:root {
    --sa-bg: #f4f1ea;
    --sa-panel-bg: #171717;
    --sa-panel-text: #ffffff;
    --sa-panel-muted: rgba(255, 255, 255, 0.66);
    --sa-surface: #ffffff;
    --sa-surface-soft: #faf7f0;
    --sa-text: #201f1d;
    --sa-muted: #6d6860;
    --sa-border: rgba(32, 31, 29, 0.12);
    --sa-accent: #b7791f;
    --sa-accent-soft: rgba(183, 121, 31, 0.12);
    --sa-radius-lg: 30px;
    --sa-radius-md: 22px;
    --sa-shadow: 0 24px 70px rgba(0, 0, 0, 0.10);
    --sa-left-width: 420px;
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    background:
        radial-gradient(circle at 72% 8%, var(--sa-accent-soft), transparent 34rem),
        var(--sa-bg);
    color: var(--sa-text);
    font-family: Arial, Helvetica, sans-serif;
    line-height: 1.7;
}

a {
    color: inherit;
    text-decoration: none;
}

img {
    max-width: 100%;
    display: block;
}

.sa-layout {
    min-height: 100vh;
}

.sa-fixed-panel {
    position: fixed;
    inset: 0 auto 0 0;
    width: var(--sa-left-width);
    min-height: 100vh;
    background:
        linear-gradient(160deg, rgba(255, 255, 255, 0.06), transparent 38%),
        var(--sa-panel-bg);
    color: var(--sa-panel-text);
    overflow-y: auto;
}

.sa-panel-inner {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    gap: 34px;
    padding: 34px;
}

.sa-brand {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    width: fit-content;
    font-weight: 900;
    letter-spacing: -0.03em;
}

.sa-brand-mark {
    width: 38px;
    height: 38px;
    border-radius: 14px;
    background: var(--sa-accent);
    box-shadow: 0 16px 34px rgba(0, 0, 0, 0.28);
}

.sa-position {
    margin-top: auto;
}

.sa-position h1 {
    margin: 0;
    font-size: clamp(34px, 4.8vw, 58px);
    line-height: 0.95;
    letter-spacing: -0.06em;
}

.sa-position p {
    margin: 18px 0 0;
    color: var(--sa-panel-muted);
    font-size: 16px;
}

.sa-eyebrow,
.sa-section-label,
.sa-section-head span,
.sa-contact-box span {
    display: inline-flex;
    width: fit-content;
    margin-bottom: 14px;
    padding: 7px 11px;
    border-radius: 999px;
    background: var(--sa-accent-soft);
    color: var(--sa-accent);
    font-size: 12px;
    font-weight: 900;
    letter-spacing: 0.04em;
    text-transform: uppercase;
}

.sa-side-nav {
    display: grid;
    gap: 9px;
    margin-top: auto;
}

.sa-side-nav a {
    padding: 11px 13px;
    border: 1px solid rgba(255, 255, 255, 0.11);
    border-radius: 14px;
    color: var(--sa-panel-muted);
    font-size: 14px;
}

.sa-side-nav a:hover {
    color: var(--sa-panel-text);
    border-color: rgba(255, 255, 255, 0.28);
    background: rgba(255, 255, 255, 0.06);
}

.sa-contact-box {
    padding: 18px;
    border-radius: 20px;
    background: rgba(255, 255, 255, 0.07);
    border: 1px solid rgba(255, 255, 255, 0.10);
}

.sa-contact-box a,
.sa-contact-box strong {
    display: block;
    color: var(--sa-panel-text);
    font-weight: 800;
    word-break: break-word;
}

.sa-scroll-panel {
    min-height: 100vh;
    margin-left: var(--sa-left-width);
    padding: 44px;
}

.sa-intro-block,
.sa-reading-area,
.sa-final-panel {
    max-width: 980px;
}

.sa-intro-block {
    padding: 42px;
    border-radius: var(--sa-radius-lg);
    background: var(--sa-surface);
    border: 1px solid var(--sa-border);
    box-shadow: var(--sa-shadow);
}

.sa-intro-block h2,
.sa-article-header h2 {
    margin: 0;
    max-width: 880px;
    font-size: clamp(38px, 5.8vw, 74px);
    line-height: 0.95;
    letter-spacing: -0.07em;
}

.sa-intro-block p,
.sa-article-header p {
    max-width: 760px;
    margin: 22px 0 0;
    color: var(--sa-muted);
    font-size: 18px;
}

.sa-content-stream {
    display: grid;
    gap: 18px;
    max-width: 980px;
    margin-top: 28px;
}

.sa-authority-block {
    display: grid;
    grid-template-columns: 74px 1fr;
    gap: 22px;
    padding: 30px;
    border-radius: var(--sa-radius-lg);
    background: var(--sa-surface);
    border: 1px solid var(--sa-border);
    box-shadow: 0 18px 52px rgba(0, 0, 0, 0.06);
}

.sa-authority-block:nth-child(even) {
    background: var(--sa-surface-soft);
}

.sa-block-index,
.sa-article-number {
    display: grid;
    place-items: center;
    width: 54px;
    height: 54px;
    border-radius: 18px;
    background: var(--sa-accent-soft);
    color: var(--sa-accent);
    font-weight: 900;
}

