/* ============================================================
   JX Future — NexOS
   Cyberpunk Industrial × Clean Enterprise
   ============================================================ */
:root {
  --bg:        #0A1628;   /* 科技深藍 */
  --bg-deep:   #050B14;   /* 墨黑 */
  --bg-card:   #0F1F35;
  --bg-card-2: #142A45;
  --line:      #1F324E;
  --line-2:    #2A4366;
  --cyan:      #00D4FF;   /* 電光藍 */
  --mint:      #14F1B2;   /* 智慧青 */
  --violet:    #7B61FF;
  --orange:    #FF6B35;
  --red:       #FF3860;
  --green:     #00CC88;
  --text:      #F7FAFC;
  --text-mut:  #A0AEC0;
  --text-dim:  #5A6B82;
  --grid-line: rgba(0, 212, 255, 0.06);

  --display:   "Space Grotesk", "Noto Sans TC", system-ui, sans-serif;
  --sans:      "Noto Sans TC", "Space Grotesk", system-ui, sans-serif;
  --mono:      "JetBrains Mono", ui-monospace, monospace;

  --maxw: 1320px;
  --pad-x: clamp(20px, 4vw, 56px);
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body.v2 {
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  font-size: 15px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; color: inherit; }

.container { max-width: var(--maxw); margin: 0 auto; padding: 0 var(--pad-x); }
.section-pad { padding: clamp(80px, 10vw, 140px) 0; }

/* ====== TYPE ====== */
.eyebrow {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--cyan);
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 6px 14px;
  border: 1px solid rgba(0, 212, 255, 0.3);
  border-radius: 999px;
  background: rgba(0, 212, 255, 0.05);
}
.eyebrow .blink {
  width: 6px; height: 6px; border-radius: 50%; background: var(--mint);
  box-shadow: 0 0 10px var(--mint);
  animation: blink 1.6s ease-in-out infinite;
}
@keyframes blink { 0%, 100% { opacity: 1 } 50% { opacity: 0.4 } }

.h-display {
  font-family: var(--display);
  font-weight: 700;
  font-size: clamp(40px, 6.4vw, 84px);
  line-height: 1.05;
  letter-spacing: -0.025em;
  margin: 0;
  text-wrap: balance;
}
.gradient-text {
  background: linear-gradient(135deg, var(--cyan) 0%, var(--mint) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.h-section {
  font-family: var(--display);
  font-weight: 700;
  font-size: clamp(32px, 3.6vw, 52px);
  line-height: 1.12;
  letter-spacing: -0.02em;
  margin: 0 0 12px;
}
.lead {
  font-size: 18px;
  line-height: 1.7;
  color: var(--text-mut);
  max-width: 64ch;
  margin: 0;
}
.body-mut { color: var(--text-mut); }

/* ====== BUTTONS ====== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 24px;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.02em;
  border-radius: 6px;
  transition: all .25s ease;
  border: 1px solid transparent;
  white-space: nowrap;
  font-family: var(--sans);
}
.btn-primary {
  background: var(--cyan);
  color: var(--bg-deep);
  box-shadow: 0 0 0 1px rgba(0, 212, 255, 0.4), 0 0 30px rgba(0, 212, 255, 0.3);
}
.btn-primary:hover {
  background: #4FE2FF;
  box-shadow: 0 0 0 1px rgba(0, 212, 255, 0.6), 0 0 40px rgba(0, 212, 255, 0.5);
  transform: translateY(-1px);
}
.btn-ghost {
  border-color: rgba(160, 174, 192, 0.2);
  color: var(--text);
  background: rgba(255,255,255,0.02);
}
.btn-ghost:hover { border-color: var(--cyan); color: var(--cyan); }
.btn .arrow { transition: transform .25s ease; }
.btn:hover .arrow { transform: translateX(4px); }

/* ====== TAGS ====== */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  border: 1px solid var(--line-2);
  border-radius: 4px;
  color: var(--text-mut);
  background: rgba(255,255,255,0.02);
}
.tag.cyan { color: var(--cyan); border-color: rgba(0,212,255,.4); }
.tag.mint { color: var(--mint); border-color: rgba(20,241,178,.4); }
.tag.violet { color: var(--violet); border-color: rgba(123,97,255,.4); }

