/* ============================================================
   /v3/css/x402.css
   Macrostructure: bento hero + asymmetric step grid + narrative
   Mood: engineering · dark · borrowed DNA from default.html
   Uses only tokens from tokens.css: --v3-bg, --v3-accent(-soft),
   --v3-ink, --v3-mono, --v3-display, --v3-sans
   ============================================================ */

/* -------- Container matches homepage (1160px + 32 gutter) ---- */
.x-container {
    max-width: 1160px;
    margin: 0 auto;
    padding: 0 32px;
    position: relative;
}
@media (max-width: 900px) { .x-container { padding: 0 24px; } }
@media (max-width: 640px) { .x-container { padding: 0 18px; } }

/* -------- Shared eyebrow (used sparingly, only 2× on page) ---- */
.x-eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 5px 12px;
    font-family: var(--v3-mono, 'JetBrains Mono', monospace);
    font-size: 10.5px;
    font-weight: 500;
    letter-spacing: 0.10em;
    text-transform: lowercase;
    color: var(--v3-accent-soft);
    background: color-mix(in oklab, var(--v3-accent-soft) 8%, transparent);
    border: 1px solid color-mix(in oklab, var(--v3-accent-soft) 22%, transparent);
    border-radius: 999px;
    margin: 0 0 24px;
}
.x-eyebrow-dot {
    width: 6px;
    height: 6px;
    border-radius: 999px;
    background: var(--v3-accent-soft);
    box-shadow: 0 0 8px color-mix(in oklab, var(--v3-accent-soft) 60%, transparent);
    animation: x-pulse 2.4s ease-in-out infinite;
}
@keyframes x-pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.35; }
}

/* -------- Shared btn ------------------------------------------ */
.x-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 13px 22px;
    font-family: var(--v3-sans, 'Satoshi', system-ui, sans-serif);
    font-size: 14px;
    font-weight: 600;
    letter-spacing: -0.005em;
    text-decoration: none;
    border-radius: 10px;
    white-space: nowrap;
    border: 1px solid transparent;
    transition: filter 140ms ease, transform 100ms ease,
                background 140ms ease, border-color 140ms ease;
}
.x-btn-primary {
    background: linear-gradient(135deg, var(--v3-accent), var(--v3-accent-soft));
    color: var(--v3-bg);
    box-shadow: 0 6px 20px color-mix(in oklab, var(--v3-accent) 28%, transparent);
}
.x-btn-primary:hover { filter: brightness(1.08); }
.x-btn-primary:active { transform: translateY(1px); }

.x-btn-ghost {
    background: rgba(255, 255, 255, 0.03);
    color: rgba(255, 255, 255, 0.90);
    border-color: rgba(255, 255, 255, 0.10);
}
.x-btn-ghost:hover {
    background: color-mix(in oklab, var(--v3-accent-soft) 10%, transparent);
    border-color: color-mix(in oklab, var(--v3-accent-soft) 40%, transparent);
    color: var(--v3-accent-soft);
}
.x-btn i { font-size: 13px; }

/* -------- Section head shared --------------------------------- */
.x-section-head { margin: 0 0 48px; max-width: 720px; }
.x-section-head-tight { margin-bottom: 28px; }

.x-h2 {
    font-family: var(--v3-display, 'Satoshi', system-ui, sans-serif);
    font-weight: 700;
    font-size: clamp(30px, 3.4vw, 44px);
    line-height: 1.08;
    letter-spacing: -0.03em;
    color: var(--v3-ink, #ffffff);
    margin: 0 0 16px;
}
.x-h2-sm { font-size: clamp(24px, 2.4vw, 32px); }
.x-h2 em {
    font-style: normal;
    background: linear-gradient(135deg, var(--v3-accent-soft) 0%, #b08cff 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    color: transparent;
}
.x-section-sub {
    margin: 0;
    font-family: var(--v3-sans, 'Satoshi', system-ui, sans-serif);
    font-size: 16px;
    line-height: 1.6;
    color: rgba(255, 255, 255, 0.68);
    max-width: 60ch;
}
.x-section-sub code {
    font-family: var(--v3-mono, 'JetBrains Mono', monospace);
    font-size: 13.5px;
    padding: 1px 6px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 4px;
    color: var(--v3-accent-soft);
}

