/* ===== Design tokens ===== */
:root{
  /* accent (green) */
  --accent:#1f7a52; --accent-d:#15543a; --accent-soft:#e7f5ee; --accent-soft-2:#c7e8d4;
  --brand:#1f6b66;
  /* text */
  --text:#10231f; --text-2:#44544e; --text-3:#5b6a63;
  /* surfaces */
  --bg:#f6f8f7; --surface:#ffffff; --surface-2:#f1f6f3; --surface-3:#e9f1ec;
  --border:#e1eae5; --border-2:#cddcd4;
  /* status */
  --danger:#b42318; --danger-soft:#fff0f0; --danger-soft-2:#fee4e2;
  --warn:#8a5a00; --warn-soft:#fff8df; --warn-soft-2:#fdecc8;
  --info:#1d4ed8; --info-soft:#eff6ff;
  /* radius */
  --r-sm:8px; --r-input:10px; --r:12px; --r-lg:16px; --r-xl:24px; --r-full:999px;
  /* layout */
  --max:1140px;
  /* shadows */
  --shadow-xs:0 1px 2px rgba(16,35,31,.05);
  --shadow-sm:0 1px 3px rgba(16,35,31,.06);
  --shadow:0 8px 24px rgba(16,35,31,.07);
  --shadow-hover:0 14px 34px rgba(16,35,31,.11);
  --shadow-lg:0 18px 50px rgba(16,35,31,.12);
  --ring:0 0 0 4px rgba(31,122,82,.16);
  /* easing (stronger than built-in CSS curves) */
  --ease-out:cubic-bezier(.23,1,.32,1);
  --ease:cubic-bezier(.4,0,.2,1);
  --font:"Inter",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  --mono:ui-monospace,SFMono-Regular,"SF Mono",Menlo,Monaco,Consolas,monospace;
  --header-h:64px;
}
[data-theme="dark"]{
  --accent:#5fc88b; --accent-d:#54bd80; --accent-soft:rgba(95,200,139,.13); --accent-soft-2:rgba(95,200,139,.22);
  --brand:#5d9692;
  --text:#eef3ee; --text-2:#a9b4ac; --text-3:#869089;
  --bg:#0c110e; --surface:#121a15; --surface-2:#172017; --surface-3:#1d271f;
  --border:#26332a; --border-2:#34463a;
  --danger:#f0675a; --danger-soft:rgba(240,103,90,.12); --danger-soft-2:rgba(240,103,90,.20);
  --warn:#e0a23a; --warn-soft:rgba(224,162,58,.12); --warn-soft-2:rgba(224,162,58,.20);
  --info:#7aa2f7; --info-soft:rgba(122,162,247,.12);
  --shadow-xs:0 1px 2px rgba(0,0,0,.4);
  --shadow-sm:0 1px 3px rgba(0,0,0,.4);
  --shadow:0 10px 28px rgba(0,0,0,.45);
  --shadow-hover:0 16px 38px rgba(0,0,0,.5);
  --shadow-lg:0 18px 50px rgba(0,0,0,.55);
  --ring:0 0 0 4px rgba(95,200,139,.22);
}

/* ===== Base ===== */
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;font-family:var(--font);color:var(--text);background:var(--bg);
  line-height:1.6;font-size:15px;letter-spacing:-.002em;
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
a{color:var(--accent-d);text-decoration:none}
a:hover{text-decoration:underline}
h1,h2,h3,h4{letter-spacing:-.021em;line-height:1.16;color:var(--text);font-weight:760}
.wrap{max-width:var(--max);margin:0 auto;padding:0 24px}
.narrow{max-width:880px}
.lede{color:var(--text-2);font-size:16px;line-height:1.6;margin:0 0 28px;max-width:66ch}

/* ===== Breadcrumb ===== */
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:5px;
  margin:28px 0 4px;font-size:13px;color:var(--text-3)}
.breadcrumb a{color:var(--text-3);font-weight:560}
.breadcrumb a:hover{color:var(--accent-d);text-decoration:none}
.breadcrumb [aria-current="page"]{color:var(--text-2);font-weight:600}
.breadcrumb .bc-sep{display:inline-flex;color:var(--text-3);opacity:.55}
.breadcrumb .bc-sep svg{width:13px;height:13px}

/* ===== Header ===== */
header.site{position:sticky;top:0;z-index:40;
  background:color-mix(in srgb,var(--bg) 84%,transparent);
  backdrop-filter:saturate(180%) blur(14px);-webkit-backdrop-filter:saturate(180%) blur(14px);
  border-bottom:1px solid var(--border)}

