:root{--paper: #fbfbfa;--panel: #ffffff;--panel-2: #f4f4f1;--line: #dcdcd6;--ink: #1d2733;--muted: #6b7684;--accent: #2563eb;--accent-soft: #dbe7ff;--frame: #1d2733;--truss: #2d6a4f;--support: #7a4a12;--load: #c2410c;--error: #c62828;--warn: #b7791f;--grid: #eeeeea;--grid-major: #dedfd8;--radius: 8px;font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif;font-size:14px;color:var(--ink)}*{box-sizing:border-box}html,body,#root{height:100%;margin:0}body{background:var(--paper)}.app{display:grid;height:100%;grid-template-columns:150px 1fr 330px;grid-template-rows:48px 1fr 190px;grid-template-areas:"top top top" "tools stage side" "foot foot foot"}.topbar{grid-area:top;display:flex;align-items:center;gap:8px;padding:0 14px;background:var(--panel);border-bottom:1px solid var(--line)}.topbar h1{font-size:15px;margin:0;font-weight:650}.topbar .file{color:var(--muted);font-size:12px}.sep{width:1px;height:22px;background:var(--line);margin:0 4px}.btn{font:inherit;padding:5px 11px;border-radius:6px;border:1px solid var(--line);background:var(--panel);color:var(--ink);cursor:pointer}.btn:hover:not(:disabled){background:var(--panel-2)}.btn:disabled{opacity:.45;cursor:default}.btn.primary{background:var(--accent);border-color:var(--accent);color:#fff;font-weight:600}.btn.active{background:var(--accent-soft);border-color:var(--accent)}.btn.danger{color:var(--error);border-color:var(--error)}.small-btn{padding:3px 8px;font-size:12px}.icon-btn{border:none;background:transparent;color:var(--muted);cursor:pointer;font-size:13px}.icon-btn:disabled{opacity:.3;cursor:default}.tools{grid-area:tools;background:var(--panel);border-right:1px solid var(--line);padding:10px 8px;display:flex;flex-direction:column;gap:5px;overflow-y:auto}.tool{font:inherit;text-align:left;padding:7px 9px;border:1px solid transparent;border-radius:6px;background:transparent;color:var(--ink);cursor:pointer}.tool:hover{background:var(--panel-2)}.tool.active{background:var(--accent-soft);border-color:var(--accent);font-weight:600}.tool-group{margin-top:12px;padding-top:10px;border-top:1px solid var(--line);display:flex;flex-direction:column;gap:4px}.stage{grid-area:stage;position:relative;min-width:0;min-height:0}.canvas{width:100%;height:100%;display:block;touch-action:none;-webkit-user-select:none;user-select:none}.side{grid-area:side;background:var(--panel);border-left:1px solid var(--line);display:flex;flex-direction:column;min-height:0}.tabs{display:flex;border-bottom:1px solid var(--line)}.tab{flex:1;font:inherit;padding:10px 4px;border:none;border-bottom:2px solid transparent;background:transparent;color:var(--muted);cursor:pointer;font-size:12.5px}.tab.active{color:var(--ink);border-bottom-color:var(--accent);font-weight:600}.side-scroll{overflow-y:auto;flex:1}.panel-body{padding:12px 14px 24px}.panel-body h3{margin:0 0 8px;font-size:15px}.panel-body h4{margin:18px 0 6px;font-size:12px;text-transform:uppercase;letter-spacing:.04em;color:var(--muted)}.field{display:grid;grid-template-columns:112px 1fr 58px;align-items:center;gap:6px;margin:5px 0}.field select{grid-column:2 / 4}.field-label{font-size:13px}.unit{font-size:12px;color:var(--muted)}.num,.text,select{font:inherit;width:100%;padding:4px 7px;border:1px solid var(--line);border-radius:5px;background:var(--paper);color:var(--ink);min-width:0}.num:focus,.text:focus,select:focus{outline:2px solid var(--accent);outline-offset:-1px}.num:disabled{opacity:.5}.field:has(.text) .text{grid-column:2 / 4}.check{display:flex;align-items:center;gap:7px;margin:5px 0;font-size:13px}.checks{margin-bottom:4px}.row{display:flex;gap:6px;flex-wrap:wrap}.card{border:1px solid var(--line);border-radius:var(--radius);padding:8px 10px;margin:8px 0;background:var(--panel-2)}.card-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:2px}.section-row{display:flex;gap:8px;align-items:flex-start}.section-fields{flex:1;min-width:0}.section-fields .field{grid-template-columns:82px 1fr 36px}hr{border:none;border-top:1px solid var(--line);margin:16px 