:root {
    --sn-muslin: #EFE4CF;
    --sn-walnut: #3A2718;
    --sn-thread: #A33A3A;
    --sn-mute: #6B5344;
    --sn-paper: #F7F1E6;
    --sn-err: #8A2A2A;
    --sn-display: Palatino, "Palatino Linotype", "Book Antiqua", "URW Palladio L", serif;
    --sn-sans: system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
}

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

@media (prefers-reduced-motion: no-preference) {
    html { scroll-behavior: smooth; }
}

body {
    font-family: var(--sn-sans);
    background: var(--sn-muslin);
    color: var(--sn-walnut);
    line-height: 1.55;
    font-size: 16px;
    background-image:
        repeating-linear-gradient(
            0deg,
            transparent 0 31px,
            rgba(58, 39, 24, 0.09) 31px 32px
        );
}

a { color: var(--sn-thread); }

:focus { outline: none; }
:focus-visible { outline: 2px solid var(--sn-thread); outline-offset: 3px; }

.sn-wrap { max-width: 880px; margin: 0 auto; padding: 0 18px; }
.sn-narrow { max-width: 620px; }

.sn-tape {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    height: 28px;
    padding: 0 8px 3px;
    background:
        repeating-linear-gradient(
            90deg,
            var(--sn-walnut) 0 2px,
            #C4A574 2px 10px,
            var(--sn-walnut) 10px 12px,
            #E8D7B5 12px 20px
        );
    color: var(--sn-thread);
    font-family: var(--sn-display);
    font-size: 0.68rem;
    font-weight: 700;
    border-bottom: 3px solid var(--sn-thread);
}

.sn-header { background: var(--sn-paper); position: relative; z-index: 40; }

.sn-navrow {
    display: flex;
    align-items: center;
    justify-content: space-between;
    min-height: 58px;
    gap: 12px;
    border-bottom: 1px dashed var(--sn-walnut);
}

.sn-brand {
    font-family: var(--sn-display);
    font-size: 1.25rem;
    color: var(--sn-walnut);
    text-decoration: none;
    letter-spacing: 0.04em;
}

.sn-nav a {
    color: var(--sn-mute);
    text-decoration: none;
    margin-left: 18px;
    font-size: 0.92rem;
}

.sn-nav a:hover { color: var(--sn-thread); }

.sn-burger {
    display: none;
    width: 42px;
    height: 42px;
    border: 1px dashed var(--sn-walnut);
    background: transparent;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 5px;
    cursor: pointer;
}

.sn-burger span {
    display: block;
    width: 18px;
    height: 2px;
    background: var(--sn-walnut);
}

.sn-hero { padding: 28px 0 8px; }

.sn-pattern {
    position: relative;
    background: var(--sn-paper);
    border: 1px dashed var(--sn-walnut);
    padding: 36px 28px 28px;
    background-image:
        linear-gradient(115deg, transparent 0 46%, rgba(163, 58, 58, 0.35) 46% 46.4%, transparent 46.4% 62%, rgba(58, 39, 24, 0.28) 62% 62.35%, transparent 62.35%),
        repeating-linear-gradient(
            -12deg,
            transparent 0 18px,
            rgba(58, 39, 24, 0.12) 18px 19px,
            transparent 19px 36px
        );
}

.sn-notch {
    position: absolute;
    width: 14px;
    height: 14px;
    background: var(--sn-muslin);
    border: 1px solid var(--sn-walnut);
    transform: rotate(45deg);
}

.sn-notch-tl { top: -8px; left: 28px; }
.sn-notch-tr { top: -8px; right: 48px; }
.sn-notch-bl { bottom: -8px; left: 64px; }
.sn-notch-br { bottom: -8px; right: 32px; }

.sn-label {
    font-family: var(--sn-display);
    font-size: 0.85rem;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--sn-thread);
    margin-bottom: 10px;
}

h1, h2, h3 { font-family: var(--sn-display); font-weight: 600; line-height: 1.2; }

h1 { font-size: clamp(1.7rem, 4vw, 2.35rem); max-width: 14em; margin-bottom: 12px; }
h2 { font-size: 1.55rem; margin-bottom: 10px; }
h3 { font-size: 1.25rem; margin-bottom: 10px; color: var(--sn-thread); }

