:root {
  --bg: #ffffff;
  --bg-alt: #fbfbfd;
  --bg-dark: #0a0a0a;
  --bg-dark-2: #111114;
  --ink: #1d1d1f;
  --ink-2: #6e6e73;
  --ink-3: #86868b;
  --line: rgba(0, 0, 0, .08);
  --line-dark: rgba(255, 255, 255, .08);
  --brand: #0066cc;
  --brand-2: #0071e3;
  --accent: #1d4ed8;
  --radius: 22px;
  --radius-sm: 14px;
  --shadow-sm: 0 6px 20px rgba(0, 0, 0, .06);
  --shadow-md: 0 24px 60px rgba(0, 0, 0, .12);
  --ease: cubic-bezier(.22, 1, .36, 1);
  --max-w: 1180px;
  --pad-x: clamp(20px, 5vw, 56px);
  --font: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text",
          "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Helvetica, Arial,
          "Hiragino Sans GB", sans-serif;
}

/* ---------- Reset / base ---------- */
*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--ink);
  font-size: 17px;
  line-height: 1.55;
  font-feature-settings: "ss01", "ss02", "cv11";
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
ul { list-style: none; padding: 0; margin: 0; }

.container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding-left: var(--pad-x);
  padding-right: var(--pad-x);
}

/* Section eyebrow / title / lead */
.section__eyebrow {
  font-size: 14px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--ink-3);
  margin: 0 0 14px;
  font-weight: 600;
}
.section__title {
  font-size: clamp(36px, 6vw, 64px);
  line-height: 1.06;
  letter-spacing: -0.02em;
  font-weight: 700;
  color: var(--ink);
  margin: 0 0 22px;
}
.section__lead {
  font-size: clamp(18px, 1.6vw, 22px);
  line-height: 1.55;
  color: var(--ink-2);
  max-width: 760px;
  margin: 0 0 64px;
}

/* ==========================================================================
   Top Navigation
   ========================================================================== */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  height: 52px;
  background: rgba(10, 10, 10, .55);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  color: #fff;
  transition: background .4s var(--ease), color .4s var(--ease),
              box-shadow .4s var(--ease), border-color .4s var(--ease);
  border-bottom: 1px solid transparent;
}
.nav.is-light {
  background: rgba(255, 255, 255, .72);
  color: var(--ink);
  border-bottom-color: var(--line);
  box-shadow: 0 1px 0 rgba(0, 0, 0, .02);
}
.nav__inner {
  max-width: 1180px;
  height: 100%;
  margin: 0 auto;
  padding: 0 var(--pad-x);
  display: flex;
  align-items: center;
  gap: 28px;
}
.nav__brand {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 17px;
  font-weight: 600;
  letter-spacing: -0.01em;
}
.nav__logo {
  width: 22px; height: 22px;
  color: var(--brand-2);
}
.nav__menu {
  display: flex;
  gap: 26px;
  margin-left: 12px;
}
.nav__menu a {
  font-size: 13px;
  opacity: .85;
  transition: opacity .2s ease;
}
.nav__menu a:hover { opacity: 1; }

.nav__cta {
  margin-left: auto;
  font-size: 13px;
  padding: 7px 14px;
  border-radius: 999px;
  background: var(--brand-2);
  color: #fff;
  transition: transform .2s var(--ease), opacity .25s ease, background .2s ease;
}
.nav__cta:hover { background: #0077ed; transform: translateY(-1px); }

.nav__burger {
  display: none;
  width: 32px; height: 32px;
  margin-left: auto;
  position: relative;
}
.nav__burger span {
  position: absolute;
  left: 6px; right: 6px;
  height: 1.5px;
  background: currentColor;
  border-radius: 1px;
  transition: transform .3s var(--ease), opacity .3s var(--ease);
}
.nav__burger span:nth-child(1){ top: 11px; }
.nav__burger span:nth-child(2){ top: 15.5px; }
.nav__burger span:nth-child(3){ top: 20px; }

@media (max-width: 860px) {
  .nav__menu, .nav__cta { display: none; }
  .nav__burger { display: block; }
}

