:root {
    --color-primary: #154a78;
    --color-primary-dark: #0d3556;
    --color-secondary: #b8a182;
    --color-secondary-dark: #8f7b61;
    --color-ink: #18222d;
    --color-muted: #556271;
    --color-surface: #f4f1eb;
    --color-surface-strong: #e8e0d4;
    --color-white: #ffffff;
    --color-border: rgba(24, 34, 45, 0.12);
    --color-shadow: rgba(14, 30, 45, 0.12);
    --font-primary: 'IBM Plex Sans', sans-serif;
    --font-secondary: 'Bitter', serif;
    --max-width: 1180px;
    --section-padding: 88px 0;
    --transition: 0.25s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    font-size: 16px;
    line-height: 1.7;
    color: var(--color-muted);
    background: var(--color-white);
    -webkit-font-smoothing: antialiased;
}

img {
    display: block;
    max-width: 100%;
    height: auto;
}

a {
    color: var(--color-primary);
    text-decoration: none;
    transition: color var(--transition), opacity var(--transition);
}

a:hover {
    color: var(--color-primary-dark);
}

h1,
h2,
h3,
h4,
h5,
h6 {
    margin-bottom: 1rem;
    color: var(--color-ink);
    font-family: var(--font-secondary);
    line-height: 1.25;
}

h1 {
    font-size: 3.4rem;
}

h2 {
    font-size: 2.3rem;
}

h3 {
    font-size: 1.6rem;
}

h4 {
    font-size: 1.2rem;
}

p,
ul,
ol {
    margin-bottom: 1rem;
}

ul {
    padding-left: 1.1rem;
}

.container {
    width: min(100% - 40px, var(--max-width));
    margin: 0 auto;
}

.section {
    padding: var(--section-padding);
}

.section-light {
    background: var(--color-surface);
}

.section-dark {
    position: relative;
    background:
        linear-gradient(135deg, rgba(13, 53, 86, 0.96), rgba(13, 53, 86, 0.88)),
        linear-gradient(160deg, rgba(184, 161, 130, 0.2), transparent 60%);
    color: rgba(255, 255, 255, 0.86);
}

.section-dark h2,
.section-dark h3,
.section-dark h4,
.section-dark strong {
    color: var(--color-white);
}

.eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 1.1rem;
    font-size: 0.84rem;
    font-weight: 700;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--color-secondary-dark);
}

.eyebrow::before {
    content: "";
    width: 38px;
    height: 1px;
    background: currentColor;
}

.section-dark .eyebrow {
    color: rgba(255, 255, 255, 0.72);
}

.section-header {
    max-width: 760px;
    margin-bottom: 3rem;
}

.section-header p:last-child,
.section p:last-child {
    margin-bottom: 0;
}

.btn-row {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 48px;
    padding: 0 24px;
    border: 1px solid transparent;
    border-radius: 999px;
    font-weight: 600;
    font-size: 0.97rem;
    transition: transform var(--transition), background var(--transition), border-color var(--transition), color var(--transition), box-shadow var(--transition);
}

.btn:hover {
    transform: translateY(-1px);
}

.btn-primary {
    color: var(--color-white);
    background: var(--color-primary);
    box-shadow: 0 12px 30px rgba(21, 74, 120, 0.22);
}

.btn-primary:hover {
    color: var(--color-white);
    background: var(--color-primary-dark);
}

.btn-secondary {
    color: var(--color-ink);
    background: var(--color-secondary);
}

.btn-secondary:hover {
    color: var(--color-ink);
    background: var(--color-secondary-dark);
}

.btn-outline {
    color: var(--color-ink);
    border-color: var(--color-border);
    background: rgba(255, 255, 255, 0.75);
}

.btn-outline:hover {
    color: var(--color-primary-dark);
    border-color: rgba(21, 74, 120, 0.35);
}

.header {
    position: fixed;
    inset: 0 0 auto 0;
    z-index: 1000;
    background: transparent;
    transition: background var(--transition), box-shadow var(--transition), backdrop-filter var(--transition);
}

.header.scrolled {
    background: rgba(255, 255, 255, 0.94);
    box-shadow: 0 10px 30px rgba(14, 30, 45, 0.08);
    backdrop-filter: blur(12px);
}

.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    min-height: 88px;
}

.nav-brand {
    display: inline-flex;
    align-items: center;
}

.nav-brand img {
    height: 60px;
    width: auto;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 26px;
    list-style: none;
    padding-left: 0;
    margin-bottom: 0;
}

.nav-link {
    position: relative;
    color: rgba(255, 255, 255, 0.92);
    font-size: 0.95rem;
    font-weight: 600;
}

.header.scrolled .nav-link {
    color: var(--color-ink);
}

.nav-link::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: -6px;
    width: 100%;
    height: 2px;
    transform: scaleX(0);
    transform-origin: left;
    background: var(--color-secondary);
    transition: transform var(--transition);
}

