:root{--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light;--bg:#f6f7f4;--surface:#fff;--surface-strong:#eef3f0;--ink:#17211d;--muted:#62716b;--line:#d8ded8;--primary:#176b57;--primary-strong:#0f4d3e;--accent:#b8562f;--danger:#b3261e;--warning-bg:#fff3d7;--shadow:0 18px 50px #1c2b241f}*{box-sizing:border-box}[hidden]{display:none!important}html{background:var(--bg);min-height:100%}body{min-height:100%;color:var(--ink);background:linear-gradient(180deg, #ffffffb8, #f6f7f4fa), var(--bg);margin:0;font-family:Arial,Hiragino Kaku Gothic ProN,Yu Gothic,Meiryo,sans-serif}button,input{font:inherit}button{cursor:pointer;border:0;border-radius:8px;min-height:44px}button:disabled,input:disabled{cursor:not-allowed;opacity:.58}.viewer-shell{background:linear-gradient(180deg, #fff 0%, #f3f6f4 52%, #e9efeb 100%), var(--bg);min-height:100vh}.app-toast{z-index:20;min-width:min(360px,100% - 32px);color:var(--ink);text-align:center;background:#fff;border:1px solid #d8ded8f2;border-radius:8px;padding:13px 18px;font-size:14px;font-weight:800;animation:.26s ease-out toast-drop;position:fixed;top:14px;left:50%;transform:translate(-50%);box-shadow:0 14px 34px #1c2b242e}.app-toast.warning{background:var(--warning-bg);color:#6c4410}.app-toast.error{color:var(--danger);background:#fdebea}@keyframes toast-drop{0%{opacity:0;transform:translate(-50%,-18px)}to{opacity:1;transform:translate(-50%)}}.viewer-header{z-index:5;border-bottom:1px solid var(--line);background:#fffffff5;grid-template-columns:minmax(170px,1fr) auto minmax(300px,420px) auto;align-items:center;gap:16px;min-height:72px;padding:12px clamp(16px,3vw,32px);display:grid;position:sticky;top:0;box-shadow:0 8px 28px #1c2b2414}.viewer-header-title{gap:3px;min-width:0;display:grid}.viewer-header-title strong{font-size:18px;line-height:1.25}.viewer-header-title span{color:var(--muted);font-size:13px;line-height:1.5}.viewer-mode-switch{background:var(--surface-strong);border-radius:8px;grid-template-columns:1fr 1fr;gap:5px;padding:4px;display:grid}.viewer-mode-switch button{width:auto;min-height:40px;color:var(--muted);white-space:nowrap;background:0 0;padding:0 14px;font-size:13px;font-weight:800}.viewer-mode-switch button.active{color:#fff;background:var(--primary)}.viewer-screen{background:0 0;place-items:start center;min-height:calc(100vh - 72px);padding:clamp(18px,3vw,36px);display:grid;position:relative}.viewer-stage-card{border:1px solid var(--line);background:#fff;border-radius:8px;place-items:center;width:min(1180px,100%);min-height:min(680px,100vh - 144px);display:grid;overflow:hidden;box-shadow:0 18px 44px #1c2b2421}.viewer-stage-card.has-media{min-height:0;display:block}.viewer-video{object-fit:contain;background:#fff;width:100%;height:auto;max-height:calc(100vh - 144px);display:block}.viewer-empty{width:min(420px,100% - 40px);color:var(--muted);text-align:center;gap:8px;padding:24px;line-height:1.7;display:grid}.viewer-empty strong{color:var(--ink);font-size:22px;line-height:1.35}.viewer-connect{grid-template-columns:auto minmax(0,1fr);align-items:center;gap:8px 10px;min-width:0;display:grid}.viewer-connect label{color:var(--ink);font-size:13px;font-weight:800}.viewer-connect-row{grid-template-columns:minmax(0,1fr) 72px;gap:8px;display:grid}.viewer-word-input{border:1px solid var(--line);min-width:0;height:40px;color:var(--ink);background:#fff;border-radius:8px;padding:0 10px;font-size:18px;font-weight:800}.viewer-word-input:focus{border-color:var(--primary);outline:3px solid #176b5733}.viewer-connect-row button{color:#fff;background:var(--primary);min-height:40px;font-weight:800}.viewer-message{color:var(--ink);grid-column:2;font-size:12px;line-height:1.5}.viewer-message.error{color:var(--danger)}.viewer-message.warning{color:#6c4410}.viewer-end-button{width:auto;min-height:40px;color:var(--danger);background:#fdebea;padding:0 14px;font-size:13px;font-weight:800}.viewer-header-actions{min-width:72px}.viewer-share-url{border-top:1px solid var(--line);grid-column:1/-1;grid-template-columns:auto minmax(0,1fr) auto;align-items:center;gap:10px;padding-top:10px;display:grid}.viewer-share-url span{color:var(--muted);white-space:nowrap;font-size:12px;font-weight:800}.viewer-share-url code{min-width:0;color:var(--primary-strong);text-overflow:ellipsis;white-space:nowrap;font-size:12px;line-height:1.45;overflow:hidden}.viewer-share-url button{min-height:34px;color:var(--primary-strong);background:var(--surface-strong);border:1px solid var(--line);padding:0 12px;font-size:12px;font-weight:800}.viewer-share-url button.copied{color:#fff;background:var(--primary);border-color:var(--primary)}@media (max-width:860px){.viewer-header{grid-template-columns:1fr;align-items:stretch;position:relative}.viewer-mode-switch{width:min(260px,100%)}}@media (max-width:520px){.viewer-connect{grid-template-columns:1fr}.viewer-message{grid-column:1}.viewer-share-url{grid-template-columns:1fr auto}.viewer-share-url span{grid-column:1/-1}.viewer-video{max-height:calc(100vh - 220px)}}