/* --- Cofoundary Brand System (Resend & Linear Look) --- */
:root {
  --primary-navy: #050B16;
  --darkest-bg: #000000;
  --brand-blue: #1E70FF;
  --brand-blue-glow: rgba(30, 112, 255, 0.3);
  --off-white: #F8FAFC;
  --text-primary: #FFFFFF;
  --text-secondary: #8E9CAE;
  --text-tertiary: #4A5768;
  --border-subtle: rgba(255, 255, 255, 0.5);
  --border-active: rgba(30, 112, 255, 0.4);
  --font-main: 'Plus Jakarta Sans', sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
  --transition-smooth: all 0.5s cubic-bezier(0.16, 1, 0.3, 1);
  --mouse-x: 0px;
  --mouse-y: 0px;
}

/* --- Base & Reset --- */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  scroll-behavior: smooth;
}

html {
  overflow-x: hidden;
}

body {
  font-family: var(--font-main);
  background-color: var(--darkest-bg);
  color: var(--text-primary);
  line-height: 1.5;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

.main-content {
  overflow-x: hidden;
}

/* --- Language Toggle Visibility --- */
body.lang-kr .txt-en { display: none; }
body.lang-en .txt-kr { display: none; }

/* --- Responsive Copy Wrapping --- */
.txt-kr,
.txt-en,
h1,
h2,
h3,
h4,
p {
  overflow-wrap: break-word;
}

.txt-kr,
body.lang-kr h1,
body.lang-kr h2,
body.lang-kr h3,
body.lang-kr h4,
body.lang-kr p {
  word-break: keep-all;
}

.hero-title,
.section-header h2,
.problem-footer-copy {
  text-wrap: balance;
}

.section-desc,
.hero-subtitle,
.problem-footer-note {
  text-wrap: pretty;
}

.br-mobile {
  display: none;
}

.copy-line {
  display: block;
}

/* --- Fine Dot Grid Background (Resend Style) --- */
.grid-background {
  position: fixed;
  inset: 0;
  z-index: -2;
  background-image: 
    radial-gradient(rgba(255, 255, 255, 0.08) 1px, transparent 1px);
  background-size: 16px 16px;
  opacity: 0.6;
  pointer-events: none;
}

/* Cursor Glow Spotlight */
.glow-cursor {
  position: fixed;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(30, 112, 255, 0.28) 0%, rgba(30, 112, 255, 0.14) 34%, rgba(30, 112, 255, 0.045) 60%, transparent 78%);
  border-radius: 50%;
  pointer-events: none;
  z-index: 3;
  transform: translate(-50%, -50%);
  transition: width 0.3s, height 0.3s, opacity 0.18s ease;
  mix-blend-mode: screen;
}

/* --- Typography --- */
h1, h2, h3, h4 {
  font-weight: 700;
  letter-spacing: -0.03em;
}

p {
  color: var(--text-secondary);
}

a {
  color: inherit;
  text-decoration: none;
  transition: var(--transition-smooth);
}

/* --- Header / Navigation (GNB) --- */
.gnb {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 100;
  background: rgba(3, 9, 20, 0.56);
  -webkit-backdrop-filter: blur(18px) saturate(135%);
  backdrop-filter: blur(18px) saturate(135%);
}

.gnb-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 14px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

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

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

.mobile-menu-state {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
  clip-path: inset(50%);
}

.mobile-menu-toggle {
  display: none;
  width: 40px;
  height: 40px;
  border: 0;
  border-radius: 0;
  align-items: center;
  justify-content: center;
  background: transparent;
  color: var(--text-primary);
  cursor: pointer;
  transition: var(--transition-smooth);
}

.mobile-menu-toggle:hover {
  color: var(--brand-blue);
}

.mobile-menu-toggle:focus-visible {
  outline: none;
  color: var(--brand-blue);
}

.mobile-menu-toggle svg {
  width: 20px;
  height: 20px;
  stroke-width: 1.7;
}

.mobile-menu-toggle .close-icon {
  display: none;
}

.nav-links {
  display: flex;
  gap: 28px;
  align-items: center;
}

.nav-links a {
  font-size: 13px;
  font-weight: 500;
  color: var(--text-secondary);
}

.nav-links a:hover, .nav-links a.active {
  color: var(--text-primary);
}

.nav-cta {
  background: var(--brand-blue);
  color: var(--text-primary) !important;
  padding: 6px 14px;
  border-radius: 6px;
  font-weight: 600 !important;
}

