:root {
    --ink: #142f43;
    --sky: #bce4f8;
    --pale: #eaf5fb;
    --line: #c3d7e3;
    --white: #fbfdff;
    --silver: #aab0b8;
    --muted: #4e6575;
    --sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --serif: 'Georgia', 'Times New Roman', serif;
    --mono: 'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, monospace;
}

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

body {
    background-color: var(--white);
    color: var(--ink);
    font-family: var(--sans);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; transition: all 0.3s ease; }
a:hover { color: #197aa6; }
a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible, select:focus-visible { outline: 3px solid #197aa6; outline-offset: 3px; }

/* Architectural Elements */
.arch-label {
    font-size: 10px;
    text-transform: uppercase;
    letter-spacing: 0.2em;
    color: var(--muted);
    font-weight: 600;
    display: block;
    margin-bottom: 8px;
}

.tech-spec {
    font-family: var(--mono);
    font-size: 10px;
    text-transform: uppercase;
    color: var(--silver);
    letter-spacing: 0.1em;
}

/* Layout */
header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: rgba(251, 253, 255, 0.9);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--line);
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 4%;
    min-height: 80px;
}

.brand {
    display: flex;
    align-items: center;
    gap: 12px;
    font-family: var(--serif);
    font-weight: bold;
    font-size: 1.5rem;
    letter-spacing: -0.02em;
}

.brand img {
    width: 50px;
    height: 50px;
    object-fit: cover;
}

nav {
    display: flex;
    gap: 2.5rem;
    align-items: center;
}

nav a {
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    font-weight: 500;
}

nav a[aria-current="page"] { color: #197aa6; }

.nav-cta {
    border: 1px solid var(--ink);
    padding: 8px 16px;
}

.nav-cta:hover {
    background: var(--ink);
    color: var(--white);
}

/* Hero Section */
.hero {
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    position: relative;
    padding: 0 10%;
    overflow: hidden;
}

.hero-bg-watermark {
    position: absolute;
    font-family: var(--serif);
    font-size: 30vw;
    color: var(--pale);
    z-index: -1;
    opacity: 0.5;
    pointer-events: none;
    user-select: none;
}

.hero-content h1 {
    font-family: var(--serif);
    font-size: clamp(3rem, 8vw, 6rem);
    line-height: 1.1;
    margin-bottom: 1.5rem;
    font-weight: 400;
}

.hero-content p {
    font-size: clamp(1rem, 2vw, 1.2rem);
    letter-spacing: 0.2em;
    text-transform: uppercase;
    margin-bottom: 3rem;
    color: var(--muted);
}

.btn-primary {
    background: var(--ink);
    color: var(--white);
    padding: 1.2rem 2.5rem;
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.2em;
    font-weight: 600;
    display: inline-block;
    transition: transform 0.3s ease, background 0.3s ease;
}

.btn-primary:hover {
    background: #197aa6;
    color: var(--white);
    transform: translateY(-3px);
}

.form-status { margin-top: 1rem; font-size: .8rem; color: var(--muted); }
.form-status[data-state="success"] { color: #14704b; }

/* Technical Section */
.section {
    padding: 8rem 4%;
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    margin-bottom: 4rem;
    border-bottom: 1px solid var(--line);
    padding-bottom: 1rem;
}

.section-header h2 {
    font-family: var(--serif);
    font-size: 2.5rem;
    text-transform: uppercase;
    font-weight: 400;
}

/* Technical Grid */
.tech-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 2rem;
}

.tech-card {
    border: 1px solid var(--line);
    padding: 2rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
    transition: all 0.3s ease;
}

.tech-card:hover {
    border-color: var(--ink);
    background: var(--pale);
}

.tech-card h3 {
    font-family: var(--serif);
    font-size: 1.2rem;
    text-transform: uppercase;
}

.tech-card p {
    font-size: 0.9rem;
    color: var(--muted);
}

/* Product Grid */
.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(400px, 1fr));
    gap: 4rem 2rem;
}

.product-card {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.product-visual {
    background: var(--pale);
    aspect-ratio: 4/5;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--line);
    transition: border 0.3s ease;
}

.product-card:hover .product-visual {
    border-color: var(--ink);
}

.product-visual img {
    max-width: 70%;
    max-height: 70%;
    opacity: 0.8;
}

.product-info {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
}

.product-info h3 {
    font-family: var(--serif);
    font-size: 1.25rem;
    text-transform: uppercase;
}

.product-info .detail {
    font-size: 10px;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--muted);
}

/* Manufacturing Stats */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
    text-align: center;
    margin-bottom: 6rem;
}

.stat-item {
    padding: 2rem;
    border-left: 1px solid var(--line);
}

.stat-value {
    font-family: var(--serif);
    font-size: 3rem;
    display: block;
    font-weight: 400;
}

.stat-label {
    font-size: 10px;
    text-transform: uppercase;
    letter-spacing: 0.2em;
    color: var(--muted);
}

/* Footer */
footer {
    background: var(--ink);
    color: var(--white);
    padding: 4rem 4%;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 3rem;
    border-top: 4px solid var(--sky);
}

.footer-col h4 {
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.2em;
    margin-bottom: 1.5rem;
    color: var(--sky);
}

.footer-col a {
    display: block;
    font-size: 13px;
    margin-bottom: 0.8rem;
    opacity: 0.7;
}

.footer-col a:hover {
    opacity: 1;
    color: var(--sky);
}

@media (max-width: 768px) {
    header { align-items: flex-start; gap: 1rem; padding: .85rem 5%; }
    .brand { font-size: 1rem; gap: 8px; }
    .brand img { width: 38px; height: 38px; }
    nav { display: flex; flex: 1; flex-wrap: wrap; justify-content: flex-end; gap: .65rem 1rem; padding-top: .35rem; }
    nav a { font-size: 9px; letter-spacing: .09em; }
    .nav-cta { padding: 5px 8px; }
    .product-grid { grid-template-columns: 1fr; }
    .stats-grid { grid-template-columns: 1fr 1fr; }
    .section { padding: 4rem 5%; }
    .section-header { margin-bottom: 2rem; align-items: flex-start; gap: 1rem; flex-direction: column; }
}