/* ==========================================================================
   TOTAPO — Digital Product Studio & Systems
   ========================================================================== */

/* ─── Local Font Definition: Pretendard Variable (Self-Hosted) ─── */
@font-face {
  font-family: 'Pretendard Variable';
  font-weight: 45 920;
  font-style: normal;
  font-display: swap;
  src: url('/assets/fonts/PretendardVariable.woff2') format('woff2-variations');
}

/* ─── Design Tokens & Variables ─── */
:root {
  --bg: #09090b;
  --bg-surface: #111115;
  --bg-elevated: #17171d;
  --bg-card: rgba(18, 18, 23, 0.72);
  --bg-card-hover: rgba(26, 26, 33, 0.85);

  --ink: #f5f3ee;
  --ink-secondary: #c2beba;
  --ink-mute: #7e7a74;
  --ink-faint: #3e3b36;
  --ink-contrast: #09090b;

  --accent-warm: #dfd2b8;
  --accent-warm-light: #ece3d2;
  --accent-glow: rgba(223, 210, 184, 0.12);

  --rule: #1c1b20;
  --rule-light: rgba(255, 255, 255, 0.10);
  --rule-bright: rgba(255, 255, 255, 0.22);

  --font-sans: "Pretendard Variable", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Apple SD Gothic Neo", "Malgun Gothic", sans-serif;
  --font-mono: "JetBrains Mono", "SF Mono", "Fira Code", Menlo, Consolas, monospace;

  --container-max: 1400px;
  --container-wide: 1680px;

  --ease-expo: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-smooth: cubic-bezier(0.25, 0.1, 0.25, 1);
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  background-color: var(--bg);
  color: var(--ink);
  font-family: var(--font-sans);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
  overflow-x: clip;
  max-width: 100%;
  width: 100%;
}

body {
  position: relative;
  overflow-x: hidden;
  overflow-x: clip;
  max-width: 100%;
  width: 100%;
  line-height: 1.6;
  background-color: var(--bg);
  color: var(--ink);
  min-height: 100vh;
  letter-spacing: -0.01em;
}

::selection {
  background: var(--ink);
  color: var(--bg);
}

a {
  color: inherit;
  text-decoration: none;
  transition: opacity 0.25s ease, color 0.25s ease;
}

button {
  font-family: inherit;
  border: none;
  background: none;
  color: inherit;
  cursor: pointer;
}

ul, ol {
  list-style: none;
}

input, select, textarea {
  font-family: inherit;
  color: inherit;
  background: none;
  border: none;
  outline: none;
}

/* ─── Custom Precision Cursor (Desktop Only) ─── */
@media (pointer: fine) {
  html.custom-cursor-active,
  html.custom-cursor-active body {
    cursor: none;
  }
  html.custom-cursor-active a,
  html.custom-cursor-active button {
    cursor: none;
  }
  html.custom-cursor-active input,
  html.custom-cursor-active textarea {
    cursor: text !important;
  }
  html.custom-cursor-active select {
    cursor: pointer !important;
  }
  .cursor-dot {
    position: fixed;
    top: 0;
    left: 0;
    width: 6px;
    height: 6px;
    background: var(--ink);
    border-radius: 50%;
    pointer-events: none;
    z-index: 9999;
    transform: translate(-50%, -50%);
    transition: transform 0.05s linear, opacity 0.2s ease, width 0.2s ease, height 0.2s ease;
  }
  .cursor-dot.cursor-hidden {
    opacity: 0 !important;
  }
  .cursor-ring {
    position: fixed;
    top: 0;
    left: 0;
    width: 38px;
    height: 38px;
    border: 1px solid rgba(245, 243, 238, 0.35);
    border-radius: 50%;
    pointer-events: none;
    z-index: 9998;
    transform: translate(-50%, -50%);
    transition: width 0.25s var(--ease-expo), height 0.25s var(--ease-expo), border-color 0.25s ease, background 0.25s ease, opacity 0.2s ease;
  }
  .cursor-ring.cursor-hidden {
    opacity: 0 !important;
  }
  .cursor-ring.active {
    width: 64px;
    height: 64px;
    border-color: var(--accent-warm);
    background: rgba(223, 210, 184, 0.06);
  }
}

@media (pointer: coarse) {
  .cursor-dot, .cursor-ring {
    display: none !important;
  }
}

/* ─── Architectural Grid Background (Pure CSS) ─── */
.bg-grid-overlay {
  position: fixed;
  inset: 0;
  width: 100vw;
  height: 100vh;
  z-index: 0;
  pointer-events: none;
  background-image:
    radial-gradient(circle at 1px 1px, rgba(245, 243, 238, 0.038) 1px, transparent 0);
  background-size: 36px 36px;
  background-position: -1px -1px;
}

