:root {
    --guide-width: 1120px;
    --guide-reading: 760px;
}

.setup-guide-page {
    min-height: 100vh;
}

.setup-guide-hero {
    position: relative;
    isolation: isolate;
    width: min(var(--guide-width), calc(100% - 40px));
    margin: 0 auto;
    padding: 58px 0 74px;
    text-align: center;
}

.setup-guide-hero::before {
    content: "";
    position: absolute;
    z-index: -1;
    top: -260px;
    left: 50%;
    width: min(980px, 100vw);
    height: 650px;
    transform: translateX(-50%);
    background:
        radial-gradient(circle at 40% 42%, rgba(43, 137, 255, 0.14), transparent 32%),
        radial-gradient(circle at 64% 48%, rgba(51, 194, 223, 0.10), transparent 31%);
    filter: blur(14px);
    pointer-events: none;
}

.setup-guide-icon {
    width: 88px;
    height: 88px;
    border: 1px solid rgba(0, 0, 0, 0.09);
    border-radius: 21px;
    box-shadow: 0 24px 64px rgba(25, 73, 132, 0.18), inset 0 1px 0 rgba(255,255,255,0.44);
}

.setup-guide-eyebrow {
    margin: 24px 0 12px;
    color: var(--blue);
    font-size: 12px;
    font-weight: 750;
    letter-spacing: 0.13em;
    text-transform: uppercase;
}

.setup-guide-hero h1 {
    max-width: 860px;
    margin: 0 auto;
    font-size: clamp(42px, 6vw, 68px);
}

.setup-guide-lead {
    max-width: 720px;
    margin: 22px auto 0;
    color: var(--muted);
    font-size: clamp(17px, 2vw, 21px);
    line-height: 1.65;
    letter-spacing: -0.016em;
}

.setup-guide-actions {
    width: fit-content;
    max-width: 100%;
    margin: 30px auto 0;
    padding: 5px;
    display: flex;
    gap: 4px;
    border: 1px solid var(--glass-border);
    border-radius: 999px;
    background: rgba(255,255,255,0.40);
    box-shadow: inset 0 0 0 .5px rgba(0,0,0,.08), inset 1px 1px 1px rgba(255,255,255,.82), 0 20px 48px var(--glass-shadow);
    backdrop-filter: blur(22px) saturate(1.25);
    -webkit-backdrop-filter: blur(22px) saturate(1.25);
}

.setup-guide-shell {
    width: min(var(--guide-width), calc(100% - 40px));
    margin: 0 auto;
    padding-bottom: 120px;
    display: grid;
    grid-template-columns: 250px minmax(0, 1fr);
    align-items: start;
    gap: 34px;
}

.setup-guide-toc {
    position: sticky;
    top: 24px;
    max-height: calc(100vh - 48px);
    padding: 18px;
    overflow: auto;
    border: 1px solid var(--glass-border);
    border-radius: 24px;
    background: var(--glass-surface-strong);
    box-shadow: inset 0 0 0 .5px rgba(0,0,0,.06), inset 1px 1px 1px rgba(255,255,255,.78), 0 22px 60px var(--glass-shadow);
    backdrop-filter: blur(22px) saturate(1.18);
    -webkit-backdrop-filter: blur(22px) saturate(1.18);
}

.setup-guide-toc-label {
    margin: 3px 8px 12px;
    color: var(--muted);
    font-size: 11px;
    font-weight: 750;
    letter-spacing: .12em;
    text-transform: uppercase;
}

.setup-guide-toc nav {
    display: grid;
    gap: 3px;
}

.setup-guide-toc a {
    padding: 9px 10px;
    border-radius: 11px;
    color: var(--muted);
    font-size: 13px;
    line-height: 1.35;
    text-decoration: none;
    transition: color .2s ease, background .2s ease;
}

.setup-guide-toc a:hover,
.setup-guide-toc a.is-active {
    color: var(--text);
    background: rgba(8,124,240,.09);
}

.setup-guide-toc a.is-active {
    color: var(--blue);
    font-weight: 650;
}

.setup-guide-toc-back {
    margin-top: 14px;
    padding-top: 14px;
    border-top: 1px solid var(--border);
}

.setup-guide-toc-back a {
    display: block;
    color: var(--text);
    font-weight: 650;
}

.setup-guide-mobile-toc {
    display: none;
}

.setup-guide-content {
    min-width: 0;
}

.setup-guide-section {
    scroll-margin-top: 24px;
    margin-bottom: 18px;
    padding: 46px 48px;
    border: 1px solid var(--glass-border);
    border-radius: 28px;
    background: var(--glass-surface-strong);
    box-shadow: inset 0 0 0 .5px rgba(0,0,0,.06), inset 1px 1px 1px rgba(255,255,255,.78), 0 25px 68px var(--glass-shadow);
    backdrop-filter: blur(22px) saturate(1.18);
    -webkit-backdrop-filter: blur(22px) saturate(1.18);
}

