:root{
  --bg:#f3f6f8;
  --surface:#ffffff;
  --surface-soft:#f7f9fb;
  --ink:#17211b;
  --muted:#657268;
  --line:#dce4de;
  --line-strong:#c9d5cc;
  --brand:#166534;
  --brand-dark:#0c4222;
  --brand-bright:#22c55e;
  --brand-soft:#eaf8ef;
  --accent:#dff75d;
  --danger:#b42318;
  --warning:#9a6700;
  --checker-a:#f1f4f2;
  --checker-b:#dfe5e1;
  --radius-sm:10px;
  --radius-md:16px;
  --radius-lg:24px;
  --shadow:0 12px 36px rgba(19,49,30,.08);
  --focus:0 0 0 3px rgba(34,197,94,.28);
}

*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{min-width:320px;min-height:100vh;margin:0;background:var(--bg);color:var(--ink);font-family:"Noto Sans TC","Microsoft JhengHei",system-ui,-apple-system,sans-serif;line-height:1.55;}
button,input,select{font:inherit;}
button{touch-action:manipulation;}
button:not(:disabled),label[for],.file-item{cursor:pointer;}
button:focus-visible,input:focus-visible,select:focus-visible,.file-item:focus-visible,a:focus-visible{outline:0;box-shadow:var(--focus);}
button:disabled{cursor:not-allowed;opacity:.46;}
[hidden]{display:none!important;}

.skip-link{position:fixed;z-index:1000;top:10px;left:10px;padding:10px 16px;border-radius:10px;background:#fff;color:var(--brand-dark);font-weight:800;transform:translateY(-160%);transition:transform .2s ease;}
.skip-link:focus{transform:translateY(0);}
.app-nav{position:relative;z-index:20;border-bottom:1px solid var(--line);background:rgba(255,255,255,.94);backdrop-filter:blur(12px);}
.nav-inner{display:flex;min-height:72px;align-items:center;justify-content:space-between;gap:20px;}
.brand{display:flex;align-items:center;gap:10px;color:var(--ink);font-size:1.08rem;font-weight:900;text-decoration:none;letter-spacing:.01em;}
.brand:hover{color:var(--brand);}
.brand-mark{display:grid;width:38px;height:38px;place-items:center;border-radius:12px;background:var(--brand);color:#fff;box-shadow:0 8px 20px rgba(22,101,52,.2);}
.privacy-note{display:flex;align-items:center;gap:8px;color:var(--muted);font-size:.9rem;font-weight:700;}
.privacy-note i{color:var(--brand);}

.app-shell{max-width:1440px;padding-top:24px;padding-bottom:56px;}
.hero-panel{position:relative;display:grid;grid-template-columns:minmax(0,1fr) minmax(500px,.9fr);gap:40px;align-items:center;overflow:hidden;margin-bottom:24px;padding:44px 48px;border-radius:var(--radius-lg);background:linear-gradient(118deg,#0d2d1a 0%,#155e34 60%,#148649 100%);box-shadow:0 20px 54px rgba(12,66,34,.18);color:#fff;}
.hero-panel:before,.hero-panel:after{position:absolute;border:1px solid rgba(223,247,93,.14);border-radius:50%;content:"";pointer-events:none;}
.hero-panel:before{right:-110px;bottom:-210px;width:430px;height:430px;}
.hero-panel:after{right:40px;bottom:-260px;width:500px;height:500px;}
.hero-copy,.hero-flow{position:relative;z-index:1;}
.eyebrow{display:flex;align-items:center;gap:9px;margin:0 0 12px;color:#d9f99d;font-size:.76rem;font-weight:900;letter-spacing:.15em;text-transform:uppercase;}
.eyebrow span{width:22px;height:2px;background:var(--accent);}
.hero-copy h1{max-width:760px;margin:0 0 14px;font-size:clamp(2rem,3.5vw,3.35rem);font-weight:900;line-height:1.16;letter-spacing:-.035em;}
.hero-copy h1 em{color:var(--accent);font-style:normal;}
.hero-copy>p:not(.eyebrow){max-width:690px;margin:0;color:rgba(255,255,255,.78);font-size:1rem;line-height:1.75;}
.hero-points{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px;}
.hero-points span{display:inline-flex;align-items:center;gap:7px;padding:7px 11px;border:1px solid rgba(255,255,255,.18);border-radius:999px;background:rgba(255,255,255,.08);color:rgba(255,255,255,.9);font-size:.82rem;font-weight:800;}
.hero-points i{color:var(--accent);}
.hero-flow{display:grid;grid-template-columns:1fr auto 1fr auto 1fr;align-items:center;gap:10px;}
.hero-flow>div{min-height:132px;padding:18px;border:1px solid rgba(255,255,255,.16);border-radius:18px;background:rgba(255,255,255,.1);backdrop-filter:blur(8px);}
.hero-flow>b{font-variant-numeric:tabular-nums;}
.hero-flow b{display:grid;width:36px;height:36px;place-items:center;margin-bottom:16px;border-radius:50%;background:var(--accent);color:var(--brand-dark);font-size:.75rem;font-weight:900;}
.hero-flow strong,.hero-flow small{display:block;}
.hero-flow strong{font-size:.94rem;}
.hero-flow small{margin-top:3px;color:rgba(255,255,255,.66);font-size:.76rem;}
.hero-flow>i{color:rgba(255,255,255,.38);font-size:.8rem;}

