:root {
    --bg: #020617;
    --card: #0f172a;
    --accent: #0ea5e9;
    --accent-soft: #38bdf8;
    --text: #e5e7eb;
    --muted: #9ca3af;
    --border: #1f2937;
}
body {
    margin: 0;
    font-family: system-ui, -apple-system, BlinkMacSystemFont, "SF Pro Text", sans-serif;
    background: radial-gradient(circle at top, #0b1120 0, #020617 55%, #000 100%);
    color: var(--text);
}

/* HEADER + NAV */
.header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 18px 32px 10px;
}
.header img { height: 40px; }
.login-btn {
    padding: 8px 18px;
    border-radius: 999px;
    background: var(--accent);
    color: #000;
    text-decoration: none;
    font-weight: 700;
    font-size: 0.9rem;
}
.nav-right-row {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    padding: 0 32px 10px;
}
.nav-item {
    display: flex;
    flex-direction: column;
    padding: 8px 12px;
    border-radius: 12px;
    background: rgba(15,23,42,0.9);
    border: 1px solid rgba(148,163,184,0.35);
}
.nav-icon {
    font-size: 20px;
    color: var(--accent-soft);
}
.nav-label {
    font-size: 0.8rem;
    color: var(--muted);
}
.nav-phone {
    font-size: 0.9rem;
    color: var(--accent-soft);
    text-decoration: none;
}

/* HERO */
.hero {
    padding: 24px 32px 10px;
}
.hero h1 {
    font-size: 2.0rem;
    margin: 0 0 6px;
    text-shadow: 0 0 12px rgba(14,165,233,0.45);
}
.hero p {
    margin: 0;
    color: var(--muted);
}

/* LAYOUT */
.page-shell {
    display: grid;
    grid-template-columns: 280px minmax(0, 1fr);
    gap: 24px;
    padding: 24px 32px 40px;
}

/* SIDEBAR */
.sidebar {
    position: sticky;
    top: 20px;
    align-self: flex-start;
    background: rgba(15,23,42,0.95);
    border-radius: 18px;
    border: 1px solid rgba(148,163,184,0.35);
    padding: 18px 16px;
    box-shadow: 0 18px 40px rgba(15,23,42,0.9);
}
.version-block {
    margin-bottom: 16px;
    font-size: 0.85rem;
    color: var(--muted);
}
.version-label {
    font-weight: 600;
    color: var(--accent-soft);
}
.toc-title {
    font-size: 0.9rem;
    font-weight: 700;
    margin-bottom: 8px;
}
.toc-list {
    list-style: none;
    padding: 0;
    margin: 0 0 16px;
}
.toc-list li { margin-bottom: 6px; }
.toc-list a {
    font-size: 0.85rem;
    color: var(--text);
    text-decoration: none;
}
.toc-list a:hover { color: var(--accent-soft); }
.manual-index-title {
    font-size: 0.9rem;
    font-weight: 700;
    margin: 12px 0 6px;
}
.manual-index-list {
    list-style: none;
    padding: 0;
    margin: 0;
}
.manual-index-list li { margin-bottom: 4px; }
.manual-index-list a {
    font-size: 0.85rem;
    color: var(--accent-soft);
    text-decoration: none;
}
.manual-index-list a:hover { text-decoration: underline; }

/* MAIN CARD */
.manual-card {
    max-width: 900px;
    margin: 0 auto;
    padding: 40px;
    background: rgba(15,23,42,0.92);
    border-radius: 22px;
    border: 1px solid rgba(148,163,184,0.25);
    box-shadow:
        0 0 25px rgba(14,165,233,0.25),
        0 20px 60px rgba(0,0,0,0.65);
    color: var(--text);
    line-height: 1.7;
}
.manual-card h1 {
    font-size: 2.4rem;
    margin-bottom: 20px;
    font-weight: 800;
    color: #fff;
    letter-spacing: 0.5px;
    text-shadow: 0 0 12px rgba(14,165,233,0.45);
}
.manual-card h2 {
    margin-top: 40px;
    margin-bottom: 12px;
    font-size: 1.45rem;
    font-weight: 700;
    color: var(--accent-soft);
    border-left: 4px solid var(--accent-soft);
    padding-left: 14px;
    text-shadow: 0 0 8px rgba(14,165,233,0.35);
}
.manual-card p {
    margin-bottom: 18px;
    font-size: 1.05rem;
    color: #cbd5e1;
}
.step-header {
    display: flex;
    align-items: center;
    gap: 8px;
}
.step-header .material-icons {
    font-size: 22px;
    color: var(--accent-soft);
}

/* FOOTER */
.footer-spacer { height: 40px; }
.footer-table {
    width: 100%;
    text-align: left;
    border-collapse: collapse;
    padding: 0 32px 24px;
}
.footer-table td {
    vertical-align: top;
    padding: 10px;
    color: var(--text);
}
.footer-table a {
    color: var(--accent-soft);
    text-decoration: none;
}
.footer-table a:hover { text-decoration: underline; }

/* PRINT */
@media print {
    body { background: #ffffff; color: #000000; }
    .header,
    .nav-right-row,
    .hero,
    .sidebar,
    .footer-table,
    .slider-wrapper { display: none !important; }
    .page-shell { display: block; padding: 0; }
    .manual-card {
        box-shadow: none;
        border-radius: 0;
        border: none;
        max-width: 100%;
        margin: 0;
        padding: 0;
    }
    .manual-card h1,
    .manual-card h2,
    .manual-card p { color: #000000; }
}