:root {
    /* DESIGN typography note: IBM Plex Mono** sparingly for measurement marks. */
    --design-font-token: "Mono* Mono**";
    --cream: #FFF1D6;
    --umber: #3A2418;
    --brick: #8E3426;
    --ochre: #D9A441;
    --clay: #C65F38;
    --olive: #687A3D;
    --sand: #F3D9B1;
    --shadow: rgba(58, 36, 24, 0.2);
    --display: 'Bebas Neue', sans-serif;
    --body: 'Nunito Sans', sans-serif;
    --mono: 'IBM Plex Mono', monospace;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
    margin: 0;
    color: var(--umber);
    background: var(--sand);
    font-family: var(--body);
    overflow-x: hidden;
}

.grain-layer {
    position: fixed;
    inset: 0;
    pointer-events: none;
    opacity: 0.26;
    background-image: linear-gradient(45deg, rgba(58, 36, 24, 0.08) 25%, transparent 25%), linear-gradient(-45deg, rgba(255, 241, 214, 0.42) 25%, transparent 25%);
    background-size: 22px 22px;
    z-index: 0;
}

main, .top-tabs { position: relative; z-index: 1; }

.top-tabs {
    position: fixed;
    top: 18px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 10px;
    z-index: 10;
}

.clipped-tab {
    display: inline-block;
    padding: 10px 18px 9px;
    color: var(--umber);
    background: var(--ochre);
    border: 2px solid var(--umber);
    clip-path: polygon(8% 0, 100% 0, 92% 100%, 0 100%);
    font-family: var(--mono);
    font-size: 0.76rem;
    font-weight: 600;
    text-decoration: none;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    box-shadow: 3px 3px 0 var(--shadow);
}

.paddle-board {
    min-height: 100vh;
    padding: 86px clamp(18px, 4vw, 64px) 54px;
    display: grid;
    align-items: end;
    background: radial-gradient(circle at 8% 12%, rgba(217, 164, 65, 0.34) 0 10%, transparent 10.5%), var(--sand);
}

.wordmark-wrap {
    position: relative;
    min-height: 300px;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.edge-label, .mono-tag {
    margin: 0 0 10px;
    font-family: var(--mono);
    font-size: 0.76rem;
    font-weight: 600;
    letter-spacing: 0.09em;
    text-transform: uppercase;
}

.wordmark {
    position: relative;
    margin: 0;
    color: var(--umber);
    font-family: var(--display);
    font-size: clamp(7rem, 24vw, 21rem);
    line-height: 0.8;
    letter-spacing: 0.025em;
    text-shadow: 7px 7px 0 var(--clay), 11px 11px 0 rgba(58, 36, 24, 0.18);
    z-index: 2;
}

.wordmark::first-letter { color: var(--brick); }

.wordmark-shadow {
    position: absolute;
    left: 8%;
    top: 44%;
    width: min(780px, 82vw);
    height: 90px;
    background: var(--olive);
    border: 3px solid var(--umber);
    transform: rotate(-13deg) skewX(-18deg);
    clip-path: polygon(0 18%, 88% 18%, 100% 50%, 88% 82%, 0 82%, 6% 50%);
    opacity: 0.72;
    z-index: 1;
}

.hero-grid, .map-grid {
    display: grid;
    grid-template-columns: repeat(12, 1fr);
    gap: clamp(14px, 2vw, 22px);
}

.angle-card {
    position: relative;
    min-height: 230px;
    padding: clamp(22px, 3vw, 34px);
    background: var(--cream);
    border: 3px solid var(--umber);
    clip-path: polygon(0 16px, 16px 0, calc(100% - 24px) 0, 100% 24px, 100% calc(100% - 18px), calc(100% - 18px) 100%, 22px 100%, 0 calc(100% - 22px));
    box-shadow: 5px 5px 0 rgba(58, 36, 24, 0.16);
    transform: rotate(var(--tilt, 0deg)) translateY(24px);
    opacity: 0;
    transition: transform 500ms cubic-bezier(.2,.9,.2,1), opacity 500ms ease, box-shadow 240ms ease;
}