/* ==========================================================================
   Hero
   ========================================================================== */
.hero {
  position: relative;
  min-height: 100vh;
  color: #fff;
  display: flex;
  align-items: center;
  overflow: hidden;
  background: var(--bg-dark);
}
.hero__bg {
  position: absolute; inset: 0;
  background:
    radial-gradient(1200px 700px at 70% 20%, rgba(0, 113, 227, .35), transparent 60%),
    radial-gradient(900px 500px at 20% 90%, rgba(70, 90, 255, .25), transparent 60%),
    linear-gradient(180deg, #050507 0%, #0a0a0a 60%, #000 100%);
}
.hero__bg::before {
  content: "";
  position: absolute; inset: 0;
  background-image:
    radial-gradient(circle at 25% 30%, rgba(255,255,255,.04) 0 1px, transparent 1.5px),
    radial-gradient(circle at 75% 60%, rgba(255,255,255,.03) 0 1px, transparent 1.5px);
  background-size: 60px 60px, 90px 90px;
  opacity: .5;
  mask-image: radial-gradient(ellipse at 50% 40%, #000 50%, transparent 80%);
}
.hero__bg::after {
  content: "";
  position: absolute; inset: 0;
  background: linear-gradient(180deg, transparent 60%, #000 100%);
}
.hero__inner {
  position: relative;
  z-index: 1;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 130px var(--pad-x) 90px;
  width: 100%;
}
.hero__eyebrow {
  font-size: 14px;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: rgba(255,255,255,.65);
  margin: 0 0 22px;
  font-weight: 500;
}
.hero__title {
  font-size: clamp(48px, 8.4vw, 112px);
  line-height: 1.02;
  letter-spacing: -0.035em;
  font-weight: 700;
  margin: 0 0 26px;
  background: linear-gradient(180deg, #fff 0%, rgba(255,255,255,.78) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero__title-accent {
  background: linear-gradient(95deg, #5ac8fa 0%, #007aff 50%, #5856d6 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  display: inline-block;
}
.hero__sub {
  font-size: clamp(18px, 1.7vw, 24px);
  color: rgba(255,255,255,.78);
  max-width: 720px;
  line-height: 1.5;
  margin: 0 0 36px;
  font-weight: 400;
  letter-spacing: -0.005em;
}
@media (max-width: 720px) {
  .hero__sub-br { display: none; }
}
.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  align-items: center;
}
.hero__scroll {
  position: absolute;
  bottom: 28px;
  left: 50%; transform: translateX(-50%);
  width: 22px; height: 36px;
  border: 1.5px solid rgba(255,255,255,.4);
  border-radius: 12px;
  display: flex; justify-content: center; padding-top: 6px;
  opacity: .8;
}
.hero__scroll span {
  display: block;
  width: 3px; height: 6px;
  background: #fff;
  border-radius: 2px;
  animation: scrollDot 1.8s var(--ease) infinite;
}
@keyframes scrollDot {
  0% { transform: translateY(0); opacity: 1; }
  60% { transform: translateY(14px); opacity: 0; }
  100% { transform: translateY(0); opacity: 0; }
}

/* ---------- Button ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 15px;
  font-weight: 500;
  padding: 12px 22px;
  border-radius: 999px;
  transition: transform .25s var(--ease), background .25s ease, color .25s ease;
  letter-spacing: -0.005em;
}
.btn--primary {
  background: var(--brand-2);
  color: #fff;
}
.btn--primary:hover {
  background: #0077ed;
  transform: translateY(-1px);
}
.btn--ghost {
  background: rgba(255, 255, 255, .08);
  color: inherit;
  border: 1px solid rgba(255, 255, 255, .18);
}
.btn--ghost:hover { background: rgba(255, 255, 255, .14); }
.btn--large { padding: 14px 28px; font-size: 16px; }

/* Light themes override */
.about .btn--ghost,
.services .btn--ghost,
.cta .btn--ghost {
  background: rgba(0, 0, 0, .04);
  border-color: rgba(0, 0, 0, .12);
}
.about .btn--ghost:hover,
.services .btn--ghost:hover,
.cta .btn--ghost:hover {
  background: rgba(0, 0, 0, .08);
}