/* ─── Ambient Atmospheric Radiance (Pure CSS) ─── */
.ambient-radiance-top {
  position: absolute;
  top: -240px;
  left: 50%;
  transform: translateX(-50%);
  width: min(1200px, 100vw);
  max-width: 100%;
  height: 700px;
  background: radial-gradient(ellipse at 50% 30%, rgba(223, 210, 184, 0.055), rgba(245, 243, 238, 0.02) 40%, transparent 70%);
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}

.ambient-radiance-mid {
  position: absolute;
  top: 1900px;
  right: 0;
  width: min(1000px, 100vw);
  max-width: 100%;
  height: 1000px;
  background: radial-gradient(circle, rgba(223, 210, 184, 0.03), transparent 60%);
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}

/* ─── Interactive Fluid Canvas (Pure 2D Canvas) ─── */
#canvasBackground {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: 0;
  pointer-events: none;
  opacity: 0.65;
}

/* ─── Layout Wrapper & Containers ─── */
.site-wrapper {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 100vw;
  overflow-x: hidden;
  overflow-x: clip;
}

.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 clamp(20px, 4vw, 56px);
}

.container-wide {
  width: 100%;
  max-width: var(--container-wide);
  margin: 0 auto;
  padding: 0 clamp(20px, 4vw, 56px);
}

/* ─── Top Utility Meta Bar ─── */
.top-meta-bar {
  border-bottom: 1px solid var(--rule);
  background: rgba(9, 9, 11, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  font-family: var(--font-mono);
  font-size: 0.76rem;
  color: var(--ink-mute);
  letter-spacing: 0.02em;
  padding: 8px 0;
}

.top-meta-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}

.meta-group-left, .meta-group-right {
  display: flex;
  align-items: center;
  gap: 16px;
}

.pulse-indicator {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--ink);
  font-weight: 500;
}

.pulse-dot {
  width: 6px;
  height: 6px;
  background: var(--accent-warm);
  border-radius: 50%;
  box-shadow: 0 0 8px rgba(223, 210, 184, 0.8);
  animation: pulseLight 2.4s ease-in-out infinite;
}

@keyframes pulseLight {
  0%, 100% { opacity: 0.35; transform: scale(0.9); }
  50% { opacity: 1; transform: scale(1.2); }
}

.meta-divider {
  width: 1px;
  height: 12px;
  background: var(--rule-bright);
}

.meta-email-link {
  color: var(--accent-warm);
  transition: opacity 0.2s ease;
}
.meta-email-link:hover {
  text-decoration: underline;
  opacity: 0.8;
}

/* ─── Sticky Minimal GNB Header ─── */
.site-header {
  position: sticky;
  top: 0;
  z-index: 200;
  background: rgba(9, 9, 11, 0.7);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid transparent;
  transition: background 0.3s ease, border-color 0.3s ease, padding 0.3s ease;
  padding: 22px 0;
}

.site-header.scrolled {
  background: rgba(9, 9, 11, 0.92);
  border-color: var(--rule);
  padding: 14px 0;
}

.header-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

/* Brand Identity */
.brand-identity {
  display: flex;
  align-items: baseline;
  gap: 12px;
}

.brand-mark-wrapper {
  display: inline-flex;
  align-items: baseline;
  gap: 10px;
}

.brand-title {
  font-size: 1.45rem;
  font-weight: 700;
  letter-spacing: -0.04em;
  color: var(--ink);
  line-height: 1;
}

.brand-square {
  display: inline-block;
  width: 7px;
  height: 7px;
  background: var(--accent-warm);
  border-radius: 1px;
  transition: transform 0.4s var(--ease-expo), background-color 0.3s ease;
}

.brand-identity:hover .brand-square {
  transform: rotate(45deg) scale(1.25);
  background: var(--ink);
}

.brand-descriptor {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--ink-mute);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

/* Desktop Navigation */
.desktop-nav {
  display: flex;
  align-items: center;
  gap: 36px;
}

.nav-anchor {
  font-size: 0.86rem;
  font-weight: 500;
  letter-spacing: -0.01em;
  color: var(--ink-secondary);
  position: relative;
  padding: 6px 0;
  transition: color 0.25s ease;
}

.nav-anchor .nav-idx {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--ink-mute);
  margin-right: 4px;
}

.nav-anchor::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--ink);
  transition: width 0.35s var(--ease-expo);
}