.workspace-grid{display:grid;grid-template-columns:360px minmax(0,1fr);gap:24px;align-items:start;}
.settings-column,.workbench-column{min-width:0;}
.tool-panel{margin-bottom:18px;padding:22px;border:1px solid var(--line);border-radius:var(--radius-md);background:var(--surface);box-shadow:0 7px 24px rgba(20,47,30,.045);}
.panel-heading{display:flex;align-items:flex-start;gap:12px;margin-bottom:18px;}
.panel-heading h2,.workbench-heading h2{margin:0;font-size:1.08rem;font-weight:900;letter-spacing:-.01em;}
.panel-heading p,.workbench-heading p{margin:3px 0 0;color:var(--muted);font-size:.84rem;line-height:1.55;}
.compact-heading{margin-bottom:14px;}
.step-tag{display:grid;flex:0 0 36px;width:36px;height:28px;place-items:center;border-radius:9px;background:var(--brand-soft);color:var(--brand);font-size:.72rem;font-weight:900;font-variant-numeric:tabular-nums;}

.drop-zone{position:relative;display:flex;min-height:156px;align-items:center;justify-content:center;flex-direction:column;gap:7px;padding:22px;border:1.5px dashed #a9bcb0;border-radius:14px;background:var(--surface-soft);text-align:center;transition:border-color .2s ease,background-color .2s ease,box-shadow .2s ease;}
.drop-zone:hover,.drop-zone.is-drag{border-color:var(--brand-bright);background:var(--brand-soft);box-shadow:inset 0 0 0 1px var(--brand-bright);}
.drop-zone input{position:absolute;inset:0;width:100%;height:100%;opacity:0;cursor:pointer;}
.upload-icon{display:grid;width:48px;height:48px;place-items:center;margin-bottom:4px;border-radius:14px;background:var(--brand);color:#fff;font-size:1.15rem;box-shadow:0 8px 22px rgba(22,101,52,.22);}
.drop-zone strong{font-size:.96rem;}
.drop-zone>span:last-child{color:var(--muted);font-size:.8rem;}
.field-message{min-height:0;margin-top:7px;color:var(--danger);font-size:.78rem;font-weight:700;}
.field-message:not(:empty){min-height:20px;}
.list-heading{display:flex;align-items:center;justify-content:space-between;margin:14px 0 9px;color:var(--ink);font-size:.85rem;font-weight:850;}
.list-heading b{display:inline-grid;min-width:22px;height:22px;place-items:center;margin-left:4px;border-radius:7px;background:#edf1ee;color:var(--muted);font-size:.72rem;}
.text-btn{min-height:44px;padding:5px 8px;border:0;border-radius:9px;background:transparent;color:var(--muted);font-size:.8rem;font-weight:800;}
.text-btn:hover{background:#f1f4f2;color:var(--ink);}
.text-btn.danger:hover{background:#fff0ef;color:var(--danger);}
.file-list{display:grid;gap:8px;max-height:258px;overflow:auto;overscroll-behavior:contain;}
.file-list.empty-state{min-height:74px;}
.file-item{display:grid;grid-template-columns:48px minmax(0,1fr) 44px;gap:10px;align-items:center;padding:7px;border:1px solid var(--line);border-radius:12px;background:#fff;transition:border-color .18s ease,background-color .18s ease;}
.file-item:hover{border-color:var(--line-strong);background:#fbfcfb;}
.file-item.active{border-color:var(--brand-bright);background:var(--brand-soft);box-shadow:inset 3px 0 0 var(--brand);}
.file-thumb{width:48px;height:48px;border-radius:9px;background-image:linear-gradient(45deg,var(--checker-b) 25%,transparent 25%),linear-gradient(-45deg,var(--checker-b) 25%,transparent 25%),linear-gradient(45deg,transparent 75%,var(--checker-b) 75%),linear-gradient(-45deg,transparent 75%,var(--checker-b) 75%);background-size:12px 12px;background-position:0 0,0 6px,6px -6px,-6px 0;object-fit:cover;}
.file-info{min-width:0;}
.file-info strong,.file-info span{display:block;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.file-info strong{font-size:.82rem;}
.file-info span{color:var(--muted);font-size:.72rem;font-variant-numeric:tabular-nums;}
.icon-btn{display:grid;width:44px;height:44px;place-items:center;border:0;border-radius:10px;background:transparent;color:var(--muted);}
.icon-btn:hover{background:#fff0ef;color:var(--danger);}

