:root {
  --navy-950: #07172e;
  --navy-900: #0b2347;
  --navy-800: #0b2a5b;
  --blue-700: #0d4e9c;
  --blue-600: #1269c7;
  --blue-500: #2c84df;
  --ice-100: #edf5ff;
  --ice-50: #f6f9fd;
  --white: #ffffff;
  --ink: #10233f;
  --muted: #64758c;
  --line: rgba(13, 78, 156, .15);
  --shadow: 0 24px 70px rgba(6, 28, 61, .13);
  --radius-lg: 34px;
  --radius-md: 22px;
  --radius-sm: 14px;
  --max: 1180px;
  --header-h: 82px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 18px);
}

body {
  margin: 0;
  min-width: 320px;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--ink);
  background: var(--white);
  line-height: 1.6;
  overflow-x: hidden;
}

body.menu-open {
  overflow: hidden;
}

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

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

button {
  font: inherit;
}

svg {
  display: block;
}

::selection {
  background: var(--blue-600);
  color: var(--white);
}

}

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--header-h);
  display: flex;
  align-items: center;
  background: rgba(255, 255, 255, .9);
  border-bottom: 1px solid rgba(11, 42, 91, .08);
  backdrop-filter: blur(18px);
  transition: box-shadow .3s ease, background .3s ease;
}

.site-header.is-scrolled {
  background: rgba(255, 255, 255, .96);
  box-shadow: 0 10px 30px rgba(7, 23, 46, .08);
}

.header-shell,
.section-shell,
.footer-shell {
  width: min(var(--max), calc(100% - 48px));
  margin-inline: auto;
}

.header-shell {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
}

.brand {
  min-width: 0;
  display: flex;
  align-items: center;
  gap: 13px;
}

.brand-mark {
  flex: 0 0 auto;
  width: 49px;
  height: 49px;
  display: grid;
  place-items: center;
  color: var(--white);
  background:
    linear-gradient(145deg, rgba(255,255,255,.17), transparent 55%),
    var(--navy-800);
  font-weight: 900;
  font-size: .73rem;
  letter-spacing: .05em;
  border-radius: 15px;
  box-shadow: 0 10px 25px rgba(11, 42, 91, .18);
}

.brand-copy {
  display: grid;
  gap: 2px;
  min-width: 0;
}

.brand-copy strong {
  font-size: .84rem;
  line-height: 1.1;
  letter-spacing: .02em;
  color: var(--navy-900);
}

.brand-copy small {
  max-width: 430px;
  font-size: .56rem;
  line-height: 1.25;
  letter-spacing: .08em;
  color: var(--muted);
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 8px;
}

.main-nav a {
  position: relative;
  padding: 12px 14px;
  color: var(--navy-800);
  font-size: .88rem;
  font-weight: 700;
}

.main-nav a::after {
  content: "";
  position: absolute;
  left: 14px;
  right: 14px;
  bottom: 8px;
  height: 2px;
  border-radius: 2px;
  background: var(--blue-600);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform .25s ease;
}

.main-nav a:hover::after,
.main-nav a.active::after {
  transform: scaleX(1);
  transform-origin: left;
}

.nav-toggle {
  display: none;
  width: 46px;
  height: 46px;
  padding: 0;
  border: 0;
  border-radius: 14px;
  background: var(--ice-100);
  cursor: pointer;
}

.nav-toggle span {
  width: 20px;
  height: 2px;
  display: block;
  margin: 4px auto;
  border-radius: 2px;
  background: var(--navy-800);
  transition: transform .25s ease, opacity .25s ease;
}

.section-dark {
  color: var(--white);
  background: var(--navy-950);
}

.section-light {
  background: var(--white);
}

.hero {
  position: relative;
  min-height: 100svh;
  padding: calc(var(--header-h) + 86px) max(24px, calc((100vw - var(--max)) / 2)) 52px;
  overflow: hidden;
  isolation: isolate;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -3;
  background:
    radial-gradient(circle at 78% 20%, rgba(44,132,223,.24), transparent 28%),
    radial-gradient(circle at 10% 85%, rgba(18,105,199,.16), transparent 32%),
    linear-gradient(125deg, #07172e 0%, #0a2145 62%, #0b2a5b 100%);
}

