/* ========== GLOBAL RESET & VARIABLES ========== */
:root {
    --bg-color: #ffffff;
    --surface-color: #f9f9f9;
    --card-bg: #ffffff;
    --text-primary: #1e1e1e;
    --text-secondary: #5e5e5e;
    --border-color: #e0e0e0;
    --accent: #2ceaff;
    --accent-blue: #0707f1;
    --accent-hover: #008c8c;
    --shadow-sm: 0 2px 6px rgba(0,0,0,0.05);
    --navbar-bg: rgba(255,255,255,0.85);
    --glass-blur: blur(12px);
}

body.dark {
    --bg-color: #121212;
    --surface-color: #1e1e1e;
    --card-bg: #2d2d2d;
    --text-primary: #e0e0e0;
    --text-secondary: #b0b0b0;
    --border-color: #3a3a3a;
    --accent: #2ceaff;
    --accent-blue: #0707f1;
    --accent-hover: #48b5b5;
    --navbar-bg: rgba(30,30,30,0.85);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', 'Roboto', system-ui, -apple-system, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-primary);
    line-height: 1.5;
    transition: background-color 0.2s ease, color 0.2s ease;
}

/* 直角现代风格，无圆角 */
a, button, .card, .navbar, .glass-panel, input, textarea {
    border-radius: 0px;
}

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 2rem 1.5rem;
}

/* 导航栏 */
.navbar {
    backdrop-filter: var(--glass-blur);
    background: var(--navbar-bg);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 100;
}

.nav-container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0.75rem 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
}

.logo-area {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.logo-img {
    width: 40px;
    height: 40px;
    object-fit: contain;
}

.logo-text {
    font-weight: 600;
    font-size: 1.25rem;
    letter-spacing: -0.3px;
}

.nav-links {
    display: flex;
    gap: 1.8rem;
    align-items: center;
    flex-wrap: wrap;
}

.nav-link {
    color: var(--text-primary);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.2s;
    padding: 0.25rem 0;
    border-bottom: 2px solid transparent;
}

.nav-link:hover {
    color: var(--accent);
    border-bottom-color: var(--accent);
}

.theme-btn {
    background: transparent;
    border: 1px solid var(--border-color);
    font-size: 1.2rem;
    cursor: pointer;
    padding: 0.3rem 0.6rem;
    color: var(--text-primary);
    transition: all 0.2s;
}

.theme-btn:hover {
    background: var(--accent);
    border-color: var(--accent);
    color: white;
}

/* 卡片样式 */
.card, .glass-panel {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    padding: 1.5rem;
    box-shadow: var(--shadow-sm);
    transition: transform 0.1s ease;
}

.cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.8rem;
    margin: 2rem 0;
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    margin-bottom: 1rem;
}

.status-badge {
    background: var(--accent);
    color: white;
    padding: 0.2rem 0.8rem;
    font-size: 0.8rem;
    font-weight: 600;
}

.status-highlight {
    border-left: 4px solid var(--accent);
}

.btn-primary {
    display: inline-block;
    background: var(--accent);
    color: white;
    padding: 0.6rem 1.2rem;
    text-decoration: none;
    font-weight: 600;
    border: none;
    cursor: pointer;
    transition: background 0.2s;
    text-align: center;
}

.btn-primary:hover {
    background: var(--accent-hover);
}

.link-arrow {
    color: var(--accent);
    text-decoration: none;
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
}

.link-arrow:hover {
    text-decoration: underline;
}

/* 状态卡片内样式 */
.status-summary {
    margin: 1rem 0;
}

.status-tag {
    display: inline-block;
    background: var(--accent-blue);
    color: white;
    padding: 0.2rem 1rem;
    font-size: 0.85rem;
    margin-bottom: 1rem;
}

.stats-row {
    margin: 0.8rem 0;
    display: flex;
    align-items: baseline;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.stat-number {
    font-size: 2.2rem;
    font-weight: 700;
    color: var(--accent);
}

.stat-update {
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.progress-text {
    margin: 1rem 0;
    font-weight: 500;
}

/* 流程预览 */
.timeline-preview {
    margin: 2rem 0;
    text-align: center;
}

.steps-mini {
    display: flex;
    justify-content: space-between;
    margin: 1.5rem 0;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.step {
    flex: 1;
    background: var(--surface-color);
    padding: 0.5rem;
    border: 1px solid var(--border-color);
    text-align: center;
    font-weight: 500;
}

.active-step {
    background: var(--accent);
    color: white;
    border-color: var(--accent);
}

/* 页脚 */
.footer {
    border-top: 1px solid var(--border-color);
    margin-top: 3rem;
    padding: 2rem 1.5rem;
    text-align: center;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

/* 响应式 */
@media (max-width: 768px) {
    .nav-container {
        flex-direction: column;
        gap: 1rem;
    }
    .nav-links {
        justify-content: center;
        gap: 1rem;
    }
    .container {
        padding: 1rem;
    }
    .steps-mini {
        flex-direction: column;
    }
}

/* 状态页折叠组件 */
.collapsible-section {
    border: 1px solid var(--border-color);
    margin-bottom: 1rem;
    background: var(--card-bg);
}

.collapsible-header {
    padding: 1rem;
    cursor: pointer;
    background: var(--surface-color);
    font-weight: 600;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid transparent;
}

.collapsible-header.active {
    border-bottom-color: var(--border-color);
    background: var(--accent);
    color: white;
}

.collapsible-content {
    padding: 1rem;
    display: none;
}

.collapsible-content.open {
    display: block;
}

.step-marker {
    font-size: 1.2rem;
}

/* 表格样式 */
.data-table {
    width: 100%;
    border-collapse: collapse;
    margin: 1rem 0;
}
.data-table th, .data-table td {
    border: 1px solid var(--border-color);
    padding: 0.6rem;
    text-align: left;
}
.data-table th {
    background: var(--surface-color);
}

/* 隐私政策正文样式 */
.privacy-content {
    max-width: 900px;
    margin: 0 auto;
    line-height: 1.7;
}

.privacy-content h2 {
    margin: 1.5rem 0 0.5rem;
}

.privacy-content p {
    margin-bottom: 1rem;
}

body {
    line-height: 1.6;  /* 提升整体行距 */
}

.card, .privacy-content {
    line-height: 1.55;
}

/* 返回首页链接 */
.back-home {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    margin: 1rem 0 1.5rem 0;
    font-weight: 500;
    color: var(--accent);
    text-decoration: none;
    font-size: 0.95rem;
    border-bottom: 1px solid transparent;
    transition: 0.2s;
}
.back-home:hover {
    border-bottom-color: var(--accent);
}

/* 数据强调 */
.highlight-number {
    font-size: 2.2rem;
    font-weight: 800;
    color: var(--accent);
    display: inline-block;
    margin-right: 0.3rem;
    line-height: 1.2;
}
.stat-item {
    margin: 1rem 0;
    padding: 0.5rem;
    background: var(--surface-color);
    border-left: 3px solid var(--accent);
}
.stat-label {
    font-weight: 600;
    display: block;
    margin-bottom: 0.2rem;
}
.stat-value {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--accent-blue);
}