/* Tema escuro (padrão) */
:root {
  color-scheme: dark;
  --bg: #08071a;
  --surface: #121129;
  --tint: #0c0b21;
  --ink: #f3f2fa;
  --ink-2: #c6c5d8;
  --muted: #8f8ea8;
  --line: rgba(255, 255, 255, .1);
  --dark: #040312;
  --dark-2: #12112a;
  --nav-bg: rgba(8, 7, 26, .78);
  --btn-bg: #ffffff;
  --btn-fg: #0b0a1f;
  --btn-hover: #dddcea;
  --input: #1b1a36;
  --shadow: rgba(0, 0, 0, .4);
  --glow: .55;
  --c1: #1fb3dd;
  --c2: #1e11d6;
  --c3: #8800b2;
  --c4: #ff0261;
  --grad: linear-gradient(100deg, var(--c1) 0%, var(--c2) 30%, var(--c3) 62%, var(--c4) 100%);
  --radius: 20px;
  --wrap: 1200px;
  --sans: "Geist", system-ui, -apple-system, "Segoe UI", sans-serif;
  --serif: "Instrument Serif", Georgia, serif;
}

/* Tema claro */
:root[data-theme="light"] {
  color-scheme: light;
  --bg: #f6f5f9;
  --surface: #ffffff;
  --tint: #eeedf4;
  --ink: #0b0a1f;
  --ink-2: #3b3a52;
  --muted: #6c6b82;
  --line: rgba(11, 10, 31, .1);
  --dark: #07061a;
  --nav-bg: rgba(246, 245, 249, .82);
  --btn-bg: #0b0a1f;
  --btn-fg: #ffffff;
  --btn-hover: #22203f;
  --input: #f6f5f9;
  --shadow: rgba(11, 10, 31, .08);
  --glow: 1;
}
body, .nav, .pillar, .service, .tint, .section--tint, .form, .mobile-menu { transition: background-color .4s ease, color .4s ease; }

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 80px; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
h1, h2, h3, h4 { margin: 0; font-weight: 600; letter-spacing: -0.03em; line-height: 1.05; }
h2 { font-size: clamp(2rem, 4.2vw, 3.4rem); max-width: 18ch; text-wrap: balance; }
h3 { font-size: 1.3rem; letter-spacing: -0.02em; }
p { margin: 0; }
em {
  font-family: var(--serif);
  font-style: italic;
  font-weight: 400;
  letter-spacing: -0.01em;
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  padding-right: .06em;
}
.wrap { width: min(var(--wrap), 100% - 32px); margin-inline: auto; }
.muted { color: var(--muted); }
.lead { font-size: 1.25rem; color: var(--ink); line-height: 1.5; }

/* eyebrow / tags */
.eyebrow {
  display: inline-flex; align-items: center; gap: 10px;
  font-size: .78rem; font-weight: 500; letter-spacing: .14em; text-transform: uppercase;
  color: var(--muted); margin-bottom: 20px;
}
.eyebrow::before { content: ""; width: 24px; height: 2px; border-radius: 2px; background: var(--grad); }
.eyebrow--light { color: rgba(255,255,255,.6); }
.tag {
  display: inline-block; font-size: .72rem; font-weight: 500; letter-spacing: .08em; text-transform: uppercase;
  color: var(--muted);
}
.tag--dark { color: rgba(255,255,255,.55); }

/* buttons */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 14px 24px; border-radius: 999px; font-weight: 500; font-size: .98rem;
  border: 1px solid transparent; cursor: pointer; font-family: inherit;
  transition: transform .25s ease, box-shadow .25s ease, background .25s ease, color .25s;
  white-space: nowrap;
}
.btn span { transition: transform .25s ease; }
.btn:hover span { transform: translateX(3px); }
.btn--sm { padding: 10px 18px; font-size: .9rem; }
.btn--block { width: 100%; }
.btn--dark { background: var(--btn-bg); color: var(--btn-fg); }
.btn--dark:hover { background: var(--btn-hover); }
.btn--ghost { border-color: var(--line); background: transparent; }
.btn--ghost:hover { background: var(--surface); border-color: transparent; box-shadow: 0 6px 24px var(--shadow); }
.btn--grad { background: var(--grad); background-size: 140% 100%; color: #fff; }
.btn--grad:hover { background-position: 100% 0; transform: translateY(-1px); box-shadow: 0 10px 30px rgba(136,0,178,.3); }
.btn--light { background: #fff; color: var(--ink); }
.btn--light:hover { transform: translateY(-1px); }
.link { font-weight: 500; font-size: .95rem; position: relative; }
.link::after { content: ""; position: absolute; left: 0; bottom: -2px; width: 100%; height: 1px; background: currentColor; transform: scaleX(.3); transform-origin: left; transition: transform .3s; }
.link:hover::after { transform: scaleX(1); }

