.ip-hero,.ip-section,.ip-cross,.ip-steps,.ip-app{--ip-ink:#172a42;--ip-blue:#3b5bfd;--ip-muted:#627287;--ip-line:#dce3ed;--ip-paper:#f3f6fa;color:var(--ip-ink)}
.ip-hero{display:grid;grid-template-columns:1.05fr 1fr;gap:70px;align-items:center;padding-top:76px;padding-bottom:70px}.ip-eyebrow{font-size:12px;letter-spacing:.12em;font-weight:700;color:var(--ip-blue);margin:0 0 18px}.ip-hero h1{font-family:"Noto Serif SC","Songti SC",SimSun,serif;font-size:clamp(38px,4.7vw,64px);font-weight:700;line-height:1.25;letter-spacing:-.03em;margin:0 0 26px}.ip-lead{font-size:18px;line-height:1.85;color:var(--ip-muted)}.ip-actions{display:flex;gap:12px;flex-wrap:wrap;margin:28px 0 20px}.ip-trust{font-size:13px;color:var(--ip-muted)}.ip-contact-sheet{background:#eef2f7;border:1px solid #dce3ed;padding:25px;transform:rotate(3deg);box-shadow:15px 20px 0 #f7f8fa}.ip-sheet-meta,.ip-sheet-bottom{display:flex;justify-content:space-between;font:11px "Courier New",monospace;letter-spacing:.1em;color:#627287}.ip-sheet-bottom{margin-top:25px;letter-spacing:0}.ip-sample-row{display:flex;gap:13px;margin-top:26px}.ip-sample{flex:1;padding:8px;aspect-ratio:25/35;color:#fff;background:#438edb}.ip-sample svg{width:100%;height:100%}.ip-sample.white{background:#fff;color:#96a7be}.ip-sample.red{background:#d93840}.ip-steps{display:grid;grid-template-columns:repeat(3,1fr);gap:35px;border-top:1px solid var(--ip-line);border-bottom:1px solid var(--ip-line);padding-top:28px;padding-bottom:28px}.ip-steps b{font-size:15px}.ip-steps p{font-size:14px;color:var(--ip-muted);margin-bottom:0}.ip-section{padding-top:64px;padding-bottom:32px}.ip-section h2,.ip-cross h2{font-size:28px;margin:0 0 16px}.ip-section>p{color:var(--ip-muted);max-width:760px;line-height:1.9}.ip-size-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin:28px 0}.ip-size-card{display:flex;flex-direction:column;gap:16px;padding:25px;border:1px solid var(--ip-line);border-radius:12px;color:inherit;transition:border-color .2s,transform .2s}.ip-size-card:hover{border-color:var(--ip-blue);transform:translateY(-3px)}.ip-size-card strong{font-size:26px;font-family:"Courier New",monospace}.ip-size-card small{font-size:13px;color:var(--ip-muted)}.ip-size-card>span:not(.ip-size-name){font-size:12px;color:var(--ip-muted)}.ip-size-card .ip-card-link{color:var(--ip-blue)!important}.ip-faq{max-width:900px}.ip-faq details{border-bottom:1px solid var(--ip-line);padding:20px 0}.ip-faq summary{font-weight:600;cursor:pointer}.ip-faq details p{font-size:15px;color:var(--ip-muted);line-height:1.9}.ip-cross{margin-top:48px;margin-bottom:64px;padding:36px;background:var(--ip-paper);border-radius:16px;display:flex;align-items:center;justify-content:space-between;gap:30px}.ip-cross p:last-child{color:var(--ip-muted);margin-bottom:0}.ip-dimensions{font:52px "Courier New",monospace!important}.ip-dimensions small{font-size:20px}
.ip-app{background:var(--ip-paper);min-height:100vh;font-family:"PingFang SC","Microsoft YaHei",sans-serif}.ip-app [hidden]{display:none!important}.ip-app-head{height:76px;background:white;border-bottom:1px solid var(--ip-line);display:flex;align-items:center;justify-content:space-between;gap:16px;padding:0 max(24px,calc((100vw - 1240px)/2));font-size:14px}.ip-brand{font-weight:800;font-size:21px;color:var(--ip-ink);white-space:nowrap}.ip-brand span{font-size:14px;font-weight:500;border-left:1px solid