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

:root {
    --blue: #4a8aff;
    --blue-dim: rgba(74, 143, 255, 0.15);
    --blue-border: rgba(74, 143, 255, 0.2);
    --text-primary: #e8f2ff;
    --text-secondary: #8aaad0;
    --text-muted: #4a6a9a;
    --bg-dark: #040814;
    --bg-section: #060c1a;
    --amber: #ffb347;
    --green: #5ee8b0;
    --section-max: 1100px;
}

html {
    scroll-behavior: smooth;
}

body {
    background: #040814;
    color: var(--text-primary);
    font-family: 'Exo 2', sans-serif;
    overflow-x: hidden;
    min-height: 100vh;
}

/* ── STARS ── */
.stars-small {
    position: fixed;
    width: 1px; height: 1px;
    border-radius: 50%;
    background: transparent;
    pointer-events: none;
    z-index: 0;
    box-shadow:
        1181px 879px 0 rgba(255,255,255,0.25),
        1045px 747px 0 rgba(255,255,255,0.20),
        1189px 206px 0 rgba(255,255,255,0.22),
        872px  13px  0 rgba(255,255,255,0.19),
        295px  736px 0 rgba(255,255,255,0.26),
        1054px 492px 0 rgba(255,255,255,0.29),
        1121px 521px 0 rgba(255,255,255,0.30),
        926px  719px 0 rgba(255,255,255,0.20),
        452px  13px  0 rgba(255,255,255,0.23),
        880px  571px 0 rgba(255,255,255,0.24),
        1273px 700px 0 rgba(255,255,255,0.20),
        945px  217px 0 rgba(255,255,255,0.25),
        337px  347px 0 rgba(255,255,255,0.19),
        887px  753px 0 rgba(255,255,255,0.20),
        335px  354px 0 rgba(255,255,255,0.29),
        955px  443px 0 rgba(255,255,255,0.26),
        133px  125px 0 rgba(255,255,255,0.27),
        344px  130px 0 rgba(255,255,255,0.21),
        280px  608px 0 rgba(255,255,255,0.20),
        976px  642px 0 rgba(255,255,255,0.16),
        428px  29px  0 rgba(255,255,255,0.27),
        595px  288px 0 rgba(255,255,255,0.21),
        353px  454px 0 rgba(255,255,255,0.24),
        378px  872px 0 rgba(255,255,255,0.20);
    animation: twinkle 4s ease-in-out infinite alternate;
}
.stars-medium {
    position: fixed;
    width: 2px; height: 2px;
    border-radius: 50%;
    background: transparent;
    pointer-events: none;
    z-index: 0;
    box-shadow:
        1133px 21px  0 rgba(255,255,255,0.44),
        60px   157px 0 rgba(255,255,255,0.47),
        1152px 250px 0 rgba(255,255,255,0.40),
        665px  831px 0 rgba(255,255,255,0.44),
        103px  366px 0 rgba(255,255,255,0.38),
        235px  838px 0 rgba(255,255,255,0.38),
        695px  668px 0 rgba(255,255,255,0.46),
        978px  630px 0 rgba(255,255,255,0.50),
        434px  484px 0 rgba(255,255,255,0.46);
    animation: twinkle 6s ease-in-out infinite alternate;
    animation-delay: 1.5s;
}
.stars-large {
    position: fixed;
    width: 3px; height: 3px;
    border-radius: 50%;
    background: transparent;
    pointer-events: none;
    z-index: 0;
    box-shadow:
        41px   179px 0 rgba(255,255,255,0.76),
        1129px 425px 0 rgba(255,255,255,0.70),
        317px  225px 0 rgba(255,255,255,0.79);
    animation: twinkle 8s ease-in-out infinite alternate;
    animation-delay: 3s;
}
@keyframes twinkle {
    0%   { opacity: 1; }
    40%  { opacity: 0.3; }
    70%  { opacity: 0.8; }
    100% { opacity: 0.5; }
}

/* ── SCANLINES ── */
.scanlines {
    position: fixed;
    inset: 0;
    background: repeating-linear-gradient(
        0deg,
        transparent,
        transparent 0px,
        rgba(0,0,20,0.15) 2px,
        rgba(0,0,20,0.15) 4px
    );
    pointer-events: none;
    z-index: 1000;
}