.angle-card.is-visible {
    opacity: 1;
    transform: rotate(var(--tilt, 0deg)) translateY(0);
}

.angle-card:hover { box-shadow: 9px 9px 0 rgba(58, 36, 24, 0.24); }

.draw-border::before, .draw-border::after {
    content: "";
    position: absolute;
    inset: 8px;
    pointer-events: none;
    clip-path: polygon(0 14px, 14px 0, calc(100% - 20px) 0, 100% 20px, 100% calc(100% - 16px), calc(100% - 16px) 100%, 18px 100%, 0 calc(100% - 18px));
}

.draw-border::before {
    border-top: 4px solid var(--clay);
    border-right: 4px solid var(--clay);
    transform: scaleX(0);
    transform-origin: left top;
    transition: transform 420ms ease;
}

.draw-border::after {
    border-bottom: 4px solid var(--brick);
    border-left: 4px solid var(--brick);
    transform: scaleY(0);
    transform-origin: left bottom;
    transition: transform 420ms ease 160ms;
}

.draw-border:hover::before, .draw-border.is-visible::before { transform: scaleX(1); }
.draw-border:hover::after, .draw-border.is-visible::after { transform: scaleY(1); }

.intro-card { grid-column: span 5; background: var(--cream); }
.ochre-card { grid-column: span 3; background: var(--ochre); }
.olive-card { grid-column: span 4; background: var(--sand); }

.card-number {
    position: absolute;
    right: 20px;
    top: 12px;
    color: rgba(58, 36, 24, 0.18);
    font-family: var(--display);
    font-size: 5rem;
    line-height: 1;
}

h2, h3 {
    margin: 0 0 12px;
    font-family: var(--display);
    font-weight: 400;
    line-height: 0.95;
    letter-spacing: 0.02em;
}

h2 { font-size: clamp(2.6rem, 6vw, 5.5rem); }
h3 { font-size: clamp(2rem, 4vw, 3.7rem); }
p { font-size: clamp(1rem, 1.5vw, 1.16rem); line-height: 1.55; }

.vector-paddle {
    display: flex;
    gap: 12px;
    margin-top: 24px;
}

.vector-paddle span {
    width: 38px;
    height: 132px;
    background: var(--clay);
    border: 3px solid var(--umber);
    clip-path: polygon(20% 0, 80% 0, 100% 24%, 62% 48%, 62% 100%, 38% 100%, 38% 48%, 0 24%);
}

.letter-totems { display: flex; gap: 10px; margin-top: 22px; }
.letter-totems span, .stack-card {
    display: grid;
    place-items: center;
    width: 62px;
    height: 84px;
    color: var(--cream);
    background: var(--brick);
    border: 3px solid var(--umber);
    clip-path: polygon(12% 0, 100% 0, 88% 100%, 0 100%);
    font-family: var(--display);
    font-size: 3rem;
}

.corner-fold {
    width: 90px;
    height: 90px;
    margin-top: 28px;
    background: linear-gradient(135deg, var(--cream) 0 49%, var(--umber) 50% 54%, var(--clay) 55%);
    border: 3px solid var(--umber);
    clip-path: polygon(0 0, 100% 0, 100% 100%);
}

.bench-strip {
    padding: 34px clamp(18px, 4vw, 64px);
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
    background: var(--clay);
    border-block: 4px solid var(--umber);
}

.bench-note {
    padding: 18px 20px;
    background: var(--cream);
    border: 3px dashed var(--umber);
    clip-path: polygon(0 0, calc(100% - 18px) 0, 100% 18px, 100% 100%, 18px 100%, 0 calc(100% - 18px));
    transform: translateY(18px);
    opacity: 0;
    transition: opacity 420ms ease, transform 420ms ease;
}

