/* ==========================================================================
   OMNILINK — Enterprise Design System
   Tecnologia e Comunicação LTDA
   --------------------------------------------------------------------------
   1. Fonts
   2. Tokens
   3. Reset & Base
   4. Layout primitives
   5. Typography
   6. Buttons & Forms
   7. Header / Navigation
   8. Hero
   9. Sections
  10. Footer
  11. Motion & Utilities
  12. Responsive
   ========================================================================== */

/* 1. FONTS ================================================================= */

@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 100 900;
  font-display: swap;
  src: url('../fonts/inter-latin-var.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA,
    U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193,
    U+2212, U+2215, U+FEFF, U+FFFD;
}

/* 2. TOKENS ================================================================ */

:root {
  /* Brand */
  --brand: #1656f0;
  --brand-strong: #0d40c4;
  --brand-soft: #5b8cff;
  --accent: #2fc2d4;

  /* Dark surfaces */
  --ink-900: #05070c;
  --ink-850: #070b13;
  --ink-800: #0a0f1a;
  --ink-700: #101728;
  --ink-600: #182134;

  /* Light surfaces */
  --paper: #ffffff;
  --paper-alt: #f5f8fc;
  --paper-deep: #eef2f8;

  /* Text */
  --text: #080d18;
  --text-2: #545e75;
  --text-3: #7b8499;
  --text-inv: #f4f7fc;
  --text-inv-2: #9aa7bf;
  --text-inv-3: #6d7a92;

  /* Lines */
  --line: #e2e8f1;
  --line-strong: #cfd8e6;
  --line-dark: rgba(255, 255, 255, 0.09);
  --line-dark-strong: rgba(255, 255, 255, 0.16);

  /* Type */
  --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto,
    Helvetica, Arial, sans-serif;
  --mono: ui-monospace, SFMono-Regular, 'SF Mono', Menlo, Consolas,
    'Liberation Mono', monospace;

  /* Space */
  --container: 1240px;
  --gutter: clamp(1.25rem, 4vw, 2.5rem);
  --section-y: clamp(4.5rem, 8vw, 8.75rem);
  --radius-s: 8px;
  --radius: 14px;
  --radius-l: 22px;

  /* Effects */
  --shadow-s: 0 1px 2px rgba(8, 13, 24, 0.05), 0 2px 8px rgba(8, 13, 24, 0.04);
  --shadow-m: 0 4px 12px rgba(8, 13, 24, 0.06), 0 16px 40px rgba(8, 13, 24, 0.08);
  --shadow-l: 0 24px 70px rgba(8, 13, 24, 0.14);
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);

  --header-h: 76px;
}

/* 3. RESET & BASE ========================================================== */

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 16px);
}

body {
  margin: 0;
  font-family: var(--font);
  font-size: 1.0625rem;
  line-height: 1.65;
  color: var(--text);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
  font-feature-settings: 'cv05' 1, 'ss03' 1;
}

img,
svg,
picture {
  max-width: 100%;
  display: block;
}

a {
  color: inherit;
  text-decoration: none;
}

button,
input,
textarea,
select {
  font: inherit;
  color: inherit;
}

ul,
ol {
  margin: 0;
  padding: 0;
  list-style: none;
}

h1,
h2,
h3,
h4,
p {
  margin: 0;
}

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

.section--dark :focus-visible,
.site-header--transparent :focus-visible,
.site-footer :focus-visible {
  outline-color: var(--brand-soft);
}

::selection {
  background: rgba(22, 86, 240, 0.18);
}

.skip-link {
  position: absolute;
  left: 50%;
  top: 0;
  transform: translate(-50%, -140%);
  z-index: 200;
  background: var(--brand);
  color: #fff;
  padding: 0.75rem 1.25rem;
  border-radius: 0 0 10px 10px;
  font-size: 0.9rem;
  font-weight: 500;
  transition: transform 0.2s var(--ease);
}

.skip-link:focus {
  transform: translate(-50%, 0);
}

/* 4. LAYOUT PRIMITIVES ===================================================== */

.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.section {
  position: relative;
  padding-block: var(--section-y);
}

.section--alt {
  background: var(--paper-alt);
}

.section--dark {
  background: var(--ink-900);
  color: var(--text-inv);
}

.section--dark h2,
.section--dark h3 {
  color: var(--text-inv);
}

.section--dark p {
  color: var(--text-inv-2);
}

.section-head {
  max-width: 760px;
  margin-bottom: clamp(2.5rem, 5vw, 4rem);
}

.section-head--center {
  margin-inline: auto;
  text-align: center;
}

.grid {
  display: grid;
  gap: clamp(1rem, 2vw, 1.5rem);
}

/* 5. TYPOGRAPHY ============================================================ */

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--brand);
  font-weight: 500;
  margin-bottom: 1.1rem;
}

.eyebrow::before {
  content: '';
  width: 26px;
  height: 1px;
  background: currentColor;
  opacity: 0.6;
}

