/* ===== Design tokens (design-system/ilovefreepdf/MASTER.md) =====
   Layer 1 primitives -> layer 2 semantic -> layer 3 component. Components use only layers 2-3. */
:root{
  /* primitives */
  --teal-50:#F0FDFA; --teal-100:#CCFBF1; --teal-200:#99F6E4; --teal-400:#2DD4BF; --teal-500:#14B8A6; --teal-600:#0D9488; --teal-700:#0F766E; --teal-800:#115E59; --teal-900:#134E4A;
  --orange-500:#F97316; --orange-600:#EA580C; --orange-700:#C2410C; --orange-800:#9A3412;
  --green-50:#EEF8F1; --green-100:#D5EFDD; --green-200:#A9DDBB; --green-400:#4DB37A; --green-500:#2E9461; --green-600:#1F7A4D; --green-700:#17633D; --green-800:#114D30; --green-900:#0C3C24; --green-950:#082A19;
  --slate-0:#FFFFFF; --slate-50:#F5F5FA; --slate-100:#EEEEF4; --slate-200:#E2E2EA; --slate-500:#55555F; --slate-700:#33333B; --slate-900:#1E1E26;
  --red-600:#DC2626; --amber-700:#B45309; --amber-50:#FFF7E6;
  --font-sans:"Inter",system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;
  --space-1:4px; --space-2:8px; --space-3:12px; --space-4:16px; --space-6:24px; --space-8:32px; --space-12:48px; --space-16:64px;
  --radius-sm:8px; --radius-md:10px; --radius-lg:14px; --radius-xl:20px; --radius-full:999px;
  --dur-fast:150ms; --dur-base:200ms; --ease-out:cubic-bezier(.16,1,.3,1);

  /* semantic */
  --color-primary:var(--green-700);          /* white text on it: 5.5:1 */
  --color-primary-hover:var(--green-800);
  --color-primary-soft:var(--green-50);
  --color-primary-strong-text:var(--green-800);
  --color-accent:var(--green-600);          /* CTA; white text on it: 5.2:1 */
  --color-accent-hover:var(--green-800);
  --color-accent-decor:var(--green-400);
  --color-bg:var(--slate-50); --color-surface:var(--slate-0); --color-surface-2:var(--slate-100);
  --color-fg:var(--slate-900); --color-fg-muted:var(--slate-500); --color-border:var(--slate-200);
  --color-danger:var(--red-600); --color-warn:var(--amber-700); --color-warn-soft:var(--amber-50);
  --color-ring:var(--green-500);
  --shadow-sm:0 1px 2px rgba(30,30,50,.06); --shadow-md:0 2px 4px rgba(30,30,50,.05),0 10px 24px rgba(30,30,50,.10);
  --card-shadow:0 1px 3px rgba(30,30,50,.08); --header-shadow:0 2px 8px rgba(30,30,50,.07);

  /* component */
  --btn-primary-bg:var(--color-primary); --btn-primary-bg-hover:var(--color-primary-hover); --btn-primary-fg:#fff;
  --btn-cta-bg:var(--color-accent); --btn-cta-bg-hover:var(--color-accent-hover); --btn-cta-fg:#fff;
  --card-bg:var(--color-surface); --card-border:var(--color-border); --card-radius:var(--radius-lg);
  --input-bg:var(--color-surface); --input-border:var(--color-border); --input-radius:var(--radius-md);
  --focus-ring:0 0 0 3px color-mix(in srgb, var(--color-ring) 45%, transparent);

