:root {
    /* AgileCore Brand Colors */
    --primary-color: #CB2320;
    --secondary-green: #008A4C;
    --secondary-green-hover: #8DC556;
    --accent-teal: #1FB8CD;
    --accent-teal-hover: #1A9BB0;

    /* Neutral Colors */
    --color-white: #ffffff;
    --color-gray-50: #f9fafb;
    --color-gray-100: #f3f4f6;
    --color-gray-200: #e5e7eb;
    --color-gray-300: #d1d5db;
    --color-gray-400: #9ca3af;
    --color-gray-500: #6b7280;
    --color-gray-600: #4b5563;
    --color-gray-700: #374151;
    --color-gray-800: #1f2937;
    --color-gray-900: #111827;

    /* Semantic Colors */
    --color-background: var(--color-white);
    --color-surface: var(--color-gray-50);
    --color-text: var(--color-gray-900);
    --color-text-secondary: var(--color-gray-600);
    --color-border: var(--color-gray-200);
    --color-success: var(--secondary-green);
    --color-primary: var(--primary-color);

    /* Typography */
    --font-family-base: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    --font-size-4xl: 2.25rem;
    --font-size-5xl: 3rem;

    /* Spacing */
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.25rem;
    --space-6: 1.5rem;
    --space-7: 1.75rem;
    --space-8: 2rem;
    --space-9: 2.25rem;
    --space-10: 2.5rem;
    --space-12: 3rem;
    --space-16: 4rem;
    --space-20: 5rem;
    --space-24: 6rem;

    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;

    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);

    /* Animation */
    --transition-fast: 150ms ease-in-out;
    --transition-normal: 300ms ease-in-out;
}

@font-face {
    font-family: 'Inter';
    src: url('/static/fonts/Inter.woff2') format('woff2');
}

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

body {
    font-family: var(--font-family-base);
    line-height: 1.6;
    color: var(--color-text);
    background-color: var(--color-background);
}

/* Typography */
h1,
h2,
h3,
h4,
h5,
h6 {
    font-weight: 500;
    line-height: 1.2;
}

h1 {
    font-size: var(--font-size-5xl);
}

h2 {
    font-size: var(--font-size-4xl);
}

h3 {
    font-size: var(--font-size-3xl);
}

h4 {
    font-size: var(--font-size-2xl);
}

h5 {
    font-size: var(--font-size-xl);
}

h6 {
    font-size: var(--font-size-lg);
}

p {
    color: var(--color-text-secondary);
}

/* Container */
.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--space-6);
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--color-border);
    z-index: 1000;
    transition: var(--transition-normal);
}

.navbar.scrolled {
    box-shadow: var(--shadow-sm);
}

.navbar-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-4) 0;
}

.logo {
    display: flex;
    flex-direction: column;
    text-decoration: none;
    width: 200px;
}

.logo img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.logo-text {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--color-primary);
}

.logo-tagline {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    margin-top: -var(--space-1);
}

.navbar-content ul {
    display: flex;
    list-style: none;
    gap: 45px;
    align-items: center;
}

/* Desktop nav dropdown (News categories) */
.nav-dropdown {
    position: relative;
}

/* Hover bridge between toggle and menu (does not affect layout) */
.nav-dropdown::after {
    content: '';
    position: absolute;
    left: -12px;
    right: -12px;
    top: 100%;
    height: 14px;
}

.nav-dropdown-toggle {
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.nav-dropdown-menu {
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%);
    margin-top: 14px;
    min-width: 220px;
    padding: 10px;
    border-radius: 16px;
    background: rgba(255, 255, 255, 0.98);
    border: 1px solid var(--color-border);
    box-shadow: var(--shadow-lg);
    display: none;
    z-index: 1100;
}

