:root{
  --ink:oklch(24% .02 40);--muted:oklch(52% .03 40);--paper:oklch(97% .008 40);
  --surface:oklch(100% .002 40);--line:oklch(90% .015 40);
  --accent:oklch(60% .17 45);--accent-dark:oklch(50% .15 45);--accent-soft:oklch(94% .05 55);
  --ok:oklch(58% .13 155);--danger:oklch(55% .19 25);
  --radius:18px;--shadow:0 14px 34px oklch(40% .05 45 / .10);
  --ease:cubic-bezier(.16,1,.3,1);
  /* Aliases consumed by pSEO subpages that share this stylesheet */
  --border:var(--line);--heading:var(--ink);--primary:var(--accent);
  font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  color:var(--ink);font-synthesis:none;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{background:var(--paper);font-size:16px;line-height:1.55;overflow-x:hidden}
button,input,select{font:inherit}button{cursor:pointer}a{color:inherit}
kbd{font-family:ui-monospace,"SF Mono",Menlo,Consolas,monospace}

/* --- Header --- */
.site-header{min-height:74px;display:flex;align-items:center;gap:32px;padding:0 clamp(16px,5vw,72px);border-bottom:1px solid var(--line);background:var(--surface);position:sticky;top:0;z-index:20}
.logo{font-size:18px;font-weight:850;letter-spacing:-.04em;text-decoration:none}
.logo span{color:var(--accent)}
.site-header nav{display:flex;gap:24px;margin-left:auto;font-size:14px;color:var(--muted)}
.site-header nav a{text-decoration:none}
.site-header nav a:hover{color:var(--accent-dark)}
.menu-btn{display:none;margin-left:auto;border:1px solid var(--line);background:var(--surface);padding:9px 14px;border-radius:10px;color:var(--ink)}

/* --- Layout / Hero --- */
.page-wrapper{max-width:1120px;margin:auto;padding:0 clamp(16px,5vw,72px) 80px}
.hero{padding:64px 0 36px;max-width:840px}
.hero-badge{display:inline-flex;align-items:center;gap:8px;text-transform:uppercase;letter-spacing:.1em;font-size:11px;font-weight:850;color:var(--accent-dark);background:var(--accent-soft);padding:7px 14px;border-radius:999px}
.page-title{font-size:clamp(40px,6.5vw,76px);line-height:1;letter-spacing:-.055em;margin:18px 0 18px;text-wrap:balance}
.page-sub{max-width:680px;color:var(--muted);font-size:18px;line-height:1.6}
.page-sub strong{color:var(--ink)}
.hero-note{display:inline-flex;align-items:center;gap:9px;margin-top:22px;color:var(--muted);font-size:13px}
.status-dot{width:8px;height:8px;border-radius:50%;background:var(--accent);box-shadow:0 0 0 5px var(--accent-soft)}

/* --- Upload Zone --- */
.upload-zone{margin-top:8px;border:2px dashed oklch(80% .05 45);border-radius:22px;background:var(--surface);cursor:pointer;transition:border-color .18s,background .18s,transform .18s var(--ease)}
.upload-zone:hover{border-color:var(--accent);background:var(--accent-soft)}
.upload-zone.drag-over{border-color:var(--accent);background:var(--accent-soft);transform:translateY(-2px)}
.upload-inner{display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;gap:8px;padding:clamp(40px,7vw,72px) 24px}
.upload-icon{width:56px;height:56px;border-radius:16px;background:var(--accent-soft);position:relative;margin-bottom:6px}
.upload-icon::before{content:"";position:absolute;inset:0;margin:auto;width:22px;height:22px;border:2.5px solid var(--accent-dark);border-radius:4px}
.upload-icon::after{content:"";position:absolute;left:50%;top:52%;width:9px;height:9px;transform:translate(-50%,-50%) rotate(45deg);border-top:2.5px solid var(--accent-dark);border-right:2.5px solid var(--accent-dark)}
.upload-title{font-size:20px;font-weight:800;letter-spacing:-.02em}
.upload-sub{color:var(--muted);font-size:14px;max-width:44ch}
.upload-btn{display:inline-flex;align-items:center;gap:9px;margin-top:14px;min-height:44px;padding:0 22px;border-radius:12px;background:var(--accent);color:oklch(99% .01 45);font-weight:800;border:1px solid var(--accent);transition:transform .18s var(--ease),background .18s}
.upload-btn:hover{transform:translateY(-2px);background:var(--accent-dark)}
#file-input{position:absolute;width:1px;height:1px;opacity:0;pointer-events:none}
/* File input is visually hidden but stays keyboard-focusable — surface a visible focus ring on the label */
.upload-inner:focus-within .upload-btn{outline:3px solid var(--accent);outline-offset:3px}
.upload-error{margin-top:16px;padding:11px 16px;border-radius:12px;background:oklch(96% .04 25);border:1px solid var(--danger);color:var(--danger);font-size:13px;font-weight:750;max-width:46ch;line-height:1.5}

