@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-12px); }
}

@keyframes pulse-glow {
    0%, 100% { box-shadow: 0 0 20px rgba(79, 70, 229, 0.3); }
    50% { box-shadow: 0 0 40px rgba(79, 70, 229, 0.6); }
}

@keyframes gradient-shift {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

@keyframes slide-up {
    from { opacity: 0; transform: translateY(30px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes shimmer {
    0% { background-position: -200% 0; }
    100% { background-position: 200% 0; }
}

@keyframes dash-mockup {
    0% { opacity: 0.3; }
    50% { opacity: 0.6; }
    100% { opacity: 0.3; }
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Helvetica, Arial, sans-serif;
    color: #1e293b;
    background: #ffffff;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: #f1f5f9;
}

::-webkit-scrollbar-thumb {
    background: linear-gradient(180deg, #6366f1, #3b82f6);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(180deg, #4f46e5, #2563eb);
}

.nav-glass {
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
    transition: all 0.3s ease;
}

.nav-glass.scrolled {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.08);
}

.hero-gradient {
    background: linear-gradient(135deg, #0f172a 0%, #1e1b4b 30%, #312e81 50%, #3730a3 70%, #4f46e5 100%);
    background-size: 200% 200%;
    animation: gradient-shift 12s ease infinite;
    position: relative;
    overflow: hidden;
}

.hero-gradient::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(ellipse at 30% 50%, rgba(99, 102, 241, 0.15) 0%, transparent 50%),
                radial-gradient(ellipse at 70% 20%, rgba(139, 92, 246, 0.1) 0%, transparent 40%),
                radial-gradient(ellipse at 50% 80%, rgba(59, 130, 246, 0.1) 0%, transparent 40%);
    pointer-events: none;
}

.hero-gradient::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 120px;
    background: linear-gradient(to top, #ffffff, transparent);
    pointer-events: none;
}

.dashboard-mockup {
    background: linear-gradient(135deg, rgba(255,255,255,0.1), rgba(255,255,255,0.02));
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 16px;
    backdrop-filter: blur(10px);
    animation: float 6s ease-in-out infinite;
    position: relative;
    overflow: hidden;
}

.dashboard-mockup::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 36px;
    background: rgba(255, 255, 255, 0.08);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.mockup-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    display: inline-block;
}

.mockup-bar {
    height: 8px;
    border-radius: 4px;
    background: rgba(255, 255, 255, 0.12);
    position: relative;
    overflow: hidden;
}

.mockup-bar::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    height: 100%;
    border-radius: 4px;
    animation: shimmer 3s ease-in-out infinite;
}

.mockup-bar.blue::after {
    width: 70%;
    background: linear-gradient(90deg, rgba(59, 130, 246, 0.5), rgba(59, 130, 246, 0.8));
}

.mockup-bar.purple::after {
    width: 55%;
    background: linear-gradient(90deg, rgba(139, 92, 246, 0.5), rgba(139, 92, 246, 0.8));
}

.mockup-bar.green::after {
    width: 85%;
    background: linear-gradient(90deg, rgba(34, 197, 94, 0.5), rgba(34, 197, 94, 0.8));
}

.mockup-card {
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 10px;
    padding: 16px;
}

.data-number {
    background: linear-gradient(135deg, #4f46e5, #3b82f6);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.feature-card {
    background: #ffffff;
    border: 1px solid #e2e8f0;
    border-radius: 16px;
    padding: 32px 24px;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, #4f46e5, #3b82f6, #8b5cf6);
    transform: scaleX(0);
    transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    transform-origin: left;
}

.feature-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 20px 60px rgba(79, 70, 229, 0.12), 0 4px 20px rgba(0, 0, 0, 0.06);
    border-color: transparent;
}

.feature-card:hover::before {
    transform: scaleX(1);
}

.feature-icon {
    width: 56px;
    height: 56px;
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
    margin-bottom: 20px;
    transition: transform 0.3s ease;
}

.feature-card:hover .feature-icon {
    transform: scale(1.1);
}

.badge-soon {
    display: inline-block;
    padding: 2px 10px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 500;
    background: linear-gradient(135deg, #fef3c7, #fde68a);
    color: #92400e;
    margin-left: 8px;
    vertical-align: middle;
}

.tab-btn {
    padding: 12px 28px;
    border-radius: 10px;
    font-size: 15px;
    font-weight: 500;
    color: #64748b;
    background: transparent;
    border: 1px solid transparent;
    cursor: pointer;
    transition: all 0.3s ease;
    white-space: nowrap;
}

.tab-btn:hover {
    color: #4f46e5;
    background: rgba(79, 70, 229, 0.05);
}

.tab-btn.active {
    color: #4f46e5;
    background: #ffffff;
    border-color: #e2e8f0;
    box-shadow: 0 4px 16px rgba(79, 70, 229, 0.1);
}

.tab-content {
    opacity: 0;
    transform: translateY(12px);
    transition: opacity 0.4s cubic-bezier(0.4, 0, 0.2, 1), transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    display: none;
    height: 0;
    overflow: hidden;
}

.tab-content.active {
    opacity: 1;
    transform: translateY(0);
    display: flex;
    height: auto;
    overflow: visible;
}

.screenshot-placeholder {
    background: linear-gradient(135deg, #eef2ff, #e0e7ff, #ddd6fe);
    border: 2px dashed #c7d2fe;
    border-radius: 16px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 360px;
    position: relative;
    overflow: hidden;
}

.screenshot-placeholder::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(79, 70, 229, 0.03), rgba(139, 92, 246, 0.03));
}