/* ====== NAV ====== */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  padding: 18px var(--pad-x);
  display: flex; align-items: center; justify-content: space-between;
  background: rgba(10, 22, 40, 0);
  transition: all .3s ease;
  border-bottom: 1px solid transparent;
}
.nav.scrolled {
  background: rgba(10, 22, 40, 0.85);
  backdrop-filter: blur(14px);
  border-bottom-color: var(--line);
  padding: 14px var(--pad-x);
}
.logo {
  display: flex; align-items: center; gap: 14px;
  font-family: var(--display);
  font-weight: 700;
  font-size: 19px;
  letter-spacing: -0.005em;
}
.logo-tc { font-size: 19px; font-weight: 700; }
.logo .logo-en {
  font-size: 10px;
  color: var(--cyan);
  letter-spacing: 0.18em;
  margin-top: 2px;
}
.logo-mark {
  width: 56px; height: 56px;
  display: flex; align-items: center; justify-content: center;
  background: rgba(255,255,255,0.96);
  border-radius: 12px;
  padding: 0;
  overflow: hidden;
  box-shadow: 0 4px 18px rgba(0,212,255,0.25), 0 0 0 1px rgba(0,212,255,0.35);
}
.logo-mark > img { width: 100%; height: 100%; object-fit: contain; display: block; }
.logo-tc { display: flex; flex-direction: column; line-height: 1.1; }
.logo-en {
  font-family: var(--mono);
  font-weight: 500;
  color: var(--cyan);
  font-size: 10.5px;
  letter-spacing: 0.18em;
  display: block;
  line-height: 1;
  margin-top: 2px;
}
.nav-links { display: flex; gap: 32px; font-size: 13.5px; color: var(--text-mut); }
.nav-links a { transition: color .2s; padding: 4px 0; }
.nav-links a:hover { color: var(--cyan); }
.nav-cta { display: flex; gap: 10px; align-items: center; }
.lang-switch {
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.15em;
  color: var(--text-dim);
  display: flex; gap: 4px;
}
.lang-switch .active { color: var(--cyan); }

/* ====== HERO ====== */
.hero {
  position: relative;
  min-height: 100vh;
  padding: 130px var(--pad-x) 80px;
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  align-items: center;
  gap: 60px;
  overflow: hidden;
}
.hero::before {
  content: ""; position: absolute; inset: 0;
  background:
    radial-gradient(ellipse 700px 500px at 80% 60%, rgba(0, 212, 255, 0.10), transparent 65%),
    radial-gradient(ellipse 500px 700px at 0% 100%, rgba(20, 241, 178, 0.06), transparent 60%);
  pointer-events: none;
}
.hero-grid {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(var(--grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse 70% 70% at center, black 30%, transparent 100%);
  pointer-events: none;
}
.hero-text { position: relative; z-index: 2; max-width: 680px; }
.hero h1 { margin-top: 24px; }
.hero-sub {
  margin-top: 28px;
  font-size: 18px;
  line-height: 1.7;
  color: var(--text-mut);
  max-width: 540px;
}
.hero-cta { margin-top: 40px; display: flex; gap: 14px; flex-wrap: wrap; }

.hero-trust {
  margin-top: 56px;
  padding-top: 28px;
  border-top: 1px solid var(--line);
}
.hero-trust .ht-line {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--text-dim);
  text-transform: uppercase;
  margin-bottom: 18px;
}
.hero-trust .ht-strong { color: var(--cyan); }
.logo-marquee {
  display: flex;
  gap: 40px;
  align-items: center;
  flex-wrap: wrap;
  opacity: 0.7;
}
.logo-marquee .lm-item {
  font-family: var(--display);
  font-weight: 600;
  font-size: 15px;
  color: var(--text-mut);
  letter-spacing: 0.02em;
  white-space: nowrap;
}

/* === Hero 3D Building Wireframe === */
.hero-visual {
  position: relative;
  z-index: 2;
  height: 600px;
  display: grid;
  place-items: center;
}
.building-wrap {
  position: relative;
  width: 100%;
  height: 100%;
  display: grid;
  place-items: center;
}
.building-svg { width: 100%; height: 100%; }
.scan-line {
  position: absolute;
  left: 8%; right: 8%; height: 2px;
  background: linear-gradient(to right, transparent, var(--cyan), transparent);
  filter: blur(0.5px);
  box-shadow: 0 0 20px var(--cyan);
  animation: scan 4s ease-in-out infinite;
  pointer-events: none;
}
@keyframes scan {
  0% { top: 18%; opacity: 0; }
  10% { opacity: 1; }
  90% { opacity: 1; }
  100% { top: 82%; opacity: 0; }
}
.hud-callout {
  position: absolute;
  font-family: var(--mono);
  font-size: 10px;
  color: var(--cyan);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 4px 8px;
  border: 1px solid rgba(0, 212, 255, 0.4);
  background: rgba(10, 22, 40, 0.7);
  backdrop-filter: blur(4px);
  display: flex; gap: 6px; align-items: center;
}
.hud-callout .dot { width: 5px; height: 5px; border-radius: 50%; background: var(--mint); box-shadow: 0 0 6px var(--mint); }
.hud-callout.h1 { top: 22%; right: 0; }
.hud-callout.h2 { top: 48%; left: -10px; }
.hud-callout.h3 { bottom: 28%; right: 8%; }

/* ====== STATS ====== */
.stats-section {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: var(--bg-deep);
  padding: 56px 0;
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
}
.stats-item {
  padding: 0 32px;
  border-right: 1px solid var(--line);
  display: flex; flex-direction: column; gap: 8px;
}
.stats-item:last-child { border-right: 0; }
.stats-num {
  font-family: var(--display);
  font-size: clamp(40px, 5vw, 64px);
  font-weight: 700;
  color: var(--cyan);
  line-height: 1;
  letter-spacing: -0.03em;
  text-shadow: 0 0 30px rgba(0, 212, 255, 0.4);
}
.stats-num .small { font-size: 0.55em; color: var(--text-mut); margin-left: 2px; }
.stats-lbl { font-size: 13.5px; color: var(--text-mut); }
.stats-cap {
  font-family: var(--mono);
  font-size: 10.5px;
  color: var(--text-dim);
  letter-spacing: 0.15em;
  text-transform: uppercase;
}