/* Brand bar (parent site): logo + editorial nav + search + theme toggle */
.brandbar{border-bottom:1px solid var(--border)}
.brandbar .wrap{display:flex;align-items:center;gap:14px;height:50px}
.brand-logo{display:inline-flex;align-items:center;flex:none}
.brand-logo img{height:30px;width:auto;display:block}
[data-theme="dark"] .brand-logo img,[data-theme="dark"] .foot-logo img{filter:invert(1)}
.brandnav{display:flex;gap:1px;margin-left:auto;flex-wrap:wrap}
.brandnav a{color:var(--text-2);font-size:13px;font-weight:560;padding:7px 11px;
  border-radius:var(--r-sm);transition:background .15s,color .15s}
.brandnav a:hover{color:var(--text);background:var(--surface-3);text-decoration:none}
.brand-search{display:inline-flex;align-items:center;justify-content:center;flex:none;
  width:36px;height:36px;color:var(--text-2);border-radius:var(--r-sm);
  transition:background .15s,color .15s}
.brand-search:hover{color:var(--text);background:var(--surface-3);text-decoration:none}
.brand-search svg{width:18px;height:18px}

/* Tools bar (this subdomain): section label + category nav */
.toolsbar .wrap{display:flex;align-items:center;gap:10px;height:56px}
.logo{display:inline-flex;align-items:center;gap:10px;font-weight:680;font-size:15px;color:var(--text);white-space:nowrap}
.logo:hover{text-decoration:none}
.logo .dot{width:10px;height:10px;border-radius:var(--r-full);background:var(--accent);
  box-shadow:0 0 0 4px var(--accent-soft);flex:none}
#siteNav{display:flex;gap:2px;margin-left:8px;flex-wrap:wrap}
.nav-editorial{display:none}
.theme-toggle{display:inline-flex;align-items:center;justify-content:center;flex:none;
  width:40px;height:40px;background:var(--surface);border:1px solid var(--border);
  color:var(--text);border-radius:var(--r-sm);cursor:pointer;font-size:16px;line-height:1;
  transition:background .15s,border-color .15s}
.theme-toggle:hover{background:var(--surface-3);border-color:var(--border-2)}
.theme-toggle:focus-visible{outline:none;box-shadow:var(--ring)}
.nav-toggle{display:none;align-items:center;justify-content:center;flex:none;
  width:40px;height:40px;background:var(--surface);border:1px solid var(--border);
  color:var(--text);border-radius:var(--r-sm);cursor:pointer;
  transition:background .15s,border-color .15s}
.nav-toggle:hover{background:var(--surface-3);border-color:var(--border-2)}
.nav-toggle:focus-visible{outline:none;box-shadow:var(--ring)}
.nav-toggle svg{width:20px;height:20px}

main{padding:40px 0 80px}

/* ===== Hero (hub) ===== */
.hero{padding:8px 0 16px;margin-bottom:8px}
.hero .wrap{display:grid;grid-template-columns:1.05fr .95fr;gap:44px;align-items:center}
.hero-copy{min-width:0}
.hero .eyebrow{display:inline-flex;align-items:center;gap:7px;font-size:12px;font-weight:600;letter-spacing:.01em;color:var(--accent-d);
  background:var(--accent-soft);padding:6px 13px;border-radius:var(--r-full);margin-bottom:20px;border:1px solid var(--accent-soft-2)}
.hero h1{font-size:clamp(34px,5vw,52px);line-height:1.06;margin:0 0 18px;letter-spacing:-.028em;max-width:16ch}
.hero p{font-size:17px;line-height:1.62;color:var(--text-2);margin:0;max-width:54ch}
.hero-art{width:100%;height:auto;border-radius:var(--r-xl);display:block}

/* trust chip row */
.trust{display:flex;flex-wrap:wrap;gap:9px;margin-top:26px;list-style:none;padding:0}
.trust li{display:inline-flex;align-items:center;gap:7px;font-size:13px;color:var(--text-2);font-weight:550;
  background:var(--surface);border:1px solid var(--border);border-radius:var(--r-full);padding:7px 13px;box-shadow:var(--shadow-xs)}
.trust li svg{width:15px;height:15px;color:var(--accent);flex:none}

/* ===== Page header / tool hero ===== */
h1{font-size:clamp(30px,4vw,40px);line-height:1.12;margin:0 0 10px;letter-spacing:-.025em}
.tool-hero{margin:0 0 26px}
.tool-hero h1{margin:0 0 12px}
.tool-hero .lede{margin:0 0 18px}
.eyebrow,.badge-cat{display:inline-flex;align-items:center;gap:6px;font-size:12px;font-weight:650;letter-spacing:.02em;
  text-transform:uppercase;color:var(--accent-d);background:var(--accent-soft);border:1px solid var(--accent-soft-2);
  padding:5px 11px;border-radius:var(--r-full);margin-bottom:16px}
.eyebrow svg,.badge-cat svg{width:14px;height:14px;flex:none}
.chips{display:flex;flex-wrap:wrap;gap:8px;list-style:none;margin:0;padding:0}
.chips li,.chip{display:inline-flex;align-items:center;gap:6px;font-size:12.5px;font-weight:550;color:var(--text-2);
  background:var(--surface);border:1px solid var(--border);border-radius:var(--r-full);padding:6px 12px}
.chips li svg,.chip svg{width:14px;height:14px;color:var(--accent);flex:none}
.chip.warn{color:var(--warn);background:var(--warn-soft);border-color:var(--warn-soft-2)}
.chip.warn svg{color:var(--warn)}

