:root{font-family:Inter,"Noto Sans TC",system-ui,sans-serif;color:#37352f;background:#faf9f6;font-synthesis:none}*{box-sizing:border-box}body{margin:0}button,a{-webkit-tap-highlight-color:transparent}button{font:inherit;color:inherit;border:1px solid #e5e4df;background:#fff;border-radius:7px;padding:11px 14px;min-height:44px;font-size:13px;font-weight:600;cursor:pointer}button:hover{background:#f4f3ef}button:disabled{opacity:.4;cursor:default}button:focus-visible,a:focus-visible,summary:focus-visible{outline:3px solid #2563eb;outline-offset:3px}[hidden]{display:none!important}header{max-width:1200px;margin:auto;padding:24px;display:flex;align-items:center;justify-content:space-between;gap:12px}header a{color:#37352f;text-decoration:none;font-weight:750}header small{font-size:11px;margin-left:8px;letter-spacing:2px}.back-link{font-size:13px;border:1px solid #e5e4df;padding:12px;border-radius:8px}main{max-width:1200px;margin:auto;padding:22px 24px 60px}.eyebrow{font-size:10px;letter-spacing:3px;font-weight:750;color:#8b877e}h1{font-size:38px;line-height:1.35;letter-spacing:-1px;margin:14px 0}p{font-size:14px;line-height:1.8;color:#787774}.practice-badge{display:inline-block;background:#efeee9;padding:8px 12px;border-radius:6px;font-size:12px}.workspace{display:grid;grid-template-columns:330px minmax(0,1fr);gap:24px;align-items:start;margin-top:28px}#tutorial-coach{position:sticky;top:20px;background:white;border:1px solid #e8e6df;border-radius:12px;padding:24px;color:#37352f}.coach-heading{display:flex;justify-content:space-between;align-items:center;gap:12px;font-size:12px;font-weight:700}.coach-heading button{border:0;background:#f5f4f0;font-size:12px}.coach-progress{display:flex;justify-content:space-between;gap:8px;font-size:11px;color:#787774;margin-top:18px}.coach-progress a{color:#787774}#coach-title{font-size:24px;line-height:1.4;margin:16px 0 10px}#coach-text{line-height:1.9;white-space:pre-line;font-size:13px;margin:0}#coach-actions{display:flex;flex-direction:column;gap:8px;margin-top:16px}#coach-actions button{text-align:left;overflow-wrap:anywhere}#coach-feedback{font-size:12px;line-height:1.7;color:#6b6250;margin:12px 0}.coach-nav{display:flex;gap:8px;padding-top:18px;border-top:1px solid #eeece6;margin-top:18px}.coach-nav button{flex:1}.coach-nav #coach-next{background:#37352f;color:#fff;border-color:#37352f}.coach-note{font-size:11px;line-height:1.7;margin:15px 0 0}.map-jump{display:block;color:#787774;text-decoration:none;font-size:12px;border-top:1px solid #eeece6;padding-top:14px;margin-top:16px}.map-card{background:#fff;border:1px solid #e8e6df;border-radius:12px;overflow:hidden;scroll-margin-top:16px}.map-heading{padding:18px;display:flex;justify-content:space-between;align-items:center;gap:10px}.map-heading strong{font-size:14px}.map-heading small{display:block;color:#787774;font-size:11px;margin-top:6px}.map-heading a,.map-footer a{font-size:12px;color:#787774}#tutorial-map{display:block;border:0;width:100%;height:720px;background:#e8eee7}.map-footer{display:flex;justify-content:space-between;gap:12px;font-size:11px;color:#787774;line-height:1.7;padding:14px 18px}.quick-guide{margin-top:40px;max-width:650px}.quick-guide h2{font-size:20px}.quick-guide h2 span{font-size:16px;color:#787774}details{border-bottom:1px solid #e5e4df;padding:15px 0}summary{font-size:14px;font-weight:600;cursor:pointer}.tutorial-focus{outline:3px solid #edbc45;outline-offset:3px}@media(min-width:0px){header{padding:16px}main{padding:12px 16px 40px}h1{font-size:30px}.intro p{font-size:13px}.workspace{display:flex;flex-direction:column;gap:18px;margin-top:24px}#tutorial-coach{position:relative;top:auto;width:100%;padding:22px 20px}#coach-title{font-size:23px}.map-card{width:100%;scroll-margin-top:8px}#tutorial-map{height:78dvh;min-height:580px;max-height:820px}.map-heading{padding:15px}.map-heading small{font-size:10px}.map-footer{flex-direction:column;gap:8px}.map-jump{font-size:13px;text-align:center;background:#f7f6f3;padding:13px;border:0;border-radius:6px}#tutorial-coach{scroll-margin-top:12px}}

/* Stack guidance above the real interface on desktop as well as phone. */
header,main{max-width:920px}.workspace,.map-card,#tutorial-coach{min-width:0}
@media(min-width:701px){header{padding:20px 24px}main{padding:16px 24px 48px}.intro h1{font-size:34px}#tutorial-coach{padding:24px}#tutorial-map{height:78dvh;min-height:580px;max-height:900px}.map-footer{flex-direction:row}.map-jump{max-width:360px}}