/* 康析 App - 官方网站公共样式 */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

:root {
    --primary: #2563eb;
    --primary-hover: #1d4ed8;
    --primary-light: #eff6ff;
    --secondary: #10b981;
    --text-main: #0f172a;
    --text-muted: #475569;
    --text-light: #94a3b8;
    --bg-main: #f8fafc;
    --bg-card: rgba(255, 255, 255, 0.85);
    --border-color: #e2e8f0;
    --border-radius: 16px;
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 20px -2px rgba(148, 163, 184, 0.12), 0 2px 8px -1px rgba(148, 163, 184, 0.08);
    --shadow-lg: 0 20px 25px -5px rgba(148, 163, 184, 0.15), 0 10px 10px -5px rgba(148, 163, 184, 0.04);
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* 基础重置 */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html, body {
    font-family: var(--font-sans);
    background-color: var(--bg-main);
    color: var(--text-main);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    scroll-behavior: smooth;
}

/* 背景环境光源 */
.bg-glow {
    position: fixed;
    top: -10%;
    left: 20%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(37, 99, 235, 0.08) 0%, rgba(255, 255, 255, 0) 70%);
    z-index: -1;
    pointer-events: none;
}

.bg-glow-2 {
    position: fixed;
    bottom: -10%;
    right: 10%;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(16, 185, 129, 0.06) 0%, rgba(255, 255, 255, 0) 70%);
    z-index: -1;
    pointer-events: none;
}

/* 导航栏 */
.header {
    position: sticky;
    top: 0;
    background: rgba(255, 255, 255, 0.7);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-color);
    z-index: 100;
    transition: var(--transition);
}

.navbar {
    max-width: 1200px;
    margin: 0 auto;
    padding: 16px 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 22px;
    font-weight: 700;
    color: var(--primary);
    text-decoration: none;
}

.logo svg {
    width: 32px;
    height: 32px;
    fill: var(--primary);
}

.nav-links {
    display: flex;
    gap: 32px;
    list-style: none;
    align-items: center;
}

.nav-links a {
    color: var(--text-muted);
    text-decoration: none;
    font-weight: 500;
    font-size: 15px;
    transition: var(--transition);
}

.nav-links a:hover, .nav-links a.active {
    color: var(--primary);
}

.nav-btn {
    background-color: var(--primary);
    color: #ffffff !important;
    padding: 8px 20px;
    border-radius: 9999px;
    font-weight: 600 !important;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.nav-btn:hover {
    background-color: var(--primary-hover);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.2);
}

/* 页脚 */
.footer {
    background-color: #ffffff;
    border-top: 1px solid var(--border-color);
    padding: 60px 24px 30px;
    margin-top: 80px;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: 48px;
    margin-bottom: 40px;
}

.footer-info .logo {
    margin-bottom: 16px;
}

.footer-info p {
    color: var(--text-muted);
    font-size: 14px;
    max-width: 300px;
}

.footer-section h4 {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-main);
    margin-bottom: 20px;
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: 12px;
}

.footer-section ul li a {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 14px;
    transition: var(--transition);
}

.footer-section ul li a:hover {
    color: var(--primary);
}

.footer-contact p {
    color: var(--text-muted);
    font-size: 14px;
    margin-bottom: 8px;
}

.footer-bottom {
    max-width: 1200px;
    margin: 0 auto;
    padding-top: 30px;
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: var(--text-light);
    font-size: 13px;
    flex-wrap: wrap;
    gap: 16px;
}

/* 按钮规范 */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 28px;
    border-radius: var(--border-radius);
    font-size: 16px;
    font-weight: 600;
    border: none;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
}

.btn-primary {
    background-color: var(--primary);
    color: #ffffff;
    box-shadow: 0 4px 14px rgba(37, 99, 235, 0.2);
}

.btn-primary:hover {
    background-color: var(--primary-hover);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(37, 99, 235, 0.3);
}

.btn-outline {
    background-color: transparent;
    color: var(--text-main);
    border: 1.5px solid var(--border-color);
}

.btn-outline:hover {
    background-color: rgba(148, 163, 184, 0.05);
    border-color: var(--text-muted);
    transform: translateY(-2px);
}

/* 页面内容通用布局 */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 40px 24px;
}

.card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-md);
    padding: 32px;
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    transition: var(--transition);
}

.card:hover {
    box-shadow: var(--shadow-lg);
}

/* 协议文本格式规范 */
.doc-header {
    text-align: center;
    margin-bottom: 40px;
}

.doc-header h1 {
    font-size: 32px;
    font-weight: 700;
    color: var(--text-main);
    margin-bottom: 12px;
}

.doc-header p {
    color: var(--text-muted);
    font-size: 15px;
}

.doc-body {
    max-width: 850px;
    margin: 0 auto;
    background-color: #ffffff;
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
    padding: 48px;
}

.doc-body h2 {
    font-size: 20px;
    font-weight: 600;
    color: var(--text-main);
    margin: 32px 0 16px;
    padding-bottom: 8px;
    border-bottom: 1.5px solid var(--border-color);
}

.doc-body h2:first-of-type {
    margin-top: 0;
}

.doc-body h3 {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-main);
    margin: 20px 0 12px;
}

.doc-body p, .doc-body li {
    color: var(--text-muted);
    font-size: 15px;
    line-height: 1.7;
    margin-bottom: 14px;
}

.doc-body ul, .doc-body ol {
    margin-left: 20px;
    margin-bottom: 16px;
}

.doc-body strong {
    color: var(--text-main);
}

/* 表单与交互输入框 */
.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-muted);
    margin-bottom: 8px;
}

.input-wrapper {
    position: relative;
    display: flex;
}

.form-input {
    width: 100%;
    padding: 12px 16px;
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
    font-size: 15px;
    font-family: var(--font-sans);
    transition: var(--transition);
    outline: none;
}

.form-input:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

.form-input::placeholder {
    color: var(--text-light);
}

.input-btn {
    position: absolute;
    right: 8px;
    top: 6px;
    bottom: 6px;
    background-color: var(--primary);
    color: #ffffff;
    border: none;
    border-radius: calc(var(--border-radius) - 6px);
    padding: 0 16px;
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

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

.input-btn:disabled {
    background-color: var(--border-color);
    color: var(--text-light);
    cursor: not-allowed;
}

/* 消息提示框 */
.alert {
    padding: 14px 16px;
    border-radius: var(--border-radius);
    font-size: 14px;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 12px;
}

.alert-error {
    background-color: #fef2f2;
    border: 1px solid #fee2e2;
    color: #b91c1c;
}

.alert-success {
    background-color: #ecfdf5;
    border: 1px solid #d1fae5;
    color: #047857;
}

.alert-info {
    background-color: #f0f9ff;
    border: 1px solid #e0f2fe;
    color: #0369a1;
}

/* 响应式媒体查询 */
@media (max-width: 992px) {
    .footer-content {
        grid-template-columns: 1fr 1fr;
        gap: 32px;
    }
}

@media (max-width: 768px) {
    .navbar {
        flex-direction: column;
        gap: 16px;
        padding: 16px;
    }
    
    .nav-links {
        gap: 16px;
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 32px;
    }
    
    .doc-body {
        padding: 24px;
    }
}