.nav-cta:hover {
  background: #3b82f6;
  box-shadow: 0 0 12px var(--brand-blue-glow);
}

.nav-controls {
  display: flex;
  align-items: center;
}

.lang-btn {
  background: transparent;
  border: 0;
  padding: 4px 0;
  border-radius: 0;
  color: var(--text-secondary);
  font-family: var(--font-mono);
  font-size: 10px;
  cursor: pointer;
}

.lang-btn:hover {
  color: var(--text-primary);
}

.lang-btn:focus-visible {
  outline: none;
  color: var(--text-primary);
}

.lang-btn .active-lang {
  color: var(--brand-blue);
  font-weight: 700;
}

/* --- Layout Sections --- */
.section {
  max-width: 1200px;
  margin: 0 auto;
  padding: 100px 24px;
}

.section-header {
  margin-bottom: 56px;
  max-width: 720px;
}

.section-label {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--brand-blue);
  font-weight: 600;
  letter-spacing: 0.1em;
  display: block;
  margin-bottom: 12px;
}

.section-header h2 {
  font-size: 32px;
  line-height: 1.5;
  margin-bottom: 14px;
}

.section-desc {
  font-size: 20px;
  line-height: 1.5;
  color: var(--text-secondary);
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 20px 40px;
  border-radius: 6px;
  font-size: 18px;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition-smooth);
}

.btn-primary {
  background: var(--brand-blue);
  border: 1px solid transparent;
  color: var(--text-primary);
}

.btn-primary:hover {
  background: var(--off-white);
  color: var(--brand-blue);
  box-shadow: 0 0 16px var(--brand-blue-glow);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--border-subtle);
  color: var(--text-primary);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.05);
  border-color: var(--border-active);
  color: var(--brand-blue);
}

/* --- 00 HERO Section (Three.js WebGL Layout) --- */
.hero-section {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  /* 좌우 패딩은 .hero-layout으로 옮겨, 섹션 콘텐츠와 동일한 거터를 갖도록 함 */
  padding: 120px 0 80px 0;
  isolation: isolate;
}

.hero-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    linear-gradient(112deg, transparent 34%, rgba(16, 112, 252, 0.13) 62%, transparent 86%),
    linear-gradient(180deg, rgba(3, 21, 59, 0.22), transparent 52%);
  filter: blur(34px);
  opacity: 0.72;
  z-index: 0;
  pointer-events: none;
}

.hero-section::after {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(rgba(16, 112, 252, 0.2) 1.1px, transparent 1.1px),
    radial-gradient(rgba(239, 246, 255, 0.12) 0.95px, transparent 0.95px);
  background-position: 65% 42%, 82% 64%;
  background-size: 42px 42px, 58px 58px;
  -webkit-mask-image: linear-gradient(90deg, transparent 18%, rgba(0, 0, 0, 0.72) 54%, rgba(0, 0, 0, 0.22) 100%);
  mask-image: linear-gradient(90deg, transparent 18%, rgba(0, 0, 0, 0.72) 54%, rgba(0, 0, 0, 0.22) 100%);
  opacity: 0.45;
  z-index: 0;
  pointer-events: none;
}

.hero-layout {
  position: relative;
  z-index: 1;
  /* .section과 동일한 1200px + 좌우 24px 패딩 → hero 텍스트가 섹션 콘텐츠와 좌우 정렬됨 */
  max-width: 1200px;
  width: 100%;
  padding: 0 24px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
}

.hero-content {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  text-align: left;
}

.hero-title {
  font-size: 44px;
  line-height: 1.3;
  margin-bottom: 20px;
  background: linear-gradient(135deg, #ffffff 40%, #8e9cae 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-subtitle {
  font-size: 20px;
  line-height: 1.5;
  max-width: 600px;
  margin-bottom: 36px;
}

/* Three.js Canvas Container */
.hero-visual {
  position: relative;
  z-index: 1;
  /* 컬럼은 좁아졌지만(1200px 기준) 우측으로 64px 브레이크아웃해 비주얼의 원래 위치·크기 유지 */
  justify-self: start;
  width: calc(100% + 64px);
  height: 500px;
  min-height: 500px;
  display: block;
  overflow: visible;
  pointer-events: none;
}

#canvas-container {
  position: absolute;
  inset: -260px -176px -260px -128px;
}