.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -2;
  opacity: .2;
  background-image:
    linear-gradient(rgba(255,255,255,.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.045) 1px, transparent 1px);
  background-size: 52px 52px;
  mask-image: linear-gradient(to bottom, rgba(0,0,0,.9), transparent 96%);
}

.hero-grid {
  width: min(var(--max), 100%);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.05fr .95fr;
  gap: 62px;
  align-items: center;
}

.eyebrow {
  margin: 0 0 18px;
  color: #8ec5ff;
  font-size: .73rem;
  font-weight: 900;
  letter-spacing: .17em;
  text-transform: uppercase;
}

.eyebrow.dark {
  color: var(--blue-700);
}

.hero h1 {
  max-width: 720px;
  margin: 0;
  font-size: clamp(3.2rem, 7vw, 6.7rem);
  line-height: .88;
  letter-spacing: -.055em;
  font-weight: 900;
}

.hero h1 span {
  color: transparent;
  -webkit-text-stroke: 1px rgba(255,255,255,.68);
}

.hero-role {
  margin: 28px 0 0;
  color: #cfe4ff;
  font-weight: 800;
  font-size: clamp(1.12rem, 2vw, 1.5rem);
  letter-spacing: .02em;
}

.hero-lead {
  max-width: 620px;
  margin: 22px 0 0;
  color: rgba(255,255,255,.72);
  font-size: clamp(1rem, 1.5vw, 1.16rem);
}

.hero-actions {
  margin-top: 34px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.btn {
  min-height: 50px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 18px;
  padding: 13px 20px;
  border: 1px solid transparent;
  border-radius: 999px;
  font-weight: 800;
  font-size: .93rem;
  transition: transform .25s ease, background .25s ease, color .25s ease, border-color .25s ease, box-shadow .25s ease;
}

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

.btn-primary {
  color: var(--white);
  background: linear-gradient(135deg, var(--blue-600), var(--blue-500));
  box-shadow: 0 12px 28px rgba(18, 105, 199, .28);
}

.btn-primary:hover {
  box-shadow: 0 16px 32px rgba(18, 105, 199, .38);
}

.btn-ghost {
  border-color: rgba(255,255,255,.2);
  color: var(--white);
  background: rgba(255,255,255,.05);
}

.btn-ghost:hover {
  background: rgba(255,255,255,.1);
  border-color: rgba(255,255,255,.35);
}

.btn-outline {
  color: var(--navy-800);
  border-color: rgba(11,42,91,.18);
  background: var(--white);
}

.btn-outline:hover {
  border-color: var(--blue-600);
  color: var(--blue-600);
}

.btn-arrow {
  width: 30px;
  height: 30px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: rgba(255,255,255,.14);
}

.hero-visual {
  position: relative;
  min-height: 520px;
}

.visual-card {
  position: absolute;
  z-index: 3;
  border: 1px solid rgba(255,255,255,.13);
  background: rgba(255,255,255,.075);
  box-shadow: 0 28px 80px rgba(0,0,0,.24);
  backdrop-filter: blur(16px);
}

.card-main {
  top: 50%;
  left: 50%;
  width: min(370px, 80%);
  aspect-ratio: 1 / .92;
  padding: 34px;
  border-radius: 30px;
  transform: translate(-50%, -50%) rotate(-3deg);
}

.card-main::before {
  content: "";
  position: absolute;
  inset: 14px;
  border: 1px solid rgba(255,255,255,.11);
  border-radius: 21px;
}

.visual-kicker {
  display: block;
  color: #9acbff;
  font-size: .68rem;
  font-weight: 900;
  letter-spacing: .2em;
}

.card-main strong {
  display: block;
  margin-top: 58px;
  font-size: clamp(2.3rem, 4vw, 4.2rem);
  line-height: .9;
  letter-spacing: -.05em;
}

.visual-line {
  width: 58%;
  height: 3px;
  margin: 27px 0 15px;
  background: linear-gradient(90deg, var(--blue-500), transparent);
}

.card-main p {
  margin: 0;
  color: rgba(255,255,255,.68);
  font-size: 1.05rem;
}

