:root {
    --primary-color: #ff6b81;
    --secondary-color: #ff9a9e;
    --text-color: #333;
    --light-text: #666;
    --bg-color: #fff;
    --section-bg: #f9f9f9;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--bg-color);
}

.container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header */
header {
    background-color: #fff;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.logo {
    font-weight: bold;
    font-size: 1.2rem;
    color: var(--primary-color);
}

nav ul {
    list-style: none;
    display: flex;
    gap: 20px;
}

nav a {
    text-decoration: none;
    color: var(--text-color);
    font-weight: 500;
    transition: color 0.3s;
}

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

/* Hero Section */
.hero {
    background: linear-gradient(135deg, #fdfbfb 0%, #ebedee 100%);
    padding: 80px 0;
    text-align: center;
    background-image: linear-gradient(120deg, #a1c4fd 0%, #c2e9fb 100%); /* Fallback or alternative cool tone, let's switch to warm */
    background-image: linear-gradient(to top, #fad0c4 0%, #ffd1ff 100%);
}

.hero h1 {
    font-size: 3rem;
    margin-bottom: 10px;
    color: var(--text-color);
}

.tagline {
    font-size: 1.5rem;
    color: var(--primary-color);
    margin-bottom: 20px;
    font-weight: 600;
}

.description {
    max-width: 600px;
    margin: 0 auto;
    color: var(--light-text);
    font-size: 1.1rem;
}

/* Section Common */
.section {
    padding: 60px 0;
}

.section-title {
    text-align: center;
    margin-bottom: 40px;
    font-size: 2rem;
    position: relative;
}

.section-title::after {
    content: '';
    display: block;
    width: 50px;
    height: 3px;
    background-color: var(--primary-color);
    margin: 10px auto 0;
}

/* Features */
.cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.card {
    background: #fff;
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
    text-align: center;
    transition: transform 0.3s;
    border-top: 4px solid var(--secondary-color);
}

.card:hover {
    transform: translateY(-5px);
}

.card h3 {
    margin-bottom: 15px;
    color: var(--text-color);
}

.card p {
    color: var(--light-text);
}

/* Contact */
.contact-section {
    background-color: var(--section-bg);
    text-align: center;
}

.contact-box {
    background: #fff;
    padding: 40px;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
    max-width: 600px;
    margin: 0 auto;
}

.contact-item {
    margin-top: 20px;
    font-size: 1.1rem;
}

.email-link {
    color: var(--primary-color);
    font-weight: bold;
    text-decoration: none;
}

/* Footer */
footer {
    background-color: #333;
    color: #fff;
    padding: 30px 0;
    text-align: center;
}

.footer-content {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.icp-info {
    font-size: 0.9rem;
    opacity: 0.7;
}

/* Responsive */
@media (max-width: 768px) {
    .header-content {
        flex-direction: column;
        height: auto;
        padding: 15px 0;
    }
    
    nav ul {
        margin-top: 15px;
        gap: 15px;
    }

    .hero h1 {
        font-size: 2.2rem;
    }
}

/* Why Choose Us / GEO Section */
#features article {
    margin-bottom: 30px;
    padding: 25px 30px;
    background: #fff;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
    border-left: 4px solid var(--secondary-color);
}

#features article:last-child {
    margin-bottom: 0;
}

#features article h3 {
    margin-bottom: 10px;
    color: var(--text-color);
    font-size: 1.25rem;
}

#features article p {
    color: var(--light-text);
    line-height: 1.7;
}

/* QR Code Block */
.qrcode-block {
    margin-top: 35px;
    text-align: center;
}

.qrcode-block img {
    width: 160px;
    height: 160px;
    border-radius: 12px;
    box-shadow: 0 8px 25px rgba(0,0,0,0.12);
    background: #fff;
    padding: 8px;
    display: inline-block;
}

.qrcode-block p {
    margin-top: 12px;
    font-size: 0.95rem;
    color: var(--light-text);
}

@media (max-width: 768px) {
    .qrcode-block img {
        width: 140px;
        height: 140px;
    }
}

/* Summary Section */
.summary-section {
    background-color: var(--section-bg);
}

.summary-box {
    background: #fff;
    padding: 35px 40px;
    border-radius: 12px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.06);
}

.summary-box p {
    color: var(--text-color);
    line-height: 1.8;
    margin-bottom: 20px;
    font-size: 1.05rem;
}

.summary-list {
    list-style: none;
    padding: 0;
}

.summary-list li {
    padding: 10px 0 10px 28px;
    position: relative;
    color: var(--light-text);
    line-height: 1.7;
}

.summary-list li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--primary-color);
    font-weight: bold;
}

/* How it works */
.steps-list {
    counter-reset: step;
    list-style: none;
    padding: 0;
    max-width: 800px;
    margin: 0 auto;
}

.steps-list li {
    counter-increment: step;
    position: relative;
    padding: 20px 20px 20px 70px;
    margin-bottom: 15px;
    background: #fff;
    border-radius: 10px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.05);
    color: var(--light-text);
    line-height: 1.7;
}

.steps-list li::before {
    content: counter(step);
    position: absolute;
    left: 20px;
    top: 50%;
    transform: translateY(-50%);
    width: 34px;
    height: 34px;
    background: var(--primary-color);
    color: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
}

/* Use Cases */
.articles {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 25px;
}

.articles article {
    background: #fff;
    padding: 25px;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
    border-left: 4px solid var(--secondary-color);
}

.articles article h3 {
    margin-bottom: 10px;
    color: var(--text-color);
    font-size: 1.2rem;
}

.articles article p {
    color: var(--light-text);
    line-height: 1.7;
}

/* FAQ */
.faq-section {
    background-color: var(--section-bg);
}

.faq-list {
    max-width: 800px;
    margin: 0 auto;
}

.faq-list dt {
    font-weight: bold;
    font-size: 1.1rem;
    color: var(--text-color);
    margin-top: 25px;
    margin-bottom: 8px;
    padding-left: 15px;
    border-left: 4px solid var(--primary-color);
}

.faq-list dd {
    color: var(--light-text);
    line-height: 1.8;
    margin-left: 0;
    padding-left: 19px;
}

@media (max-width: 768px) {
    .summary-box {
        padding: 25px;
    }

    .steps-list li {
        padding: 18px 15px 18px 60px;
    }

    .steps-list li::before {
        left: 15px;
        width: 30px;
        height: 30px;
    }
}