/* ============================
   ANTENG · Design System
   Primary brand blue from logo: #0070D0
   ============================ */

:root {
  --brand-50:  #E8F2FE;
  --brand-100: #C7DDFB;
  --brand-200: #8FBCF7;
  --brand-300: #5BA8F0;
  --brand-400: #2E8FEC;
  --brand-500: #1B82E5;       /* primary */
  --brand-600: #0070D0;       /* logo */
  --brand-700: #0B5BAD;
  --brand-800: #074284;
  --brand-900: #052E5C;

  --ink-900: #0A1428;          /* near-black navy */
  --ink-800: #0F1F3D;
  --ink-700: #1A2E55;
  --ink-600: #344264;
  --ink-500: #5A6B85;
  --ink-400: #8696B0;
  --ink-300: #B7C2D6;
  --ink-200: #D8DFEC;
  --ink-100: #ECF0F7;
  --ink-50:  #F6F9FD;

  --surface: #FFFFFF;
  --surface-2: #F7FAFD;
  --line: rgba(15, 31, 61, 0.08);

  --glass: rgba(255, 255, 255, 0.65);
  --glass-strong: rgba(255, 255, 255, 0.85);

  --radius-sm: 8px;
  --radius: 14px;
  --radius-lg: 22px;
  --radius-xl: 32px;

  --shadow-sm: 0 2px 10px rgba(11, 91, 173, 0.06);
  --shadow: 0 12px 40px rgba(11, 91, 173, 0.08);
  --shadow-lg: 0 24px 60px rgba(7, 66, 132, 0.16);

  --font-zh: "Noto Sans TC", "PingFang TC", "Microsoft JhengHei", system-ui, sans-serif;
  --font-en: "Inter", system-ui, sans-serif;
  --font-mono: "JetBrains Mono", monospace;

  --max-w: 1200px;
  --section-y: clamp(72px, 10vw, 140px);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font-zh);
  font-weight: 400;
  color: var(--ink-800);
  background: var(--surface);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
  letter-spacing: 0.01em;
}

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

a { color: inherit; text-decoration: none; transition: color .2s ease; }
a:hover { color: var(--brand-600); }

::selection { background: var(--brand-200); color: var(--ink-900); }

/* container */
.container {
  width: 100%;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 24px;
}

/* ============================
   Animated Mesh Background
   ============================ */
.bg-mesh {
  position: fixed;
  inset: 0;
  z-index: -1;
  overflow: hidden;
  background: linear-gradient(180deg, #fafcff 0%, #f4f8ff 60%, #ffffff 100%);
}
.blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.55;
  will-change: transform;
}
.blob-1 { width: 520px; height: 520px; background: radial-gradient(circle, #5BA8F0, transparent 60%); top: -120px; left: -120px; animation: float1 22s ease-in-out infinite; }
.blob-2 { width: 460px; height: 460px; background: radial-gradient(circle, #1B82E5, transparent 60%); top: 30%; right: -160px; animation: float2 26s ease-in-out infinite; opacity: 0.35; }
.blob-3 { width: 380px; height: 380px; background: radial-gradient(circle, #8FBCF7, transparent 60%); bottom: -80px; left: 30%; animation: float3 30s ease-in-out infinite; opacity: 0.45; }

@keyframes float1 { 0%,100% { transform: translate(0,0) scale(1); } 50% { transform: translate(60px, 80px) scale(1.1); } }
@keyframes float2 { 0%,100% { transform: translate(0,0) scale(1); } 50% { transform: translate(-90px, 40px) scale(1.05); } }
@keyframes float3 { 0%,100% { transform: translate(0,0) scale(1); } 50% { transform: translate(40px, -80px) scale(1.15); } }

.grid-overlay {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(11,91,173,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(11,91,173,0.04) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse at center, black 30%, transparent 80%);
  -webkit-mask-image: radial-gradient(ellipse at center, black 30%, transparent 80%);
}

