/* ============================================================
   MIRAI NOTE β — KAIWAI.TECH
   A quiet, premium, whitespace-first brand — deliberately NOT the
   Zscaler Lab "control room" aesthetic. Self-contained, no external
   fonts/CDNs.
   ============================================================ */

:root{
  --mn-bg:#0b0d12;
  --mn-panel:#12151c;
  --mn-panel2:#171b24;
  --mn-line:#232733;
  --mn-text:#eef0f3;
  --mn-muted:#8b93a1;
  --mn-muted-dim:#5a6170;
  --mn-accent:#d4af6a;
  --mn-accent-ink:#1a1406;
  --mn-ok:#7fd0a8;
  --mn-max:720px;
  --mn-serif:"Hiragino Mincho ProN","Yu Mincho","Shippori Mincho",serif;
  --mn-sans:-apple-system,BlinkMacSystemFont,"Hiragino Kaku Gothic ProN","Yu Gothic",Meiryo,sans-serif;
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--mn-bg);
  color:var(--mn-text);
  font-family:var(--mn-sans);
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
a{color:inherit}
button{font:inherit;color:inherit}
::selection{background:var(--mn-accent);color:var(--mn-accent-ink)}

.mn-wrap{width:min(calc(100% - 40px),var(--mn-max));margin:auto}

/* ---------- topbar ---------- */
.mn-topbar{border-bottom:1px solid var(--mn-line);padding:18px 0}
.mn-topbar-inner{display:flex;align-items:baseline;gap:10px}
.mn-brand{font-size:13px;font-weight:600;text-decoration:none;color:var(--mn-muted);letter-spacing:.02em}
.mn-brand-sep{color:var(--mn-muted-dim);font-size:12px}
.mn-brand-sub{font-size:13px;font-weight:600;letter-spacing:.02em}
.mn-brand-sub small{color:var(--mn-accent);font-size:10px;vertical-align:super;margin-left:2px}

/* ---------- hero ---------- */
.mn-hero{padding:96px 0 80px;text-align:center}
.mn-kicker{font-size:11px;letter-spacing:.24em;color:var(--mn-accent);font-weight:600;margin:0 0 18px;text-transform:uppercase}
.mn-hero h1{
  font-family:var(--mn-serif);
  font-size:clamp(42px,9vw,68px);
  font-weight:600;letter-spacing:.02em;
  margin:0 0 20px;
}
.mn-hero-sub{
  font-family:var(--mn-serif);
  font-size:clamp(20px,4vw,28px);
  font-weight:500;color:var(--mn-text);
  margin:0 0 28px;line-height:1.6;
}
.mn-hero-lead{font-size:15px;color:var(--mn-muted);max-width:480px;margin:0 auto 20px;line-height:1.9}
.mn-hero-badge{
  display:inline-block;font-size:12px;color:var(--mn-accent);
  border:1px solid var(--mn-accent);border-radius:999px;
  padding:6px 18px;margin:0 0 32px;letter-spacing:.04em;
}
.mn-hero-actions{margin-bottom:18px}
.mn-hero-note{font-size:12px;color:var(--mn-muted-dim)}
.mn-only-mobile{display:none}

/* ---------- buttons ---------- */
.mn-btn{
  appearance:none;border:1px solid var(--mn-accent);background:var(--mn-accent);color:var(--mn-accent-ink);
  padding:15px 28px;font-weight:600;font-size:14.5px;letter-spacing:.02em;
  border-radius:4px;cursor:pointer;
  transition:transform .15s ease, opacity .15s ease;
}
.mn-btn:hover{opacity:.9}
.mn-btn:active{transform:translateY(1px)}
.mn-btn:disabled{opacity:.5;cursor:not-allowed}
.mn-btn-primary{}
.mn-btn-ghost{background:transparent;color:var(--mn-text);border-color:var(--mn-line)}
.mn-btn-ghost:hover{border-color:var(--mn-accent);opacity:1}
.mn-btn-small{padding:9px 16px;font-size:12.5px}
.mn-btn-large{padding:18px 36px;font-size:16px}
.mn-btn-large b{margin-left:8px}

