/* ===========================
   RESET & TOKENS
   =========================== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --magenta:        #C01061;
  --magenta-bright: #E01575;
  --magenta-dark:   #8C0A48;
  --magenta-soft:   rgba(192, 16, 97, 0.12);

  --cream:   #F9F7F1;
  --cream-2: #F1EDE5;

  --dark:   #0D0C0C;
  --dark-2: #151313;
  --dark-3: #1C1919;
  --dark-4: #252120;

  --text-dk:      #F9F7F1;
  --text-muted-dk: rgba(249, 247, 241, 0.50);
  --text-lt:       #0D0C0C;
  --text-muted-lt: rgba(13, 12, 12, 0.50);

  --border-dk: rgba(249, 247, 241, 0.09);
  --border-lt: rgba(13, 12, 12, 0.11);

  --font-sans: 'Pretendard Variable','Pretendard','Noto Sans KR',system-ui,sans-serif;
  --font-mono: 'SF Mono','Fira Code','Consolas',monospace;

  --max-w:      1160px;
  --pad-x:      48px;
  --section-py: 120px;

  --r-sm: 6px;
  --r-md: 12px;
  --r-lg: 20px;
  --r-xl: 28px;
  --r-2xl: 40px;
}

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

body {
  font-family: var(--font-sans);
  background: var(--dark);
  color: var(--text-dk);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

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

/* ===========================
   TYPOGRAPHY
   =========================== */
h1, h2, h3 {
  font-family: var(--font-sans);
  letter-spacing: -0.05em;
  line-height: 1.09;
  word-break: keep-all;
}
h1 { font-size: clamp(1.8rem, 3.4vw, 3.2rem); font-weight: 800; }
h2 { font-size: clamp(1.8rem, 3.4vw, 3.2rem); font-weight: 700; line-height: 1.3; letter-spacing: -0.04em; }

#hero h1 {
  font-weight: 700;
  line-height: 1.3;
  letter-spacing: -0.04em;
}
h3 { font-size: 1.2rem; font-weight: 700; letter-spacing: -0.03em; }

p { margin-bottom: 1em; word-break: keep-all; }
p:last-child { margin-bottom: 0; }
em { font-style: italic; }

code {
  font-family: var(--font-mono); font-size: 0.8em;
  background: rgba(192,16,97,0.14); color: var(--magenta-bright);
  padding: 0.12em 0.44em; border-radius: 4px;
}

a { color: inherit; text-decoration: none; }
ul { list-style: none; }

/* ===========================
   KEYFRAMES
   =========================== */
@keyframes markLineGrow {
  from { transform: scaleX(0); }
  to   { transform: scaleX(1); }
}
@keyframes dotPulse {
  0%, 100% { opacity: 1;   transform: scale(1); }
  50%       { opacity: 0.4; transform: scale(0.65); }
}
@keyframes tagSlideIn {
  from { opacity: 0; transform: translateX(-10px) scale(0.92); }
  to   { opacity: 1; transform: translateX(0) scale(1); }
}
@keyframes badgePop {
  from { opacity: 0; transform: scale(0.78) translateY(8px); }
  to   { opacity: 1; transform: scale(1)   translateY(0); }
}
@keyframes principleSlide {
  from { opacity: 0; transform: translateX(16px); }
  to   { opacity: 1; transform: translateX(0); }
}
@keyframes rowFadeIn {
  from { opacity: 0; transform: translateY(6px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes specFill {
  from { clip-path: inset(0 100% 0 0); }
  to   { clip-path: inset(0 0% 0 0); }
}
@keyframes iconPulse {
  0%, 100% { box-shadow: 0 8px 32px rgba(192,16,97,0.45); transform: scale(1); }
  45%       { box-shadow: 0 12px 44px rgba(192,16,97,0.72); transform: scale(1.07); }
  65%       { box-shadow: 0 8px 32px rgba(192,16,97,0.45); transform: scale(1.03); }
}

.fade-in {
  opacity: 0; transform: translateY(20px);
  transition: opacity 0.65s cubic-bezier(.25,.8,.25,1),
              transform 0.65s cubic-bezier(.25,.8,.25,1);
  transition-delay: var(--delay, 0ms);
}
.fade-in.visible { opacity: 1; transform: translateY(0); }

/* ===========================
   LABELS & UTILITY
   =========================== */
.section-label {
  font-family: var(--font-mono); font-size: 0.68rem; font-weight: 600;
  letter-spacing: 0.2em; text-transform: uppercase; margin-bottom: 18px;
  color: var(--magenta);
}
.section-label-mg {
  font-family: var(--font-mono); font-size: 0.68rem; font-weight: 600;
  letter-spacing: 0.2em; text-transform: uppercase; margin-bottom: 18px;
  color: var(--magenta-bright);
}

