:root {
    --paper: #f3eee3;
    --paper-2: #fffbf4;
    --ink: #1b1712;
    --ink-soft: #5c564c;
    --line: #d9d0c0;
    --teal: #0f6b56;
    --amber: #c07f00;
    --blue: #215ea8;
    --rose: #b44538;
    --violet: #6b4a9e;
    --gray: #8d877c;
    --c1: #215ea8;
    --c2: #0f6b56;
    --c3: #c07f00;
    --c4: #b44538;
    --c5: #6b4a9e;
    --o-ts: #b44538;
    --o-as: #c07f00;
    --o-s: #0f6b56;
    --o-ss: #215ea8;
    --shadow: 0 18px 40px rgba(40, 28, 8, 0.08);
}

* {
    box-sizing: border-box;
}

html,
body {
    margin: 0;
    min-height: 100%;
}

body {
    background:
        radial-gradient(1200px 500px at 10% -10%, #efe4c8 0%, transparent 55%),
        var(--paper);
    color: var(--ink);
    font-family: Outfit, "Segoe UI", sans-serif;
    font-size: 16px;
    line-height: 1.45;
}

a {
    color: var(--teal);
}

.page {
    max-width: 1120px;
    margin: 0 auto;
    padding: 24px 18px 64px;
}

.crumb ol {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 6px 0;
    list-style: none;
    margin: 0 0 18px;
    padding: 0;
    font-family: "IBM Plex Mono", ui-monospace, monospace;
    font-size: 12px;
}

.crumb li {
    display: inline-flex;
    align-items: center;
}

.crumb li:not(:last-child)::after {
    content: "/";
    margin: 0 8px;
    color: var(--gray);
}

.crumb a {
    text-decoration: none;
}

.crumb [aria-current="page"] {
    color: var(--ink-soft);
}

.eyebrow {
    margin: 0 0 8px;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    font-size: 11px;
    font-weight: 560;
    color: var(--teal);
}

h1,
h2,
h3 {
    font-family: Fraunces, Georgia, serif;
    font-optical-sizing: auto;
    margin: 0;
}

h1 {
    font-size: clamp(28px, 4vw, 40px);
    font-weight: 620;
    letter-spacing: -0.03em;
    line-height: 1.1;
    max-width: 20ch;
}

h2 {
    font-size: 22px;
    font-weight: 620;
}

h3 {
    font-size: 15px;
    font-weight: 620;
    margin: 0 0 6px;
}

.lede {
    max-width: 64ch;
    color: var(--ink-soft);
    margin: 10px 0 0;
}

.pipeline-intro {
    max-width: 68ch;
    color: var(--ink-soft);
    margin: 12px 0 0;
    font-size: 15px;
    line-height: 1.5;
}

.story-box {
    margin: 18px 0 22px;
    padding: 14px 16px 16px;
    background: var(--paper-2);
    border: 1px solid var(--line);
    box-shadow: var(--shadow);
}

.story-box h2 {
    font-size: 18px;
    margin-bottom: 6px;
}

.story-lead {
    margin: 0 0 10px;
    color: var(--ink-soft);
    font-size: 14px;
    max-width: 64ch;
}

.story-list {
    margin: 0;
    padding-left: 1.25em;
    color: var(--ink);
    font-size: 14.5px;
    line-height: 1.5;
    max-width: 72ch;
}

.story-list li {
    margin: 0.45em 0;
}

.story-list li::marker {
    color: var(--teal);
    font-weight: 560;
}

/* ---- kontrol ---- */

.controls {
    display: grid;
    grid-template-columns: 1fr 1fr auto;
    gap: 14px;
    align-items: end;
    margin: 20px 0 16px;
    padding: 14px 16px;
    background: var(--paper-2);
    border: 1px solid var(--line);
    box-shadow: var(--shadow);
}

.ctrl {
    display: grid;
    grid-template-columns: 1fr 5rem;
    grid-template-areas:
        "label label"
        "range num";
    gap: 8px 10px;
    align-items: center;
}

