.brand {
    display: inline-flex;
    align-items: center;
    gap: var(--sp-3);
    color: var(--text-invert);
    font-weight: 800;
    letter-spacing: var(--tracking-snug);
    white-space: nowrap;
}

.brand:hover {
    color: var(--text-invert);
}

.brand__mark {
    flex: none;
    width: 2rem;
    height: 2rem;
    color: var(--blue-500);
    transition: transform var(--dur-base) var(--ease-out);
}

.brand:hover .brand__mark {
    transform: rotate(-6deg);
}

.brand__name {
    font-size: 1.1875rem;
    line-height: 1;
}

.brand__name em {
    font-style: normal;
    color: var(--blue-400);
}

/* ---------- 2. Header ---------- */

.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: var(--bg-dark);
    border-bottom: 1px solid transparent;
    transition: background var(--dur-base) var(--ease-inout),
        border-color var(--dur-base) var(--ease-inout),
        box-shadow var(--dur-base) var(--ease-inout);
}

.site-header.is-scrolled,
.site-header.is-open {
    background: rgba(7, 14, 26, 0.86);
    backdrop-filter: saturate(150%) blur(14px);
    -webkit-backdrop-filter: saturate(150%) blur(14px);
    border-bottom-color: rgba(255, 255, 255, 0.09);
    box-shadow: var(--shadow-md);
}

.site-header__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--sp-6);
    min-height: var(--header-h);
    transition: min-height var(--dur-base) var(--ease-inout);
}

.site-header.is-scrolled .site-header__inner {
    min-height: 3.75rem;
}

/* ---------- 3. Navigation ---------- */

.nav {
    display: flex;
    align-items: center;
    gap: var(--sp-1);
}

.nav__link {
    position: relative;
    display: inline-flex;
    align-items: center;
    height: 2.5rem;
    padding-inline: var(--sp-3);
    border-radius: var(--r-sm);
    font-size: var(--fs-sm);
    font-weight: 500;
    color: var(--text-invert-soft);
    transition: color var(--dur-fast) var(--ease-out),
        background-color var(--dur-fast) var(--ease-out);
}

.nav__link:hover {
    color: var(--text-invert);
    background: rgba(255, 255, 255, 0.06);
}

.nav__link::after {
    content: "";
    position: absolute;
    left: var(--sp-3);
    right: var(--sp-3);
    bottom: 0.25rem;
    height: 2px;
    border-radius: var(--r-full);
    background: var(--blue-400);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--dur-base) var(--ease-out);
}

.nav__link:hover::after,
.nav__link[aria-current]::after {
    transform: scaleX(1);
}

.nav__link[aria-current] {
    color: var(--text-invert);
}

.nav__link[aria-current="page"]::after {
    background: var(--amber-500);
}

/* ---------- 4. Mobile navigation toggle ---------- */

.nav-toggle {
    display: none;
    align-items: center;
    gap: var(--sp-2);
    height: 2.75rem;
    padding-inline: var(--sp-3) var(--sp-4);
    border: 1px solid rgba(255, 255, 255, 0.16);
    border-radius: var(--r-full);
    color: var(--text-invert);
    font-size: var(--fs-xs);
    font-weight: 600;
    letter-spacing: var(--tracking-normal);
    transition: border-color var(--dur-fast) var(--ease-out),
        background-color var(--dur-fast) var(--ease-out);
}

.nav-toggle:hover {
    border-color: rgba(255, 255, 255, 0.34);
    background: rgba(255, 255, 255, 0.05);
}

.nav-toggle__bars {
    position: relative;
    width: 1.125rem;
    height: 0.625rem;
}

.nav-toggle__bars span {
    position: absolute;
    left: 0;
    width: 100%;
    height: 2px;
    border-radius: var(--r-full);
    background: currentColor;
    transition: transform var(--dur-base) var(--ease-out),
        opacity var(--dur-fast) var(--ease-out),
        top var(--dur-base) var(--ease-out);
}

.nav-toggle__bars span:nth-child(1) {
    top: 0;
}

.nav-toggle__bars span:nth-child(2) {
    top: 50%;
    transform: translateY(-50%);
}