.nav-dropdown-item {
    display: block;
    padding: 10px 12px;
    border-radius: 12px;
    text-decoration: none;
    color: var(--color-text);
    font-weight: 500;
    font-size: 14px;
    white-space: nowrap;
    transition: background-color var(--transition-fast), color var(--transition-fast);
}

.nav-dropdown-item:hover {
    background: rgba(0, 138, 76, 0.08);
    color: var(--secondary-green);
}

/* Hover & keyboard open */
.nav-dropdown:hover .nav-dropdown-menu,
.nav-dropdown:focus-within .nav-dropdown-menu,
.nav-dropdown.is-open .nav-dropdown-menu {
    display: block;
}

.navbar-toggle {
    display: none;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    margin-left: var(--space-4);
    border-radius: var(--radius-md);
    border: 1px solid rgba(0, 0, 0, 0.08);
    background-color: var(--color-white);
    cursor: pointer;
    transition: background-color var(--transition-fast), border-color var(--transition-fast);
}

.navbar-toggle span {
    width: 22px;
    height: 2px;
    background-color: var(--color-text);
    display: block;
    transition: transform var(--transition-fast), opacity var(--transition-fast);
}

.navbar-toggle span:nth-child(2) {
    margin: 6px 0;
}

.navbar-toggle.active span:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
}

.navbar-toggle.active span:nth-child(2) {
    opacity: 0;
}

.navbar-toggle.active span:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
}

.mobile-nav-backdrop {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.35);
    z-index: 1200;
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-fast), visibility var(--transition-fast);
}

.mobile-nav-backdrop.active {
    opacity: 1;
    visibility: visible;
}

.mobile-nav {
    position: fixed;
    top: 0;
    right: 0;
    width: 85%;
    max-width: 360px;
    height: 100vh;
    background: var(--color-white);
    box-shadow: var(--shadow-lg);
    transform: translateX(100%);
    transition: transform var(--transition-fast);
    z-index: 1210;
    display: flex;
    flex-direction: column;
}

.mobile-nav.active {
    transform: translateX(0);
}

.mobile-nav-inner {
    height: 100%;
    display: flex;
    flex-direction: column;
    padding: 30px 20px;
}

.mobile-nav-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--space-6);
}

.mobile-nav-header .logo {
    width: 150px;
}

.mobile-nav-close {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: 1px solid rgba(0, 0, 0, 0.08);
    background: transparent;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    position: relative;
}

.mobile-nav-close span {
    position: absolute;
    width: 15px;
    height: 2px;
    background: var(--color-text);
    transition: transform var(--transition-fast);
}

.mobile-nav-close span:first-child {
    transform: rotate(45deg);
}

.mobile-nav-close span:last-child {
    transform: rotate(-45deg);
}

.mobile-nav-body {
    display: flex;
    flex-direction: column;
    gap: var(--space-6);
    flex: 1;
    overflow-y: auto;
    padding-bottom: var(--space-8);
}

.mobile-nav-body ul {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.mobile-nav-body ul li {
    border-bottom: 1px solid var(--color-border);
    padding-bottom: var(--space-3);
}

.mobile-nav-body ul li:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

.mobile-nav-body ul .nav-link,
.mobile-nav-body ul .btn {
    display: block;
    width: 100%;
}

/* Mobile: make dropdown expand inline (no overlay) */
.mobile-nav-body .nav-dropdown::after {
    content: none;
}

.mobile-nav-body .nav-dropdown-toggle {
    width: 100%;
    justify-content: space-between;
}

.mobile-nav-body .nav-dropdown-menu {
    position: static;
    left: auto;
    top: auto;
    transform: none;
    margin-top: 12px;
    min-width: 0;
    width: 100%;
    box-shadow: none;
    border-radius: 14px;
    background: rgba(0, 0, 0, 0.02);
    display: none;
    z-index: auto;
}

.mobile-nav-body .nav-dropdown.is-open .nav-dropdown-menu {
    display: block;
}