/* ============================
   Navigation
   ============================ */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 50;
  padding: 14px 0;
  transition: background .3s ease, box-shadow .3s ease, padding .3s ease;
}
.nav.scrolled {
  background: rgba(255,255,255,0.78);
  backdrop-filter: saturate(180%) blur(18px);
  -webkit-backdrop-filter: saturate(180%) blur(18px);
  box-shadow: 0 4px 24px rgba(11, 91, 173, 0.06);
  padding: 8px 0;
}
.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
}
.logo-img {
  height: 38px;
  width: auto;
  display: block;
}
.nav.scrolled .logo-img { height: 32px; transition: height .3s ease; }
/* Invert the white logo for dark backgrounds (logo is solid blue → just brighten + light variant) */
.logo-img--inverted {
  height: 40px;
  filter: brightness(0) invert(1) sepia(1) saturate(5) hue-rotate(190deg) brightness(1.1);
}
.nav-menu {
  display: flex;
  align-items: center;
  gap: 32px;
  font-weight: 500;
  font-size: 15px;
}
.nav-menu a { color: var(--ink-700); position: relative; }
.nav-menu a:not(.nav-cta):after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: -6px;
  height: 2px;
  background: var(--brand-500);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .25s ease;
}
.nav-menu a:not(.nav-cta):hover:after { transform: scaleX(1); }
.nav-cta { padding: 10px 20px; }
.nav-toggle {
  display: none;
  background: none;
  border: 0;
  width: 40px; height: 40px;
  padding: 0;
  cursor: pointer;
}
.nav-toggle span {
  display: block;
  width: 22px; height: 2px;
  background: var(--ink-800);
  margin: 5px auto;
  transition: transform .3s ease, opacity .3s ease;
}
.nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ============================
   Buttons
   ============================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 15px;
  letter-spacing: 0.02em;
  cursor: pointer;
  border: 1.5px solid transparent;
  transition: transform .2s ease, box-shadow .25s ease, background .2s ease, color .2s ease, border-color .2s ease;
  white-space: nowrap;
}
.btn-primary {
  background: linear-gradient(135deg, var(--brand-500), var(--brand-700));
  color: white;
  box-shadow: 0 10px 30px rgba(27,130,229,0.35);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 18px 40px rgba(27,130,229,0.45);
  color: white;
}
.btn-ghost {
  background: transparent;
  border-color: var(--ink-200);
  color: var(--ink-800);
}
.btn-ghost:hover {
  border-color: var(--brand-500);
  color: var(--brand-600);
  background: var(--brand-50);
}
.btn-block { width: 100%; }
.btn-pill {
  padding: 10px 20px;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--brand-500), var(--brand-700));
  color: white !important;
  font-size: 14px;
  font-weight: 600;
  box-shadow: 0 6px 18px rgba(27,130,229,0.3);
}
.btn-pill:hover { transform: translateY(-1px); }

/* ============================
   HERO
   ============================ */
.hero {
  position: relative;
  min-height: 100vh;
  padding: 140px 0 80px;
  display: flex;
  align-items: center;
  overflow: hidden;
}
.hero .container { position: relative; z-index: 2; }
.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 8px 16px;
  border-radius: 999px;
  background: var(--glass-strong);
  border: 1px solid var(--line);
  backdrop-filter: blur(8px);
  font-family: var(--font-en);
  font-size: 13px;
  color: var(--ink-700);
  margin-bottom: 28px;
  box-shadow: var(--shadow-sm);
}
.hero-tag .dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: #22C55E;
  box-shadow: 0 0 0 4px rgba(34,197,94,0.2);
  animation: pulse 2s ease-in-out infinite;
}
@keyframes pulse {
  0%,100% { box-shadow: 0 0 0 4px rgba(34,197,94,0.2); }
  50% { box-shadow: 0 0 0 8px rgba(34,197,94,0); }
}

.hero-title {
  font-size: clamp(40px, 7vw, 88px);
  font-weight: 900;
  line-height: 1.08;
  letter-spacing: -0.02em;
  color: var(--ink-900);
  margin: 0 0 28px;
}
.grad {
  background: linear-gradient(135deg, var(--brand-400) 0%, var(--brand-700) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero-sub {
  font-size: clamp(16px, 1.6vw, 19px);
  color: var(--ink-600);
  max-width: 640px;
  margin: 0 0 40px;
}
.hide-sm { display: inline; }
.hero-cta { display: flex; flex-wrap: wrap; gap: 16px; margin-bottom: 80px; }

