/* ============================================================
   OASIS — Semiconductor Equipment Engineering
   Main Stylesheet
   ============================================================ */

/* ---------- CSS Variables ---------- */
:root {
  --bg-0: #050807;
  --bg-1: #07110D;
  --bg-2: #0B1A13;
  --bg-3: #101713;
  --bg-card: #0d1a11;
  --bg-card-hover: #132018;

  --accent: #10B981;
  --accent-bright: #34D399;
  --accent-dim: rgba(16, 185, 129, 0.25);
  --accent-faint: rgba(16, 185, 129, 0.08);
  --accent-border: rgba(16, 185, 129, 0.2);
  --accent-border-hover: rgba(16, 185, 129, 0.5);

  --text-primary: #F1F5F9;
  --text-secondary: #94A3B8;
  --text-muted: #4B6358;
  --text-accent: #6EE7B7;

  --border-subtle: rgba(255, 255, 255, 0.06);
  --border-card: rgba(255, 255, 255, 0.05);

  --font-sans: 'Pretendard Variable', Pretendard, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-display: 'Space Grotesk', sans-serif;

  --max-w: 1280px;
  --header-h: 72px;

  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in-out: cubic-bezier(0.45, 0, 0.55, 1);
}

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

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

body {
  background-color: var(--bg-0);
  color: var(--text-primary);
  font-family: var(--font-sans);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
  word-break: keep-all;
  overflow-wrap: break-word;
}

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

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

ul, ol { list-style: none; }

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

address { font-style: normal; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
  html { scroll-behavior: auto; }
}

/* ---------- Container ---------- */
.container {
  width: 100%;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 48px;
}

.section-padding { padding: 120px 0; }

/* ---------- Eyebrow / Labels ---------- */
.eyebrow-label {
  display: inline-block;
  font-family: var(--font-display);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.2em;
  color: var(--accent);
  text-transform: uppercase;
  margin-bottom: 20px;
}

/* ---------- Section Headers ---------- */
.section-header {
  max-width: 720px;
  margin-bottom: 72px;
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(28px, 3.5vw, 48px);
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--text-primary);
  margin-bottom: 20px;
  word-break: keep-all;
  overflow-wrap: break-word;
}

.section-desc {
  font-size: 15px;
  line-height: 1.8;
  color: var(--text-secondary);
  word-break: keep-all;
  overflow-wrap: break-word;
}

.section-cta {
  margin-top: 56px;
  text-align: center;
}

/* ---------- Buttons ---------- */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  background: var(--accent);
  color: #040a07;
  font-family: var(--font-display);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.02em;
  border-radius: 2px;
  transition: background 0.25s, transform 0.2s;
}

.btn-primary:hover {
  background: var(--accent-bright);
  transform: translateY(-1px);
}

.btn-primary:focus-visible {
  outline: 2px solid var(--accent-bright);
  outline-offset: 3px;
}

.btn-outline {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 32px;
  border: 1px solid var(--accent-border-hover);
  color: var(--text-accent);
  font-family: var(--font-display);
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.02em;
  border-radius: 2px;
  transition: border-color 0.25s, background 0.25s, color 0.25s, transform 0.2s;
}

.btn-outline:hover {
  border-color: var(--accent);
  background: var(--accent-faint);
  color: var(--accent-bright);
  transform: translateY(-1px);
}

.btn-outline:focus-visible {
  outline: 2px solid var(--accent-bright);
  outline-offset: 3px;
}

.btn-lg { padding: 16px 40px; font-size: 15px; }

/* ---------- Reveal Animations ---------- */
.reveal-item {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.7s var(--ease-out), transform 0.7s var(--ease-out);
}

.reveal-item.revealed {
  opacity: 1;
  transform: translateY(0);
}

.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }


/* ============================================================
   HEADER
   ============================================================ */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--header-h);
  transition: background 0.4s var(--ease-out), backdrop-filter 0.4s, border-color 0.4s;
  border-bottom: 1px solid transparent;
}

.header.scrolled {
  background: rgba(5, 8, 7, 0.88);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom-color: var(--border-subtle);
}

.header-inner {
  display: flex;
  align-items: center;
  height: var(--header-h);
  gap: 0;
}

.logo {
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--text-primary);
  flex-shrink: 0;
  transition: color 0.2s;
}

.logo:hover { color: var(--accent-bright); }

.logo-mark {
  color: var(--accent);
}

.nav-desktop {
  margin-left: auto;
  margin-right: auto;
}

.nav-desktop ul {
  display: flex;
  align-items: center;
  gap: 2px;
}

.nav-desktop a {
  display: block;
  padding: 8px 16px;
  font-family: var(--font-display);
  font-size: 13.5px;
  font-weight: 500;
  letter-spacing: 0.03em;
  color: var(--text-secondary);
  transition: color 0.2s;
  border-radius: 2px;
}

.nav-desktop a:hover { color: var(--text-primary); }
.nav-desktop a:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

.header-right {
  display: flex;
  align-items: center;
  gap: 20px;
  flex-shrink: 0;
}

.lang-switch {
  display: flex;
  align-items: center;
  gap: 4px;
}

.lang-btn {
  font-family: var(--font-display);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  padding: 4px 2px;
  transition: color 0.2s;
}

.lang-btn.active { color: var(--text-primary); }
.lang-btn:hover { color: var(--text-secondary); }
.lang-btn:focus-visible { outline: 1px solid var(--accent); outline-offset: 2px; }

.lang-sep { color: var(--text-muted); font-size: 11px; }

.btn-contact-us {
  display: inline-flex;
  align-items: center;
  padding: 9px 22px;
  border: 1px solid var(--accent-border);
  color: var(--text-accent);
  font-family: var(--font-display);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.04em;
  border-radius: 2px;
  transition: border-color 0.2s, background 0.2s, color 0.2s;
}

.btn-contact-us:hover {
  border-color: var(--accent);
  background: var(--accent-faint);
  color: var(--accent-bright);
}

.btn-contact-us:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  padding: 6px;
  margin-left: auto;
}

.hamburger span {
  display: block;
  width: 22px;
  height: 1.5px;
  background: var(--text-primary);
  transition: transform 0.3s, opacity 0.3s;
  border-radius: 1px;
}

.hamburger.open span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.hamburger.open span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

/* Mobile Menu */
.mobile-menu {
  position: fixed;
  inset: 0;
  z-index: 200;
  background: var(--bg-1);
  transform: translateX(100%);
  transition: transform 0.4s var(--ease-out);
  display: flex;
  flex-direction: column;
}

.mobile-menu.open {
  transform: translateX(0);
}

.mobile-menu-inner {
  display: flex;
  flex-direction: column;
  height: 100%;
  padding: 24px 32px 40px;
}

.mobile-close {
  align-self: flex-end;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  border-radius: 2px;
  transition: color 0.2s;
  margin-bottom: 48px;
}

.mobile-close:hover { color: var(--text-primary); }
.mobile-close:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

