/* SILVASEG — paleta extraída da logomarca oficial
   carvão #161C20 · azul #1A4FA0 · ciano #48B2D5 · verde #6EBB52 · prata #C9D2D8 */

:root {
  --ink: #161c20;
  --ink-800: #1e262b;
  --ink-700: #2a343a;
  --blue-900: #0f2f66;
  --blue-700: #1a4fa0;
  --blue-500: #2b7fc0;
  --cyan: #48b2d5;
  --green: #6ebb52;
  --green-700: #4b9530;
  --silver: #c9d2d8;
  --paper: #f5f7f8;
  --line: #e2e8eb;
  --text: #22292e;
  --muted: #5b676f;
  --radius: 14px;
  --shadow: 0 1px 2px rgba(22, 28, 32, .06), 0 10px 30px rgba(22, 28, 32, .07);
  --wrap: 1120px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; scroll-padding-top: 84px; }

body {
  margin: 0;
  background: #fff;
  color: var(--text);
  font: 400 17px/1.65 system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; height: auto; }
a { color: var(--blue-700); }

h1, h2, h3 { line-height: 1.18; letter-spacing: -.02em; margin: 0 0 .5em; color: var(--ink); }
h1 { font-size: clamp(2rem, 5vw, 3.15rem); }
h2 { font-size: clamp(1.6rem, 3.4vw, 2.3rem); }
h3 { font-size: 1.12rem; letter-spacing: -.01em; }
p { margin: 0 0 1rem; }

.wrap { width: 100%; max-width: var(--wrap); margin: 0 auto; padding: 0 20px; }
.section { padding: 76px 0; }
.section--tint { background: var(--paper); }
.section--ink { background: var(--ink); color: #dfe6ea; }
.section--ink h2, .section--ink h3 { color: #fff; }

.eyebrow {
  display: inline-block; margin: 0 0 .8rem;
  font-size: .76rem; font-weight: 700; letter-spacing: .14em; text-transform: uppercase;
  color: var(--green-700);
}
.section--ink .eyebrow { color: var(--green); }
.lead { font-size: 1.1rem; color: var(--muted); max-width: 62ch; }
.section--ink .lead { color: #b6c2c9; }
.head { max-width: 62ch; margin-bottom: 42px; }

/* ---------- botões ---------- */
.btn {
  display: inline-flex; align-items: center; gap: .55rem;
  padding: .82rem 1.4rem; border-radius: 999px; border: 1.5px solid transparent;
  font-size: .98rem; font-weight: 650; text-decoration: none; cursor: pointer;
  transition: transform .15s ease, background-color .15s ease, border-color .15s ease;
}
.btn:hover { transform: translateY(-1px); }
.btn--primary { background: var(--green); color: #10230a; }
.btn--primary:hover { background: #7ec95f; }
.btn--blue { background: var(--blue-700); color: #fff; }
.btn--blue:hover { background: #2160b9; }
.btn--ghost { border-color: rgba(255, 255, 255, .34); color: #fff; }
.btn--ghost:hover { border-color: #fff; background: rgba(255, 255, 255, .08); }
.btn--outline { border-color: var(--line); color: var(--ink); background: #fff; }
.btn--outline:hover { border-color: var(--blue-500); color: var(--blue-700); }
.btn svg { width: 18px; height: 18px; flex: none; }

/* ---------- cabeçalho ---------- */
.hdr {
  position: sticky; top: 0; z-index: 50;
  background: rgba(22, 28, 32, .94);
  backdrop-filter: saturate(140%) blur(8px);
  border-bottom: 1px solid rgba(255, 255, 255, .08);
}
.hdr__in { display: flex; align-items: center; gap: 18px; min-height: 68px; }
.brand {
  margin-right: auto; display: flex; align-items: center; gap: 11px;
  text-decoration: none; line-height: 1;
}
.brand img { width: 44px; height: 44px; border-radius: 11px; flex: none; }
.brand b { display: block; font-size: 1.14rem; font-weight: 800; letter-spacing: .005em; color: #fff; }
.brand b i { font-style: normal; color: var(--green); margin-left: .16em; }
.brand em {
  display: block; font-style: normal; font-size: .655rem; letter-spacing: .055em;
  color: #8d9ba3; margin-top: 4px;
}

