:root {
    --primary: #ff2c55;
    --primary-dark: #e62149;
    --primary-light: #ff476a;
    --secondary: #ff6b8a;
    --bg-light: #fff8f9;
    --bg-gradient: linear-gradient(135deg, #fff5f5 0%, #ffe4e4 50%, #fff0f2 100%);
    --text-dark: #1a1a1a;
    --text-gray: #666;
    --text-light: #999;
    --shadow-sm: 0 2px 8px rgba(255, 44, 85, 0.08);
    --shadow-md: 0 4px 16px rgba(255, 44, 85, 0.12);
    --shadow-lg: 0 8px 32px rgba(255, 44, 85, 0.16);
    --shadow-xl: 0 12px 48px rgba(255, 44, 85, 0.2);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 28px;
    --radius-full: 50%;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { 
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif; 
    background: var(--bg-gradient); 
    min-height: 100vh;
    color: var(--text-dark);
    line-height: 1.6;
}

.header {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 30%, #ff1a4a 70%, var(--secondary) 100%);
    padding: 60px 20px 80px;
    text-align: center;
    position: relative;
    overflow: hidden;
}
.header::before {
    content: '';
    position: absolute;
    top: -30%;
    left: -30%;
    width: 160%;
    height: 160%;
    background: radial-gradient(circle at 30% 20%, rgba(255,255,255,0.15) 0%, transparent 50%);
    animation: pulse 6s ease-in-out infinite;
}
.header::after {
    content: '';
    position: absolute;
    bottom: -10%;
    left: 50%;
    transform: translateX(-50%);
    width: 180%;
    height: 100px;
    background: linear-gradient(to bottom, rgba(255,255,255,0.1), transparent);
    border-radius: 50%;
}
@keyframes pulse {
    0%, 100% { transform: scale(1); opacity: 0.4; }
    50% { transform: scale(1.15); opacity: 0.7; }
}
.header h1 {
    font-size: clamp(2.5rem, 8vw, 4rem);
    color: white;
    margin-bottom: 15px;
    font-weight: 700;
    text-shadow: 0 4px 20px rgba(0,0,0,0.2);
    letter-spacing: -0.5px;
    animation: slideDown 0.6s ease-out;
    position: relative;
    z-index: 1;
}
@keyframes slideDown {
    from { opacity: 0; transform: translateY(-20px); }
    to { opacity: 1; transform: translateY(0); }
}
.header p {
    color: rgba(255,255,255,0.92);
    font-size: clamp(1rem, 3vw, 1.25rem);
    animation: fadeInUp 0.6s ease-out 0.2s both;
    position: relative;
    z-index: 1;
}
@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(15px); }
    to { opacity: 1; transform: translateY(0); }
}

.privacy-banner {
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.98) 0%, rgba(248, 252, 249, 0.98) 100%);
    backdrop-filter: blur(10px);
    padding: 12px 24px;
    text-align: center;
    border: 1px solid rgba(40, 167, 69, 0.15);
    border-radius: 12px;
    margin: -35px 20px 25px;
    position: relative;
    z-index: 100;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
}
.privacy-banner::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 50px;
    height: 3px;
    background: linear-gradient(90deg, transparent, #28a745, transparent);
    border-radius: 0 0 3px 3px;
}
.privacy-banner span {
    color: #2d6a4f;
    font-weight: 500;
    font-size: 0.85rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}
.privacy-banner svg { 
    width: 18px; 
    height: 18px; 
    color: #28a745;
    animation: shieldPulse 2s ease-in-out infinite;
}
@keyframes shieldPulse {
    0%, 100% { transform: scale(1); opacity: 1; }
    50% { transform: scale(1.08); opacity: 0.8; }
}

.container {
    max-width: 1100px;
    margin: -40px auto 0;
    padding: 0 20px;
    position: relative;
    z-index: 2;
}

.tools-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 35px;
    margin-bottom: 60px;
}

.tool-card {
    background: white;
    border-radius: var(--radius-xl);
    padding: 40px;
    box-shadow: var(--shadow-sm);
    transition: all 0.5s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    position: relative;
    overflow: hidden;
    cursor: pointer;
    animation: cardFadeIn 0.6s ease-out backwards;
}
.tool-card:nth-child(1) { animation-delay: 0.1s; }
.tool-card:nth-child(2) { animation-delay: 0.2s; }
@keyframes cardFadeIn {
    from { opacity: 0; transform: translateY(30px); }
    to { opacity: 1; transform: translateY(0); }
}
.tool-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 5px;
    background: linear-gradient(90deg, var(--primary), var(--secondary), var(--primary-light));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}
.tool-card:hover {
    transform: translateY(-12px) scale(1.02);
    box-shadow: var(--shadow-xl);
}
.tool-card:hover::before {
    transform: scaleX(1);
}

.tool-icon {
    width: 90px;
    height: 90px;
    margin: 0 auto 25px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3rem;
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    box-shadow: 0 6px 25px rgba(255, 44, 85, 0.25);
    position: relative;
}
.tool-icon::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(255,255,255,0.2), transparent);
    border-radius: var(--radius-lg);
}
.tool-card:hover .tool-icon {
    transform: scale(1.15) rotate(5deg);
    box-shadow: 0 10px 35px rgba(255, 44, 85, 0.35);
}

