.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}
button{font-family:inherit}
.inline-mono{font-family:var(--mono);color:var(--ink)}

.hero-share{display:flex;gap:8px;justify-content:center;margin-top:24px}
.hero-share a{
  width:38px;height:38px;border-radius:9px;border:1px solid var(--line-2);
  background:var(--panel);display:grid;place-items:center;color:var(--ink-2);
  transition:color .15s,background .15s,border-color .15s,transform .08s
}
.hero-share a:hover{background:var(--ink);color:var(--bg);border-color:var(--ink)}
.hero-share a:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.hero-share a:active{transform:translateY(1px)}
.hero-share svg{width:16px;height:16px}

.editor-wrap{max-width:1200px;margin:28px auto 0;padding:0 24px}
.editor{
  background:var(--panel);border:1px solid var(--line-2);border-radius:14px;
  box-shadow:var(--shadow-md);overflow:hidden;
}
.editor-head{
  display:flex;align-items:center;gap:10px;
  padding:10px 14px;border-bottom:1px solid var(--line);
  background:linear-gradient(180deg,#fcfcf8,var(--panel));
}
.dots{display:flex;gap:6px;margin-right:4px}
.dots i{width:10px;height:10px;border-radius:50%;display:block;background:var(--line-2)}
.dots i:nth-child(1){background:#e87a7a}
.dots i:nth-child(2){background:#e9c35b}
.dots i:nth-child(3){background:#86c47a}
.file-tab{
  font-family:var(--mono);font-size:12.5px;color:var(--ink-2);
  padding:6px 10px;border:1px solid var(--line);border-radius:6px;background:var(--bg);
  display:inline-flex;align-items:center;gap:8px;
}
.file-tab .ext{color:var(--muted)}
.lang-pills{display:flex;gap:4px;margin-left:auto;padding:3px;background:var(--bg-2);border-radius:8px;border:1px solid var(--line)}
.lang-pills button{
  font-family:var(--mono);font-size:11.5px;color:#4b525c;
  border:0;background:transparent;padding:5px 10px;border-radius:5px;cursor:pointer;letter-spacing:.02em;
}
.lang-pills button.on{background:var(--panel);color:var(--ink);box-shadow:var(--shadow-sm)}
.lang-pills button:focus-visible{outline:2px solid var(--accent);outline-offset:2px}

.editor-body{display:block;min-height:280px}
#textarea{
  display:block;width:100%;border:0;outline:0;resize:vertical;
  font-family:var(--mono);font-size:13.5px;line-height:1.7;
  color:var(--ink);padding:16px 18px;background:var(--panel);
  min-height:280px;max-height:1000px;overflow:auto;tab-size:2;
  white-space:pre;word-wrap:normal;overflow-wrap:normal;
}
#textarea::placeholder{color:var(--muted)}
.editor-foot{
  display:flex;align-items:center;gap:8px;flex-wrap:wrap;
  padding:10px 12px;border-top:1px solid var(--line);background:#fbfbf6;
}
.status{
  font-family:var(--mono);font-size:12px;color:var(--muted);
  display:flex;align-items:center;gap:14px;margin-right:auto;padding-left:4px;flex-wrap:wrap;
}
.status span b{color:var(--ink-2);font-weight:500}
.actions{display:flex;gap:6px;flex-wrap:wrap}

.btn{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13.5px;font-weight:500;letter-spacing:-.005em;
  padding:9px 14px;border-radius:8px;border:1px solid var(--line-2);
  background:var(--panel);color:var(--ink-2);cursor:pointer;
  transition:transform .08s ease,background .15s,border-color .15s,color .15s;
}
.btn:hover{background:var(--bg-2);color:var(--ink);border-color:var(--ink-2)}
.btn:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.btn:active{transform:translateY(1px)}
.btn[disabled]{opacity:.55;cursor:not-allowed}
.btn .kbd{
  font-family:var(--mono);font-size:10.5px;color:var(--muted);
  border:1px solid var(--line);border-bottom-width:2px;border-radius:4px;
  padding:1px 5px;background:var(--bg);
}
.btn-primary{
  background:var(--ink);color:var(--bg);border-color:var(--ink);
  box-shadow:0 1px 0 rgba(255,255,255,.08) inset,0 1px 2px rgba(13,15,18,.2);
}
.btn-primary:hover{background:#1f232a;color:var(--bg);border-color:#1f232a}
.btn-primary .kbd{color:#cfd2d8;border-color:#2a2e36;background:#1a1d23}

