/* ImgLeaf - green, simple, fast */
:root{
  --g50:#f0fdf4;--g100:#dcfce7;--g200:#bbf7d0;--g300:#86efac;--g500:#22c55e;--g600:#16a34a;--g700:#15803d;--g800:#166534;--g900:#14532d;
  --ink:#0f172a;--text:#1e293b;--muted:#526077;--line:#e2e8f0;--soft:#f8fafc;--white:#fff;
  --warn-bg:#fffbeb;--warn-line:#fcd34d;--err:#b91c1c;
  --radius:14px;--shadow:0 1px 2px rgba(15,23,42,.06),0 8px 24px rgba(15,23,42,.06);
  --font:system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
[hidden]{display:none!important}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:80px}
body{margin:0;font-family:var(--font);font-size:17px;line-height:1.65;color:var(--text);background:var(--white)}
img,svg,canvas,video{max-width:100%;height:auto}
a{color:var(--g700);text-underline-offset:3px}
a:hover{color:var(--g800)}
h1,h2,h3,h4{color:var(--ink);line-height:1.25;margin:1.6em 0 .6em}
h1{font-size:clamp(1.8rem,4vw,2.6rem);margin:.3em 0 .4em;letter-spacing:-.02em}
h2{font-size:clamp(1.35rem,2.6vw,1.75rem);letter-spacing:-.01em}
h3{font-size:1.2rem}
p{margin:0 0 1em}
code{background:var(--g50);border:1px solid var(--g100);padding:.1em .35em;border-radius:6px;font-size:.9em}
.wrap{max-width:1120px;margin:0 auto;padding:0 16px}
.wrap-narrow{max-width:780px;margin:0 auto;padding:0 16px}
.skip{position:absolute;left:-999px;top:8px;background:var(--g700);color:#fff;padding:8px 14px;border-radius:8px;z-index:99}
.skip:focus{left:8px}

/* Header */
.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.96);backdrop-filter:saturate(1.4) blur(8px);border-bottom:1px solid var(--line)}
.header-inner{display:flex;align-items:center;gap:16px;height:64px}
.logo{display:inline-flex;align-items:center;gap:9px;font-weight:800;font-size:1.55rem;color:var(--ink);text-decoration:none;letter-spacing:-.02em}
.logo-mark{width:38px;height:38px;flex:none}
.site-nav{margin-left:auto}
.site-nav ul{list-style:none;margin:0;padding:0;display:flex;gap:2px}
.site-nav li{position:relative}
.nav-top{display:block;padding:8px 10px;border-radius:9px;color:var(--text);text-decoration:none;font-weight:600;font-size:1.1rem;white-space:nowrap}
.nav-top:hover,.site-nav li.active>.nav-top{background:var(--g50);color:var(--g800)}
.nav-drop{display:none;position:absolute;top:100%;left:0;min-width:220px;background:#fff;border:1px solid var(--line);border-radius:12px;box-shadow:var(--shadow);padding:8px;z-index:60;max-height:274px;overflow-y:auto;overscroll-behavior:contain;scrollbar-width:thin;scrollbar-color:var(--g300) transparent}
.nav-drop::-webkit-scrollbar{width:6px}.nav-drop::-webkit-scrollbar-thumb{background:var(--g300);border-radius:6px}
.nav-drop:empty{display:none!important}
.nav-drop a{display:block;padding:7px 10px;border-radius:8px;color:var(--text);text-decoration:none;font-size:1.02rem}
.nav-drop a:hover{background:var(--g50);color:var(--g800)}
.site-nav li:hover>.nav-drop,.site-nav li:focus-within>.nav-drop{display:block}
.site-nav li:nth-last-child(-n+4) .nav-drop{left:auto;right:0}
.nav-toggle{display:none;margin-left:auto;background:none;border:0;padding:10px;cursor:pointer;border-radius:10px}
.nav-toggle span{display:block;width:22px;height:2px;background:var(--ink);margin:5px 0;border-radius:2px;transition:.2s}
@media (max-width:1000px){
  .nav-toggle{display:block}
  .site-nav{display:none;position:absolute;top:64px;left:0;right:0;background:#fff;border-bottom:1px solid var(--line);max-height:calc(100vh - 64px);overflow:auto;box-shadow:var(--shadow)}
  .site-nav.open{display:block}
  .site-nav ul{flex-direction:column;padding:8px 16px 16px}
  .nav-top{padding:12px 8px;font-size:1rem;border-bottom:1px solid var(--line);border-radius:0}
  .nav-drop{display:none!important}
  .nav-toggle[aria-expanded=true] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
  .nav-toggle[aria-expanded=true] span:nth-child(2){opacity:0}
  .nav-toggle[aria-expanded=true] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
}