/* ============================================================
   §1 — HERO
   ============================================================ */

.x-hero {
    padding: 96px 0 120px;
    background: var(--v3-bg, #050608);
    position: relative;
    overflow: hidden;
}
.x-hero-bg {
    position: absolute;
    inset: 0;
    pointer-events: none;
    z-index: 0;
}
.x-hero-glow {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.5;
}
.x-hero-glow-1 {
    top: -160px; left: -120px;
    width: 560px; height: 560px;
    background: radial-gradient(circle,
        color-mix(in oklab, var(--v3-accent-soft) 40%, transparent),
        transparent 70%);
}
.x-hero-glow-2 {
    bottom: -200px; right: -100px;
    width: 520px; height: 520px;
    background: radial-gradient(circle,
        color-mix(in oklab, #b08cff 30%, transparent),
        transparent 70%);
    opacity: 0.35;
}
.x-hero-grid {
    position: absolute;
    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: 48px 48px;
    -webkit-mask-image: radial-gradient(ellipse 80% 60% at 50% 40%, black, transparent 75%);
            mask-image: radial-gradient(ellipse 80% 60% at 50% 40%, black, transparent 75%);
}

.x-hero > .x-container {
    display: grid;
    grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
    gap: 72px;
    align-items: center;
    position: relative;
    z-index: 1;
}

.x-hero-copy { min-width: 0; }

.x-hero-title {
    font-family: var(--v3-display, 'Satoshi', system-ui, sans-serif);
    font-weight: 700;
    font-size: clamp(40px, 4.4vw, 68px);
    line-height: 1;
    letter-spacing: -0.04em;
    color: var(--v3-ink, #ffffff);
    margin: 0 0 22px;
    max-width: 15ch;
}
.x-hero-title em {
    font-style: normal;
    background: linear-gradient(120deg,
        var(--v3-accent-soft) 0%,
        #b08cff 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    color: transparent;
}

.x-hero-lede {
    margin: 0 0 32px;
    font-family: var(--v3-sans, 'Satoshi', system-ui, sans-serif);
    font-size: 17px;
    line-height: 1.6;
    color: rgba(255, 255, 255, 0.75);
    max-width: 46ch;
}

.x-hero-ctas {
    display: inline-flex;
    flex-wrap: wrap;
    gap: 12px;
    margin: 0 0 44px;
}

.x-hero-stats {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 18px 22px;
    padding-top: 28px;
    border-top: 1px solid rgba(255, 255, 255, 0.06);
    max-width: 500px;
}
.x-hero-stat { min-width: 0; }
.x-hero-stat-num {
    margin: 0 0 4px;
    font-family: var(--v3-mono, 'JetBrains Mono', monospace);
    font-size: 24px;
    font-weight: 700;
    letter-spacing: -0.01em;
    line-height: 1;
    color: var(--v3-accent-soft);
    font-variant-numeric: tabular-nums;
}
.x-hero-stat-label {
    display: block;
    font-family: var(--v3-mono, 'JetBrains Mono', monospace);
    font-size: 9.5px;
    font-weight: 500;
    letter-spacing: 0.05em;
    color: rgba(255, 255, 255, 0.42);
    line-height: 1.4;
}

/* ---- Bento cluster (right column of hero) ------------------
   Grid with 3 tiles at depths, staggered. Big chat card top,
   small prompt bubble overlaps top-left, proof pill floats
   bottom-right. Motion: gentle drift on hover.               */
.x-cluster {
    position: relative;
    min-height: 560px;
    isolation: isolate;
}

.x-tile {
    position: absolute;
    background: linear-gradient(180deg,
        rgba(20, 24, 32, 0.85) 0%,
        rgba(12, 15, 21, 0.85) 100%);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 16px;
    backdrop-filter: blur(14px) saturate(140%);
    -webkit-backdrop-filter: blur(14px) saturate(140%);
    box-shadow:
        0 20px 60px rgba(0, 0, 0, 0.45),
        inset 0 1px 0 rgba(255, 255, 255, 0.04);
    transition: transform 400ms cubic-bezier(0.2, 0.9, 0.2, 1);
}