/* ── NAV ── */
.nav {
    position: sticky;
    top: 0;
    z-index: 500;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 2rem;
    background: rgba(4, 8, 20, 0.85);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--blue-border);
}
.nav-home {
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}
.nav-site-name {
    font-family: 'Orbitron', sans-serif;
    font-size: 1rem;
    font-weight: 900;
    color: var(--text-primary);
    letter-spacing: 0.1em;
    text-shadow: 0 0 20px rgba(74,143,255,1.5);
}
.nav-sep {
    color: var(--text-muted);
    font-size: 0.9rem;
}
.nav-page {
    font-family: 'Exo 2', sans-serif;
    font-size: 0.85rem;
    color: var(--text-muted);
    letter-spacing: 0.15em;
    text-transform: uppercase;
}
.nav-status {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}
.status-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--green);
    animation: pulse-dot 2s ease-in-out infinite;
}
@keyframes pulse-dot {
    0%, 100% { opacity: 1; box-shadow: 0 0 6px var(--green); }
    50%       { opacity: 0.4; box-shadow: none; }
}
.nav-status-text {
    font-family: 'Exo 2', sans-serif;
    font-size: 0.65rem;
    color: var(--green);
    letter-spacing: 0.2em;
    font-weight: 600;
}

/* ── HERO ── */
.hero {
    position: relative;
    z-index: 2;
    min-height: 70vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 6rem 2rem 4rem;
    background:
        radial-gradient(ellipse at 50% 0%, rgba(74, 143, 255, 0.12), transparent 60%),
        radial-gradient(ellipse at 20% 80%, rgba(138, 43, 226, 0.15), transparent 50%);
}
.hero-inner {
    max-width: 700px;
}
.hero-label {
    font-family: 'Exo 2', sans-serif;
    font-size: 0.65rem;
    color: var(--text-muted);
    letter-spacing: 0.25em;
    text-transform: uppercase;
    margin-bottom: 1.5rem;
}
.hero-title {
    font-family: 'Orbitron', sans-serif;
    font-size: clamp(2.8rem, 10vw, 6rem);
    font-weight: 900;
    color: var(--text-primary);
    letter-spacing: 0.06em;
    text-shadow: 0 0 40px rgba(74,143,255,0.5), 0 0 80px rgba(74,143,255,0.2);
    line-height: 1.05;
    margin-bottom: 1rem;
}
.hero-sub {
    font-family: 'Exo 2', sans-serif;
    font-size: clamp(0.9rem, 2.5vw, 1.15rem);
    color: var(--text-secondary);
    letter-spacing: 0.05em;
    margin-bottom: 2.5rem;
    font-style: italic;
}
.hero-meta {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 2rem;
    margin-bottom: 3rem;
}
.hero-meta-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.3rem;
}
.meta-label {
    font-size: 0.6rem;
    color: var(--text-muted);
    letter-spacing: 0.2em;
    text-transform: uppercase;
}
.meta-value {
    font-family: 'Orbitron', sans-serif;
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: 0.05em;
}
.meta-green { color: var(--green); }

