.support-hero {
    position: relative;
    display: grid;
    grid-template-columns: minmax(0, 1.35fr) minmax(240px, 0.65fr);
    gap: clamp(26px, 5vw, 64px);
    align-items: center;
    overflow: hidden;
    padding: clamp(28px, 5vw, 58px);
    background:
        radial-gradient(circle at 88% 12%, rgba(200, 255, 77, 0.17), transparent 30%),
        linear-gradient(135deg, rgba(17, 19, 29, 0.97), rgba(8, 9, 13, 0.94));
}

.support-hero::after {
    content: "";
    position: absolute;
    inset: 0;
    background:
        linear-gradient(rgba(255, 255, 255, 0.045) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.045) 1px, transparent 1px);
    background-size: 28px 28px;
    mask-image: linear-gradient(90deg, transparent, #000);
    pointer-events: none;
}

.support-hero > * {
    position: relative;
    z-index: 1;
}

.support-hero h1 {
    max-width: 800px;
    font-size: clamp(38px, 6.5vw, 72px);
}

.support-hero > div > p:not(.eyebrow) {
    max-width: 740px;
    margin: 22px 0 0;
    color: var(--muted);
    font-size: clamp(18px, 2vw, 23px);
    line-height: 1.45;
}

.status-card {
    display: grid;
    gap: 10px;
    align-content: center;
    min-height: 180px;
    padding: 22px;
    background: rgba(5, 6, 9, 0.78);
    border: 1px solid rgba(200, 255, 77, 0.4);
    box-shadow: 12px 12px 0 rgba(34, 211, 238, 0.09);
}

.status-card span,
.principle-grid article > span {
    color: var(--cyan);
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 0.14em;
    text-transform: uppercase;
}

.status-card strong {
    color: var(--lime);
    font-size: 24px;
    line-height: 1.15;
}

.status-card small,
.form-note {
    color: var(--muted);
    line-height: 1.45;
}

.support-actions,
.principle-grid,
.support-footer-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 16px;
    margin-top: 20px;
}

.action-card,
.principle-grid article {
    position: relative;
    min-height: 210px;
    padding: 22px;
    overflow: hidden;
    background: rgba(17, 19, 29, 0.92);
    border: 1px solid var(--line);
    transition: transform 180ms ease, border-color 180ms ease, box-shadow 180ms ease;
}

.action-card:hover {
    transform: translateY(-4px);
    border-color: var(--cyan);
    box-shadow: 0 14px 32px rgba(0, 0, 0, 0.24);
}

.action-card > span {
    color: var(--amber);
    font-weight: 700;
}

.action-card h2,
.principle-grid h2 {
    margin-top: 32px;
    font-size: 26px;
}

.action-card p,
.principle-grid p,
.section-intro p,
.about-content p {
    color: var(--muted);
    line-height: 1.55;
}

.faq-section {
    display: grid;
    grid-template-columns: minmax(220px, 0.42fr) minmax(0, 1fr);
    gap: clamp(28px, 5vw, 64px);
    margin-top: clamp(54px, 8vw, 90px);
}

.section-intro {
    align-self: start;
    position: sticky;
    top: 110px;
}

.section-intro h2 {
    font-size: clamp(30px, 4vw, 44px);
}

.faq-list {
    display: grid;
    gap: 12px;
}

.faq-list details {
    background: rgba(17, 19, 29, 0.94);
    border: 1px solid var(--line);
}

.faq-list details[open] {
    border-color: rgba(34, 211, 238, 0.62);
}

.faq-list summary {
    position: relative;
    padding: 20px 58px 20px 20px;
    color: var(--text);
    cursor: pointer;
    font-size: 18px;
    font-weight: 700;
    list-style: none;
}

.faq-list summary::-webkit-details-marker {
    display: none;
}

.faq-list summary::after {
    content: "+";
    position: absolute;
    top: 50%;
    right: 20px;
    color: var(--lime);
    font-size: 28px;
    line-height: 1;
    transform: translateY(-50%);
}

.faq-list details[open] summary::after {
    content: "-";
}

.faq-list details > div {
    padding: 0 20px 20px;
}

.faq-list p {
    margin: 0;
    color: var(--muted);
    line-height: 1.62;
}

.faq-list a {
    display: inline-flex;
    margin-top: 14px;
    color: var(--lime);
    font-weight: 700;
}