.icn{width:14px;height:14px;flex:none;display:block}

.ad-slot{max-width:1200px;margin:56px auto;padding:0 24px}
.ad-box{
  border:1px dashed var(--line-2);border-radius:12px;background:var(--panel);
  min-height:100px;display:grid;place-items:center;position:relative;
  color:var(--muted);font-family:var(--mono);font-size:11px;letter-spacing:.12em;
  text-transform:uppercase;
}
.ad-box::before{
  content:"ad";position:absolute;top:8px;left:10px;
  font-family:var(--mono);font-size:10px;color:var(--muted);
  padding:1px 6px;border:1px solid var(--line);border-radius:4px;background:var(--bg);
  letter-spacing:0;
}

section.section{max-width:1200px;margin:0 auto;padding:72px 24px 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:28px;flex-wrap:wrap}
.section-title{font-size:clamp(26px,3vw,36px);line-height:1.1;letter-spacing:-.025em;font-weight:600;margin:0;max-width:22ch}
.section-kicker{font-family:var(--mono);font-size:11.5px;color:var(--muted);letter-spacing:.14em;text-transform:uppercase;margin:0 0 10px}
.section-sub{color:var(--ink-2);max-width:46ch;font-size:15px;line-height:1.55;margin:0}

.feat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.feat{
  background:var(--panel);border:1px solid var(--line);border-radius:12px;
  padding:22px;position:relative;overflow:hidden;
  transition:border-color .15s,transform .2s,box-shadow .2s;
}
.feat:hover{border-color:var(--line-2);transform:translateY(-1px);box-shadow:var(--shadow-md)}
.feat .num{
  font-family:var(--mono);font-size:11px;color:var(--muted);
  position:absolute;top:14px;right:16px;
}
.feat .ico{
  width:56px;height:56px;border-radius:9px;background:var(--accent-wash);
  border:1px solid color-mix(in oklch,var(--accent) 25%,var(--line));
  display:grid;place-items:center;color:var(--accent-ink);margin-bottom:14px;
}
.feat h3{font-size:16px;margin:0 0 8px;font-weight:600;letter-spacing:-.01em}
.feat p{font-size:13.5px;color:var(--ink-2);line-height:1.55;margin:0}
.feat code{font-family:var(--mono);font-size:.9em;background:var(--code-bg);padding:1px 5px;border-radius:4px;border:1px solid var(--line)}

.guide-head{text-align:center;max-width:720px;margin:0 auto 36px}
.guide-head .section-title{margin:0 auto 12px}
.guide-head .section-sub{margin:0 auto;max-width:58ch}

.steps{
  display:grid;grid-template-columns:repeat(3,1fr);gap:0;
  border:1px solid var(--line-2);border-radius:14px;overflow:hidden;
  background:var(--panel);box-shadow:var(--shadow-sm);
  position:relative;
}
.steps::before{
  content:"";position:absolute;left:24px;right:24px;top:100px;height:1px;
  background:linear-gradient(90deg,transparent,var(--line-2) 10%,var(--line-2) 90%,transparent);
  z-index:0;
}
.step{padding:28px 28px 30px;position:relative;border-right:1px solid var(--line)}
.step:last-child{border-right:0}
.step .n{
  width:52px;height:52px;border-radius:50%;
  background:var(--bg);border:1px solid var(--line-2);
  display:grid;place-items:center;position:relative;z-index:1;
  font-family:var(--mono);font-size:17px;font-weight:700;color:var(--ink);
  margin-bottom:28px;letter-spacing:-0.01em;
}
.step h3{font-size:16px;margin:0 0 8px;margin-top:40px;font-weight:600;letter-spacing:-0.01em;line-height:1.3}
.step p{font-size:13.5px;color:var(--ink-2);line-height:1.6;margin:0}