0}.muted{color:var(--muted)}.small{font-size:12px}kbd{font:inherit;font-size:11px;border:1px solid var(--line);border-radius:4px;padding:0 4px;background:var(--panel-2)}.notice{background:color-mix(in srgb,var(--warn) 16%,transparent);border-left:3px solid var(--warn);padding:8px 10px;border-radius:4px;margin:6px 0}.footer{grid-area:foot;background:var(--panel);border-top:1px solid var(--line);overflow:hidden}.bottom{display:grid;grid-template-columns:1.4fr 1fr;height:100%}.bottom section{padding:8px 14px;overflow-y:auto}.bottom section+section{border-left:1px solid var(--line)}.bottom h4{margin:0 0 6px;font-size:12px;text-transform:uppercase;letter-spacing:.04em;color:var(--muted)}.diag{list-style:none;margin:0;padding:0}.diag li{margin:3px 0}.diag-btn{display:flex;gap:8px;align-items:baseline;width:100%;text-align:left;font:inherit;padding:4px 6px;border:none;border-radius:5px;background:transparent;color:var(--ink);cursor:pointer}.diag-btn:hover:not(:disabled){background:var(--panel-2)}.diag-btn:disabled{cursor:default}.diag .badge{font-size:11px;font-weight:700;padding:1px 6px;border-radius:4px;color:#fff}.diag .error .badge{background:var(--error)}.diag .warning .badge{background:var(--warn)}.diag code{margin-left:auto;font-size:11px;color:var(--muted)}.modal-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;background:#0006;display:grid;place-items:center;z-index:10}.modal{background:var(--panel);border-radius:var(--radius);padding:18px 20px;max-width:520px;width:calc(100% - 32px)}@media(max-width:900px){.app{grid-template-columns:120px 1fr;grid-template-rows:48px 1fr 260px 150px;grid-template-areas:"top top" "tools stage" "side side" "foot foot"}.side{border-left:none;border-top:1px solid var(--line)}}:root{--brand: #4f46e5;--brand-2: #0ea5a4;--brand-ink: #ffffff;--shadow: 0 1px 2px rgba(15, 23, 42, .06), 0 8px 24px rgba(15, 23, 42, .07)}:focus-visible{outline:3px solid var(--accent);outline-offset:2px}@media(prefers-reduced-motion:reduce){*{transition:none!important;animation:none!important}}.splash{min-height:100%;display:grid;place-content:center;gap:12px;text-align:center;color:var(--muted)}.btn{display:inline-flex;align-items:center;gap:6px}.btn.ghost{border-color:transparent;background:transparent;text-decoration:none}.btn.ghost:hover{background:var(--panel-2)}.btn.big{padding:11px 16px;font-size:15px;justify-content:center;width:100%}a.btn{text-decoration:none;color:var(--ink)}a.btn.primary{color:#fff}.btn.primary{background:var(--brand);border-color:var(--brand);color:var(--brand-ink)}.btn.primary:hover:not(:disabled){filter:brightness(1.08);background:var(--brand)}.page{min-height:100%;display:flex;flex-direction:column;background:radial-gradient(900px 340px at 85% -80px,color-mix(in srgb,var(--brand) 14%,transparent),transparent),var(--paper)}.site-header{display:flex;align-items:center;gap:8px;padding:10px 24px;background:color-mix(in srgb,var(--panel) 88%,transparent);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:5}.brand{display:inline-flex;align-items:center;gap:8px;font-weight:700;font-size:17px;color:var(--brand);text-decoration:none}.who{display:flex;align-items:center;gap:8px;margin:0 6px}.who-text{display:flex;flex-direction:column;line-height:1.2}.who-text small{color:var(--muted)}.avatar{width:32px;height:32px;border-radius:50%;display:grid;place-items:center;background:var(--accent-soft);color:var(--brand);font-weight:700}.page-main{width:100%;max-width:1100px;margin:0 auto;padding:28px 24px 96px}.intro h1{margin:8px 0 4px;font-size:30px;letter-spacing:-.02em}.intro p{margin:0 0 22px;font-size:16px}.crumbs{display:flex;align-items:center;gap:8px;color:var(--muted);margin-bottom:4px}.crumbs a{display:inline-flex;align-items:center;gap:4px;color:var(--muted);text-decoration:none}.crumbs a:hover{color:var(--ink)}.grid.