  /* legacy aliases used across the stylesheet */
  --bg:var(--color-bg); --panel:var(--color-surface); --ink:var(--color-fg); --muted:var(--color-fg-muted); --line:var(--color-border); --soft:var(--color-surface-2);
  --brand:var(--color-primary); --brand-ink:#fff; --brand-soft:var(--color-primary-soft); --brand-dark:var(--color-primary-strong-text);
  --coral:var(--color-accent-decor); --warn:var(--color-warn); --warn-soft:var(--color-warn-soft); --danger:var(--color-danger);
  --c-org:#2563EB; --c-opt:var(--green-700); --c-to:#C2410C; --c-from:#7C3AED; --c-edit:#BE185D; --c-sec:#334155; --c-ai:#0E7490;
  --shadow:var(--shadow-md); --radius:var(--radius-lg);
}
@media (prefers-color-scheme:dark){
  :root:not([data-theme="light"]){
    --color-primary:var(--green-600); --color-primary-hover:var(--green-700); --color-primary-soft:#123A24; --color-primary-strong-text:var(--green-400);
    --color-bg:#0B1510; --color-surface:#13211A; --color-surface-2:#1A2C23; --color-fg:#E6EEF0; --color-fg-muted:#9BB0B6; --color-border:#24392E;
    --color-warn-soft:#33270F; --color-warn:#F5C26B; --color-ring:var(--green-400);
    --shadow-sm:0 1px 2px rgba(0,0,0,.35); --shadow-md:0 1px 2px rgba(0,0,0,.3),0 8px 22px rgba(0,0,0,.3);
    --card-shadow:none; --header-shadow:none;
  }
}
:root[data-theme="dark"]{
  --color-primary:var(--green-600); --color-primary-hover:var(--green-700); --color-primary-soft:#123A24; --color-primary-strong-text:var(--green-400);
  --color-bg:#0B1510; --color-surface:#13211A; --color-surface-2:#1A2C23; --color-fg:#E6EEF0; --color-fg-muted:#9BB0B6; --color-border:#24392E;
  --color-warn-soft:#33270F; --color-warn:#F5C26B; --color-ring:var(--green-400);
  --shadow-sm:0 1px 2px rgba(0,0,0,.35); --shadow-md:0 1px 2px rgba(0,0,0,.3),0 8px 22px rgba(0,0,0,.3);
    --card-shadow:none; --header-shadow:none;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font:16px/1.55 var(--font-sans);color:var(--ink);background:var(--bg);min-height:100vh;display:flex;flex-direction:column;-webkit-font-smoothing:antialiased}
a{color:inherit}
button,input,select,textarea{font:inherit;color:inherit}
button,[role=button],label.radio-card,.seg label,.chip,.card{cursor:pointer}
:focus-visible{outline:none;box-shadow:var(--focus-ring);border-radius:var(--radius-sm)}
.card:focus-visible,.bigbtn:focus-visible,.btn:focus-visible{box-shadow:var(--focus-ring)}
input:focus-visible,select:focus-visible,textarea:focus-visible{border-color:var(--color-ring)!important}
@media (prefers-reduced-motion:reduce){*,*::before,*::after{animation-duration:.01ms!important;transition-duration:.01ms!important;scroll-behavior:auto!important}}
.skip{position:absolute;left:-9999px}
.skip:focus{left:16px;top:8px;z-index:100;background:var(--panel);padding:8px 12px}
svg.i{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round;flex:none}
.wrap{max-width:1240px;margin:0 auto;padding:0 16px;width:100%}

/* header */
.top{background:var(--panel);border-bottom:1px solid var(--line);box-shadow:var(--header-shadow);position:sticky;top:0;z-index:40}
.top .wrap{display:flex;align-items:center;gap:18px;height:64px}
.logo{display:flex;align-items:center;gap:8px;text-decoration:none;font-weight:800;font-size:20px;letter-spacing:-.02em;white-space:nowrap}
.logo .mark{width:30px;height:30px;border-radius:9px;background:var(--brand);color:#fff;display:grid;place-items:center}
.logo .mark svg{width:18px;height:18px}
.logo b{color:var(--brand)}
.nav{display:flex;gap:4px;align-items:center;flex:1}
.nav a,.nav button{text-decoration:none;border:0;background:none;padding:8px 12px;border-radius:9px;font-weight:600;font-size:14px;color:var(--ink);white-space:nowrap}
.nav a:hover,.nav button:hover{background:var(--soft)}
.nav .hl{color:var(--c-ai)}
.free{background:var(--brand-soft);color:var(--brand-dark);font-weight:700;font-size:12px;padding:5px 10px;border-radius:999px;white-space:nowrap}
.drop-nav{position:relative}
.drop-nav .menu{position:absolute;top:calc(100% + 6px);left:0;background:var(--panel);border:1px solid var(--line);border-radius:12px;box-shadow:var(--shadow);padding:8px;display:none;min-width:240px;z-index:60}
.drop-nav.open .menu{display:grid}
.drop-nav .menu a{padding:8px 10px;border-radius:8px;font-weight:500}
.burger{display:none;border:1px solid var(--line);background:var(--panel);border-radius:10px;width:44px;height:44px;place-items:center}

