/* ============================================================
   TACIT SPACE / AX — site stylesheet
   Display: Archivo · Body: IBM Plex Sans · Mono: IBM Plex Mono
   ============================================================ */

:root {
    --ink: #0d1b30;
    --navy: #122a4c;
    --navy-deep: #0a1628;
    --paper: #f3f5f8;
    --paper-2: #e8ecf1;
    --white: #ffffff;
    --blue: #0052cc;
    --blue-deep: #003d99;
    --amber: #ffab00;
    --amber-deep: #e09400;
    --red: #e5484d;
    --green: #2fbf71;
    --line: #d6dce4;
    --text: #3d4c63;
    --muted: #6f7e94;

    --font-display: 'Archivo', -apple-system, sans-serif;
    --font-body: 'IBM Plex Sans', -apple-system, 'Segoe UI', sans-serif;
    --font-mono: 'IBM Plex Mono', 'SFMono-Regular', Consolas, monospace;

    --shadow-lg: 0 24px 60px -20px rgba(13, 27, 48, 0.28);
    --shadow-md: 0 10px 30px -12px rgba(13, 27, 48, 0.18);
}

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

html { scroll-behavior: smooth; }

body {
    font-family: var(--font-body);
    color: var(--text);
    line-height: 1.65;
    background-color: var(--paper);
    /* layered: map grid + corner contour rings + soft signal glow */
    background-image:
        radial-gradient(ellipse 60% 40% at 88% -5%, rgba(0, 82, 204, 0.08), transparent 70%),
        repeating-radial-gradient(circle at 92% -12%, transparent 0 88px, rgba(13, 27, 48, 0.035) 88px 89px),
        linear-gradient(rgba(13, 27, 48, 0.04) 1px, transparent 1px),
        linear-gradient(90deg, rgba(13, 27, 48, 0.04) 1px, transparent 1px);
    background-size: auto, auto, 100% 44px, 44px 100%;
    background-attachment: fixed;
}

::selection { background: var(--amber); color: var(--ink); }

img, iframe { max-width: 100%; }

a { color: var(--blue); }

.container { max-width: 1120px; margin: 0 auto; padding: 0 1.5rem; }

/* ---------- type helpers ---------- */

.eyebrow {
    font-family: var(--font-mono);
    font-size: 0.78rem;
    font-weight: 600;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--blue);
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
}
.eyebrow::before {
    content: "";
    width: 26px; height: 2px;
    background: var(--amber);
    display: inline-block;
}
.eyebrow.on-dark { color: var(--amber); }

h1, h2, h3 { font-family: var(--font-display); color: var(--ink); line-height: 1.08; }

.display {
    font-weight: 900;
    text-transform: uppercase;
    letter-spacing: -0.015em;
}

.mark {
    background: var(--amber);
    color: var(--ink);
    padding: 0 0.14em;
    white-space: nowrap;           /* highlighted word never breaks mid-word */
    box-decoration-break: clone;
    -webkit-box-decoration-break: clone;
}

.mono { font-family: var(--font-mono); }

/* ---------- nav ---------- */

.nav {
    position: sticky;
    top: 0;
    z-index: 50;
    background: rgba(13, 27, 48, 0.97);
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}
.nav-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    height: 64px;
}
.wordmark {
    display: flex; align-items: baseline; gap: 0.55rem;
    text-decoration: none;
}
.wordmark b {
    font-family: var(--font-display);
    font-weight: 800;
    font-size: 1.05rem;
    letter-spacing: 0.06em;
    color: #fff;
    text-transform: uppercase;
}
.wordmark span {
    font-family: var(--font-mono);
    font-size: 0.68rem;
    letter-spacing: 0.14em;
    color: var(--amber);
    border: 1px solid rgba(255, 171, 0, 0.5);
    padding: 0.14rem 0.4rem;
    border-radius: 3px;
}
.nav-links { display: flex; gap: 0.25rem; list-style: none; }
.nav-links a {
    font-family: var(--font-mono);
    font-size: 0.74rem;
    font-weight: 500;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: rgba(255, 255, 255, 0.72);
    text-decoration: none;
    padding: 0.5rem 0.75rem;
    border-radius: 4px;
    position: relative;
    transition: color 0.2s;
}
.nav-links a::after {
    content: "";
    position: absolute;
    left: 0.75rem; right: 0.75rem; bottom: 0.2rem;
    height: 2px;
    background: var(--amber);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.25s ease;
}
.nav-links a:hover { color: #fff; }
.nav-links a:hover::after { transform: scaleX(1); }
.nav-links a[aria-current="page"] { color: var(--amber); }
.nav-links a[aria-current="page"]::after { transform: scaleX(1); }