.section-divider { width: 100%; height: 1px; background: var(--border-lt); margin: 56px 0; }
.dark-div { background: var(--border-dk); }

.sub-section-title {
  font-family: var(--font-mono); font-size: 0.67rem; font-weight: 600;
  text-transform: uppercase; letter-spacing: 0.14em;
  color: var(--text-muted-lt); margin-bottom: 22px;
}

/* ===========================
   BUTTONS
   =========================== */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 14px 28px;
  font-family: var(--font-sans); font-size: 0.9rem; font-weight: 700;
  letter-spacing: -0.01em;
  border-radius: 50px; border: 2px solid transparent;
  cursor: pointer; text-decoration: none;
  transition: all 0.22s ease; white-space: nowrap;
}
.btn-primary {
  background: var(--magenta); color: #fff; border-color: var(--magenta);
}
.btn-primary:hover {
  background: var(--magenta-bright); border-color: var(--magenta-bright);
  transform: translateY(-2px); box-shadow: 0 8px 32px rgba(192,16,97,0.45);
}
.btn-ghost {
  background: transparent; color: var(--text-dk); border-color: var(--border-dk);
}
.btn-ghost:hover {
  border-color: rgba(249,247,241,0.5); transform: translateY(-2px);
}
.btn-accent {
  background: var(--magenta-bright); color: #fff; border-color: var(--magenta-bright); font-weight: 700;
}
.btn-accent:hover {
  background: #fff; color: var(--magenta); border-color: #fff;
  transform: translateY(-2px); box-shadow: 0 8px 28px rgba(255,255,255,0.18);
}
.btn-large { padding: 16px 44px; font-size: 1rem; }
.btn-group { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 40px; }

/* ===========================
   NAV
   =========================== */
#nav {
  position: sticky; top: 0; z-index: 200;
  background: rgba(13,12,12,0.88);
  backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-dk);
  transition: transform 0.3s ease;
}
.nav-inner { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.logo {
  font-size: 1.55rem; font-weight: 800; letter-spacing: -0.05em;
  color: var(--text-dk);
}
.nav-links { display: flex; align-items: center; gap: 28px; }
.nav-links a {
  font-size: 0.875rem; font-weight: 500;
  color: var(--text-muted-dk); transition: color 0.18s;
}
.nav-links a:hover { color: var(--text-dk); }
.nav-links a.nav-active { color: var(--magenta-bright); font-weight: 600; }
.nav-cta {
  color: #fff !important; background: var(--magenta);
  padding: 8px 20px !important; border-radius: 50px !important;
  font-weight: 700 !important;
  transition: background 0.18s, transform 0.18s, box-shadow 0.18s !important;
}
.nav-cta:hover {
  background: var(--magenta-bright) !important;
  transform: translateY(-1px); box-shadow: 0 4px 18px rgba(192,16,97,0.4);
}
.hamburger {
  display: none; flex-direction: column; justify-content: center;
  gap: 5px; width: 32px; height: 32px;
  background: none; border: none; cursor: pointer; padding: 0;
}
.hamburger span {
  display: block; width: 100%; height: 1.5px;
  background: var(--text-dk); border-radius: 2px;
  transition: transform 0.25s, opacity 0.25s;
}
.hamburger.open span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }
.mobile-menu {
  display: none; flex-direction: column;
  background: rgba(13,12,12,0.97); border-top: 1px solid var(--border-dk);
  padding: 12px 0 20px;
}
.mobile-menu.open { display: flex; }
.mobile-link {
  padding: 13px var(--pad-x); font-size: 0.95rem; font-weight: 500;
  color: var(--text-muted-dk);
}
.mobile-link:hover { color: var(--text-dk); }
.mobile-link-cta { color: var(--magenta-bright) !important; font-weight: 700; }

/* ===========================
   HERO
   =========================== */
#hero {
  background: var(--dark);
  padding: 100px 0 0;
  --magenta: #cd1c70;
  --magenta-bright: #cd1c70;
}
.hero-inner {
  display: grid;
  grid-template-columns: 1fr 420px;
  gap: 64px;
  align-items: center;
  padding-bottom: 96px;
}

.hero-eyebrow {
  display: inline-flex; align-items: center; gap: 10px;
  font-family: var(--font-mono); font-size: 0.68rem; font-weight: 600;
  letter-spacing: 0.18em; text-transform: uppercase;
  color: var(--text-muted-dk); margin-bottom: 28px;
}
.eyebrow-dot {
  width: 7px; height: 7px; border-radius: 50%;
  background: var(--magenta); flex-shrink: 0;
  animation: dotPulse 2.4s ease-in-out infinite;
}

h1 mark {
  background: none; color: var(--magenta);
  position: relative; display: inline;
}
h1 mark::after {
  content: '';
  position: absolute; bottom: -2px; left: 0; right: 0;
  height: 3px; background: var(--magenta); border-radius: 2px;
  transform: scaleX(0); transform-origin: left center;
}
.mark-revealed h1 mark::after {
  animation: markLineGrow 0.9s cubic-bezier(.25,.8,.25,1) 0.5s both;
}

