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

:root {
    --xrv-graphite: #1b1f24;
    --xrv-slate: #2f3a45;
    --xrv-blue: #2f8fff;
    --xrv-ink: #12161a;
    --xrv-mute: #6b7683;
    --xrv-paper: #f4f6f9;
    --xrv-panel: #ffffff;
    --xrv-edge: #dde3ea;
    --xrv-face: "Roboto", "Segoe UI", Arial, sans-serif;
    --xrv-cap: "Arial Black", "Impact", sans-serif;
    --xrv-r: 8px;
    --xrv-r-sm: 4px;
    --xrv-cut1: 0 2px 0 rgba(47, 143, 255, .18);
    --xrv-cut2: 6px 6px 0 rgba(27, 31, 36, .10);
    --xrv-cut3: 0 14px 34px rgba(18, 22, 26, .24);
}

html { scroll-behavior: smooth; }

body {
    font-family: var(--xrv-face);
    background: var(--xrv-paper);
    color: var(--xrv-ink);
    line-height: 1.72;
    font-size: 16px;
}

a {
    color: var(--xrv-blue);
    text-decoration: none;
    transition: color .18s ease;
}
a:hover { color: var(--xrv-slate); }

/* ---------- header ---------- */
.xrv-c-head {
    background: var(--xrv-panel);
    border-bottom: 3px solid var(--xrv-blue);
    padding: 16px 20px;
    position: sticky;
    top: 0;
    z-index: 100;
}
.xrv-c-head__inner {
    max-width: 1120px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
}
.xrv-c-head__brand {
    font-family: var(--xrv-cap);
    font-size: 22px;
    line-height: 1;
    letter-spacing: .02em;
    color: var(--xrv-ink);
    text-transform: uppercase;
}
.xrv-c-head__brand:hover { color: var(--xrv-ink); }
.xrv-c-head__brand span { color: var(--xrv-blue); }

/* ---------- dark hero ---------- */
.xrv-c-lead {
    background: var(--xrv-graphite);
    color: #ffffff;
    padding: 58px 20px 62px;
}
.xrv-c-lead__inner {
    max-width: 1000px;
    margin: 0 auto;
}
.xrv-e-kicker {
    display: inline-block;
    padding: 5px 12px;
    border-radius: var(--xrv-r-sm);
    background: rgba(47, 143, 255, .16);
    border-left: 3px solid var(--xrv-blue);
    font-size: 11px;
    font-weight: 700;
    letter-spacing: .2em;
    text-transform: uppercase;
    color: var(--xrv-blue);
    margin-bottom: 18px;
}
.xrv-e-title {
    font-family: var(--xrv-cap);
    font-size: clamp(28px, 5vw, 52px);
    line-height: 1.06;
    text-transform: uppercase;
    letter-spacing: -.01em;
    color: #ffffff;
    margin-bottom: 16px;
    max-width: 860px;
}
.xrv-e-mark { color: var(--xrv-blue); }
.xrv-e-mark::before { content: "["; color: var(--xrv-blue); margin-right: .16em; }
.xrv-e-mark::after { content: "]"; color: var(--xrv-blue); margin-left: .16em; }
.xrv-c-lead__sub {
    max-width: 660px;
    font-size: 16px;
    line-height: 1.7;
    color: #9aa6b3;
}
.xrv-c-lead__stamp {
    margin-top: 22px;
    display: inline-block;
    font-size: 12px;
    letter-spacing: .1em;
    text-transform: uppercase;
    color: #6b7683;
    border-top: 1px solid #2f3a45;
    padding-top: 10px;
}

/* ---------- numbered sections ---------- */
.xrv-c-doc {
    max-width: 1000px;
    margin: 0 auto;
    padding: 52px 20px 74px;
}
.xrv-c-sec {
    display: grid;
    grid-template-columns: 90px 1fr;
    gap: 0 26px;
    padding: 30px 0;
    border-bottom: 1px solid var(--xrv-edge);
}
.xrv-c-sec:last-child { border-bottom: none; }
.xrv-e-num {
    font-family: var(--xrv-cap);
    font-size: clamp(48px, 6vw, 64px);
    line-height: .9;
    color: rgba(107, 118, 131, .28);
    letter-spacing: -.03em;
    user-select: none;
}
.xrv-c-sec__body { min-width: 0; }
.xrv-c-sec__title {
    font-family: var(--xrv-cap);
    font-size: clamp(19px, 2.6vw, 26px);
    line-height: 1.16;
    text-transform: uppercase;
    color: var(--xrv-graphite);
    margin-bottom: 12px;
}
.xrv-c-sec__body h3 {
    font-family: var(--xrv-face);
    font-size: 17px;
    font-weight: 700;
    color: var(--xrv-slate);
    margin: 20px 0 8px;
}
.xrv-c-sec__body p {
    color: var(--xrv-mute);
    margin-bottom: 14px;
}
.xrv-c-sec__body p:last-child { margin-bottom: 0; }
.xrv-c-sec__body ul,
.xrv-c-sec__body ol {
    padding-left: 18px;
    margin: 0 0 15px;
    color: var(--xrv-mute);
}
.xrv-c-sec__body li { margin-bottom: 6px; }
.xrv-c-sec__body li::marker { color: var(--xrv-blue); }
.xrv-c-sec__body strong { color: var(--xrv-ink); font-weight: 700; }

