:root{--bg:#FFFBEB;--fg:#0F172A;--card:#fff;--muted:#F3F4F6;--muted-fg:#334155;--border:#E5E7EB;--accent:#D97706;--link:#9A3412;--hw:#0F766E;--on-accent:#000;--ring:#57534E;--max:960px;--safe-t:env(safe-area-inset-top,0px);--safe-b:env(safe-area-inset-bottom,0px)}
*{box-sizing:border-box}html{scroll-behavior:smooth}
body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;background:var(--bg);color:var(--fg);line-height:1.7;font-size:16px;-webkit-font-smoothing:antialiased;padding-bottom:calc(40px + var(--safe-b))}
a{color:var(--link)}a:focus-visible,button:focus-visible,input:focus-visible,.tab:focus-visible{outline:2px solid var(--ring);outline-offset:2px}
.wrap{width:min(100% - 32px,var(--max));margin-inline:auto}
.skip{position:absolute;left:-999px;top:0;background:#000;color:#fff;padding:8px 12px;z-index:99}.skip:focus{left:12px;top:12px}
header.site{position:sticky;top:0;z-index:30;background:rgba(255,251,235,.94);backdrop-filter:blur(10px);border-bottom:1px solid var(--border);padding:calc(10px + var(--safe-t)) 0 10px}
.nav{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:inherit;font-weight:700;min-height:44px}
.mark{width:34px;height:34px;border-radius:10px;background:var(--fg);color:var(--bg);display:grid;place-items:center;font-size:13px;font-weight:700}
.brand .ai{color:var(--link)}
.nav a.navlink{color:var(--muted-fg);text-decoration:none;font-size:14px;padding:8px 10px;border-radius:999px;min-height:44px;display:inline-flex;align-items:center}
.nav a.navlink:hover{background:rgba(15,23,42,.05);color:var(--fg)}
.hero{padding:40px 0 24px}
.chip{display:inline-flex;font-weight:700;background:var(--card);border:1px solid var(--border);padding:6px 12px;border-radius:999px;margin-bottom:14px}
.chip .ai{color:var(--link)}
h1{margin:0 0 12px;font-size:clamp(1.65rem,5.8vw,2.35rem);line-height:1.28;letter-spacing:-.02em}
.lead{margin:0 0 20px;color:var(--muted-fg);max-width:42rem}
.search-box{display:flex;gap:8px;flex-wrap:wrap;align-items:stretch;background:var(--card);border:1px solid var(--border);border-radius:14px;padding:8px}
.search-box input{flex:1;min-width:200px;border:0;background:transparent;font:inherit;padding:10px 12px;min-height:44px;color:var(--fg)}.search-box input::placeholder{color:#475569;opacity:1}
.btn{border:0;cursor:pointer;font:inherit;font-weight:700;border-radius:10px;min-height:44px;padding:10px 14px;display:inline-flex;align-items:center;justify-content:center;transition:background .2s ease,transform .15s ease}
.btn:active{transform:scale(.98)}.btn-primary{background:var(--accent);color:var(--on-accent)}.btn-primary:hover{background:#b45309}
.btn-hw{background:var(--hw);color:#fff}.btn-hw:hover{background:#0d9488}
.btn-ghost{background:var(--muted);color:var(--fg);border:1px solid var(--border)}.btn-ghost:hover{background:#ececec}.btn.copied{background:#166534;color:#fff}
.card{background:var(--card);border:1px solid var(--border);border-radius:14px;padding:14px 16px}.card h3,.card-title{margin:0 0 6px;font-size:1.05rem;font-weight:700}.card-title{color:var(--fg)}
section{padding:32px 0}h2{margin:0 0 8px;font-size:clamp(1.25rem,4vw,1.55rem);letter-spacing:-.02em}.hero-sub{margin:22px 0 12px;font-size:clamp(1.15rem,3.5vw,1.35rem)}.sub{color:var(--muted-fg);margin:0 0 16px}
.grid2{display:grid;gap:12px}.grid3{display:grid;gap:10px}
.tag{display:inline-block;font-size:12px;font-weight:700;letter-spacing:.04em;padding:3px 8px;border-radius:999px;margin-bottom:8px}
.tag-shuo{background:#FEF3C7;color:#92400E}.tag-hw{background:#CCFBF1;color:#115E59}.tag-combo{background:#E2E8F0;color:#334155}
.compare-table{overflow:auto;border:1px solid var(--border);border-radius:14px;background:var(--card)}
.compare-table table{width:100%;border-collapse:collapse;min-width:560px;font-size:14px}
