:root {
    --klein-blue: #002FA7;
    --klein-blue-light: #2046B3;
    --klein-blue-dark: #001F73;
    --accent-color: #00E4FF;
    --text-color: #333;
    --text-secondary: #666;
    --text-tertiary: #999;
    --bg-color: #f5f8ff;
    --card-bg: #fff;
    --section-bg: rgba(0, 47, 167, 0.03);
    --special-gradient: linear-gradient(135deg, var(--klein-blue-light) 0%, var(--accent-color) 100%);
    --shadow: 0 10px 30px rgba(0, 47, 167, 0.10);
    --shadow-hover: 0 16px 40px rgba(0, 47, 167, 0.16);
    --radius: 15px;
    --font-main: 'PingFang SC', 'Helvetica Neue', Arial, sans-serif;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: var(--font-main);
}

body {
    line-height: 1.7;
    color: var(--text-color);
    background: var(--bg-color);
    min-height: 100vh;
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 32px 20px 40px 20px;
}

.header {
    text-align: center;
    color: white;
    margin-bottom: 40px;
    padding: 60px 0 80px 0;
    position: relative;
    overflow: hidden;
    background: var(--klein-blue);
    border-radius: 0 0 30px 30px;
}

.header-content {
    position: relative;
    z-index: 2;
    max-width: 1200px;
    margin: 0 auto;
    text-align: center;
    padding: 0 24px;
}

.header-content::before {
    content: '';
    position: absolute;
    left: 0; right: 0; top: 0; bottom: 0;
    background: linear-gradient(180deg,rgba(0,0,0,0.22),rgba(0,0,0,0.12) 60%,transparent 100%);
    z-index: -1;
}

.header-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
    opacity: 0.12;
}

.header-bg .grid {
    position: absolute;
    width: 100%;
    height: 100%;
    background-image: 
        linear-gradient(rgba(255,255,255,0.06) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,0.06) 1px, transparent 1px);
    background-size: 32px 32px;
}

.header-bg .circles {
    position: absolute;
    width: 100%;
    height: 100%;
}

.header-bg .circle {
    position: absolute;
    border-radius: 50%;
    background: rgba(255,255,255,0.06);
}

.circle-1 {
    width: 320px;
    height: 320px;
    top: -100px;
    right: -60px;
}

.circle-2 {
    width: 180px;
    height: 180px;
    bottom: -60px;
    left: 12%;
}

.header h1 {
    font-size: 3.2rem;
    margin-bottom: 18px;
    font-weight: 800;
    text-shadow: 0 2px 10px rgba(0,0,0,0.18), 0 4px 24px rgba(0,0,0,0.10);
    letter-spacing: 1px;
    opacity: 1;
}

.header p {
    font-size: 1.6rem;
    margin-bottom: 36px;
    font-weight: 500;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
    opacity: 1;
    text-shadow: 0 1px 6px rgba(0,0,0,0.12);
}

.section {
    background: var(--card-bg);
    margin: 30px 0;
    padding: 36px 28px;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}

.section h2 {
    color: var(--klein-blue);
    margin-bottom: 30px;
    font-size: 2.2em;
    text-align: center;
    position: relative;
    font-weight: 700;
    padding-bottom: 16px;
}

.section h2::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    background: var(--accent-color);
    border-radius: 2px;
}

/* 打卡护照样式 */
.passport-container {
    background: var(--card-bg);
    padding: 30px;
    border-radius: 15px;
    margin: 20px 0;
    border: 1px solid rgba(0, 47, 167, 0.1);
}

.passport-header {
    text-align: center;
    margin-bottom: 30px;
}

.passport-header h3 {
    color: #667eea;
    font-size: 1.8em;
    margin-bottom: 10px;
}

.passport-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.passport-card {
    background: var(--card-bg);
    padding: 25px;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    text-align: center;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    border: 1px solid rgba(0, 47, 167, 0.06);
}

.passport-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 5px;
    background: var(--accent-color);
}

.passport-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-hover);
}

.mountain-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 20px;
    background: var(--klein-blue);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 2em;
    box-shadow: 0 8px 20px rgba(0, 47, 167, 0.2);
    position: relative;
    overflow: hidden;
    transition: all 0.3s ease;
}

.mountain-icon::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 30% 30%, rgba(255, 255, 255, 0.2), transparent 60%);
}

.mountain-icon .icon-svg {
    width: 40px;
    height: 40px;
    margin: 0;
}

.passport-card:hover .mountain-icon {
    transform: scale(1.05);
    box-shadow: 0 12px 25px rgba(0, 47, 167, 0.25);
}

.passport-card h4 {
    color: #667eea;
    font-size: 1.5em;
    margin-bottom: 10px;
}

.location {
    color: var(--text-secondary);
    font-size: 1.1em;
    margin-bottom: 8px;
}

.date {
    color: var(--text-tertiary);
    font-size: 1em;
    margin-bottom: 15px;
}

.stamp-area {
    background: rgba(245, 248, 255, 0.6);
    border: 2px dashed rgba(0, 47, 167, 0.15);
    padding: 20px;
    margin: 15px 0;
    border-radius: 10px;
    font-size: 1.2em;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.stamp-area:hover {
    background: rgba(245, 248, 255, 0.9);
    border-color: var(--klein-blue-light);
    color: var(--klein-blue);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0, 47, 167, 0.1);
}