/* ---------- language switcher ---------- */

.lang-switch {
    display: flex;
    border: 1px solid rgba(255, 255, 255, 0.22);
    border-radius: 4px;
    overflow: hidden;
    flex-shrink: 0;
}
.lang-switch a {
    font-family: var(--font-mono);
    font-size: 0.68rem;
    font-weight: 600;
    letter-spacing: 0.12em;
    color: rgba(255, 255, 255, 0.6);
    text-decoration: none;
    padding: 0.42rem 0.62rem;
    transition: background 0.2s, color 0.2s;
}
.lang-switch a + a { border-left: 1px solid rgba(255, 255, 255, 0.22); }
.lang-switch a:hover { color: #fff; background: rgba(255, 255, 255, 0.08); }
.lang-switch a[aria-current="true"] {
    background: var(--amber);
    color: var(--ink);
}

/* ---------- hamburger toggle (≤820px) ---------- */

.nav-toggle { display: none; }   /* desktop: full link rail is visible */

/* Below 820px the link rail collapses behind a toggle and drops
   down as a full-width ops-briefing panel under the sticky bar */
@media (max-width: 820px) {
    .nav-inner { justify-content: flex-start; }
    .wordmark span { display: none; }
    .lang-switch { margin-left: auto; }
    .lang-switch a { padding: 0.5rem 0.62rem; }

    .nav-toggle {
        display: inline-flex;
        flex-direction: column;
        justify-content: center;
        gap: 5px;
        width: 44px;
        height: 44px;
        margin-left: 0.75rem;
        padding: 0 10px;
        background: transparent;
        border: 1px solid rgba(255, 255, 255, 0.22);
        border-radius: 4px;
        cursor: pointer;
        transition: border-color 0.2s ease;
    }
    .nav-toggle:hover { border-color: var(--amber); }
    .nav-toggle span {
        display: block;
        height: 2px;
        width: 100%;
        background: #fff;
        border-radius: 2px;
        transition: transform 0.25s ease, opacity 0.2s ease, background 0.2s ease;
    }
    .nav-toggle:hover span,
    .nav.open .nav-toggle span { background: var(--amber); }
    .nav.open .nav-toggle span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
    .nav.open .nav-toggle span:nth-child(2) { opacity: 0; transform: scaleX(0); }
    .nav.open .nav-toggle span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

    .nav-links {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        display: block;
        margin: 0;
        padding: 0.4rem 1.5rem 1rem;
        background:
            repeating-linear-gradient(-45deg, rgba(255, 255, 255, 0.025) 0 2px, transparent 2px 12px),
            var(--navy-deep);
        border-top: 2px solid var(--amber);
        box-shadow: 0 26px 44px -22px rgba(4, 10, 20, 0.65);
        opacity: 0;
        visibility: hidden;
        transform: translateY(-10px);
        transition: opacity 0.22s ease, transform 0.22s ease, visibility 0.22s;
    }
    .nav.open .nav-links {
        opacity: 1;
        visibility: visible;
        transform: none;
    }
    .nav-links li {
        opacity: 0;
        transform: translateY(-6px);
        transition: opacity 0.25s ease, transform 0.25s ease;
    }
    .nav.open .nav-links li { opacity: 1; transform: none; }
    .nav.open .nav-links li:nth-child(1) { transition-delay: 0.04s; }
    .nav.open .nav-links li:nth-child(2) { transition-delay: 0.08s; }
    .nav.open .nav-links li:nth-child(3) { transition-delay: 0.12s; }
    .nav.open .nav-links li:nth-child(4) { transition-delay: 0.16s; }

