:root{
  --bg:#0a0a0f; --bg-2:#12121c; --text:#f2f2f7; --muted:#a0a0b4;
  --card:rgba(255,255,255,.055); --card-border:rgba(255,255,255,.12);
  --accent:#ff2d55; --accent-2:#ff5f6d; --track:rgba(255,255,255,.12);
  --shadow:0 24px 60px rgba(0,0,0,.5); --radius:22px;
}
[data-theme="light"]{
  --bg:#f4f4f8; --bg-2:#ffffff; --text:#16161e; --muted:#5b5b6e;
  --card:rgba(255,255,255,.72); --card-border:rgba(20,20,40,.1);
  --track:rgba(20,20,40,.12); --shadow:0 18px 46px rgba(30,30,60,.14);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Inter,Roboto,Helvetica,Arial,sans-serif;
  background:var(--bg);color:var(--text);line-height:1.6;font-size:18px;
  min-height:100vh;overflow-x:hidden;transition:background .35s,color .35s;
}
.glow{position:fixed;border-radius:50%;filter:blur(120px);opacity:.35;pointer-events:none;z-index:0}
.glow-a{width:520px;height:520px;background:var(--accent);top:-180px;left:-140px}
.glow-b{width:420px;height:420px;background:#5b5bd6;bottom:-160px;right:-120px}
[data-theme="light"] .glow{opacity:.16}

.site-header{
  position:sticky;top:0;z-index:10;display:flex;align-items:center;gap:28px;
  padding:16px 5vw;backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);
  background:color-mix(in srgb,var(--bg) 72%,transparent);border-bottom:1px solid var(--card-border);
}
.brand{display:flex;align-items:center;gap:12px;font-weight:800;font-size:20px;color:var(--text);text-decoration:none}
.main-nav{display:flex;gap:22px;margin-left:auto}
.main-nav a{color:var(--muted);text-decoration:none;font-size:16px;font-weight:600;transition:color .2s}
.main-nav a:hover{color:var(--text)}
.theme-toggle{
  border:1px solid var(--card-border);background:var(--card);color:var(--text);
  width:44px;height:44px;border-radius:14px;cursor:pointer;font-size:18px;
}
.theme-toggle .icon-sun{display:none}
[data-theme="light"] .theme-toggle .icon-sun{display:inline}
[data-theme="light"] .theme-toggle .icon-moon{display:none}

main{position:relative;z-index:1;max-width:1060px;margin:0 auto;padding:0 5vw 60px}
.hero{padding:96px 0 72px;text-align:center}
.eyebrow{color:var(--accent-2);font-weight:700;letter-spacing:.08em;text-transform:uppercase;font-size:14px;margin-bottom:18px}
.hero h1{font-size:clamp(38px,6vw,62px);line-height:1.08;font-weight:850;letter-spacing:-.02em;margin-bottom:22px}
.lede{color:var(--muted);font-size:20px;max-width:720px;margin:0 auto 34px}
.hero-cta{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}

.btn{
  display:inline-block;border:none;cursor:pointer;font-weight:700;font-size:17px;
  padding:14px 26px;border-radius:16px;text-decoration:none;transition:transform .15s,box-shadow .15s,background .2s;
}
.btn:active{transform:scale(.97)}
.btn-primary{background:linear-gradient(135deg,var(--accent-2),var(--accent));color:#fff;box-shadow:0 10px 28px rgba(255,45,85,.35)}
.btn-primary:hover{box-shadow:0 14px 34px rgba(255,45,85,.5)}
.btn-ghost{background:var(--card);border:1px solid var(--card-border);color:var(--text)}
.btn-mini{padding:6px 14px;font-size:14px;border-radius:10px;background:var(--card);border:1px solid var(--card-border);color:var(--text)}

.tool{
  background:var(--card);border:1px solid var(--card-border);border-radius:var(--radius);
  padding:44px;margin-bottom:36px;backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);
  box-shadow:var(--shadow);scroll-margin-top:96px;
}
.tool-head{display:flex;gap:20px;align-items:flex-start;margin-bottom:28px}
.tool-num{
  font-size:15px;font-weight:800;color:#fff;background:linear-gradient(135deg,var(--accent-2),var(--accent));
  border-radius:12px;padding:6px 12px;flex-shrink:0;margin-top:4px;
}
.tool h2{font-size:30px;font-weight:800;letter-spacing:-.01em}
.tool-head p{color:var(--muted);font-size:17px;margin-top:4px}