.segmented{display:grid;grid-template-columns:1fr 1fr;gap:4px;margin-bottom:18px;padding:4px;border:1px solid var(--line);border-radius:13px;background:#eef2ef;}
.segment-btn{min-height:44px;border:0;border-radius:9px;background:transparent;color:var(--muted);font-size:.84rem;font-weight:900;transition:background-color .18s ease,color .18s ease,box-shadow .18s ease;}
.segment-btn.active{background:#fff;color:var(--brand);box-shadow:0 2px 8px rgba(22,52,31,.1);}
.mode-options{animation:fade-in .2s ease;}
.control-block{margin-bottom:16px;}
.form-label{margin:0 0 7px;color:#465449;font-size:.8rem;font-weight:850;}
.form-control,.form-select{min-height:44px;border-color:var(--line-strong);border-radius:10px;color:var(--ink);font-size:.85rem;}
.form-control:focus,.form-select:focus{border-color:var(--brand-bright);box-shadow:var(--focus);}
.color-row{display:grid;grid-template-columns:48px 1fr 1.25fr;gap:8px;}
.form-control-color{width:48px;height:44px;padding:5px;}
.control-btn,.primary-btn{display:inline-flex;min-height:44px;align-items:center;justify-content:center;gap:7px;padding:9px 12px;border-radius:10px;font-size:.82rem;font-weight:850;transition:background-color .18s ease,border-color .18s ease,color .18s ease,box-shadow .18s ease;}
.control-btn{border:1px solid var(--line-strong);background:#fff;color:#435247;}
.control-btn:hover:not(:disabled),.control-btn.active{border-color:#96b5a0;background:var(--brand-soft);color:var(--brand);}
.primary-btn{border:1px solid var(--brand);background:var(--brand);color:#fff;box-shadow:0 8px 20px rgba(22,101,52,.2);}
.primary-btn:hover:not(:disabled){border-color:var(--brand-dark);background:var(--brand-dark);color:#fff;}
.helper-text{display:block;margin-top:7px;color:var(--muted);font-size:.72rem;line-height:1.5;}
.label-row{display:flex;align-items:center;justify-content:space-between;}
.label-row output{min-width:34px;padding:2px 7px;border-radius:7px;background:var(--brand-soft);color:var(--brand);font-size:.75rem;font-weight:900;text-align:center;font-variant-numeric:tabular-nums;}
.form-range{height:20px;margin:0;accent-color:var(--brand);}
.range-scale{display:flex;justify-content:space-between;color:#7a867d;font-size:.68rem;}
.two-inputs{display:grid;grid-template-columns:1fr 1fr;gap:10px;}
.input-suffix{position:relative;}
.input-suffix input{padding-right:34px;}
.input-suffix span{position:absolute;top:50%;right:11px;color:var(--muted);font-size:.72rem;transform:translateY(-50%);pointer-events:none;}
.preset-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:7px;}
.preset-btn{min-height:52px;padding:7px;border:1px solid var(--line);border-radius:10px;background:#fff;color:var(--ink);}
.preset-btn strong,.preset-btn span{display:block;}
.preset-btn strong{font-size:.82rem;}
.preset-btn span{margin-top:1px;color:var(--muted);font-size:.66rem;}
.preset-btn:hover,.preset-btn.active{border-color:var(--brand-bright);background:var(--brand-soft);color:var(--brand);}
.custom-grid-inputs,.custom-size{margin-top:10px;}
.size-options{display:grid;grid-template-columns:1fr 1fr;gap:7px;}
.size-btn{min-height:43px;padding:7px;border:1px solid var(--line);border-radius:10px;background:#fff;color:#435247;font-size:.78rem;font-weight:850;}
.size-btn:hover,.size-btn.active{border-color:var(--brand-bright);background:var(--brand-soft);color:var(--brand);}
.switch-row{display:flex;min-height:58px;align-items:center;justify-content:space-between;gap:14px;border-top:1px solid var(--line);}
.switch-row strong,.switch-row small{display:block;}
.switch-row strong{font-size:.82rem;}
.switch-row small{margin-top:2px;color:var(--muted);font-size:.7rem;}
.switch{position:relative;flex:0 0 auto;width:46px;height:26px;}
.switch input{position:absolute;width:1px;height:1px;opacity:0;}
.switch span{position:absolute;inset:0;border:1px solid #bbc8bf;border-radius:999px;background:#dce3de;transition:.2s ease;}
.switch span:before{position:absolute;top:3px;left:3px;width:18px;height:18px;border-radius:50%;background:#fff;box-shadow:0 1px 4px rgba(0,0,0,.18);content:"";transition:transform .2s ease;}
.switch input:checked+span{border-color:var(--brand);background:var(--brand);}
.switch input:checked+span:before{transform:translateX(20px);}
.switch input:focus-visible+span{box-shadow:var(--focus);}