/* ====== PROBLEM/SOLUTION ====== */
.problem .ps-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-top: 48px;
}
.ps-col-head {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.ps-col-head.bad { color: var(--red); }
.ps-col-head.good { color: var(--mint); }
.ps-col {
  display: grid;
  gap: 10px;
}
.ps-card {
  padding: 18px 22px;
  border-radius: 8px;
  border: 1px solid var(--line);
  background: var(--bg-card);
  display: flex;
  align-items: flex-start;
  gap: 14px;
  font-size: 14.5px;
  line-height: 1.55;
}
.ps-card.bad { border-left: 3px solid var(--red); color: var(--text-mut); }
.ps-card.good { border-left: 3px solid var(--mint); color: var(--text); }
.ps-card .ico {
  width: 22px; height: 22px;
  flex-shrink: 0;
  display: grid; place-items: center;
  border-radius: 50%;
  font-family: var(--mono);
  font-size: 13px;
  font-weight: 700;
}
.ps-card.bad .ico { background: rgba(255, 56, 96, 0.1); color: var(--red); }
.ps-card.good .ico { background: rgba(20, 241, 178, 0.1); color: var(--mint); }

/* ====== FEATURES (6 capabilities) ====== */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: 12px;
  overflow: hidden;
  margin-top: 56px;
}
.feature-card {
  background: var(--bg-card);
  padding: 36px 32px;
  display: flex;
  flex-direction: column;
  transition: background .3s ease;
  cursor: pointer;
  min-height: 280px;
}
.feature-card:hover { background: var(--bg-card-2); }
.feature-card .fc-icon {
  width: 48px; height: 48px;
  border-radius: 10px;
  background: linear-gradient(135deg, rgba(0, 212, 255, 0.12), rgba(0, 212, 255, 0.04));
  border: 1px solid rgba(0, 212, 255, 0.25);
  display: grid; place-items: center;
  color: var(--cyan);
  margin-bottom: 22px;
  transition: all .3s ease;
}
.feature-card:hover .fc-icon {
  box-shadow: 0 0 24px rgba(0, 212, 255, 0.3);
  border-color: rgba(0, 212, 255, 0.5);
}
.feature-card .fc-num {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--text-dim);
  letter-spacing: 0.18em;
  margin-bottom: 8px;
}
.feature-card .fc-title {
  font-family: var(--display);
  font-size: 22px;
  font-weight: 700;
  letter-spacing: -0.005em;
  margin: 0 0 10px;
}
.feature-card .fc-desc {
  font-size: 14px;
  color: var(--text-mut);
  line-height: 1.6;
  margin: 0 0 auto;
  padding-bottom: 16px;
}
.feature-card .fc-link {
  margin-top: 16px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--cyan);
  display: flex; align-items: center; gap: 8px;
  text-transform: uppercase;
}

/* ====== AI DISPATCH (deep dive) ====== */
.ai-dispatch { background: linear-gradient(180deg, var(--bg) 0%, var(--bg-deep) 100%); }
.ai-layout {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 80px;
  align-items: center;
}
.ai-pipeline {
  position: relative;
  padding: 32px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--bg-card);
}
.ai-step {
  display: grid;
  grid-template-columns: 32px 1fr auto;
  gap: 16px;
  align-items: center;
  padding: 16px 0;
  border-bottom: 1px dashed var(--line);
}
.ai-step:last-child { border-bottom: 0; }
.ai-step .as-num {
  width: 28px; height: 28px;
  border-radius: 50%;
  background: rgba(0, 212, 255, 0.1);
  border: 1px solid rgba(0, 212, 255, 0.4);
  color: var(--cyan);
  font-family: var(--mono);
  font-size: 12px;
  display: grid; place-items: center;
}
.ai-step.active .as-num {
  background: var(--cyan);
  color: var(--bg-deep);
  box-shadow: 0 0 16px rgba(0, 212, 255, 0.5);
}
.ai-step .as-name {
  font-family: var(--display);
  font-size: 15px;
  font-weight: 600;
}
.ai-step .as-meta {
  font-family: var(--mono);
  font-size: 10.5px;
  color: var(--text-dim);
  letter-spacing: 0.1em;
}
.ai-step.active .as-meta { color: var(--mint); }
.ai-factors {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  margin-top: 32px;
}
.ai-factor {
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--bg-card);
}
.ai-factor .af-label {
  font-family: var(--mono);
  font-size: 10px;
  color: var(--cyan);
  letter-spacing: 0.15em;
  text-transform: uppercase;
}
.ai-factor .af-val {
  font-family: var(--display);
  font-size: 16px;
  font-weight: 600;
  margin-top: 6px;
}
.ai-factor .af-bar {
  height: 4px;
  border-radius: 2px;
  background: var(--line);
  margin-top: 10px;
  overflow: hidden;
}
.ai-factor .af-bar > div {
  height: 100%;
  background: linear-gradient(90deg, var(--cyan), var(--mint));
  border-radius: 2px;
}