/* hero & home */
.hero{text-align:center;padding:48px 0 18px}
.hero h1{font-size:clamp(30px,4.8vw,52px);line-height:1.08;letter-spacing:-.03em;margin:0 0 14px;font-weight:800}
.hero h1 em{font-style:normal;color:var(--color-primary)}
.hero p{color:var(--muted);font-size:clamp(15px,1.8vw,18px);max-width:760px;margin:0 auto}
.badges{display:flex;gap:8px;justify-content:center;flex-wrap:wrap;margin-top:18px}
.badges span{background:var(--panel);border:1px solid var(--line);border-radius:999px;padding:6px 12px;font-size:13px;font-weight:600;display:inline-flex;gap:6px;align-items:center}
.badges svg{width:15px;height:15px;color:var(--brand)}
.filters{display:flex;gap:8px;flex-wrap:wrap;justify-content:center;margin:26px 0 8px}
.chip{border:1px solid var(--line);background:var(--panel);border-radius:var(--radius-full);padding:9px 16px;min-height:40px;font-weight:600;font-size:14px;transition:background var(--dur-fast),color var(--dur-fast)}
.chip:hover{border-color:var(--color-primary)}
.chip.on{background:var(--color-primary);color:#fff;border-color:var(--color-primary)}
.search{display:flex;justify-content:center;margin:14px 0 22px}
.search input{width:min(480px,100%);border:1px solid var(--input-border);background:var(--input-bg);border-radius:var(--radius-full);padding:12px 18px;min-height:48px}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(225px,1fr));gap:16px;padding-bottom:30px}
.card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:18px;text-decoration:none;display:flex;flex-direction:column;gap:8px;box-shadow:var(--card-shadow);transition:transform var(--dur-base) var(--ease-out),box-shadow var(--dur-base),border-color var(--dur-base);position:relative;min-height:170px}
.card:hover{transform:translateY(-3px);box-shadow:var(--shadow);border-color:color-mix(in srgb,var(--color-primary) 35%,transparent)}
.card h3{margin:4px 0 0;font-size:17px;letter-spacing:-.01em}
.card p{margin:0;color:var(--muted);font-size:13.5px;line-height:1.45}
.ico{width:44px;height:44px;border-radius:12px;display:grid;place-items:center;color:#fff}
.ico svg{width:24px;height:24px}
.tag{position:absolute;top:14px;right:14px;font-size:11px;font-weight:700;padding:3px 8px;border-radius:999px;background:var(--brand-soft);color:var(--brand-dark)}
.tag.ai{background:#dff4f8;color:#0e6a80}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]) .tag.ai{background:#123640;color:#7fd8ea}}
:root[data-theme="dark"] .tag.ai{background:#123640;color:#7fd8ea}
.feature{background:linear-gradient(135deg,var(--green-700),var(--green-950));color:#fff;border-radius:20px;padding:30px;display:grid;grid-template-columns:1.4fr 1fr;gap:24px;align-items:center;margin:20px 0 34px}
.feature h2{margin:0 0 8px;font-size:clamp(22px,3vw,30px);letter-spacing:-.02em}
.feature p{margin:0 0 16px;opacity:.92}
.feature ul{margin:0;padding-left:18px;opacity:.95}
.feature .cta{display:inline-flex;gap:8px;align-items:center;background:#fff;color:var(--green-900);font-weight:700;border-radius:12px;padding:12px 20px;min-height:48px;text-decoration:none;transition:transform var(--dur-fast)}
.feature .cta:hover{transform:translateX(3px)}
.section-title{font-size:24px;letter-spacing:-.02em;margin:34px 0 14px}
.why{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:16px}
.why div{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:18px}
.why h4{margin:8px 0 4px}
.why p{margin:0;color:var(--muted);font-size:14px}
.why svg{color:var(--brand);width:26px;height:26px}
details.faq{background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:12px 16px;margin-bottom:10px}
details.faq summary{font-weight:600;cursor:pointer}
details.faq p{color:var(--muted);margin:8px 0 2px}

footer{margin-top:auto;background:var(--panel);border-top:1px solid var(--line);padding:26px 0;color:var(--muted);font-size:14px}
footer .wrap{display:flex;gap:16px;flex-wrap:wrap;justify-content:space-between;align-items:center}
footer a{text-decoration:none;margin-right:14px}
footer a:hover{color:var(--ink)}

/* tool page */
.tool-head{text-align:center;padding:40px 0 10px}
.tool-head h1{font-size:clamp(26px,4vw,40px);margin:0 0 8px;letter-spacing:-.025em}
.tool-head p{color:var(--muted);max-width:700px;margin:0 auto;font-size:17px}
.uploader{display:flex;flex-direction:column;align-items:center;gap:12px;padding:26px 0 50px}
.bigbtn{background:var(--btn-cta-bg);color:var(--btn-cta-fg);border:0;border-radius:var(--radius-lg);padding:18px 34px;min-height:56px;font-size:19px;font-weight:700;box-shadow:0 6px 18px color-mix(in srgb,var(--btn-cta-bg) 30%,transparent);display:inline-flex;gap:10px;align-items:center;transition:background var(--dur-base),transform var(--dur-fast)}
.bigbtn:hover{background:var(--btn-cta-bg-hover)}
.bigbtn:active{transform:scale(.98)}
.bigbtn:disabled{opacity:.5;cursor:default}
.dropzone{border:2px dashed var(--line);border-radius:18px;padding:30px 20px;width:min(720px,100%);text-align:center;color:var(--muted);background:var(--panel)}
body.dragging .dropzone{border-color:var(--brand);background:var(--brand-soft)}
.privacy-note{display:flex;gap:8px;align-items:center;color:var(--muted);font-size:13px}
.privacy-note svg{width:16px;height:16px;color:var(--brand)}