/* waveform animation */
.hero-waveform {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 3px;
    height: 40px;
}
.hero-waveform span {
    display: block;
    width: 3px;
    border-radius: 2px;
    background: var(--blue);
    opacity: 0.6;
    animation: wave 1.4s ease-in-out infinite;
}
.hero-waveform span:nth-child(1)  { animation-delay: 0.0s; }
.hero-waveform span:nth-child(2)  { animation-delay: 0.05s; }
.hero-waveform span:nth-child(3)  { animation-delay: 0.10s; }
.hero-waveform span:nth-child(4)  { animation-delay: 0.15s; }
.hero-waveform span:nth-child(5)  { animation-delay: 0.20s; }
.hero-waveform span:nth-child(6)  { animation-delay: 0.25s; }
.hero-waveform span:nth-child(7)  { animation-delay: 0.30s; }
.hero-waveform span:nth-child(8)  { animation-delay: 0.35s; }
.hero-waveform span:nth-child(9)  { animation-delay: 0.40s; }
.hero-waveform span:nth-child(10) { animation-delay: 0.35s; }
.hero-waveform span:nth-child(11) { animation-delay: 0.30s; }
.hero-waveform span:nth-child(12) { animation-delay: 0.25s; }
.hero-waveform span:nth-child(13) { animation-delay: 0.20s; }
.hero-waveform span:nth-child(14) { animation-delay: 0.15s; }
.hero-waveform span:nth-child(15) { animation-delay: 0.10s; }
.hero-waveform span:nth-child(16) { animation-delay: 0.05s; }
.hero-waveform span:nth-child(17) { animation-delay: 0.0s; }
.hero-waveform span:nth-child(18) { animation-delay: 0.05s; }
.hero-waveform span:nth-child(19) { animation-delay: 0.10s; }
.hero-waveform span:nth-child(20) { animation-delay: 0.15s; }
.hero-waveform span:nth-child(21) { animation-delay: 0.20s; }
.hero-waveform span:nth-child(22) { animation-delay: 0.25s; }
.hero-waveform span:nth-child(23) { animation-delay: 0.30s; }
.hero-waveform span:nth-child(24) { animation-delay: 0.35s; }
.hero-waveform span:nth-child(25) { animation-delay: 0.40s; }
.hero-waveform span:nth-child(26) { animation-delay: 0.35s; }
.hero-waveform span:nth-child(27) { animation-delay: 0.30s; }
.hero-waveform span:nth-child(28) { animation-delay: 0.25s; }
.hero-waveform span:nth-child(29) { animation-delay: 0.20s; }
.hero-waveform span:nth-child(30) { animation-delay: 0.15s; }

@keyframes wave {
    0%, 100% { height: 6px;  opacity: 0.3; }
    50%       { height: 30px; opacity: 0.8; }
}

/* ── SECTIONS ── */
.section {
    position: relative;
    z-index: 2;
    padding: 5rem 2rem;
    border-top: 1px solid rgba(74, 143, 255, 0.08);
}
.section-dark {
    background: rgba(6, 12, 26, 0.7);
}
.section-inner {
    max-width: var(--section-max);
    margin: 0 auto;
}
.section-header {
    display: flex;
    align-items: baseline;
    gap: 1.2rem;
    margin-bottom: 2.5rem;
    flex-wrap: wrap;
}
.section-number {
    font-family: 'Orbitron', sans-serif;
    font-size: 0.7rem;
    font-weight: 700;
    color: var(--text-muted);
    letter-spacing: 0.2em;
    padding-top: 0.15rem;
}
.section-title {
    font-family: 'Orbitron', sans-serif;
    font-size: clamp(1.2rem, 4vw, 1.8rem);
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: 0.05em;
    text-shadow: 0 0 20px rgba(74,143,255,0.3);
}
.section-sub-label {
    font-size: 0.7rem;
    color: var(--text-muted);
    letter-spacing: 0.2em;
    text-transform: uppercase;
    margin-top: -1.5rem;
    margin-bottom: 2rem;
}
.section-intro {
    font-size: 0.95rem;
    color: var(--text-secondary);
    margin-bottom: 2.5rem;
    letter-spacing: 0.05em;
}

/* two-col prose */
.two-col {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
}
.prose-block p {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 1rem;
}

/* flow diagram */
.flow-diagram {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-top: 1.5rem;
    padding: 1.25rem;
    border: 1px solid var(--blue-border);
    border-radius: 12px;
    background: var(--blue-dim);
}
.flow-step {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.35rem;
    flex: 1;
    min-width: 70px;
}
.flow-icon {
    font-size: 1.2rem;
}
.flow-label {
    font-size: 0.6rem;
    color: var(--text-muted);
    letter-spacing: 0.1em;
    text-align: center;
    text-transform: uppercase;
}
.flow-arrow {
    color: var(--blue);
    font-size: 1rem;
    opacity: 0.5;
}

