:root {
    --bg-color: #0f0f0f;
    --glass-bg: rgba(255, 255, 255, 0.08);
    --glass-border: rgba(255, 255, 255, 0.15);
    --text-main: #ffffff;
    --text-sub: #a0a0a0;
    --accent: #ffffff;
    --radius: 10px;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif;
}

body {
    background-color: var(--bg-color);
    background-image:
        radial-gradient(at 0% 0%, rgba(255, 255, 255, 0.05) 0px, transparent 50%),
        radial-gradient(at 100% 100%, rgba(255, 255, 255, 0.05) 0px, transparent 50%);
    color: var(--text-main);
    padding: 20px;
    min-height: 100vh;
    display: flex;
    justify-content: center;
}

.glass-box {
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius);
    padding: 20px;
    margin-bottom: 20px;
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
}

.container {
    width: 100%;
    max-width: 800px;
}

header {
    text-align: center;
    margin-bottom: 20px;
}

h1 {
    font-size: 1.5rem;
    margin-bottom: 10px;
    letter-spacing: 2px;
    font-weight: 300;
}

.summary-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
    margin-top: 15px;
}

.summary-item .label {
    font-size: 0.8rem;
    color: var(--text-sub);
    margin-bottom: 5px;
}

.summary-item .value {
    font-size: 1.1rem;
    font-weight: bold;
}

.mainValue {
    font-size: 2rem !important;
    background: rgba(255, 255, 255, 0.1);
    padding: 5px 10px;
    border-radius: 4px;
}


#map-container {
    height: 400px;
    width: 100%;
    position: relative;
    overflow: hidden;
}

/* --- 重点改动：PART 标题层级样式 --- */
.section-header {
    position: relative;
    margin: 50px 0 20px 0;
    display: flex;
    align-items: center;
}

/* 底部巨大的投影斜体字 */
.section-header::after {
    content: attr(data-part);
    position: absolute;
    left: -5px;
    top: -25px;
    font-size: 3.5rem;
    font-weight: 900;
    font-style: italic;
    color: rgba(255, 255, 255, 0.04);
    z-index: 0;
    letter-spacing: -2px;
}

.section-title {
    position: relative;
    z-index: 1;
    font-size: 1.3rem;
    font-weight: 800;
    text-transform: uppercase;
    display: flex;
    align-items: center;
}

.section-title span {
    background: var(--text-main);
    color: var(--bg-color);
    padding: 2px 10px;
    border-radius: 4px;
    margin-right: 12px;
    font-size: 0.9rem;
    font-style: italic;
    /* PART 数字也带斜体 */
}

/* --- 改动结束 --- */

.timeline-item {
    position: relative;
    padding-left: 20px;
    margin-bottom: 20px;
    border-left: 1px dashed var(--glass-border);
}

.timeline-item:last-child {
    margin-bottom: 0;
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: -4px;
    top: 6px;
    width: 7px;
    height: 7px;
    background: var(--text-main);
    border-radius: 50%;
}

.route-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 8px;
}

.route-name {
    font-size: 1.2rem;
    font-weight: 600;
}

.route-cost {
    font-size: 0.9rem;
    background: rgba(255, 255, 255, 0.1);
    padding: 2px 6px;
    border-radius: 4px;
}

.detail-row {
    font-size: 0.9rem;
    color: var(--text-sub);
    margin-bottom: 6px;
    line-height: 1.5;
}

.highlight {
    color: var(--text-main);
    font-weight: 500;
    border-bottom: 1px solid rgba(255, 255, 255, 0.3);
}

.tool-tag {
    display: inline-block;
    font-size: 0.75rem;
    padding: 2px 6px;
    border: 1px solid var(--text-sub);
    border-radius: 4px;
    color: var(--text-sub);
    margin-top: 5px;
}

footer {
    text-align: center;
    font-size: 0.8rem;
    color: var(--text-sub);
    margin-top: 40px;
    padding-bottom: 20px;
    opacity: 0.6;
}

@media (max-width: 600px) {
    .summary-grid {
        grid-template-columns: 1fr;
    }

    #map-container {
        height: 300px;
    }
}