.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.65rem;
    min-height: 2.9rem;
    padding: 0.7rem 1.15rem;
    border-radius: var(--radius-sm);
    font-weight: 600;
    letter-spacing: 0.01em;
    border: 1px solid transparent;
    max-width: 100%;
    transition: transform 0.25s var(--ease), background 0.25s var(--ease), color 0.25s var(--ease), border-color 0.25s var(--ease);
}

.btn .icon {
    width: 0.95rem;
    height: 0.95rem;
}

.btn-primary {
    background: var(--color-signal);
    color: var(--color-carbon);
}

.btn-primary:hover {
    background: #c8ff63;
    color: var(--color-carbon);
}

.btn-ghost {
    border-color: var(--border);
    color: var(--text);
}

.btn-ghost:hover {
    border-color: var(--accent);
    color: var(--accent);
}

.btn-dark {
    background: var(--color-carbon);
    color: var(--color-offwhite);
}

.btn-dark:hover {
    color: var(--color-signal);
}

.card {
    display: block;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 1.4rem 1.35rem;
    position: relative;
    overflow: hidden;
}

.card::before {
    content: "";
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 2px;
    background: transparent;
    transition: background 0.25s var(--ease);
}

.card:hover::before,
.card:focus-within::before {
    background: var(--accent);
}

.card h3,
.card .card-title {
    margin: 0.4rem 0 0.7rem;
    font-size: 1.2rem;
    letter-spacing: -0.02em;
    text-transform: uppercase;
}

.card p {
    margin: 0;
    color: var(--muted);
}

.card-code {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    letter-spacing: 0.14em;
    color: var(--accent);
}

.tag-row {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
    margin-top: 1rem;
}

.tag {
    display: inline-block;
    font-family: var(--font-mono);
    font-size: 0.65rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    border: 1px solid var(--border);
    padding: 0.28rem 0.5rem;
    color: var(--muted);
}

a.tag:hover {
    color: var(--accent);
    border-color: var(--accent);
}

.status-dot {
    width: 0.5rem;
    height: 0.5rem;
    border-radius: 50%;
    background: var(--accent);
    box-shadow: 0 0 0 4px rgba(183, 243, 74, 0.18);
    display: inline-block;
}

.status-dot.pulse {
    animation: pulse 2.4s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { box-shadow: 0 0 0 0 rgba(183, 243, 74, 0.4); }
    50% { box-shadow: 0 0 0 8px rgba(183, 243, 74, 0); }
}

.crumbs ol {
    list-style: none;
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
    margin: 0 0 1.5rem;
    padding: 0;
    color: var(--muted);
    font-family: var(--font-mono);
    font-size: 0.72rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.crumbs li:not(:last-child)::after {
    content: "/";
    margin-left: 0.4rem;
    color: var(--muted);
}

.page-hero {
    position: relative;
    isolation: isolate;
    padding: 4.5rem 0 4.25rem;
    min-height: 18rem;
    border-bottom: 1px solid var(--border);
    background: var(--bg-secondary);
}

.page-hero.has-visual {
    min-height: min(52vh, 28rem);
    display: flex;
    align-items: flex-end;
    border-bottom: 0;
    background: transparent;
}

.page-hero.has-visual::before {
    content: "";
    position: absolute;
    inset: 0;
    z-index: -2;
    background-image: var(--hero-image);
    background-size: cover;
    background-position: center;
}

.page-hero.has-visual::after {
    content: "";
    position: absolute;
    inset: 0;
    z-index: -1;
    background: linear-gradient(180deg, rgba(13, 16, 17, 0.42) 0%, rgba(13, 16, 17, 0.82) 62%, var(--bg) 100%);
}

.page-hero p {
    max-width: 40rem;
    color: var(--muted);
}

.form-shell {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    padding: 1.5rem 1.4rem 1.45rem;
}

.form-shell-flat {
    background: transparent;
    border: 0;
    padding: 0;
}

.form {
    position: relative;
    display: grid;
    gap: 1.05rem;
}

.form-pair {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.05rem;
}

.form-row {
    display: grid;
    gap: 0.45rem;
}

.form label {
    font-family: var(--font-mono);
    font-size: 0.68rem;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--muted);
}

.form-row input,
.form-row select,
.form-row textarea {
    width: 100%;
    min-width: 0;
    background-color: rgba(13, 16, 17, 0.55);
    border: 1px solid var(--border);
    border-radius: 2px;
    padding: 0.9rem 0.95rem;
    color: var(--text);
    appearance: none;
    -webkit-appearance: none;
    transition: border-color 0.2s var(--ease), background 0.2s var(--ease);
}