.hero-sub {
  font-size: 1.05rem; color: var(--text-muted-dk);
  line-height: 1.9; margin-top: 28px;
}

/* Hero canvas microscopy */
.hero-visual { display: flex; justify-content: center; align-items: center; }

.microscopy-wrap {
  position: relative; display: flex;
  flex-direction: column; align-items: center; gap: 18px;
}
.microscopy-ring {
  position: absolute; top: -12px; left: -12px;
  width: calc(100% + 24px); height: calc(100% - 48px);
  border-radius: 50%;
  background: radial-gradient(ellipse at center, rgba(205,28,112,0.16) 0%, transparent 70%);
  pointer-events: none; z-index: 0;
}
.microscopy-circle {
  position: relative; width: 400px; height: 400px; border-radius: 50%;
  background: #0A0708; overflow: hidden;
  border: 1.5px solid rgba(205,28,112,0.22);
  box-shadow:
    0 0 0 6px rgba(205,28,112,0.05),
    0 24px 80px rgba(205,28,112,0.18),
    0 4px 24px rgba(0,0,0,0.4);
  z-index: 1;
}
#microscopy-canvas {
  position: absolute; top: 0; left: 0; width: 100%; height: 100%;
}
.micro-overlay { position: absolute; inset: 0; pointer-events: none; }
.micro-crosshair-h {
  position: absolute; top: 50%; left: 10%; right: 10%;
  height: 1px; background: rgba(205,28,112,0.1); transform: translateY(-50%);
}
.micro-crosshair-v {
  position: absolute; left: 50%; top: 10%; bottom: 10%;
  width: 1px; background: rgba(205,28,112,0.1); transform: translateX(-50%);
}
.micro-circle-inner {
  position: absolute; inset: 15%; border-radius: 50%;
  border: 1px dashed rgba(205,28,112,0.12);
}
.microscopy-meta {
  display: flex; justify-content: space-between; align-items: flex-start;
  width: 400px; padding: 0 4px; z-index: 1;
}
.meta-left, .meta-right { display: flex; flex-direction: column; gap: 2px; }
.meta-right { text-align: right; }
.meta-tag { font-size: 0.82rem; font-weight: 700; color: var(--text-dk); letter-spacing: -0.01em; }
.meta-sub { font-size: 0.68rem; color: var(--text-muted-dk); font-family: var(--font-mono); }
.meta-nm {
  font-family: var(--font-mono); font-size: 1.3rem; font-weight: 800;
  color: var(--magenta-bright); letter-spacing: -0.03em; line-height: 1;
}
.meta-scale { font-family: var(--font-mono); font-size: 0.78rem; color: var(--text-muted-dk); }
.scale-bar {
  display: inline-block;
  width: 36px;
  height: 2px;
  background: currentColor;
  vertical-align: middle;
  margin-right: 6px;
  border-left: 2px solid currentColor;
  border-right: 2px solid currentColor;
}

/* Hero stats strip */
.hero-stats {
  border-top: 1px solid var(--border-dk);
  background: var(--dark-2);
  padding: 36px 0;
}
.stats-row {
  display: flex; align-items: center;
}
.stat-item {
  flex: 1; display: flex; flex-direction: column;
  align-items: center; gap: 7px;
  padding: 0 24px; text-align: center;
}
.stat-num-row {
  display: flex; align-items: baseline; gap: 3px;
}
.stat-num {
  font-size: clamp(1.5rem, 2.6vw, 2.2rem); font-weight: 800;
  letter-spacing: -0.05em; color: #fff; line-height: 1;
}
.stat-num.stat-word {
  font-size: clamp(1.1rem, 2vw, 1.6rem);
}
.stat-unit {
  font-size: 0.95rem; font-weight: 700;
  color: var(--magenta-bright); letter-spacing: -0.02em;
}
.stat-label {
  font-family: var(--font-mono); font-size: 0.62rem;
  letter-spacing: 0.09em; color: var(--text-muted-dk);
  text-transform: uppercase;
}
.stat-sep {
  width: 1px; height: 52px;
  background: var(--border-dk); flex-shrink: 0;
}

/* ===========================
   PROCESS
   =========================== */
#process {
  background: var(--cream);
  padding: 96px 0;
  color: var(--text-lt);
}
.process-header { margin-bottom: 60px; }
.process-header .section-label { color: var(--magenta); }
.process-header h2 {
  color: var(--text-lt);
}