/* ---------- wizard ---------- */
.mn-wizard{padding:64px 0 100px}
.mn-wizard-progress{margin-bottom:48px}
.mn-wizard-progress-bar{height:2px;background:var(--mn-line);position:relative;margin-bottom:10px}
.mn-wizard-progress-bar i{position:absolute;left:0;top:0;height:100%;background:var(--mn-accent);width:0%;transition:width .3s ease;display:block}
#wizardStepLabel{font-size:11px;letter-spacing:.12em;color:var(--mn-muted-dim)}

.mn-step{display:none;min-height:220px}
.mn-step.is-active{display:block;animation:mnStepIn .3s ease}
@keyframes mnStepIn{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}
.mn-step-eyebrow{font-size:11px;letter-spacing:.12em;color:var(--mn-muted-dim);margin:0 0 10px}
.mn-step h2{font-family:var(--mn-serif);font-size:clamp(24px,4vw,32px);font-weight:600;margin:0 0 16px}
.mn-step-help{font-size:13.5px;color:var(--mn-muted);line-height:1.85;max-width:460px;margin:0 0 28px}

.mn-field{
  display:flex;align-items:baseline;gap:10px;
  border-bottom:2px solid var(--mn-line);padding-bottom:12px;max-width:280px;
}
.mn-field:focus-within{border-color:var(--mn-accent)}
.mn-field input[type="number"]{
  flex:1;min-width:0;background:transparent;border:0;color:var(--mn-text);
  font-size:32px;font-weight:600;font-family:var(--mn-sans);
  outline:none;-moz-appearance:textfield;
}
.mn-field input[type="number"]::-webkit-outer-spin-button,
.mn-field input[type="number"]::-webkit-inner-spin-button{-webkit-appearance:none;margin:0}
.mn-field .mn-unit{font-size:14px;color:var(--mn-muted);white-space:nowrap}

.mn-field-group{display:flex;flex-direction:column;gap:24px;max-width:340px}
.mn-subfield span{display:block;font-size:12.5px;color:var(--mn-muted);margin-bottom:10px}

.mn-field-range{max-width:420px;border-bottom:0;flex-direction:column;align-items:stretch;gap:14px}
.mn-field-range input[type="range"]{width:100%;accent-color:var(--mn-accent);height:28px}
.mn-field-range output{font-size:28px;font-weight:600;color:var(--mn-accent)}

.mn-wizard-nav{display:flex;gap:12px;margin-top:44px}
.mn-form-error{color:#e8918c;font-size:13px;margin-top:16px;min-height:1.4em}

/* ---------- results / chapters ---------- */
.mn-results{padding:24px 0 60px}
.mn-chapter{display:none;padding:56px 0;border-bottom:1px solid var(--mn-line)}
.mn-chapter.is-active{display:block;animation:mnStepIn .35s ease}
.mn-chapter-eyebrow{font-size:11px;letter-spacing:.16em;color:var(--mn-accent);margin:0 0 10px}
.mn-chapter h2{font-family:var(--mn-serif);font-size:clamp(26px,4.4vw,36px);font-weight:600;margin:0 0 18px}
.mn-chapter-lead{font-size:14.5px;color:var(--mn-muted);line-height:1.9;margin:0 0 28px;max-width:520px}
.mn-chapter-body{font-size:14.5px;line-height:1.95;color:#d6d9e0;max-width:560px;margin:24px 0 0}

.mn-facts{display:grid;grid-template-columns:repeat(2,1fr);gap:1px;background:var(--mn-line);border:1px solid var(--mn-line)}
.mn-fact{background:var(--mn-panel);padding:18px 20px;display:flex;flex-direction:column;gap:6px}
.mn-fact-label{font-size:11.5px;color:var(--mn-muted)}
.mn-fact-value{font-size:19px;font-weight:600;font-variant-numeric:tabular-nums}

