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

:root {
    --xrl_primary: #24479c;
    --xrl_accent: #f59e0b;
    --xrl_deep: #12244f;
    --xrl_surface: #eef1fa;
    --xrl_paper: #ffffff;
    --xrl_ink: #1a2338;
    --xrl_muted: #5a6580;
    --xrl_line: #d5ddf1;
    --xrl_font_ui: "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    --xrl_font_head: "Trebuchet MS", "Segoe UI", Verdana, sans-serif;
    --xrl_rad_s: 10px;
    --xrl_rad_m: 16px;
    --xrl_rad_l: 24px;
    --xrl_sh_low: 0 8px 20px rgba(18, 36, 79, .07);
    --xrl_sh_mid: 0 16px 40px rgba(18, 36, 79, .12);
    --xrl_sh_high: 0 26px 58px rgba(18, 36, 79, .18);
}

html { scroll-behavior: smooth; }

body {
    font-family: var(--xrl_font_ui);
    background:
        radial-gradient(circle at 12% -4%, rgba(36, 71, 156, .1), transparent 34%),
        linear-gradient(180deg, #ffffff 0%, #eef1fa 100%);
    color: var(--xrl_ink);
    line-height: 1.7;
    font-size: 16px;
}

a {
    color: var(--xrl_primary);
    text-decoration: none;
    transition: color .2s ease;
}
a:hover { color: var(--xrl_accent); }

/* ---------- шапка ---------- */
.xrl_bar {
    position: sticky;
    top: 0;
    z-index: 20;
    padding: 16px 20px;
    background: rgba(255, 255, 255, .92);
    backdrop-filter: blur(14px);
    border-bottom: 2px solid rgba(36, 71, 156, .16);
}
.xrl_bar_inner {
    max-width: 1160px;
    margin: 0 auto;
    text-align: center;
}
.xrl_bar_logo {
    font-family: var(--xrl_font_head);
    font-size: 22px;
    letter-spacing: .1em;
    font-weight: 800;
    color: var(--xrl_deep);
}
.xrl_bar_logo span { color: var(--xrl_accent); }

/* ---------- hero документа ---------- */
.xrl_doc_hero {
    padding: 64px 20px 40px;
    text-align: center;
}
.xrl_doc_tag {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 16px;
    border-radius: 6px;
    border: 2px solid rgba(36, 71, 156, .2);
    background: #ffffff;
    box-shadow: var(--xrl_sh_low);
    font-size: 12px;
    font-weight: 800;
    letter-spacing: .12em;
    text-transform: uppercase;
    color: var(--xrl_primary);
    margin-bottom: 16px;
}
.xrl_doc_title {
    max-width: 780px;
    margin: 0 auto 12px;
    font-family: var(--xrl_font_head);
    font-size: clamp(28px, 4.6vw, 48px);
    line-height: 1.18;
    color: var(--xrl_deep);
    border-bottom: 4px solid var(--xrl_accent);
    display: inline-block;
    padding-bottom: 8px;
}
.xrl_doc_lead {
    max-width: 660px;
    margin: 14px auto 0;
    color: var(--xrl_muted);
    font-size: 17px;
}

/* ---------- каркас сторінки ---------- */
.xrl_shell {
    max-width: 940px;
    margin: 0 auto;
    padding: 0 20px 80px;
}
.xrl_sheet {
    background: var(--xrl_paper);
    border: 2px solid var(--xrl_line);
    border-radius: var(--xrl_rad_l);
    box-shadow: var(--xrl_sh_mid);
    padding: 46px 50px;
    counter-reset: xrl_tier;
}
@media (max-width: 740px) {
    .xrl_sheet { padding: 28px 20px; border-radius: var(--xrl_rad_m); }
    .xrl_doc_hero { padding-top: 48px; }
}

