-darker)); 
    height: var(--nav-height); 
    display: flex; 
    justify-content: center; 
    align-items: center; 
    font-size: 1.1rem; 
    position: fixed; 
    width: 100%; 
    top: 0; 
    z-index: 999; 
    box-shadow: 0 2px 10px rgba(0,0,0,0.2); 
}
.navbar-container { 
    display: flex; 
    justify-content: space-between; 
    align-items: center; 
    height: var(--nav-height); 
    z-index: 1; 
    width: 100%; 
    max-width: 1200px; 
    padding: 0 24px; 
    margin: 0 auto; 
}
.navbar-logo { 
    color: var(--nav-text-color); 
    display: flex; 
    align-items: center; 
    text-decoration: none; 
    font-size: 1.4rem; 
    font-weight: bold; 
    letter-spacing: 0.5px; 
    transition: all 0.3s ease; 
    white-space: nowrap; 
}
.navbar-logo:hover { 
    color: var(--nav-accent-color); 
    transform: scale(1.02); 
}
.menu-icon { 
    display: none; 
    color: var(--nav-text-color); 
    font-size: 1.8rem; 
    cursor: pointer; 
}
.nav-menu { 
    display: flex; 
    align-items: center; 
    list-style: none; 
    text-align: center; 
    margin: 0; 
    padding: 0; 
}
.nav-item { 
    height: var(--nav-height); 
}
.nav-link { 
    color: var(--nav-text-color); 
    display: flex; 
    align-items: center; 
    text-decoration: none; 
    padding: 0 1rem; 
    height: 100%; 
    transition: all 0.3s ease; 
    position: relative; 
    font-size: 0.95rem; 
    white-space: nowrap; 
}
.nav-link:hover { 
    color: var(--nav-accent-color); 
}
.nav-link::after { 
    content: ''; 
    position: absolute; 
    bottom: 15px; 
    left: 50%; 
    transform: translateX(-50%); 
    width: 0; 
    height: 2px; 
    background-color: var(--nav-accent-color); 
    transition: width 0.3s ease; 
}
.nav-link:hover::after, .nav-link.active::after { 
    width: 60%; 
}
@media (max-width: 960px) { 
    .navbar-container { padding: 0 15px; max-width: 100%; } 
    .menu-icon { display: block; position: absolute; right: 20px; top: 50%; transform: translateY(-50%); } 
    .nav-menu { display: none; flex-direction: column; width: 100%; height: auto; position: absolute; top: var(--nav-height); left: -100%; opacity: 0; transition: all 0.5s ease; background: linear-gradient(135deg, var(--nav-primary-bg-darker), var(--nav-primary-bg)); padding: 10px 0; z-index: 998; box-shadow: 0 5px 10px rgba(0,0,0,0.2); border-top: 1px solid rgba(255, 255, 255, 0.1); } 
    .nav-menu.active { display: flex; left: 0; opacity: 1; } 
    .nav-item { width: 100%; height: auto; border-bottom: 1px solid rgba(255, 255, 255, 0.1); } 
    .nav-item:last-child { border-bottom: none; } 
    .nav-link { padding: 0.8rem 1.5rem; width: 100%; display: block; font-size: 1rem; height: auto; text-align: center; } 
    .nav-link:hover { background-color: rgba(0,0,0, 0.1); color: var(--nav-accent-color); } 
    .nav-link::after { display: none; } 
}
* { 
    box-sizing: border-box; 
    margin: 0; 
    padding: 0; 
}
html { 
    scroll-behavior: smooth; 
}
body { 
    font-family: 'Microsoft YaHei', '微软雅黑', sans-serif; 
    background-color: #f8f9fa; 
    color: #333; 
    line-height: 1.7; 
    padding-top: 70px; 
}
a { 
    color: #8e2323; 
    text-decoration: none; 
}
a:hover { 
    color: #d4a76a; 
}
.container { 
    background-color: #ffffff; 
    border-radius: 10px; 
    box-shadow: 0 4px 15px rgba(0,0,0,0.08); 
    padding: 25px 35px; 
    margin: 30px auto; 
    max-width: 900px; 
    border: 1px solid #eee; 
