.num-input::-webkit-outer-spin-button,.num-input::-webkit-inner-spin-button{-webkit-appearance:none;margin:0}.num-input{-moz-appearance:textfield;appearance:textfield}.v2-steps-list{display:flex;flex-direction:column;gap:.75rem}.v2-step-card{background:var(--color-bg-main, #18181b);border:1px solid var(--color-border, #27272a);border-radius:.75rem;padding:.875rem 1rem;display:flex;flex-direction:column;gap:.25rem}.v2-step-card.is-answer{background:color-mix(in srgb,#2dd4bf 8%,transparent);border-color:color-mix(in srgb,#2dd4bf 30%,transparent);border-left:3px solid #2dd4bf}.v2-step-n{font-size:.62rem;font-weight:800;text-transform:uppercase;letter-spacing:.08em;color:var(--color-text-muted, #71717a);margin:0}.v2-step-title{font-size:.8rem;font-weight:700;color:var(--color-text, #fafafa);margin:0}.v2-step-eq{font-family:ui-monospace,monospace;font-size:.875rem;color:var(--color-text, #fafafa);line-height:1.6;margin:0}.v2-step-eq .hl{color:#2dd4bf;font-weight:800}.v2-step-eq.is-answer-eq{font-size:1.05rem;font-weight:800;color:#2dd4bf}.v2-step-note{font-size:.75rem;color:var(--color-text-muted, #71717a);line-height:1.4;margin:.2rem 0 0}.v3-grid[data-astro-cid-uwgcalkm]{display:grid;grid-template-columns:1fr;gap:1.75rem;align-items:start}@media(min-width:900px){.v3-grid[data-astro-cid-uwgcalkm]{grid-template-columns:1fr 1fr;gap:2rem}}.v3-left[data-astro-cid-uwgcalkm],.v3-right[data-astro-cid-uwgcalkm]{display:flex;flex-direction:column;gap:.5rem}.v2-steps-heading[data-astro-cid-uwgcalkm]{font-size:.68rem;font-weight:900;text-transform:uppercase;letter-spacing:.15em;color:var(--color-text-muted, #71717a);margin:0 0 .5rem;line-height:1.3}.mode-row[data-astro-cid-uwgcalkm]{display:flex;gap:.5rem}.mode-btn[data-astro-cid-uwgcalkm]{flex:1;background:var(--color-bg-main);border:2px solid var(--color-border);border-radius:.625rem;padding:.55rem .5rem;font-size:.8rem;font-weight:700;color:var(--color-text-muted);cursor:pointer;transition:all .15s ease;text-align:center}.mode-btn[data-astro-cid-uwgcalkm]:hover{border-color:#2dd4bf;color:var(--color-text)}.mode-btn[data-astro-cid-uwgcalkm].active{border-color:#2dd4bf;background:color-mix(in srgb,#2dd4bf 12%,transparent);color:#2dd4bf;font-weight:800;box-shadow:0 0 10px #2dd4bf33}.conv-label[data-astro-cid-uwgcalkm]{font-size:.6875rem;font-weight:800;text-transform:uppercase;letter-spacing:.08em;color:var(--color-text-muted, #71717a)}.formula-hint[data-astro-cid-uwgcalkm]{font-size:.8125rem;color:var(--color-text-secondary);background:var(--color-bg);border:1px solid var(--color-border);border-radius:.5rem;padding:.6rem .85rem;line-height:1.45}.input-pair[data-astro-cid-uwgcalkm]{display:grid;grid-template-columns:1fr 1fr;gap:.875rem}.pair-label[data-astro-cid-uwgcalkm]{font-size:.72rem;font-weight:800;color:var(--color-text-secondary);letter-spacing:.05em;display:block;margin-bottom:.35rem}.num-input[data-astro-cid-uwgcalkm]{width:100%;background:var(--color-bg);border:1px solid var(--color-border);border-radius:.625rem;font-size:1.25rem;font-weight:800;color:var(--color-text);font-family:ui-monospace,monospace;padding:.6rem .875rem;outline:none;transition:border-color .15s ease;box-sizing:border-box}.num-input[data-astro-cid-uwgcalkm]:focus{border-color:#2dd4bf}.num-input[data-astro-cid-uwgcalkm].unknown{border-style:dashed;color:var(--color-text-muted, #71717a);background:#2dd4bf0a;cursor:default}.preset-grid[data-astro-cid-uwgcalkm]{display:flex;flex-wrap:wrap;gap:.35rem}.preset-btn[data-astro-cid-uwgcalkm]{background:var(--color-bg);border:1px solid var(--color-border);border-radius:.375rem;color:var(--color-text-muted);font-size:.72rem;font-weight:700;font-family:ui-monospace,monospace;padding:.35rem .65rem;cursor:pointer;transition:all .12s ease}.preset-btn[data-astro-cid-uwgcalkm]:hover{border-color:#2dd4bf;color:#2dd4bf}.empty-prompt[data-astro-cid-uwgcalkm]{display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;padding:3.5rem 1.5rem;color:var(--color-text-muted)}.empty-icon[data-astro-cid-uwgcalkm]{font-size:2.5rem;margin-bottom:.75rem;opacity:.6}.empty-title[data-astro-cid-uwgcalkm]{font-size:.95rem;font-weight:800;color:var(--color-text);margin-bottom:.35rem}.empty-desc[data-astro-cid-uwgcalkm]{font-size:.8125rem;max-width:22rem;line-height:1.5}.edu-grid[data-astro-cid-uwgcalkm]{display:grid;grid-template-columns:1fr 1fr;gap:1rem}@media(max-width:640px){.edu-grid[data-astro-cid-uwgcalkm]{grid-template-columns:1fr}}.edu-card[data-astro-cid-uwgcalkm]{background:var(--color-bg-card);border:1px solid var(--color-border);border-radius:.875rem;padding:1.25rem}.edu-icon[data-astro-cid-uwgcalkm]{width:2.25rem;height:2.25rem;display:flex;align-items:center;justify-content:center;background:color-mix(in srgb,#2dd4bf 12%,transparent);border-radius:.5rem;margin-bottom:.875rem;font-size:.85rem;font-weight:900;color:#2dd4bf}.edu-title[data-astro-cid-uwgcalkm]{font-size:.875rem;font-weight:800;color:var(--color-text);margin-bottom:.4rem}.edu-body[data-astro-cid-uwgcalkm]{font-size:.8rem;color:var(--color-text-secondary);line-height:1.65}.edu-ex[data-astro-cid-uwgcalkm]{background:var(--color-bg);border-radius:.4rem;padding:.5rem .75rem;margin-top:.625rem;font-size:.78rem;font-family:ui-monospace,monospace;color:#2dd4bf;line-height:1.9}