.nav-toggle__bars span:nth-child(3) {
    top: 100%;
    transform: translateY(-100%);
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(1) {
    top: 50%;
    transform: translateY(-50%) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(2) {
    opacity: 0;
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(3) {
    top: 50%;
    transform: translateY(-50%) rotate(-45deg);
}

/* ---------- 5. Buttons ---------- */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--sp-2);
    min-height: 2.875rem;
    padding: 0.75rem var(--sp-5);
    border: 1px solid transparent;
    border-radius: var(--r-sm);
    font-size: var(--fs-sm);
    font-weight: 700;
    line-height: 1.2;
    text-align: center;
    white-space: nowrap;
    cursor: pointer;
    transition: background-color var(--dur-base) var(--ease-out),
        border-color var(--dur-base) var(--ease-out),
        color var(--dur-base) var(--ease-out),
        transform var(--dur-fast) var(--ease-out),
        box-shadow var(--dur-base) var(--ease-out);
}

.btn:active {
    transform: translateY(1px);
}

.btn__icon {
    flex: none;
    width: 1.0625rem;
    height: 1.0625rem;
    transition: transform var(--dur-base) var(--ease-out);
}

.btn:hover .btn__icon {
    transform: translateX(3px);
}

/* Primary: white on navy header/hero, inverted on light backgrounds. */
.btn--primary {
    background: var(--white);
    color: var(--navy-900);
    box-shadow: var(--shadow-sm);
}

.btn--primary:hover {
    background: var(--blue-100);
    color: var(--navy-900);
    box-shadow: var(--shadow-md);
}

.section--white .btn--primary,
.contact-form__submit {
    background: var(--blue-600);
    color: var(--white);
}

.section--white .btn--primary:hover,
.contact-form__submit:hover {
    background: var(--blue-700);
    color: var(--white);
}

/* Secondary: outlined, adapts to the surface it sits on. */
.btn--ghost {
    border-color: rgba(255, 255, 255, 0.24);
    color: var(--text-invert);
}

.btn--ghost:hover {
    border-color: var(--blue-400);
    color: var(--white);
    background: rgba(91, 134, 248, 0.12);
}

.btn--lg {
    min-height: 3.25rem;
    padding: 0.9375rem var(--sp-6);
    font-size: var(--fs-body);
}

.btn[disabled],
.btn[aria-disabled="true"] {
    opacity: 0.55;
    cursor: not-allowed;
}

/* Text link with a sliding arrow. */
.link-arrow {
    display: inline-flex;
    align-items: center;
    gap: var(--sp-2);
    font-size: var(--fs-sm);
    font-weight: 700;
    color: var(--blue-600);
}

.link-arrow svg {
    width: 1rem;
    height: 1rem;
    transition: transform var(--dur-base) var(--ease-out);
}

.link-arrow:hover {
    color: var(--blue-700);
}

.link-arrow:hover svg {
    transform: translateX(4px);
}

.on-dark .link-arrow {
    color: var(--blue-400);
}

.on-dark .link-arrow:hover {
    color: var(--white);
}

/* ---------- 6. Icon container ---------- */

.icon-box {
    display: grid;
    place-items: center;
    flex: none;
    width: 2.75rem;
    height: 2.75rem;
    border-radius: var(--r-md);
    background: var(--blue-50);
    color: var(--blue-600);
    transition: background-color var(--dur-base) var(--ease-out),
        color var(--dur-base) var(--ease-out);
}

.icon-box svg {
    width: 1.375rem;
    height: 1.375rem;
}

.icon-box--amber {
    background: var(--amber-100);
    color: var(--amber-600);
}

/* ---------- 7. Solution card ---------- */

.card-grid {
    display: grid;
    gap: var(--sp-5);
    grid-template-columns: repeat(4, 1fr);
}

.card {
    position: relative;
    display: flex;
    flex-direction: column;
    padding: var(--sp-6);
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: var(--r-lg);
    transition: transform var(--dur-base) var(--ease-out),
        border-color var(--dur-base) var(--ease-out),
        box-shadow var(--dur-base) var(--ease-out);
}