.card-small {
  width: 185px;
  min-height: 112px;
  padding: 20px;
  border-radius: 22px;
  display: grid;
  align-content: center;
  gap: 7px;
}

.card-small span {
  color: #91c8ff;
  font-size: .72rem;
  font-weight: 900;
}

.card-small strong {
  font-size: .93rem;
}

.card-small.top {
  top: 70px;
  right: -5px;
  animation: floatCard 6s ease-in-out infinite;
}

.card-small.bottom {
  left: -4px;
  bottom: 63px;
  animation: floatCard 6s ease-in-out infinite reverse;
}

@keyframes floatCard {
  0%,100% { transform: translateY(0); }
  50% { transform: translateY(-13px); }
}

.orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(1px);
}

.orb-one {
  width: 250px;
  height: 250px;
  right: 20px;
  top: 8px;
  background: radial-gradient(circle at 30% 30%, rgba(80,160,255,.55), rgba(13,78,156,.05) 70%);
}

.orb-two {
  width: 180px;
  height: 180px;
  left: 30px;
  bottom: 30px;
  background: radial-gradient(circle at 40% 40%, rgba(255,255,255,.12), rgba(44,132,223,.03) 70%);
}

.visual-grid-lines {
  position: absolute;
  inset: 40px;
  border: 1px solid rgba(255,255,255,.08);
  border-radius: 50%;
  transform: rotate(18deg);
}

.visual-grid-lines::before,
.visual-grid-lines::after {
  content: "";
  position: absolute;
  inset: 15%;
  border: 1px solid rgba(255,255,255,.07);
  border-radius: 50%;
}

.visual-grid-lines::after {
  inset: 32%;
}

.hero-metrics {
  width: min(var(--max), 100%);
  margin: 62px auto 0;
  padding-top: 28px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid rgba(255,255,255,.11);
}

.hero-metrics > div {
  min-width: 0;
  padding: 0 24px;
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 12px;
  align-items: center;
  border-left: 1px solid rgba(255,255,255,.11);
}

.hero-metrics > div:first-child {
  border-left: 0;
  padding-left: 0;
}

.hero-metrics span {
  color: #78b8fa;
  font-size: .7rem;
  font-weight: 900;
}

.hero-metrics strong {
  font-size: .88rem;
  letter-spacing: .02em;
}

.about,
.principles,
.profile,
.contact {
  padding: 110px 0;
}

.section-heading {
  max-width: 800px;
}

.section-heading h2,
.client-label h2,
.contact-intro h2 {
  margin: 0;
  color: var(--navy-900);
  font-size: clamp(2.2rem, 4.7vw, 4.6rem);
  line-height: .98;
  letter-spacing: -.05em;
}

.section-heading.split {
  max-width: none;
  display: grid;
  grid-template-columns: 1fr minmax(260px, 360px);
  gap: 60px;
  align-items: end;
}

.section-heading.split > p {
  margin: 0 0 8px;
  color: var(--muted);
}

.about-layout {
  margin-top: 58px;
  display: grid;
  grid-template-columns: 1.2fr .8fr;
  gap: 28px;
  align-items: stretch;
}

.about-panel {
  position: relative;
  overflow: hidden;
  padding: clamp(32px, 6vw, 66px);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background:
    linear-gradient(145deg, rgba(237,245,255,.75), rgba(255,255,255,.96));
  box-shadow: var(--shadow);
}

.about-panel::before {
  content: "";
  position: absolute;
  width: 230px;
  height: 230px;
  right: -120px;
  top: -130px;
  border: 45px solid rgba(18,105,199,.08);
  border-radius: 50%;
}

.about-panel p {
  position: relative;
  margin: 0;
  font-size: clamp(1.05rem, 1.8vw, 1.35rem);
  color: #263b58;
}

.about-panel p + p {
  margin-top: 26px;
}

.about-accent {
  position: relative;
  overflow: hidden;
  min-height: 390px;
  padding: 36px;
  border-radius: var(--radius-lg);
  background:
    radial-gradient(circle at 70% 20%, rgba(99,170,247,.42), transparent 28%),
    linear-gradient(145deg, var(--navy-900), var(--blue-700));
  box-shadow: var(--shadow);
}