/* ==========================================================================
   Brand strip
   ========================================================================== */
.brand-strip {
  background: var(--bg-dark);
  color: rgba(255,255,255,.75);
  border-top: 1px solid var(--line-dark);
  padding: 28px var(--pad-x);
  overflow: hidden;
}
.brand-strip__inner {
  max-width: 1180px;
  margin: 0 auto;
  display: flex;
  justify-content: center;
}
.brand-strip__text {
  margin: 0;
  font-size: 13px;
  letter-spacing: .12em;
  text-align: center;
  color: rgba(255,255,255,.7);
}

/* ==========================================================================
   About
   ========================================================================== */
.about {
  background: var(--bg);
  padding: clamp(80px, 12vw, 140px) 0;
  border-bottom: 1px solid var(--line);
}
.about__grid {
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  gap: clamp(36px, 5vw, 80px);
  align-items: center;
  margin-top: 24px;
}
.about__list {
  display: flex;
  flex-direction: column;
  gap: 28px;
}
.about__item {
  display: flex;
  gap: 22px;
  padding-bottom: 28px;
  border-bottom: 1px solid var(--line);
}
.about__item:last-child { border-bottom: 0; padding-bottom: 0; }
.about__num {
  font-size: 14px;
  color: var(--ink-3);
  letter-spacing: .14em;
  font-weight: 600;
  min-width: 28px;
  padding-top: 4px;
}
.about__item h4 {
  font-size: 22px;
  margin: 0 0 6px;
  font-weight: 600;
  letter-spacing: -0.01em;
}
.about__item p {
  margin: 0;
  color: var(--ink-2);
  font-size: 17px;
}
.about__media {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  aspect-ratio: 4 / 5;
  background: var(--bg-alt);
  box-shadow: var(--shadow-md);
}
.about__media img {
  width: 100%; height: 100%; object-fit: cover;
  transition: transform 1.4s var(--ease);
}
.about__media:hover img { transform: scale(1.04); }
.about__media-badge {
  position: absolute;
  left: 22px; bottom: 22px;
  padding: 10px 16px;
  background: rgba(255,255,255,.86);
  backdrop-filter: blur(12px);
  border-radius: 12px;
  font-size: 11px;
  letter-spacing: .12em;
  line-height: 1.4;
  color: var(--ink);
  font-weight: 600;
}
@media (max-width: 860px) {
  .about__grid { grid-template-columns: 1fr; }
  .about__media { aspect-ratio: 4/3; }
}

/* ==========================================================================
   Services
   ========================================================================== */
.services {
  background: var(--bg-alt);
  padding: clamp(80px, 12vw, 140px) 0;
}
.services__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}
.svc-card {
  position: relative;
  background: #fff;
  border-radius: var(--radius);
  padding: 36px 32px 88px;
  min-height: 260px;
  box-shadow: var(--shadow-sm);
  transition: transform .5s var(--ease), box-shadow .5s var(--ease);
  overflow: hidden;
}
.svc-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
}
.svc-card--wide {
  grid-column: span 3;
  min-height: 200px;
  padding-bottom: 60px;
}
.svc-card__icon {
  width: 56px; height: 56px;
  border-radius: 14px;
  display: flex; align-items: center; justify-content: center;
  background: linear-gradient(145deg, #007aff10, #5ac8fa18);
  color: var(--brand-2);
  margin-bottom: 24px;
}
.svc-card h4 {
  font-size: 22px;
  margin: 0 0 8px;
  font-weight: 600;
  letter-spacing: -0.01em;
}
.svc-card p {
  color: var(--ink-2);
  margin: 0;
  font-size: 16px;
}
.svc-card__num {
  position: absolute;
  right: 28px; bottom: 22px;
  font-size: 64px;
  font-weight: 700;
  letter-spacing: -0.04em;
  color: rgba(0, 113, 227, .1);
  line-height: 1;
}
@media (max-width: 860px) {
  .services__grid { grid-template-columns: 1fr 1fr; }
  .svc-card--wide { grid-column: span 2; }
  .svc-card { padding: 28px 22px 72px; min-height: 220px; }
  .svc-card__num { font-size: 48px; }
}
@media (max-width: 560px) {
  .services__grid { grid-template-columns: 1fr; }
  .svc-card--wide { grid-column: span 1; }
}