.card:hover {
    transform: translateY(-3px);
    border-color: var(--blue-200);
    box-shadow: var(--shadow-md);
}

.card:hover .icon-box {
    background: var(--blue-600);
    color: var(--white);
}

.card h3 {
    margin-top: var(--sp-5);
    font-size: var(--fs-h4);
    letter-spacing: var(--tracking-snug);
}

.card p {
    margin-top: var(--sp-2);
    font-size: var(--fs-sm);
    line-height: var(--lh-loose);
    color: var(--text-soft);
}

.card__benefit {
    display: flex;
    align-items: flex-start;
    gap: var(--sp-2);
    margin-top: auto;
    padding-top: var(--sp-4);
    font-size: var(--fs-xs);
    font-weight: 600;
    line-height: 1.5;
    color: var(--blue-700);
}

.card__benefit::before {
    content: "";
    flex: none;
    width: 1.05rem;
    height: 1.05rem;
    margin-top: 0.1rem;
    border-radius: var(--r-full);
    background: var(--blue-100) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='none' stroke='%231b4de4' stroke-width='2.2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M3.5 8.5l3 3 6-6.5'/%3E%3C/svg%3E")
        center / 0.75rem no-repeat;
}

/* ---------- 8. Pills, badges and status ---------- */

.pill {
    display: inline-flex;
    align-items: center;
    gap: var(--sp-2);
    padding: 0.3125rem 0.6875rem;
    border-radius: var(--r-full);
    font-family: var(--font-mono);
    font-size: 0.6875rem;
    font-weight: 500;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    white-space: nowrap;
}

.pill--dark {
    background: rgba(255, 255, 255, 0.08);
    color: var(--text-invert-soft);
    border: 1px solid rgba(255, 255, 255, 0.08);
}

.dot {
    width: 0.4375rem;
    height: 0.4375rem;
    border-radius: var(--r-full);
    background: currentColor;
    flex: none;
}

.dot--live {
    background: var(--green-500);
    box-shadow: 0 0 0 0 rgba(23, 185, 128, 0.55);
    animation: pulse-dot 2.4s var(--ease-out) infinite;
}

@keyframes pulse-dot {
    0% {
        box-shadow: 0 0 0 0 rgba(23, 185, 128, 0.5);
    }
    70% {
        box-shadow: 0 0 0 0.5rem rgba(23, 185, 128, 0);
    }
    100% {
        box-shadow: 0 0 0 0 rgba(23, 185, 128, 0);
    }
}

/* ---------- 9. Console / dashboard widgets ---------- */

.console {
    background: var(--bg-dark-deep);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: var(--r-lg);
    box-shadow: var(--shadow-lg);
    overflow: hidden;
}

.console__bar {
    display: flex;
    align-items: center;
    gap: var(--sp-3);
    padding: var(--sp-3) var(--sp-4);
    background: rgba(255, 255, 255, 0.03);
    border-bottom: 1px solid rgba(255, 255, 255, 0.07);
}

.console__lights {
    display: flex;
    gap: 0.375rem;
}

.console__lights span {
    width: 0.625rem;
    height: 0.625rem;
    border-radius: var(--r-full);
    background: rgba(255, 255, 255, 0.16);
}

.console__url {
    font-family: var(--font-mono);
    font-size: 0.6875rem;
    color: var(--text-invert-mute);
    letter-spacing: 0.02em;
}

.console__body {
    padding: var(--sp-5);
}

.metric-row {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--sp-3);
}

.metric {
    padding: var(--sp-4);
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.07);
    border-radius: var(--r-md);
}

.metric__label {
    font-family: var(--font-mono);
    font-size: 0.625rem;
    font-weight: 500;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--text-invert-mute);
}

.metric__value {
    display: flex;
    align-items: baseline;
    gap: 0.2rem;
    margin-top: var(--sp-2);
    font-family: var(--font-mono);
    font-size: 1.375rem;
    font-weight: 700;
    line-height: 1.1;
    color: var(--white);
    font-variant-numeric: tabular-nums;
}

