:root{--bg: #09090a;--panel: #131315;--panel-2: #1c1c1f;--border: #26262b;--accent: #e11d2e;--accent-hover: #ff3b4a;--text: #ffffff;--text-dim: #9b9ba3;--green: #3ddc84;--ol-navbar: #1e2530;--ol-sidebar: #2b2f37;--ol-editor: #1a1c20;--ol-pdf: #2b2f37;--ol-pdf-page: #383d45;--ol-border: #3a3f47;--ol-hover: #3f444d}*{box-sizing:border-box}html,body,#root{margin:0;height:100%;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif}a{color:inherit;text-decoration:none}button{font:inherit;cursor:pointer;border:none;border-radius:6px}input,select{font:inherit;color:var(--text);background:var(--panel-2);border:1px solid var(--border);border-radius:6px;padding:7px 9px}input:focus,select:focus{outline:1px solid var(--accent)}.splash{height:100%;display:flex;align-items:center;justify-content:center;font-size:28px;font-weight:700;color:var(--text-dim)}.error-msg{background:#e11d2e26;border:1px solid var(--accent);color:#ff8b94;padding:8px 10px;border-radius:6px;font-size:13px}.btn-primary{background:var(--accent);color:#fff;padding:10px 14px;font-weight:600}.btn-primary:hover{background:var(--accent-hover)}.btn-primary:disabled{opacity:.6;cursor:not-allowed}.btn-ghost{background:transparent;color:var(--text-dim);border:1px solid var(--border);padding:6px 10px;font-size:13px}.btn-ghost:hover{color:#fff;border-color:#3a3a42}.auth-screen{height:100%;display:flex;align-items:center;justify-content:center;padding:20px}.auth-card{width:100%;max-width:380px;background:var(--panel);border:1px solid var(--border);border-radius:12px;padding:32px}.auth-logo{display:flex;align-items:baseline;gap:8px;font-size:24px;font-weight:800}.logo-mark{font-weight:800}.logo-word{font-size:20px}.auth-sub{color:var(--text-dim);margin:8px 0 20px}.auth-tabs{display:grid;grid-template-columns:1fr 1fr;background:var(--panel-2);border-radius:8px;padding:4px;margin-bottom:20px}.auth-tabs button{background:transparent;color:var(--text-dim);padding:8px;border-radius:6px}.auth-tabs button.active{background:var(--accent);color:#fff}.auth-form{display:flex;flex-direction:column;gap:12px}.auth-form input{width:100%}.captcha-row{display:flex;gap:10px;align-items:stretch}.captcha-img{height:52px;width:160px;flex:0 0 160px;border:1px solid var(--border);border-radius:6px;cursor:pointer;background:#14161a;object-fit:cover}.captcha-loading{display:flex;align-items:center;justify-content:center;color:var(--text-dim);font-size:12px;cursor:default}.captcha-input{flex:1;min-width:0;letter-spacing:3px;text-transform:uppercase;font-weight:700;font-size:18px;text-align:center}.captcha-refresh{align-self:flex-start;background:transparent;color:var(--text-dim);border:none;padding:0;font-size:12px;cursor:pointer}.captcha-refresh:hover{color:#fff}.topbar{height:52px;display:flex;align-items:center;gap:16px;padding:0 16px;background:var(--panel);border-bottom:1px solid var(--border)}.logo-mini{display:flex;align-items:baseline;gap:6px;font-weight:700}.topbar-right{margin-left:auto;display:flex;align-items:center;gap:12px}.user-chip{color:var(--text-dim);font-size:13px}.dash-main{flex:1;overflow:auto;padding:32px;max-width:900px;margin:0 auto;width:100%}.dash-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:24px}.dash-head h1{margin:0;font-size:22px}.empty{text-align:center;color:var(--text-dim);padding:60px 20px}.empty p{margin-bottom:16px}.project-list{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:8px}.project-row{display:flex;align-items:center;gap:16px;background:var(--panel);border:1px solid var(--border);border-radius:10px;padding:14px 16px}.project-name{font-weight:600}.project-name:hover{color:var(--accent-hover)}.project-meta{color:var(--text-dim);font-size:13px}.row-actions{margin-left:auto;display:flex;gap:8px}.rename-input{padding:6px 10px}.ol-shell{height:100%;display:flex;flex-direction:column}.ol-navbar{height:52px;flex:0 0 52px;display:flex;align-items:center;justify-content:space-between;padding:0 