:root {
    --color-text: #1a1a2e;
    --color-text-secondary: #4a4a5a;
    --color-text-tertiary: #7a7a8a;
    --color-bg: #f8f9fc;
    --color-border: #d0d4e0;
    --color-grid: #e4e8f0;
    --color-accent: #f7931a;
    --color-status-shipped: #22c55e;
    --color-status-production: #eab308;
    --font-serif: 'EB Garamond', Georgia, serif;
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-mono: 'IBM Plex Mono', 'SF Mono', 'Consolas', monospace;
    --max-width: 680px;
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 3rem;
    --spacing-xl: 5rem;
    --chamfer: 12px;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    background: var(--color-bg);
    background-image:
        linear-gradient(var(--color-grid) 1px, transparent 1px),
        linear-gradient(90deg, var(--color-grid) 1px, transparent 1px);
    background-size: 40px 40px;
    color: var(--color-text);
    line-height: 1.6;
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
}

/* ============ HEADER ============ */
header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    background: rgba(248, 249, 252, 0.95);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--color-border);
}

.header-inner {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: var(--spacing-xs) var(--spacing-md);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    text-decoration: none;
    color: var(--color-text);
    line-height: 1;
}

.logo-icon {
    width: 28px;
    height: 28px;
    stroke-width: 1;
    color: var(--color-accent);
}

.logo-text {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    letter-spacing: 0.15em;
    font-weight: 500;
    color: var(--color-text);
    text-transform: uppercase;
}

nav {
    display: flex;
    gap: var(--spacing-lg);
}

nav a {
    text-decoration: none;
    color: var(--color-text-secondary);
    font-family: var(--font-mono);
    font-size: 0.7rem;
    font-weight: 500;
    letter-spacing: 0.1em;
    transition: color 0.2s ease;
    text-transform: uppercase;
}

nav a:hover {
    color: var(--color-accent);
}

/* ============ MAIN ============ */
main {
    padding-top: 70px;
}

/* ============ HERO ============ */
.hero {
    padding: var(--spacing-lg) var(--spacing-xl) var(--spacing-md);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xl);
    max-width: 1000px;
    margin: 0 auto;
    position: relative;
}

.hero-content {
    flex: 1;
    text-align: left;
}

.hero-image {
    width: auto;
    height: 420px;
    object-fit: contain;
    flex-shrink: 0;
    clip-path: polygon(
        var(--chamfer) 0,
        calc(100% - var(--chamfer)) 0,
        100% var(--chamfer),
        100% calc(100% - var(--chamfer)),
        calc(100% - var(--chamfer)) 100%,
        var(--chamfer) 100%,
        0 calc(100% - var(--chamfer)),
        0 var(--chamfer)
    );
}

.hero h1 {
    font-family: var(--font-mono);
    font-size: clamp(1.75rem, 5vw, 2.25rem);
    font-weight: 500;
    margin-bottom: 0.5rem;
    letter-spacing: -0.02em;
    line-height: 1.2;
    text-transform: uppercase;
}

.hero-subtitle {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    font-style: normal;
    color: var(--color-accent);
    margin-bottom: var(--spacing-md);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.3em;
}

.hero-description {
    font-family: var(--font-mono);
    color: var(--color-text-secondary);
    line-height: 1.75;
    font-size: 0.8rem;
    letter-spacing: 0.02em;
}

/* ============ SECTIONS ============ */
section {
    padding: var(--spacing-lg) 0;
    text-align: center;
}

.section-title {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.2em;
    margin-top: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
    max-width: var(--max-width);
    margin-left: 10%;
    margin-right: auto;
    padding: 0 var(--spacing-md);
    color: var(--color-text-secondary);
}

/* ============ PROJECTS ============ */
#work {
    max-width: none;
    padding-left: 0;
    padding-right: 0;
    position: relative;
}

.project-list {
    display: flex;
    flex-direction: column;
}

.project-item {
    border-bottom: 1px solid var(--color-border);
    position: relative;
}