@media (max-width: 720px) {
    .xrv-c-sec {
        grid-template-columns: 1fr;
        gap: 0;
        padding: 24px 0;
    }
    .xrv-e-num {
        font-size: 44px;
        margin-bottom: 2px;
    }
    .xrv-c-doc { padding: 34px 18px 56px; }
}

/* ---------- cards ---------- */
.xrv-c-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 14px;
    margin: 18px 0;
}
.xrv-c-card {
    background: var(--xrv-panel);
    border: 1px solid var(--xrv-edge);
    border-top: 3px solid var(--xrv-blue);
    border-radius: var(--xrv-r);
    padding: 16px 16px 18px;
    box-shadow: var(--xrv-cut2);
}
.xrv-c-card__title {
    font-family: var(--xrv-cap);
    font-size: 14px;
    text-transform: uppercase;
    color: var(--xrv-graphite);
    margin-bottom: 6px;
}
.xrv-c-card__body {
    font-size: 14px;
    line-height: 1.65;
    color: var(--xrv-mute);
}

/* ---------- callout ---------- */
.xrv-e-note {
    margin: 18px 0;
    padding: 16px 18px;
    background: var(--xrv-panel);
    border: 1px solid var(--xrv-edge);
    border-left: 5px solid var(--xrv-blue);
    border-radius: var(--xrv-r-sm);
    box-shadow: var(--xrv-cut1);
}
.xrv-e-note p { margin: 0; color: var(--xrv-slate); }

/* ---------- table ---------- */
.xrv-c-table {
    width: 100%;
    border-collapse: collapse;
    margin: 18px 0;
    background: var(--xrv-panel);
    border: 1px solid var(--xrv-edge);
    border-radius: var(--xrv-r);
    overflow: hidden;
}
.xrv-c-table th {
    background: var(--xrv-graphite);
    color: #ffffff;
    text-align: left;
    padding: 12px 14px;
    font-family: var(--xrv-cap);
    font-size: 12px;
    letter-spacing: .1em;
    text-transform: uppercase;
}
.xrv-c-table td {
    padding: 12px 14px;
    border-bottom: 1px solid var(--xrv-edge);
    color: var(--xrv-mute);
    font-size: 15px;
}
.xrv-c-table tr:nth-child(even) td { background: var(--xrv-paper); }
.xrv-c-table tr:last-child td { border-bottom: none; }

/* ---------- steps ---------- */
.xrv-c-steps {
    margin: 20px 0;
    display: grid;
    gap: 10px;
    counter-reset: xrv-step;
}
.xrv-c-steps__item {
    display: grid;
    grid-template-columns: 34px 1fr;
    gap: 14px;
    align-items: start;
    padding: 14px 16px;
    background: var(--xrv-panel);
    border: 1px solid var(--xrv-edge);
    border-radius: var(--xrv-r);
}
.xrv-c-steps__item::before {
    counter-increment: xrv-step;
    content: counter(xrv-step);
    width: 34px;
    height: 34px;
    display: grid;
    place-items: center;
    border-radius: var(--xrv-r-sm);
    background: var(--xrv-blue);
    color: #ffffff;
    font-family: var(--xrv-cap);
    font-size: 15px;
}
.xrv-c-steps__title {
    font-weight: 700;
    font-size: 15px;
    color: var(--xrv-ink);
    margin-bottom: 2px;
}
.xrv-c-steps__text {
    font-size: 14px;
    line-height: 1.62;
    color: var(--xrv-mute);
}

/* ---------- footer ---------- */
.xrv-c-foot {
    background: var(--xrv-graphite);
    border-top: 3px solid var(--xrv-blue);
    color: #8b96a3;
    padding: 30px 20px 26px;
}
.xrv-c-foot__inner {
    max-width: 940px;
    margin: 0 auto;
}
.xrv-u-center { text-align: center; }
.xrv-c-foot__nav {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 8px 24px;
    margin-bottom: 16px;
}
.xrv-c-foot__nav a {
    color: #ffffff;
    font-size: 12px;
    font-weight: 700;
    letter-spacing: .06em;
    border-bottom: 1px solid rgba(47, 143, 255, .55);
    padding-bottom: 2px;
}
.xrv-c-foot__nav a:hover { color: var(--xrv-blue); }
.xrv-c-foot__legal {
    font-size: 12px;
    line-height: 1.75;
    color: #7d8794;
    max-width: 760px;
    margin: 0 auto 12px;
}
.xrv-c-foot__copy {
    font-size: 12px;
    color: #6b7683;
}