    .nav-links a {
        display: flex;
        align-items: center;
        justify-content: space-between;
        padding: 0.95rem 0.25rem;
        font-size: 0.82rem;
        border-radius: 0;
        border-bottom: 1px solid rgba(255, 255, 255, 0.07);
    }
    .nav-links li:last-child a { border-bottom: none; }
    /* the desktop underline becomes a sliding arrow on each row */
    .nav-links a::after {
        content: "→";
        position: static;
        width: auto;
        height: auto;
        background: none;
        color: var(--amber);
        opacity: 0;
        transform: translateX(-6px);
        transition: opacity 0.2s ease, transform 0.2s ease;
    }
    .nav-links a:hover::after,
    .nav-links a[aria-current="page"]::after {
        opacity: 1;
        transform: none;
    }
}

@media (max-width: 480px) {
    .container { padding: 0 1rem; }
}

/* ---------- buttons ---------- */

.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
    font-family: var(--font-mono);
    font-size: 0.82rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    text-decoration: none;
    padding: 0.95rem 1.6rem;
    border-radius: 5px;
    border: 2px solid transparent;
    cursor: pointer;
    transition: transform 0.18s ease, box-shadow 0.18s ease, background 0.18s ease, color 0.18s ease;
}
.btn .arr { transition: transform 0.18s ease; }
.btn:hover .arr { transform: translateX(4px); }

.btn-amber { background: var(--amber); color: var(--ink); }
.btn-amber:hover { background: #ffc233; transform: translateY(-2px); box-shadow: 0 10px 24px -10px rgba(255, 171, 0, 0.7); }

.btn-outline { border-color: var(--ink); color: var(--ink); background: transparent; }
.btn-outline:hover { background: var(--ink); color: #fff; transform: translateY(-2px); }

.btn-navy { background: var(--navy); color: #fff; }
.btn-navy:hover { background: var(--blue); transform: translateY(-2px); box-shadow: var(--shadow-md); }

.btn-ghost-light { border-color: rgba(255,255,255,0.4); color: #fff; }
.btn-ghost-light:hover { border-color: var(--amber); color: var(--amber); transform: translateY(-2px); }

/* ---------- hero ---------- */

.hero { padding: 4.5rem 0 4rem; }
.hero-grid {
    display: grid;
    grid-template-columns: 1.15fr 0.85fr;
    gap: 3rem;
    align-items: center;
}
.hero h1 {
    font-size: clamp(2.35rem, 6.5vw, 4.6rem);
    margin: 1.4rem 0 1.2rem;
    overflow-wrap: anywhere;   /* long display words never spill off small screens */
}
.hero .lede {
    font-size: clamp(1.02rem, 2vw, 1.2rem);
    color: var(--text);
    max-width: 34rem;
    margin-bottom: 2.2rem;
}
.hero .lede strong { color: var(--ink); }
.cta-row { display: flex; flex-wrap: wrap; gap: 0.9rem; }

.stat-strip {
    margin-top: 2.6rem;
    padding-top: 1.3rem;
    border-top: 1px solid var(--line);
    font-family: var(--font-mono);
    font-size: 0.74rem;
    letter-spacing: 0.06em;
    color: var(--muted);
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem 1.4rem;
}
.stat-strip b { color: var(--ink); font-weight: 600; }
.stat-strip .dot { color: var(--amber); }