/* logomarca oficial em destaque */
.logo-plate {
  border-radius: 14px; margin-bottom: 22px;
  box-shadow: 0 8px 22px rgba(22, 28, 32, .18);
}
.nav { display: flex; align-items: center; gap: 4px; }
.nav a {
  color: #cfd8de; text-decoration: none; font-size: .93rem; font-weight: 550;
  padding: .45rem .66rem; border-radius: 8px;
}
.nav a:hover { color: #fff; background: rgba(255, 255, 255, .08); }
.hdr .btn { padding: .6rem 1.05rem; font-size: .9rem; }
.burger {
  display: none; background: none; border: 1.5px solid rgba(255, 255, 255, .28);
  border-radius: 10px; padding: .5rem .6rem; cursor: pointer;
}
.burger span { display: block; width: 20px; height: 2px; background: #fff; margin: 4px 0; border-radius: 2px; }

/* ---------- hero ---------- */
.hero {
  position: relative; color: #e7edf1; overflow: hidden;
  background:
    radial-gradient(900px 480px at 12% -10%, rgba(72, 178, 213, .26), transparent 62%),
    radial-gradient(760px 420px at 96% 8%, rgba(110, 187, 82, .18), transparent 60%),
    linear-gradient(170deg, #1b2429 0%, var(--ink) 58%, #10161a 100%);
}
.hero__in { display: grid; grid-template-columns: 1.08fr .92fr; gap: 54px; align-items: center; padding: 78px 0 84px; }
.hero h1 { color: #fff; }
.hero h1 b { color: var(--green); font-weight: inherit; }
.hero p { color: #b8c4cb; font-size: 1.12rem; max-width: 52ch; }
.hero__cta { display: flex; flex-wrap: wrap; gap: 12px; margin: 26px 0 30px; }
.hero__facts { display: flex; flex-wrap: wrap; gap: 10px 26px; font-size: .9rem; color: #9fadb5; }
.hero__facts li { list-style: none; display: flex; align-items: center; gap: .45rem; }
.hero__facts svg { width: 16px; height: 16px; color: var(--green); flex: none; }
.hero__facts ul, .hero__facts { margin: 0; padding: 0; }
.hero__art { position: relative; }
.hero__art img { border-radius: 18px; box-shadow: 0 24px 60px rgba(0, 0, 0, .45); }
.hero__badge {
  position: absolute; left: -14px; bottom: -18px;
  background: #fff; color: var(--ink); border-radius: 14px; padding: 14px 18px;
  box-shadow: 0 14px 34px rgba(0, 0, 0, .32); max-width: 250px;
}
.hero__badge strong { display: block; font-size: 1.5rem; line-height: 1.1; color: var(--blue-700); }
.hero__badge span { font-size: .84rem; color: var(--muted); }

/* ---------- faixa de NRs ---------- */
.strip { background: var(--blue-900); color: #cfe0f2; padding: 15px 0; font-size: .88rem; }
.strip ul { display: flex; flex-wrap: wrap; gap: 8px 10px; margin: 0; padding: 0; justify-content: center; }
.strip li { list-style: none; border: 1px solid rgba(255, 255, 255, .22); border-radius: 999px; padding: .2rem .7rem; }

/* ---------- grids e cartões ---------- */
.grid { display: grid; gap: 22px; }
.grid--2 { grid-template-columns: repeat(2, 1fr); }
.grid--3 { grid-template-columns: repeat(3, 1fr); }
.grid--4 { grid-template-columns: repeat(4, 1fr); }

.card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 26px; box-shadow: var(--shadow);
}
.card h3 { margin-bottom: .35rem; }
.card p { color: var(--muted); font-size: .97rem; }
.card ul { margin: 0 0 1.1rem; padding-left: 1.1rem; color: var(--muted); font-size: .96rem; }
.card ul li { margin-bottom: .3rem; }
.card--svc { display: flex; flex-direction: column; }
.card--svc .btn { align-self: flex-start; margin-top: auto; }