.mn-headline{
  font-family:var(--mn-serif);font-size:clamp(20px,3.4vw,26px);font-weight:600;
  color:var(--mn-accent);line-height:1.6;margin:0 0 28px;
}

.mn-chart-box{position:relative;border:1px solid var(--mn-line);background:var(--mn-panel);padding:20px 12px 8px;margin:0 0 24px}
.mn-chart{width:100%;height:auto;display:block}
.mn-chart-grid{stroke:var(--mn-line);stroke-width:1}
.mn-chart-axis-label{font-size:9px;fill:var(--mn-muted-dim);font-family:var(--mn-sans)}
.mn-chart-axis-x{text-anchor:middle}
.mn-chart-mark{fill:var(--mn-accent);stroke:var(--mn-bg);stroke-width:2}
.mn-chart-blur-note{
  position:absolute;bottom:14px;right:16px;font-size:10.5px;color:var(--mn-muted-dim);
  letter-spacing:.04em;background:rgba(11,13,18,.7);padding:4px 10px;border:1px solid var(--mn-line);
}

.mn-chapter-nav{margin-top:36px}

/* ---------- paywall ---------- */
.mn-paywall{display:none;padding:64px 0 40px}
.mn-paywall.is-active{display:block;animation:mnStepIn .35s ease}
.mn-paywall h2{font-family:var(--mn-serif);font-size:clamp(26px,4.4vw,34px);font-weight:600;margin:0 0 20px}
.mn-paywall-lead{font-size:14.5px;color:var(--mn-muted);line-height:1.9;max-width:520px;margin:0 0 16px}
.mn-paywall-lead b{color:var(--mn-text)}
.mn-paywall-list{
  list-style:none;margin:24px 0 40px;padding:0;
  display:grid;gap:1px;background:var(--mn-line);border:1px solid var(--mn-line);
}
.mn-paywall-list li{background:var(--mn-panel);padding:14px 18px;font-size:13.5px;color:#d6d9e0;position:relative;padding-left:34px}
.mn-paywall-list li::before{content:"○";position:absolute;left:14px;color:var(--mn-accent);font-size:11px}
.mn-paywall-cta{text-align:center;padding:20px 0}
.mn-paywall-note{font-size:12px;color:var(--mn-muted-dim);margin-top:16px}

/* ---------- thanks ---------- */
.mn-thanks{padding:80px 0;text-align:center}
.mn-thanks h2{font-family:var(--mn-serif);font-size:clamp(26px,4.4vw,34px);font-weight:600;margin:0 0 20px}
.mn-thanks p{font-size:14.5px;color:var(--mn-muted);line-height:1.9;max-width:440px;margin:0 auto 8px}
.mn-thanks .mn-btn{margin-top:28px}

/* ---------- footer ---------- */
.mn-footer{padding:40px 0 60px;border-top:1px solid var(--mn-line)}
.mn-disclaimer{font-size:11.5px;line-height:1.9;color:var(--mn-muted-dim);max-width:640px;margin:0 0 20px}
.mn-disclaimer b{color:var(--mn-muted)}
.mn-footer-meta{font-size:11px;color:var(--mn-muted-dim);display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap}

/* ---------- responsive ---------- */
@media(max-width:1024px){
  .mn-hero{padding:72px 0 56px}
}
@media(max-width:700px){
  .mn-only-mobile{display:inline}
  .mn-hero{padding:56px 0 44px}
  .mn-facts{grid-template-columns:1fr 1fr}
  .mn-field input[type="number"]{font-size:28px}
  .mn-wizard-nav{position:sticky;bottom:0;background:linear-gradient(180deg,transparent,var(--mn-bg) 30%);padding-top:16px}
}
@media(max-width:480px){
  .mn-facts{grid-template-columns:1fr}
  .mn-btn-large{width:100%}
  .mn-paywall-cta .mn-btn-large{padding:18px 20px}
  .mn-btn{width:100%}
  .mn-wizard-nav{flex-wrap:wrap}
  .mn-wizard-nav .mn-btn{flex:1 1 auto}
}