.description-page-body {
    background:
        radial-gradient(circle at top left, rgba(124, 147, 255, 0.08), transparent 26%),
        radial-gradient(circle at bottom right, rgba(160, 175, 255, 0.06), transparent 25%),
        linear-gradient(180deg, #f3f5f8 0%, #eef2f6 100%);
    color: #1c2430;
}

.dark .description-page-body {
    background:
        radial-gradient(circle at top left, rgba(120, 145, 255, 0.10), transparent 24%),
        radial-gradient(circle at bottom right, rgba(90, 110, 180, 0.10), transparent 28%),
        linear-gradient(180deg, #0f1724 0%, #182233 100%);
    color: #e7edf7;
}

.description-main {
    padding: 28px 0 60px;
}

.description-main .container {
    max-width: 1380px;
}

/* HERO */
.description-hero {
    position: relative;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    margin-bottom: 24px;
    padding: 34px 36px;
    border-radius: 28px;
    border: 1px solid rgba(18, 28, 45, 0.08);
    background:
        linear-gradient(135deg, rgba(255,255,255,0.92), rgba(248,250,253,0.82)),
        linear-gradient(180deg, #ffffff, #f7f9fc);
    box-shadow: 0 20px 45px rgba(17, 24, 39, 0.08);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
}

.dark .description-hero {
    border-color: rgba(255,255,255,0.08);
    background:
        linear-gradient(135deg, rgba(20,30,47,0.92), rgba(24,36,56,0.84)),
        linear-gradient(180deg, #152031, #1b2638);
    box-shadow: 0 22px 50px rgba(0, 0, 0, 0.30);
}

.description-hero__content {
    position: relative;
    z-index: 2;
    max-width: 820px;
}

.description-hero__badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 16px;
    padding: 9px 14px;
    border-radius: 999px;
    background: rgba(91, 124, 250, 0.10);
    border: 1px solid rgba(91, 124, 250, 0.14);
    color: #4e67d8;
    font-size: 12px;
    font-weight: 800;
    letter-spacing: .08em;
    text-transform: uppercase;
}

.dark .description-hero__badge {
    background: rgba(142, 167, 255, 0.10);
    border-color: rgba(142, 167, 255, 0.16);
    color: #b9c9ff;
}

.description-hero__title {
    margin: 0 0 14px;
    font-size: clamp(32px, 4vw, 54px);
    line-height: 1.02;
    font-weight: 900;
    letter-spacing: -0.04em;
    color: #111827;
}

.dark .description-hero__title {
    color: #f3f7fd;
}

.description-hero__subtitle {
    font-size: 16px;
    line-height: 1.8;
    color: #5f6b7a;
    max-width: 760px;
}

.dark .description-hero__subtitle {
    color: #9cadc4;
}

.description-hero__decor {
    position: relative;
    min-width: 220px;
    height: 180px;
    z-index: 1;
}

.description-hero__orb {
    position: absolute;
    border-radius: 999px;
    filter: blur(2px);
}

.description-hero__orb--one {
    top: 10px;
    right: 30px;
    width: 110px;
    height: 110px;
    background: radial-gradient(circle, rgba(91,124,250,0.28), rgba(91,124,250,0.02));
}

.description-hero__orb--two {
    right: 0;
    bottom: 0;
    width: 160px;
    height: 160px;
    background: radial-gradient(circle, rgba(156,175,255,0.18), rgba(156,175,255,0.01));
}

/* LAYOUT */
.description-shell {
    display: grid;
    grid-template-columns: 320px minmax(0, 1fr);
    gap: 24px;
    align-items: start;
}

/* SIDEBAR */
.description-sidebar {
    position: sticky;
    top: 100px;
}

.description-sidebar__inner {
    border-radius: 24px;
    border: 1px solid rgba(18, 28, 45, 0.08);
    background: rgba(255,255,255,0.82);
    box-shadow: 0 16px 40px rgba(15, 23, 42, 0.08);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    overflow: hidden;
}

.dark .description-sidebar__inner {
    border-color: rgba(255,255,255,0.08);
    background: rgba(18, 27, 40, 0.82);
    box-shadow: 0 18px 42px rgba(0, 0, 0, 0.28);
}

.description-sidebar__head {
    padding: 18px 18px 14px;
    border-bottom: 1px solid rgba(18, 28, 45, 0.07);
}

.dark .description-sidebar__head {
    border-bottom-color: rgba(255,255,255,0.06);
}

.description-sidebar__label {
    font-size: 12px;
    font-weight: 800;
    letter-spacing: .12em;
    text-transform: uppercase;
    color: #6a7380;
}