.ctrl label {
    grid-area: label;
    font-size: 13px;
    font-weight: 560;
    color: var(--ink-soft);
}

.ctrl .unit {
    color: var(--gray);
    font-family: "IBM Plex Mono", ui-monospace, monospace;
    font-size: 12px;
}

.ctrl input[type="range"] {
    grid-area: range;
    width: 100%;
    accent-color: var(--teal);
}

.ctrl input[type="number"] {
    grid-area: num;
    width: 100%;
    padding: 7px 8px;
    border: 1px solid var(--line);
    border-radius: 8px;
    background: #fffdf8;
    color: var(--ink);
    font: 500 15px "IBM Plex Mono", ui-monospace, monospace;
}

.presets {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.presets button {
    padding: 9px 12px;
    border: 1px solid var(--line);
    border-radius: 8px;
    background: #fffdf8;
    color: var(--ink);
    font: 560 13px Outfit, sans-serif;
    cursor: pointer;
    white-space: nowrap;
}

.presets button.primary {
    background: var(--teal);
    border-color: var(--teal);
    color: #f4fff9;
}

.presets button:hover {
    border-color: #b9ae9a;
}

/* ---- hasil ---- */

.result {
    display: grid;
    grid-template-columns: minmax(220px, 320px) 1fr;
    gap: 10px 22px;
    align-items: center;
    padding: 16px 18px;
    background: linear-gradient(180deg, #fff8ea 0%, var(--paper-2) 100%);
    border: 1px solid var(--line);
    border-left: 5px solid var(--amber);
    box-shadow: var(--shadow);
}

.result-label {
    margin: 0;
    font-size: 12px;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--gray);
}

.result-big {
    margin: 2px 0 0;
    font-family: Fraunces, Georgia, serif;
    font-size: clamp(30px, 5vw, 44px);
    font-weight: 700;
    letter-spacing: -0.03em;
    line-height: 1.05;
    color: var(--ink);
}

.result-sub {
    margin: 4px 0 0;
    font-family: "IBM Plex Mono", ui-monospace, monospace;
    font-size: 13px;
    color: var(--ink-soft);
}

.result-nums {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 12px;
    margin: 0;
}

.result-nums div {
    padding: 8px 10px;
    background: #fffdf8;
    border: 1px solid var(--line);
    border-radius: 8px;
}

.result-nums dt {
    font-size: 11px;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--gray);
}

.result-nums dd {
    margin: 3px 0 0;
    font-family: "IBM Plex Mono", ui-monospace, monospace;
    font-size: 13px;
    color: var(--ink);
}

/* ---- strip cara pakai ---- */

.read {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 8px;
    margin: 16px 0;
}

.read div {
    padding: 10px 12px;
    background: var(--paper-2);
    border: 1px solid var(--line);
}

.read p {
    margin: 0;
    color: var(--ink-soft);
    font-size: 14px;
}

/* ---- grafik ---- */

.stage {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    align-items: start;
}

.chart-box--full {
    grid-column: 1 / -1;
}

.chart-box {
    padding: 14px 14px 12px;
    background: var(--paper-2);
    border: 1px solid var(--line);
    box-shadow: var(--shadow);
}

.chart-head {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    gap: 10px;
    margin-bottom: 6px;
}

.chart-head h2 {
    font-size: 19px;
}

.chart-note {
    margin: 0;
    font-family: "IBM Plex Mono", ui-monospace, monospace;
    font-size: 11.5px;
    color: var(--gray);
}

svg.chart {
    display: block;
    width: 100%;
    height: auto;
    overflow: visible;
}

svg.chart text {
    font-family: "IBM Plex Mono", ui-monospace, monospace;
}

.grid {
    stroke: #e6ddcb;
    stroke-width: 1;
    stroke-dasharray: 3 4;
}

.grid.axis {
    stroke: #b9ae9a;
    stroke-dasharray: none;
}

.bline {
    stroke: #eee6d6;
    stroke-width: 1;
}

.xline {
    stroke: var(--ink);
    stroke-width: 1.5;
    stroke-dasharray: 5 4;
}