.about-accent > span {
  display: block;
  color: rgba(255,255,255,.12);
  font-size: clamp(4.4rem, 10vw, 8rem);
  font-weight: 900;
  letter-spacing: -.08em;
  line-height: 1;
}

.accent-bars {
  position: absolute;
  left: 36px;
  right: 36px;
  bottom: 36px;
  height: 140px;
  display: flex;
  gap: 13px;
  align-items: end;
}

.accent-bars i {
  flex: 1;
  display: block;
  border-radius: 10px 10px 3px 3px;
  background: linear-gradient(to top, rgba(255,255,255,.22), rgba(255,255,255,.7));
}

.accent-bars i:nth-child(1) { height: 36%; }
.accent-bars i:nth-child(2) { height: 61%; }
.accent-bars i:nth-child(3) { height: 45%; }
.accent-bars i:nth-child(4) { height: 82%; }
.accent-bars i:nth-child(5) { height: 100%; }

.client-section {
  position: relative;
  padding: 88px 0;
  overflow: hidden;
  background: var(--ice-50);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.client-section::after {
  content: "";
  position: absolute;
  width: 370px;
  height: 370px;
  right: -210px;
  top: -150px;
  border: 58px solid rgba(18,105,199,.06);
  border-radius: 50%;
}

.client-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: .72fr 1.28fr;
  gap: 70px;
  align-items: center;
}

.client-label span {
  color: var(--blue-700);
  font-size: .72rem;
  font-weight: 900;
  letter-spacing: .18em;
}

.client-label h2 {
  margin-top: 14px;
  font-size: clamp(2.2rem, 4vw, 3.7rem);
}

.client-copy blockquote {
  margin: 0;
  padding: 10px 0 10px 32px;
  border-left: 3px solid var(--blue-600);
  color: #334a68;
  font-size: clamp(1.08rem, 2vw, 1.45rem);
  font-weight: 600;
}

.principles-grid {
  margin-top: 58px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.principle-card {
  min-height: 350px;
  padding: 31px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--white);
  box-shadow: 0 18px 55px rgba(7,23,46,.08);
  display: flex;
  flex-direction: column;
  transition: transform .3s ease, box-shadow .3s ease, border-color .3s ease;
}

.principle-card:hover {
  transform: translateY(-8px);
  border-color: rgba(18,105,199,.3);
  box-shadow: 0 28px 65px rgba(7,23,46,.12);
}

.principle-card.featured {
  color: var(--white);
  border-color: transparent;
  background:
    radial-gradient(circle at 95% 10%, rgba(87,169,255,.42), transparent 25%),
    linear-gradient(155deg, var(--navy-900), var(--blue-700));
}

.principle-number {
  color: var(--blue-600);
  font-size: .75rem;
  font-weight: 900;
  letter-spacing: .1em;
}

.featured .principle-number {
  color: #a6d1ff;
}

.principle-card h3 {
  margin: auto 0 18px;
  color: var(--navy-900);
  font-size: 1.45rem;
  line-height: 1.06;
  letter-spacing: -.025em;
}

.featured h3 {
  color: var(--white);
}

.principle-card p {
  margin: 0;
  color: var(--muted);
}

.featured p {
  color: rgba(255,255,255,.75);
}

.services {
  position: relative;
  padding: 120px 0;
  overflow: hidden;
  background:
    radial-gradient(circle at 90% 5%, rgba(44,132,223,.16), transparent 24%),
    var(--navy-950);
}

.services::after {
  content: "";
  position: absolute;
  inset: 0;
  opacity: .11;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(255,255,255,.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.08) 1px, transparent 1px);
  background-size: 58px 58px;
}

.services .section-shell {
  position: relative;
  z-index: 1;
}

.section-heading.light h2 {
  color: var(--white);
}

.services-grid {
  margin-top: 58px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}

.service-card {
  position: relative;
  min-height: 205px;
  padding: 27px;
  overflow: hidden;
  border: 1px solid rgba(255,255,255,.11);
  border-radius: var(--radius-md);
  background: rgba(255,255,255,.045);
  backdrop-filter: blur(8px);
  transition: transform .3s ease, background .3s ease, border-color .3s ease;
}