.nav-anchor:hover {
  color: var(--ink);
}

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

/* Header Actions */
.header-actions-group {
  display: flex;
  align-items: center;
  gap: 18px;
}

.btn-header-inquire {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 20px;
  font-size: 0.84rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--bg);
  background: var(--ink);
  border-radius: 999px;
  transition: transform 0.25s var(--ease-expo), background 0.25s ease;
}

.btn-header-inquire:hover {
  background: var(--accent-warm-light);
  transform: translateY(-1px);
}

.btn-header-inquire .arrow {
  font-family: var(--font-mono);
  font-size: 0.88rem;
  transition: transform 0.3s ease;
}

.btn-header-inquire:hover .arrow {
  transform: translate(2px, -2px);
}

/* Mobile Menu Toggle (Zero SVG, pure CSS bars) */
.mobile-nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  padding: 8px;
  z-index: 120;
}

.mobile-nav-toggle .line {
  display: block;
  width: 100%;
  height: 1.5px;
  background: var(--ink);
  transition: transform 0.3s ease, opacity 0.3s ease;
}

.mobile-nav-toggle.active .line:nth-child(1) {
  transform: translateY(6.5px) rotate(45deg);
}

.mobile-nav-toggle.active .line:nth-child(2) {
  opacity: 0;
}

.mobile-nav-toggle.active .line:nth-child(3) {
  transform: translateY(-6.5px) rotate(-45deg);
}

/* Mobile Drawer Overlay */
.mobile-drawer-overlay {
  position: fixed;
  inset: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(9, 9, 11, 0.97);
  backdrop-filter: blur(24px);
  z-index: 190;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 100px 32px 48px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.35s ease;
}

.mobile-drawer-overlay.open {
  opacity: 1;
  pointer-events: auto;
}

.mobile-links-list {
  display: flex;
  flex-direction: column;
  gap: 22px;
}

.mobile-drawer-link {
  font-size: 1.85rem;
  font-weight: 600;
  letter-spacing: -0.03em;
  color: var(--ink);
  display: flex;
  align-items: baseline;
  gap: 16px;
}

.mobile-drawer-link .m-idx {
  font-family: var(--font-mono);
  font-size: 0.95rem;
  color: var(--ink-mute);
}

.mobile-drawer-footer {
  border-top: 1px solid var(--rule);
  padding-top: 24px;
  font-size: 0.85rem;
  color: var(--ink-mute);
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.mobile-drawer-footer a {
  color: var(--accent-warm);
  font-size: 1.1rem;
  font-weight: 500;
}

/* ─── Kinetic Typography Marquee Banner ─── */
.kinetic-marquee-section {
  width: 100%;
  max-width: 100vw;
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
  background: rgba(17, 17, 21, 0.4);
  overflow: hidden;
  white-space: nowrap;
  padding: 14px 0;
  contain: paint;
}

.marquee-track {
  display: inline-flex;
  animation: marqueeRoll 32s linear infinite;
  gap: 40px;
}

.marquee-item {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-secondary);
  display: inline-flex;
  align-items: center;
  gap: 40px;
}

.marquee-sep {
  display: inline-block;
  width: 4px;
  height: 4px;
  background: var(--accent-warm);
  border-radius: 50%;
}

@keyframes marqueeRoll {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

/* ─── Hero Section ─── */
.hero-section {
  position: relative;
  min-height: 88vh;
  display: flex;
  align-items: center;
  padding: clamp(60px, 8vw, 120px) 0 clamp(80px, 10vw, 140px);
}

.hero-inner-content {
  width: 100%;
  display: flex;
  flex-direction: column;
}

.hero-eyebrow-row {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  letter-spacing: 0.08em;
  color: var(--ink-mute);
  text-transform: uppercase;
  margin-bottom: 32px;
}

.hero-eyebrow-row::before {
  content: "";
  width: 32px;
  height: 1px;
  background: var(--accent-warm);
}

/* Monolithic Display Title */
.hero-display-title {
  font-size: clamp(3.2rem, 9.2vw, 9.4rem);
  font-weight: 700;
  line-height: 0.94;
  letter-spacing: -0.06em;
  color: var(--ink);
  margin-bottom: 48px;
  word-break: keep-all;
}

.hero-display-title .title-line-ko {
  display: block;
  color: var(--ink);
}

.hero-display-title .title-line-en {
  display: block;
  color: var(--accent-warm);
  font-weight: 300;
  letter-spacing: -0.05em;
  text-transform: uppercase;
}

