:root{--ink:#1c2638;--muted:#6f7787;--light:#9399a5;--blue:#2563eb;--blue-d:#174cba;--stroke:#e1e5ec;--soft:#f6f8fb;--paper:#fff;--radius:8px}
*,*:before,*:after{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;color:var(--ink);background:#fff;font:14px/1.55 -apple-system,BlinkMacSystemFont,"Segoe UI",Inter,Arial,sans-serif;-webkit-font-smoothing:antialiased}button,input,select{font:inherit}button{cursor:pointer}a{color:var(--blue);text-decoration:none}a:hover{text-decoration:underline}h1,h2,h3,p{margin-top:0}h1,h2,h3{line-height:1.25;letter-spacing:-.035em}.container{width:min(1220px,calc(100% - 56px));margin:auto}.hide,[hidden]{display:none!important}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.skip{position:fixed;left:20px;top:-100px;padding:10px;background:white;z-index:30}.skip:focus{top:20px}:focus-visible{outline:3px solid #89afff;outline-offset:2px}
.site-header{height:68px;border-bottom:1px solid var(--stroke);background:#fff}.header-content{display:flex;align-items:center;justify-content:space-between;height:100%;gap:24px}.logo{display:inline-flex;align-items:center;gap:9px;font-size:22px;line-height:1;font-weight:800;letter-spacing:-.9px;color:#1d2939;text-decoration:none}.logo:hover{text-decoration:none}.logo-period{color:var(--blue);margin-left:-9px}.logo-mark{display:grid;grid-template-columns:repeat(2,8px);grid-template-rows:repeat(2,8px);gap:3px;background:var(--blue);border-radius:5px;padding:6px}.logo-mark span{background:#fff;border-radius:1px}.logo-mark span:nth-child(2){opacity:.6}.logo-mark span:nth-child(3){opacity:.85}.header-content nav{display:flex;align-items:center;gap:31px;height:100%;margin-left:15px}.header-content nav a{font-size:13px;color:#6b7280;font-weight:550;display:flex;align-items:center;height:100%;border-bottom:2px solid transparent;padding-top:2px}.header-content nav a:hover,.header-content nav a.nav-current{color:#172033;border-color:var(--blue);text-decoration:none}.header-shortcut{font-size:12px;border:1px solid var(--stroke);color:#344055;border-radius:7px;font-weight:680;padding:9px 13px}.header-shortcut span{margin-left:6px;color:var(--blue)}.header-shortcut:hover{background:#f6f8fc;text-decoration:none}
.page-intro{padding:32px 0 25px}.breadcrumbs{font-size:10px;letter-spacing:1.3px;font-weight:750;color:#9aa1ac;margin-bottom:14px}.breadcrumbs span{color:#c9cdd5;margin:0 9px}.intro-line{display:flex;align-items:end;justify-content:space-between;gap:26px}.intro-line h1{font-size:clamp(29px,3.3vw,40px);font-weight:790;margin:0 0 8px}.intro-line p{font-size:14px;color:#727b89;margin:0;max-width:730px;line-height:1.65}.free-tag{font-size:11px;color:#748090;background:#f5f7fa;border:1px solid #e9ecf0;border-radius:30px;padding:6px 11px;white-space:nowrap;margin-bottom:4px}
.tool-frame{border:1px solid #dfe4eb;border-radius:11px;background:white;overflow:hidden;box-shadow:0 2px 10px rgba(20,33,59,.03)}.tool-topbar{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:15px 22px 13px}.tool-topbar strong{font-size:14px;font-weight:750;display:block}.tool-topbar span{font-size:12px;color:#8a929f}.plain-button{border:0;background:transparent;color:#6d7785;padding:7px 0;font-size:12px;font-weight:650}.plain-button span{font-size:18px;vertical-align:-1px;margin-right:4px;color:#778599}.plain-button:hover{color:var(--blue)}.style-picker{display:grid;grid-template-columns:repeat(6,minmax(0,1fr)) 172px;gap:10px;padding:0 22px 19px}.style-button{min-width:0;height:104px;padding:8px 5px 9px;display:flex;flex-direction:column;gap:8px;align-items:center;justify-content:center;border-radius:7px;border:1px