.hero-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  padding: 32px;
  border-radius: var(--radius-lg);
  background: var(--glass-strong);
  border: 1px solid var(--line);
  backdrop-filter: blur(14px);
  box-shadow: var(--shadow);
}
.stat-num {
  font-family: var(--font-en);
  font-size: clamp(28px, 4vw, 44px);
  font-weight: 800;
  line-height: 1;
  background: linear-gradient(135deg, var(--brand-500), var(--brand-700));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  margin-bottom: 8px;
}
.stat-label { font-size: 14px; color: var(--ink-500); }

/* Floating cards */
.hero-floating {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 1;
}
.float-card {
  position: absolute;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 18px;
  background: rgba(255,255,255,0.92);
  border: 1px solid var(--line);
  border-radius: 999px;
  box-shadow: var(--shadow);
  font-size: 13px;
  font-weight: 500;
  color: var(--ink-700);
  backdrop-filter: blur(12px);
  animation: floatUp 6s ease-in-out infinite;
}
.float-card.f1 { top: 18%; right: 6%; animation-delay: 0s; }
.float-card.f2 { top: 52%; right: 4%; animation-delay: 1.5s; }
.float-card.f3 { top: 80%; right: 12%; animation-delay: 3s; }
@keyframes floatUp {
  0%,100% { transform: translateY(0); }
  50% { transform: translateY(-12px); }
}
.float-dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--brand-500);
  box-shadow: 0 0 0 4px rgba(27,130,229,0.2);
}
.float-bars { display: flex; align-items: flex-end; gap: 3px; height: 16px; }
.float-bars span {
  width: 3px; background: var(--brand-500); border-radius: 2px;
  animation: barGrow 1.5s ease-in-out infinite;
}
.float-bars span:nth-child(1) { height: 60%; animation-delay: 0s; }
.float-bars span:nth-child(2) { height: 90%; animation-delay: .2s; }
.float-bars span:nth-child(3) { height: 50%; animation-delay: .4s; }
.float-bars span:nth-child(4) { height: 100%; animation-delay: .6s; }
@keyframes barGrow {
  0%,100% { transform: scaleY(1); }
  50% { transform: scaleY(0.6); }
}
.float-chat { font-size: 16px; }

.scroll-cue {
  position: absolute;
  bottom: 30px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: var(--ink-500);
  font-family: var(--font-en);
  font-size: 11px;
  letter-spacing: 0.2em;
}
.scroll-line {
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, transparent, var(--ink-500));
  position: relative;
}
.scroll-line::after {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 14px;
  background: var(--brand-500);
  animation: scrollDot 2s ease-in-out infinite;
}
@keyframes scrollDot {
  0% { top: 0; opacity: 0; }
  30% { opacity: 1; }
  100% { top: 28px; opacity: 0; }
}

/* ============================
   Section base
   ============================ */
.section { padding: var(--section-y) 0; position: relative; }
.section-head { margin-bottom: 60px; }
.section-head.center { text-align: center; margin-left: auto; margin-right: auto; max-width: 720px; }
.eyebrow {
  display: inline-block;
  font-family: var(--font-en);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.18em;
  color: var(--brand-600);
  text-transform: uppercase;
  margin-bottom: 16px;
  padding: 6px 14px;
  background: var(--brand-50);
  border-radius: 999px;
}
.section-title {
  font-size: clamp(30px, 4.4vw, 52px);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.015em;
  color: var(--ink-900);
  margin: 0 0 18px;
}
.section-sub {
  font-size: clamp(15px, 1.4vw, 17px);
  color: var(--ink-500);
  max-width: 640px;
  margin: 0;
}
.section-head.center .section-sub { margin: 0 auto; }
.lead { font-size: 18px; color: var(--ink-700); }

/* ============================
   ABOUT
   ============================ */
.about-grid {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 80px;
  align-items: center;
}
.about-copy p { color: var(--ink-600); margin: 0 0 18px; }
.about-copy strong { color: var(--ink-900); font-weight: 700; }
.about-copy .quote {
  padding: 22px 26px;
  border-left: 3px solid var(--brand-500);
  background: linear-gradient(135deg, var(--brand-50), transparent);
  border-radius: 8px;
  color: var(--ink-800);
  font-style: normal;
  margin: 26px 0;
}