/* Breadcrumbs + head */
.crumbs{font-size:.88rem;color:var(--muted);padding:18px 0 4px}
.crumbs a{color:var(--muted);text-decoration:none}
.crumbs a:hover{color:var(--g700);text-decoration:underline}
.crumbs .sep{margin:0 6px;opacity:.6}
.page-head{text-align:center;max-width:760px;margin:0 auto 22px}
.lead{font-size:1.12rem;color:var(--muted);margin:0}

/* Tool box */
.tool{background:linear-gradient(180deg,var(--g50),#fff 220px);border:1px solid var(--g200);border-radius:20px;padding:22px;box-shadow:var(--shadow);max-width:960px;margin:0 auto;min-height:260px}
.tool-loading{display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:220px;color:var(--muted)}
.spinner{width:34px;height:34px;border:3px solid var(--g200);border-top-color:var(--g600);border-radius:50%;animation:spin .8s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
.drop{border:2px dashed var(--g300);border-radius:16px;background:#fff;padding:34px 18px;text-align:center;cursor:pointer;transition:.15s}
.drop:hover,.drop.over{border-color:var(--g600);background:var(--g50)}
.drop-icon{width:56px;height:56px;margin:0 auto 10px;color:var(--g600)}
.drop p{margin:.35em 0;color:var(--muted)}
.drop .drop-main{font-size:1.1rem;color:var(--ink);font-weight:600}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:0;border-radius:11px;background:var(--g600);color:#fff;font:600 1rem/1 var(--font);padding:13px 22px;cursor:pointer;text-decoration:none;transition:.15s;min-height:46px}
.btn:hover{background:var(--g700);color:#fff}
.btn:disabled{opacity:.5;cursor:not-allowed}
.btn.big{font-size:1.08rem;padding:15px 28px}
.btn.ghost{background:#fff;color:var(--g800);border:1px solid var(--g300)}
.btn.ghost:hover{background:var(--g50)}
.btn.small{padding:8px 14px;font-size:.9rem;min-height:36px;border-radius:9px}
.btn-row{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;margin-top:16px}
.opts{display:flex;flex-wrap:wrap;gap:14px 22px;align-items:flex-end;justify-content:center;margin:18px 0 4px;padding:14px;background:#fff;border:1px solid var(--line);border-radius:14px}
.opt{display:flex;flex-direction:column;gap:5px;font-size:.9rem;color:var(--muted);font-weight:600;min-width:120px}
.opt.row{flex-direction:row;align-items:center;gap:8px;min-width:0}
.opt select,.opt input[type=number],.opt input[type=text],.opt input[type=color]{font:inherit;font-size:.98rem;color:var(--ink);padding:9px 10px;border:1px solid #cbd5e1;border-radius:9px;background:#fff;min-height:42px}
.opt input[type=number]{width:110px}
.opt input[type=color]{padding:3px;width:56px;height:42px}
.opt input[type=range]{accent-color:var(--g600);width:170px}
.opt input[type=checkbox]{accent-color:var(--g600);width:18px;height:18px}
.opt output{color:var(--ink);font-weight:700}
.seg{display:inline-flex;flex-wrap:wrap;border:1px solid var(--g300);border-radius:10px;overflow:hidden;background:#fff}
.seg button{border:0;background:none;padding:9px 14px;font:600 .92rem var(--font);color:var(--g800);cursor:pointer;border-right:1px solid var(--g200)}
.seg button:last-child{border-right:0}
.seg button.on{background:var(--g600);color:#fff}
.files{list-style:none;margin:16px 0 0;padding:0;display:grid;gap:10px}
.file{display:grid;grid-template-columns:56px 1fr auto;gap:12px;align-items:center;background:#fff;border:1px solid var(--line);border-radius:12px;padding:10px}
.file img,.file canvas{width:56px;height:56px;object-fit:cover;border-radius:8px;background:repeating-conic-gradient(#eef2f7 0 25%,#fff 0 50%) 0 0/14px 14px}