.mobile-menu nav ul {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.mobile-nav-link {
  display: block;
  padding: 18px 0;
  font-family: var(--font-display);
  font-size: 28px;
  font-weight: 600;
  color: var(--text-secondary);
  border-bottom: 1px solid var(--border-subtle);
  transition: color 0.2s, padding-left 0.2s;
}

.mobile-nav-link:hover { color: var(--text-primary); padding-left: 8px; }
.mobile-nav-link:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

.mobile-footer-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: auto;
  padding-top: 32px;
}

.mobile-overlay {
  position: fixed;
  inset: 0;
  z-index: 150;
  background: rgba(0,0,0,0.5);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s;
}

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


/* ============================================================
   HERO
   ============================================================ */
.hero-section {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  padding-top: var(--header-h);
}

/* Circuit Canvas Background */
.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero-circuit-canvas {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(135deg, var(--bg-0) 0%, var(--bg-1) 40%, #071510 100%),
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='300' height='300'%3E%3Cdefs%3E%3Cpattern id='circuit' x='0' y='0' width='300' height='300' patternUnits='userSpaceOnUse'%3E%3Cpath stroke='rgba(16,185,129,0.06)' stroke-width='0.8' fill='none' d='M0 75 H90 V0 M210 300 V210 H300 M0 225 H60 V300 M300 75 H240 V0 M150 0 V60 H90 M150 300 V240 H210'/%3E%3Cpath stroke='rgba(16,185,129,0.04)' stroke-width='0.5' fill='none' d='M0 150 H120 V90 M300 150 H180 V210'/%3E%3Ccircle cx='90' cy='75' r='3' fill='rgba(16,185,129,0.1)'/%3E%3Ccircle cx='210' cy='210' r='3' fill='rgba(16,185,129,0.1)'/%3E%3Ccircle cx='60' cy='225' r='3' fill='rgba(16,185,129,0.08)'/%3E%3Ccircle cx='240' cy='75' r='3' fill='rgba(16,185,129,0.08)'/%3E%3Ccircle cx='150' cy='60' r='2.5' fill='rgba(16,185,129,0.1)'/%3E%3Ccircle cx='150' cy='240' r='2.5' fill='rgba(16,185,129,0.08)'/%3E%3Cpath stroke='rgba(16,185,129,0.03)' stroke-width='0.4' fill='none' d='M0 0 H300 M0 30 H300 M0 60 H300 M0 90 H300 M0 120 H300 M0 150 H300 M0 180 H300 M0 210 H300 M0 240 H300 M0 270 H300 M0 300 H300'/%3E%3Cpath stroke='rgba(16,185,129,0.03)' stroke-width='0.4' fill='none' d='M0 0 V300 M30 0 V300 M60 0 V300 M90 0 V300 M120 0 V300 M150 0 V300 M180 0 V300 M210 0 V300 M240 0 V300 M270 0 V300 M300 0 V300'/%3E%3C/pattern%3E%3C/defs%3E%3Crect width='300' height='300' fill='url(%23circuit)'/%3E%3C/svg%3E") center/300px 300px;
}

.hero-wafer {
  position: absolute;
  right: -10%;
  top: 50%;
  transform: translateY(-50%);
  width: 700px;
  height: 700px;
  border-radius: 50%;
  background:
    radial-gradient(circle at center, transparent 20%, rgba(16,185,129,0.03) 40%, transparent 60%),
    radial-gradient(circle at center, transparent 30%, rgba(16,185,129,0.02) 50%, transparent 70%),
    radial-gradient(circle at center, transparent 42%, rgba(16,185,129,0.025) 58%, transparent 75%);
  border: 1px solid rgba(16, 185, 129, 0.06);
  box-shadow:
    inset 0 0 120px rgba(16,185,129,0.04),
    0 0 200px rgba(16,185,129,0.05);
  overflow: hidden;
}

.hero-wafer::before {
  content: '';
  position: absolute;
  inset: 5%;
  border-radius: 50%;
  border: 1px solid rgba(16,185,129,0.05);
  background:
    repeating-radial-gradient(circle at center, transparent 0, transparent 22px, rgba(16,185,129,0.025) 23px, transparent 24px);
}

.hero-wafer::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: 50%;
  background: linear-gradient(135deg, transparent 30%, rgba(16,185,129,0.04) 60%, transparent 90%);
  animation: waferRotate 40s linear infinite;
}

@keyframes waferRotate {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    105deg,
    rgba(5,8,7,0.92) 0%,
    rgba(5,8,7,0.82) 40%,
    rgba(5,8,7,0.5) 70%,
    rgba(5,8,7,0.3) 100%
  );
}

.hero-content {
  position: relative;
  z-index: 1;
  padding-top: 80px;
  padding-bottom: 120px;
  display: flex;
  flex-direction: column;
  gap: 48px;
}

.hero-text { max-width: 680px; }

.hero-headline {
  font-family: var(--font-display);
  font-size: clamp(36px, 5.5vw, 76px);
  font-weight: 700;
  line-height: 1.08;
  letter-spacing: -0.03em;
  color: var(--text-primary);
  margin-bottom: 24px;
  word-break: keep-all;
  overflow-wrap: break-word;
}

.hero-subheadline {
  font-size: clamp(16px, 1.5vw, 20px);
  font-weight: 400;
  color: var(--text-accent);
  margin-bottom: 20px;
  letter-spacing: 0.01em;
  word-break: keep-all;
  overflow-wrap: break-word;
}

.hero-body {
  font-size: 15px;
  line-height: 1.85;
  color: var(--text-secondary);
  margin-bottom: 12px;
  word-break: keep-all;
  overflow-wrap: break-word;
}

.hero-secondary {
  font-size: 14px;
  line-height: 1.85;
  color: var(--text-muted);
  margin-bottom: 36px;
}

.hero-ctas {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.hero-badges {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  background: rgba(16, 185, 129, 0.06);
  border: 1px solid rgba(16, 185, 129, 0.15);
  border-radius: 2px;
  font-family: var(--font-display);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--text-secondary);
}

.badge-dot {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--accent);
  flex-shrink: 0;
}

.hero-scroll-hint {
  position: absolute;
  bottom: 48px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  color: var(--text-muted);
  font-family: var(--font-display);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.scroll-line {
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, var(--accent-dim), transparent);
  animation: scrollPulse 2s ease-in-out infinite;
}

@keyframes scrollPulse {
  0%, 100% { opacity: 0.4; transform: scaleY(1); }
  50% { opacity: 1; transform: scaleY(1.1); }
}


/* ============================================================
   BUSINESS
   ============================================================ */
.business-section { background: var(--bg-1); }

.business-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  border: 1px solid var(--border-card);
  background: var(--border-card);
}

.business-card {
  background: var(--bg-card);
  display: flex;
  flex-direction: column;
  transition: background 0.35s;
  overflow: hidden;
}