/* ── PARTS RAIL ── */
.parts-rail-wrap {
    position: relative;
    margin: 0 -2rem;
}
.parts-rail {
    display: flex;
    gap: 1.25rem;
    overflow-x: auto;
    padding: 0.5rem 2rem 1.5rem;
    scroll-snap-type: x mandatory;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
}
.parts-rail::-webkit-scrollbar { display: none; }
.rail-fade-right {
    position: absolute;
    right: 0; top: 0; bottom: 0;
    width: 80px;
    background: linear-gradient(to right, transparent, rgba(6,12,26,0.95));
    pointer-events: none;
}
.rail-hint {
    font-size: 0.6rem;
    color: var(--text-muted);
    letter-spacing: 0.2em;
    text-transform: uppercase;
    margin-bottom: 3rem;
    text-align: right;
    padding-right: 1rem;
}

.part-card {
    flex: 0 0 260px;
    scroll-snap-align: start;
    background: rgba(4, 8, 20, 0.8);
    border: 1px solid var(--blue-border);
    border-radius: 16px;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    transition: border-color 0.3s, transform 0.3s;
}
.part-card:hover {
    border-color: rgba(74,143,255,0.45);
    transform: translateY(-3px);
}
.part-img-wrap {
    width: 100%;
    height: 180px;
    overflow: hidden;
}
.part-img-placeholder {
    width: 100%;
    height: 100%;
    background: rgba(74, 143, 255, 0.06);
    border-bottom: 1px solid var(--blue-border);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1rem;
}
.part-img-label {
    font-size: 0.65rem;
    color: var(--text-muted);
    letter-spacing: 0.1em;
    text-align: center;
    line-height: 1.5;
    font-style: italic;
}
.part-info {
    padding: 1.25rem;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    flex: 1;
}
.part-name {
    font-family: 'Orbitron', sans-serif;
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: 0.05em;
}
.part-price {
    font-family: 'Exo 2', sans-serif;
    font-size: 0.8rem;
    font-weight: 700;
    color: var(--blue);
    letter-spacing: 0.05em;
}
.part-desc {
    font-size: 0.78rem;
    color: var(--text-secondary);
    line-height: 1.6;
    flex: 1;
}
.part-link {
    font-size: 0.7rem;
    color: var(--text-muted);
    letter-spacing: 0.15em;
    text-transform: uppercase;
    text-decoration: none;
    margin-top: 0.5rem;
    transition: color 0.2s;
}
.part-link:hover { color: var(--blue); }

/* ── GALLERY FILM STRIP ── */
.gallery-header {
    margin-bottom: 1.5rem;
}
.gallery-film {
    margin: 0 -2rem;
    overflow: hidden;
}
.gallery-strip {
    display: flex;
    gap: 1rem;
    overflow-x: auto;
    padding: 1rem 2rem 1.5rem;
    scroll-snap-type: x mandatory;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    align-items: center;
}
.gallery-strip::-webkit-scrollbar { display: none; }
.gallery-frame {
    flex: 0 0 300px;
    scroll-snap-align: start;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}
.gallery-frame--tilt-r { transform: rotate(1.5deg); }
.gallery-frame--tilt-l { transform: rotate(-1.5deg); }

.gallery-img-placeholder {
    width: 100%;
    height: 200px;
    background: rgba(74,143,255,0.05);
    border: 1px solid var(--blue-border);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1rem;
}
.gallery-img-placeholder span {
    font-size: 0.65rem;
    color: var(--text-muted);
    letter-spacing: 0.1em;
    text-align: center;
    line-height: 1.5;
    font-style: italic;
}
.gallery-caption {
    font-size: 0.65rem;
    color: var(--text-muted);
    letter-spacing: 0.15em;
    text-transform: uppercase;
    text-align: center;
}

