:root{font:16px/1.55 -apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color-scheme:light;--bg:#f5f7f1;--panel:#fff;--ink:#243322;--muted:#53614e;--line:#d4ddcc;--soft:#edf2e5;--accent:#d5f769;--dark:#283d23;--shadow:0 16px 55px #142c1825;--error:#944222}
*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink)}body.dark{color-scheme:dark;--bg:#141c17;--panel:#202c23;--ink:#f0f4e9;--muted:#bcc8b5;--line:#43503f;--soft:#2c392b;--dark:#d5f769;--shadow:0 16px 55px #0008;--error:#ffcaa9}button,input,select{font:inherit}button,a,input,select{touch-action:manipulation}button{cursor:pointer;background:var(--panel);color:var(--ink);border:1px solid var(--line);border-radius:9px;padding:10px 15px;min-height:44px}button:hover{border-color:var(--muted);background:var(--soft)}a{color:inherit;text-decoration:none}a:hover{text-decoration:underline}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,[tabindex]:focus-visible{outline:3px solid #809c29;outline-offset:3px}h1,h2,h3,p{margin-top:0}h1{font-size:2.5rem;line-height:1.14;letter-spacing:-1.3px;margin-bottom:15px}h2{font-size:1.4rem;line-height:1.3}h3{font-size:1.1rem}p{color:var(--muted)}small,.fine{font-size:.875rem;color:var(--muted)}[hidden]{display:none!important}.skip{position:absolute;top:-90px;padding:12px;z-index:100;background:var(--panel)}.skip:focus{top:4px}.top{display:flex;align-items:center;gap:28px;padding:17px 32px;background:var(--panel);border-bottom:1px solid var(--line);min-height:80px}.brand{display:flex;align-items:center;gap:10px;font-size:1.35rem;font-weight:700;white-space:nowrap}.brand b{position:relative;background:var(--soft);border:1px solid var(--line);border-radius:10px;padding:0 9px;font-size:1.8rem}.brand b span{background:var(--accent);color:#263523;position:absolute;font-size:1rem;right:-5px;top:-5px;border-radius:5px}.top nav{display:flex;gap:8px;margin:auto}.top nav a{padding:10px 15px;border-radius:8px}.top nav a[aria-current]{background:var(--soft);font-weight:600}.demo{padding:10px 32px;font-size:.875rem;border-bottom:1px solid var(--line);color:var(--muted)}.demo span{font-size:.75rem;letter-spacing:1px;font-weight:700;margin-right:15px}#main{max-width:1550px;margin:auto;padding:36px 36px 120px}.eyebrow{font-size:.75rem;letter-spacing:1.5px;font-weight:700;color:var(--muted)}.row{display:flex;gap:12px;align-items:center;flex-wrap:wrap}.between{justify-content:space-between}.primary{background:var(--accent);color:#23331d;border-color:#a9c44a;font-weight:600}.primary:hover{background:#c8ea5d}.outline{color:var(--muted)}.chip{background:var(--soft);padding:5px 10px;border-radius:6px;font-size:.875rem}.toolbar{background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:13px;display:flex;gap:9px;align-items:center;flex-wrap:wrap;margin:26px 0 16px}.toolbar .status{margin-right:auto;padding:0 8px;color:var(--muted);font-size:.875rem}.action-wrap{position:relative;display:inline-flex;align-items:stretch;gap:3px}.q{border:0;background:transparent;padding:4px 9px;color:var(--muted);min-width:32px}.tip{display:none;position:absolute;top:calc(100% + 6px);right:0;width:300px;background:var(--panel);border:1px solid var(--line);border-top:3px solid #8aa93f;border-radius:9px;padding:16px;box-shadow:var(--shadow);z-index:12;font-size:.875rem;pointer-events:auto}.tip:before{content:"";position:absolute;height:10px;top:-10px;left:0;right:0}.tip strong,.tip span{display:block}.tip strong{font-size:1rem;margin-bottom:6px}.tip span{color:var(--muted);margin-top:6px}.action-wrap:hover:not(.dismissed) .tip,.action-wrap:focus-within:not(.dismissed) .tip{display:block}.tip small{display:block;margin-top:10px;color:var(--dark)}.editor-grid{display:grid;grid-template-columns:185px 1fr 255px;gap:18px}.layers,.properties{border:1px solid var(--line);background:var(--panel);border-radius:12px;padding:18px}.layers button{width:100%;text-align:left;margin-bottom:8px;border-color:transparent}.layers