.business-card:hover { background: var(--bg-card-hover); }

.biz-card-visual {
  height: 200px;
  position: relative;
  overflow: hidden;
  background: var(--bg-2);
  border-bottom: 1px solid var(--border-card);
}

.biz-visual-inner {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.5s var(--ease-out);
}

.business-card:hover .biz-visual-inner { transform: scale(1.04); }

/* PBIC Visual */
.pbic-visual {
  background: radial-gradient(ellipse at 30% 70%, rgba(16,185,129,0.08) 0%, transparent 60%), var(--bg-2);
}

.pbic-diagram {
  position: relative;
  width: 160px;
  height: 120px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.pbic-node {
  position: absolute;
  border-radius: 50%;
  border: 1.5px solid var(--accent-border);
}

.pbic-node.main {
  width: 48px;
  height: 48px;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background: rgba(16,185,129,0.08);
  border-color: rgba(16,185,129,0.4);
  box-shadow: 0 0 20px rgba(16,185,129,0.15);
}

.pbic-node.sub {
  width: 24px;
  height: 24px;
  background: rgba(16,185,129,0.05);
}

.pbic-node.sub:nth-of-type(2) { top: 10%; left: 10%; }
.pbic-node.sub:nth-of-type(4) { bottom: 10%; right: 10%; }

.pbic-line {
  position: absolute;
  background: rgba(16,185,129,0.2);
}

.pbic-line.h { height: 1px; width: 60%; top: 50%; left: 20%; }
.pbic-line.v { width: 1px; height: 60%; left: 50%; top: 20%; }

.pbic-pulse {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 72px;
  height: 72px;
  border-radius: 50%;
  border: 1px solid rgba(16,185,129,0.3);
  animation: pulsing 2.5s ease-out infinite;
}

@keyframes pulsing {
  0% { transform: translate(-50%, -50%) scale(0.8); opacity: 0.8; }
  100% { transform: translate(-50%, -50%) scale(1.8); opacity: 0; }
}

/* Modify Visual */
.modify-visual {
  background: radial-gradient(ellipse at 70% 30%, rgba(16,185,129,0.06) 0%, transparent 60%), var(--bg-2);
}

.modify-diagram {
  display: flex;
  align-items: flex-end;
  gap: 10px;
  padding-bottom: 20px;
  position: relative;
}

.mod-bar {
  width: 22px;
  background: rgba(16,185,129,0.15);
  border: 1px solid rgba(16,185,129,0.2);
  border-radius: 2px 2px 0 0;
  transition: height 0.5s var(--ease-out);
}

.mod-bar.active {
  background: rgba(16,185,129,0.3);
  border-color: rgba(16,185,129,0.5);
}

.mod-arrow {
  position: absolute;
  top: 0;
  right: -4px;
  color: var(--accent);
  font-size: 20px;
  opacity: 0.6;
}

/* PCB Visual */
.pcb-visual {
  background: linear-gradient(135deg, #060e09 0%, #0b1810 100%);
}

.pcb-grid {
  position: relative;
  width: 140px;
  height: 100px;
}

.pcb-trace {
  position: absolute;
  background: rgba(16,185,129,0.4);
}

.pcb-trace.h { height: 1.5px; }
.pcb-trace.v { width: 1.5px; }

.pcb-pad {
  position: absolute;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: rgba(16,185,129,0.6);
  border: 1px solid rgba(16,185,129,0.8);
  transform: translate(-50%, -50%);
}

.pcb-ic {
  position: absolute;
  top: 30%;
  left: 30%;
  width: 35px;
  height: 30px;
  background: rgba(16,185,129,0.08);
  border: 1.5px solid rgba(16,185,129,0.35);
  border-radius: 2px;
}

/* Parts Visual */
.parts-visual {
  background: radial-gradient(ellipse at 50% 50%, rgba(16,185,129,0.06) 0%, transparent 70%), var(--bg-2);
}

.parts-diagram {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.part-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
}

.part-icon {
  font-size: 22px;
  color: rgba(16,185,129,0.5);
  line-height: 1;
}

.part-item span {
  font-family: var(--font-display);
  font-size: 10px;
  letter-spacing: 0.06em;
  color: var(--text-muted);
  text-transform: uppercase;
}

/* Card Content */
.biz-card-content {
  padding: 28px 28px 32px;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.biz-card-num {
  font-family: var(--font-display);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.15em;
  color: var(--accent);
  margin-bottom: 14px;
}

.biz-card-title {
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--text-primary);
  margin-bottom: 12px;
}

.biz-card-desc {
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--text-secondary);
  margin-bottom: 20px;
  flex: 1;
}

.biz-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 24px;
}

.biz-tag {
  display: inline-block;
  padding: 3px 10px;
  font-family: var(--font-display);
  font-size: 10.5px;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  border: 1px solid var(--border-subtle);
  border-radius: 1px;
  transition: border-color 0.2s, color 0.2s;
}

.business-card:hover .biz-tag {
  border-color: var(--accent-border);
  color: var(--text-secondary);
}

.biz-cta {
  font-family: var(--font-display);
  font-size: 13px;
  font-weight: 500;
  color: var(--accent);
  letter-spacing: 0.03em;
  transition: color 0.2s, gap 0.2s;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.biz-cta:hover { color: var(--accent-bright); gap: 10px; }
.biz-cta:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }


/* ============================================================
   PBIC TECHNOLOGY
   ============================================================ */
.pbic-section { background: var(--bg-0); }

.pbic-tabs-wrapper {
  border: 1px solid var(--border-card);
  border-radius: 2px;
  overflow: hidden;
}

.pbic-tabs {
  display: flex;
  background: var(--bg-2);
  border-bottom: 1px solid var(--border-card);
  overflow-x: auto;
  scrollbar-width: none;
}

.pbic-tabs::-webkit-scrollbar { display: none; }

.pbic-tab {
  flex: 1;
  min-width: 160px;
  padding: 18px 24px;
  font-family: var(--font-display);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.03em;
  color: var(--text-muted);
  border-right: 1px solid var(--border-card);
  border-bottom: 2px solid transparent;
  transition: color 0.25s, border-color 0.25s, background 0.25s;
  text-align: left;
  white-space: nowrap;
}

.pbic-tab:last-child { border-right: none; }

.pbic-tab:hover { color: var(--text-secondary); background: var(--bg-3); }

.pbic-tab.active {
  color: var(--text-primary);
  border-bottom-color: var(--accent);
  background: var(--bg-3);
}

.pbic-tab:focus-visible { outline: 2px solid var(--accent); outline-offset: -2px; }

.pbic-panels { background: var(--bg-card); }

.pbic-panel {
  display: none;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  align-items: stretch;
  min-height: 360px;
}

.pbic-panel.active { display: grid; }

.pbic-panel-visual {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 48px;
  background: var(--bg-2);
  border-right: 1px solid var(--border-card);
}

/* Sequence Diagram */
.sequence-diagram {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 4px;
}

