:root {
    --bg: #050816;
    --bg-soft: rgba(11, 16, 34, 0.82);
    --panel: rgba(10, 14, 28, 0.74);
    --panel-strong: rgba(14, 18, 38, 0.92);
    --line: rgba(151, 163, 255, 0.16);
    --line-strong: rgba(255, 145, 77, 0.38);
    --text: #f4f7ff;
    --text-dim: #a7b0c8;
    --accent: #ff8f4c;
    --accent-soft: rgba(255, 143, 76, 0.14);
    --cyan: #77e4ff;
    --cyan-soft: rgba(119, 228, 255, 0.12);
    --shadow: 0 30px 90px rgba(0, 0, 0, 0.38);
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
}

body {
    min-height: 100vh;
    background:
        radial-gradient(circle at top left, rgba(255, 143, 76, 0.14), transparent 25%),
        radial-gradient(circle at 80% 20%, rgba(119, 228, 255, 0.12), transparent 20%),
        linear-gradient(180deg, #040611 0%, #070b16 42%, #050816 100%);
    color: var(--text);
    font-family: "Space Grotesk", "Segoe UI", sans-serif;
    overflow-x: hidden;
}

a {
    color: inherit;
    text-decoration: none;
}

button,
input {
    font: inherit;
}

.page-shell {
    position: relative;
    max-width: 1280px;
    margin: 0 auto;
    padding: 28px;
}

.orb,
.grid-glow {
    pointer-events: none;
    position: fixed;
    inset: auto;
    z-index: -1;
}

.orb {
    width: 440px;
    height: 440px;
    border-radius: 50%;
    filter: blur(90px);
    opacity: 0.55;
}

.orb-a {
    top: -120px;
    left: -100px;
    background: rgba(255, 143, 76, 0.16);
}

.orb-b {
    right: -120px;
    top: 20%;
    background: rgba(119, 228, 255, 0.12);
}

.grid-glow {
    inset: 0;
    background-image:
        linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
    background-size: 72px 72px;
    mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.75), transparent 90%);
}

.site-header,
.site-footer,
.section-block,
.hero-section {
    position: relative;
    border: 1px solid var(--line);
    background: var(--panel);
    backdrop-filter: blur(18px);
    box-shadow: var(--shadow);
}

.site-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    padding: 18px 22px;
    border-radius: 24px;
    margin-bottom: 24px;
}

.brand-mark {
    display: flex;
    align-items: center;
    gap: 14px;
}

.brand-icon {
    width: 48px;
    height: 48px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 16px;
    background: linear-gradient(135deg, rgba(255, 143, 76, 0.2), rgba(119, 228, 255, 0.08));
    color: var(--accent);
    font-size: 1.2rem;
    box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.06);
}

.brand-name {
    font-size: 1.05rem;
    font-weight: 700;
    letter-spacing: 0.02em;
}

.eyebrow {
    color: var(--cyan);
    font-family: "IBM Plex Mono", monospace;
    font-size: 0.74rem;
    letter-spacing: 0.18em;
    text-transform: uppercase;
}

.top-nav {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
    justify-content: center;
}

.top-nav a,
.header-cta,
.primary-btn,
.secondary-btn,
.status-card a,
.signal-card a,
.updates-head a,
.card-link,
.project-card {
    transition: transform 180ms ease, border-color 180ms ease, background 180ms ease, color 180ms ease;
}

.top-nav a {
    color: var(--text-dim);
    font-size: 0.95rem;
}

.top-nav a:hover {
    color: var(--text);
}

.header-cta,
.primary-btn,
.secondary-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 48px;
    padding: 0 18px;
    border-radius: 14px;
    border: 1px solid transparent;
}

.header-cta,
.secondary-btn {
    background: rgba(255, 255, 255, 0.03);
    border-color: var(--line);
}

.header-cta:hover,
.secondary-btn:hover,
.status-card a:hover,
.signal-card a:hover,
.updates-head a:hover {
    transform: translateY(-2px);
    border-color: var(--line-strong);
}

.primary-btn {
    background: linear-gradient(135deg, #ff8f4c, #ffb36d);
    color: #160b05;
    font-weight: 700;
    box-shadow: 0 14px 34px rgba(255, 143, 76, 0.24);
}