.guide-row{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin:40px auto 0}
.guide-prose{padding:26px 28px;background:var(--bg-2);border:1px solid var(--line);border-radius:14px}
.guide-prose h3{font-size:18px;letter-spacing:-0.015em;color:var(--ink);margin:0 0 10px;font-weight:600;line-height:1.3}
.guide-prose p{margin:0 0 10px;color:var(--ink-2);font-size:14.5px;line-height:1.65}
.guide-prose p:last-child{margin-bottom:0}
.guide-prose b{color:var(--ink);font-weight:600}

.faq-head{text-align:center;max-width:720px;margin:0 auto 28px}
.faq-head .section-kicker{justify-content:center}
.faq-head .section-title{margin:0 auto 14px}
.faq-head .section-sub{margin:0 auto;max-width:56ch}
.faq-card{
  max-width:840px;margin:0 auto;
  background:var(--panel);border:1px solid var(--line-2);border-radius:16px;
  box-shadow:var(--shadow-md);
  padding:8px 28px;
}
.faq-list{display:flex;flex-direction:column}
details{border-bottom:1px solid var(--line);padding:28px 4px}
details:last-child{border-bottom:0}
details summary{
  cursor:pointer;list-style:none;
  display:flex;align-items:flex-start;gap:16px;
  font-size:18px;font-weight:500;color:var(--ink);letter-spacing:-.015em;line-height:1.35;
}
details summary::-webkit-details-marker{display:none}
details summary::before{
  content:"+";font-family:var(--mono);font-size:20px;color:var(--muted);
  transition:transform .2s;line-height:1;margin-top:4px;flex:none;
}
details[open] summary::before{content:"−";color:var(--accent)}
details summary:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px}
details p{margin:16px 32px 6px 32px;color:var(--ink-2);font-size:15px;line-height:1.65}
details code{font-family:var(--mono);font-size:.92em;background:var(--code-bg);padding:1px 5px;border-radius:4px;border:1px solid var(--line)}

footer{
  margin-top:80px;border-top:1px solid var(--line);
  background:linear-gradient(180deg,transparent,var(--bg-2));
}
.foot-inner{max-width:1200px;margin:0 auto;padding:40px 24px 36px;text-align:center}
.foot-partners{
  display:flex;justify-content:center;gap:28px;flex-wrap:wrap;
  font-size:14px;color:var(--ink-2);
}
.foot-partners a{
  display:inline-flex;align-items:center;gap:6px;
  padding-bottom:2px;border-bottom:1px solid transparent;transition:border-color .15s,color .15s;
}
.foot-partners a:hover{color:var(--ink);border-bottom-color:var(--ink)}
.foot-partners a::after{content:"↗";font-family:var(--mono);font-size:11px;color:var(--muted)}
.foot-copy{
  margin-top:14px;font-family:var(--mono);font-size:12px;color:var(--muted);
  display:flex;justify-content:center;gap:8px;flex-wrap:wrap;
}
.foot-copy a:hover{color:var(--ink)}
.foot-copy .sep{opacity:.5}

@media (max-width:900px){
  .feat-grid{grid-template-columns:1fr 1fr}
  details{padding:24px 4px}
  details summary{font-size:16.5px}
  .steps{grid-template-columns:1fr}
  .steps::before{display:none}
  .step{border-right:0;border-bottom:1px solid var(--line)}
  .step:last-child{border-bottom:0}
  .guide-row{grid-template-columns:1fr;gap:12px}
  .guide-prose{padding:22px}
}
@media (max-width:620px){
  .editor-wrap,.ad-slot,section.section,.foot-inner{padding-left:18px;padding-right:18px}
  .feat-grid{grid-template-columns:1fr}
  #textarea{padding:14px 12px;font-size:13px;max-height:600px}
  .lang-pills{display:none}
  .btn{padding:8px 12px;font-size:13px}
}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}
}