.tool-page { padding-block: 3.2rem 5rem; }
.tool-page h1 { font-size: clamp(2.15rem, 7vw, 3.8rem); }
.quick-facts { display: flex; flex-wrap: wrap; gap: .55rem; margin: 1rem 0 1.5rem; }
.quick-facts span { padding: .4rem .65rem; border-radius: 999px; background: var(--blue-soft); color: #4266a9; font-size: .84rem; font-weight: 800; }
.tool-step { margin-block: 1.35rem; padding: 1.3rem; border: 1px solid var(--line); border-radius: 1.2rem; background: var(--surface); box-shadow: 0 10px 28px rgba(31,83,74,.07); }
.tool-step h2 { margin-top: 0; font-size: 1.28rem; }
.form-help { color: var(--muted); font-size: .93rem; }
.field { display: grid; gap: .35rem; font-weight: 700; }
.field input { width: 100%; min-height: 50px; padding: .8rem .9rem; border: 1px solid #cbded8; border-radius: .8rem; background: #fbfefd; color: var(--text); font: inherit; }
.field input:focus { border-color: var(--accent); box-shadow: 0 0 0 4px rgba(28,139,124,.10); outline: none; }
.field-error { min-height: 1.4em; margin: .35rem 0 0; color: #a33124; font-weight: 700; }
.result-card { margin-top: 2rem; padding: 1.55rem; border: 1px solid #b8ccef; border-radius: 1.25rem; background: linear-gradient(145deg, #fbfdff, #eef4ff); box-shadow: 0 16px 38px rgba(55,82,132,.10); }
.result-card h2 { margin: .2rem 0; font-size: clamp(1.7rem, 6vw, 2.5rem); color: #4266a9; }
.result-explanation { font-size: 1.06rem; }
.result-actions { margin-top: 1.25rem; }
.decoder-reference { margin-top: 2.4rem; }
.reference-list { display: grid; gap: .75rem; }
.reference-list div { display: grid; grid-template-columns: minmax(110px,.35fr) 1fr; gap: .8rem; padding: .95rem 1rem; border: 1px solid var(--line); border-radius: .9rem; background: var(--surface); }
.reference-list dt { font-weight: 850; color: var(--accent-strong); }
.reference-list dd { margin: 0; color: var(--muted); }
@media (max-width: 560px) { .reference-list div { grid-template-columns: 1fr; gap: .2rem; } }