/* ========================================
   KUROS — Luxury Minimal Corporate Site
   Dark Theme: Black Background, White Text
   ======================================== */

/* Reset & Base */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: 'Tenor Sans', "Helvetica Neue", "Arial", "Hiragino Kaku Gothic ProN", "Hiragino Sans", "Meiryo", sans-serif;
  color: #e5e5e5;
  background: #0a0a0a;
  line-height: 1.8;
  letter-spacing: 0.03em;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

ul {
  list-style: none;
}

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

/* ---- Typography ---- */
.section-title {
  font-family: 'Cormorant Garamond', serif;
  font-size: clamp(0.9rem, 1.5vw, 1.1rem);
  font-weight: 400;
  text-transform: uppercase;
  letter-spacing: 0.25em;
  margin-bottom: 60px;
  position: relative;
  display: inline-block;
  color: rgba(255, 255, 255, 0.9);
}

.section-title::before {
  content: '—';
  margin-right: 12px;
  color: rgba(255, 255, 255, 0.35);
  font-weight: 300;
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: -12px;
  left: 0;
  width: 40px;
  height: 1px;
  background: linear-gradient(90deg, rgba(255,255,255,0.4), rgba(255,255,255,0));
}

.section-light .section-title {
  color: #1a1a1a;
}

.section-light .section-title::after {
  background: #1a1a1a;
}

.section-lead {
  font-size: 0.875rem;
  font-weight: 400;
  color: #888;
  margin-bottom: 50px;
}

/* ========================================
   Header
   ======================================== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(10, 10, 10, 0.95);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  transition: all 0.4s ease;
}

.header-inner {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 60px;
  height: 70px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: flex;
  align-items: center;
}

.logo img {
  height: 22px;
  width: auto;
}

.nav-list {
  display: flex;
  gap: 36px;
}

.nav-link {
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  position: relative;
  padding: 6px 0;
  transition: color 0.4s ease, letter-spacing 0.4s ease;
  color: rgba(255, 255, 255, 0.8);
  display: flex;
  align-items: baseline;
  gap: 6px;
}

.nav-num {
  font-size: 0.55rem;
  font-weight: 300;
  letter-spacing: 0;
  color: rgba(255, 255, 255, 0.35);
  transition: color 0.4s ease;
  position: relative;
  top: -0.1em;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 1px;
  background: linear-gradient(90deg, rgba(255,255,255,0.6), rgba(255,255,255,0));
  transition: width 0.5s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.nav-link:hover::after {
  width: 100%;
}

.nav-link:hover {
  color: #fff;
  letter-spacing: 0.22em;
}

.nav-link:hover .nav-num {
  color: rgba(255, 255, 255, 0.4);
}

/* Hamburger */
.hamburger {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  width: 28px;
  height: 20px;
  position: relative;
  z-index: 1001;
}

.hamburger span {
  display: block;
  width: 100%;
  height: 1px;
  background: #fff;
  position: absolute;
  left: 0;
  transition: all 0.3s ease;
}

.hamburger span:first-child { top: 4px; }
.hamburger span:last-child { bottom: 4px; }

.hamburger.active span:first-child {
  top: 50%;
  transform: rotate(45deg);
}

.hamburger.active span:last-child {
  bottom: 50%;
  transform: rotate(-45deg);
}

/* ========================================
   Hero
   ======================================== */
.hero {
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  background: #0a0a0a;
  overflow: hidden;
}

.hero-video {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
}

.hero-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background:
    radial-gradient(ellipse at center, rgba(0,0,0,0.1) 0%, rgba(0,0,0,0.5) 100%),
    rgba(0, 0, 0, 0.25);
  z-index: 1;
  pointer-events: none;
}

.hero-content {
  text-align: center;
  position: relative;
  z-index: 2;
  pointer-events: none;
}

.hero-title {
  margin-bottom: 20px;
  animation: fadeInUp 1.2s ease forwards;
  opacity: 0;
}