.source-panel{padding:24px;}
.workbench-heading{display:flex;align-items:flex-start;justify-content:space-between;gap:20px;margin-bottom:16px;}
.section-kicker{display:block;margin-bottom:3px;color:var(--brand);font-size:.67rem;font-weight:900;letter-spacing:.13em;}
.source-meta{padding:6px 10px;border-radius:9px;background:#f0f4f1;color:var(--muted);font-size:.76rem;font-weight:800;font-variant-numeric:tabular-nums;}
.source-stage{position:relative;display:flex;min-height:420px;align-items:center;justify-content:center;overflow:hidden;border:1px solid var(--line);border-radius:14px;background-color:#e9eeeb;background-image:linear-gradient(45deg,var(--checker-b) 25%,transparent 25%),linear-gradient(-45deg,var(--checker-b) 25%,transparent 25%),linear-gradient(45deg,transparent 75%,var(--checker-b) 75%),linear-gradient(-45deg,transparent 75%,var(--checker-b) 75%);background-size:24px 24px;background-position:0 0,0 12px,12px -12px,-12px 0;}
.source-stage.empty-source{background:#f7f9f8;}
.source-stage.is-picking{cursor:crosshair;box-shadow:inset 0 0 0 3px var(--brand-bright);}
.source-stage>img{display:block;max-width:100%;max-height:620px;object-fit:contain;user-select:none;-webkit-user-drag:none;}
.source-empty{display:flex;min-height:420px;align-items:center;justify-content:center;flex-direction:column;padding:40px;text-align:center;}
.source-empty>span{display:grid;width:70px;height:70px;place-items:center;margin-bottom:14px;border:1px solid var(--line);border-radius:22px;background:#fff;color:#8a978d;font-size:1.7rem;box-shadow:var(--shadow);}
.source-empty strong{font-size:1rem;}
.source-empty small{margin-top:6px;color:var(--muted);font-size:.8rem;}
.guide-layer{position:absolute;pointer-events:none;}
.guide-box{position:absolute;border:2px solid var(--brand-bright);background:rgba(34,197,94,.06);box-shadow:0 0 0 1px rgba(255,255,255,.75) inset;}
.guide-box span{position:absolute;top:-1px;left:-1px;display:grid;min-width:25px;height:25px;place-items:center;padding:0 5px;border-radius:0 0 8px 0;background:var(--brand);color:#fff;font-size:.68rem;font-weight:900;font-variant-numeric:tabular-nums;}
.grid-line{position:absolute;background:rgba(34,197,94,.92);box-shadow:0 0 0 1px rgba(255,255,255,.55);}
.grid-line.vertical{top:0;bottom:0;width:2px;transform:translateX(-1px);}
.grid-line.horizontal{right:0;left:0;height:2px;transform:translateY(-1px);}
.grid-number{position:absolute;display:grid;width:24px;height:24px;place-items:center;border-radius:7px;background:rgba(12,66,34,.9);color:#fff;font-size:.64rem;font-weight:900;transform:translate(-50%,-50%);}
.preview-footer{display:flex;align-items:center;justify-content:space-between;gap:14px;margin-top:12px;}
.legend{display:flex;flex-wrap:wrap;gap:16px;color:var(--muted);font-size:.73rem;font-weight:700;}
.legend span{display:flex;align-items:center;gap:6px;}
.legend-box{width:17px;height:13px;border:2px solid var(--brand-bright);border-radius:3px;background:rgba(34,197,94,.08);}
.legend-number{display:grid;width:18px;height:18px;place-items:center;border-radius:5px;background:var(--brand);color:#fff;font-size:.6rem;font-style:normal;}