.mobile-nav-body .nav-dropdown-item {
    white-space: normal;
}

.mobile-nav-cta {
    text-align: center;
    font-size: var(--font-size-lg);
}

body.mobile-nav-open {
    overflow: hidden;
}

.nav-link {
    text-decoration: none;
    color: var(--color-text);
    font-weight: 500;
    transition: var(--transition-fast);
    cursor: pointer;
    font-size: 15px;
}

.nav-link.active {
    color: var(--secondary-green);
}

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

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    padding: 12px var(--space-6);
    border-radius: var(--radius-md);
    font-weight: 600;
    text-decoration: none;
    transition: var(--transition-fast);
    cursor: pointer;
    border: none;
    font-size: var(--font-size-base);
}

.btn-primary {
    background: var(--color-primary);
    color: var(--color-white);
    position: relative;
    overflow: hidden;
    text-align: center;
    justify-content: center;
}

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

.btn-primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s;
}

.btn-primary:hover::before {
    left: 100%;
}

.btn-secondary {
    background: var(--secondary-green);
    color: var(--color-white);
}

.btn-secondary:hover {
    background: var(--secondary-green-hover);
}

.btn-outline {
    background: transparent;
    color: var(--color-primary);
    border: 2px solid var(--color-primary);
}

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

/* Button utilities */
.btn-block {
    width: 100%;
}

/* Outline button for dark backgrounds */
.btn-outline-white {
    background: transparent;
    color: var(--color-white);
    border: 2px solid var(--color-white);
}

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

.btn-lg {
    padding: var(--space-4) var(--space-8);
    font-size: var(--font-size-lg);
}



/* Footer */
.footer {
    background: var(--color-gray-900);
    color: var(--color-white);
    padding: var(--space-16) 0 var(--space-8);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--space-8);
    margin-bottom: var(--space-8);
}

.footer-section h4 {
    color: var(--color-white);
    margin-bottom: var(--space-4);
}

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

.footer-section ul a {
    color: var(--color-gray-300);
    text-decoration: none;
    transition: var(--transition-fast);
    display: block;
    padding: var(--space-1) 0;
}

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

.footer-bottom {
    border-top: 1px solid var(--color-gray-700);
    padding-top: var(--space-6);
    text-align: center;
    color: var(--color-gray-400);
}

.footer-bottom a {
    color: var(--color-text-secondary);
    text-decoration: none;
    transition: var(--transition-fast);
}

.footer-bottom a:hover {
    text-decoration: underline;
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: 2000;
    align-items: center;
    justify-content: center;
}

.modal.show {
    display: flex;
}

.modal-content {
    background: var(--color-white);
    border-radius: var(--radius-lg);
    padding: var(--space-8);
    max-width: 500px;
    width: 90%;
    position: relative;
}

.modal-close {
    position: absolute;
    top: var(--space-4);
    right: var(--space-4);
    background: none;
    border: none;
    font-size: var(--font-size-2xl);
    cursor: pointer;
    color: var(--color-text-secondary);
}

.modal-close:hover {
    color: var(--color-text);
}

/* Mobile Styles */
@media screen and (max-width: 768px) {

    .navbar-content ul {
        display: none !important;
    }

    .navbar-toggle {
        display: inline-flex;
    }
}

/* Scroll animations */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* 
.nav-link-demo {
    font-weight: 700 !important;
    text-decoration: underline !important;
    color: var(--secondary-green) !important;
    margin-right: 20px !important;
    font-size: 18px !important;
} */


/* 回到顶部按钮 */
.scroll-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background-color: var(--primary-color);
    border: none;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 2px 6px rgba(203, 35, 32, 0.4);
    z-index: 1000;
    transition: all 0.3s ease;
    cursor: pointer;
    color: #ffffff;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
}

.scroll-to-top.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.scroll-to-top:hover {
    background-color: rgba(203, 35, 32, 0.9);
    transform: scale(1.05);
    box-shadow: 0 2px 6px rgba(203, 35, 32, 0.5);
}