/* ===== Cards / grid ===== */
.grid{display:grid;gap:18px;grid-template-columns:repeat(auto-fill,minmax(252px,1fr))}
.card{position:relative;background:var(--surface);border:1px solid var(--border);
  border-radius:var(--r-lg);padding:22px 22px 48px;display:block;box-shadow:var(--shadow-xs);
  transition:transform .18s var(--ease-out),box-shadow .18s var(--ease-out),border-color .18s var(--ease-out)}
.card:hover{box-shadow:var(--shadow-hover);border-color:var(--accent-soft-2);text-decoration:none}
.card:active{transform:scale(.99)}
.card .ico,.card .card-ic{display:inline-flex;align-items:center;justify-content:center;width:42px;height:42px;
  border-radius:var(--r);background:var(--accent-soft);color:var(--accent-d);margin:0 0 14px;
  transition:transform .18s var(--ease-out),background .16s}
.card .ico svg,.card .card-ic svg{width:21px;height:21px}
.card .cat{display:block;font-size:11px;font-weight:650;letter-spacing:.05em;text-transform:uppercase;
  color:var(--text-3);margin:0 0 5px}
.card h3{margin:0 0 6px;font-size:16px;font-weight:680;color:var(--text)}
.card p{margin:0;color:var(--text-2);font-size:13.5px;line-height:1.55}
.card .more{position:absolute;left:22px;bottom:18px;display:inline-flex;align-items:center;gap:6px;
  font-size:13px;font-weight:600;color:var(--accent-d)}
.card .more svg{width:15px;height:15px;transition:transform .18s var(--ease-out)}
/* legacy floating arrow (kept for any card using .go) */
.card .go{position:absolute;top:22px;right:20px;color:var(--text-3);transition:transform .18s var(--ease-out),color .16s}
.card .badge-most{position:absolute;top:18px;right:18px}
/* transform-based hover only on real pointers (avoids sticky-hover on touch) */
@media (hover:hover) and (pointer:fine){
  .card:hover{transform:translateY(-3px)}
  .card:hover .card-ic,.card:hover .ico{transform:scale(1.04)}
  .card:hover .more svg{transform:translateX(2px)}
  .card:hover .go{transform:translateX(3px);color:var(--accent)}
}

/* featured cards */
.featured-grid{display:grid;gap:18px;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));margin:0 0 8px}
.card.featured,.tool-featured{position:relative;background:linear-gradient(165deg,var(--accent-soft) 0%,var(--surface) 58%);
  border:1px solid var(--accent-soft-2);border-radius:var(--r-lg);padding:24px 24px 52px;display:block;
  box-shadow:var(--shadow-xs);transition:transform .18s var(--ease-out),box-shadow .18s var(--ease-out),border-color .16s}
.tool-featured:hover{box-shadow:var(--shadow-hover);text-decoration:none}
.tool-featured:active{transform:scale(.99)}
@media (hover:hover) and (pointer:fine){.tool-featured:hover{transform:translateY(-3px)}}
.tool-featured h3{margin:14px 0 7px;font-size:18px;font-weight:720}
.tool-featured p{margin:0 0 14px;color:var(--text-2);font-size:14px;line-height:1.55}
.tool-featured .chips{margin-bottom:4px}

/* ===== Browse by category ===== */
.browse{display:flex;flex-wrap:wrap;gap:10px;margin:0 0 8px}
.browse a{display:inline-flex;align-items:center;gap:8px;font-size:13.5px;font-weight:600;color:var(--text);
  background:var(--surface);border:1px solid var(--border);border-radius:var(--r-full);padding:9px 16px;box-shadow:var(--shadow-xs);
  transition:border-color .15s,color .15s,background .15s}
.browse a:hover{border-color:var(--accent-soft-2);color:var(--accent-d);background:var(--accent-soft);text-decoration:none}
.browse a svg{width:16px;height:16px;color:var(--accent-d)}

/* ===== Section blocks ===== */
.cat-block{margin:0 0 52px;scroll-margin-top:84px}
.cat-head{margin:0 0 18px}
.cat-block>h2,.cat-head>h2,.section-head>h2{font-size:clamp(20px,2.6vw,26px);margin:0 0 6px;letter-spacing:-.02em}
.cat-block>h2 a{color:var(--text)}
.cat-block>h2 a:hover{color:var(--accent-d);text-decoration:none}
.cat-head p,.section-head p{margin:0;color:var(--text-2);font-size:15px;max-width:62ch}
.section-head{margin:0 0 22px}