.field-row{display:flex;gap:12px;flex-wrap:wrap}
input[type=url],input[type=text],input[type=number]{
  flex:1;min-width:220px;padding:15px 18px;font-size:17px;border-radius:14px;
  border:1px solid var(--card-border);background:var(--bg-2);color:var(--text);outline:none;transition:border .2s;
}
input:focus{border-color:var(--accent-2)}
.hint{color:var(--muted);font-size:15px;margin-top:12px}

.thumb-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:20px;margin-top:26px}
.thumb-card{background:var(--bg-2);border:1px solid var(--card-border);border-radius:16px;overflow:hidden}
.thumb-card img{width:100%;display:block;aspect-ratio:16/9;object-fit:cover;background:var(--track)}
.thumb-meta{padding:14px 16px;display:flex;align-items:center;justify-content:space-between;gap:10px}
.thumb-meta strong{font-size:15px}
.thumb-meta span{color:var(--muted);font-size:13px;display:block}
.thumb-actions{display:flex;gap:8px}

.result-label{font-size:18px;margin:26px 0 12px;display:flex;align-items:center;gap:12px}
.idea-list{list-style:none;display:grid;gap:10px}
.idea-list li{
  background:var(--bg-2);border:1px solid var(--card-border);border-radius:14px;
  padding:14px 18px;font-size:17px;font-weight:600;display:flex;justify-content:space-between;align-items:center;gap:12px;
}
.copy-one{flex-shrink:0}
.tag-cloud{display:flex;flex-wrap:wrap;gap:10px}
.tag{
  background:var(--bg-2);border:1px solid var(--card-border);border-radius:999px;
  padding:7px 16px;font-size:15px;font-weight:600;
}

.calc-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:18px;margin-bottom:28px}
.calc-grid label{font-size:15px;font-weight:700;color:var(--muted);display:grid;gap:8px}
.progress-block{display:grid;gap:22px}
.progress-row{display:grid;grid-template-columns:1fr auto;gap:8px 16px;align-items:center}
.progress-info strong{font-size:17px}
.progress-info span{display:block;color:var(--muted);font-size:14px}
.progress-track{grid-column:1/-1;height:14px;background:var(--track);border-radius:999px;overflow:hidden;order:3}
.progress-track.big{height:16px;flex:1;order:0}
.progress-fill{height:100%;width:0%;border-radius:999px;background:linear-gradient(90deg,var(--accent-2),var(--accent));transition:width .6s cubic-bezier(.2,.8,.2,1)}
.progress-fill.alt{background:linear-gradient(90deg,#8a8af5,#5b5bd6)}
.progress-pct{font-weight:800;font-size:18px;justify-self:end}

.audit-score{display:flex;align-items:center;gap:18px;margin-bottom:28px}
.audit-group{margin-bottom:22px}
.audit-group h3{font-size:19px;margin-bottom:10px}
.audit-item{
  display:flex;align-items:center;gap:14px;padding:12px 16px;margin-bottom:8px;cursor:pointer;
  background:var(--bg-2);border:1px solid var(--card-border);border-radius:14px;font-size:16px;user-select:none;
}
.audit-item input{width:20px;height:20px;accent-color:var(--accent);cursor:pointer;flex-shrink:0}
.audit-item.done span{color:var(--muted);text-decoration:line-through}

.site-footer{
  position:relative;z-index:1;text-align:center;padding:52px 5vw 60px;color:var(--muted);
  border-top:1px solid var(--card-border);font-size:16px;
}
.site-footer img{margin-bottom:10px}
.site-footer a{color:var(--accent-2);font-weight:700;text-decoration:none;display:inline-block;margin-top:10px}
.fine{font-size:14px;opacity:.8;margin-top:4px}

@media (max-width:720px){
  body{font-size:17px}
  .main-nav{display:none}
  .tool{padding:28px 22px}
  .tool h2{font-size:25px}
  .hero{padding:64px 0 52px}
  .site-header{gap:14px}
}