.ico {
  width: 44px; height: 44px; border-radius: 12px; display: grid; place-items: center;
  background: linear-gradient(140deg, var(--blue-700), var(--blue-500)); color: #fff; margin-bottom: 16px;
}
.ico svg { width: 23px; height: 23px; }
.ico--green { background: linear-gradient(140deg, var(--green-700), var(--green)); }
.ico--cyan { background: linear-gradient(140deg, #1d6f96, var(--cyan)); }

.chips { display: flex; flex-wrap: wrap; gap: 7px; margin: 0 0 1.2rem; padding: 0; }
.chips li {
  list-style: none; font-size: .83rem; font-weight: 600; color: var(--blue-900);
  background: #eaf1f8; border: 1px solid #d5e3ef; border-radius: 8px; padding: .24rem .55rem;
}

/* ---------- sobre ---------- */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 54px; align-items: center; }
.split img { border-radius: 18px; box-shadow: var(--shadow); }
.ticks { margin: 1.2rem 0 0; padding: 0; }
.ticks li { list-style: none; display: flex; gap: .7rem; margin-bottom: .7rem; font-size: 1rem; }
.ticks svg { width: 20px; height: 20px; color: var(--green-700); flex: none; margin-top: 3px; }

/* ---------- etapas ---------- */
.step { position: relative; padding-top: 6px; }
.step b {
  display: grid; place-items: center; width: 34px; height: 34px; border-radius: 50%;
  background: var(--green); color: #10230a; font-size: .95rem; margin-bottom: 12px;
}
.step h3 { font-size: 1.02rem; margin-bottom: .2rem; }
.step p { font-size: .94rem; margin: 0; color: #b6c2c9; }

/* ---------- FAQ ---------- */
.faq { max-width: 820px; }
.faq details {
  background: #fff; border: 1px solid var(--line); border-radius: 12px;
  padding: 0 20px; margin-bottom: 10px;
}
.faq summary {
  cursor: pointer; list-style: none; padding: 17px 30px 17px 0; position: relative;
  font-weight: 600; color: var(--ink);
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "+"; position: absolute; right: 0; top: 13px;
  font-size: 1.5rem; font-weight: 400; color: var(--blue-500); line-height: 1;
}
.faq details[open] summary::after { content: "–"; }
.faq details[open] { border-color: #cfdce6; }
.faq p { color: var(--muted); font-size: .97rem; margin: 0 0 18px; }

/* ---------- formulário ---------- */
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.field { display: flex; flex-direction: column; gap: .35rem; }
.field--full { grid-column: 1 / -1; }
.field label { font-size: .85rem; font-weight: 650; color: var(--ink); }
.field input, .field select, .field textarea {
  font: inherit; font-size: .97rem; color: var(--text); background: #fff;
  border: 1.5px solid var(--line); border-radius: 10px; padding: .72rem .85rem; width: 100%;
}
.field textarea { resize: vertical; min-height: 96px; }
.field input:focus, .field select:focus, .field textarea:focus {
  outline: none; border-color: var(--blue-500); box-shadow: 0 0 0 3px rgba(43, 127, 192, .16);
}
.form-note { font-size: .82rem; color: var(--muted); margin: 0; }
.hp { position: absolute; left: -9999px; }
.form-msg {
  display: none; grid-column: 1 / -1; border-radius: 10px; padding: .85rem 1rem; font-size: .95rem;
}
.form-msg.ok { display: block; background: #e8f6e1; border: 1px solid #bfe3ae; color: #2f6b18; }
.form-msg.err { display: block; background: #fdecec; border: 1px solid #f3c2c2; color: #a52222; }