.file-name{font-weight:600;color:var(--ink);word-break:break-all;font-size:.95rem;line-height:1.35}
.file-meta{font-size:.85rem;color:var(--muted)}
.file-meta .good{color:var(--g700);font-weight:700}
.file-meta .bad{color:var(--err);font-weight:600}
.file-actions{display:flex;gap:6px;align-items:center}
.icon-btn{border:1px solid var(--line);background:#fff;border-radius:8px;width:36px;height:36px;cursor:pointer;color:var(--muted);font-size:1rem}
.icon-btn:hover{border-color:var(--g300);color:var(--g700)}
.bar{height:6px;background:var(--g100);border-radius:6px;overflow:hidden;margin-top:6px}
.bar i{display:block;height:100%;width:0;background:var(--g600);transition:width .2s}
.notice{background:var(--warn-bg);border:1px solid var(--warn-line);border-radius:12px;padding:10px 14px;font-size:.92rem;margin-top:12px}
.error{color:var(--err)}
.stage{position:relative;background:repeating-conic-gradient(#eef2f7 0 25%,#fff 0 50%) 0 0/18px 18px;border:1px solid var(--line);border-radius:14px;overflow:hidden;display:flex;align-items:center;justify-content:center;min-height:240px;max-height:520px}
.stage canvas,.stage img,.stage video{max-height:500px;width:auto;max-width:100%;display:block}
.stage.cropping{display:block;max-height:none}
.stage.cropping img{max-height:none}
.stage.cropping{background:#f1f5f9}
.stage.circle .cropper-view-box,.stage.circle .cropper-face{border-radius:50%}
.stage.circle .cropper-view-box{outline:0;box-shadow:0 0 0 2px #16a34a}
.cropper-line,.cropper-point{background-color:#16a34a!important}
.cropper-view-box{outline-color:#16a34a!important}
.cmp{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.cmp figure{margin:0}
.cmp figcaption{text-align:center;font-size:.85rem;color:var(--muted);margin-top:4px}
@media (max-width:640px){.cmp{grid-template-columns:1fr}}
.result-box{margin-top:16px}
.result-box textarea{width:100%;min-height:220px;font:15px/1.5 ui-monospace,Consolas,monospace;padding:12px;border:1px solid #cbd5e1;border-radius:12px}
.calc{display:grid;gap:14px;max-width:560px;margin:0 auto}
.calc .big-out{font-size:2rem;font-weight:800;color:var(--g800);text-align:center;background:#fff;border:1px solid var(--g200);border-radius:14px;padding:14px}
.thumbs{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px}
.thumbs .th{position:relative;width:96px;text-align:center;font-size:.75rem;color:var(--muted)}
.thumbs .th img,.thumbs .th canvas{width:96px;height:96px;object-fit:contain;border:1px solid var(--line);border-radius:8px;background:repeating-conic-gradient(#eef2f7 0 25%,#fff 0 50%) 0 0/12px 12px}
.thumbs .th .x{position:absolute;top:-6px;right:-6px;width:24px;height:24px;border-radius:50%;border:0;background:var(--ink);color:#fff;cursor:pointer;font-size:.8rem}
.thumbs .th .mv{display:flex;justify-content:center;gap:4px;margin-top:2px}
.thumbs .th .mv button{border:1px solid var(--line);background:#fff;border-radius:6px;cursor:pointer;width:28px;height:24px}
.swatches{display:flex;flex-wrap:wrap;gap:8px}
.swatches button{width:34px;height:34px;border-radius:50%;border:2px solid #fff;box-shadow:0 0 0 1px #cbd5e1;cursor:pointer}
.swatches button.on{box-shadow:0 0 0 3px var(--g600)}
.trust{list-style:none;display:flex;flex-wrap:wrap;justify-content:center;gap:8px 22px;padding:0;margin:14px auto 0;font-size:.9rem;color:var(--muted)}
.drop-free{margin:10px 0 0;font-size:.85rem;font-weight:700;color:var(--g600)}
.trust li::before{content:"\2713";color:var(--g600);font-weight:800;margin-right:6px}

