* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
}

:root {
    --primary-blue: #2162a1;
    --bright-blue: #0a7cd1;
    --light-blue: #1c89e3;
    --dark-blue: #0c3353;
    --primary-orange: #d14900;
    --bright-orange: #ff6200;
    --orange-accent: #ff8400;
    --light-orange: #ffa41c;
    --white: #ffffff;
    --main-text: #0f1111;
    --secondary-text: #565959;
    --muted-text: #888c8c;
    --border: #d5d9d9;
    --light-bg: #f7fafa;
    --light-blue-bg: #edf8ff;
    --shadow: 0 4px 12px rgba(0,0,0,0.05);
    --radius: 12px;
}

body {
    background: var(--white);
    color: var(--main-text);
    line-height: 1.5;
}

a { text-decoration: none; color: inherit; }
.container { max-width: 1240px; margin: 0 auto; padding: 0 20px; }

/* HEADER */
.header {
    background: var(--white);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

.logo a {
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 700;
    font-size: 1.5rem;
    color: var(--primary-blue);
}

.logo i { font-size: 1.8rem; color: var(--primary-orange); }
.logo span { color: var(--main-text); }

.nav {
    display: flex;
    align-items: center;
    gap: 28px;
}

.nav a {
    font-weight: 500;
    color: var(--secondary-text);
    transition: 0.2s;
    font-size: 0.95rem;
}

.nav a:hover, .nav a.active { color: var(--primary-blue); }
.nav .search-icon { color: var(--primary-blue); font-size: 1.2rem; }

.hamburger {
    display: none;
    font-size: 1.6rem;
    color: var(--primary-blue);
    background: none;
    border: none;
    cursor: pointer;
}

/* HERO */
.hero {
    background: var(--light-blue-bg);
    padding: 50px 0 40px;
    border-bottom: 1px solid var(--border);
}

.hero-grid {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 40px;
}

.hero-content { flex: 1 1 300px; }
.hero-content h1 {
    font-size: 2.8rem;
    font-weight: 700;
    color: var(--dark-blue);
    line-height: 1.2;
    margin-bottom: 16px;
}

.hero-content p {
    font-size: 1.2rem;
    color: var(--secondary-text);
    max-width: 520px;
    margin-bottom: 24px;
}

.hero-buttons { display: flex; flex-wrap: wrap; gap: 14px; }

.btn-primary {
    background: var(--primary-blue);
    color: var(--white);
    padding: 12px 30px;
    border-radius: 40px;
    font-weight: 600;
    border: none;
    cursor: pointer;
    transition: 0.2s;
    display: inline-block;
}

.btn-primary:hover { background: var(--bright-blue); }

.btn-secondary {
    background: var(--white);
    color: var(--primary-blue);
    padding: 12px 30px;
    border-radius: 40px;
    font-weight: 600;
    border: 1px solid var(--primary-blue);
    cursor: pointer;
    transition: 0.2s;
    display: inline-block;
}

.btn-secondary:hover { background: var(--light-blue-bg); }

.hero-visual {
    flex: 1 1 280px;
    text-align: center;
    font-size: 5rem;
    color: var(--primary-blue);
    background: var(--white);
    padding: 30px 20px;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 20px;
}

.hero-visual i {
    background: var(--light-blue-bg);
    padding: 16px;
    border-radius: 60px;
    color: var(--primary-orange);
    font-size: 2.8rem;
}

/* SEARCH */
.search-section {
    background: var(--white);
    padding: 40px 0;
    border-bottom: 1px solid var(--border);
}

.search-section h2 {
    font-size: 1.8rem;
    font-weight: 600;
    color: var(--dark-blue);
    margin-bottom: 12px;
}

.search-box {
    display: flex;
    max-width: 700px;
    background: var(--white);
    border: 2px solid var(--border);
    border-radius: 60px;
    overflow: hidden;
    transition: 0.2s;
    margin-top: 8px;
}

.search-box:focus-within {
    border-color: var(--primary-blue);
    box-shadow: 0 0 0 3px rgba(33, 98, 161, 0.15);
}

.search-box input {
    flex: 1;
    padding: 16px 22px;
    border: none;
    outline: none;
    font-size: 1rem;
    background: transparent;
}

.search-box button {
    background: var(--primary-blue);
    color: white;
    border: none;
    padding: 0 28px;
    font-weight: 600;
    cursor: pointer;
    transition: 0.2s;
}

.search-box button:hover { background: var(--bright-blue); }

.quick-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 18px;
}

.quick-tags span {
    background: var(--light-bg);
    padding: 6px 18px;
    border-radius: 30px;
    font-size: 0.85rem;
    color: var(--secondary-text);
    border: 1px solid var(--border);
    cursor: pointer;
    transition: 0.2s;
}

.quick-tags span:hover {
    background: var(--primary-blue);
    color: white;
    border-color: var(--primary-blue);
}

/* CARDS */
.section-title {
    font-size: 2rem;
    font-weight: 700;
    color: var(--dark-blue);
    margin: 50px 0 20px;
    position: relative;
}

.section-title:after {
    content: '';
    display: block;
    width: 60px;
    height: 4px;
    background: var(--primary-orange);
    margin-top: 8px;
    border-radius: 4px;
}

.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 28px;
    margin-bottom: 30px;
}

.card {
    background: var(--white);
    border-radius: var(--radius);
    padding: 24px 20px;
    box-shadow: var(--shadow);
    border: 1px solid var(--border);
    transition: 0.25s ease;
}

