@font-face {
  font-family: "Neue Haas Display";
  src: url("../assets/fonts/NeueHaasDisplayLight.ttf") format("truetype");
  font-weight: 300;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "Neue Haas Display";
  src: url("../assets/fonts/NeueHaasDisplayRoman.ttf") format("truetype");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "Neue Haas Display";
  src: url("../assets/fonts/NeueHaasDisplayMediu.ttf") format("truetype");
  font-weight: 500;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "Neue Haas Display";
  src: url("../assets/fonts/NeueHaasDisplayBold.ttf") format("truetype");
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}

:root {
  --blue-950: #062343;
  --blue-900: #082d57;
  --blue-800: #0c426f;
  --blue-600: #1675ad;
  --blue-400: #57b7df;
  --blue-200: #b9e3f3;
  --blue-100: #e9f6fb;
  --blue-050: #f4fafd;
  --white: #ffffff;
  --card-surface: #f4f5f6;
  --ink: #102b43;
  --muted: #587087;
  --line: #cfe2ec;
  --header-height: 82px;
  --shell: 1240px;
  --section-space: clamp(88px, 11vw, 164px);
  --shadow: 0 28px 80px rgba(8, 45, 87, .12);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  overflow-x: hidden;
  color: var(--ink);
  background: var(--white);
  font-family: "Neue Haas Display", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  text-rendering: optimizeLegibility;
}
button, a { font: inherit; }
a { color: inherit; }
img, svg { display: block; max-width: 100%; }
.shell { width: min(var(--shell), calc(100% - 48px)); margin-inline: auto; }
.section { padding-block: var(--section-space); }
.skip-link {
  position: fixed;
  z-index: 1000;
  top: 10px;
  left: 10px;
  padding: 10px 16px;
  color: var(--white);
  background: var(--blue-950);
  transform: translateY(-150%);
}
.skip-link:focus { transform: translateY(0); }
:focus-visible { outline: 3px solid var(--blue-400); outline-offset: 4px; }

.site-header {
  position: sticky;
  z-index: 100;
  top: 12px;
  height: var(--header-height);
  background: transparent;
  pointer-events: none;
}
.header-inner {
  display: flex;
  width: min(1520px, calc(100% - 64px));
  height: 70px;
  margin-top: 0;
  padding-inline: 24px;
  background: rgba(255,255,255,.62);
  border: 0;
  border-radius: 14px;
  box-shadow:
    0 1px 2px rgba(8,45,87,.04),
    0 10px 28px rgba(8,45,87,.08);
  align-items: center;
  justify-content: space-between;
  backdrop-filter: blur(18px) saturate(145%);
  -webkit-backdrop-filter: blur(18px) saturate(145%);
  pointer-events: auto;
}
.brand { display: inline-flex; min-width: 120px; align-items: center; }
.brand img { width: 92px; height: auto; }
.language-switcher { display: flex; min-height: 44px; align-items: center; }
.language-switcher > span { width: 1px; height: 17px; background: var(--line); }
.language-button {
  min-width: 48px;
  min-height: 44px;
  padding: 0;
  color: #7a8da0;
  background: transparent;
  border: 0;
  font-weight: 500;
  letter-spacing: .08em;
  cursor: pointer;
}
.language-button:hover { color: var(--blue-600); }
.language-button.active { color: var(--blue-900); font-weight: 700; }