/* ---------- v2.1 tools ---------- */
textarea,select{font-family:inherit;color:var(--text);outline:none}
textarea.out,select,input[type=time],.file{
  width:100%;padding:14px 16px;font-size:16px;border-radius:14px;border:1px solid var(--card-border);background:var(--bg-2);transition:border .2s;
}
textarea.out{resize:vertical;line-height:1.55;margin-top:14px;display:block}
textarea:focus,select:focus,input[type=time]:focus{border-color:var(--accent-2)}
select{width:auto;min-width:200px;max-width:100%;cursor:pointer}
input[type=time]{width:auto;color:var(--text)}
.file{flex:1;min-width:220px;color:var(--muted);cursor:pointer}
.file::file-selector-button{margin-right:14px;border:1px solid var(--card-border);background:var(--card);color:var(--text);border-radius:10px;padding:6px 14px;font-weight:700;cursor:pointer}
.muted{color:var(--muted);font-weight:500;font-size:15px}
.result-label.sub{margin-top:38px;padding-top:28px;border-top:1px solid var(--card-border)}
.btn-row{display:flex;gap:10px;flex-wrap:wrap;margin-top:14px}
.btn-mini{cursor:pointer;font-weight:700}
.btn-mini:hover{border-color:var(--accent-2)}
.btn:disabled{opacity:.6;cursor:wait}
.opt-row{display:flex;gap:12px 22px;flex-wrap:wrap;align-items:center;margin-top:16px}
.opt{display:flex;align-items:center;gap:10px;font-size:15px;font-weight:600;color:var(--muted)}
.opt.chk{cursor:pointer}
.opt.chk input{width:18px;height:18px;accent-color:var(--accent)}
.opt select{min-width:0}
.opt input.narrow{flex:none;min-width:0;width:90px;padding:9px 12px;font-size:15px}
.opt input.narrow.wide{width:190px}
.status{margin-top:16px;padding:14px 18px;border-radius:14px;font-size:16px;border:1px solid var(--card-border);background:var(--bg-2)}
.status.err{border-color:rgba(255,45,85,.55)}
.status.ok{border-color:rgba(60,200,120,.55)}
.result-meta{margin-top:24px;display:flex;flex-direction:column;gap:2px}
.result-meta strong,.result-meta a{font-size:20px;color:var(--text);text-decoration:none}
.result-meta a:hover{color:var(--accent-2)}
.result-meta span{color:var(--muted);font-size:15px}
.stat-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(170px,1fr));gap:14px;margin:20px 0}
.stat{background:var(--bg-2);border:1px solid var(--card-border);border-radius:16px;padding:16px 18px}
.stat b{display:block;font-size:24px;letter-spacing:-.01em}
.stat span{color:var(--muted);font-size:14px}
.table-wrap{overflow-x:auto;margin-top:6px;border:1px solid var(--card-border);border-radius:14px;background:var(--bg-2)}
.tbl{width:100%;border-collapse:collapse;font-size:15px;min-width:520px}
.tbl th,.tbl td{padding:11px 14px;text-align:left;border-bottom:1px solid var(--card-border)}
.tbl th{color:var(--muted);font-size:13px;text-transform:uppercase;letter-spacing:.05em}
.tbl tr:last-child td{border-bottom:none}
.tbl a{color:var(--text);text-decoration:none;font-weight:600}
.tbl a:hover{color:var(--accent-2)}
.pill{display:inline-block;font-size:12px;font-weight:800;padding:2px 9px;border-radius:999px;background:rgba(255,45,85,.16);color:var(--accent-2)}
.pill.s{background:rgba(91,91,214,.2);color:#8a8af5}
[data-theme="light"] .pill.s{color:#4a4ac0}
.form-grid{display:grid;gap:18px}
.form-grid.two{grid-template-columns:repeat(auto-fit,minmax(240px,1fr))}
.form-grid label{font-size:15px;font-weight:700;color:var(--muted);display:grid;gap:8px;position:relative}
.form-grid label textarea.out,.form-grid label select{margin-top:0;width:100%}
.count{position:absolute;right:2px;top:0;font-weight:600;font-size:13px}
.score-row{display:flex;align-items:center;gap:22px;margin:26px 0 12px}