#canvas-container canvas {
  display: block;
}

/* --- Partner Logo Marquee --- */
.partners-section {
  position: relative;
  z-index: 2;
  padding: 52px 24px 0;
  overflow: hidden;
}

.partners-kicker {
  width: min(1200px, calc(100vw - 48px));
  margin: 0 auto 22px;
  font-family: var(--font-mono);
  font-size: 11px;
  line-height: 1;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-align: left;
  color: var(--brand-blue);
}

.partners-marquee {
  position: relative;
  width: min(1200px, calc(100vw - 48px));
  margin: 0 auto;
  padding: 32px 0;
  overflow: hidden;
  contain: layout paint;
  background: #000000;
  -webkit-mask-image: linear-gradient(90deg, transparent 0%, #000 8%, #000 92%, transparent 100%);
  mask-image: linear-gradient(90deg, transparent 0%, #000 8%, #000 92%, transparent 100%);
}

.partners-track {
  display: flex;
  width: max-content;
  will-change: transform;
  animation: partnersMarquee 38s linear infinite;
}

.partners-logo-set {
  display: flex;
  align-items: center;
  flex: 0 0 auto;
  gap: 20px;
  padding-right: 20px;
}

.partner-logo {
  position: relative;
  flex: 0 0 auto;
  height: 56px;
  margin: 0;
  overflow: hidden;
  opacity: 0.8;
  transform: scale(0.9);
  transform-origin: center;
}

.partner-logo img {
  display: block;
  pointer-events: none;
  user-select: none;
}

.partner-logo-byteworx {
  width: 270.535px;
}

.byteworx-wordmark {
  position: absolute;
  left: 6.76px;
  top: 8.4px;
  width: 229.347px;
  height: 53.2px;
}

.byteworx-inc {
  position: absolute;
  left: 244.93px;
  top: 39.94px;
  width: 18.839px;
  height: 9.879px;
}

.partner-logo-paywork {
  width: 156.857px;
}

.partner-logo-paywork img {
  position: absolute;
  left: 5.98px;
  top: 0;
  width: 144.897px;
  height: 51.716px;
}

.partner-logo-jiran {
  width: 298.2px;
}

.partner-logo-jiran img,
.partner-logo-buzzni img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.partner-logo-oilnow {
  width: 161px;
}

.partner-logo-oilnow img {
  position: absolute;
  left: 50%;
  top: 50%;
  width: 136.635px;
  height: 35px;
  transform: translate(-50%, -50%);
}

.partner-logo-kaiper {
  width: 197.4px;
}

.partner-logo-kaiper img {
  position: absolute;
  left: 50%;
  top: 50%;
  width: 171.436px;
  height: 26.992px;
  transform: translate(-50%, -50%);
}

.partner-logo-scg {
  width: 270.2px;
}

.partner-logo-scg img {
  position: absolute;
  left: 50%;
  top: 50%;
  width: 260.712px;
  height: 32.984px;
  transform: translate(-50%, -50%);
}

.partner-logo-dreaminsight {
  width: 383.6px;
}

.partner-logo-dreaminsight img {
  position: absolute;
  left: 50%;
  top: 50%;
  width: 383.6px;
  height: 30.8px;
  object-fit: contain;
  transform: translate(-50%, -50%);
}

.partner-logo-buzzni {
  width: 194.469px;
}

.partner-logo-samyuk365 {
  width: 140.752px;
}

.samyuk365-symbol {
  position: absolute;
  left: 0;
  top: 0;
  width: 53.884px;
  height: 56px;
}

.samyuk365-letter {
  position: absolute;
  top: 14.045px;
  height: 27.91px;
}

.samyuk365-letter-1 {
  left: 64.151px;
  width: 26.92px;
}

.samyuk365-letter-2 {
  left: 92.579px;
  width: 22.984px;
}

.samyuk365-letter-3 {
  left: 117.873px;
  width: 22.935px;
}

@keyframes partnersMarquee {
  from {
    transform: translateX(0);
  }
  to {
    transform: translateX(-50%);
  }
}

/* --- 03 HOW WE WORK Section (Animated Process Stack) --- */
.process-section {
  position: relative;
  overflow: visible;
  isolation: isolate;
}

.process-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.04fr) minmax(420px, 0.96fr);
  gap: clamp(48px, 6vw, 88px);
  align-items: center;
}

.process-visual-stack {
  position: relative;
  min-height: 620px;
  display: grid;
  place-items: center;
}

.process-diamond-svg {
  position: relative;
  z-index: 1;
  width: min(600px, 46vw);
  height: auto;
  display: block;
  overflow: hidden;
}