.hero-display-title .title-line-sub {
  display: block;
  color: var(--ink);
}

/* Hero Description & Sub Grid */
.hero-meta-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 48px;
  align-items: end;
  padding-top: 36px;
  border-top: 1px solid var(--rule);
}

.hero-lead-text {
  font-size: clamp(1.2rem, 2.2vw, 1.65rem);
  font-weight: 400;
  line-height: 1.5;
  letter-spacing: -0.025em;
  color: var(--ink-secondary);
  word-break: keep-all;
}

.hero-lead-text strong {
  color: var(--ink);
  font-weight: 600;
}

.hero-actions-column {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.btn-hero-primary {
  display: inline-flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 28px;
  background: var(--ink);
  color: var(--bg);
  border-radius: 4px;
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  transition: transform 0.25s var(--ease-expo), background 0.25s ease;
}

.btn-hero-primary:hover {
  background: var(--accent-warm-light);
  transform: translateX(4px);
}

.btn-hero-primary .arrow {
  font-family: var(--font-mono);
  font-size: 1.1rem;
}

.btn-hero-secondary {
  display: inline-flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 28px;
  background: transparent;
  color: var(--ink-secondary);
  border: 1px solid var(--rule-light);
  border-radius: 4px;
  font-size: 0.95rem;
  font-weight: 500;
  transition: border-color 0.25s ease, color 0.25s ease, background 0.25s ease;
}

.btn-hero-secondary:hover {
  border-color: var(--ink);
  color: var(--ink);
  background: rgba(255, 255, 255, 0.03);
}

/* ─── Studio Core Manifesto / Philosophy Section ─── */
.section-block {
  padding: clamp(90px, 13vw, 180px) 0;
  border-top: 1px solid var(--rule);
  position: relative;
}

.section-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.1em;
  color: var(--ink-mute);
  text-transform: uppercase;
  margin-bottom: 24px;
}

.section-eyebrow::before {
  content: "";
  width: 20px;
  height: 1px;
  background: var(--accent-warm);
}

.manifesto-quote {
  font-size: clamp(1.8rem, 4.4vw, 3.8rem);
  font-weight: 600;
  line-height: 1.25;
  letter-spacing: -0.045em;
  color: var(--ink);
  max-width: 32ch;
  margin-bottom: 72px;
  word-break: keep-all;
}

.manifesto-quote .highlight {
  color: var(--accent-warm);
  font-weight: 500;
  font-style: normal;
}

/* ─── Philosophy Section ─── */
.section-philosophy {
  position: relative;
}

.philosophy-editorial-wrapper {
  display: grid;
  grid-template-columns: 1fr 1.3fr;
  gap: clamp(48px, 6vw, 96px);
  align-items: start;
  margin-top: 64px;
}

.philosophy-manifesto-pane {
  position: sticky;
  top: 120px;
}

.philosophy-pillars-stream {
  display: flex;
  flex-direction: column;
}

.editorial-pillar-row {
  border-top: 1px solid var(--rule);
  padding: 40px 0;
  display: grid;
  grid-template-columns: 180px 1fr;
  gap: 32px;
  position: relative;
  transition: border-color 0.3s ease;
}

.editorial-pillar-row:last-child {
  border-bottom: 1px solid var(--rule);
}

.editorial-pillar-row::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--accent-warm);
  transition: width 0.4s var(--ease-expo);
}

.editorial-pillar-row:hover::before {
  width: 100%;
}

.pillar-row-index {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.pillar-num {
  font-family: var(--font-mono);
  font-size: 2.6rem;
  font-weight: 300;
  line-height: 1;
  color: var(--ink);
  letter-spacing: -0.04em;
}

.pillar-tag {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  color: var(--accent-warm);
  text-transform: uppercase;
}

.pillar-row-content {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.pillar-heading {
  font-size: clamp(1.2rem, 1.8vw, 1.5rem);
  font-weight: 600;
  letter-spacing: -0.025em;
  color: var(--ink);
  line-height: 1.35;
  word-break: keep-all;
}

.pillar-description {
  font-size: 0.95rem;
  color: var(--ink-secondary);
  line-height: 1.75;
  word-break: keep-all;
}

/* ─── Disciplines (What We Build — Interactive Showcase) ─── */
.disciplines-header-wrap {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  margin-bottom: 64px;
  flex-wrap: wrap;
  gap: 24px;
}

.section-headline {
  font-size: clamp(2.4rem, 5.5vw, 4.8rem);
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: -0.05em;
  color: var(--ink);
}