.score-ring{--p:0;--c:var(--accent);width:92px;height:92px;border-radius:50%;flex-shrink:0;display:grid;place-items:center;
  background:conic-gradient(var(--c) calc(var(--p)*1%),var(--track) 0)}
.score-ring span{width:72px;height:72px;border-radius:50%;background:var(--bg-2);display:grid;place-items:center;font-weight:850;font-size:26px}
.checks{list-style:none;display:grid;gap:8px;margin-top:10px}
.checks li{display:flex;gap:12px;align-items:flex-start;background:var(--bg-2);border:1px solid var(--card-border);border-radius:14px;padding:11px 16px;font-size:15.5px}
.checks .ic{flex-shrink:0;width:22px;height:22px;border-radius:50%;display:grid;place-items:center;font-size:13px;font-weight:900;color:#fff;margin-top:1px}
.checks .pass .ic{background:#27ae60}.checks .warn .ic{background:#e0961a}.checks .fail .ic{background:var(--accent)}
.checks small{display:block;color:var(--muted);font-size:14px}
.ab-inputs{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.ab-col{display:grid;gap:10px;align-content:start}
.ab-col h3{font-size:18px}
.ab-col input[type=text]{min-width:0}
.seg{display:inline-flex;border:1px solid var(--card-border);border-radius:12px;overflow:hidden}
.seg button{border:none;background:var(--bg-2);color:var(--muted);padding:8px 16px;font-weight:700;font-size:14px;cursor:pointer}
.seg button.on{background:var(--accent);color:#fff}
.ab-stage{--pbg:#0f0f0f;--ptx:#f1f1f1;--pmu:#aaa;margin-top:20px;padding:22px;border-radius:18px;background:var(--pbg);color:var(--ptx);border:1px solid var(--card-border);display:grid;grid-template-columns:1fr 1fr;gap:26px}
.ab-stage[data-surface="light"]{--pbg:#fff;--ptx:#0f0f0f;--pmu:#606060}
.ab-label{grid-column:1/-1;font-weight:800;font-size:14px;letter-spacing:.06em;text-transform:uppercase;color:var(--pmu)}
.ab-variant{display:grid;gap:18px;align-content:start;min-width:0}
.ab-variant h4{font-size:15px;color:var(--accent-2)}
.vc{min-width:0}
.vc .th{position:relative;aspect-ratio:16/9;background:#2a2a2a;border-radius:12px;overflow:hidden}
.vc .th img{width:100%;height:100%;object-fit:cover;display:block}
.vc .th .empty{position:absolute;inset:0;display:grid;place-items:center;color:#888;font-size:13px}
.vc .dur{position:absolute;right:6px;bottom:6px;background:rgba(0,0,0,.8);color:#fff;font-size:12px;font-weight:700;padding:1px 5px;border-radius:4px}
.vc .row{display:flex;gap:10px;margin-top:10px}
.vc .av{width:36px;height:36px;border-radius:50%;background:linear-gradient(135deg,var(--accent-2),var(--accent));flex-shrink:0}
.vc .tt{font-weight:600;font-size:15px;line-height:1.35;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.vc .ch{color:var(--pmu);font-size:13px;margin-top:2px}
.vc.phone{max-width:320px}
.vc.phone .th{border-radius:0}
.vc.side{display:flex;gap:10px;max-width:420px}
.vc.side .th{width:168px;flex-shrink:0;border-radius:8px}
.vc.side .tt{font-size:14px;margin-top:0}
.vc small.lbl{display:block;color:var(--pmu);font-size:12px;margin-bottom:6px;text-transform:uppercase;letter-spacing:.05em;font-weight:700}
.link-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:12px;margin-top:16px}
.link-card{display:block;background:var(--bg-2);border:1px solid var(--card-border);border-radius:14px;padding:14px 16px;color:var(--text);text-decoration:none;transition:border .2s,transform .15s}
.link-card:hover{border-color:var(--accent-2);transform:translateY(-2px)}
.link-card b{display:block;font-size:16px}
.link-card span{color:var(--muted);font-size:13.5px}
@media (max-width:720px){
  .ab-inputs,.ab-stage{grid-template-columns:1fr}
  .stat b{font-size:21px}
  .score-row{flex-direction:column;align-items:flex-start}
}