}
h1, h2, h3 { 
    color: #8e2323; 
    text-align: center; 
}
h1 { 
    font-size: 2rem; 
    border-bottom: 2px solid #d4a76a; 
    padding-bottom: 12px; 
    margin-bottom: 10px; 
    font-weight: 700; 
}
h2 { 
    font-size: 1.6rem; 
    border-bottom: 1px solid #d4a76a; 
    padding-bottom: 8px; 
    margin-top: 30px; 
    margin-bottom: 20px; 
    font-weight: 600; 
}
h3 { 
    font-size: 1.2em; 
    border-bottom: 1px dotted #d4a76a; 
    text-align: left; 
    color: #6a1a1a; 
    margin-top: 20px; 
    margin-bottom: 15px; 
    font-weight: 600; 
}
h4 { 
    font-size: 1.1em; 
    text-align: left; 
    color: #555; 
    margin-top: 15px; 
    margin-bottom: 8px; 
    font-weight: bold; 
    border-bottom: none; 
}
h3 i, h4 i { 
    margin-right: 8px; 
    opacity: 0.7; 
}
.title-desc { 
    text-align: center; 
    color: #666; 
    margin-top: -5px; 
    margin-bottom: 30px; 
    font-size: 1em; 
}
.form-group { 
    margin-bottom: 25px; 
}
label { 
    display: block; 
    margin-bottom: 8px; 
    font-weight: bold; 
    color: #555; 
}
input[type="text"] { 
    width: 100%; 
    padding: 12px 15px; 
    border: 1px solid #d4a76a; 
    border-radius: 6px; 
    font-size: 16px; 
    transition: border-color 0.3s, box-shadow 0.3s; 
    height: 48px; 
}
input[type="text"]:focus { 
    border-color: #8e2323; 
    box-shadow: 0 0 0 3px rgba(142, 35, 35, 0.15); 
    outline: none; 
}
button { 
    background-color: #8e2323; 
    color: white; 
    border: none; 
    padding: 12px 30px; 
    border-radius: 6px; 
    cursor: pointer; 
    font-size: 16px; 
    display: block; 
    margin: 25px auto; 
    transition: all 0.3s ease; 
    font-weight: bold; 
    height: 48px; 
}
button:hover { 
    background-color: #6a1a1a; 
    transform: translateY(-2px); 
    box-shadow: 0 4px 8px rgba(0,0,0,0.1); 
}
.error-message { 
    color: #c62828; 
    text-align: center; 
    font-weight: bold; 
    background-color: #ffebee; 
    padding: 12px; 
    border-radius: 5px; 
    border: 1px solid #ef9a9a; 
    margin: 20px 0; 
}
.result-section { 
    margin-top: 35px; 
    border-top: 3px solid #8e2323; 
    padding-top: 25px; 
    animation: fadeIn 0.5s ease-out; 
}
@keyframes fadeIn { 
    from {opacity: 0;} 
    to {opacity: 1;} 
}
.analysis-box { 
    background-color: #f9f9f9; 
    padding: 18px 22px; 
    border-radius: 6px; 
    margin: 25px 0; 
    border-left: 5px solid #d4a76a; 
    box-shadow: 0 2px 5px rgba(0,0,0,0.04); 
}
.analysis-box h3 { 
    margin-top: 0; 
    margin-bottom: 12px; 
}
.analysis-box p { 
    margin-bottom: 10px; 
    line-height: 1.7; 
    font-size: 1em; 
}
.analysis-box small { 
    font-size: 0.85em; 
    color: #666; 
}
.good-text { 
    color: #2e7d32; 
    font-weight: bold; 
}
.bad-text { 
    color: #c62828; 
    font-weight: bold; 
}
.neutral-text { 
    color: #ff8f00; 
    font-weight: bold; 
}
.wuxing-analysis { 
    background-color: var(--earth-bg); 
    border-left-color: var(--earth-text); 
}
.wuxing-analysis h3, .wuxing-analysis h4 { 
    color: var(--earth-text); 
}
.wuxing-grid { 
    display: grid; 
    grid-template-columns: repeat(auto-fit, minmax(100px, 1fr)); 
    gap: 15px; 
    margin: 18px 0; 
}
.wuxing-item { 
    text-align: center; 
    padding: 15px 10px; 
    border-radius: 6px; 
    box-shadow: 0 2px 6px rgba(0,0,0,0.07); 
    transition: transform 0.2s ease-out; 
    border: 1px solid; 
}
.wuxing-item:hover { 