12px;background:var(--ol-navbar);border-bottom:1px solid var(--ol-border)}.ol-navbar-left{display:flex;align-items:center;gap:12px;min-width:0}.ol-logo{font-weight:800;letter-spacing:.5px;white-space:nowrap}.ol-project-name{background:transparent;border:1px solid transparent;font-weight:500;min-width:160px;max-width:320px;color:#fff}.ol-project-name:hover{border-color:var(--ol-border)}.save-state{font-size:12px;color:var(--text-dim);white-space:nowrap}.save-state.saved{color:var(--green)}.save-state.saving,.save-state.dirty{color:var(--text-dim)}.save-state.error{color:var(--accent)}.ol-navbar-right{display:flex;align-items:center;gap:8px}.ol-layout-toggle{display:flex;border:1px solid var(--ol-border);border-radius:6px;overflow:hidden}.ol-layout-toggle button{background:transparent;color:var(--text-dim);padding:6px 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button{background:transparent;color:var(--text-dim);width:26px;height:26px;border-radius:5px;font-size:15px}.ol-filetree-actions button:hover{background:var(--ol-hover);color:#fff}.ol-filetree-tree{flex:1;overflow:auto;padding:6px 0}.ol-folder{display:flex;align-items:center;height:28px;padding-right:10px;color:var(--text-dim);font-size:13px;font-weight:600;white-space:nowrap;overflow:hidden}.ol-folder-name{overflow:hidden;text-overflow:ellipsis}.ol-file{display:flex;align-items:center;justify-content:space-between;height:28px;padding-right:8px;color:#c8ccd4;font-size:13px;cursor:pointer;white-space:nowrap;overflow:hidden}.ol-file:hover{background:var(--ol-hover)}.ol-file.active{background:#e11d2e2e;color:#fff}.ol-file-name{overflow:hidden;text-overflow:ellipsis}.ol-file-del{background:transparent;color:var(--text-dim);padding:0 4px;visibility:hidden;font-size:15px}.ol-file:hover .ol-file-del{visibility:visible}.ol-file-del:hover{color:var(--accent)}.ol-filetree-footer{border-top:1px solid var(--ol-border);padding:10px 12px;display:flex;flex-direction:column;gap:8px;font-size:12px;color:var(--text-dim)}.ol-filetree-footer label{display:flex;flex-direction:column;gap:3px}.ol-filetree-footer select{padding:5px 6px;font-size:12px;background:var(--ol-editor);border-color:var(--ol-border)}.ol-editor{display:flex;flex-direction:column;min-width:0;min-height:0;background:var(--ol-editor)}.ol-tabs{flex:0 0 34px;height:34px;display:flex;align-items:flex-end;background:var(--ol-navbar);border-bottom:1px solid var(--ol-border);overflow-x:auto;padding:0 4px}.ol-tab{display:flex;align-items:center;gap:6px;height:30px;padding:0 10px;font-size:12px;color:var(--text-dim);background:transparent;border-radius:4px 4px 0 0;cursor:pointer;white-space:nowrap}.ol-tab.active{background:var(--ol-editor);color:#fff}.ol-tab-close{background:transparent;color:var(--text-dim);padding:0 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60px #00000080}.mock-bar{display:flex;align-items:center;gap:6px;padding:10px 12px;background:var(--panel-2);border-bottom:1px solid var(--border)}.dot{width:11px;height:11px;border-radius:50%}.dot-red{background:#ff5f57}.dot-yellow{background:#febc2e}.dot-green{background:#28c840}.mock-title{margin-left:10px;font-size:12px;color:var(--text-dim)}.mock-body{display:grid;grid-template-columns:1fr 1fr;min-height:260px}.mock-code{margin:0;padding:16px;font-family:SFMono-Regular,JetBrains Mono,Consolas,monospace;font-size:12px;line-height:1.6;color:#c9d1d9;background:#14161a;overflow:hidden;white-space:pre-wrap;word-break:break-word}.mock-pdf{background:#2b2f37;padding:18px;display:flex;flex-direction:column;gap:10px;justify-content:center}.mock-pdf-line{height:8px;border-radius:4px;background:#d9dce1;opacity:.85}.mock-pdf-line.title{width:60%;height:12px;opacity:.95}.mock-pdf-line.short{width:70%}.mock-pdf-formula{margin-top:8px;text-align:center;font-size:22px;font-family:Georgia,Times New