/* ---------- live device ---------- */

.device {
    background: var(--white);
    border: 1px solid var(--line);
    border-radius: 10px;
    box-shadow: var(--shadow-lg);
    overflow: hidden;
    transform: rotate(0.6deg);
    transition: transform 0.35s ease, box-shadow 0.35s ease;
}
.device:hover { transform: rotate(0deg) translateY(-4px); box-shadow: 0 34px 70px -24px rgba(13,27,48,0.36); }
.device-bar {
    display: flex;
    align-items: center;
    gap: 0.8rem;
    background: var(--navy-deep);
    padding: 0.65rem 0.9rem;
}
.device-dots { display: flex; gap: 5px; }
.device-dots i { width: 9px; height: 9px; border-radius: 50%; display: block; }
.device-dots i:nth-child(1) { background: #ff5f57; }
.device-dots i:nth-child(2) { background: #febc2e; }
.device-dots i:nth-child(3) { background: #28c840; }
.device-url {
    flex: 1;
    font-family: var(--font-mono);
    font-size: 0.7rem;
    color: rgba(255,255,255,0.55);
    background: rgba(255,255,255,0.07);
    border-radius: 4px;
    padding: 0.28rem 0.7rem;
    letter-spacing: 0.04em;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.badge-live {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    font-family: var(--font-mono);
    font-size: 0.62rem;
    font-weight: 600;
    letter-spacing: 0.16em;
    color: var(--green);
}
.badge-live i {
    width: 7px; height: 7px; border-radius: 50%;
    background: var(--green);
    animation: pulse 1.6s ease-in-out infinite;
}
@keyframes pulse {
    0%, 100% { box-shadow: 0 0 0 0 rgba(47, 191, 113, 0.55); }
    50% { box-shadow: 0 0 0 6px rgba(47, 191, 113, 0); }
}
.device iframe {
    display: block;
    width: 100%;
    height: 470px;
    border: 0;
    background: #fff;
    opacity: 0;
    transition: opacity 0.5s ease;
}
.device iframe.loaded { opacity: 1; }
.device-caption {
    font-family: var(--font-mono);
    font-size: 0.72rem;
    letter-spacing: 0.05em;
    color: var(--muted);
    margin-top: 1rem;
    text-align: right;
}
.device-caption b { color: var(--blue); font-weight: 600; }

@media (max-width: 900px) {
    .hero-grid { grid-template-columns: 1fr; gap: 2.5rem; }
    .device { transform: none; }
}

/* ---------- sections ---------- */

.section { padding: 5rem 0; }
.section-tight { padding: 3.5rem 0; }
.section-head { max-width: 46rem; margin-bottom: 3rem; }
.section-head h2 {
    font-size: clamp(1.9rem, 4.5vw, 2.9rem);
    margin: 1.1rem 0 0.9rem;
}
.section-head p { color: var(--text); font-size: 1.05rem; }

/* flow diagram */
.flow {
    display: flex;
    align-items: stretch;
    gap: 0;
    flex-wrap: wrap;
    margin: 2.5rem 0 2rem;
}
.flow-step {
    flex: 1 1 200px;
    background: var(--white);
    border: 1px solid var(--line);
    border-top: 3px solid var(--blue);
    padding: 1.3rem 1.2rem 1.1rem;
    position: relative;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.flow-step:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.flow-step:nth-child(7) { border-top-color: var(--amber); }
.flow-step .num {
    font-family: var(--font-mono);
    font-size: 0.66rem;
    letter-spacing: 0.16em;
    color: var(--muted);
    display: block;
    margin-bottom: 0.5rem;
}
.flow-step h4 {
    font-family: var(--font-display);
    font-weight: 800;
    text-transform: uppercase;
    font-size: 0.95rem;
    letter-spacing: 0.03em;
    color: var(--ink);
    margin-bottom: 0.4rem;
}
.flow-step p { font-size: 0.86rem; color: var(--text); }
.flow-arrow {
    align-self: center;
    font-family: var(--font-mono);
    color: var(--amber);
    font-size: 1.3rem;
    padding: 0 0.55rem;
    font-weight: 600;
}
@media (max-width: 820px) {
    .flow { flex-direction: column; }
    .flow-arrow { transform: rotate(90deg); align-self: center; padding: 0.4rem 0; }
}

.note-panel {
    background: var(--white);
    border: 1px solid var(--line);
    border-left: 4px solid var(--amber);
    padding: 1.4rem 1.6rem;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem 2.5rem;
}
.note-panel h5 {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    font-weight: 600;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: var(--blue);
    margin-bottom: 0.45rem;
}
.note-panel p { font-size: 0.9rem; }
@media (max-width: 720px) { .note-panel { grid-template-columns: 1fr; } }

