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

:root {
    --primary-pink: #E81899;
    --text-dark: #1a1a1a;
    --text-gray: #666;
    --text-light: #999;
    --border-color: #e5e5e5;
    --bg-light: #fafafa;
    --bg-white: #ffffff;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Inter', 'Helvetica Neue', Arial, sans-serif;
    color: var(--text-dark);
    background: var(--bg-white);
    overflow-x: hidden;
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    /* background: rgba(255, 255, 255, 0.95); */
    background: transparent;
    backdrop-filter: blur(10px);
    z-index: 1000;
    height: 64px;
    margin-top: 10px;
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 32px;
    height: 100%;
}

.nav-left {
    flex: 0 0 auto;
}

.logo {
    display: flex;
    align-items: center;
    gap: 2px;
    text-decoration: none;
    font-size: 25px;
    font-weight: 700;
    color: var(--text-dark);
    letter-spacing: -1px;
}
.logo span {
    font-weight: 200;
}

.nav-center {
    display: flex;
    align-items: center;
    gap: 8px;
    flex: 1;
    justify-content: center;
}

.nav-item {
    position: relative;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    font-size: 15px;
    color: var(--text-dark);
    background: none;
    border: none;
    cursor: pointer;
    border-radius: 6px;
    transition: all 0.2s ease;
    font-weight: 500;
    text-decoration: none;
}

.nav-link:hover {
    background: var(--bg-light);
}

.nav-link svg {
    transition: transform 0.2s ease;
}

.nav-item.active .nav-link svg {
    transform: rotate(180deg);
}

.nav-item.disabled .nav-link {
    color: var(--text-light);
    opacity: 0.5;
    cursor: not-allowed;
    pointer-events: none;
}

.nav-item.disabled .nav-link:hover {
    background: none;
}

.nav-right {
    display: flex;
    align-items: center;
    gap: 12px;
    flex: 0 0 auto;
}

.social-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    color: var(--text-dark);
    border-radius: 6px;
    transition: all 0.2s ease;
}

.social-icon:hover {
    background: var(--bg-light);
}

/* Mobile Menu Toggle */
.mobile-menu-toggle {
    display: none;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: none;
    border: none;
    color: var(--text-dark);
    cursor: pointer;
    border-radius: 6px;
    transition: all 0.2s ease;
    position: relative;
}

.mobile-menu-toggle:hover {
    background: var(--bg-light);
}

.mobile-menu-toggle .close-icon {
    display: none;
    position: absolute;
}

.mobile-menu-toggle.active .menu-icon {
    display: none;
}

.mobile-menu-toggle.active .close-icon {
    display: block;
}

/* Mobile Menu */
.mobile-menu {
    position: fixed;
    top: 64px;
    left: 0;
    width: 100vw;
    height: calc(100vh - 64px);
    background: #ffffff;
    z-index: 9999;
    display: none;
    overflow-y: auto;
}

.mobile-menu.active {
    display: block !important;
}

.mobile-menu-content {
    padding: 32px 24px;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.mobile-menu-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px;
    text-decoration: none;
    color: var(--text-dark);
    font-size: 18px;
    font-weight: 500;
    border-radius: 8px;
    transition: all 0.2s ease;
}

.mobile-menu-item:hover {
    background: var(--bg-light);
}

.mobile-menu-item.disabled {
    color: var(--text-light);
    opacity: 0.5;
    pointer-events: none;
}

/* Mobile Menu Dropdown */
.mobile-menu-dropdown {
    display: flex;
    flex-direction: column;
}

.mobile-menu-trigger {
    width: 100%;
    background: none;
    border: none;
    display: flex;
    align-items: center;
    justify-content: space-between;
    cursor: pointer;
    text-align: left;
}

.mobile-menu-trigger .dropdown-arrow {
    transition: transform 0.3s ease;
}

.mobile-menu-dropdown.active .dropdown-arrow {
    transform: rotate(180deg);
}

.mobile-submenu {
    display: none;
    flex-direction: column;
    gap: 4px;
    padding-left: 16px;
    margin-top: 8px;
}

.mobile-menu-dropdown.active .mobile-submenu {
    display: flex;
}

.mobile-submenu-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px;
    text-decoration: none;
    color: var(--text-dark);
    font-size: 16px;
    font-weight: 500;
    border-radius: 8px;
    transition: all 0.2s ease;
}

.mobile-submenu-item:hover {
    background: var(--bg-light);
}

.mobile-submenu-title {
    font-size: 16px;
    font-weight: 500;
    color: var(--text-dark);
}

.mobile-submenu-subtitle {
    font-size: 13px;
    color: var(--text-light);
    margin-top: 2px;
}

.mobile-submenu-divider {
    height: 1px;
    background: var(--border-color);
    margin: 12px 0;
}