.process-diamond-layer {
  opacity: 0;
  transform-box: fill-box;
  transform-origin: center;
  transform: translateY(-64px);
  transition:
    opacity 0.58s ease,
    transform 0.72s cubic-bezier(0.16, 1, 0.3, 1),
    fill-opacity 0.42s ease,
    stroke-opacity 0.42s ease;
}

.process-diamond-layer.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.process-section.is-resetting .process-diamond-layer {
  transition-duration: 0.3s;
}

.process-copy {
  min-width: 0;
}

.process-section-header {
  margin-bottom: 48px;
}

.process-section-header h2 {
  max-width: 560px;
}

.process-timeline {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 0;
}

.process-step {
  --step-glow: rgba(30, 112, 255, 0);
  position: relative;
  display: grid;
  grid-template-columns: 56px minmax(0, 1fr);
  gap: 24px;
  min-height: 132px;
  padding: 0 0 18px;
  color: rgba(255, 255, 255, 0.45);
  transition: color 0.55s ease, opacity 0.55s ease;
}

.process-step:last-child {
  min-height: 104px;
  padding-bottom: 0;
}

.step-marker {
  position: relative;
  display: flex;
  justify-content: flex-start;
}

.step-marker::after {
  content: '';
  position: absolute;
  right: 0;
  top: 14px;
  width: 13px;
  height: 13px;
  border-radius: 50%;
  background:
    radial-gradient(circle, rgba(255, 255, 255, 0.66) 0 14%, rgba(127, 180, 255, 0.72) 15% 34%, rgba(30, 112, 255, 0.3) 35% 62%, rgba(30, 112, 255, 0) 63%);
  opacity: 0.5;
  transform: translate(50%, -50%);
  transition: opacity 0.55s ease, box-shadow 0.55s ease, transform 0.55s ease;
}

.step-num {
  position: relative;
  z-index: 2;
  font-size: 28px;
  line-height: 1;
  letter-spacing: -0.02em;
  color: rgba(255, 255, 255, 0.34);
  transition: color 0.55s ease, text-shadow 0.55s ease;
}

.step-line {
  position: absolute;
  right: -0.5px;
  top: 26px;
  bottom: 12px;
  width: 1px;
  overflow: hidden;
  background: linear-gradient(to bottom, rgba(142, 156, 174, 0.28), rgba(142, 156, 174, 0.02));
}

.process-step:last-child .step-line {
  display: none;
}

.step-line::after {
  content: '';
  position: absolute;
  inset: 0;
  transform: translateY(-100%);
  background: linear-gradient(to bottom, transparent, rgba(30, 112, 255, 0.98), rgba(248, 250, 252, 0.72), transparent);
  box-shadow: 0 0 18px rgba(30, 112, 255, 0.9);
  opacity: 0;
}

.process-step.is-active .step-line::after {
  animation: processLineTravel 2.4s cubic-bezier(0.16, 1, 0.3, 1) forwards;
  opacity: 1;
}

.step-content {
  min-width: 0;
  padding-top: 2px;
}

.step-content h3 {
  position: relative;
  display: inline-block;
  margin-bottom: 12px;
  font-size: 20px;
  line-height: 1.35;
  color: rgba(255, 255, 255, 0.72);
  transition: color 0.55s ease, text-shadow 0.55s ease;
}

.step-content h3::after {
  content: none;
}

.step-content p {
  max-width: 500px;
  font-size: 15px;
  line-height: 1.75;
  color: rgba(142, 156, 174, 0.62);
  transition: color 0.55s ease;
}

.process-step.is-active,
.process-step.is-complete {
  color: var(--text-primary);
}

.process-step.is-active .step-num {
  color: var(--text-primary);
  text-shadow: 0 0 22px rgba(30, 112, 255, 0.78);
}

.process-step.is-active .step-marker::after {
  opacity: 1;
  transform: translate(50%, -50%) scale(1.34);
  background:
    radial-gradient(circle, rgba(255, 255, 255, 1) 0 10%, rgba(152, 197, 255, 0.98) 11% 26%, rgba(30, 112, 255, 0.86) 27% 46%, rgba(30, 112, 255, 0.28) 47% 68%, rgba(30, 112, 255, 0) 69%);
  box-shadow:
    0 0 8px rgba(148, 196, 255, 0.9),
    0 0 22px rgba(30, 112, 255, 0.56),
    0 0 48px rgba(30, 112, 255, 0.24);
}

