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

:root {
    --xqv-primary: #7a1f3d;
    --xqv-secondary: #b03a5b;
    --xqv-accent: #e8a0a8;
    --xqv-ink: #2a1620;
    --xqv-muted: #6b4a56;
    --xqv-line: #f0d8de;
    --xqv-paper: #fffafb;
    --xqv-surface: #fdf3f5;
    --xqv-panel: #ffffff;
    --xqv-night: #24121b;
    --xqv-ui: "Trebuchet MS", "Segoe UI", Tahoma, Arial, sans-serif;
    --xqv-serif: "Palatino Linotype", Palatino, Georgia, serif;
    --xqv-r1: 10px;
    --xqv-r2: 16px;
    --xqv-r3: 26px;
    --xqv-sh1: 0 8px 20px rgba(42, 22, 32, .07);
    --xqv-sh2: 0 16px 40px rgba(42, 22, 32, .11);
    --xqv-sh3: 0 26px 60px rgba(42, 22, 32, .16);
}

html { scroll-behavior: smooth; }

body {
    font-family: var(--xqv-serif);
    background:
        radial-gradient(circle at top left, rgba(176, 58, 91, .12), transparent 32%),
        linear-gradient(180deg, #fffafb 0%, #fdf3f5 100%);
    color: var(--xqv-ink);
    line-height: 1.74;
    font-size: 16px;
}

a {
    color: var(--xqv-primary);
    text-decoration: none;
    transition: color .2s ease, opacity .2s ease;
}
a:hover { color: var(--xqv-secondary); }

.xqv-topbar {
    position: sticky;
    top: 0;
    z-index: 20;
    padding: 17px 20px;
    background: rgba(255, 250, 251, .9);
    backdrop-filter: blur(14px);
    border-bottom: 2px solid var(--xqv-line);
}
.xqv-topbar-inner {
    max-width: 1160px;
    margin: 0 auto;
    text-align: center;
}
.xqv-topbar-logo {
    font-family: var(--xqv-ui);
    font-size: 22px;
    letter-spacing: .24em;
    text-transform: uppercase;
    font-weight: 700;
    color: var(--xqv-primary);
}

.xqv-hero {
    padding: 70px 20px 44px;
    text-align: center;
    color: var(--xqv-ink);
}
.xqv-hero-tag {
    display: inline-block;
    padding: 6px 18px;
    border-radius: var(--xqv-r1);
    border: 2px solid var(--xqv-accent);
    background: var(--xqv-panel);
    box-shadow: var(--xqv-sh1);
    font-family: var(--xqv-ui);
    font-size: 12px;
    font-weight: 700;
    letter-spacing: .2em;
    text-transform: uppercase;
    color: var(--xqv-secondary);
    margin-bottom: 20px;
}
.xqv-hero-title {
    max-width: 820px;
    margin: 0 auto 14px;
    font-size: clamp(29px, 5vw, 52px);
    line-height: 1.1;
    color: var(--xqv-primary);
}
.xqv-hero-sub {
    max-width: 660px;
    margin: 0 auto;
    color: var(--xqv-muted);
    font-size: 17px;
    line-height: 1.8;
}

.xqv-shell {
    max-width: 960px;
    margin: 0 auto;
    padding: 0 20px 84px;
}
.xqv-panel {
    background: linear-gradient(180deg, rgba(255, 255, 255, .96) 0%, rgba(255, 250, 251, .99) 100%);
    border: 2px solid var(--xqv-line);
    border-radius: var(--xqv-r3);
    box-shadow: var(--xqv-sh2);
    padding: 50px 54px;
}
@media (max-width: 740px) {
    .xqv-panel { padding: 28px 20px; border-radius: 20px; }
    .xqv-hero { padding-top: 54px; }
}

.xqv-doc-meta {
    display: block;
    margin-bottom: 26px;
    padding: 12px 18px;
    border-left: 5px solid var(--xqv-secondary);
    background: var(--xqv-surface);
    border-radius: 0 var(--xqv-r1) var(--xqv-r1) 0;
    font-family: var(--xqv-ui);
    font-size: 14px;
    color: var(--xqv-muted);
}
.xqv-doc-meta strong { color: var(--xqv-primary); }