.setup-guide-section-number {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 34px;
    height: 25px;
    margin-bottom: 14px;
    padding: 0 9px;
    border-radius: 999px;
    background: rgba(8,124,240,.10);
    color: var(--blue);
    font-size: 11px;
    font-weight: 750;
    letter-spacing: .05em;
}

.setup-guide-section h2 {
    max-width: none;
    margin: 0 0 22px;
    text-align: left;
    font-size: clamp(28px, 4vw, 38px);
    letter-spacing: -.04em;
}

.setup-guide-section h3 {
    margin: 34px 0 12px;
    font-size: 20px;
    letter-spacing: -.025em;
}

.setup-guide-section p,
.setup-guide-section li {
    color: var(--muted);
    font-size: 15px;
    line-height: 1.75;
}

.setup-guide-section p { margin: 0 0 16px; }
.setup-guide-section p:last-child { margin-bottom: 0; }
.setup-guide-section strong { color: var(--text); }
.setup-guide-section ul,
.setup-guide-section ol { margin: 14px 0 20px; padding-left: 24px; }
.setup-guide-section li + li { margin-top: 7px; }

.setup-guide-role-grid,
.setup-guide-download-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px;
    margin: 24px 0;
}

.setup-guide-role,
.setup-guide-download-card,
.setup-guide-trouble {
    padding: 22px;
    border: 1px solid var(--border);
    border-radius: 18px;
    background: rgba(255,255,255,.34);
}

.setup-guide-role strong,
.setup-guide-download-card strong {
    display: block;
    margin-bottom: 7px;
    font-size: 16px;
}

.setup-guide-role p,
.setup-guide-download-card p { margin: 0; font-size: 13px; line-height: 1.65; }

.setup-guide-flow,
.setup-guide-order {
    margin: 22px 0;
    padding: 19px 22px;
    overflow-x: auto;
    border: 1px solid rgba(8,124,240,.14);
    border-radius: 16px;
    background: rgba(8,124,240,.06);
    color: var(--text);
    font-size: 13px;
    font-weight: 650;
    line-height: 1.8;
    text-align: center;
    white-space: nowrap;
}

.setup-guide-links {
    display: grid;
    gap: 8px;
    margin-top: 14px;
}

.setup-guide-link {
    min-height: 42px;
    padding: 10px 13px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    border: 1px solid var(--border);
    border-radius: 12px;
    background: rgba(255,255,255,.42);
    color: var(--text);
    font-size: 13px;
    font-weight: 650;
    text-decoration: none;
    transition: border-color .2s ease, background .2s ease, transform .2s ease;
}

.setup-guide-link::after { content: "↗"; color: var(--blue); }
.setup-guide-link:hover { transform: translateY(-1px); border-color: rgba(8,124,240,.30); background: rgba(255,255,255,.72); }

.setup-guide-note,
.setup-guide-warning {
    margin: 22px 0;
    padding: 18px 20px;
    border-radius: 16px;
    font-size: 14px;
    line-height: 1.7;
}

.setup-guide-note {
    border: 1px solid rgba(8,124,240,.15);
    background: rgba(8,124,240,.06);
    color: var(--muted);
}

.setup-guide-warning {
    border: 1px solid rgba(255,149,0,.23);
    background: rgba(255,149,0,.08);
    color: var(--muted);
}

.setup-guide-table-wrap {
    margin: 20px 0;
    overflow-x: auto;
    border: 1px solid var(--border);
    border-radius: 16px;
}

.setup-guide-table {
    width: 100%;
    border-collapse: collapse;
    min-width: 560px;
}

.setup-guide-table th,
.setup-guide-table td {
    padding: 12px 15px;
    border-bottom: 1px solid var(--border);
    color: var(--muted);
    font-size: 13px;
    line-height: 1.45;
    text-align: left;
}

.setup-guide-table th { background: rgba(8,124,240,.055); color: var(--text); font-weight: 700; }
.setup-guide-table tr:last-child td { border-bottom: 0; }
.setup-guide-table code { white-space: nowrap; }

.setup-guide-section code {
    padding: 2px 6px;
    border-radius: 6px;
    background: rgba(29,29,31,.06);
    color: var(--text);
    font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
    font-size: .9em;
}

.setup-guide-image-button {
    width: 100%;
    margin: 22px 0 12px;
    padding: 20px;
    border: 1px solid var(--glass-border);
    border-radius: 22px;
    background: rgba(233,236,241,.64);
    box-shadow: inset 0 0 0 .5px rgba(0,0,0,.06), inset 1px 1px 1px rgba(255,255,255,.82), 0 24px 64px rgba(30,39,55,.11);
    cursor: zoom-in;
}

.setup-guide-image-button img {
    display: block;
    width: 100%;
    height: auto;
    filter: drop-shadow(0 20px 34px rgba(0,0,0,.20));
}

.setup-guide-image-caption {
    margin: 0 0 24px;
    color: var(--muted);
    font-size: 12px;
    text-align: center;
}

.setup-guide-troubles {
    display: grid;
    gap: 12px;
    margin-top: 24px;
}

