:root {
    --transition-speed: 0.35s;
    --container: 1040px;
}

[data-theme="automation"] {
    --bg-primary: #0E1E15;
    --bg-secondary: #14261C;
    --bg-card: #1A3325;
    --text-primary: #f5f5f5;
    --text-secondary: #d1c3b1;
    --text-tertiary: #9f8f7c;
    --accent-primary: #E7A66C;
    --accent-secondary: #EDBC90;
    --headline: #f8f4ef;
    --border: rgba(255, 255, 255, 0.12);
    --border-soft: rgba(255, 255, 255, 0.06);
    --nav-bg: #0E1E15;
}

[data-theme="web"] {
    --bg-primary: #282315;
    --bg-secondary: #362F1C;
    --bg-card: #443B24;
    --text-primary: #f5f4f0;
    --text-secondary: #cbbf9e;
    --text-tertiary: #9b8f6e;
    --accent-primary: #E3C578;
    --accent-secondary: #EAD399;
    --headline: #f6f2e6;
    --border: rgba(255, 255, 255, 0.12);
    --border-soft: rgba(255, 255, 255, 0.06);
    --nav-bg: #282315;
}

[data-theme="data"] {
    --bg-primary: #0E1B19;
    --bg-secondary: #122422;
    --bg-card: #172D2A;
    --text-primary: #f1f5f4;
    --text-secondary: #b7c9c4;
    --text-tertiary: #7d948f;
    --accent-primary: #4F998E;
    --accent-secondary: #7BB2AA;
    --headline: #eef7f5;
    --border: rgba(255, 255, 255, 0.12);
    --border-soft: rgba(255, 255, 255, 0.06);
    --nav-bg: #0E1B19;
}

[data-theme="electronics"] {
    --bg-primary: #261510;
    --bg-secondary: #331C15;
    --bg-card: #40231A;
    --text-primary: #f6f1ee;
    --text-secondary: #d3b9af;
    --text-tertiary: #a48377;
    --accent-primary: #D77659;
    --accent-secondary: #E19882;
    --headline: #fbf1ed;
    --border: rgba(255, 255, 255, 0.12);
    --border-soft: rgba(255, 255, 255, 0.06);
    --nav-bg: #261510;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: "DM Sans", -apple-system, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.72;
    min-height: 100vh;
    transition: background var(--transition-speed) ease, color var(--transition-speed) ease;
}

h1, h2, h3, h4 {
    font-family: "Fraunces", Georgia, serif;
    font-weight: 500;
    letter-spacing: -0.02em;
    color: var(--headline);
}

a {
    color: inherit;
    text-decoration: none;
}

.site-nav {
    position: sticky;
    top: 0;
    z-index: 100;
    background: var(--nav-bg);
    border-bottom: 1px solid var(--border-soft);
}

.nav-container {
    max-width: var(--container);
    margin: 0 auto;
    padding: 0.95rem 1.2rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1.2rem;
}

.logo {
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
    padding: 0.05rem 0;
    transition: opacity var(--transition-speed) ease;
}

.logo:hover {
    opacity: 0.88;
}

.logo-mark {
    height: 32px;
    width: auto;
}

.logo-text {
    width: 124px;
    height: auto;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 1.05rem;
    flex-wrap: wrap;
}

.nav-links a {
    color: var(--text-secondary);
    font-size: 0.92rem;
    letter-spacing: 0.01em;
    padding-bottom: 0.2rem;
    border-bottom: 1px solid transparent;
    transition: color var(--transition-speed) ease, border-color var(--transition-speed) ease;
}

.nav-links a:hover,
.nav-links a.current {
    color: var(--text-primary);
    border-color: var(--accent-primary);
}

.main-shell {
    max-width: var(--container);
    margin: 0 auto;
    padding: 4rem 1.2rem 5rem;
}

.hero {
    padding: 0 0 1.8rem;
    border-bottom: 1px solid var(--border);
    position: relative;
}

.eyebrow {
    display: inline-block;
    font-size: 0.74rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.14em;
    color: var(--accent-secondary);
    margin-bottom: 1.05rem;
}