/* ===== Tool shell ===== */
.tool-shell{background:var(--surface);border:1px solid var(--border);border-radius:var(--r-xl);
  box-shadow:var(--shadow);overflow:hidden;margin:0 0 28px}
.tool-shell__head{display:flex;align-items:center;gap:12px;flex-wrap:wrap;padding:18px 22px;
  border-bottom:1px solid var(--border);background:var(--surface-2)}
.tool-shell__title{font-size:15px;font-weight:700;color:var(--text);margin:0}
.tool-shell__meta{font-size:12.5px;color:var(--text-3);margin:0}
.tool-shell__status{margin-left:auto;display:inline-flex;align-items:center;gap:7px;font-size:12.5px;font-weight:600;
  color:var(--text-2);background:var(--surface);border:1px solid var(--border);border-radius:var(--r-full);padding:5px 12px}
.tool-shell__status .dot{width:8px;height:8px;border-radius:var(--r-full);background:var(--text-3);flex:none}
.tool-shell__status.live{color:var(--accent-d);border-color:var(--accent-soft-2);background:var(--accent-soft)}
.tool-shell__status.live .dot{background:var(--accent);animation:pulse 1.6s infinite}
.tool-shell__status.warn{color:var(--warn);background:var(--warn-soft);border-color:var(--warn-soft-2)}
.tool-shell__status.warn .dot{background:var(--warn)}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.35}}
.tool-shell__help{padding:14px 22px 0;color:var(--text-2);font-size:14px;margin:0}
.tool-shell__body{padding:22px}
.tool-shell__foot{display:flex;align-items:center;gap:9px;padding:13px 22px;border-top:1px solid var(--border);
  background:var(--surface-2);color:var(--text-3);font-size:12.5px;line-height:1.5}
.tool-shell__foot svg{width:15px;height:15px;flex:none;color:var(--accent)}
/* flatten a nested card/panel when it sits directly inside a shell body (avoids double framing) */
.tool-shell__body>.panel,.tool-shell__body>.conv,.tool-shell__body>.card{border:0;box-shadow:none;background:transparent;padding:0;margin:0}
.tool-shell__body>*:first-child{margin-top:0}
.tool-shell__body>*:last-child{margin-bottom:0}
.tool-shell__body .toolbar:last-child{margin-bottom:0}

/* ===== Tool 2-col layout (lower content + side rail) ===== */
.tool-layout{display:grid;grid-template-columns:1fr 320px;gap:36px;align-items:start;margin-top:48px}
.tool-layout__main{min-width:0}
.tool-layout__rail{display:flex;flex-direction:column;gap:18px;position:sticky;top:84px}
.fact-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--r-lg);padding:20px;box-shadow:var(--shadow-xs)}
.fact-card h3{font-size:14px;font-weight:680;margin:0 0 14px}
.fact-card dl{margin:0;display:grid;grid-template-columns:auto 1fr;gap:9px 14px}
.fact-card dt{color:var(--text-3);font-size:12.5px;font-weight:600}
.fact-card dd{margin:0;color:var(--text);font-size:12.5px;font-weight:550;text-align:right}
.fact-card.privacy{background:var(--accent-soft);border-color:var(--accent-soft-2)}
.fact-card.privacy h3{color:var(--accent-d)}
.fact-card.privacy ul{list-style:none;margin:0;padding:0}
.fact-card.privacy li{display:flex;gap:9px;align-items:flex-start;font-size:13px;color:var(--text-2);margin:0 0 10px;line-height:1.45}
.fact-card.privacy li:last-child{margin-bottom:0}
.fact-card.privacy li svg{width:15px;height:15px;flex:none;margin-top:2px;color:var(--accent-d)}

/* ===== Metric grid (diagnostic readouts) ===== */
.sensor-group{margin:0 0 22px}
.sensor-group:last-child{margin-bottom:0}
.sensor-group h3{font-size:15px;font-weight:680;margin:0 0 3px}
.sensor-group .sg-note{margin:0 0 12px;color:var(--text-3);font-size:13px}
.metric-grid{display:grid;gap:12px;grid-template-columns:repeat(auto-fill,minmax(150px,1fr))}
.metric{background:var(--surface-2);border:1px solid var(--border);border-radius:var(--r);padding:14px 16px;min-width:0}
.metric .m-label{font-size:11.5px;font-weight:600;color:var(--text-3);text-transform:uppercase;letter-spacing:.04em;margin:0 0 6px}
.metric .m-value{font-family:var(--mono);font-size:24px;font-weight:600;color:var(--text);line-height:1.1;word-break:break-word}
.metric .m-unit{font-size:12px;color:var(--text-3);font-family:var(--font);margin-left:4px}
.metric.unsupported .m-value{font-family:var(--font);font-size:14px;color:var(--text-3);font-weight:500}

/* ===== Empty / state cards ===== */
.state-card{display:flex;flex-direction:column;align-items:flex-start;gap:6px;
  background:var(--surface-2);border:1px dashed var(--border-2);border-radius:var(--r-lg);padding:22px}
.state-card h3{font-size:15px;font-weight:680;margin:0}
.state-card p{margin:0;color:var(--text-2);font-size:14px;line-height:1.5}
.state-card .btn{margin-top:8px}
.state-card.error{background:var(--danger-soft);border-color:var(--danger-soft-2);border-style:solid}
.state-card.error h3{color:var(--danger)}

/* ===== Panels ===== */
.panel{background:var(--surface);border:1px solid var(--border);border-radius:var(--r-xl);
  padding:24px;box-shadow:var(--shadow-xs);margin:0 0 20px}

