.workspace{display:grid;gap:24px}.dropzone{position:relative;border:2px dashed var(--border-strong);border-radius:var(--radius-lg);background:linear-gradient(180deg,#fff,#fbfbff);padding:52px 24px;text-align:center;transition:border-color .18s ease,background .18s ease,box-shadow .18s ease,transform .18s ease;cursor:pointer}.dropzone:hover{border-color:var(--brand-400);background:var(--brand-gradient-soft);box-shadow:var(--shadow)}.dropzone--active{border-color:var(--brand-500);border-style:solid;background:var(--brand-gradient-soft);box-shadow:var(--ring),var(--shadow);transform:translateY(-2px)}.dropzone--disabled{opacity:.6;cursor:not-allowed}.dropzone__icon{width:64px;height:64px;margin:0 auto 20px;border-radius:20px;display:grid;place-items:center;background:var(--brand-gradient);color:#fff;box-shadow:0 10px 24px #5b6cff59}.dropzone:hover .dropzone__icon{transform:translateY(-2px) rotate(-3deg);transition:transform .2s ease}.dropzone__icon svg{width:28px;height:28px}.dropzone__title{font-size:1.1rem;font-weight:700;margin-bottom:6px}.dropzone__hint{color:var(--text-muted);font-size:.92rem;margin-bottom:20px}.dropzone__formats{margin-top:18px;color:var(--text-subtle);font-size:.82rem}.dropzone input[type=file]{display:none}.upload-state{display:grid;gap:16px;padding:36px 24px;text-align:center}.progress{height:10px;width:100%;max-width:420px;margin:0 auto;background:var(--surface-muted);border-radius:999px;overflow:hidden;border:1px solid var(--border)}.progress__bar{height:100%;background:var(--brand-gradient);border-radius:999px;transition:width .2s ease}.spinner{width:22px;height:22px;border-radius:50%;border:3px solid rgba(99,102,241,.25);border-top-color:var(--brand-600);animation:spin .8s linear infinite;margin:0 auto}@keyframes spin{to{transform:rotate(360deg)}}.original{display:grid;grid-template-columns:220px 1fr;gap:24px;align-items:start}@media (max-width: 680px){.original{grid-template-columns:1fr}}.original__thumb{border-radius:var(--radius);overflow:hidden;border:1px solid var(--border);background:var(--surface-muted);background-image:linear-gradient(45deg,#eef0f6 25%,transparent 25%),linear-gradient(-45deg,#eef0f6 25%,transparent 25%),linear-gradient(45deg,transparent 75%,#eef0f6 75%),linear-gradient(-45deg,transparent 75%,#eef0f6 75%);background-size:18px 18px;background-position:0 0,0 9px,9px -9px,-9px 0;display:grid;place-items:center;min-height:160px}.original__thumb img{width:100%;height:auto;object-fit:contain}.original__meta{display:grid;gap:14px}.original__filename{font-weight:700;font-size:1.05rem;word-break:break-word}.meta-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(120px,1fr));gap:12px}.meta-item{background:var(--surface-muted);border:1px solid var(--border);border-radius:var(--radius-sm);padding:10px 12px}.meta-item__label{font-size:.72rem;text-transform:uppercase;letter-spacing:.04em;color:var(--text-subtle);font-weight:600}.meta-item__value{font-size:.98rem;font-weight:600;margin-top:2px}.original__actions{display:flex;gap:10px;flex-wrap:wrap}.controls-row{display:grid;grid-template-columns:1fr auto;gap:20px;align-items:stretch;margin-bottom:26px}@media (max-width: 860px){.controls-row{grid-template-columns:1fr}}.dl-format{display:flex;flex-direction:column;gap:8px;justify-content:center;padding:16px 18px;border:1.5px solid var(--border);border-radius:var(--radius);background:linear-gradient(180deg,#fffdf7,#fff8ec);min-width:190px}.dl-format__label{font-size:.72rem;font-weight:700;text-transform:uppercase;letter-spacing:.05em;color:var(--accent-600)}.dl-format__hint{font-size:.78rem;color:var(--text-muted)}.segmented{display:inline-flex;padding:4px;background:#fff;border:1px solid var(--border-strong);border-radius:999px;box-shadow:var(--shadow-sm)}.segmented__btn{border:none;background:transparent;padding:7px 18px;font-size:.85rem;font-weight:700;color:var(--text-muted);border-radius:999px;transition:color .15s ease,background .15s ease,box-shadow .15s ease}.segmented__btn--active{color:#fff;background:var(--accent-gradient);box-shadow:0 4px 12px #f59e0b66}.modes{display:grid;grid-template-columns:1fr 1fr;gap:14px}@media (max-width: 560px){.modes{grid-template-columns:1fr}}.mode-card{text-align:left;border:1.5px solid var(--border);background:var(--surface);border-radius:var(--radius);padding:16px 18px;display:grid;gap:4px;transition:border-color .15s ease,background .15s ease,box-shadow .15s ease,transform .12s ease}.mode-card:hover{border-color:var(--brand-400);transform:translateY(-2px)}.mode-card--active{border-color:var(--brand-500);background:var(--brand-gradient-soft);box-shadow:var(--ring)}.mode-card__head{display:flex;align-items:center;justify-content:space-between;gap:10px}.mode-card__name{font-weight:700;font-size:1rem}.mode-card__badge{font-size:.68rem;font-weight:700;text-transform:uppercase;letter-spacing:.04em;padding:3px 8px;border-radius:999px;background:#eef0ff;color:var(--brand-700)}.mode-card__desc{color:var(--text-muted);font-size:.88rem}.mode-card__radio{width:18px;height:18px;border-radius:50%;border:2px solid var(--border-strong);display:grid;place-items:center;flex:none}.mode-card--active .mode-card__radio{border-color:var(--brand-600)}.mode-card--active .mode-card__radio:after{content:"";width:9px;height:9px;border-radius:50%;background:var(--brand-600)}.previews{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}@media (max-width: 920px){.previews{grid-template-columns:repeat(2,1fr)}}@media (max-width: 620px){.previews{grid-template-columns:1fr}}.preview-card{display:flex;flex-direction:column;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-sm);transition:transform .14s ease,box-shadow .18s ease,border-color .18s ease;animation:card-rise .5s cubic-bezier(.22,1,.36,1) both}.previews .preview-card:nth-child(2){animation-delay:.08s}.previews .preview-card:nth-child(3){animation-delay:.16s}.previews .preview-card:nth-child(4){animation-delay:.24s}.previews .preview-card:nth-child(5){animation-delay:.32s}@keyframes card-rise{0%{opacity:0;transform:translateY(16px) scale(.98)}}.preview-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:var(--brand-400)}.preview-card__header{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:14px 16px;border-bottom:1px solid var(--border);background:var(--brand-gradient-soft)}.preview-card__name{font-weight:700;font-size:.98rem;display:flex;align-items:center;gap:8px}.preview-card__name:before{content:"";width:9px;height:9px;border-radius:3px;background:var(--brand-gradient);flex:none}.preview-card__dims{font-size:.76rem;font-weight:700;color:var(--brand-700);background:#fff;border:1px solid #d9ddff;padding:4px 9px;border-radius:999px;white-space:nowrap}.preview-card__stage{background:var(--surface-muted);background-image:linear-gradient(45deg,#eaecf3 25%,transparent 25%),linear-gradient(-45deg,#eaecf3 25%,transparent 25%),linear-gradient(45deg,transparent 75%,#eaecf3 75%),linear-gradient(-45deg,transparent 75%,#eaecf3 75%);background-size:20px 20px;background-position:0 0,0 10px,10px -10px,-10px 0;display:grid;place-items:center;padding:18px;min-height:200px}.preview-card__frame{position:relative;width:100%;background:#fff;border:1px solid var(--border);border-radius:var(--radius-sm);overflow:hidden;box-shadow:var(--shadow-sm)}.preview-card__frame img{width:100%;height:100%;object-fit:contain}.preview-card__frame--loading:after{content:"";position:absolute;top:0;right:0;bottom:0;left:0;background:linear-gradient(100deg,#fff0 30%,#fff9,#fff0 70%);transform:translate(-100%);animation:shimmer 1.3s infinite}@keyframes shimmer{to{transform:translate(100%)}}.preview-card__actions{display:flex;gap:10px;padding:14px 16px;border-top:1px solid var(--border);margin-top:auto}.preview-card__actions .btn{flex:1}.preview-card__error{padding:24px 16px;color:var(--error);font-size:.88rem;text-align:center}.empty{text-align:center;padding:40px 20px 8px}.empty__row{display:flex;justify-content:center;gap:16px;margin-top:28px;flex-wrap:wrap}.empty-chip{display:grid;gap:6px;justify-items:center;width:150px;padding:18px 12px;border:1px solid var(--border);border-radius:var(--radius);background:var(--surface);box-shadow:var(--shadow-sm)}.empty-chip__frame{border:2px dashed var(--brand-400);border-radius:8px;background:var(--brand-gradient-soft)}.empty-chip__label{font-size:.82rem;font-weight:600;color:var(--text-muted)}.empty-chip__dims{font-size:.72rem;color:var(--text-subtle)}.howto{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}@media (max-width: 760px){.howto{grid-template-columns:1fr}}.howto-item{display:grid;gap:6px}.howto-item__num{width:34px;height:34px;border-radius:10px;display:grid;place-items:center;font-weight:800;font-size:.95rem;color:#fff;background:var(--brand-gradient);box-shadow:0 6px 14px #5b6cff4d}.howto-item__title{font-weight:700;font-size:.98rem}.howto-item__desc{color:var(--text-muted);font-size:.9rem}.toast-stack{position:fixed;bottom:24px;right:24px;z-index:60;display:grid;gap:10px;max-width:calc(100vw - 48px)}.toast{display:flex;align-items:flex-start;gap:10px;min-width:260px;max-width:360px;padding:12px 14px;border-radius:var(--radius);background:var(--surface);border:1px solid var(--border);box-shadow:var(--shadow-lg);font-size:.9rem;animation:toast-in .2s ease}@keyframes toast-in{0%{opacity:0;transform:translateY(8px)}}.toast__icon{flex:none;width:20px;height:20px;display:grid;place-items:center}.toast--success{border-left:4px solid var(--success)}.toast--success .toast__icon{color:var(--success)}.toast--error{border-left:4px solid var(--error)}.toast--error .toast__icon{color:var(--error)}.toast--info{border-left:4px solid var(--info)}.toast--info .toast__icon{color:var(--info)}.toast__msg{color:var(--text)}.toast__close{margin-left:auto;background:none;border:none;color:var(--text-subtle);font-size:1.1rem;line-height:1;padding:0 2px}@media (max-width: 480px){.toast-stack{left:16px;right:16px;bottom:16px}.toast{max-width:none}}:root{--brand-400: #7c8cff;--brand-500: #5b6cff;--brand-600: #4b55eb;--brand-700: #3f3fd4;--violet-500: #9333ea;--violet-600: #7e22ce;--accent-500: #f59e0b;--accent-600: #d97706;--teal-500: #0d9488;--brand-gradient: linear-gradient(135deg, #5b6cff 0%, #9333ea 55%, #c026d3 100%);--brand-gradient-soft: linear-gradient(135deg, #eef1ff 0%, #f6edff 100%);--accent-gradient: linear-gradient(135deg, #fbbf24 0%, #f59e0b 100%);--bg: #f4f5fb;--bg-elevated: #ffffff;--surface: #ffffff;--surface-muted: #f1f2fa;--border: #e5e7f2;--border-strong: #d2d6e8;--text: #16182b;--text-muted: #565b73;--text-subtle: #868ba3;--success: #0f766e;--success-bg: #e6fbf6;--success-border: #99e6d8;--error: #c0362c;--error-bg: #fdeceb;--error-border: #f3b4ae;--warning: #b45309;--warning-bg: #fff7e6;--warning-border: #f6d48a;--info: #1d4ed8;--info-bg: #e8efff;--info-border: #b7ccff;--radius-sm: 10px;--radius: 16px;--radius-lg: 22px;--radius-xl: 28px;--shadow-sm: 0 1px 2px rgba(22, 24, 43, .06);--shadow: 0 10px 30px rgba(55, 48, 163, .1);--shadow-lg: 0 24px 60px rgba(55, 48, 163, .16);--ring: 0 0 0 3px rgba(91, 108, 255, .22);--maxw: 1140px;--font: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif}*{box-sizing:border-box}html,body,#root{height:100%}body{margin:0;font-family:var(--font);color:var(--text);background-color:var(--bg);background-image:radial-gradient(42rem 42rem at 8% -8%,rgba(91,108,255,.16),transparent 60%),radial-gradient(38rem 38rem at 100% 0%,rgba(192,38,211,.12),transparent 55%),radial-gradient(44rem 44rem at 50% 118%,rgba(13,148,136,.1),transparent 60%);background-attachment:fixed;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;line-height:1.5}h1,h2,h3,h4,p{margin:0}button{font-family:inherit;cursor:pointer}a{color:var(--brand-700)}img{display:block;max-width:100%}:focus-visible{outline:2px solid var(--brand-500);outline-offset:2px;border-radius:4px}.app{display:flex;flex-direction:column;min-height:100%}.