/* Scoped to this batch; existing qualification and application styles stay intact. */
.calc-guide {--calc-ink:#173b35;--calc-green:#12665b;--calc-line:#cbded6;color:var(--calc-ink)}
.calc-guide p,.calc-guide li,.calc-guide label,.calc-guide summary,.calc-guide input,.calc-guide button,.calc-guide figcaption {font-size:16px;line-height:1.8}
.calc-guide p {overflow-wrap:anywhere}
.calc-guide h2 {margin-top:48px;line-height:1.5}
.calc-guide h3 {font-size:21px;line-height:1.55;scroll-margin-top:90px}
.calc-intro {border-left:5px solid var(--calc-green);padding:8px 0 8px 22px;margin:30px 0}
.calc-intro p {margin:8px 0}
.calc-steps {list-style:none;counter-reset:step;display:grid;grid-template-columns:repeat(3,1fr);gap:16px;padding:0!important;margin:24px 0}
.calc-steps li {counter-increment:step;border-top:2px solid var(--calc-line);padding-top:14px}
.calc-steps li::before {content:'0' counter(step);display:block;font-size:28px;line-height:1.2;font-weight:800;color:var(--calc-green);margin-bottom:10px}
.calc-steps strong {display:block;font-size:18px;margin-bottom:4px}
.calc-index {display:grid;grid-template-columns:1fr 1fr;gap:0 24px;list-style:none;padding:0!important;border-top:1px solid var(--calc-line)}
.calc-index li {border-bottom:1px solid var(--calc-line)}
.calc-index a {display:flex;gap:12px;padding:15px 0;text-decoration:none;align-items:baseline}
.calc-index span {color:var(--calc-green);font-weight:800;flex:0 0 24px}
.calc-exercise {margin:40px 0;padding:24px;border:1px solid var(--calc-line);border-radius:20px;background:#fff;box-shadow:0 6px 20px #153d3505;scroll-margin-top:90px}
.calc-exercise h3 {margin:6px 0 18px}
.calc-kicker {font-weight:800;color:var(--calc-green);letter-spacing:.06em;font-size:14px!important;margin:0}
.calc-form {border-top:1px solid var(--calc-line);padding-top:20px;margin-top:24px}
.calc-form[hidden] {display:none!important}
.calc-form label {font-weight:700;display:block;margin-bottom:8px}
.calc-input-row {display:flex;gap:12px;align-items:center;flex-wrap:wrap}
.calc-input-row input {font-family:inherit;width:160px;max-width:100%;min-height:48px;box-sizing:border-box;border:2px solid #91afa4;border-radius:9px;padding:8px 12px;background:#fff;color:#152e28;font-size:20px;font-variant-numeric:tabular-nums}
.calc-unit {font-size:16px;overflow-wrap:anywhere;flex:1 1 100px}
.calc-actions {display:flex;flex-wrap:wrap;gap:10px;margin-top:14px}
.calc-form button {font-family:inherit;border:1px solid var(--calc-green);border-radius:10px;padding:10px 18px;min-height:48px;font-weight:700;cursor:pointer;background:var(--calc-green);color:white}
.calc-form button[type=reset] {background:white;color:var(--calc-green)}
.calc-guide :focus-visible {outline:3px solid #d89930;outline-offset:4px}
.calc-input-row input[aria-invalid=true] {border-color:#a44724}
.calc-status {margin:14px 0 0;min-height:1.8em;font-weight:700;font-size:16px;line-height:1.65}
.calc-status.is-correct {color:#125c43}.calc-status.is-retry {color:#874226}
.calc-exercise details {border-top:1px solid var(--calc-line);margin-top:20px;padding-top:8px}
.calc-exercise summary {padding:12px 0;cursor:pointer;font-weight:700;color:var(--calc-green);min-height:48px;box-sizing:border-box}
.calc-solution {padding-top:8px}
.calc-answer {font-size:22px!important;font-weight:800;color:var(--calc-green)}
.calc-formula {font-size:18px!important;font-weight:700;padding:18px;background:#eff7f2;border-radius:10px}
.calc-pitfall {padding-left:14px;border-left:3px solid #d9a340}
.calc-figure {margin:24px 0;padding:18px;background:#f2f7f4;border-radius:14px;border:1px solid #dce7e1}
.calc-figure figcaption {font-weight:700;margin-bottom:16px}
.calc-figure svg {display:block;width:100%;max-width:420px;height:auto;margin:auto}
.calc-figure svg text {font-family:inherit}
.calc-figure p {margin-bottom:0;font-size:16px!important}
.calc-flow {display:grid;grid-template-columns:1fr 32px 1fr;gap:8px;align-items:center}
.calc-flow>div {border:1px solid #bed4c8;background:white;padding:16px 12px;border-radius:10px;overflow-wrap:anywhere;font-size:16px;line-height:1.7}
.calc-flow>span {text-align:center;font-size:25px;color:var(--calc-green)}
.calc-flow strong {display:block;font-size:18px}
.calc-branch {display:grid;gap:10px}.calc-branch>div {padding:12px;background:white;border-left:4px solid #78a98d;font-size:16px;line-height:1.7}
.calc-note {padding:18px 20px;background:#f5f6ee;border-radius:10px}
.calc-faq details {border-bottom:1px solid var(--calc-line);padding:14px 0}.calc-faq summary {font-weight:700;cursor:pointer}
.calc-date {font-size:16px!important;color:#526a60}
.calc-guide .srcbox p,.calc-guide .srcbox li {font-size:16px!important}
@media(max-width:600px){.calc-steps,.calc-index {grid-template-columns:1fr}.calc-steps {gap:12px}.calc-steps li {padding:12px 0 0 44px;position:relative}.calc-steps li::before {position:absolute;left:0;top:14px;font-size:24px}.calc-exercise {padding:18px 14px}.calc-guide h3 {font-size:20px}.calc-flow {grid-template-columns:1fr}.calc-flow>span {transform:rotate(90deg);line-height:1}.calc-figure {padding:12px;margin-left:0;margin-right:0}.calc-figure svg {min-width:0}.calc-guide .calc-formula {padding:14px}.calc-actions button {flex:1 1 100px}}
@media(prefers-reduced-motion:reduce){.calc-guide * {scroll-behavior:auto!important}}