:root {
  --red: #d43843;
  --red-dark: #bb2a35;
  --navy: #14243b;
  --navy-soft: #23364f;
  --cream: #f6f1e9;
  --cream-deep: #ebe4d9;
  --paper: #fffdf9;
  --ink: #17243a;
  --muted: #697384;
  --line: rgba(20, 36, 59, 0.14);
  --shadow: 0 24px 70px rgba(20, 36, 59, 0.11);
  --radius-lg: 36px;
  --radius-md: 24px;
  --radius-sm: 16px;
  --container: 1180px;
  --header-height: 84px;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 100px;
}

body {
  margin: 0;
  min-width: 320px;
  overflow-x: hidden;
  color: var(--ink);
  background: var(--cream);
  font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI",
    "Noto Sans SC", "Microsoft YaHei", sans-serif;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

body.menu-open {
  overflow: hidden;
}

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

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

button,
summary,
a {
  -webkit-tap-highlight-color: transparent;
}

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

::selection {
  color: var(--paper);
  background: var(--red);
}

:focus-visible {
  outline: 3px solid rgba(212, 56, 67, 0.42);
  outline-offset: 4px;
}

.container {
  width: min(calc(100% - 48px), var(--container));
  margin-inline: auto;
}

.skip-link {
  position: fixed;
  z-index: 999;
  top: 12px;
  left: 12px;
  padding: 10px 16px;
  color: var(--paper);
  background: var(--red);
  border-radius: 999px;
  transform: translateY(-160%);
  transition: transform 180ms ease;
}

.skip-link:focus {
  transform: translateY(0);
}

.site-header {
  position: sticky;
  z-index: 100;
  top: 0;
  height: var(--header-height);
  background: rgba(246, 241, 233, 0.88);
  border-bottom: 1px solid transparent;
  backdrop-filter: blur(18px);
  transition: height 220ms ease, border-color 220ms ease, box-shadow 220ms ease;
}

.site-header.is-scrolled {
  height: 72px;
  border-color: var(--line);
  box-shadow: 0 8px 30px rgba(20, 36, 59, 0.06);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.brand {
  display: flex;
  align-items: center;
  width: 152px;
  height: 54px;
  overflow: hidden;
}

.brand img {
  width: 152px;
  height: auto;
}

.desktop-nav {
  display: flex;
  align-items: center;
  gap: 28px;
  color: #354257;
  font-size: 14px;
  font-weight: 650;
}

.desktop-nav a {
  position: relative;
  padding: 12px 0;
}

.desktop-nav a::after {
  position: absolute;
  right: 0;
  bottom: 5px;
  left: 0;
  height: 2px;
  content: "";
  background: var(--red);
  transform: scaleX(0);
  transform-origin: right center;
  transition: transform 220ms ease;
}

.desktop-nav a:hover::after,
.desktop-nav a[aria-current="true"]::after {
  transform: scaleX(1);
  transform-origin: left center;
}

.desktop-nav .nav-contact {
  padding: 11px 17px;
  color: var(--paper);
  background: var(--red);
  border-radius: 999px;
  transition: background-color 220ms ease, transform 220ms ease;
}

.desktop-nav .nav-contact::after {
  display: none;
}

.desktop-nav .nav-contact:hover {
  background: var(--red-dark);
  transform: translateY(-1px);
}

.menu-button {
  display: none;
  width: 44px;
  height: 44px;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: 50%;
  color: var(--ink);
  background: transparent;
  cursor: pointer;
}

.menu-button span {
  display: block;
  width: 17px;
  height: 1.5px;
  margin: 5px auto;
  background: currentColor;
  transition: transform 220ms ease;
}

.menu-button[aria-expanded="true"] span:first-child {
  transform: translateY(3.25px) rotate(45deg);
}

.menu-button[aria-expanded="true"] span:last-child {
  transform: translateY(-3.25px) rotate(-45deg);
}

.mobile-nav {
  display: none;
}

.hero {
  position: relative;
  isolation: isolate;
  min-height: 760px;
  margin: 0 16px;
  overflow: hidden;
  color: var(--paper);
  background:
    radial-gradient(circle at 78% 24%, rgba(212, 56, 67, 0.22), transparent 25%),
    radial-gradient(circle at 16% 86%, rgba(75, 101, 132, 0.25), transparent 25%),
    var(--navy);
  border-radius: 0 0 42px 42px;
}