Roman,serif;font-style:italic;color:#14161a;background:#fff;border-radius:6px;padding:10px}.mock-compiled{margin-top:8px;text-align:center;font-size:12px;color:var(--green)}.features{max-width:1120px;margin:0 auto;padding:32px 32px 64px}.features h2,.how h2{font-size:28px;margin:0 0 28px;text-align:center}.features-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.feature-card{background:var(--panel);border:1px solid var(--border);border-radius:12px;padding:22px;transition:border-color .15s,transform .15s}.feature-card:hover{border-color:#3a3a42;transform:translateY(-2px)}.feature-icon{font-size:24px;margin-bottom:12px}.feature-card h3{margin:0 0 8px;font-size:16px}.feature-card p{margin:0;color:var(--text-dim);font-size:14px;line-height:1.55}.how{max-width:1120px;margin:0 auto;padding:0 32px 72px}.how-steps{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.how-step{background:var(--panel);border:1px solid var(--border);border-radius:12px;padding:22px;text-align:center}.how-num{width:40px;height:40px;margin:0 auto 12px;display:flex;align-items:center;justify-content:center;border-radius:50%;background:var(--accent);color:#fff;font-weight:700;font-size:18px}.how-step h3{margin:0 0 8px;font-size:16px}.how-step p{margin:0;color:var(--text-dim);font-size:14px;line-height:1.55}.how-cta{text-align:center;margin-top:36px}.landing-footer{border-top:1px solid var(--border);padding:24px 32px;display:flex;align-items:center;justify-content:space-between;color:var(--text-dim);font-size:13px}.landing-footer-links{display:flex;gap:16px}.landing-footer-links a:hover{color:#fff}.dashboard{height:100%;display:flex;flex-direction:column}.dash-navbar{height:56px;flex:0 0 56px;display:flex;align-items:center;justify-content:space-between;padding:0 24px;background:var(--ol-navbar);border-bottom:1px solid var(--ol-border)}.dash-navbar-right{display:flex;align-items:center;gap:14px}.dash-main{flex:1;overflow:auto;padding:40px 32px;max-width:1200px;width:100%;margin:0 auto}.dash-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;flex-wrap:wrap;margin-bottom:28px}.dash-head h1{margin:0;font-size:26px}.dash-sub{margin:6px 0 0;color:var(--text-dim);font-size:14px}.dash-head-actions{display:flex;align-items:center;gap:10px}.dash-search{min-width:220px;padding:9px 12px;background:var(--panel-2)}.dash-empty{text-align:center;padding:80px 20px;border:1px dashed var(--border);border-radius:14px;color:var(--text-dim)}.dash-empty-icon{font-size:44px;margin-bottom:12px}.dash-empty h2{margin:0 0 8px;color:#fff;font-size:20px}.dash-empty p{margin:0 0 20px}.proj-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:16px}.proj-card{background:var(--panel);border:1px solid var(--border);border-radius:12px;overflow:hidden;display:flex;flex-direction:column;transition:border-color .15s,transform .15s}.proj-card:hover{border-color:#3a3a42;transform:translateY(-2px)}.proj-card-main{display:flex;gap:14px;padding:18px;flex:1;min-height:92px}.proj-card-icon{width:44px;height:44px;flex:0 0 44px;display:flex;align-items:center;justify-content:center;border-radius:10px;background:linear-gradient(135deg,var(--accent),#7a0c17);color:#fff;font-weight:700;font-size:20px}.proj-card-info{min-width:0}.proj-card-name{font-weight:600;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.proj-card-meta{color:var(--text-dim);font-size:12px;margin-top:4px}.proj-card-rename{width:100%;padding:5px 8px;font-size:14px;font-weight:600}.proj-card-footer{display:flex;align-items:center;justify-content:space-between;padding:10px 14px;border-top:1px solid var(--border);background:var(--panel-2)}.proj-card-time{color:var(--text-dim);font-size:12px}.proj-card-actions{display:flex;gap:6px}.proj-card-actions .btn-ghost{padding:4px 8px;font-size:12px}.btn-ghost.danger:hover{color:var(--accent);border-color:var(--accent)}@media (max-width: 820px){.hero{grid-template-columns:1fr;padding-top:40px}.features-grid,.how-steps{grid-template-columns:1fr}.hero-copy h1{font-size:34px}}