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:18px}.card-link{display:flex;flex-direction:column;align-items:flex-start;gap:8px;text-align:left;font:inherit;color:inherit;text-decoration:none;padding:20px;border:1px solid var(--line);border-radius:16px;background:var(--panel);box-shadow:var(--shadow);cursor:pointer;transition:transform .15s ease,border-color .15s ease}.card-link:hover:not(:disabled){transform:translateY(-3px);border-color:var(--brand)}.card-link:disabled{opacity:.6;cursor:wait}.card-link h2{margin:4px 0 0;font-size:19px}.card-link p{margin:0;color:var(--muted)}.card-link .go{margin-top:auto;padding-top:10px;display:inline-flex;align-items:center;gap:6px;color:var(--brand);font-weight:600}.icon-bubble{width:52px;height:52px;border-radius:14px;display:grid;place-items:center;background:var(--accent-soft);color:var(--brand)}.structure-art{width:100%;display:grid;place-items:center;padding:14px 0;border-radius:12px;background:linear-gradient(135deg,var(--accent-soft),transparent);color:var(--brand)}.structure ul{list-style:none;padding:0;margin:6px 0 0;font-size:13px;color:var(--ink)}.structure li{display:flex;gap:6px;align-items:flex-start;margin:3px 0}.structure li svg{color:var(--brand-2);margin-top:3px;flex:none}.projects{margin-top:40px}.projects h2{display:flex;align-items:center;gap:8px;font-size:18px}.project-list{list-style:none;padding:0;margin:0;display:grid;gap:8px}.project-list li{display:flex;align-items:center;gap:8px;border:1px solid var(--line);background:var(--panel);border-radius:12px;padding:6px 10px}.project-open{flex:1;display:flex;align-items:center;gap:12px;padding:6px;text-decoration:none;color:var(--brand)}.project-open span{display:flex;flex-direction:column;color:var(--ink)}.table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:12px;background:var(--panel)}.table{width:100%;border-collapse:collapse}.table th,.table td{text-align:left;padding:10px 14px;border-bottom:1px solid var(--line)}.table th{font-size:12px;text-transform:uppercase;letter-spacing:.04em;color:var(--muted)}.auth{min-height:100%;display:grid;grid-template-columns:1.05fr 1fr}.auth-hero{padding:48px;color:#fff;background:linear-gradient(150deg,#4338ca,#0f766e);display:flex;flex-direction:column;justify-content:center;gap:18px}.auth-hero .brand{color:#fff}.auth-hero h2{font-size:32px;line-height:1.15;margin:8px 0 0;letter-spacing:-.02em}.auth-hero p{margin:0;font-size:16px;opacity:.92;max-width:460px}.hero-icons{display:flex;gap:18px;margin-top:12px;opacity:.9}.auth-card{align-self:center;width:100%;max-width:420px;margin:0 auto;padding:32px 24px}.auth-card h1{margin:0;font-size:28px}.form{display:grid;gap:14px;margin:20px 0 14px}.form label{display:grid;gap:5px;font-weight:600;font-size:13.5px}.form input:not([type=radio]){font:inherit;padding:10px 12px;border:1px solid var(--line);border-radius:10px;background:var(--panel);color:var(--ink)}.form-error{color:var(--error);background:color-mix(in srgb,var(--error) 10%,transparent);border-radius:8px;padding:8px 10px;margin:0}.roles{display:flex;gap:10px;border:none;padding:0;margin:0}.roles legend{font-weight:600;font-size:13.5px;margin-bottom:6px}.role{flex:1;display:flex!important;grid-template-columns:none;align-items:center;gap:8px;padding:10px 12px;border:1px solid var(--line);border-radius:10px;background:var(--panel);cursor:pointer}.role.on{border-color:var(--brand);background:var(--accent-soft)}@media(max-width:800px){.auth{grid-template-columns:1fr}.auth-hero{padding:28px 24px}.who-text{display:none}}.topbar h1{display:flex;align-items:baseline;gap:6px;max-width:34vw;overflow:hidden;white-space:nowrap;text-overflow:ellipsis}.save{display:inline-flex;align-items:center;gap:5px;font-size:12px;color:var(--muted)}.save-error{color:var(--error)}.tour-root{position:fixed;top:0;right:0;bottom:0;left:0;z-index:50}.tour-dim{position:absolute;top:0;right:0;bottom:0;left:0;background:#0a0e199e}.tour-spot{position:absolute;border-radius:10px;box-shadow:0 0 0 9999px #0a0e199e,0 0 0 3px var(--brand);pointer-events:none;transition:all .2s ease}.tour-card{position:absolute;background:var(--panel);border-radius:14px;padding:18px 18px 14px;box-shadow:0 