:root{--paper:#f4f1e9;--ink:#172822;--muted:#647068;--line:#d7ddd2;--accent:#be471e;--dark:#152321;--panel:#1f302c;--white:#fffdf7;--soft:#e9e9dc;--green:#357556;--blue:#8cbed0;--radius:10px;font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;color:var(--ink);background:var(--paper);font-synthesis:none}
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.header-button{background:transparent;color:inherit;padding:7px;border:1px solid #40534c;border-radius:5px;font-size:12px}.qr-dialog{border:0;border-radius:10px;padding:28px;width:min(420px,calc(100vw - 32px));text-align:center;background:var(--white);color:var(--ink)}.qr-dialog::backdrop{background:#0b181dcc}.qr-dialog form{text-align:right;margin-bottom:20px}.qr-dialog h2{font-size:24px}.qr-dialog svg{display:block;width:100%;height:auto;max-width:300px;margin:auto}.qr-code{display:block;font-size:36px;letter-spacing:.2em;margin:16px 0}
.tool-demo{background:var(--white);padding:22px;border-top:3px solid var(--accent);margin:26px 0}.tool-demo h2{font-size:23px;margin:12px 0}.tool-demo p{font-size:14px}.assembly-rule{padding:15px 18px;background:#e4e7da;font-size:14px}.material-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}.material-card{text-align:left;display:flex;flex-direction:column;align-items:flex-start;gap:10px;background:var(--white);color:var(--ink);border:1px solid var(--line);border-radius:6px;padding:20px;min-width:0}.material-card .material-role{font-size:11px;color:var(--muted)}.material-card strong{font-size:18px}.material-purpose{font-size:13px;color:var(--green)}.material-body{font-size:13px;line-height:1.8;flex:1}.material-state{font-size:12px;padding-top:10px;border-top:1px solid var(--line);width:100%;font-weight:600}.material-card.selected{border-color:var(--green);box-shadow:inset 4px 0 var(--green)}.material-card.selected .material-state{color:var(--green)}.material-card:disabled{opacity:.8}.material-card.selected:disabled{opacity:1}.package-preview{padding:22px;background:var(--white);border-top:3px solid var(--green);margin:22px 0}.preview-heading{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:10px}.preview-heading h2{font-size:21px;margin:0}.preview-heading strong{font-size:14px;color:var(--green)}.package-preview dl{margin:0}.package-preview dt{font-size:13px;font-weight:600;margin:18px 0 5px}.package-preview dd{font-size:14px;line-height:1.8;margin:0;white-space:pre-wrap}.package-preview>div>p{font-size:14px;margin-top:18px}.evidence-review{display:grid;grid-template-columns:1fr 1fr;gap:20px;padding:18px;background:var(--white)}.evidence-review h3{font-size:15px}.evidence-review ul{padding-left:20px;margin:0;font-size:13px;line-height:1.9}
.preview-list{list-style:none;padding:0;margin:18px 0}.preview-list li{display:flex;flex-direction:column;gap:6px;padding:12px 0;border-top:1px solid var(--line);font-size:14px}.preview-list li span{font-size:12px;color:var(--muted)}
@media(max-width:600px){.material-grid,.evidence-review{grid-template-columns:1fr}.material-card{padding:18px}.tool-demo,.package-preview{padding:18px}.tool-demo .workboard td:first-child{white-space:nowrap}.material-card strong{font-size:17px}}
@media(prefers-reduced-motion:no-preference){.scene{animation:enter .25s ease-out}@keyframes enter{from{opacity:.6;transform:translateY(5px)}to{opacity:1;transform:translateY(0)}}}