/* Tile A: prompt bubble — top-left, small, offset out of parent  */
.x-tile-prompt {
    top: -20px;
    left: -32px;
    width: 320px;
    padding: 18px 20px;
    z-index: 3;
    transform: rotate(-1.2deg);
}
.x-tile-prompt:hover { transform: rotate(-0.5deg) translateY(-4px); }

/* Tile B: agent reply — main, large, centered background */
.x-tile-agent {
    top: 40px;
    right: 0;
    left: 40px;
    padding: 22px 24px 20px;
    z-index: 2;
}

/* Tile C: proof pill — bottom-right, small, offset out */
.x-tile-proof {
    bottom: -28px;
    right: -20px;
    width: 260px;
    padding: 16px 18px;
    z-index: 4;
    background: linear-gradient(180deg,
        rgba(20, 24, 32, 0.92) 0%,
        rgba(12, 15, 21, 0.92) 100%);
    transform: rotate(1.4deg);
}
.x-tile-proof:hover { transform: rotate(0.6deg) translateY(-4px); }

/* -- shared inner tile bits -- */
.x-tile-who {
    display: block;
    font-family: var(--v3-mono, 'JetBrains Mono', monospace);
    font-size: 10.5px;
    font-weight: 500;
    letter-spacing: 0.08em;
    text-transform: lowercase;
    color: rgba(255, 255, 255, 0.45);
    margin: 0 0 8px;
}
.x-tile-msg {
    margin: 0 0 10px;
    font-family: var(--v3-sans, 'Satoshi', system-ui, sans-serif);
    font-size: 14.5px;
    line-height: 1.5;
    color: rgba(255, 255, 255, 0.92);
}
.x-tile-msg code {
    font-family: var(--v3-mono, 'JetBrains Mono', monospace);
    font-size: 12.5px;
    padding: 1px 5px;
    background: rgba(255, 255, 255, 0.06);
    border-radius: 4px;
    color: rgba(255, 255, 255, 0.98);
}
.x-tile-msg b {
    color: var(--v3-accent-soft);
    font-weight: 600;
}

/* -- prompt tile specifics -- */
.x-tile-prompt .x-tile-who { color: rgba(255, 255, 255, 0.55); }
.x-tile-prompt .x-tile-msg {
    margin-bottom: 0;
    font-size: 13.5px;
    color: rgba(255, 255, 255, 0.85);
}

/* -- agent tile specifics -- */
.x-tile-head {
    display: grid;
    grid-template-columns: 34px 1fr auto;
    gap: 12px;
    align-items: center;
    margin: 0 0 12px;
    padding: 0 0 14px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}
.x-tile-avatar {
    width: 34px;
    height: 34px;
    border-radius: 10px;
    background: linear-gradient(135deg, var(--v3-accent), #b08cff);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: var(--v3-bg, #050608);
    font-size: 15px;
}
.x-tile-head > div { min-width: 0; }
.x-tile-head .x-tile-who {
    margin: 0 0 2px;
    color: var(--v3-accent-soft);
    font-weight: 600;
    text-transform: none;
    letter-spacing: 0.04em;
    font-size: 12px;
}
.x-tile-model {
    display: block;
    font-family: var(--v3-mono, 'JetBrains Mono', monospace);
    font-size: 10px;
    color: rgba(255, 255, 255, 0.38);
    letter-spacing: 0.04em;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.x-tile-live {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 4px 9px;
    font-family: var(--v3-mono, 'JetBrains Mono', monospace);
    font-size: 10px;
    color: #5FE3A8;
    background: rgba(95, 227, 168, 0.10);
    border: 1px solid rgba(95, 227, 168, 0.28);
    border-radius: 999px;
    letter-spacing: 0.05em;
}
.x-live-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: #5FE3A8;
    box-shadow: 0 0 6px #5FE3A8;
    animation: x-pulse 1.6s ease-in-out infinite;
}