.support-footer-grid {
    margin-top: clamp(54px, 8vw, 90px);
}

.principle-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
}

.principle-grid article {
    min-height: 260px;
}

.about-content {
    margin-top: 20px;
}

.about-content h2 {
    font-size: clamp(28px, 4vw, 40px);
}

.build-status ul {
    display: grid;
    gap: 12px;
    margin: 0;
    padding: 0;
    list-style: none;
}

.build-status li {
    padding: 12px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.build-status li::before {
    content: ">";
    margin-right: 10px;
    color: var(--lime);
}

.pixel-mark {
    display: grid;
    grid-template-columns: repeat(4, 34px);
    grid-template-rows: repeat(4, 34px);
    justify-content: center;
    filter: drop-shadow(0 0 22px rgba(34, 211, 238, 0.24));
}

.pixel-mark span {
    background: var(--cyan);
}

.pixel-mark span:nth-child(1) { grid-area: 1 / 2; }
.pixel-mark span:nth-child(2) { grid-area: 2 / 2; }
.pixel-mark span:nth-child(3) { grid-area: 3 / 2; }
.pixel-mark span:nth-child(4) { grid-area: 3 / 3; background: var(--pink, #ff2f7d); }
.pixel-mark span:nth-child(5) { grid-area: 3 / 4; background: var(--lime); }

.contact-layout {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(250px, 0.42fr);
    gap: 20px;
    margin-top: 20px;
}

.contact-form {
    display: grid;
    gap: 18px;
    padding: clamp(22px, 4vw, 38px);
}

.form-heading h2 {
    margin-bottom: 4px;
    font-size: clamp(28px, 4vw, 42px);
}

.field-row {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px;
}

.contact-form label {
    display: grid;
    gap: 8px;
    color: var(--text);
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.contact-form input,
.contact-form select,
.contact-form textarea {
    width: 100%;
    min-width: 0;
    padding: 13px 14px;
    background: #090b12;
    border: 1px solid var(--line);
    border-radius: 0;
    color: var(--text);
    font: inherit;
    text-transform: none;
}

.contact-form input:focus,
.contact-form select:focus,
.contact-form textarea:focus {
    outline: 2px solid var(--cyan);
    outline-offset: 2px;
    border-color: transparent;
}

.contact-form textarea {
    resize: vertical;
}

.submit-button {
    justify-content: center;
    border: 0;
    cursor: pointer;
    font: inherit;
}

.contact-options {
    display: grid;
    gap: 16px;
    align-content: start;
}

.error-main {
    display: grid;
    min-height: calc(100vh - 76px);
    place-items: center;
}

.error-panel {
    position: relative;
    width: min(760px, 100%);
    overflow: hidden;
    padding: clamp(28px, 6vw, 64px);
}

.error-panel h1 {
    max-width: 650px;
    font-size: clamp(38px, 7vw, 72px);
}

.error-panel > p:not(.eyebrow, .error-code) {
    max-width: 620px;
    color: var(--muted);
    font-size: 20px;
    line-height: 1.55;
}

.error-code {
    position: absolute;
    right: -8px;
    bottom: -58px;
    margin: 0;
    color: rgba(34, 211, 238, 0.08);
    font-size: clamp(150px, 28vw, 280px);
    font-weight: 700;
    line-height: 1;
    pointer-events: none;
}

@media screen and (max-width: 900px) {
    .support-hero,
    .faq-section,
    .contact-layout {
        grid-template-columns: 1fr;
    }

    .principle-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .section-intro {
        position: static;
    }
}

@media screen and (max-width: 680px) {
    .support-actions,
    .principle-grid,
    .support-footer-grid,
    .field-row {
        grid-template-columns: 1fr;
    }

    .support-hero {
        padding: 24px 20px;
    }

    .status-card,
    .action-card,
    .principle-grid article {
        min-height: 0;
    }

    .pixel-mark {
        display: none;
    }
}

@media (prefers-reduced-motion: reduce) {
    .action-card {
        transition: none;
    }
}