/* ==========================================================================
   Statement (full-bleed)
   ========================================================================== */
.statement {
  background: linear-gradient(180deg, #0a0a0a 0%, #111114 100%);
  color: #fff;
  padding: clamp(100px, 16vw, 200px) var(--pad-x);
  position: relative;
  overflow: hidden;
}
.statement::before {
  content: "";
  position: absolute; inset: 0;
  background:
    radial-gradient(800px 400px at 50% 30%, rgba(0,113,227,.18), transparent 60%);
}
.statement__inner {
  position: relative;
  max-width: 980px;
  margin: 0 auto;
  text-align: center;
}
.statement__eyebrow {
  font-size: 13px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: rgba(255,255,255,.5);
  margin: 0 0 26px;
}
.statement__text {
  font-size: clamp(28px, 4.4vw, 56px);
  line-height: 1.18;
  font-weight: 600;
  letter-spacing: -0.02em;
  margin: 0;
  background: linear-gradient(180deg, #fff 0%, rgba(255,255,255,.7) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* ==========================================================================
   Honors
   ========================================================================== */
.honors {
  background: var(--bg);
  padding: clamp(80px, 12vw, 140px) 0;
}
.honors__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  margin-top: 28px;
}
.honor-card {
  margin: 0;
  background: var(--bg-alt);
  border-radius: var(--radius);
  overflow: hidden;
  display: flex; flex-direction: column;
  box-shadow: var(--shadow-sm);
  transition: transform .5s var(--ease), box-shadow .5s var(--ease);
}
.honor-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
}
.honor-card img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  transition: transform 1.6s var(--ease);
}
.honor-card:hover img { transform: scale(1.05); }
.honor-card figcaption {
  padding: 26px 26px 28px;
  display: flex; flex-direction: column; gap: 6px;
}
.honor-card__tag {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--brand-2);
  background: rgba(0, 113, 227, .08);
  padding: 4px 10px;
  border-radius: 999px;
  align-self: flex-start;
  margin-bottom: 6px;
}
.honor-card h4 {
  margin: 0;
  font-size: 19px;
  font-weight: 600;
  letter-spacing: -0.01em;
}
.honor-card p {
  margin: 4px 0 0;
  color: var(--ink-2);
  font-size: 15px;
}
@media (max-width: 860px) {
  .honors__grid { grid-template-columns: 1fr; }
}

/* ==========================================================================
   Activities
   ========================================================================== */
.activities {
  background: var(--bg-alt);
  padding: clamp(80px, 12vw, 140px) 0;
}
.tabs {
  display: inline-flex;
  gap: 4px;
  padding: 4px;
  background: rgba(0,0,0,.06);
  border-radius: 999px;
  margin-bottom: 36px;
}
.tab {
  font-size: 14px;
  padding: 10px 22px;
  border-radius: 999px;
  font-weight: 500;
  color: var(--ink-2);
  transition: background .3s var(--ease), color .3s ease;
}
.tab.is-active {
  background: #fff;
  color: var(--ink);
  box-shadow: 0 1px 4px rgba(0,0,0,.08);
}
.tab:hover:not(.is-active) { color: var(--ink); }

.tabs__panel { display: none; }
.tabs__panel.is-active {
  display: grid;
  animation: tabFade .5s var(--ease);
}
@keyframes tabFade {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}

.cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}
.card {
  background: #fff;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: transform .5s var(--ease), box-shadow .5s var(--ease);
  display: flex; flex-direction: column;
}
.card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
}
.card__media {
  aspect-ratio: 16 / 10;
  overflow: hidden;
  background: var(--bg-alt);
}
.card__media img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform 1.4s var(--ease);
}
.card:hover .card__media img { transform: scale(1.05); }
.card__body { padding: 26px 28px 32px; }
.card__meta {
  font-size: 12px;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--ink-3);
  font-weight: 600;
}
.card__body h4 {
  font-size: 22px;
  margin: 10px 0 8px;
  font-weight: 600;
  letter-spacing: -0.01em;
  line-height: 1.3;
}
.card__body p {
  margin: 0;
  color: var(--ink-2);
  font-size: 16px;
}
@media (max-width: 720px) {
  .cards { grid-template-columns: 1fr; }
}