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 24px}@media (max-width: 560px){.container{padding:0 16px}}.header{position:sticky;top:0;z-index:20;background:#ffffffb8;-webkit-backdrop-filter:saturate(180%) blur(14px);backdrop-filter:saturate(180%) blur(14px);border-bottom:1px solid var(--border);box-shadow:0 1px #fff9 inset}.header__inner{display:flex;align-items:center;justify-content:space-between;height:68px}.brand{display:flex;align-items:center;gap:12px;font-weight:700;font-size:1.15rem;letter-spacing:-.01em;color:var(--text)}.brand__mark{width:38px;height:38px;border-radius:12px;display:grid;place-items:center;background:var(--brand-gradient);box-shadow:0 6px 16px #5b6cff59;position:relative}.brand__mark:after{content:"";position:absolute;top:0;right:0;bottom:0;left:0;border-radius:inherit;box-shadow:inset 0 1px 1px #ffffff80}.brand__mark svg{width:20px;height:20px}.header__tag{display:inline-flex;align-items:center;gap:8px;color:var(--brand-700);font-size:.8rem;font-weight:600;padding:6px 14px;border-radius:999px;background:var(--brand-gradient-soft);border:1px solid #e2e5ff}.header__tag-dot{width:7px;height:7px;border-radius:50%;background:var(--accent-gradient);box-shadow:0 0 0 3px #f59e0b33;flex:none}@media (max-width: 900px){.header__tag{display:none}}.hero{position:relative;padding:64px 0 30px;text-align:center;overflow:hidden}.hero:before{content:"";position:absolute;top:-120px;left:50%;transform:translate(-50%);width:min(760px,90%);height:380px;background:radial-gradient(closest-side,rgba(147,51,234,.16),rgba(91,108,255,.1) 55%,transparent 75%);filter:blur(8px);pointer-events:none;z-index:-1}.hero>.container>*{animation:rise-in .55s cubic-bezier(.22,1,.36,1) both}.hero>.container>*:nth-child(2){animation-delay:.06s}.hero>.container>*:nth-child(3){animation-delay:.12s}.hero>.container>*:nth-child(4){animation-delay:.18s}@keyframes rise-in{0%{opacity:0;transform:translateY(14px)}}@media (max-width: 640px){.hero{padding:44px 0 20px}}.hero__eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:.78rem;font-weight:700;letter-spacing:.04em;text-transform:uppercase;color:var(--brand-700);background:linear-gradient(135deg,#eef1ff,#f7edff);border:1px solid #dcdfff;padding:7px 15px;border-radius:999px;box-shadow:var(--shadow-sm)}.hero__eyebrow:before{content:"";width:7px;height:7px;border-radius:50%;background:var(--accent-gradient);box-shadow:0 0 0 3px #f59e0b38}.hero__title{font-size:clamp(2rem,4.5vw,3.1rem);line-height:1.08;letter-spacing:-.03em;font-weight:800;margin:20px auto 14px;max-width:14ch}.hero__title .grad{background:var(--brand-gradient);-webkit-background-clip:text;background-clip:text;color:transparent;position:relative}.hero__title .grad:after{content:"";position:absolute;left:0;right:0;bottom:-.06em;height:.12em;border-radius:999px;background:var(--accent-gradient);opacity:.85}.hero__subtitle{color:var(--text-muted);font-size:1.05rem;max-width:54ch;margin:0 auto}.tagline{display:flex;flex-wrap:wrap;align-items:center;justify-content:center;gap:10px 14px;margin:22px auto;padding:16px 22px;max-width:fit-content;border-radius:999px;background:#ffffffb3;border:1px solid var(--border);box-shadow:var(--shadow);-webkit-backdrop-filter:saturate(160%) blur(8px);backdrop-filter:saturate(160%) blur(8px);font-weight:800;font-size:clamp(1rem,2.1vw,1.4rem);letter-spacing:-.01em;line-height:1.2}.tagline__part{display:inline-flex;align-items:center;gap:9px;white-space:nowrap;background-clip:text;-webkit-background-clip:text;color:transparent;background-size:200% auto;animation:tagline-sheen 6s linear