/* Content */
.content-wrap{max-width:820px;margin:40px auto 0}
.prose>h2:first-child{margin-top:.4em}
.prose ul,.prose ol{padding-left:1.3em;margin:0 0 1.1em}
.prose li{margin:.3em 0}
.prose figure{margin:1.6em 0;text-align:center}
.prose figure img{border-radius:12px;border:1px solid var(--line);width:100%}
.prose figcaption,.post figcaption{font-size:.88rem;color:var(--muted);margin-top:6px}
.post>figure{margin:1.2em 0}
.post>figure img{border-radius:14px;border:1px solid var(--line);width:100%}
.table-wrap{overflow-x:auto;margin:1.2em 0;border:1px solid var(--line);border-radius:12px}
table{border-collapse:collapse;width:100%;font-size:.95rem}
th,td{padding:10px 12px;text-align:left;border-bottom:1px solid var(--line);vertical-align:top}
th{background:var(--g50);color:var(--ink);font-weight:700}
tr:last-child td{border-bottom:0}
.callout{border-left:4px solid var(--g600);background:var(--g50);border-radius:0 12px 12px 0;padding:14px 16px;margin:1.4em 0}
.callout p:last-child{margin:0}
.callout-title{font-weight:700;color:var(--g900);margin-bottom:.3em}
.callout.warn{border-color:#f59e0b;background:var(--warn-bg)}
.steps{counter-reset:s;list-style:none;padding:0!important}
.steps li{counter-increment:s;position:relative;padding-left:46px;margin:0 0 14px}
.steps li::before{content:counter(s);position:absolute;left:0;top:0;width:32px;height:32px;border-radius:50%;background:var(--g600);color:#fff;font-weight:700;display:flex;align-items:center;justify-content:center}

/* Cards */
.card-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:12px;margin:14px 0 8px}
.card{--c:var(--g500);position:relative;display:flex;flex-direction:row;align-items:flex-start;gap:12px;padding:16px 32px 16px 14px;border:1px solid color-mix(in srgb,var(--c) 28%,#e2e8f0);border-left:4px solid var(--c);border-radius:var(--radius);text-decoration:none;background:linear-gradient(135deg,#fff 55%,color-mix(in srgb,var(--c) 9%,#fff));box-shadow:0 1px 2px rgba(15,23,42,.06);transition:.18s}
.card::after{content:"\2192";position:absolute;right:14px;top:15px;color:var(--c);font-weight:700;transition:.18s}
.card:hover{border-color:color-mix(in srgb,var(--c) 55%,#fff);box-shadow:0 10px 24px color-mix(in srgb,var(--c) 22%,transparent);transform:translateY(-2px)}
.card:hover::after{right:10px}
.card-title{font-weight:700;color:var(--ink)}
.card:hover .card-title{color:color-mix(in srgb,var(--c) 75%,#000)}
.card-text{font-size:.9rem;color:var(--muted);line-height:1.45}
.post-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:14px;margin:14px 0}
.post-card{display:flex;flex-direction:column;border:1px solid var(--g200);border-top:4px solid var(--g500);border-radius:var(--radius);overflow:hidden;text-decoration:none;background:#fff;box-shadow:0 1px 2px rgba(22,101,52,.08);transition:.18s}
.post-card:hover{box-shadow:0 10px 24px rgba(22,101,52,.14);border-color:var(--g300);border-top-color:var(--g600);transform:translateY(-2px)}
.post-card img{aspect-ratio:1200/630;object-fit:cover;width:100%;background:var(--g50)}
.post-card-body{display:flex;flex-direction:column;gap:4px;padding:14px}
.related{margin-top:44px}

/* FAQ */
.faq{margin-top:44px}
.faq-item{border:1px solid var(--line);border-radius:12px;margin:10px 0;background:#fff}
.faq-item summary{cursor:pointer;padding:14px 44px 14px 16px;font-weight:650;color:var(--ink);list-style:none;position:relative}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:"+";position:absolute;right:16px;top:10px;font-size:1.4rem;color:var(--g600)}
.faq-item[open] summary::after{content:"\2212"}
.faq-answer{padding:0 16px 6px}

/* Blog */
.post{padding-bottom:20px}
.post h1{margin-top:.2em}
.post-meta{font-size:.9rem;color:var(--muted)}
.toc{background:var(--soft);border:1px solid var(--line);border-radius:14px;padding:14px 18px;margin:1.2em 0 1.6em}
.toc-title{font-weight:700;color:var(--ink);margin:0 0 .3em}
.toc ol{margin:0;padding-left:1.2em}
.toc li{margin:.2em 0}