/* ===== Forms ===== */
.field{margin:0 0 18px}
label{display:block;font-size:13px;font-weight:550;color:var(--text-2);margin-bottom:7px}
input,select,textarea{width:100%;font:inherit;font-size:15px;color:var(--text);background:var(--surface);
  border:1px solid var(--border-2);border-radius:var(--r-input);padding:0 14px;height:44px;
  transition:border-color .15s,box-shadow .15s}
textarea{height:auto;padding:11px 14px}
input::placeholder{color:var(--text-3)}
input:focus,select:focus,textarea:focus{outline:none;border-color:var(--accent);box-shadow:var(--ring)}
select{appearance:none;cursor:pointer;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%238a9098' stroke-width='3'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat:no-repeat;background-position:right 14px center;padding-right:36px}

/* ===== Buttons ===== */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:42px;
  background:var(--accent);color:#fff;border:1px solid transparent;border-radius:var(--r-sm);
  padding:0 18px;font:inherit;font-size:14px;font-weight:620;cursor:pointer;box-shadow:var(--shadow-xs);
  transition:background .15s,transform .12s var(--ease-out),box-shadow .15s,border-color .15s}
[data-theme="dark"] .btn{color:#08130d}
.btn:hover{background:var(--accent-d);text-decoration:none}
[data-theme="dark"] .btn:hover{background:var(--accent-d);color:#08130d}
.btn:active{transform:scale(.97)}
.btn:focus-visible{outline:none;box-shadow:var(--ring)}
.btn svg{width:17px;height:17px}
.btn.secondary{background:var(--surface);color:var(--text);border-color:var(--border-2);box-shadow:var(--shadow-xs)}
.btn.secondary:hover{background:var(--surface-3);border-color:var(--border-2)}
.btn.ghost{background:transparent;color:var(--text-2);border-color:transparent;box-shadow:none}
.btn.ghost:hover{background:var(--surface-3);color:var(--text)}
.btn.sm{height:34px;padding:0 13px;font-size:13px}
.btn:disabled{opacity:.55;cursor:not-allowed}
.toolbar{display:flex;gap:10px;flex-wrap:wrap;margin:0 0 22px;align-items:center}

/* ===== Output / code ===== */
.out{background:var(--surface-2);border:1px solid var(--border);border-radius:var(--r-input);
  padding:14px 16px;font-family:var(--mono);font-size:13.5px;white-space:pre-wrap;word-break:break-word;color:var(--text)}
.row{display:flex;gap:14px;flex-wrap:wrap}
.row>*{flex:1;min-width:160px}
code{font-family:var(--mono);font-size:.9em;background:var(--surface-2);
  padding:2px 6px;border-radius:6px;border:1px solid var(--border)}

/* ===== Callout note ===== */
.note{display:flex;gap:10px;align-items:flex-start;border:1px solid var(--border);
  background:var(--surface-2);border-radius:var(--r-input);padding:12px 14px;font-size:13.5px;
  line-height:1.5;color:var(--text-2);margin:16px 0 0}
.note svg{width:16px;height:16px;flex:none;margin-top:1px;color:var(--text-3)}
.note.warn{background:var(--warn-soft);border-color:var(--warn-soft-2);color:var(--warn)}
.note.warn svg{color:var(--warn)}
.note.info{background:var(--info-soft);border-color:transparent}
.note strong{color:var(--text);font-weight:600}
.note.warn strong{color:var(--warn)}

/* ===== Badges / tags ===== */
.tag{display:inline-flex;align-items:center;height:22px;font-size:12px;font-weight:600;letter-spacing:.01em;
  padding:0 9px;border-radius:var(--r-full);border:1px solid var(--border);
  background:var(--surface-3);color:var(--text-2);text-transform:capitalize;vertical-align:middle}
.tag.neutral{background:var(--surface-3);color:var(--text-2);border-color:var(--border)}
.tag.info{background:var(--info-soft);color:var(--info);border-color:transparent}
.tag.safe,.tag.success{background:var(--accent-soft);color:var(--accent-d);border-color:transparent}
.tag.warn,.tag.caution{background:var(--warn-soft);color:var(--warn);border-color:transparent}
.tag.danger,.tag.destructive{background:var(--danger-soft);color:var(--danger);border-color:transparent}

/* ===== Tabs (segmented) ===== */
.infoblock{margin-top:48px}
.infoblock>h2{font-size:clamp(20px,2.6vw,26px);margin:0 0 14px}
.tabs{background:var(--surface);border:1px solid var(--border);border-radius:var(--r-lg);
  overflow:hidden;box-shadow:var(--shadow-xs)}
.tab-nav{display:flex;flex-wrap:wrap;gap:4px;padding:8px;border-bottom:1px solid var(--border);background:var(--surface-2)}
.tab-btn{background:transparent;border:1px solid transparent;color:var(--text-2);padding:9px 16px;cursor:pointer;
  font:inherit;font-size:14px;font-weight:550;border-radius:var(--r-sm);transition:background .15s,color .15s,box-shadow .15s}
.tab-btn:hover{color:var(--text)}
.tab-btn.active{color:var(--accent-d);background:var(--surface);border-color:var(--border);box-shadow:var(--shadow-xs);font-weight:650}
.tab-btn:focus-visible{outline:none;box-shadow:var(--ring)}
.tab-panel{display:none;padding:24px 26px}
.tab-panel.active{display:block;animation:fade .18s var(--ease-out)}
@keyframes fade{from{opacity:0;transform:translateY(4px)}to{opacity:1;transform:none}}
.tab-panel h3{margin:0 0 10px;font-size:16px;font-weight:680}
.tab-panel p{margin:0 0 12px;color:var(--text-2);line-height:1.62}
.tab-panel ul{margin:0 0 12px;padding-left:20px;color:var(--text-2)}
.tab-panel li{margin:7px 0}
.tab-panel>*:last-child,.tab-panel li:last-child{margin-bottom:0}