.seq-step {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 8px 16px;
  border: 1px solid var(--border-subtle);
  border-radius: 2px;
  background: rgba(255,255,255,0.02);
  min-width: 200px;
  transition: all 0.2s;
}

.seq-step.active {
  border-color: var(--accent-border-hover);
  background: var(--accent-faint);
}

.seq-num {
  font-family: var(--font-display);
  font-size: 10px;
  font-weight: 600;
  color: var(--accent);
  letter-spacing: 0.1em;
}

.seq-label {
  font-family: var(--font-display);
  font-size: 12px;
  color: var(--text-secondary);
}

.seq-arrow {
  font-size: 12px;
  color: rgba(16,185,129,0.3);
  padding-left: 20px;
}

/* Pumping Diagram */
.pumping-diagram { width: 280px; }
.pumping-diagram svg { width: 100%; height: auto; }

/* Fail-safe Diagram */
.failsafe-diagram {
  display: flex;
  flex-direction: column;
  gap: 8px;
  align-items: flex-start;
}

.fault-item, .fault-action {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-display);
  font-size: 12.5px;
  color: var(--text-secondary);
}

.fault-icon {
  width: 22px;
  height: 22px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  font-size: 11px;
  font-weight: 700;
  flex-shrink: 0;
}

.fault-icon.warn { background: rgba(234,179,8,0.15); color: #EAB308; border: 1px solid rgba(234,179,8,0.3); }
.fault-icon.ok { background: rgba(16,185,129,0.12); color: var(--accent); border: 1px solid var(--accent-border); }

.fault-arrow {
  font-size: 18px;
  color: rgba(16,185,129,0.3);
  padding-left: 6px;
}

.fault-action { color: var(--text-accent); }

/* Data Log Diagram */
.datalog-diagram {
  display: flex;
  flex-direction: column;
  gap: 6px;
  width: 300px;
  font-family: var(--font-display);
  font-size: 11px;
}

.log-row {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 6px 10px;
  background: rgba(255,255,255,0.02);
  border-left: 2px solid transparent;
}

.log-row:not(.muted) { border-left-color: var(--accent-border); }
.log-row.muted { opacity: 0.5; }

.log-type {
  padding: 2px 6px;
  border-radius: 1px;
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.06em;
  flex-shrink: 0;
}

.log-type.alarm { background: rgba(239,68,68,0.15); color: #F87171; }
.log-type.op { background: rgba(16,185,129,0.1); color: var(--accent); }
.log-type.ok { background: rgba(16,185,129,0.15); color: var(--accent-bright); }

.log-msg { flex: 1; color: var(--text-secondary); }
.log-time { color: var(--text-muted); font-size: 9.5px; flex-shrink: 0; }

.pbic-panel-text {
  padding: 48px 48px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.pbic-panel-title {
  font-family: var(--font-display);
  font-size: 24px;
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--text-primary);
  margin-bottom: 16px;
}

.pbic-panel-desc {
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--text-secondary);
  margin-bottom: 28px;
}

.pbic-points {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.pbic-points li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-display);
  font-size: 13px;
  color: var(--text-secondary);
}

.point-dot {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--accent);
  flex-shrink: 0;
}


/* ============================================================
   AT A GLANCE
   ============================================================ */
.glance-section {
  position: relative;
  background: var(--bg-1);
}

.glance-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 50% 0%, rgba(16,185,129,0.06) 0%, transparent 60%),
    radial-gradient(ellipse at 50% 100%, rgba(16,185,129,0.04) 0%, transparent 50%);
  pointer-events: none;
}

.glance-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--border-card);
  border: 1px solid var(--border-card);
}

.glance-stat {
  background: var(--bg-card);
  padding: 48px 40px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  transition: background 0.3s;
}

.glance-stat:hover { background: var(--bg-card-hover); }

.stat-value {
  font-family: var(--font-display);
  font-size: clamp(36px, 4vw, 56px);
  font-weight: 700;
  letter-spacing: -0.03em;
  color: var(--text-primary);
  line-height: 1;
}

.stat-value-sm {
  font-size: clamp(24px, 2.8vw, 38px);
}

.stat-label {
  font-family: var(--font-display);
  font-size: 12px;
  font-weight: 400;
  letter-spacing: 0.06em;
  color: var(--text-muted);
  text-transform: uppercase;
}

.stat-value .counting { color: var(--accent); }


/* ============================================================
   LIFECYCLE
   ============================================================ */
.lifecycle-section { background: var(--bg-0); }

.lifecycle-layout {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 0;
  border: 1px solid var(--border-card);
  border-radius: 2px;
  overflow: hidden;
  min-height: 420px;
}

.lifecycle-steps {
  background: var(--bg-2);
  border-right: 1px solid var(--border-card);
  display: flex;
  flex-direction: column;
}

.lc-step {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 20px 24px;
  border-bottom: 1px solid var(--border-card);
  text-align: left;
  position: relative;
  overflow: hidden;
  transition: background 0.25s;
}

.lc-step:last-child { border-bottom: none; }
.lc-step:hover { background: var(--bg-3); }

.lc-step.active { background: var(--bg-3); }

.lc-step-num {
  font-family: var(--font-display);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.12em;
  color: var(--text-muted);
  flex-shrink: 0;
  transition: color 0.25s;
}

.lc-step.active .lc-step-num { color: var(--accent); }

.lc-step-name {
  font-family: var(--font-display);
  font-size: 14px;
  font-weight: 500;
  color: var(--text-secondary);
  transition: color 0.25s;
}

.lc-step.active .lc-step-name { color: var(--text-primary); }

.lc-step-bar {
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--accent);
  transform: scaleY(0);
  transition: transform 0.3s var(--ease-out);
  transform-origin: top;
}

.lc-step.active .lc-step-bar { transform: scaleY(1); }
.lc-step:focus-visible { outline: 2px solid var(--accent); outline-offset: -2px; }

.lifecycle-panel-area { background: var(--bg-card); }

.lc-panel {
  display: none;
  flex-direction: column;
  justify-content: center;
  padding: 56px 60px;
  height: 100%;
  animation: lcFadeIn 0.4s var(--ease-out);
}

@keyframes lcFadeIn {
  from { opacity: 0; transform: translateX(12px); }
  to { opacity: 1; transform: translateX(0); }
}

.lc-panel.active { display: flex; }

.lc-panel-eyebrow {
  font-family: var(--font-display);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--accent);
  margin-bottom: 16px;
}

.lc-panel-title {
  font-family: var(--font-display);
  font-size: 32px;
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--text-primary);
  margin-bottom: 18px;
}

.lc-panel-desc {
  font-size: 15px;
  line-height: 1.8;
  color: var(--text-secondary);
  max-width: 520px;
  margin-bottom: 32px;
}

.lc-panel-icon {
  width: 80px;
  height: 80px;
}

.lc-panel-icon svg { width: 100%; height: 100%; }


/* ============================================================
   SYSTEM ARCHITECTURE
   ============================================================ */
.system-section { background: var(--bg-1); }