.setup-guide-trouble h3 { margin: 0 0 10px; font-size: 17px; }
.setup-guide-trouble ul,
.setup-guide-trouble ol { margin-bottom: 0; }

.setup-guide-footer-actions {
    margin-top: 22px;
    padding-top: 22px;
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    border-top: 1px solid var(--border);
}

.setup-guide-footer-actions a {
    min-height: 42px;
    padding: 0 15px;
    display: inline-flex;
    align-items: center;
    border: 1px solid var(--border);
    border-radius: 999px;
    background: rgba(255,255,255,.42);
    color: var(--text);
    font-size: 13px;
    font-weight: 650;
    text-decoration: none;
}

.setup-guide-lightbox {
    width: min(1180px, calc(100vw - 36px));
    max-width: none;
    max-height: calc(100vh - 36px);
    padding: 0;
    overflow: visible;
    border: 0;
    background: transparent;
}

.setup-guide-lightbox::backdrop {
    background: rgba(4,6,10,.78);
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
}

.setup-guide-lightbox-inner {
    position: relative;
    padding: 24px;
    border: 1px solid rgba(255,255,255,.22);
    border-radius: 24px;
    background: rgba(23,25,29,.92);
    box-shadow: 0 36px 110px rgba(0,0,0,.55);
}

.setup-guide-lightbox img {
    display: block;
    width: 100%;
    max-height: calc(100vh - 86px);
    object-fit: contain;
}

.setup-guide-lightbox-close {
    position: absolute;
    z-index: 2;
    top: 11px;
    right: 11px;
    width: 36px;
    height: 36px;
    border: 1px solid rgba(255,255,255,.22);
    border-radius: 50%;
    background: rgba(17,18,20,.72);
    color: #fff;
    font: 600 20px/1 -apple-system, BlinkMacSystemFont, sans-serif;
    cursor: pointer;
}

@media (max-width: 820px) {
    .setup-guide-shell { grid-template-columns: 1fr; }
    .setup-guide-toc { display: none; }
    .setup-guide-mobile-toc {
        display: block;
        margin-bottom: 18px;
        border: 1px solid var(--glass-border);
        border-radius: 20px;
        background: var(--glass-surface-strong);
        box-shadow: inset 0 0 0 .5px rgba(0,0,0,.06), inset 1px 1px 1px rgba(255,255,255,.78), 0 18px 50px var(--glass-shadow);
    }
    .setup-guide-mobile-toc summary {
        padding: 18px 20px;
        color: var(--text);
        font-size: 14px;
        font-weight: 700;
        cursor: pointer;
    }
    .setup-guide-mobile-toc nav { padding: 0 12px 14px; display: grid; gap: 3px; }
    .setup-guide-mobile-toc a { padding: 9px 10px; border-radius: 10px; color: var(--muted); font-size: 13px; text-decoration: none; }
}

@media (max-width: 760px) {
    .setup-guide-hero { width: min(100% - 28px, var(--guide-width)); padding: 42px 0 58px; }
    .setup-guide-icon { width: 76px; height: 76px; border-radius: 18px; }
    .setup-guide-hero h1 { font-size: clamp(38px, 12vw, 54px); }
    .setup-guide-lead { max-width: 340px; font-size: 17px; }
    .setup-guide-actions { width: min(100%, 310px); flex-direction: column; border-radius: 29px; }
    .setup-guide-actions .button { width: 100%; }
    .setup-guide-shell { width: min(100% - 28px, var(--guide-width)); padding-bottom: 80px; gap: 18px; }
    .setup-guide-section { margin-bottom: 14px; padding: 30px 22px; border-radius: 22px; }
    .setup-guide-section h2 { font-size: 29px; }
    .setup-guide-section h3 { margin-top: 28px; font-size: 19px; }
    .setup-guide-section p,
    .setup-guide-section li { font-size: 14px; line-height: 1.72; }
    .setup-guide-role-grid,
    .setup-guide-download-grid { grid-template-columns: 1fr; }
    .setup-guide-flow,
    .setup-guide-order { text-align: left; }
    .setup-guide-image-button { padding: 12px; border-radius: 18px; }
    .setup-guide-footer-actions { flex-direction: column; }
    .setup-guide-footer-actions a { justify-content: center; }
    .setup-guide-lightbox { width: calc(100vw - 20px); }
    .setup-guide-lightbox-inner { padding: 10px; border-radius: 17px; }
    .setup-guide-lightbox-close { top: 7px; right: 7px; }
}

@media (prefers-color-scheme: dark) {
    .setup-guide-role,
    .setup-guide-download-card,
    .setup-guide-trouble,
    .setup-guide-link,
    .setup-guide-footer-actions a { background: rgba(255,255,255,.045); }
    .setup-guide-link:hover { background: rgba(255,255,255,.08); }
    .setup-guide-image-button { background: rgba(21,23,27,.72); }
    .setup-guide-section code { background: rgba(255,255,255,.09); }
}

@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
}