.nav-link:hover::after,
.nav-link.active::after {
    transform: scaleX(1);
}

.nav-link.active {
    color: var(--color-secondary);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: 6px;
    border: 0;
    background: transparent;
    cursor: pointer;
}

.nav-toggle span {
    width: 24px;
    height: 2px;
    background: var(--color-white);
    transition: background var(--transition);
}

.header.scrolled .nav-toggle span {
    background: var(--color-ink);
}

.hero {
    position: relative;
    overflow: hidden;
    min-height: 100vh;
    padding: 160px 0 110px;
    background:
        radial-gradient(circle at top right, rgba(184, 161, 130, 0.32), transparent 28%),
        linear-gradient(135deg, rgba(13, 53, 86, 0.92), rgba(24, 34, 45, 0.95));
    color: rgba(255, 255, 255, 0.86);
}

.hero-photo {
    background:
        linear-gradient(135deg, rgba(13, 53, 86, 0.82), rgba(24, 34, 45, 0.9)),
        radial-gradient(circle at top right, rgba(184, 161, 130, 0.18), transparent 32%),
        url("../img/hero-3d-printing-workshop.jpg");
    background-position: center;
    background-repeat: no-repeat;
    background-size: cover;
}

.hero::before,
.hero::after {
    content: "";
    position: absolute;
    pointer-events: none;
}

.hero::before {
    inset: auto -8% 12% auto;
    width: 420px;
    height: 420px;
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 50%;
}

.hero::after {
    inset: 110px auto auto -120px;
    width: 360px;
    height: 360px;
    border: 1px solid rgba(184, 161, 130, 0.22);
    border-radius: 50%;
}

.hero-grid {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: minmax(0, 1.2fr) minmax(300px, 0.8fr);
    gap: 48px;
    align-items: center;
}

.hero-copy h1,
.hero-copy h2 {
    color: var(--color-white);
}

.hero-copy p {
    max-width: 680px;
    font-size: 1.08rem;
}

.hero-panel {
    padding: 30px;
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: 24px;
    background: rgba(255, 255, 255, 0.08);
    box-shadow: 0 24px 60px rgba(0, 0, 0, 0.16);
    backdrop-filter: blur(10px);
}

.hero-panel img {
    height: 74px;
    width: auto;
    margin-bottom: 24px;
}

.hero-panel ul {
    list-style: none;
    padding-left: 0;
    margin-bottom: 0;
}

.hero-panel li {
    padding: 14px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.12);
}

.hero-panel li:last-child {
    border-bottom: 0;
    padding-bottom: 0;
}

.stats-grid,
.cards-grid,
.process-grid,
.values-grid,
.contact-grid,
.checklist-grid,
.visual-grid {
    display: grid;
    gap: 24px;
}

.stats-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.cards-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.process-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
}

.values-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.contact-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.checklist-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.visual-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.stat-card,
.card,
.process-card,
.value-card,
.contact-card,
.checklist-card,
.privacy-card,
.signal-box {
    border: 1px solid var(--color-border);
    border-radius: 24px;
    background: var(--color-white);
    box-shadow: 0 14px 40px var(--color-shadow);
}

.stat-card,
.card,
.value-card,
.contact-card,
.checklist-card,
.signal-box {
    padding: 28px;
}

.process-card {
    padding: 28px 24px;
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(255, 255, 255, 0.12);
    box-shadow: none;
}

.visual-card {
    overflow: hidden;
}

.visual-card img {
    width: 100%;
    aspect-ratio: 4 / 3;
    object-fit: cover;
}

.visual-card figcaption {
    padding: 20px 22px 22px;
}

.visual-card strong {
    display: block;
    margin-bottom: 0.55rem;
    color: var(--color-ink);
}

.visual-card p {
    margin-bottom: 0;
}

.process-card .step {
    display: inline-flex;
    width: 38px;
    height: 38px;
    margin-bottom: 18px;
    border-radius: 50%;
    align-items: center;
    justify-content: center;
    background: rgba(184, 161, 130, 0.24);
    color: var(--color-white);
    font-weight: 700;
}

.stat-card strong,
.signal-box strong {
    display: block;
    margin-bottom: 0.55rem;
    color: var(--color-ink);
}

.card h3,
.value-card h3,
.contact-card h3,
.checklist-card h3,
.privacy-card h2,
.signal-box h3 {
    margin-bottom: 0.8rem;
}

.icon-chip {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    margin-bottom: 18px;
    border-radius: 14px;
    background: linear-gradient(135deg, rgba(21, 74, 120, 0.14), rgba(184, 161, 130, 0.16));
    color: var(--color-primary);
    font-weight: 700;
}

.split-layout {
    display: grid;
    grid-template-columns: minmax(0, 1.1fr) minmax(280px, 0.9fr);
    gap: 36px;
    align-items: start;
}