/* ── LOCKED SETUP ── */
.badge-locked {
    font-family: 'Exo 2', sans-serif;
    font-size: 0.6rem;
    font-weight: 600;
    letter-spacing: 0.2em;
    color: var(--amber);
    border: 1px solid rgba(255, 179, 71, 0.3);
    border-radius: 6px;
    padding: 0.25rem 0.65rem;
}
.locked-block {
    position: relative;
    border: 1px solid rgba(255, 179, 71, 0.15);
    border-radius: 12px;
    overflow: hidden;
    min-height: 200px;
}
.locked-content {
    padding: 2rem;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    filter: blur(4px);
    user-select: none;
}
.locked-line {
    height: 10px;
    border-radius: 4px;
    background: rgba(74,143,255,0.1);
}
.locked-line--full  { width: 100%; }
.locked-line--wide  { width: 85%; }
.locked-line--med   { width: 65%; }
.locked-line--short { width: 45%; }
.locked-overlay {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    background: rgba(4, 8, 20, 0.55);
}
.locked-icon {
    font-size: 1.5rem;
    opacity: 0.4;
}
.locked-msg {
    font-size: 0.75rem;
    color: var(--amber);
    letter-spacing: 0.15em;
    text-align: center;
    line-height: 1.8;
    opacity: 0.7;
}

/* ── CODE SECTION ── */
.view-code-link {
    font-family: 'Exo 2', sans-serif;
    font-size: 0.7rem;
    color: var(--blue);
    letter-spacing: 0.15em;
    text-transform: uppercase;
    text-decoration: none;
    margin-left: auto;
    transition: color 0.2s;
}
.view-code-link:hover { color: var(--text-primary); }

.code-blocks {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}
.code-entry {
    border: 1px solid var(--blue-border);
    border-radius: 12px;
    overflow: hidden;
    background: rgba(4, 8, 20, 0.6);
}
.code-entry--highlight {
    border-color: rgba(255, 179, 71, 0.35);
    background: rgba(255, 179, 71, 0.03);
}
.code-entry-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 0.9rem 1.25rem;
    border-bottom: 1px solid var(--blue-border);
    background: rgba(74,143,255,0.04);
}
.code-entry--highlight .code-entry-header {
    border-bottom-color: rgba(255,179,71,0.2);
    background: rgba(255,179,71,0.05);
}
.code-tag {
    font-family: 'Exo 2', sans-serif;
    font-size: 0.58rem;
    font-weight: 600;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--blue);
    background: var(--blue-dim);
    border: 1px solid var(--blue-border);
    border-radius: 4px;
    padding: 0.2rem 0.5rem;
    white-space: nowrap;
}
.code-entry--highlight .code-tag {
    color: var(--amber);
    background: rgba(255,179,71,0.08);
    border-color: rgba(255,179,71,0.3);
}
.code-entry-title {
    font-family: 'Orbitron', sans-serif;
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: 0.05em;
}
.code-entry-body {
    padding: 1.25rem;
}
.code-entry-body p {
    font-size: 0.85rem;
    color: var(--text-secondary);
    line-height: 1.8;
}
.code-snippet {
    border-top: 1px solid var(--blue-border);
}
.code-snippet pre {
    padding: 1.25rem;
    overflow-x: auto;
    margin: 0;
}
.code-snippet code {
    font-family: 'Courier New', Courier, monospace;
    font-size: 0.78rem;
    color: #7ec8ff;
    line-height: 1.7;
    white-space: pre;
}
.code-cta {
    margin-top: 2.5rem;
    text-align: center;
}
.cta-link {
    font-family: 'Exo 2', sans-serif;
    font-size: 0.8rem;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--text-muted);
    text-decoration: none;
    border: 1px solid var(--blue-border);
    border-radius: 8px;
    padding: 0.75rem 1.75rem;
    transition: color 0.2s, border-color 0.2s;
}
.cta-link:hover {
    color: var(--blue);
    border-color: rgba(74,143,255,0.5);
}

/* ── INLINE LINK ── */
.inline-link {
    color: var(--blue);
    text-decoration: none;
    border-bottom: 1px solid rgba(74,143,255,0.3);
    transition: color 0.2s, border-color 0.2s;
}
.inline-link:hover {
    color: var(--text-primary);
    border-color: rgba(74,143,255,0.7);
}

/* inline code */
.code-entry-body code, .prose-block code {
    font-family: 'Courier New', Courier, monospace;
    font-size: 0.8rem;
    color: #7ec8ff;
    background: rgba(74,143,255,0.08);
    border: 1px solid rgba(74,143,255,0.15);
    border-radius: 4px;
    padding: 0.1rem 0.35rem;
}