/* NAV */
.nav {
  position: fixed; inset: 0 0 auto; z-index: 50;
  transition: background .3s, box-shadow .3s, backdrop-filter .3s;
}
.nav.is-scrolled { background: var(--nav-bg); backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px); box-shadow: 0 1px 0 var(--line); }
.nav__inner { display: flex; align-items: center; gap: 32px; height: 72px; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 600; letter-spacing: -0.02em; font-size: 1.08rem; }
.nav__links { display: flex; gap: 28px; margin-left: auto; font-size: .93rem; color: var(--ink-2); }
.nav__links a:hover { color: var(--ink); }
.theme-toggle { width: 42px; height: 42px; border-radius: 50%; border: 1px solid var(--line); background: transparent; color: var(--ink); display: grid; place-items: center; cursor: pointer; flex: none; transition: background .3s, transform .4s ease; }
.theme-toggle:hover { background: var(--surface); }
.theme-toggle:active { transform: rotate(30deg); }
.theme-toggle svg { width: 18px; height: 18px; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
.theme-toggle .i-sun { display: block; }
.theme-toggle .i-moon { display: none; }
:root[data-theme="light"] .theme-toggle .i-sun { display: none; }
:root[data-theme="light"] .theme-toggle .i-moon { display: block; }
.nav__links + .theme-toggle { margin-left: -4px; }
.nav__toggle { display: none; width: 44px; height: 44px; border: 1px solid var(--line); background: var(--surface); border-radius: 12px; cursor: pointer; flex-direction: column; justify-content: center; align-items: center; gap: 6px; }
.nav__toggle span { width: 18px; height: 1.5px; background: var(--ink); transition: transform .3s; }
.nav__toggle[aria-expanded="true"] span:first-child { transform: translateY(3.75px) rotate(45deg); }
.nav__toggle[aria-expanded="true"] span:last-child { transform: translateY(-3.75px) rotate(-45deg); }
.mobile-menu { display: flex; flex-direction: column; gap: 4px; padding: 8px 16px 20px; background: var(--bg); border-bottom: 1px solid var(--line); }
.mobile-menu a:not(.btn) { padding: 12px 4px; font-size: 1.1rem; border-bottom: 1px solid var(--line); }
.mobile-menu .btn { margin-top: 12px; }
.mobile-menu[hidden] { display: none; }

/* HERO */
.hero { position: relative; padding: 170px 0 0; overflow: hidden; }
.hero__glow {
  position: absolute; top: -220px; right: -180px; width: 720px; height: 720px; border-radius: 50%;
  background: radial-gradient(circle at 30% 40%, rgba(31,179,221,.35), transparent 55%),
              radial-gradient(circle at 65% 55%, rgba(136,0,178,.28), transparent 55%),
              radial-gradient(circle at 50% 80%, rgba(255,2,97,.22), transparent 55%);
  filter: blur(40px); pointer-events: none; opacity: var(--glow);
  animation: float 14s ease-in-out infinite alternate;
}
@keyframes float { to { transform: translate(-60px, 40px) scale(1.08); } }
.hero__title { font-size: clamp(2.7rem, 7.4vw, 6.4rem); max-width: 14ch; letter-spacing: -0.045em; line-height: .98; position: relative; }
.hero__bottom { display: flex; justify-content: space-between; align-items: flex-end; gap: 40px; margin-top: 56px; flex-wrap: wrap; }
.hero__lead { max-width: 46ch; font-size: 1.15rem; color: var(--ink-2); }
.hero__actions { display: flex; gap: 12px; flex-wrap: wrap; }

.marquee { margin-top: 110px; border-block: 1px solid var(--line); padding: 22px 0; overflow: hidden; }
.marquee__track { display: flex; gap: 36px; width: max-content; animation: marquee 32s linear infinite; align-items: center; }
.marquee span { font-size: clamp(1.4rem, 2.6vw, 2rem); font-weight: 500; letter-spacing: -0.03em; color: var(--ink-2); }
.marquee i { font-style: normal; background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
@keyframes marquee { to { transform: translateX(-50%); } }