.sn-lead { max-width: 40em; margin-bottom: 12px; }
.sn-meta { color: var(--sn-mute); margin-bottom: 18px; font-size: 0.95rem; }
.sn-actions { display: flex; flex-wrap: wrap; gap: 10px; }

.sn-btn {
    display: inline-block;
    background: var(--sn-thread);
    color: var(--sn-paper);
    text-decoration: none;
    font-weight: 700;
    border: 0;
    padding: 11px 16px;
    cursor: pointer;
    font-family: inherit;
    font-size: 0.95rem;
}

.sn-btn:hover { filter: brightness(0.95); }

.sn-btn-ghost {
    display: inline-block;
    color: var(--sn-walnut);
    text-decoration: none;
    font-weight: 600;
    padding: 10px 14px;
    border: 1px dashed var(--sn-walnut);
    background: transparent;
}

.sn-section { padding: 36px 0; }
.sn-section-paper { background: var(--sn-paper); }
.sn-note { color: var(--sn-mute); margin-bottom: 16px; }
.sn-section-paper p + p { margin-top: 10px; }

.sn-cards {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
}

.sn-card {
    background: var(--sn-paper);
    border: 1px dashed var(--sn-walnut);
    padding: 16px 16px 12px;
}

.sn-card ul { list-style: none; }
.sn-card li {
    display: flex;
    justify-content: space-between;
    gap: 10px;
    padding: 8px 0;
    border-bottom: 1px dotted rgba(58, 39, 24, 0.35);
    font-size: 0.92rem;
}
.sn-card li:last-child { border-bottom: 0; }
.sn-card li span:last-child { white-space: nowrap; color: var(--sn-mute); }

details { border-bottom: 1px dashed rgba(58, 39, 24, 0.35); }
summary { cursor: pointer; font-weight: 650; padding: 10px 0; font-family: var(--sn-display); }
details p { color: var(--sn-mute); padding: 0 0 12px; }

.sn-form { display: grid; gap: 14px; }
.sn-field label { display: block; font-weight: 600; margin-bottom: 4px; font-size: 0.92rem; }
.sn-opt { font-weight: 400; color: var(--sn-mute); }

.sn-field input,
.sn-field select,
.sn-field textarea {
    width: 100%;
    font: inherit;
    padding: 10px;
    border: 1px dashed var(--sn-walnut);
    background: var(--sn-paper);
    color: var(--sn-walnut);
}

.sn-field input[aria-invalid="true"] { border-color: var(--sn-err); border-style: solid; }

.sn-err { color: var(--sn-err); font-size: 0.88rem; margin-top: 4px; }
.sn-formnote { color: var(--sn-mute); font-size: 0.85rem; }
.sn-done { border: 1px dashed var(--sn-thread); padding: 16px; background: var(--sn-paper); }

.sn-footer {
    background: var(--sn-walnut);
    color: #E8D7B5;
    padding: 28px 0 36px;
    font-size: 0.92rem;
}

.sn-footer a { color: #F3CACA; }
.sn-foot { display: grid; gap: 16px; }
.sn-foot-brand { font-family: var(--sn-display); color: var(--sn-paper); font-size: 1.15rem; margin-bottom: 4px; }

@media (max-width: 760px) {
    .sn-burger { display: flex; }
    .sn-header { position: relative; }

    .sn-nav {
        display: none;
        position: absolute;
        left: 0;
        right: 0;
        top: 100%;
        background: var(--sn-paper);
        flex-direction: column;
        padding: 8px 18px 16px;
        border-bottom: 1px dashed var(--sn-walnut);
        z-index: 20;
    }

    .sn-nav.is-open { display: flex; }
    .sn-nav a { margin: 0; padding: 10px 0; border-bottom: 1px dotted rgba(58, 39, 24, 0.3); }
    .sn-cards { grid-template-columns: 1fr; }
    .sn-pattern { padding: 28px 16px 20px; }
    .sn-tape span:nth-child(n+8) { display: none; }
}

@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    .sn-notch { transform: none; width: 10px; height: 10px; }
}