.metric__unit {
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--text-invert-mute);
}

.metric--accent .metric__value {
    color: var(--amber-500);
}

.metric__trend {
    margin-top: var(--sp-2);
    font-family: var(--font-mono);
    font-size: 0.6875rem;
    color: var(--green-500);
}

.metric__trend--down {
    color: var(--text-invert-mute);
}

/* Bar chart */
.chart {
    margin-top: var(--sp-5);
}

.chart__head {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: var(--sp-4);
    margin-bottom: var(--sp-4);
}

.chart__title {
    font-size: var(--fs-xs);
    font-weight: 600;
    color: var(--text-invert-soft);
}

.chart__legend {
    display: flex;
    align-items: center;
    gap: var(--sp-2);
    font-family: var(--font-mono);
    font-size: 0.625rem;
    color: var(--text-invert-mute);
}

.chart__legend i {
    width: 0.5rem;
    height: 0.5rem;
    border-radius: 2px;
    background: var(--blue-500);
}

.chart__plot {
    display: flex;
    align-items: flex-end;
    gap: clamp(0.25rem, 1.2vw, 0.625rem);
    height: 9.5rem;
    padding-top: var(--sp-2);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.chart__col {
    position: relative;
    flex: 1;
    height: var(--h);
    min-height: 4px;
    border-radius: 3px 3px 0 0;
    background: linear-gradient(180deg, var(--blue-500), rgba(46, 99, 245, 0.35));
    transform-origin: bottom;
    transform: scaleY(0);
    transition: transform var(--dur-slow) var(--ease-out),
        background-color var(--dur-fast) var(--ease-out);
}

.is-visible .chart__col,
.console__tabpanel.is-revealed .chart__col {
    transform: scaleY(1);
}

.chart__col[data-peak="true"] {
    background: linear-gradient(180deg, var(--amber-500), rgba(245, 165, 36, 0.4));
}

.chart__col:hover {
    background: var(--blue-400);
}

.chart__axis {
    display: flex;
    justify-content: space-between;
    gap: var(--sp-2);
    margin-top: var(--sp-3);
    font-family: var(--font-mono);
    font-size: 0.625rem;
    color: var(--text-invert-mute);
}

.progress {
    margin-top: var(--sp-5);
}

.progress__head {
    display: flex;
    justify-content: space-between;
    gap: var(--sp-4);
    font-family: var(--font-mono);
    font-size: 0.6875rem;
    color: var(--text-invert-mute);
    margin-bottom: var(--sp-2);
}

.progress__track {
    height: 0.5rem;
    border-radius: var(--r-full);
    background: rgba(255, 255, 255, 0.09);
    overflow: hidden;
}

.progress__bar {
    height: 100%;
    width: var(--w, 0%);
    border-radius: var(--r-full);
    background: linear-gradient(90deg, var(--blue-500), var(--blue-400));
    transform-origin: left;
    transform: scaleX(0);
    transition: transform 900ms var(--ease-out);
}

.is-visible .progress__bar,
.console__tabpanel.is-revealed .progress__bar {
    transform: scaleX(1);
}

/* Status list */
.status-list {
    display: flex;
    flex-direction: column;
}

.status-row {
    display: flex;
    align-items: center;
    gap: var(--sp-3);
    padding: var(--sp-3) 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.07);
}

.status-row:last-child {
    border-bottom: 0;
}

.status-row__icon {
    display: grid;
    place-items: center;
    flex: none;
    width: 2rem;
    height: 2rem;
    border-radius: var(--r-sm);
    background: rgba(255, 255, 255, 0.06);
    color: var(--text-invert-soft);
}

.status-row__icon svg {
    width: 1rem;
    height: 1rem;
}

.status-row__text {
    min-width: 0;
}

.status-row__name,
.status-row__meta {
    display: block;
}

.status-row__name {
    font-size: var(--fs-xs);
    font-weight: 600;
    color: var(--white);
}

