:root{color:#17202a;background:#f6f8fb;font-family:Inter,PingFang SC,Microsoft YaHei,sans-serif;font-synthesis:none}*{box-sizing:border-box}body{margin:0;min-width:320px;overflow-x:hidden}a{color:inherit}.site-header{box-sizing:border-box;position:sticky;top:0;z-index:5;height:64px;min-height:64px;background:#fffffff5;border-bottom:1px solid #dfe4ee;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px)}.header-inner{width:calc(100% - 40px);max-width:1120px;height:64px;margin:0 auto;display:flex;align-items:center;gap:28px}.brand{font-weight:800;text-decoration:none;white-space:nowrap}.tool-nav{display:flex;align-items:center;justify-content:flex-end;flex-wrap:wrap;gap:8px;flex:1;margin-left:auto}.tool-nav a{padding:7px 8px;border-radius:8px;text-decoration:none;color:#52606d;font-family:Inter,PingFang SC,Microsoft YaHei,sans-serif;font-size:13px;font-weight:650}.tool-nav a:hover,.tool-nav a[aria-current=page]{color:#0b57d0;background:#edf4ff}.ecosystem{position:relative}.ecosystem summary{cursor:pointer;list-style:none;font-weight:700}.ecosystem-menu{position:absolute;right:0;top:34px;width:180px;padding:8px;display:grid;gap:2px;background:#fff;border:1px solid #dbe2ea;border-radius:12px;box-shadow:0 14px 30px #26364a24}.ecosystem-menu a{padding:9px 10px;text-decoration:none;border-radius:7px}.ecosystem-menu a:hover{background:#f0f4f8}main{width:min(1160px,90vw);margin:0 auto;padding:54px 0 48px}.intro{text-align:center;max-width:760px;margin:0 auto 30px}.eyebrow{color:#0b57d0;text-transform:uppercase;letter-spacing:.12em;font-weight:800;font-size:.78rem}h1{font-size:clamp(2rem,5vw,3.4rem);line-height:1.08;margin:10px 0 16px}.intro>p:not(.eyebrow){color:#52606d;line-height:1.65}.resource-note{display:inline-block;padding:9px 14px;border-radius:999px;background:#fff7df;color:#6e5200!important}.tool-panel{display:grid;grid-template-columns:minmax(270px,340px) 1fr;gap:24px;padding:24px;background:#fff;border:1px solid #dfe5ec;border-radius:20px;box-shadow:0 16px 46px #27364a12}.controls{display:flex;flex-direction:column;gap:16px}.tool-panel>.controls:first-child{grid-column:1;grid-row:1}.advanced-controls{grid-column:1;grid-row:2}.upload{display:grid;gap:4px;padding:22px;border:2px dashed #92a6bd;border-radius:14px;cursor:pointer;background:#f9fbfd}.upload:hover{border-color:#0b57d0}.upload span,.file-name{color:#687684;font-size:.88rem}#file-input{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}.file-name{margin:-6px 0 0;overflow-wrap:anywhere}button{min-height:46px;border:0;border-radius:10px;font:inherit;font-weight:800;background:#0b57d0;color:#fff;cursor:pointer}button.secondary{background:#202b38}button:disabled{background:#c5cdd6;cursor:not-allowed}button:focus-visible,a:focus-visible,input:focus-visible,summary:focus-visible,.upload:focus-within{outline:3px solid #ffbf47;outline-offset:3px}.progress-wrap{display:grid;gap:7px}.status-row{display:flex;justify-content:space-between;gap:12px;font-size:.86rem;color:#52606d}progress{width:100%;height:10px;accent-color:#0b57d0}fieldset{border:1px solid #dbe2ea;border-radius:12px;padding:12px;display:flex;flex-wrap:wrap;gap:10px 14px}legend{font-weight:800;padding:0 5px}fieldset label{display:flex;gap:5px;align-items:center}.preview-panel{grid-column:2;grid-row:1 / span 