:root {
    --bdc-blue: #1171ef;
    --bdc-blue-dark: #0d5dc5;
    --bdc-dark: #0f172a;
    --bdc-gray: #f5f7fb;
    --bdc-border: rgba(15, 23, 42, 0.08);
    --shadow-md: 0 20px 60px rgba(15, 23, 42, 0.08);
    --shadow-lg: 0 35px 95px rgba(15, 23, 42, 0.12);
}

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

body {
    font-family: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    color: #1e293b;
    background: #fff;
    line-height: 1.6;
}

a {
    color: var(--bdc-blue);
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

.btn,
.btn-primary,
.btn-outline-primary,
.btn-success,
.btn-outline-light {
    transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease, color 0.2s ease, border-color 0.2s ease;
    will-change: transform;
}

.btn:hover,
.btn:focus-visible {
    transform: translateY(-1px);
    box-shadow: 0 12px 24px rgba(17, 113, 239, 0.18);
    text-decoration: none;
}

.btn:active {
    transform: translateY(0);
    box-shadow: 0 6px 12px rgba(17, 113, 239, 0.22);
}

.btn-primary {
    background: linear-gradient(135deg, #1171ef, #0d5dc5);
    border: none;
}

.btn-primary:hover,
.btn-primary:focus-visible {
    background: linear-gradient(135deg, #0d5dc5, #0b4da6);
}

.btn-success {
    background: linear-gradient(135deg, #1fa463, #178347);
    border: none;
}

.btn-success:hover,
.btn-success:focus-visible {
    background: linear-gradient(135deg, #178347, #136f3a);
}

.btn-outline-light {
    color: #0f172a;
    border-color: rgba(255,255,255,0.8);
}

.btn-outline-light:hover,
.btn-outline-light:focus-visible {
    color: #0f172a;
    background: rgba(255, 255, 255, 0.9);
    border-color: rgba(255,255,255,0.9);
}

.btn-outline-primary {
    border-color: #1171ef;
    color: #0d5dc5;
}

.btn-outline-primary:hover,
.btn-outline-primary:focus-visible {
    color: #fff;
    background: linear-gradient(135deg, #1171ef, #0d5dc5);
    border-color: transparent;
}

.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    border: 0;
}

.visually-hidden-focusable:active,
.visually-hidden-focusable:focus {
    position: static;
    width: auto;
    height: auto;
    margin: 0;
    overflow: visible;
    clip: auto;
}

.skip-link {
    position: absolute;
    top: 0;
    left: 0;
    padding: 0.5rem 1rem;
    background: #000;
    color: #fff;
    z-index: 999;
    transform: translateY(-100%);
    transition: transform 0.3s ease;
}

.skip-link:focus {
    transform: translateY(0);
}

.hp-field {
    position: absolute;
    left: -10000px;
    opacity: 0;
    pointer-events: none;
    height: 0;
    width: 0;
}

.site-header {
    position: sticky;
    top: 0;
    width: 100%;
    background: #fff;
    border-bottom: 1px solid var(--bdc-border);
    z-index: 300;
    box-shadow: 0 1px 15px rgba(15, 23, 42, 0.08);
}

.site-header__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    padding: 0.85rem 0;
}

.site-brand {
    font-weight: 700;
    font-size: 1.15rem;
    color: var(--bdc-dark);
    text-decoration: none;
    letter-spacing: -0.01em;
}

.site-nav__toggle {
    display: inline-flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 0.25rem;
    width: 44px;
    height: 44px;
    border-radius: 999px;
    border: 1px solid var(--bdc-border);
    background: #fff;
}

.site-nav__toggle-bar {
    width: 22px;
    height: 2px;
    background: var(--bdc-dark);
    border-radius: 4px;
}

.site-nav {
    position: fixed;
    top: 0;
    right: 0;
    width: min(320px, 85vw);
    height: 100vh;
    background: #fff;
    box-shadow: -25px 0 80px rgba(15, 23, 42, 0.2);
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
    padding: 1.5rem;
    transition: transform 0.35s ease;
    border-left: 1px solid var(--bdc-border);
    transform: translateX(100%);
    z-index: 400;
}

.site-nav__mobile-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-bottom: 0.75rem;
    border-bottom: 1px solid var(--bdc-border);
}

.site-nav__close {
    background: transparent;
    border: none;
    font-size: 1.75rem;
    line-height: 1;
    color: var(--bdc-dark);
}