var(--ip-line);margin-left:14px;padding-left:14px}.ip-local{color:#427568;font-size:12px}.ip-workspace{max-width:1240px;margin:0 auto;display:grid;grid-template-columns:minmax(0,1fr) 350px;gap:28px;padding:30px 24px}.ip-preview-panel{min-width:0}.ip-panel-heading{display:flex;justify-content:space-between;align-items:center;gap:12px;margin-bottom:18px}.ip-panel-heading h1{font-size:23px;margin:0}.ip-panel-heading>span{font-size:12px;color:var(--ip-muted)}.ip-stage{height:530px;display:flex;align-items:center;justify-content:center;background:#e8edf4;border:1px solid #d8e0eb;border-radius:14px;position:relative;overflow:hidden}.ip-stage.dragging{outline:3px solid var(--ip-blue)}.ip-empty{text-align:center;padding:24px}.ip-empty h2{font-size:22px;margin:20px 0 10px}.ip-empty p{font-size:14px;color:var(--ip-muted)}.ip-empty-icon{width:72px;margin:auto;color:#8297b5}.ip-file-label{position:relative;margin-top:15px;cursor:pointer}.ip-file-label input{position:absolute;inset:0;width:100%;height:100%;opacity:0;cursor:pointer}.ip-file-label:focus-within{outline:3px solid #7389ff;outline-offset:4px}.ip-photo-frame{position:relative;box-shadow:0 10px 28px #263c5420;line-height:0;max-width:90%;max-height:90%}#ip-canvas{display:block;max-width:100%;max-height:450px;width:auto;height:auto;touch-action:none;cursor:move;background:white}.ip-guides{position:absolute;inset:0;pointer-events:none;border:1px dashed #ffffffaa;color:#fff;font-size:10px;text-shadow:0 1px 3px #172a42;line-height:1.3}.ip-guides span{position:absolute;top:8%;left:0;width:100%;text-align:center;border-top:1px dashed #ffffffaa}.ip-guides i{position:absolute;left:50%;top:0;height:100%;border-left:1px dashed #ffffff77}.ip-guides b{position:absolute;top:38%;border-top:1px dashed #ffffffbb;width:100%;font-weight:400;padding-top:4px;padding-left:5px}.ip-preview-footer{display:flex;justify-content:space-between;gap:12px;font-size:12px;color:var(--ip-muted);padding:16px 0}.ip-preview-footer label{display:flex;align-items:center;gap:6px}.ip-status{font-size:14px;line-height:1.7;padding:14px 16px;background:#fff;border:1px solid var(--ip-line);border-radius:8px;min-height:54px;margin:0 0 15px}.ip-status.error{color:#a72a31;border-color:#e9b9bc;background:#fff6f6}.ip-photo-actions{display:flex;gap:10px}.ip-note{font-size:12px;color:var(--ip-muted);margin-top:18px}.ip-controls{background:white;border:1px solid var(--ip-line);border-radius:14px;align-self:start;overflow:hidden}.ip-controls fieldset{border:0;padding:0;margin:0;min-width:0}.ip-control-section{padding:20px 24px;border-bottom:1px solid #edf0f4}.ip-control-section:last-child{border-bottom:0}.ip-control-section h2{font-size:15px;display:flex;align-items:center;gap:10px;margin:0 0 15px}.ip-control-section h2 span{font:11px "Courier New",monospace;color:#7b8ba0}.ip-control-section label{display:block;font-size:12px;color:var(--ip-muted);margin-bottom:7px}.ip-control-section select,.ip-control-section input[type=number]{display:block;width:100%;height:40px;border:1px solid var(--ip-line);border-radius:7px;background:#fff;color:var(--ip-ink);padding:0 10px;font:inherit;font-size:14px;margin-top:7px}.ip-pair{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:12px}.ip-swatches{display:flex;gap:8px}.ip-swatch,.ip-color-label{flex:1;border:1px solid var(--ip-line);border-radius:7px;padding:8px 4px;background:white;font:inherit;font-size:12px;text-align:center;cursor:pointer}.ip-swatch[aria-pressed=true]{border-color:var(--ip-blue);box-shadow:0 