:root{font-family:PingFang SC,Microsoft YaHei,system-ui,sans-serif;color:#0e181b;background:#e7ebec;font-synthesis:none;--steel: #e7ebec;--paper: #f5f8f8;--ink: #0e181b;--muted: #4f6368;--line: #c6d0d2;--accent: #17505f;--signal: #b8431f;--signal-soft: #f3e4da;--metal: #6e7f84;--font-mono: ui-monospace, "SFMono-Regular", Consolas, "Liberation Mono", monospace}*{box-sizing:border-box}body{margin:0;min-width:320px;min-height:100vh}button,textarea{font:inherit}button,summary,a{-webkit-tap-highlight-color:transparent}button{cursor:pointer}a{color:inherit}button:focus-visible,a:focus-visible,summary:focus-visible,textarea:focus-visible{outline:3px solid var(--signal);outline-offset:3px}button:disabled,a[aria-disabled=true]{cursor:wait;opacity:.55;pointer-events:none}.icon-library{position:absolute;width:0;height:0;overflow:hidden}.icon{width:20px;height:20px;flex:0 0 auto;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.page-shell{min-height:100vh;display:grid;grid-template-columns:minmax(260px,330px) minmax(420px,510px);justify-content:center;align-items:center;gap:clamp(42px,6vw,88px);padding:56px 32px}.demo-context{align-self:center}.brand{display:flex;align-items:center;gap:12px;color:var(--ink);font-family:var(--font-mono);font-weight:700;font-size:17px;letter-spacing:.03em}.brand-mark{display:grid;place-items:center;width:40px;height:34px;color:var(--paper);background:var(--ink);border-left:4px solid var(--signal);font-size:13px}.context-edition{margin:24px 0 0;color:var(--accent);font-size:16px;font-weight:650;line-height:1.6}.context-copy{max-width:29em;margin:18px 0 0;color:var(--muted);font-size:14px;line-height:1.9}.context-notes{margin-top:28px;padding-block:8px;border-block:1px solid var(--line)}.context-notes p{position:relative;margin:12px 0;padding-left:17px;color:var(--muted);font-size:13px;line-height:1.65}.context-notes p:before{content:"";position:absolute;left:0;top:.65em;width:7px;height:3px;background:var(--metal)}.prototype-label{margin:20px 0 0;color:var(--muted);font-size:12px}.card-stage{width:100%}.business-card{overflow:hidden;background:var(--paper);border:1px solid rgba(14,24,27,.16);border-radius:12px;box-shadow:0 18px 42px #0e181b12;animation:card-arrival .45s ease-out both}.shipping-mark{display:flex;justify-content:space-between;gap:16px;padding:11px 22px 10px 18px;color:#e9ede8;background:var(--ink);border-left:5px solid var(--signal);font-family:var(--font-mono);font-size:10px;line-height:1.5;letter-spacing:.03em}.card-top{position:relative;padding:29px 30px 30px}.identity-row{display:grid;grid-template-columns:60px 1fr;gap:17px;align-items:center}.avatar{display:grid;place-items:center;width:60px;height:60px;color:var(--paper);background:var(--accent);border-radius:50%;font-size:27px;font-weight:700}.industry{margin:0 0 5px;color:var(--muted);font-size:12px}.identity-copy h1{margin:0;font-size:32px;font-weight:750;letter-spacing:.02em;line-height:1.25}.role{margin:7px 0 0;color:var(--accent);font-family:var(--font-mono);font-size:11px;line-height:1.6}.scenario-block{margin-top:28px;padding-top:25px;border-top:1px solid var(--line)}.scenario-lead{margin:0 0 11px;color:var(--signal);font-size:13px;font-weight:650}.scenario-block h2{margin:0;max-width:430px;font-size:clamp(24px,3vw,30px);font-weight:650;line-height:1.55;letter-spacing:-.025em}.scenario-end{margin:17px 0 0;color:var(--muted);font-size:14px;line-height:1.85}.card-body{padding:0 30px}.primary-actions{display:grid;grid-template-columns:1.35fr 1fr;gap:10px}.button{min-height:50px;display:inline-flex;align-items:center;justify-content:center;gap:9px;border-radius:7px;border:1px solid transparent;padding:12px 16px;font-weight:650;font-size:14px;line-height:1.4;text-decoration:none;transition:background-color .18s ease,transform .18s ease}.button:active{transform:translateY(1px)}.button-primary{color:#fff;background:var(--accent)}.button-primary:hover{background:#103f4b}.button-secondary{color:var(--accent);background:transparent;border-color:var(--line)}.button-secondary:hover{background:#e7eef0}.action-caption{margin:11px 0 0;color:var(--muted);font-size:12px;line-height:1.7;text-align:center}.action-caption a{font-family:var(--font-mono);font-weight:700;text-decoration:none;white-space:nowrap}.utility-actions{display:flex;justify-content:center;gap:24px;padding:14px 0 21px;border-bottom:1px solid var(--line)}.utility-actions 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0 0;padding:13px 14px;color:var(--muted);background:#e9eff0;border-left:3px solid