solid #e1e5ec;background:#fff;color:#4b5565;font-size:12px;font-weight:650;transition:border-color .12s,background .12s}.style-button:hover{border-color:#b7c9ee;background:#fafcff}.style-button.selected{border:2px solid #3974ed;padding:7px 4px 8px;color:#1e56bf;background:#f5f9ff}.style-mini{height:57px;width:66px;border:1px solid #e4e8ee;border-radius:2px;background-color:#fff;background-size:13px 13px;display:block;overflow:hidden}.square-art{background-image:linear-gradient(#d1dbea 1px,transparent 1px),linear-gradient(90deg,#d1dbea 1px,transparent 1px)}.dot-art{background-image:radial-gradient(#9caec7 1.3px,transparent 1.4px)}.lined-art{background-image:linear-gradient(#cad7e9 1px,transparent 1px);background-size:100% 12px}.iso-art{background:repeating-linear-gradient(60deg,transparent 0 11px,#d1dbea 11px 12px,transparent 12px 22px),repeating-linear-gradient(120deg,transparent 0 11px,#d1dbea 11px 12px,transparent 12px 22px),repeating-linear-gradient(0deg,transparent 0 11px,#d1dbea 11px 12px,transparent 12px 22px)}.hex-art{background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='26' height='30'%3E%3Cpath d='M0 7.5L6.5 0H19.5L26 7.5V22.5L19.5 30H6.5L0 22.5Z M0 7.5L13 15L26 7.5 M0 22.5L13 15L26 22.5' fill='none' stroke='%23d1dbea' stroke-width='1'/%3E%3C/svg%3E");background-size:26px 30px}.polar-art{background:repeating-radial-gradient(circle at 50% 50%,transparent 0 7px,#d1dbea 7px 8px,transparent 8px 14px),linear-gradient(0deg,transparent 49%,#d1dbea 50%,transparent 51%),linear-gradient(90deg,transparent 49%,#d1dbea 50%,transparent 51%)}.all-styles{background:#f9fafb;border:1px solid #e4e8ed;border-radius:7px;padding:16px 11px;align-self:stretch;display:flex;flex-direction:column;justify-content:center;gap:8px}.all-styles label{color:#6c7381;font-size:11px;font-weight:700}.all-styles select{height:36px;padding:0 8px;width:100%;border:1px solid #dce2e9;border-radius:5px;background:#fff;font-size:12px;color:#344054}
.workspace{border-top:1px solid var(--stroke);display:grid;grid-template-columns:323px minmax(0,1fr);min-height:715px}.settings{border-right:1px solid var(--stroke);background:#fff}.settings-title{font-size:12px;text-transform:uppercase;color:#8b94a1;font-weight:800;letter-spacing:1.15px;padding:16px 20px 14px;border-bottom:1px solid #edf0f4}.settings-main{padding:18px 20px 21px}.field{margin-bottom:19px;min-width:0}.field:last-child{margin-bottom:0}.field>label:not(.check-row){display:flex;justify-content:space-between;align-items:center;gap:7px;margin-bottom:7px;color:#333d4e;font-size:12px;font-weight:680}.unit{color:#9aa3af;font-size:11px;font-weight:400}.field-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:11px}.field-grid+.field-grid{margin-top:0}.field-grid .field{margin-bottom:18px}.field select,.field input[type=number],.field input[type=text]{width:100%;height:38px;border:1px solid #dce1e8;border-radius:6px;background:#fff;padding:8px 10px;color:#344054;outline-offset:2px;font-size:12px}.field select:focus,.field input:focus{border-color:#7ba6ff;outline:1px solid #a7c4fa}.number-input{height:38px;border:1px solid #dce1e8;border-radius:6px;display:flex;align-items:center;overflow:hidden;background:#fff}.number-input:focus-within{border-color:#7ba6ff}.number-input input[type=number]{height:36px;border:0;box-shadow:none;outline:none;min-width:0;flex:1;padding:0 8px;background:transparent}.number-input span{font-size:11px;color:#929baa;background:#f8fafc;border-left:1px solid #edf0f4;align-self:stretch;min-width:32px;display:grid;place-items:center}.value-presets{display:flex;gap:7px;margin-top:9px}.value-presets button{border:1px solid #e1e5ec;padding:4px 12px;font-size:11px;color:#6d7684;background:#fff;border-radius:5px}.value-presets button.on,.value-presets button:hover{color:#1c58c3;background:#eff5ff;border-color:#b9cefa}.color-choice{display:flex;align-items:center;gap:9px;border:1px solid #dce1e8;padding:6px 8px;height:41px;border-radius:6px}.color-choice>input,.mini-color input{width:29px;height:27px;cursor:pointer;background:none;border:0;padding:0;flex:none}.color-choice>span:not(.color-swatches){color:#6f7888;font:11px ui-monospace,Consolas,monospace}.color-swatches{display:flex;gap:5px;margin-left:auto}.color-swatches button{width:17px;height:17px;border:1px solid #0002;border-radius:50%;padding:0}.mini-color{display:flex;align-items:center;border:1px solid #dce1e8;border-radius:6px;height:38px;gap:7px;padding:4px 7px}.mini-color span{font-size:11px;color:#667083;font-family:ui-monospace,monospace}.advanced{border-top:1px solid var(--stroke)}.advanced summary{list-style:none;cursor:pointer;display:flex;align-items:center;gap:10px;padding:17px 20px;font-weight:700;font-size:12px;user-select:none}.advanced summary::-webkit-details-marker{display:none}.advanced summary:hover{background:#fbfcff}.section-symbol{color:#7b8fae;font-size:19px;line-height:15px;width:20px;text-align:center;font-weight:400}.disclosure-icon{margin-left:auto;color:#95a0ae;font-size:18px;line-height:15px;font-weight:400}.advanced[open] .disclosure-icon{transform:rotate(45deg)}.advanced-tag{font-size:10px;color:#7a879a;background:#f3f5f8;border-radius:4px;padding:1px 6px;margin-left:auto;font-weight:550}.advanced-body{padding:0 20px 21px}.advanced-body .field{margin-bottom:16px}.advanced-body .field:last-child{margin-bottom:0}.check-row{display:flex;align-items:center;gap:8px;font-size:12px;color:#515d6d;margin:12px 0;cursor:pointer}.check-row input{accent-color:var(--blue)}input[type=range]{accent-color:var(--blue);width:100%;height:20px;cursor:pointer}.hint{color:#8590a0;font-size:11px;line-height:1.65;margin:10px 0}.first-hint{margin:0 0 16px}.warp-chips{display:flex;gap:5px;flex-wrap:wrap;margin:0 0 15px}.warp-chips button{background:#f6f8fc;border:1px solid #e2e7f0;padding:5px 9px;color:#64728b;font-size:11px;border-radius:4px}.warp-chips button.on{border-color:#97b4f3;background:#edf4ff;color:#235cc7}.hint code{color:#4b63a5;background:#f1f4fa;padding:1px 3px}.custom-functions input{font-family:ui-monospace,Consolas,monospace!important}.error-text{font-size:11px;color:#b23f38;min-height:0;margin:6px 0}.upload{display:flex;align-items:center;justify-content:center;flex-direction:column;gap:4px;background:#fafcff;border:1px dashed #adbfdd;min-height:120px;border-radius:6px;cursor:pointer;color:#2761c2}.upload>span{font-size:24px;line-height:1}.upload strong{font-size:12px}.upload small{font-size:10px;color:#929daa}.upload:hover{background:#f1f6ff}.text-danger{border:0;padding:4px 0;background:transparent;color:#af4d46;font-size:12px}.settings-note{border-top:1px solid var(--stroke);padding:15px 20px 20px;color:#8c95a3;font-size:11px;line-height:1.7}.settings-note button{background:none;padding:0;border:0;color:var(--blue);font-size:inherit;text-decoration:underline}