.xqv-lead {
    font-size: 17px;
    color: var(--xqv-muted);
    margin-bottom: 16px;
}

.xqv-sect {
    padding-top: 8px;
    margin-bottom: 34px;
    border-top: 2px dotted var(--xqv-line);
}
.xqv-sect:first-of-type { border-top: none; }

.xqv-sect-title {
    font-family: var(--xqv-ui);
    font-size: clamp(20px, 3vw, 27px);
    line-height: 1.22;
    color: var(--xqv-primary);
    margin: 22px 0 12px;
    font-weight: 700;
}
.xqv-sect-title:first-child { margin-top: 0; }

.xqv-sub-title {
    font-family: var(--xqv-ui);
    font-size: 17px;
    line-height: 1.32;
    color: var(--xqv-ink);
    margin: 22px 0 8px;
    padding-left: 12px;
    border-left: 4px solid var(--xqv-accent);
    font-weight: 700;
}

.xqv-panel p {
    color: var(--xqv-muted);
    margin-bottom: 14px;
}
.xqv-panel strong { color: var(--xqv-ink); }

.xqv-list {
    list-style: none;
    margin: 0 0 16px;
    padding: 0;
    color: var(--xqv-muted);
}
.xqv-list > li {
    position: relative;
    padding-left: 24px;
    margin-bottom: 9px;
}
.xqv-list > li::before {
    content: "";
    position: absolute;
    left: 4px;
    top: 12px;
    width: 9px;
    height: 9px;
    border-radius: 2px;
    background: var(--xqv-secondary);
}

.xqv-sublist {
    list-style: none;
    margin: 9px 0 4px;
    padding: 0 0 0 8px;
    border-left: 2px solid var(--xqv-line);
}
.xqv-sublist > li {
    position: relative;
    padding-left: 20px;
    margin-bottom: 6px;
    font-size: 15px;
}
.xqv-sublist > li::before {
    content: "—";
    position: absolute;
    left: 2px;
    top: 0;
    color: var(--xqv-accent);
    font-weight: 700;
}

.xqv-remark {
    margin: 22px 0;
    padding: 18px 22px;
    border-radius: var(--xqv-r2);
    background: linear-gradient(135deg, rgba(232, 160, 168, .28), rgba(255, 255, 255, .96));
    border: 2px solid var(--xqv-accent);
    box-shadow: var(--xqv-sh1);
}
.xqv-remark p { margin: 0; color: var(--xqv-ink); }

.xqv-alert {
    margin: 22px 0;
    padding: 18px 22px;
    border-radius: var(--xqv-r2);
    background: var(--xqv-surface);
    border: 2px dashed var(--xqv-secondary);
}
.xqv-alert p { margin: 0; color: var(--xqv-ink); }

.xqv-outro {
    margin-top: 30px;
    padding-top: 18px;
    border-top: 2px solid var(--xqv-line);
    font-family: var(--xqv-ui);
    font-size: 13px;
    color: var(--xqv-muted);
}

.xqv-footer {
    margin-top: 40px;
    background: linear-gradient(180deg, var(--xqv-surface), #f7e3e8);
    color: var(--xqv-muted);
    padding: 22px 20px 18px;
    font-family: var(--xqv-ui);
    text-align: center;
    border-top: 2px solid var(--xqv-accent);
}
.xqv-footer-inner {
    max-width: 900px;
    margin: 0 auto;
}
.xqv-footer-links {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 6px 20px;
    margin-bottom: 10px;
}
.xqv-footer-links a {
    color: var(--xqv-primary);
    font-size: 11px;
    text-decoration: none;
}
.xqv-footer-links a:hover { color: var(--xqv-secondary); }
.xqv-footer-copy {
    font-size: 11px;
    color: var(--xqv-muted);
}
.xqv-footer-warning {
    margin-top: 7px;
    font-size: 10px;
    line-height: 1.5;
    color: rgba(107, 74, 86, .62);
}