/* ============================================================
   R&S Growth Marketing — design system
   Dark premium · ouro envelhecido · sem dependência externa
   ============================================================ */

:root{
  --bg:#0a0b0c;
  --bg-2:#0f1113;
  --surface:#131619;
  --surface-2:#181b1f;
  --line:#23272c;
  --line-hi:#31363d;

  --text:#f2efe9;
  --muted:#9c968b;
  --muted-2:#6f6a62;

  --gold:#c9a86a;
  --gold-hi:#e6cd97;
  --gold-dim:rgba(201,168,106,.12);

  --ok:#5fbf8f;
  --warn:#d99a4e;
  --bad:#d9645e;

  --serif:"Iowan Old Style","Palatino Linotype",Palatino,Georgia,"Times New Roman",serif;
  --sans:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  --mono:ui-monospace,SFMono-Regular,"SF Mono",Menlo,Consolas,monospace;

  --wrap:1120px;
  --r:14px;
  --r-sm:10px;
}

*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--sans);
  font-size:17px;
  line-height:1.65;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;height:auto;display:block}
a{color:inherit}

h1,h2,h3,h4{font-family:var(--serif);font-weight:600;line-height:1.15;letter-spacing:-.015em;margin:0}
h1{font-size:clamp(2.1rem,5.2vw,3.65rem)}
h2{font-size:clamp(1.65rem,3.4vw,2.5rem)}
h3{font-size:clamp(1.15rem,2vw,1.4rem)}
p{margin:0}

.wrap{max-width:var(--wrap);margin-inline:auto;padding-inline:22px}
.narrow{max-width:760px}
.section{padding-block:clamp(64px,9vw,116px)}
.section--tight{padding-block:clamp(48px,6vw,76px)}
.stack>*+*{margin-top:18px}
.center{text-align:center}

/* ---------- marcadores tipográficos ---------- */
.eyebrow{
  font-family:var(--sans);font-size:.72rem;font-weight:600;
  letter-spacing:.16em;text-transform:uppercase;color:var(--gold);
  display:flex;align-items:center;gap:10px;
}
.eyebrow::before{content:"";width:22px;height:1px;background:var(--gold);opacity:.6;flex:none}
.center .eyebrow{justify-content:center}
.lede{font-size:clamp(1.05rem,1.9vw,1.22rem);color:var(--muted);line-height:1.6}
.gold{color:var(--gold-hi)}
strong{color:var(--text);font-weight:600}

/* ---------- header ---------- */
.hdr{
  position:sticky;top:0;z-index:50;
  background:rgba(10,11,12,.82);
  backdrop-filter:saturate(140%) blur(12px);
  border-bottom:1px solid var(--line);
}
.hdr__in{display:flex;align-items:center;gap:26px;height:68px}
.brand{display:flex;align-items:center;gap:11px;text-decoration:none;flex:none}
.brand__mark{width:30px;height:30px;flex:none}
.brand__txt{font-family:var(--serif);font-size:1.06rem;letter-spacing:-.01em;white-space:nowrap}
.brand__txt em{font-style:normal;color:var(--gold)}
.nav{display:flex;gap:26px;margin-left:auto;align-items:center}
.nav a{
  text-decoration:none;font-size:.93rem;color:var(--muted);
  transition:color .18s;padding-block:6px;
}
.nav a:hover,.nav a[aria-current="page"]{color:var(--text)}
@media(max-width:860px){
  .nav{display:none}
  .hdr__in{justify-content:space-between}
}

/* ---------- botões ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  padding:14px 26px;border-radius:var(--r-sm);
  font-family:var(--sans);font-size:.97rem;font-weight:600;
  text-decoration:none;border:1px solid transparent;cursor:pointer;
  transition:transform .16s,box-shadow .2s,background .2s,border-color .2s;
  line-height:1;
}
.btn svg{width:17px;height:17px;flex:none}
.btn--primary{
  background:linear-gradient(180deg,var(--gold-hi),var(--gold));
  color:#241c0c;
  box-shadow:0 1px 0 rgba(255,255,255,.22) inset,0 10px 26px -12px rgba(201,168,106,.75);
}
.btn--primary:hover{transform:translateY(-1px);box-shadow:0 1px 0 rgba(255,255,255,.28) inset,0 16px 34px -14px rgba(201,168,106,.9)}
.btn--ghost{border-color:var(--line-hi);color:var(--text);background:transparent}
.btn--ghost:hover{border-color:var(--gold);color:var(--gold-hi)}
.btn--sm{padding:10px 18px;font-size:.88rem}
.btn-row{display:flex;flex-wrap:wrap;gap:14px;align-items:center}
.center .btn-row{justify-content:center}