.section--dark .eyebrow,
.hero .eyebrow {
  color: var(--accent);
}

h1,
.h1 {
  font-size: clamp(2.35rem, 1.3rem + 3.9vw, 4.35rem);
  line-height: 1.04;
  letter-spacing: -0.033em;
  font-weight: 600;
}

h2,
.h2 {
  font-size: clamp(1.85rem, 1.2rem + 2.2vw, 3rem);
  line-height: 1.12;
  letter-spacing: -0.028em;
  font-weight: 600;
}

h3,
.h3 {
  font-size: 1.1875rem;
  line-height: 1.35;
  letter-spacing: -0.015em;
  font-weight: 600;
}

.lead {
  font-size: clamp(1.05rem, 0.98rem + 0.35vw, 1.25rem);
  line-height: 1.6;
  color: var(--text-2);
  margin-top: 1.25rem;
}

.section--dark .lead {
  color: var(--text-inv-2);
}

.text-gradient {
  background: linear-gradient(96deg, var(--brand-soft) 0%, var(--accent) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* 6. BUTTONS & FORMS ======================================================= */

.btn {
  --btn-bg: var(--brand);
  --btn-fg: #fff;
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  min-height: 50px;
  padding: 0.85rem 1.6rem;
  border: 1px solid transparent;
  border-radius: 10px;
  background: var(--btn-bg);
  color: var(--btn-fg);
  font-size: 0.9375rem;
  font-weight: 500;
  letter-spacing: -0.01em;
  cursor: pointer;
  white-space: nowrap;
  transition: transform 0.25s var(--ease), box-shadow 0.25s var(--ease),
    background-color 0.25s var(--ease), border-color 0.25s var(--ease),
    color 0.25s var(--ease);
}

.btn:hover {
  transform: translateY(-2px);
}

.btn:active {
  transform: translateY(0);
}

.btn--primary {
  box-shadow: 0 6px 18px rgba(22, 86, 240, 0.28);
}

.btn--primary:hover {
  background: var(--brand-strong);
  box-shadow: 0 12px 30px rgba(22, 86, 240, 0.34);
}

.btn--ghost {
  --btn-bg: transparent;
  --btn-fg: var(--text);
  border-color: var(--line-strong);
}

.btn--ghost:hover {
  border-color: var(--text);
  background: rgba(8, 13, 24, 0.03);
}

.btn--ghost-inv {
  --btn-bg: transparent;
  --btn-fg: var(--text-inv);
  border-color: var(--line-dark-strong);
}

.btn--ghost-inv:hover {
  border-color: rgba(255, 255, 255, 0.4);
  background: rgba(255, 255, 255, 0.06);
}

.btn--light {
  --btn-bg: #fff;
  --btn-fg: var(--ink-900);
}

.btn--light:hover {
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.22);
}

.btn--sm {
  min-height: 42px;
  padding: 0.5rem 1.1rem;
  font-size: 0.875rem;
}

.btn__arrow {
  width: 16px;
  height: 16px;
  flex: none;
  transition: transform 0.3s var(--ease-out);
}

.btn:hover .btn__arrow {
  transform: translateX(4px);
}

.btn-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.875rem;
  margin-top: 2.25rem;
}

.link-arrow {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--brand);
}

.link-arrow svg {
  width: 15px;
  height: 15px;
  transition: transform 0.3s var(--ease-out);
}

.link-arrow:hover svg {
  transform: translateX(4px);
}

/* 7. HEADER =============================================================== */

.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  height: var(--header-h);
  display: flex;
  align-items: center;
  border-bottom: 1px solid transparent;
  transition: background-color 0.35s var(--ease), border-color 0.35s var(--ease),
    backdrop-filter 0.35s var(--ease), box-shadow 0.35s var(--ease);
}

.site-header__inner {
  display: flex;
  align-items: center;
  gap: clamp(1rem, 3vw, 2.75rem);
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.wordmark {
  display: inline-flex;
  align-items: baseline;
  gap: 0.1em;
  font-size: 1.0625rem;
  font-weight: 600;
  letter-spacing: 0.17em;
  color: var(--text-inv);
  transition: color 0.35s var(--ease);
  flex: none;
}

.wordmark span {
  color: var(--accent);
}

.site-nav {
  display: flex;
  align-items: center;
  gap: clamp(0.5rem, 1.6vw, 1.75rem);
  margin-inline-end: auto;
}

.site-nav a {
  position: relative;
  font-size: 0.9rem;
  font-weight: 450;
  color: rgba(255, 255, 255, 0.74);
  padding: 0.4rem 0;
  transition: color 0.25s var(--ease);
}

/* The nav CTA exists only for the mobile panel */
.site-nav .btn {
  display: none;
}

.site-nav a::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -2px;
  height: 1.5px;
  width: 100%;
  background: linear-gradient(90deg, var(--brand-soft), var(--accent));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.32s var(--ease-out);
}

