/* Guides (SEO pages, EN): same tokens and type as the landing (landing/index.html),
   in a lean article layout. Loaded by /<guide>/index.html only. */
:root{
  --bg:#FAFAFB; --surface:#FFFFFF; --ink:#1A1A1F; --ink-muted:#6B6B73;
  --primary:#D97540; --primary-soft:#FCE9DC; --border:#EFEFF3; --border-strong:#E0E0E5;
  --bubble-out:#EAF6E4; --bubble-in:#FFFFFF; --chat-bg:#F1EEE8;
}
@media (prefers-color-scheme: dark){
  :root{
    --bg:#0A0A0C; --surface:#141416; --ink:#F5F5F7; --ink-muted:#9A9AA3;
    --primary:#F4A06A; --primary-soft:rgba(244,160,106,.16); --border:#1C1C1E; --border-strong:#2A2A2E;
    --bubble-out:#2B3A2A; --bubble-in:#1C1C1F; --chat-bg:#111113;
  }
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{background:var(--bg);color:var(--ink);font-family:'Inter','Inter Fallback',system-ui,sans-serif;font-feature-settings:'cv11','ss01';line-height:1.6;-webkit-font-smoothing:antialiased;overflow-x:hidden}
a{color:var(--primary);text-decoration:none}
a:hover{opacity:.72}
.serif{font-family:'Instrument Serif',Georgia,serif;font-weight:400;letter-spacing:-.02em}
.it{font-style:italic}
.wrap{max-width:1080px;margin:0 auto;padding:0 40px}
.narrow{max-width:720px}
.wordmark{font-family:'Instrument Serif',serif;font-size:26px;letter-spacing:-.02em;color:var(--ink);line-height:1}
.wordmark .it{color:var(--primary)}
.kicker{font-family:'JetBrains Mono',monospace;font-weight:500;font-size:11px;text-transform:uppercase;letter-spacing:.18em;color:var(--ink-muted)}
.kicker b{color:var(--primary);font-weight:500}

/* Buttons — identical to the landing */
.btn{display:inline-flex;align-items:center;gap:.6em;font-family:'Inter','Inter Fallback',sans-serif;font-weight:600;font-size:15px;padding:14px 26px;cursor:pointer;border:1px solid transparent;transition:transform .2s ease;white-space:nowrap;border-radius:2px}
.btn-primary{background:var(--ink);color:var(--bg)}
.btn-accent{background:var(--primary);color:#fff}
.btn:hover{opacity:1;transform:translateY(-2px)}
.btn .ar{transition:transform .2s ease}
.btn:hover .ar{transform:translateX(3px)}

/* Header */
header{position:sticky;top:0;z-index:60;background:color-mix(in srgb,var(--bg) 88%,transparent);backdrop-filter:blur(14px);border-bottom:1px solid var(--border)}
header .bar{display:flex;align-items:center;justify-content:space-between;gap:16px;max-width:1080px;margin:0 auto;padding:14px 40px}
header nav{display:flex;align-items:center;gap:26px}
header nav .lnk{font-size:13px;color:var(--ink-muted)}
header nav .lnk:hover{color:var(--ink);opacity:1}
header .btn{padding:10px 18px;font-size:14px}

/* Breadcrumbs */
.crumbs{font-size:13px;color:var(--ink-muted);padding-top:36px}
.crumbs a{color:var(--ink-muted)}
.crumbs a:hover{color:var(--ink);opacity:1}
.crumbs span{margin:0 8px;opacity:.6}

/* Hero */
.hero{display:grid;grid-template-columns:1.15fr .85fr;gap:56px;align-items:center;padding:28px 0 72px}
.hero h1{font-family:'Instrument Serif',Georgia,serif;font-weight:400;font-size:clamp(40px,5.4vw,66px);line-height:1.02;letter-spacing:-.025em;margin:18px 0 22px}
.hero h1 .it{color:var(--primary)}
.lede{font-size:18px;color:var(--ink-muted);max-width:560px}
.cta-row{display:flex;align-items:center;gap:18px;flex-wrap:wrap;margin-top:30px}
.cta-note{font-size:13px;color:var(--ink-muted)}

/* Chat mock */
.chat{background:var(--chat-bg);border:1px solid var(--border-strong);border-radius:22px;padding:18px 16px 20px;box-shadow:0 30px 60px -36px rgba(10,10,12,.35);font-size:14px;line-height:1.45}
.chat-head{display:flex;align-items:center;gap:10px;padding:0 4px 14px;border-bottom:1px solid var(--border);margin-bottom:14px}
.chat-av{width:30px;height:30px;border-radius:50%;background:var(--primary);color:#fff;display:grid;place-items:center;font-size:14px}
.chat-nm{font-weight:600;font-size:14px}
.chat-st{font-size:12px;color:var(--ink-muted)}
.msg{max-width:86%;padding:9px 12px;border-radius:14px;margin:8px 0;box-shadow:0 1px 0 rgba(10,10,12,.05)}
.msg.out{margin-left:auto;background:var(--bubble-out);border-bottom-right-radius:4px}
.msg.in{background:var(--bubble-in);border-bottom-left-radius:4px}
.msg .sub{display:block;font-size:12px;color:var(--ink-muted);margin-top:3px}
.msg .amt{font-weight:600;font-variant-numeric:tabular-nums}
.msg.voice{display:flex;align-items:center;gap:10px}
.wave{display:flex;align-items:center;gap:2px;height:20px}
.wave i{display:block;width:3px;border-radius:2px;background:var(--primary);opacity:.8}