var(--metal);font-size:13px;line-height:1.75}.deliverables strong{color:var(--ink)}.case-details{margin-top:12px}.case-details summary,.encounter-details>summary{display:flex;align-items:center;justify-content:space-between;gap:12px;min-height:46px;color:var(--accent);font-size:13px;font-weight:650;cursor:pointer;list-style:none}.case-details summary::-webkit-details-marker,.encounter-details>summary::-webkit-details-marker{display:none}.case-details summary .icon,.encounter-details>summary>.icon{width:17px;height:17px;transition:transform .18s ease}.case-details[open] summary .icon,.encounter-details[open]>summary>.icon{transform:rotate(180deg)}.case-content{padding:3px 0 4px;color:var(--muted);font-size:13px;line-height:1.8}.case-content ol{margin:0;padding-left:1.4em}.case-content li{margin:8px 0;padding-left:3px}.case-content strong{color:var(--ink)}.case-content .boundary-note{margin:15px 0 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22px;color:var(--muted);font-size:13px;line-height:1.8}.save-options{display:grid;gap:10px}.save-option{display:flex;align-items:center;gap:14px;width:100%;min-height:76px;padding:15px;color:var(--accent);background:#fff;border:1px solid var(--line);border-radius:7px;text-align:left;text-decoration:none}.save-option:hover{border-color:var(--accent);background:#edf3f4}.save-option>.icon{width:23px;height:23px}.save-option span{display:grid;gap:5px}.save-option strong{font-size:14px}.save-option small{color:var(--muted);font-size:12px;line-height:1.5}.dialog-note{margin:18px 0 0;color:var(--muted);font-size:12px;line-height:1.7}.qr-sheet{text-align:center}.qr-sheet h2{margin-right:0}.qr-frame{width:fit-content;margin:0 auto;padding:12px;border:1px solid var(--line);background:#fff}#qr-image{display:block;width:min(62vw,250px);height:min(62vw,250px)}#qr-image[hidden],#download-qr[hidden],#download-card[hidden]{display:none}.qr-url{max-width:100%;margin:15px auto 0;color:var(--muted);font-family:var(--font-mono);font-size:11px;overflow-wrap:anywhere}.qr-actions{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:18px}.offline-card-action{grid-column:1 / -1}.toast{position:fixed;z-index:20;left:50%;bottom:calc(24px + env(safe-area-inset-bottom));max-width:calc(100% - 32px);padding:12px 18px;color:#fff;background:var(--ink);box-shadow:0 8px 26px #0e181b2e;border-radius:7px;font-size:13px;line-height:1.6;text-align:center;opacity:0;pointer-events:none;transform:translate(-50%,12px);transition:opacity .18s ease,transform .18s ease}.toast.visible{opacity:1;transform:translate(-50%)}@keyframes card-arrival{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}@keyframes sheet-arrival{0%{opacity:0;transform:translateY(6px)}to{opacity:1;transform:translateY(0)}}@media(max-width:900px){.page-shell{display:block;max-width:540px;margin:0 auto;padding:24px 16px calc(34px + env(safe-area-inset-bottom))}.demo-context{margin:0 4px 22px}.brand{font-size:14px}.brand-mark{width:34px;height:30px;font-size:12px}.context-edition{margin-top:12px;font-size:13px}.context-copy,.context-notes,.prototype-label{display:none}}@media(max-width:480px){.page-shell{padding:14px 10px calc(24px + env(safe-area-inset-bottom))}.demo-context{margin-bottom:13px}.business-card{border-radius:9px}.shipping-mark{gap:10px;padding-inline:14px;font-size:10px}.card-top{padding:24px 22px 25px}.identity-row{grid-template-columns:52px 1fr;gap:13px}.avatar{width:52px;height:52px;font-size:24px}.identity-copy h1{font-size:28px}.role{font-size:11px}.scenario-block{margin-top:23px;padding-top:22px}.scenario-block h2{font-size:clamp(22px,6.2vw,27px)}.scenario-end{font-size:13px}.card-body{padding:0 22px}.primary-actions{grid-template-columns:1fr}.button{font-size:14px}.utility-actions{gap:20px}.card-footer{margin:0 -22px;padding:18px 22px 20px}.sheet{padding:27px 21px 22px}}@media(max-width:350px){.shipping-mark{flex-direction:column;gap:2px}.card-top,.card-body{padding-inline:18px}.card-footer{margin-inline:-18px}.role{font-size:11px}.qr-actions{grid-template-columns:1fr}}@media(prefers-reduced-motion:reduce){*,*:before,*:after{scroll-behavior:auto!important;animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}}@media print{body,.page-shell{background:#fff}.page-shell{display:block;padding:0}.demo-context,.primary-actions,.action-caption,.utility-actions,.case-details,.encounter-details,.text-action,.sheet,.toast{display:none!important}.business-card{max-width:105mm;margin:0 auto;border:1px solid #777;box-shadow:none;animation:none}.card-footer{background:#fff}}