.hero {
  position: relative;
  min-height: calc(100vh - var(--header-height));
  display: flex;
  overflow: hidden;
  align-items: center;
  background: var(--white);
}
.hero-grid-pattern, .global-grid {
  position: absolute;
  inset: 0;
  opacity: .38;
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 72px 72px;
  mask-image: linear-gradient(90deg, transparent, #000 60%);
}
.hero-grid-pattern {
  display: none;
}
.hero-layout {
  position: relative;
  z-index: 1;
  display: flex;
  width: min(1520px, calc(100% - 64px));
  align-items: center;
  justify-content: center;
  min-height: calc(100dvh - var(--header-height) - 100px);
  margin-block: 50px;
  padding: clamp(38px, 5vh, 58px) clamp(28px, 5vw, 76px);
  background:
    radial-gradient(ellipse 82% 78% at 50% 112%, rgba(74, 177, 238, .34) 0%, rgba(145, 210, 247, .22) 38%, rgba(218, 239, 251, .14) 65%, rgba(255,255,255,0) 84%),
    linear-gradient(180deg, #f8f9fa 0%, #f5f8fa 52%, #edf6fb 100%);
  border: 1px solid rgba(12,66,111,.1);
  border-radius: 18px;
  box-shadow:
    0 2px 3px rgba(8,45,87,.035),
    0 16px 38px rgba(8,45,87,.075),
    0 44px 90px rgba(8,45,87,.11),
    inset 0 1px 0 rgba(255,255,255,1);
}
.hero-content, .approach-copy, .global-copy { min-width: 0; }
.hero-content {
  position: relative;
  z-index: 1;
  display: grid;
  width: min(100%, 1220px);
  margin-inline: auto;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: clamp(56px, 8vw, 130px);
  align-items: center;
  text-align: left;
}
.kicker {
  margin: 0 0 24px;
  color: var(--blue-600);
  font-size: .78rem;
  font-weight: 700;
  letter-spacing: .16em;
  text-transform: uppercase;
}
h1, h2, h3 { margin-top: 0; color: var(--blue-950); line-height: 1.04; }
h1 {
  max-width: 820px;
  margin: 0 0 26px;
  font-size: clamp(3.15rem, 4.7vw, 5rem);
  font-weight: 500;
  letter-spacing: -.055em;
  overflow-wrap: break-word;
}
h2 {
  margin-bottom: 30px;
  font-size: clamp(2.6rem, 5vw, 5.3rem);
  font-weight: 500;
  letter-spacing: -.05em;
}
h3 { font-size: 1.55rem; font-weight: 500; letter-spacing: -.02em; }
.hero-description {
  max-width: 690px;
  margin: 0;
  color: var(--muted);
  font-size: clamp(1.08rem, 1.5vw, 1.3rem);
  line-height: 1.55;
}
.primary-link {
  position: relative;
  display: inline-flex;
  min-width: 238px;
  min-height: 70px;
  padding: 9px 9px 9px 25px;
  gap: 24px;
  overflow: hidden;
  color: var(--white);
  background: var(--blue-950);
  border: 1px solid rgba(255,255,255,.16);
  border-radius: 14px;
  align-items: center;
  justify-content: space-between;
  white-space: nowrap;
  font-size: 1.02rem;
  font-weight: 500;
  letter-spacing: 0;
  text-decoration: none;
  box-shadow: 0 18px 40px rgba(6,35,67,.2);
  isolation: isolate;
  transition: border-color .3s, box-shadow .3s, transform .3s cubic-bezier(.2,.8,.2,1);
}
.primary-link::before {
  content: "";
  position: absolute;
  z-index: -1;
  inset: 0;
  background: linear-gradient(110deg, transparent 0 38%, rgba(87,183,223,.3) 52%, transparent 66%);
  transform: translateX(-115%);
  transition: transform .55s ease;
}
.primary-link svg {
  width: 50px;
  height: 50px;
  padding: 14px;
  color: var(--blue-950);
  background: var(--blue-200);
  border-radius: 10px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.9;
  transform: rotate(0deg);
  transition: transform .3s cubic-bezier(.2,.8,.2,1);
}
.primary-link:hover {
  border-color: rgba(87,183,223,.75);
  box-shadow: 0 24px 48px rgba(6,35,67,.27);
  transform: translateY(-5px);
}
.primary-link:hover::before { transform: translateX(115%); }
.primary-link:hover svg { transform: rotate(-45deg); }
.primary-link:active {
  box-shadow: 0 10px 24px rgba(6,35,67,.2);
  transform: translateY(-1px) scale(.99);
}
.split-layout { display: grid; grid-template-columns: .32fr 1fr; gap: clamp(50px, 9vw, 140px); }
.approach {
  position: relative;
  overflow: hidden;
  background: var(--white);
}
.approach::after {
  content: "";
  position: absolute;
  z-index: 0;
  right: clamp(-340px, -16vw, -220px);
  bottom: clamp(-100px, -5vw, -45px);
  width: clamp(760px, 76vw, 1260px);
  aspect-ratio: 724 / 300;
  background: url("../assets/images/logo-siyah.png") center / contain no-repeat;
  opacity: .052;
  filter: grayscale(1);
  pointer-events: none;
  mask-image: linear-gradient(115deg, transparent 0%, rgba(0,0,0,.48) 27%, #000 64%);
}
.approach .split-layout { position: relative; z-index: 1; }
.section-label { display: flex; gap: 18px; align-items: flex-start; color: var(--blue-600); }
.section-label span { font-size: .75rem; letter-spacing: .12em; }
.section-label p { margin: 0; font-size: .78rem; font-weight: 700; letter-spacing: .14em; text-transform: uppercase; }
.approach-copy h2 { max-width: 950px; }
.large-copy {
  max-width: 880px;
  margin: 0;
  color: var(--muted);
  font-size: clamp(1.22rem, 2vw, 1.75rem);
  line-height: 1.55;
}
.approach-detail { display: grid; grid-template-columns: 70px 1fr; gap: 24px; max-width: 710px; margin-top: 56px; align-items: start; }
.approach-detail span { height: 1px; margin-top: 13px; background: var(--blue-400); }
.approach-detail p { margin: 0; color: var(--muted); }

