@font-face{font-family:Inter Variable;font-style:normal;font-display:swap;font-weight:100 900;src:url(/_astro/inter-cyrillic-ext-wght-normal.BOeWTOD4.woff2) format("woff2-variations");unicode-range:U+0460-052F,U+1C80-1C8A,U+20B4,U+2DE0-2DFF,U+A640-A69F,U+FE2E-FE2F}@font-face{font-family:Inter Variable;font-style:normal;font-display:swap;font-weight:100 900;src:url(/_astro/inter-cyrillic-wght-normal.DqGufNeO.woff2) format("woff2-variations");unicode-range:U+0301,U+0400-045F,U+0490-0491,U+04B0-04B1,U+2116}@font-face{font-family:Inter Variable;font-style:normal;font-display:swap;font-weight:100 900;src:url(/_astro/inter-greek-ext-wght-normal.DlzME5K_.woff2) format("woff2-variations");unicode-range:U+1F00-1FFF}@font-face{font-family:Inter Variable;font-style:normal;font-display:swap;font-weight:100 900;src:url(/_astro/inter-greek-wght-normal.CkhJZR-_.woff2) format("woff2-variations");unicode-range:U+0370-0377,U+037A-037F,U+0384-038A,U+038C,U+038E-03A1,U+03A3-03FF}@font-face{font-family:Inter Variable;font-style:normal;font-display:swap;font-weight:100 900;src:url(/_astro/inter-vietnamese-wght-normal.CBcvBZtf.woff2) format("woff2-variations");unicode-range:U+0102-0103,U+0110-0111,U+0128-0129,U+0168-0169,U+01A0-01A1,U+01AF-01B0,U+0300-0301,U+0303-0304,U+0308-0309,U+0323,U+0329,U+1EA0-1EF9,U+20AB}@font-face{font-family:Inter Variable;font-style:normal;font-display:swap;font-weight:100 900;src:url(/_astro/inter-latin-ext-wght-normal.DO1Apj_S.woff2) format("woff2-variations");unicode-range:U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+0304,U+0308,U+0329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}@font-face{font-family:Inter Variable;font-style:normal;font-display:swap;font-weight:100 900;src:url(/_astro/inter-latin-wght-normal.Dx4kXJAl.woff2) format("woff2-variations");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}:root{--bg: #eef3f7;--surface: #ffffff;--surface-2: #f8fbfd;--text: #233243;--muted: #627588;--border: #d6e0e8;--border-lt: #bfd0dc;--accent: #2f698f;--accent-dk: #244f6d;--accent-lt: #4e93bc;--logo-hi: #9ed0ef;--beta: #f59e0b;--header-grad: linear-gradient(135deg, #24384b 0%, #31556f 58%, #4f7692 100%);--sans: "Inter Variable", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;--mono: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;--maxw: 1120px;--radius: 12px;--shadow: 0 1px 3px rgba(15,23,42,.06), 0 8px 24px rgba(15,23,42,.05)}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:var(--sans);background:var(--bg);color:var(--text);line-height:1.65;-webkit-font-smoothing:antialiased}img{max-width:100%;display:block}a{color:var(--accent);text-decoration:none}a:hover{text-decoration:underline}h1,h2,h3,h4{line-height:1.2;color:var(--text);margin:0 0 .5em;font-weight:800}p{margin:0 0 1em}.container{max-width:var(--maxw);margin:0 auto;padding:0 20px}.site-header{background:var(--header-grad);color:#f8fbfd;box-shadow:0 12px 30px #0f172a29;position:sticky;top:0;z-index:50}.site-header .container{display:flex;align-items:center;gap:18px;height:64px}.brand{font-size:21px;font-weight:800;letter-spacing:.01em;color:#f8fbfd;white-space:nowrap}.brand .iq{color:var(--logo-hi)}.brand .q-wrap{position:relative;display:inline-block}.brand .q-cross{position:absolute;left:48.5%;top:51%;width:.4em;height:.4em;transform:translate(-50%,-50%);pointer-events:none}.brand:hover{text-decoration:none}.beta-badge{display:inline-block;padding:2px 7px;margin-left:2px;background:var(--beta);color:#1a1200;border-radius:999px;font-size:9.5px;font-weight:900;letter-spacing:.08em;vertical-align:middle;text-transform:uppercase}.site-nav{margin-left:auto;display:flex;gap:4px;align-items:center}.site-nav a{color:#dce8f1;font-size:14px;font-weight:600;padding:8px 