20px 50px #00000059;max-width:calc(100vw - 24px)}.tour-card h3{margin:2px 0 6px;font-size:17px}.tour-card p{margin:0 0 12px;line-height:1.45}.tour-card .tour-count{font-size:12px;color:var(--muted);margin:0}.tour-x{position:absolute;top:8px;right:8px;border:none;background:transparent;color:var(--muted);cursor:pointer;padding:4px;border-radius:6px}.tour-actions{display:flex;gap:6px;align-items:center}.spacer{flex:1}.assistant-fab{position:fixed;right:20px;bottom:20px;z-index:30;width:54px;height:54px;border-radius:50%;border:none;display:grid;place-items:center;background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#fff;box-shadow:var(--shadow);cursor:pointer}.editor-fab{bottom:204px}.assistant{position:fixed;right:20px;bottom:86px;z-index:30;width:min(380px,calc(100vw - 32px));max-height:min(560px,calc(100vh - 140px));display:flex;flex-direction:column;background:var(--panel);border:1px solid var(--line);border-radius:16px;box-shadow:0 20px 50px #00000040;overflow:hidden}.assistant header{display:flex;align-items:center;gap:8px;padding:12px 14px;border-bottom:1px solid var(--line);color:var(--brand)}.pill{margin-left:auto;font-size:11px;padding:2px 8px;border-radius:999px;background:color-mix(in srgb,var(--warn) 18%,transparent);color:var(--warn)}.assistant-body{padding:12px 14px;overflow-y:auto;flex:1;display:flex;flex-direction:column;gap:8px}.msg{margin:0;padding:8px 11px;border-radius:12px;max-width:92%;line-height:1.4}.msg.bot{background:var(--panel-2);align-self:flex-start}.msg.user{background:var(--brand);color:var(--brand-ink);align-self:flex-end}.quick{display:flex;flex-wrap:wrap;gap:6px;padding:0 14px 10px}.chip{font:inherit;font-size:12.5px;padding:5px 10px;border-radius:999px;border:1px solid var(--line);background:var(--panel);color:var(--ink);cursor:pointer}.chip:hover{border-color:var(--brand)}.assistant-form{display:flex;gap:6px;padding:10px 12px;border-top:1px solid var(--line)}.assistant-form input{flex:1;font:inherit;padding:8px 10px;border:1px solid var(--line);border-radius:10px;background:var(--paper);color:var(--ink)}a{color:var(--brand)}a:hover{filter:brightness(1.15)}:root{--violet: #3325ec;--electric: #1748cc;--deep: #03248a;--mid: #0e6ec7;--cyan: #0875c0;--teal: #0381a5;--gradient: linear-gradient(115deg, #3325ec 0%, #1748cc 38%, #0e6ec7 68%, #0381a5 100%);--brand: var(--electric);--brand-2: var(--teal);--brand-ink: #ffffff;--accent: var(--mid);--accent-soft: color-mix(in srgb, var(--mid) 13%, #ffffff);--ink: var(--deep);--muted: color-mix(in srgb, var(--deep) 62%, #ffffff);--line: color-mix(in srgb, var(--deep) 16%, #ffffff);--panel-2: color-mix(in srgb, var(--mid) 6%, #ffffff);--grid: color-mix(in srgb, var(--deep) 6%, #ffffff);--grid-major: color-mix(in srgb, var(--deep) 13%, #ffffff);--frame: var(--deep);--truss: var(--teal);--load: var(--violet);--support: var(--mid);--select: var(--electric)}a{color:var(--mid)}.logo{display:block;height:46px;width:auto}.logo-link{display:inline-flex;align-items:center}.logo-hero{height:230px;width:auto;margin:-20px 0 -10px -14px}.site-header,.topbar{background:var(--gradient);border-bottom:none;color:#fff;-webkit-backdrop-filter:none;backdrop-filter:none}.site-header{padding:4px 24px}.site-header .btn.ghost,.topbar .btn.ghost,.site-header a.btn,.topbar a.btn{color:#fff}.site-header .btn.ghost:hover,.topbar .btn.ghost:hover{background:#ffffff29}.who-text small{color:#ffffffd1}.avatar{background:#fff3;color:#fff}.topbar h1,.topbar h1 small,.topbar .file{color:#fff}.topbar h1 small{opacity:.8}.topbar .save,.topbar .save-error{color:#ffffffe6}.topbar .sep{background:#ffffff59}.topbar{height:56px}.app{grid-template-rows:56px 1fr 190px}.btn.primary,a.btn.primary{background:var(--electric);border-color:var(--electric);color:#fff}.btn.primary:hover:not(:disabled){background:var(--deep);border-color:var(--deep);filter:none}.topbar .btn.primary{background:#fff;border-color:#fff;color:var(--electric)}.topbar .btn.primary:hover:not(:disabled){background:color-mix(in