*,
*::before,
*::after {
    box-sizing: border-box;
}

:root {
    --bg-start: #00032c;
    --bg-end: #2116ad;
    --text-muted: rgba(255, 255, 255, 0.78);
    --card-bg: rgba(255, 255, 255, 0.05);
    --card-border: rgba(255, 255, 255, 0.14);
}

html,
body {
    margin: 0;
    padding: 0;
}

body {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    font-family: "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    color: #ffffff;
    background: linear-gradient(160deg, var(--bg-start) 0%, var(--bg-end) 100%);
    background-attachment: fixed;
    line-height: 1.6;
}

.site-header {
    display: flex;
    align-items: center;
    padding: 20px 32px;
}

.site-header__brand {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    color: #ffffff;
}

.site-header__logo {
    height: 42px;
    width: auto;
    display: block;
    border-radius: 10px;
}

.page {
    flex: 1;
    width: 100%;
    max-width: 980px;
    margin: 0 auto;
    padding: 32px 16px 120px;
    overflow-wrap: anywhere;
}

.page a {
    color: #bcd0ff;
}

.page a:hover,
.page a:focus-visible {
    color: #ffffff;
}

.adv-title {
    margin: 0 0 16px;
    font-size: clamp(1.7rem, 5vw, 2.4rem);
    font-weight: 800;
}

.adv-lead {
    margin: 0 0 18px;
    font-size: 1.05rem;
    color: var(--text-muted);
}

.adv-h2 {
    margin: 44px 0 14px;
    font-size: 1.35rem;
}

.adv-list {
    margin: 0;
    padding-left: 22px;
    color: var(--text-muted);
}

.adv-list li {
    margin: 0 0 8px;
}

.adv-muted {
    color: var(--text-muted);
    font-size: 0.92rem;
}

.adv-steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 14px;
    margin: 0 0 20px;
    padding: 0;
    list-style: none;
    counter-reset: adv;
}

.adv-steps li,
.adv-box {
    padding: 16px;
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 16px;
}

.adv-steps li {
    counter-increment: adv;
}

.adv-steps li::before {
    content: counter(adv);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 30px;
    height: 30px;
    margin-bottom: 8px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.14);
    font-weight: 700;
}

.adv-steps strong {
    display: block;
    margin-bottom: 4px;
}

.adv-steps span {
    color: var(--text-muted);
    font-size: 0.92rem;
}

.adv-btn {
    display: inline-block;
    padding: 12px 26px;
    border-radius: 999px;
    background: #ffffff;
    color: #00032c !important;
    font-weight: 700;
    text-decoration: none;
}

.adv-btn:hover,
.adv-btn:focus-visible {
    background: #dfe7ff;
}

.adv-formats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 18px;
}

.adv-format {
    display: flex;
    flex-direction: column;
}

.adv-format .sponsored-card {
    margin-top: auto;
}

.adv-format h3 {
    margin: 0 0 6px;
    font-size: 1.05rem;
}

.adv-format p {
    margin: 0 0 12px;
    color: var(--text-muted);
    font-size: 0.92rem;
}

.adv-demo .sponsored-card__report {
    cursor: default;
}

.adv-grid-2 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 14px;
}

.adv-box h3 {
    margin: 0 0 8px;
    font-size: 1rem;
}

.adv-good h3 {
    color: #9ff0c0;
}

.adv-bad h3 {
    color: #ffb4b4;
}

.adv-table-wrap {
    overflow-x: auto;
}

.adv-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.95rem;
}

.adv-table th,
.adv-table td {
    padding: 10px 12px;
    text-align: left;
    border-bottom: 1px solid var(--card-border);
}

.adv-table th {
    color: var(--text-muted);
    font-weight: 600;
}

.adv-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 14px;
}

.adv-stat__value {
    display: block;
    font-size: 1.6rem;
    font-weight: 800;
}

.adv-stat__label {
    color: var(--text-muted);
    font-size: 0.9rem;
}

.adv-faq details {
    margin: 0 0 10px;
    padding: 12px 16px;
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 14px;
}

.adv-faq summary {
    cursor: pointer;
    font-weight: 600;
}

.adv-faq p {
    margin: 10px 0 0;
    color: var(--text-muted);
}

@media (max-width: 600px) {
    .adv-table th,
    .adv-table td {
        padding: 8px 6px;
        font-size: 0.88rem;
    }
}

/* Інструкція рекламодавця (advertise-guide.php) */
/* Якорі змісту не ховаються під липкою шапкою сайту. */
.adv-h2[id] {
    scroll-margin-top: 170px;
}

.adv-toc {
    margin: 0 0 8px;
    padding: 16px 16px 16px 36px;
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 16px;
}

.adv-toc li {
    margin: 0 0 4px;
}

.adv-guide-step {
    margin: 0 0 14px;
    padding: 16px;
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 16px;
}

.adv-guide-step h3 {
    margin: 0 0 8px;
    font-size: 1.05rem;
}

.adv-guide-step .adv-list {
    margin-top: 6px;
}

.adv-path {
    display: inline-block;
    padding: 1px 8px;
    border-radius: 8px;
    background: rgba(255, 255, 255, 0.12);
    color: #ffffff;
    font-weight: 600;
    white-space: nowrap;
}

.adv-note {
    margin: 14px 0 0;
    padding: 12px 16px;
    border-left: 3px solid #9ff0c0;
    background: var(--card-bg);
    border-radius: 0 12px 12px 0;
    color: var(--text-muted);
}

.adv-note--warn {
    border-left-color: #ffd27a;
}

.adv-formula {
    font-family: Consolas, "Courier New", monospace;
    color: #ffffff;
}