:root {
    --calkora-bg: #f5f5f1;
    --calkora-surface: #ffffff;
    --calkora-subtle: #eef4ef;
    --calkora-border: rgba(14, 38, 27, 0.08);
    --calkora-primary: #1b5d3b;
    --calkora-primary-strong: #144a2f;
    --calkora-secondary: #d9f1db;
    --calkora-accent: #f2b64e;
    --calkora-text: #1d2a20;
    --calkora-muted: #5f6d63;
    --calkora-shadow: 0 18px 40px rgba(17, 41, 29, 0.08);
    --radius-xl: 28px;
    --radius-lg: 20px;
    --radius-md: 14px;
    --container: 1200px;
}

body {
    background: var(--calkora-bg);
    color: var(--calkora-text);
    font-family: 'Manrope', Arial, sans-serif;
    line-height: 1.6;
}

img { max-width: 100%; display: block; }
a { text-decoration: none; }

.container { max-width: var(--container); }

.topbar {
    background: #0f1d15;
    color: rgba(255,255,255,0.8);
    font-size: 0.8rem;
    padding: 0.4rem 0;
}

.topbar-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
}

.topbar-left, .topbar-right {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.topbar a {
    color: rgba(255,255,255,0.8);
}

.topbar-badge {
    background: rgba(255,255,255,0.08);
    border: 1px solid rgba(255,255,255,0.08);
    padding: 0.3rem 0.7rem;
    border-radius: 999px;
}

.site-nav {
    background: rgba(255,255,255,0.96);
    border-bottom: 1px solid rgba(19,38,28,0.08);
    backdrop-filter: blur(8px);
}

.brand-mark {
    font-weight: 800;
    font-size: 2rem;
    letter-spacing: -0.08em;
    color: var(--calkora-primary);
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.brand-icon {
    width: 2.1rem;
    height: 2.1rem;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--calkora-primary), #2d7a4e);
    color: #fff;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    box-shadow: var(--calkora-shadow);
}

.nav-link {
    font-weight: 600;
    color: var(--calkora-text) !important;
    padding: 0.8rem 0.9rem !important;
}

.btn-brand,
.btn-outline-brand {
    border-radius: 999px;
    font-weight: 700;
    padding: 0.8rem 1.25rem;
}

.btn-brand {
    background: linear-gradient(135deg, var(--calkora-primary), #2e7a50);
    border: none;
    color: #fff;
    box-shadow: 0 12px 20px rgba(27,93,59,0.2);
}

.btn-brand:hover {
    background: linear-gradient(135deg, var(--calkora-primary-strong), var(--calkora-primary));
    color: #fff;
}

.btn-outline-brand {
    border: 1.5px solid var(--calkora-primary);
    color: var(--calkora-primary);
}

.btn-outline-brand:hover {
    background: var(--calkora-primary);
    color: #fff;
}

.hero-shell {
    background: linear-gradient(180deg, rgba(27,93,59,0.08), rgba(27,93,59,0.02));
    padding: 4rem 0 3rem;
}

.hero-wrap {
    padding-top: 1.5rem;
}

.eyebrow {
    display: inline-block;
    font-size: 0.76rem;
    font-weight: 800;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--calkora-primary);
    margin-bottom: 1rem;
}

.eyebrow-dark {
    color: #1d3d2c;
}

.hero-wrap h1 {
    font-weight: 800;
    letter-spacing: -0.065em;
    font-size: clamp(2.8rem, 5vw, 5rem);
    line-height: 0.96;
    max-width: 720px;
    margin-bottom: 1.2rem;
}

.hero-wrap .lead {
    font-size: 1.25rem;
    color: var(--calkora-muted);
    max-width: 640px;
    margin-bottom: 2rem;
}

.hero-actions {
    margin-bottom: 2rem;
}

.hero-metrics {
    display: grid;
    grid-template-columns: repeat(3, minmax(120px, 1fr));
    gap: 1rem;
    max-width: 550px;
}

.hero-metrics div {
    background: rgba(255,255,255,0.75);
    border: 1px solid var(--calkora-border);
    border-radius: var(--radius-md);
    padding: 0.9rem 1rem;
}

.hero-metrics strong {
    display: block;
    font-size: 1.2rem;
    color: var(--calkora-primary);
}

.hero-metrics span {
    color: var(--calkora-muted);
    font-size: 0.82rem;
}

.hero-visual {
    position: relative;
    padding: 0 1.2rem 1.2rem 0;
}

.hero-image {
    width: 100%;
    height: 620px;
    object-fit: cover;
    border-radius: var(--radius-xl);
    box-shadow: var(--calkora-shadow);
}

.floating-panel {
    position: absolute;
    left: 1.3rem;
    bottom: 1.3rem;
    width: min(92%, 360px);
    background: rgba(255,255,255,0.92);
    border: 1px solid var(--calkora-border);
    backdrop-filter: blur(8px);
    border-radius: var(--radius-lg);
    box-shadow: var(--calkora-shadow);
    padding: 1.1rem 1.2rem;
}