.compare-table th,.compare-table td{padding:12px 14px;border-bottom:1px solid var(--border);text-align:left;vertical-align:top}
.compare-table th{background:var(--muted);color:var(--muted-fg);font-weight:600}
.compare-table tr:last-child td{border-bottom:0}
.prompt-grid{display:grid;gap:12px}
.prompt-card{background:var(--card);border:1px solid var(--border);border-radius:14px;padding:14px}
.prompt-card .top{display:flex;justify-content:space-between;gap:10px;align-items:flex-start;flex-wrap:wrap}
.prompt-card .hint{color:var(--muted-fg);font-size:13px;margin:0 0 8px}
.prompt-card pre{margin:0;white-space:pre-wrap;word-break:break-word;font-size:13px;line-height:1.55;background:#0F172A;color:#E2E8F0;border-radius:10px;padding:12px;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace}
.family-tabs,.tabs{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:12px}
.tab,.ftab{border:1px solid var(--border);background:var(--card);color:var(--muted-fg);border-radius:999px;padding:8px 14px;min-height:44px;cursor:pointer;font:inherit;font-weight:600}
.tab[aria-selected="true"],.ftab[aria-selected="true"]{background:var(--fg);color:var(--bg);border-color:var(--fg)}
.doc-toolbar{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:12px;align-items:center}
.doc-meta{color:var(--muted-fg);font-size:14px;flex:1;min-width:160px}
.doc-view{background:var(--card);border:1px solid var(--border);border-radius:14px;padding:18px 16px;max-height:min(70vh,720px);overflow:auto;-webkit-overflow-scrolling:touch}
.doc-view.hit mark{background:#FDE68A;padding:0 .1em;border-radius:2px}
.doc-view h2{font-size:1.3rem;margin-top:0;text-align:left}.doc-view h3{font-size:1.12rem;margin-top:1.15em}.doc-view h4,.doc-view h5{font-size:1.02rem;margin-top:1em}.doc-view h3,.doc-view h4{font-size:1.02rem;margin-top:1em}
.doc-view p{margin:.55em 0}.doc-view ul,.doc-view ol{margin:.45em 0;padding-left:1.2em}
.doc-view blockquote{margin:.8em 0;padding:.55em .85em;border-left:3px solid var(--link);background:var(--muted);color:var(--muted-fg)}
.doc-view code{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:.88em;background:var(--muted);padding:.1em .35em;border-radius:4px}
.doc-view .md-code{background:#0F172A;color:#E2E8F0;padding:12px;border-radius:10px;overflow:auto}.doc-view .md-code code{background:transparent;color:inherit;padding:0}
.doc-view .table-wrap{overflow:auto;margin:1em 0}.doc-view table{border-collapse:collapse;width:100%;min-width:480px;font-size:14px}
.doc-view th,.doc-view td{border:1px solid var(--border);padding:8px 10px;vertical-align:top}.doc-view th{background:var(--muted)}
.doc-view .md-link{color:var(--link);text-decoration:underline;text-decoration-style:dotted;cursor:help}


.faq details{background:var(--card);border:1px solid var(--border);border-radius:14px;padding:12px 14px;margin-bottom:10px}
.faq summary{cursor:pointer;font-weight:600;list-style:none;min-height:44px;display:flex;align-items:center}.faq summary::-webkit-details-marker{display:none}
.faq details[open] summary{margin-bottom:8px}.faq p{margin:0;color:var(--muted-fg)}
#search-status{font-size:13px;color:var(--muted-fg);margin-top:8px;min-height:1.2em}
footer{border-top:1px solid var(--border);margin-top:20px;padding:24px 0 calc(12px + var(--safe-b));text-align:center;color:var(--muted-fg);font-size:14px}
footer .name{color:var(--fg);font-weight:700}footer .ai{color:var(--link)}
@media(min-width:720px){.grid2{grid-template-columns:1fr 1fr}.grid3{grid-template-columns:1fr 1fr 1fr}.prompt-grid{grid-template-columns:1fr 1fr}.hero{padding:52px 0 28px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}.btn{transition:none}}

/* Shared subpage extras */
.page-hero{padding:36px 0 12px}
.page-hero .lead{margin-bottom:16px}
.prose{max-width:42rem}
.prose p{margin:0 0 14px;color:var(--muted-fg)}