.preview-area{min-width:0;display:flex;flex-direction:column;background:#fff}.preview-top{display:flex;justify-content:space-between;align-items:center;gap:10px;padding:14px 20px;background:#fff;border-bottom:1px solid var(--stroke)}.preview-top>strong{font-size:12px;font-weight:770}.preview-top>div{display:flex;align-items:center;gap:12px;color:#7c8694;font-size:11px}.scale-pill{background:#f5f6f8;border:1px solid #e5e8ee;border-radius:4px;padding:3px 7px;font-size:10px;color:#929baa}.preview-stage{flex:1;position:relative;min-height:515px;display:flex;align-items:center;justify-content:center;padding:31px;background-color:#f3f5f9;background-image:radial-gradient(#e0e5ee .8px,transparent .8px);background-size:13px 13px;overflow:hidden}.preview-stage canvas{display:block;max-width:100%;max-height:550px;box-shadow:0 5px 28px #172b4e22;background:#fff;object-fit:contain;outline:1px solid #e5e8ef}.drop-shade{position:absolute;inset:12px;background:#eef5ffec;border:2px dashed #76a1f2;color:#215ac1;border-radius:8px;align-items:center;justify-content:center;font-size:22px;font-weight:750;display:none;pointer-events:none}.preview-stage.dragging .drop-shade{display:flex}.preview-bottom{padding:12px 20px;border-top:1px solid #e7ebf0;border-bottom:1px solid #e7ebf0;display:flex;justify-content:space-between;gap:10px;color:#858f9b;font-size:11px}.export{padding:18px 20px;display:flex;gap:9px;align-items:center;background:#fff}.export button{border-radius:6px;font-size:12px;font-weight:720;min-height:43px;padding:0 16px;display:inline-flex;align-items:center;justify-content:center;gap:9px;white-space:nowrap}.print-btn{background:var(--blue);color:#fff;border:1px solid var(--blue);flex:1.25}.print-btn:hover{background:var(--blue-d)}.download-btn{background:#fff;color:#344054;border:1px solid #d8dee8;flex:1}.download-btn:hover{background:#f7f9fd;border-color:#a9b8d1}.export button:disabled{opacity:.6;cursor:wait}.status{font-size:12px;color:#315da8;text-align:center;min-height:21px;margin:8px 0 0}.after-tool{display:flex;justify-content:space-between;align-items:center;gap:12px;padding:16px 0 26px;border-bottom:1px solid #e9ecf1;font-size:12px;color:#818a99}.after-tool strong{color:#536074}.after-tool a{font-weight:650}
.content-section{padding:38px 0 46px;border-bottom:1px solid #e9ecf1}.section-heading{display:flex;align-items:end;justify-content:space-between;gap:20px;margin-bottom:20px}.section-heading h2{font-size:24px;font-weight:780;margin:0 0 6px}.section-heading p{font-size:13px;color:#808998;margin:0}.filter-actions{display:flex;gap:4px;flex-wrap:wrap}.filter-actions button{border:1px solid transparent;background:transparent;color:#748092;font-size:11px;font-weight:650;padding:6px 10px;border-radius:5px}.filter-actions button.active{background:#edf3ff;color:#2159c6;border-color:#d3e2ff}.filter-actions button:hover{background:#f5f8fc}.template-grid{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:11px}.template-card{padding:0;background:white;border:1px solid #e0e5ec;cursor:pointer;border-radius:7px;overflow:hidden;text-align:left;transition:border-color .1s,transform .12s}.template-card:hover{border-color:#91b1f3;transform:translateY(-2px)}.template-art{height:105px;display:flex;align-items:center;justify-content:center;background:#f6f8fb;border-bottom:1px solid #e8ecf1;padding:12px}.template-art canvas{background:#fff;width:78px;height:94px;object-fit:fill;box-shadow:0 1px 5px #0c24361a}.template-copy{padding:11px 13px}.template-copy strong{font-size:12px;font-weight:720;display:block;color:#364254}.template-copy small{font-size:10px;color:#919aa8;display:block;margin-top:3px;line-height:1.45}