/* ====== BRAND TABS ====== */
.brand-tabs {
  display: flex;
  gap: 0;
  margin-top: 48px;
  border: 1px solid var(--line);
  border-radius: 8px;
  overflow: hidden;
  background: var(--bg-card);
  flex-wrap: wrap;
}
.brand-tab {
  padding: 16px 24px;
  font-family: var(--display);
  font-size: 14px;
  font-weight: 600;
  color: var(--text-mut);
  border-right: 1px solid var(--line);
  cursor: pointer;
  transition: all .25s;
  flex: 1;
  min-width: 120px;
  text-align: center;
}
.brand-tab:last-child { border-right: 0; }
.brand-tab:hover { color: var(--text); background: var(--bg-card-2); }
.brand-tab.act {
  color: var(--cyan);
  background: rgba(0, 212, 255, 0.08);
  box-shadow: inset 0 -2px 0 var(--cyan);
}
.brand-tab .bt-en { font-family: var(--mono); font-size: 10px; display: block; margin-top: 2px; letter-spacing: 0.1em; opacity: 0.7; }

.brand-panel {
  margin-top: 24px;
  padding: 48px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: linear-gradient(135deg, var(--bg-card) 0%, var(--bg-card-2) 100%);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}
.brand-mock {
  height: 280px;
  border-radius: 10px;
  border: 1px solid var(--line-2);
  background:
    radial-gradient(circle at center, rgba(0,212,255,0.08), transparent 70%),
    var(--bg-deep);
  display: grid;
  place-items: center;
  position: relative;
  overflow: hidden;
}
.brand-mock svg { width: 60%; height: 60%; }
.brand-info h3 {
  font-family: var(--display);
  font-size: 32px;
  font-weight: 700;
  margin: 0 0 4px;
  letter-spacing: -0.01em;
}
.brand-info .bi-en {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--cyan);
  letter-spacing: 0.15em;
}
.brand-info .bi-desc {
  margin-top: 18px;
  font-size: 15px;
  color: var(--text-mut);
  line-height: 1.7;
}
.brand-specs {
  margin-top: 24px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}
.brand-spec {
  padding: 12px 14px;
  border: 1px solid var(--line);
  border-radius: 6px;
}
.brand-spec .bs-lbl {
  font-family: var(--mono);
  font-size: 9.5px;
  color: var(--text-dim);
  letter-spacing: 0.15em;
  text-transform: uppercase;
}
.brand-spec .bs-val {
  font-size: 14px;
  font-weight: 600;
  color: var(--text);
  margin-top: 4px;
}

/* ====== IoT INTEGRATION (Building cross-section) ====== */
.iot-section { background: var(--bg-deep); }
.iot-layout {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 60px;
  align-items: center;
  margin-top: 56px;
}
.iot-building {
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 24px;
  background: var(--bg-card);
  position: relative;
}
.iot-systems { display: grid; gap: 12px; }
.iot-sys {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 14px;
  align-items: center;
  padding: 14px 18px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--bg-card);
  transition: all .25s;
}
.iot-sys:hover {
  border-color: var(--cyan);
  background: var(--bg-card-2);
}
.iot-sys .is-icon {
  width: 36px; height: 36px;
  border-radius: 6px;
  background: rgba(0, 212, 255, 0.08);
  display: grid; place-items: center;
  color: var(--cyan);
}
.iot-sys .is-name { font-family: var(--display); font-weight: 600; font-size: 15px; }
.iot-sys .is-event {
  font-family: var(--mono);
  font-size: 10.5px;
  color: var(--mint);
  letter-spacing: 0.05em;
}

/* ====== DIGITAL TWIN ====== */
.twin-section { background: var(--bg); }
.twin-vis {
  margin-top: 48px;
  padding: 40px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background:
    radial-gradient(ellipse at center, rgba(123, 97, 255, 0.08), transparent 70%),
    var(--bg-deep);
  position: relative;
  overflow: hidden;
  display: grid;
  grid-template-columns: 1fr 280px;
  gap: 40px;
  align-items: center;
}
.twin-3d {
  height: 320px;
  position: relative;
}
.twin-stats { display: grid; gap: 14px; }
.twin-stat {
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(10, 22, 40, 0.6);
  backdrop-filter: blur(6px);
}
.twin-stat .ts-lbl {
  font-family: var(--mono);
  font-size: 10.5px;
  color: var(--text-dim);
  letter-spacing: 0.15em;
  text-transform: uppercase;
}
.twin-stat .ts-val {
  font-family: var(--display);
  font-size: 32px;
  font-weight: 700;
  margin-top: 6px;
  color: var(--cyan);
}
.twin-stat.violet .ts-val { color: var(--violet); }
.twin-stat.mint .ts-val { color: var(--mint); }