.service-card::before {
  content: "";
  position: absolute;
  width: 130px;
  height: 130px;
  right: -80px;
  bottom: -80px;
  border: 28px solid rgba(44,132,223,.13);
  border-radius: 50%;
  transition: transform .4s ease;
}

.service-card:hover {
  transform: translateY(-6px);
  border-color: rgba(125,190,255,.32);
  background: rgba(255,255,255,.075);
}

.service-card:hover::before {
  transform: scale(1.25);
}

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

.service-number {
  color: #76b9fd;
  font-size: .72rem;
  font-weight: 900;
  letter-spacing: .12em;
}

.service-card h3 {
  max-width: 90%;
  margin: 47px 0 0;
  color: var(--white);
  font-size: clamp(1.12rem, 2vw, 1.45rem);
  line-height: 1.12;
  letter-spacing: -.02em;
}

.service-card p {
  margin: 11px 0 0;
  color: rgba(255,255,255,.62);
}

.statement {
  position: relative;
  padding: 112px 24px;
  overflow: hidden;
  color: var(--white);
  background:
    linear-gradient(120deg, var(--blue-700), var(--navy-900));
}

.statement-inner {
  position: relative;
  z-index: 2;
  max-width: 930px;
  margin: 0 auto;
  text-align: center;
}

.statement blockquote {
  margin: 12px auto 25px;
  font-size: clamp(2.2rem, 5vw, 4.7rem);
  line-height: .98;
  letter-spacing: -.05em;
  font-weight: 850;
}

.statement strong {
  display: inline-block;
  color: rgba(255,255,255,.74);
  font-size: .78rem;
  letter-spacing: .12em;
}

.statement-decoration {
  position: absolute;
  border: 1px solid rgba(255,255,255,.12);
  border-radius: 50%;
}

.statement-decoration.left {
  width: 380px;
  height: 380px;
  left: -150px;
  top: -220px;
}

.statement-decoration.right {
  width: 520px;
  height: 520px;
  right: -260px;
  bottom: -330px;
}

.profile {
  padding-bottom: 40px;
}

.profile-card {
  position: relative;
  overflow: hidden;
  padding: 42px;
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 28px;
  align-items: center;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--ice-50);
}

.profile-monogram {
  width: 105px;
  height: 105px;
  display: grid;
  place-items: center;
  color: var(--white);
  border-radius: 26px;
  background:
    linear-gradient(145deg, rgba(255,255,255,.16), transparent 60%),
    var(--navy-800);
  box-shadow: 0 18px 38px rgba(11,42,91,.18);
  font-size: 1.25rem;
  font-weight: 900;
  letter-spacing: .08em;
}

.profile-copy h2 {
  margin: 0;
  color: var(--navy-900);
  font-size: clamp(1.75rem, 3.6vw, 3.3rem);
  line-height: 1;
  letter-spacing: -.04em;
}

.profile-copy > p:last-child {
  margin: 12px 0 0;
  color: var(--blue-700);
  font-weight: 800;
}

.profile-line {
  width: 120px;
  height: 1px;
  background: var(--blue-600);
}

.contact {
  padding-top: 70px;
}

.contact-grid {
  display: grid;
  grid-template-columns: .82fr 1.18fr;
  gap: 70px;
  align-items: start;
}

.contact-intro {
  position: sticky;
  top: calc(var(--header-h) + 32px);
}

.contact-intro > p:last-of-type {
  margin: 27px 0 0;
  color: var(--navy-800);
  font-weight: 900;
}

.contact-intro span {
  color: var(--muted);
}

.contact-card {
  padding: clamp(28px, 5vw, 48px);
  border-radius: var(--radius-lg);
  color: var(--white);
  background:
    radial-gradient(circle at 90% 8%, rgba(79,161,249,.36), transparent 26%),
    linear-gradient(150deg, var(--navy-950), var(--navy-800));
  box-shadow: var(--shadow);
}

.contact-row {
  padding: 22px 0;
  display: grid;
  grid-template-columns: 48px 1fr;
  gap: 16px;
  align-items: start;
  border-bottom: 1px solid rgba(255,255,255,.1);
}