.stamp-area.stamped {
    background: var(--klein-blue);
    color: white;
    border-color: var(--klein-blue-light);
    border-style: solid;
}

.challenge {
    background: var(--section-bg);
    padding: 18px;
    border-radius: 12px;
    margin-top: 24px;
    font-size: 0.95em;
    color: var(--text-color);
    border: 1px solid rgba(0, 47, 167, 0.06);
    font-weight: bold;
}

/* 朋友圈攻略样式 */
.social-plan {
    display: grid;
    gap: 25px;
}

.day-post {
    background: var(--card-bg);
    color: var(--text-color);
    padding: 25px;
    border-radius: 15px;
    box-shadow: var(--shadow);
    border: 1px solid rgba(0, 47, 167, 0.1);
}

.day-post.special-post {
    background: var(--special-gradient);
    color: white;
}

.post-header {
    display: flex;
    align-items: center;
    margin-bottom: 20px;
    gap: 15px;
}

.post-day {
    background: rgba(0, 47, 167, 0.1);
    padding: 8px 15px;
    border-radius: 20px;
    font-weight: bold;
    font-size: 0.9em;
    color: var(--klein-blue);
    box-shadow: 0 2px 8px rgba(0, 47, 167, 0.08);
}

.day-post.special-post .post-day {
    background: rgba(255, 255, 255, 0.25);
    color: white;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.post-title {
    font-size: 1.3em;
    font-weight: bold;
    color: var(--klein-blue);
}

.day-post.special-post .post-title {
    color: white;
}

.post-content {
    background: rgba(255, 255, 255, 0.05);
    padding: 20px;
    border-radius: var(--radius);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
}

.day-post:not(.special-post) .post-content {
    background: rgba(0, 47, 167, 0.03);
    border: 1px solid rgba(0, 47, 167, 0.08);
}

.post-images {
    margin-bottom: 15px;
    font-size: 0.95em;
    opacity: 0.9;
    padding: 10px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    display: inline-block;
}

.day-post:not(.special-post) .post-images {
    background: rgba(0, 47, 167, 0.05);
}

.post-text {
    line-height: 1.8;
}

.post-text strong {
    display: block;
    margin-bottom: 8px;
    color: var(--accent-color);
}

.day-post:not(.special-post) .post-text strong {
    color: var(--klein-blue);
}

.icon-svg {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    vertical-align: middle;
    margin-right: 8px;
    width: 24px;
    height: 24px;
    flex-shrink: 0;
}

.icon-svg svg {
    width: 100%;
    height: 100%;
    stroke-width: 2;
    stroke-linecap: round;
    stroke-linejoin: round;
    fill: none;
    stroke: white;
}

/* 导航按钮 */
.nav-button {
    position: fixed;
    top: 20px;
    left: 20px;
    background: rgba(255,255,255,0.9);
    color: var(--klein-blue);
    padding: 14px 28px;
    border-radius: 25px;
    text-decoration: none;
    font-weight: 600;
    box-shadow: 0 8px 20px rgba(0, 47, 167, 0.15);
    transition: all 0.3s ease;
    z-index: 1000;
    letter-spacing: 0.5px;
    font-size: 1.05em;
}

.nav-button:hover {
    background: white;
    transform: translateY(-3px);
    box-shadow: 0 12px 28px rgba(0, 47, 167, 0.25);
}

/* 底部返回按钮 */
.bottom-nav-button {
    display: block;
    position: fixed;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    background: rgba(255,255,255,0.9);
    color: var(--klein-blue);
    padding: 14px 28px;
    border-radius: 25px;
    text-decoration: none;
    font-weight: 600;
    box-shadow: 0 8px 20px rgba(0, 47, 167, 0.15);
    transition: all 0.3s ease;
    letter-spacing: 0.5px;
    font-size: 1.05em;
    text-align: center;
    z-index: 1000;
}

.bottom-nav-button:hover {
    background: white;
    transform: translateX(-50%) translateY(-3px);
    box-shadow: 0 12px 28px rgba(0, 47, 167, 0.25);
}

/* 响应式设计 */
@media (max-width: 768px) {
    .container {
        padding: 20px 16px 32px 16px;
    }
    
    .header {
        padding: 40px 0 60px 0;
    }
    
    .header h1 {
        font-size: 2.4rem;
    }
    
    .header p {
        font-size: 1.3rem;
    }
    
    .section {
        padding: 24px 20px;
        margin: 24px 0;
    }
    
    .passport-grid {
        grid-template-columns: 1fr;
    }
    
    .mountain-icon {
        width: 80px;
        height: 80px;
        font-size: 2.2em;
    }
    
    .post-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
    }
}

/* 详细行程安排现在使用budget样式，无需额外CSS */

.day-summary {
    color: var(--text-color);
    font-size: 0.95em;
    line-height: 1.6;
    margin-bottom: 16px;
}

.day-highlights {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.highlight-tag {
    background: rgba(0, 47, 167, 0.1);
    color: var(--klein-blue);
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.85em;
    font-weight: 500;
}

/* 详细行程安排响应式样式已移除，使用budget样式的响应式设计 */