/* ====== SCENARIOS ====== */
.scenes-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 48px;
}
.scene-card {
  padding: 32px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--bg-card);
  transition: all .3s;
  cursor: pointer;
  position: relative;
  overflow: hidden;
}
.scene-card::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(0, 212, 255, 0.06), transparent);
  opacity: 0;
  transition: opacity .3s;
}
.scene-card:hover { border-color: rgba(0, 212, 255, 0.4); transform: translateY(-3px); }
.scene-card:hover::before { opacity: 1; }
.scene-card .sce-num {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--cyan);
  letter-spacing: 0.18em;
}
.scene-card .sce-name {
  font-family: var(--display);
  font-size: 26px;
  font-weight: 700;
  margin: 8px 0 12px;
  letter-spacing: -0.01em;
}
.scene-card .sce-desc {
  font-size: 14px;
  color: var(--text-mut);
  line-height: 1.6;
  margin: 0 0 20px;
  position: relative;
}
.scene-card .sce-roi {
  padding-top: 18px;
  border-top: 1px solid var(--line);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--mono);
  font-size: 11px;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  position: relative;
}
.scene-card .sce-roi .val { color: var(--mint); font-weight: 600; }

/* ====== TESTIMONIAL ====== */
.testimonial-section { background: var(--bg-deep); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.testimonial-grid {
  display: grid;
  grid-template-columns: 6fr 4fr;
  gap: 40px;
  margin-top: 48px;
  align-items: stretch;
}
.client-wall {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: 8px;
  overflow: hidden;
}
.client-cell {
  background: var(--bg-card);
  aspect-ratio: 16 / 9;
  display: grid;
  place-items: center;
  font-family: var(--display);
  font-weight: 600;
  font-size: 14px;
  color: var(--text-mut);
  text-align: center;
  letter-spacing: 0.02em;
  padding: 12px;
  transition: all .25s;
}
.client-cell:hover { color: var(--cyan); background: var(--bg-card-2); }
.client-cell .cc-en {
  display: block;
  font-family: var(--mono);
  font-size: 10px;
  color: var(--text-dim);
  margin-top: 4px;
  letter-spacing: 0.1em;
}
.testimonial-card {
  padding: 36px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: linear-gradient(135deg, var(--bg-card), var(--bg-card-2));
  display: flex;
  flex-direction: column;
}
.testimonial-card .tc-quote {
  font-family: var(--display);
  font-size: 60px;
  color: var(--cyan);
  line-height: 1;
  font-weight: 700;
  margin-bottom: 16px;
  text-shadow: 0 0 30px rgba(0, 212, 255, 0.4);
}
.testimonial-card .tc-text {
  font-size: 17px;
  line-height: 1.65;
  color: var(--text);
  flex: 1;
}
.testimonial-card .tc-author {
  margin-top: 24px;
  padding-top: 20px;
  border-top: 1px solid var(--line);
  font-family: var(--mono);
  font-size: 12px;
  color: var(--text-mut);
  letter-spacing: 0.06em;
}
.testimonial-card .tc-author strong {
  display: block;
  font-family: var(--sans);
  font-size: 14px;
  color: var(--text);
  font-weight: 600;
  margin-bottom: 2px;
  letter-spacing: 0;
}

/* ====== DEVELOPER ====== */
.developer-section { background: var(--bg); }
.dev-layout {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 60px;
  align-items: center;
}
.code-block {
  background: var(--bg-deep);
  border: 1px solid var(--line);
  border-radius: 10px;
  overflow: hidden;
  font-family: var(--mono);
  font-size: 13px;
  line-height: 1.7;
}
.code-block .cb-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 14px;
  background: var(--bg-card);
  border-bottom: 1px solid var(--line);
}
.code-block .cb-tabs { display: flex; gap: 14px; }
.code-block .cb-tab {
  font-size: 11px;
  color: var(--text-dim);
  letter-spacing: 0.08em;
  cursor: pointer;
  padding: 4px 10px;
  border-radius: 4px;
}
.code-block .cb-tab.act { color: var(--cyan); background: rgba(0,212,255,0.1); }
.code-block .cb-copy {
  font-size: 10.5px;
  color: var(--text-dim);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}
.code-block pre {
  margin: 0;
  padding: 22px;
  overflow-x: auto;
  color: #c5d4ec;
}
.code-block .kw { color: var(--violet); }
.code-block .str { color: var(--mint); }
.code-block .com { color: var(--text-dim); font-style: italic; }
.code-block .fn { color: var(--cyan); }
.code-block .num { color: #FFB86C; }

.dev-points {
  display: grid;
  gap: 16px;
  margin-top: 32px;
}
.dev-point {
  padding: 18px 22px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--bg-card);
  display: grid;
  grid-template-columns: 32px 1fr;
  gap: 16px;
  align-items: center;
}
.dev-point .dp-icon {
  width: 32px; height: 32px;
  border-radius: 6px;
  background: rgba(0, 212, 255, 0.1);
  color: var(--cyan);
  display: grid; place-items: center;
}
.dev-point .dp-name {
  font-family: var(--display);
  font-weight: 600;
  font-size: 14px;
}
.dev-point .dp-meta {
  font-family: var(--mono);
  font-size: 10.5px;
  color: var(--text-dim);
  letter-spacing: 0.1em;
  margin-top: 2px;
}