.work{display:grid;grid-template-columns:1fr 340px;gap:0;min-height:calc(100vh - 64px)}
.stage{padding:24px;overflow:auto;min-width:0}
.side{background:var(--panel);border-left:1px solid var(--line);padding:20px;display:flex;flex-direction:column;gap:14px;position:sticky;top:64px;height:calc(100vh - 64px);overflow:auto}
.side h2{margin:0;font-size:20px}
.side .opts{display:flex;flex-direction:column;gap:14px}
.side .go{margin-top:auto;position:sticky;bottom:0;background:var(--panel);padding-top:10px}
.side .go .bigbtn{width:100%;justify-content:center;font-size:17px;padding:15px}
.field{display:flex;flex-direction:column;gap:6px}
.field>label,.flabel{font-weight:600;font-size:14px}
.field input[type=text],.field input[type=number],.field input[type=password],.field input[type=url],.field select,.field textarea,.input{border:1px solid var(--line);background:var(--panel);border-radius:10px;padding:9px 11px;width:100%}
.field textarea{resize:vertical;min-height:80px}
.hint{color:var(--muted);font-size:12.5px}
.seg{display:grid;grid-auto-flow:column;grid-auto-columns:1fr;border:1px solid var(--line);border-radius:10px;overflow:hidden}
.seg label{text-align:center;padding:8px 6px;font-size:13px;font-weight:600;cursor:pointer;border-right:1px solid var(--line)}
.seg label:last-child{border-right:0}
.seg input{display:none}
.seg label:has(input:checked){background:var(--brand-soft);color:var(--brand-dark)}
.radio-card{border:1px solid var(--line);border-radius:12px;padding:10px 12px;display:flex;gap:10px;align-items:flex-start;cursor:pointer}
.radio-card:has(input:checked){border-color:var(--brand);background:var(--brand-soft)}
.radio-card b{display:block;font-size:14px}
.radio-card span{color:var(--muted);font-size:12.5px}
.check{display:flex;gap:8px;align-items:center;font-size:14px}
.note{background:var(--warn-soft);color:var(--warn);border-radius:10px;padding:10px 12px;font-size:13px}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]) .note{color:#f5c26b}}
:root[data-theme="dark"] .note{color:#f5c26b}
.btn{border:1px solid var(--line);background:var(--panel);border-radius:var(--radius-md);padding:9px 16px;min-height:44px;font-weight:600;display:inline-flex;gap:6px;align-items:center;justify-content:center;text-decoration:none;transition:background var(--dur-fast),border-color var(--dur-fast)}
.btn:hover{background:var(--soft)}
.btn.primary{background:var(--btn-primary-bg);border-color:var(--btn-primary-bg);color:var(--btn-primary-fg)}
.btn.primary:hover{background:var(--btn-primary-bg-hover)}
.btn.sm{padding:6px 12px;min-height:36px;font-size:14px}

/* file cards */
.files{display:flex;flex-wrap:wrap;gap:18px;align-items:flex-start;justify-content:center}
.fcard{width:180px;background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:10px;position:relative;box-shadow:var(--shadow);cursor:grab}
.fcard .th{height:200px;display:flex;align-items:center;justify-content:center;background:var(--soft);border-radius:8px;overflow:hidden}
.fcard .th img,.fcard .th canvas{max-width:100%;max-height:100%;box-shadow:0 1px 4px rgba(0,0,0,.18);background:#fff}
.fcard .nm{font-size:12.5px;margin-top:8px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.fcard .sz{font-size:11.5px;color:var(--muted)}
.fcard .x{position:absolute;top:-12px;right:-12px;width:32px;height:32px;border-radius:50%;border:1px solid var(--line);background:var(--panel);display:grid;place-items:center;font-size:15px;line-height:1;box-shadow:var(--shadow)}
.fcard.dragover{outline:3px solid var(--brand)}
.addmore{width:180px;height:252px;border:2px dashed var(--line);border-radius:12px;display:flex;flex-direction:column;gap:6px;align-items:center;justify-content:center;color:var(--muted);background:none;font-weight:600}
.addmore:hover{border-color:var(--brand);color:var(--brand)}

/* page grid */
.pages{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:18px}
.pg{background:var(--panel);border:2px solid transparent;border-radius:12px;padding:8px;box-shadow:var(--shadow);position:relative;cursor:grab;user-select:none}
.pg.sel{border-color:var(--brand);background:var(--brand-soft)}
.pg.del{opacity:.35}
.pg .th{height:170px;display:flex;align-items:center;justify-content:center}
.pg .th canvas,.pg .th img{max-width:100%;max-height:100%;box-shadow:0 1px 4px rgba(0,0,0,.2);background:#fff;transition:transform .2s}
.pg .n{text-align:center;font-size:12px;color:var(--muted);margin-top:6px}
.pg .acts{position:absolute;top:6px;right:6px;display:flex;gap:4px;opacity:0;transition:opacity .15s}
.pg:hover .acts{opacity:1}
.pg .acts button{width:32px;height:32px;border-radius:8px;border:1px solid var(--line);background:var(--panel);display:grid;place-items:center;padding:0}
.pg .acts svg{width:15px;height:15px}
.pg.dragover{outline:3px dashed var(--brand)}
.pg .ck{position:absolute;top:8px;left:8px;width:22px;height:22px;border-radius:6px;border:2px solid var(--line);background:var(--panel);display:grid;place-items:center;color:#fff;font-size:14px}
.pg.sel .ck{background:var(--brand);border-color:var(--brand)}