.hero-logo {
  width: clamp(200px, 35vw, 450px);
  height: auto;
}

.hero-tagline {
  font-family: 'Cormorant Garamond', serif;
  font-size: clamp(0.85rem, 1.3vw, 1rem);
  font-weight: 300;
  letter-spacing: 0.25em;
  color: rgba(255, 255, 255, 0.75);
  text-shadow: 0 0 30px rgba(255, 255, 255, 0.15);
  animation: fadeInUp 1.2s ease 0.3s forwards;
  opacity: 0;
  position: relative;
  padding-bottom: 24px;
}

.hero-tagline::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 40px;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
  box-shadow: 0 0 8px rgba(255, 255, 255, 0.1);
}

.scroll-indicator {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  animation: fadeInUp 1.2s ease 0.6s forwards;
  opacity: 0;
  z-index: 2;
}

.scroll-indicator span {
  display: block;
  width: 1px;
  height: 60px;
  background: linear-gradient(to bottom, rgba(255, 255, 255, 0.8), transparent);
  box-shadow: 0 0 6px rgba(255, 255, 255, 0.3), 0 0 15px rgba(255, 255, 255, 0.1);
  animation: scrollLine 1.8s ease infinite;
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes scrollLine {
  0% { transform: scaleY(0); transform-origin: top; }
  50% { transform: scaleY(1); transform-origin: top; }
  51% { transform-origin: bottom; }
  100% { transform: scaleY(0); transform-origin: bottom; }
}

/* ========================================
   Sections
   ======================================== */
.section {
  padding: 120px 0;
  position: relative;
  overflow: hidden;
}

.section-bg-canvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  pointer-events: none;
}

.section-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 60px;
  position: relative;
  z-index: 1;
}

/* ---- Social Design Diagram ---- */
.social-design-section {
  padding-bottom: 40px;
}

.social-canvas-wrap {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 40px;
  position: relative;
  height: 80vh;
  min-height: 600px;
  max-height: 900px;
}

#social-canvas {
  width: 100%;
  height: 100%;
  display: block;
}

@media (max-width: 768px) {
  .social-canvas-wrap {
    padding: 0 8px;
    height: 70vh;
    min-height: 450px;
  }
}

/* ---- Startup Communication Diagram ---- */
.startup-comm-section {
  padding-bottom: 40px;
}

.startup-canvas-wrap {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 40px;
  position: relative;
  height: 85vh;
  min-height: 650px;
  max-height: 1000px;
}

#startup-canvas {
  width: 100%;
  height: 100%;
  display: block;
}

@media (max-width: 768px) {
  .startup-canvas-wrap {
    padding: 0 8px;
    height: 75vh;
    min-height: 500px;
  }
}

.section-light {
  background: #fff;
  color: #1a1a1a;
}

/* ---- Service ---- */
#service .section-inner {
  max-width: 1400px;
}

.service-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
}

.service-item {
  position: relative;
  display: flex;
  flex-direction: column;
  padding: 48px 40px;
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-right: none;
  background: rgba(255, 255, 255, 0);
  transition: background 0.5s ease, border-color 0.5s ease, transform 0.4s ease;
  text-decoration: none;
  color: inherit;
  overflow: hidden;
}

.service-item a {
  text-decoration: none;
  color: inherit;
  display: flex;
  flex-direction: column;
  height: 100%;
}

.service-item:nth-child(3n) {
  border-right: 1px solid rgba(255, 255, 255, 0.06);
}

.service-item::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: radial-gradient(ellipse at 50% 0%, rgba(255,255,255,0.04) 0%, transparent 70%);
  opacity: 0;
  transition: opacity 0.5s ease;
  pointer-events: none;
}

.service-item:hover {
  background: rgba(255, 255, 255, 0.02);
  border-color: rgba(255, 255, 255, 0.15);
  box-shadow: 0 8px 40px rgba(0, 0, 0, 0.3), 0 0 60px rgba(255, 255, 255, 0.02);
  transform: translateY(-2px);
}