/* Log entries — 5 verbs in cyan mono column, sentence in ink */
.x-log {
    list-style: none;
    margin: 8px 0 12px;
    padding: 0;
    display: grid;
    row-gap: 8px;
}
.x-log-row {
    display: grid;
    grid-template-columns: 68px 1fr;
    gap: 14px;
    align-items: baseline;
    font-family: var(--v3-sans, 'Satoshi', system-ui, sans-serif);
    font-size: 13.5px;
    line-height: 1.5;
    color: rgba(255, 255, 255, 0.82);
    opacity: 0;
    transform: translateY(4px);
    animation: x-log-in 380ms cubic-bezier(0.2, 0.9, 0.2, 1) forwards;
    animation-delay: calc(220ms + var(--i, 0) * 130ms);
}
.x-log-tag {
    font-family: var(--v3-mono, 'JetBrains Mono', monospace);
    font-size: 10.5px;
    font-weight: 600;
    letter-spacing: 0.06em;
    color: var(--v3-accent-soft);
    text-align: right;
    text-transform: lowercase;
    padding-top: 1px;
    font-variant-numeric: tabular-nums;
}
.x-log-text b { color: var(--v3-ink, #fff); font-weight: 600; }
.x-log-text code {
    font-family: var(--v3-mono, 'JetBrains Mono', monospace);
    font-size: 12px;
    padding: 1px 4px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 3px;
    color: rgba(255, 255, 255, 0.94);
}
@keyframes x-log-in {
    to { opacity: 1; transform: translateY(0); }
}
@media (prefers-reduced-motion: reduce) {
    .x-log-row { animation: none; opacity: 1; transform: none; }
    .x-eyebrow-dot, .x-live-dot { animation: none; }
}

.x-tile-done {
    margin: 6px 0 0;
    padding: 10px 0 0;
    border-top: 1px solid rgba(255, 255, 255, 0.06);
    font-family: var(--v3-mono, 'JetBrains Mono', monospace);
    font-size: 12px;
    color: rgba(255, 255, 255, 0.65);
}
.x-tile-done a {
    color: var(--v3-accent-soft);
    text-decoration: none;
    margin-left: 6px;
    border-bottom: 1px solid color-mix(in oklab, var(--v3-accent-soft) 40%, transparent);
}
.x-tile-done a:hover { border-bottom-color: var(--v3-accent-soft); }

/* -- proof tile specifics -- */
.x-proof-row {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    padding: 6px 0;
    font-family: var(--v3-mono, 'JetBrains Mono', monospace);
    font-size: 11.5px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.04);
}
.x-proof-row:last-of-type { border-bottom: 0; }
.x-proof-key { color: rgba(255, 255, 255, 0.45); text-transform: lowercase; letter-spacing: 0.06em; font-size: 10px; }
.x-proof-val { color: rgba(255, 255, 255, 0.92); font-variant-numeric: tabular-nums; }
.x-proof-accent { color: var(--v3-accent-soft); font-weight: 600; }
.x-proof-badge {
    margin-top: 10px;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 5px 10px;
    font-family: var(--v3-mono, 'JetBrains Mono', monospace);
    font-size: 10.5px;
    color: #5FE3A8;
    background: rgba(95, 227, 168, 0.08);
    border: 1px solid rgba(95, 227, 168, 0.24);
    border-radius: 999px;
    letter-spacing: 0.04em;
}

/* ============================================================
   §2 — STEPS bento (5 asymmetric tiles)
   ============================================================ */