.system-diagram {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 0;
  border: 1px solid var(--border-card);
  margin-bottom: 48px;
  border-radius: 2px;
  overflow: hidden;
}

.sys-block {
  background: var(--bg-card);
  padding: 36px 32px;
}

.sys-block.sub-fab { background: rgba(16,185,129,0.03); }

.sys-block-label {
  font-family: var(--font-display);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.18em;
  color: var(--accent);
  text-transform: uppercase;
  margin-bottom: 20px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--accent-border);
}

.sys-items { display: flex; flex-direction: column; gap: 10px; }

.sys-item {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-display);
  font-size: 13px;
  color: var(--text-secondary);
}

.sys-item.highlight { color: var(--text-primary); font-weight: 500; }

.sys-dot {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--border-card);
  border: 1px solid var(--text-muted);
  flex-shrink: 0;
}

.sys-dot.accent { background: var(--accent); border-color: var(--accent); box-shadow: 0 0 6px rgba(16,185,129,0.4); }

.sys-signal-col {
  background: var(--bg-2);
  padding: 36px 24px;
  border-left: 1px solid var(--border-card);
  border-right: 1px solid var(--border-card);
  display: flex;
  flex-direction: column;
  align-items: center;
  min-width: 180px;
}

.sys-signal-label {
  font-family: var(--font-display);
  font-size: 10px;
  letter-spacing: 0.14em;
  color: var(--text-muted);
  text-transform: uppercase;
  margin-bottom: 24px;
}

.sys-signals { display: flex; flex-direction: column; gap: 12px; width: 100%; }

.sys-signal {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-display);
  font-size: 11.5px;
  color: var(--text-secondary);
}

.signal-line {
  flex: 1;
  height: 1px;
  background: rgba(16,185,129,0.25);
  position: relative;
}

.signal-line::after {
  content: '→';
  position: absolute;
  right: -8px;
  top: -8px;
  font-size: 10px;
  color: rgba(16,185,129,0.4);
}

.signal-line.warn { background: rgba(234,179,8,0.3); }
.signal-line.warn::after { color: rgba(234,179,8,0.5); }

.system-cards {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--border-card);
  border: 1px solid var(--border-card);
  margin-bottom: 0;
}

.sys-card {
  background: var(--bg-card);
  padding: 28px 24px;
  transition: background 0.3s;
}

.sys-card:hover { background: var(--bg-card-hover); }

.sys-card-icon {
  font-size: 20px;
  color: rgba(16,185,129,0.4);
  margin-bottom: 14px;
}

.sys-card-title {
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 10px;
}

.sys-card-desc {
  font-size: 13px;
  line-height: 1.7;
  color: var(--text-secondary);
}


/* ============================================================
   PARTNERS
   ============================================================ */
.partners-section { background: var(--bg-0); }

.partners-notice {
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 12px;
}

.partners-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--border-card);
  border: 1px solid var(--border-card);
}

.partner-group {
  background: var(--bg-card);
  padding: 36px 32px;
}

.partner-group-title {
  font-family: var(--font-display);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.14em;
  color: var(--accent);
  text-transform: uppercase;
  margin-bottom: 24px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--accent-border);
}

.partner-logos {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.partner-logo-item {
  padding: 7px 14px;
  border: 1px solid var(--border-subtle);
  border-radius: 2px;
  font-family: var(--font-display);
  font-size: 12px;
  font-weight: 500;
  color: var(--text-secondary);
  letter-spacing: 0.04em;
  transition: border-color 0.25s, color 0.25s, background 0.25s;
}

.partner-logo-item:hover {
  border-color: var(--accent-border);
  color: var(--text-primary);
  background: var(--accent-faint);
}

.project-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.project-list li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 13px;
  color: var(--text-secondary);
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border-subtle);
}

.project-list li::before {
  content: '—';
  color: var(--accent);
  flex-shrink: 0;
  font-family: var(--font-display);
  font-size: 11px;
  margin-top: 2px;
}

.project-list li:last-child { border-bottom: none; padding-bottom: 0; }


/* ============================================================
   QUALITY
   ============================================================ */
.quality-section { background: var(--bg-1); }

.quality-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--border-card);
  border: 1px solid var(--border-card);
}

.quality-card {
  background: var(--bg-card);
  padding: 44px 40px;
  position: relative;
  overflow: hidden;
  transition: background 0.3s;
}

.quality-card:hover { background: var(--bg-card-hover); }

.quality-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--accent), transparent);
  opacity: 0;
  transition: opacity 0.3s;
}

.quality-card:hover::before { opacity: 1; }

.quality-card-num {
  font-family: var(--font-display);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.15em;
  color: var(--accent);
  margin-bottom: 16px;
}

.quality-card-title {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--text-primary);
  margin-bottom: 14px;
}

.quality-card-desc {
  font-size: 14px;
  line-height: 1.8;
  color: var(--text-secondary);
}


/* ============================================================
   NEWSROOM
   ============================================================ */
.news-section { background: var(--bg-0); }

.news-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 32px;
  margin-bottom: 40px;
}

.news-header .section-title { margin-bottom: 12px; }

.news-more-btn { align-self: flex-end; white-space: nowrap; flex-shrink: 0; }

.news-tabs {
  display: flex;
  gap: 0;
  border-bottom: 1px solid var(--border-card);
  margin-bottom: 40px;
  overflow-x: auto;
  scrollbar-width: none;
}

.news-tabs::-webkit-scrollbar { display: none; }

.news-tab {
  padding: 12px 20px;
  font-family: var(--font-display);
  font-size: 13px;
  font-weight: 500;
  color: var(--text-muted);
  border-bottom: 2px solid transparent;
  transition: color 0.25s, border-color 0.25s;
  white-space: nowrap;
  margin-bottom: -1px;
}

.news-tab:hover { color: var(--text-secondary); }

.news-tab.active {
  color: var(--text-primary);
  border-bottom-color: var(--accent);
}

.news-tab:focus-visible { outline: 2px solid var(--accent); outline-offset: -2px; }

.news-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--border-card);
  border: 1px solid var(--border-card);
}

.news-card {
  background: var(--bg-card);
  padding: 32px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  transition: background 0.3s;
}

.news-card:hover { background: var(--bg-card-hover); }

.news-card.hidden { display: none; }

.news-card-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.news-category {
  display: inline-block;
  padding: 3px 10px;
  background: var(--accent-faint);
  border: 1px solid var(--accent-border);
  border-radius: 1px;
  font-family: var(--font-display);
  font-size: 10.5px;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--accent);
}

.news-date {
  font-family: var(--font-display);
  font-size: 11px;
  letter-spacing: 0.04em;
  color: var(--text-muted);
}

.news-card-title {
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 600;
  line-height: 1.4;
  letter-spacing: -0.01em;
  color: var(--text-primary);
}