/* scenario ledger */
.ledger { border-top: 1px solid var(--line); }
.ledger-row {
    display: grid;
    grid-template-columns: 110px 1fr 1.4fr;
    gap: 1.5rem;
    align-items: baseline;
    padding: 2rem 0.75rem;
    border-bottom: 1px solid var(--line);
    transition: background 0.2s ease, padding-left 0.2s ease;
}
.ledger-row:hover { background: var(--white); padding-left: 1.4rem; }
.ledger-row .num {
    font-family: var(--font-display);
    font-weight: 900;
    font-size: 2.6rem;
    color: transparent;
    -webkit-text-stroke: 1.5px var(--blue);
    line-height: 1;
    transition: color 0.2s ease;
}
.ledger-row:hover .num { color: var(--amber); -webkit-text-stroke: 1.5px var(--amber); }
.ledger-row h3 { font-size: 1.35rem; font-weight: 800; }
.ledger-row p { font-size: 0.95rem; }
@media (max-width: 760px) {
    .ledger-row { grid-template-columns: 64px 1fr; }
    .ledger-row p { grid-column: 2; }
    .ledger-row .num { font-size: 2rem; }
}

/* dark band / versus */
.band-dark {
    background:
        linear-gradient(rgba(255,255,255,0.035) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,0.035) 1px, transparent 1px),
        var(--navy-deep);
    background-size: 44px 44px, 44px 44px, auto;
    color: rgba(243, 245, 248, 0.82);
}
.band-dark h2, .band-dark h3 { color: #fff; }
.versus {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    gap: 1.5rem;
    align-items: stretch;
    margin-top: 2.5rem;
}
.versus-panel {
    background: rgba(255,255,255,0.045);
    border: 1px solid rgba(255,255,255,0.09);
    padding: 2rem 1.8rem;
    transition: transform 0.2s ease, background 0.2s ease;
}
.versus-panel:hover { transform: translateY(-4px); background: rgba(255,255,255,0.07); }
.versus-panel.trap { border-left: 4px solid var(--red); }
.versus-panel.win { border-left: 4px solid var(--blue); }
.versus-panel .tag {
    font-family: var(--font-mono);
    font-size: 0.66rem;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    margin-bottom: 0.9rem;
    display: block;
}
.versus-panel.trap .tag { color: var(--red); }
.versus-panel.win .tag { color: #5b9bff; }
.versus-panel h3 { font-size: 1.5rem; font-weight: 800; margin-bottom: 0.8rem; }
.versus-panel p { font-size: 0.95rem; }
.versus-x {
    align-self: center;
    font-family: var(--font-display);
    font-weight: 900;
    font-size: 1.6rem;
    color: var(--amber);
}
@media (max-width: 820px) {
    .versus { grid-template-columns: 1fr; }
    .versus-x { justify-self: center; }
}
.band-dark .more-link {
    display: inline-flex; gap: 0.5rem; align-items: center;
    margin-top: 2.4rem;
    font-family: var(--font-mono);
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--amber);
    text-decoration: none;
}
.band-dark .more-link:hover .arr { transform: translateX(4px); }
.band-dark .more-link .arr { transition: transform 0.18s ease; }

/* CTA band */
.cta-band {
    background:
        repeating-linear-gradient(-45deg, rgba(13,27,48,0.05) 0 2px, transparent 2px 14px),
        var(--amber);
    padding: 4.5rem 0;
}
.cta-band-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 2rem;
    flex-wrap: wrap;
}
.cta-band h2 {
    font-size: clamp(1.8rem, 4.5vw, 2.7rem);
    color: var(--ink);
    max-width: 22ch;
}
.cta-band p { color: rgba(13,27,48,0.75); margin-top: 0.6rem; max-width: 40ch; }

/* ---------- page head (subpages) ---------- */

.page-head { padding: 4.5rem 0 3rem; }
.page-head h1 {
    font-size: clamp(2.4rem, 6vw, 4rem);
    margin: 1.3rem 0 1rem;
    overflow-wrap: anywhere;
}
.page-head .lede { font-size: 1.12rem; max-width: 38rem; }