.hero::before {
  position: absolute;
  z-index: -1;
  top: -34%;
  right: -9%;
  width: 590px;
  aspect-ratio: 1;
  content: "";
  border: 1px solid rgba(246, 241, 233, 0.08);
  border-radius: 50%;
}

.hero::after {
  position: absolute;
  z-index: -1;
  right: 8%;
  bottom: -36%;
  width: 520px;
  aspect-ratio: 1;
  content: "";
  border: 1px solid rgba(246, 241, 233, 0.08);
  border-radius: 50%;
}

.hero-grid-lines {
  position: absolute;
  z-index: -2;
  inset: 0;
  opacity: 0.32;
  background-image:
    linear-gradient(rgba(246, 241, 233, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(246, 241, 233, 0.035) 1px, transparent 1px);
  background-size: 72px 72px;
  mask-image: linear-gradient(to right, black, transparent 76%);
}

.hero-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.02fr) minmax(460px, 0.98fr);
  gap: 56px;
  align-items: center;
  min-height: 760px;
  padding-block: 72px 78px;
}

.eyebrow {
  display: flex;
  align-items: center;
  gap: 11px;
  margin: 0 0 24px;
  color: var(--red);
  font-size: 13px;
  font-weight: 760;
  letter-spacing: 0.12em;
}

.eyebrow-light {
  color: rgba(255, 253, 249, 0.78);
}

.spark {
  position: relative;
  display: inline-block;
  flex: 0 0 auto;
  width: 13px;
  height: 13px;
}

.spark::before,
.spark::after {
  position: absolute;
  content: "";
  background: var(--red);
  border-radius: 99px;
}

.spark::before {
  top: 0;
  left: 5px;
  width: 3px;
  height: 13px;
}

.spark::after {
  top: 5px;
  left: 0;
  width: 13px;
  height: 3px;
}

.hero h1 {
  max-width: 690px;
  margin: 0;
  font-size: clamp(48px, 4.5vw, 64px);
  font-weight: 820;
  line-height: 1.13;
  letter-spacing: -0.052em;
}

.hero h1 span {
  display: block;
  color: #f0646d;
}

.hero-lead {
  max-width: 610px;
  margin: 28px 0 0;
  color: rgba(255, 253, 249, 0.72);
  font-size: 17px;
  line-height: 1.9;
}

.hero-actions {
  display: flex;
  gap: 12px;
  align-items: center;
  margin-top: 38px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 52px;
  padding: 0 24px;
  border: 1px solid transparent;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 720;
  transition: transform 220ms ease, background-color 220ms ease, border-color 220ms ease,
    color 220ms ease;
}

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

.button-primary {
  gap: 24px;
  color: var(--paper);
  background: var(--red);
}

.button-primary:hover {
  background: var(--red-dark);
}

.button-primary span {
  font-size: 18px;
  line-height: 1;
}

.button-ghost {
  color: rgba(255, 253, 249, 0.86);
  border-color: rgba(255, 253, 249, 0.22);
  background: rgba(255, 255, 255, 0.04);
}

.button-ghost:hover {
  border-color: rgba(255, 253, 249, 0.45);
  background: rgba(255, 255, 255, 0.08);
}

.hero-note {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 20px;
  margin: 48px 0 0;
  color: rgba(255, 253, 249, 0.52);
  font-size: 12px;
}

.hero-note span {
  display: flex;
  align-items: center;
  gap: 9px;
}

.hero-note span::before {
  width: 4px;
  height: 4px;
  content: "";
  background: var(--red);
  border-radius: 50%;
}

.system-visual {
  perspective: 1400px;
  transform: translate3d(calc(var(--mouse-x, 0) * 7px), calc(var(--mouse-y, 0) * 7px), 0);
  transition: transform 320ms ease-out;
}

.system-card {
  position: relative;
  overflow: hidden;
  background: rgba(255, 253, 249, 0.07);
  border: 1px solid rgba(255, 253, 249, 0.14);
  border-radius: 30px;
  box-shadow: 0 34px 90px rgba(0, 0, 0, 0.22);
  backdrop-filter: blur(14px);
}

.system-card::before {
  position: absolute;
  top: -90px;
  left: -90px;
  width: 230px;
  height: 230px;
  content: "";
  background: rgba(212, 56, 67, 0.2);
  border-radius: 50%;
  filter: blur(60px);
}

.system-card-head {
  position: relative;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 70px;
  padding: 0 24px;
  border-bottom: 1px solid rgba(255, 253, 249, 0.1);
}