.process-flow {
  display: flex; align-items: center;
  justify-content: space-between;
}
.process-step {
  display: flex; flex-direction: column; align-items: center;
  gap: 16px; flex: 1; text-align: center;
}
.step-num {
  font-family: var(--font-mono); font-size: 0.65rem; font-weight: 700;
  letter-spacing: 0.1em; color: var(--magenta); margin-bottom: 4px;
}
.step-icon {
  width: 68px; height: 68px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0; transition: transform 0.22s;
}
.process-step:hover .step-icon { transform: scale(1.1); }

.step-01 {
  background: rgba(13,12,12,0.06);
  border: 1.5px solid rgba(13,12,12,0.12);
  color: #3d6e4a;
}
.step-02 {
  background: var(--magenta-soft);
  border: 1.5px solid rgba(192,16,97,0.22);
  color: var(--magenta);
}
.step-03 {
  background: var(--magenta); color: #fff;
  animation: iconPulse 2.8s ease-in-out infinite;
}
.step-04 {
  background: rgba(13,12,12,0.08);
  border: 1.5px solid rgba(13,12,12,0.15);
  color: var(--text-lt);
}

.step-info { display: flex; flex-direction: column; gap: 4px; }
.step-info strong {
  font-size: 0.88rem; font-weight: 700; letter-spacing: -0.02em;
  color: var(--text-lt);
}
.step-info span { font-size: 0.74rem; color: var(--text-muted-lt); line-height: 1.5; }

.process-connector {
  flex: 0 0 2px;
  height: 1px;
  background: linear-gradient(90deg, var(--magenta), rgba(192,16,97,0.2));
  margin: 0 8px; margin-bottom: 44px; width: 40px;
}

/* ===========================
   PROBLEM
   =========================== */
#problem {
  background: var(--dark);
  padding: var(--section-py) 0;
}
#problem h2 { margin-bottom: 40px; color: var(--text-dk); }

.ci-list { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 22px; }
.ci-tag {
  font-family: var(--font-mono); font-size: 0.77rem;
  padding: 6px 14px; border-radius: 50px;
  background: rgba(192,16,97,0.12); color: var(--magenta-bright);
  border: 1px solid rgba(192,16,97,0.25); letter-spacing: 0.02em;
  opacity: 0;
}
.ci-tag.tag-visible { animation: tagSlideIn 0.45s cubic-bezier(.25,.8,.25,1) both; }

.problem-desc { color: var(--text-muted-dk); font-size: 0.96rem; }
.section-intro-sm {
  color: var(--text-muted-dk); font-size: 0.95rem; margin-bottom: 28px;
}

.problem-cards { display: grid; grid-template-columns: repeat(3,1fr); gap: 16px; }
.problem-card {
  background: var(--dark-3); border: 1px solid var(--border-dk);
  border-radius: var(--r-lg); padding: 32px 28px;
  transition: background 0.22s, border-color 0.22s, transform 0.25s;
  transition-delay: var(--delay, 0ms);
}
.problem-card:hover {
  background: var(--dark-4);
  border-color: rgba(192,16,97,0.3);
  transform: translateY(-4px);
}

.problem-icon {
  width: 48px; height: 48px;
  display: flex; align-items: center; justify-content: center;
  border-radius: var(--r-md);
  background: rgba(192,16,97,0.1);
  border: 1px solid rgba(192,16,97,0.18);
  color: var(--magenta-bright);
  margin-bottom: 20px;
  flex-shrink: 0;
  transition: background 0.22s, border-color 0.22s;
}
.problem-card:hover .problem-icon {
  background: rgba(192,16,97,0.18);
  border-color: rgba(192,16,97,0.32);
}

.problem-num {
  font-family: var(--font-mono); font-size: 0.65rem; font-weight: 700;
  letter-spacing: 0.14em; color: var(--magenta-bright); margin-bottom: 14px;
}
.problem-card h3 { color: var(--text-dk); margin-bottom: 6px; }
.problem-sub-title {
  font-size: 0.82rem; color: var(--magenta-bright); font-weight: 600; margin-bottom: 14px;
}
.problem-card > p:last-child {
  font-size: 0.87rem; color: var(--text-muted-dk); line-height: 1.78; margin-bottom: 0;
}

/* ===========================
   CALLOUT
   =========================== */
#callout {
  background-color: #f2c0d0;
  background-image: url('gptimage.png');
  background-size: cover;
  background-position: center center;
  background-repeat: no-repeat;
  padding: 120px 0;
  position: relative; overflow: hidden;
}
#callout::before {
  content: '';
  position: absolute; inset: 0; z-index: 1;
  background: linear-gradient(
    to right,
    rgba(255, 238, 244, 0.94) 0%,
    rgba(255, 238, 244, 0.88) 30%,
    rgba(255, 238, 244, 0.55) 58%,
    rgba(255, 238, 244, 0.08) 100%
  );
}