.x-steps {
    padding: 112px 0 96px;
    background: linear-gradient(180deg,
        rgba(255, 255, 255, 0.01) 0%,
        transparent 100%);
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}
.x-steps-grid {
    list-style: none;
    margin: 0;
    padding: 0;
    display: grid;
    grid-template-columns: repeat(6, minmax(0, 1fr));
    gap: 18px;
}
.x-step {
    grid-column: span 2;
    padding: 26px 24px;
    background: linear-gradient(180deg,
        rgba(20, 24, 32, 0.5) 0%,
        rgba(12, 15, 21, 0.5) 100%);
    border: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: 14px;
    position: relative;
    overflow: hidden;
    transition: border-color 200ms ease, transform 200ms ease;
}
.x-step:hover {
    border-color: color-mix(in oklab, var(--v3-accent-soft) 40%, transparent);
    transform: translateY(-2px);
}
.x-step-lg { grid-column: span 3; }
.x-step-wide { grid-column: span 3; }
.x-step-num {
    display: block;
    font-family: var(--v3-mono, 'JetBrains Mono', monospace);
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.10em;
    color: var(--v3-accent-soft);
    margin: 0 0 12px;
    font-variant-numeric: tabular-nums;
}
.x-step-title {
    margin: 0 0 8px;
    font-family: var(--v3-display, 'Satoshi', system-ui, sans-serif);
    font-size: 20px;
    font-weight: 700;
    letter-spacing: -0.02em;
    color: var(--v3-ink, #ffffff);
}
.x-step-body {
    margin: 0;
    font-family: var(--v3-sans, 'Satoshi', system-ui, sans-serif);
    font-size: 14px;
    line-height: 1.6;
    color: rgba(255, 255, 255, 0.72);
}
.x-step-body code {
    font-family: var(--v3-mono, 'JetBrains Mono', monospace);
    font-size: 12px;
    padding: 1px 5px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 4px;
    color: var(--v3-accent-soft);
}
.x-step-body b { color: var(--v3-ink); font-weight: 600; }

@media (max-width: 900px) {
    .x-steps-grid { grid-template-columns: 1fr; }
    .x-step, .x-step-lg, .x-step-wide { grid-column: span 1; }
}

/* ============================================================
   §3 — SPEC facts strip (compact)
   ============================================================ */

.x-spec {
    padding: 88px 0 88px;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}
.x-spec-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1px;
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: 12px;
    overflow: hidden;
    margin: 0;
}
.x-spec-row {
    padding: 22px 24px;
    background: var(--v3-bg);
    display: flex;
    flex-direction: column;
    gap: 6px;
}
.x-spec-row dt {
    font-family: var(--v3-mono, 'JetBrains Mono', monospace);
    font-size: 10px;
    font-weight: 500;
    letter-spacing: 0.10em;
    color: rgba(255, 255, 255, 0.40);
    margin: 0;
    text-transform: lowercase;
}
.x-spec-row dd {
    margin: 0;
    font-family: var(--v3-sans, 'Satoshi', system-ui, sans-serif);
    font-size: 14px;
    color: rgba(255, 255, 255, 0.90);
    line-height: 1.4;
}
.x-spec-row dd code {
    font-family: var(--v3-mono, 'JetBrains Mono', monospace);
    font-size: 12.5px;
    color: var(--v3-accent-soft);
    background: transparent;
    padding: 0;
}
.x-spec-row dd a {
    color: var(--v3-accent-soft);
    text-decoration: none;
    border-bottom: 1px solid color-mix(in oklab, var(--v3-accent-soft) 40%, transparent);
}
@media (max-width: 720px) {
    .x-spec-grid { grid-template-columns: 1fr; }
}

/* ============================================================
   §4 — ASSETS (XRP · RLUSD) — 2 large tiles
   ============================================================ */