button.active{background:var(--soft);border-color:var(--line)}.canvas{background:#e5ebdf;border:1px solid var(--line);border-radius:12px;padding:30px;display:grid;place-items:center;min-height:390px}.sheet{background:#fff;color:#213521;padding:35px;width:100%;max-width:610px;box-shadow:0 5px 30px #25371b14}.sheet small{color:#53614e}.sheet h2{font-size:2.2rem;line-height:1.16;font-weight:500;margin:30px 0 16px}.sheet p{color:#53614e;font-size:.95rem}.sheet .sample{display:inline-block;padding:10px 16px;background:#253923;color:white;border-radius:5px}.selected-node{outline:2px solid #7c982f;outline-offset:8px}.properties label{display:block;font-size:.875rem;color:var(--muted);margin:16px 0 7px}.properties input,.properties select{width:100%;padding:9px;background:var(--bg);color:var(--ink);border:1px solid var(--line);border-radius:7px}.properties .action-wrap{width:100%}.properties .tip{right:0}.properties .value{flex:1}.learn-strip{margin-top:18px;border:1px solid var(--line);border-radius:12px;padding:19px 23px;background:var(--soft);display:flex;align-items:center;justify-content:space-between;gap:15px}.learn-strip p{margin:3px 0 0}.launcher{position:fixed;bottom:22px;right:26px;z-index:18;border-radius:30px;background:var(--dark);color:var(--bg);box-shadow:var(--shadow);padding:13px 21px;font-weight:600}.launcher:hover{background:var(--ink);color:var(--bg)}#assistant{position:fixed;right:24px;bottom:88px;width:390px;max-width:calc(100vw - 32px);max-height:calc(100dvh - 110px);background:var(--panel);border:1px solid var(--line);border-radius:18px;box-shadow:var(--shadow);z-index:20;overflow:auto}#assistant>header{padding:20px 20px 15px;display:flex;gap:8px;align-items:flex-start;justify-content:space-between;border-bottom:1px solid var(--line)}#assistant h2{font-size:1.25rem;margin:5px 0 0}#close-assistant{padding:2px 12px;font-size:1.5rem;border:0}.assistant-body{padding:18px}.context{padding:10px;background:var(--soft);border-radius:8px;font-size:.875rem}.suggestions{display:grid;gap:7px;margin-bottom:20px}.suggestions button{text-align:left;font-size:.875rem}#feed p{border-radius:9px;padding:13px;background:var(--soft);font-size:.9375rem}#feed .user{background:transparent;border:1px solid var(--line);color:var(--ink)}#feed a{display:inline-block;text-decoration:underline;margin-top:8px;color:var(--dark)}#ask-form label{display:block;font-weight:600;font-size:.875rem;margin-bottom:7px}.composer{display:flex;gap:8px}.composer input{min-width:0;width:100%;padding:10px;background:var(--bg);border:1px solid var(--line);color:var(--ink);border-radius:8px}.assistant-body .fine{margin:12px 0 0}.help-header{max-width:800px;margin:6px auto 35px}.help-header h1{margin:10px 0 16px}.searchbox{display:flex;gap:10px;background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:6px 15px;align-items:center;margin:24px 0 12px}.searchbox input{width:100%;min-width:0;background:transparent;border:0;padding:12px 2px;color:var(--ink)}.help-layout{display:grid;grid-template-columns:210px 1fr;gap:34px}.categories{display:flex;flex-direction:column;gap:7px}.categories button{text-align:left;border-color:transparent;background:transparent}.categories button.active{background:var(--soft);border-color:var(--line)}.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:15px}.article-card{display:block;text-align:left;padding:23px;background:var(--panel);border:1px solid var(--line);border-radius:12px;min-height:205px}.article-card:hover{border-color:#8da94b;text-decoration:none}.article-card h3{margin:18px 0 10px}.article-card p{font-size:.9375rem;margin:0 0 16px}.article-card .number{font-size:.875rem;color:var(--muted)}.results-label{margin-bottom:15px;color:var(--muted);font-size:.875rem}.empty{padding:35px;border:1px dashed var(--line);border-radius:12px}.article-view{display:grid;grid-template-columns:minmax(0,750px) 