/* --- Workspace --- */
.workspace{flex-direction:column;gap:18px;margin-top:8px}

/* --- Video player stage (dark on purpose) --- */
.player-container{background:oklch(26% .02 40);border-radius:var(--radius);padding:16px;box-shadow:0 18px 44px oklch(30% .04 45 / .18)}
#video-source{display:block;width:100%;max-width:100%;max-height:62vh;margin:auto;border-radius:12px;background:#000;cursor:pointer}
.player-controls{margin-top:14px}
.timeline-container{padding:2px 2px 10px}
.progress-bar{width:100%;height:6px;accent-color:var(--accent);cursor:pointer}
.controls-row{display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap}
.controls-left,.controls-center,.controls-right{display:flex;align-items:center;gap:10px}
.controls-center{flex:1;justify-content:center}
.ctrl-btn{display:inline-flex;align-items:center;justify-content:center;gap:7px;min-height:44px;min-width:44px;padding:0 12px;border-radius:11px;border:1px solid oklch(40% .02 40);background:oklch(32% .02 40);color:oklch(96% .01 40);font-weight:700;font-size:13px;transition:transform .18s var(--ease),background .18s,border-color .18s}
.ctrl-btn:hover{transform:translateY(-1px);background:oklch(38% .03 45);border-color:var(--accent)}
.scrub-btn{font-variant-numeric:tabular-nums}
.stroke-icon{display:block}
.time-display{color:oklch(88% .02 40);font-size:13px;font-variant-numeric:tabular-nums;white-space:nowrap}
.styled-select{min-height:44px;padding:0 12px;border-radius:11px;border:1px solid oklch(40% .02 40);background:oklch(32% .02 40);color:oklch(96% .01 40);font-weight:700;font-size:13px;cursor:pointer}

/* --- Action / export panel --- */
.action-panel{display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:22px 24px;box-shadow:var(--shadow)}
.action-info h2{font-size:20px;letter-spacing:-.03em}
.source-res{color:var(--muted);font-size:13px;margin-top:5px}
.source-res strong{color:var(--ink);font-variant-numeric:tabular-nums}
.action-controls{display:flex;align-items:center;gap:16px;flex-wrap:wrap}
.format-toggle{display:flex;gap:8px;flex-wrap:wrap}
.radio-label{position:relative;cursor:pointer}
.radio-label input{position:absolute;opacity:0;width:0;height:0}
.radio-custom{display:inline-flex;align-items:center;min-height:44px;padding:0 15px;border:1px solid var(--line);border-radius:11px;background:var(--paper);color:var(--muted);font-size:13px;font-weight:750;transition:border-color .18s,background .18s,color .18s}
.radio-label:hover .radio-custom{border-color:var(--accent)}
.radio-label input:checked+.radio-custom{background:var(--ink);border-color:var(--ink);color:var(--surface)}
.extract-btn{display:inline-flex;align-items:center;gap:10px;min-height:52px;padding:0 26px;border-radius:13px;border:1px solid var(--accent);background:var(--accent);color:oklch(99% .01 45);font-weight:850;font-size:15px;transition:transform .18s var(--ease),background .18s,box-shadow .18s}
.extract-btn:hover{transform:translateY(-2px);background:var(--accent-dark);box-shadow:0 12px 26px var(--accent-soft)}
.extract-btn.is-success,.extract-btn.is-success:hover{background:var(--ok);border-color:var(--ok);box-shadow:none;transform:none}
.extract-btn.is-error,.extract-btn.is-error:hover{background:var(--danger);border-color:var(--danger);box-shadow:none;transform:none}

/* --- Load different video --- */
.close-workspace{display:flex;justify-content:center;padding-top:2px}
.btn-text{background:none;border:0;color:var(--muted);font-weight:700;font-size:14px;text-decoration:underline;text-underline-offset:3px}
.btn-text:hover{color:var(--accent-dark)}