/* ── IMPORT LIST ── */
.import-list {
    display: flex;
    flex-direction: column;
    gap: 0;
    margin-top: 1rem;
    border: 1px solid var(--blue-border);
    border-radius: 8px;
    overflow: hidden;
}
.import-row {
    display: grid;
    grid-template-columns: 160px 1fr 180px;
    gap: 1rem;
    padding: 0.85rem 1rem;
    border-bottom: 1px solid rgba(74,143,255,0.07);
    align-items: start;
    transition: background 0.2s;
}
.import-row:last-child { border-bottom: none; }
.import-row:hover { background: rgba(74,143,255,0.04); }
.import-name {
    font-family: 'Courier New', Courier, monospace;
    font-size: 0.8rem;
    color: #7ec8ff;
    font-weight: 600;
    padding-top: 0.1rem;
}
.import-desc {
    font-size: 0.8rem;
    color: var(--text-secondary);
    line-height: 1.6;
}
.import-install {
    font-size: 0.72rem;
    text-align: right;
}
.import-install code {
    font-size: 0.7rem;
}
.import-builtin {
    color: var(--text-muted);
    letter-spacing: 0.1em;
    font-family: 'Exo 2', sans-serif;
    text-transform: uppercase;
    font-size: 0.65rem;
    padding-top: 0.15rem;
    display: block;
}

@media (max-width: 700px) {
    .import-row {
        grid-template-columns: 1fr;
        gap: 0.35rem;
    }
    .import-install { text-align: left; }
}

/* ── FEATURE GRID ── */
.feature-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
}
.feature-category {
    border: 1px solid var(--blue-border);
    border-radius: 12px;
    padding: 1.5rem;
    background: rgba(4,8,20,0.4);
}
.feature-cat-label {
    font-family: 'Orbitron', sans-serif;
    font-size: 0.65rem;
    font-weight: 700;
    color: var(--blue);
    letter-spacing: 0.2em;
    text-transform: uppercase;
    margin-bottom: 1rem;
}
.feature-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}
.feature-list li {
    font-size: 0.82rem;
    color: var(--text-secondary);
    padding-left: 1rem;
    position: relative;
    line-height: 1.5;
}
.feature-list li::before {
    content: '·';
    position: absolute;
    left: 0;
    color: var(--blue);
    opacity: 0.5;
}

/* ── ERROR LOG ── */
.error-log {
    display: flex;
    flex-direction: column;
    gap: 0;
    border: 1px solid rgba(255,179,71,0.15);
    border-radius: 12px;
    overflow: hidden;
}
.log-entry {
    display: flex;
    gap: 1.5rem;
    padding: 1.25rem 1.5rem;
    border-bottom: 1px solid rgba(255,179,71,0.08);
    transition: background 0.2s;
}
.log-entry:last-child { border-bottom: none; }
.log-entry:hover { background: rgba(255,179,71,0.03); }
.log-prefix {
    font-family: 'Orbitron', sans-serif;
    font-size: 0.6rem;
    font-weight: 700;
    color: var(--amber);
    opacity: 0.5;
    letter-spacing: 0.1em;
    white-space: nowrap;
    padding-top: 0.15rem;
    min-width: 60px;
}
.log-body {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
}
.log-title {
    font-family: 'Exo 2', sans-serif;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--amber);
    letter-spacing: 0.05em;
}
.log-text {
    font-size: 0.82rem;
    color: var(--text-secondary);
    line-height: 1.7;
}

/* ── WHAT I LEARNED ── */
.next-mission {
    margin-top: 4rem;
    padding-top: 2rem;
    border-top: 1px solid var(--blue-border);
    display: flex;
    align-items: center;
    gap: 1.5rem;
}
.next-label {
    font-family: 'Exo 2', sans-serif;
    font-size: 0.6rem;
    color: var(--text-muted);
    letter-spacing: 0.2em;
    text-transform: uppercase;
}
.next-link {
    font-family: 'Exo 2', sans-serif;
    font-size: 0.8rem;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--blue);
    text-decoration: none;
    transition: color 0.2s;
}
.next-link:hover { color: var(--text-primary); }