/* ==========================================================================
   Clients
   ========================================================================== */
.clients {
  background: var(--bg);
  padding: clamp(80px, 12vw, 140px) 0;
}
.clients__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-top: 36px;
}
.clients__grid li {
  height: 110px;
  border-radius: var(--radius-sm);
  background: var(--bg-alt);
  border: 1px solid var(--line);
  display: flex; align-items: center; justify-content: center;
  font-size: 18px;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--ink);
  transition: transform .35s var(--ease), box-shadow .35s var(--ease),
              background .3s ease;
}
.clients__grid li:hover {
  background: #fff;
  box-shadow: var(--shadow-sm);
  transform: translateY(-3px);
}
.clients__grid .muted { color: var(--ink-3); font-weight: 500; }
@media (max-width: 720px) {
  .clients__grid { grid-template-columns: 1fr 1fr; }
}

/* ==========================================================================
   CTA / Contact
   ========================================================================== */
.cta {
  background: var(--bg-dark);
  color: #fff;
  padding: clamp(100px, 14vw, 180px) var(--pad-x);
  position: relative;
  overflow: hidden;
}
.cta::before {
  content: "";
  position: absolute; inset: 0;
  background:
    radial-gradient(800px 400px at 80% 20%, rgba(0,113,227,.22), transparent 60%),
    radial-gradient(600px 300px at 10% 90%, rgba(88,86,214,.18), transparent 60%);
}
.cta__inner {
  position: relative;
  max-width: 980px;
  margin: 0 auto;
  text-align: center;
}
.cta__title {
  font-size: clamp(36px, 5.4vw, 72px);
  line-height: 1.06;
  letter-spacing: -0.025em;
  font-weight: 700;
  margin: 0 0 18px;
  background: linear-gradient(180deg, #fff 0%, rgba(255,255,255,.78) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.cta__sub {
  color: rgba(255,255,255,.7);
  font-size: clamp(16px, 1.5vw, 20px);
  margin: 0 0 36px;
}
.cta__actions {
  display: flex; gap: 14px; justify-content: center; flex-wrap: wrap;
  margin-bottom: 72px;
}
.cta__info {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  padding-top: 36px;
  border-top: 1px solid rgba(255,255,255,.1);
  max-width: 760px;
  margin: 0 auto;
  text-align: center;
}
.cta__info span {
  font-size: 12px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: rgba(255,255,255,.55);
  display: block;
  margin-bottom: 6px;
}
.cta__info p {
  margin: 0;
  font-size: 16px;
  color: rgba(255,255,255,.92);
}
@media (max-width: 720px) {
  .cta__info { grid-template-columns: 1fr; gap: 18px; }
}

/* ==========================================================================
   Footer
   ========================================================================== */
.footer {
  background: #000;
  color: rgba(255,255,255,.7);
  padding: 56px 0 24px;
  font-size: 13px;
}
.footer__inner {
  display: flex;
  justify-content: space-between;
  gap: 60px;
  align-items: flex-start;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255,255,255,.1);
}
.footer__brand strong {
  display: block;
  font-size: 18px;
  color: #fff;
  font-weight: 600;
  letter-spacing: -0.01em;
  margin-bottom: 4px;
}
.footer__brand span {
  font-size: 11px;
  letter-spacing: .12em;
  color: rgba(255,255,255,.4);
}
.footer__cols {
  display: flex;
  gap: 64px;
  flex-wrap: wrap;
}
.footer__cols h5 {
  margin: 0 0 14px;
  font-size: 12px;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: rgba(255,255,255,.55);
  font-weight: 600;
}
.footer__cols a {
  display: block;
  margin-bottom: 8px;
  color: rgba(255,255,255,.7);
  transition: color .2s ease;
}
.footer__cols a:hover { color: #fff; }
.footer__bottom {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 20px var(--pad-x) 0;
  display: flex;
  justify-content: space-between;
  gap: 16px;
  font-size: 12px;
  color: rgba(255,255,255,.4);
  letter-spacing: .04em;
  flex-wrap: wrap;
}
@media (max-width: 720px) {
  .footer__inner { flex-direction: column; gap: 32px; }
  .footer__cols { gap: 32px; }
}

/* ==========================================================================
   Reveal on scroll
   ========================================================================== */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity .9s var(--ease), transform .9s var(--ease);
}
.reveal.is-in {
  opacity: 1;
  transform: translateY(0);
}

/* ---------- selection ---------- */
::selection { background: rgba(0,113,227,.18); color: var(--ink); }