.site-nav a:hover,
.site-nav a[aria-current='true'] {
  color: #fff;
}

.site-nav a:hover::after,
.site-nav a[aria-current='true']::after {
  transform: scaleX(1);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: clamp(0.75rem, 1.6vw, 1.25rem);
  flex: none;
}

/* Language switch */
.lang-switch {
  display: inline-flex;
  align-items: center;
  gap: 2px;
  padding: 3px;
  border: 1px solid var(--line-dark-strong);
  border-radius: 8px;
  transition: border-color 0.35s var(--ease);
}

.lang-switch button {
  border: 0;
  background: transparent;
  color: rgba(255, 255, 255, 0.6);
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  padding: 0.3rem 0.5rem;
  border-radius: 5px;
  cursor: pointer;
  transition: color 0.25s var(--ease), background-color 0.25s var(--ease);
}

.lang-switch button:hover {
  color: #fff;
}

.lang-switch button[aria-pressed='true'] {
  background: rgba(255, 255, 255, 0.12);
  color: #fff;
}

/* Solid header state */
.site-header--solid {
  background: rgba(255, 255, 255, 0.86);
  backdrop-filter: saturate(180%) blur(18px);
  -webkit-backdrop-filter: saturate(180%) blur(18px);
  border-bottom-color: var(--line);
  box-shadow: 0 1px 24px rgba(8, 13, 24, 0.06);
}

.site-header--solid .wordmark {
  color: var(--text);
}

.site-header--solid .site-nav a {
  color: var(--text-2);
}

.site-header--solid .site-nav a:hover,
.site-header--solid .site-nav a[aria-current='true'] {
  color: var(--text);
}

.site-header--solid .lang-switch {
  border-color: var(--line-strong);
}

.site-header--solid .lang-switch button {
  color: var(--text-3);
}

.site-header--solid .lang-switch button:hover {
  color: var(--text);
}

.site-header--solid .lang-switch button[aria-pressed='true'] {
  background: var(--paper-deep);
  color: var(--text);
}

.site-header--solid .nav-toggle span {
  background: var(--text);
}

/* Pages that never sit on a dark hero */
.site-header--static {
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: saturate(180%) blur(18px);
  -webkit-backdrop-filter: saturate(180%) blur(18px);
  border-bottom-color: var(--line);
}

/* Mobile toggle */
.nav-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border: 1px solid var(--line-dark-strong);
  border-radius: 9px;
  background: transparent;
  cursor: pointer;
  position: relative;
  flex: none;
}

.site-header--solid .nav-toggle {
  border-color: var(--line-strong);
}

.nav-toggle span {
  position: absolute;
  left: 50%;
  width: 17px;
  height: 1.5px;
  background: #fff;
  border-radius: 2px;
  transform: translateX(-50%);
  transition: transform 0.3s var(--ease-out), opacity 0.2s linear,
    background-color 0.35s var(--ease);
}

.nav-toggle span:nth-child(1) {
  top: 15px;
}
.nav-toggle span:nth-child(2) {
  top: 20px;
}
.nav-toggle span:nth-child(3) {
  top: 25px;
}

.nav-toggle[aria-expanded='true'] span:nth-child(1) {
  transform: translateX(-50%) translateY(5px) rotate(45deg);
}
.nav-toggle[aria-expanded='true'] span:nth-child(2) {
  opacity: 0;
}
.nav-toggle[aria-expanded='true'] span:nth-child(3) {
  transform: translateX(-50%) translateY(-5px) rotate(-45deg);
}

body.nav-open {
  overflow: hidden;
}

/* 8. HERO ================================================================== */

.hero {
  position: relative;
  background: var(--ink-900);
  color: var(--text-inv);
  padding-top: calc(var(--header-h) + clamp(3.5rem, 7vw, 6.5rem));
  padding-bottom: clamp(3.5rem, 7vw, 6rem);
  overflow: hidden;
  isolation: isolate;
}

.hero__bg {
  position: absolute;
  inset: 0;
  z-index: -2;
  background-image: linear-gradient(
      to right,
      rgba(255, 255, 255, 0.035) 1px,
      transparent 1px
    ),
    linear-gradient(to bottom, rgba(255, 255, 255, 0.035) 1px, transparent 1px);
  background-size: 72px 72px;
  mask-image: radial-gradient(120% 90% at 70% 10%, #000 20%, transparent 78%);
  -webkit-mask-image: radial-gradient(
    120% 90% at 70% 10%,
    #000 20%,
    transparent 78%
  );
}

.hero__glow {
  position: absolute;
  z-index: -1;
  border-radius: 50%;
  filter: blur(90px);
  pointer-events: none;
}

.hero__glow--a {
  width: 46vw;
  height: 46vw;
  max-width: 620px;
  max-height: 620px;
  top: -14%;
  right: -6%;
  background: radial-gradient(circle, rgba(22, 86, 240, 0.4), transparent 68%);
}

