:root {
    --dhr-orange: #FF7A00;
    --dhr-orange-light: #FF9A40;
    --dhr-blue: #3B82F6;
    --dhr-blue-light: #93C5FD;
    --dhr-gray: #4B5563;
    --dhr-gray-light: #9CA3AF;
}

body {
    font-family: 'Noto Sans SC', Tahoma, Arial, Roboto, "Droid Sans", "Helvetica Neue", "Droid Sans Fallback", "Heiti SC", "Hiragino Sans GB", Simsun, sans-serif;
    scroll-behavior: smooth;
}

.font-serif {
    font-family: 'Noto Serif SC', serif;
}

/* 主题色类 */
.bg-dhr-orange { background-color: var(--dhr-orange); }
.text-dhr-orange { color: var(--dhr-orange); }
.border-dhr-orange { border-color: var(--dhr-orange); }
.bg-dhr-blue { background-color: var(--dhr-blue); }
.text-dhr-blue { color: var(--dhr-blue); }
.border-dhr-blue { border-color: var(--dhr-blue); }

/* 首字下沉效果 */
.first-letter-drop:first-letter {
    font-size: 3.5rem;
    float: left;
    line-height: 0.8;
    margin-right: 0.5rem;
    color: var(--dhr-orange);
    font-weight: bold;
}

/* 卡片基础样式 */
.card-base {
    transition: all 0.3s ease;
    border-top: 3px solid transparent;
}

.card-base:hover {
    transform: translateY(-8px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
}

/* 赛道卡片 */
.track-card {
    @apply card-base;
}

.track-card:hover {
    border-top: 3px solid var(--dhr-orange);
}

/* 导师卡片 */
.mentor-card {
    @apply card-base;
}

.mentor-card:hover {
    background-color: var(--dhr-orange);
    color: white;
    transform: scale(1.05);
}

/* 时间线样式 */
.timeline-container {
    position: relative;
}

.timeline-container::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    height: 100%;
    width: 4px;
    background-color: var(--dhr-orange);
}

.timeline-item {
    position: relative;
    margin-bottom: 2rem;
}

.timeline-item::before {
    content: '\f3c5';
    font-family: 'Font Awesome 6 Free';
    font-weight: 900;
    position: absolute;
    top: 0.5rem;
    left: 50%;
    transform: translateX(-50%);
    width: 1.5rem;
    height: 1.5rem;
    color: var(--dhr-orange);
    background-color: white;
    border-radius: 50%;
    z-index: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
}

/* 动画效果 */
/* 自定义动画 */
.animate-on-scroll {
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.6s ease-out;
}

.animate-on-scroll.visible {
    opacity: 1;
    transform: translateY(0);
}

/* 时间线样式 */
.timeline-container {
    position: relative;
}

.timeline-container::before {
    content: '';
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 2px;
    background: #ff6b00;
    transform: translateX(-50%);
}

.timeline-item {
    margin-bottom: 2rem;
    position: relative;
}

/* 首字下沉效果 */
.first-letter-drop p:first-of-type::first-letter {
    font-size: 3em;
    float: left;
    margin-right: 0.1em;
    line-height: 1;
    color: #ff6b00;
}

/* 光标效果 */
.cursor-glow {
    cursor: pointer;
}

/* 光标特效 */
.cursor-glow {
    cursor: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='40' height='40' viewBox='0 0 40 40'><circle cx='20' cy='20' r='10' fill='rgba(255, 122, 0, 0.2)'/><circle cx='20' cy='20' r='5' fill='rgba(255, 122, 0, 0.6)'/></svg>"), auto;
}

/* 深色模式 */
@media (prefers-color-scheme: dark) {
    :root {
        --dhr-orange: #FF7A00;
        --dhr-orange-light: #FF9A40;
        --dhr-blue: #60A5FA;
        --dhr-blue-light: #93C5FD;
        --dhr-gray: #9CA3AF;
        --dhr-gray-light: #D1D5DB;
    }

    body {
        @apply bg-gray-900 text-gray-100;
    }

    .bg-white {
        @apply bg-gray-800;
    }

    .bg-gray-50 {
        @apply bg-gray-900;
    }

    .bg-gray-100 {
        @apply bg-gray-800;
    }

    .text-gray-800 {
        @apply text-gray-100;
    }

    .text-gray-700 {
        @apply text-gray-200;
    }

    .text-gray-600 {
        @apply text-gray-300;
    }

    .border-gray-200 {
        @apply border-gray-700;
    }

    .border-gray-300 {
        @apply border-gray-600;
    }

    .shadow-lg {
        box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.3), 0 4px 6px -2px rgba(0, 0, 0, 0.1);
    }

    .track-card,
    .mentor-card {
        @apply bg-gray-800;
    }
}

/* 响应式调整 */
@media (max-width: 768px) {
    .timeline-container::before {
        left: 2rem;
    }
    
    .timeline-item::before {
        left: 2rem;
    }
    
    .timeline-content {
        margin-left: 4rem;
    }
}

/* 添加统一的图标容器样式 */
.icon-container {
  position: relative;
  z-index: 2;
  background: var(--dhr-orange);
  color: white !important;
}

.icon-container i {
  color: white !important;
  font-size: 1.5rem;
}

/* 头部样式 */
/* Hero 区域样式 */
.hero-section {
    background: linear-gradient(135deg, var(--dhr-orange) 0%, var(--dhr-orange-light) 100%);
    position: relative;
    overflow: hidden;
    min-height: 600px;
}

.hero-section::before {
    content: '2025中国HR+AI\A应用创新大赛';
    white-space: pre;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 8rem;
    color: rgba(255, 255, 255, 0.1);
    font-family: 'Noto Serif SC', serif;
    font-weight: bold;
    pointer-events: none;
    width: 100%;
    text-align: center;
}

.hero-content {
    position: relative;
    z-index: 2;
    padding-top: 6rem;
    padding-bottom: 8rem;
}

.hero-title {
    font-family: 'Noto Serif SC', serif;
    font-size: 4rem;
    font-weight: bold;
    color: white;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.2);
    margin-bottom: 1.5rem;
}

.hero-subtitle {
    font-family: 'Noto Sans SC', sans-serif;
    font-size: 1.5rem;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 2rem;
}

.wave-container {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    overflow: hidden;
    line-height: 0;
    transform: rotate(180deg);
    z-index: 1;
}