.callout-inner { position: relative; z-index: 2; max-width: 720px; }

.callout-kicker {
  font-family: var(--font-mono); font-size: 0.7rem; font-weight: 600;
  letter-spacing: 0.2em; text-transform: uppercase;
  color: var(--magenta); margin-bottom: 20px;
}
#callout h2 {
  color: #1a000a;
  margin-bottom: 24px;
}
.callout-desc {
  color: rgba(26, 0, 10, 0.8); font-size: 1.1rem; line-height: 1.88;
}
.callout-badges { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 44px; }
.callout-badges span {
  display: inline-block; padding: 9px 22px; border-radius: 50px;
  background: rgba(255, 255, 255, 0.55); border: 1.5px solid rgba(192, 16, 97, 0.3);
  color: #1a000a; font-size: 0.84rem; font-weight: 600;
  backdrop-filter: blur(8px);
  opacity: 0;
}
.callout-badges span.badge-visible {
  animation: badgePop 0.5s cubic-bezier(.34,1.56,.64,1) both;
}

/* ===========================
   TECHNOLOGY
   =========================== */
#technology {
  background: var(--cream);
  padding: var(--section-py) 0;
  color: var(--text-lt);
  position: relative;
}
.tech-header { margin-bottom: 56px; }
.tech-header .section-label { color: var(--magenta); }
.tech-header h2 { color: var(--text-lt); }

.h2-sub {
  display: block; font-size: 0.44em; font-weight: 500;
  color: var(--text-muted-lt); margin-top: 10px; letter-spacing: 0;
}

.tech-content-wrap {}
.tech-intro {
  color: var(--text-muted-lt); font-size: 0.97rem;
  line-height: 1.88; margin-bottom: 48px;
}

/* Spectrum */
.spectrum-section { margin-bottom: 48px; }
.spectrum-label-txt {
  font-family: var(--font-mono); font-size: 0.67rem; font-weight: 600;
  text-transform: uppercase; letter-spacing: 0.12em;
  color: var(--text-muted-lt); margin-bottom: 14px;
}
.spectrum-bar-wrap { position: relative; height: 38px; margin-bottom: 8px; }
.spectrum-gradient {
  width: 100%; height: 100%; border-radius: 20px;
  background: linear-gradient(90deg,
    #5B0060 0%, #3000FF 8%, #007BFF 18%, #00B4FF 26%,
    #00CC77 38%, #88DD00 46%, #FFEE00 53%,
    #FF9900 62%, #FF3300 74%, #CC0000 86%, #7A0000 100%
  );
  box-shadow: 0 2px 16px rgba(0,0,0,0.1);
  clip-path: inset(0 100% 0 0);
}
.spectrum-gradient.revealed {
  animation: specFill 1.2s cubic-bezier(.4,0,.2,1) 0.2s both;
}
.spectrum-marker {
  position: absolute; left: 58%; top: -10px; bottom: -10px;
  display: flex; flex-direction: column; align-items: center;
  pointer-events: none; opacity: 0; transition: opacity 0.4s ease 1.5s;
}
.spectrum-marker.revealed { opacity: 1; }
.marker-line { width: 2px; flex: 1; background: var(--text-lt); }
.marker-label {
  position: absolute; top: -26px;
  font-family: var(--font-mono); font-size: 0.72rem; font-weight: 700;
  color: var(--text-lt); background: var(--cream); padding: 2px 8px;
  border-radius: 4px; border: 1px solid var(--border-lt);
  white-space: nowrap; box-shadow: 0 2px 8px rgba(0,0,0,0.07);
}
.spectrum-ends {
  display: flex; justify-content: space-between;
  font-family: var(--font-mono); font-size: 0.66rem;
  color: var(--text-muted-lt); margin-top: 6px;
}
.spectrum-note { margin-top: 12px; font-size: 0.84rem; color: var(--text-muted-lt); }
.spectrum-note strong { color: var(--magenta); }

/* Properties grid */
.properties-grid {
  display: grid; grid-template-columns: repeat(2,1fr);
  gap: 1px; background: var(--border-lt);
  border: 1px solid var(--border-lt); border-radius: var(--r-md);
  overflow: hidden; margin-bottom: 16px;
}
.prop-item {
  background: var(--cream); padding: 24px 28px;
  transition: background 0.18s;
}
.prop-item:hover { background: var(--cream-2); }
.prop-label {
  font-family: var(--font-mono); font-size: 0.65rem;
  text-transform: uppercase; letter-spacing: 0.11em;
  color: var(--text-muted-lt); margin-bottom: 8px;
}
.prop-value { display: flex; flex-wrap: wrap; align-items: baseline; gap: 8px; }
.prop-value strong {
  font-size: 1.02rem; font-weight: 700;
  letter-spacing: -0.03em; color: var(--text-lt);
}
.prop-value span { font-size: 0.77rem; color: var(--text-muted-lt); }