.news-card-summary {
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--text-secondary);
  flex: 1;
}

.news-card-link {
  font-family: var(--font-display);
  font-size: 12.5px;
  font-weight: 500;
  color: var(--accent);
  transition: color 0.2s;
  align-self: flex-start;
}

.news-card-link:hover { color: var(--accent-bright); }
.news-card-link:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }


/* ============================================================
   CONTACT CTA
   ============================================================ */
.contact-section {
  position: relative;
  background: var(--bg-1);
  text-align: center;
}

.contact-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 30% 50%, rgba(16,185,129,0.07) 0%, transparent 55%),
    radial-gradient(ellipse at 70% 50%, rgba(16,185,129,0.05) 0%, transparent 55%),
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='200' height='200'%3E%3Cpath stroke='rgba(16,185,129,0.04)' stroke-width='0.5' fill='none' d='M0 100 H200 M100 0 V200'/%3E%3Ccircle cx='100' cy='100' r='60' fill='none' stroke='rgba(16,185,129,0.04)' stroke-width='0.5'/%3E%3Ccircle cx='100' cy='100' r='90' fill='none' stroke='rgba(16,185,129,0.03)' stroke-width='0.5'/%3E%3C/svg%3E") center/400px 400px;
  pointer-events: none;
}

.contact-inner {
  position: relative;
  z-index: 1;
  max-width: 680px;
  margin: 0 auto;
}

.contact-title { text-align: center; margin: 0 auto 20px; }

.contact-desc { margin-bottom: 40px; text-align: center; }

.contact-ctas {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 40px;
}

.contact-options {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
}

.contact-option {
  padding: 8px 16px;
  border: 1px solid var(--border-subtle);
  border-radius: 2px;
  font-family: var(--font-display);
  font-size: 12px;
  font-weight: 500;
  color: var(--text-muted);
  letter-spacing: 0.04em;
  transition: border-color 0.2s, color 0.2s, background 0.2s;
}

.contact-option:hover {
  border-color: var(--accent-border);
  color: var(--text-secondary);
  background: var(--accent-faint);
}

.contact-option:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }


/* ============================================================
   FOOTER
   ============================================================ */
.footer {
  background: var(--bg-0);
  border-top: 1px solid var(--border-subtle);
  padding: 72px 0 40px;
}

.footer-top {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 80px;
  align-items: start;
  margin-bottom: 56px;
  padding-bottom: 56px;
  border-bottom: 1px solid var(--border-subtle);
}

.footer-logo {
  display: inline-block;
  margin-bottom: 20px;
}

.footer-tagline {
  font-size: 13.5px;
  line-height: 1.8;
  color: var(--text-muted);
  max-width: 340px;
}

.footer-nav ul {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer-nav a {
  font-family: var(--font-display);
  font-size: 13px;
  font-weight: 500;
  color: var(--text-secondary);
  transition: color 0.2s;
}

.footer-nav a:hover { color: var(--text-primary); }
.footer-nav a:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

.nav-desktop a.active,
.footer-nav a.active,
.mobile-nav-link.active {
  color: var(--accent-bright);
}

/* ============================================================
   DETAIL PAGES
   ============================================================ */
.detail-hero {
  position: relative;
  min-height: 620px;
  padding-top: calc(var(--header-h) + 120px);
  padding-bottom: 96px;
  display: flex;
  align-items: center;
  overflow: hidden;
  background:
    radial-gradient(circle at 78% 28%, rgba(16, 185, 129, 0.18), transparent 34%),
    linear-gradient(135deg, rgba(5, 8, 7, 0.96), rgba(7, 17, 13, 0.94));
}

.detail-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(16, 185, 129, 0.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(16, 185, 129, 0.08) 1px, transparent 1px);
  background-size: 72px 72px;
  mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.9), transparent);
  pointer-events: none;
}

.detail-hero::after {
  content: "";
  position: absolute;
  right: clamp(24px, 10vw, 160px);
  top: 24%;
  width: clamp(220px, 30vw, 420px);
  aspect-ratio: 1;
  border: 1px solid var(--accent-border);
  background:
    linear-gradient(90deg, transparent 49%, rgba(16, 185, 129, 0.22) 50%, transparent 51%),
    linear-gradient(transparent 49%, rgba(16, 185, 129, 0.22) 50%, transparent 51%),
    radial-gradient(circle, rgba(16, 185, 129, 0.18), transparent 58%);
  opacity: 0.8;
  transform: rotate(10deg);
}

.detail-hero-inner {
  position: relative;
  z-index: 1;
  max-width: 840px;
}

.detail-title {
  font-family: var(--font-display);
  font-size: clamp(40px, 6vw, 76px);
  font-weight: 600;
  line-height: 1.08;
  color: var(--text-primary);
  margin-bottom: 28px;
  word-break: keep-all;
  overflow-wrap: break-word;
}

.detail-lead {
  max-width: 760px;
  color: var(--text-secondary);
  font-size: clamp(16px, 2vw, 20px);
  line-height: 1.85;
  word-break: keep-all;
  overflow-wrap: break-word;
}

.detail-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  margin-top: 40px;
}

.detail-section {
  padding: 112px 0;
  background: var(--bg-0);
}

.detail-band {
  background: var(--bg-1);
  border-top: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
}

.detail-two-col {
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
  gap: 72px;
  align-items: start;
}

.detail-copy {
  color: var(--text-secondary);
  font-size: 16px;
}

.detail-copy p + p {
  margin-top: 18px;
}

.detail-grid-3 {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 22px;
}

.detail-card {
  min-height: 260px;
  padding: 32px;
  border: 1px solid var(--border-card);
  background: linear-gradient(180deg, rgba(13, 26, 17, 0.92), rgba(8, 16, 12, 0.92));
  border-radius: 8px;
}

.detail-card-num {
  display: inline-block;
  font-family: var(--font-display);
  font-size: 13px;
  color: var(--accent);
  margin-bottom: 32px;
}

.detail-card h3 {
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 600;
  margin-bottom: 14px;
}

.detail-card p {
  color: var(--text-secondary);
  font-size: 15px;
}

.detail-cta-panel {
  display: flex;
  justify-content: space-between;
  gap: 40px;
  align-items: center;
  padding: 44px;
  border: 1px solid var(--accent-border);
  background: linear-gradient(135deg, rgba(16, 185, 129, 0.1), rgba(13, 26, 17, 0.92));
  border-radius: 8px;
}

.detail-cta-panel .section-title {
  margin-bottom: 12px;
}

.solution-list {
  display: grid;
  gap: 16px;
}

.solution-row {
  display: grid;
  grid-template-columns: 72px minmax(0, 1fr) auto;
  gap: 28px;
  align-items: center;
  padding: 28px;
  border: 1px solid var(--border-card);
  background: var(--bg-card);
  border-radius: 8px;
}

.solution-row > span {
  font-family: var(--font-display);
  color: var(--accent);
  font-size: 18px;
}

