:root {
    --primary: #0D47A1;
    --primary-dark: #0A357A;
    --primary-light: #42A5F5;
    --bg-page: #F7FAFF;
    --bg-white: #FFFFFF;
    --bg-flow: #F0F5FB;
    --text-dark: #0A1F3D;
    --text-gray: #667085;
    --border-radius: 12px;
    --btn-radius: 10px;
    --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
    --transition: all 0.3s ease;
}
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
html {
    scroll-behavior: smooth;
}
body {
    font-family: 'Inter', sans-serif;
    background: var(--bg-page);
    color: var(--text-dark);
    line-height: 1.6;
}
button {
    border: none;
    font-family: inherit;
    cursor: pointer;
    transition: var(--transition);
}
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}
/* 移除hero内按钮样式，保留全局按钮类供其他区域使用 */
.btn-blue {
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    color: #fff;
    padding: 10px 28px;
    border-radius: var(--btn-radius);
    font-weight: 600;
    font-size: 14px;
}
.btn-blue:hover {
    box-shadow: var(--shadow-sm);
}
/* 首屏Hero 统一全局深蓝渐变背景、白色文字 */
.service-hero {
    background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 100%);
    color: #ffffff;
    padding: 40px 0;
    text-align: center;
}
.hero-wrap {
    display: block;
    text-align: center;
    
    gap: 40px;
}

/* 横线 + 英文标题（与案例页、联系页保持一致） */
.hero-eng {
    font-size: 14px;
    opacity: 0.8;
    display: inline-flex;
    align-items: center;
    gap: 12px;
     margin-bottom: 12px;  /* 新增：增加与下方标题的间距 */
}
.hero-eng::before {
    content: "";
    width: 28px;
    height: 2px;
    background: #fff;
    flex-shrink: 0;
}

.hero-left h1 {
    font-size: 42px;
    margin-bottom: 12px;
}
.hero-left p {
    font-size: 18px;
    opacity: 0.9;
    margin-bottom: 0;
}

/* 区块标题 */
.block-title {
    font-size: 24px;
    font-weight: 700;
    margin: 60px 0 28px;
}
.sub-desc {
    color: var(--text-gray);
    font-size: 14px;
    margin: -16px 0 24px;
}
/* 四大Tab按钮 */
.tab-group {
    display: flex;
    gap: 16px;
    margin-bottom: 40px;
}
.tab-btn {
    flex: 1;
    padding: 20px 10px;
    border-radius: var(--btn-radius);
    background: var(--bg-white);
    border: 1px solid #E4E8F0;
    font-size: 15px;
    transition: var(--transition);
}
.tab-btn.active {
    transform: scale(1.04);
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    color: #fff;
    border-color: transparent;
}
/* 服务计划4列卡片网格 */
.plan-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    margin-bottom: 60px;
}
.plan-card {
    background: var(--bg-white);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
    padding: 32px 20px;
    position: relative;
    overflow: hidden;
}
.plan-card::before {
    content: "";
    position: absolute;
    inset: 0;
    background-size: 70%;
    background-repeat: no-repeat;
    background-position: center;
    opacity: 0.08;
    z-index: 1;
}
.card-bg-resume::before { background-image: url("https://p3-flow-image-sign.byteimg.com/tos-cn-i-a9rned2ftf/line-resume.png"); }
.card-bg-interview::before { background-image: url("https://p3-flow-image-sign.byteimg.com/tos-cn-i-a9rned2ftf/line-interview.png"); }
.card-bg-intern::before { background-image: url("https://p3-flow-image-sign.byteimg.com/tos-cn-i-a9rned2ftf/line-intern.png"); }
.card-bg-study::before { background-image: url("https://p3-flow-image-sign.byteimg.com/tos-cn-i-a9rned2ftf/line-study.png"); }
.card-content {
    position: relative;
    z-index: 2;
}
.plan-card .tag {
    font-size: 12px;
    color: var(--primary);
    margin-bottom: 8px;
}
.plan-card h4 {
    font-size: 16px;
    margin-bottom: 6px;
}
.plan-card p {
    font-size: 12px;
    color: var(--text-gray);
}
/* 服务流程区块 */
.service-flow {
    background: var(--bg-flow);
    padding: 50px 0;
}
.flow-wrap {
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: relative;
}
.flow-wrap::before {
    content: "";
    position: absolute;
    top: 24px;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--primary-light);
    z-index: 1;
}
.flow-item {
    text-align: center;
    position: relative;
    z-index: 2;
    background: var(--bg-flow);
    padding: 0 10px;
}
.flow-num {
    width: 48px;
    height: 48px;
    line-height: 48px;
    border-radius: 50%;
    background: var(--bg-white);
    border: 2px solid var(--primary);
    color: var(--primary);
    font-weight: 700;
    display: inline-block;
    margin-bottom: 8px;
}
.flow-item h4 {
    font-size: 14px;
    margin-bottom: 4px;
}
.flow-item p {
    font-size: 12px;
    color: var(--text-gray);
}
/* 响应式适配 */
@media (max-width: 1024px) {
    .hero-wrap { grid-template-columns: 1fr; text-align: center; }
    .hero-right { align-items: center; margin-top: 30px; }
    .tab-group { flex-wrap: wrap; }
    .tab-btn { width: calc(50% - 8px); flex: none; }
    .plan-grid { grid-template-columns: repeat(2,1fr); }
    .flow-wrap { flex-wrap: wrap; gap:30px; }
}
@media (max-width:768) {
    .tab-btn, .plan-grid { grid-template-columns: 1fr; width:100%; }
    .hero-left h1 { font-size: 30px; }
    .service-hero {padding: 30px 0;}
}