:root{
  --bg:#f5f6f3;--ink:#10231d;--ink-2:#4a5b54;--line:#d9ded8;
  --deep:#0f2a24;--accent:#e8a33d;--accent-ink:#5a3a00;
  --paper:#fff;--high:#b3261e;--med:#b86e00;--low:#1b7f4b;
  --serif:"Instrument Serif",Georgia,serif;--sans:Mukta,system-ui,sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--sans);font-size:1.0625rem;line-height:1.6;-webkit-font-smoothing:antialiased}
a{color:inherit}
:focus-visible{outline:3px solid var(--accent);outline-offset:3px}

.nav{max-width:1120px;margin:0 auto;padding:24px 24px 0;display:flex;justify-content:space-between;align-items:center}
.brand{font-family:var(--serif);font-size:1.9rem;text-decoration:none;letter-spacing:.01em}
.nav-link{font-weight:500;text-decoration:none;border-bottom:2px solid var(--accent);padding-bottom:2px}

main{max-width:1120px;margin:0 auto;padding:0 24px}

/* Hero */
.hero{display:grid;grid-template-columns:1.1fr .9fr;gap:64px;align-items:center;padding:72px 0 88px}
h1{font-family:var(--serif);font-weight:400;font-size:clamp(3rem,7.4vw,5.6rem);line-height:.98;letter-spacing:-.02em;margin:0 0 24px}
h1 em{font-style:italic}
.lead{font-size:1.2rem;color:var(--ink-2);max-width:32em;margin:0 0 32px}
.cta-row{display:flex;align-items:center;gap:20px;flex-wrap:wrap}
.note{font-size:.95rem;color:var(--ink-2)}

.btn{font:inherit;font-weight:700;border:0;border-radius:999px;padding:14px 28px;cursor:pointer;text-decoration:none;display:inline-block;transition:transform .15s ease,background .15s ease}
.btn-primary{background:var(--deep);color:#fff}
.btn-primary:hover{background:#17463b;transform:translateY(-1px)}
.btn:disabled{opacity:.6;cursor:wait}

/* Letter */
.letter{margin:0;background:var(--paper);padding:34px 34px 22px;border-radius:6px;box-shadow:0 1px 0 var(--line),0 30px 60px -28px rgba(15,42,36,.35);transform:rotate(1.6deg);font-family:Georgia,serif;font-size:1rem;color:#2b2b2b;position:relative}
.letter::before{content:"";position:absolute;inset:0;border-radius:6px;border:1px solid var(--line);pointer-events:none}
.letter-head{font-family:var(--sans);font-weight:700;letter-spacing:.08em;font-size:.85rem;border-bottom:2px solid #2b2b2b;padding-bottom:10px;margin-bottom:16px}
.letter p{margin:0 0 12px}
.letter-foot{margin-top:24px;font-style:italic;color:#777}
.letter figcaption{font-family:var(--sans);font-size:.9rem;color:var(--ink-2);margin-top:22px;padding-top:12px;border-top:1px dashed var(--line)}
mark{background:linear-gradient(var(--accent),var(--accent)) no-repeat 0 88%/0 .62em;color:inherit;padding:0 2px;animation:hl .9s ease forwards}
.m1{animation-delay:.5s}.m2{animation-delay:1.1s}.m3{animation-delay:1.7s}
@keyframes hl{to{background-size:100% .62em}}

