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

:root {
    --bg: #FAFAFA;
    --text-main: #000000;
    --text-muted: #A0A0A0;
    --accent: #222222;
    --line: #EAEAEA;
    --bullet: #444444;
    --node-border: #CCCCCC;
    --boundary: #CCCCCC;
}

/* 暗光模式：与主站 theme_v2 同步（由 main.js 切换 .dark） */
.dark {
    --bg: #111111;
    --text-main: #FFFFFF;
    --text-muted: #777777;
    --accent: #FFFFFF;
    --line: #2A2A2A;
    --bullet: #BBBBBB;
    --node-border: #555555;
    --boundary: #444444;
}

body {
    font-family: 'Inter', 'Noto Sans SC', sans-serif;
    background-color: var(--bg);
    color: var(--text-main);
    margin: 0;
    padding: 0;
    line-height: 1.6;
    /* 工程网格底层纹理，与主站呼应 */
    background-image:
        linear-gradient(rgba(31,79,255,0.05) 1px, transparent 1px),
        linear-gradient(90deg, rgba(31,79,255,0.05) 1px, transparent 1px);
    background-size: 48px 48px;
}

.dark body {
    background-image:
        linear-gradient(rgba(31,79,255,0.07) 1px, transparent 1px),
        linear-gradient(90deg, rgba(31,79,255,0.07) 1px, transparent 1px);
}

/* 引导区 */
.hero {
    padding: 90px 10% 40px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.hero h1 {
    font-size: 2.5rem;
    font-weight: 900;
    letter-spacing: -1px;
    margin: 0;
}

/* 经历列表容器 */
.experience-list {
    max-width: 1040px;
    margin: 0 auto;
    padding: 0 5% 150px;
}

/* 核心聚焦交互：父容器Hover时，所有子项变暗 */
.experience-list:hover .exp-row {
    opacity: 0.2;
}

/* 单行经历 (Grid 布局引入坐标轴) */
.exp-row {
    display: grid;
    grid-template-columns: 180px 60px 1fr;
    padding: 50px 0;
    transition: opacity 0.4s ease;
    position: relative;
}

/* 悬停当前的经历时，恢复高亮 */
.experience-list .exp-row:hover {
    opacity: 1;
}

/* 左侧：吸顶年份与角色 */
.meta-col {
    text-align: right;
}

.meta-sticky {
    position: sticky;
    top: 100px; /* 吸附在距离顶部100px处 */
}

.year {
    font-size: 0.85rem;
    color: var(--text-muted);
    letter-spacing: 2px;
    font-weight: 600;
    margin-bottom: 8px;
}

.role {
    font-size: 1.1rem;
    font-weight: 900;
    line-height: 1.4;
}

/* 中间：坐标轴与吸顶节点 */
.axis-col {
    position: relative;
    display: flex;
    justify-content: center;
}

/* 垂直线 */
.axis-col::before {
    content: '';
    position: absolute;
    top: 0;
    bottom: -50px; /* 贯穿上下 padding */
    width: 1px;
    background: var(--line);
}

.exp-row:last-child .axis-col::before {
    bottom: 0; /* 最后一个不向下延伸 */
}

/* 线条“充能”动效：蓝绿微光实线随滚动向下填充，如电流流过回路 */
.axis-col::after {
    content: '';
    position: absolute;
    top: 0;
    bottom: -50px;
    width: 1px;
    background: linear-gradient(180deg, #1F4FFF, #00C88C);
    box-shadow: 0 0 6px rgba(0,200,140,0.6);
    transform: scaleY(var(--charge, 0));
    transform-origin: top;
    pointer-events: none;
}

.exp-row:last-child .axis-col::after {
    bottom: 0;
}

/* 吸顶的时间点 */
.node {
    position: sticky;
    top: 106px; /* 与左侧文字对齐 */
    width: 9px;
    height: 9px;
    background: var(--bg);
    border: 2px solid var(--node-border);
    border-radius: 50%;
    z-index: 1;
    transition: all 0.3s ease;
}

/* 节点霓虹呼吸灯：hover 变科技绿 + 外发光 */
.exp-row:hover .node {
    border-color: #00C88C;
    background: #00C88C;
    transform: scale(1.4);
    box-shadow: 0 0 10px rgba(0,200,140,0.6), 0 0 0 4px rgba(0,200,140,0.15);
}

/* 右侧：价值详情 */
.detail-col {
    padding-bottom: 20px;
}

/* 核心价值 */
.core-value {
    font-size: 1.25rem;
    font-weight: 700;
    margin: 0 0 24px 0;
    color: var(--accent);
    line-height: 1.5;
}

/* 细节拆解列表 */
.bullet-point {
    font-size: 0.95rem;
    color: var(--bullet);
    margin-bottom: 16px;
    padding-left: 20px;
    position: relative;
}

.bullet-point::before {
    content: '—';
    position: absolute;
    left: 0;
    color: var(--text-muted);
    font-weight: 300;
}

.highlight {
    font-weight: 700;
    color: var(--text-main);
}

/* 高中分界标记 */
.boundary {
    grid-column: 1 / -1;
    display: flex;
    align-items: center;
    margin: 20px 0;
    color: var(--boundary);
    font-size: 0.75rem;
    letter-spacing: 4px;
    text-transform: uppercase;
}

.boundary::before,
.boundary::after {
    content: '';
    flex: 1;
    height: 1px;
    background: var(--line);
}

.boundary::before {
    margin-right: 20px;
}

.boundary::after {
    margin-left: 20px;
}

/* 移动端适配：隐藏坐标轴，改为卡片堆叠 */
@media (max-width: 768px) {
    .hero { padding: 60px 8% 20px; }
    .hero h1 { font-size: 1.8rem; }
    .exp-row {
        grid-template-columns: 1fr;
        gap: 15px;
        padding: 40px 0;
        border-bottom: 1px solid var(--line);
    }
    .axis-col { display: none; }
    .meta-col { text-align: left; }
    .meta-sticky { position: relative; top: 0; }
    .core-value { font-size: 1.15rem; }
}