:root{color-scheme:light dark;--bg: #f6f7f9;--surface: #ffffff;--surface-2: #eef0f4;--text: #1b1f24;--text-muted: #5c6470;--border: #d5dae2;--accent: #2563eb;--accent-text: #ffffff;--danger: #dc2626;--ok: #16a34a;--shadow: 0 1px 3px rgba(0, 0, 0, .08);--checker-a: #e9ecf1;--checker-b: #f8fafc}@media(prefers-color-scheme:dark){:root{--bg: #14171b;--surface: #1e2228;--surface-2: #272c34;--text: #e7eaee;--text-muted: #9aa3af;--border: #3a414c;--accent: #3b82f6;--danger: #f87171;--ok: #4ade80;--shadow: 0 1px 3px rgba(0, 0, 0, .4);--checker-a: #23272e;--checker-b: #2c313a}}*{box-sizing:border-box}body{margin:0;font-family:Hiragino Kaku Gothic ProN,Hiragino Sans,BIZ UDPGothic,Meiryo,system-ui,-apple-system,sans-serif;background:var(--bg);color:var(--text);line-height:1.6}.app{max-width:860px;margin:0 auto;padding:24px 16px 48px}.header{text-align:center}.header h1{font-size:1.5rem;margin:0 0 4px}.header__tagline{margin:0 0 6px;font-size:.9rem;color:var(--text-muted)}.header__privacy{margin:0 0 20px;font-size:.85rem;color:var(--text-muted)}.panel{background:var(--surface);border:1px solid var(--border);border-radius:10px;padding:16px;margin-bottom:16px;box-shadow:var(--shadow)}select{font-family:inherit;font-size:.9rem;background:var(--surface);color:var(--text);border:1px solid var(--border);border-radius:6px;padding:6px 8px}button{font-family:inherit;font-size:.85rem;border:1px solid var(--border);background:var(--surface);color:var(--text);border-radius:6px;padding:5px 10px;cursor:pointer}button:hover:not(:disabled){background:var(--surface-2)}button:disabled{opacity:.45;cursor:default}.btn-danger{color:var(--danger)}.btn-primary{background:var(--accent);border-color:var(--accent);color:var(--accent-text);font-size:1rem;font-weight:600;padding:10px 20px}.btn-primary:hover:not(:disabled){background:var(--accent);filter:brightness(1.1)}.controls__row{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:14px}.controls__field{display:flex;flex-direction:column;gap:4px;font-size:.85rem;color:var(--text-muted);flex:1 1 180px;min-width:0}.controls__field select{width:100%;min-width:0}.controls__field--wide{flex-basis:300px}.controls__actions{display:flex;align-items:center;flex-wrap:wrap;gap:10px}.color-row{display:flex;align-items:center;flex-wrap:wrap;gap:8px;margin-bottom:14px}.color-row__label{font-size:.85rem;color:var(--text-muted)}.color-row__note{font-size:.75rem;color:var(--text-muted)}.color-row input[type=color]{width:40px;height:28px;padding:0;border:1px solid var(--border);border-radius:6px;background:none;cursor:pointer}.swatch{width:24px;height:24px;padding:0;border-radius:6px;border:1px solid var(--border)}.swatch--active{outline:2px solid var(--accent);outline-offset:1px}.advanced{margin-top:14px;border-top:1px solid var(--border);padding-top:10px}.advanced summary{cursor:pointer;font-size:.85rem;color:var(--text-muted)}.advanced__body{display:flex;flex-wrap:wrap;gap:16px;margin-top:12px}.slider{display:flex;flex-direction:column;gap:2px;flex:1 1 240px;font-size:.85rem;color:var(--text-muted)}.slider b{color:var(--text)}.slider input[type=range]{width:100%;accent-color:var(--accent)}.slider small{font-size:.75rem}.hint{font-size:.8rem;color:var(--text-muted);margin:10px 0 0}.status{display:flex;align-items:center;gap:8px;margin:0 0 16px;padding:10px 14px;border-radius:8px;font-size:.9rem}.status--ok{background:color-mix(in srgb,var(--ok) 12%,transparent);color:var(--ok)}.status--error{background:color-mix(in srgb,var(--danger) 12%,transparent);color:var(--danger)}.status--busy{background:color-mix(in srgb,var(--accent) 12%,transparent);color:var(--accent)}.spinner{width:14px;height:14px;flex-shrink:0;border:2px solid currentColor;border-right-color:transparent;border-radius:50%;animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.dropzone{text-align:center;padding:48px 16px;border:2px dashed var(--border);cursor:pointer}.dropzone:hover{border-color:var(--accent);background:var(--surface-2)}.dropzone__title{margin:0 0 6px;font-size:1.15rem;font-weight:600}.dropzone__sub{margin:0 0 10px;font-size:.85rem;color:var(--text-muted)}.dropzone__formats{margin:0;font-size:.78rem;color:var(--text-muted)}.drag-overlay{position:fixed;inset:0;z-index:50;display:flex;align-items:center;justify-content:center;font-size:1.3rem;font-weight:700;color:var(--accent-text);background:color-mix(in srgb,var(--accent) 