.status-row__meta {
    font-family: var(--font-mono);
    font-size: 0.6875rem;
    color: var(--text-invert-mute);
}

.status-row__end {
    margin-left: auto;
}

/* Camera feed placeholder */
.feed-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--sp-3);
}

.feed {
    position: relative;
    aspect-ratio: 16 / 10;
    border-radius: var(--r-md);
    border: 1px solid rgba(255, 255, 255, 0.08);
    background: linear-gradient(160deg, #16233a 0%, #0c1523 60%, #0a1220 100%);
    overflow: hidden;
}

.feed::after {
    content: "";
    position: absolute;
    inset: 0;
    background: repeating-linear-gradient(
        0deg,
        rgba(255, 255, 255, 0.03) 0 1px,
        transparent 1px 3px
    );
    pointer-events: none;
}

.feed__sweep {
    position: absolute;
    inset: 0;
    background: linear-gradient(
        180deg,
        transparent 44%,
        rgba(91, 134, 248, 0.22) 50%,
        transparent 56%
    );
    animation: sweep 4.5s var(--ease-inout) infinite;
}

@keyframes sweep {
    0% {
        transform: translateY(-100%);
    }
    100% {
        transform: translateY(100%);
    }
}

.feed__label {
    position: absolute;
    left: 0.5rem;
    bottom: 0.5rem;
    z-index: 1;
    display: flex;
    align-items: center;
    gap: 0.35rem;
    padding: 0.1875rem 0.4375rem;
    border-radius: var(--r-xs);
    background: rgba(7, 14, 26, 0.72);
    backdrop-filter: blur(4px);
    font-family: var(--font-mono);
    font-size: 0.5625rem;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--text-invert-soft);
}

.feed__live {
    position: absolute;
    top: 0.5rem;
    right: 0.5rem;
    z-index: 1;
    display: flex;
    align-items: center;
    gap: 0.3rem;
    padding: 0.1875rem 0.4375rem;
    border-radius: var(--r-xs);
    background: rgba(7, 14, 26, 0.72);
    font-family: var(--font-mono);
    font-size: 0.5625rem;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--white);
}

.feed__frame {
    position: absolute;
    inset: 0.75rem;
    z-index: 1;
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 2px;
}

/* ---------- 10. Tabs ---------- */

.tabs {
    display: flex;
    gap: var(--sp-1);
    padding: var(--sp-2);
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.07);
    border-radius: var(--r-md);
    overflow-x: auto;
    scrollbar-width: none;
}

.tabs::-webkit-scrollbar {
    display: none;
}

.tab {
    flex: 1 0 auto;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--sp-2);
    min-height: 2.5rem;
    padding-inline: var(--sp-4);
    border-radius: var(--r-sm);
    font-size: var(--fs-xs);
    font-weight: 600;
    color: var(--text-invert-mute);
    white-space: nowrap;
    transition: background-color var(--dur-fast) var(--ease-out),
        color var(--dur-fast) var(--ease-out);
}

.tab svg {
    width: 1rem;
    height: 1rem;
}

.tab:hover {
    color: var(--white);
    background: rgba(255, 255, 255, 0.05);
}

.tab[aria-selected="true"] {
    background: var(--white);
    color: var(--navy-900);
}

/* ---------- 11. Accordion ---------- */

.accordion {
    border-top: 1px solid var(--line);
}

.accordion__item {
    border-bottom: 1px solid var(--line);
}

.accordion__trigger {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--sp-5);
    width: 100%;
    min-height: 3.75rem;
    padding: var(--sp-5) 0;
    text-align: left;
    font-size: var(--fs-h4);
    font-weight: 700;
    letter-spacing: var(--tracking-snug);
    color: var(--text);
    transition: color var(--dur-fast) var(--ease-out);
}

.accordion__trigger:hover {
    color: var(--blue-600);
}

.accordion__icon {
    flex: none;
    display: grid;
    place-items: center;
    width: 1.75rem;
    height: 1.75rem;
    border: 1px solid var(--line-strong);
    border-radius: var(--r-full);
    color: var(--blue-600);
    transition: transform var(--dur-base) var(--ease-out),
        background-color var(--dur-base) var(--ease-out),
        border-color var(--dur-base) var(--ease-out);
}