2;min-height:480px;display:grid;place-items:center;position:relative;overflow:hidden;border-radius:14px;background-color:#f4f6f8;background-image:linear-gradient(45deg,#dfe4e9 25%,transparent 25%),linear-gradient(-45deg,#dfe4e9 25%,transparent 25%),linear-gradient(45deg,transparent 75%,#dfe4e9 75%),linear-gradient(-45deg,transparent 75%,#dfe4e9 75%);background-size:24px 24px;background-position:0 0,0 12px,12px -12px,-12px 0}.preview-toolbar{position:absolute;top:10px;right:10px;z-index:3;display:flex;align-items:center;max-width:calc(100% - 20px);gap:6px;padding:4px;border-radius:12px;background:#ffffffeb;box-shadow:0 4px 16px #17202a24}.preview-tool{min-width:44px;min-height:44px;padding:6px 10px}.preview-tool[aria-pressed=true]{background:#1769e0;color:#fff}.mobile-label{display:none}.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}#zoom-output{min-width:56px;text-align:center;font-weight:800}#preview{position:absolute;top:0;right:0;bottom:0;left:0;display:block;width:100%;height:100%;object-fit:contain;touch-action:none;cursor:crosshair;-webkit-user-select:none;user-select:none;will-change:transform}#preview.panning{cursor:grab}#preview.panning:active{cursor:grabbing}#preview.cropping{cursor:crosshair}#brush-indicator{position:absolute;z-index:2;border:2px solid #fff;border-radius:50%;box-shadow:0 0 0 1px #17202a,0 1px 4px #17202a80;pointer-events:none;transform:translate(-50%,-50%)}#crop-selection{position:absolute;z-index:2;border:2px solid #ffbf47;background:#ffbf4726;box-shadow:0 0 0 9999px #17202a66;pointer-events:none}#crop-selection[data-handles-enabled=false] [data-crop-handle]{display:none}#crop-selection [data-crop-handle]{position:absolute;width:18px;height:18px;border:2px solid #fff;border-radius:50%;background:#1769e0;box-shadow:0 0 0 1px #17202a;touch-action:none;pointer-events:auto;min-width:0;min-height:0;padding:0}[data-crop-handle=nw]{left:0;top:0;cursor:nwse-resize;transform:translate(-50%,-50%)}[data-crop-handle=n]{left:50%;top:0;cursor:ns-resize;transform:translate(-50%,-50%)}[data-crop-handle=ne]{right:0;top:0;cursor:nesw-resize;transform:translate(50%,-50%)}[data-crop-handle=e]{right:0;top:50%;cursor:ew-resize;transform:translate(50%,-50%)}[data-crop-handle=se]{right:0;bottom:0;cursor:nwse-resize;transform:translate(50%,50%)}[data-crop-handle=s]{left:50%;bottom:0;cursor:ns-resize;transform:translate(-50%,50%)}[data-crop-handle=sw]{left:0;bottom:0;cursor:nesw-resize;transform:translate(-50%,50%)}[data-crop-handle=w]{left:0;top:50%;cursor:ew-resize;transform:translate(-50%,-50%)}.mask-editor{display:grid;gap:12px}.mask-editor>p{margin:0;color:#687684;font-size:.86rem;line-height:1.5}.mode-buttons,.history-buttons{display:flex;flex-wrap:wrap;gap:8px}.tool-button{min-height:44px;flex:1 1 88px;padding:8px 12px;background:#e8eef7;color:#25313d}.tool-button.active,.tool-button[aria-pressed=true]{background:#1769e0;color:#fff}.brush-control{display:grid;grid-template-columns:auto 1fr auto;gap:10px;width:100%}.brush-control input{min-width:0;width:100%;min-height:44px}#preview-empty{position:absolute;max-width:310px;padding:14px 18px;text-align:center;line-height:1.5;color:#596675;background:#ffffffeb;border-radius:12px}.privacy{margin:28px auto 0;max-width:880px;color:#5c6875;font-size:.92rem;line-height:1.7}.privacy h2{color:#25313d;font-size:1rem}.footer-tagline{margin:0;color:#25313d;text-align:center;font-weight:800}.privacy