:root{
  --paper:#faf7f1;
  --paper-2:#f3eee4;
  --ink:#26203a;
  --ink-soft:#5d5675;
  --accent:#5d4fd3;
  --accent-deep:#463aa8;
  --accent-soft:#eceafb;
  --coral:#e5673f;
  --coral-soft:#fdeee7;
  --green:#3d8f5f;
  --green-soft:#e7f4ec;
  --line:#e2dccd;
  --code-bg:#2a2440;
  --code-ink:#e8e4f8;
  --radius:18px;
  font-size:16px;
}
body.codex{
  --accent:#0e8a72;
  --accent-deep:#0a6b58;
  --accent-soft:#e2f3ee;
  --code-bg:#1f3833;
  --code-ink:#dff0ea;
}
body.consul{
  --accent:#2f6bd8;
  --accent-deep:#2453ad;
  --accent-soft:#e8eefc;
  --code-bg:#1e2a44;
  --code-ink:#e3ebfb;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:84px}
body{
  font-family:'Zen Kaku Gothic New',sans-serif;
  background:var(--paper);
  color:var(--ink);
  line-height:1.9;
  background-image:radial-gradient(var(--line) 1px, transparent 1px);
  background-size:28px 28px;
}
h1,h2,h3,.step-num{font-family:'Zen Kaku Gothic New',sans-serif}
code,pre,.mono{font-family:'DM Mono',monospace}

/* ---- header ---- */
.topbar{
  position:sticky;top:0;z-index:50;
  background:rgba(250,247,241,.92);backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
}
.topbar-in{max-width:920px;margin:0 auto;padding:14px 20px;display:flex;align-items:center;gap:12px;flex-wrap:wrap}
.logo{font-family:'Zen Kaku Gothic New',sans-serif;font-weight:900;font-size:1rem;letter-spacing:.02em;text-decoration:none;color:var(--ink)}
.logo .brain{color:var(--accent)}
.topnav{display:flex;gap:4px;margin-left:auto;flex-wrap:wrap}
.topnav a{
  font-size:.78rem;color:var(--ink-soft);text-decoration:none;
  padding:5px 10px;border-radius:999px;font-weight:500;
}
.topnav a:hover,.topnav a.active{background:var(--accent-soft);color:var(--accent-deep)}

/* ---- hero ---- */
.hero{max-width:920px;margin:0 auto;padding:72px 20px 40px;position:relative}
.hero-badge{
  display:inline-block;background:var(--ink);color:var(--paper);
  font-size:.75rem;font-weight:700;letter-spacing:.14em;
  padding:6px 16px;border-radius:999px;margin-bottom:22px;
}
.hero-badge.accent{background:var(--accent)}
.hero h1{
  font-size:clamp(1.9rem,5.4vw,3.2rem);font-weight:900;line-height:1.35;
  letter-spacing:.01em;
}
.hero h1 .hl{
  color:var(--accent);
  text-decoration:underline;
  text-decoration-color:color-mix(in srgb, var(--accent) 25%, transparent);
  text-decoration-thickness:10px;
  text-underline-offset:4px;
}
.hero p.lead{margin-top:22px;font-size:1.02rem;color:var(--ink-soft);max-width:640px}
.hero .meta{margin-top:26px;display:flex;gap:10px;flex-wrap:wrap}
.chip{
  font-size:.78rem;font-weight:700;padding:7px 14px;border-radius:999px;
  border:1.5px solid var(--line);background:#fff;color:var(--ink-soft);
}
.chip.accent{border-color:var(--accent);color:var(--accent-deep);background:var(--accent-soft)}