    transform: translateY(-3px); 
}
.wuxing-item h3 { 
    margin: 0 0 10px 0; 
    font-size: 1.2em; 
    border-bottom: none; 
    text-align: center; 
    font-weight: bold; 
    color: inherit; 
}
.wuxing-item p { 
    margin: 5px 0; 
    font-size: 0.9em; 
}
.wuxing-item p strong { 
    font-size: 1.2em; 
}
.wuxing-item p[style*="height"] { 
    font-size: 0.8em; 
    font-style: italic; 
    color: #555; 
}
.wood { 
    background-color: var(--wood-bg); 
    color: var(--wood-text); 
    border-color: var(--wood-border); 
}
.fire { 
    background-color: var(--fire-bg); 
    color: var(--fire-text); 
    border-color: var(--fire-border); 
}
.earth { 
    background-color: var(--earth-bg); 
    color: var(--earth-text); 
    border-color: var(--earth-border); 
}
.metal { 
    background-color: var(--metal-bg); 
    color: var(--metal-text); 
    border-color: var(--metal-border); 
}
.water { 
    background-color: var(--water-bg); 
    color: var(--water-text); 
    border-color: var(--water-border); 
}
.digit-analysis { 
    background-color: #f0f4f8; 
    border-left-color: #5e7c9e; 
}
.digit-analysis h3, .digit-analysis h4 { 
    color: #3b597a; 
}
.number-grid { 
    display: grid; 
    grid-template-columns: repeat(auto-fit, minmax(90px, 1fr)); 
    gap: 10px; 
    margin: 20px 0; 
}
.number-card { 
    padding: 10px; 
    text-align: center; 
    border-radius: 5px; 
    box-shadow: 0 2px 5px rgba(0,0,0,0.1); 
    font-size: 14px; 
    display: flex; 
    flex-direction: column; 
    justify-content: space-between; 
    min-height: 140px; 
    transition: transform 0.2s ease-out, box-shadow 0.2s ease-out; 
    border: 1px solid; 
}
.number-card:hover { 
    transform: translateY(-3px); 
    box-shadow: 0 4px 10px rgba(0,0,0,0.1); 
}
.number-card h3 { 
    margin: 5px 0 8px 0; 
    border-bottom: none; 
    text-align: center; 
    font-size: 1.8em; 
    color: inherit; 
    font-weight: bold; 
}
.number-card p { 
    margin: 3px 0; 
    font-size: 0.9em; 
}
.number-card p span { 
    padding: 2px 5px; 
    border-radius: 3px; 
    background-color: rgba(255,255,255,0.6); 
    font-weight: bold; 
    font-size: 0.9em; 
}
.number-card p small { 
    font-size: 0.85em; 
    color: #555; 
    font-style: italic; 
}
.number-card > small { 
    font-size: 0.8em; 
    color: #555; 
    margin-top: auto; 
    padding-top: 5px; 
}
.very-good { 
    background-color: #e8f5e9; 
    color: #2e7d32; 
    border-color: #a5d6a7; 
}
.good { 
    background-color: #eef7ff; 
    color: #1565c0; 
    border-color: #90caf9; 
}
.neutral { 
    background-color: #fff8e1; 
    color: #ff8f00; 
    border-color: #ffcc80; 
}
.bad { 
    background-color: #ffebee; 
    color: #c62828; 
    border-color: #ef9a9a; 
}
.digit-luck-summary p { 
    font-size: 1em; 
}
.digit-luck-summary span { 
    margin: 0 5px; 
    padding: 2px 5px; 
    border-radius: 4px; 
    background-color: rgba(0,0,0,0.04); 
}
.digit-luck-summary p[class*="-text"] { 
    margin-top: 10px; 
    font-size: 1.05em; 
    padding: 3px 8px; 
    border-radius: 4px; 
    display: inline-block; 
}
.digit-luck-summary p.good-text { 
    background-color: #e8f5e9; 
}
/* Note: The original style had `p[style*="--water-text"]` which is a bit unusual. 
   Assuming it was meant for a specific element or class, adjusting based on common patterns. 
   If it refers to a specific direct style on an element, it would still work. 
