:root{
  --bg:#ffffff; --bg-alt:#f6f7f9; --ink:#0f172a; --ink-2:#334155; --muted:#64748b;
  --line:#e2e8f0; --accent:#0d9488; --accent-ink:#ffffff; --accent-soft:#ccfbf1;
  --dark:#0b1220; --radius:12px;
  --sans: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:var(--sans);color:var(--ink);background:var(--bg);line-height:1.6;font-size:17px;-webkit-font-smoothing:antialiased}
a{color:var(--accent)}
img{display:block}
.wrap{max-width:1120px;margin:0 auto;padding:0 24px}
.narrow{max-width:760px}
.mono{font-family:var(--mono)}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}
h1,h2,h3{line-height:1.2;letter-spacing:-.015em;margin:0 0 .5em}
h1{font-size:clamp(2rem,4.2vw,3.1rem);font-weight:750}
h2{font-size:clamp(1.6rem,3vw,2.2rem);font-weight:700}
h3{font-size:1.1rem;font-weight:650}
p{margin:0 0 1em}
.eyebrow{font-family:var(--mono);font-size:.8rem;text-transform:uppercase;letter-spacing:.08em;color:var(--accent);margin-bottom:.8em;font-weight:600}
.lede{font-size:1.15rem;color:var(--ink-2);max-width:60ch}
.sub{color:var(--ink-2);max-width:62ch}
.fine{font-size:.88rem;color:var(--muted)}
.center{text-align:center}

/* buttons */
.btn{display:inline-block;background:var(--ink);color:#fff;text-decoration:none;font-weight:600;padding:.8em 1.25em;border-radius:10px;border:1px solid var(--ink);font-size:1rem;cursor:pointer;transition:transform .08s ease, background .15s}
.btn:hover{background:#1e293b}
.btn:active{transform:translateY(1px)}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--line)}
.btn-ghost:hover{background:var(--bg-alt)}
.btn-sm{padding:.5em .9em;font-size:.9rem}
.btn:focus-visible,a:focus-visible,input:focus-visible,summary:focus-visible{outline:3px solid var(--accent);outline-offset:2px}

/* nav */
.nav{position:sticky;top:0;z-index:10;background:rgba(255,255,255,.88);backdrop-filter:saturate(1.4) blur(8px);border-bottom:1px solid var(--line)}
.nav-inner{display:flex;align-items:center;gap:24px;height:64px}
.brand{display:flex;align-items:center;gap:10px;font-weight:750;color:var(--ink);text-decoration:none;letter-spacing:-.01em}
.nav-links{display:flex;gap:22px;margin-left:auto}
.nav-links a{color:var(--ink-2);text-decoration:none;font-size:.95rem}
.nav-links a:hover{color:var(--ink)}

/* hero */
.hero{padding:80px 0 72px;background:
  radial-gradient(900px 400px at 85% -10%, #ccfbf1 0%, transparent 60%),
  linear-gradient(#fff,#fff)}
.hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:56px;align-items:center}
.cta-row{display:flex;flex-wrap:wrap;gap:12px;margin:28px 0 12px}
.brief-card{background:var(--dark);color:#cbd5e1;border-radius:14px;box-shadow:0 20px 50px -20px rgba(15,23,42,.45);overflow:hidden;border:1px solid #1e293b}
.brief-head{display:flex;align-items:center;gap:7px;padding:12px 16px;border-bottom:1px solid #1e293b;font-size:.8rem;color:#94a3b8}
.brief-head .mono{margin-left:8px}
.dot{width:10px;height:10px;border-radius:50%;display:inline-block}
.dot.r{background:#f87171}.dot.y{background:#fbbf24}.dot.g{background:#34d399}
.brief-body{padding:18px 20px 8px;font-size:.83rem;line-height:1.55}
.brief-body p{margin:0 0 .45em}
.brief-body .gap{margin-top:1em}
.k{color:#5eead4;font-weight:600}
.tag{display:inline-block;min-width:62px;color:#fbbf24}
.src{color:#94a3b8;font-size:.85em}
.card-note{font-size:.75rem;color:#64748b;padding:0 20px 14px;margin:0}

/* sections */
.section{padding:88px 0}
.section.alt{background:var(--bg-alt);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.steps{list-style:none;padding:0;margin:36px 0 0;display:grid;grid-template-columns:repeat(3,1fr);gap:24px;counter-reset:none}
.steps li{border:1px solid var(--line);border-radius:var(--radius);padding:26px;background:#fff}
.step-n{display:inline-block;color:var(--accent);font-weight:700;margin-bottom:10px;font-size:.9rem}
.steps p{color:var(--ink-2);margin:0}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:36px}
.feature{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px}
.feature p{color:var(--ink-2);margin:0;font-size:.96rem}
.pill{font-family:var(--mono);font-size:.68rem;font-weight:600;background:var(--accent-soft);color:#115e59;padding:2px 7px;border-radius:999px;vertical-align:middle;margin-left:4px}