.system-card-head p {
  margin: 0;
  font-size: 13px;
  font-weight: 700;
}

.system-status {
  display: flex;
  align-items: center;
  gap: 8px;
  color: rgba(255, 253, 249, 0.55);
  font-size: 11px;
}

.system-status i {
  width: 7px;
  height: 7px;
  background: #7fd19b;
  border-radius: 50%;
  box-shadow: 0 0 0 5px rgba(127, 209, 155, 0.1);
  animation: status-pulse 2.6s ease-in-out infinite;
}

.system-map {
  position: relative;
  width: min(100%, 500px);
  aspect-ratio: 1;
  margin-inline: auto;
}

.system-links {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  overflow: visible;
}

.system-links path {
  fill: none;
  stroke: rgba(246, 241, 233, 0.26);
  stroke-width: 1.2;
  stroke-dasharray: 6 8;
  animation: line-flow 10s linear infinite;
}

.map-orbit {
  position: absolute;
  top: 50%;
  left: 50%;
  border: 1px solid rgba(246, 241, 233, 0.08);
  border-radius: 50%;
  transform: translate(-50%, -50%);
}

.orbit-one {
  width: 52%;
  height: 52%;
}

.orbit-two {
  width: 78%;
  height: 78%;
}

.map-node {
  position: absolute;
  z-index: 3;
  display: flex;
  gap: 9px;
  align-items: center;
  min-height: 38px;
  padding: 0 12px;
  background: rgba(255, 253, 249, 0.08);
  border: 1px solid rgba(255, 253, 249, 0.13);
  border-radius: 999px;
  box-shadow: 0 10px 26px rgba(0, 0, 0, 0.12);
  backdrop-filter: blur(8px);
}

.map-node span {
  color: #f26b74;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 9px;
}

.map-node strong {
  font-size: 11px;
  font-weight: 650;
  white-space: nowrap;
}

.node-ai {
  top: 6%;
  left: 50%;
  transform: translateX(-50%);
}

.node-site {
  top: 29%;
  left: 2%;
}

.node-ads {
  top: 29%;
  right: 2%;
}

.node-facebook {
  bottom: 10%;
  left: 7%;
}

.node-conversion {
  right: 7%;
  bottom: 10%;
}

.map-core {
  position: absolute;
  z-index: 4;
  top: 50%;
  left: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 136px;
  height: 136px;
  background: var(--red);
  border: 9px solid rgba(255, 253, 249, 0.08);
  border-radius: 50%;
  box-shadow: 0 24px 48px rgba(212, 56, 67, 0.22);
  transform: translate(-50%, -50%);
}

.map-core img {
  width: 75px;
  height: auto;
}

.map-core small {
  position: absolute;
  top: calc(100% + 15px);
  left: 50%;
  color: rgba(255, 253, 249, 0.7);
  font-size: 10px;
  font-weight: 650;
  white-space: nowrap;
  letter-spacing: 0.08em;
  transform: translateX(-50%);
}

.core-halo {
  position: absolute;
  inset: -22px;
  border: 1px solid rgba(212, 56, 67, 0.4);
  border-radius: 50%;
  animation: core-breathe 3.6s ease-out infinite;
}

.system-card-foot {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 66px;
  padding: 0 24px;
  color: rgba(255, 253, 249, 0.5);
  border-top: 1px solid rgba(255, 253, 249, 0.1);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.system-card-foot i {
  width: clamp(22px, 4vw, 48px);
  height: 1px;
  margin: 0 10px;
  background: linear-gradient(to right, rgba(212, 56, 67, 0.2), var(--red));
}

.trust-strip {
  padding: 34px 0 0;
}

.trust-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-bottom: 1px solid var(--line);
}

.trust-grid article {
  display: grid;
  grid-template-columns: 42px 1fr;
  gap: 20px;
  padding: 30px 32px 34px;
  border-right: 1px solid var(--line);
}

.trust-grid article:last-child {
  border-right: 0;
}

.trust-grid article > span {
  color: var(--red);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 11px;
}

.trust-grid strong {
  display: block;
  margin-bottom: 8px;
  font-size: 15px;
}

.trust-grid p {
  margin: 0;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.65;
}

.section {
  padding-block: 132px;
}

.section-heading h2,
.connection-copy h2,
.closing-card h2 {
  margin: 0;
  font-size: clamp(38px, 4.4vw, 62px);
  font-weight: 800;
  line-height: 1.18;
  letter-spacing: -0.045em;
}