/* ====== STANDARD VDA5050 ====== */
.standard-section {
  background: linear-gradient(135deg, rgba(123, 97, 255, 0.06) 0%, rgba(0, 212, 255, 0.06) 100%), var(--bg-deep);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.standard-card {
  padding: 56px;
  border-radius: 14px;
  border: 1px solid rgba(0, 212, 255, 0.2);
  background:
    radial-gradient(circle at 80% 20%, rgba(0, 212, 255, 0.12), transparent 50%),
    radial-gradient(circle at 20% 80%, rgba(123, 97, 255, 0.1), transparent 50%),
    var(--bg-card);
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 60px;
  align-items: center;
}
.standard-card .sc-eyebrow {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--violet);
  text-transform: uppercase;
  margin-bottom: 16px;
}
.standard-card h3 {
  font-family: var(--display);
  font-size: 36px;
  font-weight: 700;
  letter-spacing: -0.015em;
  margin: 0 0 16px;
  line-height: 1.15;
}
.standard-card p {
  font-size: 16px;
  color: var(--text-mut);
  line-height: 1.7;
  margin: 0;
}
.standard-vis {
  position: relative;
  height: 280px;
}
.std-orbit {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
}
.std-core {
  width: 120px; height: 120px;
  border-radius: 50%;
  background: radial-gradient(circle, var(--cyan) 0%, rgba(0,212,255,0.15) 60%, transparent 80%);
  display: grid; place-items: center;
  font-family: var(--mono);
  font-size: 13px;
  font-weight: 600;
  color: var(--bg-deep);
  letter-spacing: 0.1em;
  box-shadow: 0 0 60px rgba(0, 212, 255, 0.5);
  position: relative;
  z-index: 2;
}
.std-orbit-ring {
  position: absolute;
  border: 1px dashed rgba(0, 212, 255, 0.3);
  border-radius: 50%;
}
.std-orbit-ring.r1 { width: 200px; height: 200px; }
.std-orbit-ring.r2 { width: 280px; height: 280px; animation: spin 30s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }
.std-node {
  position: absolute;
  padding: 6px 12px;
  font-family: var(--mono);
  font-size: 10.5px;
  color: var(--text);
  border: 1px solid var(--line-2);
  background: var(--bg-deep);
  border-radius: 4px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  white-space: nowrap;
  z-index: 3;
}
.std-node.n1 { top: 10%; left: 20%; color: var(--mint); border-color: rgba(20,241,178,.4); }
.std-node.n2 { top: 8%; right: 12%; color: var(--cyan); border-color: rgba(0,212,255,.4); }
.std-node.n3 { bottom: 12%; left: 8%; color: var(--violet); border-color: rgba(123,97,255,.4); }
.std-node.n4 { bottom: 8%; right: 20%; color: var(--orange); border-color: rgba(255,107,53,.4); }

/* ====== FINAL CTA ====== */
.final-cta {
  padding: 120px var(--pad-x);
  background:
    radial-gradient(ellipse at center, rgba(0, 212, 255, 0.1) 0%, transparent 60%),
    var(--bg-deep);
  position: relative;
  text-align: center;
  border-top: 1px solid var(--line);
  overflow: hidden;
}
.final-cta::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse 60% 60% at center, black 0%, transparent 80%);
  pointer-events: none;
}
.final-cta-inner { position: relative; z-index: 1; max-width: 760px; margin: 0 auto; }
.final-cta h2 {
  font-family: var(--display);
  font-size: clamp(36px, 5vw, 60px);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin: 18px 0;
}
.final-cta .btns { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; margin-top: 32px; }

/* ====== FOOTER ====== */
.footer {
  background: var(--bg-deep);
  border-top: 1px solid var(--line);
  padding: 80px var(--pad-x) 32px;
}
.footer-top {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1fr 1.2fr;
  gap: 40px;
  padding-bottom: 60px;
  border-bottom: 1px solid var(--line);
}
.footer-brand .fb-tag {
  margin-top: 18px;
  font-family: var(--mono);
  font-size: 12px;
  color: var(--cyan);
  letter-spacing: 0.1em;
}
.footer-brand p {
  margin-top: 14px;
  font-size: 13px;
  color: var(--text-mut);
  max-width: 320px;
  line-height: 1.7;
}
.footer-col h4 {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--cyan);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  margin: 0 0 18px;
  font-weight: 600;
}
.footer-col ul { list-style: none; padding: 0; margin: 0; display: grid; gap: 10px; }
.footer-col a {
  font-size: 13.5px;
  color: var(--text-mut);
  transition: color .2s;
}
.footer-col a:hover { color: var(--cyan); }
.footer-newsletter input {
  width: 100%;
  background: var(--bg-card);
  border: 1px solid var(--line);
  padding: 11px 14px;
  border-radius: 6px;
  color: var(--text);
  font-family: var(--sans);
  font-size: 13px;
  outline: none;
}
.footer-newsletter input:focus { border-color: var(--cyan); }
.footer-newsletter button {
  margin-top: 10px;
  width: 100%;
}