/* ---- sections ---- */
main{max-width:920px;margin:0 auto;padding:0 20px 100px}
section{margin-top:64px}
.sec-head{display:flex;align-items:baseline;gap:16px;margin-bottom:26px}
.step-num{
  flex-shrink:0;
  font-size:2.6rem;font-weight:900;color:transparent;
  -webkit-text-stroke:2px var(--accent);
  line-height:1;
}
.sec-head h2{font-size:clamp(1.3rem,3.4vw,1.7rem);font-weight:900;line-height:1.5}
.card{
  background:#fff;border:1.5px solid var(--line);border-radius:var(--radius);
  padding:28px;margin-bottom:18px;
  box-shadow:0 2px 0 var(--line);
}
.card h3{font-size:1.05rem;font-weight:700;margin-bottom:12px;display:flex;align-items:center;gap:8px}
.card p{color:var(--ink-soft);font-size:.95rem}
.card p+p{margin-top:10px}
.card strong{color:var(--ink)}
.card ul,.card ol{padding-left:1.4em;color:var(--ink-soft);font-size:.95rem}
.card li{margin:6px 0}
.card li::marker{color:var(--accent);font-weight:700}

/* before / after */
.ba{display:grid;grid-template-columns:1fr 1fr;gap:18px}
@media(max-width:640px){.ba{grid-template-columns:1fr}}
.ba .card{margin:0}
.ba .tag{font-size:.72rem;font-weight:700;letter-spacing:.12em;padding:4px 12px;border-radius:999px;display:inline-block;margin-bottom:14px}
.ba .before .tag{background:var(--coral-soft);color:var(--coral)}
.ba .after .tag{background:var(--green-soft);color:var(--green)}
.ba .bubble{
  background:var(--paper-2);border-radius:12px;padding:12px 16px;
  font-size:.88rem;color:var(--ink-soft);margin-top:10px;position:relative;
}
.ba .after .bubble{background:var(--green-soft)}

/* tool select cards (landing) */
.tool-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}
@media(max-width:640px){.tool-grid{grid-template-columns:1fr}}
.tool-card{
  display:block;text-decoration:none;color:var(--ink);
  background:#fff;border:2px solid var(--line);border-radius:var(--radius);
  padding:32px 28px;transition:all .18s;position:relative;overflow:hidden;
}
.tool-card:hover{transform:translateY(-3px);box-shadow:0 8px 24px rgba(38,32,58,.1)}
.tool-card.cc:hover{border-color:#5d4fd3}
.tool-card.cx:hover{border-color:#0e8a72}
.tool-card .t-ico{font-size:2rem;margin-bottom:12px}
.tool-card h3{font-size:1.2rem;font-weight:900;margin-bottom:8px}
.tool-card p{font-size:.88rem;color:var(--ink-soft)}
.tool-card .t-cta{
  display:inline-block;margin-top:18px;font-weight:700;font-size:.9rem;
  font-family:'Zen Kaku Gothic New',sans-serif;
}
.tool-card.cc .t-cta{color:#463aa8}
.tool-card.cx .t-cta{color:#0a6b58}
.tool-card .t-stripe{position:absolute;top:0;left:0;right:0;height:6px}
.tool-card.cc .t-stripe{background:#5d4fd3}
.tool-card.cx .t-stripe{background:#0e8a72}

/* OS toggle (segmented) */
.os-toggle-label{
  font-size:.82rem;font-weight:700;color:var(--ink-soft);
  margin-top:30px;letter-spacing:.08em;
}
.os-toggle{
  display:flex;margin-top:10px;max-width:480px;
  border-radius:999px;overflow:hidden;border:2px solid var(--ink);
  background:#fff;
}
.os-toggle a{
  flex:1;text-align:center;padding:14px 10px;text-decoration:none;
  font-family:'Zen Kaku Gothic New',sans-serif;font-weight:700;font-size:.95rem;
  color:var(--ink-soft);transition:all .15s;
}
.os-toggle a.active{background:var(--ink);color:#fff}
.os-toggle a:not(.active):hover{background:var(--paper-2);color:var(--ink)}