.site-nav__list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 0.85rem;
}

.site-lang-switch {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    margin-left: 0.75rem;
    padding: 0.3rem 0.55rem;
    border-radius: 14px;
    background: linear-gradient(135deg, rgba(17, 113, 239, 0.12), rgba(13, 93, 197, 0.12));
    color: #0f172a;
    box-shadow: 0 12px 28px rgba(17, 113, 239, 0.16);
    border: 1px solid rgba(17, 113, 239, 0.18);
}

.site-lang-switch .lang-title {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    border-radius: 10px;
    background: linear-gradient(135deg, #1171ef, #0d5dc5);
    color: #f8fbff;
    box-shadow: inset 0 1px 0 rgba(255,255,255,0.22), 0 8px 18px rgba(17, 113, 239, 0.3);
    font-size: 0.9rem;
    border: none;
    cursor: pointer;
}

.lang-pill-row {
    display: inline-flex;
    align-items: center;
    gap: 0.2rem;
    transition: opacity 0.2s ease, transform 0.2s ease;
}

[data-lang-row][hidden] {
    display: none !important;
}

.lang-pill-row.is-open {
    display: inline-flex;
}

.lang-pill {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 38px;
    padding: 0.35rem 0.55rem;
    border-radius: 10px;
    border: 1px solid rgba(17, 113, 239, 0.18);
    font-weight: 700;
    font-size: 0.82rem;
    letter-spacing: 0.01em;
    color: #0f172a;
    background: #fff;
    box-shadow: 0 10px 25px rgba(17, 113, 239, 0.18);
    transition: transform 0.18s ease, box-shadow 0.18s ease, background 0.18s ease, color 0.18s ease, border-color 0.18s ease;
}

.lang-pill:hover {
    transform: translateY(-1px);
    box-shadow: 0 14px 32px rgba(17, 113, 239, 0.28);
    background: linear-gradient(135deg, #f2f7ff, #ffffff);
    text-decoration: none;
}

.lang-pill.is-active {
    background: linear-gradient(135deg, #1171ef, #0d5dc5);
    color: #fff;
    border-color: transparent;
    box-shadow: 0 16px 40px rgba(17, 113, 239, 0.35);
}

.site-nav__link {
    color: var(--bdc-dark);
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.35rem 0;
}

.site-nav__link i {
    font-size: 1rem;
    color: var(--bdc-blue);
}

.site-nav__link.is-active {
    color: var(--bdc-blue);
}

.site-nav__link::before {
    content: '';
    width: 6px;
    height: 6px;
    background: transparent;
    border-radius: 50%;
    transition: background 0.2s ease;
}

.site-nav__link.is-active::before {
    background: var(--bdc-blue);
}

.site-nav__actions {
    margin-top: auto;
}

.site-nav__overlay {
    position: fixed;
    inset: 0;
    background: rgba(4, 6, 21, 0.25);
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease;
    z-index: 200;
}

body.site-nav-open {
    overflow: hidden;
}

body.site-nav-open .site-nav {
    transform: translateX(0);
}

body.site-nav-open .site-nav__overlay {
    opacity: 1;
    visibility: visible;
}

.site-main {
    padding-top: 1.5rem;
}

.site-section {
    padding: 4rem 0;
}

.site-footer {
    border-top: 1px solid var(--bdc-border);
    padding: 1.5rem 0;
    background: #fff;
}

.site-footer a {
    color: inherit;
    text-decoration: underline;
}

@media (min-width: 992px) {
    .site-nav {
        position: static;
        width: auto;
        height: auto;
        flex-direction: row;
        align-items: center;
        gap: 1.5rem;
        padding: 0;
        box-shadow: none;
        border-left: none;
        transform: none !important;
    }
    .site-nav__list {
        flex-direction: row;
        gap: 1.5rem;
    }
    .site-lang-switch {
        margin-left: 1rem;
    }
    .site-nav__link::before {
        display: none;
    }
    .site-nav__mobile-bar,
    .site-nav__close,
    .site-nav__overlay,
    .site-nav__toggle {
        display: none;
    }
    .site-nav__actions {
        margin-top: 0;
    }
}

@media (max-width: 768px) {
    .site-header__inner {
        padding: 0.65rem 0;
    }
    .site-main {
        padding-top: 1rem;
    }
}