.problem-layout {
  display: grid;
  grid-template-columns: 1fr 0.9fr;
  gap: 90px;
  align-items: end;
}

.problem-copy > p {
  margin: 0 0 32px;
  color: var(--muted);
  font-size: 16px;
  line-height: 1.9;
}

.problem-tags {
  display: flex;
  flex-direction: column;
  margin: 0;
  padding: 0;
  list-style: none;
}

.problem-tags li {
  position: relative;
  padding: 15px 0 15px 26px;
  border-top: 1px solid var(--line);
  font-size: 14px;
  font-weight: 650;
}

.problem-tags li:last-child {
  border-bottom: 1px solid var(--line);
}

.problem-tags li::before {
  position: absolute;
  top: 50%;
  left: 2px;
  width: 7px;
  height: 7px;
  content: "";
  background: var(--red);
  border-radius: 50%;
  transform: translateY(-50%);
}

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

.services-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 40px;
  margin-bottom: 58px;
}

.services-heading > p {
  max-width: 420px;
  margin: 0 0 5px;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.8;
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.service-card {
  position: relative;
  display: flex;
  flex-direction: column;
  min-height: 390px;
  overflow: hidden;
  padding: 30px;
  background: var(--cream);
  border: 1px solid rgba(20, 36, 59, 0.08);
  border-radius: var(--radius-md);
  transition: transform 260ms ease, box-shadow 260ms ease, border-color 260ms ease;
}

.service-card:hover {
  border-color: rgba(212, 56, 67, 0.24);
  box-shadow: 0 22px 46px rgba(20, 36, 59, 0.09);
  transform: translateY(-6px);
}

.service-featured {
  color: var(--paper);
  background:
    radial-gradient(circle at 80% 10%, rgba(212, 56, 67, 0.28), transparent 32%),
    var(--navy);
}

.service-featured::after {
  position: absolute;
  right: -70px;
  bottom: -70px;
  width: 210px;
  height: 210px;
  content: "";
  border: 1px solid rgba(246, 241, 233, 0.12);
  border-radius: 50%;
}

.service-wide {
  grid-column: span 2;
}

.service-topline {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.service-index {
  color: var(--red);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 12px;
}

.service-signal {
  position: relative;
  width: 28px;
  height: 28px;
  border: 1px solid rgba(20, 36, 59, 0.14);
  border-radius: 50%;
}

.service-signal::before,
.service-signal::after {
  position: absolute;
  top: 50%;
  left: 50%;
  content: "";
  background: var(--red);
  transform: translate(-50%, -50%);
}

.service-signal::before {
  width: 10px;
  height: 1px;
}

.service-signal::after {
  width: 1px;
  height: 10px;
}

.service-featured .service-signal {
  border-color: rgba(255, 253, 249, 0.2);
}

.service-copy {
  margin-top: auto;
  padding-top: 72px;
}

.service-kicker {
  margin: 0 0 10px !important;
  color: var(--red) !important;
  font-size: 11px !important;
  font-weight: 760;
  letter-spacing: 0.15em;
}

.service-copy h3 {
  margin: 0;
  font-size: 26px;
  letter-spacing: -0.03em;
}

.service-copy > p {
  margin: 16px 0 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.8;
}

.service-featured .service-copy > p {
  color: rgba(255, 253, 249, 0.65);
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  margin: 24px 0 0;
  padding: 0;
  list-style: none;
}

.tag-list li {
  padding: 7px 10px;
  color: #5d6878;
  background: rgba(255, 253, 249, 0.68);
  border: 1px solid rgba(20, 36, 59, 0.08);
  border-radius: 999px;
  font-size: 10px;
  font-weight: 650;
}

.service-featured .tag-list li {
  color: rgba(255, 253, 249, 0.72);
  background: rgba(255, 255, 255, 0.05);
  border-color: rgba(255, 255, 255, 0.12);
}

.connection-section {
  margin: 16px;
  padding-block: 108px;
  color: var(--paper);
  background: var(--navy);
  border-radius: var(--radius-lg);
}

.connection-layout {
  display: grid;
  grid-template-columns: minmax(330px, 0.72fr) minmax(0, 1.28fr);
  gap: 80px;
  align-items: center;
}

.connection-copy h2 {
  font-size: clamp(36px, 3.8vw, 54px);
}

.connection-copy > p:last-child {
  max-width: 480px;
  margin: 28px 0 0;
  color: rgba(255, 253, 249, 0.58);
  font-size: 14px;
  line-height: 1.85;
}