.hero__glow--b {
  width: 34vw;
  height: 34vw;
  max-width: 460px;
  max-height: 460px;
  bottom: -18%;
  left: -8%;
  background: radial-gradient(circle, rgba(47, 194, 212, 0.18), transparent 70%);
}

.hero__inner {
  display: grid;
  grid-template-columns: minmax(0, 1.02fr) minmax(0, 0.98fr);
  gap: clamp(2.5rem, 5vw, 4.5rem);
  align-items: center;
}

.hero h1 {
  color: #fff;
  max-width: 15ch;
}

.hero__sub {
  margin-top: 1.6rem;
  max-width: 52ch;
  font-size: clamp(1.02rem, 0.96rem + 0.34vw, 1.19rem);
  color: var(--text-inv-2);
  line-height: 1.62;
}

.hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.75rem;
  margin-top: 2.5rem;
  padding-top: 1.75rem;
  border-top: 1px solid var(--line-dark);
}

.hero__meta li {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  font-size: 0.8125rem;
  color: var(--text-inv-3);
  font-family: var(--mono);
  letter-spacing: 0.04em;
}

.hero__meta li::before {
  content: '';
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 3px rgba(47, 194, 212, 0.14);
  flex: none;
}

/* Hero diagram */
.hero__visual {
  position: relative;
}

.diagram {
  position: relative;
  border: 1px solid var(--line-dark);
  border-radius: var(--radius-l);
  background: linear-gradient(
    165deg,
    rgba(24, 33, 52, 0.92) 0%,
    rgba(7, 11, 19, 0.92) 62%
  );
  box-shadow: 0 40px 90px rgba(0, 0, 0, 0.5);
  overflow: hidden;
}

.diagram__bar {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  padding: 0.85rem 1.1rem;
  border-bottom: 1px solid var(--line-dark);
  background: rgba(255, 255, 255, 0.02);
}

.diagram__dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.16);
}

.diagram__label {
  margin-left: auto;
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--text-inv-3);
}

.diagram__body {
  padding: clamp(1.1rem, 2.4vw, 1.75rem);
}

.diagram svg {
  width: 100%;
  height: auto;
}

.node-rect {
  fill: rgba(255, 255, 255, 0.035);
  stroke: rgba(255, 255, 255, 0.12);
}

.node-rect--accent {
  fill: rgba(22, 86, 240, 0.16);
  stroke: rgba(91, 140, 255, 0.5);
}

.node-text {
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.11em;
  fill: #cfd9ec;
  text-transform: uppercase;
}

.node-text--dim {
  fill: #7f8ca6;
  font-size: 9px;
}

.flow-line {
  stroke: rgba(255, 255, 255, 0.16);
  stroke-width: 1.25;
  fill: none;
}

.flow-line--live {
  stroke: url(#omniFlow);
  stroke-width: 1.6;
  stroke-dasharray: 5 9;
  animation: flow 2.6s linear infinite;
}

@keyframes flow {
  to {
    stroke-dashoffset: -28;
  }
}

.pulse-node {
  fill: var(--accent);
  animation: pulse 2.8s ease-in-out infinite;
  transform-box: fill-box;
  transform-origin: center;
}

.pulse-node:nth-of-type(2n) {
  animation-delay: 0.9s;
}
.pulse-node:nth-of-type(3n) {
  animation-delay: 1.6s;
}

@keyframes pulse {
  0%,
  100% {
    opacity: 0.35;
  }
  50% {
    opacity: 1;
  }
}

/* Trust / pillar strip */
.strip {
  background: var(--ink-850);
  border-top: 1px solid var(--line-dark);
  border-bottom: 1px solid var(--line-dark);
  padding-block: clamp(2rem, 4vw, 3rem);
  color: var(--text-inv);
}

.strip__grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: clamp(1.25rem, 3vw, 2.5rem);
}

.strip__item h3 {
  font-size: 0.95rem;
  font-weight: 550;
  color: #fff;
  margin-bottom: 0.35rem;
}

.strip__item p {
  font-size: 0.875rem;
  color: var(--text-inv-3);
  line-height: 1.55;
}

.strip__num {
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.18em;
  color: var(--accent);
  display: block;
  margin-bottom: 0.7rem;
}

/* 9. SECTIONS ============================================================== */

/* About */
.about__grid {
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
  gap: clamp(2rem, 6vw, 5rem);
  align-items: start;
}

.about__body p + p {
  margin-top: 1.15rem;
}

.about__body p {
  color: var(--text-2);
}

.about__points {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.5rem 2rem;
  margin-top: 2.75rem;
  padding-top: 2.25rem;
  border-top: 1px solid var(--line);
}

.about__points h3 {
  font-size: 0.95rem;
  margin-bottom: 0.3rem;
}

.about__points p {
  font-size: 0.9rem;
  color: var(--text-2);
  line-height: 1.55;
}