/* regions */
.regions{display:flex;flex-direction:column;align-items:center;gap:12px}
.rbar{display:flex;gap:8px;align-items:center;flex-wrap:wrap;justify-content:center}
.rpage{position:relative;box-shadow:var(--shadow);background:#fff;touch-action:none;cursor:crosshair}
.rpage canvas{display:block}
.rbox{position:absolute;border:2px solid var(--brand);background:rgba(14,138,110,.15)}
.rbox.black{background:#000;border-color:#000;opacity:.85}
.rbox .lb{position:absolute;left:0;top:-20px;font-size:11px;background:var(--brand);color:#fff;padding:1px 6px;border-radius:4px;white-space:nowrap}
.rbox .rx{position:absolute;right:-10px;top:-10px;width:20px;height:20px;border-radius:50%;background:var(--danger);color:#fff;border:0;font-size:12px;line-height:1;padding:0}

/* result */
.result{text-align:center;padding:50px 16px}
.result h2{font-size:clamp(24px,3.4vw,34px);margin:10px 0 8px;letter-spacing:-.02em}
.result .stats{color:var(--muted);margin-bottom:20px}
.result .dl{display:flex;flex-direction:column;align-items:center;gap:10px}
.result .list{display:flex;flex-direction:column;gap:6px;align-items:center;margin-top:14px}
.ok{width:64px;height:64px;border-radius:50%;background:var(--brand-soft);color:var(--brand);display:grid;place-items:center;margin:0 auto}
.ok svg{width:34px;height:34px}
.next{margin-top:34px}
.next .grid{grid-template-columns:repeat(auto-fill,minmax(200px,1fr));max-width:900px;margin:12px auto 0;text-align:left}
.textout{max-width:860px;margin:20px auto 0;text-align:left;background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:20px 24px;white-space:pre-wrap;line-height:1.6}

/* compare */
.cmp{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.cmp .col{background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:16px;white-space:pre-wrap;font-size:14px;line-height:1.6;max-height:70vh;overflow:auto}
.cmp ins{background:#c9f2d9;color:#0a5c2d;text-decoration:none;border-radius:3px}
.cmp del{background:#ffd5d0;color:#8a1c0f;border-radius:3px}
.vdiff{display:flex;flex-wrap:wrap;gap:14px;justify-content:center;margin-top:16px}
.vdiff figure{margin:0;background:var(--panel);border:1px solid var(--line);border-radius:10px;padding:8px}
.vdiff canvas{max-width:280px;display:block}
.vdiff figcaption{font-size:12px;color:var(--muted);text-align:center;margin-top:4px}

/* busy & toast */
.busy{position:fixed;inset:0;background:rgba(245,246,250,.82);display:none;align-items:center;justify-content:center;flex-direction:column;gap:14px;z-index:200;font-weight:700;text-align:center;padding:20px}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]) .busy{background:rgba(16,20,28,.85)}}
:root[data-theme="dark"] .busy{background:rgba(16,20,28,.85)}
.busy.on{display:flex}
.spin{width:44px;height:44px;border:5px solid var(--brand-soft);border-top-color:var(--brand);border-radius:50%;animation:sp .8s linear infinite}
@keyframes sp{to{transform:rotate(360deg)}}
.bar{width:min(340px,80vw);height:8px;background:var(--line);border-radius:99px;overflow:hidden}
.bar i{display:block;height:100%;width:0;background:var(--brand);transition:width .2s}
.toast{position:fixed;bottom:20px;left:50%;transform:translateX(-50%);background:var(--ink);color:var(--panel);padding:11px 18px;border-radius:12px;opacity:0;transition:opacity .2s;pointer-events:none;z-index:300;max-width:90vw;font-weight:600}
.toast.on{opacity:1}

@media (max-width:900px){
  .work{grid-template-columns:1fr}
  .side{position:static;height:auto;border-left:0;border-top:1px solid var(--line)}
  .feature{grid-template-columns:1fr}
  .cmp{grid-template-columns:1fr}
}
@media (max-width:1240px){ .free{display:none} }
@media (max-width:1180px){
  .nav{display:none}
  .nav.open{display:flex;flex-direction:column;align-items:stretch;position:absolute;top:64px;left:0;right:0;background:var(--panel);border-bottom:1px solid var(--line);padding:10px 16px;box-shadow:var(--shadow);max-height:calc(100vh - 64px);overflow:auto}
  .nav.open a,.nav.open button{min-height:44px;display:flex;align-items:center}
  .nav.open .drop-nav .menu{position:static;box-shadow:none;border:0;padding-left:12px}
  .burger{display:grid;margin-left:8px}
  .top .wrap{gap:10px}
}
@media (max-width:760px){
  .fcard,.addmore{width:150px}
  .fcard .th{height:170px}
  .addmore{height:222px}
}