.flow-line {
  display: flex;
  align-items: center;
  width: 100%;
  padding: 38px 28px;
  background: rgba(255, 253, 249, 0.055);
  border: 1px solid rgba(255, 253, 249, 0.1);
  border-radius: 24px;
}

.flow-item {
  flex: 0 0 auto;
  text-align: center;
}

.flow-item span {
  display: block;
  margin-bottom: 8px;
  color: #ef6a72;
  font-size: 9px;
  font-weight: 750;
  letter-spacing: 0.12em;
}

.flow-item strong {
  font-size: 11px;
  font-weight: 650;
  white-space: nowrap;
}

.flow-line > i {
  position: relative;
  flex: 1 1 44px;
  min-width: 20px;
  height: 1px;
  margin: 0 8px;
  background: rgba(246, 241, 233, 0.18);
}

.flow-line > i::after {
  position: absolute;
  top: -2px;
  right: 0;
  width: 5px;
  height: 5px;
  content: "";
  background: var(--red);
  border-radius: 50%;
}

.process-heading {
  max-width: 760px;
  margin-bottom: 58px;
}

.process-list {
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line);
  list-style: none;
}

.process-list li {
  display: grid;
  grid-template-columns: 110px 1fr;
  padding: 38px 0;
  border-bottom: 1px solid var(--line);
}

.process-number {
  color: var(--red);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 12px;
}

.process-content {
  display: grid;
  grid-template-columns: 0.68fr 1fr 1.2fr;
  gap: 32px;
  align-items: center;
}

.process-content p,
.process-content h3,
.process-content span {
  margin: 0;
}

.process-content p {
  color: var(--red);
  font-size: 12px;
  font-weight: 720;
  letter-spacing: 0.1em;
}

.process-content h3 {
  font-size: 24px;
  letter-spacing: -0.025em;
}

.process-content span {
  color: var(--muted);
  font-size: 14px;
  line-height: 1.75;
}

.principles-section {
  padding-top: 0;
}

.principles-layout {
  display: grid;
  grid-template-columns: 0.82fr 1.18fr;
  gap: 56px;
  align-items: stretch;
}

.principles-panel {
  position: relative;
  display: flex;
  min-height: 590px;
  overflow: hidden;
  padding: 50px;
  color: var(--paper);
  background:
    radial-gradient(circle at 92% 10%, rgba(212, 56, 67, 0.35), transparent 34%),
    var(--navy);
  border-radius: 30px;
}

.principles-copy {
  position: relative;
  z-index: 2;
  align-self: end;
}

.principles-copy h2 {
  max-width: 520px;
  margin: 0;
  font-size: clamp(40px, 4vw, 58px);
  line-height: 1.2;
  letter-spacing: -0.045em;
}

.principles-copy > p:last-child {
  max-width: 480px;
  margin: 26px 0 0;
  color: rgba(255, 253, 249, 0.6);
  font-size: 14px;
  line-height: 1.85;
}

.principles-brand {
  position: absolute;
  top: 40px;
  right: 28px;
  width: 176px;
  opacity: 0.09;
  transform: rotate(-5deg);
}

.principles-list {
  display: flex;
  flex-direction: column;
  border-top: 1px solid var(--line);
}

.principles-list article {
  display: grid;
  grid-template-columns: 56px 1fr;
  gap: 24px;
  flex: 1 1 0;
  padding: 28px 4px;
  border-bottom: 1px solid var(--line);
}

.principles-list article > span {
  color: var(--red);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 11px;
}

.principles-list h3 {
  margin: 0 0 10px;
  font-size: 21px;
}

.principles-list p {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.75;
}

.fit-section {
  background: var(--cream-deep);
}

.fit-layout {
  display: grid;
  grid-template-columns: 0.75fr 1.25fr;
  gap: 80px;
  align-items: start;
}

.fit-layout .section-heading > p:last-child {
  max-width: 470px;
  margin: 26px 0 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.8;
}

.fit-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

.fit-grid article {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  min-height: 230px;
  padding: 28px;
  background: rgba(255, 253, 249, 0.62);
  border: 1px solid rgba(20, 36, 59, 0.08);
  border-radius: 22px;
  transition: background-color 240ms ease, transform 240ms ease;
}

.fit-grid article:hover {
  background: var(--paper);
  transform: translateY(-4px);
}