.project-item::before {
    content: '';
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    bottom: -1px;
    width: 60px;
    height: 1px;
    background: var(--color-accent);
}

.project-item:last-child {
    border-bottom: none;
}

.project-item:last-child::before {
    display: none;
}

.project-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md) var(--spacing-md);
    max-width: 900px;
    margin: 0 auto;
    cursor: pointer;
    transition: background 0.2s ease;
}

.project-header:hover {
    background: rgba(247, 147, 26, 0.05);
}

.project-number {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    color: var(--color-accent);
    margin-right: var(--spacing-sm);
    opacity: 0.7;
}

.project-header-text {
    text-align: left;
}

.project-header-text h3 {
    font-family: var(--font-serif);
    font-size: 1.35rem;
    font-weight: 400;
    margin-bottom: 0.25rem;
    line-height: 1.3;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.project-header-text .project-meta {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--color-text-tertiary);
    margin: 0;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.status-indicator {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    display: inline-block;
    flex-shrink: 0;
}

.status-indicator.shipped {
    background: var(--color-status-shipped);
    box-shadow: 0 0 8px var(--color-status-shipped);
}

.status-indicator.production {
    background: var(--color-status-production);
    box-shadow: 0 0 8px var(--color-status-production);
}

.project-toggle {
    width: 24px;
    height: 24px;
    transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.project-toggle svg {
    width: 100%;
    height: 100%;
    stroke: var(--color-accent);
    stroke-width: 1.5;
    fill: none;
}

.project-item.expanded .project-toggle {
    transform: rotate(180deg);
}

/* Technical coordinate markers */
.carousel::before {
    content: 'X: 001';
    position: absolute;
    top: -20px;
    left: 0;
    font-family: var(--font-mono);
    font-size: 0.6rem;
    color: var(--color-text-tertiary);
    letter-spacing: 0.05em;
}

.carousel::after {
    content: 'Y: 001';
    position: absolute;
    top: 0;
    left: -50px;
    font-family: var(--font-mono);
    font-size: 0.6rem;
    color: var(--color-text-tertiary);
    letter-spacing: 0.05em;
    writing-mode: vertical-rl;
    transform: rotate(180deg);
}

.project-body {
    display: flex;
    flex-direction: column;
    align-items: center;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.6s cubic-bezier(0.4, 0, 0.2, 1),
                padding 0.6s cubic-bezier(0.4, 0, 0.2, 1),
                opacity 0.4s ease;
    opacity: 0;
    gap: var(--spacing-lg);
    padding: 0 var(--spacing-lg);
}

.project-item.expanded .project-body {
    max-height: 3000px;
    padding-top: var(--spacing-lg);
    padding-bottom: var(--spacing-xl);
    opacity: 1;
}

/* ============ CAROUSEL ============ */
.carousel {
    position: relative;
    width: 100%;
    max-width: 900px;
    margin: 0 auto;
    padding: 0 60px;
}

.carousel-viewport {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 50vh;
}

.carousel-slide {
    display: none;
    justify-content: center;
    align-items: center;
    width: 100%;
}

.carousel-slide.active {
    display: flex;
}

.carousel-slide img,
.carousel-slide video {
    max-height: 50vh;
    max-width: 100%;
    width: auto;
    height: auto;
    object-fit: contain;
    clip-path: polygon(
        var(--chamfer) 0,
        calc(100% - var(--chamfer)) 0,
        100% var(--chamfer),
        100% calc(100% - var(--chamfer)),
        calc(100% - var(--chamfer)) 100%,
        var(--chamfer) 100%,
        0 calc(100% - var(--chamfer)),
        0 var(--chamfer)
    );
}

.carousel-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 40px;
    height: 40px;
    background: var(--color-bg);
    border: 1px solid var(--color-accent);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease;
    z-index: 10;
    padding: 0;
    clip-path: polygon(6px 0, 100% 0, 100% calc(100% - 6px), calc(100% - 6px) 100%, 0 100%, 0 6px);
    color: var(--color-accent);
}