/* SECTIONS */
.section { padding: 130px 0; position: relative; }
.section--tint { background: var(--tint); }
.section--dark { background: var(--dark); color: #fff; overflow: hidden; }
.section__head { margin-bottom: 64px; display: grid; gap: 4px; }
.section__head .muted { max-width: 52ch; margin-top: 20px; font-size: 1.08rem; }
.section__head--row { display: flex; justify-content: space-between; align-items: flex-end; gap: 32px; flex-wrap: wrap; }

/* MANIFESTO */
.manifesto { display: grid; grid-template-columns: 1.1fr 1fr; gap: 80px; align-items: end; }
.manifesto__body { display: grid; gap: 20px; color: var(--ink-2); }
.pillars { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-top: 80px; }
.pillar { background: var(--surface); border-radius: var(--radius); padding: 32px; display: grid; gap: 6px; transition: transform .35s ease, box-shadow .35s ease; }
.pillar:hover { transform: translateY(-4px); box-shadow: 0 20px 40px var(--shadow); }
.pillar__n { font-family: var(--serif); font-style: italic; font-size: 2.6rem; line-height: 1; margin-bottom: 28px; background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; width: fit-content; }
.pillar p { color: var(--muted); }

/* CHALLENGES */
.challenges { display: grid; grid-template-columns: 1fr 1fr; gap: 80px; align-items: start; }
.challenges__head { position: sticky; top: 120px; }
.challenges__head .muted { margin-top: 24px; max-width: 40ch; }
.challenges__list { list-style: none; margin: 0; padding: 0; }
.challenges__list li { display: flex; gap: 24px; align-items: baseline; padding: 28px 0; border-bottom: 1px solid var(--line); font-size: clamp(1.1rem, 1.8vw, 1.4rem); letter-spacing: -0.02em; line-height: 1.35; }
.challenges__list li:first-child { border-top: 1px solid var(--line); }
.challenges__list span { font-size: .8rem; color: var(--muted); font-variant-numeric: tabular-nums; letter-spacing: .05em; }

/* SERVICES */
.services { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.service { background: var(--surface); border-radius: var(--radius); overflow: hidden; display: flex; flex-direction: column; transition: transform .35s ease, box-shadow .35s ease; }
.service:hover { transform: translateY(-6px); box-shadow: 0 24px 50px var(--shadow); }
.service__img { aspect-ratio: 4/3; overflow: hidden; }
.service__img img { width: 100%; height: 100%; object-fit: cover; transition: transform .8s ease; }
.service:hover .service__img img { transform: scale(1.05); }
.service__body { padding: 28px; display: grid; gap: 12px; flex: 1; align-content: start; }
.service__body p { color: var(--muted); margin-bottom: 8px; }
.service__body .link { margin-top: auto; justify-self: start; }

/* CASES */
.cases { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.case { display: grid; gap: 10px; align-content: start; }
.case__img { background: var(--surface); box-shadow: inset 0 0 0 1px var(--line); border-radius: var(--radius); overflow: hidden; aspect-ratio: 16/10; margin-bottom: 14px; }
.case__img img { width: 100%; height: 100%; object-fit: cover; transition: transform .8s ease; }
.case:hover .case__img img { transform: scale(1.04); }
.case h3 { font-size: 1.6rem; }
.case p { color: var(--muted); }

/* STEPS */
.steps { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; border-top: 1px solid var(--line); }
.step { padding: 32px 28px 0 0; display: grid; gap: 10px; align-content: start; position: relative; }
.step::before { content: ""; position: absolute; top: -1px; left: 0; width: 0; height: 2px; background: var(--grad); transition: width .8s ease; }
.step.is-in::before { width: calc(100% - 28px); }
.step__n { font-size: .8rem; color: var(--muted); letter-spacing: .05em; margin-bottom: 20px; }
.step p { color: var(--muted); }