.tool-card h3 {
    font-size: 1.5rem;
    color: var(--text-dark);
    margin-bottom: 15px;
    text-align: center;
    font-weight: 600;
    letter-spacing: -0.3px;
}
.tool-card p {
    color: var(--text-gray);
    font-size: 0.95rem;
    text-align: center;
    margin-bottom: 25px;
    line-height: 1.7;
}

.tool-btn {
    display: block;
    width: 100%;
    padding: 16px;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: white;
    border: none;
    border-radius: var(--radius-lg);
    font-size: 1.05rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.35s ease;
    position: relative;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(255, 44, 85, 0.3);
}
.tool-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
    transition: left 0.6s ease;
}
.tool-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 28px rgba(255, 44, 85, 0.4);
}
.tool-btn:hover::before {
    left: 100%;
}
.tool-btn:active {
    transform: translateY(-1px);
}

.features-section {
    background: white;
    border-radius: var(--radius-xl);
    padding: 50px;
    box-shadow: var(--shadow-sm);
    animation: sectionFadeIn 0.6s ease-out 0.3s both;
}
@keyframes sectionFadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}
.features-section h2 {
    text-align: center;
    font-size: 1.8rem;
    color: var(--text-dark);
    margin-bottom: 40px;
    font-weight: 600;
    letter-spacing: -0.5px;
}
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 25px;
}
.feature-card {
    text-align: center;
    padding: 30px 20px;
    background: linear-gradient(135deg, #fff5f5, #fff);
    border-radius: var(--radius-xl);
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    position: relative;
    overflow: hidden;
}
.feature-card::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255, 44, 85, 0.03) 0%, transparent 70%);
    opacity: 0;
    transition: opacity 0.3s ease;
}
.feature-card:hover {
    background: linear-gradient(135deg, #ffe4e4, #fff5f5);
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(255, 44, 85, 0.12);
}
.feature-card:hover::before {
    opacity: 1;
}
.feature-card .icon {
    font-size: 2.8rem;
    margin-bottom: 15px;
    transition: transform 0.3s ease;
}
.feature-card:hover .icon {
    transform: scale(1.1);
}
.feature-card h4 {
    font-size: 1.1rem;
    color: var(--text-dark);
    margin-bottom: 10px;
    font-weight: 600;
}
.feature-card p {
    font-size: 0.9rem;
    color: var(--text-gray);
    line-height: 1.6;
}

.stats-section {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    gap: 25px;
    margin-top: 50px;
}
.stat-card {
    background: white;
    border-radius: var(--radius-xl);
    padding: 30px 20px;
    text-align: center;
    box-shadow: var(--shadow-sm);
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    position: relative;
    overflow: hidden;
}
.stat-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary), var(--secondary));
    transform: scaleX(0);
    transition: transform 0.3s ease;
}
.stat-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}
.stat-card:hover::before {
    transform: scaleX(1);
}
.stat-card .number {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 8px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.stat-card .label {
    font-size: 0.9rem;
    color: var(--text-gray);
    font-weight: 500;
}

.footer {
    background: rgba(0,0,0,0.03);
    padding: 40px 20px;
    text-align: center;
    margin-top: 60px;
    border-radius: 0 0 var(--radius-xl) var(--radius-xl);
}
.footer p {
    color: var(--text-light);
    font-size: 0.9rem;
}

@media (max-width: 768px) {
    .header {
        padding: 45px 15px 65px;
    }
    .header h1 {
        font-size: 2.2rem;
    }
    .container {
        padding: 0 15px;
        margin: -30px auto 0;
    }
    .tools-grid {
        gap: 25px;
    }
    .tool-card {
        padding: 30px 25px;
    }
    .tool-icon {
        width: 75px;
        height: 75px;
        font-size: 2.5rem;
    }
    .tool-card h3 {
        font-size: 1.3rem;
    }
    .features-section {
        padding: 35px 25px;
    }
    .features-section h2 {
        font-size: 1.5rem;
    }
    .features-grid {
        gap: 20px;
    }
    .feature-card {
        padding: 25px 15px;
    }
    .stats-section {
        gap: 20px;
    }
    .stat-card {
        padding: 25px 15px;
    }
    .stat-card .number {
        font-size: 2.2rem;
    }
}

@media (max-width: 480px) {
    .privacy-banner span {
        font-size: 0.8rem;
        flex-wrap: wrap;
    }
    .header {
        padding: 35px 15px 55px;
    }
    .header h1 {
        font-size: 1.8rem;
    }
    .header p {
        font-size: 0.95rem;
    }
    .tool-card {
        padding: 25px 20px;
    }
    .tool-icon {
        width: 65px;
        height: 65px;
        font-size: 2rem;
    }
    .features-grid {
        grid-template-columns: 1fr;
    }
    .features-section {
        padding: 25px 20px;
    }
    .stats-section {
        grid-template-columns: repeat(2, 1fr);
    }
    .stat-card .number {
        font-size: 2rem;
    }
}

@media (min-width: 1024px) {
    .features-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}