/* Orbit visual */
.about-visual { display: flex; justify-content: center; }
.orbit {
  position: relative;
  width: min(540px, 100%);
  aspect-ratio: 1/1;
  display: grid;
  place-items: center;
}
.orbit-core {
  width: 130px;
  height: 130px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--brand-500), var(--brand-700));
  display: grid;
  place-items: center;
  color: white;
  font-family: var(--font-en);
  font-weight: 800;
  letter-spacing: 0.05em;
  font-size: 16px;
  box-shadow: 0 20px 60px rgba(27,130,229,0.4), inset 0 -10px 30px rgba(0,0,0,0.15);
  z-index: 2;
  position: relative;
}
.orbit-core::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: 50%;
  background: var(--brand-400);
  filter: blur(30px);
  opacity: 0.4;
  z-index: -1;
}
.orbit-ring {
  position: absolute;
  border: 1.5px dashed rgba(27,130,229,0.22);
  border-radius: 50%;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}
.orbit-ring.r1 { width: 220px; height: 220px; }
.orbit-ring.r2 { width: 320px; height: 320px; }
.orbit-ring.r3 { width: 420px; height: 420px; }
.orbit-ring.r4 { width: 520px; height: 520px; border-color: rgba(27,130,229,0.12); }

/* 12 tags placed by --angle / --radius. Tags stay upright (no ring rotation) */
.orbit-tag {
  position: absolute;
  top: 50%;
  left: 50%;
  padding: 6px 14px;
  background: white;
  border: 1px solid var(--line);
  border-radius: 999px;
  font-family: var(--font-en);
  font-weight: 700;
  font-size: 13px;
  color: var(--brand-700);
  box-shadow: var(--shadow-sm);
  white-space: nowrap;
  transform:
    translate(-50%, -50%)
    rotate(var(--angle))
    translateX(var(--radius))
    rotate(calc(-1 * var(--angle)));
  animation: tagBreathe 6s ease-in-out infinite;
  animation-delay: calc(var(--angle) / 360 * 6s);
}
.orbit-tag:nth-child(odd)  { color: var(--brand-600); }
.orbit-tag:nth-child(even) { background: var(--brand-50); border-color: var(--brand-100); }

@keyframes tagBreathe {
  0%, 100% {
    transform:
      translate(-50%, -50%)
      rotate(var(--angle)) translateX(var(--radius)) rotate(calc(-1 * var(--angle)));
  }
  50% {
    transform:
      translate(-50%, -50%)
      rotate(var(--angle)) translateX(calc(var(--radius) - 6px)) rotate(calc(-1 * var(--angle)));
  }
}

/* ============================
   SERVICES
   ============================ */
.service-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
}
.service-card {
  position: relative;
  padding: 40px 36px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  transition: transform .35s ease, box-shadow .35s ease, border-color .35s ease;
  overflow: hidden;
}
.service-card::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--brand-400), var(--brand-700));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .35s ease;
}
.service-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: transparent; }
.service-card:hover::before { transform: scaleX(1); }

.service-icon {
  width: 64px; height: 64px;
  border-radius: var(--radius);
  display: grid; place-items: center;
  background: linear-gradient(135deg, var(--brand-50), white);
  color: var(--brand-600);
  margin-bottom: 22px;
  border: 1px solid var(--line);
}
.service-icon svg { width: 36px; height: 36px; }

.service-tag {
  display: inline-block;
  font-family: var(--font-en);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--brand-600);
  margin-bottom: 8px;
}
.service-card h3 {
  font-size: 22px;
  margin: 0 0 14px;
  color: var(--ink-900);
  font-weight: 700;
}
.service-card p { color: var(--ink-600); margin: 0 0 18px; font-size: 15px; }
.service-card strong { color: var(--ink-800); font-weight: 600; }
.service-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 8px;
  font-size: 14px;
  color: var(--ink-600);
}
.service-list li {
  padding-left: 22px;
  position: relative;
}
.service-list li::before {
  content: "";
  position: absolute;
  left: 0; top: 9px;
  width: 12px; height: 2px;
  background: var(--brand-500);
  border-radius: 2px;
}