14px;border-radius:8px;transition:background .15s,color .15s}.site-nav a:hover{background:#ffffff1f;color:#fff;text-decoration:none}.site-nav a.active{background:#ffffff2e;color:#fff}.nav-toggle{display:none}.nav-burger{display:none;margin-left:auto;cursor:pointer;flex-direction:column;gap:4px;padding:8px}.nav-burger span{display:block;width:22px;height:2px;background:#f8fbfd;border-radius:2px;transition:.2s}@media(max-width:760px){.nav-burger{display:flex}.site-nav{position:absolute;top:64px;left:0;right:0;flex-direction:column;align-items:stretch;gap:0;background:#24384b;padding:8px 12px 14px;box-shadow:0 12px 24px #0f172a40;display:none}.nav-toggle:checked~.site-nav{display:flex}.site-nav a{padding:12px 10px;border-radius:8px;font-size:15px}.nav-toggle:checked~.nav-burger span:nth-child(1){transform:translateY(6px) rotate(45deg)}.nav-toggle:checked~.nav-burger span:nth-child(2){opacity:0}.nav-toggle:checked~.nav-burger span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}}.btn{display:inline-block;padding:11px 20px;border-radius:10px;font-weight:700;font-size:15px;cursor:pointer;border:1px solid var(--border-lt);background:var(--surface);color:var(--accent);transition:all .15s}.btn:hover{border-color:#78a4c0;background:var(--surface-2);text-decoration:none}.btn.primary{background:linear-gradient(180deg,#4e93bc,#2f698f);color:#fff;border-color:#2f698f;box-shadow:0 8px 16px #2f698f2e}.btn.primary:hover{background:var(--accent-dk);color:#fff}.hero{padding:72px 0 56px;text-align:center}.hero h1{font-size:clamp(32px,5vw,52px);margin-bottom:14px}.hero h1 span{color:var(--accent)}.hero p.lead{font-size:clamp(16px,2.2vw,20px);color:var(--muted);max-width:680px;margin:0 auto 28px}.hero-actions{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}.section{padding:48px 0}.section-title{font-size:26px;margin-bottom:6px}.section-sub{color:var(--muted);margin-bottom:28px}.grid{display:grid;gap:20px}.grid.cols-3{grid-template-columns:repeat(3,1fr)}.grid.cols-2{grid-template-columns:repeat(2,1fr)}@media(max-width:860px){.grid.cols-3,.grid.cols-2{grid-template-columns:1fr}}.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:22px;box-shadow:var(--shadow);transition:transform .15s,box-shadow .15s}a.card:hover{transform:translateY(-3px);box-shadow:0 6px 14px #0f172a1a,0 18px 40px #0f172a14;text-decoration:none}.card h3{font-size:18px;margin-bottom:6px;color:var(--text)}.card p{color:var(--muted);font-size:14.5px;margin:0}.card .tag{display:inline-block;font-family:var(--mono);font-size:11px;color:var(--accent);background:#eaf3fb;border:1px solid #cfe2f1;padding:2px 8px;border-radius:999px;margin-bottom:10px}.prose{max-width:760px;margin:0 auto}.prose h2{font-size:24px;margin-top:1.4em}.prose h3{font-size:19px;margin-top:1.2em}.prose img{border-radius:8px;margin:1.2em 0;border:1px solid var(--border)}.prose code{background:#eef2f6;padding:2px 6px;border-radius:4px;font-family:var(--mono);font-size:.9em}.article-meta{color:var(--muted);font-size:13px;font-family:var(--mono);margin-bottom:24px}.tool-frame-wrap{border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);background:var(--surface)}.tool-frame-wrap iframe{width:100%;height:80vh;min-height:600px;border:0;display:block}.tool-actions{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:14px}.site-footer{background:#1c2b3a;color:#aebfce;margin-top:64px;padding:36px 0;font-size:14px}.site-footer a{color:#cfe0ee}.site-footer .container{display:flex;flex-wrap:wrap;gap:18px;justify-content:space-between;align-items:center}.site-footer .brand-sm{font-weight:800;color:#f8fbfd;font-size:16px}.site-footer .brand-sm span{color:var(--logo-hi)}.footer-nav{display:flex;gap:16px;flex-wrap:wrap}.footer-nav