/* ---------- pillars (approach) ---------- */

.pillar-stack { border-top: 1px solid var(--line); }
.pillar-item {
    display: grid;
    grid-template-columns: 150px 1fr;
    gap: 2rem;
    padding: 2.6rem 0;
    border-bottom: 1px solid var(--line);
}
.pillar-item .num {
    font-family: var(--font-display);
    font-weight: 900;
    font-size: 4.2rem;
    line-height: 0.9;
    color: transparent;
    -webkit-text-stroke: 1.5px var(--blue);
}
.pillar-item h3 { font-size: 1.6rem; font-weight: 800; margin-bottom: 0.7rem; }
.pillar-item p { max-width: 44rem; }
.pillar-item .for-you {
    margin-top: 1rem;
    font-size: 0.88rem;
    background: var(--white);
    border: 1px solid var(--line);
    border-left: 3px solid var(--amber);
    padding: 0.7rem 1rem;
    display: inline-block;
}
.pillar-item .for-you b {
    font-family: var(--font-mono);
    font-size: 0.66rem;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: var(--blue);
    display: block;
    margin-bottom: 0.2rem;
}
@media (max-width: 700px) {
    .pillar-item { grid-template-columns: 1fr; gap: 0.8rem; }
    .pillar-item .num { font-size: 3rem; }
}

/* timeline */
.timeline {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
    margin-top: 2.5rem;
    position: relative;
}
.timeline::before {
    content: "";
    position: absolute;
    top: 7px; left: 0; right: 0;
    height: 2px;
    background: var(--line);
}
.tl-step { position: relative; padding-top: 1.8rem; }
.tl-step::before {
    content: "";
    position: absolute;
    top: 0; left: 0;
    width: 16px; height: 16px;
    border-radius: 50%;
    background: var(--paper);
    border: 3px solid var(--blue);
    transition: background 0.2s ease, transform 0.2s ease;
}
.tl-step:hover::before { background: var(--amber); border-color: var(--amber); transform: scale(1.2); }
.tl-step .num {
    font-family: var(--font-mono);
    font-size: 0.68rem;
    letter-spacing: 0.16em;
    color: var(--muted);
    display: block;
    margin-bottom: 0.4rem;
}
.tl-step h4 {
    font-family: var(--font-display);
    font-weight: 800;
    text-transform: uppercase;
    font-size: 1.02rem;
    color: var(--ink);
    margin-bottom: 0.4rem;
}
.tl-step p { font-size: 0.88rem; }
@media (max-width: 820px) {
    .timeline { grid-template-columns: 1fr 1fr; }
    .timeline::before { display: none; }
}
@media (max-width: 520px) { .timeline { grid-template-columns: 1fr; } }

/* ---------- apps ---------- */

.app-card {
    background: var(--white);
    border: 1px solid var(--line);
    border-radius: 10px;
    box-shadow: var(--shadow-md);
    overflow: hidden;
    transition: transform 0.25s ease, box-shadow 0.25s ease;
}
.app-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-lg); }
.app-card-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    flex-wrap: wrap;
    padding: 1.6rem 2rem 1.2rem;
    border-bottom: 1px dashed var(--line);
}
.app-card-top h3 { font-size: 1.9rem; font-weight: 900; text-transform: uppercase; }
.app-meta {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    letter-spacing: 0.08em;
    color: var(--muted);
    margin-top: 0.3rem;
}
.app-card-body { padding: 1.6rem 2rem 2rem; }
.app-card-body > p { max-width: 46rem; margin-bottom: 1.4rem; }
.app-flow {
    display: flex; flex-wrap: wrap; gap: 0.5rem; align-items: center;
    margin-bottom: 1.6rem;
}
.app-flow .chip {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    background: var(--paper-2);
    border: 1px solid var(--line);
    color: var(--ink);
    padding: 0.4rem 0.75rem;
    border-radius: 4px;
    transition: background 0.15s ease, transform 0.15s ease;
}
.app-flow .chip:hover { background: var(--amber); transform: translateY(-2px); }
.app-flow .sep { color: var(--blue); font-family: var(--font-mono); }
.app-card .btn-row { display: flex; gap: 0.8rem; flex-wrap: wrap; }