.service-item:hover + .service-item {
  border-left-color: rgba(255, 255, 255, 0.15);
}

.service-item:hover::before {
  opacity: 1;
}

.service-header {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 32px;
}

.service-number {
  font-size: 2rem;
  font-weight: 300;
  letter-spacing: -0.02em;
  color: rgba(255, 255, 255, 0.2);
  line-height: 1;
  transition: color 0.5s ease, text-shadow 0.5s ease;
  text-shadow: 0 0 20px rgba(255, 255, 255, 0);
}

.service-item:hover .service-number {
  color: rgba(255, 255, 255, 0.5);
  text-shadow: 0 0 30px rgba(255, 255, 255, 0.15);
}

.service-line {
  flex: 1;
  height: 1px;
  background: rgba(255, 255, 255, 0.06);
  transition: background 0.5s ease;
}

.service-item:hover .service-line {
  background: rgba(255, 255, 255, 0.15);
}

.service-name {
  font-size: 1.25rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  margin-bottom: 20px;
  color: #fff;
  transition: letter-spacing 0.5s ease;
}

.service-item:hover .service-name {
  letter-spacing: 0.14em;
  text-shadow: 0 0 20px rgba(255, 255, 255, 0.1);
}

.service-desc {
  font-size: 0.8rem;
  font-weight: 400;
  line-height: 2.2;
  color: #888;
  flex: 1;
  transition: color 0.5s ease;
}

.service-item:hover .service-desc {
  color: #999;
}

.service-arrow {
  display: block;
  margin-top: 28px;
  font-size: 1.2rem;
  color: rgba(255, 255, 255, 0.1);
  transition: color 0.4s ease, transform 0.4s ease;
  align-self: flex-end;
}

.service-item:hover .service-arrow {
  color: rgba(255, 255, 255, 0.5);
  transform: translateX(6px) scale(1.2);
  text-shadow: 0 0 12px rgba(255, 255, 255, 0.3), -8px 0 20px rgba(255, 255, 255, 0.08);
}

/* ---- Clients ---- */
.clients-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: rgba(255, 255, 255, 0.06);
}

.client-item {
  background: #111;
  padding: 50px 30px;
  text-align: center;
  font-size: 0.8rem;
  font-weight: 400;
  letter-spacing: 0.15em;
  color: #777;
  transition: color 0.4s ease, background 0.4s ease, box-shadow 0.4s ease, transform 0.4s ease;
}

.client-item:hover {
  color: #fff;
  background: rgba(255, 255, 255, 0.03);
  box-shadow: 0 0 30px rgba(255, 255, 255, 0.02);
  transform: scale(1.02);
}

/* ---- News ---- */
.news-list {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.news-item {
  display: flex;
  align-items: center;
  gap: 24px;
  padding: 24px 0 24px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  transition: padding-left 0.4s cubic-bezier(0.16, 1, 0.3, 1), background 0.4s ease, box-shadow 0.4s ease, border-color 0.4s ease;
}

.news-item:hover {
  padding-left: 12px;
  background: rgba(255, 255, 255, 0.01);
  box-shadow: inset 3px 0 0 rgba(255, 255, 255, 0.15);
  border-bottom-color: rgba(255, 255, 255, 0.1);
}

.news-date {
  font-size: 0.75rem;
  font-weight: 400;
  letter-spacing: 0.05em;
  color: #777;
  flex-shrink: 0;
  width: 100px;
}

.news-tag {
  font-size: 0.65rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  border: 1px solid #444;
  padding: 3px 12px;
  flex-shrink: 0;
  color: #888;
}

.news-link {
  font-size: 0.85rem;
  font-weight: 400;
  color: #ddd;
}

/* ---- Representative Profile ---- */
.profile-inner {
  max-width: 1400px;
}

.profile-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: start;
}

/* Left Column */
.profile-left {
  position: relative;
  padding-top: 20px;
  position: sticky;
  top: 120px;
}