0 0 1px var(--ip-blue)}.ip-swatch i,.ip-color-label input{display:block;width:24px;height:24px;border:1px solid #d3dce7;border-radius:50%;margin:0 auto 5px;padding:0}.ip-control-section .ip-color-label{margin:0;color:var(--ip-ink);font-size:12px}.ip-check{margin-top:15px;display:flex!important;align-items:center;gap:6px}.ip-control-section input[type=range]{width:100%;accent-color:var(--ip-blue)}.ip-control-section output{float:right}.ip-text-button{background:none;border:0;color:var(--ip-blue);padding:6px 0;font:inherit;font-size:12px;cursor:pointer}.ip-hint{font-size:11px!important;color:var(--ip-muted);line-height:1.65}.ip-download{width:100%;margin-top:10px;justify-content:center}.ip-app button:disabled{opacity:.45;cursor:not-allowed}.ip-app :focus-visible{outline:3px solid #7389ff;outline-offset:3px}.ip-success{max-width:1192px;margin:0 auto 25px;background:#fff;border:1px solid #cbd5ff;border-radius:14px;padding:28px;display:flex;justify-content:space-between;gap:25px;align-items:center}.ip-success h2{font-size:24px;margin:0 0 10px}.ip-success p{font-size:13px;color:var(--ip-muted)}.ip-success-links{display:flex;flex-direction:column;gap:8px}.ip-success #ip-save-link{font-size:12px;color:var(--ip-blue)}.ip-app-footer{display:flex;justify-content:center;gap:25px;padding:12px 20px 28px;color:var(--ip-muted);font-size:12px}.ip-sr{position:absolute;width:1px;height:1px;overflow:hidden;clip-path:inset(50%)}
@media(max-width:900px){.ip-hero{gap:30px;padding-top:45px}.ip-size-grid{grid-template-columns:repeat(2,1fr)}.ip-workspace{grid-template-columns:minmax(0,1fr) 310px;gap:18px;padding:24px 16px}.ip-control-section{padding:18px}.ip-stage{height:470px}#ip-canvas{max-height:390px}.ip-panel-heading>span{display:none}.ip-success{margin:0 16px 25px}}
@media(max-width:650px){.ip-hero{grid-template-columns:1fr;padding-top:32px;padding-bottom:45px;gap:36px}.ip-contact-sheet{max-width:420px;margin:0 12px}.ip-steps{grid-template-columns:1fr;gap:16px}.ip-steps p{margin-top:5px}.ip-section{padding-top:42px}.ip-size-card{padding:18px;gap:12px}.ip-size-card strong{font-size:23px}.ip-cross{display:block;padding:25px}.ip-cross .btn{margin-top:20px}.ip-workspace{grid-template-columns:1fr;padding:22px 14px;gap:18px}.ip-app-head{height:62px;padding:0 16px}.ip-app-head>a:last-child{font-size:12px}.ip-brand{font-size:18px}.ip-brand span{margin-left:8px;padding-left:8px;font-size:13px}.ip-local{display:none}.ip-panel-heading h1{font-size:21px}.ip-stage{height:395px}#ip-canvas{max-height:340px}.ip-empty h2{font-size:19px}.ip-preview-footer{font-size:11px}.ip-note{line-height:1.8}.ip-control-section{padding:20px}.ip-success{display:block;padding:22px;margin:0 14px 20px}.ip-success-links{margin-top:20px}.ip-app-footer{gap:14px;font-size:11px}.ip-dimensions{font-size:40px!important}}
@media(prefers-reduced-motion:reduce){.ip-size-card{transition:none}}
/* Purpose catalog: shared by the landing page and photo workspace. */
.ip-catalog{--ip-ink:#172a42;--ip-blue:#3b5bfd;--ip-muted:#627287;--ip-line:#dce3ed;--ip-paper:#f3f6fa;color:var(--ip-ink);scroll-margin-top:95px}
.ip-catalog [hidden]{display:none!important}
.ip-catalog-wrap{padding-bottom:56px}
.ip-catalog-head{display:flex;align-items:end;justify-content:space-between;gap:28px;margin-bottom:25px}
.ip-catalog-head .ip-eyebrow{margin-bottom:9px}
