.walk-hero h1 {
    max-width: 22ch;
    font-size: clamp(28px, 4.2vw, 44px);
}

.walk-toc {
    margin: 0 0 36px;
    padding: 14px 16px 12px;
    background: var(--paper-2);
    border: 1px solid var(--line);
}

.walk-toc p {
    margin: 0 0 8px;
    font-size: 11px;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    font-weight: 560;
    color: var(--teal);
}

.walk-toc ol {
    display: flex;
    flex-wrap: wrap;
    gap: 6px 14px;
    margin: 0;
    padding: 0;
    list-style: none;
}

.walk-toc a {
    font-family: "IBM Plex Mono", ui-monospace, monospace;
    font-size: 13px;
    text-decoration: none;
}

.walk-section {
    margin: 0 0 40px;
    padding-top: 8px;
}

.walk-copy-head {
    align-items: center;
    flex-wrap: wrap;
    gap: 10px;
    margin: 0 0 10px;
}

.walk-copy-head h2 {
    margin: 0;
    flex: 1 1 auto;
}

.copy-actions {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 8px 12px;
    flex: 0 1 auto;
}

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

.copy-status {
    font-size: 13px;
    color: var(--ink-soft);
}

.walk-section h2 {
    font-family: Fraunces, Georgia, serif;
    font-optical-sizing: auto;
    font-size: 26px;
    font-weight: 620;
    letter-spacing: -0.03em;
    margin: 0 0 10px;
}

.walk-section h3 {
    font-family: Fraunces, Georgia, serif;
    font-size: 18px;
    font-weight: 620;
    margin: 22px 0 8px;
}

.walk-section p,
.walk-section li {
    color: var(--ink-soft);
    max-width: 68ch;
}

.walk-section p {
    margin: 0 0 10px;
}

.walk-section ul,
.walk-section ol {
    margin: 0 0 12px;
    padding-left: 1.2em;
}

.walk-section ol.steps {
    margin: 0 0 14px;
    padding-left: 1.35em;
}

.walk-section ol.steps li {
    margin-bottom: 8px;
}

.walk-section h3.step-label {
    font-family: Outfit, "Segoe UI", sans-serif;
    font-size: 11px;
    font-weight: 620;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--teal);
    margin: 20px 0 8px;
}

.walk-section h3.step-label:first-of-type {
    margin-top: 0;
}

.walk-hero .hero-alur {
    margin: 14px 0 0;
    padding-left: 1.35em;
    max-width: 68ch;
    color: var(--ink-soft);
    font-size: 15px;
    line-height: 1.55;
}

.walk-hero .hero-alur li + li {
    margin-top: 6px;
}

.walk-section li + li {
    margin-top: 6px;
}

.formula {
    margin: 0 0 12px;
    font-family: "IBM Plex Mono", ui-monospace, monospace;
    font-size: 14px;
    color: var(--teal);
}

.mono {
    font-family: "IBM Plex Mono", ui-monospace, monospace;
    font-size: 0.92em;
    background: #efe6d4;
    padding: 0 5px;
    border-radius: 4px;
}

.result {
    margin: 14px 0;
    padding: 11px 13px;
    background: #d7efe6;
    border-left: 3px solid var(--teal);
    color: var(--ink);
    max-width: none;
}

.htable {
    width: 100%;
    max-width: 640px;
    border-collapse: collapse;
    margin: 12px 0 16px;
    font-family: "IBM Plex Mono", ui-monospace, monospace;
    font-size: 13px;
}

.htable-wide {
    max-width: 100%;
}

.htable th,
.htable td {
    border-bottom: 1px solid var(--line);
    padding: 6px 8px;
    text-align: left;
}

.htable th {
    color: var(--ink-soft);
    font-weight: 500;
    font-size: 11px;
    letter-spacing: 0.06em;
    text-transform: uppercase;
}

.genes {
    font-family: "IBM Plex Mono", ui-monospace, monospace;
    font-size: 14px;
    letter-spacing: 0.08em;
}

.lab {
    margin: 16px 0 8px;
    padding: 20px 22px;
    border: 1px solid var(--line);
    border-radius: 12px;
    background: var(--paper-2);
}

.lab .hero-actions {
    margin-top: 0;
    margin-bottom: 14px;
}

.lab-word {
    margin: 0;
    font-family: "IBM Plex Mono", ui-monospace, monospace;
    font-size: clamp(22px, 4vw, 34px);
    letter-spacing: 0.14em;
    font-weight: 500;
}

.lab-meta {
    margin: 8px 0 14px;
    color: var(--ink-soft);
    font-size: 14px;
}

.lab-log-wrap {
    max-height: 280px;
    overflow: auto;
    padding: 14px 16px;
    border: 1px solid var(--line);
    border-radius: 8px;
    background: #fffdf8;
}

.lab-log {
    margin: 0;
    padding: 0;
    overflow: visible;
    font-family: "IBM Plex Mono", ui-monospace, monospace;
    font-size: 13px;
    line-height: 1.55;
    white-space: pre;
}

.lab-log-wrap:has(.lab-log:empty) {
    display: none;
}

button.btn {
    cursor: pointer;
    appearance: none;
    font-family: Outfit, "Segoe UI", sans-serif;
}

.check-ok {
    color: var(--teal);
}

.check-fail {
    color: #9b2c2c;
}

.chr-label {
    margin: 4px 0 2px;
    font-size: 13px;
    color: var(--ink-soft);
}

.chr {
    display: flex;
    flex-wrap: wrap;
    gap: 4px;
    margin: 0 0 8px;
    font-family: "IBM Plex Mono", ui-monospace, monospace;
}

.chr span {
    min-width: 1.85em;
    height: 1.85em;
    padding: 0 4px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--line);
    background: #fffdf8;
    border-radius: 4px;
}

.chr span.swap {
    background: #d7efe6;
    border-color: var(--teal);
}

.chr span.mut {
    background: #f7e4c4;
    border-color: #c07f00;
}

.chr span.hit {
    background: #d7efe6;
    border-color: var(--teal);
}

.pair-chr {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px 28px;
    max-width: 640px;
    margin: 0 0 14px;
}

.wheel {
    display: flex;
    height: 28px;
    max-width: 640px;
    overflow: hidden;
    border: 1px solid var(--line);
    border-radius: 6px;
}

.wheel i {
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 0;
    overflow: hidden;
    font-style: normal;
    font-family: "IBM Plex Mono", ui-monospace, monospace;
    font-size: 11px;
    color: var(--ink);
}

.wheel i.pick {
    box-shadow: inset 0 0 0 2px var(--ink);
}

.darts {
    position: relative;
    height: 22px;
    max-width: 640px;
    margin: 4px 0 14px;
}

.darts span {
    position: absolute;
    top: 0;
    transform: translateX(-50%);
    font-family: "IBM Plex Mono", ui-monospace, monospace;
    font-size: 11px;
    color: var(--teal);
    white-space: nowrap;
}

.code-block {
    display: block;
    overflow: auto;
    margin: 12px 0 0;
    padding: 14px 16px;
    max-height: 70vh;
    background: #1b1712;
    color: #f4eee3;
    border-radius: 10px;
    font-family: "IBM Plex Mono", ui-monospace, monospace;
    font-size: 13px;
    line-height: 1.55;
    white-space: pre;
}

.code-block:empty {
    display: none;
}

@media (max-width: 640px) {
    .pair-chr {
        grid-template-columns: 1fr;
    }
}