.section-summary-text {
  max-width: 52ch;
  font-size: 1.05rem;
  color: var(--ink-mute);
  line-height: 1.65;
  word-break: keep-all;
}

/* Disciplines List */
.disciplines-list {
  border-top: 1px solid var(--rule);
}

.discipline-row {
  border-bottom: 1px solid var(--rule);
  transition: background 0.3s ease;
}

.discipline-header {
  display: grid;
  grid-template-columns: 1.2fr 1.8fr auto;
  gap: 32px;
  align-items: center;
  padding: clamp(32px, 4vw, 54px) 0;
  cursor: pointer;
  position: relative;
  transition: padding-left 0.4s var(--ease-expo);
}

.discipline-row:hover .discipline-header {
  padding-left: 16px;
}

.discipline-index {
  font-family: var(--font-mono);
  font-size: 1rem;
  color: var(--ink-mute);
  letter-spacing: 0.05em;
  transition: color 0.3s ease;
}

.discipline-row:hover .discipline-index {
  color: var(--accent-warm);
}

.discipline-titles {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.disc-title-ko {
  font-size: clamp(1.6rem, 3.2vw, 2.6rem);
  font-weight: 600;
  letter-spacing: -0.04em;
  color: var(--ink);
  line-height: 1.15;
}

.disc-title-en {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--ink-mute);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.disc-lead-summary {
  font-size: 1rem;
  color: var(--ink-secondary);
  line-height: 1.65;
  word-break: keep-all;
}

.disc-toggle-indicator {
  width: 44px;
  height: 44px;
  border: 1px solid var(--rule-light);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-size: 1.2rem;
  color: var(--ink-mute);
  transition: transform 0.4s var(--ease-expo), border-color 0.3s ease, color 0.3s ease, background 0.3s ease;
}

.discipline-row.active .disc-toggle-indicator {
  transform: rotate(45deg);
  border-color: var(--accent-warm);
  color: var(--bg);
  background: var(--accent-warm);
}

/* Discipline Expandable Specifications Panel */
.discipline-drawer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.6s var(--ease-expo);
}

.discipline-row.active .discipline-drawer {
  max-height: 800px;
}

.discipline-drawer-inner {
  padding: 0 0 clamp(40px, 5vw, 64px) clamp(80px, 6vw, 112px);
}

.spec-columns-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
  padding: 36px 0 16px;
  background: transparent;
  border: none;
  border-top: 1px solid var(--rule);
}

.spec-col h4 {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent-warm);
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--rule);
}

.spec-col ul {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.spec-col li {
  font-size: 0.92rem;
  color: var(--ink-secondary);
  position: relative;
  padding-left: 14px;
  line-height: 1.55;
  word-break: keep-all;
}

.spec-col li::before {
  content: "—";
  position: absolute;
  left: 0;
  color: var(--ink-mute);
}

/* ─── Engineering Architecture Standards (Editorial Spec Matrix) ─── */
.editorial-architecture-matrix {
  border-top: 1px solid var(--rule);
  margin-top: 56px;
}

.arch-spec-row {
  display: grid;
  grid-template-columns: 240px 1.4fr 1.1fr;
  gap: 36px;
  align-items: start;
  padding: clamp(32px, 3.5vw, 44px) 0;
  border-bottom: 1px solid var(--rule);
  transition: padding-left 0.35s var(--ease-expo), border-color 0.3s ease;
  position: relative;
}

.arch-spec-row:hover {
  padding-left: 14px;
  border-bottom-color: var(--rule-bright);
}

.arch-spec-meta {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.arch-spec-num {
  font-family: var(--font-mono);
  font-size: 1.6rem;
  font-weight: 300;
  color: var(--accent-warm);
  line-height: 1;
}

.arch-spec-domain {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.1em;
  color: var(--ink-mute);
  text-transform: uppercase;
}

.arch-spec-body {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.arch-spec-title {
  font-size: clamp(1.25rem, 1.8vw, 1.55rem);
  font-weight: 600;
  letter-spacing: -0.025em;
  color: var(--ink);
  line-height: 1.25;
}

.arch-spec-desc {
  font-size: 0.95rem;
  color: var(--ink-secondary);
  line-height: 1.65;
  word-break: keep-all;
}

.arch-spec-tags {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  align-self: center;
}

.arch-tag-item {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.04em;
  color: var(--ink-mute);
  padding: 0;
  background: transparent;
  border: none;
  display: inline-flex;
  align-items: center;
  transition: color 0.25s ease;
}

.arch-tag-item:not(:last-child)::after {
  content: "/";
  margin-left: 12px;
  color: var(--rule-bright);
}