80%,transparent);pointer-events:none}.preview__head{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:10px;margin-bottom:12px}.preview__name{font-weight:600;font-size:.95rem;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;max-width:60%}.preview__toggle{display:flex;gap:4px}.tab{background:var(--surface-2);border:1px solid var(--border);border-radius:6px;padding:6px 14px;font-size:.85rem;color:var(--text-muted)}.tab--active{background:var(--accent);border-color:var(--accent);color:var(--accent-text);font-weight:600}.preview__stage{display:flex;align-items:center;justify-content:center;min-height:240px;max-height:60vh;border-radius:8px;border:1px solid var(--border);overflow:hidden;background-color:var(--checker-b);background-image:linear-gradient(45deg,var(--checker-a) 25%,transparent 25%),linear-gradient(-45deg,var(--checker-a) 25%,transparent 25%),linear-gradient(45deg,transparent 75%,var(--checker-a) 75%),linear-gradient(-45deg,transparent 75%,var(--checker-a) 75%);background-size:20px 20px;background-position:0 0,0 10px,10px -10px,-10px 0}.preview__stage img{max-width:100%;max-height:60vh;object-fit:contain;display:block}.preview__placeholder,.preview__error{color:var(--text-muted);font-size:.9rem;padding:24px;margin:0;text-align:center}.preview__error{color:var(--danger)}.preview__meta{display:flex;align-items:center;flex-wrap:wrap;gap:12px;margin-top:12px;font-size:.82rem;color:var(--text-muted)}.preview__meta .btn-primary{margin-left:auto}.preview__warn{color:var(--danger)}.gallery__head{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:12px}.gallery__head h2{font-size:1rem;margin:0}.thumbs{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(auto-fill,minmax(130px,1fr));gap:10px}.thumb{position:relative;border:1px solid var(--border);border-radius:8px;overflow:hidden;background:var(--surface)}.thumb--active{border-color:var(--accent);box-shadow:0 0 0 1px var(--accent)}.thumb--error{border-color:var(--danger)}.thumb__main{display:block;width:100%;border:none;border-radius:0;padding:0 0 6px;text-align:left;background:none}.thumb__main:hover:not(:disabled){background:var(--surface-2)}.thumb__image{position:relative;display:flex;align-items:center;justify-content:center;height:96px;background-color:var(--checker-b);background-image:linear-gradient(45deg,var(--checker-a) 25%,transparent 25%),linear-gradient(-45deg,var(--checker-a) 25%,transparent 25%),linear-gradient(45deg,transparent 75%,var(--checker-a) 75%),linear-gradient(-45deg,transparent 75%,var(--checker-a) 75%);background-size:12px 12px;background-position:0 0,0 6px,6px -6px,-6px 0}.thumb__image img{max-width:100%;max-height:96px;object-fit:contain}.thumb__spinner{position:absolute;width:22px;height:22px;border:3px solid var(--accent);border-right-color:transparent;border-radius:50%;animation:spin .8s linear infinite}.thumb__name{display:block;padding:6px 8px 0;font-size:.78rem;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.thumb__meta{display:block;padding:0 8px;font-size:.72rem;color:var(--text-muted)}.thumb__remove{position:absolute;top:4px;right:4px;width:22px;height:22px;padding:0;line-height:1;border-radius:50%;background:var(--surface);opacity:.85}.footer{margin-top:32px;font-size:.8rem;color:var(--text-muted);border-top:1px solid var(--border);padding-top:12px}.footer__copyright{margin-top:24px;text-align:center;font-size:.75rem}.footer__copyright a{color:inherit}.ad-slot{margin-top:32px;text-align:center}.ad-slot img{max-width:100%;height:auto}.ad-slot--top{margin-top:0;margin-bottom:16px}.ad-slot__row{display:flex;justify-content:center;align-items:center;flex-wrap:wrap;gap:8px;margin-top:8px}.ad-side{position:fixed;top:96px;z-index:5}.ad-side--left{right:calc(50% + 446px)}.ad-side--right{left:calc(50% + 446px)}.ad-side img{max-width:160px;height:auto}@media(max-width:1220px){.ad-side{display:none}}.site-info{margin-top:24px;padding-top:8px;font-size:.85rem;color:var(--text-muted)}.site-info h2{font-size:1rem;color:var(--text);margin:24px 0 8px}.site-info p{margin:0 0 8px}.site-info__features{margin:0}.site-info__features dt{font-weight:600;color:var(--text);margin-top:10px}.site-info__features dd{margin:2px 0 0}.site-info__faq{border:1px solid var(--border);border-radius:8px;background:var(--surface);padding:8px 12px;margin-bottom:8px}.site-info__faq summary{cursor:pointer;font-weight:600;color:var(--text)}.site-info__faq p{margin:8px 0 4px}