:root {
    --color-primary: #009966;
    --color-primary-dark: #007a55;
    --color-primary-bright: #00bc7d;
    --color-bg-dark: #0f172a;
    --color-bg-page: #f9fafb;
    --color-text-dark: #0f172b;
    --color-text-primary: #364153;
    --color-text-secondary: #45556c;
    --color-text-muted: #99a1af;
    --color-white: #ffffff;
    --color-border: #e5e7eb;
    --color-border-light: #f3f4f6;
    --color-green-light-bg: #ecfdf5;
    --font-family: 'Inter', sans-serif;
}

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

body {
    font-family: var(--font-family);
    background-color: var(--color-bg-page);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.secondary-nav {
    background-color: var(--color-white);
    border-bottom: 1px solid var(--color-border);
}

.nav-container {
    max-width: 1504px;
    margin: 0 auto;
    padding: 0 135px;
    display: flex;
    gap: 32px;
}

.nav-item {
    font-size: 16px;
    font-weight: 500;
    color: var(--color-text-secondary);
    text-decoration: none;
    padding: 24px 0;
    border-bottom: 2px solid transparent;
    transition: all 0.2s;
}

.nav-item:hover {
    color: var(--color-primary);
}

.nav-item.active {
    color: var(--color-primary);
    font-weight: 600;
    border-bottom-color: var(--color-primary);
}

.main-content {
    min-height: calc(100vh - 84px - 72px - 296px);
    padding: 32px 0 48px;
}

.content-container {
    max-width: 1504px;
    margin: 0 auto;
    padding: 0 136px;
    display: flex;
    flex-direction: column;
    gap: 32px;
}

.page-header {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.page-title {
    font-size: 30px;
    font-weight: 700;
    letter-spacing: -0.75px;
    line-height: 36px;
    color: var(--color-text-dark);
}

.page-description {
    font-size: 16px;
    font-weight: 400;
    color: var(--color-text-secondary);
}

.agreements-layout {
    display: flex;
    gap: 24px;
    align-items: flex-start;
}

.agreements-sidebar {
    width: 280px;
    min-width: 280px;
    position: sticky;
    top: 112px;
}

.agreements-nav {
    background-color: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: 16px;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.agreement-tab {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px 20px;
    background: none;
    border: none;
    border-bottom: 1px solid var(--color-border-light);
    font-family: var(--font-family);
    font-size: 14px;
    font-weight: 500;
    color: var(--color-text-secondary);
    cursor: pointer;
    transition: all 0.2s ease;
    text-align: left;
    width: 100%;
}

.agreement-tab:last-child {
    border-bottom: none;
}

.agreement-tab:hover {
    background-color: var(--color-bg-page);
    color: var(--color-text-dark);
}

.agreement-tab.active {
    background-color: var(--color-green-light-bg);
    color: var(--color-primary);
    font-weight: 600;
    border-left: 3px solid var(--color-primary);
}

.agreement-tab.active .tab-icon {
    color: var(--color-primary);
}

.tab-icon {
    width: 18px;
    height: 18px;
    min-width: 18px;
    color: var(--color-text-muted);
    transition: color 0.2s ease;
}

.agreements-content {
    flex: 1;
    min-width: 0;
}

.agreement-panel {
    display: none;
}

.agreement-panel.active {
    display: block;
}

.agreement-card {
    background-color: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: 16px;
    overflow: hidden;
}

.agreement-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 24px 32px;
    background-color: var(--color-bg-page);
    border-bottom: 1px solid var(--color-border);
}

.agreement-title {
    font-size: 20px;
    font-weight: 700;
    color: var(--color-text-dark);
    letter-spacing: -0.5px;
}

.agreement-date {
    font-size: 13px;
    font-weight: 500;
    color: var(--color-text-muted);
    white-space: nowrap;
}

.agreement-body {
    padding: 32px;
    line-height: 1.7;
}

.agreement-body h3 {
    font-size: 16px;
    font-weight: 600;
    color: var(--color-text-dark);
    margin-top: 28px;
    margin-bottom: 12px;
    padding-bottom: 8px;
    border-bottom: 1px solid var(--color-border-light);
}

.agreement-body h3:first-child {
    margin-top: 0;
}

.agreement-body h4 {
    font-size: 14px;
    font-weight: 600;
    color: var(--color-text-primary);
    margin-top: 20px;
    margin-bottom: 8px;
}

.agreement-body p {
    font-size: 14px;
    font-weight: 400;
    color: var(--color-text-primary);
    margin-bottom: 12px;
    line-height: 1.7;
}

.agreement-body ul,
.agreement-body ol {
    margin: 12px 0;
    padding-left: 24px;
}

.agreement-body li {
    font-size: 14px;
    font-weight: 400;
    color: var(--color-text-primary);
    margin-bottom: 8px;
    line-height: 1.6;
}

.agreement-body li::marker {
    color: var(--color-primary);
}

.agreement-body strong {
    font-weight: 600;
    color: var(--color-text-dark);
}

.sidebar-toggle {
    display: none;
    align-items: center;
    gap: 8px;
    padding: 12px 20px;
    background-color: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: 12px;
    font-family: var(--font-family);
    font-size: 14px;
    font-weight: 600;
    color: var(--color-text-dark);
    cursor: pointer;
    width: 100%;
    transition: all 0.2s ease;
}

.sidebar-toggle:hover {
    border-color: var(--color-primary);
}

.sidebar-toggle .toggle-icon {
    width: 18px;
    height: 18px;
    transition: transform 0.2s ease;
}

.sidebar-toggle.open .toggle-icon {
    transform: rotate(180deg);
}

@media (max-width: 1400px) {
    .nav-container {
        padding: 0 32px;
    }

    .content-container {
        padding: 0 32px;
    }
}

@media (max-width: 1024px) {
    .agreements-sidebar {
        width: 240px;
        min-width: 240px;
    }

    .agreement-tab {
        padding: 14px 16px;
        font-size: 13px;
    }

    .agreement-header {
        padding: 20px 24px;
    }

    .agreement-body {
        padding: 24px;
    }
}

@media (max-width: 768px) {
    .nav-container {
        overflow-x: auto;
    }

    .nav-item {
        white-space: nowrap;
    }

    .agreements-layout {
        flex-direction: column;
    }

    .agreements-sidebar {
        width: 100%;
        min-width: 100%;
        position: static;
    }

    .agreements-nav {
        display: none;
        border-radius: 12px;
    }

    .agreements-nav.open {
        display: flex;
    }

    .sidebar-toggle {
        display: flex;
    }

    .agreement-tab.active {
        border-left: none;
        border-left: 3px solid var(--color-primary);
    }

    .agreement-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 8px;
        padding: 20px;
    }

    .agreement-body {
        padding: 20px;
    }

    .agreement-body h3 {
        font-size: 15px;
        margin-top: 24px;
    }
}

@media (max-width: 480px) {
    .content-container {
        padding: 0 16px;
    }

    .page-title {
        font-size: 24px;
    }

    .agreement-title {
        font-size: 18px;
    }
}