.skill-center { max-width: 1240px; margin: 0 auto; }
.skill-hero { padding: 24px 28px; border: 1px solid var(--line); border-radius: 16px; background: linear-gradient(115deg, var(--blue-soft), var(--paper) 75%); }
.skill-eyebrow { color: var(--blue); font-weight: 600; font-size: 12px; letter-spacing: 2px; }
.skill-hero h1 { font-size: clamp(24px, 3vw, 34px); letter-spacing: -1px; margin: 12px 0; }
.skill-hero p, .skill-description { color: var(--muted); line-height: 1.8; }
.skill-flow { display: flex; flex-wrap: wrap; align-items: center; gap: 16px; margin-top: 26px; font-size: 13px; color: var(--ink-2); }
.skill-section-heading { display: flex; align-items: center; justify-content: space-between; gap: 16px; margin: 28px 0 16px; }
.skill-section-heading h2 { font-size: 18px; margin: 0; }
.skill-section-heading h2 span { color: var(--blue); margin-left: 8px; }
.skill-section-heading > span, .skill-metadata, .skill-footnote { font-size: 12px; color: var(--muted); }
.skill-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 20px; align-items: start; }
.skill-card { min-width: 0; background: var(--paper); border: 1px solid var(--line); border-radius: 14px; overflow: hidden; padding: 24px; }
.skill-card-top { display: flex; align-items: center; justify-content: space-between; }
.skill-mark { display: grid; place-items: center; width: 42px; height: 42px; background: var(--blue-soft); border-radius: 12px; color: var(--blue); font-weight: 700; }
.skill-category { color: var(--muted); font-size: 12px; }
.skill-card h2 { font-size: 22px; margin: 20px 0 8px; }
.skill-description { margin: 0 0 18px; }
.skill-tags { display: flex; flex-wrap: wrap; gap: 8px; }
.skill-tags span { background: var(--paper-soft); color: var(--ink-2); border-radius: 5px; padding: 5px 8px; font-size: 12px; }
.skill-metadata { margin: 22px 0 12px; }
.skill-actions { display: flex; flex-wrap: wrap; gap: 10px; }
.skill-guide { margin-top: 24px; border-top: 1px solid var(--line); }
.skill-guide summary { cursor: pointer; padding: 18px 0 0; font-weight: 600; color: var(--blue); }
.skill-guide-body { padding-top: 16px; }
.skill-guide-body ol { padding-left: 24px; }
.skill-guide-body li { padding-left: 5px; margin: 20px 0; }
.skill-guide-body li::marker { color: var(--blue); font-weight: 700; }
.skill-guide-body p { line-height: 1.8; overflow-wrap: anywhere; }
.skill-guide-body li p { margin: 6px 0 0; color: var(--muted); }
.skill-requirement, .skill-note { font-size: 12px; padding: 12px; background: var(--paper-soft); border-radius: 8px; }
.skill-prompt { margin-top: 18px; }
.skill-prompt-head { display: flex; align-items: center; justify-content: space-between; gap: 8px; margin-bottom: 8px; }
.skill-prompt textarea { width: 100%; min-height: 150px; resize: vertical; font-size: 12px; line-height: 1.8; }
.skill-footnote { margin: 20px 0; line-height: 1.8; }
.skill-preparation { margin: 20px 0; padding: 18px 24px; border-left: 3px solid var(--blue); background: var(--paper); border-radius: 0 10px 10px 0; }
.skill-preparation p, .skill-help p, .skill-help dd { line-height: 1.75; color: var(--muted); }
.skill-preparation pre { overflow-x: auto; font-size: 12px; line-height: 1.9; padding: 12px; background: var(--paper-soft); border-radius: 8px; }
.skill-center summary { cursor: pointer; color: var(--blue); font-size: 13px; padding: 8px 0; }
.skill-steps { list-style: none; counter-reset: step; padding: 0; margin: 0; }
.skill-steps > li { counter-increment: step; padding: 20px 0 20px 36px; position: relative; border-top: 1px solid var(--line); }
.skill-steps > li::before { content: counter(step); position: absolute; top: 20px; left: 0; width: 25px; height: 25px; display: grid; place-items: center; border-radius: 50%; background: var(--blue-soft); color: var(--blue); font-size: 13px; font-weight: 700; }
.skill-steps h3 { margin: 2px 0 10px; font-size: 15px; line-height: 1.5; }
.skill-steps p { color: var(--muted); font-size: 13px; line-height: 1.8; overflow-wrap: anywhere; margin: 8px 0 12px; }
.skill-steps .skill-success { padding-left: 12px; border-left: 2px solid var(--blue); color: var(--ink-2); }
.skill-steps code { overflow-wrap: anywhere; }
.skill-task { background: var(--paper-soft); padding: 14px; border-radius: 8px; margin-top: 12px; }
.skill-task > strong { font-size: 13px; }
.skill-prompt { margin-top: 10px; }
.skill-help { border-top: 1px solid var(--line); padding-top: 8px; }
.skill-common-help { margin-top: 20px; padding: 16px 24px; border: 1px solid var(--line); border-radius: 10px; background: var(--paper); }
.skill-help dt { font-weight: 600; margin-top: 16px; }
.skill-help dd { margin: 6px 0 0; font-size: 13px; }
.skill-card { scroll-margin-top: 20px; }
.skill-install > label { display: block; margin-bottom: 8px; font-size: 13px; font-weight: 600; }
.skill-install > select { width: 100%; max-width: 280px; }
.skill-install .skill-prompt > .button { background: var(--blue); color: white; border-color: var(--blue); }
.skill-install [data-install-panel][hidden] { display: none; }
.skill-manual { margin-top: 12px; }
.skill-catalog-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(min(100%, 320px), 1fr)); gap: 20px; }
.skill-summary { display: flex; flex-direction: column; background: var(--paper); border: 1px solid var(--line); border-radius: 14px; padding: 24px; min-width: 0; }
.skill-summary h2 { font-size: 21px; margin: 22px 0 10px; }
.skill-summary > p { line-height: 1.8; color: var(--muted); margin: 0 0 24px; }
.skill-summary-footer { display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap; margin-top: auto; padding-top: 18px; border-top: 1px solid var(--line); }
.skill-summary-footer > span { font-size: 12px; color: var(--muted); }
.skill-detail { max-width: 860px; margin: 0 auto; }
.skill-detail .skill-grid { display: block; }
.skill-detail-nav { display: flex; align-items: center; gap: 16px; color: var(--muted); margin-bottom: 20px; }
.skill-center [hidden] { display: none !important; }
@media (max-width: 520px) { .skill-card { padding: 16px; } .skill-preparation { padding: 16px; } .skill-steps > li { padding-left: 32px; } .skill-task { padding: 10px; } .skill-flow { gap: 12px; } }
@media (max-width: 1000px) { .skill-grid { grid-template-columns: 1fr; } .skill-hero { padding: 24px; } .skill-section-heading { align-items: flex-start; flex-direction: column; } }

.skill-update-check { margin-top: 20px; padding: 16px; border: 1px solid #ddd8f5; border-radius: 12px; background: #faf9ff; }
.skill-quickstart { padding: 16px 18px; margin: 0 0 24px; background: var(--paper-soft); border-radius: 10px; font-size: 13px; line-height: 1.8; }
.skill-quickstart p { margin: 6px 0 0; color: var(--muted); }
.skill-install > select + label { margin-top: 16px; }
.skill-update-check { padding: 4px 12px; margin-top: 12px; background: var(--paper-soft); }
.skill-later { margin-top: 16px; }