.process-step.is-active .step-content h3 {
  color: var(--text-primary);
  text-shadow: 0 0 18px rgba(30, 112, 255, 0.38);
}

.process-step.is-active .step-content p {
  color: rgba(226, 234, 246, 0.82);
}

.process-step.is-complete .step-num {
  color: rgba(30, 112, 255, 0.86);
}

.process-step.is-complete .step-marker::after {
  opacity: 0.9;
  box-shadow: 0 0 10px rgba(30, 112, 255, 0.36), 0 0 22px rgba(30, 112, 255, 0.18);
}

@keyframes processLineTravel {
  0% {
    transform: translateY(-100%);
    opacity: 0;
  }
  16% {
    opacity: 1;
  }
  82% {
    transform: translateY(92%);
    opacity: 1;
  }
  100% {
    transform: translateY(120%);
    opacity: 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  .partners-track {
    animation: none;
    transform: translateX(0);
  }

  .process-diamond-layer,
  .step-num,
  .step-marker::after,
  .step-content h3,
  .step-content p {
    transition: none;
  }

  .process-step.is-active .step-line::after {
    animation: none;
  }

  .process-step.is-active .step-line::after {
    opacity: 1;
    transform: none;
  }
}

/* --- 01 PROBLEM Section --- */
.problem-section {
  position: relative;
  width: min(1200px, calc(100vw - 48px));
  padding-top: 88px;
  padding-left: 0;
  padding-right: 0;
  padding-bottom: 0;
  border-bottom: none;
  isolation: isolate;
}

.problem-section::before {
  content: '';
  position: absolute;
  right: -180px;
  bottom: -120px;
  width: 560px;
  height: 560px;
  background: radial-gradient(circle, rgba(30, 112, 255, 0.16), rgba(30, 112, 255, 0.045) 44%, transparent 72%);
  pointer-events: none;
  z-index: -1;
}

.problem-section .section-header {
  max-width: 920px;
  margin-bottom: 88px;
}

.problem-section .section-header h2 {
  max-width: 920px;
  font-size: 32px;
  line-height: 1.5;
  letter-spacing: -0.03em;
  margin-bottom: 14px;
  font-weight: 700;
}

.problem-section .section-desc {
  max-width: 680px;
  font-size: 20px;
  line-height: 1.7;
  color: rgba(142, 156, 174, 0.86);
}

.problem-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  column-gap: clamp(48px, 7vw, 104px);
  row-gap: 92px;
}

.problem-feature {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  min-height: 190px;
}

.problem-feature .card-icon {
  width: 34px;
  height: 34px;
  margin-bottom: 28px;
  border: 0;
  border-radius: 0;
  background: transparent;
  color: rgba(255, 255, 255, 0.84);
}

.problem-feature .card-icon svg {
  width: 32px;
  height: 32px;
  stroke-width: 1.45;
}

.problem-feature h3 {
  font-size: 23px;
  line-height: 1.28;
  letter-spacing: -0.035em;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.94);
  margin-bottom: 12px;
}

.problem-feature p {
  max-width: 350px;
  font-size: 16px;
  line-height: 1.72;
  color: rgba(142, 156, 174, 0.86);
}

.problem-footer {
  position: relative;
  width: 100vw;
  margin: 118px 0 0 calc(50% - 50vw);
  padding: 108px max(24px, calc((100vw - 1040px) / 2)) 116px;
  text-align: center;
  overflow: hidden;
  isolation: isolate;
}

.problem-footer::before {
  content: '';
  position: absolute;
  top: -210px;
  left: 50%;
  width: 520px;
  height: 520px;
  transform: translateX(-50%);
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.08), rgba(255, 255, 255, 0.025) 32%, transparent 68%);
  pointer-events: none;
  z-index: -1;
}

.problem-footer::after {
  content: '';
  position: absolute;
  right: -120px;
  bottom: -260px;
  width: 620px;
  height: 620px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(30, 112, 255, 0.15), rgba(30, 112, 255, 0.035) 46%, transparent 72%);
  pointer-events: none;
  z-index: -1;
}