.accordion__icon svg {
    width: 0.875rem;
    height: 0.875rem;
}

.accordion__trigger[aria-expanded="true"] .accordion__icon {
    transform: rotate(180deg);
    background: var(--blue-600);
    border-color: var(--blue-600);
    color: var(--white);
}

.accordion__panel {
    display: grid;
    grid-template-rows: 0fr;
    transition: grid-template-rows var(--dur-base) var(--ease-out);
}

.accordion__panel > div {
    overflow: hidden;
}

.accordion__trigger[aria-expanded="true"] + .accordion__panel {
    grid-template-rows: 1fr;
}

.accordion__panel p {
    padding-bottom: var(--sp-5);
    font-size: var(--fs-sm);
    line-height: var(--lh-loose);
    color: var(--text-soft);
    max-width: 62ch;
}

/* ---------- 12. Form controls ---------- */

.field {
    display: flex;
    flex-direction: column;
    gap: var(--sp-2);
}

.field__label {
    font-size: var(--fs-xs);
    font-weight: 700;
    letter-spacing: 0.01em;
    color: var(--text);
}

.field__label span {
    color: var(--red-500);
}

.field__hint {
    font-size: var(--fs-xs);
    color: var(--text-mute);
}

.input,
.textarea,
.select {
    width: 100%;
    min-height: 3rem;
    padding: 0.75rem var(--sp-4);
    background: var(--surface);
    border: 1px solid var(--line-strong);
    border-radius: var(--r-sm);
    font-size: var(--fs-sm);
    line-height: 1.5;
    color: var(--text);
    transition: border-color var(--dur-fast) var(--ease-out),
        box-shadow var(--dur-fast) var(--ease-out),
        background-color var(--dur-fast) var(--ease-out);
}

.textarea {
    min-height: 7rem;
    resize: vertical;
    line-height: var(--lh-loose);
}

.select {
    appearance: none;
    padding-right: var(--sp-8);
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='none' stroke='%234a5a70' stroke-width='1.8' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M4 6.5l4 4 4-4'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right var(--sp-4) center;
    background-size: 1rem;
    cursor: pointer;
}

.input::placeholder,
.textarea::placeholder {
    color: var(--text-mute);
}

.input:hover,
.textarea:hover,
.select:hover {
    border-color: #b9c4d3;
}

.input:focus,
.textarea:focus,
.select:focus {
    outline: none;
    border-color: var(--blue-500);
    box-shadow: var(--shadow-focus);
}

.input[aria-invalid="true"],
.textarea[aria-invalid="true"],
.select[aria-invalid="true"] {
    border-color: var(--red-500);
    background: var(--red-100);
}

.input[aria-invalid="true"]:focus,
.textarea[aria-invalid="true"]:focus,
.select[aria-invalid="true"]:focus {
    box-shadow: 0 0 0 3px rgba(229, 72, 77, 0.28);
}

.field__error {
    display: none;
    align-items: center;
    gap: var(--sp-2);
    font-size: var(--fs-xs);
    font-weight: 600;
    color: var(--red-600);
}

.field__error::before {
    content: "!";
    display: grid;
    place-items: center;
    flex: none;
    width: 1rem;
    height: 1rem;
    border-radius: var(--r-full);
    background: var(--red-500);
    color: var(--white);
    font-size: 0.625rem;
    font-weight: 700;
    line-height: 1;
}

.field__error.is-shown {
    display: flex;
}

/* Checkbox */
.checkbox {
    display: flex;
    align-items: flex-start;
    gap: var(--sp-3);
    font-size: var(--fs-xs);
    line-height: 1.55;
    color: var(--text-soft);
    cursor: pointer;
}

.checkbox input {
    flex: none;
    width: 1.125rem;
    height: 1.125rem;
    margin-top: 0.1rem;
    accent-color: var(--blue-600);
    cursor: pointer;
}