.dark .description-sidebar__label {
    color: #8fa0b7;
}

.description-sidebar__toggle {
    display: none;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    width: 100%;
    margin-top: 12px;
    padding: 12px 14px;
    border: 1px solid rgba(18, 28, 45, 0.08);
    border-radius: 14px;
    background: #fff;
    color: #1d2735;
    font-weight: 700;
    cursor: pointer;
}

.dark .description-sidebar__toggle {
    background: rgba(22, 31, 46, 0.9);
    border-color: rgba(255,255,255,0.08);
    color: #edf2fb;
}

.description-sidebar__toggle-icon {
    width: 10px;
    height: 10px;
    border-right: 2px solid currentColor;
    border-bottom: 2px solid currentColor;
    transform: rotate(45deg);
    transition: transform .25s ease;
}

.description-sidebar.is-open .description-sidebar__toggle-icon {
    transform: rotate(-135deg);
}

.description-sidebar__tabs {
    padding: 12px;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.description-sidebar__empty {
    padding: 18px;
    color: #6b7280;
}

.dark .description-sidebar__empty {
    color: #9fb0c7;
}

/* TABS */
.description-tab {
    display: flex;
    align-items: center;
    gap: 14px;
    width: 100%;
    padding: 14px 15px;
    border: 1px solid transparent;
    border-radius: 18px;
    background: linear-gradient(180deg, rgba(255,255,255,0.75), rgba(246,248,252,0.88));
    color: #243041;
    text-align: left;
    cursor: pointer;
    transition: transform .22s ease, box-shadow .22s ease, border-color .22s ease, background .22s ease;
}

.dark .description-tab {
    background: linear-gradient(180deg, rgba(30,41,59,0.92), rgba(20,29,44,0.96));
    color: #dde6f2;
}

.description-tab:hover {
    transform: translateY(-1px);
    border-color: rgba(91, 124, 250, 0.16);
    box-shadow: 0 10px 22px rgba(17, 24, 39, 0.07);
}

.dark .description-tab:hover {
    border-color: rgba(142, 167, 255, 0.16);
    box-shadow: 0 10px 22px rgba(0, 0, 0, 0.20);
}

.description-tab.is-active {
    border-color: rgba(91, 124, 250, 0.20);
    background: linear-gradient(135deg, rgba(91,124,250,0.12), rgba(255,255,255,0.92));
    box-shadow: 0 12px 28px rgba(91, 124, 250, 0.12);
}

.dark .description-tab.is-active {
    border-color: rgba(142, 167, 255, 0.20);
    background: linear-gradient(135deg, rgba(142,167,255,0.14), rgba(19,28,42,0.96));
    box-shadow: 0 12px 28px rgba(0, 0, 0, 0.20);
}

.description-tab__icon {
    flex: 0 0 42px;
    width: 42px;
    height: 42px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 14px;
    color: #5b7cfa;
    background: rgba(91, 124, 250, 0.10);
    border: 1px solid rgba(91, 124, 250, 0.10);
    box-shadow: inset 0 1px 0 rgba(255,255,255,0.7);
}

.dark .description-tab__icon {
    color: #a9bbff;
    background: rgba(142, 167, 255, 0.10);
    border-color: rgba(142, 167, 255, 0.12);
}

.description-tab__icon svg {
    width: 20px;
    height: 20px;
}

.description-tab__text {
    min-width: 0;
}

.description-tab__title {
    display: block;
    font-size: 14px;
    line-height: 1.45;
    font-weight: 700;
    word-break: break-word;
}

/* CONTENT */
.description-content {
    min-width: 0;
}

.description-pane {
    display: none;
    border-radius: 28px;
    border: 1px solid rgba(18, 28, 45, 0.08);
    background:
        linear-gradient(180deg, rgba(255,255,255,0.90), rgba(249,250,252,0.84));
    box-shadow: 0 18px 42px rgba(15, 23, 42, 0.08);
    overflow: hidden;
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
}

.dark .description-pane {
    border-color: rgba(255,255,255,0.08);
    background:
        linear-gradient(180deg, rgba(20,30,47,0.92), rgba(23,34,51,0.90));
    box-shadow: 0 20px 46px rgba(0, 0, 0, 0.28);
}

.description-pane.is-active {
    display: block;
    animation: descriptionFade .28s ease;
}

@keyframes descriptionFade {
    from {
        opacity: 0;
        transform: translateY(6px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.description-pane__header {
    padding: 28px 30px 20px;
    border-bottom: 1px solid rgba(18, 28, 45, 0.06);
    background: linear-gradient(180deg, rgba(255,255,255,0.22), rgba(255,255,255,0.04));
}

.dark .description-pane__header {
    border-bottom-color: rgba(255,255,255,0.06);
    background: linear-gradient(180deg, rgba(255,255,255,0.03), rgba(255,255,255,0.01));
}