.knowledge-columns{display:grid;grid-template-columns:1fr 1fr;gap:65px;color:#5d6978}.knowledge h3{font-size:16px;font-weight:750;color:#27354a;margin:0 0 14px}.knowledge p{font-size:13px;line-height:1.8}.steps{padding-left:24px;margin:0 0 19px}.steps li{padding-left:5px;margin-bottom:14px;font-size:13px;line-height:1.8}.steps strong{color:#324052}.note{padding:14px 17px;background:#f2f6ff;border-left:3px solid #8caeed;font-size:12px;line-height:1.8}.note strong{color:#254b99}.spacing-table{border:1px solid #e5e9ee;border-radius:7px;overflow:hidden;margin-bottom:29px}.spacing-table>div{display:flex;align-items:center;padding:10px 14px;border-bottom:1px solid #ecedf1;font-size:12px}.spacing-table>div:last-child{border-bottom:0}.spacing-table strong{width:90px;color:#344055}.spacing-table span{color:#748091}.faq-columns{display:grid;grid-template-columns:1fr 1fr;gap:34px}.faq details{border-bottom:1px solid #e5e8ee}.faq summary{list-style:none;cursor:pointer;position:relative;font-weight:700;color:#3c4759;font-size:13px;padding:17px 32px 17px 0}.faq summary::-webkit-details-marker{display:none}.faq summary:after{content:'+';position:absolute;right:2px;top:13px;font-size:19px;font-weight:400;color:#8290a4}.faq details[open] summary:after{content:'−'}.faq details p{font-size:12px;line-height:1.9;color:#768292;margin:0 0 18px}.ad-slot{margin:40px auto;max-width:970px;text-align:center;border-top:1px solid #eee;padding-top:10px}.ad-slot>span{color:#a1a8b3;font-size:9px;letter-spacing:.12em;text-transform:uppercase}
.site-footer{background:#f8fafc;border-top:1px solid #e5e9ef;margin-top:14px}.footer-row{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:27px 0}.footer-row .logo{font-size:18px;display:inline-flex}.footer-row>div{display:flex;align-items:center;gap:15px}.footer-row>div>span{font-size:11px;color:#929baa;padding-left:13px;border-left:1px solid #d9dee7}.footer-row nav{display:flex;gap:23px;flex-wrap:wrap}.footer-row nav a{font-size:11px;color:#768090}.footer-row nav a:hover{color:var(--blue)}
/* Static educational pages share the same precise, understated design. */
.article{max-width:840px;margin:0 auto;padding:54px 25px 92px}.article h1{font-size:clamp(34px,4vw,48px);margin:15px 0 14px}.article .lead{font-size:17px;color:#697588;line-height:1.75;margin-bottom:30px}.article h2{font-size:24px;margin:37px 0 13px}.article h3{font-size:17px;margin:28px 0 10px}.article p,.article li{line-height:1.85;color:#606e7e;font-size:14px}.article ul{padding-left:22px}.article table{border-collapse:collapse;width:100%;margin:25px 0;font-size:13px}.article td,.article th{border:1px solid #e0e5ee;padding:12px;text-align:left}.article th{background:#f5f8fb}.article code{font-family:ui-monospace,Consolas,monospace;background:#f1f4f8;border-radius:3px;padding:1px 4px}.article a:not(.btn){text-decoration:underline;text-underline-offset:2px}.article .btn{display:inline-block;background:var(--blue);color:white;padding:11px 16px;border-radius:6px;font-weight:700;font-size:13px;margin-top:10px}.article-note{background:#f2f6fc;padding:15px 18px;border-left:3px solid var(--blue);margin:25px 0}
@media(max-width:1050px){.container{width:min(100% - 38px,920px)}.style-picker{grid-template-columns:repeat(6,1fr)}.all-styles{grid-column:1/-1;flex-direction:row;align-items:center;padding:9px 13px}.all-styles select{max-width:360px;flex:1}.workspace{grid-template-columns:305px minmax(0,1fr)}.preview-stage{padding:22px;min-height:510px}.template-grid{grid-template-columns:repeat(4,1fr)}.export{flex-wrap:wrap}.print-btn{flex-basis:100%!important}}