.solution-row h3 {
  font-family: var(--font-display);
  font-size: 24px;
  margin-bottom: 8px;
}

.solution-row p {
  color: var(--text-secondary);
  font-size: 15px;
}

.detail-process {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: 72px;
}

.process-steps {
  display: grid;
  gap: 18px;
  counter-reset: process;
}

.process-steps li {
  display: grid;
  grid-template-columns: 160px 1fr;
  gap: 20px;
  padding: 22px 0;
  border-bottom: 1px solid var(--border-subtle);
}

.process-steps strong {
  font-family: var(--font-display);
  color: var(--text-primary);
}

.process-steps span {
  color: var(--text-secondary);
}

.product-layout {
  display: grid;
  grid-template-columns: minmax(280px, 0.9fr) minmax(0, 1.1fr);
  gap: 72px;
  align-items: center;
}

.product-visual {
  min-height: 440px;
  display: grid;
  place-items: center;
  border: 1px solid var(--border-card);
  background:
    radial-gradient(circle at center, rgba(16, 185, 129, 0.18), transparent 54%),
    var(--bg-1);
  border-radius: 8px;
}

.product-unit {
  width: min(280px, 72%);
  aspect-ratio: 0.72;
  padding: 28px;
  border: 1px solid var(--accent-border-hover);
  background: linear-gradient(180deg, #101713, #07110D);
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.36);
}

.product-unit span {
  display: block;
  font-family: var(--font-display);
  font-size: 34px;
  color: var(--accent-bright);
  margin-bottom: 34px;
}

.product-unit div {
  height: 12px;
  margin-top: 18px;
  background: linear-gradient(90deg, var(--accent), transparent);
  opacity: 0.7;
}

.spec-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin-top: 32px;
}

.spec-grid div {
  padding: 18px;
  border: 1px solid var(--border-card);
  background: var(--bg-card);
  border-radius: 6px;
}

.spec-grid strong,
.spec-grid span {
  display: block;
}

.spec-grid strong {
  color: var(--accent);
  font-family: var(--font-display);
  font-size: 12px;
  text-transform: uppercase;
  margin-bottom: 8px;
}

.spec-grid span {
  color: var(--text-primary);
  font-size: 14px;
}

.architecture-map {
  display: grid;
  grid-template-columns: 1fr 90px 1fr 90px 1fr;
  align-items: center;
}

.arch-node {
  min-height: 220px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 34px;
  border: 1px solid var(--accent-border);
  background: var(--bg-card);
  border-radius: 8px;
}

.arch-node span {
  color: var(--accent);
  font-family: var(--font-display);
  font-size: 13px;
  margin-bottom: 12px;
}

.arch-node strong {
  font-family: var(--font-display);
  font-size: 28px;
  line-height: 1.2;
}

.arch-link {
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
}

.contact-layout {
  display: grid;
  grid-template-columns: minmax(280px, 0.8fr) minmax(0, 1.2fr);
  gap: 56px;
}

.contact-info-panel,
.contact-form {
  padding: 36px;
  border: 1px solid var(--border-card);
  background: var(--bg-card);
  border-radius: 8px;
}

.contact-info-panel p {
  display: grid;
  gap: 4px;
  margin-top: 18px;
  color: var(--text-secondary);
}

.contact-info-panel strong {
  color: var(--accent);
  font-family: var(--font-display);
  font-size: 12px;
  text-transform: uppercase;
}

.quick-links {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 34px;
}

.contact-form {
  display: grid;
  gap: 18px;
}

.contact-form label {
  display: grid;
  gap: 8px;
  color: var(--text-secondary);
  font-size: 14px;
}

.contact-form input,
.contact-form select,
.contact-form textarea {
  width: 100%;
  border: 1px solid var(--border-subtle);
  background: rgba(5, 8, 7, 0.7);
  color: var(--text-primary);
  border-radius: 4px;
  padding: 14px 16px;
  font: inherit;
}

.contact-form input:focus,
.contact-form select:focus,
.contact-form textarea:focus {
  outline: 2px solid var(--accent-border-hover);
  border-color: var(--accent);
}

.form-note {
  min-height: 24px;
  color: var(--accent-bright);
  font-size: 14px;
}

.evidence-strip {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1px;
  border: 1px solid var(--border-card);
  background: var(--border-card);
  border-radius: 8px;
  overflow: hidden;
}

.evidence-item {
  min-height: 160px;
  padding: 28px;
  background: var(--bg-card);
}

.evidence-item strong {
  display: block;
  font-family: var(--font-display);
  font-size: 30px;
  line-height: 1;
  color: var(--accent-bright);
  margin-bottom: 12px;
}

.evidence-item span {
  color: var(--text-secondary);
  font-size: 14px;
}

.case-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.case-card {
  padding: 28px;
  border: 1px solid var(--border-card);
  background: var(--bg-card);
  border-radius: 8px;
}

.case-card .case-kicker {
  display: block;
  color: var(--accent);
  font-family: var(--font-display);
  font-size: 12px;
  text-transform: uppercase;
  margin-bottom: 12px;
}

.case-card h3 {
  font-family: var(--font-display);
  font-size: 22px;
  margin-bottom: 12px;
}

.case-card p,
.case-card li {
  color: var(--text-secondary);
  font-size: 14px;
}

.case-card ul {
  display: grid;
  gap: 8px;
}

.model-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.model-card {
  padding: 30px;
  border: 1px solid var(--border-card);
  background: linear-gradient(180deg, rgba(13, 26, 17, 0.96), rgba(8, 16, 12, 0.96));
  border-radius: 8px;
}

.model-card h3 {
  font-family: var(--font-display);
  font-size: 26px;
  margin-bottom: 14px;
}

.model-card p,
.model-card li {
  color: var(--text-secondary);
  font-size: 14px;
}

.model-card ul {
  display: grid;
  gap: 9px;
  margin-top: 20px;
}

.sequence-list {
  display: grid;
  gap: 12px;
  counter-reset: sequence;
}

.sequence-list li {
  position: relative;
  padding: 22px 22px 22px 76px;
  border: 1px solid var(--border-card);
  background: var(--bg-card);
  border-radius: 8px;
}

.sequence-list li::before {
  counter-increment: sequence;
  content: counter(sequence, decimal-leading-zero);
  position: absolute;
  left: 22px;
  top: 22px;
  color: var(--accent);
  font-family: var(--font-display);
  font-size: 14px;
}

.sequence-list strong {
  display: block;
  font-family: var(--font-display);
  margin-bottom: 6px;
}

.sequence-list span {
  color: var(--text-secondary);
  font-size: 14px;
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  border: 1px solid var(--border-card);
  background: var(--bg-card);
  border-radius: 8px;
  overflow: hidden;
}

.data-table th,
.data-table td {
  padding: 18px 20px;
  border-bottom: 1px solid var(--border-card);
  text-align: left;
  vertical-align: top;
}