/* ============================
   APPROACH
   ============================ */
.approach {
  background: linear-gradient(180deg, transparent, var(--surface-2) 30%, var(--surface-2) 70%, transparent);
}
.approach-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 60px;
}
.approach-card {
  padding: 40px 32px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  text-align: center;
  position: relative;
  transition: transform .3s ease, box-shadow .3s ease;
}
.approach-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.approach-card.highlight {
  background: linear-gradient(180deg, var(--brand-600), var(--brand-800));
  color: white;
  border-color: transparent;
  box-shadow: 0 30px 60px rgba(11,91,173,0.3);
  transform: translateY(-12px);
}
.approach-card.highlight:hover { transform: translateY(-18px); }
.approach-num {
  font-family: var(--font-en);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.2em;
  color: var(--brand-600);
  margin-bottom: 16px;
}
.approach-card.highlight .approach-num { color: rgba(255,255,255,0.7); }
.approach-emoji { font-size: 44px; margin-bottom: 16px; }
.approach-card h3 {
  font-size: 22px;
  margin: 0 0 14px;
  color: var(--ink-900);
  font-weight: 700;
}
.approach-card h3 small { display: block; font-size: 13px; color: var(--ink-500); margin-top: 4px; font-weight: 500; }
.approach-card.highlight h3 { color: white; }
.approach-card.highlight h3 small { color: rgba(255,255,255,0.7); }
.approach-card p { margin: 0; color: var(--ink-600); font-size: 15px; }
.approach-card.highlight p { color: rgba(255,255,255,0.85); }
.approach-card strong { color: var(--ink-900); font-weight: 700; }
.approach-card.highlight strong { color: white; }

/* ============================
   PRODUCT / BRAND SHOWCASE
   ============================ */
.brand-stack {
  display: grid;
  gap: 48px;
  margin-top: 60px;
}
.brand-card {
  display: grid;
  grid-template-columns: 1.15fr 1fr;
  gap: 56px;
  align-items: center;
  padding: 36px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-sm);
  transition: transform .35s ease, box-shadow .35s ease, border-color .35s ease;
  position: relative;
  overflow: hidden;
}
.brand-card::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, transparent 60%, rgba(27,130,229,0.06));
  opacity: 0;
  transition: opacity .35s ease;
  pointer-events: none;
}
.brand-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(27,130,229,0.25);
}
.brand-card:hover::before { opacity: 1; }
.brand-card.reverse { grid-template-columns: 1fr 1.15fr; }
.brand-card.reverse .brand-media { order: 2; }
.brand-card.reverse .brand-body  { order: 1; }

.brand-media {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 20px 50px rgba(11, 91, 173, 0.15);
  background: var(--surface-2);
  aspect-ratio: 16/10;
}
.brand-media::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: var(--radius-lg);
  box-shadow: inset 0 0 0 1px rgba(0,0,0,0.04);
  pointer-events: none;
}
.brand-media a { display: block; height: 100%; }
.brand-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top center;
  transition: transform .8s cubic-bezier(.16,1,.3,1);
}
.brand-card:hover .brand-media img { transform: scale(1.04); }

.brand-meta {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 14px;
  font-family: var(--font-en);
  font-size: 12px;
  letter-spacing: 0.14em;
}
.brand-num {
  display: inline-block;
  padding: 4px 10px;
  border-radius: 6px;
  background: linear-gradient(135deg, var(--brand-500), var(--brand-700));
  color: white;
  font-weight: 700;
}
.brand-domain {
  color: var(--ink-500);
  text-transform: lowercase;
  letter-spacing: 0.02em;
  font-family: var(--font-mono);
  font-size: 13px;
}

.brand-name {
  font-size: clamp(32px, 3.6vw, 44px);
  font-weight: 800;
  margin: 0 0 6px;
  color: var(--ink-900);
  letter-spacing: -0.01em;
  line-height: 1.05;
}
.brand-name span {
  font-family: var(--font-zh);
  color: var(--brand-600);
  margin-left: 4px;
  font-weight: 700;
}
.brand-tagline {
  font-size: 17px;
  color: var(--ink-600);
  margin: 0 0 16px;
  font-weight: 500;
}
.brand-desc {
  color: var(--ink-600);
  font-size: 15.5px;
  margin: 0 0 20px;
}
.brand-desc strong { color: var(--ink-900); font-weight: 700; }