/* Article body */
.body{padding:8px 0 40px}
.body section{padding:48px 0;border-top:1px dashed var(--border-strong)}
.body h2{font-family:'Instrument Serif',Georgia,serif;font-weight:400;font-size:clamp(30px,3.6vw,42px);line-height:1.08;letter-spacing:-.02em;margin-bottom:18px}
.body h3{font-size:17px;font-weight:600;margin-bottom:6px}
.body p{font-size:17px;margin-bottom:14px}
.body p.muted,.muted{color:var(--ink-muted)}
.body ul.ticks{list-style:none;margin:6px 0 14px}
.body ul.ticks li{position:relative;padding-left:26px;margin:8px 0;font-size:17px}
.body ul.ticks li::before{content:'+';position:absolute;left:4px;top:0;color:var(--primary);font-family:'JetBrains Mono',monospace}
code{font-family:'JetBrains Mono',monospace;font-size:.88em;background:var(--primary-soft);padding:2px 6px;border-radius:4px;color:var(--ink)}

.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:0;margin-top:10px;border:1px solid var(--border-strong)}
.step{padding:26px 24px;border-right:1px dashed var(--border-strong)}
.step:last-child{border-right:none}
.step .n{font-family:'JetBrains Mono',monospace;font-size:11px;letter-spacing:.18em;color:var(--primary);display:block;margin-bottom:12px}
.step p{font-size:15px;color:var(--ink-muted);margin:0}

.grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px;margin-top:8px}
.card{background:var(--surface);border:1px solid var(--border);border-radius:14px;padding:20px 22px}
.card p{font-size:15px;color:var(--ink-muted);margin:0}

table.cmp{width:100%;border-collapse:collapse;margin-top:10px;font-size:15px}
table.cmp th,table.cmp td{text-align:left;padding:13px 12px;border-bottom:1px solid var(--border-strong);vertical-align:top}
table.cmp th{font-family:'JetBrains Mono',monospace;font-weight:500;font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--ink-muted)}
table.cmp td:first-child{color:var(--ink-muted)}
.tw{overflow-x:auto}

.faq details{border-bottom:1px solid var(--border-strong);padding:18px 0}
.faq summary{cursor:pointer;list-style:none;font-weight:600;font-size:17px;display:flex;justify-content:space-between;gap:16px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:'+';font-family:'JetBrains Mono',monospace;color:var(--primary);transition:transform .2s ease}
.faq details[open] summary::after{transform:rotate(45deg)}
.faq details p{margin:12px 0 0;color:var(--ink-muted);font-size:16px}

.related{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:8px}
.related a{display:block;background:var(--surface);border:1px solid var(--border);border-radius:14px;padding:18px 20px;color:var(--ink)}
.related a:hover{opacity:1;border-color:var(--primary)}
.related .t{font-weight:600;display:block;margin-bottom:4px}
.related .d{font-size:14px;color:var(--ink-muted)}

.final{background:var(--ink);color:var(--bg);border-radius:20px;padding:56px 48px;margin:24px 0 72px;display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap}
.final h2{font-family:'Instrument Serif',Georgia,serif;font-weight:400;font-size:clamp(30px,3.4vw,44px);line-height:1.05;letter-spacing:-.02em;max-width:560px}
.final .btn-accent{background:var(--primary)}
.final .cta-note{color:color-mix(in srgb,var(--bg) 70%,transparent);margin-top:10px}

footer{border-top:1px solid var(--border-strong);padding:40px 0 56px}
footer .row{display:flex;justify-content:space-between;gap:28px;flex-wrap:wrap;align-items:flex-start}
footer nav{display:flex;gap:28px 56px;flex-wrap:wrap;align-items:flex-start}
footer .fcol{display:flex;flex-direction:column;align-items:flex-start;gap:12px}
footer .fcol .fh{font-family:'JetBrains Mono',monospace;font-weight:500;font-size:10px;letter-spacing:.18em;text-transform:uppercase;color:var(--ink-muted);opacity:.7;margin-bottom:4px}
footer nav a{color:var(--ink-muted);font-size:13px}
footer nav a:hover{color:var(--ink);opacity:1}
footer .meta{font-family:'JetBrains Mono',monospace;font-size:10px;letter-spacing:.14em;text-transform:uppercase;color:var(--ink-muted);margin-top:14px}

@media (max-width:900px){
  .wrap{padding:0 22px}
  header .bar{padding:12px 22px}
  header nav .lnk{display:none}
  .hero{grid-template-columns:1fr;gap:34px;padding-bottom:48px}
  .steps{grid-template-columns:1fr}
  .step{border-right:none;border-bottom:1px dashed var(--border-strong)}
  .step:last-child{border-bottom:none}
  .grid,.related{grid-template-columns:1fr}
  .final{padding:40px 26px}
}
@media (max-width:380px){header .btn .ar{display:none}}
@media (prefers-reduced-motion: reduce){*{transition:none!important;scroll-behavior:auto!important}}