.principles { color: var(--white); background: var(--blue-950); }
.principles h2, .principles h3 { color: var(--white); }
.section-top { display: grid; grid-template-columns: .65fr 1.35fr; gap: 50px; margin-bottom: 78px; align-items: start; }
.section-top h2 { max-width: 780px; margin: 0; }
.light-label { color: var(--blue-400); }
.principles-grid { display: grid; grid-template-columns: repeat(4, 1fr); border-top: 1px solid rgba(185,227,243,.24); border-left: 1px solid rgba(185,227,243,.24); }
.principle {
  position: relative;
  min-height: 370px;
  padding: 36px 30px;
  border-right: 1px solid rgba(185,227,243,.24);
  border-bottom: 1px solid rgba(185,227,243,.24);
  transition: background .3s;
}
.principle:hover { background: var(--blue-800); }
.principle-index { color: var(--blue-400); font-size: .72rem; letter-spacing: .12em; }
.principle svg {
  width: 46px;
  margin: 64px 0 44px;
  fill: none;
  stroke: var(--blue-400);
  stroke-width: 1.5;
  stroke-linecap: square;
  stroke-linejoin: miter;
}
.principle h3 { margin-bottom: 17px; }
.principle p { margin: 0; color: var(--blue-200); line-height: 1.55; }