.primary-btn:hover {
    transform: translateY(-2px);
}

.hero-section {
    display: grid;
    grid-template-columns: minmax(0, 1.25fr) minmax(340px, 0.9fr);
    gap: 28px;
    padding: 42px;
    border-radius: 34px;
    margin-bottom: 24px;
}

.hero-copy h1 {
    font-size: clamp(2.7rem, 7vw, 4.85rem);
    line-height: 0.95;
    max-width: 11ch;
    margin: 14px 0 18px;
}

.hero-text {
    max-width: 700px;
    color: var(--text-dim);
    font-size: 1.06rem;
    line-height: 1.75;
}

.hero-actions {
    display: flex;
    gap: 14px;
    flex-wrap: wrap;
    margin: 28px 0 26px;
}

.hero-signals {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    list-style: none;
}

.hero-signals li {
    padding: 11px 14px;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.07);
    color: var(--text-dim);
    font-size: 0.92rem;
}

.hero-panel {
    display: grid;
    gap: 18px;
}

.signal-card {
    padding: 24px;
    border-radius: 24px;
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.04), rgba(255, 255, 255, 0.02));
    border: 1px solid var(--line);
}

.signal-card-main {
    border-color: rgba(255, 143, 76, 0.32);
    box-shadow: inset 0 0 0 1px rgba(255, 143, 76, 0.1);
}

.signal-label,
.status-label,
.tools-badge {
    color: var(--cyan);
    font-family: "IBM Plex Mono", monospace;
    font-size: 0.76rem;
    letter-spacing: 0.14em;
    text-transform: uppercase;
}

.signal-card h2 {
    font-size: 1.55rem;
    margin: 10px 0 10px;
}

.signal-card p {
    color: var(--text-dim);
    line-height: 1.7;
}

.signal-card a,
.status-card a,
.updates-head a {
    display: inline-flex;
    margin-top: 16px;
    border-bottom: 1px solid currentColor;
    color: var(--text);
}

.section-block {
    padding: 34px;
    border-radius: 30px;
    margin-bottom: 22px;
}

.section-heading {
    display: grid;
    gap: 10px;
    margin-bottom: 26px;
}

.section-heading h2 {
    font-size: clamp(1.65rem, 3vw, 2.7rem);
    max-width: 18ch;
    line-height: 1.05;
}

.section-heading p:last-child {
    max-width: 760px;
    color: var(--text-dim);
    line-height: 1.7;
}

.core-grid,
.projects-grid,
.vision-grid {
    display: grid;
    gap: 18px;
}

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

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

.vision-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.card-link,
.project-card,
.vision-card,
.tool-item,
.tools-spotlight,
.status-card,
.updates-card {
    border-radius: 24px;
    border: 1px solid var(--line);
    background: var(--panel-strong);
}

.card-link,
.project-card {
    display: flex;
    flex-direction: column;
    gap: 14px;
    min-height: 230px;
    padding: 24px;
}

.card-link:hover,
.project-card:hover {
    transform: translateY(-5px);
    border-color: var(--line-strong);
}

.card-link.is-primary {
    background:
        linear-gradient(180deg, rgba(255, 143, 76, 0.1), rgba(17, 21, 37, 0.96)),
        var(--panel-strong);
}

.card-link-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
}

.card-icon {
    width: 54px;
    height: 54px;
    border-radius: 18px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.04);
    color: var(--accent);
    font-size: 1.2rem;
}

.card-link h3,
.project-card h3,
.vision-card h3,
.tools-spotlight h3,
.status-card h3,
.updates-head h3,
.tool-item h3 {
    font-size: 1.35rem;
}

.card-link p,
.project-card p,
.vision-card p,
.tool-item p,
.tools-spotlight p,
.status-card p,
.updates-item p {
    color: var(--text-dim);
    line-height: 1.7;
}

.card-link .card-arrow,
.project-card .card-arrow {
    margin-top: auto;
    color: var(--text);
}

.tools-section {
    overflow: hidden;
}

.tools-layout,
.status-layout {
    display: grid;
    gap: 18px;
    grid-template-columns: minmax(0, 0.92fr) minmax(0, 1.08fr);
}

.airguide-section {
    background:
        radial-gradient(circle at top right, rgba(255, 143, 76, 0.14), transparent 32%),
        linear-gradient(180deg, rgba(255, 255, 255, 0.03), rgba(255, 255, 255, 0.015)),
        var(--panel);
}