/* ===== Prose / SEO content ===== */
.prose{margin-top:64px;max-width:72ch}
.prose h2{font-size:clamp(22px,2.8vw,28px);margin:0 0 14px;letter-spacing:-.02em}
.prose h3{font-size:18px;margin:30px 0 8px}
.prose p{color:var(--text-2);margin:0 0 14px;line-height:1.65}
.prose ul{color:var(--text-2);padding-left:22px;margin:0 0 14px}
.prose li{margin:7px 0}

/* about two-col */
.about-grid{display:grid;grid-template-columns:1.6fr 1fr;gap:36px;align-items:start;margin-top:64px}
.about-grid .prose{margin-top:0}
.benefit{background:var(--surface);border:1px solid var(--border);border-radius:var(--r-lg);padding:24px;box-shadow:var(--shadow-xs)}
.benefit h3{font-size:15px;margin:0 0 16px;font-weight:680}
.benefit ul{list-style:none;margin:0;padding:0}
.benefit li{display:flex;gap:10px;align-items:flex-start;font-size:14px;color:var(--text-2);margin:0 0 13px;line-height:1.45}
.benefit li:last-child{margin-bottom:0}
.benefit li svg{width:16px;height:16px;flex:none;margin-top:2px;color:var(--accent-d)}
.benefit li strong{color:var(--text);font-weight:600}

/* ===== Trust strip (privacy by design) ===== */
.trust-strip{margin-top:64px}
.trust-strip .section-head{text-align:center;margin-bottom:26px}
.trust-strip .section-head p{margin-inline:auto}
.trust-cards{display:grid;gap:18px;grid-template-columns:repeat(auto-fit,minmax(220px,1fr))}
.trust-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--r-lg);padding:22px;box-shadow:var(--shadow-xs)}
.trust-card .tc-ic{display:inline-flex;align-items:center;justify-content:center;width:40px;height:40px;
  border-radius:var(--r);background:var(--accent-soft);color:var(--accent-d);margin-bottom:14px}
.trust-card .tc-ic svg{width:20px;height:20px}
.trust-card h3{font-size:15px;font-weight:680;margin:0 0 6px}
.trust-card p{margin:0;color:var(--text-2);font-size:13.5px;line-height:1.55}

/* FAQ accordion */
.faq{margin-top:14px;border-top:1px solid var(--border)}
.faq details{border-bottom:1px solid var(--border)}
.faq summary{cursor:pointer;padding:18px 8px;font-weight:620;font-size:15.5px;color:var(--text);list-style:none;
  display:flex;justify-content:space-between;align-items:center;gap:12px;border-radius:var(--r-sm);
  transition:background .15s,color .15s}
.faq summary:hover{background:var(--surface-2)}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";color:var(--accent-d);font-weight:400;font-size:22px;transition:transform .2s;flex:none}
.faq details[open] summary::after{content:"\2212"}
.faq details[open] summary{color:var(--accent-d)}
.faq .answer{padding:0 8px 18px;color:var(--text-2);font-size:14.5px;line-height:1.65;max-width:70ch}
.faq .answer p{margin:0 0 10px}
.faq .answer>*:last-child{margin-bottom:0}

/* ===== Related links ===== */
.related{margin-top:64px;padding-top:36px;border-top:1px solid var(--border)}
.related h2{font-size:clamp(18px,2.2vw,22px);margin:0 0 18px}
.related .grid{grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:16px}
.related .card{padding:18px 18px 44px}
.related .card h3{font-size:15px}
.related .card-ic{width:36px;height:36px;border-radius:10px;margin:0 0 10px}
.related .card-ic svg{width:18px;height:18px}

/* ===== Toast ===== */
.toast{position:fixed;bottom:24px;left:50%;transform:translateX(-50%) translateY(8px);
  background:var(--text);color:var(--bg);padding:11px 18px;border-radius:var(--r-full);
  font-size:14px;font-weight:500;opacity:0;transition:opacity .2s var(--ease-out),transform .2s var(--ease-out);
  pointer-events:none;z-index:60;box-shadow:var(--shadow-lg)}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}