.form-row select {
    background-image: linear-gradient(45deg, transparent 50%, var(--color-signal) 50%), linear-gradient(135deg, var(--color-signal) 50%, transparent 50%);
    background-position: calc(100% - 18px) calc(50% - 3px), calc(100% - 12px) calc(50% - 3px);
    background-size: 6px 6px, 6px 6px;
    background-repeat: no-repeat;
    padding-right: 2.2rem;
}

.form-row input::placeholder,
.form-row textarea::placeholder {
    color: rgba(243, 241, 235, 0.35);
}

.form textarea {
    min-height: 7.2rem;
    resize: vertical;
}

.form-row input:hover,
.form-row select:hover,
.form-row textarea:hover {
    border-color: rgba(243, 241, 235, 0.28);
}

.form-row input:focus,
.form-row select:focus,
.form-row textarea:focus {
    border-color: var(--color-signal);
    background-color: rgba(13, 16, 17, 0.78);
    outline: none;
    box-shadow: 0 0 0 1px rgba(183, 243, 74, 0.25);
}

.form-submit {
    width: 100%;
    justify-content: center;
    min-height: 3.1rem;
    margin-top: 0.2rem;
}

@media (max-width: 640px) {
    .form-pair {
        grid-template-columns: 1fr;
    }
}

.error {
    color: #e36b6b;
    font-size: 0.82rem;
}

.hp {
    position: absolute;
    left: -9999px;
    height: 0;
    overflow: hidden;
}

.check {
    display: flex;
    gap: 0.7rem;
    align-items: flex-start;
    color: var(--muted);
    font-size: 0.88rem;
}

.check input {
    width: 1.05rem;
    height: 1.05rem;
    margin-top: 0.15rem;
    flex: 0 0 1.05rem;
    padding: 0;
    border: 0;
    background: none;
    accent-color: var(--accent);
}

.form-success {
    border: 1px solid var(--accent);
    padding: 1.4rem;
    background: rgba(183, 243, 74, 0.1);
}

.form-success h3 {
    margin: 0 0 0.4rem;
    text-transform: uppercase;
    letter-spacing: -0.02em;
}

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

.accordion-item {
    border-bottom: 1px solid var(--border);
}

.accordion-btn {
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 1rem;
    text-align: left;
    padding: 1.25rem 0;
    color: var(--text);
}

.accordion-btn > span:first-child {
    min-width: 0;
    flex: 1 1 auto;
}

.accordion-btn .icon {
    flex-shrink: 0;
    margin-top: 0.2rem;
}

.accordion-item h3 {
    margin: 0;
    font-size: inherit;
    font-weight: inherit;
}

.accordion-btn strong {
    display: block;
    font-size: 1.15rem;
    letter-spacing: -0.02em;
    text-transform: uppercase;
    color: var(--text);
}

.accordion-btn span {
    color: var(--muted);
    font-size: 0.92rem;
    font-weight: 400;
}

.accordion-panel {
    display: none;
    padding: 0 0 1.3rem;
    color: var(--muted);
}

.accordion-panel strong {
    color: var(--text);
}

.accordion-panel p {
    max-width: 46rem;
}

.accordion-item.is-open .accordion-panel {
    display: block;
}

.accordion-item.is-open .accordion-btn .icon {
    color: var(--accent);
    transform: rotate(45deg);
}

.marquee {
    overflow: hidden;
    border-block: 1px solid var(--border);
    padding: 1rem 0;
}

.marquee-track {
    display: flex;
    gap: 2.5rem;
    width: max-content;
    animation: marquee 70s linear infinite;
    font-family: var(--font-mono);
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: var(--muted);
    font-size: 0.78rem;
}

.marquee-track span {
    white-space: nowrap;
}

.marquee-track span::before {
    content: "●";
    color: var(--accent);
    margin-right: 2.5rem;
}

@keyframes marquee {
    from { transform: translateX(0); }
    to { transform: translateX(-50%); }
}

.node-chip {
    display: inline-flex;
    flex-direction: column;
    gap: 0.2rem;
    border: 1px solid var(--border);
    padding: 0.55rem 0.7rem;
    background: var(--bg-elevated);
    min-width: 5.8rem;
}

.node-chip b {
    font-size: 0.78rem;
    letter-spacing: 0.08em;
}

.node-chip small {
    font-family: var(--font-mono);
    font-size: 0.62rem;
    letter-spacing: 0.12em;
    color: var(--muted);
    text-transform: uppercase;
}

.cta-band {
    background: var(--bg);
    border-top: 1px solid var(--border);
}

.cta-band .display span {
    color: var(--accent);
}

@media (max-width: 720px) {
    .btn {
        width: auto;
    }
}