.diagnostic-page { background: var(--cream); }
.diagnostic-intro { padding: 72px 0 64px; color: white; background: var(--green); }
.diagnostic-intro .eyebrow { color: #f2c6a8; }
.diagnostic-title-row { display: grid; grid-template-columns: 1.25fr .75fr; gap: clamp(48px, 8vw, 110px); align-items: end; }
.diagnostic-intro h1 { max-width: 820px; margin: 0; font-size: clamp(3.25rem, 6.3vw, 6.35rem); }
.diagnostic-title-row > p { max-width: 520px; margin: 0 0 8px; color: rgba(255,255,255,.74); font-size: 1.04rem; }
.diagnostic-workspace { padding-block: 86px 100px; }
.diagnostic-chooser { display: grid; grid-template-columns: .36fr .64fr; gap: clamp(44px, 7vw, 96px); margin-bottom: 38px; align-items: start; }
.diagnostic-chooser h2 { font-size: clamp(2.25rem, 3.8vw, 3.7rem); }
.diagnostic-chooser > div:first-child > p:last-child { max-width: 390px; color: var(--muted); }
.diagnostic-options { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); border-top: 1px solid var(--line); border-left: 1px solid var(--line); }
.diagnostic-option { min-height: 142px; display: grid; grid-template-columns: 42px 1fr; gap: 7px 15px; align-content: center; padding: 22px; border: 0; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); color: var(--ink); background: white; text-align: left; cursor: pointer; }
.diagnostic-option > span { grid-row: 1 / span 2; color: var(--terracotta); font-size: .72rem; font-weight: 800; letter-spacing: .1em; }
.diagnostic-option strong { align-self: end; font: 700 1rem/1.25 Manrope, Arial, sans-serif; }
.diagnostic-option small { color: var(--muted); font-size: .78rem; }
.diagnostic-option:hover { background: var(--sand); }
.diagnostic-option[aria-pressed="true"] { color: white; background: var(--green); }
.diagnostic-option[aria-pressed="true"] > span, .diagnostic-option[aria-pressed="true"] small { color: #f2c6a8; }
.diagnostic-panel { display: grid; grid-template-columns: .42fr .58fr; min-height: 610px; border: 1px solid var(--line); background: white; }
.diagnostic-panel[hidden] { display: none; }
.diagnostic-image { min-height: 100%; overflow: hidden; background: var(--sand); }
.diagnostic-image picture { display: block; height: 100%; }
.diagnostic-image img { width: 100%; height: 100%; object-fit: cover; }
.diagnostic-result { display: flex; flex-direction: column; padding: clamp(34px, 5vw, 66px); }
.diagnostic-result h2 { max-width: 650px; margin-bottom: 34px; font-size: clamp(2rem, 3.25vw, 3.25rem); }
.diagnostic-explanation { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); border-top: 1px solid var(--line); border-left: 1px solid var(--line); }
.diagnostic-explanation section { padding: 23px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.diagnostic-explanation section:last-child { grid-column: 1 / -1; }
.diagnostic-explanation h3 { margin: 0 0 10px; color: var(--terracotta); font-size: .82rem; letter-spacing: .05em; text-transform: uppercase; }
.diagnostic-explanation p, .diagnostic-explanation li { color: var(--muted); font-size: .86rem; line-height: 1.6; }
.diagnostic-explanation p { margin: 0; }
.diagnostic-explanation ul { columns: 2; gap: 28px; margin: 0; padding-left: 18px; }
.diagnostic-explanation li { break-inside: avoid; margin-bottom: 6px; }
.diagnostic-warning { background: #fbf3ed; }
.diagnostic-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 20px; margin-top: auto; padding-top: 30px; }
.diagnostic-actions > a:not(.button) { color: var(--terracotta); font-size: .86rem; font-weight: 800; text-decoration: underline; text-underline-offset: 4px; }
.diagnostic-safety { padding-block: 36px; color: white; background: var(--terracotta); }
.diagnostic-safety .wrap { display: grid; grid-template-columns: .3fr .7fr; gap: 44px; align-items: center; }
.diagnostic-safety strong { font: 800 1.12rem/1.3 Manrope, Arial, sans-serif; }
.diagnostic-safety p { max-width: 760px; margin: 0; color: rgba(255,255,255,.84); }
.diagnostic-sources { padding-block: 82px; }
.diagnostic-sources h2 { margin-bottom: 30px; font-size: clamp(2rem, 3vw, 3rem); }
.diagnostic-sources ul { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0; margin: 0 0 24px; padding: 0; border-top: 1px solid var(--line); list-style: none; }
.diagnostic-sources li { padding: 18px 0; border-bottom: 1px solid var(--line); }
.diagnostic-sources li:nth-child(odd) { padding-right: 24px; }
.diagnostic-sources a { color: var(--terracotta); font-size: .86rem; font-weight: 800; }
.diagnostic-sources p { max-width: 820px; margin: 0; color: var(--muted); font-size: .86rem; }

@media (max-width: 980px) {
  .diagnostic-title-row, .diagnostic-chooser, .diagnostic-panel { grid-template-columns: 1fr; }
  .diagnostic-title-row { gap: 28px; }
  .diagnostic-chooser { gap: 36px; }
  .diagnostic-panel { min-height: 0; }
  .diagnostic-image { min-height: 390px; }
  .diagnostic-actions { margin-top: 0; }
}

@media (max-width: 680px) {
  .diagnostic-intro { padding: 52px 0; }
  .diagnostic-intro h1 { font-size: clamp(2.65rem, 12vw, 4rem); }
  html[lang="ru"] .diagnostic-intro h1 { font-size: clamp(2.25rem, 10vw, 3.25rem); }
  .diagnostic-workspace { padding-block: 66px 72px; }
  .diagnostic-options { grid-template-columns: 1fr; }
  .diagnostic-option { min-height: 118px; }
  .diagnostic-image { min-height: 280px; }
  .diagnostic-result { padding: 28px 22px; }
  .diagnostic-explanation { grid-template-columns: 1fr; }
  .diagnostic-explanation section:last-child { grid-column: auto; }
  .diagnostic-explanation ul { columns: 1; }
  .diagnostic-actions { align-items: stretch; flex-direction: column; }
  .diagnostic-actions .button { width: 100%; }
  .diagnostic-safety .wrap, .diagnostic-sources ul { grid-template-columns: 1fr; }
  .diagnostic-safety .wrap { gap: 12px; }
  .diagnostic-sources li:nth-child(odd) { padding-right: 0; }
}

@media (prefers-reduced-motion: reduce) {
  .diagnostic-option { scroll-behavior: auto; }
}