/* Cards */
.cards {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(1rem, 1.6vw, 1.375rem);
}

.card {
  position: relative;
  display: flex;
  flex-direction: column;
  padding: clamp(1.5rem, 2.4vw, 2rem);
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: transform 0.4s var(--ease-out), box-shadow 0.4s var(--ease-out),
    border-color 0.4s var(--ease-out);
  overflow: hidden;
}

.card::before {
  content: '';
  position: absolute;
  inset: 0 0 auto 0;
  height: 2px;
  background: linear-gradient(90deg, var(--brand), var(--accent));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.45s var(--ease-out);
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-m);
  border-color: var(--line-strong);
}

.card:hover::before {
  transform: scaleX(1);
}

.card__icon {
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  border-radius: 11px;
  background: linear-gradient(
    150deg,
    rgba(22, 86, 240, 0.1),
    rgba(47, 194, 212, 0.1)
  );
  border: 1px solid rgba(22, 86, 240, 0.14);
  margin-bottom: 1.35rem;
  flex: none;
}

.card__icon svg {
  width: 21px;
  height: 21px;
  stroke: var(--brand);
  fill: none;
  stroke-width: 1.5;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.card h3 {
  margin-bottom: 0.6rem;
}

.card p {
  font-size: 0.9375rem;
  color: var(--text-2);
  line-height: 1.6;
}

.card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-top: 1.35rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--line);
}

.card__tags span {
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.06em;
  color: var(--text-3);
  background: var(--paper-alt);
  border: 1px solid var(--line);
  border-radius: 5px;
  padding: 0.2rem 0.5rem;
}

/* Process */
.process {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  background: var(--line-dark);
  border: 1px solid var(--line-dark);
  border-radius: var(--radius);
  overflow: hidden;
}

.process__step {
  position: relative;
  background: var(--ink-900);
  padding: clamp(1.5rem, 2.4vw, 2.1rem);
  transition: background-color 0.4s var(--ease);
}

.process__step:hover {
  background: var(--ink-700);
}

.process__step::after {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  width: 2px;
  height: 100%;
  background: linear-gradient(180deg, var(--brand), var(--accent));
  transform: scaleY(0);
  transform-origin: top;
  transition: transform 0.45s var(--ease-out);
}

.process__step:hover::after {
  transform: scaleY(1);
}

.process__num {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.2em;
  color: var(--accent);
  display: block;
  margin-bottom: 1.5rem;
}

.process__step h3 {
  font-size: 1.05rem;
  color: #fff;
  margin-bottom: 0.55rem;
}

.process__step p {
  font-size: 0.9rem;
  color: var(--text-inv-3);
  line-height: 1.6;
}

.engineering__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: clamp(2rem, 5vw, 4.5rem);
  align-items: center;
  margin-bottom: clamp(2.75rem, 5vw, 4.25rem);
}

.quote-block {
  border-left: 2px solid;
  border-image: linear-gradient(180deg, var(--brand), var(--accent)) 1;
  padding-left: 1.5rem;
}

.quote-block p {
  font-size: clamp(1rem, 0.95rem + 0.3vw, 1.15rem);
  color: var(--text-inv-2);
  line-height: 1.6;
}

/* Architecture */
.arch {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  gap: clamp(2rem, 5vw, 4rem);
  align-items: center;
}

.arch-stack {
  background: var(--ink-900);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-l);
  padding: clamp(1.25rem, 2.6vw, 2rem);
  box-shadow: var(--shadow-l);
  position: relative;
  overflow: hidden;
}

.arch-stack::before {
  content: '';
  position: absolute;
  width: 320px;
  height: 320px;
  right: -110px;
  top: -140px;
  background: radial-gradient(circle, rgba(22, 86, 240, 0.35), transparent 68%);
  filter: blur(50px);
  pointer-events: none;
}

.arch-stack__label {
  display: block;
  position: relative;
  font-family: var(--mono);
  font-size: 0.66rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text-inv-3);
  margin-bottom: 1.15rem;
}

.arch-layer {
  position: relative;
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0.95rem 1.1rem;
  border: 1px solid var(--line-dark);
  border-radius: 11px;
  background: rgba(255, 255, 255, 0.028);
  transition: border-color 0.35s var(--ease), background-color 0.35s var(--ease),
    transform 0.35s var(--ease-out);
}

.arch-layer:hover {
  border-color: rgba(91, 140, 255, 0.42);
  background: rgba(22, 86, 240, 0.09);
  transform: translateX(4px);
}

.arch-layer__idx {
  font-family: var(--mono);
  font-size: 0.66rem;
  letter-spacing: 0.14em;
  color: var(--text-inv-3);
  flex: none;
  width: 26px;
}

.arch-layer__name {
  font-size: 0.9375rem;
  font-weight: 550;
  color: #fff;
  letter-spacing: -0.01em;
}