.global { position: relative; overflow: hidden; background: var(--blue-050); }
.global-grid { opacity: .3; mask-image: radial-gradient(circle at 22% 50%, #000, transparent 48%); }
.global-layout { position: relative; display: grid; grid-template-columns: .9fr 1.1fr; gap: clamp(60px, 9vw, 130px); align-items: center; }
.global-visual { display: grid; place-items: center; }
.global-visual svg {
  width: min(100%, 510px);
  fill: none;
  stroke: var(--blue-400);
  stroke-width: 1.2;
  overflow: visible;
  filter: drop-shadow(0 20px 35px rgba(22,117,173,.08));
  transition: transform .6s cubic-bezier(.2,.8,.2,1), filter .6s;
}
.global-visual:hover svg {
  filter: drop-shadow(0 28px 42px rgba(22,117,173,.15));
  transform: translateY(-6px) scale(1.015);
}
.globe-line {
  stroke-dasharray: 1500;
  stroke-dashoffset: 1500;
}
.global-visual.visible .globe-line {
  animation: globe-draw 1.7s cubic-bezier(.45,0,.2,1) forwards;
}
.global-visual.visible .orbit-ring {
  transform-box: fill-box;
  transform-origin: center;
}
.global-visual.visible .orbit-ring-one {
  animation: globe-draw 1.7s cubic-bezier(.45,0,.2,1) forwards, orbit-drift 18s ease-in-out 1.7s infinite alternate;
}
.global-visual.visible .orbit-ring-two {
  animation: globe-draw 1.7s cubic-bezier(.45,0,.2,1) forwards, orbit-drift-reverse 22s ease-in-out 1.7s infinite alternate;
}
.global-visual .globe-points { fill: var(--blue-600); stroke: var(--white); stroke-width: 3; }
.global-visual.visible .globe-points circle {
  transform-box: fill-box;
  transform-origin: center;
  animation: point-pulse 3.2s ease-in-out infinite;
}
.global-visual.visible .globe-points circle:nth-child(2) { animation-delay: .8s; }
.global-visual.visible .globe-points circle:nth-child(3) { animation-delay: 1.6s; }
.global-visual.visible .globe-points circle:nth-child(4) { animation-delay: 2.4s; }
.global-copy .section-label { margin-bottom: 45px; }
.global-copy h2 { max-width: 720px; }
.global-note {
  display: flex;
  gap: 16px;
  margin-top: 48px;
  padding-top: 25px;
  color: var(--blue-800);
  border-top: 1px solid var(--line);
  align-items: center;
  font-weight: 500;
}
.global-note svg { width: 24px; fill: none; stroke: var(--blue-600); stroke-width: 1.6; }

.contact {
  position: relative;
  min-height: 70vh;
  display: grid;
  overflow: hidden;
  color: var(--white);
  background: var(--blue-900);
  place-items: center;
}
.contact-lines {
  position: absolute;
  inset: -30%;
  opacity: .13;
  background: repeating-radial-gradient(circle at 50% 50%, transparent 0 70px, var(--blue-200) 71px 72px);
}
.contact-content { position: relative; z-index: 1; text-align: center; }
.contact .kicker { color: var(--blue-200); }
.contact h2 { margin-bottom: 20px; color: var(--white); font-size: clamp(3.5rem, 8vw, 8.5rem); }
.contact-content > p:not(.kicker) { margin: 0 0 50px; color: var(--blue-200); font-size: 1.2rem; }
.email-link {
  display: inline-flex;
  gap: 28px;
  padding-bottom: 10px;
  color: var(--white);
  border-bottom: 1px solid var(--blue-400);
  align-items: center;
  font-size: clamp(1.35rem, 3vw, 2.8rem);
  text-decoration: none;
}
.email-link svg { width: 34px; fill: none; stroke: currentColor; stroke-width: 1.4; transition: transform .25s; }
.email-link:hover svg { transform: translate(4px, -4px); }
.site-footer { padding: 30px 0; color: var(--blue-200); background: var(--blue-950); }
.footer-inner { display: flex; gap: 28px; align-items: center; justify-content: space-between; }
.footer-inner img { width: 170px; height: 72px; object-fit: contain; }
.footer-inner p { margin: 0; font-size: .86rem; }

.reveal { opacity: 0; transform: translateY(24px); transition: opacity .7s ease, transform .7s ease; }
.reveal.visible { opacity: 1; transform: translateY(0); }
.gsap-active .reveal { opacity: 1; transform: none; transition: none; }
.gsap-text-reveal { will-change: transform, opacity, clip-path; }