.profile-accent-line {
  width: 48px;
  height: 2px;
  background: linear-gradient(90deg, rgba(255,255,255,0.5), rgba(255,255,255,0));
  margin-bottom: 32px;
  transition: width 0.6s ease, box-shadow 0.6s ease;
  box-shadow: 0 0 8px rgba(255, 255, 255, 0);
}

.profile-left:hover .profile-accent-line {
  width: 72px;
  box-shadow: 0 0 15px rgba(255, 255, 255, 0.15), 0 0 30px rgba(255, 255, 255, 0.05);
}

.profile-big-text {
  display: flex;
  flex-direction: column;
  gap: 0;
  margin-bottom: 16px;
}

.profile-big-line {
  font-size: clamp(3.2rem, 6.5vw, 6rem);
  font-weight: 100;
  letter-spacing: 0.18em;
  line-height: 1.0;
  color: rgba(255, 255, 255, 0.04);
  transition: color 0.8s cubic-bezier(0.16, 1, 0.3, 1), letter-spacing 0.8s cubic-bezier(0.16, 1, 0.3, 1), text-shadow 0.8s cubic-bezier(0.16, 1, 0.3, 1);
  text-shadow: 0 0 40px rgba(255, 255, 255, 0);
}

.profile-left:hover .profile-big-line {
  color: rgba(255, 255, 255, 0.12);
  letter-spacing: 0.22em;
  text-shadow: 0 0 60px rgba(255, 255, 255, 0.06);
}

.profile-name-ja {
  font-size: 0.9rem;
  font-weight: 400;
  color: rgba(255, 255, 255, 0.5);
  letter-spacing: 0.15em;
  margin-bottom: 20px;
  transition: color 0.4s ease;
}

.profile-left:hover .profile-name-ja {
  color: rgba(255, 255, 255, 0.7);
}

.profile-tagline {
  font-size: 0.78rem;
  font-weight: 300;
  font-style: italic;
  letter-spacing: 0.06em;
  color: rgba(255, 255, 255, 0.2);
  margin-bottom: 24px;
  line-height: 1.6;
  transition: color 0.4s ease;
}

.profile-left:hover .profile-tagline {
  color: rgba(255, 255, 255, 0.35);
}

.profile-role {
  display: inline-block;
  font-size: 0.55rem;
  font-weight: 500;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.2);
  border: 1px solid rgba(255, 255, 255, 0.08);
  padding: 8px 20px;
  transition: all 0.5s ease;
}

.profile-left:hover .profile-role {
  border-color: rgba(255, 255, 255, 0.2);
  color: rgba(255, 255, 255, 0.45);
  padding: 8px 24px;
  box-shadow: 0 0 20px rgba(255, 255, 255, 0.04), inset 0 0 20px rgba(255, 255, 255, 0.02);
}

.profile-keywords {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 28px;
}

.profile-keyword {
  font-size: 0.58rem;
  font-weight: 400;
  letter-spacing: 0.08em;
  color: rgba(255, 255, 255, 0.15);
  padding: 4px 12px;
  border: 1px solid rgba(255, 255, 255, 0.04);
  border-radius: 2px;
  transition: all 0.4s ease;
}

.profile-left:hover .profile-keyword {
  color: rgba(255, 255, 255, 0.3);
  border-color: rgba(255, 255, 255, 0.1);
}

/* Right Column */
.profile-right {
  position: relative;
  padding-left: 48px;
  border-left: 1px solid rgba(255, 255, 255, 0.06);
}

.profile-right::before {
  content: '';
  position: absolute;
  left: -1px;
  top: 0;
  width: 1px;
  height: 0;
  background: linear-gradient(180deg, rgba(255,255,255,0.2), rgba(255,255,255,0));
  transition: height 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.profile-grid:hover .profile-right::before {
  height: 120px;
}

.profile-section-label {
  font-size: 0.6rem;
  font-weight: 600;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.2);
  margin-bottom: 16px;
  padding-bottom: 10px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
  transition: color 0.4s ease, border-color 0.4s ease;
}