/* ---------- contato ---------- */
.contact-list { margin: 0; padding: 0; }
.contact-list li { list-style: none; display: flex; gap: .85rem; margin-bottom: 18px; }
.contact-list svg { width: 20px; height: 20px; color: var(--cyan); flex: none; margin-top: 4px; }
.contact-list b { display: block; font-size: .82rem; text-transform: uppercase; letter-spacing: .08em; color: #93a2ab; font-weight: 700; }
.contact-list a { color: #fff; text-decoration: none; border-bottom: 1px solid rgba(255, 255, 255, .28); }
.contact-list a:hover { border-color: var(--green); }

.social { display: flex; gap: 10px; margin: 22px 0 0; padding: 0; }
.social a {
  width: 42px; height: 42px; border-radius: 12px; display: grid; place-items: center;
  border: 1px solid rgba(255, 255, 255, .2); color: #fff; transition: background-color .15s, border-color .15s;
}
.social a:hover { background: rgba(255, 255, 255, .1); border-color: var(--green); }
.social svg { width: 20px; height: 20px; }

.follow {
  border: 1px solid rgba(255, 255, 255, .16); border-radius: var(--radius); padding: 22px;
  background: rgba(255, 255, 255, .04); margin-top: 26px;
}
.follow h3 { font-size: 1.02rem; margin-bottom: .3rem; }
.follow p { font-size: .94rem; color: #b6c2c9; margin-bottom: 1rem; }
.follow .row { display: flex; flex-wrap: wrap; gap: 10px; }
.follow .btn { padding: .6rem 1.1rem; font-size: .9rem; }
.btn--ig { background: linear-gradient(135deg, #f9ce34, #ee2a7b 55%, #6228d7); color: #fff; }
.btn--li { background: #0a66c2; color: #fff; }

/* ---------- rodapé ---------- */
.ft { background: #10161a; color: #93a2ab; font-size: .93rem; padding: 54px 0 26px; }
.ft__grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 36px; }
.ft img { width: 220px; max-width: 100%; height: auto; border-radius: 12px; margin-bottom: 16px; }
.ft h4 { color: #fff; font-size: .82rem; text-transform: uppercase; letter-spacing: .1em; margin: 0 0 14px; }
.ft ul { margin: 0; padding: 0; }
.ft li { list-style: none; margin-bottom: .55rem; }
.ft a { color: #93a2ab; text-decoration: none; }
.ft a:hover { color: #fff; }
.ft__bar {
  margin-top: 38px; padding-top: 20px; border-top: 1px solid rgba(255, 255, 255, .09);
  display: flex; flex-wrap: wrap; gap: 10px; justify-content: space-between; font-size: .85rem;
}

/* ---------- WhatsApp flutuante ---------- */
.wa-float {
  position: fixed; right: 18px; bottom: 18px; z-index: 60;
  width: 56px; height: 56px; border-radius: 50%; background: #25d366; color: #fff;
  display: grid; place-items: center; box-shadow: 0 10px 26px rgba(0, 0, 0, .28);
}
.wa-float svg { width: 30px; height: 30px; }

/* ---------- responsivo ---------- */
@media (max-width: 960px) {
  .hero__in { grid-template-columns: 1fr; gap: 36px; padding: 56px 0 64px; }
  .hero__art { order: -1; }
  .hero__badge { display: none; }
  .split { grid-template-columns: 1fr; gap: 30px; }
  .grid--3, .grid--4 { grid-template-columns: repeat(2, 1fr); }
  .ft__grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 860px) {
  .burger { display: block; }
  .nav {
    position: absolute; inset: 68px 0 auto; flex-direction: column; align-items: stretch;
    background: var(--ink-800); border-bottom: 1px solid rgba(255, 255, 255, .1);
    padding: 12px 20px 20px; gap: 2px; display: none;
  }
  .nav.open { display: flex; }
  .nav a { padding: .7rem .6rem; font-size: 1rem; }
}

@media (max-width: 640px) {
  body { font-size: 16px; }
  .section { padding: 54px 0; }
  .grid--2, .grid--3, .grid--4, .form-grid, .ft__grid { grid-template-columns: 1fr; }
  .hdr__in .btn { display: none; }
  .card { padding: 20px; }
  .brand em { display: none; }
  .brand img { width: 40px; height: 40px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .btn:hover { transform: none; }
}