.carousel-btn:hover {
    background: var(--color-accent);
    color: var(--color-bg);
}

.carousel-btn svg {
    width: 16px;
    height: 16px;
    stroke: currentColor;
    stroke-width: 1.5;
    fill: none;
}

.carousel-btn-prev {
    left: 10px;
}

.carousel-btn-next {
    right: 10px;
}

.carousel-btn:disabled {
    opacity: 0.25;
    cursor: default;
}

.carousel-btn:disabled:hover {
    background: var(--color-bg);
    color: var(--color-text);
}

/* ============ PROJECT CONTENT ============ */
.project-content {
    max-width: 500px;
    width: 100%;
    text-align: left;
    align-self: center;
    padding-left: var(--spacing-md);
    border-left: 1px solid var(--color-border);
    position: relative;
}

.project-content::before {
    content: '';
    position: absolute;
    left: -6px;
    top: 0;
    width: 11px;
    height: 11px;
    background: var(--color-accent);
    clip-path: polygon(50% 0%, 100% 100%, 0% 100%);
}

.project-content::after {
    content: 'A';
    position: absolute;
    left: -22px;
    top: 12px;
    font-family: var(--font-mono);
    font-size: 0.55rem;
    color: var(--color-accent);
    border: 1px solid var(--color-accent);
    width: 14px;
    height: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-bg);
}

.project-description {
    color: var(--color-text-secondary);
    line-height: 1.7;
    font-size: 0.9rem;
}

.project-highlight {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    color: var(--color-accent);
    font-style: normal;
    margin-top: var(--spacing-sm);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    padding: 0.25rem 0.5rem;
    background: rgba(247, 147, 26, 0.1);
    display: inline-block;
    clip-path: polygon(4px 0, 100% 0, 100% calc(100% - 4px), calc(100% - 4px) 100%, 0 100%, 0 4px);
}

.project-details {
    list-style: none;
    padding: 0;
    margin: var(--spacing-sm) 0 0;
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
    font-family: var(--font-mono);
}

.project-details li {
    font-size: 0.75rem;
    color: var(--color-text-secondary);
    line-height: 1.5;
    text-transform: uppercase;
    letter-spacing: 0.02em;
}

.project-details strong {
    color: var(--color-text-tertiary);
    font-weight: 400;
}

/* ============ CONTACT ============ */
#contact {
    max-width: var(--max-width);
    margin: 0 auto;
    padding-left: var(--spacing-md);
    padding-right: var(--spacing-md);
    position: relative;
    padding-bottom: var(--spacing-xl);
}

.contact-links {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
    align-items: center;
    justify-content: center;
}

.contact-links a {
    color: var(--color-text);
    text-decoration: none;
    font-family: var(--font-mono);
    font-size: 0.8rem;
    transition: color 0.2s ease;
}

.contact-links a:hover {
    color: var(--color-accent);
}

.contact-divider {
    color: var(--color-border);
}

/* ============ FOOTER ============ */
footer {
    padding: var(--spacing-lg) var(--spacing-md);
    text-align: center;
    margin-top: var(--spacing-xl);
    margin-bottom: var(--spacing-lg);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-md);
}

.back-to-top {
    color: var(--color-text-tertiary);
    text-decoration: none;
    font-family: var(--font-mono);
    font-size: 0.7rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    transition: color 0.2s ease;
}

.back-to-top:hover {
    color: var(--color-accent);
}

/* ============ RESPONSIVE ============ */
@media (max-width: 900px) {
    .project-body {
        padding: 0 var(--spacing-md);
    }

    .carousel {
        padding: 0 50px;
    }

    .carousel-viewport {
        min-height: 45vh;
    }

    .carousel-slide img,
    .carousel-slide video {
        max-height: 45vh;
    }
}

@media (max-width: 640px) {
    .carousel-btn-prev {
        left: 4px;
    }

    .carousel-btn-next {
        right: 4px;
    }

    .hero {
        flex-direction: column-reverse;
        text-align: center;
        padding: var(--spacing-md);
        margin-left: auto;
    }