.prose ul,.prose ol{margin:0 0 16px;padding-left:1.25em;color:var(--muted-fg)}
.prose li{margin:6px 0}
.prose strong{color:var(--fg)}
.cta-row{display:flex;flex-wrap:wrap;gap:8px;margin:16px 0}
.related{margin-top:8px}
.related ul{list-style:none;padding:0;margin:0;display:grid;gap:8px}
.related a{display:block;background:var(--card);border:1px solid var(--border);border-radius:12px;padding:12px 14px;text-decoration:none;color:var(--link);font-weight:600}
.related a:hover{background:rgba(154,52,18,.06)}
.related a span{display:block;font-weight:400;color:var(--muted-fg);font-size:13px;margin-top:4px}
footer .links{display:flex;flex-wrap:wrap;gap:8px 14px;justify-content:center;margin:12px 0 0;padding:0;list-style:none}
footer .links a{color:var(--link);text-decoration:none;font-weight:600}
footer .links a:hover{text-decoration:underline}
.example{background:var(--card);border:1px solid var(--border);border-radius:14px;padding:14px 16px;margin:12px 0}
.example h3{margin:0 0 8px;font-size:1.02rem}
.note{font-size:14px;color:var(--muted-fg);margin:8px 0 0}
.breadcrumb{font-size:13px;color:var(--muted-fg);margin:0 0 12px}
.breadcrumb a{color:var(--link);text-decoration:none}
.steps{counter-reset:step;list-style:none;padding:0;margin:0 0 16px}
.steps li{position:relative;padding:12px 14px 12px 52px;background:var(--card);border:1px solid var(--border);border-radius:14px;margin-bottom:10px;color:var(--muted-fg)}
.steps li::before{counter-increment:step;content:counter(step);position:absolute;left:14px;top:12px;width:28px;height:28px;border-radius:999px;background:var(--fg);color:var(--bg);display:grid;place-items:center;font-weight:700;font-size:13px}
.steps li strong{color:var(--fg);display:block;margin-bottom:4px}

/* Batch-2 guide extras */
.checklist{list-style:none;padding:0;margin:0 0 16px}
.checklist li{display:flex;gap:10px;align-items:flex-start;background:var(--card);border:1px solid var(--border);border-radius:12px;padding:10px 12px;margin-bottom:8px;color:var(--muted-fg)}
.checklist input[type=checkbox]{width:18px;height:18px;margin-top:3px;flex-shrink:0;accent-color:var(--link)}
.example-badge{display:inline-block;font-size:12px;font-weight:700;letter-spacing:.04em;padding:3px 8px;border-radius:999px;background:#FEF3C7;color:#92400E;margin-bottom:8px}
.ba-grid{display:grid;gap:10px;margin:10px 0}
.ba-block{background:var(--muted);border-radius:10px;padding:12px;color:var(--muted-fg);font-size:14px}
.ba-block strong{display:block;color:var(--fg);margin-bottom:4px;font-size:13px}
.ba-block.after{background:#ECFDF5}
.guide-list{display:grid;gap:8px;margin:12px 0 0;padding:0;list-style:none}
.guide-list a{color:var(--link);font-weight:600;text-decoration:none}
.guide-list a:hover{text-decoration:underline}
.guide-list span{display:block;font-weight:400;color:var(--muted-fg);font-size:13px;margin-top:2px}

/* Conversion P0: try / diagnose / callout */
.callout{background:var(--card);border:1px solid var(--border);border-left:4px solid var(--accent);border-radius:12px;padding:14px 16px;margin:12px 0;color:var(--muted-fg)}
.callout strong{color:var(--fg)}
.paid-hook{background:var(--card);border:1px dashed var(--border);border-radius:12px;padding:12px 14px}
.diagnose-list{display:grid;gap:8px;margin-top:8px}
.diagnose-item{background:var(--card);border:1px solid var(--border);border-radius:14px;padding:10px 14px}
.diagnose-item summary{cursor:pointer;font-weight:600;min-height:44px;display:flex;align-items:center;list-style:none}
.diagnose-item summary::-webkit-details-marker{display:none}
.diagnose-item[open] summary{margin-bottom:8px;color:var(--fg)}
.diagnose-item p{margin:0 0 10px;color:var(--muted-fg)}
.next-step{font-weight:600}
@media(min-width:720px){
  .try-ba{grid-template-columns:1fr 1fr}
  .client-cols{grid-template-columns:1fr 1fr 1fr}
}