.fit-grid span {
  align-self: flex-end;
  color: var(--red);
  font-size: 24px;
}

.fit-grid p {
  max-width: 290px;
  margin: 0;
  font-size: 18px;
  font-weight: 700;
  line-height: 1.55;
  letter-spacing: -0.015em;
}

.faq-layout {
  display: grid;
  grid-template-columns: 0.78fr 1.22fr;
  gap: 90px;
  align-items: start;
}

.faq-heading {
  position: sticky;
  top: 112px;
}

.faq-list {
  border-top: 1px solid var(--line);
}

.faq-list details {
  border-bottom: 1px solid var(--line);
}

.faq-list summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 92px;
  cursor: pointer;
  list-style: none;
  font-size: 18px;
  font-weight: 700;
}

.faq-list summary::-webkit-details-marker {
  display: none;
}

.faq-list summary i {
  position: relative;
  flex: 0 0 auto;
  width: 30px;
  height: 30px;
  border: 1px solid var(--line);
  border-radius: 50%;
}

.faq-list summary i::before,
.faq-list summary i::after {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 10px;
  height: 1px;
  content: "";
  background: var(--red);
  transform: translate(-50%, -50%);
  transition: transform 220ms ease;
}

.faq-list summary i::after {
  transform: translate(-50%, -50%) rotate(90deg);
}

.faq-list details[open] summary i::after {
  transform: translate(-50%, -50%) rotate(0);
}

.faq-list details > p {
  max-width: 670px;
  margin: -4px 58px 30px 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.85;
}

.closing-section {
  padding: 0 16px 16px;
}

.closing-card {
  position: relative;
  isolation: isolate;
  display: flex;
  flex-direction: column;
  align-items: center;
  min-height: 620px;
  overflow: hidden;
  padding: 104px 24px;
  color: var(--paper);
  text-align: center;
  background:
    radial-gradient(circle at 18% 14%, rgba(212, 56, 67, 0.36), transparent 25%),
    radial-gradient(circle at 86% 96%, rgba(80, 110, 145, 0.3), transparent 28%),
    var(--navy);
  border-radius: var(--radius-lg);
}

.closing-card::before,
.closing-card::after {
  position: absolute;
  z-index: -1;
  width: 380px;
  height: 380px;
  content: "";
  border: 1px solid rgba(246, 241, 233, 0.08);
  border-radius: 50%;
}

.closing-card::before {
  top: -210px;
  left: -80px;
}

.closing-card::after {
  right: -70px;
  bottom: -230px;
}

.closing-card h2 {
  max-width: 980px;
}

.closing-card > p:not(.eyebrow) {
  margin: 24px 0 34px;
  color: rgba(255, 253, 249, 0.6);
  font-size: 15px;
}

.contact-actions {
  display: flex;
  gap: 12px;
  align-items: center;
  justify-content: center;
}

.button-contact-secondary {
  gap: 20px;
  color: rgba(255, 253, 249, 0.9);
  background: rgba(255, 255, 255, 0.045);
  border-color: rgba(255, 253, 249, 0.24);
  cursor: pointer;
}

.button-contact-secondary:hover {
  background: rgba(255, 255, 255, 0.09);
  border-color: rgba(255, 253, 249, 0.42);
}

.button-contact-secondary.is-copied {
  border-color: rgba(127, 209, 155, 0.52);
}

.copy-status {
  min-width: 34px;
  padding-left: 14px;
  color: rgba(255, 253, 249, 0.54);
  border-left: 1px solid rgba(255, 253, 249, 0.16);
  font-size: 11px;
  font-weight: 650;
}

.button-contact-secondary.is-copied .copy-status {
  color: #9be4b3;
}

.contact-details {
  display: grid;
  grid-template-columns: 1fr 1fr;
  width: min(100%, 610px);
  margin-top: 42px;
  border-top: 1px solid rgba(255, 253, 249, 0.13);
  border-bottom: 1px solid rgba(255, 253, 249, 0.13);
}

.contact-details > * {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: 72px;
  padding: 0 20px;
}

.contact-details > * + * {
  border-left: 1px solid rgba(255, 253, 249, 0.13);
}

.contact-details small {
  color: rgba(255, 253, 249, 0.46);
  font-size: 10px;
  letter-spacing: 0.06em;
}

.contact-details strong {
  color: rgba(255, 253, 249, 0.86);
  font-size: 12px;
  font-weight: 650;
}