.hero h1 {
    font-size: clamp(2.2rem, 4.8vw, 4rem);
    line-height: 1.03;
    margin-bottom: 1rem;
    max-width: 14ch;
}

.hero p {
    max-width: 70ch;
    color: var(--text-secondary);
    font-size: 1.06rem;
    text-wrap: pretty;
}

.hero-meta {
    margin-top: 1.35rem;
    color: var(--text-tertiary);
    font-size: 0.9rem;
}

.hero::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: -1px;
    width: 72px;
    height: 1px;
    background: var(--accent-primary);
}

.grid {
    margin-top: 1.7rem;
    display: grid;
    grid-template-columns: repeat(12, minmax(0, 1fr));
    column-gap: 2rem;
    row-gap: 0;
}

.card {
    grid-column: span 12;
    border-top: 1px solid var(--border-soft);
    padding: 2rem 0 1.9rem;
    background: transparent;
}

.card h2 {
    font-size: 1.48rem;
    margin-bottom: 0.65rem;
    line-height: 1.2;
}

.card h3 {
    font-size: 1.08rem;
    margin-bottom: 0.4rem;
    line-height: 1.3;
}

.card p,
.card li {
    color: var(--text-secondary);
    font-size: 1rem;
}

.card p + p {
    margin-top: 0.75rem;
}

.card ul {
    list-style: none;
    margin-top: 0.65rem;
}

.card li {
    position: relative;
    padding-left: 1.05rem;
    margin-bottom: 0.55rem;
}

.card li::before {
    content: "";
    width: 5px;
    height: 5px;
    border-radius: 50%;
    background: var(--accent-primary);
    position: absolute;
    left: 0;
    top: 0.69rem;
}

.span-6 {
    grid-column: span 6;
}

.span-4 {
    grid-column: span 4;
}

.span-12 {
    grid-column: span 12;
}

.data-table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
    margin-top: 1rem;
}

.data-table th,
.data-table td {
    border-bottom: 1px solid var(--border-soft);
    padding: 0.78rem 0.2rem;
    text-align: left;
    vertical-align: top;
}

.data-table th {
    color: var(--accent-secondary);
    font-weight: 500;
    font-size: 0.92rem;
    letter-spacing: 0.04em;
    text-transform: uppercase;
}

.data-table td {
    color: var(--text-secondary);
}

.pill {
    display: inline-block;
    padding: 0.25rem 0.52rem;
    border-radius: 999px;
    background: transparent;
    border: 1px solid var(--border);
    color: var(--text-secondary);
    font-size: 0.76rem;
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

.cta {
    margin-top: 1.15rem;
    display: inline-block;
    color: var(--text-primary);
    padding: 0.5rem 0;
    border-bottom: 1px solid var(--accent-primary);
    font-weight: 600;
    letter-spacing: 0.01em;
    transition: color var(--transition-speed) ease, border-color var(--transition-speed) ease;
}

.cta:hover {
    color: var(--accent-secondary);
    border-color: var(--accent-secondary);
}

.site-footer {
    border-top: 1px solid var(--border-soft);
    margin-top: 3rem;
}

.footer-container {
    max-width: var(--container);
    margin: 0 auto;
    padding: 1.6rem 1.2rem 2.6rem;
    color: var(--text-tertiary);
    display: flex;
    justify-content: space-between;
    gap: 1.3rem;
    flex-wrap: wrap;
}

.footer-links {
    display: flex;
    gap: 0.95rem;
    flex-wrap: wrap;
}

.footer-links a:hover {
    color: var(--text-secondary);
}

@media (max-width: 960px) {
    .span-6,
    .span-4 {
        grid-column: span 12;
    }

    .hero h1 {
        max-width: 18ch;
    }

    .grid {
        column-gap: 1.25rem;
    }
}

@media (max-width: 700px) {
    .nav-container {
        align-items: flex-start;
        flex-direction: column;
    }

    .main-shell {
        padding-top: 3.2rem;
    }
}