    .hero-content {
        text-align: center;
    }

    .hero-subtitle {
        letter-spacing: 0.2em;
    }

    .hero-image {
        width: auto;
        height: 240px;
    }

    .logo-text {
        display: none;
    }

    .logo-icon {
        width: 32px;
        height: 32px;
    }

    nav {
        gap: var(--spacing-sm);
    }

    nav a {
        font-size: 0.6rem;
        letter-spacing: 0.05em;
    }

    .carousel-viewport {
        min-height: 35vh;
    }

    .carousel-slide img,
    .carousel-slide video {
        max-height: 35vh;
    }

    .project-header {
        padding-left: var(--spacing-md);
        padding-right: var(--spacing-md);
    }

    .carousel {
        padding: 0 40px;
    }

    .carousel::before,
    .carousel::after {
        display: none;
    }

    .project-content {
        align-self: flex-start;
        margin-left: var(--spacing-md);
    }

    .project-content::after {
        display: none;
    }

    .project-number {
        display: none;
    }

    .circuit-trace {
        display: none;
    }

    .deco-icon {
        display: none;
    }

    .section-cut {
        margin-left: auto;
    }

    .section-cut-label {
        font-size: 0.55rem;
        padding: 0.2rem 0.5rem;
    }

    .scale-bar {
        margin-left: auto;
        max-width: 300px;
    }

    .section-title {
        margin-left: auto;
    }

    .drawing-border,
    .corner-mark,
    .not-to-scale,
    .gear-progress,
    .tolerance-note {
        display: none;
    }

    .title-block {
        flex-direction: column;
        max-width: 250px;
    }

    .title-block-section {
        border-right: none;
        border-bottom: 1px solid var(--color-border);
        flex-direction: row;
        justify-content: space-between;
    }

    .title-block-section:last-child {
        border-bottom: none;
    }
}

/* ============ PLACEHOLDER ============ */
.placeholder {
    background: #f0f0f0;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #999;
    font-size: 0.75rem;
    letter-spacing: 0.05em;
}

/* ============ TECHNICAL DIVIDERS ============ */

/* Section Cut Indicator */
.section-cut {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-md) var(--spacing-md);
    position: relative;
    max-width: 900px;
    margin: 0 auto;
    margin-left: 10%;
}

.section-cut-line {
    flex: 1;
    height: 1px;
    background: var(--color-border);
    position: relative;
}

.section-cut-line::before,
.section-cut-line::after {
    content: '';
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 0;
    height: 0;
    border-style: solid;
}

.section-cut-line::before {
    left: 0;
    border-width: 6px 10px 6px 0;
    border-color: transparent var(--color-accent) transparent transparent;
}

.section-cut-line::after {
    right: 0;
    border-width: 6px 0 6px 10px;
    border-color: transparent transparent transparent var(--color-accent);
}

.section-cut-label {
    font-family: var(--font-mono);
    font-size: 0.65rem;
    color: var(--color-accent);
    letter-spacing: 0.1em;
    padding: 0.25rem 0.75rem;
    border: 1px solid var(--color-accent);
    background: var(--color-bg);
    text-transform: uppercase;
    clip-path: polygon(6px 0, calc(100% - 6px) 0, 100% 6px, 100% calc(100% - 6px), calc(100% - 6px) 100%, 6px 100%, 0 calc(100% - 6px), 0 6px);
}

/* Measurement Scale Bar */
.scale-bar {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: var(--spacing-sm) var(--spacing-md);
    max-width: 500px;
    margin: 0 auto;
    margin-left: 10%;
}

.scale-bar-track {
    width: 100%;
    height: 8px;
    position: relative;
    border-left: 1px solid var(--color-text-tertiary);
    border-right: 1px solid var(--color-text-tertiary);
}

.scale-bar-track::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 0;
    right: 0;
    height: 1px;
    background: var(--color-text-tertiary);
}

.scale-bar-ticks {
    display: flex;
    justify-content: space-between;
    width: 100%;
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 100%;
}