/* ===== accounts, premium, ads ===== */
.acct{display:flex;gap:8px;align-items:center;margin-left:auto}
.acct .btn{min-height:40px}
.pbadge{background:var(--color-accent);color:#fff;font-size:10px;font-weight:800;border-radius:6px;padding:2px 6px;margin-right:6px;letter-spacing:.04em}
.tag.pro{background:#FFF1E7;color:#9A3412}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]) .tag.pro{background:#3B2214;color:#FDBA8C}}
:root[data-theme="dark"] .tag.pro{background:#3B2214;color:#FDBA8C}
.paywall{max-width:620px;margin:50px auto;background:var(--card-bg);border:1px solid var(--card-border);border-radius:var(--radius-xl);padding:34px;text-align:center;box-shadow:var(--shadow)}
.paywall h2{margin:12px 0 8px;font-size:26px;letter-spacing:-.02em}
.paywall p{color:var(--muted)}
.paywall ul{text-align:left;max-width:420px;margin:16px auto;color:var(--ink);line-height:1.9}
.pw-ico{width:56px;height:56px;border-radius:16px;background:var(--color-primary-soft);color:var(--color-primary);display:grid;place-items:center;margin:0 auto}
.pw-ico svg{width:28px;height:28px}
.pw-btns{display:flex;gap:10px;justify-content:center;flex-wrap:wrap;align-items:center;margin-top:12px}
.pw-btns .bigbtn{padding:14px 26px;font-size:17px;text-decoration:none}
[data-ad]{margin:22px auto;max-width:970px;min-height:100px;text-align:center}
.adlabel{display:block;font-size:11px;color:var(--muted);margin-bottom:4px;text-transform:uppercase;letter-spacing:.06em}

.plans{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:20px;max-width:1180px;margin:26px auto}
.plan{background:var(--card-bg);border:1px solid var(--card-border);border-radius:var(--radius-xl);padding:28px;display:flex;flex-direction:column;gap:12px}
.plan.hl{border:2px solid var(--color-accent);box-shadow:var(--shadow);position:relative}
.plan .rib{position:absolute;top:-13px;left:50%;transform:translateX(-50%);background:var(--color-accent);color:#fff;font-size:12px;font-weight:800;padding:4px 12px;border-radius:999px;white-space:nowrap}
.plan h3{margin:0;font-size:20px}
.plan .pr{font-size:40px;font-weight:800;letter-spacing:-.03em}
.plan .pr small{font-size:15px;color:var(--muted);font-weight:600}
.plan ul{list-style:none;padding:0;margin:0;display:grid;gap:9px}
.plan li{display:flex;gap:8px;align-items:flex-start}
.plan li svg{width:18px;height:18px;color:var(--color-primary);flex:none;margin-top:3px}
.plan li.no{color:var(--muted)}
.plan li.no svg{color:var(--muted)}
.plan .bigbtn,.plan .btn{justify-content:center;width:100%}
.authbox{max-width:440px;margin:40px auto;background:var(--card-bg);border:1px solid var(--card-border);border-radius:var(--radius-xl);padding:30px;display:grid;gap:14px}
.authbox h1{font-size:26px;margin:0}
.seg-tabs{display:grid;grid-template-columns:1fr 1fr;border:1px solid var(--line);border-radius:10px;overflow:hidden}
.seg-tabs button{border:0;background:none;padding:10px;font-weight:600;min-height:44px}
.seg-tabs button.on{background:var(--color-primary);color:#fff}
.msg{border-radius:10px;padding:10px 12px;font-size:14px}
.msg.err{background:#FEE2E2;color:#991B1B}
.msg.ok{background:var(--color-primary-soft);color:var(--brand-dark)}

/* landing sections (empresas / estudantes) */
.lp-hero{display:grid;grid-template-columns:1.2fr 1fr;gap:30px;align-items:center;padding:48px 0 20px}
.lp-hero h1{font-size:clamp(30px,4.4vw,48px);line-height:1.08;letter-spacing:-.03em;margin:0 0 14px}
.lp-hero p{color:var(--muted);font-size:18px;margin:0 0 20px}
.lp-hero .cta{display:flex;gap:10px;flex-wrap:wrap}
.lp-hero .cta a{text-decoration:none}
.lp-art{background:var(--card-bg);border:1px solid var(--card-border);border-radius:var(--radius-xl);padding:20px;box-shadow:var(--shadow)}
.feat{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:16px;margin:10px 0 30px}
.feat .f{background:var(--card-bg);border:1px solid var(--card-border);border-radius:var(--radius-lg);padding:20px}
.feat .f h3{margin:10px 0 6px;font-size:17px}
.feat .f p{margin:0;color:var(--muted);font-size:14.5px}
.feat .f .ico{width:42px;height:42px}
@media (max-width:860px){ .lp-hero{grid-template-columns:1fr} }