/* sample */
.disclaimer{background:#fffbeb;border:1px solid #fde68a;color:#78350f;border-radius:10px;padding:12px 16px;font-size:.93rem;max-width:80ch}
.sample{margin-top:26px;border:1px solid var(--line);border-radius:14px;padding:32px;background:#fff;box-shadow:0 1px 0 rgba(15,23,42,.03)}
.sample-meta{display:flex;flex-wrap:wrap;gap:8px 18px;font-size:.78rem;color:var(--muted);padding-bottom:18px;margin-bottom:22px;border-bottom:1px dashed var(--line)}
.sample-meta span:first-child{color:var(--ink);font-weight:700}
.excerpt{padding-left:1.1em;margin:0 0 24px}
.excerpt li{margin-bottom:14px;color:var(--ink-2)}
.excerpt li strong{color:var(--ink)}
.excerpt-p{color:var(--ink-2)}
.sample .src{color:var(--accent);font-size:.78rem;white-space:nowrap}
.sample-foot{margin-top:24px;padding-top:22px;border-top:1px dashed var(--line)}
.sample-foot .fine{margin-top:12px}

/* pricing */
.tiers{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin:36px 0 20px;align-items:stretch}
.tier{background:#fff;border:1px solid var(--line);border-radius:14px;padding:28px;display:flex;flex-direction:column}
.tier.featured{border:2px solid var(--ink);box-shadow:0 18px 40px -24px rgba(15,23,42,.45)}
.badge{font-size:.7rem;text-transform:uppercase;letter-spacing:.06em;color:var(--accent);margin-bottom:8px;font-weight:700}
.price{font-size:1rem;color:var(--muted);margin-bottom:14px}
.price span{font-size:2.3rem;font-weight:750;color:var(--ink);letter-spacing:-.02em}
.tier ul{list-style:none;padding:0;margin:0 0 24px;flex:1}
.tier li{padding:7px 0 7px 26px;position:relative;border-top:1px solid var(--line);font-size:.96rem;color:var(--ink-2)}
.tier li:first-child{border-top:0}
.tier li::before{content:"";position:absolute;left:2px;top:14px;width:11px;height:6px;border-left:2px solid var(--accent);border-bottom:2px solid var(--accent);transform:rotate(-45deg)}
.tier .btn{text-align:center}

/* forms */
.form{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin:26px 0 12px}
.form label{display:flex;flex-direction:column;gap:6px;font-size:.9rem;font-weight:600;color:var(--ink-2)}
.form .full{grid-column:1 / -1}
input{font:inherit;padding:.75em .9em;border:1px solid #cbd5e1;border-radius:10px;background:#fff;color:var(--ink);width:100%}
input::placeholder{color:#94a3b8}
.newsletter{display:grid;grid-template-columns:1fr;gap:0}
.form.inline{grid-template-columns:1fr auto;margin-top:6px}
.form.inline .form-msg{grid-column:1 / -1;margin:0}

/* faq */
details{border-bottom:1px solid var(--line);padding:18px 0}
details:first-of-type{border-top:1px solid var(--line);margin-top:24px}
summary{cursor:pointer;font-weight:650;list-style:none;display:flex;justify-content:space-between;gap:16px}
summary::-webkit-details-marker{display:none}
summary::after{content:"+";font-family:var(--mono);color:var(--muted);font-weight:400}
details[open] summary::after{content:"\2212"}
details p{color:var(--ink-2);margin:12px 0 0}

/* footer */
.footer{background:var(--dark);color:#cbd5e1;padding:44px 0 28px}
.footer .brand{color:#fff}
.footer-inner{display:flex;justify-content:space-between;gap:24px;flex-wrap:wrap;margin-bottom:22px}
.footer-links{display:flex;flex-direction:column;gap:8px;text-align:right}
.footer-links a{color:#e2e8f0;text-decoration:none}
.footer-links a:hover{color:#5eead4}
.footer .fine{color:#94a3b8;margin-top:8px}
.legal{border-top:1px solid #1e293b;padding-top:18px}

/* responsive */
@media (max-width: 900px){
  .hero-grid{grid-template-columns:1fr;gap:40px}
  .steps,.grid-3,.tiers{grid-template-columns:1fr}
  .nav-links{display:none}
  .nav-inner .btn-sm{margin-left:auto}
  .section{padding:64px 0}
  .hero{padding:56px 0}
}
@media (max-width: 560px){
  body{font-size:16px}
  .form,.form.inline{grid-template-columns:1fr}
  .sample{padding:22px}
  .footer-links{text-align:left}
  .cta-row .btn{width:100%;text-align:center}
}