.scale-bar-tick {
    width: 1px;
    background: var(--color-text-tertiary);
    height: 100%;
}

.scale-bar-tick.minor {
    height: 40%;
    margin-top: 30%;
}

.scale-bar-labels {
    display: flex;
    justify-content: space-between;
    width: 100%;
    margin-top: 4px;
}

.scale-bar-labels span {
    font-family: var(--font-mono);
    font-size: 0.55rem;
    color: var(--color-text-tertiary);
    letter-spacing: 0.02em;
}

.scale-bar-unit {
    font-family: var(--font-mono);
    font-size: 0.55rem;
    color: var(--color-text-tertiary);
    margin-top: 2px;
    letter-spacing: 0.05em;
}

/* Datum Line */
.datum-line {
    display: flex;
    align-items: center;
    gap: 0;
    margin: var(--spacing-md) 0;
}

.datum-symbol {
    width: 12px;
    height: 12px;
    background: var(--color-accent);
    clip-path: polygon(50% 0%, 100% 100%, 0% 100%);
    flex-shrink: 0;
}

.datum-label {
    font-family: var(--font-mono);
    font-size: 0.6rem;
    color: var(--color-accent);
    letter-spacing: 0.05em;
    padding: 0.15rem 0.4rem;
    border: 1px solid var(--color-accent);
    background: var(--color-bg);
    margin-left: -1px;
}

.datum-extension {
    flex: 1;
    height: 1px;
    background: linear-gradient(90deg, var(--color-accent) 0%, var(--color-accent) 30%, transparent 100%);
    max-width: 100px;
}

/* Circuit Trace */
.circuit-trace {
    position: absolute;
    pointer-events: none;
}

.circuit-trace svg {
    overflow: visible;
}

.circuit-trace path {
    fill: none;
    stroke: var(--color-border);
    stroke-width: 1;
}

.circuit-trace .via {
    fill: var(--color-accent);
}

.circuit-trace .via-ring {
    fill: none;
    stroke: var(--color-accent);
    stroke-width: 1;
}

/* Hero circuit decoration */
.hero-circuit {
    position: absolute;
    bottom: 0;
    right: 5%;
    width: 200px;
    height: 80px;
    opacity: 0.6;
}

/* Section circuit decoration */
.section-circuit-left {
    left: 2%;
    top: 50%;
    transform: translateY(-50%);
    width: 40px;
    height: 200px;
}

.section-circuit-right {
    right: 2%;
    top: 30%;
    width: 60px;
    height: 150px;
}

/* Contact section circuit */
.contact-circuit {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    bottom: -40px;
    width: 300px;
    height: 50px;
    opacity: 0.5;
}

/* ============ DECORATIVE ICONS ============ */
.deco-icon {
    position: absolute;
    opacity: 0.12;
    pointer-events: none;
    color: var(--color-text);
}

.deco-icon svg {
    width: 100%;
    height: 100%;
    stroke: currentColor;
    fill: none;
    stroke-width: 1;
}

.deco-icon.filled svg {
    fill: currentColor;
    stroke: none;
}

.deco-geodesic {
    width: 120px;
    height: 120px;
    top: 15%;
    right: 8%;
}

.deco-bitcoin {
    width: 60px;
    height: 60px;
    top: 40%;
    left: 3%;
}

.deco-glasses {
    width: 80px;
    height: 40px;
    bottom: 25%;
    right: 5%;
}

.deco-iphone {
    width: 35px;
    height: 70px;
    top: 60%;
    left: 6%;
}

.deco-iphone-2 {
    width: 30px;
    height: 60px;
    bottom: 15%;
    right: 12%;
    transform: rotate(-15deg);
}

.deco-dome-2 {
    width: 80px;
    height: 80px;
    bottom: 30%;
    left: 2%;
    opacity: 0.08;
}

/* Dimension Line */
.dimension-line {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-sm) var(--spacing-md);
    max-width: 600px;
    margin: 0 auto;
}

.dimension-line-segment {
    flex: 1;
    height: 1px;
    background: var(--color-text-tertiary);
    position: relative;
}