srgb,var(--mid) 12%,#fff);border-color:transparent}.auth-hero{background:var(--gradient)}.auth-hero .brand{display:none}.assistant-fab{background:var(--gradient)}.assistant header{color:var(--electric)}.pill{background:color-mix(in srgb,var(--mid) 14%,#fff);color:var(--deep)}.msg.user{background:var(--electric)}.tour-spot{box-shadow:0 0 0 9999px #03248a99,0 0 0 3px #fff}.tour-dim{background:#03248a99}.structure-art{background:linear-gradient(135deg,var(--accent-soft),transparent);color:var(--electric)}.icon-bubble{background:var(--accent-soft);color:var(--violet)}.card-link:hover:not(:disabled){border-color:var(--mid)}.card-link .go{color:var(--electric)}.structure li svg{color:var(--teal)}.page{background:radial-gradient(900px 340px at 85% -120px,color-mix(in srgb,var(--mid) 16%,transparent),transparent),var(--paper)}.tab.active{border-bottom-color:var(--violet)}.tool.active{border-color:var(--mid);color:var(--deep)}.diag .badge{color:#fff}.auth-hero{align-items:center}.logo-hero{height:min(420px,60vh);margin:0}.logo-hero{height:min(640px,82vh);max-width:100%;object-fit:contain}.auth-hero{padding:16px}.auth-hero{flex-direction:column;gap:8px}.logo-hero{height:min(520px,68vh)}.hero-tagline{margin:0;max-width:460px;text-align:center;font-size:16px;line-height:1.5;color:#fff;opacity:.95}.forgot{margin:-6px 0 0;text-align:right;font-size:13px}.notice.ok{display:flex;gap:8px;align-items:flex-start;background:color-mix(in srgb,var(--teal) 12%,#fff);border-left-color:var(--teal);color:var(--deep)}.logo{height:40px;width:auto}.site-header{padding:8px 24px}.forgot{margin:2px 0 0;text-align:center}.auth-card>p.muted.small{text-align:center;margin:6px 0 0}.forgot{margin:6px 0 0;font-size:12px}.forgot a{color:var(--mid)}.logo{height:56px}.site-header{padding:6px 24px}.topbar .logo{height:48px}.topbar{height:62px}.app{grid-template-rows:62px 1fr 190px}.btn.ghost.current{background:#fff3}.filters{display:flex;flex-wrap:wrap;gap:12px;align-items:flex-end;margin:0 0 20px}.filters label{display:grid;gap:4px;font-size:12.5px;font-weight:600}.filters select,.filters input{font:inherit;padding:8px 10px;border:1px solid var(--line);border-radius:10px;background:var(--panel);color:var(--ink);min-width:150px}.search{position:relative;flex:1;min-width:220px}.search svg{position:absolute;left:10px;bottom:11px;color:var(--muted)}.search input{width:100%;padding-left:32px}.empty{display:grid;justify-items:center;gap:8px;text-align:center;padding:56px 16px;border:1px dashed var(--line);border-radius:16px;background:var(--panel);color:var(--mid)}.empty h2{margin:4px 0 0;color:var(--deep)}.project-grid{list-style:none;padding:0;margin:0;display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:16px}.project-card{position:relative;display:flex;flex-direction:column;gap:10px;padding:14px;border:1px solid var(--line);border-radius:16px;background:var(--panel);box-shadow:var(--shadow);transition:border-color .15s ease,transform .15s ease}.project-card:hover{border-color:var(--mid);transform:translateY(-2px)}.project-card-open{display:block;text-decoration:none}.project-card-body{display:flex;flex-direction:column;gap:2px;min-width:0}.project-name{font-weight:700;font-size:16px;color:var(--deep);text-decoration:none;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.rename{font:inherit;font-weight:700;padding:4px 8px;border:2px solid var(--mid);border-radius:8px;color:var(--deep)}.project-card-actions{position:absolute;top:8px;right:8px;display:flex;gap:2px;background:color-mix(in srgb,#fff 85%,transparent);border-radius:8px}.subject.has-image{padding:0;overflow:hidden}.subject-cover{display:block;width:100%;height:150px;object-fit:cover;object-position:center 55%;border-bottom:1px solid var(--line)}.subject.has-image>:not(.subject-cover){margin-left:20px;margin-right:20px}.subject.has-image>.go{margin-bottom:18px}.subject.has-image>h2{margin-top:14px}.subject-cover{height:auto;aspect-ratio:1 / 1;object-fit:cover;object-position:center}.page-main{max-width:1240px}