/* ── FOOTER ── */
.footer {
    position: relative;
    z-index: 2;
    text-align: center;
    padding: 2rem;
    border-top: 1px solid rgba(74,143,255,0.08);
}
.footer-text {
    font-size: 0.65rem;
    color: var(--text-muted);
    letter-spacing: 0.2em;
    text-transform: uppercase;
}

/* troubleshoot blocks */
.troubleshoot-block {
    margin-top: 1rem;
    border: 1px solid rgba(255,179,71,0.15);
    border-radius: 8px;
    overflow: hidden;
}
.ts-label {
    font-family: 'Exo 2', sans-serif;
    font-size: 0.58rem;
    font-weight: 700;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--amber);
    opacity: 0.7;
    padding: 0.55rem 1rem;
    background: rgba(255,179,71,0.04);
    border-bottom: 1px solid rgba(255,179,71,0.1);
}
.ts-row {
    display: grid;
    grid-template-columns: 240px 1fr;
    gap: 1rem;
    padding: 0.65rem 1rem;
    border-bottom: 1px solid rgba(255,179,71,0.06);
    align-items: start;
}
.ts-row:last-child { border-bottom: none; }
.ts-prob {
    font-family: 'Courier New', Courier, monospace;
    font-size: 0.73rem;
    color: var(--amber);
    opacity: 0.75;
    line-height: 1.5;
    padding-top: 0.05rem;
}
.ts-fix {
    font-size: 0.78rem;
    color: var(--text-secondary);
    line-height: 1.6;
}
.ts-fix code {
    font-family: 'Courier New', Courier, monospace;
    font-size: 0.72rem;
    color: #7ec8ff;
    background: rgba(74,143,255,0.08);
    border: 1px solid rgba(74,143,255,0.15);
    border-radius: 3px;
    padding: 0.05rem 0.3rem;
}

/* ── SETUP STEPS ── */
.setup-step {
    border-left: 1px solid var(--blue-border);
    margin-left: 1rem;
    padding-left: 2rem;
    padding-bottom: 2.5rem;
    position: relative;
}
.setup-step--last {
    border-left-color: transparent;
}
.setup-step-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.25rem;
}
.step-num {
    position: absolute;
    left: -1rem;
    width: 2rem;
    height: 2rem;
    background: var(--bg-dark);
    border: 1px solid var(--blue-border);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: 'Orbitron', sans-serif;
    font-size: 0.55rem;
    font-weight: 700;
    color: var(--blue);
    letter-spacing: 0.1em;
    flex-shrink: 0;
}
.step-title {
    font-family: 'Orbitron', sans-serif;
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: 0.04em;
}
.setup-step-body p {
    font-size: 0.85rem;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 0.85rem;
}
.setup-step-body p:last-child { margin-bottom: 0; }

.setup-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    margin: 0.75rem 0;
    padding-left: 1rem;
}
.setup-list li {
    font-size: 0.83rem;
    color: var(--text-secondary);
    line-height: 1.6;
    position: relative;
    padding-left: 0.75rem;
}
.setup-list li::before {
    content: '·';
    position: absolute;
    left: 0;
    color: var(--blue);
    opacity: 0.5;
}
.setup-list strong {
    color: var(--text-primary);
    font-weight: 600;
}

/* terminal command blocks */
.cmd-block {
    background: rgba(0, 0, 0, 0.4);
    border: 1px solid rgba(74,143,255,0.12);
    border-left: 3px solid rgba(74,143,255,0.35);
    border-radius: 0 6px 6px 0;
    padding: 0.7rem 1rem;
    margin: 0.6rem 0;
    overflow-x: auto;
}
.cmd-block code {
    font-family: 'Courier New', Courier, monospace;
    font-size: 0.78rem;
    color: #7ec8ff;
    line-height: 1.7;
    white-space: pre;
    background: none;
    border: none;
    padding: 0;
}
.cmd-block--output {
    border-left-color: rgba(94,232,176,0.35);
}
.cmd-block--output code {
    color: var(--green);
    opacity: 0.8;
}