infinite}.tagline__part--one{background-image:linear-gradient(100deg,#4b55eb,#7c8cff,#4b55eb)}.tagline__part--two{background-image:linear-gradient(100deg,#9333ea,#c026d3,#9333ea);animation-delay:-2s}.tagline__part--three{background-image:linear-gradient(100deg,#d97706,#f59e0b,#d97706);animation-delay:-4s}@keyframes tagline-sheen{to{background-position:200% center}}.tagline__dot{width:9px;height:9px;border-radius:50%;flex:none}.tagline__part--one .tagline__dot{background:#4b55eb;box-shadow:0 0 0 4px #4b55eb2e}.tagline__part--two .tagline__dot{background:#9333ea;box-shadow:0 0 0 4px #9333ea2e}.tagline__part--three .tagline__dot{background:#f59e0b;box-shadow:0 0 0 4px #f59e0b33}.tagline__sep{width:6px;height:6px;border-radius:2px;transform:rotate(45deg);background:var(--border-strong);flex:none}@media (max-width: 560px){.tagline{flex-direction:column;border-radius:var(--radius-lg);padding:18px 20px;gap:12px}.tagline__sep{display:none}}@media (prefers-reduced-motion: reduce){.tagline__part{animation:none;background-position:0 center}}.section{padding:18px 0}.panel{position:relative;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);box-shadow:var(--shadow)}.panel:before{content:"";position:absolute;inset:0 0 auto 0;height:3px;border-radius:var(--radius-lg) var(--radius-lg) 0 0;background:var(--brand-gradient);opacity:.9}.panel--pad{padding:24px}@media (max-width: 560px){.panel--pad{padding:18px 16px}}.section-head{display:flex;align-items:baseline;justify-content:space-between;gap:16px;margin-bottom:16px;flex-wrap:wrap}.section-head h2{font-size:1.3rem;letter-spacing:-.015em;display:flex;align-items:center;gap:10px}.section-head h2:before{content:"";width:6px;height:22px;border-radius:999px;background:var(--brand-gradient);flex:none}.section-head p{color:var(--text-muted);font-size:.92rem}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:1px solid transparent;border-radius:var(--radius-sm);padding:10px 16px;font-size:.92rem;font-weight:600;transition:transform .08s ease,background .15s ease,border-color .15s ease,box-shadow .15s ease,color .15s ease;text-decoration:none;white-space:nowrap}.btn:active{transform:translateY(1px)}.btn:disabled{opacity:.55;cursor:not-allowed}.btn--primary{background:var(--brand-gradient);background-size:160% 160%;background-position:0% 50%;color:#fff;box-shadow:0 8px 20px #5b6cff57;transition:background-position .4s ease,box-shadow .15s ease,transform .08s ease}.btn--primary:hover:not(:disabled){background-position:100% 50%;box-shadow:0 10px 26px #9333ea66}.btn--ghost{background:var(--surface);color:var(--text);border-color:var(--border-strong)}.btn--ghost:hover:not(:disabled){background:var(--brand-gradient-soft);border-color:var(--brand-400);color:var(--brand-700)}.btn--subtle{background:var(--surface-muted);color:var(--text);border-color:var(--border)}.btn--subtle:hover:not(:disabled){background:#eceef6}.btn--sm{padding:8px 12px;font-size:.85rem}.btn svg{width:16px;height:16px}.footer{margin-top:auto;border-top:1px solid var(--border);background:var(--bg-elevated)}.footer__inner{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:28px 0;flex-wrap:wrap}.footer__brand{display:flex;align-items:center;gap:10px;font-weight:700}.footer__brand .brand__mark{width:28px;height:28px;border-radius:8px}.footer__brand .brand__mark svg{width:15px;height:15px}.footer p{color:var(--text-subtle);font-size:.86rem}.banner{display:flex;align-items:flex-start;gap:12px;padding:14px 16px;border-radius:var(--radius);font-size:.9rem;margin-bottom:20px;border:1px solid var(--warning-border);background:var(--warning-bg);color:var(--warning);box-shadow:var(--shadow-sm)}.banner strong{color:var(--warning)}.banner code{background:#b453091f;padding:1px 6px;border-radius:5px;font-size:.85em}.stack{display:grid;gap:24px}.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}@media (prefers-reduced-motion: reduce){*{transition:none!important;animation:none!important}}