/* ===== language ===== */
.langsel{border:1px solid var(--line);background:var(--panel);border-radius:var(--radius-md);padding:8px 10px;min-height:40px;font-weight:600;font-size:14px;cursor:pointer}
footer .langsel{min-height:34px;padding:5px 8px}
.langbar{display:flex;gap:10px;align-items:center;justify-content:center;flex-wrap:wrap;background:var(--color-primary-soft);color:var(--brand-dark);padding:8px 16px;font-weight:600;font-size:14px}
@media (max-width:760px){ .top .langsel{max-width:96px} }

.logo .mark{background:none;width:34px;height:34px}
.logo .mark img{width:34px;height:34px;display:block;border-radius:9px;box-shadow:0 1px 3px rgba(0,0,0,.25)}
.logo b{color:var(--color-primary)}

/* ===== profile menu ===== */
.umenu{position:relative}
.avatar{width:40px;height:40px;border-radius:50%;border:0;background:var(--color-primary);color:#fff;font-weight:800;font-size:16px;display:grid;place-items:center;position:relative;cursor:pointer;flex:none}
.avatar:focus-visible{outline:3px solid var(--color-accent);outline-offset:2px}
.avatar.big{width:44px;height:44px;cursor:default}
.avatar .pdot{position:absolute;right:-1px;bottom:-1px;width:13px;height:13px;border-radius:50%;background:#F5C542;border:2px solid var(--panel)}
.umenu-list{position:absolute;right:0;top:calc(100% + 8px);background:var(--panel);border:1px solid var(--line);border-radius:14px;box-shadow:var(--shadow);min-width:270px;max-width:calc(100vw - 24px);padding:8px;display:none;z-index:80}
.umenu.open .umenu-list{display:block}
.umenu-list a,.umenu-list button{display:flex;width:100%;text-align:left;border:0;background:none;color:var(--ink);padding:10px 12px;border-radius:9px;text-decoration:none;font:inherit;font-weight:500;min-height:42px;align-items:center;font-size:14.5px;cursor:pointer}
.umenu-list a:hover,.umenu-list button:hover{background:var(--soft)}
.umenu-list .upgrade{color:var(--color-primary);font-weight:700}
.umenu-list hr{border:0;border-top:1px solid var(--line);margin:6px 0}
.uhead{display:flex;gap:12px;align-items:center;padding:8px 10px 12px;border-bottom:1px solid var(--line);margin-bottom:6px}
.uhead b{display:block}
.uhead span{display:block;color:var(--muted);font-size:13px;word-break:break-all}
.uhead .pbadge{display:inline-block;margin-top:4px;color:#fff;width:max-content}

/* ===== account page ===== */
.acc{display:grid;grid-template-columns:240px 1fr;gap:28px;padding:36px 0 60px;align-items:start}
.acc-nav{display:flex;flex-direction:column;gap:4px;position:sticky;top:90px}
.acc-nav a{padding:11px 14px;border-radius:10px;text-decoration:none;color:var(--ink);font-weight:600;min-height:44px;display:flex;align-items:center}
.acc-nav a:hover{background:var(--soft)}
.acc-nav a.on{background:var(--color-primary);color:#fff}
.acc-panel{background:var(--panel);border:1px solid var(--line);border-radius:16px;padding:26px;display:flex;flex-direction:column;gap:16px;min-width:0}
.acc-panel h2{margin:0;font-size:24px}
.acc-panel h3{margin:8px 0 0;font-size:17px}
.acc-row{display:flex;gap:10px;flex-wrap:wrap;align-items:end}
.acc-row .field{flex:1;min-width:200px;margin:0}
.acc-table{width:100%;border-collapse:collapse;font-size:14px}
.acc-table th,.acc-table td{text-align:left;padding:10px 8px;border-bottom:1px solid var(--line);vertical-align:middle}
.acc-table th{color:var(--muted);font-weight:600;font-size:13px}
.acc-scroll{overflow-x:auto}
.meter{height:10px;border-radius:99px;background:var(--soft);overflow:hidden}
.meter i{display:block;height:100%;background:var(--color-accent)}
.tagm{display:inline-block;font-size:12px;font-weight:700;padding:2px 8px;border-radius:99px;background:var(--soft)}
.tagm.me{background:var(--color-accent);color:#fff}
@media (max-width:820px){.acc{grid-template-columns:1fr}.acc-nav{position:static;flex-direction:row;overflow-x:auto}.acc-nav a{white-space:nowrap}}


/* ===== theme switch ===== */
.themebtn{width:40px;height:40px;border-radius:10px;border:1px solid var(--line);background:var(--panel);color:var(--ink);display:grid;place-items:center;flex:none}
.themebtn:hover{background:var(--soft)}
.themebtn svg{width:19px;height:19px}
.themebtn .moon{display:none}
:root[data-theme="dark"] .themebtn .sun{display:none}
:root[data-theme="dark"] .themebtn .moon{display:block}
footer .themesel{border:1px solid var(--line);background:var(--panel);color:var(--ink);border-radius:8px;padding:6px 8px;min-height:36px}
/* readable text everywhere: comfortable line length and no tiny grey copy */
.hint,.card p,.why p,details.faq p{color:var(--muted)}
p,li{text-wrap:pretty}
h1,h2,h3{text-wrap:balance}
/* brighter brand green for text on dark backgrounds */
:root[data-theme="dark"] .logo b,:root[data-theme="dark"] .hero h1 em{color:var(--green-400)}
/* document previews are always white paper: keep dark ink on them in both themes */
.paper,.paper *,.sheet,.sheet *{color:#1E1E26}
.sheet .hint{color:#55555F}
/* plan lists: icon on the left, sentence flows normally (bold words stay inline) */
.plan li{display:block;position:relative;padding-left:26px}
.plan li svg{position:absolute;left:0;top:2px;margin:0}