/* REAL TECH */
.tech__glow { position: absolute; width: 700px; height: 700px; left: -200px; top: -300px; border-radius: 50%; background: radial-gradient(circle, rgba(30,17,214,.45), transparent 60%); filter: blur(60px); pointer-events: none; }
.tech__glow--alt { left: auto; right: -200px; top: auto; bottom: -350px; background: radial-gradient(circle, rgba(136,0,178,.45), rgba(255,2,97,.15) 40%, transparent 65%); }
/* REAL TECH (identidade própria: navy + ciano) */
.rt {
  --rt-bg: #040c22; --rt-card: rgba(10, 24, 56, .7); --rt-line: rgba(16, 183, 216, .16);
  --rt-cyan: #10b7d8; --rt-blue: #3b6cf6; --rt-muted: #8ea3c4;
  background: var(--rt-bg); color: #eaf6ff; overflow: hidden; isolation: isolate;
}
.rt .wrap { position: relative; }
.rt__grid-bg {
  position: absolute; inset: 0; z-index: -1; pointer-events: none;
  background-image: linear-gradient(var(--rt-line) 1px, transparent 1px), linear-gradient(90deg, var(--rt-line) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse 70% 60% at 70% 30%, #000 20%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse 70% 60% at 70% 30%, #000 20%, transparent 75%);
  opacity: .55;
}
.rt__glow { position: absolute; z-index: -1; width: 760px; height: 760px; right: -220px; top: -260px; border-radius: 50%; background: radial-gradient(circle, rgba(16,183,216,.28), rgba(44,71,154,.2) 40%, transparent 68%); filter: blur(40px); pointer-events: none; }
.rt__top { display: grid; grid-template-columns: 1.1fr .9fr; gap: 64px; align-items: center; margin-bottom: 72px; }
.rt__head { display: grid; gap: 24px; }
.rt__by { display: flex; align-items: center; gap: 14px; }
.rt__logo { height: 34px; width: auto; }
.rt__by span { font-family: "Geist Mono", ui-monospace, monospace; font-size: .78rem; color: var(--rt-muted); padding: 5px 10px; border: 1px solid var(--rt-line); border-radius: 999px; }
.rt h2 { max-width: 18ch; }
.rt__hl { background: linear-gradient(90deg, var(--rt-cyan), var(--rt-blue)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.rt__head > p { color: var(--rt-muted); font-size: 1.12rem; max-width: 52ch; }
.rt__actions { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 8px; }
.rt__btn { background: linear-gradient(90deg, var(--rt-cyan), var(--rt-blue)); color: #fff; box-shadow: 0 0 0 1px rgba(16,183,216,.4), 0 10px 40px rgba(16,183,216,.25); }
.rt__btn:hover { transform: translateY(-1px); box-shadow: 0 0 0 1px rgba(16,183,216,.6), 0 14px 50px rgba(16,183,216,.4); }
.rt__btn-ghost { border-color: var(--rt-line); color: #eaf6ff; }
.rt__btn-ghost:hover { border-color: var(--rt-cyan); color: var(--rt-cyan); }

.rt__term { background: #020817; border: 1px solid var(--rt-line); border-radius: 16px; overflow: hidden; box-shadow: 0 30px 80px rgba(0,0,0,.5), 0 0 60px rgba(16,183,216,.08); }
.rt__term-bar { display: flex; align-items: center; gap: 7px; padding: 12px 16px; border-bottom: 1px solid var(--rt-line); }
.rt__term-bar i { width: 10px; height: 10px; border-radius: 50%; background: #1c2a4a; }
.rt__term-bar span { margin-left: 10px; font: .75rem "Geist Mono", ui-monospace, monospace; color: var(--rt-muted); }
.rt__term pre { margin: 0; padding: 22px 22px 26px; font: .9rem/1.9 "Geist Mono", ui-monospace, monospace; color: #c9dbf5; white-space: pre-wrap; }
.rt__term b { color: var(--rt-cyan); font-weight: 500; }
.rt__term s { text-decoration: none; color: var(--rt-muted); }
.rt__term em { font-family: inherit; font-style: normal; background: none; color: #34d399; -webkit-text-fill-color: #34d399; padding: 0; }
.rt__term u { text-decoration: none; color: var(--rt-cyan); }
.rt__caret { display: inline-block; width: 8px; height: 1.1em; vertical-align: -3px; margin-left: 4px; background: var(--rt-cyan); animation: blink 1s steps(1) infinite; }
@keyframes blink { 50% { opacity: 0; } }

.rt__cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.rt__card { position: relative; background: var(--rt-card); border: 1px solid var(--rt-line); border-radius: var(--radius); padding: 30px; display: grid; gap: 12px; align-content: start; transition: border-color .3s, transform .35s, box-shadow .35s; backdrop-filter: blur(6px); }
.rt__card:hover { border-color: rgba(16,183,216,.5); transform: translateY(-4px); box-shadow: 0 20px 50px rgba(16,183,216,.1); }
.rt__icon { width: 44px; height: 44px; border-radius: 12px; display: grid; place-items: center; background: rgba(16,183,216,.1); border: 1px solid rgba(16,183,216,.3); color: var(--rt-cyan); margin-bottom: 10px; }
.rt__icon svg { width: 20px; height: 20px; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
.rt__label { font: .75rem "Geist Mono", ui-monospace, monospace; color: var(--rt-cyan); letter-spacing: .02em; }
.rt__card p { color: var(--rt-muted); }