.footer-bot {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 28px;
  font-family: var(--mono);
  font-size: 11px;
  color: var(--text-dim);
  letter-spacing: 0.06em;
  flex-wrap: wrap;
  gap: 12px;
}
.footer-bot .fb-cert { display: flex; gap: 14px; flex-wrap: wrap; }

/* ====== SECTION HEAD common ====== */
.section-head {
  display: grid;
  gap: 14px;
  max-width: 720px;
  margin-bottom: 32px;
}
.section-head.center {
  margin: 0 auto 32px;
  text-align: center;
}
.section-head.center .eyebrow { justify-self: center; }

/* ===== Responsive ===== */
@media (max-width: 1100px) {
  .hero { grid-template-columns: 1fr; padding-top: 110px; }
  .hero-visual { height: 480px; }
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .ai-layout, .iot-layout, .twin-vis, .standard-card, .dev-layout, .testimonial-grid { grid-template-columns: 1fr; gap: 40px; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .stats-item:nth-child(2) { border-right: 0; }
  .scenes-grid { grid-template-columns: 1fr; }
  .footer-top { grid-template-columns: 1fr 1fr; }
  .nav-links { display: none; }
  .brand-panel { grid-template-columns: 1fr; }
  .ps-grid { grid-template-columns: 1fr; }
  .client-wall { grid-template-columns: repeat(2, 1fr); }
}


/* ============================================================
   NAMING STORY · Apple-minimal
   ============================================================ */
.naming {
  position: relative;
  background:
    radial-gradient(ellipse 80% 60% at 50% 30%, rgba(0,212,255,0.06), transparent 60%),
    linear-gradient(180deg, var(--bg) 0%, var(--bg-deep) 100%);
  padding-top: clamp(80px, 12vw, 160px);
  padding-bottom: clamp(80px, 12vw, 160px);
  overflow: hidden;
}
.naming::before {
  content: '';
  position: absolute; inset: 0;
  background-image:
    linear-gradient(var(--grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
  background-size: 80px 80px;
  mask-image: radial-gradient(ellipse 60% 70% at 50% 50%, black 30%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse 60% 70% at 50% 50%, black 30%, transparent 75%);
  pointer-events: none;
  opacity: 0.4;
}
.naming-wrap {
  position: relative;
  text-align: center;
  max-width: 1100px;
}
.naming-eyebrow {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.3em;
  color: var(--cyan);
  opacity: 0.7;
  margin-bottom: clamp(40px, 6vw, 72px);
}
.naming-kicker {
  font-family: var(--display);
  font-weight: 300;
  font-size: clamp(28px, 4.2vw, 56px);
  line-height: 1.15;
  color: var(--text-mut);
  letter-spacing: -0.02em;
  margin: 0 0 clamp(24px, 3vw, 40px);
}
.naming-lead-wrap {
  margin-bottom: clamp(80px, 10vw, 140px);
}
.naming-lead {
  font-family: var(--display);
  font-weight: 700;
  font-size: clamp(40px, 7vw, 96px);
  line-height: 1.05;
  letter-spacing: -0.035em;
  color: var(--text);
  background: linear-gradient(135deg, #fff 0%, var(--cyan) 50%, var(--mint) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  text-wrap: balance;
}