a{color:#cfe0ee;font-size:14px}.feedback-form{display:flex;flex-direction:column;gap:16px;max-width:560px;margin-top:24px}.feedback-form label{display:flex;flex-direction:column;gap:6px;font-size:14px;font-weight:600;color:var(--text)}.feedback-form input,.feedback-form select,.feedback-form textarea{font-family:var(--sans);font-size:15px;padding:10px 12px;border:1px solid var(--border-lt);border-radius:8px;background:#fff;color:var(--text)}.feedback-form input:focus,.feedback-form select:focus,.feedback-form textarea:focus{outline:none;border-color:var(--accent)}.feedback-form button{align-self:flex-start;margin-top:4px}.site-auth{display:flex;gap:6px;align-items:center;margin-left:8px}.site-auth .auth-link{color:#dce8f1;font-size:14px;font-weight:600;padding:8px 12px;border-radius:8px;transition:background .15s,color .15s}.site-auth .auth-link:hover{background:#ffffff1f;color:#fff;text-decoration:none}.site-auth .auth-btn{background:var(--logo-hi);color:#1c2b3a;font-size:14px;font-weight:700;padding:7px 14px;border-radius:8px;transition:background .15s,color .15s}.site-auth .auth-btn:hover{background:#fff;text-decoration:none}.form-label{display:flex;flex-direction:column;gap:6px;font-size:14px;font-weight:600;margin-bottom:14px;color:var(--text)}.form-input{font-family:var(--sans);font-size:15px;padding:10px 12px;border:1px solid var(--border-lt);border-radius:8px;background:#fff;color:var(--text);width:100%;box-sizing:border-box}.form-input:focus{outline:none;border-color:var(--accent)}.form-hint{font-size:12px;font-weight:400;color:var(--muted)}.auth-error{background:#fef2f2;border:1px solid #fecaca;border-left:4px solid #dc2626;color:#7f1d1d;padding:10px 14px;border-radius:6px;margin-bottom:14px;font-size:14px}.account-row{display:flex;justify-content:space-between;gap:10px;padding:10px 0;border-bottom:1px solid var(--border)}.account-row:last-of-type{border-bottom:0}.account-label{color:var(--muted);font-weight:600;font-size:14px}.account-value{color:var(--text);font-weight:600;font-size:14.5px;font-family:var(--mono);text-align:right}.saved-projects-section{margin-top:28px;padding-top:18px;border-top:1px solid var(--border)}.saved-projects-section h3{font-size:16px;font-weight:800;margin:0 0 4px;color:var(--text)}.saved-projects-hint{font-size:13px;color:var(--muted);margin:0 0 14px}.saved-projects-loading{color:var(--muted);padding:12px 0;font-size:14px}.saved-projects-empty{padding:18px;text-align:center;color:var(--muted);font-size:14px;background:var(--surface-2);border:1px dashed var(--border);border-radius:10px}.saved-projects-empty a{font-weight:600}.saved-project-row{display:grid;grid-template-columns:1fr auto auto;align-items:center;gap:10px 14px;padding:12px 14px;border-bottom:1px solid var(--border)}.saved-project-row:last-of-type{border-bottom:0}.saved-project-info{display:flex;align-items:center;gap:10px;min-width:0}.saved-project-tool-badge{display:inline-block;font-size:10.5px;font-weight:800;text-transform:uppercase;letter-spacing:.05em;font-family:var(--mono);padding:3px 9px;border-radius:999px;white-space:nowrap;background:#eaf3fb;color:var(--accent-dk)}.saved-project-tool-badge.tool-weld_map{background:#fef3c7;color:#92400e}.saved-project-name{font-weight:600;color:var(--text);font-size:14.5px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;min-width:0}.saved-project-meta{font-size:12.5px;color:var(--muted);font-family:var(--mono);white-space:nowrap}.saved-project-actions{display:flex;gap:6px;align-items:center}.saved-project-open{padding:6px 14px;font-size:13.5px;font-weight:700;background:var(--accent);color:#fff!important;border-color:var(--accent)}.saved-project-open:hover{background:var(--accent-dk);border-color:var(--accent-dk);text-decoration:none}.btn.btn-delete-sm{padding:5px 