:root {
    --diag-ink: #173443;
    --diag-deep: #102733;
    --diag-teal: #27b7aa;
    --diag-teal-dark: #168f86;
    --diag-soft: #eaf8f6;
    --diag-paper: #fff;
    --diag-mist: #f4f7f7;
    --diag-line: #dce6e7;
    --diag-text: #304b58;
    --diag-muted: #647b85;
}

* { box-sizing: border-box; }
html { min-height: 100%; }
body { min-height: 100vh; margin: 0; color: var(--diag-text); background: linear-gradient(150deg, #f7fbfb, #edf7f6 55%, #fff); font-family: "DM Sans", Arial, sans-serif; line-height: 1.6; }
button, input { font: inherit; }
button { cursor: pointer; }
a { color: inherit; }
.diagnostic-shell { width: min(920px, calc(100% - 28px)); margin: 0 auto; padding: 30px 0 60px; }
.diagnostic-topbar { display: flex; align-items: center; justify-content: space-between; gap: 20px; margin-bottom: 32px; }
.diagnostic-brand { display: flex; align-items: center; gap: 14px; color: var(--diag-ink); font-weight: 700; text-decoration: none; }
.diagnostic-brand img { width: 180px; height: auto; }
.diagnostic-back { color: var(--diag-muted); font-size: .84rem; font-weight: 600; text-decoration: none; }
.diagnostic-card { overflow: hidden; border: 1px solid var(--diag-line); border-radius: 28px; background: rgba(255,255,255,.96); box-shadow: 0 28px 80px rgba(16,39,51,.13); }
.diagnostic-card__header { padding: 36px 42px 28px; border-bottom: 1px solid var(--diag-line); }
.diagnostic-kicker { margin: 0 0 13px; color: var(--diag-teal-dark); font-size: .73rem; font-weight: 700; letter-spacing: .15em; text-transform: uppercase; }
.diagnostic-title { margin: 0; color: var(--diag-ink); font-family: "Roboto Slab", Georgia, serif; font-size: clamp(2rem, 5vw, 3.55rem); line-height: 1.04; letter-spacing: -.025em; }
.diagnostic-intro { max-width: 700px; margin: 20px 0 0; color: var(--diag-muted); font-size: 1.04rem; }
.diagnostic-content { min-height: 440px; padding: 42px; }
body[data-diagnostic-screen="question"] .diagnostic-card__header { display: none; }
body[data-diagnostic-screen="question"] .diagnostic-content { display: grid; min-height: 560px; align-content: center; padding-inline: clamp(28px, 8vw, 88px); }
.diagnostic-start { display: grid; grid-template-columns: 1.15fr .85fr; align-items: center; gap: 45px; }
.diagnostic-start h2, .result-title { margin: 0 0 16px; color: var(--diag-ink); font-family: "Roboto Slab", Georgia, serif; font-size: clamp(1.7rem, 4vw, 2.65rem); line-height: 1.1; }
.diagnostic-points { margin: 26px 0; padding: 0; list-style: none; }
.diagnostic-points li { display: flex; gap: 12px; margin: 12px 0; }
.diagnostic-points li::before { content: "✓"; display: grid; width: 25px; height: 25px; flex: 0 0 25px; place-items: center; border-radius: 50%; color: var(--diag-teal-dark); background: var(--diag-soft); font-weight: 700; }
.start-panel { padding: 28px; border-radius: 20px; color: white; background: var(--diag-deep); }
.start-panel strong { display: block; margin-bottom: 8px; font-family: "Roboto Slab", Georgia, serif; font-size: 1.35rem; }
.start-panel p { margin: 0 0 22px; color: #bed0d5; }
.diag-button { display: inline-flex; min-height: 52px; align-items: center; justify-content: center; padding: 0 25px; border: 1px solid transparent; border-radius: 999px; color: white; background: var(--diag-teal-dark); font-weight: 700; transition: .2s ease; }
.diag-button:hover { background: var(--diag-teal); transform: translateY(-2px); }
.diag-button--light { color: var(--diag-ink); background: white; }
.diag-button--ghost { color: var(--diag-ink); border-color: var(--diag-line); background: white; }
.diag-button:disabled { opacity: .55; cursor: default; transform: none; }