.x-assets {
    padding: 88px 0 96px;
    background: linear-gradient(180deg,
        rgba(255, 255, 255, 0.012) 0%,
        transparent 100%);
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}
.x-assets-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 24px;
}
.x-asset {
    padding: 32px 30px;
    background: linear-gradient(180deg,
        rgba(20, 24, 32, 0.6) 0%,
        rgba(12, 15, 21, 0.6) 100%);
    border: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: 18px;
    display: grid;
    grid-template-columns: 56px 1fr;
    gap: 20px;
    align-items: start;
    transition: border-color 200ms ease, transform 200ms ease;
}
.x-asset:hover {
    border-color: color-mix(in oklab, var(--v3-accent-soft) 32%, transparent);
    transform: translateY(-2px);
}
.x-asset-mark {
    width: 56px;
    height: 56px;
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: color-mix(in oklab, var(--v3-accent-soft) 14%, transparent);
    color: var(--v3-accent-soft);
    font-size: 22px;
}
.x-asset-rlusd .x-asset-mark {
    background: color-mix(in oklab, #b08cff 14%, transparent);
    color: #d0b5ff;
}
.x-asset-name {
    margin: 0 0 10px;
    display: flex;
    align-items: baseline;
    gap: 10px;
    font-family: var(--v3-display, 'Satoshi', system-ui, sans-serif);
    font-size: 26px;
    font-weight: 700;
    letter-spacing: -0.025em;
    color: var(--v3-ink);
}
.x-asset-tag {
    font-family: var(--v3-mono, 'JetBrains Mono', monospace);
    font-size: 10px;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    padding: 3px 8px;
    background: transparent;
    border: 1px solid rgba(255, 255, 255, 0.14);
    border-radius: 999px;
    color: rgba(255, 255, 255, 0.55);
}
.x-asset-text {
    margin: 0 0 12px;
    font-family: var(--v3-sans, 'Satoshi', system-ui, sans-serif);
    font-size: 14.5px;
    line-height: 1.6;
    color: rgba(255, 255, 255, 0.75);
}
.x-asset-eg {
    margin: 0;
    padding: 10px 12px;
    background: rgba(255, 255, 255, 0.03);
    border-radius: 8px;
    font-family: var(--v3-mono, 'JetBrains Mono', monospace);
    font-size: 12px;
    color: rgba(255, 255, 255, 0.85);
}
.x-asset-eg span {
    color: rgba(255, 255, 255, 0.40);
    margin-right: 8px;
    text-transform: lowercase;
    letter-spacing: 0.04em;
}
.x-asset-eg code {
    background: transparent;
    padding: 0;
    color: var(--v3-accent-soft);
    font-size: 12.5px;
}
.x-asset-eg b {
    color: var(--v3-ink);
    font-weight: 600;
    font-variant-numeric: tabular-nums;
}

@media (max-width: 800px) {
    .x-assets-grid { grid-template-columns: 1fr; }
}

/* ============================================================
   §5 — SETUP (list + terminal 2-col)
   ============================================================ */

.x-setup {
    padding: 96px 0 96px;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}
.x-setup-grid {
    display: grid;
    grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
    gap: 48px;
    align-items: start;
}
.x-setup-copy { min-width: 0; }
.x-setup-list {
    counter-reset: xstep;
    list-style: none;
    padding: 0;
    margin: 0 0 28px;
}
.x-setup-list li {
    counter-increment: xstep;
    position: relative;
    padding: 18px 0 18px 44px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    font-family: var(--v3-sans, 'Satoshi', system-ui, sans-serif);
    font-size: 15px;
    line-height: 1.6;
    color: rgba(255, 255, 255, 0.80);
}
.x-setup-list li::before {
    content: counter(xstep, decimal-leading-zero);
    position: absolute;
    left: 0;
    top: 20px;
    font-family: var(--v3-mono, 'JetBrains Mono', monospace);
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.08em;
    color: var(--v3-accent-soft);
    font-variant-numeric: tabular-nums;
}
.x-setup-list li b { color: var(--v3-ink); font-weight: 600; }
.x-setup-list li em { font-style: italic; color: rgba(255, 255, 255, 0.65); }
.x-setup-list li code {
    font-family: var(--v3-mono, 'JetBrains Mono', monospace);
    font-size: 12.5px;
    padding: 1px 5px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 4px;
    color: var(--v3-accent-soft);
}
.x-setup-cta { margin: 0; }

/* Code block — no fake window chrome, typographic frame */
.x-code {
    margin: 0;
    padding: 0;
    background: rgba(12, 15, 21, 0.85);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 14px;
    overflow: hidden;
}
.x-code-cap {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 18px;
    margin: 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    background: rgba(255, 255, 255, 0.015);
}
.x-code-lbl {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-family: var(--v3-mono, 'JetBrains Mono', monospace);
    font-size: 11px;
    font-weight: 500;
    letter-spacing: 0.06em;
    color: rgba(255, 255, 255, 0.55);
    text-transform: lowercase;
}
.x-code-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: #5FE3A8;
    box-shadow: 0 0 6px #5FE3A8;
    animation: x-pulse 2s ease-in-out infinite;
}
.x-code-copy {
    appearance: none;
    -webkit-appearance: none;
    background: transparent;
    border: 0;
    padding: 4px 10px;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-family: var(--v3-mono, 'JetBrains Mono', monospace);
    font-size: 11px;
    color: rgba(255, 255, 255, 0.55);
    cursor: pointer;
    border-radius: 6px;
    transition: color 140ms ease, background 140ms ease;
    text-transform: lowercase;
}
.x-code-copy:hover {
    color: var(--v3-accent-soft);
    background: color-mix(in oklab, var(--v3-accent-soft) 6%, transparent);
}
.x-code pre {
    margin: 0;
    padding: 22px 22px 24px;
    font-family: var(--v3-mono, 'JetBrains Mono', monospace);
    font-size: 12.5px;
    line-height: 1.7;
    color: rgba(255, 255, 255, 0.85);
    overflow-x: auto;
    white-space: pre;
}