.contact-details a:hover strong {
  color: var(--paper);
}

.closing-mark {
  position: absolute;
  top: 50%;
  left: 50%;
  z-index: -1;
  width: 430px;
  opacity: 0.035;
  transform: translate(-50%, -50%);
}

.site-footer {
  padding: 44px 0 50px;
}

.footer-inner {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  color: #586577;
  font-size: 12px;
}

.footer-brand {
  display: block;
  width: 120px;
}

.footer-brand img {
  width: 100%;
  height: auto;
}

.footer-inner p {
  margin: 0;
}

.copyright {
  justify-self: end;
}

.js [data-reveal] {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 720ms cubic-bezier(0.16, 1, 0.3, 1),
    transform 720ms cubic-bezier(0.16, 1, 0.3, 1);
}

.js [data-reveal][data-delay="1"] {
  transition-delay: 90ms;
}

.js [data-reveal][data-delay="2"] {
  transition-delay: 180ms;
}

.js [data-reveal][data-delay="3"] {
  transition-delay: 270ms;
}

.js [data-reveal][data-delay="4"] {
  transition-delay: 360ms;
}

.js [data-reveal].is-visible {
  opacity: 1;
  transform: translateY(0);
}

@keyframes status-pulse {
  0%,
  100% {
    box-shadow: 0 0 0 4px rgba(127, 209, 155, 0.08);
  }
  50% {
    box-shadow: 0 0 0 8px rgba(127, 209, 155, 0.02);
  }
}

@keyframes line-flow {
  to {
    stroke-dashoffset: -140;
  }
}

@keyframes core-breathe {
  0% {
    opacity: 0.75;
    transform: scale(0.92);
  }
  70%,
  100% {
    opacity: 0;
    transform: scale(1.18);
  }
}

@media (max-width: 1080px) {
  .hero-layout {
    grid-template-columns: 0.92fr 1.08fr;
    gap: 32px;
  }

  .hero h1 {
    font-size: clamp(44px, 6vw, 62px);
  }

  .map-node strong {
    font-size: 10px;
  }

  .connection-layout {
    grid-template-columns: 1fr;
  }

  .flow-line {
    max-width: 760px;
  }

  .principles-layout,
  .faq-layout {
    gap: 42px;
  }
}

@media (max-width: 900px) {
  :root {
    --header-height: 74px;
  }

  .container {
    width: min(calc(100% - 36px), var(--container));
  }

  .desktop-nav {
    display: none;
  }

  .menu-button {
    display: block;
  }

  .mobile-nav {
    position: fixed;
    z-index: 90;
    top: var(--header-height);
    right: 0;
    left: 0;
    display: flex;
    flex-direction: column;
    gap: 0;
    padding: 12px 18px 28px;
    visibility: hidden;
    background: rgba(246, 241, 233, 0.98);
    border-bottom: 1px solid var(--line);
    box-shadow: 0 24px 50px rgba(20, 36, 59, 0.12);
    opacity: 0;
    transform: translateY(-14px);
    pointer-events: none;
    transition: opacity 220ms ease, transform 220ms ease, visibility 220ms ease;
  }

  .mobile-nav.is-open {
    visibility: visible;
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
  }

  .mobile-nav a {
    padding: 18px 4px;
    border-bottom: 1px solid var(--line);
    font-size: 18px;
    font-weight: 700;
  }

  .mobile-nav .nav-contact {
    color: var(--red);
  }

  .hero {
    min-height: auto;
    margin: 0 10px;
    border-radius: 0 0 30px 30px;
  }

  .hero-layout {
    grid-template-columns: 1fr;
    min-height: auto;
    padding-block: 80px 46px;
  }

  .hero-copy {
    max-width: 690px;
  }

  .system-visual {
    width: min(100%, 600px);
    margin: 32px auto 0;
  }

  .trust-grid {
    grid-template-columns: 1fr;
  }

  .trust-grid article {
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .trust-grid article:last-child {
    border-bottom: 0;
  }

  .section {
    padding-block: 96px;
  }

  .problem-layout,
  .fit-layout,
  .faq-layout {
    grid-template-columns: 1fr;
    gap: 46px;
  }

  .services-grid {
    grid-template-columns: 1fr 1fr;
  }

  .service-featured,
  .service-wide {
    grid-column: span 2;
  }

  .service-featured {
    min-height: 410px;
  }

  .process-content {
    grid-template-columns: 0.8fr 1fr;
  }

  .process-content span {
    grid-column: 1 / -1;
  }

  .principles-layout {
    grid-template-columns: 1fr;
  }

  .principles-panel {
    min-height: 520px;
  }

  .faq-heading {
    position: static;
  }
}

@media (max-width: 640px) {
  .container {
    width: min(calc(100% - 32px), var(--container));
  }