/* ---------- hero ---------- */
.hero{position:relative;overflow:hidden;padding-block:clamp(72px,11vw,140px) clamp(56px,8vw,104px)}
.hero::before{
  content:"";position:absolute;inset:-30% -10% auto;height:620px;
  background:radial-gradient(60% 55% at 50% 0%,rgba(201,168,106,.15),transparent 70%);
  pointer-events:none;
}
.hero::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:1px;
  background:linear-gradient(90deg,transparent,var(--line-hi),transparent);
}
.hero__in{position:relative;max-width:860px}
.hero h1{margin-block:22px 22px}
.hero .lede{max-width:640px}
.hero .btn-row{margin-top:34px}
.hero__note{margin-top:18px;font-size:.86rem;color:var(--muted-2)}

/* ---------- cards ---------- */
.grid{display:grid;gap:20px}
.grid--3{grid-template-columns:repeat(3,1fr)}
.grid--2{grid-template-columns:repeat(2,1fr)}
@media(max-width:900px){.grid--3{grid-template-columns:1fr}.grid--2{grid-template-columns:1fr}}

.card{
  background:linear-gradient(180deg,var(--surface),var(--bg-2));
  border:1px solid var(--line);
  border-radius:var(--r);
  padding:30px 28px;
  position:relative;
  transition:border-color .22s,transform .22s;
}
.card:hover{border-color:var(--line-hi)}
.card h3{margin-bottom:12px}
.card p{color:var(--muted);font-size:.97rem}
.card ul{margin:16px 0 0;padding:0;list-style:none;display:grid;gap:9px}
.card li{color:var(--muted);font-size:.93rem;padding-left:20px;position:relative;line-height:1.5}
.card li::before{
  content:"";position:absolute;left:2px;top:.62em;
  width:6px;height:6px;border-radius:50%;background:var(--gold);opacity:.75;
}
a.card{text-decoration:none;display:block}
a.card:hover{transform:translateY(-2px)}

.icn{
  width:42px;height:42px;border-radius:11px;
  display:grid;place-items:center;margin-bottom:20px;
  background:var(--gold-dim);border:1px solid rgba(201,168,106,.24);
}
.icn svg{width:20px;height:20px;stroke:var(--gold-hi)}

/* ---------- método (passos) ---------- */
.steps{display:grid;gap:0;counter-reset:s}
.step{
  display:grid;grid-template-columns:auto 1fr;gap:24px;
  padding:28px 0;border-top:1px solid var(--line);
}
.step:last-child{border-bottom:1px solid var(--line)}
.step__n{
  font-family:var(--serif);font-size:1.05rem;color:var(--gold);
  width:42px;height:42px;border-radius:50%;flex:none;
  border:1px solid rgba(201,168,106,.3);display:grid;place-items:center;
  background:var(--gold-dim);
}
.step h3{margin-bottom:8px}
.step p{color:var(--muted);font-size:.97rem}
@media(max-width:620px){.step{grid-template-columns:1fr;gap:14px}}

/* ---------- faixa de destaque ---------- */
.band{
  border-block:1px solid var(--line);
  background:linear-gradient(180deg,var(--bg-2),var(--bg));
}

/* ---------- FAQ ---------- */
.faq{display:grid;gap:0;border-top:1px solid var(--line)}
.faq details{border-bottom:1px solid var(--line)}
.faq summary{
  cursor:pointer;list-style:none;padding:22px 40px 22px 0;position:relative;
  font-family:var(--serif);font-size:1.08rem;line-height:1.4;
}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{
  content:"";position:absolute;right:8px;top:29px;
  width:9px;height:9px;border-right:1.6px solid var(--gold);border-bottom:1.6px solid var(--gold);
  transform:rotate(45deg);transition:transform .22s;
}
.faq details[open] summary::after{transform:rotate(-135deg)}
.faq details p{padding-bottom:24px;color:var(--muted);font-size:.98rem;max-width:70ch}

/* ---------- footer ---------- */
.ftr{border-top:1px solid var(--line);background:var(--bg-2);padding-block:52px 34px}
.ftr__grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:36px}
@media(max-width:780px){.ftr__grid{grid-template-columns:1fr;gap:28px}}
.ftr h4{font-family:var(--sans);font-size:.74rem;letter-spacing:.15em;text-transform:uppercase;color:var(--muted-2);margin-bottom:14px;font-weight:600}
.ftr ul{list-style:none;margin:0;padding:0;display:grid;gap:9px}
.ftr a{color:var(--muted);text-decoration:none;font-size:.93rem}
.ftr a:hover{color:var(--gold-hi)}
.ftr__bar{
  margin-top:40px;padding-top:22px;border-top:1px solid var(--line);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:.84rem;color:var(--muted-2);
}

/* ---------- breadcrumb ---------- */
.crumb{font-size:.85rem;color:var(--muted-2);padding-top:26px}
.crumb a{color:var(--muted);text-decoration:none}
.crumb a:hover{color:var(--gold-hi)}
.crumb span{margin-inline:8px;opacity:.5}

/* ============================================================
   FERRAMENTAS / CALCULADORAS
   ============================================================ */
.calc{
  display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.05fr);gap:26px;
  align-items:start;margin-top:40px;
}
@media(max-width:940px){.calc{grid-template-columns:1fr}}