.profile-section-label:hover {
  color: rgba(255, 255, 255, 0.4);
  border-bottom-color: rgba(255, 255, 255, 0.1);
}

.profile-career-summary {
  font-size: 0.8rem;
  font-weight: 400;
  line-height: 2.1;
  color: rgba(255, 255, 255, 0.45);
  margin-bottom: 36px;
  transition: color 0.4s ease;
}

.profile-career-summary:hover {
  color: rgba(255, 255, 255, 0.65);
}

.profile-section-label + .profile-career {
  margin-bottom: 32px;
}

.profile-career-summary + .profile-section-label {
  margin-top: 36px;
}

.profile-career + .profile-section-label {
  margin-top: 36px;
}

.profile-career-item {
  display: flex;
  gap: 20px;
  padding: 14px 0 14px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.03);
  transition: border-color 0.4s ease, padding-left 0.3s ease, background 0.4s ease;
}

.profile-career-item:hover {
  border-bottom-color: rgba(255, 255, 255, 0.08);
  padding-left: 8px;
  background: rgba(255, 255, 255, 0.01);
  box-shadow: inset 3px 0 0 rgba(255, 255, 255, 0.15);
}

.profile-career-year {
  font-size: 0.62rem;
  font-weight: 300;
  letter-spacing: 0.06em;
  color: rgba(255, 255, 255, 0.15);
  flex-shrink: 0;
  width: 52px;
  padding-top: 4px;
  font-variant-numeric: tabular-nums;
  transition: color 0.4s ease;
}

.profile-career-item:hover .profile-career-year {
  color: rgba(255, 255, 255, 0.5);
}

.profile-career-text {
  font-size: 0.78rem;
  font-weight: 400;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.4);
  transition: color 0.4s ease;
}

.profile-career-item:hover .profile-career-text {
  color: rgba(255, 255, 255, 0.85);
}

/* Linked career items */
a.profile-career-link {
  text-decoration: none;
  cursor: pointer;
  align-items: center;
}

.profile-link-arrow {
  font-size: 0.75rem;
  color: rgba(255, 255, 255, 0);
  flex-shrink: 0;
  margin-left: auto;
  padding-top: 4px;
  transition: color 0.4s ease, transform 0.4s ease;
}

a.profile-career-link:hover .profile-link-arrow {
  color: rgba(255, 255, 255, 0.5);
  transform: translateX(6px);
}

.profile-footer {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-top: 36px;
  padding-top: 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.04);
}

.profile-footer-line {
  width: 32px;
  height: 1px;
  background: linear-gradient(90deg, rgba(255,255,255,0.25), rgba(255,255,255,0));
  flex-shrink: 0;
}

.profile-footer-note {
  font-size: 0.68rem;
  font-weight: 300;
  color: rgba(255, 255, 255, 0.3);
  letter-spacing: 0.04em;
  line-height: 1.6;
}

/* ---- About ---- */
.about-inner {
  max-width: 1400px;
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: start;
}

.about-left {
  position: relative;
  padding-top: 20px;
}

/* ---- About Network Canvas ---- */
.about-network-canvas {
  width: 100%;
  height: 420px;
  display: block;
}

.about-right {
  position: relative;
  padding-left: 40px;
  border-left: 1px solid rgba(255, 255, 255, 0.06);
}

.about-info {
  border-top: none;
  max-width: 600px;
  margin: 0 auto;
}

.about-row {
  display: flex;
  padding: 20px 0 20px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  transition: padding-left 0.4s cubic-bezier(0.16, 1, 0.3, 1), background 0.4s ease, box-shadow 0.4s ease;
}

.about-row:hover {
  padding-left: 16px;
  background: rgba(255, 255, 255, 0.015);
  box-shadow: inset 3px 0 0 rgba(255, 255, 255, 0.2);
}

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

.about-row dt {
  width: 120px;
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  color: #555;
  flex-shrink: 0;
  transition: color 0.4s ease, text-shadow 0.4s ease;
}