/* ---------- дворівневий список: рівень 1 ---------- */
.xrl_tier {
    counter-increment: xrl_tier;
    counter-reset: xrl_step;
    padding: 0 0 4px 0;
    margin: 34px 0 0;
    border-top: 1px solid var(--xrl_line);
}
.xrl_tier:first-of-type {
    margin-top: 8px;
    border-top: none;
}
.xrl_tier_head {
    font-family: var(--xrl_font_head);
    font-size: clamp(20px, 2.8vw, 27px);
    line-height: 1.22;
    color: var(--xrl_deep);
    margin: 26px 0 12px;
    padding-left: 52px;
    position: relative;
}
.xrl_tier:first-of-type .xrl_tier_head { margin-top: 0; }
.xrl_tier_head::before {
    content: counter(xrl_tier);
    position: absolute;
    left: 0;
    top: 2px;
    width: 38px;
    height: 38px;
    display: grid;
    place-items: center;
    border-radius: var(--xrl_rad_s);
    background: var(--xrl_deep);
    color: #ffffff;
    font-family: var(--xrl_font_ui);
    font-size: 16px;
    font-weight: 800;
    line-height: 1;
}

/* ---------- дворівневий список: рівень 2 ---------- */
.xrl_tier_sub {
    counter-increment: xrl_step;
    font-family: var(--xrl_font_ui);
    font-size: 17px;
    font-weight: 800;
    line-height: 1.35;
    color: var(--xrl_primary);
    margin: 22px 0 8px;
    padding-left: 52px;
    position: relative;
}
.xrl_tier_sub::before {
    content: counter(xrl_tier) "." counter(xrl_step);
    position: absolute;
    left: 0;
    top: 0;
    font-size: 13px;
    font-weight: 800;
    color: var(--xrl_accent);
    letter-spacing: .04em;
}
.xrl_tier p,
.xrl_tier ul,
.xrl_tier ol {
    padding-left: 52px;
    color: var(--xrl_muted);
    margin: 0 0 14px;
}
.xrl_tier ul,
.xrl_tier ol { padding-left: 74px; }
.xrl_tier li { margin-bottom: 6px; }
.xrl_tier ul { list-style: square; }
.xrl_sheet strong { color: var(--xrl_ink); }

@media (max-width: 560px) {
    .xrl_tier_head { padding-left: 44px; font-size: 21px; }
    .xrl_tier_head::before { width: 32px; height: 32px; font-size: 14px; }
    .xrl_tier_sub { padding-left: 0; padding-top: 18px; }
    .xrl_tier_sub::before { top: 0; }
    .xrl_tier p { padding-left: 0; }
    .xrl_tier ul, .xrl_tier ol { padding-left: 22px; }
}

/* ---------- виносні блоки ---------- */
.xrl_note,
.xrl_warn {
    margin: 20px 0 20px 52px;
    padding: 18px 20px;
    border-radius: var(--xrl_rad_s);
    font-size: 15px;
    line-height: 1.65;
}
.xrl_note {
    background: #eef1fa;
    border-left: 5px solid var(--xrl_primary);
    color: var(--xrl_ink);
}
.xrl_warn {
    background: #fff6e6;
    border-left: 5px solid var(--xrl_accent);
    color: #5a3d05;
}
.xrl_note p, .xrl_warn p { margin: 0; padding: 0; color: inherit; }
.xrl_note_tag,
.xrl_warn_tag {
    display: block;
    font-size: 12px;
    font-weight: 800;
    letter-spacing: .12em;
    text-transform: uppercase;
    margin-bottom: 5px;
}
.xrl_note_tag { color: var(--xrl_primary); }
.xrl_warn_tag { color: #a9670a; }
@media (max-width: 560px) {
    .xrl_note, .xrl_warn { margin-left: 0; }
}

/* ---------- відмітка про оновлення ---------- */
.xrl_stamp {
    margin: 28px 0 0;
    padding: 14px 18px;
    border: 2px dashed var(--xrl_line);
    border-radius: var(--xrl_rad_s);
    text-align: center;
    font-size: 14px;
    color: var(--xrl_muted);
}
.xrl_stamp strong { color: var(--xrl_deep); }

/* ---------- підвал ---------- */
.xrl_page_footer {
    margin-top: 40px;
    background: var(--xrl_deep);
    color: #a8b4d2;
    padding: 26px 20px 20px;
    text-align: center;
    border-top: 4px solid var(--xrl_accent);
}
.xrl_page_footer_inner {
    max-width: 900px;
    margin: 0 auto;
}
.xrl_page_footer_links {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 6px 22px;
    margin-bottom: 12px;
}
.xrl_page_footer_links a {
    color: #c6d1ea;
    font-size: 12px;
}
.xrl_page_footer_links a:hover { color: var(--xrl_accent); }
.xrl_page_footer_copy {
    font-size: 12px;
    color: #8d9bbd;
}