.airguide-card {
    display: grid;
    gap: 18px;
    grid-template-columns: minmax(0, 1.15fr) minmax(260px, 0.85fr);
    padding: 28px;
    border-radius: 24px;
    border: 1px solid rgba(255, 143, 76, 0.22);
    background:
        linear-gradient(135deg, rgba(255, 143, 76, 0.08), rgba(119, 228, 255, 0.04)),
        var(--panel-strong);
}

.airguide-copy {
    display: grid;
    gap: 14px;
}

.airguide-copy h3 {
    font-size: clamp(1.8rem, 4vw, 2.8rem);
}

.airguide-copy p {
    max-width: 60ch;
    color: var(--text-dim);
    line-height: 1.7;
}

.airguide-meta {
    display: grid;
    gap: 14px;
}

.airguide-chip {
    display: grid;
    gap: 8px;
    padding: 18px 20px;
    border-radius: 18px;
    border: 1px solid var(--line);
    background: rgba(255, 255, 255, 0.03);
}

.airguide-chip strong {
    font-size: 1.02rem;
    font-weight: 500;
}

.tools-spotlight {
    padding: 28px;
    background:
        radial-gradient(circle at top right, rgba(119, 228, 255, 0.1), transparent 35%),
        linear-gradient(180deg, rgba(255, 255, 255, 0.03), rgba(255, 255, 255, 0.01));
}

.tools-spotlight h3 {
    margin: 14px 0 12px;
    max-width: 13ch;
}

.tools-list {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
}

.tool-item {
    padding: 22px;
}

.tool-item i {
    color: var(--cyan);
    font-size: 1.1rem;
    margin-bottom: 12px;
}

.vision-section {
    background:
        linear-gradient(180deg, rgba(255, 255, 255, 0.03), rgba(255, 255, 255, 0.01)),
        var(--panel);
}

.vision-card {
    padding: 24px;
}

.vision-card span {
    display: inline-flex;
    width: 38px;
    height: 38px;
    border-radius: 12px;
    align-items: center;
    justify-content: center;
    background: var(--accent-soft);
    color: var(--accent);
    margin-bottom: 16px;
    font-family: "IBM Plex Mono", monospace;
}

.status-card {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    gap: 18px;
    padding: 24px;
}

.status-ping {
    width: 14px;
    height: 14px;
    border-radius: 999px;
    background: #63ffa3;
    box-shadow: 0 0 22px rgba(99, 255, 163, 0.8);
}

.updates-card {
    padding: 24px;
}

.updates-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    margin-bottom: 18px;
}

.updates-list {
    display: grid;
    gap: 14px;
}

.updates-item {
    padding: 18px 0;
    border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.updates-item:first-child {
    border-top: 0;
    padding-top: 0;
}

.updates-item time {
    display: inline-block;
    margin-bottom: 8px;
    color: var(--accent);
    font-family: "IBM Plex Mono", monospace;
    font-size: 0.8rem;
    letter-spacing: 0.08em;
}

.site-footer {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 24px;
    padding: 28px 32px;
    border-radius: 28px;
}

.site-footer h2 {
    margin: 10px 0 10px;
    font-size: 1.8rem;
}

.footer-copy {
    color: var(--text-dim);
    max-width: 480px;
    line-height: 1.7;
}

.footer-links {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    justify-content: flex-end;
}

.footer-links a {
    display: inline-flex;
    gap: 8px;
    align-items: center;
    min-height: 44px;
    padding: 0 14px;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.07);
    color: var(--text-dim);
}

.footer-links a:hover {
    color: var(--text);
    border-color: var(--line-strong);
}

@media (max-width: 1100px) {
    .hero-section,
    .airguide-card,
    .tools-layout,
    .status-layout,
    .site-footer {
        grid-template-columns: 1fr;
        display: grid;
    }

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

    .vision-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 820px) {
    .page-shell {
        padding: 16px;
    }

    .site-header,
    .hero-section,
    .section-block,
    .site-footer {
        padding: 22px;
    }

    .site-header {
        flex-direction: column;
        align-items: flex-start;
    }

    .top-nav {
        justify-content: flex-start;
    }

    .hero-copy h1 {
        max-width: none;
        font-size: clamp(2.2rem, 14vw, 3.5rem);
    }

    .core-grid,
    .projects-grid,
    .tools-list {
        grid-template-columns: 1fr;
    }

    .footer-links {
        justify-content: flex-start;
    }
}