.about-row:hover dt {
  color: #888;
}

.about-row dd {
  font-family: 'Cormorant Garamond', serif;
  font-size: 0.95rem;
  font-weight: 300;
  color: #ccc;
  transition: color 0.4s ease, text-shadow 0.4s ease;
}

.about-row:hover dd {
  color: #fff;
  text-shadow: 0 0 20px rgba(255, 255, 255, 0.1);
}

/* ---- Contact ---- */
.contact-inner {
  max-width: 1400px;
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: start;
}

.contact-left {
  position: relative;
  padding-top: 20px;
}

.contact-big-text {
  display: flex;
  flex-direction: column;
  gap: 0;
  margin-bottom: 40px;
}

.contact-big-line {
  font-size: clamp(2.5rem, 5vw, 4.5rem);
  font-weight: 200;
  letter-spacing: 0.15em;
  line-height: 1.1;
  color: rgba(255, 255, 255, 0.06);
  transition: color 0.6s ease;
}

.contact-left:hover .contact-big-line {
  color: rgba(255, 255, 255, 0.1);
}

.contact-message {
  font-size: 0.95rem;
  font-weight: 400;
  line-height: 2.2;
  color: #999;
  margin-bottom: 48px;
  letter-spacing: 0.05em;
}

.contact-details {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.contact-detail-row {
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 16px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
  transition: border-color 0.4s ease;
}

.contact-detail-row:hover {
  border-bottom-color: rgba(255, 255, 255, 0.1);
}

.contact-detail-label {
  font-size: 0.65rem;
  font-weight: 500;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: #444;
  width: 80px;
  flex-shrink: 0;
  transition: color 0.4s ease;
}

.contact-detail-row:hover .contact-detail-label {
  color: #777;
}

.contact-detail-value {
  font-size: 0.85rem;
  font-weight: 300;
  color: #888;
  letter-spacing: 0.03em;
  transition: color 0.4s ease;
}

.contact-detail-row:hover .contact-detail-value {
  color: #ddd;
}

.contact-right {
  position: relative;
  padding-left: 40px;
  border-left: 1px solid rgba(255, 255, 255, 0.06);
}

.contact-form {
  max-width: 100%;
  padding: 48px 40px;
  background: rgba(255, 255, 255, 0.015);
  border: 1px solid rgba(255, 255, 255, 0.06);
  box-shadow: 0 4px 40px rgba(0, 0, 0, 0.2);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  transition: border-color 0.5s ease, box-shadow 0.5s ease;
}

.contact-form:hover {
  border-color: rgba(255, 255, 255, 0.1);
  box-shadow: 0 8px 60px rgba(0, 0, 0, 0.3), 0 0 40px rgba(255, 255, 255, 0.01);
}

.form-group {
  margin-bottom: 32px;
}

.form-group label {
  display: block;
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: 10px;
  color: #777;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 12px 0 12px 0;
  border: none;
  border-bottom: 1px solid #333;
  background: transparent;
  font-family: inherit;
  font-size: 0.9rem;
  font-weight: 300;
  color: #e5e5e5;
  outline: none;
  transition: border-color 0.4s ease, padding-left 0.4s ease, box-shadow 0.4s ease;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  letter-spacing: 0.05em;
  transition: opacity 0.4s ease;
}

.form-group input:focus::placeholder,
.form-group textarea:focus::placeholder {
  opacity: 0.3;
}

.form-group input:focus,
.form-group textarea:focus {
  border-bottom-color: #fff;
  padding-left: 8px;
  box-shadow: 0 4px 15px rgba(255, 255, 255, 0.04);
}

.form-group textarea {
  resize: vertical;
}

.btn-submit {
  display: inline-block;
  padding: 14px 60px;
  border: 1px solid #fff;
  background: transparent;
  color: #fff;
  font-family: inherit;
  font-size: 0.75rem;
  font-weight: 400;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  cursor: pointer;
  transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  margin-top: 10px;
}