/* --- SEO content --- */
.seo-section{max-width:820px;margin:80px auto 0}
.seo-section h2{font-size:clamp(26px,3.6vw,40px);line-height:1.06;letter-spacing:-.05em;margin:48px 0 16px;text-wrap:balance}
.seo-section p{color:var(--muted);line-height:1.75;margin-bottom:14px;max-width:70ch}
.seo-section strong{color:var(--ink)}
.seo-section em{font-style:italic;color:var(--ink)}
.steps-list{margin:8px 0 8px 0;padding-left:0;list-style:none;counter-reset:step;display:grid;gap:12px}
.steps-list li{position:relative;padding:16px 18px 16px 56px;border:1px solid var(--line);border-radius:14px;background:var(--surface);color:var(--muted);line-height:1.6}
.steps-list li strong{color:var(--ink)}
.steps-list li::before{counter-increment:step;content:counter(step);position:absolute;left:16px;top:16px;width:28px;height:28px;display:flex;align-items:center;justify-content:center;border-radius:9px;background:var(--accent-soft);color:var(--accent-dark);font-weight:850;font-size:14px}
.comparison-schema{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin:20px 0}
.cmp-card{border:1px solid var(--line);border-radius:16px;padding:20px 22px;background:var(--surface)}
.cmp-card ul{margin:0;padding-left:18px;display:grid;gap:10px}
.cmp-card li{color:var(--muted);line-height:1.55;font-size:14px}
.cmp-card li strong{color:var(--ink)}
.cmp-title{font-weight:850;letter-spacing:-.02em;margin-bottom:14px;padding-bottom:12px;border-bottom:1px solid var(--line)}
.cmp-card.bad{background:oklch(97% .012 40)}
.cmp-card.bad .cmp-title{color:var(--muted)}
.cmp-card.good{border-color:oklch(82% .07 55);background:var(--accent-soft)}
.cmp-card.good .cmp-title{color:var(--accent-dark)}
.shortcut-list{list-style:none;margin:14px 0;padding:0;display:grid;gap:10px}
.shortcut-list li{display:flex;align-items:center;gap:12px;padding:12px 16px;border:1px solid var(--line);border-radius:12px;background:var(--surface);color:var(--muted)}
.shortcut-list li strong{color:var(--ink)}
.shortcut-list kbd{flex:none;min-width:34px;text-align:center;padding:5px 9px;border:1px solid var(--line);border-bottom-width:2px;border-radius:8px;background:var(--paper);color:var(--ink);font-size:13px;font-weight:700}
.format-support li{display:block}

/* --- FAQ --- */
.faq-section{max-width:820px;margin:72px auto 0}
.faq-heading{font-size:clamp(26px,3.6vw,40px);line-height:1.05;letter-spacing:-.05em;margin-bottom:8px;text-wrap:balance}
.faq-item{border-top:1px solid var(--line);padding:18px 0}
.faq-item summary{cursor:pointer;font-weight:800;letter-spacing:-.01em;list-style:none;display:flex;justify-content:space-between;gap:18px}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:'+';color:var(--accent-dark);font-size:22px;line-height:1}
.faq-item[open] summary::after{content:'−'}
.faq-item p{color:var(--muted);line-height:1.7;font-size:15px;margin-top:12px}
.faq-item p strong{color:var(--ink)}

/* --- Related --- */
.related-section{max-width:1120px;margin:72px auto 0}
.related-heading{font-size:14px;text-transform:uppercase;letter-spacing:.09em;color:var(--muted);margin-bottom:16px}
.related-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:12px}
.related-card{display:flex;align-items:center;padding:16px 18px;border:1px solid var(--line);border-radius:13px;background:var(--surface);text-decoration:none;font-weight:700;font-size:14px;transition:transform .18s var(--ease),border-color .18s,color .18s}
.related-card:hover{transform:translateY(-2px);border-color:var(--accent);color:var(--accent-dark)}

/* --- Footer --- */
.site-footer{margin-top:72px;padding:28px clamp(16px,5vw,72px);border-top:1px solid var(--line);color:var(--muted);font-size:13px;text-align:center}
.site-footer a{color:var(--accent-dark);text-decoration:none}

:focus-visible{outline:3px solid var(--accent);outline-offset:3px}

/* --- Utility classes reused by pSEO subpages --- */
.dt-container{max-width:1120px;margin-inline:auto;padding-inline:clamp(16px,5vw,72px)}
.dt-mb-16{margin-bottom:16px}

/* --- Responsive --- */
@media(max-width:900px){
  .comparison-schema{grid-template-columns:1fr}
  .action-panel{flex-direction:column;align-items:stretch}
  .action-controls{flex-direction:column;align-items:stretch}
  .extract-btn{justify-content:center}
  .controls-center{order:3;flex-basis:100%;justify-content:space-between}
  #video-source{max-height:52vh}
}
@media(max-width:640px){
  .site-header{min-height:62px;gap:16px}
  .site-header nav{display:none;position:absolute;top:62px;left:0;right:0;flex-direction:column;gap:16px;padding:16px;background:var(--surface);border-bottom:1px solid var(--line);z-index:15}
  .site-header nav.open{display:flex}
  .menu-btn{display:block}
  .hero{padding:44px 0 28px}
  .page-title{font-size:clamp(36px,11vw,60px)}
  .player-container{padding:10px}
  .format-toggle{width:100%}
  .radio-label,.radio-custom{flex:1;justify-content:center}
  input[type=text],input[type=number],select{font-size:16px}
}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{scroll-behavior:auto!important;transition-duration:.01ms!important}}