11px;font-size:16px;line-height:1;background:#fef2f2;color:#b91c1c;border-color:#fecaca}.btn.btn-delete-sm:hover{background:#fee2e2;border-color:#fca5a5}@media(max-width:560px){.saved-project-row{grid-template-columns:1fr auto}.saved-project-meta{grid-column:1 / -1;margin-top:2px}.saved-project-actions{grid-column:2;grid-row:1}}.danger-zone{margin-top:32px;padding-top:18px;border-top:1px solid var(--border)}.danger-zone h3{font-size:15px;color:#7f1d1d;margin:0 0 6px}.danger-zone p{font-size:13.5px;color:var(--muted);margin:0 0 12px}.btn.btn-danger{background:#fef2f2;border-color:#fecaca;color:#7f1d1d}.btn.btn-danger:hover{background:#fee2e2;border-color:#fca5a5}@media(max-width:760px){.site-auth{margin-left:auto}.site-auth .auth-link{padding:6px 8px;font-size:13px}.site-auth .auth-btn{padding:6px 10px;font-size:13px}}.cat-bar{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:24px}.cat-chip{display:inline-block;padding:5px 12px;border-radius:999px;border:1px solid var(--border-lt);background:var(--surface);font-size:13px;font-weight:600;color:var(--accent)}.cat-chip:hover{background:#eaf3fb;text-decoration:none}.cat-chip.active{background:var(--accent);color:#fff;border-color:var(--accent)}.wq-cloud-modal-bg{display:none;position:fixed;inset:0;z-index:9999;background:#0f172a8c;backdrop-filter:blur(4px);align-items:flex-start;justify-content:center;padding:50px 16px;overflow:auto}.wq-cloud-modal-bg.open{display:flex}.wq-cloud-modal{background:var(--surface);border-radius:14px;max-width:560px;width:100%;box-shadow:0 18px 40px #0000004d;overflow:hidden;font-family:var(--sans)}.wq-cloud-modal-head{display:flex;align-items:center;justify-content:space-between;padding:18px 22px;background:var(--surface-2);border-bottom:1px solid var(--border)}.wq-cloud-modal-head h3{margin:0;font-size:18px;font-weight:800;color:var(--text)}.wq-cloud-close{background:none;border:0;font-size:24px;line-height:1;cursor:pointer;color:var(--muted);padding:0 4px;font-weight:300}.wq-cloud-close:hover{color:var(--text)}.wq-cloud-modal-body{padding:8px 0;max-height:60vh;overflow:auto}.wq-cloud-modal-foot{display:flex;justify-content:flex-end;padding:14px 22px;border-top:1px solid var(--border);background:var(--surface-2)}.wq-cloud-cancel{background:var(--surface);color:var(--text);border:1px solid var(--border-lt);border-radius:8px;padding:8px 16px;font-weight:600;font-size:14px;cursor:pointer;font-family:var(--sans)}.wq-cloud-cancel:hover{border-color:var(--accent)}.wq-cloud-row{display:grid;grid-template-columns:1fr auto;grid-template-rows:auto auto;gap:4px 14px;padding:14px 22px;border-bottom:1px solid var(--border);align-items:center}.wq-cloud-row:last-child{border-bottom:0}.wq-cloud-name{font-weight:700;color:var(--text);font-size:15px;grid-column:1;grid-row:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.wq-cloud-meta{font-size:12.5px;color:var(--muted);font-family:var(--mono);grid-column:1;grid-row:2}.wq-cloud-row-actions{grid-column:2;grid-row:1 / span 2;display:flex;gap:6px;align-items:center}.wq-cloud-btn-open{background:var(--accent);color:#fff;border:0;border-radius:7px;padding:7px 14px;font-weight:700;font-size:13.5px;cursor:pointer;font-family:var(--sans)}.wq-cloud-btn-open:hover:not(:disabled){background:var(--accent-dk)}.wq-cloud-btn-open:disabled{opacity:.6;cursor:default}.wq-cloud-btn-delete{background:#fef2f2;color:#b91c1c;border:1px solid #fecaca;border-radius:7px;padding:4px 10px;font-size:16px;font-weight:600;cursor:pointer;line-height:1;font-family:var(--sans)}.wq-cloud-btn-delete:hover{background:#fee2e2;border-color:#fca5a5}.wq-cloud-empty{padding:36px 22px;text-align:center;color:var(--muted);font-size:14.5px}