/* callouts */
.callout {
    border-radius: 8px;
    padding: 0.9rem 1.1rem;
    margin: 1rem 0;
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
}
.callout--info {
    background: rgba(74,143,255,0.06);
    border: 1px solid rgba(74,143,255,0.2);
}
.callout--warn {
    background: rgba(255,179,71,0.05);
    border: 1px solid rgba(255,179,71,0.2);
}
.callout-label {
    font-family: 'Exo 2', sans-serif;
    font-size: 0.6rem;
    font-weight: 700;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--blue);
}
.callout--warn .callout-label { color: var(--amber); }
.callout-text {
    font-size: 0.82rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* hardware variants */
.variant-tabs {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin: 0.75rem 0;
}
.variant-block {
    border: 1px solid var(--blue-border);
    border-radius: 8px;
    padding: 1.1rem 1.25rem;
    background: rgba(74,143,255,0.03);
}
.variant-block--alt {
    border-color: rgba(94,232,176,0.15);
    background: rgba(94,232,176,0.03);
}
.variant-label {
    font-family: 'Exo 2', sans-serif;
    font-size: 0.62rem;
    font-weight: 700;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--blue);
    margin-bottom: 0.85rem;
}
.variant-block--alt .variant-label { color: var(--green); }
.variant-block p {
    font-size: 0.83rem;
    color: var(--text-secondary);
    line-height: 1.75;
    margin-bottom: 0.5rem;
}
.variant-block strong {
    color: var(--text-primary);
    font-weight: 600;
}

/* file tree */
.file-tree {
    background: rgba(0,0,0,0.3);
    border: 1px solid rgba(74,143,255,0.1);
    border-radius: 8px;
    padding: 1rem 1.25rem;
    margin: 0.75rem 0;
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
}
.tree-row {
    display: flex;
    align-items: center;
    font-family: 'Courier New', Courier, monospace;
    font-size: 0.78rem;
}
.tree-child { padding-left: 1.25rem; }
.tree-grandchild { padding-left: 2.5rem; }
.tree-child::before { content: '├─ '; color: var(--text-muted); margin-right: 0.25rem; }
.tree-grandchild::before { content: '└─ '; color: var(--text-muted); margin-right: 0.25rem; }
.tree-dir { color: var(--blue); }
.tree-file { color: var(--text-secondary); }
.tree-muted { color: var(--text-muted); font-style: italic; }

/* quick error table */
.error-quick {
    margin-top: 1.25rem;
    border: 1px solid rgba(255,179,71,0.15);
    border-radius: 8px;
    overflow: hidden;
}
.error-quick-row {
    display: grid;
    grid-template-columns: 220px 1fr;
    gap: 1rem;
    padding: 0.7rem 1rem;
    border-bottom: 1px solid rgba(255,179,71,0.08);
    align-items: start;
}
.error-quick-row:last-child { border-bottom: none; }
.eq-err {
    font-family: 'Courier New', Courier, monospace;
    font-size: 0.73rem;
    color: var(--amber);
}
.eq-fix {
    font-size: 0.78rem;
    color: var(--text-secondary);
    line-height: 1.5;
}

/* ── RESPONSIVE ── */
@media (max-width: 700px) {
    .ts-row { grid-template-columns: 1fr; gap: 0.2rem; }
    .error-quick-row { grid-template-columns: 1fr; gap: 0.25rem; }
    .setup-step { margin-left: 0.5rem; padding-left: 1.5rem; }
    .feature-grid { grid-template-columns: 1fr; }
    .nav { padding: 0.75rem 1.25rem; }
    .section { padding: 3.5rem 1.25rem; }
    .parts-rail-wrap { margin: 0 -1.25rem; }
    .parts-rail { padding: 0.5rem 1.25rem 1.5rem; }
    .gallery-film { margin: 0 -1.25rem; }
    .gallery-strip { padding: 1rem 1.25rem 1.5rem; }
    .hero { min-height: 50vh; padding: 4rem 1.25rem 3rem; }
    .log-entry { flex-direction: column; gap: 0.5rem; }
}