.tick {
    fill: var(--gray);
    font-size: 10px;
}

.mf {
    fill: none;
    stroke-width: 2;
}

.mf-fill {
    stroke: none;
    opacity: 0.1;
}

.mf-clip {
    stroke: none;
    opacity: 0.32;
}

.mf-label {
    font-size: 10px;
    font-weight: 500;
}

.mf.c1 { stroke: var(--c1); }
.mf.c2 { stroke: var(--c2); }
.mf.c3 { stroke: var(--c3); }
.mf.c4 { stroke: var(--c4); }
.mf.c5 { stroke: var(--c5); }

.mf-fill.c1 { fill: var(--c1); }
.mf-fill.c2 { fill: var(--c2); }
.mf-fill.c3 { fill: var(--c3); }
.mf-fill.c4 { fill: var(--c4); }
.mf-fill.c5 { fill: var(--c5); }

.mf-label.c1 { fill: var(--c1); }
.mf-label.c2 { fill: var(--c2); }
.mf-label.c3 { fill: var(--c3); }
.mf-label.c4 { fill: var(--c4); }
.mf-label.c5 { fill: var(--c5); }

.mf.o-ts { stroke: var(--o-ts); }
.mf.o-as { stroke: var(--o-as); }
.mf.o-s { stroke: var(--o-s); }
.mf.o-ss { stroke: var(--o-ss); }

.mf-fill.o-ts, .mf-clip.o-ts { fill: var(--o-ts); }
.mf-fill.o-as, .mf-clip.o-as { fill: var(--o-as); }
.mf-fill.o-s, .mf-clip.o-s { fill: var(--o-s); }
.mf-fill.o-ss, .mf-clip.o-ss { fill: var(--o-ss); }

.mf-label.o-ts { fill: var(--o-ts); }
.mf-label.o-as { fill: var(--o-as); }
.mf-label.o-s { fill: var(--o-s); }
.mf-label.o-ss { fill: var(--o-ss); }

.dot {
    stroke: #fffdf8;
    stroke-width: 1.5;
}

.dot.c1 { fill: var(--c1); }
.dot.c2 { fill: var(--c2); }
.dot.c3 { fill: var(--c3); }
.dot.c4 { fill: var(--c4); }
.dot.c5 { fill: var(--c5); }
.dot.o-ts { fill: var(--o-ts); }
.dot.o-as { fill: var(--o-as); }
.dot.o-s { fill: var(--o-s); }
.dot.o-ss { fill: var(--o-ss); }

.spike.o-ts { fill: var(--o-ts); }
.spike.o-as { fill: var(--o-as); }
.spike.o-s { fill: var(--o-s); }
.spike.o-ss { fill: var(--o-ss); }

.alpha-label {
    font-size: 10.5px;
    fill: var(--ink);
}

.centroid-label {
    font-size: 11px;
    font-weight: 500;
    fill: var(--ink);
}

/* ---- legenda di bawah grafik ---- */

.legend {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: 4px 12px;
    list-style: none;
    margin: 10px 0 0;
    padding: 0;
}

.legend li {
    display: flex;
    align-items: center;
    gap: 7px;
    font-size: 13px;
    color: var(--ink-soft);
}

.legend i {
    flex: none;
    width: 18px;
    height: 4px;
    border-radius: 2px;
}

.legend b {
    margin-left: auto;
    font-family: "IBM Plex Mono", ui-monospace, monospace;
    font-size: 12.5px;
    color: var(--gray);
}

.legend li.on b {
    color: var(--ink);
}

.sw.c1 { background: var(--c1); }
.sw.c2 { background: var(--c2); }
.sw.c3 { background: var(--c3); }
.sw.c4 { background: var(--c4); }
.sw.c5 { background: var(--c5); }
.sw.o-ts { background: var(--o-ts); }
.sw.o-as { background: var(--o-as); }
.sw.o-s { background: var(--o-s); }
.sw.o-ss { background: var(--o-ss); }