/* ===== Footer ===== */
footer.site{border-top:1px solid var(--border);margin-top:72px;background:var(--surface)}
footer.site .wrap{padding:48px 24px 32px}
footer.site .cols{display:flex;flex-wrap:wrap;gap:32px;justify-content:space-between}
.foot-brand{max-width:300px}
.foot-logo{display:inline-block;margin-bottom:14px}
.foot-logo img{height:40px;width:auto;display:block}
footer.site .muted{color:var(--text-3);font-size:13px;line-height:1.6;margin:0}
.socials{display:flex;gap:8px;margin-top:16px}
.socials a{display:inline-flex;align-items:center;justify-content:center;width:36px;height:36px;
  border:1px solid var(--border);border-radius:var(--r-sm);color:var(--text-3);
  transition:background .15s,border-color .15s,color .15s}
.socials a:hover{color:var(--accent-d);border-color:var(--border-2);background:var(--surface-3);text-decoration:none}
.socials svg{width:18px;height:18px}
footer.site .cols>nav{display:flex;flex-direction:column;gap:10px}
footer.site .cols>nav a{color:var(--text-2);font-size:13.5px;font-weight:500}
footer.site .cols>nav a:hover{color:var(--text)}
footer.site .cols>nav a.col-head{color:var(--text);font-weight:680;font-size:13px}
.newsletter{display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap;
  margin-top:36px;padding:20px 24px;background:var(--surface-2);border:1px solid var(--border);border-radius:var(--r-lg)}
.newsletter__text{display:flex;flex-direction:column;gap:3px}
.newsletter__text strong{color:var(--text);font-size:15px;font-weight:680}
.newsletter__text span{color:var(--text-3);font-size:13px}
.newsletter__btn{flex:none;background:var(--accent);color:#fff;font-weight:600;font-size:14px;
  padding:11px 22px;border-radius:var(--r-sm);transition:background .15s,transform .15s}
.newsletter__btn:hover{background:var(--accent-d);text-decoration:none}
[data-theme="dark"] .newsletter__btn{color:#0c110e}
footer.site .legal{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:14px;
  margin-top:28px;padding-top:20px;border-top:1px solid var(--border);
  color:var(--text-3);font-size:13px;line-height:1.55}
.legal-nav{display:flex;flex-wrap:wrap;gap:4px 16px}
.legal-nav a{color:var(--text-3);font-weight:500}
.legal-nav a:hover{color:var(--text)}

/* ===== Tables ===== */
table{width:100%;border-collapse:collapse}
th,td{text-align:left;padding:14px 12px;border-bottom:1px solid var(--border);font-size:14px;vertical-align:middle}
th{color:var(--text-3);font-weight:600;font-size:11.5px;text-transform:uppercase;letter-spacing:.05em;
  background:var(--surface)}
tbody tr{transition:background .12s}
tbody tr:hover{background:var(--surface-2)}

/* ===== Responsive ===== */
@media(max-width:900px){
  .tool-layout{grid-template-columns:1fr;gap:0}
  .tool-layout__rail{position:static;flex-direction:row;flex-wrap:wrap;margin-top:32px}
  .tool-layout__rail>*{flex:1;min-width:240px}
}
@media(max-width:820px){
  .about-grid{grid-template-columns:1fr;gap:28px}
  .hero .wrap{grid-template-columns:1fr;gap:24px}
  .hero-art{display:none}
}
@media(max-width:560px){
  .wrap{padding:0 16px}
  .brandbar .wrap{gap:10px}
  .newsletter{padding:18px 16px}
  main{padding:28px 0 64px}
  .panel,.tool-shell__body{padding:18px}
  .card{padding:18px 18px 44px}
  .tab-panel{padding:18px}
  .tool-shell__head,.tool-shell__help,.tool-shell__foot{padding-left:16px;padding-right:16px}
  footer.site .wrap{padding:36px 16px 28px}
  .browse{flex-wrap:nowrap;overflow-x:auto;-webkit-overflow-scrolling:touch;padding-bottom:4px;margin-bottom:0}
  .browse a{white-space:nowrap}
  .metric .m-value{font-size:21px}
}

/* ===== Dropdown nav ===== */
.dropdown{position:relative;display:inline-block}
.drop-btn{display:inline-flex;align-items:center;gap:5px;color:var(--text-2);font-size:13px;font-weight:500;
  padding:8px 12px;border-radius:var(--r-sm);cursor:pointer;white-space:nowrap;
  transition:background .15s,color .15s}
.drop-btn:hover{color:var(--text);background:var(--surface-3);text-decoration:none}
.dropdown.active>.drop-btn{color:var(--accent-d);background:var(--accent-soft)}
.drop-menu{position:absolute;top:calc(100% + 6px);left:0;min-width:200px;z-index:50;
  background:var(--surface);border:1px solid var(--border);border-radius:var(--r);
  box-shadow:var(--shadow);padding:6px;display:none;flex-direction:column;gap:2px}
.dropdown:hover .drop-menu,.dropdown.open .drop-menu{display:flex}
.drop-menu a{display:block;color:var(--text-2);font-size:13px;font-weight:500;padding:8px 12px;
  border-radius:var(--r-sm);white-space:nowrap;transition:background .15s,color .15s}
.drop-menu a:hover{color:var(--text);background:var(--surface-3);text-decoration:none}
.drop-menu a.active{color:var(--accent-d);background:var(--accent-soft)}
@media(max-width:720px){
  .brandnav{display:none}
  .brand-search{margin-left:auto}
  .toolsbar .wrap{flex-wrap:wrap;height:auto;padding-top:10px;padding-bottom:10px;gap:10px}
  .nav-toggle{display:inline-flex;margin-left:auto}
  #siteNav{display:none;flex-direction:column;gap:4px;width:100%;margin-left:0}
  #siteNav.open{display:flex}
  .dropdown{display:block;width:100%}
  .drop-btn{width:100%;justify-content:space-between}
  .drop-menu{position:static;min-width:0;width:100%;box-shadow:none;border-color:var(--border);
    margin-top:2px;background:var(--surface-2)}
  .nav-editorial{display:flex;flex-direction:column;gap:4px;width:100%;
    margin-top:8px;padding-top:12px;border-top:1px solid var(--border)}
  .nav-editorial__head{font-size:11px;font-weight:680;letter-spacing:.05em;text-transform:uppercase;
    color:var(--text-3);padding:4px 12px}
  .nav-editorial a{color:var(--text-2);font-size:14px;font-weight:500;padding:9px 12px;border-radius:var(--r-sm)}
  .nav-editorial a:hover{background:var(--surface-3);color:var(--text);text-decoration:none}
}