.problem-footer-soft-border {
  position: absolute;
  top: 0;
  left: 50%;
  width: min(560px, calc(100vw - 48px));
  height: 72px;
  transform: translateX(-50%);
  pointer-events: none;
  border-radius: 0 0 48px 48px;
  background:
    radial-gradient(ellipse at top, rgba(255, 255, 255, 0.065), rgba(255, 255, 255, 0.014) 38%, transparent 74%),
    linear-gradient(180deg, rgba(30, 112, 255, 0.042), transparent 70%);
  box-shadow:
    0 22px 44px rgba(255, 255, 255, 0.024),
    0 34px 74px rgba(30, 112, 255, 0.052);
  opacity: 0.86;
  -webkit-mask-image: linear-gradient(90deg, transparent 0%, #000 14%, #000 86%, transparent 100%);
  mask-image: linear-gradient(90deg, transparent 0%, #000 14%, #000 86%, transparent 100%);
}

.problem-footer-soft-border::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent 0%, rgba(255, 255, 255, 0.08) 12%, rgba(255, 255, 255, 0.44) 50%, rgba(255, 255, 255, 0.08) 88%, transparent 100%);
}

.problem-footer-soft-border::after {
  content: '';
  position: absolute;
  top: 1px;
  left: 12%;
  right: 12%;
  height: 42px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.026), transparent);
  filter: blur(11px);
}

.problem-footer-mark {
  position: relative;
  width: 110px;
  height: 110px;
  margin: 0 auto 42px;
  display: block;
  object-fit: contain;
}

.problem-footer-copy {
  max-width: 1080px;
  margin: 0 auto;
  font-size: 32px;
  line-height: 1.5;
  letter-spacing: -0.03em;
  font-weight: 700;
  color: var(--text-primary);
}

.problem-footer-note {
  max-width: 760px;
  margin: 30px auto 0;
  font-size: 17px;
  line-height: 1.8;
  color: rgba(142, 156, 174, 0.9);
}

.problem-footer strong {
  color: var(--brand-blue);
}

/* --- 02 SOLUTION Section --- */
.solution-section {
  max-width: 1248px;
}

.solution-section .section-header {
  max-width: 100%;
  margin-bottom: 80px;
  text-align: center;
}

.solution-section .section-label {
  color: var(--brand-blue);
  font-weight: 700;
  line-height: 16px;
  letter-spacing: 0;
}

.solution-section .section-header h2 {
  width: min(900px, 100%);
  margin: 0 auto;
  font-family: 'Noto Sans KR', var(--font-main);
  font-size: 32px;
  line-height: 1.5;
  font-weight: 700;
  letter-spacing: 0;
  color: var(--text-primary);
}

.solution-split {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 48px;
}

.solution-item {
  width: 100%;
  min-width: 0;
  border-radius: 8px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 44px;
}

.solution-visual {
  width: 312px;
  height: 312px;
  margin: 0;
  overflow: hidden;
  flex: 0 0 auto;
}

.solution-visual img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.solution-copy {
  width: 100%;
  min-width: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  text-align: center;
}

.sol-badge {
  display: block;
  font-family: var(--font-mono);
  font-size: 10px;
  line-height: 14px;
  font-weight: 700;
  color: var(--text-secondary);
  letter-spacing: 0;
}

.solution-copy h3 {
  width: min(330px, 100%);
  font-family: 'Noto Sans KR', var(--font-main);
  font-size: 24px;
  line-height: 32px;
  font-weight: 700;
  letter-spacing: 0;
  color: var(--text-primary);
}

.sol-sub {
  width: 100%;
  margin: 0;
  font-family: 'Noto Sans KR', var(--font-main);
  font-size: 14px;
  line-height: 24px;
  color: var(--text-secondary);
}

.sol-sub .copy-line {
  display: block;
}

/* --- 09 CONTACT Section --- */
.contact-section {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.contact-section .section-header {
  width: min(920px, 100%);
  max-width: 920px;
  margin: 0 auto 56px;
}

.contact-section .section-label {
  margin-bottom: 12px;
  color: #1CA4FF;
  font-weight: 700;
  line-height: 16px;
  letter-spacing: 0;
}

.contact-section .section-header h2 {
  width: min(900px, 100%);
  margin: 0 auto 32px;
  font-family: 'Noto Sans KR', var(--font-main);
  font-size: 44px;
  line-height: 1.5;
  font-weight: 700;
  letter-spacing: 0;
  color: var(--text-primary);
}

.contact-section .section-desc {
  width: min(760px, 100%);
  max-width: 760px;
  margin: 0 auto;
  font-family: 'Noto Sans KR', var(--font-main);
  font-size: 20px;
  line-height: 1.7;
  color: rgba(142, 156, 174, 0.9);
}