/* Mega Menu */
.mega-menu {
    position: absolute;
    top: calc(100% + 12px);
    left: 50%;
    transform: translateX(-32%);
    background: var(--bg-white);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 24px;
    min-width: 850px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.08);
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    pointer-events: none;
}

.nav-item.active .mega-menu {
    opacity: 1;
    visibility: visible;
    pointer-events: all;
}

.mega-menu-content {
    display: grid;
    grid-template-columns: 1fr 1fr auto;
    gap: 32px;
}

.menu-section {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.menu-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px;
    text-decoration: none;
    color: var(--text-dark);
    border-radius: 8px;
    transition: all 0.2s ease;
    font-size: 15px;
    font-weight: 500;
}

.menu-item:hover {
    background: var(--bg-light);
}

.menu-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 24px;
    height: 24px;
}

.menu-header {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px;
    font-size: 15px;
    font-weight: 600;
    color: var(--text-dark);
    cursor: pointer;
    border-radius: 8px;
    transition: all 0.2s ease;
}

.menu-header:hover {
    background: var(--bg-light);
}

.submenu {
    display: flex;
    flex-direction: column;
    gap: 4px;
    padding-left: 12px;
}

.submenu-item {
    display: flex;
    flex-direction: column;
    gap: 4px;
    padding: 12px;
    text-decoration: none;
    color: var(--text-dark);
    border-radius: 8px;
    transition: all 0.2s ease;
    position: relative;
}

.submenu-item span:first-child {
    font-size: 15px;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 8px;
}

.submenu-item:hover {
    background: var(--bg-light);
}

.submenu-subtitle {
    font-size: 13px;
    color: var(--text-light);
    font-weight: 400 !important;
}

.menu-logo {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 20px;
    gap: 12px;
    border-left: 1px solid var(--border-color);
    padding-left: 32px;
}

.menu-logo-text {
    display: flex;
    flex-direction: column;
    align-items: center;
    font-size: 14px;
    font-weight: 600;
    line-height: 1.2;
}

/* Hero Section */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 120px 32px 80px;
    background: linear-gradient(to bottom, #fafafa 0%, #ffffff 100%);
    overflow: hidden;
}

.grid-background {
    position: absolute;
    inset: 0;
    background-image: 
        linear-gradient(to right, #e5e5e5 1px, transparent 1px),
        linear-gradient(to bottom, #e5e5e5 1px, transparent 1px);
    background-size: 60px 60px;
    opacity: 0.5;
    z-index: 0;
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    max-width: 900px;
}

.hero-logo {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    padding: 12px 24px;
    background: var(--bg-white);
    border: 1px solid var(--border-color);
    border-radius: 50px;
    margin-bottom: 48px;
    font-size: 16px;
    font-weight: 600;
}

.hero-logo-text {
    display: flex;
    gap: 0;
}

.hero-title {
    font-size: clamp(48px, 8vw, 84px);
    font-weight: 600;
    line-height: 1.1;
    margin-bottom: 32px;
    color: var(--text-dark);
    letter-spacing: -0.02em;
}

.hero-subtitle {
    font-size: clamp(18px, 2vw, 22px);
    line-height: 1.6;
    color: var(--text-gray);
    margin-bottom: 64px;
    font-weight: 400;
}

.btn-community {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 16px 32px;
    background: var(--text-dark);
    color: white;
    text-decoration: none;
    font-size: 16px;
    font-weight: 600;
    border-radius: 8px;
    transition: all 0.2s ease;
    border: 2px solid var(--text-dark);
}

.btn-community:hover {
    background: transparent;
    color: var(--text-dark);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

/* Responsive */
@media (max-width: 1024px) {
    .nav-center {
        gap: 4px;
    }
    
    .nav-link {
        padding: 8px 12px;
        font-size: 14px;
    }
    
    .mega-menu {
        min-width: 500px;
    }
}

@media (max-width: 768px) {
    .nav-container {
        padding: 0 20px;
    }
    
    .nav-center {
        display: none;
    }
    
    .mobile-menu-toggle {
        display: flex;
    }
    
    .hero {
        padding: 100px 20px 60px;
    }
    
    .hero-title {
        font-size: 40px;
    }
    
    .hero-subtitle {
        font-size: 16px;
    }
}

@media (max-width: 480px) {
    .navbar {
        height: 56px;
    }
    
    .logo {
        font-size: 18px;
    }
    
    .nav-right {
        gap: 8px;
    }
    
    .social-icon {
        width: 32px;
        height: 32px;
    }
    
    .mobile-menu {
        top: 56px;
    }
    
    .hero-logo {
        padding: 10px 20px;
        font-size: 14px;
    }
    
    .hero-title {
        font-size: 32px;
    }
    
    .hero-subtitle {
        font-size: 14px;
    }
    
    .btn-community {
        padding: 14px 28px;
        font-size: 14px;
    }
}