/* ---- tabel rule ---- */

.rules {
    margin: 24px 0 0;
}

.rules h2 {
    margin-bottom: 6px;
}

.rules-note {
    margin: 0 0 12px;
    max-width: 72ch;
    color: var(--ink-soft);
    font-size: 14.5px;
}

.table-wrap {
    overflow-x: auto;
}

table {
    border-collapse: collapse;
    width: 100%;
    min-width: 560px;
    background: var(--paper-2);
    font-size: 13px;
}

table caption {
    caption-side: top;
    text-align: left;
    font-size: 12px;
    color: var(--gray);
    padding-bottom: 6px;
}

th,
td {
    border: 1px solid var(--line);
    padding: 7px 6px;
    text-align: center;
}

thead th {
    font-family: Outfit, sans-serif;
    font-weight: 560;
    font-size: 12px;
    color: var(--ink-soft);
    background: #f6f0e2;
    line-height: 1.2;
}

thead th .axis-tag {
    display: block;
    margin-top: 3px;
    font-family: "IBM Plex Mono", ui-monospace, monospace;
    font-size: 10px;
    color: var(--gray);
}

tbody th {
    text-align: left;
    font-weight: 560;
    font-size: 12.5px;
    background: #f6f0e2;
    color: var(--ink-soft);
    white-space: nowrap;
}

tbody th .axis-tag {
    display: block;
    font-family: "IBM Plex Mono", ui-monospace, monospace;
    font-size: 10px;
    font-weight: 400;
    color: var(--gray);
}

td {
    color: #9c9488;
    font-family: "IBM Plex Mono", ui-monospace, monospace;
    transition: background 0.12s ease;
}

td .alpha {
    display: block;
    font-size: 10px;
    margin-top: 2px;
    color: var(--teal);
}

td.on {
    color: var(--ink);
    font-weight: 500;
    background: #fdf3d8;
    box-shadow: inset 0 0 0 2px #e8c46a;
}

td.on.pick {
    background: #f6e2a8;
}

/* ---- langkah ---- */

.steps {
    margin: 24px 0 0;
}

.steps h2 {
    margin-bottom: 10px;
}

.steps ol {
    list-style: none;
    margin: 0;
    padding: 0;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.steps li {
    padding: 14px 16px;
    background: var(--paper-2);
    border: 1px solid var(--line);
    box-shadow: var(--shadow);
}

.steps h3 {
    display: flex;
    align-items: baseline;
    gap: 8px;
}

.step-note {
    margin: 0 0 8px;
    color: var(--ink-soft);
    font-size: 13.5px;
}

.step-guide {
    margin: 0 0 10px;
    padding-left: 1.2em;
    color: var(--ink-soft);
    font-size: 13.5px;
    line-height: 1.45;
    max-width: 68ch;
}

.step-guide li {
    margin: 0.35em 0;
}

.calc {
    border-top: 1px dashed var(--line);
    padding-top: 9px;
}

.calc .mini {
    margin: 8px 0 4px;
    font-size: 11px;
    letter-spacing: 0.07em;
    text-transform: uppercase;
    color: var(--gray);
}

.calc .mini:first-child {
    margin-top: 0;
}

.calc .line {
    margin: 3px 0;
    font-family: "IBM Plex Mono", ui-monospace, monospace;
    font-size: 12.5px;
    color: var(--ink-soft);
    overflow-wrap: anywhere;
}

.calc .line b {
    color: var(--ink);
    font-weight: 500;
}

.calc .line.strong {
    color: var(--ink);
}

.calc .prose {
    margin: 0 0 10px;
    font-size: 14px;
    line-height: 1.5;
    color: var(--ink-soft);
    max-width: 68ch;
}