.data-table th {
  width: 28%;
  color: var(--accent);
  font-family: var(--font-display);
  font-weight: 600;
}

.data-table td {
  color: var(--text-secondary);
  font-size: 14px;
}

.data-table tr:last-child th,
.data-table tr:last-child td {
  border-bottom: none;
}

.tag-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.tag-cloud span {
  padding: 9px 12px;
  color: var(--text-accent);
  border: 1px solid var(--accent-border);
  background: var(--accent-faint);
  border-radius: 999px;
  font-size: 13px;
}

.simple-page {
  min-height: 100vh;
  background: var(--bg-0);
  padding: 80px 0;
}

.policy-page {
  max-width: 840px;
}

.policy-page h1 {
  margin: 64px 0 24px;
  font-family: var(--font-display);
  font-size: clamp(34px, 5vw, 56px);
}

.policy-page p {
  margin-bottom: 18px;
  color: var(--text-secondary);
}

.policy-page .btn-primary {
  margin-top: 24px;
}

.footer-contact {
  display: flex;
  flex-direction: column;
  gap: 10px;
  justify-self: end;
}

.footer-contact p {
  display: flex;
  gap: 12px;
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.5;
}

.contact-label {
  font-family: var(--font-display);
  font-size: 10.5px;
  font-weight: 600;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  text-transform: uppercase;
  flex-shrink: 0;
  padding-top: 1px;
  min-width: 56px;
}

.footer-contact a { color: var(--text-secondary); transition: color 0.2s; }
.footer-contact a:hover { color: var(--accent); }

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.footer-copy {
  font-family: var(--font-display);
  font-size: 12px;
  color: var(--text-muted);
  letter-spacing: 0.04em;
}

.footer-links {
  display: flex;
  gap: 24px;
}

.footer-links a {
  font-family: var(--font-display);
  font-size: 12px;
  color: var(--text-muted);
  transition: color 0.2s;
}

.footer-links a:hover { color: var(--text-secondary); }


/* ============================================================
   RESPONSIVE — Tablet (≤1024px)
   ============================================================ */
@media (max-width: 1024px) {
  .container { padding: 0 32px; }
  .section-padding { padding: 88px 0; }

  .nav-desktop { display: none; }
  .header-right .lang-switch,
  .btn-contact-us { display: none; }
  .hamburger { display: flex; }

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

  .pbic-panel { grid-template-columns: 1fr; }
  .pbic-panel-visual { border-right: none; border-bottom: 1px solid var(--border-card); }

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

  .lifecycle-layout { grid-template-columns: 220px 1fr; }

  .system-diagram { grid-template-columns: 1fr; }
  .sys-signal-col { border-left: none; border-right: none; border-top: 1px solid var(--border-card); border-bottom: 1px solid var(--border-card); }
  .sys-signal-col { flex-direction: row; flex-wrap: wrap; justify-content: flex-start; gap: 12px; }
  .sys-signals { flex-direction: row; flex-wrap: wrap; }

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

  .partners-grid { grid-template-columns: 1fr; }

  .quality-grid { grid-template-columns: 1fr; }

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

  .footer-top { grid-template-columns: 1fr; gap: 40px; }
  .footer-contact { justify-self: start; }

  .detail-hero { min-height: 560px; padding-top: calc(var(--header-h) + 88px); }
  .detail-two-col,
  .detail-process,
  .product-layout,
  .contact-layout {
    grid-template-columns: 1fr;
    gap: 44px;
  }
  .detail-grid-3 { grid-template-columns: 1fr; }
  .evidence-strip,
  .case-grid,
  .model-grid {
    grid-template-columns: 1fr;
  }
  .architecture-map {
    grid-template-columns: 1fr;
    gap: 18px;
  }
  .arch-link {
    width: 1px;
    height: 42px;
    justify-self: center;
    background: linear-gradient(180deg, transparent, var(--accent), transparent);
  }
}


/* ============================================================
   RESPONSIVE — Mobile (≤768px)
   ============================================================ */
@media (max-width: 768px) {
  .container { padding: 0 20px; }
  .section-padding { padding: 72px 0; }

  .hero-wafer { width: 300px; height: 300px; right: -20%; }
  .hero-content { padding-top: 48px; padding-bottom: 100px; }
  .hero-headline { font-size: clamp(28px, 8vw, 48px); }
  .hero-ctas { flex-direction: column; align-items: flex-start; }

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

  .business-grid { grid-template-columns: 1fr; }
  .biz-card-visual { height: 160px; }

  .pbic-tab { min-width: 140px; font-size: 12px; padding: 14px 16px; }
  .pbic-panel-visual { padding: 32px 24px; }
  .pbic-panel-text { padding: 32px 24px; }

  .glance-grid { grid-template-columns: repeat(2, 1fr); }
  .glance-stat { padding: 32px 24px; }

  .lifecycle-layout { grid-template-columns: 1fr; }
  .lifecycle-steps { flex-direction: row; overflow-x: auto; border-right: none; border-bottom: 1px solid var(--border-card); scrollbar-width: none; }
  .lifecycle-steps::-webkit-scrollbar { display: none; }
  .lc-step { border-bottom: none; border-right: 1px solid var(--border-card); flex-shrink: 0; padding: 16px 20px; }
  .lc-step:last-child { border-right: none; }
  .lc-step-bar { width: auto; height: 2px; bottom: 0; top: auto; left: 0; right: 0; transform: scaleX(0); transform-origin: left; }
  .lc-step.active .lc-step-bar { transform: scaleX(1); }
  .lc-panel { padding: 36px 28px; }
  .lc-panel-title { font-size: 24px; }

  .system-cards { grid-template-columns: 1fr; }

  .news-header { flex-direction: column; }
  .news-more-btn { align-self: flex-start; }
  .news-grid { grid-template-columns: 1fr; }

  .contact-ctas { flex-direction: column; align-items: center; }

  .footer-bottom { flex-direction: column; gap: 16px; text-align: center; }

  .detail-hero { min-height: 520px; padding-bottom: 72px; }
  .detail-hero::after { opacity: 0.28; right: -80px; }
  .detail-section { padding: 72px 0; }
  .detail-cta-panel,
  .solution-row {
    grid-template-columns: 1fr;
  }
  .detail-cta-panel {
    align-items: flex-start;
    padding: 28px;
  }
  .process-steps li {
    grid-template-columns: 1fr;
    gap: 6px;
  }
  .spec-grid { grid-template-columns: 1fr; }
  .product-visual { min-height: 320px; }
  .contact-info-panel,
  .contact-form {
    padding: 24px;
  }
  .data-table,
  .data-table tbody,
  .data-table tr,
  .data-table th,
  .data-table td {
    display: block;
    width: 100%;
  }
  .data-table th { padding-bottom: 6px; }
  .data-table td { padding-top: 6px; }
}

@media (max-width: 480px) {
  .glance-grid { grid-template-columns: 1fr; }
  .quality-grid { grid-template-columns: 1fr; }
}