.ip-catalog-head h2{font-size:30px;line-height:1.35;margin:0 0 8px}
.ip-catalog-head p:last-child{font-size:14px;color:var(--ip-muted);margin:0}
.ip-catalog-search{display:block;min-width:270px;font-size:12px;color:var(--ip-muted)}
.ip-catalog-search span{display:block;margin-bottom:6px}
.ip-catalog-search input{width:100%;padding:12px 15px;border:1px solid var(--ip-line);border-radius:9px;background:#fff;color:var(--ip-ink);font:inherit;font-size:14px}
.ip-categories{display:flex;gap:8px;flex-wrap:wrap;padding:0 0 22px;border-bottom:1px solid var(--ip-line)}
.ip-categories button{background:#fff;border:1px solid var(--ip-line);border-radius:8px;padding:10px 14px;cursor:pointer;font:inherit;font-size:13px;color:var(--ip-muted);white-space:nowrap}
.ip-categories button[aria-pressed=true]{background:var(--ip-ink);border-color:var(--ip-ink);color:#fff}
.ip-categories small{font:10px 'Courier New',monospace;opacity:.6;margin-left:7px}
.ip-catalog-layout{display:grid;grid-template-columns:minmax(0,1fr) 285px;gap:26px;margin-top:24px;align-items:start}
.ip-results-caption{font-size:12px;color:var(--ip-muted);margin:0 0 12px}
.ip-purpose-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}
.ip-purpose-card{display:flex;flex-direction:column;text-align:left;gap:13px;padding:18px 20px;border:1px solid var(--ip-line);border-radius:10px;background:#fff;cursor:pointer;color:var(--ip-ink);font:inherit;min-height:127px;transition:border-color .15s,background .15s}
.ip-purpose-card:hover{border-color:#91a4ec}
.ip-purpose-card[aria-pressed=true]{border-color:var(--ip-blue);box-shadow:inset 0 0 0 1px var(--ip-blue);background:#f6f8ff}
.ip-purpose-card-top{display:flex;align-items:center;justify-content:space-between;gap:8px;font-size:16px}
.ip-purpose-check{width:19px;height:19px;display:grid;place-items:center;border-radius:50%;border:1px solid var(--ip-line);font-size:11px;color:transparent;flex-shrink:0}
.ip-purpose-card[aria-pressed=true] .ip-purpose-check{background:var(--ip-blue);border-color:var(--ip-blue);color:#fff}
.ip-purpose-desc{font-size:12px;color:var(--ip-muted);line-height:1.5}
.ip-purpose-card-meta{display:flex;align-items:center;justify-content:space-between;gap:8px;margin-top:auto;font-size:10px;color:var(--ip-muted)}
.ip-purpose-card-meta b{font:12px 'Courier New',monospace;color:#455b79}
.ip-purpose-card-meta>span{background:#eef2f6;padding:3px 6px;border-radius:4px;white-space:nowrap}
.ip-custom-entry{display:flex;justify-content:space-between;gap:12px;font-size:12px;margin-top:19px;color:var(--ip-muted)}
.ip-custom-entry a,.ip-purpose-empty a{color:var(--ip-blue)}
.ip-purpose-empty{padding:50px 20px;text-align:center;border:1px dashed var(--ip-line);border-radius:10px;font-size:14px;color:var(--ip-muted)}
.ip-purpose-detail{background:#fff;border:1px solid var(--ip-line);border-top:3px solid var(--ip-blue);border-radius:10px;padding:22px}
.ip-purpose-detail .ip-eyebrow{font-size:11px;margin-bottom:10px}
.ip-purpose-detail h3{font-size:23px;margin:0 0 8px}
.ip-purpose-kind{font-size:11px;color:var(--ip-muted)}
.ip-purpose-detail dl{margin:18px 0;padding:14px 0;border-top:1px solid #edf0f4;border-bottom:1px solid #edf0f4}
.ip-purpose-detail dl div{display:flex;justify-content:space-between;gap:12px;margin:9px 0;font-size:12px}
.ip-purpose-detail dt{color:var(--ip-muted);flex-shrink:0}.ip-purpose-detail dd{margin:0;text-align:right;font-weight:600}