.result-panel{padding:24px;}
.result-heading{align-items:center;}
.result-summary{display:flex;min-width:88px;align-items:baseline;justify-content:center;gap:4px;padding:10px 12px;border-radius:12px;background:var(--brand-soft);color:var(--brand);}
.result-summary strong{font-size:1.45rem;line-height:1;font-variant-numeric:tabular-nums;}
.result-summary span{font-size:.7rem;font-weight:800;}
.result-toolbar{display:grid;grid-template-columns:auto auto 1fr;gap:9px;margin-bottom:15px;}
.progress-wrap{display:flex;align-items:center;gap:10px;margin:0 0 14px;color:var(--muted);font-size:.76rem;font-weight:800;}
.progress-track{flex:1;height:7px;overflow:hidden;border-radius:999px;background:#e5ebe7;}
.progress-track span{display:block;width:0;height:100%;border-radius:inherit;background:linear-gradient(90deg,var(--brand),var(--brand-bright));transition:width .2s ease;}
.result-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px;}
.result-grid.empty-state{min-height:230px;}
.piece-card{position:relative;overflow:hidden;border:1px solid var(--line);border-radius:13px;background:#fff;transition:border-color .18s ease,box-shadow .18s ease,opacity .18s ease;}
.piece-card:hover{border-color:#a7b9ac;box-shadow:0 9px 24px rgba(23,55,34,.09);}
.piece-card.excluded{opacity:.48;}
.piece-select{position:absolute;z-index:2;top:8px;left:8px;display:grid;width:30px;height:30px;place-items:center;border:1px solid rgba(12,66,34,.18);border-radius:9px;background:rgba(255,255,255,.92);box-shadow:0 2px 8px rgba(0,0,0,.09);}
.piece-select input{width:17px;height:17px;margin:0;accent-color:var(--brand);cursor:pointer;}
.piece-index{position:absolute;z-index:2;top:8px;right:8px;display:grid;min-width:29px;height:29px;place-items:center;padding:0 6px;border-radius:9px;background:rgba(12,66,34,.9);color:#fff;font-size:.68rem;font-weight:900;font-variant-numeric:tabular-nums;}
.piece-preview{display:grid;aspect-ratio:1/1;place-items:center;background-color:var(--checker-a);background-image:linear-gradient(45deg,var(--checker-b) 25%,transparent 25%),linear-gradient(-45deg,var(--checker-b) 25%,transparent 25%),linear-gradient(45deg,transparent 75%,var(--checker-b) 75%),linear-gradient(-45deg,transparent 75%,var(--checker-b) 75%);background-size:16px 16px;background-position:0 0,0 8px,8px -8px,-8px 0;}
.piece-preview img{display:block;width:100%;height:100%;object-fit:contain;}
.piece-meta{display:flex;align-items:center;justify-content:space-between;gap:6px;padding:8px;}
.piece-meta>span{min-width:0;}
.piece-meta strong,.piece-meta small{display:block;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.piece-meta strong{font-size:.7rem;}
.piece-meta small{margin-top:1px;color:var(--muted);font-size:.62rem;font-variant-numeric:tabular-nums;}
.download-piece{display:grid;flex:0 0 44px;width:44px;height:44px;place-items:center;border:1px solid var(--line);border-radius:9px;background:#fff;color:var(--brand);}
.download-piece:hover{border-color:var(--brand-bright);background:var(--brand-soft);}
.size-warning{color:var(--warning)!important;font-weight:800;}
.empty-state{display:flex;align-items:center;justify-content:center;flex-direction:column;gap:8px;border:1px dashed var(--line-strong);border-radius:12px;color:#839087;text-align:center;}
.empty-state i{font-size:1.35rem;}
.empty-state span{font-size:.8rem;}