.checkbox input:focus-visible {
    outline: 2px solid var(--blue-500);
    outline-offset: 2px;
}

/* Notice blocks */
.notice {
    display: flex;
    align-items: flex-start;
    gap: var(--sp-3);
    padding: var(--sp-4);
    border: 1px solid var(--line);
    border-left: 3px solid var(--blue-500);
    border-radius: var(--r-sm);
    background: var(--blue-50);
    font-size: var(--fs-xs);
    line-height: 1.6;
    color: var(--text-soft);
}

.notice svg {
    flex: none;
    width: 1.125rem;
    height: 1.125rem;
    margin-top: 0.1rem;
    color: var(--blue-600);
}

.notice--ok {
    border-color: var(--green-100);
    border-left-color: var(--green-500);
    background: var(--green-100);
}

.notice--ok svg {
    color: var(--green-600);
}

.notice strong {
    display: block;
    color: var(--text);
    margin-bottom: 0.125rem;
}

/* ---------- 13. Footer ---------- */

.site-footer {
    background: var(--bg-dark-deep);
    color: var(--text-invert-soft);
    padding-top: var(--sp-10);
    font-size: var(--fs-sm);
}

.site-footer__grid {
    display: grid;
    grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
    gap: var(--sp-8);
    padding-bottom: var(--sp-9);
}

.site-footer__about p {
    margin-top: var(--sp-4);
    max-width: 34ch;
    line-height: var(--lh-loose);
    color: var(--text-invert-mute);
    font-size: var(--fs-xs);
}

.footer-title {
    font-family: var(--font-mono);
    font-size: 0.6875rem;
    font-weight: 500;
    letter-spacing: var(--tracking-eyebrow);
    text-transform: uppercase;
    color: var(--text-invert-mute);
    margin-bottom: var(--sp-4);
}

.footer-list {
    display: flex;
    flex-direction: column;
    gap: var(--sp-3);
}

.footer-list a,
.footer-list span {
    font-size: var(--fs-xs);
    color: var(--text-invert-soft);
    transition: color var(--dur-fast) var(--ease-out);
}

.footer-list a:hover {
    color: var(--blue-400);
}

.footer-contact {
    display: flex;
    flex-direction: column;
    gap: var(--sp-4);
}

.footer-contact__item {
    display: flex;
    align-items: flex-start;
    gap: var(--sp-3);
    font-size: var(--fs-xs);
    line-height: 1.5;
}

.footer-contact__item svg {
    flex: none;
    width: 1rem;
    height: 1rem;
    margin-top: 0.15rem;
    color: var(--blue-400);
}

.socials {
    display: flex;
    gap: var(--sp-2);
    margin-top: var(--sp-5);
}

.socials a {
    display: grid;
    place-items: center;
    width: 2.25rem;
    height: 2.25rem;
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: var(--r-sm);
    color: var(--text-invert-soft);
    transition: border-color var(--dur-base) var(--ease-out),
        color var(--dur-base) var(--ease-out),
        background-color var(--dur-base) var(--ease-out),
        transform var(--dur-base) var(--ease-out);
}

.socials a:hover {
    color: var(--white);
    background: rgba(255, 255, 255, 0.06);
    border-color: var(--blue-400);
    transform: translateY(-2px);
}

.socials svg {
    width: 1.0625rem;
    height: 1.0625rem;
}

.site-footer__bottom {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--sp-5);
    flex-wrap: wrap;
    padding-block: var(--sp-5);
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    font-size: var(--fs-xs);
    color: var(--text-invert-mute);
}

.site-footer__bottom p {
    max-width: none;
}

/* ---------- 14. Breadcrumb ---------- */

.breadcrumb {
    display: flex;
    align-items: center;
    gap: var(--sp-2);
    font-family: var(--font-mono);
    font-size: 0.6875rem;
    color: var(--text-mute);
}

.breadcrumb a {
    color: var(--text-mute);
    transition: color var(--dur-fast) var(--ease-out);
}

.breadcrumb a:hover {
    color: var(--blue-600);
}

.breadcrumb span[aria-current] {
    color: var(--text-soft);
}