/* Footer: an editorial contact desk for a serious training institution. */
.footer {
    --footer-ink: #102f4c;
    --footer-muted: #526579;
    --footer-accent: #0369a1;
    --footer-line: #cbd8e2;
    --footer-surface: #f2f6f8;
    position: relative;
    padding: 0;
    color: var(--footer-ink);
    background: var(--footer-surface);
    border-top: 1px solid #d7e2e9;
    font-family: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
}

.footer-bg,
.footer-bg-grid {
    display: none;
}

.footer-container {
    max-width: 1180px;
    padding: 0 24px;
}

.footer-friendly-links {
    display: grid;
    grid-template-columns: 132px minmax(0, 1fr);
    align-items: center;
    margin: 0;
    padding: 22px 0 20px;
    border-bottom: 1px solid var(--footer-line);
}

.footer-friendly-links-title {
    display: flex;
    align-items: center;
    gap: 7px;
    margin: 0;
    color: var(--footer-ink);
    font-size: 14px;
    font-weight: 700;
    line-height: 1.4;
}

.footer-friendly-links-title .footer-icon {
    display: none;
}

.footer-friendly-links-list {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0;
    list-style: none;
}

.footer-friendly-link-item {
    display: flex;
    align-items: center;
    min-height: 24px;
}

.footer-friendly-link-item + .footer-friendly-link-item {
    margin-left: 18px;
    padding-left: 18px;
    border-left: 1px solid #cbd8e2;
}

.footer-friendly-link-item a {
    display: inline-block;
    padding: 2px 0 3px;
    color: var(--footer-muted) !important;
    background: transparent;
    border-bottom: 1px solid transparent;
    border-radius: 0;
    font-size: 14px;
    text-decoration: none;
    -webkit-tap-highlight-color: transparent;
    transition: color .2s ease, border-color .2s ease;
}

.footer-friendly-link-item a:link,
.footer-friendly-link-item a:visited,
.footer-friendly-link-item a:active {
    color: var(--footer-muted) !important;
    background: transparent !important;
}

.footer-friendly-link-item a:hover {
    color: var(--footer-accent) !important;
    background: transparent !important;
    border-bottom-color: var(--footer-accent);
}

.footer-friendly-link-item a:focus-visible {
    color: var(--footer-accent) !important;
    background: transparent !important;
    border-bottom-color: var(--footer-accent);
    outline: 2px solid var(--footer-accent);
    outline-offset: 4px;
}

.footer-main {
    display: grid;
    grid-template-columns: minmax(240px, 1.05fr) minmax(170px, .65fr) minmax(360px, 1.3fr);
    gap: clamp(32px, 6vw, 88px);
    margin: 0;
    padding: 48px 0 54px;
}

.footer-brand,
.footer-links,
.footer-contact {
    grid-column: auto;
}

.footer-logo-container {
    display: block;
    margin: 0 0 15px;
}

.footer-logo-text {
    color: var(--footer-ink);
    font-size: 24px;
    font-weight: 800;
    letter-spacing: .04em;
    line-height: 1.2;
}

.footer-logo-text span {
    color: var(--footer-accent);
    background: none;
    -webkit-text-fill-color: currentColor;
}

.footer-description {
    max-width: 300px;
    margin: 0 0 26px;
    color: var(--footer-muted);
    font-size: 14px;
    line-height: 1.8;
}

.footer-qrcode-container {
    display: flex;
    gap: 18px;
}

.footer-qrcode-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
}

.footer-qrcode-box {
    width: 78px;
    height: 78px;
    padding: 5px;
    background: #fff;
    border: 1px solid var(--footer-line);
    border-radius: 2px;
    box-shadow: none;
    transition: border-color .2s ease;
}

.footer-qrcode-box:hover {
    border-color: var(--footer-accent);
    transform: none;
}

.footer-qrcode-placeholder {
    background: #fff;
}

.footer-qrcode-placeholder img {
    display: block;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.footer-qrcode-label {
    color: var(--footer-muted);
    font-size: 12px;
}