.tds-note {
  font-size: 0.82rem; color: var(--text-muted-lt);
  border-left: 3px solid var(--magenta);
  padding: 12px 18px; background: var(--magenta-soft);
  border-radius: 0 var(--r-sm) var(--r-sm) 0;
}

/* Tables */
.table-wrap {
  overflow-x: auto; margin-bottom: 24px;
  border-radius: var(--r-md); border: 1px solid var(--border-lt);
}
.compare-table { width: 100%; border-collapse: collapse; font-size: 0.88rem; }
.compare-table th {
  text-align: left; padding: 12px 20px;
  font-family: var(--font-mono); font-size: 0.65rem;
  text-transform: uppercase; letter-spacing: 0.11em;
  color: var(--text-muted-lt); border-bottom: 1px solid var(--border-lt);
  background: var(--cream-2); white-space: nowrap;
}
.compare-table td {
  padding: 13px 20px; border-bottom: 1px solid var(--border-lt);
  vertical-align: middle; color: var(--text-lt);
}
.compare-table tbody tr:last-child td { border-bottom: none; }
.compare-table tbody tr.table-row-visible { animation: rowFadeIn 0.4s ease both; }
.highlight-row { background: var(--magenta-soft); }
.highlight-row td, .highlight-row td strong { color: var(--magenta); }

.spec-table { width: 100%; border-collapse: collapse; font-size: 0.88rem; }
.spec-table td {
  padding: 13px 20px; border-bottom: 1px solid var(--border-lt);
  vertical-align: top; color: var(--text-lt);
}
.spec-table tr:last-child td { border-bottom: none; }
.spec-table tr.table-row-visible { animation: rowFadeIn 0.4s ease both; }
.spec-key {
  font-family: var(--font-mono); font-size: 0.65rem;
  text-transform: uppercase; letter-spacing: 0.09em;
  color: var(--text-muted-lt); width: 160px;
  background: var(--cream-2); white-space: nowrap;
}

#technology .btn-primary {
  display: inline-flex; margin-top: 8px;
}
#technology code {
  background: rgba(13,12,12,0.07); color: var(--magenta-dark);
}

/* ===========================
   APPLICATIONS
   =========================== */
#applications {
  background: var(--dark);
  padding: 0 0 var(--section-py) 0;
}
.section-desc-dark { color: var(--text-muted-dk); font-size: 0.97rem; margin-bottom: 52px; margin-top: 28px; }

.app-grid {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 20px; margin-bottom: 52px;
}

/* 누끼 cut-out card */
.app-card-cut {
  background: var(--dark-3);
  border-radius: var(--r-2xl);
  overflow: hidden;
  border: 1px solid var(--border-dk);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.app-card-cut:hover {
  transform: translateY(-5px);
  box-shadow: 0 24px 64px rgba(0,0,0,0.4);
}

.app-img-stage {
  height: 300px;
  display: flex; align-items: center; justify-content: center;
  padding: 36px 40px 20px;
  overflow: hidden;
  background: var(--dark-3);
}
.app-cut-img {
  max-width: 100%; max-height: 100%;
  object-fit: contain;
  mix-blend-mode: multiply;
  display: block;
  transition: transform 0.45s ease;
}
/* 투명 PNG — mix-blend-mode 불필요 */
.app-cut-transparent {
  mix-blend-mode: normal;
}
.app-card-cut:hover .app-cut-img { transform: scale(1.04); }

.app-card-body {
  padding: 24px 36px 36px;
  border-top: 1px solid var(--border-dk);
}
.app-cat-label {
  display: block;
  font-family: var(--font-mono); font-size: 0.65rem; font-weight: 700;
  text-transform: uppercase; letter-spacing: 0.2em;
  color: var(--magenta-bright); margin-bottom: 10px;
}
.app-card-body h3 {
  color: var(--text-dk); font-size: 1.1rem;
  letter-spacing: -0.03em; margin-bottom: 16px;
}
.app-card-body ul {
  display: flex; flex-direction: column; gap: 9px;
}
.app-card-body li {
  font-size: 0.82rem; color: var(--text-muted-dk);
  line-height: 1.6; padding-left: 14px; position: relative;
}
.app-card-body li::before {
  content: '—'; position: absolute; left: 0;
  color: var(--magenta-bright);
}