.bench-note.is-visible { opacity: 1; transform: translateY(0); }
.bench-note span { display: block; margin-bottom: 8px; font-family: var(--mono); font-size: 0.74rem; text-transform: uppercase; }

.sawtooth-divider {
    height: 34px;
    background: linear-gradient(135deg, var(--umber) 25%, transparent 25%) 0 0/34px 34px, linear-gradient(225deg, var(--umber) 25%, transparent 25%) 0 0/34px 34px;
}

.map-board, .closing-collage {
    padding: clamp(54px, 8vw, 110px) clamp(18px, 4vw, 64px);
}

.section-heading {
    max-width: 840px;
    margin-bottom: 28px;
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 440ms ease, transform 440ms ease;
}

.section-heading.is-visible { opacity: 1; transform: translateY(0); }
.map-card.wide { grid-column: span 6; }
.map-card { grid-column: span 3; }
.clay-fill { background: var(--clay); color: var(--cream); }
.cream-card { background: var(--cream); }

.route-line {
    position: relative;
    height: 84px;
    margin-top: 24px;
    border-top: 5px solid var(--umber);
    transform: skewY(-6deg);
}

.route-line span {
    position: absolute;
    top: -15px;
    width: 24px;
    height: 24px;
    background: var(--olive);
    border: 3px solid var(--umber);
    clip-path: polygon(50% 0, 100% 42%, 50% 100%, 0 42%);
}
.route-line span:nth-child(1) { left: 10%; }
.route-line span:nth-child(2) { left: 47%; background: var(--ochre); }
.route-line span:nth-child(3) { right: 8%; background: var(--brick); }

.sliding-arrow {
    width: 160px;
    height: 42px;
    margin-top: 30px;
    background: var(--ochre);
    border: 3px solid var(--umber);
    clip-path: polygon(0 20%, 75% 20%, 75% 0, 100% 50%, 75% 100%, 75% 80%, 0 80%);
    animation: arrowSlide 2.8s ease-in-out infinite;
}

.closing-collage {
    display: grid;
    grid-template-columns: minmax(0, 1.1fr) minmax(280px, 0.9fr);
    gap: 28px;
    align-items: center;
    background: var(--olive);
    border-top: 4px solid var(--umber);
}

.final-card { background: var(--ochre); }
.collage-stack { position: relative; min-height: 340px; }
.stack-card { position: absolute; width: 150px; height: 190px; font-size: 8rem; box-shadow: 6px 6px 0 rgba(58, 36, 24, 0.2); }
.stack-card.one { left: 8%; top: 18px; background: var(--brick); transform: rotate(-12deg); }
.stack-card.two { left: 34%; top: 64px; background: var(--clay); transform: rotate(8deg); }
.stack-card.three { left: 52%; top: 0; background: var(--ochre); color: var(--umber); transform: rotate(-4deg); }
.stack-card.four { left: 24%; top: 154px; background: var(--cream); color: var(--umber); transform: rotate(13deg); }

@keyframes arrowSlide {
    0%, 100% { transform: translateX(0); }
    50% { transform: translateX(26px); }
}

@media (max-width: 900px) {
    .top-tabs { position: absolute; width: calc(100% - 24px); justify-content: center; flex-wrap: wrap; }
    .hero-grid, .map-grid, .closing-collage, .bench-strip { grid-template-columns: 1fr; }
    .intro-card, .ochre-card, .olive-card, .map-card, .map-card.wide { grid-column: auto; }
    .wordmark-wrap { min-height: 230px; }
    .closing-collage { overflow: hidden; }
}

@media (max-width: 560px) {
    .clipped-tab { padding: 8px 10px; font-size: 0.66rem; }
    .paddle-board { padding-top: 112px; }
    .wordmark { font-size: 29vw; }
    .angle-card { min-height: 210px; }
}