/* support link */
.btn-support{
  margin-left:0;display:inline-flex;align-items:center;gap:8px;height:44px;padding:0 16px;border-radius:14px;
  border:1px solid var(--card-border);background:var(--card);color:var(--text);text-decoration:none;font-weight:700;font-size:15px;white-space:nowrap;transition:border .2s,transform .15s;
}
.btn-support:hover{border-color:var(--accent-2);transform:translateY(-1px)}
.support-line{margin-top:14px;font-size:15px}
.site-footer .support-line a{margin-top:0;display:inline}
@media (max-width:720px){.main-nav{display:none}.btn-support{margin-left:auto}.btn-support span{display:none}.btn-support{padding:0 14px}}

/* Bio links and subscription links */
[hidden]{display:none!important}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.link-result{display:grid;grid-template-columns:minmax(0,1fr) 180px;gap:24px;margin-top:24px;align-items:start}
.link-output{min-width:0}
.link-output label{display:block;font-size:15px;font-weight:700;color:var(--muted);margin-bottom:8px}
.link-output input{width:100%;min-width:0;font-size:14px}
.break-link{overflow-wrap:anywhere;color:var(--accent-2)}
.qr-wrap{display:grid;justify-items:center;gap:8px}
.qr-wrap canvas{width:180px;height:180px;border-radius:10px;background:#fff;image-rendering:pixelated}
.qr-wrap span{font-size:12px;color:var(--muted)}
.link-notes{margin-top:24px;border-top:1px solid var(--card-border);padding-top:18px;font-size:15px;color:var(--muted)}
.link-notes summary{cursor:pointer;font-weight:700;color:var(--text)}
.link-notes p{margin-top:12px}
:focus-visible{outline:2px solid var(--accent-2);outline-offset:4px}
.open-main{max-width:740px;padding-top:64px}
.open-main .tool h1{font-size:32px;line-height:1.2;margin:14px 0}
.open-main .tool{padding:36px}
.open-main .destination{padding:16px;border:1px solid var(--card-border);border-radius:14px;margin:22px 0;background:var(--bg-2);overflow-wrap:anywhere;font-size:15px}
.open-main .open-actions{display:grid;gap:12px}
.open-main .open-actions .btn{text-align:center}
.open-main .hint a{color:var(--accent-2)}
@media (max-width:1200px) and (min-width:721px){.main-nav{gap:12px}.main-nav a{font-size:14px}.site-header{gap:16px}.brand{font-size:17px}.btn-support span{display:none}}
@media (max-width:960px){.main-nav{display:none}.btn-support{margin-left:auto}}
@media (max-width:560px){
  .link-result{grid-template-columns:1fr}.qr-wrap{justify-self:start}
  .field-row input[type=text]{min-width:0;width:100%}.field-row .btn{width:100%}
  .open-main{padding-top:28px}.open-main .tool{padding:26px 22px}.open-main .tool h1{font-size:27px}
  .brand{font-size:17px;gap:8px}.site-header{gap:10px}.brand img{width:32px;height:32px}.theme-toggle{flex-shrink:0}
}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{transition:none!important}}
.tag{max-width:100%;overflow-wrap:anywhere}
.tool-shortcuts{display:flex;justify-content:center;gap:10px 20px;flex-wrap:wrap;margin-top:24px;font-size:15px}
.tool-shortcuts a{color:var(--accent-2);font-weight:700;text-underline-offset:4px}
[data-theme="light"]{--accent-2:#d92146}
[data-theme="light"] .btn-primary{background:linear-gradient(135deg,#df2447,#c9153b)}

/* ---------- blog links ---------- */
.blog-link{display:none;color:var(--muted);text-decoration:none;font-weight:700;font-size:16px;padding:9px 16px;border-radius:12px;border:1px solid var(--card-border);background:var(--card)}
.blog-link:hover,.blog-link.active{color:var(--text);border-color:var(--accent-2)}
@media (max-width:960px){.blog-link{display:inline-block;margin-left:auto}.btn-support{margin-left:0!important}}
.guide-link{margin-top:18px;padding-top:14px;border-top:1px dashed var(--card-border);font-size:15px;color:var(--muted)}
.guide-link a{color:var(--accent-2);font-weight:700;text-decoration:none}
.guide-link a:hover{text-decoration:underline}