  .brand,
  .brand img {
    width: 132px;
  }

  .hero-layout {
    padding-block: 64px 28px;
  }

  .hero h1 {
    font-size: clamp(40px, 12vw, 54px);
    line-height: 1.16;
  }

  .hero-lead {
    font-size: 15px;
    line-height: 1.82;
  }

  .hero-actions {
    flex-direction: column;
    align-items: stretch;
    margin-top: 30px;
  }

  .button {
    width: 100%;
  }

  .hero-note {
    flex-direction: column;
    gap: 9px;
    margin-top: 34px;
  }

  .system-card-head,
  .system-card-foot {
    padding-inline: 16px;
  }

  .system-map {
    transform: scale(0.95);
  }

  .map-node {
    min-height: 34px;
    padding: 0 9px;
  }

  .map-node strong {
    font-size: 9px;
  }

  .map-node span {
    display: none;
  }

  .map-core {
    width: 112px;
    height: 112px;
  }

  .map-core img {
    width: 62px;
  }

  .trust-strip {
    padding-top: 20px;
  }

  .trust-grid article {
    padding: 24px 2px;
  }

  .section {
    padding-block: 82px;
  }

  .section-heading h2,
  .connection-copy h2,
  .closing-card h2 {
    font-size: clamp(34px, 10vw, 46px);
  }

  .services-heading {
    display: block;
    margin-bottom: 38px;
  }

  .services-heading > p {
    margin-top: 22px;
  }

  .services-grid {
    grid-template-columns: 1fr;
  }

  .service-card,
  .service-featured,
  .service-wide {
    grid-column: auto;
    min-height: 350px;
    padding: 26px;
  }

  .connection-section {
    margin: 10px;
    padding-block: 78px;
    border-radius: 28px;
  }

  .connection-layout {
    gap: 44px;
  }

  .flow-line {
    position: relative;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 18px 24px;
  }

  .flow-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    min-height: 76px;
    text-align: left;
  }

  .flow-item span {
    margin: 0;
  }

  .flow-line > i {
    flex: 0 0 1px;
    width: 100%;
    min-width: auto;
    margin: 0;
  }

  .flow-line > i::after {
    right: auto;
    left: 0;
  }

  .process-heading {
    margin-bottom: 38px;
  }

  .process-list li {
    grid-template-columns: 52px 1fr;
    padding: 30px 0;
  }

  .process-content {
    grid-template-columns: 1fr;
    gap: 9px;
  }

  .process-content span {
    grid-column: auto;
    margin-top: 8px;
  }

  .principles-panel {
    min-height: 500px;
    padding: 34px 28px;
    border-radius: 26px;
  }

  .principles-copy h2 {
    font-size: clamp(36px, 10vw, 48px);
  }

  .principles-list article {
    grid-template-columns: 42px 1fr;
    gap: 14px;
  }

  .fit-grid {
    grid-template-columns: 1fr;
  }

  .fit-grid article {
    min-height: 190px;
  }

  .faq-list summary {
    min-height: 82px;
    font-size: 16px;
  }

  .closing-section {
    padding-inline: 10px;
  }

  .closing-card {
    min-height: 620px;
    padding-inline: 22px;
    border-radius: 28px;
  }

  .contact-actions {
    flex-direction: column;
    width: 100%;
  }

  .contact-actions .button {
    width: min(100%, 300px);
  }

  .contact-details {
    grid-template-columns: 1fr;
    width: min(100%, 300px);
    margin-top: 34px;
  }

  .contact-details > * + * {
    border-top: 1px solid rgba(255, 253, 249, 0.13);
    border-left: 0;
  }

  .footer-inner {
    grid-template-columns: 1fr auto;
    gap: 20px;
  }

  .footer-inner > p:nth-child(2) {
    grid-column: 1 / -1;
    grid-row: 2;
  }
}

@media (max-width: 350px) {
  .closing-card {
    padding-inline: 14px;
  }

  .closing-card h2 {
    font-size: 30px;
  }

  .button-contact-secondary {
    gap: 10px;
    font-size: 13px;
  }

  .copy-status {
    padding-left: 10px;
  }

  .contact-details > * {
    padding-inline: 12px;
  }
}

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

  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

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