.ip-purpose-detail p[data-purpose-note]{font-size:12px;color:var(--ip-muted);line-height:1.85;margin:0}
.ip-purpose-detail a[data-purpose-source]{display:block;font-size:11px;line-height:1.6;color:var(--ip-blue);margin:12px 0;overflow-wrap:anywhere}
.ip-purpose-start{width:100%;margin-top:20px;font-size:13px!important;justify-content:center}
.ip-catalog-footnote{display:block;font-size:10px;line-height:1.8;text-align:center;color:var(--ip-muted);margin-top:10px}
.ip-catalog :focus-visible{outline:3px solid #7389ff;outline-offset:3px}
.ip-app-catalog{max-width:1240px;padding:32px 24px 12px;margin:auto}
.ip-app-catalog .ip-catalog{background:#fff;border:1px solid var(--ip-line);border-radius:14px;padding:26px}
.ip-app-catalog .ip-catalog-head h2{font-size:25px}
.ip-app-catalog .ip-catalog-layout{grid-template-columns:minmax(0,1fr) 285px}
.ip-app-catalog .ip-purpose-card{padding:16px;min-height:119px}
.ip-app-catalog .ip-purpose-detail{background:#f7f9fc}
.ip-change-purpose{font-size:12px;color:var(--ip-blue)}
#ip-workspace{scroll-margin-top:25px}
.ip-current-purpose{display:flex;flex-direction:column;gap:5px;padding:12px;background:#f3f6fe;border-radius:7px;margin-bottom:15px}
.ip-current-purpose strong{font-size:14px}.ip-current-purpose small{font-size:10px;color:var(--ip-muted)}
.ip-unit-label{margin-top:13px}
@media(min-width:1450px){.ip-app-catalog .ip-purpose-grid{grid-template-columns:repeat(3,minmax(0,1fr))}}
@media(max-width:900px){.ip-catalog-layout,.ip-app-catalog .ip-catalog-layout{grid-template-columns:minmax(0,1fr) 250px;gap:16px}.ip-purpose-card{padding:14px}.ip-purpose-card-top{font-size:14px}.ip-purpose-card-meta{flex-wrap:wrap}.ip-app-catalog{padding:22px 16px 0}.ip-app-catalog .ip-catalog{padding:20px}.ip-catalog-search{min-width:220px}.ip-purpose-detail{padding:18px}.ip-categories{gap:6px}.ip-categories button{padding:9px 11px}}
@media(max-width:650px){.ip-catalog-wrap{padding-bottom:38px}.ip-catalog-head{display:block;margin-bottom:18px}.ip-catalog-head h2{font-size:25px}.ip-catalog-head p:last-child{font-size:12px;line-height:1.8}.ip-catalog-search{margin-top:18px}.ip-categories{flex-wrap:nowrap;overflow-x:auto;padding-bottom:13px;scrollbar-width:thin}.ip-categories button{font-size:12px}.ip-categories small{display:none}.ip-catalog-layout,.ip-app-catalog .ip-catalog-layout{grid-template-columns:1fr;gap:20px;margin-top:18px}.ip-purpose-grid{gap:9px}.ip-purpose-card,.ip-app-catalog .ip-purpose-card{padding:13px 11px;min-height:135px;gap:11px}.ip-purpose-card-top{font-size:14px}.ip-purpose-desc{font-size:11px}.ip-purpose-card-meta b{font-size:11px}.ip-purpose-card-meta>span{font-size:9px}.ip-purpose-detail{padding:20px}.ip-purpose-detail dl{display:grid;grid-template-columns:1fr 1fr;gap:10px}.ip-purpose-detail dl div{display:block;margin:0}.ip-purpose-detail dd{text-align:left;margin-top:5px}.ip-purpose-detail h3{font-size:22px}.ip-custom-entry{font-size:11px;flex-wrap:wrap}.ip-app-catalog{padding:18px 14px 0}.ip-app-catalog .ip-catalog{padding:17px}.ip-app-catalog .ip-catalog-head h2{font-size:23px}.ip-app-catalog .ip-purpose-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(prefers-reduced-motion:reduce){.ip-purpose-card{transition:none}}
@media(max-width:650px){.ip-categories{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));overflow:visible;gap:6px}.ip-categories button{padding:10px 4px;font-size:11px;min-width:0}}