.brand-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 26px;
}
.brand-tags span {
  padding: 6px 12px;
  background: var(--brand-50);
  border: 1px solid var(--brand-100);
  border-radius: 999px;
  font-size: 12.5px;
  color: var(--brand-700);
  font-weight: 500;
}
.brand-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-weight: 700;
  font-size: 15px;
  color: var(--brand-600);
  border-bottom: 2px solid transparent;
  padding-bottom: 2px;
  transition: gap .25s ease, border-color .25s ease;
}
.brand-link:hover {
  gap: 14px;
  border-bottom-color: var(--brand-600);
  color: var(--brand-700);
}

/* ============================
   FAQ
   ============================ */
.faq {
  background: linear-gradient(180deg, transparent, var(--surface-2) 30%, var(--surface-2) 70%, transparent);
}
.faq-list {
  max-width: 880px;
  margin: 56px auto 0;
  display: grid;
  gap: 14px;
}
.faq-item {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  transition: border-color .25s ease, box-shadow .25s ease;
}
.faq-item:hover { border-color: var(--brand-200); box-shadow: var(--shadow-sm); }
.faq-item[open] { border-color: var(--brand-200); box-shadow: var(--shadow-sm); }
.faq-item summary {
  list-style: none;
  cursor: pointer;
  padding: 22px 28px;
  font-weight: 600;
  font-size: 17px;
  color: var(--ink-900);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  transition: color .2s ease;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: "";
  flex-shrink: 0;
  width: 14px;
  height: 14px;
  border-right: 2px solid var(--brand-600);
  border-bottom: 2px solid var(--brand-600);
  transform: rotate(45deg);
  transition: transform .3s ease;
}
.faq-item[open] summary::after { transform: rotate(-135deg); }
.faq-item summary:hover { color: var(--brand-700); }
.faq-body {
  padding: 0 28px 24px;
  color: var(--ink-600);
  font-size: 15.5px;
  line-height: 1.75;
  animation: faqFade .35s cubic-bezier(.16,1,.3,1);
}
.faq-body p { margin: 0 0 10px; }
.faq-body p:last-child { margin: 0; }
.faq-body strong { color: var(--ink-900); font-weight: 700; }
.faq-body ol, .faq-body ul { margin: 8px 0 0; padding-left: 22px; }
.faq-body li { margin-bottom: 6px; }
.faq-body a { color: var(--brand-600); border-bottom: 1px solid var(--brand-200); }
.faq-body a:hover { color: var(--brand-700); border-color: var(--brand-500); }

@keyframes faqFade {
  from { opacity: 0; transform: translateY(-4px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ============================
   CONTACT
   ============================ */
.contact-card {
  padding: clamp(40px, 6vw, 72px);
  background: linear-gradient(135deg, #ffffff 0%, var(--brand-50) 100%);
  border: 1px solid var(--brand-100);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow);
  position: relative;
  overflow: hidden;
}
.contact-card::before {
  content: "";
  position: absolute;
  width: 360px; height: 360px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(27,130,229,0.18), transparent 65%);
  top: -120px; right: -120px;
  filter: blur(20px);
}
.contact-head { text-align: center; position: relative; }
.contact-head .section-sub { margin: 0 auto 32px; }
.contact-actions {
  display: flex;
  gap: 14px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 48px;
}

.contact-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  position: relative;
}
.contact-list--5 { grid-template-columns: repeat(5, 1fr); }
.contact-list .ci-sub {
  display: block;
  margin-top: 4px;
  font-size: 13px;
  color: var(--ink-500);
  font-weight: 500;
}
.contact-list .ci-sub:hover { color: var(--brand-600); }
.contact-list .ci-hint {
  display: block;
  margin-top: 6px;
  font-size: 11px;
  color: var(--ink-400);
  letter-spacing: 0.04em;
}
.contact-list li {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  padding: 20px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease;
}
.contact-list li:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-sm);
  border-color: var(--brand-200);
}
.ci-icon { font-size: 22px; line-height: 1; padding-top: 2px; }
.ci-label { font-size: 12px; color: var(--ink-500); margin-bottom: 4px; letter-spacing: 0.05em; }
.ci-value { font-weight: 600; color: var(--ink-900); font-size: 15px; word-break: break-word; }
a.ci-value:hover { color: var(--brand-600); }