.arch-layer__desc {
  font-size: 0.8125rem;
  color: var(--text-inv-3);
  margin-top: 0.1rem;
  line-height: 1.5;
}

.arch-connector {
  height: 22px;
  margin-left: 42px;
  border-left: 1px dashed rgba(255, 255, 255, 0.18);
  position: relative;
}

.arch-connector::after {
  content: '';
  position: absolute;
  left: -3px;
  bottom: 0;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--accent);
  opacity: 0.75;
}

.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 2.25rem;
}

.chip {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.8125rem;
  font-weight: 450;
  color: var(--text-2);
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 100px;
  padding: 0.45rem 0.95rem;
  transition: border-color 0.3s var(--ease), color 0.3s var(--ease),
    transform 0.3s var(--ease-out);
}

.chip::before {
  content: '';
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--brand);
  opacity: 0.7;
}

.chip:hover {
  border-color: var(--brand);
  color: var(--text);
  transform: translateY(-2px);
}

/* Why — feature list */
/* Six-column track so the five items always fill their rows exactly
   (3 + 2) and no empty cell exposes the hairline background. */
.why {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}

.why__item {
  grid-column: span 2;
  background: var(--paper);
  padding: clamp(1.6rem, 2.6vw, 2.25rem);
  transition: background-color 0.35s var(--ease);
}

.why__item:nth-child(4),
.why__item:nth-child(5) {
  grid-column: span 3;
}

.why__item:hover {
  background: var(--paper-alt);
}

.why__item .why__icon {
  width: 34px;
  height: 34px;
  stroke: var(--brand);
  fill: none;
  stroke-width: 1.4;
  stroke-linecap: round;
  stroke-linejoin: round;
  margin-bottom: 1.25rem;
}

.why__item h3 {
  margin-bottom: 0.55rem;
}

.why__item p {
  font-size: 0.9375rem;
  color: var(--text-2);
  line-height: 1.6;
}

/* CTA band */
.cta-band {
  position: relative;
  background: var(--ink-900);
  color: var(--text-inv);
  overflow: hidden;
  isolation: isolate;
}

.cta-band::before {
  content: '';
  position: absolute;
  inset: 0;
  z-index: -1;
  background: radial-gradient(
      70% 120% at 15% 0%,
      rgba(22, 86, 240, 0.36),
      transparent 62%
    ),
    radial-gradient(60% 110% at 92% 100%, rgba(47, 194, 212, 0.2), transparent 60%);
}

.cta-band::after {
  content: '';
  position: absolute;
  inset: 0;
  z-index: -1;
  background-image: linear-gradient(
      to right,
      rgba(255, 255, 255, 0.04) 1px,
      transparent 1px
    ),
    linear-gradient(to bottom, rgba(255, 255, 255, 0.04) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: linear-gradient(180deg, transparent, #000 40%, transparent);
  -webkit-mask-image: linear-gradient(180deg, transparent, #000 40%, transparent);
}

.cta-band__inner {
  max-width: 780px;
  text-align: center;
  margin-inline: auto;
}

.cta-band h2 {
  color: #fff;
  letter-spacing: -0.03em;
}

.cta-band .lead {
  margin-inline: auto;
  max-width: 56ch;
}

.cta-band .btn-row {
  justify-content: center;
}

/* Contact */
.contact__grid {
  display: grid;
  grid-template-columns: minmax(0, 0.82fr) minmax(0, 1.18fr);
  gap: clamp(2rem, 5vw, 4.5rem);
  align-items: start;
}

.contact__info dl {
  margin: 2.25rem 0 0;
  display: grid;
  gap: 1.5rem;
}

.contact__info dt {
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text-3);
  margin-bottom: 0.4rem;
}

.contact__info dd {
  margin: 0;
  font-size: 0.9875rem;
  color: var(--text);
  line-height: 1.6;
}

.contact__info dd a {
  border-bottom: 1px solid transparent;
  transition: border-color 0.25s var(--ease), color 0.25s var(--ease);
}

.contact__info dd a:hover {
  color: var(--brand);
  border-bottom-color: currentColor;
}

.form {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius-l);
  padding: clamp(1.5rem, 3vw, 2.5rem);
  box-shadow: var(--shadow-s);
}

.section--alt .form {
  box-shadow: var(--shadow-m);
}

.form__grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.1rem;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}

.field--full {
  grid-column: 1 / -1;
}

.field label {
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--text-2);
  letter-spacing: 0.005em;
}

.field label .req {
  color: var(--brand);
}

.field input,
.field select,
.field textarea {
  width: 100%;
  padding: 0.8rem 0.95rem;
  background: var(--paper-alt);
  border: 1px solid var(--line);
  border-radius: 9px;
  font-size: 0.9375rem;
  transition: border-color 0.25s var(--ease), background-color 0.25s var(--ease),
    box-shadow 0.25s var(--ease);
  appearance: none;
}