.progress-meta { display: flex; justify-content: space-between; gap: 15px; margin-bottom: 10px; color: var(--diag-muted); font-size: .8rem; font-weight: 600; }
.progress-track { height: 7px; margin-bottom: 42px; overflow: hidden; border-radius: 99px; background: var(--diag-mist); }
.progress-value { height: 100%; border-radius: inherit; background: var(--diag-teal); transition: width .3s ease; }
.question-number { color: var(--diag-teal-dark); font-size: .76rem; font-weight: 700; letter-spacing: .12em; text-transform: uppercase; }
.question-text { max-width: 730px; margin: 12px 0 34px; color: var(--diag-ink); font-family: "Roboto Slab", Georgia, serif; font-size: clamp(1.55rem, 4vw, 2.35rem); line-height: 1.2; }
.answer-grid { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 14px; }
.answer-button { min-height: 72px; padding: 16px 22px; border: 1px solid var(--diag-line); border-radius: 16px; color: var(--diag-ink); background: white; font-size: 1.05rem; font-weight: 700; text-align: center; transition: .2s ease; }
.answer-button:hover, .answer-button.is-selected { border-color: var(--diag-teal); background: var(--diag-soft); box-shadow: 0 0 0 3px rgba(39,183,170,.08); }
.question-actions { display: flex; justify-content: space-between; gap: 15px; margin-top: 40px; }
.result-hero { display: grid; grid-template-columns: 190px 1fr; align-items: center; gap: 38px; margin-bottom: 38px; }
.score-block { display: grid; justify-items: center; gap: 10px; }
.score-ring { display: grid; width: 170px; height: 170px; place-items: center; border-radius: 50%; background: conic-gradient(var(--diag-teal) var(--score-angle), var(--diag-mist) 0); }
.score-ring::before { content: ""; grid-area: 1/1; width: 132px; height: 132px; border-radius: 50%; background: white; }
.score-ring__value { z-index: 1; grid-area: 1/1; color: var(--diag-ink); font-family: "Roboto Slab", Georgia, serif; font-size: 2.35rem; font-weight: 700; }
.score-caption { margin: 0; color: var(--diag-muted); font-size: .74rem; font-weight: 600; letter-spacing: .05em; text-align: center; text-transform: uppercase; }
.result-summary { margin: 0; color: var(--diag-muted); }
.result-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; }
.result-panel { padding: 25px; border: 1px solid var(--diag-line); border-radius: 18px; background: var(--diag-mist); }
.result-panel h3 { margin: 0 0 15px; color: var(--diag-ink); font-family: "Roboto Slab", Georgia, serif; font-size: 1.25rem; }
.result-list { margin: 0; padding: 0; list-style: none; }
.result-list li { margin: 12px 0; padding-left: 20px; position: relative; }
.result-list li::before { content: ""; position: absolute; top: .62em; left: 0; width: 7px; height: 7px; border-radius: 50%; background: var(--diag-teal); }
.result-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 30px; }
.diagnostic-note { margin: 24px 0 0; color: var(--diag-muted); font-size: .77rem; }
.diagnostic-footer { padding: 22px 42px; border-top: 1px solid var(--diag-line); color: var(--diag-muted); background: var(--diag-mist); font-size: .76rem; text-align: center; }

@media (max-width: 720px) {
    .diagnostic-shell { padding-top: 18px; }
    .diagnostic-topbar { align-items: flex-start; flex-direction: column; }
    .diagnostic-card__header, .diagnostic-content { padding: 28px 22px; }
    .diagnostic-start, .result-hero, .result-grid { grid-template-columns: 1fr; }
    .answer-grid { grid-template-columns: 1fr; }
    .score-ring { width: 145px; height: 145px; }
    .score-ring::before { width: 112px; height: 112px; }
    .diagnostic-footer { padding-inline: 22px; }
}