.contact-section .copy-line {
  display: block;
}

.contact-cards {
  display: flex;
  justify-content: center;
  width: 100%;
}

.contact-cards-simple {
  align-items: center;
}

.contact-form-link {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 56px;
  padding: 17px 72px;
  border: 1px solid rgba(142, 190, 255, 0.36);
  border-radius: 46px;
  background: rgba(10, 34, 76, 0.72);
  color: var(--text-primary);
  font-family: 'Noto Sans KR', var(--font-main);
  font-size: 18px;
  line-height: 22px;
  font-weight: 700;
  letter-spacing: 0;
  overflow: hidden;
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  box-shadow: none;
  transition:
    background-color 0.38s cubic-bezier(0.16, 1, 0.3, 1),
    border-color 0.38s cubic-bezier(0.16, 1, 0.3, 1),
    box-shadow 0.38s cubic-bezier(0.16, 1, 0.3, 1),
    transform 0.38s cubic-bezier(0.16, 1, 0.3, 1);
}

.contact-form-link:hover,
.contact-form-link:focus-visible {
  border-color: rgba(190, 220, 255, 0.68);
  background: rgba(18, 58, 122, 0.86);
  color: var(--text-primary);
  box-shadow:
    0 0 0 1px rgba(142, 190, 255, 0.18),
    0 0 26px rgba(30, 112, 255, 0.36),
    0 14px 34px rgba(30, 112, 255, 0.24);
  transform: translateY(-2px) scale(1.025);
}

.contact-form-link:focus-visible {
  outline: none;
  box-shadow:
    0 0 0 4px rgba(30, 112, 255, 0.24),
    0 0 26px rgba(30, 112, 255, 0.36),
    0 14px 34px rgba(30, 112, 255, 0.24);
}

.contact-form-link:active {
  transform: translateY(0) scale(1);
}

/* --- Footer --- */
.site-footer {
  background: #000000;
  padding: 32px 24px;
  font-size: 12px;
  color: var(--text-tertiary);
}

.footer-container {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}

/* --- Responsive Adjustments --- */
@media (max-width: 992px) {
  .hero-layout {
    grid-template-columns: 1fr;
    gap: 48px;
    text-align: center;
  }
  .hero-content {
    align-items: center;
    text-align: center;
  }
  .hero-title {
    font-size: 38px;
  }
  .hero-subtitle {
    font-size: 16px;
  }
  .hero-visual {
    height: 380px;
    min-height: 380px;
    /* 단일 컬럼에서는 브레이크아웃 해제 */
    justify-self: stretch;
    width: 100%;
  }
  #canvas-container {
    inset: -180px -112px -180px -112px;
  }
  .partners-section {
    padding-top: 52px;
    padding-bottom: 0;
  }
  .problem-section {
    padding-top: 88px;
  }
  .problem-section .section-header {
    margin-bottom: 64px;
  }
  .problem-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: 48px;
    row-gap: 64px;
  }
}