.app-cta {
  padding: 36px 40px; background: var(--dark-3);
  border-radius: var(--r-xl); border: 1px solid var(--border-dk);
  display: flex; align-items: center; justify-content: space-between;
  gap: 32px; flex-wrap: wrap;
}
.app-cta-title {
  font-weight: 700; font-size: 1rem; margin-bottom: 6px;
  letter-spacing: -0.03em; color: var(--text-dk);
}
.app-cta > div > p { font-size: 0.92rem; color: var(--text-muted-dk); margin-bottom: 0; }

/* ===========================
   PHILOSOPHY
   =========================== */
#philosophy {
  background: var(--cream);
  padding: var(--section-py) 0;
  color: var(--text-lt);
}
#philosophy .section-label { color: var(--magenta); }
.philosophy-grid {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 80px; align-items: start;
}
.philosophy-text h2 { color: var(--text-lt); margin-bottom: 28px; }
.philosophy-text p { color: var(--text-muted-lt); font-size: 0.97rem; }
.philosophy-quote {
  font-size: 1rem !important; font-weight: 700;
  color: var(--text-lt) !important;
  border-left: 3px solid var(--magenta);
  padding-left: 20px; margin-top: 20px;
  line-height: 1.8; letter-spacing: -0.02em;
}
.principles-heading {
  font-family: var(--font-mono); font-size: 0.67rem; font-weight: 600;
  text-transform: uppercase; letter-spacing: 0.16em;
  color: var(--text-muted-lt); margin-bottom: 24px;
}
.principles-list { display: flex; flex-direction: column; gap: 12px; }
.principles-list li {
  display: flex; gap: 16px; align-items: flex-start;
  padding: 18px 22px; background: var(--cream-2);
  border-radius: var(--r-md); border: 1px solid var(--border-lt);
  opacity: 0;
  transition: border-color 0.18s, transform 0.2s;
}
.principles-list li.principle-visible {
  animation: principleSlide 0.5s cubic-bezier(.25,.8,.25,1) both;
}
.principles-list li.principle-visible:hover {
  border-color: var(--magenta); transform: translateX(4px);
}
.check { color: var(--magenta); font-size: 0.95rem; font-weight: 800; flex-shrink: 0; margin-top: 2px; }
.principles-list strong {
  display: block; font-size: 0.86rem; font-weight: 700;
  margin-bottom: 3px; color: var(--text-lt);
}
.principles-list span { font-size: 0.76rem; color: var(--text-muted-lt); }

#philosophy .section-divider { background: var(--border-lt); }
.news-section h3 { color: var(--text-lt); margin-bottom: 12px; }
.news-placeholder { color: var(--text-muted-lt); font-size: 0.9rem; font-style: italic; }

/* ===========================
   CONTACT
   =========================== */
#contact {
  background: var(--dark);
  padding: var(--section-py) 0;
}
#contact h2 { color: var(--text-dk); }
.contact-desc {
  color: var(--text-muted-dk); font-size: 0.97rem;
  margin-top: 16px; word-break: keep-all;
}
#contact-form { margin-top: 52px; }
.form-grid {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 16px; margin-bottom: 16px;
}
.form-group { display: flex; flex-direction: column; gap: 8px; }
.form-group-full { margin-bottom: 0; }
label {
  font-size: 0.78rem; font-weight: 600;
  color: rgba(249,247,241,0.65);
}
.req { color: var(--magenta-bright); }
.optional { font-weight: 400; color: rgba(249,247,241,0.32); }
input, textarea {
  font-family: var(--font-sans); font-size: 0.9rem;
  padding: 13px 16px; background: rgba(255,255,255,0.05);
  border: 1.5px solid rgba(255,255,255,0.1); border-radius: var(--r-md);
  color: var(--text-dk); outline: none; resize: vertical;
  -webkit-appearance: none;
  transition: border-color 0.18s, background 0.18s, box-shadow 0.18s;
}
input::placeholder, textarea::placeholder { color: rgba(249,247,241,0.2); }
input:focus, textarea:focus {
  border-color: var(--magenta-bright);
  background: rgba(255,255,255,0.08);
  box-shadow: 0 0 0 3px rgba(192,16,97,0.18);
}
#contact-form .btn { margin-top: 28px; }

.form-success {
  margin-top: 40px; padding: 44px; text-align: center;
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(192,16,97,0.28);
  border-radius: var(--r-xl);
}
.form-success-icon {
  font-size: 2rem; color: var(--magenta-bright);
  margin-bottom: 16px; font-weight: 800;
}
.form-success p { font-size: 1rem; color: var(--text-dk); line-height: 1.8; }
.success-email {
  font-family: var(--font-mono); font-size: 0.84rem !important;
  color: var(--magenta-bright) !important; margin-top: 8px;
}