@media(max-width:750px){.container{width:calc(100% - 28px)}.site-header{height:59px}.header-content nav{display:none}.header-shortcut{font-size:11px}.page-intro{padding:25px 0 20px}.intro-line{display:block}.free-tag{display:inline-flex;margin-top:13px}.tool-topbar{padding:15px}.style-picker{grid-template-columns:repeat(3,minmax(0,1fr));padding:0 15px 16px;gap:8px}.style-button{height:83px;gap:4px;font-size:11px}.style-mini{height:43px;width:53px}.all-styles{grid-column:1/-1}.workspace{display:flex;flex-direction:column}.settings{border-right:0;border-bottom:1px solid var(--stroke)}.settings-title{padding:12px 17px}.settings-main{padding:17px}.advanced summary{padding:16px 17px}.advanced-body{padding:0 17px 20px}.settings-note{padding:14px 17px}.preview-stage{min-height:420px;padding:19px}.preview-stage canvas{max-height:540px}.preview-bottom{flex-wrap:wrap}.export{padding:13px;gap:8px}.export button{min-height:41px}.print-btn{flex-basis:100%;flex-grow:1}.download-btn{flex-basis:calc(50% - 5px);flex-grow:1}.after-tool{flex-wrap:wrap}.template-grid{grid-template-columns:repeat(3,1fr)}.section-heading{display:block}.filter-actions{margin-top:13px}.knowledge-columns,.faq-columns{grid-template-columns:1fr;gap:25px}.footer-row{flex-direction:column;align-items:start;gap:15px}.footer-row nav{gap:14px}}
@media(max-width:460px){.intro-line h1{font-size:31px}.intro-line p{font-size:13px}.tool-topbar strong{font-size:13px}.style-button{height:80px}.template-grid{grid-template-columns:repeat(2,1fr)}.template-art{height:90px}.template-art canvas{height:75px;width:65px}.template-copy{padding:10px}.section-heading h2{font-size:21px}.preview-stage{min-height:380px}.preview-top{padding:12px}.preview-top>div{gap:7px}.scale-pill{display:none}.preview-bottom{padding:11px 13px}.footer-row>div{display:block}.footer-row>div>span{display:none}}
@media(prefers-reduced-motion:reduce){*,*:before,*:after{scroll-behavior:auto!important;transition:none!important}}
@media print{@page{margin:0}body{background:white}.site-header,.page-intro,.tool-topbar,.style-picker,.settings,.preview-top,.preview-bottom,.export,.content-section,.after-tool,.site-footer,.status,.ad-slot{display:none!important}.tool-frame,.workspace,.preview-area,.preview-stage,.container{display:block!important;border:0!important;width:100%!important;max-width:none!important;min-height:0!important;margin:0!important;padding:0!important;box-shadow:none!important;background:white!important}.preview-stage canvas{max-width:100%!important;max-height:none!important;box-shadow:none!important}}

/* Trust/legal controls: visible, keyboard-accessible and not overlaid on the generator. */
.data-use-note{font-size:11px;line-height:1.65;color:#697789;margin:13px 0 5px}
.data-use-note a{color:#2861a2;text-decoration:underline;text-underline-offset:2px}
.privacy-footer-links{padding:0 0 19px;font-size:12px;color:#5e6d84;line-height:1.8}
.privacy-footer-links a{text-decoration:underline;text-underline-offset:2px}
.privacy-footer-links a:hover{color:#2057a0}
.privacy-choice-panel{background:#f4f7fc;border:1px solid #dce4f1;padding:20px;border-radius:8px;margin:27px 0}
.privacy-choice-panel h2{margin-top:0;font-size:22px}
.choice-buttons{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px}
.choice-buttons button{border-radius:5px;border:1px solid #bcc9d8;padding:12px 16px;font-size:13px;font-weight:700;cursor:pointer}
.choice-buttons button:disabled{opacity:.53;cursor:default}
.privacy-primary{background:#245fb3;color:#fff;border-color:#245fb3!important}
.privacy-secondary{background:#fff;color:#274c74}
.privacy-note{font-size:12px!important;margin-bottom:0}
@media(max-width:530px){.choice-buttons button{width:100%}}