/* ===== Shared tool components ===== */
/* Permission prompt card */
.perm-prompt{display:flex;flex-direction:column;align-items:flex-start;gap:14px;
  background:var(--surface-2);border:1px solid var(--border);border-radius:var(--r-lg);
  padding:22px;color:var(--text-2);font-size:14.5px;line-height:1.55}
.perm-prompt p{margin:0}

/* Pass/fail pill badge */
.badge{display:inline-flex;align-items:center;gap:6px;height:24px;font-size:12px;font-weight:600;
  letter-spacing:.01em;padding:0 11px;border-radius:var(--r-full);border:1px solid var(--border);
  background:var(--surface-3);color:var(--text-2);vertical-align:middle}
.badge.pass{background:var(--accent-soft);color:var(--accent-d);border-color:transparent}
.badge.fail{background:var(--danger-soft);color:var(--danger);border-color:transparent}

/* Stage for canvas/video */
.stage{position:relative;background:#000;border:1px solid var(--border);border-radius:var(--r-lg);
  overflow:hidden;width:100%}
.stage>canvas,.stage>video,.stage>img{display:block;width:100%;height:auto}
.stage.full{position:fixed;inset:0;z-index:70;width:100vw;height:100vh;border-radius:0;border:0}
.stage.full>canvas,.stage.full>video,.stage.full>img{width:100%;height:100%;object-fit:contain}

/* Meter / progress track */
.meter{position:relative;width:100%;height:10px;background:var(--surface-3);border:1px solid var(--border);
  border-radius:var(--r-full);overflow:hidden}
.meter>span{display:block;height:100%;width:0;background:var(--accent);border-radius:var(--r-full);
  transition:width .12s linear}

/* Big monospace reading */
.reading{font-family:var(--mono);font-size:clamp(28px,7vw,44px);font-weight:600;line-height:1.1;
  color:var(--text);background:var(--surface-2);border:1px solid var(--border);border-radius:var(--r-lg);
  padding:20px 22px;letter-spacing:-.01em}

/* Responsive key/value grid */
.kvs{display:grid;grid-template-columns:repeat(auto-fill,minmax(180px,1fr));gap:14px 24px;margin:0}
.kvs>div{display:flex;flex-direction:column;gap:3px;min-width:0}
.kvs .k{font-size:12px;font-weight:500;color:var(--text-3);text-transform:uppercase;letter-spacing:.04em}
.kvs .v{font-family:var(--mono);font-size:15px;color:var(--text);word-break:break-word}

/* ── Tool icons (Lucide) ───────────────────────────────────────────── */
h1.has-ic{display:flex;align-items:center;gap:14px}
.h1-ic{flex:none;width:44px;height:44px;color:var(--accent-d);background:var(--accent-soft);border:1px solid var(--accent-soft-2);border-radius:12px;padding:9px;box-sizing:border-box}

/* ── Category banner illustration ──────────────────────────────────── */
.cat-banner{width:100%;max-width:560px;height:auto;border-radius:var(--r-lg);border:1px solid var(--border);margin:4px 0 26px;display:block}

/* ── Keyboard focus ring (unify across custom-styled interactive els) ── */
a.card:focus-visible,.tool-featured:focus-visible,.browse a:focus-visible,
header.site nav a:focus-visible,.drop-btn:focus-visible,.drop-menu a:focus-visible,
.faq summary:focus-visible,footer.site nav a:focus-visible,.logo:focus-visible,
.brandnav a:focus-visible,.brand-search:focus-visible,.brand-logo:focus-visible,
.foot-logo:focus-visible,.socials a:focus-visible,.legal-nav a:focus-visible,
.newsletter__btn:focus-visible{
  outline:2px solid var(--accent);outline-offset:2px}

/* ── Touch targets: 44px minimum for icon buttons on coarse pointers ─── */
@media(pointer:coarse){
  .theme-toggle,.nav-toggle{width:44px;height:44px}
}

/* ── Reduced motion ────────────────────────────────────────────────── */
@media(prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important;scroll-behavior:auto!important}
}