.app-slot {
    border: 2px dashed var(--line);
    border-radius: 10px;
    padding: 2.6rem 2rem;
    text-align: center;
    color: var(--muted);
    transition: border-color 0.2s ease, color 0.2s ease;
}
.app-slot:hover { border-color: var(--amber); color: var(--ink); }
.app-slot .num {
    font-family: var(--font-display);
    font-weight: 900;
    font-size: 2.2rem;
    color: transparent;
    -webkit-text-stroke: 1.5px var(--muted);
    display: block;
}
.app-slot h3 { font-size: 1.2rem; margin: 0.5rem 0 0.3rem; color: inherit; }

/* ---------- about ---------- */

.about-grid {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 3rem;
    align-items: start;
}
.about-grid .prose p { margin-bottom: 1.2rem; font-size: 1.02rem; }
.about-grid .prose p:first-of-type { font-size: 1.15rem; color: var(--ink); }
.fact-card {
    background: var(--navy-deep);
    color: rgba(243,245,248,0.85);
    padding: 2rem 1.8rem;
    border-radius: 10px;
    position: sticky;
    top: 90px;
}
.fact-card h3 { color: #fff; font-size: 1.25rem; margin-bottom: 1rem; }
.fact-card ul { list-style: none; }
.fact-card li {
    font-size: 0.9rem;
    padding: 0.65rem 0;
    border-bottom: 1px solid rgba(255,255,255,0.09);
    display: flex; gap: 0.7rem;
}
.fact-card li::before { content: "▸"; color: var(--amber); }
.fact-card .btn { margin-top: 1.4rem; width: 100%; justify-content: center; }
@media (max-width: 860px) {
    .about-grid { grid-template-columns: 1fr; }
    .fact-card { position: static; }
}

/* ---------- footer ---------- */

.footer {
    background: var(--navy-deep);
    color: rgba(243, 245, 248, 0.7);
    padding: 4rem 0 0;
    margin-top: 2rem;
}
.footer-grid {
    display: grid;
    grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
    gap: 2.5rem;
    padding-bottom: 3rem;
}
.footer h6 {
    font-family: var(--font-mono);
    font-size: 0.68rem;
    font-weight: 600;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--amber);
    margin-bottom: 1rem;
}
.footer a {
    color: rgba(243,245,248,0.75);
    text-decoration: none;
    transition: color 0.15s ease;
}
.footer a:hover { color: var(--amber); }
.footer ul { list-style: none; }
.footer li { margin-bottom: 0.55rem; font-size: 0.9rem; }
.footer .blurb { font-size: 0.9rem; max-width: 26ch; margin-top: 0.8rem; }
.footer .wordmark b { font-size: 1rem; }
.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.08);
    padding: 1.3rem 0;
    font-family: var(--font-mono);
    font-size: 0.68rem;
    letter-spacing: 0.08em;
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    flex-wrap: wrap;
    color: rgba(243,245,248,0.45);
}
@media (max-width: 860px) { .footer-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 520px) { .footer-grid { grid-template-columns: 1fr; } }

/* ---------- 404 ---------- */

.err-page {
    min-height: 70vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 4rem 1.5rem;
}
.err-page .big {
    font-family: var(--font-display);
    font-weight: 900;
    font-size: clamp(5rem, 18vw, 10rem);
    line-height: 1;
    color: transparent;
    -webkit-text-stroke: 2px var(--blue);
}
.err-page .mono { letter-spacing: 0.2em; text-transform: uppercase; color: var(--muted); margin: 1rem 0 2rem; }

/* ---------- motion ---------- */

.rv {
    opacity: 0;
    transform: translateY(22px);
    transition: opacity 0.6s ease, transform 0.6s ease;
    transition-delay: var(--d, 0s);
}
.rv.in { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    .rv { opacity: 1; transform: none; transition: none; }
    .device, .app-card, .btn, .flow-step, .versus-panel,
    .nav-links, .nav-links li, .nav-toggle, .nav-toggle span { transition: none; }
    .badge-live i { animation: none; }
}