.rt__stats { display: grid; grid-template-columns: repeat(3, 1fr) auto; align-items: center; margin-top: 56px; border-block: 1px solid var(--rt-line); }
.rt__stats div { padding: 30px 0; display: grid; gap: 4px; }
.rt__stats div + div { padding-left: 32px; border-left: 1px solid var(--rt-line); }
.rt__stats strong { font-size: clamp(2rem, 4vw, 3rem); font-weight: 600; letter-spacing: -0.04em; line-height: 1; }
.rt__stats span { color: var(--rt-muted); font-size: .9rem; }
.rt__more { justify-self: end; display: inline-flex; gap: 8px; align-items: center; padding: 14px 22px; border-radius: 999px; border: 1px solid rgba(16,183,216,.4); color: var(--rt-cyan); font-weight: 500; transition: background .3s, color .3s; }
.rt__more:hover { background: var(--rt-cyan); color: #04122b; }
.rt__more span { transition: transform .25s; }
.rt__more:hover span { transform: translateX(3px); }

/* TEAM */
.team { display: grid; grid-template-columns: repeat(5, 1fr); gap: 16px; }
.member { margin: 0; display: grid; gap: 14px; }
.member img { aspect-ratio: 3/4; width: 100%; object-fit: cover; border-radius: var(--radius); filter: grayscale(.85); transition: filter .5s ease, transform .5s ease; }
.member:hover img { filter: grayscale(0); transform: translateY(-4px); }
.member figcaption { display: grid; gap: 2px; }
.member strong { font-weight: 600; font-size: 1.05rem; letter-spacing: -0.01em; }
.member span { color: var(--muted); font-size: .88rem; line-height: 1.35; }

/* POSTS */
.posts { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.post { display: grid; gap: 10px; align-content: start; }
.post__img { border-radius: var(--radius); overflow: hidden; aspect-ratio: 16/10; margin-bottom: 14px; background: var(--surface); }
.post__img img { width: 100%; height: 100%; object-fit: cover; transition: transform .8s ease; }
.post:hover .post__img img { transform: scale(1.04); }
.post h3 { transition: color .3s; }
.post p { color: var(--muted); }

/* CONTACT */
.contact__grid { display: grid; grid-template-columns: 1fr 1.05fr; gap: 80px; align-items: start; position: relative; }
.contact__info { display: grid; gap: 24px; }
.contact__info > p:not(.eyebrow) { color: rgba(255,255,255,.65); font-size: 1.1rem; max-width: 44ch; }
.contact__perks { list-style: none; padding: 0; margin: 8px 0; display: grid; gap: 12px; }
.contact__perks li { display: flex; gap: 12px; align-items: center; color: rgba(255,255,255,.85); }
.contact__perks li::before { content: ""; width: 8px; height: 8px; border-radius: 50%; background: var(--grad); flex: none; }
.contact__channels { display: grid; grid-template-columns: 1.4fr 1fr; gap: 12px; margin-top: 8px; }
.contact__channels a { display: grid; gap: 2px; padding: 20px; border-radius: 16px; background: var(--dark-2); border: 1px solid rgba(255,255,255,.07); font-weight: 500; transition: border-color .3s; overflow-wrap: anywhere; font-size: .95rem; }
.contact__channels a:hover { border-color: rgba(255,255,255,.25); }
.contact__channels small { color: rgba(255,255,255,.5); font-size: .78rem; font-weight: 400; letter-spacing: .06em; text-transform: uppercase; }

.form { background: var(--surface); color: var(--ink); border: 1px solid var(--line); border-radius: 24px; padding: 36px; display: grid; gap: 16px; }
.form__row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form label { display: grid; gap: 6px; font-size: .85rem; font-weight: 500; color: var(--ink-2); }
.form input:not([type="checkbox"]), .form select, .form textarea {
  font: inherit; font-size: 1rem; color: var(--ink); background: var(--input);
  border: 1px solid transparent; border-radius: 12px; padding: 12px 14px; width: 100%;
  transition: border-color .2s, background .2s;
}
.form textarea { resize: vertical; }
.form input:focus, .form select:focus, .form textarea:focus { outline: none; border-color: var(--c3); background: var(--surface); }
.form .check { display: flex; gap: 10px; align-items: flex-start; font-weight: 400; font-size: .85rem; color: var(--muted); }
.form .check input { margin-top: 3px; accent-color: var(--c3); }
.form .check a { text-decoration: underline; }
.form__ok { background: rgba(37,211,102,.12); color: var(--ink); padding: 14px 16px; border-radius: 12px; font-size: .95rem; }