@media (max-width: 768px) {
  .br-desktop {
    display: none;
  }
  .br-mobile {
    display: inline;
  }
  .copy-line {
    display: inline;
  }
  .glow-cursor {
    display: none;
  }
  .hero-section {
    overflow: hidden;
  }
  .hero-layout {
    gap: 40px;
  }
  .hero-visual {
    height: 360px;
    min-height: 360px;
  }
  #canvas-container {
    inset: -56px -56px -120px -56px;
  }
  .gnb-container {
    flex-direction: row;
    flex-wrap: wrap;
    gap: 0;
    padding: 12px 20px;
  }
  .logo-img {
    height: 20px;
  }
  .mobile-menu-toggle {
    display: inline-flex;
    margin-left: auto;
  }
  .mobile-menu-state:checked + .mobile-menu-toggle .menu-icon,
  .gnb.is-menu-open .mobile-menu-toggle .menu-icon {
    display: none;
  }
  .mobile-menu-state:checked + .mobile-menu-toggle .close-icon,
  .gnb.is-menu-open .mobile-menu-toggle .close-icon {
    display: block;
  }
  .nav-links {
    display: none;
    order: 3;
    width: 100%;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    margin-top: 12px;
    padding: 14px 0 8px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
  }
  .mobile-menu-state:checked ~ .nav-links,
  .gnb.is-menu-open .nav-links {
    display: flex;
  }
  .nav-links a {
    width: 100%;
    padding: 13px 0;
    font-size: 15px;
    line-height: 1.4;
    border-bottom: 1px solid rgba(255, 255, 255, 0.055);
  }
  .nav-links a:last-child {
    border-bottom: 0;
  }
  .nav-cta {
    justify-content: center;
    text-align: center;
    margin-top: 8px;
    padding: 12px 14px !important;
    border-bottom: 0 !important;
  }
  .nav-controls {
    display: none;
    order: 4;
    width: 100%;
    justify-content: flex-start;
    padding: 10px 0 4px;
  }
  .mobile-menu-state:checked ~ .nav-controls,
  .gnb.is-menu-open .nav-controls {
    display: flex;
  }
  .lang-btn {
    padding: 7px 0;
  }
  .partners-section {
    padding: 48px 16px 0;
  }
  .partners-kicker {
    width: calc(100vw - 32px);
    margin-bottom: 20px;
  }
  .partners-marquee {
    width: calc(100vw - 32px);
    padding: 26px 0;
    -webkit-mask-image: linear-gradient(90deg, transparent 0%, #000 12%, #000 88%, transparent 100%);
    mask-image: linear-gradient(90deg, transparent 0%, #000 12%, #000 88%, transparent 100%);
  }
  .partners-track {
    animation-duration: 32s;
  }
  .partners-logo-set {
    gap: 18px;
    padding-right: 18px;
  }
  .partner-logo {
    transform: scale(0.8);
  }
  .problem-section {
    width: calc(100vw - 32px);
    padding-top: 84px;
    padding-bottom: 0;
  }
  .problem-section .section-header {
    margin-bottom: 52px;
  }
  .problem-section .section-desc {
    font-size: 17px;
  }
  .problem-grid {
    grid-template-columns: 1fr;
    row-gap: 48px;
  }
  .problem-feature {
    min-height: auto;
  }
  .problem-feature .card-icon {
    margin-bottom: 18px;
  }
  .problem-feature h3 {
    font-size: 21px;
  }
  .problem-feature p {
    max-width: none;
    font-size: 15px;
  }
  .problem-footer {
    margin-top: 64px;
    padding: 72px 24px 82px;
  }
  .problem-footer-soft-border {
    width: min(340px, calc(100vw - 40px));
    height: 56px;
  }
  .problem-footer-mark {
    width: 110px;
    height: 110px;
    margin-bottom: 28px;
  }
  .problem-footer-note {
    font-size: 15px;
    line-height: 1.75;
    margin-top: 22px;
  }
  .solution-split {
    grid-template-columns: 1fr;
    gap: 68px;
  }
  .solution-section .section-header {
    margin-bottom: 56px;
  }
  .solution-section .section-header h2 {
    font-size: 28px;
    line-height: 1.42;
  }
  .solution-item {
    gap: 32px;
  }
  .solution-visual {
    width: min(312px, 82vw);
    height: min(312px, 82vw);
  }
  .process-layout {
    grid-template-columns: 1fr;
    gap: 36px;
  }
  .process-copy {
    order: 1;
  }
  .process-visual-stack {
    order: 2;
    min-height: 440px;
    margin-top: 8px;
  }
  .process-section-header {
    margin-bottom: 36px;
  }
  .process-section-header h2 {
    max-width: 100%;
  }
  .process-timeline {
    gap: 0;
  }
  .process-step {
    grid-template-columns: 48px minmax(0, 1fr);
    gap: 18px;
    min-height: 142px;
  }
  .process-step:last-child {
    min-height: 112px;
  }
  .step-num {
    font-size: 22px;
  }
  .step-marker::after {
    top: 11px;
  }
  .step-line {
    right: -0.5px;
    top: 22px;
  }
  .step-content h3 {
    font-size: 18px;
    margin-bottom: 11px;
  }
  .step-content p {
    font-size: 14px;
    line-height: 1.72;
  }
  .process-diamond-svg {
    width: min(420px, 92vw);
  }
  .contact-section {
    padding-top: 88px;
    padding-bottom: 88px;
  }
  .contact-section .section-header {
    margin-bottom: 40px;
  }
  .contact-section .section-header h2 {
    font-size: 28px;
    line-height: 1.36;
    margin-bottom: 22px;
  }
  .contact-section .section-desc {
    font-size: 16px;
    line-height: 1.75;
  }
  .contact-form-link {
    width: min(100%, 320px);
    min-height: 54px;
    padding: 16px 28px;
    font-size: 16px;
    line-height: 22px;
  }
}