.floating-panel h3 {
    font-size: 1.2rem;
    font-weight: 800;
    margin-bottom: 0.8rem;
}

.floating-panel ul {
    list-style: none;
    padding: 0;
    margin: 0;
    display: grid;
    gap: 0.5rem;
}

.floating-panel li a {
    display: block;
    color: var(--calkora-text);
    font-weight: 600;
    padding: 0.45rem 0;
    border-bottom: 1px solid rgba(17,41,29,0.08);
}

.feature-card,
.guide-card,
.check-list > div {
    background: var(--calkora-surface);
    border: 1px solid var(--calkora-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--calkora-shadow);
}

.section-block {
    padding: 4.5rem 0;
}

.section-heading {
    margin-bottom: 1.2rem;
}

.section-heading h2 {
    font-weight: 800;
    letter-spacing: -0.05em;
    margin: 0;
    font-size: clamp(2rem, 3vw, 3rem);
}

.text-link {
    color: var(--calkora-primary);
    font-weight: 700;
}

.feature-card {
    height: 100%;
    padding: 1.5rem 1.25rem;
}

.feature-icon {
    width: 3rem;
    height: 3rem;
    border-radius: 50%;
    background: var(--calkora-secondary);
    color: var(--calkora-primary);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    margin-bottom: 1rem;
}

.feature-card h3 {
    font-size: 1.5rem;
    font-weight: 800;
    margin-bottom: 0.6rem;
}

.feature-card p {
    color: var(--calkora-muted);
    margin-bottom: 1rem;
}

.feature-card a {
    color: var(--calkora-primary);
    font-weight: 800;
}

.alt-section {
    background: rgba(27,93,59,0.03);
}

.image-stack {
    position: relative;
    min-height: 520px;
}

.stack-main {
    width: 100%;
    height: 520px;
    object-fit: cover;
    border-radius: var(--radius-xl);
    box-shadow: var(--calkora-shadow);
}

.stack-thumb {
    position: absolute;
    right: -1rem;
    bottom: -1rem;
    width: 220px;
    height: 220px;
    object-fit: cover;
    border-radius: 24px;
    border: 6px solid #fff;
    box-shadow: var(--calkora-shadow);
}

.check-list {
    display: grid;
    gap: 1rem;
    margin-top: 2rem;
}

.check-list > div {
    padding: 1.25rem 1.15rem;
}

.check-list strong {
    display: block;
    font-size: 1.15rem;
    margin-bottom: 0.35rem;
}

.check-list p {
    margin: 0;
    color: var(--calkora-muted);
}

.guide-card {
    overflow: hidden;
    height: 100%;
}

.guide-card img {
    width: 100%;
    height: 220px;
    object-fit: cover;
}

.guide-content {
    padding: 1.1rem 1.1rem 1.25rem;
}

.guide-content h3 {
    font-size: 1.35rem;
    font-weight: 800;
    margin-bottom: 0.65rem;
}

.guide-content p {
    color: var(--calkora-muted);
    margin-bottom: 0;
}

.site-footer {
    background: #10221a;
    color: #e9f1ed;
}

.site-footer a {
    color: rgba(255,255,255,0.8);
}

.site-footer h6 {
    font-weight: 700;
    color: #fff;
    margin-bottom: 1rem;
}

.brand-mark-footer {
    color: #fff;
    margin-bottom: 1rem;
}

.footer-copy {
    color: rgba(255,255,255,0.72);
    max-width: 340px;
    margin-bottom: 0;
}

.footer-bottom {
    border-color: rgba(255,255,255,0.14) !important;
    color: rgba(255,255,255,0.72);
}

.field-error {
    color: #b42318;
    font-size: 0.875rem;
}

.form-control.is-invalid,
.form-select.is-invalid {
    border-color: #dc3545;
}

input:focus,
select:focus,
button:focus,
a:focus {
    outline: 3px solid rgba(27,93,59,0.22);
    outline-offset: 2px;
}

.summary-value {
    font-size: clamp(1.4rem, 2vw, 2rem);
    font-weight: 700;
    color: var(--calkora-primary);
}

.rule-list li {
    margin-bottom: 0.5rem;
}

@media (max-width: 991.98px) {
    .hero-shell { padding-top: 2.5rem; }
    .hero-image { height: 480px; }
    .topbar-inner { flex-direction: column; text-align: center; }
    .topbar-right { justify-content: center; flex-wrap: wrap; }
}

@media (max-width: 767.98px) {
    .navbar-brand { font-size: 1.6rem; }
    .hero-wrap h1 { font-size: 2.7rem; }
    .hero-wrap .lead { font-size: 1.05rem; }
    .hero-metrics { grid-template-columns: 1fr; }
    .stack-thumb { right: 1rem; width: 180px; height: 180px; }
}