/* OS switch banner */
.os-switch{
  display:flex;align-items:center;gap:14px;flex-wrap:wrap;
  background:#fff;border:2px dashed var(--accent);border-radius:16px;
  padding:18px 24px;margin:28px 0 0;
}
.os-switch .os-ico{font-size:1.6rem;flex-shrink:0}
.os-switch p{font-size:.92rem;color:var(--ink-soft);flex-grow:1;margin:0}
.os-switch p strong{color:var(--ink)}
.os-switch a{
  flex-shrink:0;
  font-family:'Zen Kaku Gothic New',sans-serif;font-weight:700;font-size:.9rem;
  background:var(--accent);color:#fff;text-decoration:none;
  padding:10px 22px;border-radius:999px;transition:all .15s;
}
.os-switch a:hover{background:var(--accent-deep);transform:translateY(-1px)}

/* tool card OS buttons */
.t-os{display:flex;flex-direction:column;gap:12px;margin-top:20px}
.t-os a{
  display:flex;align-items:center;justify-content:space-between;
  text-decoration:none;font-weight:700;font-size:.95rem;
  font-family:'Zen Kaku Gothic New',sans-serif;
  padding:16px 22px;border-radius:14px;transition:all .15s;
  color:#fff;box-shadow:0 3px 0 rgba(38,32,58,.18);
}
.t-os a::after{content:"→";font-size:1.1rem;opacity:.85}
.t-os a:hover{transform:translateY(-2px);box-shadow:0 6px 14px rgba(38,32,58,.22)}
.t-os a:active{transform:translateY(1px);box-shadow:0 1px 0 rgba(38,32,58,.18)}
.tool-card.cc .t-os a{background:#5d4fd3}
.tool-card.cc .t-os a:hover{background:#463aa8}
.tool-card.cx .t-os a{background:#0e8a72}
.tool-card.cx .t-os a:hover{background:#0a6b58}

/* flow diagram */
.flow{display:flex;flex-direction:column;gap:0;margin:18px 0 6px}
.flow-item{display:flex;gap:14px;align-items:flex-start}
.flow-dot{
  flex-shrink:0;width:34px;height:34px;border-radius:50%;
  background:var(--accent);color:#fff;font-weight:700;font-size:.85rem;
  display:flex;align-items:center;justify-content:center;
  font-family:'DM Mono',monospace;
}
.flow-line{width:2px;flex:none;height:18px;background:var(--line);margin-left:16px}
.flow-body{padding-bottom:18px;padding-top:4px}
.flow-body b{font-size:.95rem}
.flow-body span{display:block;font-size:.85rem;color:var(--ink-soft)}

/* prompt box */
.prompt-box{
  border-radius:14px;overflow:hidden;
  border:1.5px solid var(--code-bg);
  background:var(--code-bg);
}
.prompt-head{
  display:flex;align-items:center;gap:10px;padding:12px 18px;
  border-bottom:1px solid rgba(255,255,255,.12);
}
.prompt-head .dots{display:flex;gap:6px}
.prompt-head .dots i{width:10px;height:10px;border-radius:50%;background:rgba(255,255,255,.22)}
.prompt-head .fname{font-size:.78rem;color:rgba(255,255,255,.55);font-family:'DM Mono',monospace}
.copy-btn{
  margin-left:auto;
  font-family:'Zen Kaku Gothic New',sans-serif;font-weight:700;font-size:.85rem;
  background:var(--accent);color:#fff;border:none;border-radius:999px;
  padding:8px 20px;cursor:pointer;transition:all .15s;
}
.copy-btn:hover{background:var(--accent-deep);transform:translateY(-1px)}
.copy-btn.done{background:var(--green)}
.prompt-scroll{
  max-height:420px;overflow:auto;padding:20px 22px;
}
.prompt-scroll pre{
  font-size:.8rem;line-height:1.75;color:var(--code-ink);
  white-space:pre-wrap;word-break:break-word;
}

/* small code */
.inline-cmd{
  background:var(--code-bg);border-radius:12px;padding:14px 18px;
  display:flex;align-items:center;gap:12px;margin:12px 0;
}
.inline-cmd code{color:var(--code-ink);font-size:.82rem;word-break:break-all;flex-grow:1}
.inline-cmd .copy-btn{padding:6px 14px;font-size:.78rem;flex-shrink:0}