.calc .formula {
    margin: 4px 0;
    font-family: "IBM Plex Mono", ui-monospace, monospace;
    font-size: 13px;
    color: var(--ink-soft);
    overflow-wrap: anywhere;
}

.calc .formula.strong {
    color: var(--ink);
    font-weight: 500;
}

.calc-table {
    width: 100%;
    max-width: 640px;
    margin: 8px 0 12px;
    border-collapse: collapse;
    font-size: 13px;
}

.calc-table th,
.calc-table td {
    padding: 7px 9px;
    border: 1px solid var(--line);
    text-align: left;
}

.calc-table thead th {
    background: var(--paper-2);
    font-weight: 560;
    font-size: 12px;
}

.calc-table td.num {
    font-family: "IBM Plex Mono", ui-monospace, monospace;
    text-align: right;
}

/* ---- output ---- */

.output-box {
    margin-top: 24px;
}

.chart-foot {
    margin: 10px 0 0;
    font-size: 13.5px;
    color: var(--ink-soft);
}

/* ---- istilah & definisi ---- */

.words {
    margin: 24px 0 0;
    padding: 16px 18px 14px;
    background: var(--paper-2);
    border: 1px solid var(--line);
}

.words-head {
    display: flex;
    flex-wrap: wrap;
    align-items: baseline;
    justify-content: space-between;
    gap: 8px 16px;
    margin-bottom: 4px;
}

.words-head h2 {
    margin: 0;
}

.copy-actions {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 8px 10px;
}

.copy-actions button {
    padding: 7px 11px;
    border: 1px solid var(--line);
    border-radius: 8px;
    background: #fffdf8;
    color: var(--ink);
    font: 560 12px Outfit, sans-serif;
    cursor: pointer;
    white-space: nowrap;
}

.copy-actions button:hover {
    border-color: #b9ae9a;
}

.copy-status:empty {
    display: none;
}

.copy-status {
    font-size: 12.5px;
    color: var(--teal);
    max-width: 22ch;
}

.words > p {
    margin: 6px 0 10px;
    max-width: 74ch;
    color: var(--ink-soft);
    font-size: 14.5px;
}

.words dl {
    display: grid;
    grid-template-columns: 10rem 1fr;
    gap: 8px 16px;
    margin: 0;
}

.words dt {
    font-family: "IBM Plex Mono", ui-monospace, monospace;
    font-size: 12.5px;
    color: var(--teal);
    padding-top: 2px;
}

.words dd {
    margin: 0;
    color: var(--ink-soft);
    font-size: 14.5px;
}

.tiny {
    margin: 12px 0 0;
    font-size: 12.5px;
    color: var(--gray);
}

.defs h3 {
    margin: 14px 0 6px;
    font-size: 14px;
}

.defs dl {
    display: grid;
    grid-template-columns: 9rem 1fr;
    gap: 6px 16px;
    margin: 0;
}

.defs dt {
    display: flex;
    align-items: center;
    gap: 7px;
    font-size: 13px;
    color: var(--ink);
}

.defs dd {
    margin: 0;
    font-family: "IBM Plex Mono", ui-monospace, monospace;
    font-size: 12px;
    color: var(--ink-soft);
    overflow-wrap: anywhere;
}

.defs i {
    flex: none;
    width: 16px;
    height: 4px;
    border-radius: 2px;
}

/* ---- footer ---- */

.foot {
    margin: 28px 0 0;
    padding-top: 14px;
    border-top: 1px solid var(--line);
    color: var(--ink-soft);
    font-size: 14px;
}

@media (max-width: 900px) {
    .controls,
    .stage,
    .steps ol {
        grid-template-columns: 1fr;
    }

    .result {
        grid-template-columns: 1fr;
    }

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

@media (max-width: 620px) {
    .result-nums,
    .read {
        grid-template-columns: 1fr;
    }

    .words dl,
    .defs dl {
        grid-template-columns: 1fr;
    }

    .words dt {
        padding-top: 6px;
    }
}