.contact-footer {
  display: flex; flex-wrap: wrap; align-items: center;
  gap: 20px; margin-top: 52px; padding-top: 32px;
  border-top: 1px solid var(--border-dk);
}
.contact-email {
  font-family: var(--font-mono); font-size: 0.88rem; font-weight: 600;
  color: var(--magenta-bright); text-decoration: underline;
  text-underline-offset: 4px;
}
.contact-footer span { font-size: 0.82rem; color: var(--text-muted-dk); }

/* ===========================
   FOOTER
   =========================== */
footer { background: #080707; padding: 32px 0; }
.footer-inner {
  display: flex; align-items: center;
  justify-content: space-between; flex-wrap: wrap; gap: 12px;
}
.footer-logo { font-size: 1rem; font-weight: 800; letter-spacing: -0.05em; color: #fff; }
.footer-copy { font-size: 0.8rem; color: #4A4848; }
.footer-email { font-size: 0.82rem; color: #4A4848; transition: color 0.18s; }
.footer-email:hover { color: #fff; }

/* ===========================
   REDUCED MOTION
   =========================== */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}

/* ===========================
   RESPONSIVE
   =========================== */
@media (max-width: 1020px) {
  .hero-inner { grid-template-columns: 1fr; gap: 52px; }
  .hero-visual { display: none; }
}

@media (max-width: 860px) {
  :root { --pad-x: 28px; --section-py: 80px; }
  .problem-cards { grid-template-columns: 1fr; gap: 14px; }
  .properties-grid { grid-template-columns: 1fr; }
  .app-grid { grid-template-columns: 1fr; }
  .philosophy-grid { grid-template-columns: 1fr; gap: 52px; }
  .form-grid { grid-template-columns: 1fr; }
  .app-cta { flex-direction: column; align-items: flex-start; }
  .process-flow {
    display: grid; grid-template-columns: 1fr 1fr; gap: 28px;
  }
  .process-connector { display: none; }
  .stats-row { flex-wrap: wrap; }
  .stat-item { flex: 0 0 50%; padding: 16px; }
  .stat-sep { display: none; }
}

@media (max-width: 580px) {
  :root { --section-py: 60px; --pad-x: 20px; }
  #hero { padding: 64px 0 0; }
  .hero-inner { padding-bottom: 60px; }
  .nav-links { display: none; }
  .hamburger { display: flex; }
  .btn-group { flex-direction: column; }
  .btn { width: 100%; justify-content: center; }
  .process-flow { grid-template-columns: 1fr; }
  .spec-key { width: auto; }
  .footer-inner { flex-direction: column; align-items: flex-start; gap: 6px; }
  .callout-badges { flex-direction: column; }
  .callout-badges span { text-align: center; }
  .stat-item { flex: 0 0 100%; }
  .app-card-img { aspect-ratio: 4/5; }
}

/* ===========================
   APPLICATIONS CATEGORY TABS
   =========================== */
.category-tabs {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  justify-content: center;
  margin: 60px 0 40px;
}
.category-btn {
  padding: 12px 28px;
  background: var(--dark-3);
  border: 1.5px solid var(--border-dk);
  border-radius: var(--r-md);
  color: var(--text-dk);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.22s ease;
}
.category-btn:hover {
  border-color: var(--magenta);
  color: var(--magenta-bright);
}
.category-btn.active {
  background: var(--magenta-bright);
  border-color: var(--magenta-bright);
  color: var(--dark);
}

/* Formulas Grid & Cards */
.formulas-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 24px;
  margin-bottom: 40px;
}
.formula-card {
  background: var(--dark-3);
  border: 1px solid var(--border-dk);
  border-radius: var(--r-lg);
  overflow: hidden;
  transition: all 0.22s ease;
  display: flex;
  flex-direction: column;
}
.formula-card:hover {
  border-color: var(--magenta-soft);
  box-shadow: 0 8px 32px rgba(192,16,97,0.1);
  transform: translateY(-4px);
}
.formula-img {
  width: 100%;
  height: 240px;
  background: var(--dark-4);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}
.formula-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.formula-info {
  padding: 20px;
  flex: 1;
  display: flex;
  flex-direction: column;
}
.formula-info h5 {
  font-size: 1rem;
  font-weight: 700;
  margin: 0 0 6px;
  color: var(--text-dk);
}

/* Subsection Headers */
.formulas-subsection {
  margin-bottom: 50px;
}
.formulas-subsection h4 {
  font-size: 1.1rem;
  margin: 30px 0 20px;
  color: var(--magenta-bright);
  font-weight: 600;
}

/* Category Content Display */
.category-content {
  animation: fadeIn 0.3s ease-in-out;
}
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

#news-grid > div { opacity: 1 !important; transform: none !important; }