   For clarity, I'm adjusting to use a direct class if possible, or keeping it as is 
   if it implies inline style from PHP. */
.digit-luck-summary p[style*="--water-text"] { 
    background-color: #eef7ff; 
}
.digit-luck-summary p.neutral-text { 
    background-color: #fff8e1; 
}
.digit-luck-summary p.bad-text { 
    background-color: #ffebee; 
}
.score-rating-box { 
    background-color:#fff8e1; 
    border-left-color:#ffc107; 
}
.score-rating-box h3 { 
    color:#b08900; 
}
.score-bar { 
    height: 28px; 
    background-color: #e0e0e0; 
    border-radius: 14px; 
    margin: 15px 0 20px 0; 
    overflow: hidden; 
    border: 1px solid #ccc; 
    position: relative; 
    box-shadow: inset 0 1px 3px rgba(0,0,0,0.1); 
}
.score-fill { 
    height: 100%; 
    transition: width 0.8s cubic-b Bezier(0.25, 0.1, 0.25, 1), background 0.5s ease-in-out; 
    display: flex; 
    align-items: center; 
    justify-content: flex-end; 
    padding-right: 10px; 
    border-radius: 14px 0 0 14px; 
}
.score-fill span { 
    color: #fff; 
    font-weight: bold; 
    font-size: 0.9em; 
    text-shadow: 1px 1px 1px rgba(0,0,0,0.4); 
}
.score-fill.low { 
    background: linear-gradient(90deg, #ef9a9a, #f44336); 
}
.score-fill.medium { 
    background: linear-gradient(90deg, #ffcc80, #ff9800); 
}
.score-fill.good { 
    background: linear-gradient(90deg, #90caf9, #2196F3); 
}
.score-fill.excellent { 
    background: linear-gradient(90deg, #a5d6a7, #4CAF50); 
}
.rating-display { 
    text-align: center; 
    font-size: 1.1em; 
    margin-top: 15px; 
}
.rating-display span { 
    padding: 4px 12px; 
    border-radius: 15px; 
    font-weight: bold; 
    display: inline-block; 
    border: 1px solid; 
}
.rating-display span.very-good { 
    background-color: #e8f5e9; 
    color: #2e7d32; 
    border-color: #a5d6a7; 
}
.rating-display span.good { 
    background-color: #eef7ff; 
    color: #1565c0; 
    border-color: #90caf9; 
}
.rating-display span.neutral { 
    background-color: #fff8e1; 
    color: #ff8f00; 
    border-color: #ffcc80; 
}
.rating-display span.bad { 
    background-color: #ffebee; 
    color: #c62828; 
    border-color: #ef9a9a; 
}
.personality-analysis { 
    background-color: #eef7ff; 
    border-left-color: #1565c0; 
}
.personality-analysis h3 { 
    color: #1565c0; 
}
.personality-analysis strong { 
    color: #1565c0; 
}
.fortune-info { 
    background-color: #eafaea; 
    border-left-color: #2e7d32; 
}
.fortune-info h3 { 
    color: #2e7d32; 
}
.fortune-info strong { 
    color: #2e7d32; 
}
.conclusion-box { 
    background-color: #fffaf0; 
    border-left-color: #8e2323; 
}
.conclusion-box h3 { 
    color: #8e2323; 
}
.conclusion-box p strong { 
    color: #8e2323; 
    font-size: 1.1em; 
}
.fengshui-tips { 
    background-color: #f5f5f5; 
    border-left-color: #4CAF50; 
}
.fengshui-tips h3 { 
    color: #388e3c; 
}
.fengshui-item { 
    display: flex; 
    align-items: flex-start; 
    margin: 18px 0; 
    padding: 12px 15px; 
    background-color: white; 
    border-radius: 5px; 
    box-shadow: 0 1px 4px rgba(0,0,0,0.08); 
    border: 1px solid #e0e0e0; 
}
.fengshui-icon { 
    font-size: 28px; 
    margin-right: 15px; 
    width: 40px; 
    text-align: center; 
    padding-top: 3px; 
    color: #4CAF50; 
}
.fengshui-item div { 
    flex: 1; 
}
.fengshui-item strong { 
    display: block; 
    margin-bottom: 6px; 
    color: #4CAF50; 
    font-weight: bold; 
    font-size: 1.05em; 
}