/* notes */
.note{
  border-radius:14px;padding:18px 22px;font-size:.9rem;margin:14px 0;
  display:flex;gap:12px;align-items:flex-start;
}
.note .ico{flex-shrink:0;font-size:1.1rem;line-height:1.6}
.note.warn{background:var(--coral-soft);color:#8a3c1e}
.note.tip{background:var(--accent-soft);color:var(--accent-deep)}
.note.ok{background:var(--green-soft);color:#1e5c3a}

/* table */
table{width:100%;border-collapse:collapse;font-size:.88rem;margin:12px 0}
th,td{padding:10px 14px;text-align:left;border-bottom:1px solid var(--line)}
th{font-size:.78rem;letter-spacing:.08em;color:var(--ink-soft);font-weight:700}
td b{color:var(--accent-deep)}

/* accordion */
details{
  background:#fff;border:1.5px solid var(--line);border-radius:14px;
  margin-bottom:12px;overflow:hidden;
}
summary{
  cursor:pointer;padding:18px 22px;font-weight:700;font-size:.95rem;
  list-style:none;display:flex;align-items:center;gap:10px;
}
summary::before{content:"▸";color:var(--accent);transition:transform .2s;font-size:.9rem}
details[open] summary::before{transform:rotate(90deg)}
details .d-body{padding:0 22px 20px;font-size:.9rem;color:var(--ink-soft)}
details .d-body code{background:var(--paper-2);padding:2px 8px;border-radius:6px;font-size:.82rem}

/* pager (next/prev manual link) */
.pager{
  display:flex;justify-content:space-between;gap:14px;margin-top:60px;flex-wrap:wrap;
}
.pager a{
  text-decoration:none;font-weight:700;font-size:.9rem;
  font-family:'Zen Kaku Gothic New',sans-serif;
  padding:14px 24px;border-radius:999px;border:1.5px solid var(--line);
  background:#fff;color:var(--ink-soft);
}
.pager a:hover{border-color:var(--accent);color:var(--accent-deep)}

/* win-pattern cards (monetization types) */
.win-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin:16px 0}
@media(max-width:640px){.win-grid{grid-template-columns:1fr}}
.win-card{
  background:#fff;border:1.5px solid var(--line);border-radius:16px;
  padding:22px 24px;box-shadow:0 2px 0 var(--line);position:relative;
  border-top:5px solid var(--accent);
}
.win-card .w-no{
  font-family:'DM Mono',monospace;font-size:.78rem;font-weight:700;
  color:var(--accent-deep);letter-spacing:.06em;
}
.win-card h4{font-family:'Zen Kaku Gothic New',sans-serif;font-size:1.05rem;font-weight:900;margin:4px 0 10px}
.win-card p{font-size:.9rem;color:var(--ink-soft);margin-bottom:12px}
.win-card .w-ex{
  font-size:.82rem;background:var(--accent-soft);color:var(--accent-deep);
  border-radius:10px;padding:10px 14px;line-height:1.7;
}
.win-card .w-ex b{color:var(--accent-deep)}

/* stat row */
.stats{display:flex;gap:14px;flex-wrap:wrap;margin:14px 0}
.stat{
  flex:1;min-width:130px;background:#fff;border:1.5px solid var(--line);
  border-radius:14px;padding:16px 18px;box-shadow:0 2px 0 var(--line);
}
.stat .s-num{font-family:'Zen Kaku Gothic New',sans-serif;font-size:1.6rem;font-weight:900;color:var(--accent-deep);line-height:1.2}
.stat .s-lb{font-size:.78rem;color:var(--ink-soft);margin-top:4px}

/* footer */
footer{border-top:1px solid var(--line);margin-top:80px}
.footer-in{max-width:920px;margin:0 auto;padding:36px 20px;font-size:.82rem;color:var(--ink-soft);display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap}

/* toast */
#toast{
  position:fixed;bottom:28px;left:50%;transform:translate(-50%,80px);
  background:var(--ink);color:var(--paper);font-weight:700;font-size:.88rem;
  padding:12px 26px;border-radius:999px;transition:transform .25s;z-index:99;
}
#toast.show{transform:translate(-50%,0)}