.footer-section-title {
    margin: 0 0 22px;
    padding: 0 0 10px;
    color: var(--footer-ink);
    border-bottom: 1px solid var(--footer-line);
    font-size: 16px;
    font-weight: 700;
    line-height: 1.4;
}

.footer-section-title::after {
    display: none;
}

.footer-links-list {
    display: grid;
    grid-template-columns: repeat(2, minmax(86px, 1fr));
    gap: 15px 28px;
    list-style: none;
}

.footer-links-list a {
    display: inline-block;
    color: var(--footer-muted);
    font-size: 14px;
    line-height: 1.5;
    text-decoration: none;
    transition: color .2s ease;
}

.footer-links-list a:hover,
.footer-links-list a:focus-visible {
    color: var(--footer-accent);
    transform: none;
}

.footer-contact-row {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 28px 30px;
    padding: 0;
    background: transparent;
    border: 0;
    border-radius: 0;
}

.footer-contact-item {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    min-width: 0;
    max-width: none;
}

.footer-contact-item:last-child {
    grid-column: 1 / -1;
}

.footer-contact-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex: 0 0 20px;
    width: 20px;
    height: 20px;
    margin-top: 1px;
    color: var(--footer-accent);
    background: transparent;
    border: 0;
    border-radius: 0;
}

.footer-contact-icon .footer-icon {
    display: block;
    width: 18px;
    height: 18px;
    color: var(--footer-accent);
    fill: none;
    stroke: currentColor;
    stroke-width: 1.75;
}

.footer-contact-info {
    min-width: 0;
}

.footer-contact-title {
    margin: 0 0 4px;
    color: var(--footer-ink);
    font-size: 14px;
    font-weight: 700;
    line-height: 1.4;
}

.footer-contact-text {
    color: var(--footer-muted);
    font-size: 14px;
    line-height: 1.65;
    overflow-wrap: anywhere;
}

.footer-bottom {
    padding: 17px 0;
    background: #e5edf2;
    border-top: 1px solid var(--footer-line);
}

.footer-bottom-content {
    max-width: 1180px;
    padding: 0 24px;
}

.footer-copyright,
.footer-bottom-link {
    color: #526579;
    font-size: 12px;
}

.footer-bottom-nav {
    gap: 22px;
}

.footer-bottom-link {
    text-decoration: none;
    transition: color .2s ease;
}

.footer-bottom-link:hover,
.footer-bottom-link:focus-visible {
    color: var(--footer-accent);
}

.footer a:focus-visible {
    outline: 2px solid var(--footer-accent);
    outline-offset: 3px;
}

@media (max-width: 900px) {
    .footer-main {
        grid-template-columns: minmax(220px, 1fr) minmax(170px, .75fr);
    }

    .footer-contact {
        grid-column: 1 / -1;
    }
}

@media (max-width: 600px) {
    .footer-container {
        padding: 0 20px;
    }

    .footer-friendly-links-list {
        gap: 10px 18px;
    }

    .footer-friendly-links {
        display: block;
        padding-top: 20px;
        padding-bottom: 18px;
    }

    .footer-friendly-links-title {
        margin-bottom: 13px;
    }

    .footer-friendly-link-item + .footer-friendly-link-item {
        margin-left: 0;
        padding-left: 0;
        border-left: 0;
    }

    .footer-main {
        display: block;
        padding: 38px 0 42px;
    }

    .footer-brand,
    .footer-links,
    .footer-contact {
        margin-bottom: 34px;
    }

    .footer-contact {
        margin-bottom: 0;
    }

    .footer-contact-row {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .footer-contact-item:last-child {
        grid-column: auto;
    }

    .footer-bottom-content {
        align-items: flex-start;
        padding: 0 20px;
    }

    .footer-bottom-nav {
        gap: 18px;
    }
}

@media (prefers-reduced-motion: reduce) {
    .footer * {
        transition: none !important;
    }
}