:root{--bg:#f7f7f4;--paper:#fff;--ink:#111;--muted:#777;--line:#d9d9d4;--accent:#2554ff;--ok:#1d7a46;--warn:#b57400}
*{box-sizing:border-box}html{color-scheme:light}body{margin:0;background:var(--bg);color:var(--ink);font:15px/1.6 "TX02","HYHuaGuan","PingFang SC","Microsoft YaHei UI",sans-serif}button,input{font:inherit;color:inherit}.cn{font-family:"HYHuaGuan","PingFang SC","Microsoft YaHei UI",sans-serif}.en{font-family:"TX02","Helvetica Neue",Arial,sans-serif}.display,.section-title,.card h3,.thumb-copy h3{font-family:"TX02","HYHuaGuan","PingFang SC","Microsoft YaHei UI",sans-serif;font-weight:400}
.page{width:min(1460px,calc(100% - 40px));margin:auto;padding:30px 0 56px}.top{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:30px;align-items:start;padding:4px 0 26px;border-bottom:1px solid var(--ink)}.eyebrow{font-family:"TX02",sans-serif;text-transform:uppercase;letter-spacing:.13em;font-size:12px;color:var(--muted);margin-bottom:10px}.display{margin:0;font-size:clamp(38px,5.2vw,70px);line-height:.98;letter-spacing:-.035em}.lead{max-width:780px;margin:14px 0 0;font-size:16px;color:#2b2b2b}.privacy{margin-top:8px;color:var(--muted);font-size:13px}.reset{border:1px solid var(--ink);background:transparent;padding:9px 14px;cursor:pointer}.reset:hover{background:var(--ink);color:#fff}.reset:disabled{opacity:.3;cursor:not-allowed}
.layout{display:grid;grid-template-columns:310px minmax(0,1fr);gap:34px;margin-top:28px}.section{padding-top:16px;border-top:1px solid var(--ink);margin-top:24px}.section:first-child{padding-top:0;border-top:0;margin-top:0}.section-title{margin:0 0 12px;font-size:20px;line-height:1.2;letter-spacing:-.015em}.drop{min-height:176px;border:1px dashed #8f8f89;background:var(--paper);display:flex;flex-direction:column;justify-content:center;align-items:flex-start;padding:22px;cursor:pointer;transition:.15s}.drop:hover,.drop.drag{border-color:var(--accent);background:#f5f7ff}.drop strong{font-size:20px;font-weight:400}.drop span{color:var(--muted);margin-top:4px}.drop .choose{color:var(--accent);text-decoration:underline;text-underline-offset:3px;margin-top:18px}.meta{list-style:none;padding:0;margin:18px 0 0;border-top:1px solid var(--line)}.meta li{display:grid;grid-template-columns:76px 1fr;gap:10px;padding:8px 0;border-bottom:1px solid var(--line)}.meta .k{color:var(--muted)}.meta .v{overflow-wrap:anywhere}
.control{margin-top:15px}.control:first-of-type{margin-top:0}.control-head{display:flex;justify-content:space-between;gap:10px;margin-bottom:6px}.control output{color:var(--muted);font-variant-numeric:tabular-nums}input[type=range]{width:100%;accent-color:#111}.toggles{display:grid;gap:8px;margin-top:17px}.toggle{display:flex;align-items:center;gap:8px;cursor:pointer}.toggle input{width:16px;height:16px;accent-color:#111}.checks{list-style:none;padding:0;margin:0}.checks li{display:flex;gap:9px;padding:8px 0;border-bottom:1px solid var(--line)}.dot{width:9px;height:9px;border-radius:50%;background:#aaa;flex:none;margin-top:7px}.dot.ok{background:var(--ok)}.dot.warn{background:var(--warn)}
.preview-head{display:flex;justify-content:space-between;align-items:end;gap:20px;margin-bottom:12px}.preview-head p{margin:0;color:var(--muted)}.grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,.75fr);gap:24px;align-items:start}.card{min-width:0}.card-head{display:flex;justify-content:space-between;align-items:center;gap:12px;margin-bottom:8px}.card-title{min-width:0}.card h3{margin:0;font-size:19px;letter-spacing:-.015em}.card-head small{display:block;color:var(--muted);font-size:12px;margin-top:1px}.replace{border:0;background:transparent;color:var(--accent);padding:3px 