/* Tool */
.try{padding:8px 0 96px;scroll-margin-top:16px}
.sheet{display:grid;grid-template-columns:1fr 1fr;background:var(--paper);border:1px solid var(--line);border-radius:20px;overflow:hidden;box-shadow:0 40px 80px -50px rgba(15,42,36,.4)}
.pane{padding:28px;min-height:460px;display:flex;flex-direction:column}
.pane.out{background:#f9faf8;border-left:1px solid var(--line)}
.pane-top{display:flex;justify-content:space-between;align-items:center;margin-bottom:12px}
.pane-top label{font-weight:700}
.ghost{font:inherit;background:none;border:0;color:var(--ink-2);text-decoration:underline;cursor:pointer;padding:4px}
textarea{flex:1;min-height:280px;width:100%;resize:vertical;border:1px solid var(--line);border-radius:12px;padding:16px;font:inherit;font-size:1rem;color:var(--ink);background:#fff}
textarea::placeholder{color:#8a968f}
.pane-bottom{display:flex;justify-content:space-between;align-items:center;margin-top:16px;gap:12px}
.seg{display:inline-flex;background:#eef1ed;border-radius:999px;padding:4px}
.seg button{font:inherit;font-weight:500;border:0;background:none;padding:7px 16px;border-radius:999px;cursor:pointer;color:var(--ink-2)}
.seg button.on{background:#fff;color:var(--ink);box-shadow:0 1px 3px rgba(0,0,0,.12)}

.empty{margin:auto 0;color:var(--ink-2);max-width:22em}
.empty-title{font-family:var(--serif);font-size:1.9rem;color:var(--ink);margin:0 0 6px}

/* Result */
.res{animation:in .35s ease}
@keyframes in{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}
.kind{font-size:.95rem;color:var(--ink-2);margin:0 0 4px}
.res h3{font-family:var(--serif);font-weight:400;font-size:1.7rem;line-height:1.2;margin:0 0 14px}
.meter{display:flex;align-items:center;gap:10px;margin-bottom:18px;font-weight:700}
.bars{display:flex;gap:4px}
.bars i{width:34px;height:8px;border-radius:4px;background:var(--line)}
.risk-high{color:var(--high)}.risk-medium{color:var(--med)}.risk-low{color:var(--low)}
.risk-high .bars i:nth-child(-n+3),.risk-medium .bars i:nth-child(-n+2),.risk-low .bars i:nth-child(1){background:currentColor}
.facts{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-bottom:20px}
.fact{border:1px solid var(--line);border-radius:12px;padding:10px 14px;background:#fff}
.fact small{display:block;color:var(--ink-2)}
.fact strong{font-size:1.05rem}
.steps-title{font-weight:700;margin:0 0 6px}
.res ol{margin:0 0 18px;padding-left:22px}
.res li{margin:6px 0;padding-left:4px}
.res li::marker{font-weight:700;color:var(--deep)}
.alert{border-radius:12px;padding:12px 14px;background:#fff4dc;border:1px solid #f0d28e;color:var(--accent-ink);font-size:.98rem}
.alert.scam{background:#fde8e6;border-color:#f3b8b3;color:#7a1610}
.copy{margin-top:14px;align-self:flex-start}

/* Why */
.why{display:grid;grid-template-columns:1fr 1fr;gap:64px;padding:16px 0 96px;align-items:start}
.why h2{font-family:var(--serif);font-weight:400;font-size:clamp(2rem,4vw,3rem);line-height:1.08;margin:0 0 16px}
.why p{color:var(--ink-2);max-width:30em;margin:0}
.points{list-style:none;padding:0;margin:0;display:grid;gap:0}
.points li{padding:18px 0;border-top:1px solid var(--line);color:var(--ink-2)}
.points li:last-child{border-bottom:1px solid var(--line)}
.points strong{display:block;color:var(--ink);font-size:1.1rem}

.foot{max-width:1120px;margin:0 auto;padding:28px 24px 48px;display:flex;justify-content:space-between;gap:24px;flex-wrap:wrap;color:var(--ink-2);font-size:.92rem;border-top:1px solid var(--line)}

@media(max-width:860px){
  .hero,.why{grid-template-columns:1fr;gap:40px}
  .hero{padding:48px 0 56px}
  .letter{transform:none}
  .sheet{grid-template-columns:1fr}
  .pane.out{border-left:0;border-top:1px solid var(--line)}
}
@media(prefers-reduced-motion:reduce){
  mark{animation:none;background-size:100% .62em}
  html{scroll-behavior:auto}.res{animation:none}.btn{transition:none}
}