:root {
    --primary: #0078d4;
    --primary-dark: #005a9e;
    --bg: #f4f6f9;
    --card-bg: #ffffff;
    --text: #323130;
    --text-secondary: #605e5c;
    --border: #e1dfdd;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background-color: var(--bg);
    color: var(--text);
    line-height: 1.6;
    margin: 0;
    padding: 0;
}

header {
    background-color: var(--primary);
    color: white;
    padding: 2.5rem 1rem;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.site-header .brand {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    flex-wrap: wrap;
    text-align: center;
}

.brand-logo {
    width: 90px;
    height: auto;
    border-radius: 12px;
    background: white;
    padding: 0.35rem;
}

header h1 {
    margin: 0 0 0.5rem 0;
    font-size: 2rem;
}

header p {
    margin: 0;
    opacity: 0.9;
}

.container {
    max-width: 900px;
    margin: 2rem auto;
    padding: 0 1rem;
}

.contact-card {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 1.5rem;
    margin-bottom: 2rem;
    box-shadow: 0 1px 3px rgba(0,0,0,0.05);
}

.contact-intro h2 {
    margin-top: 0;
    color: var(--primary-dark);
}

.contact-intro p {
    margin-top: 0;
    color: var(--text-secondary);
}

.contact-form {
    display: grid;
    gap: 1rem;
}

.form-row {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
}

.form-row label {
    font-weight: 600;
}

.form-row input,
.form-row textarea {
    width: 100%;
    padding: 0.9rem 1rem;
    border: 1px solid var(--border);
    border-radius: 8px;
    font: inherit;
    box-sizing: border-box;
}

.form-row input:focus,
.form-row textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(0, 120, 212, 0.15);
}

.contact-form button {
    border: none;
    background: var(--primary);
    color: white;
    padding: 0.9rem 1.2rem;
    border-radius: 8px;
    font-size: 1rem;
    cursor: pointer;
    transition: background 0.2s ease;
}

.contact-form button:hover {
    background: var(--primary-dark);
}

.form-message {
    min-height: 1.2rem;
    margin: 0;
    color: var(--primary-dark);
    font-weight: 600;
}

.search-box {
    margin-bottom: 2rem;
}

.search-box input {
    width: 100%;
    padding: 1rem;
    font-size: 1rem;
    border: 1px solid var(--border);
    border-radius: 8px;
    box-sizing: border-box;
    box-shadow: 0 2px 4px rgba(0,0,0,0.02);
    outline: none;
}

.search-box input:focus {
    border-color: var(--primary);
}

.faq-category {
    margin-bottom: 2rem;
}

.faq-category h2 {
    color: var(--primary-dark);
    border-bottom: 2px solid var(--primary);
    padding-bottom: 0.5rem;
    font-size: 1.4rem;
}

.faq-item {
    background: var(--card-bg);
    border-radius: 8px;
    margin-bottom: 1rem;
    border: 1px solid var(--border);
    overflow: hidden;
    box-shadow: 0 1px 3px rgba(0,0,0,0.05);
}

.faq-question {
    padding: 1.2rem;
    font-weight: 600;
    cursor: pointer;
    background-color: #faf9f8;
    display: flex;
    justify-content: space-between;
    align-items: center;
    user-select: none;
}

.faq-question:hover {
    background-color: #f3f2f1;
}

.faq-question::after {
    content: '➕';
    font-size: 0.9rem;
}

.faq-item.open .faq-question::after {
    content: '➖';
}

.faq-answer {
    padding: 0 1.2rem;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease, padding 0.3s ease;
    background-color: var(--card-bg);
    color: var(--text-secondary);
}

.faq-item.open .faq-answer {
    padding: 1.2rem;
    max-height: 1000px;
    border-top: 1px solid var(--border);
}

.faq-answer ul, .faq-answer ol {
    padding-left: 1.5rem;
}

.faq-answer code {
    background-color: #f3f2f1;
    padding: 0.2rem 0.4rem;
    border-radius: 4px;
    font-family: monospace;
}

footer {
    text-align: center;
    padding: 2rem;
    color: var(--text-secondary);
    font-size: 0.9rem;
    border-top: 1px solid var(--border);
    margin-top: 3rem;
}