.fengshui-item ul { 
    margin: 6px 0 0 0px; 
    padding-left: 20px; 
    list-style: disc; 
}
.fengshui-item li { 
    margin-bottom: 6px; 
    color: #555; 
}
.relation-diagram { 
    text-align: center; 
    margin: 15px 0; 
    font-size: 0.95em; 
    color: #555; 
    background-color: #f5f5f5; 
    padding: 12px; 
    border-radius: 5px; 
    border: 1px solid #e0e0e0; 
}
.relation-line { 
    margin: 5px 0; 
}
.disclaimer { 
    text-align: center; 
    font-size: 0.9em; 
    color: #666; 
    margin-top: 35px; 
    padding-top: 20px; 
    border-top: 1px solid #eee; 
}
footer { 
    text-align: center; 
    padding: 25px 20px; 
    margin-top: 30px; 
    background-color: #e9ecef; 
    color: #666; 
    font-size: 0.9em; 
    border-top: 1px solid #ddd; 
}
#back-to-top {
    display: none;
    position: fixed;
    bottom: 30px;
    right: 30px;
    z-index: 99999; /* 极高的z-index确保在最上层 */
    border: none;
    outline: none;
    background-color: var(--nav-primary-bg); /* 使用导航主色变量 */
    color: white;
    cursor: pointer;
    padding: 0;
    border-radius: 50%;
    font-size: 18px;
    box-shadow: 0 3px 10px rgba(0,0,0,0.3);
    transition: all 0.3s ease;
    width: 50px;
    height: 50px;
    text-align: center;
    line-height: 50px;
    -webkit-tap-highlight-color: transparent; /* 移除移动端点击高亮 */
}
#back-to-top i {
    vertical-align: middle;
}
#back-to-top:hover {
    background-color: var(--nav-primary-bg-darker); /* 使用导航深色变量 */
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(0,0,0,0.4);
}
/* 移动端适配 */
@media screen and (max-width: 768px) {
    #back-to-top {
        bottom: 25px;
        right: 25px;
        width: 46px;
        height: 46px;
        line-height: 46px;
        font-size: 16px;
    }
}
@media screen and (max-width: 480px) {
    #back-to-top {
        bottom: 20px;
        right: 20px;
        width: 42px;
        height: 42px;
        line-height: 42px;
        font-size: 14px;
    }
}
@media (max-width: 768px) { 
    .container { padding: 20px 25px; margin: 25px 15px; } 
    h1 { font-size: 1.8rem; } 
    h2 { font-size: 1.5rem; } 
    h3 { font-size: 1.2em; } 
    .wuxing-grid { grid-template-columns: repeat(auto-fit, minmax(90px, 1fr)); } 
    .number-grid { grid-template-columns: repeat(auto-fit, minmax(80px, 1fr)); } 
    .number-card { min-height: 140px; } 
}
@media (max-width: 480px) { 
    body { padding-top: 70px; /* 修正移动端padding-top*/ } 
    .container { padding: 15px 20px; margin: 20px 0; border-radius: 0; box-shadow: none; border: none; border-top: 1px solid #eee; border-bottom: 1px solid #eee; } 
    h1 { font-size: 1.6rem; } 
    h2 { font-size: 1.4rem; } 
    h3 { font-size: 1.15em; } 
    h4 { font-size: 1.05em; } 
    .title-desc { font-size: 0.9em; margin-bottom: 25px; } 
    input[type="text"] { font-size: 15px; height: 44px; } 
    button { font-size: 15px; height: 44px; padding: 10px 25px; } 
    .analysis-box { padding: 15px; } 
    .analysis-box p { font-size: 0.95em; } 
    .wuxing-grid { grid-template-columns: repeat(3, 1fr); gap: 10px; } 
    .number-grid { grid-template-columns: repeat(3, 1fr); gap: 10px; } 
    .number-card { min-height: 130px; font-size: 13px; } 
    .number-card h3 { font-size: 2em; } 
    .fengshui-item { flex-direction: column; align-items: flex-start; padding: 12px; } 
    .fengshui-icon { margin-bottom: 8px; margin-right: 0; width: auto; font-size: 24px; } 
    footer { font-size: 0.8em; padding: 20px 15px; } 
}