.sa-authority-block h2 {
    margin: 0 0 12px;
    font-size: clamp(24px, 3vw, 36px);
    line-height: 1.1;
    letter-spacing: -0.04em;
}

.sa-authority-block p {
    margin: 0 0 14px;
    color: var(--sa-muted);
}

.sa-authority-block p:last-child {
    margin-bottom: 0;
}

.sa-section {
    max-width: 980px;
    margin-top: 48px;
}

.sa-section-head {
    margin-bottom: 18px;
}

.sa-section-head h2 {
    margin: 0;
    font-size: clamp(30px, 4vw, 48px);
    line-height: 1;
    letter-spacing: -0.05em;
}

.sa-article-stream {
    display: grid;
    gap: 14px;
}

.sa-article-row {
    display: grid;
    grid-template-columns: 68px 1fr;
    gap: 20px;
    padding: 24px;
    border-radius: var(--sa-radius-md);
    background: var(--sa-surface);
    border: 1px solid var(--sa-border);
}

.sa-article-text h3 {
    margin: 0 0 8px;
    font-size: 24px;
    line-height: 1.15;
    letter-spacing: -0.03em;
}

.sa-article-text p {
    margin: 0;
    color: var(--sa-muted);
}

.sa-article-text a {
    display: inline-flex;
    margin-top: 12px;
    color: var(--sa-accent);
    font-weight: 900;
}

.sa-faq-list {
    display: grid;
    gap: 12px;
}

.sa-faq-item {
    padding: 18px 20px;
    border-radius: 18px;
    background: var(--sa-surface);
    border: 1px solid var(--sa-border);
}

.sa-faq-item summary {
    cursor: pointer;
    font-weight: 900;
}

.sa-faq-item p {
    margin-bottom: 0;
    color: var(--sa-muted);
}

.sa-final-panel {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 24px;
    margin-top: 48px;
    padding: 34px;
    border-radius: var(--sa-radius-lg);
    background: var(--sa-panel-bg);
    color: var(--sa-panel-text);
}

.sa-final-panel p {
    color: var(--sa-panel-muted);
}

.sa-final-panel a,
.sa-link-panel a {
    display: inline-flex;
    justify-content: center;
    align-items: center;
    min-height: 42px;
    padding: 10px 16px;
    border-radius: 999px;
    background: var(--sa-accent);
    color: #fff;
    font-weight: 900;
}

.sa-reading-area {
    margin: 0;
}

.sa-article-header {
    padding: 42px;
    border-radius: var(--sa-radius-lg);
    background: var(--sa-surface);
    border: 1px solid var(--sa-border);
    box-shadow: var(--sa-shadow);
}

.sa-meta-line {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 24px;
}

.sa-meta-line span {
    padding: 9px 12px;
    border-radius: 999px;
    background: var(--sa-surface-soft);
    border: 1px solid var(--sa-border);
    color: var(--sa-muted);
    font-size: 13px;
    font-weight: 800;
}

.sa-cover {
    margin: 28px 0 0;
    border-radius: var(--sa-radius-lg);
    overflow: hidden;
    border: 1px solid var(--sa-border);
    box-shadow: var(--sa-shadow);
}

.sa-cover img {
    width: 100%;
    max-height: 480px;
    object-fit: cover;
}

.sa-appendix {
    padding-top: 10px;
}

.sa-link-panel {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    max-width: 980px;
    margin-top: 34px;
}

.sa-link-panel a {
    background: var(--sa-panel-bg);
}

html[dir="rtl"] .sa-fixed-panel {
    inset: 0 0 0 auto;
}

html[dir="rtl"] .sa-scroll-panel {
    margin-left: 0;
    margin-right: var(--sa-left-width);
}

html[dir="rtl"] body {
    direction: rtl;
    text-align: right;
}

html[lang="ar"] body {
    font-family: Tahoma, Arial, Helvetica, sans-serif;
}

@media (max-width: 980px) {
    .sa-fixed-panel {
        position: relative;
        inset: auto;
        width: auto;
        min-height: auto;
    }

    .sa-panel-inner {
        min-height: auto;
        padding: 28px;
    }

    .sa-position {
        margin-top: 12px;
    }

    .sa-scroll-panel,
    html[dir="rtl"] .sa-scroll-panel {
        margin-left: 0;
        margin-right: 0;
        padding: 26px;
    }

    .sa-side-nav {
        grid-template-columns: repeat(2, 1fr);
    }

    .sa-final-panel {
        align-items: flex-start;
        flex-direction: column;
    }
}

@media (max-width: 640px) {
    .sa-panel-inner,
    .sa-scroll-panel {
        padding: 18px;
    }

    .sa-intro-block,
    .sa-article-header,
    .sa-authority-block,
    .sa-final-panel {
        padding: 22px;
        border-radius: 22px;
    }

    .sa-authority-block,
    .sa-article-row {
        grid-template-columns: 1fr;
    }

    .sa-side-nav {
        grid-template-columns: 1fr;
    }

    .sa-intro-block h2,
    .sa-article-header h2,
    .sa-position h1 {
        font-size: clamp(34px, 11vw, 48px);
    }
}