.card:hover {
    transform: translateY(-4px);
    border-color: var(--primary-blue);
    box-shadow: 0 12px 28px rgba(0,0,0,0.06);
}

.card i { font-size: 2rem; color: var(--primary-orange); margin-bottom: 10px; }
.card h3 { font-size: 1.2rem; margin-bottom: 8px; color: var(--dark-blue); }
.card p { color: var(--secondary-text); font-size: 0.95rem; margin-bottom: 16px; }

.btn-small {
    background: transparent;
    border: 1px solid var(--primary-blue);
    color: var(--primary-blue);
    padding: 6px 20px;
    border-radius: 40px;
    font-weight: 500;
    transition: 0.2s;
    display: inline-block;
    font-size: 0.9rem;
}

.btn-small:hover { background: var(--primary-blue); color: white; }

/* BRANDS */
.brand-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    gap: 18px;
    margin: 20px 0 30px;
}

.brand-item {
    background: var(--light-bg);
    padding: 16px 8px;
    border-radius: var(--radius);
    text-align: center;
    border: 1px solid var(--border);
    font-weight: 500;
    color: var(--secondary-text);
    transition: 0.2s;
}

.brand-item:hover {
    border-color: var(--primary-blue);
    background: var(--light-blue-bg);
    color: var(--primary-blue);
}

.disclaimer-mini {
    background: var(--light-bg);
    padding: 18px 22px;
    border-radius: var(--radius);
    font-size: 0.9rem;
    color: var(--secondary-text);
    border-left: 5px solid var(--primary-orange);
    margin: 20px 0;
}

/* TROUBLESHOOTING */
.trouble-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 16px;
    margin: 20px 0;
}

.trouble-card {
    background: var(--white);
    border: 1px solid var(--border);
    padding: 18px 14px;
    border-radius: var(--radius);
    text-align: center;
    cursor: pointer;
    transition: 0.2s;
}

.trouble-card:hover {
    border-color: var(--bright-orange);
    background: var(--light-blue-bg);
}

.trouble-card i { font-size: 1.8rem; color: var(--primary-orange); margin-bottom: 6px; }

/* STEPS */
.step-list { counter-reset: step; margin: 20px 0 30px; }
.step-item {
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 18px 22px;
    margin-bottom: 14px;
    display: flex;
    align-items: center;
    gap: 18px;
    box-shadow: var(--shadow);
}

.step-number {
    font-weight: 700;
    font-size: 1.6rem;
    color: var(--primary-blue);
    background: var(--light-blue-bg);
    width: 50px;
    height: 50px;
    border-radius: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

/* FAQ */
.faq-item { border-bottom: 1px solid var(--border); padding: 18px 0; }
.faq-question {
    font-weight: 600;
    font-size: 1.1rem;
    display: flex;
    justify-content: space-between;
    cursor: pointer;
    color: var(--dark-blue);
}

.faq-answer { padding-top: 10px; color: var(--secondary-text); display: none; }
.faq-answer.show { display: block; }

/* FOOTER */
.footer {
    background: var(--dark-blue);
    color: #d9e2ed;
    padding: 50px 0 30px;
    margin-top: 50px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: 40px;
}

.footer h4 { color: white; margin-bottom: 16px; font-size: 1.1rem; }
.footer a { display: block; color: #b0c7dd; margin-bottom: 10px; transition: 0.2s; }
.footer a:hover { color: white; }

.footer .disclaimer {
    font-size: 0.8rem;
    opacity: 0.7;
    border-top: 1px solid #2a4a6a;
    padding-top: 24px;
    margin-top: 30px;
    text-align: center;
}

/* CONTACT FORM */
.contact-form { max-width: 600px; margin: 30px 0; }
.contact-form label { display: block; font-weight: 600; margin-top: 16px; }
.contact-form input, .contact-form textarea {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--border);
    border-radius: 8px;
    margin-top: 4px;
    font-size: 1rem;
}
.contact-form textarea { min-height: 140px; }

/* BREADCRUMBS */
.breadcrumb { font-size: 0.9rem; color: var(--muted-text); padding: 16px 0; }
.breadcrumb a { color: var(--primary-blue); }
.breadcrumb span { margin: 0 6px; }

/* RESPONSIVE */
@media (max-width: 860px) {
    .nav {
        display: none;
        flex-direction: column;
        background: white;
        position: absolute;
        top: 72px;
        left: 0;
        width: 100%;
        padding: 20px 30px;
        border-bottom: 2px solid var(--border);
        gap: 18px;
        box-shadow: 0 8px 20px rgba(0,0,0,0.03);
    }
    .nav.open { display: flex; }
    .hamburger { display: block; }
    .hero-content h1 { font-size: 2.2rem; }
    .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 520px) {
    .hero-grid { flex-direction: column; }
    .hero-visual { font-size: 3rem; }
    .search-box { flex-wrap: wrap; border-radius: 40px; }
    .search-box input { width: 100%; border-radius: 40px 40px 0 0; }
    .search-box button { width: 100%; border-radius: 0 0 40px 40px; padding: 14px; }
    .footer-grid { grid-template-columns: 1fr; }
}

.bg-light { background: var(--light-bg); padding: 20px; border-radius: var(--radius); }
.mt-20 { margin-top: 20px; }
.mb-20 { margin-bottom: 20px; }
.flex { display: flex; gap: 14px; flex-wrap: wrap; }
.text-muted { color: var(--muted-text); font-size: 0.9rem; }