.field textarea {
  min-height: 128px;
  resize: vertical;
  line-height: 1.6;
}

.field select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 12 8' fill='none' stroke='%23545e75' stroke-width='1.5' stroke-linecap='round'%3E%3Cpath d='M1 1.5 6 6.5 11 1.5'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.95rem center;
  background-size: 11px;
  padding-right: 2.4rem;
  cursor: pointer;
}

.field input:focus,
.field select:focus,
.field textarea:focus {
  outline: none;
  background: var(--paper);
  border-color: var(--brand);
  box-shadow: 0 0 0 3px rgba(22, 86, 240, 0.13);
}

.field input::placeholder,
.field textarea::placeholder {
  color: var(--text-3);
  opacity: 0.75;
}

.field .error {
  font-size: 0.78rem;
  color: #cc2f3d;
  min-height: 0;
  display: none;
}

.field[data-invalid='true'] input,
.field[data-invalid='true'] select,
.field[data-invalid='true'] textarea {
  border-color: #d8404e;
  background: #fff6f6;
}

.field[data-invalid='true'] .error {
  display: block;
}

.form__footer {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-top: 1.6rem;
}

.form__note {
  font-size: 0.78rem;
  color: var(--text-3);
  max-width: 42ch;
  line-height: 1.5;
}

.form__note a {
  color: var(--brand);
}

.form-status {
  display: none;
  align-items: flex-start;
  gap: 0.7rem;
  margin-top: 1.25rem;
  padding: 0.9rem 1.1rem;
  border-radius: 10px;
  font-size: 0.875rem;
  line-height: 1.55;
}

.form-status[data-state='success'] {
  display: flex;
  background: #eefaf3;
  border: 1px solid #b9e6ce;
  color: #14603c;
}

.form-status[data-state='error'] {
  display: flex;
  background: #fdf1f2;
  border: 1px solid #f3c4c9;
  color: #96202c;
}

.form-status svg {
  width: 17px;
  height: 17px;
  flex: none;
  margin-top: 2px;
  stroke: currentColor;
  fill: none;
  stroke-width: 1.7;
}

.btn[data-loading='true'] {
  pointer-events: none;
  opacity: 0.72;
}

.btn[data-loading='true'] .btn__arrow {
  animation: spin 0.7s linear infinite;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

/* 10. FOOTER =============================================================== */

.site-footer {
  background: var(--ink-900);
  color: var(--text-inv-2);
  padding-top: clamp(3.5rem, 6vw, 5.5rem);
  border-top: 1px solid var(--line-dark);
}

.site-footer__top {
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) repeat(3, minmax(0, 1fr));
  gap: clamp(2rem, 4vw, 3.5rem);
  padding-bottom: clamp(2.5rem, 4vw, 3.5rem);
}

.site-footer .wordmark {
  color: #fff;
  font-size: 1.15rem;
}

.site-footer__blurb {
  margin-top: 1.15rem;
  font-size: 0.9rem;
  line-height: 1.65;
  color: var(--text-inv-3);
  max-width: 38ch;
}

.footer-col h3 {
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text-inv-3);
  font-weight: 500;
  margin-bottom: 1.15rem;
}

.footer-col ul {
  display: grid;
  gap: 0.7rem;
}

.footer-col a {
  font-size: 0.9rem;
  color: var(--text-inv-2);
  transition: color 0.25s var(--ease);
}

.footer-col a:hover {
  color: #fff;
}

.footer-legal {
  border-top: 1px solid var(--line-dark);
  padding-block: 1.75rem;
  font-size: 0.8125rem;
  color: var(--text-inv-3);
  line-height: 1.7;
}

.footer-legal__corp {
  display: grid;
  gap: 0.35rem;
  padding-bottom: 1.5rem;
}

.footer-legal__corp strong {
  color: var(--text-inv-2);
  font-weight: 550;
}

.footer-bottom {
  border-top: 1px solid var(--line-dark);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  padding-block: 1.5rem;
  font-size: 0.8125rem;
  color: var(--text-inv-3);
}

.footer-bottom nav {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
}

.footer-bottom a:hover {
  color: #fff;
}

/* 11. MOTION & UTILITIES =================================================== */

[data-reveal] {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 0.7s var(--ease-out), transform 0.7s var(--ease-out);
  will-change: opacity, transform;
}

[data-reveal].is-visible {
  opacity: 1;
  transform: none;
  will-change: auto;
}

[data-reveal][data-delay='1'] {
  transition-delay: 0.08s;
}
[data-reveal][data-delay='2'] {
  transition-delay: 0.16s;
}
[data-reveal][data-delay='3'] {
  transition-delay: 0.24s;
}
[data-reveal][data-delay='4'] {
  transition-delay: 0.32s;
}
[data-reveal][data-delay='5'] {
  transition-delay: 0.4s;
}

.visually-hidden {
  position: absolute !important;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

.hp-field {
  position: absolute !important;
  left: -9999px;
  opacity: 0;
  pointer-events: none;
}