/* FOOTER */
.footer { background: var(--dark); color: rgba(255,255,255,.6); padding: 80px 0 32px; border-top: 1px solid rgba(255,255,255,.07); font-size: .94rem; }
.footer__grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr; gap: 40px; }
.footer__grid > * { display: grid; gap: 10px; align-content: start; }
.footer h4 { color: #fff; font-size: .82rem; font-weight: 500; letter-spacing: .1em; text-transform: uppercase; margin-bottom: 6px; }
.footer a:hover { color: #fff; }
.footer__logo { height: 30px; width: auto; margin-bottom: 8px; }
.social { display: flex; gap: 10px; margin-top: 8px; }
.social a { width: 40px; height: 40px; border-radius: 50%; border: 1px solid rgba(255,255,255,.14); display: grid; place-items: center; transition: background .3s, border-color .3s; }
.social a:hover { background: rgba(255,255,255,.08); border-color: rgba(255,255,255,.3); }
.social svg, .wa-float svg { width: 18px; height: 18px; fill: none; stroke: currentColor; stroke-width: 1.7; stroke-linecap: round; stroke-linejoin: round; }
.social .fill { fill: currentColor; stroke: none; }
.footer__bottom { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; margin-top: 64px; padding-top: 24px; border-top: 1px solid rgba(255,255,255,.08); font-size: .84rem; }

.wa-float { position: fixed; right: 20px; bottom: 20px; z-index: 40; width: 56px; height: 56px; border-radius: 50%; background: #25d366; color: #fff; display: grid; place-items: center; box-shadow: 0 10px 30px rgba(37,211,102,.35); transition: transform .3s; }
.wa-float:hover { transform: scale(1.08); }
.wa-float svg { width: 26px; height: 26px; stroke-width: 1.8; }

/* REVEAL */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity .9s cubic-bezier(.2,.7,.2,1), transform .9s cubic-bezier(.2,.7,.2,1); }
.reveal.is-in { opacity: 1; transform: none; }
.no-js .reveal { opacity: 1; transform: none; }

/* RESPONSIVE */
@media (max-width: 1024px) {
  .nav__links, .nav__cta { display: none; }
  .nav__toggle { display: flex; }
  .nav__links + .theme-toggle { margin-left: auto; }
  .manifesto, .challenges, .contact__grid { grid-template-columns: 1fr; gap: 48px; }
  .challenges__head { position: static; }
  .services, .cases, .posts { grid-template-columns: 1fr 1fr; }
  .rt__top { grid-template-columns: 1fr; gap: 48px; }
  .rt__cards { grid-template-columns: 1fr 1fr; }
  .rt__stats { grid-template-columns: repeat(3, 1fr); }
  .rt__more { grid-column: 1 / -1; justify-self: start; margin-bottom: 24px; }
  .steps { grid-template-columns: 1fr 1fr; row-gap: 48px; }
  .team { grid-template-columns: repeat(3, 1fr); }
  .footer__grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 680px) {
  body { font-size: 16px; }
  .section { padding: 88px 0; }
  .hero { padding-top: 130px; }
  .hero__actions, .hero__actions .btn { width: 100%; }
  .marquee { margin-top: 72px; }
  .pillars, .services, .cases, .posts, .rt__cards, .steps, .form__row, .contact__channels { grid-template-columns: 1fr; }
  .pillars { margin-top: 56px; }
  .team { grid-template-columns: 1fr 1fr; }
  .rt__stats { grid-template-columns: 1fr; }
  .rt__stats div + div { padding-left: 0; border-left: 0; border-top: 1px solid var(--rt-line); }
  .rt__term pre { font-size: .8rem; padding: 18px; }
  .rt__actions .btn { flex: 1; }
  .form { padding: 24px; }
  .footer__grid { grid-template-columns: 1fr; }
  .section__head { margin-bottom: 44px; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .reveal { opacity: 1; transform: none; }
  html { scroll-behavior: auto; }
}