.arch-spec-row:hover .arch-tag-item {
  color: var(--ink-secondary);
}

/* ─── 5-Step Methodology (Editorial Process Stream — Zero Card Boxes) ─── */
.methodology-stream-list {
  display: flex;
  flex-direction: column;
  margin-top: 64px;
}

.method-step-row {
  border-top: 1px solid var(--rule);
  padding: 36px 0;
  display: grid;
  grid-template-columns: 240px 1fr 280px;
  gap: 40px;
  align-items: baseline;
  position: relative;
  transition: background-color 0.3s ease;
}

.method-step-row:last-child {
  border-bottom: 1px solid var(--rule);
}

.method-step-row::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--accent-warm);
  transition: width 0.4s var(--ease-expo);
}

.method-step-row:hover::before {
  width: 100%;
}

.method-step-meta {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.method-num {
  font-family: var(--font-mono);
  font-size: 1.8rem;
  font-weight: 300;
  color: var(--ink);
  letter-spacing: -0.03em;
  line-height: 1;
}

.method-tag {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  color: var(--accent-warm);
  text-transform: uppercase;
}

.method-step-body {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.method-title {
  font-size: 1.15rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--ink);
  line-height: 1.4;
}

.method-desc {
  font-size: 0.92rem;
  color: var(--ink-secondary);
  line-height: 1.7;
  word-break: keep-all;
}

.method-step-output {
  display: flex;
  flex-direction: column;
  gap: 6px;
  align-self: start;
}

.output-label {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  color: var(--ink-mute);
  text-transform: uppercase;
}

.output-text {
  font-size: 0.85rem;
  color: var(--ink);
  line-height: 1.5;
  word-break: keep-all;
}

/* ─── Streamlined Minimal Inquiry Studio (Editorial Brief & Direct Contact) ─── */
.section-inquiry {
  position: relative;
}

.inquiry-editorial-grid {
  display: grid;
  grid-template-columns: 1fr 1.15fr;
  gap: clamp(48px, 6vw, 96px);
  align-items: start;
}

.inquiry-editorial-col {
  display: flex;
  flex-direction: column;
  gap: 32px;
}

.inquiry-lead-description {
  font-size: 1.05rem;
  line-height: 1.8;
  color: var(--ink-secondary);
  word-break: keep-all;
}

.inquiry-direct-channel {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin: 16px 0;
  padding: 0;
  border: none;
  background: transparent;
}

.direct-caption {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  color: var(--ink-mute);
  text-transform: uppercase;
}

.direct-email-link {
  font-size: clamp(1.8rem, 3.2vw, 2.6rem);
  font-weight: 600;
  letter-spacing: -0.03em;
  color: var(--ink);
  display: inline-flex;
  align-items: baseline;
  gap: 12px;
  text-decoration: none;
  transition: color 0.25s ease;
  width: fit-content;
}

.direct-email-link:hover {
  color: var(--accent-warm);
}

.direct-email-link .arrow {
  font-family: var(--font-mono);
  font-size: 1.4rem;
}

.btn-copy-action {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.08em;
  color: var(--ink-mute);
  background: transparent;
  border: 1px solid var(--rule);
  padding: 8px 16px;
  border-radius: 2px;
  cursor: pointer;
  align-self: flex-start;
  transition: all 0.25s ease;
}

.btn-copy-action:hover {
  color: var(--ink);
  border-color: var(--rule-bright);
}

.inquiry-guarantee-note {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.86rem;
  color: var(--ink-mute);
  line-height: 1.5;
}

.guarantee-dot {
  width: 6px;
  height: 6px;
  background: var(--accent-warm);
  border-radius: 50%;
  flex-shrink: 0;
}

/* Minimal Interactive Form */
.inquiry-interactive-col {
  display: flex;
  flex-direction: column;
}

.minimal-inquiry-form {
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.minimal-field {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.minimal-label {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--ink);
  letter-spacing: -0.01em;
}

.minimal-textarea {
  width: 100%;
  background: rgba(255, 255, 255, 0.025);
  border: 1px solid var(--rule);
  border-radius: 2px;
  padding: 20px;
  font-size: 1rem;
  font-family: var(--font-sans);
  color: var(--ink);
  line-height: 1.7;
  resize: vertical;
  min-height: 200px;
  transition: border-color 0.25s ease, background 0.25s ease;
}

.minimal-textarea:focus {
  outline: none;
  border-color: var(--accent-warm);
  background: rgba(255, 255, 255, 0.05);
}

.minimal-textarea::placeholder {
  color: var(--ink-mute);
  opacity: 0.65;
  line-height: 1.6;
}