/* Decompose: Nex + OS = NexOS */
.naming-decompose {
  display: grid;
  grid-template-columns: minmax(0,1fr) auto minmax(0,1fr) auto minmax(0,1fr);
  gap: clamp(20px, 3vw, 40px);
  align-items: stretch;
  margin-bottom: clamp(80px, 10vw, 120px);
}
.naming-part {
  text-align: center;
  padding: clamp(24px, 3vw, 40px) clamp(16px, 2vw, 28px);
  border: 1px solid var(--line);
  border-radius: 4px;
  background: linear-gradient(180deg, rgba(15,31,53,0.6), rgba(10,22,40,0.3));
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  position: relative;
  overflow: hidden;
}
.naming-part::after {
  content: '';
  position: absolute; left: 0; right: 0; top: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--cyan), transparent);
  opacity: 0.4;
}
.naming-part:nth-child(3)::after {
  background: linear-gradient(90deg, transparent, var(--mint), transparent);
}
.naming-mark {
  font-family: var(--display);
  font-weight: 700;
  font-size: clamp(48px, 7vw, 88px);
  line-height: 1;
  color: var(--text);
  letter-spacing: -0.03em;
  margin-bottom: 16px;
}
.naming-part:nth-child(1) .naming-mark { color: var(--cyan); }
.naming-part:nth-child(3) .naming-mark { color: var(--mint); }
.naming-label {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.25em;
  color: var(--text-mut);
  text-transform: uppercase;
  margin-bottom: 16px;
}
.naming-desc {
  font-family: var(--sans);
  font-size: clamp(13px, 1.1vw, 15px);
  line-height: 1.7;
  color: var(--text-mut);
  text-wrap: pretty;
}
.naming-op {
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--display);
  font-weight: 300;
  font-size: clamp(32px, 4vw, 56px);
  color: var(--cyan);
  opacity: 0.5;
}
.naming-result {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: clamp(24px, 3vw, 40px) clamp(20px, 2.5vw, 32px);
  border: 1px solid rgba(0, 212, 255, 0.4);
  border-radius: 4px;
  background:
    radial-gradient(ellipse at center, rgba(0, 212, 255, 0.12), transparent 70%),
    linear-gradient(180deg, rgba(15,31,53,0.8), rgba(10,22,40,0.5));
  box-shadow:
    0 0 40px rgba(0, 212, 255, 0.15),
    inset 0 0 60px rgba(20, 241, 178, 0.05);
  position: relative;
}
.naming-result::before {
  content: '';
  position: absolute; inset: -1px;
  border-radius: 4px;
  background: linear-gradient(135deg, var(--cyan), var(--mint));
  opacity: 0.3;
  z-index: -1;
}
.naming-result-mark {
  font-family: var(--display);
  font-weight: 700;
  font-size: clamp(40px, 6vw, 80px);
  line-height: 1;
  letter-spacing: -0.03em;
  background: linear-gradient(135deg, #fff, var(--cyan) 60%, var(--mint));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: 12px;
}
.naming-result-label {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.15em;
  color: var(--cyan);
  text-align: center;
  text-wrap: balance;
  max-width: 200px;
}

/* Closing tag */
.naming-tag {
  font-family: var(--display);
  font-weight: 300;
  font-size: clamp(20px, 2.6vw, 32px);
  line-height: 1.4;
  color: var(--text);
  max-width: 800px;
  margin: 0 auto clamp(40px, 5vw, 64px);
  letter-spacing: -0.01em;
  text-wrap: balance;
  font-style: italic;
  opacity: 0.85;
}
.naming-foot {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.3em;
  color: var(--text-dim);
  opacity: 0.6;
}

@media (max-width: 900px) {
  .naming-decompose {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  .naming-op {
    transform: rotate(90deg);
    padding: 8px 0;
  }
}

/* RTL support */
[dir="rtl"] .naming-eyebrow,
[dir="rtl"] .naming-foot,
[dir="rtl"] .naming-label,
[dir="rtl"] .naming-result-label {
  letter-spacing: 0;
}
[dir="rtl"] .naming-decompose {
  direction: rtl;
}

/* ---- Global RTL: arabic typography & flipped layouts ---- */
[dir="rtl"] body,
[dir="rtl"] .site {
  font-family: 'Noto Sans Arabic', 'Noto Sans TC', system-ui, sans-serif;
}
[dir="rtl"] .eyebrow,
[dir="rtl"] .stat-label,
[dir="rtl"] .pipeline-head,
[dir="rtl"] .factor-label,
[dir="rtl"] .twin-meta-label,
[dir="rtl"] .iot-cross-head,
[dir="rtl"] .footer-col h4,
[dir="rtl"] .scenarios-grid .scene-meta,
[dir="rtl"] .testimonial-eyebrow,
[dir="rtl"] .ps-head {
  letter-spacing: 0;
}
/* Arrow direction flips */
[dir="rtl"] .nav-cta::after,
[dir="rtl"] .btn-arrow::after,
[dir="rtl"] .learn-more::after {
  transform: scaleX(-1);
}
/* Pipeline & flow visuals stay LTR (technical diagrams) */
[dir="rtl"] .dispatch-pipeline,
[dir="rtl"] .iot-cross,
[dir="rtl"] .twin-vis,
[dir="rtl"] .standard-card,
[dir="rtl"] .dev-points,
[dir="rtl"] .brand-panel,
[dir="rtl"] .stats-grid,
[dir="rtl"] .ps-grid {
  direction: ltr;
}
[dir="rtl"] .dispatch-pipeline > *,
[dir="rtl"] .iot-cross > *,
[dir="rtl"] .twin-vis > *,
[dir="rtl"] .dev-points > *,
[dir="rtl"] .stats-grid > * {
  direction: rtl;
}
/* Stats grid borders flip */
[dir="rtl"] .stats-item {
  border-right: 0;
  border-left: 1px solid rgba(0, 212, 255, 0.15);
}
[dir="rtl"] .stats-item:last-child {
  border-left: 0;
}
/* Lang dropdown stays LTR for codes */
[dir="rtl"] .lang-dropdown,
[dir="rtl"] .nav-bar,
[dir="rtl"] .site-nav {
  direction: rtl;
}
/* Numbers, codes and brand names stay LTR */
[dir="rtl"] .stat-num,
[dir="rtl"] .hero-trust-num,
[dir="rtl"] code,
[dir="rtl"] .mono,
[dir="rtl"] .pipeline-step-time,
[dir="rtl"] .factor-value {
  direction: ltr;
  unicode-bidi: embed;
  display: inline-block;
}