.dimension-line-segment::before {
    content: '';
    position: absolute;
    top: -4px;
    width: 1px;
    height: 9px;
    background: var(--color-text-tertiary);
}

.dimension-line-segment:first-child::before {
    left: 0;
}

.dimension-line-segment:last-child::before {
    right: 0;
    left: auto;
}

.dimension-line-segment::after {
    content: '';
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 0;
    height: 0;
    border-style: solid;
}

.dimension-line-segment:first-child::after {
    left: 0;
    border-width: 4px 6px 4px 0;
    border-color: transparent var(--color-text-tertiary) transparent transparent;
}

.dimension-line-segment:last-child::after {
    right: 0;
    border-width: 4px 0 4px 6px;
    border-color: transparent transparent transparent var(--color-text-tertiary);
}

.dimension-value {
    font-family: var(--font-mono);
    font-size: 0.6rem;
    color: var(--color-text-tertiary);
    letter-spacing: 0.05em;
    padding: 0 var(--spacing-sm);
    white-space: nowrap;
}

/* ============ FINISHING TOUCHES ============ */

/* Selection Color */
::selection {
    background: rgba(247, 147, 26, 0.3);
    color: var(--color-text);
}

::-moz-selection {
    background: rgba(247, 147, 26, 0.3);
    color: var(--color-text);
}

/* Custom Cursor */
a, button, .project-header, [data-carousel] {
    cursor: crosshair;
}

/* Drawing Border */
.drawing-border {
    position: fixed;
    top: 10px;
    left: 10px;
    right: 10px;
    bottom: 10px;
    border: 1px solid var(--color-border);
    pointer-events: none;
    z-index: 9999;
}

.drawing-border::before,
.drawing-border::after {
    content: '';
    position: absolute;
    width: 20px;
    height: 20px;
}

.drawing-border::before {
    top: -1px;
    left: -1px;
    border-top: 1px solid var(--color-accent);
    border-left: 1px solid var(--color-accent);
}

.drawing-border::after {
    bottom: -1px;
    right: -1px;
    border-bottom: 1px solid var(--color-accent);
    border-right: 1px solid var(--color-accent);
}

/* Corner Registration Marks */
.corner-mark {
    position: fixed;
    width: 15px;
    height: 15px;
    pointer-events: none;
    z-index: 10000;
}

.corner-mark svg {
    width: 100%;
    height: 100%;
    stroke: var(--color-accent);
    stroke-width: 1;
    fill: none;
}

.corner-mark.top-left { top: 15px; left: 15px; }
.corner-mark.top-right { top: 15px; right: 15px; }
.corner-mark.bottom-left { bottom: 15px; left: 15px; }
.corner-mark.bottom-right { bottom: 15px; right: 15px; }

/* Title Block */
.title-block {
    display: flex;
    border: 1px solid var(--color-border);
    font-family: var(--font-mono);
    font-size: 0.6rem;
    max-width: 500px;
    margin: 0 auto;
    background: var(--color-bg);
}

.title-block-section {
    padding: var(--spacing-xs) var(--spacing-sm);
    border-right: 1px solid var(--color-border);
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.title-block-section:last-child {
    border-right: none;
}

.title-block-label {
    color: var(--color-text-tertiary);
    font-size: 0.5rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.title-block-value {
    color: var(--color-text);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* NOT TO SCALE Label */
.not-to-scale {
    position: fixed;
    bottom: 20px;
    left: 20px;
    font-family: var(--font-mono);
    font-size: 0.55rem;
    color: var(--color-text-tertiary);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    transform: rotate(-90deg);
    transform-origin: left bottom;
    opacity: 0.5;
    z-index: 10000;
    pointer-events: none;
}

/* Tolerance Annotations */
.tolerance-note {
    position: absolute;
    font-family: var(--font-mono);
    font-size: 0.5rem;
    color: var(--color-text-tertiary);
    white-space: nowrap;
}

