:root{color-scheme:light;--ink:#182433;--muted:#667487;--line:#dce4ec;--blue:#1769d2;--blue-dark:#1056b2;--pale:#f4f7fb;--green:#16845c;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Noto Sans JP",sans-serif}*{box-sizing:border-box}body{margin:0;background:var(--pale);color:var(--ink);font-size:16px}.app-shell{width:min(100% - 28px,680px);margin:auto;padding:env(safe-area-inset-top) 0 28px}.site-head{height:58px;display:flex;align-items:center;justify-content:space-between}.brand{color:#1e334b;text-decoration:none;font-weight:850;font-size:19px;letter-spacing:-.7px}.brand b{color:#e07c2f}.local-badge{font-size:12px;color:#526477;background:#fff;border:1px solid var(--line);border-radius:30px;padding:7px 10px}.local-badge i{display:inline-block;width:7px;height:7px;background:#27a875;border-radius:50%;margin-right:5px}.intro{padding:14px 2px 21px}.eyebrow{font-size:12px;font-weight:700;color:var(--blue);margin:0 0 7px}.intro h1{font-size:clamp(25px,6vw,34px);line-height:1.2;letter-spacing:-.04em;margin:0}.lead{color:var(--muted);line-height:1.65;font-size:15px;margin:10px 0 0}.workspace{background:#fff;border:1px solid var(--line);border-radius:18px;padding:18px;box-shadow:0 5px 18px #2039540a}.drop-area{min-height:310px;border:2px dashed #b9c9da;border-radius:14px;background:#f9fbfe;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;padding:22px 14px}.upload-icon{width:54px;height:54px;border-radius:16px;background:#e7f0fc;display:grid;place-items:center;margin-bottom:12px}.upload-icon svg{width:31px;fill:none;stroke:var(--blue);stroke-width:2.5;stroke-linecap:round;stroke-linejoin:round}.drop-area strong{font-size:19px}.drop-area>span{font-size:13px;color:var(--muted);margin:5px 0 17px}.drop-area small{font-size:11px;color:#728093;margin-top:12px}.drop-area.dragover{background:#edf5ff;border-color:var(--blue)}.button{appearance:none;border:0;border-radius:12px;min-height:50px;padding:0 20px;display:inline-flex;align-items:center;justify-content:center;text-align:center;font:inherit;font-weight:700;font-size:16px;text-decoration:none;cursor:pointer;touch-action:manipulation}.primary{background:var(--blue);color:#fff;box-shadow:0 3px 0 #0c4c9d}.primary:active{background:var(--blue-dark);transform:translateY(1px);box-shadow:0 2px 0 #0c4c9d}.editor{padding:3px 0}.file-summary{display:flex;align-items:center;gap:13px;padding:2px 0 16px;border-bottom:1px solid var(--line)}.thumb-wrap{width:76px;height:76px;flex:none;background:#eef2f6;border-radius:11px;overflow:hidden;display:grid;place-items:center}.thumb-wrap img{width:100%;height:100%;object-fit:contain}.file-info{min-width:0;display:flex;flex-direction:column;gap:5px}.file-info strong{font-size:14px;overflow-wrap:anywhere;line-height:1.35}.file-info span{font-size:13px;color:var(--muted)}.text-button{padding:8px 0;border:0;background:transparent;color:var(--blue);font:inherit;font-weight:600;font-size:14px;text-align:left;cursor:pointer;touch-action:manipulation}.settings{padding-top:17px}.section-label{font-size:15px;font-weight:750}.target-row{display:grid;grid-template-columns:minmax(95px,125px) auto 1fr;align-items:center;gap:8px;margin-top:9px}.target-row input{width:100%;height:48px;border:1px solid #b9c8d7;border-radius:10px;padding:0 12px;font:inherit;font-weight:700;font-size:20px;color:var(--ink)}.unit{font-size:14px;font-weight:700;white-space:nowrap}.presets{display:flex;justify-content:flex-end;gap:5px}.presets button{border:1px solid var(--line);background:#fff;border-radius:8px;min-height:36px;padding:0 8px;font:inherit;font-weight:600;font-size:11px;color:#42546a;white-space:nowrap;cursor:pointer}.presets button.active{border-color:var(--blue);color:var(--blue);background:#f0f6ff}.advanced-row{margin-top:17px;display:flex;align-items:center;justify-content:space-between;gap:12px}.advanced-row label{font-weight:650;font-size:14px}.advanced-row select{min-height:42px;border:1px solid #c6d1dd;border-radius:9px;background:white;padding:0 30px 0 10px;font:inherit;font-size:14px;color:var(--ink);max-width:68%}.hint{font-size:12px;color:var(--muted);line-height:1.5;margin:10px 0 16px}.full{width:100%}.status{margin-top:14px;padding:12px;border-radius:10px;background:#edf4ff;color:#28558b;font-size:14px;line-height:1.5}.status:before{content:"";display:inline-block;width:13px;height:13px;border:2px solid #b6cce9;border-top-color:var(--blue);border-radius:50%;vertical-align:-3px;margin-right:8px;animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.result{margin-top:17px;border:1px solid #bde4d2;border-radius:14px;background:#f4fbf7;padding:16px}.result-heading{display:flex;align-items:center;gap:10px}.success-mark{width:30px;height:30px;border-radius:50%;background:#d8f2e5;color:var(--green);font-weight:800;display:grid;place-items:center;flex:none}.result h2{font-size:18px;margin:0}.result-heading p{color:var(--muted);margin:3px 0 0;font-size:13px}.comparison{display:flex;align-items:center;justify-content:space-between;gap:8px;background:#fff;border-radius:11px;padding:13px 11px;margin:14px 0 7px}.comparison div{display:flex;flex-direction:column;gap:4px}.comparison div span{font-size:11px;color:var(--muted)}.comparison strong{font-size:16px}.arrow{color:#91a0b0}.saved{font-size:12px;color:var(--green);margin-left:auto;white-space:nowrap}.result-dimensions{color:var(--muted);font-size:12px;margin:8px 0 13px}.download{width:100%;background:#16845c;color:#fff;min-height:50px}.download:active{background:#116d4b}.again{display:block;margin:8px auto 0;text-align:center}.error-box{margin-top:14px;border-radius:10px;border:1px solid #f0c2bd;background:#fff5f3;color:#8b3025;padding:12px;font-size:14px;line-height:1.55}.explain{padding:21px 4px 7px}.explain h2{font-size:17px;margin:0 0 8px}.explain ol{padding-left:23px;margin:0;color:#42546a;font-size:14px;line-height:1.85}.explain p{margin:10px 0 0;color:var(--muted);font-size:12px;line-height:1.65}footer{display:flex;justify-content:space-between;gap:10px;padding:17px 4px 0;color:#8290a0;font-size:11px}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible{outline:3px solid #80b7ff;outline-offset:2px}[hidden]{display:none!important}@media(max-width:420px){.workspace{padding:14px}.target-row{grid-template-columns:95px auto}.presets{grid-column:1/-1;justify-content:flex-start}.presets button{font-size:12px;min-width:70px}.intro{padding-top:11px}.drop-area{min-height:285px}}@media(min-width:600px){.app-shell{padding-top:8px}.intro{padding-top:20px}.workspace{padding:24px}.drop-area{min-height:340px}}