@media (max-width: 900px) {
    .x-setup-grid { grid-template-columns: 1fr; gap: 32px; }
}

/* ============================================================
   §6 — PROMPT COOKBOOK
   ============================================================ */

.x-cookbook {
    padding: 96px 0 96px;
    background: linear-gradient(180deg,
        rgba(255, 255, 255, 0.012) 0%,
        transparent 100%);
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}
.x-prompts {
    list-style: none;
    margin: 0;
    padding: 0;
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px;
    max-width: 900px;
}
.x-prompt {
    display: grid;
    grid-template-columns: 22px 1fr;
    gap: 14px;
    align-items: baseline;
    padding: 18px 22px;
    background: rgba(20, 24, 32, 0.5);
    border: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: 12px;
    font-family: var(--v3-sans, 'Satoshi', system-ui, sans-serif);
    font-size: 15px;
    line-height: 1.55;
    color: rgba(255, 255, 255, 0.85);
    transition: border-color 200ms ease;
}
.x-prompt:hover {
    border-color: color-mix(in oklab, var(--v3-accent-soft) 34%, transparent);
}
.x-prompt-mark {
    font-family: var(--v3-mono, 'JetBrains Mono', monospace);
    font-size: 18px;
    color: var(--v3-accent-soft);
    line-height: 1;
}
.x-prompt-txt code {
    font-family: var(--v3-mono, 'JetBrains Mono', monospace);
    font-size: 13px;
    padding: 1px 5px;
    background: rgba(255, 255, 255, 0.06);
    border-radius: 4px;
    color: var(--v3-accent-soft);
}
@media (max-width: 720px) {
    .x-prompts { grid-template-columns: 1fr; }
}

/* ============================================================
   §7 — FAQ (disclosure list)
   ============================================================ */

.x-faq {
    padding: 96px 0 112px;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}
.x-faq-list {
    max-width: 820px;
    margin: 8px 0 0;
    padding: 0;
    border-top: 1px solid rgba(255, 255, 255, 0.06);
}
.x-faq-item {
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}
.x-faq-item summary {
    list-style: none;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    padding: 22px 0;
    cursor: pointer;
    font-family: var(--v3-sans, 'Satoshi', system-ui, sans-serif);
    font-size: 16.5px;
    font-weight: 500;
    color: rgba(255, 255, 255, 0.92);
    transition: color 140ms ease;
}
.x-faq-item summary::-webkit-details-marker { display: none; }
.x-faq-item summary i {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.35);
    transition: transform 220ms cubic-bezier(0.2, 0.9, 0.2, 1), color 140ms ease;
}
.x-faq-item[open] summary i {
    transform: rotate(45deg);
    color: var(--v3-accent-soft);
}
.x-faq-item summary:hover { color: var(--v3-accent-soft); }
.x-faq-body {
    padding: 0 0 26px;
    max-width: 62ch;
}
.x-faq-body p {
    margin: 0;
    font-family: var(--v3-sans, 'Satoshi', system-ui, sans-serif);
    font-size: 15px;
    line-height: 1.68;
    color: rgba(255, 255, 255, 0.72);
}
.x-faq-body a {
    color: var(--v3-accent-soft);
    text-decoration: none;
    border-bottom: 1px solid color-mix(in oklab, var(--v3-accent-soft) 40%, transparent);
}

/* ============================================================
   §8 — Closing CTA card
   ============================================================ */