.panel{
  background:linear-gradient(180deg,var(--surface),var(--bg-2));
  border:1px solid var(--line);border-radius:var(--r);padding:28px 26px;
}
.panel--out{
  background:
    radial-gradient(90% 70% at 100% 0%,rgba(201,168,106,.09),transparent 60%),
    linear-gradient(180deg,var(--surface-2),var(--bg-2));
  border-color:var(--line-hi);
  position:sticky;top:92px;
}
@media(max-width:940px){.panel--out{position:static}}
.panel h2,.panel h3{margin-bottom:6px}
.panel__sub{color:var(--muted-2);font-size:.88rem;margin-bottom:24px}

.field{margin-bottom:20px}
.field:last-child{margin-bottom:0}
.field label{display:block;font-size:.9rem;font-weight:600;margin-bottom:7px}
.field .hint{display:block;font-size:.8rem;color:var(--muted-2);font-weight:400;margin-top:3px;line-height:1.45}
.inp{position:relative;display:flex;align-items:center}
.inp__pre,.inp__suf{
  position:absolute;color:var(--muted-2);font-size:.95rem;pointer-events:none;
}
.inp__pre{left:14px}
.inp__suf{right:14px}
.inp input{
  width:100%;background:var(--bg);border:1px solid var(--line-hi);
  border-radius:var(--r-sm);color:var(--text);
  font-family:var(--mono);font-size:1rem;padding:13px 14px;
  transition:border-color .18s,box-shadow .18s;
  -moz-appearance:textfield;
}
.inp input::-webkit-outer-spin-button,.inp input::-webkit-inner-spin-button{-webkit-appearance:none;margin:0}
.inp input:focus{outline:none;border-color:var(--gold);box-shadow:0 0 0 3px rgba(201,168,106,.14)}
.inp--pre input{padding-left:34px}
.inp--suf input{padding-right:38px}

/* saídas */
.out{border-top:1px solid var(--line);padding-top:18px;margin-top:18px}
.out:first-of-type{border-top:none;padding-top:0;margin-top:0}
.out__row{display:flex;justify-content:space-between;align-items:baseline;gap:16px;padding-block:9px}
.out__row dt{color:var(--muted);font-size:.94rem}
.out__row dd{margin:0;font-family:var(--mono);font-size:1.02rem;font-variant-numeric:tabular-nums}
.out__hero{
  border-radius:var(--r-sm);padding:22px;margin-bottom:20px;
  background:var(--gold-dim);border:1px solid rgba(201,168,106,.26);
}
.out__hero dt{font-size:.8rem;letter-spacing:.13em;text-transform:uppercase;color:var(--gold);font-weight:600}
.out__hero dd{
  margin:8px 0 0;font-family:var(--serif);font-size:clamp(2rem,5vw,2.7rem);
  color:var(--gold-hi);line-height:1.05;font-variant-numeric:tabular-nums;
}
.out__hero .sub{font-size:.86rem;color:var(--muted);margin-top:8px;font-family:var(--sans)}
dl{margin:0}

.verdict{
  margin-top:20px;padding:16px 18px;border-radius:var(--r-sm);
  border:1px solid var(--line-hi);background:var(--bg);
  font-size:.93rem;line-height:1.55;color:var(--muted);
}
.verdict b{display:block;margin-bottom:5px;font-size:.95rem}
.verdict[data-tone="ok"]{border-color:rgba(95,191,143,.35)}
.verdict[data-tone="ok"] b{color:var(--ok)}
.verdict[data-tone="warn"]{border-color:rgba(217,154,78,.35)}
.verdict[data-tone="warn"] b{color:var(--warn)}
.verdict[data-tone="bad"]{border-color:rgba(217,100,94,.35)}
.verdict[data-tone="bad"] b{color:var(--bad)}

/* barra de composição */
.bar{display:flex;height:8px;border-radius:99px;overflow:hidden;background:var(--bg);margin-top:6px}
.bar i{display:block;height:100%}

/* conteúdo longo (SEO) */
.prose{max-width:72ch}
.prose h2{margin-top:52px;margin-bottom:16px}
.prose h3{margin-top:34px;margin-bottom:10px}
.prose p{color:var(--muted);margin-bottom:16px}
.prose ul,.prose ol{color:var(--muted);padding-left:22px;margin-bottom:18px;display:grid;gap:8px}
.prose li::marker{color:var(--gold)}
.prose table{width:100%;border-collapse:collapse;margin-block:22px;font-size:.94rem}
.prose th,.prose td{text-align:left;padding:11px 12px;border-bottom:1px solid var(--line)}
.prose th{color:var(--text);font-weight:600;font-size:.82rem;letter-spacing:.06em;text-transform:uppercase}
.prose td{color:var(--muted)}
.tbl-scroll{overflow-x:auto}

/* skip link — acessibilidade */
.skip{position:absolute;left:-9999px;top:0;background:var(--gold);color:#241c0c;padding:10px 16px;border-radius:0 0 8px 0;z-index:99}
.skip:focus{left:0}

:focus-visible{outline:2px solid var(--gold);outline-offset:3px;border-radius:4px}

@media(prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important}
}