.minimal-input {
  width: 100%;
  height: 56px;
  background: rgba(255, 255, 255, 0.025);
  border: 1px solid var(--rule);
  border-radius: 2px;
  padding: 0 20px;
  font-size: 1rem;
  font-family: var(--font-sans);
  color: var(--ink);
  transition: border-color 0.25s ease, background 0.25s ease;
}

.minimal-input:focus {
  outline: none;
  border-color: var(--accent-warm);
  background: rgba(255, 255, 255, 0.05);
}

.minimal-input::placeholder {
  color: var(--ink-mute);
  opacity: 0.65;
}

.minimal-privacy-row {
  margin: 6px 0 10px;
}

.privacy-label {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.88rem;
  color: var(--ink-secondary);
  cursor: pointer;
  user-select: none;
}

.privacy-label input[type="checkbox"] {
  width: 16px;
  height: 16px;
  accent-color: var(--accent-warm);
  cursor: pointer;
}

.form-action-wrap {
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin-top: 8px;
}

.btn-submit-streamlined {
  width: 100%;
  height: 60px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0 32px;
  background: var(--ink);
  color: var(--bg);
  border: none;
  border-radius: 2px;
  font-size: 1.05rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  cursor: pointer;
  transition: background 0.25s ease, transform 0.2s ease;
}

.btn-submit-streamlined:hover:not(:disabled) {
  background: var(--accent-warm);
  transform: translateY(-2px);
}

.btn-submit-streamlined:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.btn-submit-streamlined .arrow {
  font-family: var(--font-mono);
  font-size: 1.2rem;
  transition: transform 0.25s ease;
}

.btn-submit-streamlined:hover .arrow {
  transform: translateX(4px);
}

.form-disclaimer {
  font-size: 0.8rem;
  color: var(--ink-mute);
  line-height: 1.55;
  word-break: keep-all;
}

/* ─── FAQ Section ─── */
.faq-accordion-list {
  border-top: 1px solid var(--rule);
  margin-top: 56px;
}

.faq-row {
  border-bottom: 1px solid var(--rule);
}

.faq-toggle-trigger {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: clamp(24px, 3vw, 36px) 0;
  text-align: left;
  font-size: clamp(1.05rem, 1.8vw, 1.35rem);
  font-weight: 500;
  letter-spacing: -0.025em;
  color: var(--ink);
  transition: color 0.25s ease;
}

.faq-toggle-trigger:hover {
  color: var(--accent-warm);
}

.faq-toggle-icon {
  font-family: var(--font-mono);
  font-size: 1.4rem;
  color: var(--ink-mute);
  transition: transform 0.3s var(--ease-expo), color 0.3s ease;
  margin-left: 16px;
}

.faq-row.active .faq-toggle-icon {
  transform: rotate(45deg);
  color: var(--accent-warm);
}

.faq-content-drawer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.5s var(--ease-expo);
}

.faq-row.active .faq-content-drawer {
  max-height: 400px;
}

.faq-content-inner {
  padding-bottom: clamp(24px, 3vw, 36px);
  font-size: 0.98rem;
  color: var(--ink-secondary);
  line-height: 1.75;
  max-width: 80ch;
  word-break: keep-all;
}

/* ─── Monolithic Agency Footer ─── */
.site-footer {
  border-top: 1px solid var(--rule);
  background: var(--bg-surface);
  padding: clamp(80px, 12vw, 140px) 0 48px;
  position: relative;
  overflow: hidden;
}

.footer-brand-watermark {
  font-size: clamp(4.5rem, 16vw, 18rem);
  font-weight: 800;
  line-height: 0.85;
  letter-spacing: -0.07em;
  color: rgba(255, 255, 255, 0.035);
  user-select: none;
  pointer-events: none;
  margin-bottom: clamp(40px, 6vw, 80px);
}

.footer-columns-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 64px;
  border-bottom: 1px solid var(--rule);
}

.footer-brand-info h4 {
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--ink);
  margin-bottom: 12px;
}

.footer-brand-info p {
  font-size: 0.88rem;
  color: var(--ink-mute);
  line-height: 1.65;
  word-break: keep-all;
}

.footer-col-nav h5 {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent-warm);
  margin-bottom: 18px;
}

.footer-col-nav ul {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-col-nav a {
  font-size: 0.88rem;
  color: var(--ink-secondary);
  transition: color 0.2s ease;
}

.footer-legal-row {
  padding-top: 44px;
  padding-bottom: 20px;
  border-top: 1px solid var(--border-subtle);
  margin-top: 48px;
}