@keyframes globe-draw {
  to { stroke-dashoffset: 0; }
}
@keyframes orbit-drift {
  from { transform: rotate(-2deg); }
  to { transform: rotate(7deg); }
}
@keyframes orbit-drift-reverse {
  from { transform: rotate(3deg); }
  to { transform: rotate(-6deg); }
}
@keyframes point-pulse {
  0%, 100% { opacity: .7; transform: scale(.82); }
  50% { opacity: 1; transform: scale(1.35); }
}

@media (max-width: 1020px) {
  .hero-layout { min-height: calc(100dvh - var(--header-height) - 76px); margin-block: 38px; }
  .hero-content { max-width: 900px; gap: 40px; }
  .principles-grid { grid-template-columns: repeat(2, 1fr); }
  .global-layout { grid-template-columns: .8fr 1.2fr; }
}

@media (max-width: 760px) {
  :root { --header-height: 66px; }
  .site-header { top: 8px; }
  .shell { width: min(var(--shell), calc(100% - 32px)); }
  .header-inner {
    width: calc(100% - 24px);
    height: 58px;
    margin-top: 0;
    padding-inline: 14px;
    border-radius: 10px;
  }
  .brand img { width: 80px; }
  .hero-layout {
    width: calc(100% - 24px);
    min-height: calc(100svh - var(--header-height) - 32px);
    margin-block: 16px;
    padding: 48px 20px 56px;
    border-radius: 12px;
  }
  .hero-content {
    grid-template-columns: 1fr;
    gap: 36px;
    align-items: start;
  }
  .split-layout, .section-top, .global-layout { grid-template-columns: 1fr; }
  .split-layout, .global-layout { gap: 48px; }
  .section-top { gap: 32px; margin-bottom: 54px; }
  .principle { min-height: 330px; }
  .global-visual { order: 2; }
  .global-copy { order: 1; }
  .contact { min-height: 620px; }
}

@media (min-width: 1021px) and (max-height: 820px) {
  .hero-layout {
    min-height: calc(100dvh - var(--header-height) - 68px);
    margin-block: 34px;
    padding-block: 24px 34px;
  }
  h1 {
    margin-bottom: 20px;
    font-size: clamp(3.2rem, 5.1vw, 5.15rem);
  }
  .hero-description { margin-bottom: 26px; }
}

@media (max-width: 520px) {
  .shell { width: min(var(--shell), calc(100% - 24px)); }
  h1 { font-size: clamp(2.85rem, 15vw, 4.1rem); }
  h2 { font-size: clamp(2.35rem, 12vw, 3.5rem); }
  .hero-layout { padding-top: 52px; }
  .hero .kicker { max-width: 270px; font-size: .7rem; line-height: 1.55; }
  .approach::after {
    right: -245px;
    bottom: 8px;
    width: 590px;
    opacity: .04;
  }
  .primary-link {
    width: fit-content;
    max-width: 100%;
    min-width: 0;
    min-height: 56px;
    padding: 6px 7px 6px 18px;
    gap: 14px;
    font-size: 1rem;
    justify-self: start;
    justify-content: flex-start;
  }
  .primary-link svg { width: 40px; height: 40px; padding: 11px; border-radius: 9px; }
  .principles-grid { grid-template-columns: 1fr; }
  .principle { min-height: 295px; }
  .principle svg { margin: 42px 0 32px; }
  .approach-detail { grid-template-columns: 38px 1fr; }
  .email-link { gap: 12px; font-size: clamp(1.18rem, 6vw, 1.8rem); }
  .email-link svg { width: 25px; }
  .footer-inner { flex-direction: column; text-align: center; }
}

@media (hover: none) {
  .primary-link:hover {
    border-color: rgba(255,255,255,.16);
    box-shadow: 0 18px 40px rgba(6,35,67,.2);
    transform: none;
  }
  .primary-link:hover::before { transform: translateX(-115%); }
  .primary-link:hover svg { transform: none; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    scroll-behavior: auto !important;
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
  }
  .reveal { opacity: 1; transform: none; }
}