/* 特集入口：現行サイトの青・黄を継承し、機器選択と準備を中心にする。 */
.erase-guide { --guide-blue: #1867c0; --guide-pale: #edf6fc; max-width: 800px; margin: auto; }
.erase-guide a { color: #145da6; text-underline-offset: 4px; }
.erase-guide :is(a,summary,input):focus-visible { outline: 3px solid #b91c37; outline-offset: 5px; }
.erase-guide :is(section,details) { scroll-margin-top: 84px; }
.erase-hero { background: var(--guide-pale); padding: 40px 40px 36px; border-top: 5px solid var(--guide-blue); }
.erase-kicker { color: #145da6; font-weight: 700; margin-bottom: 8px; }
.erase-hero h1 { font-size: clamp(27px,5vw,40px); line-height: 1.35; letter-spacing: -.03em; font-weight: 900; }
.erase-catch { font-size: clamp(22px,4vw,30px); font-weight: 900; line-height: 1.5; margin: 25px 0 14px; }
.erase-hero > p:not(.erase-kicker):not(.erase-catch) { line-height: 1.9; }
.erase-guide .erase-primary { display: inline-flex; justify-content: center; align-items: center; background: #ffe400; border: 1px solid #dfc800; color: #332f00; padding: 16px 23px; border-radius: 5px; font-weight: 900; text-decoration: none; margin-top: 25px; }
.erase-primary:hover { background: #fff063; }
.erase-text-link { display: block; margin-top: 16px; font-size: 14px; }
.erase-content { padding: 0 40px; }
.erase-section { margin: 48px 0; }
.erase-guide h2 { font-size: 25px; line-height: 1.5; font-weight: 900; letter-spacing: -.02em; }
.section-intro { margin: 10px 0 24px; line-height: 1.8; }
.device-group { margin: 28px 0; }
.device-group h3 { display: flex; align-items: center; gap: 10px; color: #145da6; font-size: 18px; margin-bottom: 10px; }
.device-group h3 svg { width: 35px; height: 35px; flex-shrink: 0; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.device { border-bottom: 1px solid #cbd7e3; }
.device:first-of-type { border-top: 1px solid #cbd7e3; }
.device summary { display: flex; justify-content: space-between; align-items: center; gap: 16px; padding: 19px 8px; cursor: pointer; list-style: none; }
.device summary::-webkit-details-marker { display: none; }
.device summary:hover { background: #f2f7fc; }
.device summary strong { font-size: 18px; line-height: 1.6; }
.device-lead { display: block; font-size: 13px; color: #536272; margin-top: 4px; }
.toggle { width: 24px; height: 24px; position: relative; flex-shrink: 0; }
.toggle::before,.toggle::after { content: ''; position: absolute; width: 14px; height: 2px; background: #1867c0; left: 5px; top: 11px; }
.toggle::after { transform: rotate(90deg); }
.device[open] .toggle::after { transform: none; }
.device[open] summary { color: #145da6; }
.device-body { padding: 2px 12px 24px; line-height: 1.95; }
.device-note { margin-top: 14px; padding-left: 14px; border-left: 3px solid #dacb62; }
.official-links { display: grid; gap: 8px; margin-top: 20px; }
.official-links a { font-size: 14px; }
.external-label { display: inline-block; margin-left: 8px; font-size: 11px; color: #596676; text-decoration: none; }
.erase-small { font-size: 13px; color: #536272; line-height: 1.8; margin-top: 18px; }
.preparation { background: #f4f8fb; padding: 28px; }
.prep-checks label { display: flex; align-items: flex-start; gap: 13px; padding: 17px 0; border-bottom: 1px solid #d4dee8; cursor: pointer; }
.prep-checks input { width: 23px; height: 23px; flex-shrink: 0; margin-top: 3px; accent-color: #1867c0; }
.prep-checks strong { font-size: 16px; line-height: 1.7; }
.prep-checks small { display: block; margin-top: 6px; font-size: 13px; line-height: 1.8; color: #536272; }
.prep-checks label:has(input:checked) strong { color: #145da6; }
.prep-status { margin-top: 20px; color: #145da6; font-weight: 700; }
.two-checks { display: grid; grid-template-columns: 1fr 1fr; gap: 25px; margin-top: 22px; }
.two-checks > div { border-top: 3px solid #1867c0; padding-top: 16px; }
.two-checks h3 { font-size: 17px; margin-bottom: 10px; }
.two-checks p { font-size: 14px; line-height: 1.9; }
.erase-help { border-left: 5px solid #d61439; background: #fff8f8; padding: 24px; }
.erase-help h2 { font-size: 22px; margin-bottom: 14px; }
.erase-help p { font-size: 14px; line-height: 1.9; }
.erase-faq details { border-bottom: 1px solid #d4dee8; }
.erase-faq summary { padding: 20px 0; cursor: pointer; font-weight: 700; }
.erase-faq details p { padding-bottom: 22px; font-size: 14px; line-height: 1.9; }
.erase-end { background: #edf6fc; padding: 30px; text-align: center; }
.erase-end h2 { font-size: 22px; }
.erase-end p { font-size: 14px; margin-top: 12px; }
.erase-review { font-size: 12px; color: #536272; margin: 26px 0 40px; line-height: 1.9; }
.mobile-break { display: none; }
@media(max-width: 600px) { .erase-hero { padding: 30px 22px; } .erase-content { padding: 0 20px; } .erase-guide h2 { font-size: 22px; } .erase-section { margin: 36px 0; } .preparation { padding: 23px 18px; margin-left: -6px; margin-right: -6px; } .two-checks { grid-template-columns: 1fr; } .device summary strong { font-size: 16px; } .device-group h3 { font-size: 16px; } .device summary { padding: 17px 4px; } .erase-end { padding: 25px 17px; } .erase-end h2 { font-size: 20px; } .erase-guide .erase-primary { font-size: 15px; padding: 16px; } .mobile-break { display: initial; } }
@media(prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

/* 挿絵と図解。画像内の文字に頼らず、説明は本文側で補う。 */
.erase-hero-image { width: 100%; height: auto; margin-top: 24px; border-radius: 8px; }
.erase-figure { margin: 24px 0; background: #fff; border-radius: 8px; overflow: hidden; }
.erase-figure img { width: 100%; height: auto; }
.erase-figure figcaption { padding: 12px 14px 18px; text-align: center; color: #145da6; font-size: 14px; font-weight: 700; }
.erase-figure .erase-figure-pair { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; font-size: 13px; }
@media (min-width: 601px) { .erase-hero-image { max-width: 560px; margin-left: auto; margin-right: auto; } }