.hero .tolerance-note {
    bottom: 10px;
    right: 10px;
}

/* Pulsing Status Indicators */
@keyframes pulse-glow {
    0%, 100% {
        box-shadow: 0 0 8px currentColor;
        opacity: 1;
    }
    50% {
        box-shadow: 0 0 15px currentColor, 0 0 25px currentColor;
        opacity: 0.8;
    }
}

.status-indicator.shipped {
    background: var(--color-status-shipped);
    color: var(--color-status-shipped);
    animation: pulse-glow 2s ease-in-out infinite;
}

.status-indicator.production {
    background: var(--color-status-production);
    color: var(--color-status-production);
    animation: pulse-glow 1.5s ease-in-out infinite;
}

/* Pulsing Circuit Vias */
@keyframes via-pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.4;
    }
}

.circuit-trace .via {
    animation: via-pulse 3s ease-in-out infinite;
}

.circuit-trace .via:nth-child(2) { animation-delay: 0.5s; }
.circuit-trace .via:nth-child(4) { animation-delay: 1s; }
.circuit-trace .via:nth-child(6) { animation-delay: 1.5s; }

/* Ratchet Wrench Scroll Progress */
.gear-progress {
    position: fixed;
    top: 80px;
    right: 25px;
    width: 40px;
    height: 160px;
    z-index: 10000;
    pointer-events: none;
}

.wrench-svg {
    width: 100%;
    height: 100%;
    overflow: visible;
}

.wrench-outline {
    fill: none;
    stroke: var(--color-border);
    stroke-width: 1.5;
}

.wrench-fill {
    fill: var(--color-accent);
    opacity: 0.2;
    clip-path: inset(100% 0 0 0);
    transition: clip-path 0.1s ease-out;
}

.wrench-head-outline {
    fill: none;
    stroke: var(--color-border);
    stroke-width: 1.5;
}

.wrench-head-fill {
    fill: var(--color-accent);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.wrench-head-fill.active {
    opacity: 0.3;
}

.gear-inner {
    fill: none;
    stroke: var(--color-accent);
    stroke-width: 1;
    transform-origin: 20px 24px;
    transition: transform 0.05s linear;
}

.gear-center {
    fill: var(--color-accent);
}

/* Section Numbers */
.section-number {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    color: var(--color-accent);
    margin-right: 0.5rem;
    opacity: 0.7;
}

/* ============ EDUCATION SECTION ============ */
#education {
    max-width: 600px;
    margin: 0 auto;
    padding-left: var(--spacing-md);
    padding-right: var(--spacing-md);
}

.education-crests {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--spacing-xl);
    flex-wrap: wrap;
}

.crest-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-sm);
}

.crest-placeholder {
    width: 120px;
    height: 120px;
    border: 1px dashed var(--color-border);
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-mono);
    font-size: 0.7rem;
    color: var(--color-text-tertiary);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    clip-path: polygon(
        var(--chamfer) 0,
        calc(100% - var(--chamfer)) 0,
        100% var(--chamfer),
        100% calc(100% - var(--chamfer)),
        calc(100% - var(--chamfer)) 100%,
        var(--chamfer) 100%,
        0 calc(100% - var(--chamfer)),
        0 var(--chamfer)
    );
}

.crest-item img {
    width: 120px;
    height: 120px;
    object-fit: contain;
    filter: grayscale(100%);
    opacity: 0.8;
    transition: filter 0.3s ease, opacity 0.3s ease;
    clip-path: polygon(
        var(--chamfer) 0,
        calc(100% - var(--chamfer)) 0,
        100% var(--chamfer),
        100% calc(100% - var(--chamfer)),
        calc(100% - var(--chamfer)) 100%,
        var(--chamfer) 100%,
        0 calc(100% - var(--chamfer)),
        0 var(--chamfer)
    );
}

.crest-item img:hover {
    filter: grayscale(0%);
    opacity: 1;
}

.crest-label {
    font-family: var(--font-mono);
    font-size: 0.65rem;
    color: var(--color-text-tertiary);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    text-align: center;
}