/* fralda.net — folha de estilo única. Sem fontes externas, sem imagens externas. */
:root{
  --ink:#22303c;
  --ink-soft:#54626f;
  --bg:#fdfcf9;
  --teal:#0e7c6b;
  --teal-dark:#0a5b4f;
  --apricot:#f4a261;
  --apricot-soft:#fdeeda;
  --mist:#e9f4f1;
  --line:#e5e0d8;
  --card:#ffffff;
  --radius:14px;
  --display:"Iowan Old Style","Palatino Linotype",Palatino,Georgia,serif;
  --body:system-ui,-apple-system,"Segoe UI",Roboto,Ubuntu,sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important}}
body{font-family:var(--body);color:var(--ink);background:var(--bg);line-height:1.65;font-size:1.0625rem}
.wrap{max-width:1040px;margin:0 auto;padding:0 20px}
/* Links em texto corrido são sublinhados: a cor sozinha não os distingue
   (teal sobre --ink dá contraste 2,55:1, abaixo do mínimo de 3:1 da WCAG). */
a{color:var(--teal);text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:2px}
a:hover{text-decoration-thickness:2px}
/* Blocos de navegação: o próprio contexto (menu, lista, cartão, botão)
   já identifica o link, então o sublinhado fica só no hover. */
.logo,nav a,.breadcrumb a,.linklist a,.regua a,.card .mais,.btn,footer a{text-decoration:none}
.logo:hover,.breadcrumb a:hover,.linklist a:hover,.card .mais:hover,footer a:hover{text-decoration:underline}
a:focus-visible,button:focus-visible{outline:3px solid var(--apricot);outline-offset:2px;border-radius:4px}

/* Cabeçalho */
header{background:var(--card);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:10}
.topbar{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:14px 0;flex-wrap:wrap}
.logo{font-family:var(--display);font-size:1.5rem;font-weight:700;color:var(--ink);letter-spacing:-.01em}
.logo .dot{color:var(--teal)}
nav ul{display:flex;gap:4px;list-style:none;flex-wrap:wrap}
nav a{display:block;padding:8px 12px;border-radius:8px;color:var(--ink-soft);font-size:.95rem;font-weight:500}
nav a:hover{background:var(--mist);color:var(--teal-dark);text-decoration:none}
nav a[aria-current="page"]{background:var(--mist);color:var(--teal-dark)}

/* Herói */
.hero{padding:56px 0 40px}
.eyebrow{display:inline-block;font-size:.8rem;font-weight:700;letter-spacing:.12em;text-transform:uppercase;color:var(--teal);background:var(--mist);padding:5px 12px;border-radius:999px;margin-bottom:16px}
h1{font-family:var(--display);font-size:clamp(1.9rem,4.5vw,3rem);line-height:1.15;letter-spacing:-.015em;margin-bottom:16px;max-width:22ch}
.lede{font-size:1.15rem;color:var(--ink-soft);max-width:62ch;margin-bottom:8px}

/* Régua de tamanhos — elemento assinatura */
.regua{margin:36px 0 8px;border:1px solid var(--line);border-radius:var(--radius);background:var(--card);overflow:hidden}
.regua-titulo{font-size:.8rem;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--ink-soft);padding:12px 16px;border-bottom:1px solid var(--line)}
.regua-track{display:flex;flex-wrap:wrap}
.regua a{flex:1 1 110px;display:block;text-align:center;padding:14px 8px;border-right:1px solid var(--line);color:var(--ink);position:relative}
.regua a:last-child{border-right:0}
.regua a:hover{background:var(--apricot-soft);text-decoration:none}
.regua b{display:block;font-family:var(--display);font-size:1.35rem}
.regua span{display:block;font-size:.78rem;color:var(--ink-soft)}
.regua a::after{content:"";position:absolute;left:0;bottom:0;height:4px;width:100%;background:linear-gradient(90deg,var(--mist),var(--teal))}

/* Seções e cartões */
section{padding:36px 0}
h2{font-family:var(--display);font-size:clamp(1.4rem,3vw,1.9rem);letter-spacing:-.01em;margin-bottom:8px}
h3{font-size:1.1rem;margin:20px 0 6px}
.sub{color:var(--ink-soft);margin-bottom:20px;max-width:64ch}
.grid{display:grid;gap:16px;grid-template-columns:repeat(auto-fill,minmax(230px,1fr))}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:20px;display:flex;flex-direction:column;gap:6px}
.card h3{margin:0;font-family:var(--display);font-size:1.2rem}
.card p{font-size:.94rem;color:var(--ink-soft);flex:1}
.card .mais{font-weight:600;font-size:.92rem}
.card:hover{border-color:var(--teal)}

/* Conteúdo de artigo */
article{max-width:720px}
article p{margin-bottom:16px}
article ul,article ol{margin:0 0 16px 24px}
article li{margin-bottom:6px}
article h2{margin-top:36px}
table{width:100%;border-collapse:collapse;margin:20px 0;font-size:.95rem;background:var(--card)}
caption{text-align:left;font-weight:600;padding:8px 0;color:var(--ink-soft);font-size:.88rem}
th,td{border:1px solid var(--line);padding:10px 12px;text-align:left}
th{background:var(--mist);font-weight:600}
tbody tr:nth-child(even){background:#faf9f6}
.destaque{background:var(--apricot-soft);border:1px solid var(--apricot);border-radius:var(--radius);padding:16px 20px;margin:20px 0}
.destaque strong{color:var(--teal-dark)}

/* Listas de links (hubs) */
.linklist{columns:2;gap:32px;list-style:none;margin:12px 0 0}
.linklist li{margin-bottom:8px;break-inside:avoid}
.linklist a{font-weight:500}
@media (max-width:640px){.linklist{columns:1}}

/* Trilha de navegação */
.breadcrumb{font-size:.85rem;color:var(--ink-soft);padding:16px 0 0}
.breadcrumb a{color:var(--ink-soft)}
.breadcrumb span{margin:0 6px;color:var(--line)}

/* Botões */
.btn{display:inline-block;background:var(--teal);color:#fff;font-weight:600;padding:12px 22px;border-radius:10px;border:0;font-size:1rem;cursor:pointer}
.btn:hover{background:var(--teal-dark);text-decoration:none}
.btn-claro{background:var(--mist);color:var(--teal-dark)}
.btn-claro:hover{background:#dcebe7}

/* Calculadora */
.calc{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:24px;max-width:520px}
.calc label{display:block;font-weight:600;margin:14px 0 6px}
.calc input,.calc select{width:100%;padding:11px 12px;border:1px solid var(--line);border-radius:8px;font-size:1rem;font-family:var(--body);background:var(--bg)}
.calc .resultado{margin-top:18px;padding:16px;border-radius:10px;background:var(--mist);display:none}
.calc .resultado.on{display:block}
.calc .resultado b{font-family:var(--display);font-size:1.3rem;color:var(--teal-dark)}

/* Rodapé */
footer{border-top:1px solid var(--line);margin-top:48px;padding:36px 0;background:var(--card)}
.foot-grid{display:grid;gap:28px;grid-template-columns:repeat(auto-fit,minmax(180px,1fr))}
footer h3{font-size:.8rem;text-transform:uppercase;letter-spacing:.1em;color:var(--ink-soft);margin:0 0 10px;font-weight:600}
footer ul{list-style:none}
footer li{margin-bottom:6px}
footer a{color:var(--ink);font-size:.92rem}
.foot-base{margin-top:28px;padding-top:16px;border-top:1px solid var(--line);font-size:.85rem;color:var(--ink-soft);display:flex;justify-content:space-between;flex-wrap:wrap;gap:8px}