/* Legal / content pages */
.page-hero {
  padding-top: calc(var(--header-h) + clamp(3rem, 6vw, 5rem));
  padding-bottom: clamp(2rem, 4vw, 3rem);
  border-bottom: 1px solid var(--line);
  background: var(--paper-alt);
}

.page-hero h1 {
  font-size: clamp(2rem, 1.4rem + 2.4vw, 3.2rem);
  max-width: 20ch;
}

.page-hero .lead {
  max-width: 62ch;
}

.legal {
  max-width: 780px;
  padding-block: clamp(3rem, 6vw, 5rem);
}

.legal h2 {
  font-size: 1.35rem;
  margin-top: 2.75rem;
  margin-bottom: 0.85rem;
  letter-spacing: -0.02em;
}

.legal h2:first-of-type {
  margin-top: 0;
}

.legal h3 {
  font-size: 1rem;
  margin-top: 1.75rem;
  margin-bottom: 0.5rem;
}

.legal p,
.legal li {
  color: var(--text-2);
  font-size: 0.9875rem;
  line-height: 1.7;
}

.legal p + p {
  margin-top: 0.9rem;
}

.legal ul {
  list-style: none;
  margin: 0.9rem 0 0;
  display: grid;
  gap: 0.55rem;
}

.legal ul li {
  position: relative;
  padding-left: 1.15rem;
}

.legal ul li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.62em;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--brand);
  opacity: 0.6;
}

.legal__meta {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-3);
  padding-bottom: 2rem;
  margin-bottom: 2.5rem;
  border-bottom: 1px solid var(--line);
}

.legal__box {
  margin-top: 2.5rem;
  padding: 1.5rem 1.75rem;
  background: var(--paper-alt);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.legal__box p {
  font-size: 0.9rem;
}

/* Language visibility (long-form content blocks) */
html[lang='pt-BR'] [data-lang-block='en'],
html[lang='en'] [data-lang-block='pt'] {
  display: none;
}

/* 12. RESPONSIVE =========================================================== */

@media (max-width: 1080px) {
  .hero__inner {
    grid-template-columns: 1fr;
    gap: clamp(2.5rem, 6vw, 3.5rem);
  }

  .hero h1 {
    max-width: 18ch;
  }

  .cards {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .process {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .arch,
  .about__grid,
  .contact__grid,
  .engineering__grid {
    grid-template-columns: 1fr;
  }

  .strip__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .why {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .why__item,
  .why__item:nth-child(4) {
    grid-column: span 1;
  }

  .why__item:nth-child(5) {
    grid-column: span 2;
  }

  .site-footer__top {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 900px) {
  .site-nav {
    position: fixed;
    inset: var(--header-h) 0 auto 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: rgba(5, 7, 12, 0.97);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--line-dark);
    padding: 0.5rem var(--gutter) 1.75rem;
    max-height: calc(100dvh - var(--header-h));
    overflow-y: auto;
    transform: translateY(-8px);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: opacity 0.28s var(--ease), transform 0.32s var(--ease-out),
      visibility 0.28s;
    margin: 0;
  }

  .site-nav[data-open='true'] {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
    pointer-events: auto;
  }

  .site-nav a {
    color: rgba(255, 255, 255, 0.82);
    font-size: 1.02rem;
    padding: 1rem 0;
    border-bottom: 1px solid var(--line-dark);
  }

  .site-nav a::after {
    display: none;
  }

  .site-nav .btn {
    display: inline-flex;
    margin-top: 1.5rem;
    width: 100%;
  }

  .nav-toggle {
    display: block;
    order: 3;
  }

  .header-actions .btn--primary {
    display: none;
  }

  .site-header--solid .site-nav a {
    color: rgba(255, 255, 255, 0.82);
  }
}

@media (max-width: 720px) {
  :root {
    --header-h: 66px;
  }

  .cards,
  .process,
  .strip__grid,
  .about__points,
  .form__grid,
  .why {
    grid-template-columns: 1fr;
  }

  .why__item,
  .why__item:nth-child(4),
  .why__item:nth-child(5) {
    grid-column: span 1;
  }

  .about__points {
    gap: 1.35rem;
  }

  .btn-row .btn {
    width: 100%;
  }

  .hero__meta {
    gap: 0.55rem 1.25rem;
  }

  .site-footer__top {
    grid-template-columns: 1fr;
    gap: 2.25rem;
  }

  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
  }

  .form__footer {
    flex-direction: column;
    align-items: stretch;
  }

  .form__footer .btn {
    width: 100%;
    order: -1;
  }
}

@media (min-width: 1800px) {
  :root {
    --container: 1400px;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }

  [data-reveal] {
    opacity: 1;
    transform: none;
  }
}

@media print {
  .site-header,
  .site-footer,
  .cta-band,
  .nav-toggle {
    display: none !important;
  }

  body {
    color: #000;
    background: #fff;
  }
}