.line-note{display:flex;align-items:flex-start;gap:12px;padding:17px 20px;border:1px solid #cae7d4;border-radius:14px;background:var(--brand-soft);color:var(--brand-dark);}
.line-note>i{margin-top:4px;color:var(--brand);}
.line-note strong{font-size:.86rem;}
.line-note p{margin:3px 0 0;color:#4f6856;font-size:.76rem;line-height:1.55;}
.toast-message{position:fixed;z-index:100;right:22px;bottom:22px;max-width:min(360px,calc(100vw - 32px));padding:12px 16px;border-radius:12px;background:#102218;color:#fff;box-shadow:0 16px 42px rgba(0,0,0,.2);font-size:.84rem;font-weight:750;animation:toast-in .22s ease;}
.app-footer{border-top:1px solid var(--line);background:#fff;color:var(--muted);font-size:.78rem;}
.app-footer .container{display:flex;min-height:68px;align-items:center;justify-content:space-between;gap:18px;}
.app-footer i{margin-right:6px;color:var(--brand);}
.footer-links{display:flex;align-items:center;gap:16px;}
.footer-links a{display:inline-flex;min-height:44px;align-items:center;gap:6px;padding:0 10px;border-radius:9px;color:var(--brand);font-weight:850;text-decoration:none;transition:background-color .18s ease,color .18s ease;}
.footer-links a i{margin:0;font-size:.68rem;transition:transform .18s ease;}
.footer-links a:hover{background:var(--brand-soft);color:var(--brand-dark);}
.footer-links a:hover i{transform:translateX(2px);}

@keyframes fade-in{from{opacity:0;transform:translateY(3px)}to{opacity:1;transform:none}}
@keyframes toast-in{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}

@media (max-width:1199.98px){
  .hero-panel{grid-template-columns:1fr;padding:38px 40px;}
  .hero-flow{max-width:720px;}
  .workspace-grid{grid-template-columns:330px minmax(0,1fr);gap:18px;}
  .result-grid{grid-template-columns:repeat(3,minmax(0,1fr));}
}

@media (max-width:991.98px){
  .workspace-grid{grid-template-columns:1fr;}
  .settings-column{display:grid;grid-template-columns:1fr 1fr;gap:18px;align-items:start;}
  .settings-column .tool-panel{margin-bottom:0;}
  .upload-panel{grid-row:span 2;}
  .source-stage{min-height:360px;}
}

@media (max-width:767.98px){
  .app-shell{padding-top:14px;padding-bottom:36px;}
  .hero-panel{gap:26px;padding:30px 24px;border-radius:18px;}
  .hero-flow{grid-template-columns:1fr;gap:8px;}
  .hero-flow>div{display:grid;grid-template-columns:36px 1fr;gap:11px;align-items:center;min-height:0;padding:12px 14px;}
  .hero-flow b{margin:0;}
  .hero-flow>i{display:none;}
  .settings-column{grid-template-columns:1fr;}
  .upload-panel{grid-row:auto;}
  .source-stage,.source-empty{min-height:300px;}
  .result-grid{grid-template-columns:repeat(3,minmax(0,1fr));}
}

@media (max-width:575.98px){
  .nav-inner{min-height:62px;}
  .privacy-note span{display:none;}
  .app-shell{padding-right:12px;padding-left:12px;}
  .hero-panel{padding:25px 20px;}
  .hero-copy h1{font-size:1.95rem;}
  .hero-points{gap:6px;}
  .hero-points span{font-size:.72rem;}
  .tool-panel{padding:17px;border-radius:14px;}
  .source-panel,.result-panel{padding:17px;}
  .workbench-heading{gap:10px;}
  .source-meta{font-size:.68rem;}
  .source-stage,.source-empty{min-height:240px;}
  .source-stage>img{max-height:460px;}
  .preview-footer{align-items:flex-start;flex-direction:column;}
  .preview-footer .control-btn{width:100%;}
  .result-toolbar{grid-template-columns:1fr 1fr;}
  .result-toolbar .primary-btn{grid-column:1/-1;grid-row:1;}
  .result-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:9px;}
  .result-summary{min-width:70px;}
  .result-summary strong{font-size:1.2rem;}
  .line-note{padding:14px;}
  .app-footer .container{min-height:82px;align-items:flex-start;justify-content:center;flex-direction:column;gap:3px;padding-top:14px;padding-bottom:14px;}
  .footer-links{width:100%;align-items:flex-start;flex-direction:column;gap:0;}
  .footer-links a{margin-left:-10px;}
  .toast-message{right:16px;bottom:16px;}
}

@media (prefers-reduced-motion:reduce){
  *,*:before,*:after{scroll-behavior:auto!important;animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important;}
}