.scroll-to-top:active {
    transform: translateY(-1px) scale(0.95);
}

.scroll-to-top svg {
    width: 23px;
    height: 23px;
}

.footer-logo {
    width: 180px;
    margin-bottom: 33px;
}

.footer-logo img {
    width: 100%;
    object-fit: cover;
}


@media screen and (max-width: 768px) {
    .navbar-content{
        padding: 10px 15px !important;
    }

    .navbar .container {
        padding: 0 !important;
    }

    .logo {
        width: 130px !important;
    }

    .nav-link {
        font-size: 15px !important;
        margin-right: 0px !important;
        font-weight: 400 !important;
    }


    .footer {
        padding: 40px 0;
    }

    .footer-logo {
        width: 160px !important;
        margin-bottom: 20px !important;
    }

    .footer-section h4 {
        font-size: 16px;
    }

    .footer-section ul a {
        font-size: 14px;
    }

    .footer-bottom {
        font-size: 11px;
    }

    .navbar.past-banner.scrolled {
        width: 100%;
        top: 0;
        border-radius: 0 !important;
        box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1) !important;
        border: none !important;
    }

    .navbar.past-banner.scrolled .navbar-content {
        padding: 18px 24px;
    }


    .scroll-to-top {
        width: 42px;
        height: 42px;
        bottom: 15px;
        right: 20px;
    }

    .scroll-to-top svg {
        width: 18px;
        height: 18px;
    }

    .scroll-to-top:hover {
        transform: scale(1);
    }

    .container{
        padding: 0 15px !important;
    }
}



/* 左侧滚动跟随条 */
.scroll-indicators {
    position: fixed;
    left: 0;
    top: 0;
    width: 100%;
    height: 100vh;
    z-index: 999;
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.scroll-indicators.visible {
    opacity: 1;
}

.scroll-bar {
    position: absolute;
    top: 0;
    left: 0;
    width: 5px;
    height: 0%;
    transition: height 0.08s ease-out;
    box-shadow: 0 0 4px currentColor;
    border-radius: 0 2px 2px 0;
}

.scroll-bar-red {
    background: linear-gradient(180deg, var(--primary-color) 0%, rgba(203, 35, 32, 0.8) 100%);
    color: var(--primary-color);
    z-index: 2;
}

.scroll-bar-green {
    background: linear-gradient(180deg, var(--secondary-green) 0%, rgba(0, 138, 76, 0.8) 100%);
    color: var(--secondary-green);
    left: auto;
    z-index: 1;
    left: 5px;
    width: 7px;
}

.scroll-bar-green-2 {
    background: linear-gradient(180deg, var(--secondary-green) 0%, rgba(0, 138, 76, 0.8) 100%);
    color: var(--secondary-green);
    left: auto;
    z-index: 1;
    right: 0;
    width: 7px;
}



/* WhatsApp 悬浮按钮 */
.whatsapp-float {
    position: fixed;
    bottom: 90px;
    right: 30px;
    width: 50px;
    height: 50px;
    background-color: var(--secondary-green);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 12px rgba(37, 211, 102, 0.4);
    z-index: 1000;
    transition: all 0.3s ease;
    text-decoration: none;
    color: #ffffff;
}

.whatsapp-float:hover {
    background-color: #20BA5A;
    transform: scale(1.1);
    box-shadow: 0 6px 16px rgba(37, 211, 102, 0.5);
}

.whatsapp-float:active {
    transform: scale(0.95);
}

.whatsapp-float svg {
    width: 23px;
    height: 23px;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .whatsapp-float {
        width: 42px;
        height: 42px;
        bottom: 65px;
        right: 20px;
    }

    .whatsapp-float:hover {
        transform: scale(1);
    }

    .whatsapp-float svg {
        width: 18px;
        height: 18px;
    }
}