.contact-row:first-child {
  padding-top: 0;
}

.contact-icon {
  width: 45px;
  height: 45px;
  display: grid;
  place-items: center;
  border-radius: 14px;
  background: rgba(255,255,255,.08);
}

.contact-icon svg {
  width: 22px;
  height: 22px;
  fill: #a7d2ff;
}

.contact-row small {
  display: block;
  margin-bottom: 3px;
  color: #9ccaff;
  font-size: .72rem;
  font-weight: 800;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.contact-row a,
.contact-row address {
  font-size: clamp(1rem, 2vw, 1.18rem);
  font-style: normal;
  font-weight: 700;
}

.contact-row a {
  transition: color .2s ease;
}

.contact-row a:hover {
  color: #9dcfff;
}

.contact-actions {
  margin-top: 30px;
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.contact-actions .btn-outline {
  color: var(--white);
  border-color: rgba(255,255,255,.18);
  background: rgba(255,255,255,.07);
}

.contact-actions .btn-outline:hover {
  background: rgba(255,255,255,.12);
}

.site-footer {
  padding: 44px 0;
  color: rgba(255,255,255,.76);
  background: #050f20;
}

.footer-shell {
  display: grid;
  grid-template-columns: 1.3fr .7fr .8fr;
  gap: 30px;
  align-items: start;
}

.footer-brand {
  display: grid;
  gap: 8px;
}

.footer-brand strong {
  color: var(--white);
  font-size: .82rem;
  letter-spacing: .035em;
}

.footer-brand span {
  font-size: .8rem;
}

.footer-links,
.footer-contact {
  display: grid;
  gap: 7px;
}

.footer-links a,
.footer-contact a {
  font-size: .82rem;
  transition: color .2s ease;
}

.footer-links a:hover,
.footer-contact a:hover {
  color: var(--white);
}

.back-to-top {
  position: fixed;
  right: 22px;
  bottom: 22px;
  z-index: 900;
  width: 48px;
  height: 48px;
  display: grid;
  place-items: center;
  color: var(--white);
  border: 1px solid rgba(255,255,255,.16);
  border-radius: 16px;
  background: rgba(11,42,91,.94);
  box-shadow: 0 12px 28px rgba(7,23,46,.22);
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  cursor: pointer;
  transition: opacity .25s ease, visibility .25s ease, transform .25s ease, background .25s ease;
}

.back-to-top.is-visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top:hover {
  background: var(--blue-700);
}

.reveal {
  opacity: 1;
  transform: none;
}

.reveal.motion-ready {
  animation: revealUp .7s cubic-bezier(.2,.7,.2,1) both;
}

@keyframes revealUp {
  from { opacity: .35; transform: translateY(22px); }
  to { opacity: 1; transform: translateY(0); }
}

.reveal.is-visible {
  opacity: 1;
  transform: none;
}

@media (max-width: 960px) {
  :root {
    --header-h: 76px;
  }

  .header-shell,
  .section-shell,
  .footer-shell {
    width: min(var(--max), calc(100% - 34px));
  }

  .brand-copy small {
    display: none;
  }

  .main-nav {
    position: fixed;
    top: var(--header-h);
    left: 17px;
    right: 17px;
    max-height: 0;
    overflow: hidden;
    opacity: 0;
    display: grid;
    gap: 2px;
    padding: 0 12px;
    border: 1px solid transparent;
    border-radius: 20px;
    background: rgba(255,255,255,.98);
    box-shadow: 0 24px 60px rgba(7,23,46,.15);
    transition: max-height .32s ease, opacity .25s ease, padding .32s ease, border-color .32s ease;
  }

  .main-nav.is-open {
    max-height: 360px;
    opacity: 1;
    padding: 12px;
    border-color: rgba(11,42,91,.08);
  }

  .main-nav a {
    padding: 14px;
    border-radius: 12px;
  }

  .main-nav a:hover {
    background: var(--ice-50);
  }

  .nav-toggle {
    display: block;
  }

  .nav-toggle.is-open span:nth-child(1) {
    transform: translateY(6px) rotate(45deg);
  }