.screenshot-img {
    width: 100%;
    border-radius: 12px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.12), 0 2px 8px rgba(0, 0, 0, 0.06);
    border: 1px solid #e2e8f0;
}

.solution-card {
    border-radius: 20px;
    padding: 40px 36px;
    position: relative;
    overflow: hidden;
    transition: transform 0.3s ease;
}

.solution-card:hover {
    transform: translateY(-4px);
}

.solution-card.blue {
    background: linear-gradient(135deg, #eff6ff, #dbeafe);
    border: 1px solid #bfdbfe;
}

.solution-card.purple {
    background: linear-gradient(135deg, #f5f3ff, #ede9fe);
    border: 1px solid #ddd6fe;
}

.solution-card::after {
    content: '';
    position: absolute;
    top: -40px;
    right: -40px;
    width: 120px;
    height: 120px;
    border-radius: 50%;
    opacity: 0.08;
}

.solution-card.blue::after {
    background: #3b82f6;
}

.solution-card.purple::after {
    background: #8b5cf6;
}

.advantage-item {
    text-align: center;
    padding: 36px 24px;
    border-radius: 16px;
    background: #ffffff;
    border: 1px solid #f1f5f9;
    transition: all 0.3s ease;
}

.advantage-item:hover {
    border-color: #e0e7ff;
    box-shadow: 0 12px 40px rgba(79, 70, 229, 0.08);
}

.advantage-icon {
    width: 64px;
    height: 64px;
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    margin: 0 auto 20px;
    transition: transform 0.3s ease;
}

.advantage-item:hover .advantage-icon {
    transform: scale(1.1) rotate(-3deg);
}

.cta-section {
    background: linear-gradient(135deg, #0f172a 0%, #1e1b4b 40%, #312e81 70%, #3730a3 100%);
    position: relative;
    overflow: hidden;
}

.cta-section::before {
    content: '';
    position: absolute;
    top: -100px;
    right: -100px;
    width: 400px;
    height: 400px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(99, 102, 241, 0.15), transparent 70%);
    pointer-events: none;
}

.cta-section::after {
    content: '';
    position: absolute;
    bottom: -100px;
    left: -100px;
    width: 300px;
    height: 300px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(59, 130, 246, 0.1), transparent 70%);
    pointer-events: none;
}

.form-input {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid #e2e8f0;
    border-radius: 10px;
    font-size: 14px;
    color: #1e293b;
    background: #ffffff;
    transition: all 0.3s ease;
    outline: none;
}

.form-input:focus {
    border-color: #6366f1;
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.15);
}

.form-input::placeholder {
    color: #94a3b8;
}

.form-input.error {
    border-color: #ef4444;
    box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.1);
}

.form-label {
    display: block;
    font-size: 14px;
    font-weight: 500;
    color: #334155;
    margin-bottom: 6px;
}

.form-label .required {
    color: #ef4444;
    margin-left: 2px;
}

.submit-btn {
    background: linear-gradient(135deg, #4f46e5, #6366f1);
    color: #ffffff;
    border: none;
    padding: 14px 48px;
    border-radius: 12px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.submit-btn::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, #4338ca, #4f46e5);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.submit-btn:hover::before {
    opacity: 1;
}

.submit-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(79, 70, 229, 0.4);
}

.submit-btn:active {
    transform: translateY(0);
}

.submit-btn:disabled {
    opacity: 0.7;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

.submit-btn span {
    position: relative;
    z-index: 1;
}

.toast-container {
    position: fixed;
    top: 100px;
    right: 24px;
    z-index: 9999;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.toast {
    padding: 16px 24px;
    border-radius: 12px;
    font-size: 14px;
    font-weight: 500;
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.15);
    transform: translateX(120%);
    transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    display: flex;
    align-items: center;
    gap: 10px;
    max-width: 380px;
}

.toast.show {
    transform: translateX(0);
}

.toast.success {
    background: linear-gradient(135deg, #ecfdf5, #d1fae5);
    color: #065f46;
    border: 1px solid #a7f3d0;
}

.toast.error {
    background: linear-gradient(135deg, #fef2f2, #fecaca);
    color: #991b1b;
    border: 1px solid #fca5a5;
}

.mobile-menu {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.mobile-menu.open {
    max-height: 300px;
}

.hamburger-line {
    display: block;
    width: 22px;
    height: 2px;
    background: #1e293b;
    border-radius: 2px;
    transition: all 0.3s ease;
}

.hamburger.active .hamburger-line:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.hamburger.active .hamburger-line:nth-child(2) {
    opacity: 0;
}

.hamburger.active .hamburger-line:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

.nav-link {
    position: relative;
    color: #475569;
    font-weight: 500;
    transition: color 0.3s ease;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, #4f46e5, #3b82f6);
    border-radius: 1px;
    transition: width 0.3s ease;
}

.nav-link:hover,
.nav-link.active {
    color: #4f46e5;
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

.check-item {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 8px 0;
}

.check-icon {
    width: 22px;
    height: 22px;
    border-radius: 50%;
    background: linear-gradient(135deg, #4f46e5, #6366f1);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    margin-top: 2px;
}

.footer-link {
    color: #94a3b8;
    transition: color 0.3s ease;
    font-size: 14px;
}

.footer-link:hover {
    color: #ffffff;
}

@media (max-width: 768px) {
    .feature-card {
        padding: 24px 20px;
    }

    .solution-card {
        padding: 28px 24px;
    }

    .tab-btn {
        padding: 10px 18px;
        font-size: 13px;
    }

    .cta-section {
        padding: 60px 0;
    }
}

@media (max-width: 640px) {
    .hero-gradient {
        padding-top: 120px;
        padding-bottom: 80px;
    }
}