.footer-legal-info {
  font-size: 0.76rem;
  line-height: 1.85;
  color: var(--ink-mute);
  word-break: keep-all;
}

.footer-legal-info span {
  display: inline-block;
}

.footer-legal-info .sep {
  margin: 0 8px;
  color: rgba(245, 243, 238, 0.18);
}

.footer-copyright-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  padding-top: 20px;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  color: var(--ink-mute);
}

/* ─── Modal Popup Confirmation ─── */
.modal-overlay-backdrop {
  position: fixed;
  inset: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(9, 9, 11, 0.88);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.35s ease;
}

.modal-overlay-backdrop.open {
  opacity: 1;
  pointer-events: auto;
}

.modal-dialog-box {
  width: 100%;
  max-width: 600px;
  background: var(--bg-surface);
  border: 1px solid var(--rule-bright);
  padding: clamp(32px, 5vw, 48px);
  border-radius: 4px;
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.7);
  transform: translateY(20px);
  transition: transform 0.35s var(--ease-expo);
}

.modal-overlay-backdrop.open .modal-dialog-box {
  transform: translateY(0);
}

.modal-badge-status {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.1em;
  color: var(--accent-warm);
  margin-bottom: 16px;
}

.modal-heading {
  font-size: 1.65rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  color: var(--ink);
  line-height: 1.25;
  margin-bottom: 16px;
  word-break: keep-all;
}

.modal-detail-text {
  font-size: 0.95rem;
  color: var(--ink-secondary);
  line-height: 1.7;
  margin-bottom: 28px;
  word-break: keep-all;
}

.modal-detail-text strong {
  color: var(--ink);
}

.modal-inquiry-code {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 1.05rem;
  color: var(--accent-warm);
  background: rgba(223, 210, 184, 0.1);
  padding: 6px 14px;
  border-radius: 2px;
  margin: 8px 0;
}

.modal-btn-group {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.btn-modal-mailto {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 24px;
  background: var(--ink);
  color: var(--bg);
  font-weight: 600;
  font-size: 0.95rem;
  border-radius: 2px;
  transition: background 0.2s ease;
}

.btn-modal-mailto:hover {
  background: var(--accent-warm-light);
}

.btn-modal-dismiss {
  padding: 14px 24px;
  background: transparent;
  color: var(--ink-mute);
  font-size: 0.9rem;
  border: 1px solid var(--rule-light);
  border-radius: 2px;
  transition: color 0.2s ease, border-color 0.2s ease;
}

.btn-modal-dismiss:hover {
  color: var(--ink);
  border-color: var(--ink);
}

/* ─── Responsive Media Queries ─── */
@media (max-width: 1200px) {
  .hero-meta-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .discipline-header {
    grid-template-columns: 1.2fr 1fr auto;
    gap: 20px;
  }
  .arch-spec-row {
    grid-template-columns: 200px 1.2fr 1fr;
    gap: 24px;
  }
  .method-step-row {
    grid-template-columns: 200px 1fr 220px;
    gap: 24px;
  }
}

@media (max-width: 900px) {
  .desktop-nav {
    display: none;
  }
  .mobile-nav-toggle {
    display: flex;
  }
  .philosophy-editorial-wrapper {
    grid-template-columns: 1fr;
    gap: 48px;
  }
  .philosophy-manifesto-pane {
    position: static;
  }
  .editorial-pillar-row {
    grid-template-columns: 140px 1fr;
    gap: 24px;
    padding: 32px 0;
  }
  .discipline-header {
    grid-template-columns: 1fr auto;
  }
  .disc-lead-summary {
    display: none;
  }
  .spec-columns-grid {
    grid-template-columns: 1fr;
  }
  .arch-spec-row {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  .inquiry-editorial-grid {
    grid-template-columns: 1fr;
    gap: 48px;
  }
  .method-step-row {
    grid-template-columns: 1fr;
    gap: 16px;
    padding: 28px 0;
  }
  .footer-columns-grid {
    grid-template-columns: 1fr 1fr;
    gap: 36px;
  }
}

@media (max-width: 640px) {
  .hero-display-title {
    font-size: clamp(2.6rem, 11vw, 4.2rem);
  }
  .editorial-pillar-row {
    grid-template-columns: 1fr;
    gap: 12px;
  }
  .pillar-num {
    font-size: 2.2rem;
  }
  .footer-columns-grid {
    grid-template-columns: 1fr;
  }
  .footer-copyright-row {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    transition-duration: 0.001ms !important;
  }
}