.btn-submit:hover {
  background: #fff;
  color: #0a0a0a;
  transform: translateY(-2px) scale(1.02);
  box-shadow: 0 6px 30px rgba(255, 255, 255, 0.15), 0 0 60px rgba(255, 255, 255, 0.05);
  letter-spacing: 0.25em;
}

/* ========================================
   Footer
   ======================================== */
.footer {
  padding: 60px 0 40px;
  border-top: none;
  position: relative;
}

.footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 120px;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.25), transparent);
  box-shadow: 0 0 10px rgba(255, 255, 255, 0.08);
}

.footer-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 60px;
  display: flex;
  justify-content: center;
  align-items: center;
}

.footer-logo img {
  height: 16px;
  width: auto;
}

.footer-copy {
  font-family: 'Tenor Sans', sans-serif;
  font-size: 0.65rem;
  font-weight: 300;
  letter-spacing: 0.08em;
  color: #555;
  transition: color 0.4s ease, letter-spacing 0.4s ease;
}

.footer-copy:hover {
  color: #888;
  letter-spacing: 0.08em;
}

/* ---- Header Scroll Enhancement ---- */
.header.scrolled {
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.4), 0 1px 0 rgba(255, 255, 255, 0.04);
}

/* ========================================
   Scroll Animations
   ======================================== */
.fade-in {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 1s cubic-bezier(0.16, 1, 0.3, 1), transform 1s cubic-bezier(0.16, 1, 0.3, 1);
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ========================================
   Responsive
   ======================================== */
@media (max-width: 768px) {
  .header-inner {
    padding: 0 24px;
    height: 60px;
  }

  .hamburger {
    display: block;
  }

  .nav {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background: #0a0a0a;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.4s ease;
    z-index: 1000;
  }

  .nav.open {
    opacity: 1;
    pointer-events: auto;
  }

  .nav-list {
    flex-direction: column;
    align-items: center;
    gap: 30px;
  }

  .nav-link {
    font-size: 0.875rem;
    letter-spacing: 0.22em;
    color: rgba(255, 255, 255, 0.5);
  }

  .nav-num {
    font-size: 0.6rem;
  }

  .hero {
    display: flex;
    align-items: center;
    justify-content: center;
  }

  .hero-content {
    text-align: center;
    width: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 0 24px;
  }

  .hero-logo {
    width: clamp(160px, 50vw, 280px);
  }

  .section {
    padding: 80px 0;
  }

  .section-inner {
    padding: 0 24px;
  }

  .section-title {
    margin-bottom: 40px;
  }

  .service-grid {
    grid-template-columns: 1fr;
    gap: 0;
  }

  .service-item {
    padding: 32px 24px;
    border-right: 1px solid rgba(255, 255, 255, 0.06);
    border-bottom: none;
  }

  .service-item:nth-child(3n) {
    border-right: 1px solid rgba(255, 255, 255, 0.06);
  }

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

  .news-item {
    flex-wrap: wrap;
    gap: 8px 16px;
  }

  .news-date {
    width: auto;
  }

  .news-link {
    width: 100%;
  }

  .profile-grid {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .profile-left {
    position: relative;
    top: auto;
  }

  .profile-right {
    padding-left: 0;
    border-left: none;
    border-top: 1px solid rgba(255, 255, 255, 0.06);
    padding-top: 32px;
  }

  .profile-right::before {
    display: none;
  }

  .about-grid {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .about-right {
    padding-left: 0;
    border-left: none;
    border-top: 1px solid rgba(255, 255, 255, 0.06);
    padding-top: 32px;
  }

  .about-network-canvas {
    height: 320px;
  }

  .contact-grid {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .contact-right {
    padding-left: 0;
    border-left: none;
    border-top: 1px solid rgba(255, 255, 255, 0.06);
    padding-top: 32px;
  }

  .about-row {
    flex-direction: column;
    gap: 6px;
  }

  .about-row dt {
    width: auto;
  }

  .footer-inner {
    padding: 0 24px;
    flex-direction: column;
    gap: 12px;
  }
}