/* ============================
   FOOTER
   ============================ */
.footer {
  background: linear-gradient(180deg, var(--ink-900), #050B17);
  color: var(--ink-300);
  padding: 80px 0 0;
  margin-top: 60px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1fr;
  gap: 60px;
}
.footer-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 18px;
}
.footer-logo .logo-img { height: 40px; }
.footer-brand p { margin: 0 0 12px; color: var(--ink-300); font-size: 14px; line-height: 1.7; }
.footer-mission { color: var(--ink-400) !important; font-size: 13px !important; }
.footer-col h4 {
  font-size: 13px;
  font-weight: 700;
  color: white;
  margin: 0 0 18px;
  letter-spacing: 0.08em;
}
.footer-col a, .footer-col span {
  display: block;
  font-size: 14px;
  color: var(--ink-300);
  margin-bottom: 10px;
  transition: color .2s ease, transform .2s ease;
}
.footer-col a:hover { color: var(--brand-300); transform: translateX(3px); }
.footer-bottom {
  margin-top: 60px;
  padding: 24px 0;
  border-top: 1px solid rgba(255,255,255,0.08);
  font-size: 12px;
  color: var(--ink-400);
}
.footer-bottom .container { display: flex; justify-content: space-between; gap: 24px; flex-wrap: wrap; }
.footer-meta { font-family: var(--font-en); }

/* ============================
   REVEAL ANIMATIONS
   ============================ */
[data-reveal] {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity .8s cubic-bezier(.16,1,.3,1), transform .8s cubic-bezier(.16,1,.3,1);
}
[data-reveal].in {
  opacity: 1;
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    transition-duration: 0.001ms !important;
  }
  [data-reveal] { opacity: 1; transform: none; }
}

/* ============================
   RESPONSIVE
   ============================ */
@media (max-width: 1024px) {
  .about-grid { grid-template-columns: 1fr; gap: 60px; }
  .brand-card, .brand-card.reverse {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .brand-card.reverse .brand-media { order: 1; }
  .brand-card.reverse .brand-body { order: 2; }
  .contact-list,
  .contact-list--5 { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 40px; }
  .hero-floating { display: none; }
}

@media (max-width: 768px) {
  .nav-menu {
    position: fixed;
    top: 64px; left: 0; right: 0;
    background: rgba(255,255,255,0.98);
    backdrop-filter: blur(14px);
    flex-direction: column;
    align-items: stretch;
    padding: 24px;
    gap: 8px;
    transform: translateY(-120%);
    transition: transform .35s ease;
    box-shadow: var(--shadow);
    z-index: 40;
  }
  .nav-menu.open { transform: translateY(0); }
  .nav-menu a { padding: 12px 8px; }
  .nav-menu .nav-cta { margin-top: 8px; text-align: center; }
  .nav-toggle { display: block; }

  .hide-sm { display: none; }
  .hero { padding: 120px 0 60px; min-height: auto; }
  .hero-stats { grid-template-columns: repeat(2, 1fr); padding: 24px; gap: 16px; }
  .service-grid { grid-template-columns: 1fr; }
  .approach-grid { grid-template-columns: 1fr; }
  .approach-card.highlight { transform: none; }
  .approach-card.highlight:hover { transform: translateY(-4px); }
  .contact-list,
  .contact-list--5 { grid-template-columns: 1fr; }
  .contact-actions { flex-direction: column; }
  .contact-actions .btn { width: 100%; }
  .brand-card { padding: 24px; }
  .footer-grid { grid-template-columns: 1fr; gap: 36px; }
  .footer-bottom .container { flex-direction: column; gap: 8px; text-align: center; }
}

@media (max-width: 480px) {
  .container { padding: 0 18px; }
  .hero-cta .btn { flex: 1; }
  .service-card { padding: 32px 24px; }
  .logo-img { height: 32px; }
}