.vk-page { padding: 56px 0 100px; }
.vk-intro { text-align: center; max-width: 56ch; margin: 0 auto 30px; }
.vk-intro .hero__eyebrow { margin-bottom: 18px; }
.vk-intro h1 { font-family: var(--font-display); font-size: clamp(1.8rem, 4vw, 2.4rem); letter-spacing: -0.02em; margin: 0 0 10px; }
.vk-intro p { color: var(--ink-soft); margin: 0; line-height: 1.6; }

.vk-inputs { display: grid; grid-template-columns: 1fr 1fr auto; gap: 14px; align-items: end; margin-bottom: 24px; }
.vk-input-card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius-md); padding: 16px; display: flex; flex-direction: column; gap: 10px; }
.vk-vec-label { font-size: 0.8rem; font-weight: 700; font-family: var(--font-mono); }
.vk-vec-label--a { color: var(--accent); }
.vk-vec-label--b { color: #0f9d94; }
.vk-vec-fields { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; }
.vk-field { display: flex; flex-direction: column; gap: 4px; }
.vk-field label { font-size: 0.68rem; font-weight: 600; color: var(--ink-soft); }
.vk-field input { border: 2px solid var(--line); border-radius: 10px; padding: 9px 10px; font-family: var(--font-mono); font-size: 0.95rem; font-weight: 600; background: var(--bg); color: var(--ink); transition: border-color var(--dur-fast) var(--ease); }
.vk-field input:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px rgba(var(--accent-rgb, 11, 122, 85),0.12); }

.vk-dim-wrap { display: flex; flex-direction: column; gap: 8px; }
.vk-dim-label { font-size: 0.78rem; font-weight: 600; color: var(--ink-soft); }
.vk-dim-btns { display: flex; gap: 6px; background: var(--surface); border: 1px solid var(--line); padding: 4px; border-radius: 12px; }
.vk-dim-btn { border: none; background: transparent; padding: 9px 18px; border-radius: 8px; font-family: var(--font-mono); font-size: 0.82rem; font-weight: 700; color: var(--ink-soft); cursor: pointer; transition: all var(--dur-fast) var(--ease); }
.vk-dim-btn.is-active { background: var(--accent); color: #fff; }

.vk-layout { display: grid; grid-template-columns: 1fr 1.1fr; gap: 20px; align-items: start; }
.vk-results { display: flex; flex-direction: column; gap: 8px; }
.vk-result-row { display: flex; align-items: center; justify-content: space-between; gap: 12px; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius-sm); padding: 14px 18px; }
.vk-result-row--angle { border-left: 4px solid #e67e22; }
.vk-result-label { font-size: 0.8rem; font-weight: 600; color: var(--ink-soft); }
.vk-result-value { font-family: var(--font-mono); font-size: 1.05rem; font-weight: 700; color: var(--ink); word-break: break-all; text-align: right; }

.vk-visual { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius-lg); padding: 22px; }
.vk-card-head h2 { font-family: var(--font-display); font-size: 1.1rem; margin: 0 0 14px; }
.vk-visual canvas { width: 100%; height: auto; display: block; border-radius: var(--radius-md); background: var(--bg); border: 1px solid var(--line); }
.vk-legend { display: flex; gap: 16px; justify-content: center; margin-top: 12px; flex-wrap: wrap; }
.vk-legend span { font-size: 0.78rem; font-weight: 600; color: var(--ink-soft); display: flex; align-items: center; gap: 6px; }
.vk-dot { width: 10px; height: 10px; border-radius: 50%; display: inline-block; }
.vk-dot--a { background: var(--accent); }
.vk-dot--b { background: #0f9d94; }
.vk-dot--sum { background: #e67e22; }

@media (max-width: 900px) {
  .vk-inputs { grid-template-columns: 1fr; align-items: stretch; }
  .vk-dim-wrap { flex-direction: row; align-items: center; gap: 12px; }
  .vk-layout { grid-template-columns: 1fr; }
}
@media (max-width: 480px) {
  .vk-vec-fields { grid-template-columns: repeat(3, 1fr); }
}