/* ===== small screens: header fits any phone (320px and up) ===== */
.nav-extra{display:none}
.nav-extra .langsel,.nav-extra .themesel{flex:1;min-height:44px;border:1px solid var(--line);background:var(--panel);color:var(--ink);border-radius:var(--radius-md);padding:8px 10px;font-weight:600}
@media (max-width:600px){
  .top .wrap{gap:8px;padding:0 12px}
  .logo{font-size:18px;gap:6px;min-width:0}
  .logo .mark,.logo .mark img{width:30px;height:30px}
  .top > .wrap > .langsel,.top > .wrap > .themebtn{display:none}
  .nav.open .nav-extra{display:flex;gap:8px;padding-top:10px;margin-top:6px;border-top:1px solid var(--line)}
  .acct{gap:6px}
  .acct .btn{padding:8px 12px}
  .acct .btn + .premium-link{display:none}
  .burger{margin-left:0;width:42px;height:42px}
  .hero{padding:32px 0 12px}
  .plans{margin:18px auto}
  .plan{padding:22px}
}
@media (max-width:360px){
  .logo{font-size:16px}
  .acct .btn{padding:8px 10px;font-size:13px}
}
.top .nav-extra .langsel{max-width:none}

/* ===== Pix (Mercado Pago) ===== */
.pixbox{display:flex;flex-direction:column;align-items:center;gap:14px;text-align:center}
.pixbox img{width:240px;height:240px;max-width:100%;border-radius:12px;background:#fff;padding:8px;border:1px solid var(--line)}
.pixbox textarea{font-family:ui-monospace,Consolas,monospace;font-size:12px;word-break:break-all;resize:none}
.pixbox .bigbtn{width:100%}
.pixwait{display:flex;gap:10px;align-items:center;justify-content:center;font-weight:600;color:var(--muted)}
.pixwait .spin{width:18px;height:18px;border-radius:50%;border:3px solid var(--line);border-top-color:var(--color-accent);animation:pixspin 1s linear infinite}
@keyframes pixspin{to{transform:rotate(360deg)}}
@media (prefers-reduced-motion:reduce){.pixwait .spin{animation:none}}

/* ===== paying without an account ===== */
.guestbox{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius-lg);padding:18px 20px;display:flex;flex-direction:column;gap:10px}
.guestbox ul{margin:0;padding-left:20px;display:grid;gap:6px}
.guestbox p{margin:0}
.guest-btns{display:flex;gap:10px;flex-wrap:wrap}
.guest-btns > *{flex:1 1 220px;justify-content:center;text-align:center}

/* ===== ads sold directly: one quiet card, clearly labelled ===== */
.adcard{display:flex;gap:14px;align-items:center;max-width:728px;margin:0 auto;padding:10px 12px;border:1px solid var(--line);border-radius:12px;background:var(--panel);text-decoration:none;color:var(--ink);text-align:left}
.adcard:hover{border-color:var(--color-primary)}
.adcard img{width:200px;max-width:40%;height:auto;aspect-ratio:2/1;object-fit:cover;border-radius:8px;flex:none;background:var(--soft)}
.adcard .adtext{display:flex;flex-direction:column;gap:3px;min-width:0}
.adcard .adtext span{color:var(--muted);font-size:14px}
.adcard .adtext small{color:var(--muted);font-size:12px}
[data-ad]{min-height:0}
@media (max-width:520px){.adcard{flex-direction:column;align-items:stretch}.adcard img{width:100%;max-width:none}}

/* ===== SEO block under each tool: how-to, FAQ, related tools ===== */
.seo{max-width:860px;margin:10px auto 34px;color:var(--ink)}
.seo h2{font-size:22px;letter-spacing:-.01em;margin:30px 0 12px}
.seo-lead{color:var(--muted);font-size:16px;line-height:1.7;margin:6px 0 0}
.seo-steps{padding-left:22px;display:grid;gap:8px;line-height:1.6}
.seo-links{list-style:none;padding:0;margin:0;display:flex;flex-wrap:wrap;gap:8px}
.seo-links a{display:inline-flex;min-height:40px;align-items:center;padding:8px 14px;border:1px solid var(--line);border-radius:999px;text-decoration:none;font-weight:600;font-size:14px;background:var(--panel)}
.seo-links a:hover{border-color:var(--color-primary)}