details{margin-top:10px}.privacy summary{cursor:pointer;color:#0b57d0;text-align:center;font-weight:700}@media (max-width: 760px){.site-header,.header-inner{height:auto;min-height:64px}.header-inner{width:calc(100% - 32px);padding:10px 0;flex-wrap:wrap;gap:10px 16px}.tool-nav{order:3;flex-basis:100%;flex:0 0 100%;margin-left:0;justify-content:flex-end}.tool-nav a{font-size:12px}.ecosystem{margin-left:auto}.tool-panel{grid-template-columns:1fr;padding:16px}.tool-panel>.controls:first-child,.preview-panel,.advanced-controls{grid-column:1}.tool-panel>.controls:first-child{grid-row:1}.preview-panel{grid-row:2;min-height:416px}#preview{bottom:56px;height:auto}.advanced-controls{grid-row:3}.preview-toolbar{top:auto;right:0;bottom:0;left:0;justify-content:center;gap:3px;max-width:none;padding:3px}.preview-tool{min-width:36px;min-height:44px;padding:4px 6px;font-size:12px;white-space:nowrap}.desktop-label{display:none}.mobile-label{display:inline}#zoom-output{min-width:43px;font-size:12px}#crop-selection [data-crop-handle]{width:24px;height:24px}}.header-inner{max-width:1104px;gap:16px}.brand{display:flex;align-items:center;gap:8px}.brand span{display:inline-grid;place-items:center;width:28px;height:28px;border-radius:7px;background:#1769e0;color:#fff;font-size:.86rem}.tool-nav{gap:4px}.tool-nav a{position:relative;padding:7px 8px;border-radius:8px;white-space:nowrap}.tool-nav a[aria-current=page]{color:#fff;background:#1769e0}.tool-nav a.i-plan-nav{display:inline-flex;align-items:center;justify-content:center;min-width:72px;padding:7px 15px;text-align:center;color:#fff;background:#1769e0;font-weight:800;border-radius:9px}.tool-nav a[aria-current=page]{color:#1769e0;background:#edf5ff}.privacy-badge{flex:none;padding:6px 10px;border:1px solid #b9e6ca;border-radius:999px;background:#effbf3;color:#167143;font-size:.78rem;font-weight:700;white-space:nowrap}.i-plan-banner{box-sizing:border-box;display:flex;align-items:center;justify-content:space-between;gap:24px;width:min(1104px,calc(100% - 40px));margin:16px auto 0;padding:14px 18px;border:1px solid #f1cf62;border-radius:14px;background:linear-gradient(135deg,#fff9dd,#fff3ac);color:#5d4300;box-shadow:0 12px 30px #7052001a}.i-plan-banner div{display:flex;flex-direction:column;gap:3px}.i-plan-banner strong{font-size:1rem}.i-plan-banner span{line-height:1.45}.i-plan-banner a{flex:none;padding:9px 14px;border-radius:999px;background:#172133;color:#fff;font-weight:700;text-decoration:none}[data-tooltip]:after{content:attr(data-tooltip);position:fixed;top:70px;left:50%;z-index:20;width:min(420px,calc(100vw - 32px));padding:10px 12px;border-radius:8px;background:#142630f5;color:#fff;font-size:.84rem;line-height:1.45;text-align:center;white-space:normal;opacity:0;transform:translate(-50%,-4px);pointer-events:none;transition:opacity .16s ease,transform .16s ease}[data-tooltip]:hover:after,[data-tooltip]:focus-visible:after{opacity:1;transform:translate(-50%)}@media (max-width: 760px){.privacy-badge{margin-left:auto}.i-plan-banner{align-items:flex-start;flex-direction:column;width:calc(100% - 32px)}[data-tooltip]:after{position:fixed;top:auto;right:16px;bottom:16px;left:16px;width:auto;transform:translateY(4px)}[data-tooltip]:hover:after,[data-tooltip]:focus-visible:after{transform:translateY(0)}}