0;cursor:pointer;text-decoration:underline;text-underline-offset:3px;white-space:nowrap}.frame,.thumb{position:relative;overflow:hidden;border:1px solid var(--ink);background:linear-gradient(45deg,#e9e9e5 25%,transparent 25%),linear-gradient(-45deg,#e9e9e5 25%,transparent 25%),linear-gradient(45deg,transparent 75%,#e9e9e5 75%),linear-gradient(-45deg,transparent 75%,#e9e9e5 75%),#f6f6f3;background-size:20px 20px;background-position:0 0,0 10px,10px -10px,-10px 0}.square{aspect-ratio:1/1}.portrait{aspect-ratio:3/4;max-height:760px}.frame img,.thumb img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;object-position:var(--px,50%) var(--py,50%);transform:scale(var(--zoom,1));transform-origin:var(--px,50%) var(--py,50%);display:none;user-select:none;-webkit-user-drag:none}.has-image img{display:block}.empty{position:absolute;inset:0;display:grid;place-items:center;text-align:center;padding:22px;color:#8b8b86}.has-image .empty{display:none}.guide-center:before,.guide-center:after,.guide-safe:before,.guide-thirds:before,.guide-thirds:after,.guide-thirds .third-h:before,.guide-thirds .third-h:after{content:"";position:absolute;z-index:3;pointer-events:none}.guide-center:before{left:50%;top:0;bottom:0;border-left:1px solid rgba(255,255,255,.9);box-shadow:1px 0 rgba(0,0,0,.4)}.guide-center:after{top:50%;left:0;right:0;border-top:1px solid rgba(255,255,255,.9);box-shadow:0 1px rgba(0,0,0,.4)}.guide-safe:before{inset:9%;border:1px dashed rgba(255,255,255,.95);box-shadow:0 0 0 1px rgba(0,0,0,.25)}.guide-thirds:before{left:33.333%;top:0;bottom:0;border-left:1px solid rgba(255,255,255,.75)}.guide-thirds:after{left:66.666%;top:0;bottom:0;border-left:1px solid rgba(255,255,255,.75)}.guide-thirds .third-h:before{top:33.333%;left:0;right:0;border-top:1px solid rgba(255,255,255,.75)}.guide-thirds .third-h:after{top:66.666%;left:0;right:0;border-top:1px solid rgba(255,255,255,.75)}.export{position:absolute;right:9px;bottom:9px;z-index:5;border:1px solid rgba(0,0,0,.75);background:rgba(255,255,255,.94);padding:6px 9px;cursor:pointer;opacity:0;transition:.15s}.frame:hover .export{opacity:1}.source-badge{position:absolute;left:9px;bottom:9px;z-index:5;background:rgba(255,255,255,.92);border:1px solid rgba(0,0,0,.55);padding:4px 7px;font-size:11px;opacity:0;transition:.15s}.frame:hover .source-badge{opacity:1}
.thumb-section{display:grid;grid-template-columns:190px 190px minmax(0,1fr);gap:26px;align-items:start;margin-top:26px;padding-top:18px;border-top:1px solid var(--ink)}.thumb-wrap{width:180px}.thumb-square{width:180px;height:180px}.thumb-portrait{width:180px;height:240px}.thumb-copy h3{margin:0 0 5px;font-size:19px}.thumb-copy p{margin:0 0 12px;color:var(--muted)}.thumb-copy ul{margin:0;padding-left:18px}.note{margin-top:18px;color:var(--muted);font-size:13px}.kbd{border:1px solid #aaa;border-bottom-width:2px;padding:0 5px;font-size:12px}footer{display:flex;justify-content:space-between;gap:18px;flex-wrap:wrap;margin-top:42px;padding-top:15px;border-top:1px solid var(--ink);color:var(--muted)}
@media(max-width:980px){.layout{grid-template-columns:1fr}.sidebar{display:grid;grid-template-columns:1fr 1fr;gap:24px}.section{margin-top:0}.grid{grid-template-columns:1fr 1fr}.thumb-section{grid-template-columns:180px 180px minmax(0,1fr)}}@media(max-width:680px){.page{width:calc(100% - 24px);padding-top:18px}.top{grid-template-columns:1fr}.reset{width:100%}.sidebar{display:block}.section{margin-top:24px}.section:first-child{margin-top:0}.grid{grid-template-columns:1fr}.portrait{max-height:none}.thumb-section{grid-template-columns:150px 150px;gap:18px}.thumb-wrap{width:150px}.thumb-square{width:150px;height:150px}.thumb-portrait{width:150px;height:200px}.thumb-copy{grid-column:1/-1}.export,.source-badge{opacity:1}}