.surface-panel {
    padding: 32px;
    border-radius: 28px;
    background: linear-gradient(180deg, rgba(244, 241, 235, 0.92), rgba(232, 224, 212, 0.72));
    border: 1px solid rgba(184, 161, 130, 0.22);
}

.surface-panel h3:last-of-type,
.surface-panel p:last-child,
.surface-panel ul:last-child {
    margin-bottom: 0;
}

.quote-block {
    position: relative;
    padding: 34px;
    border-radius: 28px;
    background: var(--color-primary-dark);
    color: rgba(255, 255, 255, 0.85);
    overflow: hidden;
}

.quote-block::before {
    content: "";
    position: absolute;
    inset: -30% auto auto 70%;
    width: 220px;
    height: 220px;
    border-radius: 50%;
    background: rgba(184, 161, 130, 0.18);
}

.quote-block p,
.quote-block strong {
    position: relative;
    z-index: 1;
}

.quote-block strong {
    display: block;
    margin-bottom: 0.8rem;
    color: var(--color-white);
}

.list-clean {
    list-style: none;
    padding-left: 0;
}

.list-clean li {
    position: relative;
    padding-left: 24px;
}

.list-clean li + li {
    margin-top: 12px;
}

.list-clean li::before {
    content: "";
    position: absolute;
    left: 0;
    top: 0.7em;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--color-secondary);
    transform: translateY(-50%);
}

.page-hero {
    padding: 150px 0 70px;
    background:
        radial-gradient(circle at top right, rgba(184, 161, 130, 0.26), transparent 26%),
        linear-gradient(180deg, rgba(244, 241, 235, 0.84), rgba(255, 255, 255, 1));
}

.page-hero .lead {
    max-width: 760px;
    font-size: 1.08rem;
}

.privacy-section {
    padding-top: 140px;
}

.privacy-card {
    max-width: 900px;
    margin: 0 auto;
    padding: 36px;
}

.privacy-card h1 {
    margin-bottom: 2rem;
}

.privacy-card h2 {
    margin-top: 2rem;
}

.privacy-card p,
.privacy-card li {
    color: var(--color-muted);
}

.privacy-card ul {
    padding-left: 1.2rem;
}

.info-box {
    padding: 22px 24px;
    margin-bottom: 1.5rem;
    border-left: 4px solid var(--color-primary);
    border-radius: 18px;
    background: var(--color-surface);
}

.cta-band {
    padding: 42px;
    border-radius: 28px;
    background: linear-gradient(135deg, rgba(21, 74, 120, 0.94), rgba(13, 53, 86, 0.98));
    color: rgba(255, 255, 255, 0.86);
}

.cta-band h2,
.cta-band p {
    color: var(--color-white);
}

.footer {
    padding: 34px 0 42px;
    background: var(--color-ink);
    color: rgba(255, 255, 255, 0.7);
}

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

.footer-links {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    list-style: none;
    padding-left: 0;
    margin-bottom: 1rem;
}

.footer-meta p {
    margin-bottom: 0.35rem;
}

@media (max-width: 1024px) {
    h1 {
        font-size: 2.9rem;
    }

    h2 {
        font-size: 2rem;
    }

    .hero-grid,
    .split-layout {
        grid-template-columns: 1fr;
    }

    .cards-grid,
    .contact-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .process-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 768px) {
    :root {
        --section-padding: 68px 0;
    }

    h1 {
        font-size: 2.3rem;
    }

    h2 {
        font-size: 1.8rem;
    }

    .nav {
        min-height: 78px;
    }

    .nav-brand img {
        height: 52px;
    }

    .nav-toggle {
        display: flex;
    }

    .nav-links {
        display: none;
        position: absolute;
        top: 78px;
        left: 20px;
        right: 20px;
        flex-direction: column;
        align-items: flex-start;
        gap: 0;
        padding: 18px 20px;
        border: 1px solid var(--color-border);
        border-radius: 20px;
        background: rgba(255, 255, 255, 0.98);
        box-shadow: 0 18px 40px rgba(14, 30, 45, 0.14);
    }

    .nav-links.open {
        display: flex;
    }

    .nav-link {
        width: 100%;
        padding: 10px 0;
        color: var(--color-ink);
    }

    .stats-grid,
    .cards-grid,
    .values-grid,
    .contact-grid,
    .checklist-grid,
    .process-grid,
    .visual-grid {
        grid-template-columns: 1fr;
    }

    .hero {
        min-height: auto;
        padding: 140px 0 80px;
    }

    .hero-panel,
    .cta-band,
    .privacy-card,
    .surface-panel,
    .quote-block {
        padding: 26px;
    }
}

@media (max-width: 480px) {
    .container {
        width: min(100% - 28px, var(--max-width));
    }

    .btn-row {
        flex-direction: column;
        align-items: stretch;
    }

    .btn {
        width: 100%;
    }
}