.x-cta {
    padding: 80px 0 112px;
}
.x-cta-card {
    padding: 56px 48px;
    background:
        radial-gradient(circle at 82% 20%,
            color-mix(in oklab, var(--v3-accent-soft) 12%, transparent),
            transparent 55%),
        linear-gradient(180deg,
            rgba(20, 24, 32, 0.8) 0%,
            rgba(12, 15, 21, 0.9) 100%);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 22px;
    display: grid;
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
    gap: 40px;
    align-items: center;
}
.x-cta-card .x-eyebrow { margin-bottom: 18px; }
.x-cta-title {
    margin: 0 0 12px;
    font-family: var(--v3-display, 'Satoshi', system-ui, sans-serif);
    font-weight: 700;
    font-size: clamp(28px, 3.2vw, 42px);
    line-height: 1.05;
    letter-spacing: -0.03em;
    color: var(--v3-ink);
}
.x-cta-title em {
    font-style: normal;
    background: linear-gradient(120deg, var(--v3-accent-soft) 0%, #b08cff 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    color: transparent;
}
.x-cta-sub {
    margin: 0;
    font-size: 15.5px;
    line-height: 1.6;
    color: rgba(255, 255, 255, 0.72);
    max-width: 42ch;
}
.x-cta-actions {
    display: inline-flex;
    flex-direction: column;
    gap: 12px;
    justify-self: end;
}

@media (max-width: 800px) {
    .x-cta-card {
        grid-template-columns: 1fr;
        padding: 40px 28px;
        gap: 24px;
    }
    .x-cta-actions { justify-self: start; flex-direction: row; flex-wrap: wrap; }
}

/* ============================================================
   Footer
   ============================================================ */

.x-footer {
    padding: 32px 0 48px;
    border-top: 1px solid rgba(255, 255, 255, 0.06);
}
.x-footer-line {
    margin: 0;
    font-family: var(--v3-mono, 'JetBrains Mono', monospace);
    font-size: 12px;
    color: rgba(255, 255, 255, 0.55);
    text-align: left;
}
.x-footer-line a {
    color: rgba(255, 255, 255, 0.75);
    text-decoration: none;
    transition: color 140ms ease;
}
.x-footer-line a:hover { color: var(--v3-accent-soft); }
.x-footer-sep {
    margin: 0 8px;
    color: rgba(255, 255, 255, 0.20);
}
.x-footer-copy { color: rgba(255, 255, 255, 0.35); margin-left: 4px; }

/* ============================================================
   Responsive — hero cluster collapses on narrow
   ============================================================ */

@media (max-width: 1100px) {
    .x-cluster { min-height: 500px; }
    .x-tile-prompt { left: -12px; width: 290px; }
    .x-tile-agent { left: 20px; }
    .x-tile-proof { right: 0; }
}

@media (max-width: 900px) {
    .x-hero { padding: 64px 0 96px; }
    .x-hero > .x-container {
        grid-template-columns: 1fr;
        gap: 56px;
    }
    .x-hero-stats { max-width: 100%; }
    .x-cluster {
        min-height: auto;
        display: flex;
        flex-direction: column;
        gap: 16px;
    }
    .x-tile {
        position: static;
        transform: none !important;
        width: 100% !important;
    }
    .x-tile-prompt { order: 1; }
    .x-tile-agent { order: 2; }
    .x-tile-proof { order: 3; }
}

@media (max-width: 640px) {
    .x-hero { padding: 48px 0 72px; }
    .x-hero-title { font-size: clamp(32px, 8vw, 42px); }
    .x-hero-lede { font-size: 15px; }
    .x-hero-stats { grid-template-columns: repeat(2, 1fr); gap: 20px; }

    .x-steps, .x-spec, .x-assets, .x-setup, .x-cookbook, .x-faq { padding: 64px 0 56px; }
    .x-h2 { font-size: clamp(24px, 7vw, 32px); }
    .x-section-sub { font-size: 14.5px; }

    .x-step { padding: 20px 18px; }
    .x-step-title { font-size: 18px; }

    .x-asset { padding: 22px 20px; grid-template-columns: 44px 1fr; gap: 14px; }
    .x-asset-mark { width: 44px; height: 44px; font-size: 18px; }
    .x-asset-name { font-size: 22px; }

    .x-code pre { font-size: 11.5px; padding: 18px 16px; }

    .x-cta-card { padding: 32px 22px; }
    .x-cta-actions { flex-direction: column; }
}