.description-pane__eyebrow {
    margin-bottom: 10px;
    font-size: 12px;
    font-weight: 800;
    letter-spacing: .12em;
    text-transform: uppercase;
    color: #718096;
}

.dark .description-pane__eyebrow {
    color: #8da1bc;
}

.description-pane__title {
    margin: 0;
    font-size: clamp(24px, 2.4vw, 38px);
    line-height: 1.12;
    font-weight: 900;
    letter-spacing: -0.03em;
    color: #111827;
}

.dark .description-pane__title {
    color: #f1f6fd;
}

.description-pane__body {
    padding: 28px 30px 34px;
    color: #2a3442;
    font-size: 15px;
    line-height: 1.85;
}

.dark .description-pane__body {
    color: #d7e1ee;
}

.description-pane__body p,
.description-pane__body span,
.description-pane__body li,
.description-pane__body td,
.description-pane__body th {
    line-height: 1.85 !important;
}

.description-pane__body p {
    margin: 0 0 14px;
}

.description-pane__body p:last-child {
    margin-bottom: 0;
}

.description-pane__body h2,
.description-pane__body h3,
.description-pane__body h4 {
    margin: 28px 0 14px;
    line-height: 1.3;
    color: #111827;
}

.dark .description-pane__body h2,
.dark .description-pane__body h3,
.dark .description-pane__body h4 {
    color: #f1f6fd;
}

.description-pane__body ul,
.description-pane__body ol {
    margin: 16px 0;
    padding-left: 22px;
}

.description-pane__body li {
    margin-bottom: 8px;
}

.description-pane__body img {
    max-width: 100%;
    height: auto;
    border-radius: 16px;
    box-shadow: 0 12px 28px rgba(15,23,42,0.10);
    border: 1px solid rgba(17,24,39,0.08);
}

.dark .description-pane__body img {
    border-color: rgba(255,255,255,0.08);
    box-shadow: 0 14px 34px rgba(0,0,0,0.22);
}

.description-pane__body table {
    width: 100%;
    border-collapse: collapse;
    margin: 18px 0;
    overflow: hidden;
    border-radius: 16px;
}

.description-pane__body table td,
.description-pane__body table th {
    padding: 10px 12px;
    border: 1px solid rgba(17,24,39,0.08);
}

.dark .description-pane__body table td,
.dark .description-pane__body table th {
    border-color: rgba(255,255,255,0.08);
}

.description-pane__body blockquote {
    margin: 18px 0;
    padding: 18px 20px;
    border-left: 4px solid #6d86ff;
    border-radius: 14px;
    background: rgba(91, 124, 250, 0.08);
}

.dark .description-pane__body blockquote {
    background: rgba(142, 167, 255, 0.08);
}

/* MOBILE */
@media (max-width: 1100px) {
    .description-shell {
        grid-template-columns: 1fr;
    }

    .description-sidebar {
        position: relative;
        top: auto;
    }

    .description-sidebar__toggle {
        display: flex;
    }

    .description-sidebar__tabs {
        display: none;
        padding-top: 0;
    }

    .description-sidebar.is-open .description-sidebar__tabs {
        display: flex;
    }
}

@media (max-width: 768px) {
    .description-main {
        padding: 18px 0 44px;
    }

    .description-hero {
        padding: 24px 20px;
        border-radius: 22px;
        margin-bottom: 18px;
    }

    .description-hero__decor {
        display: none;
    }

    .description-hero__title {
        font-size: 32px;
    }

    .description-hero__subtitle {
        font-size: 14px;
        line-height: 1.75;
    }

    .description-sidebar__inner {
        border-radius: 20px;
    }

    .description-tab {
        padding: 12px 13px;
        border-radius: 16px;
    }

    .description-tab__icon {
        width: 38px;
        height: 38px;
        border-radius: 12px;
        flex-basis: 38px;
    }

    .description-pane,
    .description-pane__header,
    .description-pane__body {
        border-radius: 22px;
    }

    .description-pane__header {
        padding: 22px 20px 16px;
    }

    .description-pane__body {
        padding: 20px 20px 24px;
        font-size: 14px;
    }

    .description-pane__title {
        font-size: 26px;
    }
}

@media (max-width: 480px) {
    .description-hero {
        padding: 20px 16px;
    }

    .description-hero__badge {
        font-size: 11px;
        padding: 8px 12px;
    }

    .description-hero__title {
        font-size: 28px;
    }

    .description-sidebar__head {
        padding: 16px 14px 14px;
    }

    .description-sidebar__tabs {
        padding: 10px;
    }

    .description-tab {
        gap: 10px;
    }

    .description-pane__header {
        padding: 18px 16px 14px;
    }

    .description-pane__body {
        padding: 18px 16px 22px;
    }

    .description-pane__title {
        font-size: 23px;
    }
}