260px;gap:45px;max-width:1120px;margin:24px auto}.article-view h1{margin-top:24px;font-size:2.2rem}.article-view h2{margin-top:30px}.article-view li{padding:8px 0;color:var(--muted)}.article-view aside{border-left:1px solid var(--line);padding-left:25px}.article-view aside button,.article-view aside a{display:block;margin:12px 0}.notice{background:var(--soft);border-left:3px solid #88a442;padding:18px;border-radius:4px;color:var(--ink)}.phase-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px;margin-top:28px}.phase{background:var(--panel);border:1px solid var(--line);padding:24px;border-radius:13px}.phase .phase-no{color:var(--dark);font-size:.875rem;font-weight:700}.phase h2{margin:12px 0}.phase details{border-top:1px solid var(--line);padding-top:14px}.phase summary{cursor:pointer;min-height:44px;font-weight:600}.phase li{margin:9px 0;color:var(--muted)}dialog{background:var(--panel);color:var(--ink);border:1px solid var(--line);border-radius:16px;padding:28px;width:min(560px,calc(100vw - 32px));max-height:85dvh;overflow:auto}dialog::backdrop{background:#13211670}dialog h2{margin-top:9px}dialog p{white-space:pre-line}#toast{position:fixed;bottom:24px;left:24px;max-width:calc(100vw - 32px);background:var(--panel);border:1px solid var(--line);box-shadow:var(--shadow);border-radius:9px;padding:15px;z-index:40}.source{font-size:.875rem;overflow-wrap:anywhere}.spotlight{outline:4px solid #96b732;outline-offset:6px}.mobile-pick{display:none}.phase-intro{max-width:850px}.warning{color:var(--error)}
@media(max-width:1100px){.editor-grid{grid-template-columns:1fr 240px}.layers{display:none}.cards{grid-template-columns:repeat(2,1fr)}.top{padding:14px 20px;gap:14px}.top nav a{padding:9px}.article-view{grid-template-columns:1fr 230px;gap:25px}}
@media(max-width:720px){.top{flex-wrap:wrap;padding:13px 16px}.top nav{order:3;width:100%;justify-content:space-between;gap:0}.top nav a{font-size:.875rem;padding:9px 7px}.top #theme{margin-left:auto}.demo{padding:10px 16px}.demo span{display:block}#main{padding:25px 16px 110px}h1{font-size:2rem}.editor-grid{grid-template-columns:1fr}.canvas{padding:20px;min-height:300px}.sheet{padding:24px}.sheet h2{font-size:1.9rem}.properties{display:none}.toolbar .status{width:100%;margin-bottom:5px}.toolbar{gap:6px}.action-wrap button{padding:9px}.tip{width:min(285px,calc(100vw - 56px));left:0;right:auto}.toolbar .action-wrap:last-child .tip{left:auto;right:0}.learn-strip{align-items:flex-start;flex-direction:column}.help-layout{grid-template-columns:1fr;gap:18px}.categories{flex-direction:row;flex-wrap:wrap}.categories button{font-size:.875rem;padding:6px 10px}.cards{grid-template-columns:1fr}.article-card{min-height:0}.article-card h3{margin-top:10px}.article-view{grid-template-columns:1fr;gap:15px}.article-view aside{border-left:0;border-top:1px solid var(--line);padding:20px 0}.phase-grid{grid-template-columns:1fr}#assistant{right:12px;bottom:84px;max-height:calc(100dvh - 98px);width:calc(100vw - 24px);max-width:none}.launcher{right:16px;bottom:16px}.help-header{margin-bottom:22px}.mobile-pick{display:block}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important}}
/* Keep the close control and question composer available as the conversation grows. */
#assistant{display:flex;flex-direction:column;overflow:hidden;height:min(760px,calc(100dvh - 110px))}
#assistant>header{flex-shrink:0}.assistant-body{display:flex;flex-direction:column;min-height:0;overflow:auto;flex:1}.context{flex-shrink:0;margin-bottom:10px}#feed{min-height:70px;overflow:auto;flex:1}#feed p{margin-bottom:10px}.suggestions{display:flex;flex-wrap:wrap;gap:6px;margin:12px 0;flex-shrink:0}.suggestions button{padding:6px 10px;flex:1;min-width:110px}#ask-form,.assistant-body>.fine{flex-shrink:0}
@media(max-width:720px){#assistant{height:calc(100dvh - 98px)}.suggestions button{font-size:.8rem}.assistant-body>.fine{font-size:.8rem}}