/* Home */
.home-hero{position:relative;overflow:hidden;background:linear-gradient(180deg,#a8e6bb 0%,#cdf1d8 45%,#ecfaf1 75%,#ffffff 100%);padding:48px 0 30px;text-align:center}
.home-hero .wrap{position:relative;z-index:1}
.hero-float{position:absolute;inset:0;pointer-events:none}
.float-ico{--c:var(--g600);position:absolute;display:flex;align-items:center;justify-content:center;border-radius:16px;background:linear-gradient(145deg,color-mix(in srgb,var(--c) 62%,#fff),color-mix(in srgb,var(--c) 80%,#fff));color:#fff;padding:11px;box-shadow:none;animation:floaty 7s ease-in-out infinite}
.float-ico svg{width:100%;height:100%}
.float-ico:nth-child(even){border-radius:50%}
@keyframes floaty{0%,100%{transform:translateY(0) rotate(-4deg)}50%{transform:translateY(-16px) rotate(5deg)}}
@media (max-width:1100px){.float-ico.inner{display:none}}
@media (max-width:760px){.hero-float{display:none}}
@media (prefers-reduced-motion:reduce){.float-ico{animation:none}}
.home-hero .lead{max-width:680px;margin:0 auto}
.tool-search{max-width:520px;margin:22px auto 0}
.tool-search input{width:100%;font:inherit;padding:14px 18px;border:1px solid var(--g300);border-radius:14px;box-shadow:var(--shadow);outline-color:var(--g600)}
.home-body{padding-bottom:30px}
.cat-block h2{margin-top:1.4em}
.cat-block h2 a{color:var(--ink);text-decoration:none}
.cat-block h2 a:hover{color:var(--g700)}
.card.hide{display:none}

/* Footer */
.site-footer{margin-top:70px;background:var(--g900);color:#d1fae5;padding:46px 0 24px;font-size:.93rem}
.site-footer a{color:#d1fae5;text-decoration:none}
.site-footer a:hover{color:#fff;text-decoration:underline}
.foot-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(160px,1fr));gap:22px}
.foot-title{color:#fff;font-weight:700;margin:0 0 .5em}
.foot-grid ul{list-style:none;margin:0;padding:0}
.foot-grid li{margin:.3em 0}
.foot-bottom{border-top:1px solid rgba(255,255,255,.15);margin-top:30px;padding-top:22px}
.foot-bottom .logo{color:#fff}
.foot-links a{margin-right:16px}
.copy{opacity:.7}

@media (max-width:640px){
  body{font-size:16px}
  .tool{padding:14px;border-radius:16px}
  .drop{padding:26px 12px}
  .file{grid-template-columns:48px 1fr;}
  .file-actions{grid-column:1/-1;justify-content:flex-end}
  .opt input[type=range]{width:140px}
}

/* Original vs result */
.cmp-wrap{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-top:14px}
.cmp-side{margin:0;position:relative;display:flex;flex-direction:column;min-width:0}
.cmp-side .stage{min-height:240px;flex:1}
.cmp-label{position:absolute;top:10px;left:10px;z-index:3;background:rgba(15,23,42,.72);color:#fff;font-size:.78rem;font-weight:700;padding:4px 10px;border-radius:999px;letter-spacing:.02em;pointer-events:none}
.cmp-side.result .cmp-label{background:var(--g600)}
.cmp-meta{font-size:.82rem;color:var(--muted);text-align:center;margin-top:6px;min-height:1.2em}
.cmp-side img{max-width:100%;max-height:420px;display:block;margin:auto;object-fit:contain}
.file{cursor:pointer}.file.sel{border-color:var(--g400,#4ade80);box-shadow:0 0 0 2px var(--g200)}
@media (max-width:640px){.cmp-wrap{grid-template-columns:1fr}}

.card-body{display:flex;flex-direction:column;gap:4px;min-width:0}
.tool-ico{flex:none;width:40px;height:40px;border-radius:11px;background:var(--c);display:flex;align-items:center;justify-content:center;box-shadow:0 4px 10px color-mix(in srgb,var(--c) 35%,transparent)}
.card:hover .tool-ico{transform:scale(1.06) rotate(-3deg);transition:.18s}

.logo b{color:var(--g600);font-weight:800}
.foot-bottom .logo b{color:#86efac}
.ai-note{text-align:center;font-size:.9rem;color:var(--muted);margin:10px auto 0;min-height:1.3em}
.ai-note:empty{display:none}