:root{color-scheme:light;--ink:#172c42;--blue:#1756a9;--muted:#506176;--line:#dce4ed;--paper:#f4f7fb}*{box-sizing:border-box}body{margin:0;background:var(--paper);color:var(--ink);font-family:system-ui,-apple-system,"Noto Sans JP",Meiryo,sans-serif;line-height:1.8}a{color:var(--blue)}.guide-wrap{width:min(1060px,100% - 32px);margin:0 auto}.guide-header{padding:24px 0 28px}.brand{font-size:15px;font-weight:700;text-decoration:none}.eyebrow{margin:28px 0 6px;font-size:13px;letter-spacing:.1em;color:var(--muted);font-weight:700}h1{font-size:clamp(28px,5vw,44px);line-height:1.4;margin:0 0 14px}.intro{max-width:760px;margin:0;color:var(--muted)}.video-panel{background:white;border:1px solid var(--line);border-radius:20px;overflow:hidden;box-shadow:0 8px 30px #1835520a}video{display:block;width:100%;height:auto;aspect-ratio:16/9;background:#172c42}.video-info{padding:18px 24px}.video-meta{display:flex;flex-wrap:wrap;gap:8px 22px;color:var(--muted);font-size:14px;margin:0 0 10px}.video-info p{margin:8px 0}.links{display:flex;flex-wrap:wrap;gap:12px 24px;font-size:15px}.section{padding:24px 28px;background:white;border:1px solid var(--line);border-radius:18px;margin-top:24px}.section h2{font-size:22px;line-height:1.5;margin:0 0 12px}.section p{margin:0 0 12px}.points{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px 26px;margin:0;padding-left:22px;color:var(--muted)}.guide-footer{padding:38px 0 20px}.trial-banner{position:relative;border-radius:22px;background:linear-gradient(120deg,#173952,#245d83);color:white;padding:32px;box-shadow:0 8px 25px #1835520c}.trial-banner .eyebrow{color:#c9ddec;margin:0 0 10px}.trial-banner h2{font-size:clamp(23px,4vw,30px);line-height:1.5;margin:0 0 12px}.trial-banner p{max-width:730px;margin:0 0 22px;color:#edf5fb}.trial-link{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:12px 24px;background:#fff4d8;color:#173952;border-radius:10px;text-decoration:none;font-weight:700}.trial-link:hover{background:#fff9eb}.share-panel{margin-top:24px;padding:26px 28px;border:1px solid var(--line);background:white;border-radius:18px}.share-panel h2{font-size:21px;margin:0 0 5px}.share-panel p{color:var(--muted);margin:0 0 16px}.share-actions{display:flex;flex-wrap:wrap;gap:10px}.share-actions a,.share-actions button{font:inherit;font-weight:700;min-height:48px;padding:10px 20px;border:1px solid #c9d5e4;border-radius:9px;background:#f4f7fb;color:var(--ink);text-decoration:none;cursor:pointer}.share-actions .line-share{background:#06c755;border-color:#06c755;color:#fff}.share-actions button:hover{background:#eaf0f8}#shareStatus{font-size:14px;min-height:25px;margin:12px 0 0;color:var(--blue)}#manualCopy{display:block;margin-top:12px;font-size:14px}#manualCopy[hidden]{display:none}#shareUrl{display:block;width:100%;margin-top:6px;padding:12px;border:1px solid #a5b8cf;border-radius:7px;font:inherit;background:white;color:var(--ink)}.credits{font-size:13px;color:var(--muted);padding:26px 3px 20px}.credits p{margin:3px 0}a:focus-visible,button:focus-visible,input:focus-visible{outline:3px solid #e79d24;outline-offset:4px}@media(max-width:600px){.guide-wrap{width:calc(100% - 24px)}.guide-header{padding:20px 0}.eyebrow{margin-top:22px}.video-info{padding:16px}.section,.share-panel{padding:22px 20px}.points{grid-template-columns:1fr}.trial-banner{padding:26px 22px}.trial-link{width:100%;padding:12px 14px;text-align:center}.share-actions{display:grid;grid-template-columns:1fr 1fr}.share-actions a,.share-actions button{text-align:center;padding:10px 12px}.share-actions button:last-child{grid-column:1/-1}.links{gap:9px 18px}.guide-footer{padding-top:26px}}