  .nav-toggle.is-open span:nth-child(2) {
    opacity: 0;
  }

  .nav-toggle.is-open span:nth-child(3) {
    transform: translateY(-6px) rotate(-45deg);
  }

  .hero {
    min-height: auto;
    padding-top: calc(var(--header-h) + 62px);
  }

  .hero-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .hero-copy {
    max-width: 760px;
  }

  .hero-visual {
    min-height: 460px;
  }

  .card-main {
    width: min(390px, 75%);
  }

  .hero-metrics {
    grid-template-columns: repeat(2, 1fr);
    row-gap: 20px;
  }

  .hero-metrics > div:nth-child(3) {
    border-left: 0;
    padding-left: 0;
  }

  .about-layout,
  .client-grid,
  .contact-grid {
    grid-template-columns: 1fr;
  }

  .client-grid {
    gap: 30px;
  }

  .section-heading.split {
    grid-template-columns: 1fr;
    gap: 22px;
  }

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

  .principle-card {
    min-height: 270px;
  }

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

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

  .contact-intro {
    position: static;
  }

  .footer-shell {
    grid-template-columns: 1fr 1fr;
  }

  .footer-brand {
    grid-column: 1 / -1;
  }
}

@media (max-width: 640px) {
  .header-shell,
  .section-shell,
  .footer-shell {
    width: min(var(--max), calc(100% - 28px));
  }

  .brand-mark {
    width: 44px;
    height: 44px;
    border-radius: 13px;
  }

  .brand-copy strong {
    max-width: 190px;
    font-size: .72rem;
  }

  .hero {
    padding-left: 14px;
    padding-right: 14px;
    padding-bottom: 34px;
  }

  .hero h1 {
    font-size: clamp(3rem, 15vw, 4.7rem);
  }

  .hero-actions {
    display: grid;
    grid-template-columns: 1fr 1fr;
  }

  .btn {
    width: 100%;
  }

  .hero-visual {
    min-height: 390px;
  }

  .card-main {
    width: 78%;
    padding: 26px;
  }

  .card-main strong {
    margin-top: 44px;
  }

  .card-small {
    width: 146px;
    min-height: 92px;
    padding: 16px;
  }

  .card-small.top {
    top: 40px;
    right: 0;
  }

  .card-small.bottom {
    left: 0;
    bottom: 40px;
  }

  .visual-grid-lines {
    inset: 28px;
  }

  .hero-metrics {
    grid-template-columns: 1fr 1fr;
    margin-top: 35px;
    gap: 0;
  }

  .hero-metrics > div {
    min-height: 54px;
    padding: 0 10px;
    grid-template-columns: 1fr;
    gap: 2px;
  }

  .hero-metrics > div:nth-child(2n+1) {
    padding-left: 0;
    border-left: 0;
  }

  .hero-metrics strong {
    font-size: .78rem;
  }

  .about,
  .principles,
  .profile,
  .contact,
  .services {
    padding-top: 78px;
    padding-bottom: 78px;
  }

  .about-panel,
  .about-accent,
  .profile-card,
  .contact-card {
    border-radius: 24px;
  }

  .about-accent {
    min-height: 300px;
  }

  .client-section {
    padding: 66px 0;
  }

  .client-copy blockquote {
    padding-left: 20px;
  }

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

  .service-card,
  .service-card.wide {
    grid-column: auto;
    min-height: 180px;
  }

  .statement {
    padding: 84px 18px;
  }

  .profile-card {
    grid-template-columns: 1fr;
    padding: 29px;
  }

  .profile-monogram {
    width: 82px;
    height: 82px;
    border-radius: 22px;
  }

  .profile-line {
    width: 100%;
  }

  .contact-card {
    padding: 26px 22px;
  }

  .contact-row {
    grid-template-columns: 40px 1fr;
  }

  .contact-icon {
    width: 40px;
    height: 40px;
  }

  .contact-row a {
    overflow-wrap: anywhere;
  }

  .contact-actions {
    display: grid;
    grid-template-columns: 1fr;
  }

  .footer-shell {
    grid-template-columns: 1fr;
  }

  .footer-brand {
    grid-column: auto;
  }

  .back-to-top {
    right: 14px;
    bottom: 14px;
  }
}

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

  *,
  *::before,
  *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }
}